A sink plate USB of L foot

Abstract

The utility model discloses a kind of sinking plate USB of L foot, it is related to sinking plate USB technical field, shell, limiting buckle, fixed claw, bending foot and fixed groove, the inner side of shell upper side is provided with wiring structure, the wiring structure includes fixed claw, contact terminal, contact wire and fixed groove, the contact terminal is embedded fixed groove position with shell snap-fit fixed by the fixed claw of side, and connection communication power supply is completed by contact wire, shell adopts SPCC bending forming, both sides are equipped with 90 ° L-shaped bending foot, cooperate with the L-shaped contact wire of contact terminal to form front insertion and rear sticking and sinking plate structure, realize 90 ° sinking type installation, so that connector is embedded PCB board surface flush or slightly lower, overall height is compressed to adapt to ultra-thin equipment, limiting buckle on the upper and lower surfaces of shell cooperates with PCB positioning hole, ensure installation accuracy;Contact terminal is embedded shell fixed groove by conical fixed claw, form mechanical buckle connection, improve assembly reliability.

Description

Technical Field

[0001] This utility model relates to the field of recessed USB technology, specifically to a recessed USB with an L-pin. Background Technology

[0002] Recessed USB connectors are USB connectors that achieve low installation height and adapt to ultra-thin devices through optimized structural design. Their core feature is embedding into the PCB surface via a recessed structure, reducing overall space occupation. However, existing recessed USB connectors have some shortcomings, such as:

[0003] The recessed waterproof MICRO-USB connector described in application number CN201921508041.6 does not clearly explain its advantages in solving the problems of large installation height and adapting to ultra-thin devices. It may not be able to effectively reduce the overall height and is not suitable for smart wearable devices with strict space requirements. In terms of manufacturing process, it does not mention whether it supports automated assembly and its role in improving production efficiency, which is insufficient for large-scale industrial production. Utility Model Content

[0004] The purpose of this utility model is to provide an L-shaped recessed USB to address the problems mentioned in the background art, such as the lack of clear explanation of its advantages in solving the problems of large installation height and adapting to ultra-thin devices, the inability to effectively reduce the overall height, the unsuitability for smart wearable devices with strict space requirements, the lack of mention of whether it supports automated assembly and its role in improving production efficiency, and the insufficient efficiency in large-scale industrial production.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a recessed USB with an L-shaped foot, comprising a shell, a limiting buckle, a fixing claw, a bent foot, and a fixing groove;

[0006] A wiring structure is provided on the inner side of the upper part of the housing. The wiring structure includes a fixing claw, a contact terminal, a contact wire, and a fixing groove. The contact terminal is fixed to the housing by the fixing claw on the side being inserted into the fixing groove, and communication and power supply are completed through the contact wire.

[0007] As a preferred technical solution of this utility model, the outer shell is formed by SPCC bending.

[0008] The above technical solution is used to bond with PCB pads to enhance welding strength and absorb and disperse insertion and extraction stress.

[0009] As a preferred technical solution of this utility model, the outer shell is fixedly connected to both sides with bent feet, and the bending angle of the bent feet is 90°;

[0010] By adopting the above technical solution, the bent feet of the shell and the L-shaped contact wires of the contact terminals cooperate to form a recessed plate structure with front insertion and rear mounting, realizing 90° recessed installation. This allows the connector to be embedded flush with or slightly below the surface of the PCB board, effectively solving the problem of large installation height of recessed USB in the existing technology, which cannot be adapted to ultra-thin devices. It is particularly suitable for space-sensitive scenarios such as smart wearable devices and industrial control modules.

[0011] As a preferred technical solution of this utility model, the contact terminal is fixedly connected inside the housing, the contact terminal is made of high-temperature molten plastic, and four wiring grooves are evenly opened on the lower surface of the contact terminal;

[0012] Using the above technical solution, the contact terminals are made of LCP material, whose high temperature resistance is suitable for SMT reflow soldering process, avoiding the terminal displacement problem caused by high temperature deformation of traditional plastics.

[0013] As a preferred technical solution of this utility model, a fixed contact wire is embedded below the contact terminal, and the contact wire is made of copper alloy with gold plating on the surface;

[0014] By adopting the above technical solution, the service life of the connector is effectively extended, its reliability is enhanced in high-frequency plugging and unplugging, vibration or shock environments, and equipment maintenance costs are reduced.

[0015] As a preferred technical solution of this utility model, the fixing claw is fixedly connected to both sides of the contact terminal, the outer end of the fixing claw is a tapered structure, the fixing claw is engaged and fixed with the outer shell through the fixing groove, and the fixing claw is perpendicular to the side of the outer shell after being bent.

