Anti-vibration, anti-loosening, environmental-resistant connector and cable assembly thereof

Abstract

The application relates to an anti-vibration, anti-loosening and environment-resistant connector and a cable assembly thereof, which comprises a plug and a socket, the plug is installed on a floating support, and the socket is installed on a fixed support; the floating support comprises a detachable base and an upper pressing plate, a rubber pad is arranged in a ring formed by the base and the upper pressing plate, the plug is fastened in the ring formed by the upper pressing plate and the base, and a flexible supporting structure is formed; a fixed square plate is arranged on the fixed support, an installation panel is arranged on the socket, and the installation panel is fixedly connected with the fixed square plate, so that the socket is installed on the fixed support and a rigid fixed structure is formed. The connector body is directly installed on a matched equipment by using the fixed support and the floating support, a cantilever beam structure is avoided, and the anti-vibration and anti-loosening performance is improved; in addition, the connector adopts multiple complementary sealing forms, sealing redundancy design is carried out, the overall environment-resistant performance is improved, and the connector can resist extremely severe working condition environments and serious accident environments caused by natural disasters.

Description

Technical Field

[0001] This invention relates to the field of connector technology, specifically to a vibration-resistant, anti-loosening, and environmentally resistant connector and its cable assembly. Background Technology

[0002] Connectors achieve circuit connections through the mating of male and female connectors, enabling electrical interconnection between devices and systems. As fundamental electrical components, connectors are widely used in various fields of modern technology. Since connectors typically contain several to dozens of contact pairs, the failure of a single contact pair can potentially cause equipment malfunctions. Furthermore, the overall system link often uses several connectors for connection, making connectors a frequent source of electrical faults. Typical instrument connectors are directly mounted and fixed to the compatible instrument equipment via welding or threading, forming a typical cantilever beam structure. This cantilever beam effect is particularly pronounced for connectors with many contacts and cable assemblies with long and heavy hanging cables at the tail. This creates severe localized stress concentration at the root of the connector and equipment installation. Under vibration loads such as vibration and earthquakes, this effect will directly lead to fatigue damage to the interconnected equipment. Summary of the Invention

[0003] To address the aforementioned issues, this invention provides a vibration-resistant, anti-loosening, and environmentally resistant connector and its cable assembly. The connector body utilizes fixed and floating supports for direct mounting on the associated equipment, avoiding a cantilever beam structure and improving its vibration resistance and anti-loosening performance. Furthermore, the connector employs multiple complementary sealing methods for redundant sealing design, enhancing its overall environmental resistance and enabling it to withstand extremely harsh working conditions and severe accidents caused by natural disasters to a certain extent.

[0004] The technical problem solved by this invention is achieved by the following technical solution: According to this invention, a vibration-resistant, anti-loosening, and environmentally resistant connector includes a plug and a socket. The plug is fixed on a floating support, and the socket is fixed on a fixed support. The floating support includes a base and an upper pressure plate, which are detachably connected. A rubber pad is provided inside the ring formed by the base and the upper pressure plate. The plug is fastened within the ring formed by the upper pressure plate and the base, and the floating support provides a flexible support structure for the plug. The fixed support has a fixed square plate, and the socket has a corresponding mounting panel. The mounting panel and the fixed square plate are fixedly connected, fixing the socket to the fixed support. The fixed support provides a rigid fixing structure for the socket.

[0005] Furthermore, the plug body includes a plug housing, a connecting nut, a round sleeve, and a tail accessory I. The plug housing is threadedly connected to the round sleeve, and the round sleeve is threadedly connected to the tail accessory I. The joints between the plug housing and the round sleeve, as well as the joints between the round sleeve and the tail accessory I, are all fixed and sealed by welding. The round sleeve is also provided with a filler sealing structure I, which includes a rubber ring I and gaskets I on both sides of the rubber ring I. The axial force generated by the threaded rotation between the tail accessory I and the round sleeve pushes the gaskets I to press the rubber ring I, so that the rubber ring I and the cable I connected to the plug form a reliable seal. The shielding layer of the cable I is turned outward to the flange at the tail end of the plug housing and fixed by wrapping with shielding wire. The shielding layer is then fixed by soldering to achieve 360° electromagnetic shielding.

