Anti-electromagnetic interference coaxial plug connector
By designing a conductive ring and inner shielding sleeve, combined with external threads and anti-collision rings on the outer surface of the housing, the problem of signal interference in coaxial plug connectors under high-frequency environments is solved, achieving stable signal transmission and improved connection strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-19
- Publication Date
- 2026-04-14
AI Technical Summary
Existing coaxial connectors suffer from poor shielding and conductor fit in high-frequency, high-density interference environments, leading to electromagnetic leakage and signal interference, which affects signal transmission quality.
The conductive shielding structure is composed of a conductive ring and an inner shielding sleeve. The inner shielding sleeve is tightly fitted with the inner wall of the outer shell to form a low-impedance ring grounding path. A space layer is formed between the conductive ring and the inner shielding sleeve to absorb and weaken external interference waves. At the same time, external threads and anti-collision rings are machined on the outer surfaces of the upper and lower shells to enhance the connection strength and prevent slippage.
It effectively shields electromagnetic radiation leakage, stabilizes signal transmission, enhances connection strength, prevents slippage during plugging and unplugging, and reduces signal distortion and system malfunctions.
Smart Images
Figure CN224123650U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coaxial plug connector technology, specifically to an anti-electromagnetic interference coaxial plug connector. Background Technology
[0002] Coaxial connectors are connection devices used for radio frequency signal transmission, mainly composed of a housing, terminals, and pins. Currently available coaxial connectors, under high-frequency, high-density interference environments, often suffer from poor shielding and conductor contact, leading to electromagnetic leakage or interference signals entering the conduction path. This can cause signal waveform distortion, reduced transmission speed, and even system malfunctions. Such interference is particularly pronounced in precision applications such as industrial control and remote communication, and in severe cases, can result in equipment failure or signal distortion. Therefore, there is an urgent need for an electromagnetic interference-resistant coaxial connector to address the insufficient anti-interference capability of existing technologies under high-frequency operation. Utility Model Content
[0003] The purpose of this invention is to provide an anti-electromagnetic interference coaxial plug connector to solve the problem mentioned in the background art that traditional plugs are susceptible to signal interference in high-frequency environments and have insufficient anti-interference capabilities.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an anti-electromagnetic interference coaxial plug connector, comprising an upper shell and a lower shell, wherein the upper shell and the lower shell are welded to form an outer shell, two sets of slots are machined inside the upper shell, a socket is machined in the middle of the slots, a contact terminal is provided at the bottom end of the socket, a conductive ring is connected to the bottom end of the contact terminal, an inner shielding sleeve is machined on the outer edge of the conductive ring, a connecting terminal is installed at the bottom end of the conductive ring, and a pin is installed at the bottom end of the connecting terminal.
[0005] As a further technical solution of this utility model, a plug is integrally formed at the bottom end of the lower shell, and the plug is made of plastic.
[0006] As a further technical solution of this utility model, a weld is provided between the upper shell and the lower shell, and a retaining foot is processed on the inner side of the upper shell near the edge of the weld, and the retaining foot fits the shape of the inner wall of the lower shell.
[0007] As a further technical solution of this utility model, an anti-wear semi-ring is provided on one side of the inside of the contact terminal, and the anti-wear semi-ring is an elastic semi-ring that fits the insertion hole.
[0008] As a further technical solution of this utility model, anti-collision rings are processed on the bottom edge of the lower shell and the top edge of the upper shell.
[0009] As a further technical solution of this utility model, the outer surfaces of the upper shell and the lower shell are machined with external threads.
[0010] Compared with the prior art, the beneficial effects of this utility model are: the anti-electromagnetic interference coaxial plug connector not only suppresses crosstalk and external electromagnetic field interference and buffers impacts, but also improves connection strength and facilitates maintenance;
[0011] By incorporating a conductive ring and an inner shielding sleeve, and tightly wrapping the outer edge of the conductive ring with the inner shielding sleeve, a conductive shielding structure is formed. This effectively shields against electromagnetic radiation leakage during high-frequency signal transmission. The inner shielding sleeve fits tightly against the inner wall of the outer shell to form a low-impedance ring-shaped grounding path. A space layer is formed between the conductive ring and the inner shielding sleeve, which is beneficial for absorbing and weakening interference waves from the outside. The high-frequency conductive signal of the pin is stably transmitted to the connection terminal, effectively suppressing crosstalk and external electromagnetic field interference, thus solving the problem that traditional plugs are susceptible to signal interference in high-frequency environments.
