Double-sided pluggable USB TYPE A connector

Abstract

The utility model relates to the technical field of connectors, in particular to a double-sided pluggable USB TYPE A connector, which comprises a circuit board, a shell, a first rubber core and a second rubber core, and is characterized in that the front end of the circuit board is provided with a dip angle inclined plane and is widened to form a limiting plate edge; the two sides of the tail end of the circuit board are narrowed to form avoiding, and meanwhile a double-groove stamp hole is formed. Limiting notches are formed in the front end of the shell and correspond to the edges of the limiting plate, and the limiting notches are symmetrically distributed at the front end of the shell. The first rubber core and the second rubber core are provided with inclined slopes, the circuit board is matched with the first rubber core and the second rubber core to be inserted and assembled from the front end of the shell, the limiting notch and the limiting plate edge of the circuit board form an up-and-down limiting structure, and the rubber core part adopts the slope optimization design, so that the length of a force arm of the circuit board is effectively shortened; therefore, the risk of damage caused by bending or extrusion of the circuit board is greatly reduced. And the front end of the circuit board is polished into a small-angle inclined surface, so that the abrasion in the plugging process is obviously reduced, and the service life of the product is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a double-sided pluggable USB TYPE A connector. Background Technology

[0002] With the rapid development of electronic technology, the demand for data transmission and charging interfaces is becoming increasingly diversified. Among them, the USB Type-C connector, with its reversible plug-in feature, has brought a revolutionary user experience. This design not only improves ease of use but also further promotes the unification of electronic device interface standards. However, despite the significant achievements of USB Type-C connectors in technological innovation, USB Type-A connectors still occupy an important position in the market due to their wide application base, high ubiquity, simple plug-in operation, and relatively low cost. They form a good complementary relationship with USB Type-C connectors, jointly serving different application scenarios.

[0003] While traditional USB Type-A connectors lack the reversible plug-in advantage of USB Type-C, the industry has been exploring technological innovations to overcome this deficiency. One tentative solution involves using a double-sided circuit design on the circuit board, combined with the characteristics of gold fingers, to achieve similar reversible plug-in functionality while maintaining high cost-effectiveness. However, this solution has revealed a series of problems in practical applications, limiting its potential for large-scale adoption:

[0004] Circuit board deformation issue: Although circuit boards are designed with a certain level of strength and flexibility, they can still deform during frequent insertion and removal, and may not fully return to their original shape. This deformation not only affects the smoothness of insertion and removal but may also threaten the stability and security of data transmission.

[0005] Limited elasticity and risk of breakage: The circuit board is fixed by the adhesive core, which also serves to limit the insertion and extraction depth. This limits the effective length of the circuit board and the lever arm distance, thus restricting its elastic performance. In extreme cases, there is even a risk of circuit board breakage.

[0006] Insertion and extraction force and poor contact: Due to the lack of effective upper and lower limit design at the front end of the circuit board, when subjected to excessive or irregular insertion and extraction force, the circuit board may deform excessively, resulting in a decrease in insertion and extraction force, which in turn affects the stability and conductivity of the contact points, causing poor contact.

[0007] Soldering quality issues: Although the ticket hole pads designed at the tail are convenient for manual soldering and automatic placement, in actual production, due to factors such as poor soldering, it may lead to quality problems such as cold solder joints and floating, which will affect the reliability and durability of the product.

[0008] Reduced circuit board strength: The positioning holes and side stamping grooves on the circuit board, while helpful for positioning and fixing, also weaken the overall strength of the circuit board and increase the risk of breakage.

[0009] In conclusion, despite numerous innovative attempts by the industry to achieve reversible plugging functionality for USB Type A connectors, existing solutions still face many technical bottlenecks and practical problems, requiring further research and improvement. Utility Model Content

[0010] To overcome the shortcomings of the prior art, this application provides a double-sided pluggable USB TYPE A connector, which aims to solve the technical defects of double-sided pluggable connectors and help promote the application of such connectors.

[0011] The technical means adopted by this utility model to solve its technical problem is: a double-sided pluggable USB TYPE A connector, the improvement of which is that it includes a circuit board, a shell, a first rubber core and a second rubber core, wherein the front end of the circuit board is provided with an inclined slope and widened to form a limiting plate edge; the rear end of the circuit board is narrowed on both sides to form a clearance, and is provided with a double-groove stamp hole; the front end of the shell is provided with a limiting notch corresponding to the limiting plate edge, and the limiting notch is symmetrically distributed on the front end of the shell; the first rubber core and the second rubber core are provided with inclined slopes, and the circuit board is inserted and assembled from the front end of the shell with the first rubber core and the second rubber core, and the limiting notch and the limiting plate edge of the circuit board form an upper and lower limiting structure.