[0006] The socket body includes a socket housing, a square mounting sleeve, and a tail accessory II. The socket housing is threadedly connected to the square mounting sleeve, and the square mounting sleeve is threadedly connected to the tail accessory II. The joints between the socket housing and the square mounting sleeve, as well as the joints between the square mounting sleeve and the tail accessory II, are all sealed by welding. The square mounting sleeve also has a filler sealing structure II, which includes a rubber ring II and gaskets II on both sides of the rubber ring II. The axial force generated by the threaded rotation between the tail accessory II and the square mounting sleeve pushes the gaskets II to press the rubber ring II, so that the rubber ring II and the cable II connected to the socket form a reliable seal. The shielding layer of the cable II is turned outward to the flange at the tail end of the socket housing and fixed by wrapping with shielding wire. The shielding layer is then fixed by soldering to achieve 360° electromagnetic shielding.

[0007] Furthermore, an insulator component I is assembled inside the plug housing, and the socket contact is fixed in the insulator component I; a retaining ring I is installed on the inner wall of the front end of the plug housing, and a protruding key I is provided on the side wall of the insulator component I for axial limiting in cooperation with the protruding key II on the inner wall of the plug housing. The insulator component I is axially limited and fixed in the plug housing by the retaining ring I and the protruding key II.

[0008] Furthermore, a radial O-ring I is provided between the round sleeve and the plug housing for sealing, and a radial O-ring II is provided between the round sleeve and the tail accessory I for sealing; the tail end of the tail accessory I is also designed with an NPT thread to achieve a sealed connection with the cable I protective sleeve.

[0009] Furthermore, an insulator component II is assembled inside the socket housing, and the pin contact is fixed in the insulator component II; a retaining ring II is installed on the inner wall of the front end of the socket housing, and a protruding key III is provided on the side wall of the insulator component II for axial limiting in cooperation with the protruding key IV on the inner wall of the socket housing. The insulator component IV is axially limited and fixed in the socket housing by the retaining ring II and the protruding key IV.

[0010] Furthermore, a radial O-ring Ⅲ is provided between the square mounting sleeve and the socket housing for sealing, and a radial O-ring Ⅳ is also provided between the square mounting sleeve and the tail accessory Ⅱ for sealing; the tail end of the tail accessory Ⅱ is also designed with NPT thread, which can achieve a sealed connection with the cable Ⅱ protective sleeve.

[0011] Furthermore, the outer wall of the socket housing's mating end is provided with a curved groove, and the inner wall of the connecting nut is provided with a retainer. The quick connection or separation of the connector is achieved by the retainer engaging with the curved groove.

[0012] Furthermore, the plug housing is also provided with a shoulder, and a corrugated spring is installed between the shoulder and the tail of the connecting nut; the inner wall of the connecting nut is also provided with a backstop shoulder, and the outer circle of the shoulder of the plug housing is also provided with a convex structure. When the connector is in the mating state and subjected to extreme separation load, the convex structure and the backstop shoulder are in rigid contact. The backstop shoulder axially limits the plug housing, preventing the corrugated spring from being compressed indefinitely, while ensuring that the head seat mating point is always in a sealed state.

[0013] Furthermore, the inner wall of the socket housing at the mating end is also provided with a radial O-ring, and the front end face of the plug shoulder is also provided with an axial O-ring. After the head and seat are inserted into place, the radial and axial O-rings are used to achieve radial and axial sealing of the head and seat.

[0014] A cable assembly includes a plug, a socket, cable I, and cable II, wherein cable I is connected to the plug, cable II is connected to the socket, and the plug and socket adopt the aforementioned plug and socket structure.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] (1) In this invention, the socket is fixed to the fixed support with a combination screw, and the plug is fixed to the floating support with a combination screw. Then, the fixed support and the floating support are directly installed to the equipment with another set of combination screws, thereby achieving the fixation between the plug and the socket and the equipment. This avoids the cantilever beam installation method, and places its center of gravity near the support. This reduces the overall installation center of gravity of the connector and its cable assembly relative to the matching equipment and the overturning moment during vibration and impact, thereby improving its installation strength, stability and vibration resistance. The fixed support and the floating support together define the mating state of the connector and its cable assembly. Even if the connection locking mechanism fails, it can ensure that the internal pins and socket contacts are always in a good electrical contact state, which can prevent the interruption of electrical transmission caused by the loosening, dislodgement or complete detachment of the plug and socket under any circumstances.

