Upright double-layer USB connector

Abstract

This utility model relates to a vertical double-layer USB connector, comprising a frame-shaped plastic shell, two cores, several terminals, an iron shell, and a U-shaped metal spacer. The cores have tongue portions, fixing portions, and stop portions arranged sequentially along the axial direction. The terminals are divided into two groups and injection molded together with the two cores. The two cores, carrying terminals, are respectively inserted into two receiving slots in the frame-shaped plastic shell. The iron shell surrounds the outer periphery of the frame-shaped plastic shell. The U-shaped metal spacer is placed inside the frame-shaped plastic shell and located between the two tongue portions, forming an electrical connection with the iron shell. This utility model uses a frame-shaped plastic shell to insert the cores, and the cores and terminals are injection molded to form an assembly. The overall structure is stable and reliable, ensuring structural strength while improving assembly and mating accuracy, ensuring a stable communication connection. The two cores have identical structures, fewer parts, and a simpler structure, making assembly easier. It requires less stamping and plastic mold design, resulting in lower costs.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical connectors, especially a double-layer USB connector. Background Art

[0002] With the rapid development of computer hardware, the number of peripheral devices has been increasing day by day, such as mice, keyboards, printers, scanners, cameras, flash drives, MP3 players, mobile phones, digital cameras, external hard drives, external optical and floppy drives, etc. These devices usually rely on USB connectors to connect to computers.

[0003] USB is the abbreviation of Universal Serial BUS in English, and its Chinese abbreviation is "universal serial line". It is an external bus standard used to standardize the connection and communication between computers and external devices and is an interface technology applied in the PC field. Due to the advantages of plug-and-play and hot-plugging support for devices, flexible connection, and independent power supply of USB connectors, they are very widely used.

[0004] As an important type of electrical connector, double-layer USB connectors are widely used in computer hosts; existing double-layer USB connectors generally include an insulating frame, two USB connectors inserted and fixed in the insulating frame in an up-and-down distribution manner, and a metal shell installed on the periphery of the insulating frame; each USB connector consists of an insulating seat, terminals, and a shell. The double-layer USB connector with the above structure has many components, is relatively cumbersome to assemble, and requires the design of multiple sets of stamping and plastic molds, resulting in high costs and complex processes, which is not conducive to improving market competitiveness. Summary of the Invention

[0005] The purpose of the utility model is to provide a vertical double-layer USB connector, which optimizes the structure, is convenient for manufacturing and assembly, and has better practicability.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A vertical double-layer USB connector, which has:

[0008] A frame-shaped plastic shell, which has two parallel and spaced receiving grooves, and the two receiving grooves are of the same size and both penetrate the frame-shaped plastic shell in the first direction;

[0009] Two plastic cores, which are of the same shape and size, and each plastic core is provided with a tongue portion, a fixing portion, and a stop portion distributed axially in sequence;

[0010] Several terminals, which are divided into two groups and are respectively injection-molded together with the two plastic cores, and the terminals have a contact portion protruding from one side of the tongue portion and a welding leg extending from the stop portion;

[0011] The two rubber cores carrying terminals are respectively implanted into the two receiving slots of the frame-shaped plastic shell. The tongue portion protrudes in the first direction and is cantilevered, and the contact portions of the terminals on the two rubber cores protrude in opposite directions; the stop portion abuts at one end of the receiving slot; and

[0012] The iron shell is wrapped around the outer periphery of the frame-shaped plastic shell, and the iron shell has multiple first pressing spring arms and pins. The multiple first pressing spring arms protrude from multiple directions into two receiving grooves of the frame-shaped plastic shell. The first pressing spring arms are used to press against the external connectors inserted into the receiving grooves. The multiple pins extend from one end of the frame-shaped plastic shell along a first direction.

[0013] The U-shaped metal partition has two bottom plates that are symmetrically arranged vertically in a first direction. One side of each bottom plate is connected by a bent connecting part, so that the two bottom plates are spaced a certain distance apart vertically. The left and right sides of the bent connecting part extend to form hanging arms. The U-shaped metal partition is placed in a frame-shaped plastic shell and is located between two tongue parts. Each of the two bottom plates is provided with a second pressing spring arm, and the second pressing spring arms on the two bottom plates protrude towards the two tongue parts respectively. The second pressing spring arms are used to press against the external connector inserted into the receiving groove. The hanging arms are used to hang the iron shell to form electrical conductivity.

