Electric connector
By adjusting the distance between the grounding terminal and the signal terminal in the electrical connector, the impedance mismatch problem was solved, resulting in improved high-frequency performance and reduced insertion loss.
Patent Information
- Application Number
- CN202520090153.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Existing electrical connectors suffer from impedance mismatch in high-frequency applications, failing to meet the increasingly stringent high-frequency requirements.
Impedance matching is achieved by reducing the distance between the grounding terminal fixing parts and increasing the distance between the grounding terminal and the signal terminal fixing parts, thereby increasing the impedance of the signal terminal.
It improves the overall impedance of the signal terminals, optimizes high-frequency performance, reduces insertion loss, and enhances high-frequency characteristics.
Smart Images
Figure CN223927696U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an electric connector, especially to an electric connector for improving high frequency.
BACKGROUND
[0002] The existing electric connector comprises an insulating body and a plurality of conductive terminals arranged on the insulating body, the insulating body has a plurality of terminal grooves penetrating from top to bottom; the plurality of conductive terminals comprises a plurality of ground terminals and a plurality of signal terminals, the plurality of conductive terminals are correspondingly accommodated in the plurality of terminal grooves and arranged in multiple rows along the front-rear direction, the conductive terminals in each row are aligned along the left-right direction, the conductive terminals in every two adjacent rows are staggered in the front-rear direction, each conductive terminal has two fixing parts arranged oppositely in front of and behind a contact part, the contact part is located above the fixing parts, the contact part protrudes out of the terminal groove for elastically abutting against a mating element upward, the fixing parts are fixed and accommodated in the terminal groove, the distance between the two fixing parts of the ground terminal along the front-rear direction is equal to the distance between the two fixing parts of the signal terminal, which is beneficial to simplify the manufacturing process of the electric connector and reduce the manufacturing cost of the electric connector.
[0003] However, the above-mentioned electric connector has certain limitations in improving high frequency (because the position of the signal terminal at the fixing part is at an impedance low point which has exceeded the specification line, the impedance is not matched), and cannot meet the increasingly high high frequency requirements.
[0004] Therefore, it is necessary to design a new electric connector to overcome the above problems.
UTILITY MODEL CONTENTS
[0005] To solve the above problems of the prior art, the utility model aims at providing a new electric connector, by reducing the front-rear distance between the two fixing parts of the ground terminal, and then increasing the front-rear distance between the two fixing parts of the ground terminal and the signal terminal, the impedance of the fixing part of the signal terminal is improved, so that the impedance is matched and the high frequency is improved.
[0006] To achieve the above objectives, this utility model provides an electrical connector, comprising: an insulating body having a plurality of terminal slots extending vertically through it; a plurality of terminals correspondingly housed in the plurality of terminal slots, including differential signal pairs and ground terminals, each differential signal pair consisting of two differential signal terminals arranged side by side, each terminal including two terminal branches arranged front to back and independent of each other; each terminal branch having a contact portion and a fixing portion, the contact portion being located above the fixing portion, the fixing portion being fixed and housed in the terminal slot, the two contact portions of the two terminal branches of each terminal abutting upwards against the same conductive pad of an upper mating element, wherein, for a ground terminal and a differential signal terminal arranged adjacent to each other in the front-back direction, the distance between the two fixing portions of the ground terminal in the front-back direction is less than the distance between the two fixing portions of the differential signal terminal.
[0007] Furthermore, the multiple terminals are arranged in multiple rows along the front-back direction, with adjacent rows of terminals staggered along the front-back direction, and each row of terminals is aligned along the left-right direction. For a ground terminal and a differential signal terminal arranged adjacent to each other along the front-back direction, the shortest distance between the fixing part of the ground terminal and the fixing part of the differential signal terminal adjacent to it along the front-back direction is greater than the distance between the two fixing parts of the ground terminal.
[0008] Furthermore, each of the terminal branches also includes a spring arm and a connecting section connecting the spring arm and the contact portion. The spring arm extends upward from the fixing portion. The width of the contact portion in the left-right direction is smaller than the width of the spring arm. The two fixing portions and the two spring arms of each terminal are arranged facing each other in the front-back direction. The two contact portions in the terminal slot are staggered in the front-back direction.
