Terminal position-limiting structure of connector

Abstract

The application discloses a terminal limiting structure of a connector, which can prevent the terminal from floating and deforming when being glued again. The application comprises a terminal carrier, wherein the terminal carrier is provided with a terminal group; the terminal carrier is provided with a plurality of clamping grooves, and the terminal group is riveted and pressed and embedded in the clamping grooves; the clamping groove comprises a positioning groove, and the positioning groove is arranged on the terminal carrier; the two sides of the positioning groove are provided with corresponding positioning columns which protrude out of the plane of the terminal carrier and are matched, the inner side wall surface top of the positioning column is provided with an inward protruding pressing block, the inner side wall surface top of the positioning column on one side of the positioning groove is provided with an inward protruding pressing block, the bottom surface of the positioning groove is arranged on the surface of the terminal carrier, and the bottom surface of the positioning groove and the surface of the terminal carrier are located on the same plane. The application adopts the design of the four-side buckle terminal structure of the positioning groove, and the four-side buckle limiting structure of the terminal is strengthened when the insulating seat body is glued.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and in particular to a four-sided snap-fit ​​limiting structure design for connector terminals during injection molding. Background Technology

[0002] Connectors are mainly used in computer peripherals, servers, routers, switching equipment and other products for data transmission and peripheral connection, and are widely used in networking, communication, automation control and other fields.

[0003] As electronic products become increasingly feature-rich and the market diversifies, the structural requirements for products are increasing, and the stability requirements for connectors are also rising. This necessitates the addition of terminal fixing structures to connectors for protection. In conventional USB Type-C connector structures, the standard USB molding design uses three-sided limiting for the terminals, meaning the terminals only have left, right, and bottom limiting, lacking top limiting. During molding, the terminals are prone to floating and deforming from the top, thus affecting signal transmission quality. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the purpose of this invention is to provide a limiting structure for four-sided snap-fit ​​terminals, which can effectively prevent the terminals from floating and deforming during the molding process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A terminal limiting structure for a connector includes a terminal carrier, on which a terminal group is provided; the terminal carrier is provided with a plurality of clamping grooves, and the terminal group is riveted and embedded in the clamping grooves;

[0007] The clamping groove includes a positioning groove, which is set on the terminal carrier; on both sides of the positioning groove, there are corresponding positioning posts that extend out of the plane of the terminal carrier and are matched; the top of the positioning posts facing the inner wall of the positioning groove has an inwardly protruding pressing block.

[0008] The top of the inner wall of the positioning column on one side of the positioning groove is provided with an inwardly protruding pressing block;

[0009] The bottom surface of the positioning groove is set on the surface of the terminal carrier, and the bottom surface of the positioning groove and the surface of the terminal carrier are on the same plane. The thickness (width) of the pressing block is 1 / 4 to 1 / 7 of the width of the positioning groove.

[0010] Furthermore, in some embodiments, the ratio of the length D2 of the pressing block to the width D1 of the inner sidewall is 1:1.5 to 2.5.

[0011] Furthermore, in some embodiments, the top of the inner wall of the positioning posts on both sides of the positioning groove is provided with inwardly protruding, symmetrically matched pressing blocks; that is, the top of the inner wall of both sides of the positioning groove is provided with inwardly protruding, corresponding pressing blocks.

[0012] Furthermore, in some embodiments, the length D2 of the pressing block is in the ratio of the sidewall width D1 of the inner sidewall to 1:2;

[0013] The top of the inner wall of the positioning posts on both sides of the positioning groove is provided with inwardly protruding, staggered pressure blocks;

[0014] The pressure blocks on both sides of the positioning groove are staggered and arranged in a corresponding manner on the same plane.

[0015] Furthermore, in some embodiments, the thickness (width) of the holding block is 1 / 6 of the width of the positioning groove, and the portion of the holding block that protrudes inward on the inner wall surface is blocked on the positioning groove.

[0016] Furthermore, in some embodiments, the top of the positioning post is provided with an inclined insertion surface that is inclined toward the positioning groove, the top surface of the pressing block is on the same plane as the inclined insertion surface, and the pressing block is an isosceles trapezoid.

[0017] The bottom surface of the pressing block is perpendicular to the inner wall surface, and the bottom surface of the pressing block is parallel to the bottom surface of the positioning groove.

[0018] Furthermore, in some embodiments, the positioning groove is provided with a hollowed-out hole that penetrates the terminal carrier, and the hollowed-out hole is located below the pressure block;

[0019] One end of the hollow hole is set on the bottom surface of the positioning groove, and the other end of the hollow hole is set on the surface of the terminal carrier facing away from the positioning groove.