[0017] (2) This invention also employs a redundant sealing design. The head and socket mating joint uses radial and axial O-rings for sealing. The connector's internal seal is achieved through O-rings and potting compound, while the external seal is achieved through welding, thus achieving complete isolation from the external environment. The tail accessory has an NPT thread at the end for a sealed connection with the cable protective sleeve. Both the plug and socket are designed with shielding structures to achieve 360° electromagnetic shielding, allowing connection to instrumentation cables.

[0018] (3) The plug and socket adopt a bayonet connection method, which can achieve quick connection and separation through the cooperation of the curved groove and the snap fastener. A corrugated spring provides stable elastic support between the snap fastener and the recess of the curved groove to prevent loosening and ensure reliable connection.

[0019] (4) A raised round structure is provided on the plug shoulder, and a backstop shoulder is provided inside the connecting nut. When the connector is in the plug-in state, when the connector is subjected to extreme separation, the raised round structure and the backstop shoulder can prevent the plug from being excessively retracted due to axial force, avoid the crushing phenomenon caused by the infinite compression of the corrugated spring, and ensure that the radial O-ring at the head seat is always in a sealed state, ensuring the reliable sealing of the connection mechanism under extreme conditions, and effectively avoiding the problem of connector sealing failure caused by phenomena such as tail cable dragging. Attached Figure Description

[0020] Figure 1 This is a perspective view of the connector of the present invention;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a structural schematic diagram of a fixed support;

[0023] Figure 4 This is a schematic diagram of the floating support structure;

[0024] Figure 5 This is a cross-sectional view of the plug;

[0025] Figure 6 This is a cross-sectional view of the socket;

[0026] Figure 7 This is an exploded view of the plug;

[0027] Figure 8 This is an exploded view of the socket;

[0028] Figure 9 It is a structural diagram of the plug housing and socket housing under extreme stress after they are inserted (F represents the ultimate separation force on the connector).

[0029] 【Component and Symbol Explanation】: 1-Floating support, 2-Fixed support, 3-Upper pressure plate, 4-Base, 5-Fixed square plate, 6-Mounting panel, 7-Plug housing, 8-Connecting nut, 9-Round sleeve, 10-Tail accessory I, 11-Socket contact, 12-High insulator, 13-Insulating pressure plate I, 14-Snap ring I, 15-Featured key I, 16-Featured key II, 17-Radial O-ring I, 18-Radial O-ring II I, 19-Rubber ring I, 20-Washer I, 21-NPT thread, 22-Socket housing, 23-Square plate mounting sleeve, 24-Tail Part II, 25-Pin contact, 26-Short insulator, 27-Insulating pressure plate II, 28-Snap ring II, 29-Rump key III, 30-Rump key IV, 31-Radial O-ring III, 32-Radial O-ring IV, 33-Rubber ring II, 34-Washer II, 35-Rubber pad, 36-Groove, 37-Snap pin, 38-Recess, 39-Wave spring, 40-Radial O-ring V, 41-Shoulder, 42-Axial O-ring, 43-Convex round structure, 44-Isolation shoulder, 45-Outer flat round structure, 46-Plug housing tail end flange, 47-Socket housing tail end flange. Detailed Implementation

[0030] To further illustrate the technical means and effects of this invention, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1 As shown, the connector of the present invention includes a plug, a socket, a floating support 1, and a fixed support 2. An upper pressure plate 3 and a base 4 are connected to the floating support. The plug is installed within the ring formed by the upper pressure plate and the base of the floating support and is secured by combination screws. A fixing plate 5 is provided on the fixed support, and a corresponding mounting panel 6 is provided on the socket. The mounting panel and the fixing plate are secured to the fixed support by combination screws.

[0032] Specifically, such as Figure 5 As shown, the plug includes a plug housing 7, a connecting nut 8, a round sleeve 9, and a tail accessory I 10. An insulator component I is assembled inside the plug, and a socket contact 11 is fixed to the insulator component.

