Electric connector and manufacturing method thereof

Abstract

The invention discloses an electric connector and a manufacturing method of the electric connector, and the electric connector comprises a shielding housing which comprises an injection molding assembly and a conductive coating, the injection molding assembly comprises a metal part and a plastic part injection-molded on the metal part, the injection molding assembly comprises a plurality of accommodating grooves, and the conductive coating is plated on the groove walls of the accommodating grooves and the upper surface of the injection molding assembly. The metal piece comprises a connecting part, the connecting part is exposed on the upper surface of the plastic piece, and the connecting part is connected with a conductive coating plated on the upper surface of the injection molding assembly; the plurality of terminal modules are accommodated in the corresponding accommodating grooves, and each terminal module comprises an insulating part and a signal terminal fixed on the insulating part; and the grounding piece is welded on the upper surface of the connecting part. The grounding piece can be stably and electrically connected with the conductive plating layer through the metal piece, and the conductive plating layer cannot be damaged.

Description

Technical Field

[0001] This invention relates to an electrical connector and a method for manufacturing the electrical connector, and more particularly to an electrical connector with plastic electroplating and a method for manufacturing the electrical connector. Background Technology

[0002] Chinese invention patent CN202111332113.8 discloses a cable connector, which includes a conductive shell, a signal terminal, and a ground contact. The conductive shell can be made of plastic electroplating. The signal terminal is housed in the conductive shell. One side of the ground contact is electrically connected to the conductive shell, and the other side of the ground contact is used for electrical connection to the reference ground of the circuit board. The ground contact has an elastic element. In this way, when the cable connector is electrically connected to the circuit board, the ground contact can be squeezed by the conductive shell and the circuit board, so that the ground contact can make tight electrical contact with the reference ground of the circuit board under the pre-tightening force of the elastic element, thereby ensuring the reliability of the electrical connection between the conductive shell and the reference ground of the circuit board.

[0003] However, CN202111332113.8 does not teach how to electrically connect the ground contact to the conductive shell. In the actual production process of electrical connectors, if the conductive shell is made of plastic electroplating, the ground contact cannot be directly soldered to the conductive shell. Otherwise, the soldering process will damage the plating of the conductive shell. On the other hand, if the ground contact is assembled on the conductive shell using snap-fit ​​or other methods, it will make the manufacturing process of the ground contact more complicated. Moreover, when the snap-fit ​​structure of the ground contact is fixed on the conductive shell, it will scratch off the conductive plating on the conductive shell, affecting the shielding performance of the conductive shell and making the electrical connection between the ground contact and the conductive shell unstable.

[0004] Therefore, it is necessary to design an electrical connector structure to overcome the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an electrical connector and a method for manufacturing the electrical connector. The shielding shell includes an injection-molded component and a conductive plating layer plated on the injection-molded component. The injection-molded component includes a metal part and a plastic part injection-molded on the metal part. A grounding component is welded to the upper surface of the metal part, so that the grounding component can be stably electrically connected to the conductive plating layer.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an electrical connector, characterized in that it comprises: a shielding shell including an injection-molded component and a conductive plating layer, the injection-molded component including a metal part and a plastic part injection-molded on the metal part, the injection-molded component including a plurality of receiving grooves, the conductive plating layer being plated on the groove walls of the receiving grooves and the upper surface of the injection-molded component, the metal part including a connecting portion, the connecting portion being exposed on the upper surface of the plastic part, the connecting portion being connected to the conductive plating layer plated on the upper surface of the injection-molded component; a plurality of terminal modules, received in corresponding receiving grooves, each terminal module including an insulating component and a signal terminal fixed to the insulating component; and a grounding component, soldered to the upper surface of the connecting portion.

[0007] Furthermore, the plastic part has a recessed groove from the top surface downwards, and the metal part is fixed in the groove. The plastic part includes multiple first partitions and multiple second partitions. Multiple receiving slots are arranged side by side in the left-right direction and in multiple rows in the front-back direction. The first partition separates two adjacent receiving slots in the left-right direction, and the second partition separates two adjacent receiving slots in the front-back direction. A through groove is provided at the connection between the first partition and the second partition. The through groove passes through the plastic part in the up-down direction. The connecting part is located above the through groove and blocks the through groove. The grounding part is welded to the upper surface of the connecting part by laser welding.

[0008] Furthermore, multiple receiving slots are arranged side by side in the left-right direction. The injection molding assembly includes multiple metal parts, which are arranged side by side in the left-right direction. Each metal part is located between two adjacent receiving slots in the left-right direction. Each metal part includes a main body, a connecting part, and a bent part connecting the main body and the connecting part. The metal parts are made of sheet metal. The plate surface of the main body is perpendicular to the left-right direction, and the upper surface of the connecting part is a plate surface.

