D-SUB female connector integrated with ESD protection

Abstract

The utility model relates to the technical field of connectors, in particular to a D-SUB female head connector integrated with ESD protection, which comprises a connector, an end body is fixedly connected inside the connector, one end inside the end body is fixedly connected with a mounting plate, a signal pin is fixedly connected inside the mounting plate, and the signal pin is fixedly connected with the connector. A plurality of grounding pins are arranged on one side of the mounting plate, one end of each grounding pin is connected with one end of a signal pin through a TVS diode, a metal shell is arranged on one side of the connector, and the metal shell serves as a first ESD protection barrier of the connector, so that external static electricity can be quickly guided into the ground, and meanwhile, the shielding effect on external electromagnetic interference is achieved; the grounding pin is connected with the signal pin through the TVS diode, and the TVS diode can clamp the high voltage generated by static electricity in a safety range in an extremely short time, thereby protecting the signal pin from being damaged by the static electricity, and effectively improving the ESD protection performance of the connector.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and more specifically, to a D-SUB female connector with integrated ESD protection. Background Technology

[0002] In today's digital age, electronic devices have permeated every aspect of life and work, from everyday consumer electronics to high-precision aerospace equipment, with the integration and complexity of electronic systems constantly increasing. D-SUB female connectors, with their reliable connection performance and excellent compatibility, have become crucial components for signal transmission and connection in electronic devices, widely used in computers, communications, industrial automation, and other fields. As a key interface for connecting electronic devices to external systems, D-SUB female connectors are highly susceptible to electrostatic discharge (ESD) intrusion during insertion / removal operations, human contact, or exposure to electrostatic environments, which can severely damage the connected electronic systems.

[0003] There are many existing technologies for D-SUB connectors, such as:

[0004] According to Chinese patent application number CN201920854537.2, specifically, a D-SUB connector assembly for preventing mis-mating is disclosed. This assembly includes a male connector, a female connector, and fastening screws. The male connector includes a male terminal extending in a left-right direction, and the female connector includes a female terminal extending in a left-right direction. An encoding frame is fitted around the outer side of one of the male and female terminals, while encoding elements are provided on the left and right sides of the other terminal. The encoding frame has terminal clearance holes for avoiding the terminal, fastening screw clearance holes located on the left and right sides of the through hole for avoiding the fastening screw, and encoding frame positioning holes arranged on the same side as the fastening screw clearance holes. The encoding elements have fastening screw clearance holes and encoding element positioning holes corresponding to the fastening screw clearance holes and encoding frame positioning holes on one side of the encoding frame. Some encoding frame positioning holes have positioning posts with shaft ends extending to the outside of the encoding frame, and encoding element positioning holes corresponding to encoding frame positioning holes without positioning posts have positioning posts with shaft ends extending to the outside of the encoding element. This utility model has a simple structure and low production cost.

[0005] In specialized applications such as industrial control and aerospace, electronic devices face extremely complex electromagnetic environments. Electromagnetic interference generated by ESD can severely impact signal transmission, leading to data transmission errors, signal distortion, and other problems, seriously threatening the reliability and safety of the equipment. Traditional D-SUB female connectors have many shortcomings in ESD protection, such as inadequate grounding design, poor shielding performance, and a lack of effective transient voltage suppression measures, making it difficult to meet the high standards of ESD protection required by modern electronic equipment. Utility Model Content

[0006] This invention addresses the technical problems existing in the prior art by providing a D-SUB female connector with integrated ESD protection, thus solving the shortcomings of traditional D-SUB female connectors in ESD protection, such as simple protection structure, poor grounding, and inability to effectively suppress high-frequency interference.

[0007] To achieve the above objectives, this utility model provides a D-SUB female connector with integrated ESD protection, including a connector head, an end body fixedly connected inside the connector head, a mounting plate fixedly connected to one end of the end body, signal pins fixedly connected inside the mounting plate, and multiple grounding pins provided on one side of the mounting plate. One end of each grounding pin is connected to one end of a signal pin through a TVS diode. A metal shell is provided on one side of the connector head, and fixing components are provided at both the top and bottom ends of one side of the connector head. The metal shell is mounted on one side of the connector head through the fixing components.

[0008] The beneficial effects of this utility model are:

[0009] 1. Before use, the metal housing of the connector can be quickly connected to the connector head through the fixing component, which improves the installation and disassembly efficiency of the metal housing, increases the convenience of using the connector, and facilitates the subsequent inspection and maintenance of the internal components of the connector.