[0009] Furthermore, the two connecting segments of the grounding terminal extend obliquely to the side opposite to each other in the left-right direction, the two connecting segments of the grounding terminal are at least partially offset in the front-back direction, and the two connecting segments of the differential signal terminal are completely aligned in the front-back direction.
[0010] Furthermore, each of the terminal branches also includes a spring arm extending upward from the fixing part. The spring arm is located between the fixing part and the contact part and can be elastically deformed under force. The terminal branch of the grounding terminal is defined as a grounding terminal branch and the terminal branch of the differential signal terminal is defined as a signal terminal branch. In the left-right direction, the width of the spring arm of the grounding terminal branch is smaller than the width of the spring arm of the signal terminal branch. For a signal terminal branch and a grounding terminal branch located in two adjacent rows, when viewed downwards, the spring arm of the signal terminal branch and the spring arm of the grounding terminal branch are side by side.
[0011] Furthermore, there are multiple grounding terminals, and the insulating body has at least one upper protrusion. The upper protrusion is used to support the docking element upward. Looking downward, the upper protrusion is located between two grounding terminals that are side by side, but not between the side by side grounding terminals and adjacent differential signal terminals or between the two differential signal terminals of a differential pair.
[0012] Furthermore, the two fixing parts of the two grounding terminals arranged side by side are integrally connected by a bridging part. Looking downwards, the upper protrusion is located between the two bridging parts, and one of the two fixing parts of the same grounding terminal is located in front of the upper protrusion and the other is located behind the upper protrusion.
[0013] Furthermore, the two grounding terminals are arranged side by side and adjacent to each other, and the differential signal terminal and the two grounding terminals are arranged in two adjacent rows. The differential signal terminal is located between the two grounding terminals in the left-right direction. The terminal branch of the grounding terminal is defined as a grounding terminal branch and the terminal branch of the differential signal terminal is defined as a signal terminal branch. The two adjacent grounding terminal branches are integrally connected by a bridging part. The terminal slot that accommodates the grounding terminal is defined as a grounding terminal slot and the terminal slot that accommodates the differential signal terminal is defined as a signal terminal slot. A trench connects the two adjacent grounding terminal slots in the left-right direction, and the signal terminal slot is connected to the adjacent trench in the front-back direction. The bridging part is located in the trench and shields the differential signal terminal in the front-back direction.
[0014] This utility model also provides an electrical connector, comprising: an insulating body having a plurality of terminal slots extending vertically through it; a plurality of terminals correspondingly housed in the plurality of terminal slots, including signal terminals and ground terminals, each terminal having a contact portion and two fixing portions disposed opposite to each other on the front of the plate, the contact portion being located above the fixing portions, the contact portion being used to elastically abut against an upper mating element, the fixing portions being fixed and housed in the terminal slots, wherein, for a ground terminal and a signal terminal disposed adjacent to each other in the front-to-back direction, the distance between the two fixing portions of the ground terminal in the front-to-back direction is less than the distance between the two fixing portions of the signal terminal.
[0015] Furthermore, the multiple terminals are arranged in multiple rows along the front-back direction, with adjacent rows of terminals staggered along the front-back direction, and each row of terminals is aligned along the left-right direction. For a ground terminal and a differential signal terminal arranged adjacent to each other along the front-back direction, the shortest distance between the fixing part of the ground terminal and the fixing part of the signal terminal adjacent to it along the front-back direction is greater than the distance between the two fixing parts of the ground terminal.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] By setting the distance between the two fixing parts of the grounding terminal to be smaller than the distance between the two fixing parts of the signal terminal, the front-to-back distance between the grounding terminal and the signal terminal is increased, reducing the capacitance at the location of the fixing part of the signal terminal (according to the characteristic impedance formula, capacitance is inversely proportional to characteristic impedance), thereby increasing the characteristic impedance value, so that the overall impedance of the signal terminal is within the specification line, that is, impedance matching, optimizing insertion and return loss, and improving high frequency. [Attached Image Description]
[0018] Figure 1 This is a perspective view of the electrical connector of this utility model;
[0019] Figure 2 for Figure 1 Top view;
[0020] Figure 3 for Figure 2 A sectional view cut along the AA direction;
[0021] Figure 4 for Figure 3 A schematic diagram showing the electrical connector after it has come into contact with an upper mating element and a lower mating element;
[0022] Figure 5 for Figure 2 A magnified view of part B;
[0023] Figure 6 for Figure 1 A three-dimensional view cut along the front-back direction;
[0024] Figure 7 for Figure 1 A top view showing only the three ground terminals and one differential signal pair;
[0025] Figure 8 for Figure 1 Only a front view of the three ground terminals and one differential signal pair is shown.
