Socket Connectors

Abstract

The present invention provides a socket connector, which includes a terminal block, two rows of conductive terminals arranged in the terminal block, and a metal shielding sheet arranged between the two rows of conductive terminals in the height direction, the two rows of conductive terminals are arranged in a corresponding and reverse manner, and include a plurality of first terminals arranged in one row and a plurality of second terminals arranged in another row, the terminal block has an inner insulator formed as a whole with the first terminals and the metal shielding sheet, and an outer insulator overmolded outside the inner insulator and the second terminals, and the second terminals are assembled on one side of the inner insulator in the height direction. The socket connector is convenient to manufacture and assemble.

Description

Technical Field

[0001] The invention relates to a socket connector, and in particular to a socket connector capable of transmitting data at high speed. Background Art

[0002] The Universal Serial Bus (USB) connector is the most common connection interface for computers. The USB connector is a plug-and-play external bus that can be used to connect a variety of peripheral devices, including speakers, phones, game joysticks, printers, scanners, cameras, etc. With the popularity of USB connectors, USB connectors have been widely used in the fields of charging and data transmission.

[0003] With the development of the electronics industry, the shortcomings of the existing USB2.0 socket connector, which requires front and back sides to be inserted and has a low transmission rate, have gradually emerged. In order to enable the USB socket connector to be inserted and used from both sides, the usual practice is to add a set of corresponding conductive terminals on the lower surface of the docking tongue of the USB socket connector. In order to increase the transmission rate of the USB socket connector, the usual practice is to increase the number of conductive terminals. This approach will cause a series of problems, such as the socket connector has poor strength and is easily damaged after multiple plug-ins; the conductive terminals are inconvenient to form and assemble with the insulating body and docking tongue of the socket connector; the upper and lower sets of conductive terminals will cause signal interference between each other, affecting the quality of electrical signal transmission.

[0004] The emergence of a socket connector that can be inserted and used from both sides, is easy to assemble, has a strong structure, and has high quality of electrical signal transmission can facilitate user use. As a new generation of USB 3.0 connectors, the USB Type-C connector not only has a plug interface that is no longer directional, that is, the plug connector can be inserted into the socket connector in both directions, but also supports a data transmission speed of 10Gbit / s. The USB Type-C connector includes a plastic base, upper and lower rows of conductive terminals arranged on the plastic base, and a shielding sheet sandwiched between the upper and lower rows of conductive terminals. The plastic base includes an upper and lower body and an insulating body injection molded outside the upper and lower bodies, and the upper and lower bodies are respectively injection molded outside the two rows of conductive terminals. In this way, three injection moldings are required to complete the production of the socket connector.

[0005] Therefore, it is necessary to provide an improved socket connector to overcome the above problems. Summary of the invention

[0006] The object of the present invention is to provide a socket connector which has a stable structure and is easy to manufacture.

[0007] To achieve the above-mentioned purpose of the invention, the present invention provides a socket connector, which includes a terminal block, conductive terminals arranged in two rows in the terminal block, and a metal shielding plate arranged between the two rows of conductive terminals along the height direction. The two rows of conductive terminals correspond to each other and are arranged in reverse, and include a plurality of first terminals arranged in one row and a plurality of second terminals arranged in another row. The terminal block has an inner insulator integrally formed with the first terminals and the metal shielding plate, and an outer insulator covered and molded outside the inner insulator and the second terminals. The second terminal is assembled on one side of the inner insulator along the height direction.

[0008] As a further improvement of the present invention, the metal shielding sheet and the first terminal connected to the first terminal strip are stacked at intervals in the height direction and then embedded in the inner insulator.

[0009] As a further improvement of the present invention, the second terminal connected to the second terminal strip is assembled on the upper side of the inner insulator along the height direction, and the fixing portion of each conductive terminal in the second terminal is inserted and fixed in the corresponding clamping groove provided on the upper surface of the inner insulator.

[0010] As a further improvement of the present invention, the upper surface of the inner insulator protrudes upward to form two rows of front and rear barriers, each row of the barriers is arranged in a row along the lateral direction, and the retaining groove is formed between two adjacent barriers in the same row.

[0011] As a further improvement of the present invention, the inner insulator has a rear side portion located at its rear side, a front side portion located at its front side, and a connecting portion connecting the front side portion and the rear side portion, the front row of partitions are located on the upper side of the connecting portion, and the rear row of partitions are located on the upper side of the rear side portion.

