A cable penetration sealing structure

Abstract

The utility model relates to a cable penetration sealing structure, including a shell barrel, a nut, a sealing body and a compression sleeve. The shell barrel passes through a boundary plate, the nut is threadedly connected to one end of the shell barrel, and the boundary plate is arranged between the other end of the shell barrel and the nut. A positioning platform is arranged in the shell barrel, the sealing body and the compression sleeve are both fitted in the shell barrel, and the sealing body is arranged between the positioning platform and the compression sleeve, and the bonding surface between the sealing body and the compression sleeve is a conical surface. With the technical solution provided by the utility model, the shell barrel and the nut form a first layer of barrier for the cable, while the sealing body and the compression sleeve form a second layer of barrier for the cable, thereby improving the sealing reliability of the penetration electrical connector. The bonding surface between the sealing body and the compression sleeve is set as a conical surface, which prolongs the trajectory length of dust, water droplets and other impurities entering the cable. In addition, the impurities themselves have tension, which improves the sealing performance of the sealing body and the compression sleeve, ensures the normal use of the penetration electrical connector, and prolongs the service life of the penetration electrical connector.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical connectors, and in particular relates to a cable penetration plate sealing structure. Background Art

[0002] At present, in all aspects of people's daily life, in order to achieve the connection between electrical input and output, electrical connectors are often used. The connector wraps the cable inside it to isolate the internal cable from the external environment. According to the different installation structures of the connector, common connectors mainly include plugs, sockets, MC connectors, through-board connectors, etc.

[0003] For example, the patent document with the publication number of "CN208970852U" discloses a through-board high-voltage connector, which includes a shielding shell, a baffle, a crimping ring, an outer shell, and a back cover. The shielding shell includes an axial sleeve and elastic contacts arranged radially. The axial sleeve is used to cover the end stripping part of the cable, and the inner end of the axial sleeve is arranged to fit the shielding layer of the cable. The outer end of the axial sleeve is provided with an outer ring folded radially outward. A number of elastic contacts are evenly distributed on the outer circumference of the outer ring. Each elastic contact is arranged along the outer circumferential surface of the corresponding axial sleeve. The elastic force of the contact point of the elastic contact is applied radially outward. The baffle is sleeved in the middle ring cavity formed by the combination of the elastic contact and the axial sleeve. The baffle is provided with an avoidance groove corresponding to the position of the elastic contact. The patented technical solution enables the shielding shell of the connector of the fixed cable to be connected to the shielding interface of the equipment only once, with circumferential closure, high connection reliability and good shielding efficiency.

[0004] However, common through-board electrical connectors generally include a shell barrel and a nut. The nut is connected to one end of the shell barrel through a threaded pair, and the boundary plate is clamped between the other end of the shell barrel and the nut. For this type of through-board electrical connector, the shell barrel, nut and other components are exposed to the external environment. If the shell barrel, nut and other components have defects such as wear and leakage, impurities such as dust and water droplets in the environment will enter the through-board electrical connector, affecting the normal use of the through-board electrical connector, endangering the safety of the circuit system, and affecting the service life of the through-board electrical connector. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a cable penetration plate sealing structure.

[0006] The utility model provides a cable plate penetration sealing structure, comprising a shell barrel, a nut, a sealing body and a compression sleeve, wherein the shell barrel penetrates a boundary plate, the nut is threadedly connected to one end of the shell barrel, and the boundary plate is arranged between the other end of the shell barrel and the nut, a positioning platform is arranged in the shell barrel, the sealing body and the compression sleeve are both fitted in the shell barrel, and the sealing body is arranged between the positioning platform and the compression sleeve, and the joint surface between the sealing body and the compression sleeve is a conical surface.

[0007] The cable plate-penetrating sealing structure further comprises a limiting member, which is sleeved in the shell tube, and the compression sleeve is clamped between the sealing body and the limiting member.

[0008] The limiting member comprises a first screw sleeve and a second screw sleeve, both of which are in the shape of a semi-cylinder, and the first screw sleeve and the second screw sleeve are opposite to each other.

[0009] The surface of the first screw sleeve is also provided with a tenon, and the surface of the second screw sleeve is also provided with a tenon groove. When the first screw sleeve and the second screw sleeve are opposite to each other, the tenon is fitted into the tenon groove.

[0010] The inner surface of the sealing body is also provided with a spiral corrugated groove.

[0011] The sealing body comprises a first sealing sleeve and a second sealing sleeve. Both the first sealing sleeve and the second sealing sleeve are in the shape of a semi-circular truncated cone, and the first sealing sleeve and the second sealing sleeve are opposite to each other.