[0009] Furthermore, the metal part includes a plurality of first partition strips extending in the left-right direction, a plurality of second partition strips extending in the front-back direction, and a connecting part. The plastic part covers the two front-back opposite sides of the first partition strips and the two left-right opposite sides of the second partition strips. The connecting part connects adjacent first partition strips and second partition strips. The side of the connecting part extends with fixing ribs, which are completely embedded in the plastic part.

[0010] Furthermore, the plastic part includes multiple through slots running vertically through the center, with the metal part located above and blocking the through slots. The width of the lower half of the through slot in the left-right direction is greater than the width of the upper half of the through slot in the left-right direction.

[0011] Furthermore, the plastic part includes multiple first partitions and multiple second partitions, multiple receiving slots are arranged side by side in the left-right direction and in multiple rows in the front-back direction, the first partitions separate two adjacent receiving slots in the left-right direction, the second partitions separate two adjacent receiving slots in the front-back direction, and a through slot is provided at the connection of each first partition and the second partition, and the width of the lower half of the receiving slot in the left-right direction is smaller than the width of the upper half of the receiving slot in the left-right direction.

[0012] Furthermore, the metal part includes a plurality of first partition strips extending in the left-right direction and a plurality of second partition strips extending in the front-back direction. A connecting portion connects adjacent first partition strips and second partition strips. A portion of the first partition strip is exposed in the receiving groove, a portion of the second partition strip is exposed in the receiving groove, and a conductive plating layer plated on the wall of the receiving groove connects the portions of the first partition strips and the portions of the second partition strips exposed in the receiving groove.

[0013] Furthermore, the conductive plating layer includes a first nickel layer in contact with the surface of the plastic part, a copper layer located outside the first nickel layer, and a second nickel layer located outside the copper layer, and the thickness of the conductive plating layer is greater than or equal to 5.5 μm and less than or equal to 7.5 μm.

[0014] An electrical connector, characterized in that it comprises: a shielding shell including a metal part, a plastic part, and a conductive plating layer, wherein the plastic part is injection molded onto the metal part, the metal part includes multiple through holes, the plastic part includes multiple through slots, one through hole communicating downward with a corresponding through slot and the two together forming a receiving slot, the walls of the multiple receiving slots are all plated with the conductive plating layer, and the conductive plating layer is connected to the metal part; multiple terminal modules, received in corresponding receiving slots, each terminal module including an insulating part and a signal terminal fixed to the insulating part; and a grounding part soldered to the upper surface of the metal part.

[0015] Furthermore, the metal part includes a plurality of first dividing strips extending in the left-right direction and a plurality of second dividing strips extending in the front-back direction. The first dividing strips separate two adjacent perforations in the front-back direction, and the second dividing strips separate two adjacent perforations in the left-right direction. The conductive plating extends from the tank wall of the receiving tank to the upper surface of the first dividing strips and the second dividing strips, and the conductive plating on the tank walls of the plurality of receiving tanks is integrally connected.

[0016] Furthermore, the metal part includes a plurality of first partition strips extending in the left-right direction, a plurality of second partition strips extending in the front-back direction, and a connecting portion connecting adjacent first partition strips and second partition strips. The plastic part includes a plastic body and a protrusion. The connecting portion is located above the plastic body. The grounding part is welded to the upper surface of the connecting part. At least one first partition strip is provided with a fixing hole, and the protrusion is fixed to the fixing hole.

[0017] A method for manufacturing an electrical connector, characterized by comprising the following steps: providing a metal part, forming a plastic part on the metal part by injection molding, the metal part and the plastic part constituting an injection-molded assembly, the injection-molded assembly having multiple receiving grooves; plating a conductive coating on the upper surface of the injection-molded assembly and the groove walls of the receiving grooves, allowing the conductive coating to be electrically connected to the metal part; providing multiple signal terminals, assembling the signal terminals in the receiving grooves; providing at least one grounding component, soldering the grounding component to the upper surface of the metal part.

[0018] Furthermore, before injection molding the plastic part onto the metal part, the metal part is cut to form multiple first partition strips, multiple second partition strips, and connecting portions connecting adjacent first partition strips and second partition strips. The multiple first partition strips extend in the left-right direction, and the multiple second partition strips extend in the front-back direction. When injection molding the plastic part onto the metal part, a mold is provided to press against the upper surface of the metal part, and multiple mold cores are provided, each mold core abutting against the lower surface of a connecting portion.

[0019] Furthermore, after injection molding a plastic part into an injection-molded component on a metal part, a first nickel layer, a copper layer, a second nickel layer, and a tin layer are successively plated on the surface and the wall of the injection-molded component.

[0020] Furthermore, after injection molding plastic parts into injection molded components on metal parts, the width of the lower half of the molded receiving groove in the left-right direction is smaller than the width of the upper half of the receiving groove in the left-right direction. When the signal terminals are assembled in the receiving groove, an insulating part is first injection molded in each receiving groove, and then the signal terminals are assembled and fixed in the insulating part.