[0033] I. Figure 5 In the illustrated embodiment, the insulator component I includes a high insulator 12 and an insulating pressure plate I 13. The high insulator and the insulating pressure plate I are fastened together to completely embed the socket contact. In the plug, the plug housing's mating end is defined as the front end. The inner wall of the front end of the plug housing is provided with a mounting groove for mounting a retaining ring I 14. The side wall of the insulating pressure plate I is provided with a protruding key I 15 for axial limiting in conjunction with a protruding key II 16 on the inner wall of the plug housing. The retaining ring I and the protruding key II axially limit and fix the insulator component I in the plug housing.

[0034] The plug housing is threaded to the round sleeve, and a permanent seal is achieved by welding at the joint between the plug housing and the round sleeve. Similarly, the round sleeve is threaded to the tail accessory I, and a permanent seal is achieved by welding at the joint between the round sleeve and the tail accessory I. The plug housing, round sleeve, and tail accessory I are all made of austenitic stainless steel with high corrosion resistance. A radial O-ring I 17 is provided between the round sleeve and the plug housing for sealing, and a radial O-ring II 18 is provided between the round sleeve and the tail accessory I for sealing. A stuffing box is also provided inside the round sleeve to accommodate the stuffing seal structure I, which includes a rubber ring I 19 and gaskets I 20 on both sides of the rubber ring I. The axial force generated by the rotation of the tail accessory I and the round sleeve along the thread pushes the gasket I to press the rubber ring I. According to the principle of constant volume, after the rubber ring I is pressed, it evenly hugs the cable connected to the plug (hereinafter referred to as cable I, not shown in the attached figure) along its circumference and forms a reliable seal. Gasket I is used to prevent rubber ring I from rotating and wearing out along with tail accessory I. The tail end of tail accessory I is also designed with NPT thread 21, which can achieve a sealed connection with the cable I protective sleeve.

[0035] After cable I enters from the tail of accessory I, it passes through rubber ring I. After the center conductor of cable I is terminated with the plug contact, the shielding layer of cable I is turned outward to the 46th position of the tail flange of the plug housing and fixed with shielding wire. Then, the shielding layer is fixed by soldering to achieve a 360° electromagnetic shielding effect.

[0036] like Figure 6 As shown, the socket includes a socket housing 22, a square mounting sleeve 23, and a tail accessory II 24. An insulator component II is assembled inside the socket housing, and the pin contact 25 is fixed in the insulator component II. Figure 6 In the illustrated embodiment, the insulator component II includes a short insulator 26 and an insulating pressure plate II 27. The short insulator and the insulating pressure plate II are fastened together to completely embed the pin contact. In the socket, the mating end of the socket housing is defined as the front end. The inner wall of the front end of the socket housing is provided with a mounting groove for mounting a retaining ring II 28. The side wall of the insulating pressure plate II is provided with a protruding key III 29 for cooperating with a protruding key IV 30 on the inner wall of the socket housing for axial limiting. The retaining ring II and the protruding key IV axially limit and fix the insulator component IV in the socket housing.

[0037] The socket housing and the square mounting sleeve are threaded together. After the threaded connection, a permanent seal is achieved by welding at the joint between the socket housing and the square mounting sleeve. Similarly, the square mounting sleeve is threaded together with the tail accessory II. After the threaded connection, a permanent seal is achieved by welding at the joint between the square mounting sleeve and the tail accessory II. The plug housing, round sleeve, and tail accessory I are all made of austenitic stainless steel with high corrosion resistance. A radial O-ring III 31 is provided between the square mounting sleeve and the socket housing for sealing, and a radial O-ring IV 32 is also provided between the square mounting sleeve and the tail accessory II for sealing. A stuffing box is also provided inside the square mounting sleeve to accommodate the stuffing seal structure II, which includes a rubber ring II 33 and gaskets II 34 disposed on both sides of the rubber ring II. The axial force generated by the rotation of the tail accessory II and the square mounting sleeve along the thread pushes the gaskets.