[0012] As a further improvement of the present invention, one of the top and bottom surfaces of the inner insulator is recessed toward a center surface of the socket connector extending in a horizontal direction to form at least one receiving groove for the molten plastic material used to form the outer insulator to flow into.

[0013] As a further improvement of the present invention, the socket connector also has a shielding shell covering the periphery of the terminal seat, and the base protrudes outward along the lateral direction on both sides to form a pair of oppositely arranged positioning portions, and the positioning portions are located at the top rear end of the base and fixedly matched with the shielding shell.

[0014] As a further improvement of the present invention, a positioning groove is respectively provided on both sides of the rear end of the shielding shell, and the positioning groove is formed by being recessed forward from the rear end surface of the shielding shell, opening backward and penetrating the shielding shell in the transverse direction so that the positioning groove is connected with the internal space of the shielding shell, and the positioning portion protrudes outward into the positioning groove on the corresponding side.

[0015] As a further improvement of the present invention, the metal shielding sheet includes a main body, a pair of locking portions located on both sides of the main body in the lateral direction and protruding outward, and a pair of connecting portions located on the front sides of the corresponding locking portions to connect with the shielding sheet material strip.

[0016] As a further improvement of the present invention, before molding the outer insulator, the shielding sheet material is removed from the front end of a pair of connecting parts. When the metal shielding sheet is molded inside the outer insulator, the locking part and the connecting part are both wrapped inside the outer insulator and the terminal seat is not protruded outward.

[0017] The beneficial effects of the present invention are as follows: the terminal seat of the socket connector in the present invention is composed of only an inner insulator and an outer insulator, wherein the inner insulator is injection molded around the first terminal and the metal shielding sheet, and when the second terminal is assembled to one side of the inner insulator along the height direction, the outer insulator is overmolded outside the inner insulator and the second terminal, and only two injection molding steps are required to complete the molding of the socket connector, with a simple manufacturing process and a stable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional assembly diagram of a socket connector in a preferred embodiment of the present invention;

[0019] Figure 2 yes Figure 1 a view of the socket connector from another perspective;

[0020] Figure 3 yes Figure 1 An exploded perspective view of the socket connector shown;

[0021] Figure 4 yes Figure 3 a view of the socket connector from another perspective;

[0022] Figure 5 yes Figure 3 A further exploded view of the socket connector after removing the shielding housing;

[0023] Figure 6 yes Figure 4 A three-dimensional view showing an inner insulator in the socket connector, a metal shielding sheet, and two rows of conductive terminals without removing the strip;

[0024] Figure 7 yes Figure 6 The shown is a three-dimensional schematic diagram of the socket connector after the outer insulator is formed and before the shielding shell is assembled;

[0025] Figure 8 yes Figure 3The shown socket connector is a three-dimensional assembly diagram after the shielding shell and the outer insulator are removed;

[0026] Fig. 9 yes Figure 8 The socket connector is shown as a three-dimensional schematic diagram with the inner insulator removed. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below in conjunction with the various embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0028] Please refer to Figures 1 to 9 The preferred embodiment of the socket connector 100 of the present invention is shown. The socket connector 100 of the present invention is installed on a circuit board (not shown), and includes a terminal block 1, two rows of conductive terminals 2 arranged in the terminal block 1, a metal shielding sheet 3 arranged between the two rows of conductive terminals 2, and a shielding shell 4 covering the periphery of the terminal block 1. The two rows of conductive terminals 2 include a plurality of first terminals 21 arranged in one row and a plurality of second terminals 22 arranged in the other row. The metal shielding sheet 3 is usually made of metal material and has conductivity.

[0029] Please refer to Figures 3 to 5 and Figure 7 As shown, in this embodiment, the terminal block 1 includes an inner insulator 11 integrally formed with the first terminal 21 and the metal shielding sheet 3, and an outer insulator 12 overmolded outside the inner insulator 11 and the second terminal 22, and the second terminal 12 is assembled on one side of the inner insulator 11 along the height direction.

[0030] The inner insulator 11 is injection molded around the first terminal 21 and the metal shielding sheet 3 to form a whole. The metal shielding sheet 3 and a row of the first terminals 21 are stacked at intervals in the height direction and then embedded in the inner insulator 11. In this embodiment, the first terminal 21 is the lower row terminal. In other embodiments, the metal shielding sheet 3 can also be embedded in the inner insulator 11 together with the second terminal 22 (upper row terminal).