[0021] Furthermore, before injection molding the plastic part onto the metal part, the metal part is cut to form multiple first partition strips, multiple second partition strips, and multiple connecting parts. The multiple first partition strips extend in the left-right direction, and the multiple second partition strips extend in the front-back direction. When injection molding the plastic part onto the metal part, the plastic part covers the two opposite sides of the first partition strip and the two opposite sides of the second partition strip. The connecting parts connect adjacent first and second partition strips and are exposed on the upper surface of the plastic part. After a conductive plating layer is plated on the upper surface of the injection-molded assembly, the connecting parts are connected to the conductive plating layer. The grounding part is welded to the upper surface of the connecting parts.

[0022] Compared with the prior art, the electrical connector provided by the present invention has the following advantages: The shielding housing features metal components, allowing the grounding component to be directly soldered to them. A conductive plating layer coats the walls of the receiving groove and the upper surface of the injection-molded assembly, connecting to the metal components. This enables the conductive plating layer to electrically connect with both the metal components and the grounding component, forming a grounding loop and achieving complete shielding around the signal terminals. Furthermore, the direct soldering of the grounding component to the metal components eliminates the need for a fixed structure, simplifying manufacturing and avoiding the problem of the conductive plating being damaged during assembly by a fixed structure. Attached Figure Description

[0023] Figure 1 This is an exploded three-dimensional sectional view of the electrical connector according to the first embodiment of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the electrical connector according to the first embodiment of the present invention. Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 for Figure 1 Enlarged view of point B in the middle; Figure 5 for Figure 2 Enlarged view of point C in the middle; Figure 6 This is a partial cross-sectional view from a first perspective of the electrical connector according to the first embodiment of the present invention after some parts have been removed. Figure 7 This is a partial cross-sectional view from a second perspective of the electrical connector of the first embodiment of the present invention after some parts have been removed. Figure 8 This is a partial top view of the electrical connector according to the first embodiment of the present invention; Figure 9 This is a schematic diagram of the molding steps of the shielding shell according to the first embodiment of the present invention; Figure 10 This is a schematic diagram of the terminal module and the grounding component assembled on the shielding housing according to the first embodiment of the present invention; Figure 11 This is an exploded three-dimensional sectional view of the electrical connector according to the second embodiment of the present invention; Figure 12 This is a three-dimensional cross-sectional view of the electrical connector according to the second embodiment of the present invention. Figure 13 This is an exploded perspective sectional view of the electrical connector according to the third embodiment of the present invention; Figure 14 This is a three-dimensional cross-sectional view of the electrical connector according to the third embodiment of the present invention. Explanation of reference numerals in the accompanying drawings for the specific implementation methods: Detailed Implementation To facilitate a better understanding of the purpose, structure, features, and effects of this invention, the invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0024] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the position or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Unless otherwise expressly specified and limited, the terms "installed," "connected," "joined," "fixed," etc., should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral part. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0025] The electrical connector 100 of the present invention defines the left-right direction as the X-axis, the front-back direction as the Y-axis, and the up-down direction as the Z-axis.

[0026] like Figures 1 to 10 As shown, this is a first embodiment of the present invention, wherein the electrical connector 100 includes a shielding housing P, a plurality of terminal modules 3 and a plurality of grounding components 4. The shielding housing P includes an injection molding assembly 1 and a conductive plating layer 2. The injection molding assembly 1 includes a metal part 13 and a plastic part 12 injection molded on the metal part 13. In addition, the injection molding assembly 1 is also provided with a plurality of receiving slots 11.

[0027] like Figure 1 and Figure 3 As shown, the plastic part 12 includes multiple through slots 124, multiple first partitions 121, and multiple second partitions 122. In this embodiment, the receiving slot 11 is disposed on the plastic part 12 and penetrates the plastic part 12 in the vertical direction. The multiple receiving slots 11 are arranged side by side in the horizontal direction and in multiple rows in the front-back direction. The first partition 121 separates two adjacent receiving slots 11 in the horizontal direction, and the second partition 122 separates two adjacent receiving slots 11 in the front-back direction. A through slot 124 is provided at the connection of each first partition 121 and second partition 122. In addition, some of the multiple through slots 124 are located on the front and back sides of the receiving slot 11. The first partition 121 and the second partition 122 are both recessed into the upper surface of the plastic part 12 with grooves 123, and the grooves 123 are connected to the multiple through slots 124. In other embodiments, the through groove 124 may be provided only at the connection between the first partition 121 and the second partition 122, or the through groove 124 may not be provided at the connection between the first partition 121 and the second partition 122, but may be provided all around the plastic part 12.

