CN-122000743-A - Electric connector structure and manufacturing method thereof

CN122000743ACN 122000743 ACN122000743 ACN 122000743ACN-122000743-A

Abstract

The invention provides an electric connector structure and a manufacturing method thereof, wherein the electric connector structure comprises a plurality of cables, a wire frame group, a circuit board and a circuit board, wherein the plurality of cables comprise a plurality of front-row cables with long lengths and a plurality of rear-row cables with short lengths, the front-row cables and the rear-row cables are staggered, the wire frame group is formed outside the plurality of cables, a preset interval is formed between the front-row cables and the rear-row cables which are adjacent to each other, a plurality of front-row welding pad groups for welding wire cores of the front-row cables of the wire frame group and a plurality of rear-row welding pad groups for welding wire cores of the rear-row cables are arranged on at least one surface, a plurality of joints are arranged on the other side of the plurality of front-row welding pad groups relative to the plurality of rear-row welding pad groups, and the front-row welding pad groups and the rear-row welding pad groups are staggered.

Inventors

WU ZHUCHENG
WANG RUIPING
Mickey. Felton

Assignees

宏致电子股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241105

Claims (11)

1. The utility model provides an electric connector structure which characterized in that, including an insulator body, and be equipped with in this insulator body inside: the cables comprise a plurality of front cables with longer lengths and a plurality of rear cables with shorter lengths, and the front cables and the rear cables are staggered; a wire frame assembly formed outside the cables and having a predetermined distance between the front and rear cables, and The circuit board is provided with a plurality of front-row welding pad groups for welding the wire cores of the front-row cables on the front side of the wire frame group and a plurality of back-row welding pad groups for welding the wire cores of the back-row cables on at least one surface, a plurality of contacts are arranged on the other side of the front-row welding pad groups relative to the back-row welding pad groups, the front-row welding pad groups and the back-row welding pad groups are staggered, and the far-end crosstalk problem when transmitting high-frequency signals is improved according to the front-row cables and the back-row cables which are staggered front and back on the circuit board.
2. The electrical connector structure of claim 1, wherein the wire frame assembly comprises an upper wire frame and a lower wire frame which can be combined with each other through a clamping tenon and a clamping groove, a plurality of positioning grooves are arranged on the opposite outer sides of the upper wire frame and the lower wire frame, a plurality of convex buckles for sleeving and positioning a plurality of buckling grooves of a grounding plate are arranged on the plurality of positioning grooves, the top ends of the plurality of convex buckles are deformed and expanded in a heating and pressing mode to fix the grounding plate, and the grounding plate is fixed on the opposite outer sides of the upper wire frame and the lower wire frame.
3. The electrical connector structure of claim 2, wherein one side of the grounding plate comprises a plurality of fixing portions with the buckling grooves therein and a plurality of welding portions extending downwards from the other side, and at least one grounding pin welded on the front row of welding pad sets is formed at the tail end of each welding portion.
4. The electrical connector structure of claim 1, wherein the front cable and the rear cable each comprise four wires, two signal wires located at a central position and two grounding wires located at two outer sides, the front pad set and the rear pad set of the circuit board are respectively provided with four parallel pads corresponding to the wires of the front cable and the wires of the rear cable, the widths of the four parallel front pad sets at the outer positions are larger than the widths of the two central positions, and the two grounding wires and the grounding pin of the grounding piece are simultaneously coupled to the outer positions of the front pad set.
5. The electrical connector structure of claim 1, wherein the insulative housing comprises an outer housing and an inner housing, wherein the outer housing is provided for the circuit board to be fastened and fixed, and the inner housing provided for the wire frame assembly to be fixed is fixed inside the outer housing by fastening the inner housing with a fixing slot of the outer housing and an in-mold injection method.
6. The electrical connector structure of claim 5, wherein the top side of the outer housing of the housing has a receiving slot, wherein the receiving slot receives a locking spring formed of a metal plate, wherein the top side of the locking spring has a lacing hole, and wherein a pull strap for unlocking is installed in the lacing hole.
7. A method of manufacturing an electrical connector, comprising the steps of: s1, providing a plurality of front cables with longer lengths and a plurality of rear cables with shorter lengths, wherein the front cables and the rear cables are staggered; S2, forming a wire frame group outside the plurality of cables through plastic injection molding; S3, bending the front cables on the front side of the wire frame group to form avoidance, stripping the rear cables and exposing the wire cores; S4, stripping the avoided front cables and exposing the cable cores; S5, firstly welding the rear cables on the rear welding pad groups of the circuit board, and then resetting and welding the avoided front cables on the front welding pad groups of the circuit board, wherein the front welding pad groups and the rear welding pad groups are staggered.
8. The method of manufacturing an electrical connector as recited in claim 7, wherein the step S3 and the step S4 further comprise a step S31 of rotating the wire frame assembly by ninety degrees to rotate the front cables to the positions where the rear cables are stripped, and then executing the step S4.
9. The method of manufacturing an electrical connector according to claim 7, further comprising the step S6 of forming a frame assembly including an upper frame and a lower frame, wherein a plurality of protruding buckles for positioning the grounding plate are disposed on opposite outer sides of the upper frame and the lower frame, and the plurality of protruding buckles deform and expand the top ends to fix the grounding plate by heating and pressing, so that the grounding plate is fixed on opposite outer sides of the upper frame and the lower frame.
10. The method of manufacturing an electrical connector according to claim 7, further comprising the step S7 of inserting the assembled wire frame assembly of the grounding plate into the outer housing of the insulative housing to form a positioning, engaging the circuit board with the outer housing to form a fixing, pushing the inner housing of the insulative housing from the rear side of the wire frame assembly, and fixing the inner housing in the outer housing by a snap-fit and fixing slot and an in-mold injection method.
11. The method of manufacturing an electrical connector according to claim 7, further comprising the step S8 of installing a locking spring on a top side of the outer housing of the insulative housing, and installing a pull strap on a top side of the locking spring.