[0020] Furthermore, in some embodiments, the terminal group is riveted and embedded in the clamping groove, the left and right sides of the inner wall abut against the two sides of the terminal group, the bottom surface of the terminal group is pressed against the bottom surface of the positioning groove, the top surface of the terminal group is pressed against the bottom of the clamping block, and the terminal group is vertically and horizontally limited and embedded in the clamping groove.

[0021] Furthermore, in some embodiments, a front row clamping groove is provided on the side of the terminal carrier near the tongue plate, a rear row clamping groove is provided on the end of the terminal carrier away from the tongue plate, and a middle clamping groove is provided in the middle of the terminal carrier between the front row clamping groove and the rear row clamping groove.

[0022] The front clamping groove, the middle clamping groove, and the rear clamping groove are arranged symmetrically and parallelly.

[0023] The front clamping groove consists of several clamping grooves arranged in parallel intervals, the middle clamping groove consists of several clamping grooves arranged in parallel intervals in rows and columns, and the rear clamping groove consists of several clamping grooves arranged in parallel intervals in rows and columns.

[0024] A method for molding a terminal limiting structure for a connector, wherein the molding method employs two-stage injection molding, as follows:

[0025] S1. The isolation sheet is injection molded and installed on the terminal carrier;

[0026] S2. Rivet the (upper and lower) terminal assembly onto the terminal carrier, remove the material strip, and obtain a semi-finished product;

[0027] S3. The above semi-finished product is then injection molded into the insulating base;

[0028] S4. Rivet the inner shell onto the above-mentioned insulating base, and then fit the outer shell onto the inner shell.

[0029] This invention is applied to USB Type-C connectors, employing a four-sided snap-fit ​​terminal structure design with positioning grooves. The left and right sides of the inner wall abut against the two sides of the terminal group, the bottom surface of the terminal group presses against the bottom surface of the positioning groove, and the top surface of the terminal group presses against the underside of the holding block. This ensures the terminals are vertically and horizontally positioned and embedded in the clamping groove. During molding of the insulating base, the added four-sided snap-fit ​​terminal limiting structure strengthens the terminal's four-sided snap-fit ​​limiting structure, effectively preventing the terminals from floating and deforming during subsequent molding. Attached Figure Description

[0030] Figure 1 This is a cross-sectional view of the terminal carrier portion according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the terminal carrier portion according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of injection molding according to an embodiment of the present invention;

[0034] Figure 5 This is a three-dimensional schematic diagram of the terminal carrier portion according to an embodiment of the present invention;

[0035] Figure 6 This is a top view of the terminal carrier portion according to an embodiment of the present invention;

[0036] Figure 7 This is a three-dimensional schematic diagram of an embodiment of the present invention;

[0037] Figure 8 This is a perspective view of the terminal group portion according to an embodiment of the present invention;

[0038] Figure 9 This is an exploded view of an embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram of the clamping groove portion according to an embodiment of the present invention;

[0040] Figure 11 for Figure 2 An enlarged schematic diagram of part A in the middle.

[0041] Explanation of markings in the diagram:

[0042] Insulating base 11, inner shell 12, outer shell 13, terminal carrier 14, isolation plate 15, bending reinforcing arm 16, tongue plate 17, plug-in piece 18, terminal group 19, clamping groove 21, positioning groove 22, inner side wall 23, pressing block 24, inclined insertion surface 25, positioning post 26, front row clamping groove 27, middle clamping groove 28, rear end clamping groove 29, hollow hole 31. Detailed Implementation

[0043] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the embodiments and features in the embodiments of this application may be combined with each other without conflict. To further understand the features, technical means, and specific objectives and functions achieved by the present invention, and to analyze the advantages and spirit of the present invention, a detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments is provided below.

[0044] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "front," "rear," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0045] The present invention includes an isolation sheet 15, on which a plurality of bent reinforcing arms 16 are provided, and the isolation sheet 15 and the bent reinforcing arms 16 are embedded in a terminal carrier 14; the terminal carrier 14 is provided with a plurality of clamping grooves 21, and the terminal carrier 14 is provided with a terminal group 19, which is riveted and embedded in the clamping grooves 21.

[0046] Terminal carrier 14 and terminal group 19 are injection molded and embedded in insulating base 11. One end of insulating base 11 is provided with tongue plate 17. Inner shell 12 is sleeved on insulating base 11. Insulating base 11 is embedded in inner shell 12. Tongue plate 17 is disposed in inner shell 12. Outer shell 13 is sleeved on inner shell 12. A plurality of longitudinally extending plug-in pieces 18 are provided on outer shell 13.