[0014] A further improvement in the above scheme is that there is a partition wall between the two receiving slots of the frame-shaped plastic shell. The thickness of the partition wall is consistent with the distance between the two bottom plates of the U-shaped metal partition, so that the two bottom plates are flat against the upper and lower sides of the partition wall.

[0015] The above solution is further provided with inwardly extending limiting feet on the inner side of the two base plates. The limiting feet are inserted into the pre-set recessed grooves on the fixing part of the corresponding glue core. The inner side of the base plate is controlled to be flat against the partition wall by the limiting feet being restricted in the recessed grooves.

[0016] The above solution is further described in that the tongue portion, fixing portion and stop portion on the rubber core form a gradually expanding multi-layer tower structure; the shape and size of the fixing portion match the receiving groove, and the axes of the tongue portion and the fixing portion are relatively misaligned.

[0017] A further improvement of the above solution is that the tongue portion is provided with a limiting groove that extends through the upper and lower sides of the tongue portion, and the limiting groove satisfies the accommodating and protruding contact portion of the terminal.

[0018] A further aspect of the above solution is that the frame-shaped plastic shell is square, and the outer side of the partition wall is recessed relative to the corresponding end of the frame-shaped plastic shell. The recessed distance is exactly the thickness of the bent connection part of the U-shaped partition metal piece, so that after the U-shaped partition metal piece is assembled, the outer side of the bent connection part is flush with the corresponding end face of the frame-shaped plastic shell.

[0019] The above solution is further described in that the hanging arm of the U-shaped partition metal piece is close to the outer side of the iron shell, and the hanging arm is provided with a buckle hole, while the outer side of the iron shell is provided with a corresponding first protrusion. The U-shaped partition metal piece is prevented from coming out by fastening the buckle hole and the first protrusion.

[0020] The above-mentioned solution is further described in that the iron shell has four prongs, which are distributed at the four corners of the corresponding ends of the iron shell, and the prongs are of an upright structure.

[0021] The above scheme is further described as follows: there are eight terminals, with four terminals in each group arranged in a row.

[0022] The above solution further includes a hook and a buckle hole on the iron shell. The hook is positioned opposite to the prong and away from it, while the buckle hole is located on the side wall of the iron shell. The hook bends inward to hook onto the corresponding end of the frame-shaped plastic shell, and the buckle hole is engaged with the second protrusion on the corresponding outer side wall of the frame-shaped plastic shell. Through the hook engagement and buckle hole engagement, the connection between the iron shell and the frame-shaped plastic shell is limited in the first direction.

[0023] This utility model employs a frame-shaped plastic shell with an embedded core, the core and terminals injection molded to form an assembly, and an iron shell encasing the outer periphery of the frame-shaped plastic shell. A U-shaped metal spacer is inserted into the frame-shaped plastic shell and communicates with the iron shell to establish insertion and removal capabilities; thereby achieving the following beneficial effects:

[0024] 1. The overall structure is stable and reliable, ensuring structural strength while improving assembly and mating accuracy, thus ensuring a stable communication connection.

[0025] 2. The two cores have the same structure, fewer parts, and a simpler structure, making assembly easier. It requires less stamping and plastic mold design, resulting in lower costs and simpler processes, which helps improve market competitiveness. Attached Figure Description

[0026] Appendix Figure 1 This is a schematic diagram of a preferred embodiment of the present invention;

[0027] Appendix Figure 2 for Figure 1 Schematic diagram of the structural breakdown of the embodiment;

[0028] Appendix Figure 3 for Figure 1 Internal structural cross-sectional view of the embodiment;

[0029] Appendix Figure 4 for Figure 1 A schematic diagram of the U-shaped metal partition and the rubber core in the embodiment. Detailed Implementation

[0030] The following will further explain the concept, specific structure and technical effects of the utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the utility model.

[0031] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These terms are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] See Figure 1 , 2 Figures 3 and 4 show schematic diagrams of a preferred embodiment of the present invention. The present invention relates to an upright double-layer USB connector, which has: a frame-shaped plastic shell 1, two plastic cores 2, several terminals 3, an iron shell 4, and a U-shaped metal partition 5.

