High-performance fool-proof metal shielding cable waterproof joint

Abstract

The invention discloses a high-performance fool-proof metal shielding cable waterproof joint which comprises a joint body, a flat nut arranged on the outer side of one end of the joint body, a fixing ring and a connecting ring arranged on the outer side of the joint body, a square sealing groove formed in the end face of one side of the connecting ring, an oval sealing ring arranged in the square sealing groove, and a fool-proof shielding ring arranged in an inner hole of the joint body. The inner circle of the fool-proof shielding ring is provided with bending elastic piece clamping jaws, the outer circle of the fool-proof shielding ring is provided with a conductive contact boss, one end of the inner side of the fool-proof shielding ring is provided with an abutting block, a bending limiting step is arranged between every two adjacent bending elastic piece clamping jaws, a sealing bush is arranged above the fool-proof shielding ring, and the outer side of the other end of the connector body is provided with a round nut. According to the high-performance fool-proof structure, the shielding ring is prevented from being installed reversely, the screwing degree of the nuts is controllable, the end face sealing adaptability is high, the salt spray corrosion resistance is excellent, and the high-performance fool-proof effect of threaded connection locking and looseness prevention is achieved.

Description

Technical Field

[0001] This invention relates to the field of new energy commercial vehicle technology, and more specifically, to a high-performance, foolproof, waterproof metal-shielded cable connector. Background Technology

[0002] In the field of cable connection, waterproof metal-shielded cable connectors are an important connecting accessory, widely used in industries such as new energy commercial vehicles. These connectors need to simultaneously meet multiple performance requirements, including waterproofing and dustproofing, cable fixation, electromagnetic shielding, and rust and corrosion resistance. Existing waterproof metal-shielded cable connectors typically consist of components such as a round nut, sealing bushing, shielding ring, connector body, sealing ring, and flat nut. Regarding the sealing structure, tightening the round nut compresses the sealing bushing, causing it to contract along its internal inclined surface and press against the cable's outer insulation layer, achieving a sealed fixation between the cable and the connector. Regarding the shielding structure, the inner ring of the shielding ring has multiple bent spring clips that contact the cable shielding layer, while the outer ring, through a convex structure, fits tightly against the inner wall of the connector body, forming a conductive path. Regarding the installation structure, the connector body is locked onto the equipment housing by the flat nut. The end-face sealing ring, under pressure, secures the connector body to the housing. While sealing between the mounting surfaces is crucial, the rapid development of the new energy vehicle industry and the increasing demand for mistake-proofing in mass production line assembly have led to several issues with existing connectors during actual installation. First, the shielding ring is prone to incorrect installation direction; operators may install it in the wrong direction, resulting in shielding failure or insufficient conductive contact area. Second, there is a lack of clear standards for nut tightening; insufficient tightening leads to poor sealing, while excessive tightening can damage the cable. Third, when the mounting surface has un-chamfered sheet metal holes, excessively large hole diameters, or eccentric hole positions, conventional sealing rings are easily cut or gaps are created, affecting the sealing effect. Fourth, some connectors use ordinary metal materials with insufficient salt spray corrosion resistance; after long-term use, the surface is prone to rust, shortening the product's lifespan. These problems increase the risk of assembly errors and make it difficult to meet the demands of mass production lines for mistake-proofing and high performance.

[0003] Secondly, most equipment uses threaded connections. However, threads are prone to stripping after prolonged use. The lack of a positioning structure makes it impossible to prevent accidental rotation of the nut and bolt, thus failing to guarantee long-term connection stability and causing adverse effects. Summary of the Invention

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, the present invention provides a high-performance foolproof metal shielded waterproof cable connector to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a high-performance foolproof metal shielded cable waterproof connector, comprising a connector body, a flat nut threadedly connected to one end of the connector body, a fixing ring and a connecting ring fixedly provided on the outer side of the connector body, a foolproof shielding ring provided in the inner hole of the connector body, multiple bending spring clips provided in the inner ring of the foolproof shielding ring, a bending limiting step provided between two adjacent bending spring clips at the end of the foolproof shielding ring, a detachable sealing bushing provided above the foolproof shielding ring, a stepped surface provided at the bottom end of the sealing bushing, a round nut threadedly connected to the other end of the connector body, a tightening sleeve being threadedly connected to the outer side of both the round nut and the flat nut, a push groove being provided on the inner side of both the round nut and the flat nut, a push rod being slidably provided in the push groove, a push block being fixedly connected to one end of the push rod, a push spring being connected to one side of the push block, the other end of the push spring being connected to the inner wall of the push groove, multiple clamping grooves being provided on one side of both the fixing ring and the connecting ring, and a clamping ball being rolled on one side of the push block.