[0047] Furthermore, a front clamping groove 27 is provided on the side of the terminal carrier 14 near the tongue plate 17, and a rear clamping groove 29 is provided on the end of the terminal carrier 14 away from the tongue plate 17. A middle clamping groove 28 is provided in the middle of the terminal carrier 14 between the front clamping groove 27 and the rear clamping groove 29.

[0048] The optimized arrangement features symmetrical and parallel clamping slots 27, 28, and 29. The front clamping slot 27 consists of several clamping slots 21 arranged in parallel intervals; the middle clamping slot 28 consists of several clamping slots 21 arranged in rows and columns; and the rear clamping slot 29 consists of several clamping slots 21 arranged in parallel rows and columns. The parallel interval arrangement between the clamping slots refers to their parallel arrangement in rows and columns; in other words, the parallel interval arrangement means that the parallel interval slots are arranged in rows and columns.

[0049] The clamping groove 21 includes a positioning groove 22, which is disposed on the terminal carrier 14. Furthermore, the bottom surface of the positioning groove 22 is disposed on the surface of the terminal carrier 14. In other words, the bottom surface of the positioning groove 22 and the surface of the terminal carrier 14 are located on the same plane, that is, the bottom surface of the positioning groove 22 and the surface of the terminal carrier 14 are disposed on the same plane.

[0050] Positioning posts 26 protruding from the plane of terminal carrier 14 are provided on both sides of positioning groove 22. The top of the inner wall 23 of positioning post 26 facing positioning groove 22 is provided with inwardly protruding pressing block 24. The top of positioning post 26 is provided with inclined insertion surface 25 that is inclined towards positioning groove 22. The top surface of pressing block 24 is on the same plane as inclined insertion surface 25. Pressing block 24 is an isosceles trapezoid.

[0051] The thickness (width) of the holding block 24 is 1 / 4 to 1 / 7 of the width of the positioning groove 22; preferably, the thickness (width) of the holding block 24 is 1 / 6 of the width of the positioning groove 22, that is, the part of the holding block 24 that protrudes inward on the inner wall 23 is blocked on the positioning groove 22.

[0052] Furthermore, to ensure better riveting, locking, and elastic tolerance of the terminal assembly 19 within the clamping groove 21, the ratio of the length D2 of the clamping block 24 to the width D1 of the inner wall surface 23 is 1:1.5 to 2.5. Preferably, the ratio of the length D2 of the clamping block 24 to the width D1 of the inner wall surface 23 is 1:2, meaning the length D2 of the clamping block 24 is half the width D1 of the inner wall surface 23.

[0053] The positioning groove 22 has a hollowed-out hole 31 penetrating the terminal carrier 14, and the hollowed-out hole 31 is located below the pressure block 24. Furthermore, one end of the hollowed-out hole 31 is located on the bottom surface of the positioning groove 22, and the other end is located on the surface of the terminal carrier 14 facing away from the positioning groove 22. The hollowed-out hole 31 is used to enhance the embedding strength of the insulating base 11 after injection molding onto the terminal carrier 14, and to strengthen the firmness between the insulating base 11 and the terminal carrier 14 insert.

[0054] After the terminal assembly 19 is riveted and embedded in the clamping groove 21, see the attached document. Figure 10 As shown, the inner wall 23 is pressed against the two sides of the terminal group 19 on both sides, the bottom surface of the terminal group 19 is pressed against the bottom surface of the positioning groove 22, and the top surface of the terminal group 19 is pressed against the bottom of the holding block 24, that is, the terminal group 19 is limited and embedded in the clamping groove 21 in the upper, lower and left and right directions.

[0055] Description of the USB Type-C connector Molding card terminal structure design of this invention:

[0056] The injection molding process incorporates a four-sided terminal locking structure to effectively prevent the terminals from floating and deforming during subsequent molding. The terminal assembly (upper and lower) 19 is then assembled and crimped; the semi-finished product is removed from the material strip, and then injection molded again.

[0057] See appendix Figure 4 As shown, this invention employs a two-stage injection molding process:

[0058] S1. The isolation sheet 15 is injection molded and disposed on the terminal carrier 14;

[0059] S2. Assemble and rivet the (upper and lower) terminal group 19 onto the terminal carrier 14, remove the material strip, and obtain a semi-finished product;

[0060] S3. The above semi-finished product is then injection molded into the insulating base 11;

[0061] S4. Rivet the inner shell 12 onto the aforementioned insulating base 11, and then fit the outer shell 13 onto the inner shell 12.

