Electric connector and manufacturing method thereof

Abstract

The invention discloses an electric connector and a manufacturing method thereof, and the manufacturing method comprises the steps: 1, providing a plurality of material belts and a plurality of metal plates, enabling each material belt to be provided with a positioning hole, enabling the positioning holes corresponding to the plurality of material belts to be aligned vertically, enabling the plurality of metal plates to be stacked in the vertical direction, and enabling the plurality of metal plates to be fixed together to form a metal housing, wherein the plurality of material belts comprise one first material belt and at least one second material belt, one first material belt is connected with one row of metal plates, and one second material belt is connected with one metal plate; step 2, removing the second material belt and reserving the first material belt; and 3, performing injection molding on a metal shell to form an insulating shell, and arranging the signal terminal in the metal shell. According to the invention, the metal plates are accurately aligned during stacking through the material belt, and the electric connector is suitable for large-scale mass production.

Description

Technical Field

[0001] This invention relates to an electrical connector and a method for manufacturing the same, and more particularly to an electrical connector and a method for manufacturing the same, which is formed by stacking metal plates to create a metal housing. Background Technology

[0002] Chinese invention patent CN200510063789.6 designs a metal housing for an electrical connector. This metal housing is composed of multiple metal layers, each layer defining multiple holes. The layers must be precisely aligned during stacking, and adjacent layers are fixed by applying a metal bonding agent to the surface of the layers. This type of stacked structure significantly improves the flatness, coplanarity, and dimensional accuracy of the metal housing, while meeting the stringent requirements for minimum wall thickness and electromagnetic shielding performance in high-frequency miniaturized connectors.

[0003] In the manufacturing process of metal stacks, metal stacks are formed by stamping metal sheets. To achieve high dimensional accuracy, the metal sheets are usually made of relatively thin material. However, reducing the thickness of the sheet material leads to a reduction in the thickness of each layer, which significantly increases the number of stacks required for the metal housing. This makes the manufacturing process of the metal housing more complicated, and the precise alignment between multiple metal stacks is also more difficult, which is not conducive to the large-scale mass production of electrical connectors.

[0004] Therefore, it is necessary to design a new electrical connector structure and manufacturing method to overcome the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an electrical connector and its manufacturing method, which uses strips to precisely align metal plates during stacking and makes the electrical connector suitable for mass production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A method for manufacturing an electrical connector, characterized by comprising the following steps: Step 1: Provide multiple strips and multiple metal plates. Each strip has positioning holes. Align the corresponding positioning holes of the multiple strips vertically, stack the multiple metal plates vertically, and fix the multiple metal plates together to form a metal housing. The multiple strips include a first strip and at least one second strip. The first strip connects a row of metal plates, and the second strip connects a metal plate. Step 2: Remove the second strip and keep the first strip. Step 3: Inject and mold an insulating shell on a metal housing, and place the signal terminals in the metal housing.

[0007] Furthermore, in step 1, along the connection direction between the first strip and the metal plate, the width of the first strip is smaller than the width of the second strip.

[0008] Furthermore, after step 2 and before step 3, the first strip is moved, and multiple metal plates are repeatedly stacked to form a metal shell, so that a first strip connects a row of metal shells.

[0009] Furthermore, the main material of the metal plate is copper. In step 1, multiple metal plates are fixed together by diffusion welding. Specifically, a pressure of 7000N to 9000N is applied to one side of the stacked metal plates, and the temperature is heated to 600 degrees Celsius to 800 degrees Celsius for 15 to 25 seconds.

[0010] Furthermore, step 4 is also included. Step 4, after step 3, provides a row of grounding elements and a third strip connecting the row of grounding elements. Each grounding element includes a fixing part and a spring arm extending from the fixing part. The third strip is operated to weld the fixing part of the row of grounding elements to the upper surface of the metal housing.

[0011] A method for manufacturing an electrical connector, characterized by comprising the following steps: Step 1: providing multiple strips and multiple metal plates, each metal plate having a perforation, the multiple strips including a first strip and at least one second strip, the first strip connecting a row of metal plates, and the second strip connecting a metal plate; Step 2: removing the second strips while retaining the first strips, aligning the corresponding perforations of the multiple metal plates vertically, stacking the multiple metal plates vertically, and fixing the multiple metal plates together to form a metal housing; Step 3: injection molding an insulating shell onto a metal housing, and placing signal terminals within the metal housing.