[0033] The frame-shaped plastic shell 1 has two parallel and spaced receiving grooves 11. The two receiving grooves are the same size and both penetrate the frame-shaped plastic shell 1 in a first direction. A partition wall 12 is provided between the two receiving grooves, and corresponding clearance holes 14 are pre-set on the peripheral wall of the receiving groove 11. The two plastic cores 2 are the same shape and size, and each plastic core is provided with a tongue portion 21, a fixing portion 22, and a stop portion 23 distributed sequentially along the axial direction. The plurality of terminals 3 are divided into two groups and respectively injection molded together with the two plastic cores 2. The terminals 3 have a contact portion 31 protruding from one side of the tongue portion 21 and a welding foot 32 extending from the stop portion 23. In this embodiment, there are eight terminals 3, with four terminals in each group arranged in a row. The structure is simple and convenient for manufacturing and assembly. The two rubber cores 2, each carrying a terminal 3, are respectively inserted into the two receiving slots 11 of the frame-shaped plastic shell. The tongue portion 21 protrudes in the first direction and is cantilevered. The contact portions 31 of the terminals on the two rubber cores 2 protrude in opposite directions, forming a back-to-back pattern. This satisfies scenarios with specific requirements for insertion and removal directions, while effectively reducing the interface height and volume. The stop portion 23 abuts at one end of the receiving slot 11 to determine the insertion depth of the rubber core 2. In this embodiment, the shape and size of the fixing portion 22 match the receiving slot 11, achieving a tight fit between the fixing portion 22 and the receiving slot 11. An anti-retraction latch is added between the fixing portion 22 and the receiving slot 11, thereby improving assembly stability and accuracy. The metal shell 4 encloses the outer periphery of the frame-shaped plastic shell 1, and the metal shell 4 has multiple first pressing spring arms 41 and pins 42. The multiple first pressing spring arms 41 protrude from multiple directions through corresponding clearance holes 14 into the two receiving grooves 11 of the frame-shaped plastic shell. The first pressing spring arms 41 are used to press against the external connector inserted into the receiving groove 11. The multiple pins 42 extend from one end of the frame-shaped plastic shell 1 along a first direction. The multiple pins 42 extend in the same direction as the welding pins 32 of the terminal, so that they can be welded together on the plate for easy assembly. In this embodiment, the metal shell 4 has four pins 42, and the four pins 42 are distributed at the four corners of the corresponding ends of the metal shell. The pins 42 have an upright structure. Compared with the traditional two-pronged clamping plate structure, the four pins 42 of this utility model are fixedly welded together, increasing the assembly stability of the connector.

[0034] The U-shaped metal partition 5 has two bottom plates 51 that are symmetrically arranged vertically in a first direction. One side of the two bottom plates 51 is connected together by a bent connecting part 52, so that the two bottom plates 51 are spaced a certain distance apart vertically. The left and right sides of the bent connecting part 52 extend to form hanging arms 53. The U-shaped metal partition 5 is placed in a frame-shaped plastic shell and is located between two tongue parts 21. Each of the two bottom plates 51 is provided with a second pressing spring arm 511, and the second pressing spring arm 511 on the two bottom plates 51 protrudes towards the two tongue parts 21 respectively. The second pressing spring arm 511 is used to press against the external connector inserted into the receiving groove 11. The hanging arm 53 is used to hang the iron shell 4 to form electrical conductivity, improve the overall structure and grounding effect.

[0035] Furthermore, the frame-shaped plastic shell 1 is square, and the thickness of the partition wall 12 between the two receiving slots is consistent with the distance between the two base plates 51 of the U-shaped central metal part, so that the two base plates 51 are flat against the upper and lower sides of the partition wall 12. Further still, the outer side of the partition wall 12 is recessed relative to the corresponding end of the frame-shaped plastic shell 1, and the recessed distance is exactly the thickness of the bent connecting part 52 of the U-shaped central metal part. This ensures that after the U-shaped central metal part is assembled, the outer side of the bent connecting part 52 is flush with the corresponding end face of the frame-shaped plastic shell 1, which not only improves the tightness of the product structure but also facilitates insertion and use. The hanging arm 53 of the U-shaped central metal part is tightly attached to the outer side of the iron shell 4, increasing the conductivity and tightness of the connection. The hanging arm 53 is provided with a buckle hole 531, and the outer side of the iron shell 4 is provided with a corresponding first protrusion 43. The buckle hole 531 and the first protrusion 43 are fastened together to prevent the U-shaped central metal part from coming out. The structure is simple and easy to assemble. Furthermore, the inner sides of the two base plates 51 are provided with inwardly extending limiting feet 512. These limiting feet 512 are inserted into the pre-set recessed grooves 221 on the fixing part 22 of the corresponding glue core. By restricting the limiting feet 512 in the recessed grooves 221, the inner sides of the base plates 51 are controlled to be flat against the partition wall 12, preventing the inner sides of the base plates 51 from lifting up and ensuring the product can be inserted and removed. In this embodiment, the recessed grooves 221 are partial glue-deficient structures of the fixing part 22, which just meet the needs of the limiting feet 512. When the glue core is assembled, the fixing part 22 and the inner wall of the receiving groove tightly clamp the limiting feet 512, achieving a tight assembly relationship.