[0010] 2. During use, the connector can quickly conduct external static electricity to the ground, while also shielding against external electromagnetic interference. It rapidly discharges static electricity, preventing damage to the internal circuitry and connected electronic equipment caused by static accumulation, suppressing high-frequency electromagnetic interference generated by ESD, and ensuring the accuracy and stability of signal transmission.

[0011] Based on the above technical solution, the present invention can be further improved as follows.

[0012] Preferably, a shielding layer is provided on the outside of the signal pin, the shielding layer is made of copper foil, and the shielding layer is soldered to the other side of the mounting plate.

[0013] The advantages of adopting the above-mentioned further solutions are that they avoid crosstalk between signal pins, isolate external static electricity and electromagnetic interference, and protect the integrity of signal transmission.

[0014] Preferably, the connector has symmetrically arranged limiting holes inside, and a guide rod is symmetrically fixedly connected to one side of the metal shell. The guide rod is engaged with the limiting hole, and an elastic grounding contact is provided inside the guide rod.

[0015] The advantages of adopting the above-mentioned further solutions are that it facilitates the rapid determination of the installation position of the metal shell, improves the stability and efficiency of the metal shell installation, and ensures that the flexible grounding contact can make close contact with the grounding part of the plug to ensure a good electrical connection. Even during vibration or insertion and removal, the flexible grounding contact can ensure stable grounding performance and improve the ESD resistance of the connector.

[0016] Preferably, the fixing component includes a fixing frame, with one side of each of the two fixing frames fixedly connected to the upper and lower ends of the connector. A sliding plate is slidably connected inside the fixing frame, and a number of positioning posts are fixedly connected to one side of the sliding plate. A number of positioning holes are provided at the upper and lower ends inside the metal shell, and the positioning posts are engaged with the positioning holes. A threaded rod is rotatably connected to the other side of the sliding plate, and the outer side of the threaded rod is threadedly connected to one side of the inside of the fixing frame.

[0017] The advantages of adopting the above-mentioned further solution are that it facilitates the simultaneous connection and separation of multiple positioning posts and positioning holes, improves the efficiency of metal shell installation and disassembly while ensuring stable connection, and increases the convenience of connector use.

[0018] Preferably, both the end body and the inside of the metal shell are fixedly connected with elastic rubber pads.

[0019] The beneficial effects of adopting the above-mentioned further solutions are that they reduce the problems of loosening of internal components and poor contact caused by vibration, and improve the reliability and ESD protection performance of the connector in vibration environment.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] Using a metal housing as the first line of ESD protection for the connector, external static electricity can be quickly conducted to the ground, while also shielding against external electromagnetic interference. The metal housing is easy to install and remove, facilitating maintenance and repair of the internal components. Multiple grounding pins connected to the metal housing form multiple parallel static discharge channels. When static electricity occurs, it can be quickly discharged through multiple paths, reducing the impact of static electricity on the internal circuitry of the connector. The grounding pins are connected to the signal pins through TVS diodes. The TVS diodes can clamp the high voltage generated by static electricity within a safe range in a very short time, protecting the signal pins from static damage and effectively improving the ESD protection performance of the connector. Attached Figure Description

[0022] Figure 1 This is an isometric view of one side of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the rear cross-sectional structure of this utility model;

[0025] Figure 4 This is a front cross-sectional view of the present invention.

[0026] Figure 5 This is a side view sectional structural diagram of the present invention.

[0027] The meanings of the labels in the diagram are as follows:

[0028] 1. Connector; 11. Terminal body; 12. Mounting plate; 13. Signal pin; 14. Shielding layer; 15. Ground pin; 16. TVS diode; 17. Limiting hole;

[0029] 2. Metal casing; 21. Guide rod; 22. Flexible grounding contact; 23. Positioning hole;

[0030] 3. Fixing components; 31. Fixing frame; 32. Sliding plate; 33. Positioning post; 34. Threaded rod;

[0031] 4. Elastic rubber pad. Detailed Implementation

[0032] 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.

