Electric connector structure

Abstract

The invention provides an electric connector structure, comprising: a plurality of cables including a plurality of long front-row cables and a plurality of short rear-row cables, the front-row cables and the rear-row cables being arranged in a staggered manner; the wire frame group is formed outside the plurality of cables and enables a preset distance to be formed between the adjacent front-row cable and the rear-row cable, and a plurality of convex buckles are arranged on the top side of the wire frame group; and the grounding piece comprises a plurality of catching grooves which are sleeved and positioned on the plurality of convex buckles, the grounding piece is of a flat plate-shaped structure, and the cable holder group formed outside the plurality of cables can provide a fixed distance between the front-row cable and the rear-row cable so as to reduce the coupling effect between the adjacent cables and improve the reliability of the cable holder group. And electromagnetic waves generated when the plurality of cables transmit high-frequency signals are absorbed through the grounding sheet, so that the electromagnetic interference effect is greatly reduced.

Description

Technical Field

[0001] This invention relates to an electrical connector structure, particularly to an electrical connector in which a wire frame assembly formed on the outside of a plurality of cables provides a fixed spacing between the front and rear rows of cables to reduce the coupling effect between adjacent cables, and absorbs the electromagnetic waves generated when the plurality of cables transmit high-frequency signals through a grounding plate, thereby significantly reducing electromagnetic interference. The grounding plate has a flat plate structure to form good current conduction and prevent heat accumulation. Background Technology

[0002] To maintain optimal electrical characteristics when cables are coupled to electronic devices, it is necessary to avoid system impedance discontinuities in order to maintain a fixed impedance. Setting up an electrical connector between the cable and the electronic device will create discontinuities in impedance at the connection point, which will further lead to insertion loss, which reduces signal strength, and return loss, which causes the signal to be reflected back to the signal source.

[0003] As mentioned above, insertion loss is related to cable length and the number of connection points; the longer the cable or the more connection points, the greater the loss. Reflection loss, on the other hand, refers to the energy reflected back to the signal source during signal transmission within a conductor due to impedance mismatch or discontinuity. These parameters have a significant impact on the transmission speed, integrity, and reliability of high-frequency signals.

[0004] Furthermore, in high-frequency applications, near-end crosstalk (NEXT) and far-end crosstalk (FEXT) are two common problems. Near-end crosstalk refers to interference signals coupling to adjacent cables near the signal source, affecting signal integrity. Far-end crosstalk refers to interference signals coupling to adjacent cables near the signal receiver, causing signal distortion. The impact of far-end crosstalk is generally greater than that of near-end crosstalk because its cumulative interference signal energy increases with cable length. Due to these issues when cables are coupled to electrical connectors, those in this industry need to address them through optimized connector structures. Summary of the Invention

[0005] Therefore, in view of the above-mentioned problems and deficiencies, the main objective of the present invention is to provide an electrical connector structure.

[0006] This invention provides an electrical connector structure, characterized in that it includes an insulating body, and the insulating body contains:

[0007] The plurality of cables includes a plurality of front-row cables of longer length and a plurality of rear-row cables of shorter length, wherein the front-row cables and the rear-row cables are arranged in an alternating pattern.

[0008] A cable tray assembly is formed on the outside of the plurality of cables, creating a predetermined spacing between adjacent front and rear rows of cables. A plurality of protruding buckles are provided on the top side of the cable tray assembly.

[0009] A grounding plate includes a plurality of buckle slots that are fitted and positioned on the plurality of protrusions, and the grounding plate is in the shape of a flat plate. The wire frame assembly formed on the outside of the plurality of cables can provide a fixed spacing between the front row of cables and the rear row of cables to reduce the coupling effect between adjacent cables, and absorb the electromagnetic waves generated when the plurality of cables transmit high-frequency signals through the grounding plate, thereby greatly reducing the electromagnetic interference effect.

[0010] The electrical connector structure further includes a circuit board having a plurality of front row solder pads for soldering the cores of the plurality of front row cables on at least one surface, and a plurality of rear row solder pads for soldering the cores of the plurality of rear row cables. A plurality of contacts are provided on the other side of the plurality of front row solder pads relative to the plurality of rear row solder pads, and the front row solder pads and the rear row solder pads are arranged alternately.

[0011] The electrical connector structure includes an upper and lower cable frame that can be joined together by a latch and a slot. A plurality of positioning slots are provided on the opposite outer sides of the upper and lower cable frames. The plurality of protrusions of the cable frame assembly are deformed and expanded at their top ends by heating and pressing to fix the grounding plate, so that the grounding plate is fixed on the opposite outer sides of both the upper and lower cable frames.

