Structure of electric connector

Abstract

The utility model provides a structure of an electric connector, comprising an electrical module which comprises a tongue plate and is provided with a plurality of butt joint parts and a plurality of welding parts on two sides of at least one surface, and the plurality of welding parts are used for welding wire cores of a plurality of cables; the shell comprises a first shell body and a second shell body, the first shell body is used for containing and positioning the electrical module, the second shell body is combined with the first shell body, the joint of the first shell body and the second shell body is of an integrated structure formed through ultrasonic welding, and the shell is formed through the ultrasonic welding process. The method has the advantages of being high in forming speed, capable of saving cost, high in toughness and stable in production quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to a structure of an electric connector, in particular to a shell formed by ultrasonic welding process, which has the advantages of fast forming speed, cost saving, high toughness and stable product quality. BACKGROUND

[0002] In order to maintain a fixed impedance, cable coupling in electronic devices must avoid discontinuity of system impedance to maintain optimal electrical characteristics. An electric connector is provided between the cable and the electronic device to generate discontinuous impedance at the mating interface, further forming insertion loss of reduced signal strength, and return loss of signals reflected back to the signal source.

[0003] As mentioned above, insertion loss is related to the length and the number of mating interfaces. The longer the cable or the more mating interfaces, the greater the loss. Return loss refers to the energy reflected back to the signal source during signal transmission in the conductor due to impedance mismatch or discontinuity. These parameters have important influence on the transmission speed, integrity and reliability of high-frequency signals.

[0004] In addition, in high-frequency characteristics, 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 and affecting signal integrity. Far-end crosstalk refers to interference signals coupling to adjacent cables near the signal receiving end and causing signal distortion. The influence of far-end crosstalk is usually greater than that of near-end crosstalk, as the cumulative interference signal energy increases with cable length.

[0005] Furthermore, the bus of the Peripheral Component Interconnect Express (PCIe) specification is commonly used in electronic products as an interface for high-speed signal transmission. The Multi-Channel Input / Output (Mini Cool Edge O, MCIO) has become the mainstream specification in the market. With the pace of technological evolution, the MCIO interface rate has also increased with demand, from PCIe Gen4 to PCIe Gen6 and the latest PCIe Gen7 specification. In addition to the requirement for small size, MCIO interface connectors also need excellent high-speed signal transmission stability.

[0006] In the prior art, the insulating shell is made by insert molding process. The insert molding process needs a great pressure to inject the molten plastic into the mold. The process inherently has a disadvantage that the molten material cannot be uniformly injected into the cavity of the mold, resulting in uneven and not strong structure of the insulating shell. Furthermore, the plastic material must be heated and additionally heated during the insert molding process, prolonging the production time and energy consumption. In addition, the plastic material forms excess flash outside the plastic part and penetrates into the cable core and the solder pad, affecting impedance matching and being not conducive to high-frequency transmission of electronic signals. In addition, when the tongue plate and the cable are not fixed firmly during the molding of the tongue plate and the external shell of the cable, the cable will be twisted and pulled off from the solder pad, resulting in low production yield and insufficient structural strength of the cable connector. The foregoing problems need to be solved by optimizing the structure of the electrical connector. Content of the utility model

[0007] Therefore, in view of the foregoing problems and deficiencies, the main purpose of the utility model is to provide a structure of an electrical connector.

[0008] The utility model provides a structure of an electrical connector, characterized by comprising:

[0009] An electrical module comprises a tongue plate, a plurality of pairs of interface parts and a plurality of soldering parts are arranged on two sides of at least one surface of the tongue plate, and the plurality of soldering parts are used for soldering the cores of a plurality of cables; and

[0010] A shell comprises a first shell for accommodating and positioning the electrical module, and a second shell combined with the first shell, and the joint of the first shell and the second shell is formed into an integral structure by ultrasonic welding, the rear ends of the two side plates of the first shell are recessed to form first welding parts towards the electrical module, the two side plates of the second shell correspond to the first welding parts to form second welding parts, and the joint of the first welding parts and the second welding parts is provided with a buckle, a buckle groove, a clamping strip and a positioning groove.