[0026]
[0027]
Detailed Implementation Methods
[0028] To facilitate a better understanding of the purpose, structure, and features of this utility model, it is defined that there are three directions: vertical (Z-axis), horizontal (X-axis), and front-back (Y-axis). These three directions are perpendicular to each other. The utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.
[0029] like Figures 1 to 8 The diagram illustrates a specific embodiment of the electrical connector 100 of this utility model. The electrical connector 100 has a double-sided crimp structure and is elastically connected to an upper mating element 200 and a lower mating element 300, respectively. The electrical connector 100 includes an insulating body 1 and a plurality of terminals 2 disposed on the insulating body 1. The plurality of terminals 2 include a plurality of grounding terminals 2G and a plurality of signal terminals 2S. The plurality of terminals 2 abut upward against the upper mating element 200 and downward against the lower mating element 300.
[0030] like Figures 1 to 3 As shown, the insulating body 1 is integrally molded from plastic material. Figures 1-6 (Only a portion of the structure of the insulating body 1 is shown). The insulating body 1 has an upper surface 11 and a lower surface 12 arranged opposite each other, a plurality of terminal slots 13, a plurality of upper protrusions 14 and a plurality of lower protrusions 15. Each terminal slot 13 penetrates the upper surface 11 and the lower surface 12 in the vertical direction Z. The plurality of terminal slots 13 are arranged in multiple rows in the front-back direction Y. The plurality of terminal slots 13 in each row are aligned and spaced apart in the left-right direction X. The plurality of terminal slots 13 in each adjacent row are staggered. The plurality of terminal slots 13 are used to accommodate a plurality of terminals 2. The terminal slot 13 accommodating the signal terminal 2S is defined as signal terminal slot 13a, and the terminal slot 13 accommodating the ground terminal 2G is defined as ground terminal slot 13b.
[0031] like Figure 1 and Figure 2 As shown, multiple upper protrusions 14 are arranged in multiple rows in the front-rear direction Y. Each row of upper protrusions 14 is aligned and spaced apart in the left-right direction X. Each upper protrusion 14 is located between two adjacent grounding terminal slots 13b in the left-right direction X. There are no upper protrusions 14 between the adjacent grounding terminals 2G and the adjacent signal terminals 2S, or between the two signal terminals 2S of a differential pair. In this embodiment, the signal terminals 2S are differential signal terminals 2S used to transmit differential signals. Two adjacent signal terminals 2S arranged side-by-side form a differential signal pair. Each differential signal pair is surrounded by eight adjacent grounding terminals 2G. Each upper protrusion 14 extends upward from the upper surface 11 to support the upper docking element 200 (see reference). Figure 4 ).
[0032] like Figure 2 , Figure 3 and Figure 6As shown, a plurality of upper protrusions 14 are arranged one-to-one with a plurality of lower protrusions 15 in the vertical direction Z. The lower protrusions 15 extend downward from the lower surface 12 to support the lower mating element 300 (see reference). Figure 4 ).
[0033] like Figure 2 , Figure 5 and Figure 6 As shown, the insulating body 1 also includes a plurality of grooves 16, which extend upward through the upper surface 11. Three adjacent grounding terminal slots 13b in the same row form a unit. For the same unit, each groove 16 is located between two adjacent grounding terminal slots 13b, thus connecting the two adjacent grounding terminal slots 13b left and right. There are two grooves 16 arranged in a front-to-back manner between two adjacent grounding terminal slots 13b. The signal terminal slot 13a is connected to the adjacent grooves 16 along the front-to-back direction Y. Each upper protrusion 14 is located between two grooves 16 arranged in a front-to-back manner, that is, each upper protrusion 14 has a groove 16 arranged on each of its front and back sides.