[0006] The present invention is further configured such that the round nut is made of aerospace aluminum material, the surface of the round nut is coated with a colored anodized layer, the connector body is made of brass material, and the surface of the connector body has a chemical nickel plating layer.

[0007] The present invention is further configured such that a square sealing groove is provided on one end face of the connecting ring, and an elliptical sealing ring is detachably provided in the square sealing groove, and multiple anti-loosening protrusions are fixedly provided on both the inner and outer rings of the elliptical sealing ring.

[0008] The invention is further configured such that the outer ring of the anti-foolproof shielding ring is provided with a plurality of conductive contact bosses, one end of the inner side of the anti-foolproof shielding ring is fixedly provided with an abutment block, and the threaded fit between the round nut and the connector body is designed such that when tightened to the standard torque, it just reaches the root of the thread.

[0009] The present invention is further configured such that the bending limiting step has a 90-degree bending structure, and the bending limiting step abuts against the inner hole step surface of the connector body.

[0010] The present invention is further configured such that the conductive contact boss is in close contact with the inner wall of the inner hole of the connector body step.

[0011] The invention is further configured such that the inside of the round nut is provided with an inclined surface, and the round nut is pressed onto the arc surface of the sealing bushing.

[0012] The invention is further configured such that the inner wall edge of the clamping groove is designed with rounded corners and the bottom of the push groove is designed with an inward concave structure to prevent the clamping ball from falling directly.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention provides a high-performance, foolproof, waterproof metal-shielded cable connector, which has the following advantages: 1. By setting a bending limit step between the adjacent bending spring clips at the end of the anti-foolproof shielding ring, the bending limit step abuts against the step surface of the inner hole of the connector body during installation. If the shielding ring is installed in the opposite direction, it cannot be correctly positioned, effectively avoiding the problem of incorrect installation direction. The thread fit between the round nut and the connector body is precisely designed so that it reaches the root of the thread when tightened to the standard torque. The operator does not need to make additional judgments on the degree of tightening, avoiding the situation of poor sealing due to insufficient tightening or damage to the cable due to excessive tightening. The square sealing groove opened on the end face of the connector body is matched with the elliptical sealing ring with anti-loosening protrusions on the inner and outer rings. During installation, the elliptical sealing ring is deformed under pressure and fills the gap between the sealing groove and the mounting surface. It can effectively deal with the situation of sheet metal holes not being chamfered, hole diameter being too large, or hole position being eccentric, and avoid the sealing ring being cut or producing sealing gaps.

[0014] 2. The round nut of this high-performance foolproof metal shielded waterproof cable connector is made of aviation aluminum material with a colored anodized coating. The connector body is made of brass material with a chemical nickel plating. Both have excellent salt spray corrosion resistance, which can meet the requirements of long-term use for rust and corrosion prevention and extend the service life of the product. Both the round nut and the flat nut have a tightening sleeve on the outside and a push groove on the inside. The push groove contains a push rod, a push block, a push spring and a locking ball. In conjunction with the locking groove on one side of the fixing ring and the connecting ring, after tightening, the locking ball is locked into the corresponding locking groove. Then, the tightening sleeve presses against the push rod to form a locking limit for the round nut and the flat nut. This effectively prevents the threaded connection from accidentally rotating and loosening under vibration or external force, ensuring the stability of the long-term connection. Attached Figure Description

[0015] Figure 1 This is an exploded structural diagram of the round nut, sealing bushing, foolproof shielding ring, connector body and flat nut in this invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a cross-sectional view of the present invention with the flat nut and one-sided tightening sleeve removed. Figure 4 This is an exploded structural diagram of the connector body, elliptical sealing ring, and flat nut in this invention; Figure 5 This is an exploded view of the cross-section of the round nut and the connector body in this invention.