[0028] like Figure 6 , Figure 7 and Figure 8 As shown, both the through groove 124 and the receiving groove 11 extend through the plastic part 12 in the vertical direction. The width of the lower half of the receiving groove 11 in the horizontal direction is smaller than the width of the upper half of the receiving groove 11 in the horizontal direction. The width of the lower half of the through groove 124 in the left and right direction is greater than the width of the upper half of the through groove 124 in the left and right direction. Specifically, the receiving groove 11 extends in the vertical direction. The upper half of the receiving groove 11 is trumpet-shaped. The lower half of the receiving groove 11 has a step. In the left and right direction, the width of any horizontal section of the lower half of the receiving groove 11 is smaller than the width of any horizontal section of the upper half. This structure can prevent the terminal module 3 from falling out from below. The through groove 124 also extends in the vertical direction. From top to bottom, the width of the through groove 124 in the left and right direction gradually increases.

[0029] like Figure 2 , Figure 4 and Figure 5 As shown, the metal part 13 includes a plurality of first dividing strips 131 extending in the left-right direction, a plurality of second dividing strips 132 extending in the front-back direction, and a plurality of connecting portions 133. The first dividing strips 131 and second dividing strips 132 are fixed to the groove 123. The two opposite sides of the first dividing strips 131 are covered by the plastic part 12, and the two opposite sides of the second dividing strips 132 are also covered by the plastic part 12. The connecting portions 133 connect adjacent first dividing strips 131 and second dividing strips 132. The upper surface of the connecting portion 133 is exposed above the upper surface of the plastic part 12. In this embodiment, the upper surface of the connecting portion 133 is flush with the upper surface of the plastic part 12. In other embodiments, the upper surface of the connecting portion 133 may protrude upwards from the upper surface of the plastic part 12. The connecting portion 133 is located above the through groove 124 and blocks the through groove 124 in the vertical direction. A fixing rib 1331 extends from the side of the connecting portion 133 and is completely embedded in the plastic part 12. In other embodiments, the injection molding assembly 1 may include a plurality of metal parts 13, each metal part 13 may have at least one connecting portion 133, the connecting portion 133 may be exposed on the upper surface of the plastic part 12 or exposed in the receiving groove 11, and the connecting portion 133 is connected to the conductive plating layer 2.

[0030] like Figure 3 , Figure 4 and Figure 5As shown, the conductive plating layer 2 is integrally plated on the wall of the receiving tank 11 and the upper surface of the injection molding component 1. The wall of the receiving tank 11 is part of the plastic part 12. The upper surface of the injection molding component 1 is composed of the first partition strip 131, the second partition strip 132, the connecting part 133 and the upper surface of the plastic part 12. The integrally connected conductive plating layer 2 connects multiple first partition strips 131, multiple second partition strips 132 and connecting parts 133. Specifically, the first partition strips 131, the second partition strips 132 and the connecting parts 133 are all connected to the conductive plating layer 2 plated on the upper surface of the plastic part 12. In other embodiments, the conductive plating layer 2 may not be plated on the upper surface of the injection molding component 1. The two opposing sides of the first partition strip 131 may be partially exposed in the receiving groove 11, and the two opposing sides of the second partition strip 132 may also be partially exposed in the receiving groove 11. The portions of the first partition strip 131 and the second partition strip 132 exposed in the receiving groove 11 may be connected to the conductive plating layer 2 plated on the wall of the receiving groove 11.

[0031] like Figure 6 As shown, when the injection-molded component 1 is electroplated, the upper surface of the connecting part 133 is also plated with a conductive plating layer 2. However, when the grounding component 4 is welded to the upper surface of the connecting part 133, the conductive plating layer 2 on the upper surface of the connecting part 133 is usually destroyed, and thus it is directly welded to the upper surface of the connecting part 133. In the special case where the conductive plating layer 2 on the upper surface of the connecting part 133 is not completely destroyed when the grounding component 4 is welded, it should also be understood as the grounding component 4 being welded to the upper surface of the connecting part 133.

[0032] Of course, in addition to coating the above-mentioned areas, the conductive coating 2 also coats the remaining exposed surfaces of the plastic part 12 and the remaining exposed surfaces of the metal part 13. In other words, the entire part of the injection molding assembly 1 exposed to the air is coated with an integrally connected conductive coating 2. In other embodiments, the conductive coating 2 may only coat the upper surface of the injection molding assembly 1 and the wall of the receiving groove 11. The conductive coating 2 coated on the wall of the receiving groove 11 and the conductive coating 2 coated on the upper surface of the injection molding assembly 1 may be integrally connected or indirectly connected, as long as the two conductive coatings 2 can be electrically connected.