[0038] II. The compression ring II, based on the principle of constant volume, compresses the ring II so that it evenly wraps around the cable (hereinafter referred to as cable II) connected to the socket along its circumference, forming a reliable seal. Gasket II is used to prevent the ring II from rotating and wearing out along with the tail accessory II. The tail end of the tail accessory II is also designed with an NPT thread, which can achieve a sealed connection with the cable II protective sleeve.

[0039] After cable II enters from the tail of accessory II, it passes through rubber ring II. After the center conductor of cable II is terminated with the pin contact, the shielding layer of cable II is turned outward to the 47th position of the tail flange of the socket housing and fixed with shielding wire. Then, the shielding layer is fixed by soldering to achieve a 360° electromagnetic shielding effect.

[0040] The square mounting sleeve is equipped with a mounting panel 6, which cooperates with the fixed square plate 5 on the fixed support and is fastened by combination screws, thereby fixing the entire socket to the fixed support to form a rigid fixed structure. The round sleeve on the plug is pressed and installed on the floating support by the upper pressure plate of the floating support and screws. The ring formed by the upper pressure plate 3 of the floating support and the base 4 is also provided with a rubber pad 35 for flexibly supporting the plug and plug cable assembly. The upper pressure plate is fixed to the base by combination screws and presses the elastic rubber pad to tighten the plug, achieving the purpose of flexible support, allowing the plug to move relative to the floating support, and improving the overall vibration resistance of the connector. The floating support mainly supports the plug, and the connector is mainly fixed by the fixed support. This installation and fixing method changes the installation state of the connector, making its center of gravity located near the support, which greatly reduces the overturning moment generated by gravity, inertia, etc., and improves the stability of the connector and its cable assembly. Both fixed and floating supports are directly fastened to the matching equipment using combination screws. The socket is fixed to the fixed support, and the plug is fixed to the floating support. This avoids the cantilever beam installation method between the connector and the equipment, reducing the overall installation center of gravity of the connector and its cable assembly relative to the matching equipment and the overturning moment during vibration and impact, effectively improving its installation strength, stability, and vibration resistance. The fixed and floating supports together define the mating state of the connector and its cable assembly. Even if the connection locking mechanism fails, it ensures that the internal pins and socket contacts are always in a good electrical contact state, providing a mechanical anti-loosening effect. This prevents electrical transmission interruption caused by the plug or socket becoming loose, dislodged, or falling off completely under any circumstances. It is suitable for applications with extremely high vibration resistance requirements and a low number of insertion / removal cycles.

[0041] Furthermore, the gaps between cable I and the plug housing, and between cable II and the socket housing, are treated with potting compound to secure cable I and cable II. To clearly illustrate the main structure of this application, cable I and cable II are not shown in the figures.

[0042] Furthermore, the connector described in this invention can achieve quick connection or disconnection using a bayonet design, specifically including but not limited to the following structure: a curved groove 36 is formed on the outer wall of the front end of the socket housing; correspondingly, a snap hole is formed on the inner wall of the connecting nut for riveting snaps 37; when the connector is inserted, as... Figure 9 As shown, the front end of the plug housing is inserted into the inner wall of the socket housing, and the front end of the socket housing is inserted into the inner wall of the connecting nut. The locking pin falls into the curved groove. Rotating the connecting nut causes the locking pin to slide upward along the curved groove to lock it in place; conversely, rotating the connecting nut causes the locking pin to slide downward along the curved groove to unlock it. The quick connection and disconnection of the connector is achieved through the cooperation of the locking pin and the curved groove.

[0043] Furthermore, a recess 38 is provided at the end of the curved groove. After the connector is fully inserted, the retaining pin falls into the recess, producing a crisp metallic clanging sound, serving as a confirmation of proper insertion. A corrugated spring 39 is also installed between the connecting nut and the plug housing. This spring provides stable elastic support between the retaining pin and the recess, preventing loosening and ensuring a reliable connection. Compared to traditional cylindrical springs, this reduces the axial installation space of the connector and also has functions such as noise reduction and vibration reduction. The number of curved grooves and retaining pins is unlimited. Figure 7 and Figure 8 The diagram shows the corresponding fit between the three grooves and the three clips.