[0016] In the diagram: 1. Connector body; 2. Flat nut; 3. Retaining ring; 4. Connecting ring; 5. Square sealing groove; 6. Elliptical sealing ring; 7. Anti-foolproof shielding ring; 8. Bending spring clip claw; 9. Conductive contact boss; 10. Abutment block; 11. Bending limit step; 12. Sealing bushing; 13. Round nut; 14. Tightening sleeve; 15. Push groove; 16. Push rod; 17. Push block; 18. Push spring; 19. Clamping groove; 20. Clamping ball; 21. Anti-loosening protrusion. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0019] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0020] Please see Figures 1-5 A high-performance, foolproof, metal-shielded, waterproof cable connector includes a connector body 1. A flat nut 2 is threaded onto the outer side of one end of the connector body 1. A fixing ring 3 and a connecting ring 4 are fixedly mounted on the outer side of the connector body 1. A foolproof shielding ring 7 is located within the inner hole of the connector body 1. Multiple bending spring clips 8 are provided within the inner ring of the foolproof shielding ring 7. A bending limiting step 11 is provided between two adjacent bending spring clips 8 at the end of the foolproof shielding ring 7. A detachable sealing bushing 12 is provided above the foolproof shielding ring 7, and a stepped surface is provided at the bottom of the sealing bushing 12. The other end of the connector body 1 is threaded with a round nut 13. Both the round nut 13 and the flat nut 2 are threadedly connected to a tightening sleeve 14. Both the round nut 13 and the flat nut 2 are provided with push grooves 15. A push rod 16 is slidably provided in the push groove 15. One end of the push rod 16 is fixedly connected to a push block 17. A push spring 18 is connected to one side of the push block 17. The other end of the push spring 18 is connected to the inner wall of the push groove 15. Multiple clamping grooves 19 are provided on one side of the fixing ring 3 and the connecting ring 4. A clamping ball 20 is rolled on one side of the push block 17.

[0021] In this embodiment, firstly, when assembling the component, the two tightening sleeves 14 are rotated in the forward direction respectively, so that the tightening sleeves 14 move along the threads and no longer press the push rod 16 against one end. Then, the anti-misalignment shielding ring 7 is installed in the mounting inner hole of the connector body 1, and the conductive contact boss 9 on the outer ring of the anti-misalignment shielding ring 7 is tightly fitted with the inner wall of the connector body 1. Then, the bending limiting step 11 is abutted against the step surface of the inner hole of the connector body 1, ensuring good installation and no skewing. The setting of the bending limiting step 11 can prevent the anti-misalignment shielding ring 7 from being installed in reverse. Then, the sealing bushing 12 is installed in the inner hole of the connector body 1 and placed above the anti-misalignment shielding ring 7, and the step surface at the bottom of the sealing bushing 12 is tightly fitted with the end face of the connector body 1. Next, the round nut 13 is placed on the outside of the sealing bushing 12, and then the round nut 13 is rotated in the opposite direction so that the round nut 13 is threadedly engaged with the outer wall of the connector body 1. As the round nut 13 is gradually tightened, the edge of the locking groove 19 on one side of the fixing ring 3 will press against the outer wall of the locking ball 20. Due to the rounded corner structure design of the inner wall edge of the locking groove 19 and the spherical structure design of the locking ball 20, the locking ball 20 will roll out of the locking groove 19 and push the push block 17 on one side, causing the push block 17 to drive the top of the push rod 16 to slide out of the push groove 15. The push block 17 will cooperate with the top of the inner wall of the push groove 15 to press against the push spring 18 movably sleeved on the outside of the push rod 16. When the locking ball 20 rotates to the corresponding position of another locking groove 19, the push spring... 18. Pushing the push block 17 to slide and reset, and the push block 17 drives the push rod 16 to slide and reset. Then, the push block 17 pushes the locking ball 20 on one side, causing the locking ball 20 to roll and reset to the bottom of the push groove 15. The concave design at the bottom of the push groove 15 prevents the locking ball 20 from falling off the bottom of the push groove 15. Then, the locking ball 20 and other components will repeat the above actions until the round nut 13 is completely tightened, so that the locking ball 20 is locked into the corresponding locking groove 19 opened on one side of the fixing ring 3. At the same time, the inner inclined surface of the round nut 13 presses against the arc surface of the sealing bushing 12. Then, the tightening sleeve 14 provided on the outside of the round nut 13 is rotated in the opposite direction, so that the tightening sleeve 14 moves and resets along the thread in the opposite direction, so that the tightening sleeve 14 abuts against the push rod 16, preventing the push rod 16 and the push block 17 from sliding. The movement of the locking ball 20 is prevented, thus locking the round nut 13 and preventing accidental rotation. Then, the elliptical sealing ring 6 is installed in the square sealing groove 5 on one side of the connector body 1, ensuring it fits evenly and tightly within the groove. The anti-loosening protrusions 21 on the inner and outer rings of the elliptical sealing ring 6 enhance its stability within the square sealing groove 5. Finally, the flat nut 2 is fitted onto the threads of the connector body 1, and the locking ball 20 and other components, along with the tightening sleeve 14 on the outside of the flat nut 2, are operated in the same manner. This causes the locking ball 20 in the push groove 15 on the inner side of the flat nut 2 to engage with the corresponding locking groove 19 on one side of the connecting ring 4, thus locking and limiting the flat nut 2 and preventing accidental rotation.This completes the assembly of the connector.