[0016] Using the above technical solution, the contact terminal is embedded into the fixing groove of the outer shell through a fixing claw with a tapered structure at the outer end. After bending, it is perpendicular to the side of the outer shell to form a mechanical snap-fit ​​connection, which facilitates quick positioning during automated assembly. At the same time, it improves the resistance to insertion and removal pull force, avoids poor contact caused by deformation or loosening of terminals in traditional injection molding processes, and enhances the firmness of the connection between the contact terminal and the outer shell.

[0017] As a preferred embodiment of this utility model, limiting buckles are provided on both the upper and lower surfaces of the outer shell, and the protrusions of the limiting buckles are inward and symmetrically distributed.

[0018] The above technical solution employs full surface mount technology (SMT) soldering and supports automated reflow soldering assembly. Compared with traditional manual insertion processes, it significantly improves insertion efficiency, reduces labor costs, and solves the problems of existing plug-in recessed USB boards that rely on manual operation and have unstable yield rates. At the same time, structural optimization achieves a significant reduction in installation height, comprehensively enhancing the product's competitiveness in terms of production efficiency and compatibility with ultra-thin equipment.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. The outer shell is made of SPCC bending and has 90° L-shaped bending feet on both sides. These feet cooperate with the L-shaped contact wires of the contact terminals to form a front-insertion and rear-attachment recessed plate structure, enabling 90° recessed installation. This allows the connector to be embedded flush with or slightly lower than the PCB board surface, compressing the overall height to accommodate ultra-thin devices. The limiting buckles on the upper and lower surfaces of the outer shell cooperate with the PCB positioning holes to ensure installation accuracy. The contact terminals are embedded into the fixing grooves of the outer shell through tapered fixing claws, forming a mechanical snap-fit ​​connection and improving assembly reliability.

[0021] 2. The contact terminals are made of high-temperature molten plastic, which is suitable for SMT process and avoids the high-temperature deformation of traditional materials; the contact wire is a copper alloy L-shaped cantilever beam structure with gold plating. It provides self-compensating contact pressure through elastic deformation, disperses insertion and extraction stress and reduces the risk of breakage, enhances contact stability and signal transmission reliability, and the shell bending feet mechanically engage with PCB pads to absorb impact stress and improve extreme environment resistance.

[0022] 3. It adopts full surface mount technology (SMT) process and supports automated reflow soldering assembly, which solves the problems of traditional plug-in process relying on manual labor and low efficiency. The structural design is compatible with automated production lines. It achieves precise positioning through components such as limit buckles and fixing claws, avoids manual alignment errors, improves production efficiency and product consistency, and is suitable for large-scale industrial production. Attached Figure Description

[0023] Figure 1 This is a side view of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the outer shell and the limiting buckle structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the contact terminal and contact wire structure of this utility model;

[0026] Figure 4 This is a front view structural diagram of the present invention;

[0027] Figure 5 This is a schematic diagram of the fixed claw and bent foot structure of this utility model;

[0028] Figure 6 This is a schematic diagram of the limiting buckle and fixing groove structure of this utility model.

[0029] In the diagram: 1. Outer shell; 2. Limiting buckle; 3. Fixing claw; 4. Bending foot; 5. Contact terminal; 6. Contact wire; 7. Fixing groove. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-6 The present invention provides a recessed USB port with an L-shaped lead, comprising a housing 1, a limiting buckle 2, a fixing claw 3, a bent lead 4, a contact terminal 5, a contact wire 6, and a fixing groove 7.

[0032] In terms of structural design, the outer shell 1 is formed by SPCC bending. The 90° bent feet on both sides cooperate with the L-shaped contact wires 6 of the contact terminals 5 to form a front insertion and rear placement sub-sinking structure, which realizes 90° sinking installation and ensures that the connector is embedded in the PCB board surface flush with or slightly below the surface. This effectively solves the problem of large installation height of traditional sinking USB. It is suitable for space-sensitive scenarios such as smart wearable devices and industrial control modules. The inwardly protruding limiting buckles 2 symmetrically distributed on the upper and lower surfaces of the outer shell 1 support the full surface mount technology (SMT) process reflow soldering automated assembly, which significantly improves insertion efficiency and reduces labor costs.

[0033] In terms of material selection, contact terminal 5 is made of LCP high-temperature molten plastic, whose high temperature resistance is suitable for SMT reflow soldering process of 240-260℃, avoiding terminal displacement caused by high temperature deformation; contact wire 6 is made of copper alloy and gold-plated on the surface, which effectively improves the reliability of the connector in high-frequency plugging and unplugging, vibration or shock environment and extends service life.