[0036] The tongue portion 21, fixing portion 22, and stop portion 23 on the core form a gradually expanding multi-layered tower structure with overall structural stability. The axes of the tongue portion 21 and the fixing portion 22 are relatively misaligned to facilitate assembly into the receiving groove. The tongue portion 21 has a certain offset relative to the receiving groove to meet specific requirements for insertion and removal directions. The tongue portion 21 is provided with a limiting groove 211 that extends through the upper and lower sides of the tongue portion. This limiting groove 211 accommodates and protrudes the contact portion 31 of the terminal. This limiting groove 211 design increases clearance and limits, preventing deformation of the terminal under external force during insertion and improving service life.

[0037] In this embodiment, the iron shell 4 is also provided with hooks 44 and buckle holes 45. The hooks 44 are set away from the pins and are staggered vertically at the corresponding ends of the iron shell 4. The buckle holes 45 are opened on the left and right side walls of the iron shell 4 and are symmetrically arranged. The hooks 44 are bent inward to hook the corresponding ends of the frame-shaped plastic shell 1, and the buckle holes 45 are fastened to the second protrusion 13 on the corresponding outer side wall of the frame-shaped plastic shell 1. Through the hooks and buckle holes, the connection between the iron shell and the frame-shaped plastic shell is limited in the first direction, and the assembly structure is more stable.

[0038] This invention employs a frame-shaped plastic shell with an embedded rubber core. The rubber core and terminal are injection molded to form an assembly. An iron shell encloses the outer periphery of the frame-shaped plastic shell, and a U-shaped metal partition is inserted into the frame-shaped plastic shell and communicates with the iron shell to establish insertion and removal capabilities. The overall structure is stable and reliable, ensuring structural strength while improving assembly and mating accuracy, ensuring a stable communication connection. The two rubber cores have identical structures, fewer parts, and a simpler structure, making assembly easier. It requires less stamping and plastic mold design, resulting in lower costs and simpler processes, thus enhancing market competitiveness.

[0039] While the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention should not be limited to the same structure and operation as described above and the accompanying drawings. For those skilled in the art, many equivalent improvements and variations can be made to the above embodiments through logical analysis, reasoning or limited experiments without exceeding the concept and scope of the present invention, but these improvements and variations should all fall within the scope of protection claimed by the present invention.