[0022] Please see Figures 1-5 As a further implementation of the overall equipment: the round nut 13 is made of aviation aluminum material, the surface of the round nut 13 is coated with a colored anodized layer, the connector body 1 is made of brass material, and the surface of the connector body 1 has a chemical nickel plating layer.

[0023] A square sealing groove 5 is provided on one end face of the connecting ring 4. An elliptical sealing ring 6 is detachably provided in the square sealing groove 5. Multiple anti-loosening protrusions 21 are fixed on both the inner and outer rings of the elliptical sealing ring 6.

[0024] The outer ring of the anti-foolproof shielding ring 7 is provided with multiple conductive contact bosses 9, and the inner end of the anti-foolproof shielding ring 7 is fixed with an abutment block 10. The threaded fit between the round nut 13 and the connector body 1 is designed so that when tightened to the standard torque, it just reaches the root of the thread.

[0025] The bending and limiting step 11 has a 90-degree bending structure, and the bending and limiting step 11 abuts against the inner hole step surface of the joint body 1.

[0026] The conductive contact boss 9 is in close contact with the inner wall of the inner hole of the step in the connector body 1.

[0027] The round nut 13 has an inclined surface inside, and the round nut 13 is pressed onto the arc surface of the sealing bushing 12.

[0028] The inner edge of the clamping groove 19 is designed with rounded corners, and the bottom of the push groove 15 is designed with a concave structure to prevent the clamping ball 20 from falling directly.

[0029] More specifically, when this equipment is needed, first install the threaded end of the high-performance foolproof metal shielded cable waterproof connector onto the through hole in the sheet metal of the enclosure. Then, use a wrench to tighten the flat nut 2 for fixation and lock the flat nut 2 to its limit position. Then, make the elliptical sealing ring 6 contact the sheet metal surface of the enclosure. Under the pressure of the end face of the connector body 1, the elliptical sealing ring 6 deforms and fills the gap between the square sealing groove 5 and the sheet metal surface, achieving a seal between the connector and the enclosure. The square sealing groove 5, together with the elliptical sealing ring 6 with anti-loosening protrusions 21, can avoid problems such as the sealing ring being cut or the sealing gap being caused by the sheet metal hole not being chamfered, the mounting hole size being too large, or eccentricity. Then, let the cable pass through the round nut 13 end. After the connector is connected, the cable insulation layer is in the deformation sealing position at the upper end of the sealing bushing 12. The cable shielding layer is in good contact with the bending spring clip 8 of the inner ring of the foolproof shielding ring 7. The bending spring clip 8 transmits the electromagnetic interference signal of the cable shielding layer to the connector body 1 through the conductive contact boss 9, forming a complete shielded conductive path. Tighten the round nut 13 to the root of the thread, and then lock and limit the round nut 13. At this time, the inner inclined surface of the round nut 13 presses the sealing bushing 12, causing the sealing bushing 12 to contract along the inclined surface and press against the insulation layer of the cable, thereby achieving the sealing between the cable and the connector and fixing the cable. Tightening the round nut 13 to the root of the thread achieves the standard sealing and fixing effect, realizing the foolproof control of the tightening degree.