[0062] The above embodiments only illustrate several preferred implementations of the present invention, and their descriptions are relatively specific and detailed. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be modified within the scope of the inventive concept described herein through the above teachings or related field techniques or knowledge. This should not be construed as a limitation on the scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the inventive concept. Such modifications and changes do not depart from the spirit and scope of the present invention, and all fall within the protection scope of the appended claims. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A terminal limiting structure for a connector, comprising: Terminal carrier (14), wherein terminal group (19) is provided on the terminal carrier (14); characterized in that the terminal carrier (14) is provided with a plurality of clamping grooves (21), and the terminal group (19) is riveted and embedded in the clamping grooves (21); The clamping groove (21) includes a positioning groove (22), which is disposed on the terminal carrier (14); the positioning groove (22) has corresponding positioning posts (26) extending out of the plane of the terminal carrier (14) on both sides; the positioning posts (26) have inwardly protruding pressing blocks (24) on the top of the inner wall surface (23) of the positioning groove (22); The top of the inner wall (23) of the positioning post (26) on one side of the positioning groove (22) is provided with an inwardly protruding pressing block (24). The bottom surface of the positioning groove (22) is disposed on the surface of the terminal carrier (14), the bottom surface of the positioning groove (22) and the surface of the terminal carrier (14) are located on the same plane, and the thickness of the pressing block (24) is 1 / 4 to 1 / 7 of the width of the positioning groove (22). The top of the positioning post (26) is provided with an inclined insertion surface (25) that is inclined toward the positioning groove (22), and the top surface of the pressing block (24) is on the same plane as the inclined insertion surface (25); The bottom surface of the pressing block (24) is perpendicular to the inner wall surface (23), and the bottom surface of the pressing block (24) is parallel to the bottom surface of the positioning groove (22).

2. The terminal limiting structure of a connector according to claim 1, characterized in that, The ratio of the length D2 of the holding block (24) to the width D1 of the inner sidewall (23) is 1:1.5 to 2.

5.

3. The terminal limiting structure of a connector according to claim 1, characterized in that, The inner wall (23) of the positioning column (26) on both sides of the positioning groove (22) is provided with an inwardly protruding, symmetrically matched pressing block (24).

4. The terminal limiting structure of a connector according to claim 2, characterized in that, The length D2 of the pressing block (24) is 1:2 to the length of the sidewall width D1 of the inner sidewall (23); The inner wall (23) of the positioning column (26) on both sides of the positioning groove (22) is provided with inwardly protruding, staggered pressing blocks (24). The pressing blocks (24) on both sides of the positioning groove (22) are staggered and arranged in front and behind on the same plane.

5. The terminal limiting structure of a connector according to claim 1, characterized in that, The thickness of the holding block (24) is 1 / 6 of the width of the positioning groove (22). The part of the holding block (24) that protrudes inward and is hung on the inner wall (23) is blocked on the positioning groove (22).

6. The terminal limiting structure of a connector according to claim 1, characterized in that, The positioning groove (22) is provided with a hollow hole (31) that penetrates the terminal carrier (14), and the hollow hole (31) is located below the pressure block (24); One end of the hollow hole (31) is located on the bottom surface of the positioning groove (22), and the other end of the hollow hole (31) is located on the surface of the terminal carrier (14) facing away from the positioning groove (22).

7. The terminal limiting structure of a connector according to claim 1, characterized in that, The terminal group (19) is riveted and embedded in the clamping groove (21). The left and right sides of the inner wall (23) abut against the two sides of the terminal group (19). The bottom surface of the terminal group (19) is pressed against the bottom surface of the positioning groove (22). The top surface of the terminal group (19) abuts against the bottom of the pressing block (24). The terminal group (19) is vertically and horizontally limited and embedded in the clamping groove (21).

8. The terminal limiting structure of a connector according to claim 1, characterized in that, The terminal carrier (14) has a front row clamping groove (27) on one side near the tongue plate (17), a rear end clamping groove (29) on one end away from the tongue plate (17), and a middle clamping groove (28) between the middle of the terminal carrier (14) and the front row clamping groove (27) and the rear end clamping groove (29). The front clamping groove (27), the middle clamping groove (28), and the rear clamping groove (29) are arranged symmetrically and parallelly; The front clamping groove (27) is composed of several clamping grooves (21) arranged in parallel intervals, the middle clamping groove (28) is composed of several clamping grooves (21) arranged in parallel intervals, and the rear clamping groove (29) is composed of several clamping grooves (21) arranged in parallel intervals.

9. A method for molding the terminal limiting structure of the connector according to any one of claims 1 to 8, characterized in that, The molding method employs a two-stage injection molding process: S1. The isolation sheet (15) is injection molded and disposed on the terminal carrier (14); S2. Assemble and rivet the terminal group (19) onto the terminal carrier (14), remove the material strip, and obtain a semi-finished product; S3. The above semi-finished product is then injection molded and placed in the insulating base (11); S4. Rivet the inner shell (12) onto the above-mentioned insulating base (11), and then fit the outer shell (13) onto the inner shell (12).

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