[0012] The circuit board described in the above technical solution is provided with a first positioning hole and a second positioning hole. Both the first positioning hole and the second positioning hole are circular, and the diameter of the second positioning hole is 1.5-3 times the diameter of the first positioning hole.

[0013] The circuit board described in the above technical solution has a stamping groove on its side, and the stamping groove is staggered with the first positioning hole and the second positioning hole.

[0014] The above technical solution describes an elliptical solder hole at the tail end of the housing. The ratio of the major axis to the minor axis of the elliptical solder hole is between 1.2 and 1.8 to accommodate the soldering of circuit boards of various thicknesses in the application.

[0015] In the above technical solution, the angle between the front end of the circuit board and the horizontal plane is 5°-15°, and the angles of the first and second glue cores match the angles of the circuit board.

[0016] In the above technical solution, the first and second cores are made of silicone or rubber materials with excellent elasticity and wear resistance.

[0017] The outer surface of the outer casing described in the above technical solution is provided with anti-slip texture or anti-slip protrusions.

[0018] In the above technical solution, the inclined surfaces of the first and second cores are also provided with anti-slip textures to increase friction during insertion and removal and prevent the connector from accidentally falling off.

[0019] The beneficial effects of this utility model are:

[0020] 1. The design of dual-slot stamp hole pads is introduced, and a solder through hole is cleverly added on this basis. This effectively widens the solder crawling area, significantly improves the soldering yield and adhesion strength, and provides an innovative solution to the soldering problem in the field of automated placement connectors.

[0021] 2. The front-end structure is equipped with upper and lower limit devices. This design can precisely control the degree of deformation of the circuit board, thereby enhancing the friction and contact stability during the insertion and removal process and ensuring the reliability of the connection.

[0022] 3. The core part adopts an optimized bevel design, which effectively shortens the length of the circuit board lever arm, thereby greatly reducing the risk of damage caused by bending or squeezing of the circuit board and improving the overall durability.

[0023] 4. The front end of the circuit board is polished into a small-angle bevel, which not only improves the smoothness of the plugging and unplugging operation and the user experience, but also significantly reduces wear during the plugging and unplugging process and extends the service life of the product. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the structure of a double-sided pluggable USB TYPE A connector according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the outer shell structure shown in an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the circuit board structure shown in an embodiment of the present invention. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0029] like Figure 1-3 As shown, this application provides a reversible USB Type-A connector, including a circuit board 1, a housing 2, a first adhesive core 3, and a second adhesive core 4, wherein...

[0030] The front end of the circuit board 1 is provided with an inclined slope 11 and widened to form a limiting plate edge 12; the two sides of the rear end of the circuit board 1 are narrowed to form an avoidance 13, providing more space for the application end; at the same time, a double-groove stamp hole 14 is provided to increase the solder crawling space.

[0031] The front end of the outer shell 2 is provided with a limiting notch 21 corresponding to the edge of the limiting plate 12, and the limiting notch 21 is symmetrically distributed on the front end of the outer shell 2.

[0032] The first core 3 and the second core 4 are provided with inclined surfaces to provide space for extending the lever arm of the circuit board 1. The circuit board 1 is inserted and assembled from the front end of the outer shell 2 with the first core 3 and the second core 4. The limiting notch 21 and the limiting plate edge 12 of the circuit board 1 form an upper and lower limiting structure to improve the insertion and removal friction and contact, and reduce excessive deformation of the circuit board.

[0033] In one possible implementation, the angle between the front end inclined surface 11 of the circuit board 1 and the horizontal plane is 5°-15°, and the inclined surfaces of the first core 4 and the second core 5 match the inclined surface 11 of the circuit board 1, so as to facilitate the smooth insertion of the connector from the front end of the housing, reduce the resistance during insertion, improve the accuracy of insertion and removal, and reduce friction.

[0034] In one possible implementation, the circuit board 1 is further provided with a first positioning hole 15 and a second positioning hole 16. Both the first positioning hole 15 and the second positioning hole 16 are circular, and the diameter of the second positioning hole 16 is 1.5-3 times the diameter of the first positioning hole 15, so as to accommodate fasteners or positioning devices of different sizes; at the same time, it can also be used to prevent mistakenly and avoid short circuits between the circuit and the casing caused by the reverse side of the circuit board.