[0012] Furthermore, in step 2, after stacking and aligning multiple metal plates in the vertical direction, the sides of the multiple metal plates are welded together by laser welding, and then the multiple metal plates are fixed together by diffusion welding, so that there is no gap between two adjacent metal plates at the inner wall of the perforation. The multiple perforations are stacked vertically to form a receiving groove, which is used to receive signal terminals.

[0013] Furthermore, in step 1, a metal plate has a connecting part on only one side, which is used to connect the strip. The two connecting parts of two adjacent metal plates are located on opposite sides of the metal shell. In step 2, multiple metal plates are first stacked to form a metal shell, and then the second strip is removed.

[0014] An electrical connector, characterized in that it comprises: an insulating shell having a first side surface; a metal housing, the insulating shell being injection molded onto the metal housing, the metal housing comprising a plurality of stacked metal plates and a receiving groove penetrating the plurality of metal plates vertically, the metal plates having outwardly protruding connecting portions, and only one connecting portion of the metal plate being exposed on the first side surface, the two connecting portions of two adjacent metal plates at least partially overlapping when viewed from above; and a signal terminal received in the receiving groove.

[0015] Furthermore, the metal housing includes a fixing groove that extends through the edges of multiple metal plates in a vertical direction. A portion of the insulating housing is fixed to the fixing groove. The fixing groove is arranged side by side with multiple receiving grooves and has the same shape as a portion of the receiving groove. The distance between the fixing groove and an adjacent receiving groove is equal to the distance between two adjacent receiving grooves in the same row.

[0016] Furthermore, the insulating shell includes a second side adjacent to the first side, the connecting part is exposed on the first side, and the metal shell has a positioning part protruding outward between two adjacent fixing grooves. The positioning part is positioned on the insulating shell and is exposed on the second side.

[0017] Furthermore, each metal plate has a notch recessed at its edge, and a portion of the insulating shell is fixed to the notch. Each metal plate has a partition between two adjacent notches. Multiple partitions stacked in the vertical direction form a rib. Among the multiple partitions corresponding to a rib, the width of the partition of the metal plate excluding the topmost metal plate is greater than the width of the partitions of the other metal plates in the direction perpendicular to the vertical direction and the notch recess direction.

[0018] Furthermore, the insulating housing includes multiple insulating components, which are injection molded into receiving grooves. Signal terminals are fixed to the insulating components. Along the direction perpendicular to the vertical direction and the notch recess direction, there is a partition between two adjacent receiving grooves. The partition has a widened portion, the width of which is greater than the width of other parts of the partition. The widened portion is located on the lowest metal plate and connected to the partition. The width of the widened portion is the same as the width of the partition.

[0019] Furthermore, there are no gaps between two adjacent metal plates on the walls of the receiving tank.

[0020] An electrical connector, characterized in that it comprises: an insulating shell; a metal housing, the insulating shell being injection molded into the metal housing, the metal housing including a plurality of stacked metal plates and a receiving groove penetrating the plurality of metal plates vertically, wherein there is no gap between two adjacent metal plates at the groove wall, each metal plate having a connecting part protruding outward and only one side of each metal plate having a connecting part, the connecting part being used to connect a strip, the two corresponding connecting parts of two adjacent metal plates being located on opposite sides of the metal housing, and at least a portion of the connecting part being exposed in the metal housing; and a signal terminal received in the receiving groove.