[0033] Please see Figures 1-5 As shown, this embodiment provides a D-SUB female connector with integrated ESD protection, including a connector head 1. Considering the shortcomings of traditional D-SUB female connectors in ESD protection, such as simple protection structure, poor grounding, and inability to effectively suppress high-frequency interference, an end body 11 is fixedly connected inside the connector head 1. A mounting plate 12 is fixedly connected to one end of the end body 11. A signal pin 13 is fixedly connected inside the mounting plate 12. Multiple grounding pins 15 are provided on one side of the mounting plate 12. One end of the grounding pin 15 is connected to one end of the signal pin 13 through a TVS diode 16. The TVS diode 16 can clamp the high voltage generated by static electricity within a safe range in a very short time, protecting the signal pin 13 from static damage. A metal shell 2 is provided on one side of the connector head 1. Fixing components 3 are provided at both the top and bottom of one side of the connector head 1. The metal shell 2 is installed on one side of the connector head 1 through the fixing components 3, which facilitates the quick disassembly and installation of the metal shell 2 and facilitates the maintenance and repair of the internal components of the connector.

[0034] The improvement of this embodiment lies in the following: the metal shell 2 serves as the first ESD protection barrier for the connector, which can quickly conduct external static electricity to the ground and shield against external electromagnetic interference. The installation of the metal shell 2 is simple, facilitating quick disassembly and installation, and making it easy to maintain and repair the internal components of the connector. Multiple grounding pins 15 are connected to the metal shell 2, forming multiple parallel static discharge channels. When static electricity occurs, it can be quickly discharged through multiple paths, reducing the impact of static electricity on the internal circuit of the connector. The grounding pins 15 are connected to the signal pins 13 through TVS diodes 16. The TVS diodes 16 can clamp the high voltage generated by static electricity within a safe range in a very short time, protecting the signal pins from static damage and effectively improving the ESD protection performance of the connector.

[0035] Specifically, in order to avoid crosstalk between signal pins 13 and to isolate external static electricity and electromagnetic interference and protect the integrity of signal transmission, a shielding layer 14 is provided on the outside of the signal pins 13. The shielding layer 14 is made of copper foil and is soldered to the other side of the mounting plate 12. The shielding layer 14 tightly wraps the signal pins 13 and is connected to the mounting plate 12 by soldering to form a complete grounding loop.

[0036] To ensure the accuracy of the connection between the metal housing 2 and the connector 1 during installation, symmetrical limiting holes 17 are provided inside the connector 1. A guide rod 21 is symmetrically fixedly connected to one side of the metal housing 2. The guide rod 21 is engaged inside the limiting hole 17, which facilitates the quick determination of the installation position of the metal housing 2 and improves the stability and efficiency of the installation of the metal housing 2.

[0037] To ensure stable grounding performance during vibration and insertion / removal, a flexible grounding contact 22 is provided inside the guide rod 21. The flexible grounding contact 22 is made of a highly elastic and highly conductive metal material, such as beryllium bronze. When the plug is inserted into the socket, the flexible grounding contact 22 can make close contact with the grounding part of the plug to ensure a good electrical connection. Even during vibration or insertion / removal, the flexible grounding contact 22 can ensure stable grounding performance and improve the connector's ESD resistance.

[0038] To facilitate the installation and disassembly of the metal housing 2 and the subsequent inspection and maintenance of the internal components of the connector, the fixing assembly 3 includes a fixing frame 31. Two fixing frames 31 are fixedly connected to the upper and lower ends of the connector 1 on one side. A sliding plate 32 is slidably connected inside the fixing frame 31. Several positioning posts 33 are fixedly connected to one side of the sliding plate 32. Several positioning holes 23 are provided at the upper and lower ends of the metal housing 2. The positioning posts 33 are engaged with the positioning holes 23. A threaded rod 34 is rotatably connected to the other side of the sliding plate 32. The outer side of the threaded rod 34 is threadedly connected to one side of the fixing frame 31. By rotating the threaded rod 34, the external thread of the lower part of the threaded rod 34 engages with the internal thread on one side of the fixing frame 31. This causes the threaded rod 34 to push the sliding plate 32 and the positioning posts 33 to move up and down inside the fixing frame 31. This facilitates the simultaneous connection and separation of multiple positioning posts 33 with the positioning holes 23, ensuring stable connection and improving the installation and disassembly efficiency of the metal housing 2, thus increasing the ease of use of the connector.