[0034] In terms of technological advantages, the contact terminal 5 is embedded into the fixing groove 7 of the outer shell 1 through the fixing claw 3 of the outer tapered structure. After bending, the vertical side forms a mechanical snap connection, which facilitates rapid positioning in automated assembly and enhances resistance to insertion and removal. In the wiring structure, each component is connected through the cooperation of the fixing claw 3 and the fixing groove 7 and the contact wire 6, so as to achieve a firm mechanical connection and stable communication power supply, and comprehensively improve the product's overall competitiveness in terms of compatibility with ultra-thin equipment and production efficiency.

[0035] Working principle: When using an L-pin recessed USB connector, the outer shell 1 is formed by SPCC bending. The 90° bent feet 4 on both sides and the L-shaped contact wires 6 of the contact terminals 5 form a "front insertion and rear mounting" recessed structure. During installation, the bent feet 4 are inserted into the holes on the PCB board, and the contact wires 6 are soldered to the PCB pads, realizing a 90° recessed installation. This allows the connector to be embedded flush with or slightly lower than the surface of the PCB board. The limiting buckles 2, which are symmetrically distributed inward on the upper and lower surfaces of the outer shell 1, cooperate with the PCB positioning holes to accurately position the connector during SMT reflow soldering, improving installation accuracy and mechanical stability.

[0036] The contact terminal 5 is made of LCP high-temperature molten plastic, with a copper alloy contact wire 6 embedded inside. The contact wire 6 contacts the external equipment through the elastic deformation of the L-shaped cantilever beam structure, providing self-compensating contact pressure to ensure stable electrical connection. One end of the contact wire 6 is soldered to the PCB pad, and the other end is fixed to the wiring groove of the contact terminal 5 through the fixing claw 3, forming a signal and power transmission path. The gold plating layer reduces contact resistance and improves corrosion resistance.

[0037] The SPCC material of the housing 1 absorbs insertion and extraction stress through bending and forming. The L-shaped structure of the contact wire 6 disperses stress through elastic deformation, reducing the risk of breakage. The outer ends of the fixing claws 3 on both sides of the contact terminal 5 are tapered structures, which are embedded in the fixing groove 7 of the housing 1 and bent perpendicular to the side to form a mechanical snap-fit ​​connection, improving the resistance to insertion and extraction pull force. The LCP material of the contact terminal 5 is suitable for SMT reflow soldering process of 240-260℃, avoiding high temperature deformation that causes terminal displacement.

[0038] Employing a full surface mount technology (SMT) process, the contact terminal 5 and the housing 1 are automatically and precisely positioned by the cooperation of the limit buckle 2 with the PCB positioning hole, the fixing claw 3 with the fixing groove 7, and the reflow soldering mass production. Compared with traditional manual insertion, this process significantly improves assembly efficiency and reduces labor costs. At the same time, the installation height is reduced through structural optimization to meet the integration needs of ultra-thin scenarios such as smart wearable devices and industrial control modules.

[0039] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this utility model are within the protection scope of this utility model.

Claims

1. A recessed USB with an L-pin, comprising a housing (1); characterized in that: A wiring structure is provided on the inner side of the upper part of the outer shell (1). The wiring structure includes a fixing claw (3), a contact terminal (5), a contact wire (6), and a fixing groove (7). The contact terminal (5) is engaged and fixed with the outer shell (1) by the fixing claw (3) on the side and the contact wire (6) is used to complete the connection for communication and power supply.

2. The L-pin recessed USB according to claim 1, characterized in that, The outer shell (1) is formed by SPCC bending.

3. A recessed USB with an L-pin according to claim 2, characterized in that, The outer shell (1) is fixedly connected to two sides with bent feet (4), and the bending angle of the bent feet (4) is 90°.

4. A recessed USB with an L-pin according to claim 3, characterized in that, The contact terminal (5) is fixedly connected inside the housing (1). The contact terminal (5) is made of high-temperature molten plastic, and four wiring grooves are evenly opened on the lower surface of the contact terminal (5).

5. A recessed USB port with an L-shaped pin according to claim 4, characterized in that, The contact terminal (5) is embedded with a fixed contact wire (6) below it. The contact wire (6) is made of copper alloy with gold plating on the surface.

6. A recessed USB with an L-pin according to claim 5, characterized in that, The fixing claw (3) is fixedly connected to both sides of the contact terminal (5). The outer end of the fixing claw (3) is a tapered structure. The fixing claw (3) is engaged and fixed with the outer shell (1) through the fixing groove (7). After bending, the fixing claw (3) is perpendicular to the side of the outer shell (1).

7. A recessed USB with an L-pin according to claim 6, characterized in that, The outer shell (1) has limiting buckles (2) on both the upper and lower surfaces. The limiting buckles (2) protrude inward and are symmetrically distributed.

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