[0011] The structure of the electrical connector, wherein: the first shell has a containing chamber for accommodating the electrical module, and the containing chamber is formed with an interface opening at the front end for the side of the tongue plate provided with the plurality of interface parts to protrude outwards.

[0012] The structure of the electrical connector, wherein: the first shell is provided with a containing groove at the top side, and the containing groove accommodates a locking spring plate composed of a metal plate, and the top side of the locking spring plate has a lanyard hole, and the lanyard hole is provided with a lanyard for unlocking.

[0013] The structure of the electric connector, wherein: the electric module is further sleeved with a wire rack outside the plurality of cables, and the wire rack is outwardly protruded with a guide block on both sides, and the bottom plate surface of the second shell is formed with a positioning groove for accommodating the wire rack, and the inner wall surface of the two side plates of the second shell is recessed with a limiting groove for slidingly accommodating the two guide blocks; and a plurality of positioning blocks and a plurality of grooves capable of interfering with each other are arranged between the bottom surface of the wire rack and the bottom plate surface of the second shell.

[0014] The structure of the electric connector, wherein: the top side and the bottom side of the wire rack are provided with a plurality of protruding buckles, and the plurality of protruding buckles are respectively sleeved with a plurality of positioning holes corresponding to a long side of a shielding plate, and then are fixed by heat expansion, and a plurality of grounding feet are arranged on the other long side of the two shielding plates and welded on the plurality of welding parts of the tongue plate; the two short sides of the two shielding plates are bent downward and extend into the fixing grooves corresponding to the tongue plate; a plurality of abutting spring pieces are formed in the two shielding plates and bent downward to abut against the insulating sheaths of the plurality of cables, and the plurality of abutting spring pieces are arranged according to cables of different lengths and staggered, and the arrangement angles of adjacent abutting spring pieces are different by 180 degrees.

[0015] The structure of the electric connector, wherein: the plurality of cables include a plurality of front row cables with longer lengths and a plurality of rear row cables with shorter lengths, and the front row cables and the rear row cables are arranged in a staggered manner, and the front row cables and the rear row cables each include four wire cores, namely two signal wire cores at central positions and two ground wire cores at outer sides.

[0016] The structure of the electric connector, wherein: the tongue plate is composed of a circuit board, and the plurality of butt joint parts and the plurality of welding parts are composed of copper foil layers arranged in the circuit board; or the tongue plate is composed of an insulating seat body, and the plurality of butt joint parts and the plurality of welding parts are composed of a plurality of conductive terminals arranged in the insulating seat body.

[0017] The utility model also provides a structure of an electric connector, characterized by comprising:

[0018] An electric module comprises a tongue plate, a plurality of butt joint parts and a plurality of welding parts are arranged on both sides of at least one surface of the tongue plate, and the plurality of welding parts are used for welding wire cores of a plurality of cables; and

[0019] A housing includes a first casing for accommodating and positioning the electrical module, and a second casing combined with the first casing, and the joint of the first casing and the second casing is formed into an integral structure by ultrasonic welding, and the rear end of the two side plates of the first casing is recessed to form a first welding portion at the electrical module, and the two side plates of the second casing are formed with a second welding portion corresponding to the first welding portion, and the joint of the first welding portion and the second welding portion is provided with a positioning structure of buckles, buckle grooves, clamping strips and positioning grooves; and the electrical module is further provided with a wire rack outside the plurality of cables, and the two sides of the wire rack are outwardly provided with a guide block, and the surface of the bottom plate of the second casing is formed with a positioning groove for accommodating the wire rack, and the inner wall surface of the two side plates of the second casing is recessed to form a limiting groove for slidingly accommodating the two guide blocks; and the wire rack bottom surface and the bottom plate surface of the second casing are provided with a plurality of positioning blocks and a plurality of grooves capable of interfering with each other.