[0030] In summary, when using or operating the overall equipment: First, when assembling the component, rotate both tightening sleeves 14 in the forward direction to move them along the threads and prevent them from pressing one end of the push rod 16. Then, install the anti-misalignment shielding ring 7 in the mounting inner hole of the connector body 1, ensuring that the conductive contact boss 9 on the outer ring of the anti-misalignment shielding ring 7 fits tightly against the inner wall of the connector body 1. Next, ensure that the bending limiting step 11 abuts against the step surface of the inner hole of the connector body 1, maintaining a good fit without misalignment. The bending limiting step 11 prevents the anti-misalignment shielding ring 7 from being installed in reverse. Finally, install the sealing bushing 12 in the inner hole of the connector body 1 and place it above the anti-misalignment shielding ring 7, ensuring that the step surface at the bottom of the sealing bushing 12... The end face of the connector body 1 is tightly fitted. Then, the round nut 13 is placed on the outside of the sealing bushing 12, and then the round nut 13 is rotated in the opposite direction so that the round nut 13 is threadedly connected to the outer wall of the connector body 1. As the round nut 13 is gradually tightened, the edge of the locking groove 19 on one side of the fixing ring 3 will squeeze the outer wall of the locking ball 20. Due to the rounded corner structure design of the inner wall edge of the locking groove 19 and the spherical structure design of the locking ball 20, the locking ball 20 will roll out of the locking groove 19, and the locking ball 20 will push the push block 17 on one side, so that the push block 17 drives the top of the push rod 16 to slide out of the push groove 15, and the push block 17 will cooperate with the top of the inner wall of the push groove 15 to squeeze the push spring 18 movably sleeved on the outside of the push rod 16. When the locking ball 20 rotates to another locking groove 1, When position 9 is reached, the push spring 18 pushes the push block 17 to slide back to its original position, and the push block 17 drives the push rod 16 to slide back to its original position. Then, the push block 17 pushes the locking ball 20 on one side, causing the locking ball 20 to roll back to the bottom of the push groove 15. The concave design at the bottom of the push groove 15 prevents the locking ball 20 from falling off the bottom of the push groove 15. Then, the locking ball 20 and other components will repeat the above actions until the round nut 13 is completely tightened, so that the locking ball 20 is locked into the corresponding locking groove 19 opened on one side of the fixing ring 3. At the same time, the inner inclined surface of the round nut 13 presses against the arc surface of the sealing bushing 12. Then, the tightening sleeve 14 provided on the outside of the round nut 13 is rotated in the opposite direction, so that the tightening sleeve 14 moves back to its original position along the thread, so that the tightening sleeve 14 abuts against the push rod 16, preventing... The thrust rod 16 and push block 17 slide, simultaneously preventing the movement of the locking ball 20, thus locking the round nut 13 and preventing accidental rotation of the round nut. Subsequently, the elliptical sealing ring 6 is installed in the square sealing groove 5 opened on one end face of the connector body 1, so that the elliptical sealing ring 6 fits evenly and tightly in the groove. The anti-loosening protrusions 21 on the inner and outer rings of the elliptical sealing ring 6 can enhance its stability in the square sealing groove 5. Finally, the flat nut 2 is installed on the thread of the connector body 1 for adaptation, and the locking ball 20 and other components and the tightening sleeve 14 set on the outside of the flat nut 2 are operated in the same way, so that the locking ball 20 in the push groove 15 on the inner side of the flat nut 2 is engaged into the corresponding locking groove 19 opened on one side of the connecting ring 4, thereby locking and limiting the flat nut 2.To prevent accidental rotation of the flat nut 2, thus completing the assembly of the joint.