[0031] In this embodiment, the inner insulator 11 has a rear side portion 111 located at the rear side thereof, a front side portion 112 located at the front side thereof, and a connecting portion 113 connecting the front side portion 112 and the rear side portion 111. The width of the front side portion 112 in the lateral direction is smaller than that of the connecting portion 113, and the width of the connecting portion 113 is smaller than that of the rear side portion 111.

[0032] The front side portion 112 of the inner insulator 11 has a plurality of through holes 1121 formed through the inner insulator 11 in the height direction. The through holes 1121 are arranged in a row in the lateral direction, and each docking portion 24 of each first terminal 21 is correspondingly provided with one through hole 1121 to effectively position the docking portion 24 of the first terminal 21 during injection molding. The through holes 1121 are shielded by the docking portion 24 of the corresponding first terminal 21 on the lower side of the inner insulator 11.

[0033] The upper surface of the front side portion 112 also has a plurality of spacers 1123 located at the front end thereof and arranged at intervals. The terminal head of the conductive terminal 2 is clamped between two adjacent spacers 1123 to effectively position the terminal head.

[0034] The upper surface of the inner insulator 11 protrudes upward to form two rows of front and rear fences 1112 and 1131, wherein the front row of fences 1131 is located on the upper side of the joint 113, and the rear row of fences 1112 is located on the upper side of the rear side portion 111. Each row of fences 1112 and 1131 is arranged in a row along the transverse direction, and a retaining groove 114 is formed between two adjacent fences 1112 and 1131 in the same row. The front and rear rows of fences 1112 and 1131 are spaced a certain distance apart along the front-to-back direction, and at the same time, each corresponding two of the two rows of fences 1112 and 1131 are aligned along the front-to-back direction. At least one side of the top of each fence 1112 and 1131 along the transverse direction is provided with an inclined guide surface 1141, so that the top opening of the retaining groove 114 is larger than the bottom opening thereof.

[0035] In this embodiment, the top and bottom surfaces of the coupling portion 113 are respectively recessed toward the central plane extending in the horizontal direction of the socket connector 100 to form at least one first receiving groove 1132. In addition, the top and bottom surfaces of the rear side portion 111 are respectively recessed toward the central plane to form at least one second receiving groove 1113. The first and second receiving grooves 1132 and 1113 are collectively referred to as receiving grooves. In other embodiments, only one of the top and bottom surfaces of the coupling portion 113 or the rear side portion 111 is recessed toward the central plane to form at least one receiving groove 1132 and 1113, that is, one of the top and bottom surfaces of the inner insulator 11 is recessed toward the central plane to form at least one receiving groove 1132 and 1113. The first receiving groove 1132 is located between the front and rear rows of barriers 1112 and 1131 along the front-to-back direction.

[0036] The inner insulator 11 has a plurality of positioning holes 1122 and 1133 recessed from the top and bottom surfaces thereof toward the center surface thereof, and the front side portion 112 and the joint portion 113 are respectively provided with a pair of positioning holes 1122 and 1133, so as to effectively position the metal shielding sheet 3 during injection molding of the inner insulator 11. The pair of positioning holes 1122 located at the front side portion 112 are symmetrically arranged, and the pair of positioning holes 1133 located at the joint portion 113 are symmetrically arranged.

[0037] The outer insulator 12 has a base portion 121 located at the rear side thereof, a tongue portion 122 located at the front side, and a middle portion 123 located between the base portion 121 and the tongue portion 122. The tongue portion 122 has two surfaces arranged opposite to each other in the height direction, and the butt joint portions 24 of the two rows of conductive terminals 2 are arranged on the two surfaces of the tongue portion 122 respectively.

[0038] The two sides of the base 121 in the transverse direction respectively protrude outward in the transverse direction to form a pair of positioning parts 1211 arranged opposite to each other. The positioning parts 1211 are located at the rear end of the top of the base 121 and are fixedly matched with the shielding shell 4. The front end of the top of the base 121 is recessed downward and backward to form a limiting groove 1212, and the limiting groove 1212 is open upward and forward. The base 121 also has a pair of locking grooves 1213 recessed forward from its rear end surface. The pair of locking grooves 1213 are arranged at intervals in the transverse direction and are located between the pair of positioning parts 1211.

[0039] When the outer insulator 12 is molded over the inner insulator 11, the base portion 121 is covered over the rear side portion 111, the tongue portion 122 is covered over the front side portion 112, and the middle portion 123 is covered over the joint portion 113. The molten plastic material is filled into the receiving grooves 1113 and 1132 on the upper and lower sides of the inner insulator 11, so that the inner insulator 11 and the outer insulator 12 are reliably combined.