[0033] The conductive plating layer 2 includes a first nickel layer in contact with the surface of the plastic part 12, a copper layer located outside the first nickel layer, a second nickel layer located outside the copper layer, and a tin layer located outside the second nickel layer. The thickness of the conductive plating layer 2 is greater than or equal to 5.5 μm and less than or equal to 7.5 μm, wherein the first nickel layer is approximately 1 to 1.5 μm thick, the copper layer is approximately 2 to 4 μm thick, the second nickel layer is approximately 2 μm thick, and the tin layer is approximately 0.5 μm thick. In other embodiments, the conductive plating layer 2 may consist only of a first nickel layer, a copper layer, and a second nickel layer.

[0034] Each terminal module 3 is housed in a corresponding receiving groove 11. Each terminal module 3 includes an insulating member 31 and a signal terminal 32 fixed to the insulating member 31. In this embodiment, the insulating member 31 is injection molded in the receiving groove 11, and the signal terminal 32 is assembled on the insulating member 31. In other embodiments, the insulating member 31 can be assembled into the receiving groove 11, and then the signal terminal 32 can be assembled on the insulating member 31, or the insulating member 31 can be injection molded into the signal terminal 32 to form a terminal module 3, and the terminal module 3 can be assembled into the receiving groove 11.

[0035] like Figure 1 and Figure 6 As shown, each grounding element 4 includes a grounding body 41 and a grounding spring arm 42. The grounding body 41 is welded to the upper surface of the connecting portion 133 by laser welding, and the grounding body 41 of each grounding element 4 is welded to only one upper surface of the connecting portion 133. The grounding spring arm 42 is connected to the grounding body 41 and abuts upward against the circuit board. In other embodiments, there may be only one grounding element 4. The grounding body 41 may be welded to the upper surface of the connecting portion 133 by soldering, and the grounding spring arm 42 may abut upward against the grounding structure of another electrical connector 100 or against a chip.

[0036] like Figure 9 and Figure 10 The following is a method for manufacturing the electrical connector 100 in this embodiment: Step 1: Provide a metal part 13, and form a plastic part 12 on the metal part 13 by injection molding process. The metal part 13 and the plastic part 12 form an injection molding assembly 1. The injection molding assembly 1 is formed with multiple receiving grooves 11. The width of the lower half of the formed receiving groove 11 in the left-right direction is smaller than the width of the upper half of the receiving groove 11 in the left-right direction. Step 2: A conductive plating layer 2 is plated on the upper surface of the injection molding component 1 and the wall of the receiving groove 11, so that the conductive plating layer 2 is electrically connected to the metal part 13. Step 3: In each receiving slot 11, an insulating component 31 is injection molded twice to provide multiple signal terminals 32, and the signal terminals 32 are assembled in the insulating component 31; Step 4: Provide at least one grounding element 4 and weld the grounding element 4 to the upper surface of the metal part 13.

[0037] It should be noted that before injection molding the plastic part 12 onto the metal part 13, the metal part 13 is cut to form multiple first dividing strips 131, multiple second dividing strips 132, and connecting portions 133 connecting adjacent first dividing strips 131 and second dividing strips 132. One end of the metal part 13 is connected to a material strip. In step 1, when injection molding the plastic part 12, the metal part 13 is first placed in a fixed position by the material strip, and a mold and multiple mold cores are provided. One mold presses down on the upper surface of the metal part 13, and multiple mold cores extend into the through grooves 124 to abut against the lower surface of the connecting portions 133. After the mold cores are demolded, multiple through grooves 124 are formed on the plastic part 12. In other embodiments, the metal part 13 can also be other shapes, or it can be formed by die casting, metal injection molding, or other methods.

[0038] In step 2, when electroplating the injection molded component 1, the surface of the injection molded component 1 is treated with a chemical solution. Then, the entire injection molded component 1 is placed in the electroplating solution for electroplating. In actual production, a first nickel layer, a copper layer, a second nickel layer, and a tin layer are successively plated on all surfaces of the injection molded component 1 exposed to air. Of course, in other embodiments, only the upper surface of the injection molded component 1 and the walls of the receiving tank 11 can be electroplated. The conductive plating layer 2 plated on the walls of the receiving tank 11 and the conductive plating layer 2 plated on the upper surface of the injection molded component 1 can be integrally connected or indirectly connected, as long as the two conductive plating layers 2 can be electrically connected.

[0039] In step 3, during the secondary injection molding of the insulating part 31 in the receiving groove 11, a connector 5 is also formed below the injection molding assembly 1. The connector 5 connects multiple insulating parts 31, thereby enabling the simultaneous molding of multiple insulating parts 31. During the molding process of the connector 5 and the insulating parts 31, the connector 5 partially blocks the through groove 124 below. In other embodiments, the connector 5 may not be provided, and each insulating part 31 may be molded individually, or multiple insulating parts 31 may be molded simultaneously in other ways. In other embodiments, step 3 may be replaced by first molding multiple insulating parts 31 individually, then assembling the multiple insulating parts 31 into multiple receiving grooves 11 respectively, and then assembling the signal terminals 32 onto the insulating parts 31; step 3 may also be replaced by first injection molding multiple insulating parts 31 onto multiple signal terminals 32 to form multiple terminal modules 3, and then assembling the multiple terminal modules 3 into multiple receiving grooves 11 respectively.