[0020] Compared with the conventional injection molding process, the housing formed by the ultrasonic welding process has the following advantages:

[0021] 1. Fast molding speed: The ultrasonic welding process of the utility model only takes one second to complete, while the conventional injection molding process takes more than ten seconds.

[0022] 2. Cost saving: The ultrasonic welding process of the utility model does not require additional materials, and does not need to heat and additional heat the plastic raw materials, which has the advantages of short production time and energy saving.

[0023] 3. Higher toughness: The housing and the wire rack outside the cable formed by the ultrasonic welding process of the utility model can be fused and combined, so the assembly toughness is better than that of the conventional injection molding process, and the wire rack made of plastic material is fused with the first casing and the second casing to form an integral and stable structure by ultrasonic shock wave, which can prevent the tongue plate and the cable from being fixed inaccurately, and can correct the alignment structure of the tongue plate and the cable when the first casing is pressed and combined with the second casing; and when the electrical connector is inserted with the counter connector, the overall electrical module will not retreat due to stress, which can prevent the PIN or the core from being separated from the welding part to cause poor contact or electrical breakdown.

[0024] 4. Stable product quality: The ultrasonic welding process of the utility model does not have the overflow phenomenon, so it does not produce burrs and the thickness of the housing is uniform and more beautiful, and there is no need to remove the burrs by manpower. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a perspective view of the utility model electrical connector.

[0026] Figure 2 It is another perspective view of the utility model electrical connector.

[0027] Figure 3 It is partial stereoscopic exploded view of the electric connector of the utility model.

[0028] Figure 4 It is partial stereoscopic exploded view of the electric connector of the utility model from another perspective.

[0029] Figure 5 It is more detailed stereoscopic exploded view of the electric connector of the utility model.

[0030] Figure 6 It is more detailed stereoscopic exploded view of the electric connector of the utility model from another perspective.

[0031] Figure 7 It is stereoscopic exploded view of the shell of the utility model.

[0032] Figure 8 It is stereoscopic exploded view of the shell of the utility model from another perspective.

[0033] Figure 9 It is side view cross section of the electric connector of the utility model.

[0034] Figure 10 It is another side view cross section of the electric connector of the utility model.

[0035] Figure 11 It is still another side view cross section of the electric connector of the utility model.

[0036] Explanation of reference numerals: 1 - electrical module;11 - tongue plate;111 - butt joint part;112 - welding part;113 - fixed groove;12 - cable;121 - front row cable;122 - rear row cable;123 - signal wire core;124 - ground wire core;13 - wire rack;131 - guide block;132 - positioning block;133 - protruding buckle;14 - shielding plate;141 - positioning hole;142 - protruding spine;143 - grounding foot;144 - abutting elastic sheet;2 - shell;21 - first shell body;210 - containing chamber;2100 - butt joint opening;211 - first welding part;2111 - buckle;2112 - positioning groove;212 - containing groove;213 - locking elastic sheet;2130 - lacing hole;214 - pull belt;22 - second shell body;220 - positioning groove;221 - second welding part;2211 - buckle groove;2212 - clamping strip;222 - limiting groove;223 - recess. DETAILED DESCRIPTION

[0037] Please refer to Figures 1 to 11As shown, it is the three-dimensional appearance view, another perspective three-dimensional appearance view, partial three-dimensional exploded view, another perspective partial three-dimensional exploded view, more detailed three-dimensional exploded view, another perspective more detailed three-dimensional exploded view, three-dimensional exploded view of the shell, another perspective three-dimensional exploded view of the shell, side view, another side view and again side view of the utility model electric connector, can be clearly seen from the drawing, the utility model provides a kind of electric connector structure, mainly including electrical module 1 and shell 2, and detailed structure and connection relationship are as follows:

[0038] The electrical module 1 includes a tongue plate 11, a plurality of butt joint parts 111 and a plurality of welding parts 112 are arranged on both sides of at least one surface of the tongue plate 11, and the plurality of welding parts 112 are used for welding the core of the plurality of cables 12. Among them, the tongue plate 11 is composed of a circuit board (PCB), and the plurality of butt joint parts 111 and the plurality of welding parts 112 are composed of copper foil layers arranged in the circuit board; or the tongue plate 11 is composed of an insulating seat (not shown in the figure), and the plurality of butt joint parts 111 and the plurality of welding parts 112 are composed of a plurality of conductive terminals (not shown in the figure) arranged in the insulating seat. The two tongue plate 11 manufacturing methods are commonly used in the technical field and are not technical features, so no limitation is made.

[0039] The shell 2 includes a first shell 21 for accommodating and positioning the electrical module 1, and a second shell 22 combined with the first shell 21, and the junction of the first shell 21 and the second shell 22 is formed into an integral structure by ultrasonic welding (Ultrasonic Welding), and the rear end of the two side plates of the first shell 21 is recessed to form a first welding part 211 towards the electrical module 1, and the second shell 22 has a second welding part 221 corresponding to the first welding part 211, and the junction of the first welding part 211 and the second welding part 221 is provided with a buckle 2111, a buckle groove 2211, a clamping strip 2212 and a positioning structure of a positioning groove 2112.

[0040] The plurality of cables 12 includes a plurality of front row cables 121 with longer length and a plurality of rear row cables 122 with shorter length, and the front row cables 121 and the rear row cables 122 are staggered, and the front row cables 121 and the rear row cables 122 each include four cores, two signal cores 123 at the central position and two ground cores 124 at the two outer sides.

[0041] The electrical module 1 is further provided with a wire rack 13 outside the plurality of cables 12, and the wire rack 13 is provided with a guide block 131 outwardly protruding on both sides. The bottom surface of the second shell 22 is provided with a positioning groove 220 for accommodating the wire rack 13. The inner wall surface of the two side plates of the second shell 22 is recessed to form a limiting groove 222 for slidingly accommodating the two guide blocks 131. The bottom surface of the wire rack 13 and the bottom surface of the second shell 22 are provided with a plurality of positioning blocks 132 and a plurality of grooves 223 for mutual interference positioning. The top side and the bottom side of the wire rack 13 are provided with a plurality of protruding buckles 133, and the plurality of protruding buckles 133 are respectively provided with a long side of a shielding plate 14 for positioning hole 141 after expansion and fixation by hot melting. The other long side of the two shielding plates 14 is provided with a plurality of grounding feet 143 welded on the plurality of welding parts 112 of the tongue plate 11, so as to form a common grounding structure with multiple points of contact between the two shielding plates 14 and the tongue plate 11. The two short sides of the two shielding plates 14 are provided with protruding spurs 142 bent downward and extending into the fixing groove 113 corresponding to the tongue plate 11. The two shielding plates 14 are provided with a plurality of abutting springs 144 bent downward and abutting against the insulating sheath of the plurality of cables 12. The plurality of abutting springs 144 are arranged according to cables 12 of different lengths and staggered, and the arrangement angle of adjacent abutting springs 144 is different by 180 degrees.

[0042] The first shell 21 is provided with a receiving chamber 210 for accommodating the electrical module 1, and the front end of the receiving chamber 210 is provided with a docking opening 2100 for exposing one side of the tongue plate 11 provided with the plurality of docking parts 111. The top side of the first shell 21 is provided with a receiving groove 212 for accommodating a locking spring 213 made of a metal plate. The top side of the locking spring 213 is provided with a tie hole 2130 for accommodating a pull belt 214 for unlocking.