[0034] like Figure 1 and Figure 2 As shown, multiple terminals 2 are arranged in multiple rows in the front-to-back direction Y. Each row of terminals 2 is aligned in the left-to-right direction X. Each terminal 2 includes two terminal branches that are arranged facing each other and are independent of each other (in other embodiments, the two terminal branches can be connected to form one terminal 2, that is, the terminal 2 is a one-piece structure instead of a two-piece structure). Multiple terminals 2 are received one-to-one in multiple terminal slots 13, that is, each terminal slot 13 has two terminal branches. In other embodiments, each terminal slot 13 can only receive one one-piece terminal 2. Multiple terminals 2 in each adjacent row are staggered front to back. Each signal terminal 2S is located between two adjacent ground terminals 2G in the left-to-right direction X. In this embodiment, multiple terminals 2 in each adjacent row are completely staggered in the front-to-back direction Y (refer to...). Figure 7 ).
[0035] like Figure 1 , Figure 7As shown, each terminal branch is formed by stamping from a metal sheet and includes a fixing part 21, a spring arm 22 connecting the fixing part 21, a contact part 23, and a connecting section 24 located between the spring arm 22 and the contact part 23. The connecting section 24 connects the spring arm 22 and the fixing part 21. The contact part 23 is located above the fixing part 21 and extends in the left-right direction X. The width of the contact part 23 is smaller than the width of the spring arm 22. The terminal branch of the grounding terminal 2G is defined as grounding terminal branch G1, and the terminal branch of the signal terminal 2S is defined as signal terminal branch S1. For a signal terminal branch S1 and a grounding terminal branch G1 located in two adjacent rows, looking downwards, the spring arm 22 of the signal terminal branch S1 and the spring arm 22 of the grounding terminal branch G1 are side by side. The two adjacent grounding terminal branches G1 are integrally connected by a bridging part 26.
[0036] like Figure 1 and Figure 7 and Figure 8 As shown, the fixing part 21 is a vertically extending plate-like structure. The two fixing parts 21 of each terminal 2 are arranged facing each other in the front-back direction Y and are housed in the corresponding terminal slot 13. The two fixing parts 21 of the two grounding terminals 2G arranged side by side are connected as a whole by the bridging part 26. That is, for two adjacent grounding terminals 2G housed in one unit, the two fixing parts 21 of each two adjacent grounding terminal branches G1 are connected as a whole by a corresponding bridging part 26. The two bridging parts 26 between the two grounding terminals 2G are arranged facing each other in the front-back direction. The bridging part 26 is housed in the groove 16 and shields the corresponding signal terminal 2S in the front-back direction Y.
[0037] like Figure 2 , Figure 5 and Figure 6 As shown, looking downwards, the upper protrusion 14 is located between the two bridging portions 26, and one of the two fixing portions 21 of the same grounding terminal 2G is located in front of the upper protrusion 14 and the other is located behind the upper protrusion 14.
[0038] like Figures 1 to 3 As shown, for a grounding terminal 2G and a signal terminal 2S arranged adjacent to each other in the front-back direction Y, the distance L1 between the two fixing parts 21 of the grounding terminal 2G in the front-back direction Y is less than the distance L2 between the two fixing parts 21 of the signal terminal 2S, and the shortest distance L3 between the fixing part 21 of the grounding terminal 2G and the fixing part 21 of the adjacent signal terminal 2S in the front-back direction Y is greater than the distance L1 between the two fixing parts 21 of the grounding terminal 2G.