[0012] By incorporating external threads and anti-collision rings, external threads are machined on the outer surfaces of the upper and lower shells, creating regular and continuous threaded protrusions. This enhances friction during hand-held insertion and removal, preventing slippage caused by sweaty hands, oil, or other factors. Anti-collision rings are machined at the edges of the lower and upper shells, forming a ring-shaped buffer structure. When the plug is connected to the device socket, the anti-collision rings contact the socket panel, buffering the impact and reducing the instantaneous impact force on the contact surface.
[0013] The plug housing consists of an upper shell, a lower shell, and locking feet. The upper and lower shells are welded together to form a closed plug housing. The locking feet are located inside the weld seam, which limit the movement of the lower shell and prevent misalignment during the welding process, thus improving the connection strength. During maintenance, the upper and lower shells can be separated by heating the weld seam to avoid the entire unit being scrapped. Attached Figure Description
[0014] Figure 1 This is a frontal cross-sectional view of the present invention.
[0015] Figure 2 This is a front view structural diagram of the present utility model;
[0016] Figure 3 This is a three-dimensional bottom view of the structure of this utility model;
[0017] Figure 4 This is a three-dimensional top view of the structure of this utility model;
[0018] Figure 5 This is a top view of the structure of this utility model.
[0019] In the diagram: 1. Pin; 2. Connecting terminal; 3. Conductive ring; 4. Inner shielding sleeve; 5. Clamping pin; 6. Slot; 7. Socket; 8. Upper shell; 9. Anti-wear semi-ring; 10. Contact terminal; 11. Lower shell; 12. Plug; 13. External thread; 14. Anti-collision ring. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-5 The present invention provides an embodiment of an anti-electromagnetic interference coaxial plug connector, comprising an upper shell 8 and a lower shell 11, the upper shell 8 and the lower shell 11 being welded to form an outer shell, two sets of slots 6 being machined inside the upper shell 8, a socket 7 being machined in the middle of the slots 6, a contact terminal 10 being provided at the bottom of the socket 7, a conductive ring 3 being connected to the bottom of the contact terminal 10, an inner shielding sleeve 4 being machined on the outer edge of the conductive ring 3, a connecting terminal 2 being installed at the bottom of the conductive ring 3, a pin 1 being installed at the bottom of the connecting terminal 2, and an anti-wear semi-ring 9 being provided on one side inside the contact terminal 10, the anti-wear semi-ring 9 being an elastic semi-ring 9 that fits the socket 7;
[0022] Specifically, such as Figure 1 and Figure 5 As shown, by tightly wrapping the inner shielding sleeve 4 around the outer edge of the conductive ring 3, a conductive shielding structure is formed, which can effectively shield the electromagnetic radiation leakage generated during the transmission of high-frequency signals. The inner shielding sleeve 4 is tightly attached to the inner wall of the outer shell to form a low-impedance ring grounding path. A space layer is formed between the conductive ring 3 and the inner shielding sleeve 4, which is conducive to absorbing and weakening interference waves from the outside. The high-frequency conductive signal of pin 1 is stably transmitted to the connection terminal 2, effectively suppressing crosstalk and external electromagnetic field interference.
[0023] Anti-collision rings 14 are machined on the bottom edge of the lower shell 11 and the top edge of the upper shell 8. External threads 13 are machined on the outer surfaces of the upper shell 8 and the lower shell 11.