[0021] Compared with the prior art, the electrical connector provided by the present invention has the following advantages: By aligning multiple strips vertically, multiple metal plates are precisely positioned, resulting in a high-precision metal shell formed by stacking these plates. The first strip connects a row of metal plates, allowing for repeated stacking steps to quickly form a row of metal shells, facilitating large-scale production of electrical connectors. Removing the second strip before injection molding the insulating shell prevents cumulative tolerances in the stacked positioning holes from causing inaccurate positioning when moving the first strip during injection molding of multiple insulating shells. It also avoids the impact of removing the second strip after injection molding on the insulating shell. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the electrical connector according to the first embodiment of the present invention; Figure 2 This is a schematic diagram of the metal casing according to the first embodiment of the present invention; Figure 3 This is a schematic diagram of the bottommost metal plate of the metal casing according to the first embodiment of the present invention; Figure 4 for Figure 2 A sectional view; Figure 5 This is a schematic diagram of steps 1 to 3 of the first embodiment of the present invention; Figure 6 This is a schematic diagram of step 4 in the first embodiment of the present invention; Figure 7 This is a schematic diagram of the electrical connector according to the second embodiment of the present invention; Figure 8 This is a schematic diagram of the metal casing according to the second embodiment of the present invention. Figure 9 This is a schematic diagram of steps 1 to 3 of the second embodiment of the present invention.

[0023] Explanation of reference numerals in the accompanying drawings for the specific implementation methods: Electrical connector 100 Insulating shell 1 First side view 11 Groove 111 Second side 12 Insulating component 13 Metal casing 2 Containment Slot 21 22 partitions Widened section 221 Fixed slot 23 24 ribs Positioning unit 25 Metal plate 26 261 piercing Gap 262 Continuous Material Section 263 First Material Supply Section 2631 Second feed section 2632 Partition 264 Material strip 3 First strip 31 Second strip 32 Positioning hole 33 Signal terminal 4 Grounding component 5 Fixing part 51 Spread Arm 52 Third strip 53 Detailed Implementation

[0024] 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.

[0025] The electrical connector 100 of this invention defines the left-right direction as the X-axis, the leftward direction as the positive X-axis direction, the front-back direction as the Y-axis, the forward direction as the positive Y-axis direction, the up-down direction as the Z-axis, and the upward direction as the positive Z-axis direction. like Figures 1 to 6 As shown, this is the first embodiment of the present invention, wherein the electrical connector 100 includes an insulating shell 1, a metal shell 2, and a signal terminal 4.

[0026] like Figure 1 and Figure 4 As shown, the insulating shell 1 includes two front-to-back opposing first sides 11 and two left-to-right opposing second sides 12. The first sides 11 and the second sides 12 are adjacent to each other. The insulating shell 1 is injection molded onto the metal shell 2 and includes a plurality of insulating members 13 for fixing the signal terminals 4. The signal terminals 4 are assembled onto the insulating members 13. In other embodiments, the insulating members 13 may be injection molded onto the signal terminals 4, that is, the signal terminals 4 are encapsulated within the insulating members 13 as inserts during injection molding. Alternatively, the signal terminals 4 may be fixed in an insulating member 13 that is separate from the insulating shell 1. This fixing step of the signal terminals 4 can be performed before or after the insulating shell 1 is injection molded.

[0027] like Figure 2 , Figure 3 and Figure 4 As shown, the metal housing 2 includes multiple metal plates 26 stacked vertically and a receiving groove 21 that runs through the multiple metal plates 26 vertically. The multiple metal plates 26 are fixed together by means of thermal diffusion welding or ultrasonic welding. The insulating part 13 is injection molded in the receiving groove 21. The signal terminal 4 is received in the receiving groove 21. There is no gap between two adjacent metal plates 26 at the groove wall of the receiving groove 21.

[0028] Each metal plate 26 includes multiple through holes 261, notches 262, and connecting portions 263. The through holes 261 of the multiple metal plates 26 are stacked vertically to form a receiving groove 21. The notches 262 are recessed from the left and right edges of the metal plates 26. The notches 262 of the multiple metal plates 26 are stacked vertically to form a fixing groove 23. The connecting portions 263 protrude outward from the front and rear sides of the metal plates 26 and are used to connect with a strip 3. In other embodiments, the through holes 261 may not accommodate signal terminals 4, but are only used for a fixture to pass through to align the multiple metal plates 26 vertically.

[0029] The fixing groove 23 extends through the edges of multiple metal plates 26 in the vertical direction. A part of the insulating shell 1 is fixed to the fixing groove 23. The fixing groove 23 and multiple receiving grooves 21 are arranged side by side, and the shape is consistent with the shape of a part of the receiving groove 21. The distance between the fixing groove 23 and the adjacent receiving groove 21 is equal to the distance between two adjacent receiving grooves 21 in the same row.