[0044] Furthermore, a radial O-ring V40 is provided on the inner wall of the socket front end, and a shoulder 41 is provided on the outer wall of the plug housing. A mounting groove is provided on the front face of the shoulder, and an axial O-ring 42 is installed in the mounting groove. The inner end of the mounting groove is dovetail-shaped to prevent the axial O-ring from falling off. After the connector is properly mated, the radial O-ring V40 and the axial O-ring 42 achieve radial and axial sealing of the connector head, as shown below. Figure 9 As shown.

[0045] Furthermore, a convex circular structure 43 is provided on the outer circle of the plug shoulder, and a retaining shoulder 44 is provided on the inner wall of the connecting nut. When the plug and socket are engaged, the connecting nut retainer engages with the socket groove to axially separate and limit the connection. When the connector is subjected to extreme separation loads, the rear end face of the convex circular structure on the plug shoulder rigidly contacts the retaining shoulder of the connecting nut. The retaining shoulder axially limits the plug housing, preventing further backward separation. This avoids crushing caused by the infinite compression of the bellows spring and ensures that the radial O-ring at the head-and-seat engagement remains sealed, guaranteeing reliable sealing of the connection mechanism under extreme conditions. Figures 7-9 As shown.

[0046] Specifically, the diameter of the outer circle of the top of the shoulder convex structure is larger than the inner diameter of the inner anti-reverse shoulder of the connecting nut and slightly smaller than the inner diameter of the mating end of the connecting nut. The outer diameter of the shoulder (i.e. the outer diameter of the shoulder without the convex structure) is slightly smaller than the diameter of the inner circle of the connecting nut at the riveting clip. When installing the plug housing and the connecting nut, the top of the convex structure and the position of the clip can be staggered for installation, which is beneficial for the riveting clip of the connecting nut and avoids interference of the connecting nut with the installation of the plug housing after the clip is riveted.

[0047] Furthermore, when the socket housing and plug housing are mated, a keyway structure can be used to circumferentially limit the movement of the plug and socket, preventing radial rotation of the headstock after mating. Specifically, the inner wall of the socket housing mating end can have an inner flattened round structure (not shown in the attached diagram), and the outer circumference of the plug housing mating end can have a corresponding outer flattened round structure 45. The two work together to circumferentially limit the movement of the headstocks. The inner flattened round structure can be in the form of a groove, and the corresponding outer flattened round structure can be in the form of a key. Alternatively, the inner flattened round structure can be in the form of a key, and the corresponding outer flattened round structure can be in the form of a groove. The number of inner and outer flattened round structures is equal and their positions correspond. Only one set of inner and outer flattened round structures can be used to achieve circumferential limiting of the headstock, or multiple sets can be used.

[0048] The above description is merely an embodiment of the present invention and is not intended to limit the present invention in any way. The present invention can also have other embodiments based on the above structure and function, which will not be listed hereafter. Therefore, any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A vibration-resistant, anti-loosening, and environmentally resistant connector, comprising a plug and a socket, characterized in that... The plug is fixed on the floating support (1), and the socket is fixed on the fixed support (2); the floating support includes an upper pressure plate (3) and a base (4). The upper pressure plate and the base are detachably connected. A rubber pad (35) is also provided in the ring formed by the upper pressure plate and the base. The plug is fastened in the ring formed by the upper pressure plate and the base. The floating support forms a flexible support structure for the plug; a fixed square plate (5) is provided on the fixed support, and a corresponding mounting panel (6) is provided on the socket. The mounting panel and the fixed square plate are fixedly connected. The fixed support forms a rigid fixing structure for the socket. The plug includes a plug housing (7) and a connecting nut (8). The socket includes a socket housing (22). The inner wall of the socket housing at the mating end is also provided with a radial O-ring V (40). The plug housing is also provided with a shoulder (41). A corrugated spring (39) is installed between the shoulder and the tail of the connecting nut. The inner wall of the connecting nut is also provided with a backstop shoulder (44). The outer circle of the shoulder of the plug housing is also provided with a convex round structure (43). When the connector is in the mating state and subjected to extreme separation load, the convex round structure and the backstop shoulder are in rigid contact. The backstop shoulder axially limits the plug housing, preventing the corrugated spring from being compressed indefinitely, while ensuring that the radial O-ring V at the head socket mating point is always in a sealed state.