[0040] like Figure 11 and Figure 12As shown, this is the second embodiment of the present invention. The difference from the first embodiment is that the injection molding assembly 1 includes multiple metal parts 13 arranged side-by-side in the left-right direction. Each metal part 13 is located between two adjacent rows of receiving slots 11 in the left-right direction. Each metal part 13 includes a main body 134, a connecting part 133, and a bent part 135 connecting the main body 134 and the connecting part 133. The metal parts 13 are made of sheet metal. The surface of the main body 134 is perpendicular to the left-right direction, and the upper surface of the connecting part 133 is a sheet surface. The main body 134 can assist the conductive plating layer 2 in shielding the signal terminal 32. The flatness of the sheet metal surface of the metal part 13 is necessarily greater than its cut surface. By bending the connecting part 135, the upper surface of the connecting part 133 becomes a sheet surface, thereby allowing the grounding component 4 to be welded to the sheet surface of the metal part 13, preventing the grounding component 4 from tilting due to the flatness of the connecting part 133.

[0041] Each main body 134 is located on a plurality of first partitions 121 connected in pairs along the front-back direction, used to separate the plurality of receiving slots 11 in two adjacent rows on the left and right. A part of the bent part 135 is located on the second partition 122. The connection between the bent part 135 and the main body 134 is located at the connection between the first partition 121 and the second partition 122. The connection between the bent part 135 and the connecting part 133 is located at the connection between the first partition 121 and the second partition 122. Compared with the bent part 135 being entirely located in the first partition 121, the bent part 135 of this technical solution can reduce the thickness occupied by the first partition 121. The thickness of the first partition 121 does not need to be increased to meet the needs of the bent part 135, which can ensure that the overall size of the plastic part 12 meets the requirements.

[0042] like Figure 13 and Figure 14 As shown, this is the third embodiment of the present invention. The difference from the first embodiment is that the metal part 13 further includes multiple through holes 136, and the plastic part 12 includes multiple through slots 125. One through hole 136 communicates downward with a corresponding through slot 125, and the two together form a receiving groove 11. A first dividing strip 131 separates two adjacent through holes 136 in the front-back direction, and a second dividing strip 132 separates two adjacent through holes 136 in the left-right direction. The conductive plating layer 2 extends from the groove wall of the receiving groove 11 to the upper surface of the first dividing strip 131 and the second dividing strip 132. The conductive plating layer 2 plated on the groove walls of the multiple receiving grooves 11 is integrally connected.

[0043] In this embodiment, the two opposite sides of the first partition strip 131 are not covered by the plastic part 12, but are exposed in the receiving groove 11. Similarly, the two opposite sides of the second partition strip 132 are also not covered by the plastic part 12, but are also exposed in the receiving groove 11. Specifically, the sides of the first partition strip 131 and the sides of the second partition strip 132 can be flush with the groove wall of the receiving groove 11 or extend beyond the groove wall of the receiving groove 11. All the groove walls of the receiving groove 11 are plated with a conductive plating layer 2, and at this position, the conductive plating layer 2 is connected to the metal part 13. Specifically, the conductive plating layer 2 plated on the groove wall of the receiving groove 11 connects the exposed portions of the first partition strip 131 and the exposed portions of the second partition strip 132. In this embodiment, some of the multiple first partition strips 131 are provided with fixing holes 1311. In other embodiments, only one of the multiple first partition strips 131 is provided with a fixing hole 1311. The plastic part 12 includes a plastic body 126 and a protrusion 127. The connecting part 133 is located above the plastic body 126. The protrusion 127 is fixed to the fixing hole 1311, so that after the plastic part 12 is injection molded on the metal part 13, the plastic part 12 will not easily separate from the metal part 13.

[0044] The upper surface of the electrical connector 100 is provided with only one grounding element 4, and the grounding body 41 of this grounding element 4 can be soldered to the upper surface of multiple connecting parts 133. In other embodiments, the electrical connector 100 may still have multiple grounding elements 4, and the grounding body 41 of each grounding element 4 can also be soldered to the upper surface of multiple connecting parts 133.

[0045] In summary, the electrical connector 100 provided by the present invention has the following beneficial effects: 1. A metal component 13 is provided on the shielding housing P, allowing the grounding component 4 to be directly soldered to the metal component 13. The conductive plating layer 2 is plated on the wall of the receiving groove 11 and the upper surface of the injection molding assembly 1 and connected to the metal component 13. This allows the conductive plating layer 2 to be electrically connected to the metal component 13 and the grounding component 4, forming a grounding loop and achieving full shielding around the signal terminal 32. In addition, the grounding component 4 is directly soldered to the metal component 13, meaning that the grounding component 4 does not require a fixed structure, simplifying its manufacturing and avoiding the problem of the conductive plating layer 2 being damaged during assembly due to the fixed structure of the grounding component 4.