[0030] A partition 264 is provided between two adjacent notches 262. The partitions 264 of multiple metal plates 26 are stacked to form a partition rib 24. It can be seen that the partition rib 24 is located between two adjacent fixing slots 23, separating the two fixing slots 23. There is a partition 22 between two adjacent receiving slots 21. Each partition 22 is connected to the corresponding partition rib 24 in the left-right direction. A positioning part 25 protrudes outward from part of the partition rib 24 of the metal shell 2. After the insulating shell 1 is injection molded on the metal shell 2, a part of the insulating shell 1 is fixed in the fixing slot 23. At the same time, the positioning part 25 is positioned on the insulating shell 1 and exposed on the second side 12. In this embodiment, the positioning part 25 is formed by the protrusion of a partition 264. In other embodiments, the positioning part 25 may also be formed by the protrusion and stacking of multiple partitions 264.

[0031] It is worth noting that the structure of the bottommost metal plate 26 among the multiple metal plates 26 differs from the others. Along the front-to-back direction, the width of the partition 264 of the bottommost metal plate 26 is greater than the width of the partitions 264 of the other metal plates 26. The partition 22 has a widening portion 221 disposed on the bottommost metal plate 26. The width of the widening portion 221 is greater than the width of the other parts of the partition 22. The widening portion 221 is connected to the partition 264, and its width along the front-to-back direction is the same as the width of the partition 264. Because of the structure of the bottommost metal plate 26, the insulating outer shell 1 is less likely to fall downwards after being injection molded onto the metal shell 2. In other embodiments, the widening portion 221 may not be located on the bottommost metal plate 26; it may be located on any metal plate 26 other than the topmost one.

[0032] The multiple connecting parts 263 on the metal shell 2 include a first connecting part 2631 and a second connecting part 2632. The first connecting part 2631 is used to connect a first material strip 31, and the second connecting part 2632 is used to connect a second material strip 32. The first connecting part 2631 is disposed on the bottommost metal plate 26. After the insulating shell 1 is injection molded on the metal shell 2, the second connecting part 2632 is covered by the insulating shell 1. Only the first connecting part 2631 is exposed on the first side 11 of the insulating shell 1. In the vertical direction, the first connecting part 2631 partially overlaps with the adjacent second connecting part 2632.

[0033] like Figure 5 and Figure 6As shown, this is a method for manufacturing the electrical connector 100 in the first embodiment, and the steps are as follows: Step 1: Provide multiple strips 3 and multiple metal plates 26. Each strip 3 is provided with positioning holes 33. Align the positioning holes 33 of the multiple strips 3 vertically, stack the multiple metal plates 26 in the vertical direction, and fix the multiple metal plates 26 together to form a metal shell 2. The multiple strips 3 include a first strip 31 and at least one second strip 32. One first strip 31 connects a row of metal plates 26, and one second strip 32 connects a metal plate 26. In this embodiment, there are two first strips located on the front and back sides of a metal plate, and there are multiple second strips 32. In other embodiments, there can be only one first strip and one second strip. Step 2: Remove the second strip 32 while keeping the first strip 31. Move the first strip 31 and repeat the stacking of multiple metal plates 26 to form a metal shell 2. Finally, a strip 3 connects a row of metal shells 2. The stacking method here is the same as the stacking method in Step 1. Step 3: An insulating shell 1 is injection molded onto a metal shell 2. The insulating shell 1 includes multiple insulating elements 13 housed within the metal shell 2 and provides multiple signal terminals 4. The signal terminals 4 are assembled onto the insulating elements 13. In other embodiments, the insulating elements 13 may be injection molded onto the signal terminals 4, i.e., the signal terminals 4 are encapsulated within the insulating elements 13 as inserts during injection molding. Alternatively, the signal terminals 4 may be fixed to an insulating element 13 that is separate from the insulating shell 1. This fixing step of the signal terminals 4 can be performed before or after the injection molding of the insulating shell 1.

[0034] Step 4: Provide a row of grounding elements 5 and a third strip 53 connecting the row of grounding elements 5. Each grounding element 5 includes a fixing part 51 and a spring arm 52 extending from the fixing part 51. Operate the third strip 53 to weld the fixing part 51 of the row of grounding elements 5 to the upper surface of the metal housing 2. Step 4 can be performed after or before step 3.