[0012] The electrical connector structure includes: one side of the grounding piece includes a plurality of fixing portions having the retaining groove inside, and the other side includes a plurality of welding portions that bend downward and extend downward, and each welding portion has at least one grounding pin formed at the end of the front row of solder pads soldered to the circuit board.

[0013] The electrical connector structure, wherein: the plate-shaped body of the grounding plate is further provided with a plurality of abutting springs abutting against the outside of the plurality of front row cables and the plurality of rear row cables, and the abutting springs abutting against the front row cables and the abutting springs abutting against the rear row cables are set at an angle that differs by 180 degrees.

[0014] The aforementioned electrical connector structure includes: both the front and rear cables have four cores, namely two signal cores located in the center and two grounding cores located on the outer sides; the front and rear pad groups of the circuit board also form four parallel pads corresponding to the cores of the front and rear cables, and the width of the four parallel front pad groups at the two outer positions is greater than the width at the two central positions; the two grounding cores and the grounding pins of the grounding plate are simultaneously coupled to the two outer positions of the front pad groups.

[0015] The electrical connector structure, wherein: the insulating body includes an outer seat and an inner seat that are joined together, the outer seat is for the circuit board to be snapped and fixed, and the inner seat, for the wire frame assembly to be fixed, is fixed inside the outer seat by a snap-fit ​​and a fixing groove of the outer seat and by an in-mold injection molding process.

[0016] The electrical connector structure, wherein: the top side of the outer seat of the insulating body is provided with a receiving groove, and the receiving groove houses a locking spring piece made of a metal plate, and the top side of the locking spring piece has a lacing hole, and a pull strap for unlocking is installed in the lacing hole.

[0017] In the aforementioned electrical connector, the wire frame assembly formed on the outside of the multiple cables can provide a fixed spacing between the front and rear cables to reduce the coupling effect between adjacent cables. The grounding plate absorbs the electromagnetic waves generated when the multiple cables transmit high-frequency signals, thereby significantly reducing electromagnetic interference. The grounding plate has a flat plate structure to form good current conduction and prevent heat accumulation. Attached Figure Description

[0018] Figure 1 This is a perspective view of the electrical connector of the present invention.

[0019] Figure 2 This is a three-dimensional view of the electrical connector of the present invention from another perspective.

[0020] Figure 3 This is an exploded perspective view of the electrical connector of the present invention.

[0021] Figure 4 This is an exploded perspective view of the electrical connector of the present invention.

[0022] Figure 5 This is a side cross-sectional view of the electrical connector of the present invention.

[0023] Figure 6 This is a cross-sectional view of the electrical connector of the present invention from another side.

[0024] Figure 7 This is a more detailed exploded perspective view of the internal components of the electrical connector of the present invention.

[0025] Figure 8 This is a more detailed perspective exploded view of the internal components of the electrical connector of the present invention.

[0026] Figure 9 This is an exploded perspective view of another embodiment of the electrical connector of the present invention.

[0027] Figure 10 This is an exploded perspective view of another embodiment of the electrical connector of the present invention.

[0028] Figure 11 This is a cross-sectional side view of another embodiment of the electrical connector of the present invention.

[0029] Figure 12 This is another cross-sectional side view of another embodiment of the electrical connector of the present invention.

[0030] Figure 13 This is a more detailed exploded perspective view of the internal components of another embodiment of the electrical connector of the present invention.

[0031] Figure 14 This is a more detailed perspective exploded view of the internal components of another embodiment of the electrical connector of the present invention.

[0032] Explanation of reference numerals in the attached drawings: 1-Insulating body; 11-Outer base; 111-Fixing groove; 112-Accommodating groove; 12-Inner base; 121-Snap fastener; 13-Locking spring; 130-Tape hole; 14-Pull strap; 2-Cable; 21-Front row cable; 22-Rear row cable; 23-Signal wire core; 24-Grounding wire core; 3-Wire frame assembly; 31-Upper row wire frame; 311-Card slot; 312-Positioning groove; 313 - Protruding buckle; 32- Lower cable tray; 321- Clip; 322- Positioning groove; 323- Protruding buckle; 4- Circuit board; 41- Front row solder pad assembly; 42- Rear row solder pad assembly; 43- Contact point; 5- Grounding piece; 51- Fixing part; 510- Buckle groove; 52- Welding part; 521- Grounding foot; 6- Grounding piece; 61- Fixing part; 610- Buckle groove; 62- Welding part; 621- Grounding foot; 63- Holding spring. Detailed Implementation

[0033] To achieve the above objectives and effects, the technical means and structure adopted by the present invention are described in detail below with reference to the accompanying drawings, so as to facilitate a complete understanding.