[0043] The utility model discloses a wire end connector, in actual assembly, first make tongue plate 11, plurality of cable 12, wire frame 13 and two shielding plates 14 assemble and form electrical module 1, make electrical module 1 through push and engage mode and be positioned in the containing chamber 210 of first shell 21, and make the plurality of butt joint parts 111 of tongue plate 11 front end expose from first shell 21, make first welding portion 211 of first shell 21 and second welding portion 221 of second shell 22 form alignment, and make the buckle 2111 of first welding portion 211 and the positioning groove 2112 and the buckle groove 2211 of second welding portion 221 and the card strip 2212 form the engagement positioning, then, after the pre-set pressurization jig is resisted on the top surface of first shell 21 and is applied to the pressure of second shell 22, can be applied to the joint of first welding portion 211 of first shell 21 and second welding portion 221 of second shell 22 supersonic oscillation wave, forms ultrasonic frequency friction at the joint of first welding portion 211 and second welding portion 221 and generates high temperature, can make the joint of first shell 21 and second shell 22 and melt and form integrated structure and complete assembly, and make first shell 21 and second shell 22 can be certainly resisted to the surface of cable 12, and can make the wire core of cable 12 more certainly contact on the welding portion 112 of tongue plate 11. Meanwhile, the top side and the bottom side of wire frame 13 formed by plastic material also melt and form integrated stable structure with first shell 21 and second shell 22 through supersonic oscillation wave, can prevent wire frame 13 from retreating after being stressed when wire end connector and mating connector (such as: board end connector) are inserted, can prevent the various problems such as poor contact or electrical breakdown of PIN or wire core and welding portion 112 separation.

[0044] The main features of the utility model are that the shell 2 of the electric connector is formed by ultrasonic welding process instead of the conventional insert molding process, which has the following advantages:

[0045] 1. Fast molding speed: the ultrasonic welding process of the utility model can be completed within one second, while the conventional insert molding process takes more than ten seconds.

[0046] 2. Cost saving: the ultrasonic welding process of the utility model does not require additional materials, and the plastic raw materials do not need to be baked and heated additionally, which has the advantages of short production time and energy saving.

[0047] 3. Higher toughness: the shell 2 and the cable 12 external wire holder of the ultrasonic welding process can produce fusion bonding, so the assembly toughness is better than the known injection molding process, and the wire holder 13 composed of plastic material is fused with the first shell 21 and the second shell 22 by supersonic shock wave to form a stable integrated structure, which can prevent the tongue plate 11 and the cable 12 from being fixed inaccurately, and correct the alignment structure of the tongue plate 11 and the cable 12 when the first shell 21 is pressed and combined with the second shell 22; and the wire holder 13 can prevent the problems of poor contact or electrical circuit breakage caused by PIN or core and welding part 112 separation when the electrical connector and the mating connector are inserted.

[0048] 4. Stable product quality: the ultrasonic welding process of the utility model does not have overflow phenomenon, so it does not produce burrs and the shell 2 is uniform in thickness and more beautiful, and does not need to remove burrs by manpower.

[0049] The above is only a preferred embodiment of the utility model, and does not limit the patent range of the utility model, so any simple modification and equivalent structural change of the utility model specification and the attached drawings should be included in the patent range of the utility model, and it is hereby declared.

Claims

1. A structure of an electrical connector, characterized by comprising: The application relates to an electric module and a shell thereof. The shell comprises a first shell body for accommodating and positioning the electric module, and a second shell body combined with the first shell body, and the joint of the first shell body and the second shell body is formed into an integral structure by ultrasonic welding, the rear ends of the two side plates of the first shell body are recessed to form first welding parts towards the electric module, the second shell body is provided with second welding parts corresponding to the first welding parts, and the joint of the first welding parts and the second welding parts is provided with a positioning structure of buckles, buckle grooves, clamping strips and positioning grooves. The first shell body is internally provided with a containing chamber for accommodating the electric module, and the front end of the containing chamber is provided with a connecting opening for exposing the side of the tongue plate provided with the plurality of connecting parts.