[0035] In step 1, the main material of the metal plate 26 is copper. Multiple metal plates 26 are fixed together by diffusion welding, so that there are no gaps between two adjacent metal plates 26 on the wall of the receiving tank 21. The specific method of diffusion welding is to apply a pressure of 7000N to 9000N on one side of the stacked metal plates 26 and heat the temperature to 600 degrees Celsius to 800 degrees Celsius for 15s to 25s. It is worth noting that before diffusion welding, an anti-oxidation layer can be plated on the surface of the multiple metal plates 26 to prevent the metal plates 26 from oxidizing during the diffusion welding process.

[0036] Along the connection direction between the first strip 31 and the metal plate 26, the width of the first strip 31 is smaller than the width of the second strip 32. In step 2, the first strip 31 will not affect the removal process of the second strip 32.

[0037] Step 4 is performed after step 3. At this time, when the insulating shell 1 is injection molded, the grounding component 5 will not affect the placement of the mold, making the injection molding and sealing of the upper surface of the metal shell 2 smoother. In other embodiments, step 4 can also be performed before step 3.

[0038] In this embodiment, the metal housing 2 has only one metal plate 26 with first connecting parts 2631 on the front and rear sides. When manufacturing the electrical connector 100, the second material strip 32 connected to the second connecting part 2632 is removed before injection molding the insulating housing 1, while the first material strip 31 connected to the first connecting part 2631 is removed after injection molding the insulating housing 1. Therefore, only the first connecting part 2631 is exposed on the first side 11 of the insulating housing 1. Specifically, the first side 11 is recessed with a groove 111, and the first connecting part 2631 is exposed in the groove 111 and does not extend outward beyond the first side 11.

[0039] like Figure 7 , Figure 8 and Figure 9 The following is a second embodiment of the present invention: The electrical connector 100 structure in the second embodiment differs from that in the first embodiment in that each metal plate 26 has a connecting portion 263 on only one side, and the two connecting portions 263 corresponding to two adjacent metal plates 26 are located on the front and rear sides of the metal housing 2, respectively. The metal plate 26 connected to the first strip 31 is not located at the bottom of the metal housing 2, but between the other two metal plates 26. The positioning portion 25 is not formed by a single protruding partition portion 264, but by multiple protruding partition portions 264 stacked together. Other structures are the same as in the first embodiment.

[0040] The manufacturing steps of the electrical connector 100 in the second embodiment are as follows: Step 1: Provide multiple strips 3 and multiple metal plates 26. Each metal plate 26 is provided with a perforation 261. The multiple strips 3 include a first strip 31 and multiple second strips 32. A first strip 31 connects to a row of metal plates 26, and a second strip 32 connects to a metal plate 26. In other embodiments, there may be only one second strip. Step 2: Remove the second strip 32 while retaining the first strip 31. Align the perforations 261 of the multiple metal plates 26 vertically and weld the sides of the multiple metal plates 26 together using laser welding. Stack the multiple metal plates 26 vertically and fix them together using diffusion welding to form a metal shell 2. Ensure that there are no gaps between two adjacent metal plates 26 on the inner wall of the perforations 261. The multiple perforations 261 stacked vertically form a receiving groove 21, which is used to receive the signal terminal 4. Repeat the above steps to finally connect one first strip 31 to a row of metal shells 2. Step 3: Injection mold an insulating shell 1 onto a metal shell 2, and place the terminals in the metal shell 2. The method of placing the terminals in the metal shell 2 is the same as step 3 in the first embodiment.

[0041] Step 4: Provide a row of grounding elements 5 and a third strip 53 connecting the row of grounding elements 5. Each grounding element 5 includes a fixing part 51 and a spring arm 52 extending from the fixing part 51. The spring arm 52 is used to abut against the docking element upward. Operate the third strip 53 to weld the fixing part 51 of the row of grounding elements 5 to the upper surface of the metal housing 2.

[0042] In step 1, a metal plate 26 is connected to a strip 3 on only one side. For two adjacent metal plates 26, the two strips 3 they are connected to are located on the front and back sides of the metal shell 2 respectively. This design ensures that after multiple metal plates 26 are stacked to form a metal shell 2, there will be a gap between two adjacent strips 3 on the same side of the metal shell 2, which facilitates the removal of the strips 3.