[0034] Please see Figures 1 to 8 The figures shown are, respectively, a three-dimensional appearance view, another perspective three-dimensional appearance view, an exploded three-dimensional view, another perspective exploded three-dimensional view, a side sectional view, another side sectional view, a more detailed exploded three-dimensional view of the internal components, and a more detailed exploded three-dimensional view of the internal components from another perspective. As can be clearly seen from the figures, the present invention provides an electrical connector structure, mainly comprising an insulating body 1; and a plurality of cables 2, a wire frame assembly 3, and a circuit board 4 disposed within the insulating body 1. The main components and features are detailed below:

[0035] The plurality of cables 2 includes a plurality of longer front-row cables 21 and a plurality of shorter rear-row cables 22, and the front-row cables 21 and the rear-row cables 22 are arranged in an alternating pattern.

[0036] The cable tray assembly 3 is formed on the outside of the plurality of cables 2 and forms a predetermined distance between the adjacent front row cables 21 and the rear row cables 22. The aforementioned cable tray assembly 3 formed on the outside of the plurality of cables 2 can provide a fixed distance between the front row cables 21 and the rear row cables 22 to reduce the coupling effect between adjacent cables 2, and at the same time improve the problems of near-end crosstalk (NEXT) and far-end crosstalk (FEXT) of the cables 2.

[0037] As described above, the cable tray assembly 3 includes an upper cable tray 31 and a lower cable tray 32 that can be connected to each other via a latch 321 and a slot 311. Both the upper cable tray 31 and the lower cable tray 32 are made of integrally molded plastic material. A plurality of positioning slots 312 are provided on the opposite outer sides of the upper cable tray 31 and the lower cable tray 32. Each positioning slot 312 has a plurality of protruding buckles 313 for a plurality of latching slots 510 of a grounding piece 5 to be fitted and positioned. The protruding buckles 313 are deformed and expanded at their top ends by heat pressing to fix the grounding piece 5. The grounding piece 5 has a flat plate-like structure to achieve good current conduction and prevent heat accumulation, thus forming the opposite outer sides of the upper cable tray 31 and the lower cable tray 32. The grounding plate 5 is fixed on both sides; one side of the grounding plate 5 includes a plurality of fixing parts 51 with the internal groove 510, and a plurality of welding parts 52 extending downward on the other side, and at least one grounding foot 521 is formed at the end of each welding part 52 and welded to the front row of solder pads 41; the grounding plate 5 provided on the opposite outer side of the aforementioned upper cable tray 31 and lower cable tray 32 can absorb the electromagnetic waves generated when the cable 2 transmits high-frequency signals, and the grounding foot 521 of the grounding plate 5 can guide the current converted by the electromagnetic waves to the front row of solder pads 41 of the circuit board 4, and then guide it from the front row of solder pads 41 to the grounding area of ​​the inner layer of the circuit board 4 or other components for elimination, thereby greatly reducing the electromagnetic interference (EMI) effect.

[0038] The circuit board 4 has at least one surface provided with a plurality of front row solder pads 41 for soldering the cores (including signal cores 23 and ground cores 24) of the plurality of front row cables 21 on the front side of the cable tray assembly 3, and a plurality of rear row solder pads 42 for soldering the cores (including signal cores 23 and ground cores 24) of the plurality of rear row cables 22. A plurality of contacts 43 are provided on the other side of the plurality of front row solder pads 41 opposite to the plurality of rear row solder pads 42. The plurality of contacts 43 can provide inter-connection connectors (not shown) for corresponding coupling and electronic signal transmission. The front row solder pads 41 and the rear row solder pads 42 are arranged in an alternating manner. The alternating arrangement of the plurality of front row cables 21 and the plurality of rear row cables 22 on the circuit board 4 improves the far-end crosstalk problem when transmitting high-frequency signals.