[0040] Please refer to Figures 2 to 9 As shown, the conductive terminal 2 includes the first terminal 21 and the second terminal 22 arranged in two rows along the height direction. The first terminal 21 corresponds to the second terminal 22 and is arranged in reverse, and both are the same as the arrangement of the conductive terminals in the standard USB Type C socket connector.

[0041] The first terminal 21 and the second terminal 22 are each provided with a pair of ground terminals g, a pair of power terminals p and four signal terminals located between the pair of power terminals p, the pair of ground terminals g are respectively located on both sides of the first terminal 21 or the second terminal 22, and the power terminal p is located on the inner side of the adjacent ground terminal g. The four signal terminals include a CC terminal, a D+ terminal, a D- terminal and an SBU terminal arranged in sequence; wherein the D+ terminal and the D- terminal are mainly used to transmit USB 2.0 signals.

[0042] Each of the first and second conductive terminals 21 and 22 has a fixing portion 23 fixed to the inner insulator 11, a butt joint portion 24 extending forward from the fixing portion 23 and exposed to the outside of the tongue portion 122 of the outer insulator 12, and a soldering foot 25 extending out of the terminal block 1. In this embodiment, the soldering foot 25 and the butt joint portion 24 are arranged parallel to each other, and in the height direction, the soldering foot 25 is located at the lower side of the butt joint portion 24. In addition, the soldering feet 25 of the first terminal 21 and the second terminal 22 are located in the same row (such as Figure 2 , 6 , 7), and is soldered to the circuit board using surface soldering.

[0043] At the same time, the solder pins 25 of the ground terminal g and the power terminal p in the first terminal 21 are arranged side by side with the corresponding solder pins 25 of the ground terminal g and the power terminal p in the second terminal 22 (eg Figure 2 , 6 , 7), a certain distance is left between the signal terminals in the two rows of conductive terminals and the adjacent conductive terminals.

[0044] The terminal heads at the front ends of the first terminal 21 and the second terminal 22 are respectively connected to the corresponding front terminal strips. The soldering foot 25 of the first terminal 21 is connected to the first terminal strip 51, and the soldering foot 25 of the second terminal 22 is connected to the second terminal strip 52, and the rear end of the soldering foot 25 is a strip connection portion. When the second terminal 22 is assembled to the inner insulator 11, the second terminal strip 52 is stacked and placed on the upper surface of the first terminal strip 51. In addition, in this embodiment, in order to prevent the first terminal strip 51 and the second terminal strip 52 from being completely overlapped, the first terminal strip 51 and / or the second terminal strip 52 are provided with a welding portion 501 that is fixedly connected to each other, and the first terminal strip 51 and the second terminal strip 52 are fixed by laser welding through the welding portion 501.

[0045] Please refer to Figures 3 to 9As shown, the metal shielding sheet 3 is embedded and molded together with the first terminal 21 connected to the first terminal strip 51 in the inner insulator 11, and the second terminal 22 connected to the second terminal strip 52 is assembled on the upper side of the inner insulator 11 integrally formed with the metal shielding sheet 3 and the first terminal 21, wherein the fixing portion 23 of each conductive terminal in the second terminal 22 is inserted from top to bottom into the corresponding clamping groove 114 under the guidance of the inclined guide surface 1141, and is fixed by interference with the corresponding clamping groove 114 by means of the protrusions 231 arranged on both sides thereof.

[0046] In this embodiment, on the basis of the interference retention between the fixing portion 23 and the clamping groove 114, the barriers 1112 and 1131 on both sides of each clamping groove 114 can be further hot-melted so that the molten material can cover the fixing portion 23, so as to further reliably position the second terminal 22 on the upper side of the inner insulator 11. Of course, in other embodiments of the present invention, the positioning of the second terminal and the inner insulator 11 can also be achieved by only using the interference retention between the protrusion 231 and the clamping groove 114.

[0047] The outer insulator 12 is molded over the inner insulator 11 assembled with the second terminal 22, and the outer contour of the metal shielding sheet 3 roughly corresponds to the shape design of the opposite side surface of the outer insulator 12, and is located between the first terminal 21 and the second terminal 22 in the height direction to effectively isolate the first terminal 21 and the second terminal 22 to prevent interference between the two rows of conductive terminals. In this embodiment, the metal shielding sheet 3 and the conductive terminal 2 are made of different materials, and the material of the metal shielding sheet 3 is harder than that of the conductive terminal 2. For example, the metal shielding sheet 3 can be made of an alloy material and the conductive terminal 2 is made of copper. In other embodiments, the metal shielding sheet 3 can also be made of the same material as the conductive terminal 2.