[0043] In step 2, the step of removing the second strip 32 can be performed either before or after the multiple metal plates 26 are stacked to form a metal shell 2.

[0044] In summary, the electrical connector 100 provided by the present invention has the following beneficial effects: 1. By aligning multiple strips 3 vertically, multiple metal plates 26 are precisely positioned, resulting in a high-precision metal shell 2 formed by stacking the metal plates 26. The first strip 31 connects a row of metal plates 26, allowing the stacking process to be repeated to form a row of metal shells 2 in a short time, facilitating the large-scale production of the electrical connector 100. Removing the second strip 32 before injection molding the insulating shell 1 avoids cumulative tolerances in the multiple positioning holes 33 when the first strip 31 is moved to injection mold multiple insulating shells 1, which could lead to inaccurate positioning. It also avoids the impact of removing the second strip 32 after injection molding the plastic on the insulating shell 1.

[0045] 2. The positioning part 25 is positioned on the insulating shell 1, so that the insulating shell 1 and the metal shell 2 are tightly connected. On the other hand, when the insulating shell 1 is injection molded, the mold can be used to hold the positioning part 25 to prevent the metal shell 2 from shaking.

[0046] 3. The fixing groove 23 and multiple receiving grooves 21 are arranged side by side, and the shape is consistent with the shape of a part of the receiving groove 21. The distance between the fixing groove 23 and the adjacent receiving groove 21 is equal to the distance between two adjacent receiving grooves 21 in the same row. That is to say, when forming the metal plate 26, the notch 262 that is stacked to form the fixing groove 23 is actually formed by cutting the perforation 261 that is stacked to form the receiving groove 21. When making the metal shell 2, the fixing groove 23 can be obtained simultaneously when forming the receiving groove 21, which simplifies the manufacturing process.

[0047] 4. The width of the partition 264 of the bottom metal plate 26 is greater than the width of the partitions 264 of the other metal plates 26, and the design of the widened part 221 of the partition 22 allows the receiving groove 21 and the fixing groove 23 to have a shape that is larger at the top and smaller at the bottom. The part of the insulating shell 1 that is injection molded in the receiving groove 21 and the fixing groove 23 is not easy to fall off from the bottom, making the connection between the insulating shell 1 and the metal shell 2 more secure.

[0048] 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. A method for manufacturing an electrical connector, characterized in that, Includes the following steps: Step 1: Provide multiple strips and multiple metal plates. Each strip has a positioning hole. Align the positioning holes of the multiple strips vertically and stack the multiple metal plates vertically. Fix the multiple metal plates together to form a metal shell. The multiple strips include a first strip and at least one second strip. The first strip connects a row of metal plates, and the second strip connects a metal plate. Step 2: Remove the second material strip while keeping the first material strip; Step 3: Inject an insulating shell onto a metal housing and place the signal terminals inside the metal housing.

2. The method for manufacturing an electrical connector as described in claim 1, characterized in that, In step 1, along the connection direction between the first strip and the metal plate, the width of the first strip is smaller than the width of the second strip.

3. The method for manufacturing an electrical connector as described in claim 1, characterized in that, After step 2 and before step 3, the first strip is moved, and multiple metal plates are stacked repeatedly to form a metal shell, so that a first strip is connected to a row of metal shells.

4. The method for manufacturing an electrical connector as described in claim 1, characterized in that, The main material of the metal plate is copper. In step 1, multiple metal plates are fixed together by diffusion welding. Specifically, a pressure of 7000N to 9000N is applied to one side of the stacked metal plates, and the temperature is heated to 600 degrees Celsius to 800 degrees Celsius for 15 to 25 seconds.

5. The method for manufacturing an electrical connector as described in claim 1, characterized in that, It also includes step 4, which, after step 3, provides a row of grounding members and a third strip connecting the row of grounding members. Each grounding member includes a fixing part and a spring arm extending from the fixing part. The spring arm is used to abut against the docking element upward. The third strip is operated to weld the fixing part of the row of grounding members to the upper surface of the metal housing.