[0039] like Figure 1 , Figure 6 and Figure 7 As shown, the spring arm 22 extends upward from the fixing part 21. The spring arm 22 can elastically deform under force. The two spring arms 22 of each terminal 2 are arranged facing each other. The width of the spring arm 22 of the grounding terminal branch G1 is smaller than the width of the spring arm 22 of the signal terminal branch S1. The two connecting segments 24 of the grounding terminal 2G extend obliquely in the left-right direction X towards the side opposite to each other. The two connecting segments 24 of the grounding terminal 2G are partially staggered in the front-back direction Y. The two connecting segments 24 of the signal terminal 2S are completely aligned in the front-back direction Y. In other embodiments, the two connecting segments 24 of the grounding terminal 2G may also be completely staggered in the front-back direction Y.
[0040] like Figure 4 and Figure 7 As shown, the two contact portions 23 of each terminal 2 are staggered one after the other, and the two contact portions 23 of the two terminal branches of each terminal 2 abut against the same conductive pad 3 of the upper docking element 200.
[0041] like Figure 1 , Figure 4 and Figure 6 As shown, each terminal branch also includes an abutment portion 25 located below the fixing portion 21. The abutment portion 25 and the contact portion 23 are arranged symmetrically above and below each other. The two abutment portions 25 of each terminal 2 abut downward together against the same metal pad 4 of the lower docking element 300.
[0042] The electrical connector 100 of this utility model also has the following beneficial effects:
[0043] 1. By setting the distance between the two fixing parts 21 of the grounding terminal 2G to be smaller than the distance between the two fixing parts 21 of the signal terminal 2S, the front-to-back distance between the grounding terminal 2G and the signal terminal 2S is increased, the capacitance at the location of the fixing part 21 of the signal terminal 2S is reduced (capacitance is inversely proportional to characteristic impedance), thereby increasing the characteristic impedance value, so that the overall impedance of the signal terminal 2S is within the specification line, that is, impedance matching, optimizing insertion and return loss, and improving high frequency.
[0044] 2. The two connecting segments 24 of the grounding terminal 2G extend obliquely in the left-right direction X towards the side opposite to each other, and the two connecting segments 24 of the grounding terminal 2G are at least partially staggered in the front-back direction Y, which helps to reduce the space occupied by the grounding terminal 2G.
[0045] 3. The spring arm 22 of the signal terminal branch S1 and the spring arm 22 of the grounding terminal branch G1 are arranged side by side, which is conducive to a denser arrangement of terminals 2, so that the insulating body 1 can accommodate more terminals 2 in a limited space.
[0046] 4. Each terminal 2 is composed of two independent terminal branches, which facilitates the adjustment of the arrangement of the terminals 2 and makes it easier for the ground terminal 2G and the signal terminal 2S to share the same mold in the manufacturing process, thereby reducing the manufacturing cost of the electrical connector 100.
[0047] 5. By setting the bridging part 26 and the groove 16, the multiple grounding terminals 2G are connected into one unit, which facilitates the assembly of the grounding terminals 2G onto the insulating body 1.
[0048] 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, characterized by, The application relates to an insulation body provided with a plurality of terminal grooves penetrating from top to bottom, and a plurality of terminals corresponding to the terminal grooves, including a differential signal pair and a ground terminal, each differential signal pair being composed of two differential signal terminals arranged side by side, and each terminal including two terminal branches arranged opposite to each other, the terminal branches including a contact part and a fixed part, the contact part being arranged above the fixed part, the fixed part being fixed and accommodated in the terminal groove, and the two contact parts of the two terminal branches of each terminal upwardly abutting against the same conductive pad of an upper mating element, wherein, for one ground terminal and one differential signal terminal arranged adjacent in the front-rear direction, the distance between the two fixed parts of the ground terminal in the front-rear direction is smaller than the distance between the two fixed parts of the differential signal terminal in the front-rear direction. The plurality of terminals are arranged in multiple rows in the front-rear direction, and two adjacent rows of terminals are arranged staggered in the front-rear direction, and each row of terminals is arranged aligned in the left-right direction, and for one ground terminal and one differential signal terminal arranged adjacent in the front-rear direction, the shortest distance between the fixed part of the ground terminal and the fixed part of the differential signal terminal adjacent to the ground terminal in the front-rear direction is greater than the distance between the two fixed parts of the ground terminal. Each terminal branch further includes a spring arm and a connecting segment connecting the spring arm and the contact part, the spring arm extending upwardly from the fixed part, and the width of the contact part in the left-right direction is smaller than the width of the spring arm, and the two fixed parts and the two spring arms of each terminal are arranged opposite in the front-rear direction, and the two contact parts in the terminal groove are staggered in the front-rear direction. The two connecting segments of the ground terminal extend inclined to one side away from each other in the left-right direction, the two connecting segments of the ground terminal are at least partially staggered in the front-rear direction, and the two connecting segments of the differential signal terminal are completely aligned in the front-rear direction.