[0039] The aforementioned insulating body 1 includes an outer seat 11 and an inner seat 12 that are connected to each other. The outer seat 11 is used to snap and fix the circuit board 4, while the inner seat 12, which is used to fix the wire frame assembly 3, is fixed inside the outer seat 11 by a snap 121 and the fixing groove of the outer seat 11 and by an in-mold injection molding process. The spacing between the outer seat 11, the inner seat 12, and the plurality of cables 2 is filled with plastic material to control impedance changes and reduce insertion loss and return loss. The top side of the outer seat 11 of the insulating body 1 is provided with a receiving groove 112, and the receiving groove 112 houses a locking spring piece 13 made of a metal plate. The top side of the locking spring piece 13 has a lacing hole 130, and a pull strap 14 for unlocking is installed in the lacing hole 130.

[0040] The aforementioned front cable 21 and rear cable 22 each include four wire cores: two signal wire cores 23 located in the center and two grounding wire cores 24 located on the outer sides. The front pad group 41 and the rear pad group 42 of the circuit board 4 also form four parallel pads corresponding to the wire cores of the front cable 21 and the rear cable 22. The width of the front pad group 41, which has four parallel pads, is greater on the outer sides than on the center. The two grounding wire cores 24 and the grounding pins 521 of the grounding plate 5 are simultaneously coupled to the outer sides of the front pad group 41.

[0041] To assemble the electrical connector of the present invention, the steps are as follows: providing a plurality of cables 2, each consisting of a plurality of longer front-row cables 21 and a plurality of shorter rear-row cables 22, wherein the front-row cables 21 and the rear-row cables 22 are arranged in an alternating pattern; forming a wire frame assembly 3 on the outside of the plurality of cables 2 by plastic injection molding; bending the plurality of front-row cables 21 on the front side of the wire frame assembly 3 to create a clearance, and stripping the plurality of rear-row cables 22 to expose the plurality of wire cores (23, 24). Exposed; rotate the cable tray 3 by 90 degrees, so that the plurality of front row cables 21 are moved to the position for stripping the plurality of rear row cables 22; strip the plurality of front row cables 21 that have been avoided, exposing the plurality of wire cores (23, 24); first, solder the plurality of rear row cables 22 to the plurality of rear row solder pads 42 of a circuit board 4, then reset the plurality of front row cables 21 that have been avoided and solder them to the plurality of front row solder pads 41 of the circuit board 4, and the front row solder pads 4... 1. The rear row of solder pads 42 are arranged in an alternating pattern; the wire frame group 3 includes an upper wire frame 31 and a lower wire frame 32. On the opposite outer sides of the upper wire frame 31 and the lower wire frame 32, there are a plurality of protruding buckles (313, 323) for positioning the grounding piece 5 by fitting a plurality of buckle slots 510. The plurality of protruding buckles (313, 323) are deformed and expanded at their top ends by heating and pressing to fix the grounding piece 5, so that the grounding piece 5 is fixed on the opposite outer sides of both the upper wire frame 31 and the lower wire frame 32. Grounding piece 5; The wire frame assembly 3, which has been assembled with grounding piece 5, is inserted into the outer seat 11 of the insulating body 1 for positioning, and the circuit board 4 is locked into the outer seat 11 for fixation. Then, the inner seat 12 of the insulating body 1 is pushed in from the rear side of the wire frame assembly 3 and fixed inside the outer seat 11 by the buckle 121, the fixing groove 111, and the in-mold injection process. A locking spring piece 13 is installed on the top side of the outer seat 11 of the insulating body 1, and a pull strap 14 is installed on the top side of the locking spring piece 13.

[0042] Please see Figures 9-14 The figures shown are, respectively, an exploded perspective view, an exploded perspective view from another perspective, a cross-sectional side view, a cross-sectional side view, an exploded perspective view of the internal components in greater detail, and an exploded perspective view of the internal components in greater detail from another perspective, representing another embodiment of the electrical connector of the present invention. Figures 1 to 8The only difference between the disclosed structures is the construction of the grounding plate 6 in this embodiment and the aforementioned grounding plate 5. The other components, such as the insulating body 1, multiple cables 2, wire frame group 3 and circuit board 4, are the same, so they will not be described again. The grounding plate 6 in this embodiment also includes a fixing part 61, a fastening groove 610, a welding part 62, and a grounding foot 621. However, the grounding plate 6 in this embodiment is further provided with a plurality of abutting springs 63 in its plate-shaped body, which abut against the outside of the plurality of front row cables 21 and the plurality of rear row cables 22. The abutting springs 63 abutting against the front row cables 21 and the abutting springs 63 abutting against the rear row cables 22 are set at an angle that differs by 180 degrees. The plurality of abutting springs 63 in the aforementioned grounding plate 6 is the difference from the aforementioned grounding plate 5. The front row cables 21 and the rear row cables 22 are positioned by the abutting of the plurality of abutting springs 63, forming a stable and non-shaking state, which helps to improve the problem of near-end crosstalk and far-end crosstalk between adjacent cables 2.