[0035] In one possible implementation, a stamping groove 17 is provided on the side of the circuit board 1. Optionally, the stamping groove 17 is rectangular or trapezoidal in shape and its depth does not exceed one-third of the thickness of the circuit board 1, so as to avoid affecting the overall strength and electrical performance of the circuit board 1. The stamping groove 17 is staggered with the first positioning hole 15 and the second positioning hole 16 to reduce the number of holes and slots on the same axis of the circuit board 1 and improve the strength of the circuit board 1.

[0036] In one possible implementation, the tail end of the housing 2 is provided with an elliptical solder hole 22, the ratio of the major axis to the minor axis of the elliptical solder hole 22 being between 1.2 and 1.8, so as to be compatible with the soldering of circuit boards of various thicknesses at the application end, while also improving the adhesion strength of the soldering.

[0037] In one possible implementation, the first core 4 and the second core 5 are made of silicone or rubber materials with excellent elasticity and wear resistance to ensure the stability and durability of the connector under long-term use.

[0038] In one possible implementation, the inclined surfaces of the first core 4 and the second core 5 are also provided with anti-slip textures to increase friction during insertion and removal and prevent the connector from accidentally falling off.

[0039] In one possible implementation, the outer surface of the housing 2 is provided with anti-slip texture or anti-slip protrusions to improve the stability and safety of the user's hand feel during insertion and removal operations.

[0040] Through the above embodiments, this utility model overcomes the technical shortcomings of existing double-sided pluggable connectors, which will greatly promote the popularization and application of such connectors in the market. At the same time, while ensuring the original economic efficiency, this solution makes full use of and follows mature existing materials and processes, aiming to achieve the optimal balance between cost-effectiveness and technological innovation. If the optimized connector can be applied on a large scale, it will strongly promote the development of related products and related technologies, especially in the field of industrial design (such as the optimization of appearance structure and functional layout).

[0041] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A double-sided pluggable USB Type A connector, characterized in that, Includes a circuit board, a casing, a first adhesive core, and a second adhesive core, wherein, The front end of the circuit board is provided with an inclined slope and widened to form a limiting plate edge; the two sides of the rear end of the circuit board are narrowed to form a clearance, and a double-groove stamp hole is provided at the same time. The front end of the outer shell is provided with a limiting notch corresponding to the edge of the limiting plate, and the limiting notch is symmetrically distributed on the front end of the outer shell. The first and second glue cores are provided with inclined surfaces. The circuit board is inserted and assembled from the front end of the outer shell in conjunction with the first and second glue cores. The limiting notch and the limiting plate edge of the circuit board form an upper and lower limiting structure.

2. The double-sided pluggable USB Type A connector according to claim 1, characterized in that, The circuit board is provided with a first positioning hole and a second positioning hole. Both the first positioning hole and the second positioning hole are circular, and the diameter of the second positioning hole is 1.5-3 times the diameter of the first positioning hole.

3. The double-sided pluggable USB Type A connector according to claim 2, characterized in that, The circuit board has a stamping groove on its side, and the stamping groove is staggered with the first positioning hole and the second positioning hole.

4. The double-sided pluggable USB Type A connector according to claim 1, characterized in that, The outer casing has an elliptical solder hole at its tail end. The ratio of the major axis to the minor axis of the elliptical solder hole is between 1.2 and 1.8 to accommodate the soldering of circuit boards of various thicknesses in the application.

5. The double-sided pluggable USB Type A connector according to claim 1, characterized in that, The angle between the inclined surface of the front end of the circuit board and the horizontal plane is 5°-15°, and the inclined surfaces of the first and second glue cores match the inclined surface of the circuit board.

6. The double-sided pluggable USB Type A connector according to claim 1, characterized in that, The first and second cores are made of silicone or rubber materials with excellent elasticity and wear resistance.

7. The double-sided pluggable USB Type A connector according to claim 1, characterized in that, The outer surface of the housing is provided with anti-slip texture or anti-slip protrusions.

8. The double-sided pluggable USB Type A connector according to claim 1, characterized in that, The inclined surfaces of the first and second cores are also provided with anti-slip textures to increase friction during insertion and removal and prevent the connector from accidentally falling off.

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