Claims

1. A vertical double-layer USB connector, characterized in that, have: A frame-shaped plastic shell (1) has two parallel and spaced receiving slots (11), the two receiving slots being the same size and both penetrating the frame-shaped plastic shell (1) in a first direction. Two rubber cores (2) are identical in shape and size, and each rubber core is provided with a tongue part (21), a fixing part (22) and a stop part (23) distributed sequentially along the axial direction. Several terminals (3) are divided into two groups and respectively injection molded together with two plastic cores (2), and the terminals (3) have a contact portion (31) protruding from one side of the tongue portion (21) and a welding foot (32) extending from the stop portion (23). The two rubber cores (2) carrying terminals (3) are respectively implanted into the two receiving slots (11) of the frame-shaped plastic shell. The tongue portion (21) protrudes in the first direction and is cantilevered, and the contact portions (31) of the terminals on the two rubber cores (2) protrude in opposite directions; the stop portion (23) stops at one end of the receiving slot (11); and The iron shell (4) is wrapped around the outer periphery of the frame-shaped plastic shell (1), and the iron shell (4) has a plurality of first pressing spring arms (41) and pins (42). The plurality of first pressing spring arms (41) protrude from multiple directions into the two receiving grooves (11) of the frame-shaped plastic shell. The first pressing spring arms (41) are used to press against the external connectors inserted into the receiving grooves (11). The plurality of pins (42) extend from one end of the frame-shaped plastic shell (1) along a first direction. The U-shaped metal partition (5) has two bottom plates (51) that are symmetrical in the first direction. One side of the two bottom plates (51) is connected together by a bending connection (52) so that the two bottom plates (51) are spaced a certain distance apart. The left and right sides of the bending connection (52) extend to form hanging arms (53). The U-shaped metal partition (5) is placed in a frame-shaped plastic shell and located between two tongue parts (21). The two bottom plates (51) are each provided with a second pressing spring arm (511), and the second pressing spring arm (511) on the two bottom plates (51) protrudes towards the two tongue parts (21). The second pressing spring arm (511) is used to press against the external connector inserted into the receiving groove (11). The hanging arm (53) is used to hang the iron shell (4) to form electrical conduction.

2. The upright dual-layer USB connector according to claim 1, characterized in that, The frame-shaped plastic shell (1) has a partition wall (12) between the two receiving slots. The thickness of the partition wall (12) is consistent with the distance between the two bottom plates (51) of the U-shaped partition metal piece, so that the two bottom plates (51) are flat against the upper and lower sides of the partition wall (12).

3. The upright dual-layer USB connector according to claim 2, characterized in that, The inner sides of the two base plates (51) are provided with inwardly extending limiting feet (512). The limiting feet (512) are inserted into the pre-set recessed grooves (221) on the fixing part (22) of the corresponding glue core. The inner sides of the base plates (51) are controlled to be flat against the partition wall (12) by the limiting feet (512) being restricted in the recessed grooves (221).

4. The upright dual-layer USB connector according to claim 1, characterized in that, The tongue portion (21), the fixing portion (22) and the stop portion (23) on the core form a gradually expanding multi-layer tower structure; the shape and size of the fixing portion (22) match the receiving groove (11), and the axes of the tongue portion (21) and the fixing portion (22) are relatively misaligned.

5. The upright dual-layer USB connector according to claim 1 or 4, characterized in that, The tongue portion (21) is provided with a limiting groove (211) that runs through the upper and lower sides of the tongue portion. The limiting groove (211) satisfies the accommodating and protruding contact portion (31) of the terminal.

6. The upright dual-layer USB connector according to claim 2, characterized in that, The frame-shaped plastic shell (1) is square. The outer side of the partition wall (12) is recessed relative to the corresponding end of the frame-shaped plastic shell (1), and the recessed distance is exactly the thickness of the bent connection part (52) of the U-shaped partition metal piece, so that after the U-shaped partition metal piece is assembled, the outer side of the bent connection part (52) is flush with the corresponding end face of the frame-shaped plastic shell (1).

7. The upright dual-layer USB connector according to claim 1, characterized in that, The hanging arm (53) of the U-shaped partition metal piece is close to the outer side of the iron shell (4), and the hanging arm (53) is provided with a buckle hole (531). The outer side of the iron shell (4) is provided with a corresponding first protrusion (43). The U-shaped partition metal piece is prevented from coming out by fastening the buckle hole (531) and the first protrusion (43).

8. The upright dual-layer USB connector according to claim 1, characterized in that, The iron shell (4) has four pins (42), and the four pins (42) are distributed at the four corners of the corresponding ends of the iron shell. The pins (42) are vertical structures.

9. The upright dual-layer USB connector according to claim 1, characterized in that, There are eight terminals (3), with four terminals in each group arranged in a row.

10. The upright dual-layer USB connector according to claim 1 or 8, characterized in that, The iron shell (4) is also provided with a hook (44) and a buckle hole (45). The hook (44) is set away from the pin and the buckle hole (45) is opened on the side wall of the iron shell (4). The hook (44) is bent inward to hang on the corresponding end of the frame-shaped plastic shell (1), and the buckle hole (45) is fastened to the second protrusion (13) on the corresponding outer side wall of the frame-shaped plastic shell (1). Through the hook and buckle, the connection between the iron shell and the frame-shaped plastic shell is limited in the first direction.

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