[0048] Please refer to Figure 5 and Fig. 9 As shown, the metal shielding sheet 3 is a sheet-like structure arranged horizontally, and includes a U-shaped main body 31 and a pair of locking portions 32 located on both sides of the main body 31 in the transverse direction and protruding outward. The main body 31 of the metal shielding sheet 3 is provided with a notch 311 and a pair of through holes 312 penetrating the main body 31 in the height direction, the notch 311 extending in the transverse direction and located at the rear of the middle of the main body 31, and the pair of through holes 312 are located on both sides of the notch 311 in the transverse direction. In this embodiment, in the front-to-back direction, the pair of through holes 312 are located at the front side of the notch 311.

[0049] The gap 311 is formed by a pair of oppositely arranged side walls 3112 and a transverse wall 3113 connected to the pair of side walls 3112. The side walls 3112 extend along the front-to-back direction. In the transverse direction, the pair of side walls 3112 are respectively located on the outside of the power terminals p adjacent thereto.

[0050] The main body 31 also has a pair of first receiving holes 313 located on both sides of the notch 311 in the transverse direction and a pair of second receiving holes 314 located inside the corresponding locking portion 32. The first receiving holes 313 are non-enclosed structures formed by being recessed inward from the corresponding side edges of the main body 31 in the transverse direction, and the second receiving holes 314 penetrate the main body 31 in the height direction. The molten plastic material used to form the inner insulator 11 enters the first and second receiving holes 313 and 314 to enhance the bonding strength between the metal shielding sheet 3 and the inner insulator 11.

[0051] During the embedding molding process, a pin (not shown) is inserted into the notch 311 and the through hole 312 to clamp the metal shielding sheet 3 and the first terminal 21 up and down to ensure the position of the metal shielding sheet 3 and the coplanarity of each first terminal 21. At the same time, the molten plastic material used to form the outer insulator 12 enters the notch 311 and the through hole 312 to strengthen the bonding strength between the metal shielding sheet 3 and the outer insulator 12.

[0052] The metal shielding sheet 3 also has a pair of connecting parts 33 located on the front side of the corresponding locking parts 32. The metal shielding sheet 3 is connected to the shielding sheet material strip (not shown) through the connecting parts 33 on its front side, that is, the shielding sheet material strip connected to the metal shielding sheet 3 is located on the front side of the terminal seat 1.

[0053] When the metal shielding sheet 3 is embedded in the inner insulator 11, the locking portion 32 protrudes outward from the outside of the inner insulator 11, and the connecting portion 33 is exposed outside the front end surface of the inner insulator 11 to facilitate the cutting of the shielding sheet material strip. The main body 31 is only exposed to the outside of the inner insulator 11 on both side edges in the lateral direction and adjacent to the rear side of the locking portion 32, and the rest of the body is covered in the inner insulator 12, and the rear end surface of the metal shielding sheet 3 is buried inside the rear side portion 111 of the inner insulator 11. In other words, the metal shielding sheet 3 does not have any structure protruding backward from the inner insulator 11. It is a short body structure with only two sides protruding outside the inner insulator 11. In this way, the metal shielding sheet 3 does not have traditional structural features such as solder feet for soldering to the circuit board, eliminating the subsequent assembly and welding processes.

[0054] Before molding the outer insulator 12, the shielding sheet material is removed from the front end of a pair of connecting portions 33. When the metal shielding sheet 3 is molded in the outer insulator 12, the locking portion 32 and the connecting portion 33 are both wrapped in the outer insulator 12 of the terminal block 1 and do not protrude outward from the terminal block 1. When docking with the docking connector, the outer insulator 12 made of plastic material and the corresponding parts of the locking portion 32 are locked with the docking connector, which can avoid the metal shielding sheet 3 made of metal from directly sliding and rubbing against the docking connector and causing wear of the docking connector, and the docking is smoother.

[0055] Please refer to Figures 1 to 4 As shown, the shielding shell 4 is arranged in an elliptical tubular shape as a whole and covers the periphery of the terminal seat 1. The shielding shell 4 has a pair of limit plates 41 bent and inclined downwardly extending from its top wall and at least one convex structure 42 protruding from its top wall and / or bottom wall into its tubular space, the limit plate 41 is located at the rear end of the shielding shell 4 and extends downward into the locking groove 1213 corresponding to the rear end of the outer insulator 12, and the convex structure 42 protrudes into the limit groove 1212.