2. The structure of an electrical connector according to claim 1, wherein: The top side of the first shell body is provided with a containing groove for accommodating a locking elastic sheet made of a metal plate, and the top side of the locking elastic sheet is provided with a belt hole for unlocking.

3. The structure of an electrical connector according to claim 1, wherein: The electric module is further provided with a wire rack outside the plurality of cables, and the two sides of the wire rack are outwardly provided with guide blocks, the bottom plate surface of the second shell body is provided with positioning grooves for accommodating the wire rack, and the inner wall surfaces of the two side plates of the second shell body are recessed to form limiting grooves for slidingly accommodating the two guide blocks; and the bottom surface of the wire rack and the bottom plate surface of the second shell body are provided with a plurality of positioning blocks and a plurality of grooves capable of interfering with each other.

4. The structure of an electrical connector according to claim 1, wherein: The top side and the bottom side of the wire rack are provided with a plurality of convex buckles, and the plurality of convex buckles are respectively provided with a plurality of positioning holes corresponding to a long side of a shielding plate, and are sleeved and fixed by heat expansion; the other long side of the two shielding plates is provided with a plurality of grounding feet welded on the plurality of welding parts of the tongue plate; the two short sides of the two shielding plates are provided with convex spurs bent downward and extending into the fixing grooves corresponding to the tongue plate; the two shielding plates are provided with a plurality of abutting elastic sheets bent downward and abutting on the insulating sheaths of the plurality of cables, and the plurality of abutting elastic sheets are arranged according to cables of different lengths and staggered arrangement, and the arrangement angles of adjacent abutting elastic sheets are different by 180 degrees.

5. The structure of an electrical connector according to claim 4, wherein: The plurality of 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 arranged in a staggered manner, and the front cables and the rear cables each comprise four wire cores, namely two signal wire cores at central positions and two grounding wire cores at two outer sides.

6. The structure of an electrical connector according to claim 1, wherein: The tongue plate is made of a circuit board, and the plurality of connecting parts and the plurality of welding parts are made of copper foil layers in the circuit board; or the tongue plate is made of an insulating seat body, and the plurality of connecting parts and the plurality of welding parts are made of a plurality of conductive terminals penetrating the insulating seat body.

7. The structure of an electrical connector according to claim 1, wherein: The application relates to an electric module and a shell thereof.

8. A structure of an electrical connector, characterized by comprising: The shell comprises a first shell body for accommodating and positioning the electric module, and a second shell body combined with the first shell body, and the joint of the first shell body and the second shell body is formed into an integral structure by ultrasonic welding, the rear ends of the two side plates of the first shell body are recessed to form first welding parts towards the electric module, the second shell body is provided with second welding parts corresponding to the first welding parts, and the joint of the first welding parts and the second welding parts is provided with a positioning structure of buckles, buckle grooves, clamping strips and positioning grooves. ​ A housing includes a first casing for accommodating and positioning the electrical module, and a second casing combined with the first casing, and the joint of the first casing and the second casing is formed into an integral structure by ultrasonic welding, and the rear end of the two side plates of the first casing is recessed to form a first welding part at the electrical module, and the two side plates of the second casing are formed with a second welding part corresponding to the first welding part, and the joint of the first welding part and the second welding part is provided with a positioning structure of buckles, buckle grooves, clamping strips and positioning grooves; and the electrical module is further provided with a wire rack outside the plurality of cables, and the two sides of the wire rack are outwardly provided with a guide block, and the surface of the bottom plate of the second casing is formed with a positioning groove for accommodating the wire rack, and the inner wall surface of the two side plates of the second casing is recessed to form a limiting groove for slidingly accommodating the two guide blocks; and the bottom surface of the wire rack and the surface of the bottom plate of the second casing are provided with a plurality of positioning blocks and a plurality of grooves capable of interfering with each other for positioning.

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