[0043] The main feature of this invention is that in the electrical connector, the wire frame assembly formed on the outside of the plurality of cables 2 can provide a fixed spacing between the front row of cables 21 and the rear row of cables 22 to reduce the coupling effect between adjacent cables 2, and absorb the electromagnetic waves generated when the plurality of cables 2 transmit high-frequency signals through the grounding plates (5, 6), thereby greatly reducing the electromagnetic interference effect. The grounding plates (5, 6) are in the form of flat plates to form good current conduction and prevent heat accumulation.

[0044] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Therefore, any simple modifications and equivalent structural changes made based on the description and drawings of the present invention should also be included within the patent scope of the present invention.

Claims

1. An electrical connector structure, characterized in that, It includes an insulating body, and inside the insulating body are: The plurality of cables includes a plurality of front-row cables of longer length and a plurality of rear-row cables of shorter length, wherein the front-row cables and the rear-row cables are arranged in an alternating pattern. A cable tray assembly is formed on the outside of the plurality of cables, creating a predetermined spacing between adjacent front and rear rows of cables. A plurality of protruding buckles are provided on the top side of the cable tray assembly. A grounding plate includes a plurality of buckle slots that are fitted and positioned on the plurality of protrusions, and the grounding plate is in the shape of a flat plate. The wire frame assembly formed on the outside of the plurality of cables can provide a fixed spacing between the front row of cables and the rear row of cables to reduce the coupling effect between adjacent cables, and absorb the electromagnetic waves generated when the plurality of cables transmit high-frequency signals through the grounding plate, thereby greatly reducing the electromagnetic interference effect.

2. The electrical connector structure as described in claim 1, characterized in that: It also includes a circuit board having a plurality of front row solder pads for soldering the cores of the plurality of front row cables on at least one surface, and a plurality of rear row solder pads for soldering the cores of the plurality of rear row cables. A plurality of contacts are provided on the other side of the plurality of front row solder pads relative to the plurality of rear row solder pads, and the front row solder pads and the rear row solder pads are arranged alternately.

3. The electrical connector structure as described in claim 1, characterized in that: The cable frame assembly includes an upper cable frame and a lower cable frame that can be connected to each other by a latch and a slot. A plurality of positioning slots are provided on the opposite outer sides of the upper cable frame and the lower cable frame. The plurality of protrusions of the cable frame assembly are deformed and expanded at the top by heating and pressing to fix the grounding plate, so that the grounding plate is fixed on the opposite outer sides of the upper cable frame and the lower cable frame.

4. The electrical connector structure as described in claim 1, characterized in that: The grounding plate includes a plurality of fixing parts with the groove inside on one side, and a plurality of welding parts that bend downward on the other side, and each welding part has at least one grounding foot at the end of the front row of solder pads that is soldered to the circuit board.

5. The electrical connector structure as described in claim 1, characterized in that: The plate-shaped body of the grounding plate is also provided with a plurality of abutting springs that abut against the outside of the plurality of front row cables and the plurality of rear row cables, and the abutting springs abutting against the front row cables and the abutting springs abutting against the rear row cables are set at an angle that differs by 180 degrees.

6. The electrical connector structure as described in claim 1, characterized in that: Both the front and rear cables include four wire cores: two signal wire cores located in the center and two grounding wire cores located on the outer sides. The front and rear pad groups of the circuit board also form four parallel pads corresponding to the wire cores of the front and rear cables. The width of the four parallel front pad groups at the two outer positions is greater than the width at the two central positions. The two grounding wire cores and the grounding pins of the grounding plate are simultaneously coupled to the two outer positions of the front pad groups.

7. The electrical connector structure as described in claim 1, characterized in that: The insulating body includes an outer seat and an inner seat that are joined together. The outer seat is used to snap and fix the circuit board, while the inner seat, which is used to fix the wire frame assembly, is fixed inside the outer seat by a snap-fit ​​and a fixing groove of the outer seat and by an in-mold injection molding process.

8. The electrical connector structure as described in claim 7, characterized in that: The outer base of the insulating body has a receiving groove on its top side, and the receiving groove contains a locking spring piece made of a metal plate. The top side of the locking spring piece has a lacing hole, and a pull strap for unlocking is installed in the lacing hole.

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