Description

Electric connector structure and manufacturing method thereof Technical Field The invention relates to an electric connector structure and a manufacturing method thereof, in particular to a structure and a manufacturing method thereof, wherein a plurality of front cables and a plurality of rear cables in the electric connector are arranged in a front-back staggered way on a circuit board to improve the problem of Far-End Crosstalk (FEXT) when transmitting high-frequency signals, and a wire frame group formed outside the plurality of cables can provide a fixed distance between the front cables and the rear cables so as to reduce the coupling effect between adjacent cables and improve the problems of Near-End Crosstalk (NEXT) and Far-End Crosstalk of the cables. Background To maintain optimal electrical characteristics in the cable coupled to the electronic device, it is necessary to avoid the discontinuity of the system impedance to maintain a fixed impedance, and to provide an electrical connector that creates a discontinuity impedance at the interface between the cable and the electronic device, further creating Insertion Loss (Insertion Loss) with reduced signal strength, and reflection Loss (Return Loss) where the signal is reflected back to the signal source. As mentioned above, the insertion loss is related to the length of the cable and the number of connection points, and the loss is greater as the cable is longer or the connection points are more. The reflection loss refers to the energy reflected back to the signal source due to impedance mismatch or discontinuity in the signal transmission process in the conductor, and these parameters have important effects on the transmission speed, integrity and reliability of the high-frequency signal. In addition, near-End Crosstalk (NEXT) and Far-End Crosstalk (FEXT) are two common problems in high frequency characteristics. Where near-end crosstalk refers to interference signals coupled to adjacent cables near the signal source and affecting signal integrity. Far-end crosstalk refers to interference signals coupled to adjacent cables and causing signal distortion near the signal receiving end. The effect of far-end crosstalk is typically greater than near-end crosstalk because it accumulates interference signal energy over the length of the cable. As a result of the foregoing problems associated with the coupling of the cable to the electrical connector, the industry is required to optimize the structure of the electrical connector. Disclosure of Invention In view of the foregoing problems and drawbacks, it is therefore an objective of the present invention to provide an electrical connector structure and a method for manufacturing the same. The invention provides an electric connector structure, which is characterized by comprising an insulating body, wherein the insulating body is internally provided with: the cables comprise a plurality of front cables with longer lengths and a plurality of rear cables with shorter lengths, and the front cables and the rear cables are staggered; a wire frame assembly formed outside the cables and having a predetermined distance between the front and rear cables, and The circuit board is provided with a plurality of front-row welding pad groups for welding the wire cores of the front-row cables on the front side of the wire frame group and a plurality of back-row welding pad groups for welding the wire cores of the back-row cables on at least one surface, a plurality of contacts are arranged on the other side of the front-row welding pad groups relative to the back-row welding pad groups, the front-row welding pad groups and the back-row welding pad groups are staggered, and the far-end crosstalk problem when transmitting high-frequency signals is improved according to the front-row cables and the back-row cables which are staggered front and back on the circuit board. The electric connector structure comprises a wire frame group, wherein the wire frame group comprises an upper wire frame and a lower wire frame which can be mutually combined through a clamping tenon and a clamping groove, a plurality of positioning grooves are formed in the opposite outer sides of the upper wire frame and the lower wire frame, a plurality of convex buckles for sleeving and positioning a plurality of buckling grooves of a grounding plate are arranged on the plurality of positioning grooves, the top ends of the plurality of convex buckles are deformed and expanded in a heating and pressing mode to fix the grounding plate, and therefore the grounding plate is fixed on the opposite outer sides of the upper wire frame and the lower wire frame. The electric connector structure comprises a plurality of fixing parts with the buckling grooves in one side of the grounding piece and a plurality of welding parts with the other side bent downwards and extended, wherein at least one grounding pin welded and fixed on the front row of welding pad groups