[0031] When using this equipment, first install the threaded end of the high-performance foolproof metal shielded cable waterproof connector onto the through hole in the sheet metal of the enclosure. Then, use a wrench to tighten the flat nut 2 for fixation and lock the flat nut 2 to its limit position. Next, make the elliptical sealing ring 6 contact the sheet metal surface of the enclosure. Under the pressure of the end face of the connector body 1, the elliptical sealing ring 6 deforms and fills the gap between the square sealing groove 5 and the sheet metal surface, achieving a seal between the connector and the enclosure. The square sealing groove 5, together with the elliptical sealing ring 6 with anti-loosening protrusions 21, can avoid problems such as the sealing ring being cut or the sealing gap being caused by the sheet metal hole not being chamfered, the mounting hole size being too large, or eccentricity. Then, let the cable pass through the connector from the end of the round nut 13. The cable insulation layer is in the deformation sealing position at the upper end of the sealing bushing 12. The cable shielding layer is in good contact with the bending spring clip 8 of the inner ring of the foolproof shielding ring 7. The bending spring clip 8 transmits the electromagnetic interference signal of the cable shielding layer to the joint body 1 through the conductive contact boss 9, forming a complete shielding conductive path. Tighten the round nut 13 to the root of the thread, and then lock and limit the round nut 13. At this time, the inner inclined surface of the round nut 13 presses the sealing bushing 12, causing the sealing bushing 12 to contract along the inclined surface and press on the insulation layer of the cable, realizing the sealing between the cable and the joint and the fixing of the cable. Tightening the round nut 13 to the root of the thread achieves the standard sealing and fixing effect, realizing the foolproof control of the tightening degree.

[0032] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-performance, foolproof, waterproof metal-shielded cable connector, comprising a connector body (1), characterized in that: One end of the connector body (1) is threaded with a flat nut (2). A fixing ring (3) and a connecting ring (4) are fixed on the outside of the connector body (1). An anti-foolproof shielding ring (7) is provided in the inner hole of the connector body (1). The inner ring of the anti-foolproof shielding ring (7) is provided with multiple bent spring clips (8). A bending limit step (11) is provided between two adjacent bent spring clips (8) at the end of the anti-foolproof shielding ring (7). A sealing bushing (12) is detachably provided above the anti-foolproof shielding ring (7). A stepped surface is provided at the bottom end of the sealing bushing (12). The other end of the connector body (1) is threaded with a circular... Nut (13), the outer sides of the round nut (13) and the flat nut are connected by a screw sleeve (14) through a thread. The inner sides of the round nut (13) and the flat nut (2) are provided with push grooves (15). A push rod (16) is slidably provided in the push groove (15). A push block (17) is fixedly connected to one end of the push rod (16). A push spring (18) is connected to one side of the push block (17). The other end of the push spring (18) is connected to the inner wall of the push groove (15). Multiple clamping grooves (19) are provided on one side of the fixing ring (3) and the connecting ring (4). A clamping ball (20) is rolled on one side of the push block (17).

2. The high-performance foolproof metal-shielded waterproof cable connector according to claim 1, characterized in that: The round nut (13) is made of aviation aluminum material, the surface of the round nut (13) is coated with a colored anodized layer, the connector body (1) is made of brass material, and the surface of the connector body (1) has a chemical nickel plating layer.

3. The high-performance foolproof metal-shielded waterproof cable connector according to claim 2, characterized in that: A square sealing groove (5) is provided on one end face of the connecting ring (4), and an elliptical sealing ring (6) is detachably provided in the square sealing groove (5). Multiple anti-loosening protrusions (21) are fixed on both the inner and outer rings of the elliptical sealing ring (6).

4. A high-performance, foolproof, waterproof metal-shielded cable connector according to claim 3, characterized in that: The outer ring of the anti-foolproof shielding ring (7) is provided with multiple conductive contact bosses (9), and an abutment block (10) is fixedly provided on one end of the inner side of the anti-foolproof shielding ring (7). The thread fit between the round nut (13) and the connector body (1) is designed so that when tightened to the standard torque, it just reaches the root of the thread.

5. A high-performance, foolproof, waterproof metal-shielded cable connector according to claim 4, characterized in that: The bending limiting step (11) has a 90-degree bending structure, and the bending limiting step (11) abuts against the inner hole step surface of the connector body (1).

6. A high-performance, foolproof, waterproof metal-shielded cable connector according to claim 5, characterized in that: The conductive contact boss (9) is in close contact with the inner wall of the inner hole of the step of the connector body (1).

7. A high-performance, foolproof, waterproof metal-shielded cable connector according to claim 6, characterized in that: The round nut (13) has an inclined surface inside, and the round nut (13) is pressed onto the arc surface of the sealing bushing (12).

8. A high-performance, foolproof, waterproof metal-shielded cable connector according to claim 7, characterized in that: The inner edge of the clamping groove (19) is designed with rounded corners, and the bottom of the push groove (15) is designed with a concave structure.

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