[0024] Specifically, such as Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, external threads 13 are machined on the outer surfaces of the upper shell 8 and the lower shell 11 to give the whole a regular and continuous thread protrusion, which increases the friction when the plug is inserted and removed by hand and prevents the user from slipping out due to sweaty hands, oil stains, etc. Anti-collision rings 14 are machined on the edge ends of the lower shell 11 and the upper shell 8. When the plug is connected to the device socket, the anti-collision rings 14 contact the socket panel to reduce the impact.
[0025] A plug 12 is integrally formed at the bottom of the lower shell 11. The plug 12 is made of plastic. A weld is provided between the upper shell 8 and the lower shell 11. A retaining foot 5 is machined on the inner side of the upper shell 8 near the edge of the weld. The retaining foot 5 fits the shape of the inner wall of the lower shell 11.
[0026] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the upper shell 8 and the lower shell 11 are welded together to form a closed plug shell. By setting a retaining foot 5 on the inside of the weld, the retaining foot 5 and the inner wall of the lower shell 11 form a limit, which avoids misalignment during the welding process and improves the connection strength. During maintenance, the upper shell 8 and the lower shell 11 can be separated by heating the weld to avoid the whole shell being scrapped.
[0027] Working principle: When the plug is connected to an external device, the signal is transmitted to the connection terminal 2 through pin 1, and then extended by the conductive ring 3. An inner shielding sleeve 4 is set around the signal transmission path. The inner shielding sleeve 4 can isolate the leakage of high-frequency signals to the outside. The inner shielding sleeve 4 is tightly fitted with the inner wall of the outer shell to form a low-impedance ring grounding path. A space layer is formed between the conductive ring 3 and the inner shielding sleeve 4, which is conducive to absorbing and weakening interference waves from the outside. The high-frequency transmission signal of pin 1 is stably transmitted to the connection terminal 2, effectively suppressing crosstalk and external electromagnetic field interference. External threads 13 are processed on the outer surface of the upper shell 8 and the lower shell 11 to give the whole a regular and continuous threaded protrusion, which enhances the friction when the user is hand-operated to plug and unplug, and prevents the user from slipping due to sweaty hands, oil stains, etc. Anti-collision rings 14 are processed at the edge ends of the lower shell 11 and the upper shell 8 to form a ring-shaped buffer structure. When the plug is connected to the device socket, the anti-collision rings 14 contact the socket panel, which plays a role in buffering the impact and reducing the instantaneous impact force of the contact surface.
[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. An electromagnetic interference-resistant coaxial plug connector, comprising an upper shell (8) and a lower shell (11), characterized in that: The upper shell (8) and the lower shell (11) are welded to form an outer shell. Two sets of slots (6) are machined inside the upper shell (8). A socket (7) is machined in the middle of the slot (6). A contact terminal (10) is provided at the bottom of the socket (7). A conductive ring (3) is connected to the bottom of the contact terminal (10). An inner shielding sleeve (4) is machined on the outer edge of the conductive ring (3). A connecting terminal (2) is installed at the bottom of the conductive ring (3). A pin (1) is installed at the bottom of the connecting terminal (2).
2. The electromagnetic interference resistant coaxial plug connector according to claim 1, characterized in that: The bottom of the lower shell (11) is integrally formed with a plug (12), which is made of plastic.
3. The electromagnetic interference resistant coaxial plug connector according to claim 1, characterized in that: A weld is provided between the upper shell (8) and the lower shell (11). The upper shell (8) has a retaining foot (5) processed on the inner side of the weld edge. The retaining foot (5) fits the shape of the inner wall of the lower shell (11).
4. The electromagnetic interference resistant coaxial plug connector according to claim 1, characterized in that: The contact terminal (10) has an anti-wear semi-ring plate (9) on one side inside. The anti-wear semi-ring plate (9) is an elastic semi-ring plate that fits the insertion hole (7).
5. The electromagnetic interference resistant coaxial plug connector according to claim 1, characterized in that: The bottom edge of the lower shell (11) and the top edge of the upper shell (8) are both equipped with anti-collision rings (14).
6. The electromagnetic interference resistant coaxial plug connector according to claim 1, characterized in that: The outer surfaces of the upper shell (8) and the lower shell (11) are machined with external threads (13).