[0046] 2. When injection molding the plastic part 12 onto the metal part 13, a mold core is installed in the through groove 124 to fix the metal part 13 and prevent the position of the metal part 13 from shifting. The width of the lower half of the through groove 124 in the left-right direction is greater than the width of the upper half of the through groove 124 in the left-right direction, so that the mold core can easily detach from the through groove 124 after the plastic part 12 is injection molded. At the same time, the connecting part 133 is located above the through groove 124. When the grounding part 4 is laser welded to the upper surface of the connecting part 133, even if the laser penetrates the connecting part 133, it will not cause significant damage to the plastic part 12.

[0047] In addition, the width of the lower half of the receiving groove 11 in the left-right direction is smaller than the width of the upper half of the receiving groove 11 in the left-right direction. This ensures that the distance between the through groove 124 and the receiving groove 11 is not too narrow. As a result, the thickness of the plastic part 12 located between the through groove 124 and the receiving groove 11 will not be too small, which facilitates the injection molding of the plastic part 12.

[0048] 3. The plastic part 12 covers the two opposite sides of the first dividing strip 131 and the two opposite sides of the second dividing strip 132, which can prevent the metal part 13 from shifting in the left-right and front-back directions. The fixing rib 1331 is completely embedded in the plastic part 12, which can fix the metal part 13 on the plastic part 12 in the up-down direction, preventing the metal part 13 from detaching from the plastic part 12 upwards.

[0049] The above detailed description is only an illustration of a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. 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 in that, include: The shielding housing includes an injection-molded assembly and a conductive plating layer. The injection-molded assembly includes a metal part and a plastic part injection-molded on the metal part. The injection-molded assembly includes multiple receiving grooves. The conductive plating layer is plated on the groove walls of the receiving grooves and the upper surface of the injection-molded assembly. The metal part includes a connecting portion, which is exposed on the upper surface of the plastic part and connected to the conductive plating layer plated on the upper surface of the injection-molded assembly. Multiple terminal modules are housed in corresponding receiving slots, and each terminal module includes an insulating component and a signal terminal fixed to the insulating component; The grounding component is welded to the upper surface of the connection part.

2. The electrical connector as claimed in claim 1, characterized in that, The plastic part has a recessed groove from the top surface downwards, and the metal part is fixed in the groove. The plastic part includes multiple first partitions and multiple second partitions. Multiple receiving slots are arranged side by side in the left-right direction and in multiple rows in the front-back direction. The first partition separates two adjacent receiving slots in the left-right direction, and the second partition separates two adjacent receiving slots in the front-back direction. A through groove is provided at the connection between the first partition and the second partition. The through groove runs through the plastic part in the up-down direction. The connecting part is located above the through groove and blocks the through groove. The grounding part is welded to the upper surface of the connecting part by laser welding.

3. The electrical connector as described in claim 1, characterized in that, Multiple receiving slots are arranged side by side in the left-right direction. The injection molding assembly includes multiple metal parts, which are arranged side by side in the left-right direction. Each metal part is located between two adjacent receiving slots in the left-right direction. Each metal part includes a main body, a connecting part, and a bent part connecting the main body and the connecting part. The metal parts are made of sheet metal. The plate surface of the main body is perpendicular to the left-right direction, and the upper surface of the connecting part is a plate surface.

4. The electrical connector as claimed in claim 1, characterized in that, The metal part includes a plurality of first partition strips extending in the left-right direction, a plurality of second partition strips extending in the front-back direction, and a connecting part. The plastic part covers the two front-back opposite sides of the first partition strips and the two left-right opposite sides of the second partition strips. The connecting part connects adjacent first partition strips and second partition strips. The side of the connecting part has a fixing rib extending from it, and the fixing rib is completely embedded in the plastic part.

5. The electrical connector as claimed in claim 1, characterized in that, The plastic part includes multiple through slots running vertically through the center. A metal part is located above the through slots and blocks them. The width of the lower half of the through slot in the left-right direction is greater than the width of the upper half of the through slot in the left-right direction.

6. The electrical connector as claimed in claim 5, characterized in that, The plastic part includes multiple first partitions and multiple second partitions. Multiple receiving slots are arranged side by side in the left-right direction and in multiple rows in the front-back direction. The first partition separates two adjacent receiving slots in the left-right direction, and the second partition separates two adjacent receiving slots in the front-back direction. A through slot is provided at the connection between each first partition and the second partition. The width of the lower half of the receiving slot in the left-right direction is smaller than the width of the upper half of the receiving slot in the left-right direction.