[0056] A positioning notch 43 is respectively provided on both sides of the rear end of the shielding shell 4. The positioning notch 43 is formed by being recessed forward from the rear end surface of the shielding shell 4, and is open to the rear and penetrates the shielding shell 4 in the transverse direction, so that the positioning notch 43 is connected with the tubular space of the shielding shell 4. The positioning portions 1211 on both sides of the outer insulator 12 protrude outward into the positioning notch 43 on the corresponding side to limit the outer insulator 12 from moving forward, and at the same time limit the terminal seat 1 in the tubular space of the shielding shell 4 in the transverse direction. A plurality of downwardly extending mounting feet 44 are provided on both sides of the shielding shell 4 to fix the socket connector 100 to the circuit board.

[0057] The terminal seat 1 of the socket connector in the present invention is composed of only an inner insulator 11 and an outer insulator 12, wherein the inner insulator 11 is injection molded on the periphery of the first terminal 21 and the metal shielding sheet 3. When the second terminal 22 is assembled to one side of the inner insulator 11 along the height direction, the outer insulator 12 is overmolded on the outside of the inner insulator 11 and the second terminal 22. Only two injection molding steps are required to complete the molding of the socket connector, and the manufacturing process is simple and the structure is stable.

[0058] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0059] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A socket connector, comprising a terminal block, two rows of conductive terminals arranged in the terminal block, and a metal shielding sheet arranged between the two rows of conductive terminals in a height direction, wherein the two rows of conductive terminals correspond to each other and are arranged in opposite directions, and the socket connector comprises a plurality of first terminals arranged in one row and a plurality of second terminals arranged in another row, wherein: The terminal seat comprises an inner insulator integrally formed with the first terminal and the metal shielding sheet, and an outer insulator covered and molded outside the inner insulator and the second terminal, the second terminal being assembled on one side of the inner insulator along the height direction, the metal shielding sheet comprising a main body, a pair of locking portions located on both sides of the main body in the lateral direction and protruding outward, and a pair of connecting portions located on the front side of the corresponding locking portions to be connected to the shielding sheet material strip, before molding the outer insulator, the shielding sheet material strip is removed from the front end of the pair of connecting portions, and when the metal shielding sheet is molded inside the outer insulator, the locking portion and the connecting portion are both wrapped inside the outer insulator and do not protrude outward from the terminal seat.

2. The socket connector according to claim 1, wherein: The metal shielding sheet and the first terminal connected with the first terminal strip are stacked at intervals in the height direction and then embedded in the inner insulator.

3. The socket connector according to claim 2, wherein: The second terminal connected with the second terminal strip is assembled on the upper side of the inner insulator along the height direction, and the fixing portion of each conductive terminal in the second terminal is inserted and fixed in the corresponding clamping groove arranged on the upper surface of the inner insulator.

4. The socket connector according to claim 3, wherein: The upper surface of the inner insulator protrudes upward to form two rows of front and rear barriers, each row of the barriers is arranged in a row along the transverse direction, and the retaining groove is formed between two adjacent barriers in the same row.

5. The socket connector according to claim 4, wherein: The inner insulator has a rear side portion located at its rear side, a front side portion located at its front side, and a connecting portion connecting the front side portion and the rear side portion, the front row of the partitions are located on the upper side of the connecting portion, and the rear row of the partitions are located on the upper side of the rear side portion.

6. The socket connector according to any one of claims 1 to 5, characterized in that: One of the top and bottom surfaces of the inner insulator is recessed toward a center surface of the socket connector extending in a horizontal direction to form at least one receiving groove for the molten plastic material used to form the outer insulator to flow into.

7. The socket connector according to claim 6, wherein: The socket connector also has a shielding shell covering the periphery of the terminal seat, and the outer insulator has a base located on its rear side. The base protrudes outward along the transverse direction on both sides in the transverse direction to form a pair of oppositely arranged positioning parts, and the positioning parts are located at the top rear end of the base and fixedly matched with the shielding shell.

8. The socket connector according to claim 7, wherein: A positioning groove is provided on both sides of the rear end of the shielding shell, and the positioning groove is formed by being recessed forward from the rear end surface of the shielding shell. It is open backward and penetrates the shielding shell in the transverse direction so that the positioning groove is connected with the internal space of the shielding shell, and the positioning portion protrudes outward into the positioning groove on the corresponding side.

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