[0039] To avoid loosening and poor contact of internal components of the connector, elastic rubber pads 4 are fixedly connected inside both the end body 11 and the metal housing 2. The elastic rubber pads 4 can absorb vibration energy, reduce loosening and poor contact of internal components of the connector caused by vibration, and improve the reliability and ESD protection performance of the connector in vibration environment.

[0040] In summary, the working principle of this solution is as follows:

[0041] First, the metal housing 2 is engaged inside the limiting hole 17 via the guide rod 21, quickly determining the installation position of the metal housing 2. Then, the threaded rod 34 is rotated, and the external thread of the lower part of the threaded rod 34 engages with the internal thread on one side of the fixed frame 31. This causes the threaded rod 34 to push the sliding plate 32 and the positioning post 33 downward within the fixed frame 31, so that the positioning post 33 engages with the positioning hole 23, locking the installation position of the metal housing 2. This improves the efficiency of installing and disassembling the metal housing 2 and increases the convenience of using the connector, facilitating subsequent inspection and maintenance of the internal components of the connector. During use, the end body 11 is connected to the male connector for signal transmission. The grounding part of the male connector engages inside the guide rod 21, and the elastic grounding contact 22 inside the guide rod 21 can make close contact with the grounding part of the plug, ensuring a good electrical connection, even under vibration or insertion. During the unplugging process, the elastic grounding contact 22 can also ensure stable grounding performance and improve the connector's ESD resistance. During use, the metal shell 2 acts as the first ESD protection barrier for the connector, which can quickly conduct external static electricity to the ground and at the same time shield against external electromagnetic interference. The shielding layer 14 tightly wraps the signal pin 13, isolating external static electricity and electromagnetic interference and protecting the integrity of signal transmission. Multiple grounding pins 15 are connected to the metal shell 2 to form multiple parallel static discharge channels. When static electricity occurs, it can be quickly discharged through multiple paths, reducing the impact of static electricity on the internal circuit of the connector. The grounding pin 15 is connected to the signal pin 13 through the TVS diode 16. The TVS diode 16 can clamp the high voltage generated by static electricity within a safe range in a very short time, protecting the signal pin 13 from static damage and effectively improving the ESD protection performance of the connector.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A D-SUB female connector with integrated ESD protection, comprising a connector (1), characterized in that: The connector (1) has an end body (11) fixedly connected inside. One end of the end body (11) is fixedly connected to a mounting plate (12). The mounting plate (12) has a signal pin (13) fixedly connected inside. The mounting plate (12) has multiple grounding pins (15) on one side. One end of the grounding pin (15) is connected to one end of the signal pin (13) through a TVS diode (16). The connector (1) has a metal shell (2) on one side. The connector (1) has fixing components (3) at both the top and bottom ends. The metal shell (2) is installed on one side of the connector (1) through the fixing components (3).

2. The D-SUB female connector with integrated ESD protection according to claim 1, characterized in that: A shielding layer (14) is provided on the outside of the signal pin (13). The shielding layer (14) is made of copper foil and is soldered to the other side of the mounting plate (12).

3. A D-SUB female connector with integrated ESD protection according to claim 1, characterized in that: The connector (1) has symmetrically arranged limiting holes (17) inside, and the metal shell (2) has symmetrically fixed guide rods (21) on one side, and the guide rods (21) are engaged and connected inside the limiting holes (17).

4. A D-SUB female connector with integrated ESD protection according to claim 3, characterized in that: The guide rod (21) is provided with an elastic grounding contact (22).

5. A D-SUB female connector with integrated ESD protection according to claim 1, characterized in that: The fixing component (3) includes a fixing frame (31). One side of each fixing frame (31) is fixedly connected to the upper and lower ends of the connector (1). A sliding plate (32) is slidably connected inside the fixing frame (31). Several positioning posts (33) are fixedly connected to one side of the sliding plate (32). Several positioning holes (23) are provided at the upper and lower ends inside the metal shell (2). The positioning posts (33) are engaged and connected inside the positioning holes (23).

6. A D-SUB female connector with integrated ESD protection according to claim 5, characterized in that: The sliding plate (32) is rotatably connected to a threaded rod (34) on the other side, and the outer side of the threaded rod (34) is threadedly connected to one side of the inside of the fixed frame (31).

7. A D-SUB female connector with integrated ESD protection according to claim 1, characterized in that: Both the end body (11) and the metal shell (2) are fixedly connected with elastic rubber pads (4).

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