7. The electrical connector as claimed in claim 1, characterized in that, The metal part includes a plurality of first partition bars extending in the left-right direction and a plurality of second partition bars extending in the front-back direction. A connecting portion connects adjacent first partition bars and second partition bars. A portion of the first partition bar is exposed in the receiving groove, a portion of the second partition bar is exposed in the receiving groove, and a conductive plating layer plated on the wall of the receiving groove connects the portions of the first partition bars and the portions of the second partition bars exposed in the receiving groove.

8. The electrical connector as claimed in claim 1, characterized in that, The conductive plating layer includes a first nickel layer in contact with the surface of the plastic part, a copper layer located outside the first nickel layer, and a second nickel layer located outside the copper layer. The thickness of the conductive plating layer is greater than or equal to 5.5 μm and less than or equal to 7.5 μm.

9. An electrical connector, characterized in that, include: The shielding shell includes a metal part, a plastic part, and a conductive plating layer. The plastic part is injection molded onto the metal part. The metal part includes multiple perforations, and the plastic part includes multiple slots. One perforation is connected downward to a corresponding slot, and the two together form a receiving slot. The walls of the multiple receiving slots are all plated with a conductive plating layer, and the conductive plating layer is connected to the metal part. Multiple terminal modules are housed in corresponding receiving slots, and each terminal module includes an insulating component and a signal terminal fixed to the insulating component; Grounding component, welded to the upper surface of the metal component.

10. The electrical connector as claimed in claim 9, characterized in that, The metal part includes a plurality of first partition strips extending in the left-right direction and a plurality of second partition strips extending in the front-back direction. The first partition strips separate two adjacent perforations in the front-back direction, and the second partition strips separate two adjacent perforations in the left-right direction. The conductive plating extends from the tank wall of the receiving tank to the upper surface of the first and second partition strips, and the conductive plating on the tank walls of the plurality of receiving tanks is integrally connected.

11. The electrical connector as claimed in claim 9, characterized in that, The metal part includes a plurality of first partition strips extending in the left-right direction, a plurality of second partition strips extending in the front-back direction, and a connecting portion connecting adjacent first partition strips and second partition strips. The plastic part includes a plastic body and a protrusion. The connecting portion is located above the plastic body. A grounding component is welded to the upper surface of the connecting component. At least one first partition strip is provided with a fixing hole, and the protrusion is fixed to the fixing hole.

12. A method for manufacturing an electrical connector, characterized in that, Includes the following steps: A metal part is provided, and a plastic part is formed on the metal part by injection molding. The metal part and the plastic part constitute an injection molded assembly, and the injection molded assembly has multiple receiving grooves. A conductive coating is plated on the upper surface of the injection-molded component and the wall of the receiving groove, so that the conductive coating is electrically connected to the metal part. It provides multiple signal terminals, which are assembled in the receiving slot; Provide at least one grounding element, which is welded to the upper surface of the metal part.

13. The method for manufacturing an electrical connector as described in claim 12, characterized in that, Before injection molding a plastic part onto a metal part, the metal part is cut to form multiple first partition strips, multiple second partition strips, and connecting portions that connect adjacent first and second partition strips. The multiple first partition strips extend in the left-right direction, and the multiple second partition strips extend in the front-back direction. When injection molding a plastic part onto the metal part, a mold is provided to press against the upper surface of the metal part, and multiple mold cores are provided, each mold core abutting against the lower surface of a connecting portion.

14. The method for manufacturing an electrical connector as described in claim 12, characterized in that, After injection molding a plastic part into an injection-molded component on a metal part, a first nickel layer, a copper layer, a second nickel layer, and a tin layer are successively plated on the surface and the wall of the injection-molded component.

15. The method for manufacturing an electrical connector as described in claim 12, characterized in that, After injection molding plastic parts into injection molded components on metal parts, the width of the lower half of the molded receiving groove in the left-right direction is smaller than the width of the upper half of the receiving groove in the left-right direction. When the signal terminals are assembled in the receiving groove, an insulating part is first injection molded in each receiving groove, and then the signal terminals are assembled and fixed in the insulating part.

16. The method for manufacturing an electrical connector as described in claim 12, characterized in that, Before injection molding a plastic part onto a metal part, the metal part is cut to form multiple first partition strips, multiple second partition strips, and multiple connecting parts. The multiple first partition strips extend in the left-right direction, and the multiple second partition strips extend in the front-back direction. When injection molding the plastic part onto the metal part, the plastic part covers the two opposite sides of the first partition strip and the two opposite sides of the second partition strip. The connecting parts connect adjacent first and second partition strips and are exposed on the upper surface of the plastic part. After a conductive plating layer is plated on the upper surface of the injection-molded assembly, the connecting parts are connected to the conductive plating layer. A grounding component is welded to the upper surface of the connecting parts.

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