6. A method for manufacturing an electrical connector, characterized in that, Includes the following steps: Step 1: Provide multiple strips and multiple metal plates. Each metal plate has perforations. The multiple strips include a first strip and at least one second strip. The first strip connects a row of metal plates, and the second strip connects a metal plate. Step 2: Remove the second strip while keeping the first strip. Align the perforations of the multiple metal plates vertically, stack the multiple metal plates vertically, and fix the multiple metal plates together to form a metal shell. Step 3: Inject an insulating shell onto a metal housing and place the signal terminals inside the metal housing.

7. The method for manufacturing an electrical connector as described in claim 6, characterized in that, In step 2, after stacking and aligning multiple metal plates in the vertical direction, the sides of the multiple metal plates are welded together by laser welding, and then the multiple metal plates are fixed together by diffusion welding, so that there is no gap between two adjacent metal plates at the inner wall of the perforation. The multiple perforations are stacked to form a receiving groove, which is used to receive signal terminals.

8. The method for manufacturing an electrical connector as described in claim 6, characterized in that, In step 1, a metal plate has a connecting part on only one side, which is used to connect the strip. The two connecting parts of two adjacent metal plates are located on opposite sides of the metal shell. In step 2, multiple metal plates are first stacked to form a metal shell, and then the second strip is removed.

9. An electrical connector, characterized in that, include: An insulating outer casing having a first side surface; The metal shell and the insulating shell are injection molded on the metal shell. The metal shell includes multiple metal plates stacked on top of each other and a receiving groove that passes through the multiple metal plates on top of each other. The metal plates are provided with connecting parts protruding outward, and only one metal plate's connecting part is exposed on the first side. The two connecting parts of two adjacent metal plates on top of each other at least partially overlap when viewed from above. Signal terminals are housed in receiving slots.

10. The electrical connector as claimed in claim 9, characterized in that, The metal housing includes a fixing groove that extends through the edges of multiple metal plates in a vertical direction. A portion of the insulating housing is fixed to the fixing groove. The fixing groove is arranged side by side with multiple receiving grooves and has the same shape as a portion of the receiving groove. The distance between the fixing groove and an adjacent receiving groove is equal to the distance between two adjacent receiving grooves in the same row.

11. The electrical connector as claimed in claim 10, characterized in that, The insulating shell includes a second side adjacent to the first side, a connecting part is exposed on the first side, and a positioning part protrudes outward between two adjacent fixing grooves of the metal shell. The positioning part is positioned on the insulating shell and is exposed on the second side.

12. The electrical connector as claimed in claim 9, characterized in that, Each metal plate has a notch recessed at its edge. A portion of the insulating shell is fixed to the notch. Each metal plate has a partition between two adjacent notches. Multiple partitions stacked in the vertical direction form a rib. Among the multiple partitions corresponding to a rib, the width of the partition of the metal plate excluding the topmost metal plate is greater than the width of the partitions of the other metal plates in the direction perpendicular to the vertical direction and the notch recess direction.

13. The electrical connector as claimed in claim 12, characterized in that, The insulating housing includes multiple insulating components, which are injection molded into receiving grooves. Signal terminals are fixed to the insulating components. Along the direction perpendicular to the vertical direction and the notch recess direction, there is a partition between two adjacent receiving grooves. The partition has a widened portion, the width of which is greater than the width of other parts of the partition. The widened portion is located on the bottommost metal plate and is connected to the partition. The width of the widened portion is the same as the width of the partition.

14. The electrical connector as claimed in claim 9, characterized in that, There are no gaps between two adjacent metal plates on the walls of the receiving tank.

15. An electrical connector, characterized in that, include: Insulating outer casing; The metal shell and the insulating shell are injection molded on the metal shell. The metal shell includes multiple metal plates stacked on top of each other and a receiving groove that runs through the multiple metal plates from top to bottom. There is no gap between two adjacent metal plates on the groove wall. Each metal plate has a connecting part protruding outward and only one side of each metal plate has a connecting part. The connecting part is used to connect the strip. The two connecting parts corresponding to two adjacent metal plates are located on opposite sides of the metal shell. At least part of the connecting part is exposed in the metal shell. Signal terminals are housed in receiving slots.

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