2. The vibration-resistant, anti-loosening, and environmentally resistant connector as described in claim 1, characterized in that... The plug also includes a round sleeve (9) and a tail accessory I (10). The plug housing is threadedly connected to the round sleeve, and the round sleeve is threadedly connected to the tail accessory I. The joint between the plug housing and the round sleeve, as well as the joint between the round sleeve and the tail accessory I, are fixed and sealed by welding. The round sleeve is also provided with a packing seal structure I. The packing seal structure I includes a rubber ring I (19) and gaskets I (20) on both sides of the rubber ring I. The axial force generated by the threaded rotation between the tail accessory I and the round sleeve pushes the gasket I to press the rubber ring I, so that a reliable seal is formed between the rubber ring I and the cable I. The socket also includes a square mounting sleeve (23) and a tail accessory II (24). The socket housing is threadedly connected to the square mounting sleeve, and the square mounting sleeve is threadedly connected to the tail accessory II. The joints between the socket housing and the square mounting sleeve, as well as the joints between the square mounting sleeve and the tail accessory II, are fixed and sealed by welding. The square mounting sleeve is also provided with a packing seal structure II. The packing seal structure II includes a rubber ring II (33) and gaskets II (34) on both sides of the rubber ring II. The axial force generated by the threaded rotation between the tail accessory II and the square mounting sleeve pushes the gasket II to press the rubber ring II, so that a reliable seal is formed between the rubber ring II and the cable II.

3. The vibration-resistant, anti-loosening, and environmentally resistant connector as described in claim 2, characterized in that... An insulator component I is assembled inside the plug housing, and the socket contact (11) is fixed in the insulator component I; a retaining ring I (14) is installed on the inner wall of the front end of the plug housing, and a protruding key I (15) is provided on the side wall of the insulator component I for axial limiting in cooperation with the protruding key II (16) on the inner wall of the plug housing. The insulator component I is fixed in the plug housing by axial limiting through the retaining ring I and the protruding key II.

4. The vibration-resistant, anti-loosening, and environmentally resistant connector as described in claim 2, characterized in that... A radial O-ring I (17) is provided between the round sleeve and the plug housing for sealing, and a radial O-ring II (18) is provided between the round sleeve and the tail accessory I for sealing; the tail end of the tail accessory I is also designed with an NPT thread to achieve a sealed connection with the cable I protective sleeve.

5. The vibration-resistant, anti-loosening, and environmentally resistant connector as described in claim 2, characterized in that... An insulator component II is assembled inside the socket housing, and a pin contact (25) is fixed in the insulator component II. A retaining ring II (28) is installed on the inner wall of the front end of the socket housing, and a protruding key III (29) is provided on the side wall of the insulator component II for axial limiting in cooperation with the protruding key IV (30) on the inner wall of the socket housing. The retaining ring II and the protruding key IV axially limit the insulator component IV and fix it in the socket housing.

6. The vibration-resistant, anti-loosening, and environmentally resistant connector as described in claim 2, characterized in that... A radial O-ring Ⅲ (31) is provided between the square mounting sleeve and the socket housing for sealing, and a radial O-ring Ⅳ (32) is also provided between the square mounting sleeve and the tail accessory Ⅱ for sealing; the tail end of the tail accessory Ⅱ is also designed with NPT thread, which can achieve a sealed connection with the cable Ⅱ protective sleeve.

7. The vibration-resistant, anti-loosening, and environmentally resistant connector as described in claim 2, characterized in that... The outer wall of the socket housing is also provided with a curved groove (36), and the inner wall of the connecting nut is also provided with a clip (37). The fast connection or separation of the connector is achieved by the clip cooperating with the curved groove.

8. The vibration-resistant, anti-loosening, and environmentally resistant connector as described in claim 1, characterized in that... An axial O-ring (42) is also installed on the front end face of the plug shoulder. After the head seat is inserted into place, the radial and axial O-rings are used to achieve radial and axial sealing of the head seat.

9. A cable assembly comprising a plug, a socket, cable I, and cable II, characterized in that... Cable I is connected to the plug, and cable II is connected to the socket, wherein the plug and socket adopt the structure described in any one of claims 1-8.

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