2. The electrical connector of claim 1, wherein: Each terminal branch further includes a spring arm extending upwardly from the fixed part, the spring arm being located between the fixed part and the contact part and being elastically deformable under force, the terminal branch of the ground terminal is defined as a ground terminal branch, and the terminal branch of the differential signal terminal is defined as a signal terminal branch, and in the left-right direction, the width of the spring arm of the ground terminal branch is smaller than the width of the spring arm of the signal terminal branch, and for one signal terminal branch and one ground terminal branch located in two rows adjacent in the front-rear direction, the spring arm of the signal terminal branch and the spring arm of the ground terminal branch are arranged side by side in the left-right direction when viewed downward.
3. The electrical connector of claim 1, wherein: The ground terminal has a plurality of ground terminals, and the insulation body has at least one upper protrusion for upwardly supporting the upper mating element, and when viewed downward, the upper protrusion is located between two ground terminals arranged side by side in the left-right direction, but not located between the ground terminals and the adjacent differential signal terminals and between the two differential signal terminals of one differential pair.
4. The electrical connector of claim 3, wherein: 5. The electrical connector of claim 1, wherein: 6. The electrical connector of claim 1, wherein: 7. The electrical connector of claim 6, wherein: The two fixing portions of the two ground terminals are integrally connected by a bridging portion, and viewed from below, the upper protrusion is located between the two bridging portions, and one of the two fixing portions of the same ground terminal is located in front of the upper protrusion and the other is located behind the upper protrusion.
8. The electrical connector of claim 1, wherein: The two ground terminals are arranged side by side and adjacent to each other, one differential signal terminal and two ground terminals are arranged in two rows adjacent to each other in front and back, the differential signal terminal is located between the two ground terminals in the left-right direction, the terminal branch of the ground terminal is defined as a ground terminal branch, the terminal branch of the differential signal terminal is defined as a signal terminal branch, the two ground terminal branches adjacent to each other in left and right are integrally connected by a bridging portion, the terminal slot accommodating the ground terminal is defined as a ground terminal slot, the terminal slot accommodating the differential signal terminal is defined as a signal terminal slot, a groove communicates the two adjacent ground terminal slots in left and right, and the signal terminal slot communicates with the adjacent groove in the front and back direction, the bridging portion is located in the groove and shields the differential signal terminal in the front and back direction.
9. An electrical connector, characterized by Comprise: An insulating body provided with a plurality of terminal slots penetrating up and down; A plurality of terminals corresponding to the plurality of terminal slots, including signal terminals and ground terminals, each terminal having a contact portion and two fixing portions arranged opposite to each other in front and back, the contact portion being located above the fixing portion, the contact portion being used for elastically abutting an upper counterpart element upward, the fixing portion being fixed and accommodated in the terminal slot, wherein for one ground terminal and one signal terminal arranged adjacent to each other in the front and back direction, the distance between the two fixing portions of the ground terminal in the front and back direction is less than the distance between the two fixing portions of the signal terminal.
10. The electrical connector of claim 9, wherein: The plurality of terminals are arranged in multiple rows in the front and back direction, and adjacent two rows of terminals are arranged staggered in the front and back direction, each row of terminals is aligned in the left and right direction, and for one ground terminal and one differential signal terminal arranged adjacent to each other in the front and back direction, the shortest distance between the fixing portion of the ground terminal and the fixing portion of the signal terminal adjacent to it in front and back in the front and back direction is greater than the distance between the two fixing portions of the ground terminal.