[0012] The surface of the shell barrel is also provided with at least one pair of milling flattening tables, and each pair of milling flattening tables is symmetrically arranged on both sides of the central axis of the shell barrel.

[0013] The shell cylinder also penetrates a bushing, and the bushing is clamped between the nut and the boundary plate.

[0014] A first threading hole is provided on the surface of the nut, and a second threading hole is provided on the surface of the bushing. The first threading hole and the second threading hole are staggered with each other in the radial direction of the bushing.

[0015] The surface of the shell cylinder is provided with a keyway, and the surface of the bushing is provided with a convex key. When the shell cylinder passes through the bushing, the convex key is sleeved in the keyway.

[0016] The beneficial effect of the utility model is that: by adopting the technical scheme provided by the utility model, the shell tube and the nut form a first barrier for the cable, and the sealing body and the compression sleeve form a second barrier for the cable, making it difficult for impurities such as dust and water droplets in the environment to invade the cable, thereby improving the sealing reliability of the through-board electrical connector. In addition, since the bonding surface between the sealing body and the compression sleeve is set as a conical surface, the trajectory length of impurities such as dust and water droplets entering the cable is extended, and the impurities themselves have tension, which further increases the difficulty of impurities invading the cable, improves the shielding performance and sealing performance of the sealing body and the compression sleeve, ensures the normal use of the through-board electrical connector, protects the safety of the circuit system, and extends the service life of the through-board electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is an exploded view of the utility model.

[0019] In the figure: 1-shell, 2-nut, 3-sealing body, 4-pressing sleeve, 5-boundary plate, 6-positioning platform, 7-limiting member, 8-first screw sleeve, 9-second screw sleeve, 10-first sealing sleeve, 11-second sealing sleeve, 12-bushing, 13-first sealing ring, 14-second sealing ring, 15-third sealing ring. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described below in conjunction with the accompanying drawings, but the protection scope required is not limited to the above;

[0021] The utility model provides a cable penetration plate sealing structure, such as Figure 1 , Figure 2 As shown, it includes a shell barrel 1, a nut 2, a sealing body 3 and a pressing sleeve 4. The shell barrel 1 passes through a boundary plate 5. The nut 2 is screwed to one end of the shell barrel 1, and the boundary plate 5 is arranged between the other end of the shell barrel 1 and the nut 2. A positioning platform 6 is arranged in the shell barrel 1. The sealing body 3 and the pressing sleeve 4 are both fitted in the shell barrel 1, and the sealing body 3 is arranged between the positioning platform 6 and the pressing sleeve 4. The bonding surface between the sealing body 3 and the pressing sleeve 4 is a conical surface.

[0022] By adopting the technical solution provided by the utility model, the shell barrel and the nut form a first barrier for the cable, while the sealing body and the compression sleeve form a second barrier for the cable, making it difficult for impurities such as dust and water droplets in the environment to invade the cable, thereby improving the sealing reliability of the through-board electrical connector. In addition, since the bonding surface between the sealing body and the compression sleeve is set as a conical surface, the trajectory length of impurities such as dust and water droplets entering the cable is extended, and the impurities themselves have tension, which further increases the difficulty of impurities invading the cable, improves the shielding performance and sealing performance of the sealing body and the compression sleeve, ensures the normal use of the through-board electrical connector, protects the safety of the circuit system, and extends the service life of the through-board electrical connector.

[0023] Specifically, the cable penetration sealing structure further includes a stopper 7, which is sleeved in the shell barrel 1, and the compression sleeve 4 is clamped between the sealing body 3 and the stopper 7. With the technical solution of the utility model, by setting the stopper 7 to be sleeved in the shell barrel 1, the stopper 7 squeezes the compression sleeve 4 and the sealing body 3, and the squeezing force causes the compression sleeve 4 and the sealing body 3 to expand the shell barrel 1, further improving the sealing effect of the penetration electrical connector.

[0024] In addition, the limiting member 7 includes a first screw sleeve 8 and a second screw sleeve 9, both of which are semi-cylindrical in shape, and the first screw sleeve 8 and the second screw sleeve 9 are opposite to each other. The surface of the first screw sleeve 8 is also provided with a tenon, and the surface of the second screw sleeve 9 is also provided with a tenon groove. When the first screw sleeve 8 and the second screw sleeve 9 are opposite to each other, the tenon fits into the tenon groove. Preferably, the surfaces of the first screw sleeve 8 and the second screw sleeve 9 are also provided with straight knurling. By adopting the technical solution of the utility model, by setting the limiting member 7 as a combination of the first screw sleeve 8 and the second screw sleeve 9, it is convenient for operators to load, unload and replace the limiting member 7, and it is convenient to replace partially damaged parts in the through-board electrical connector, thereby ensuring that the through-board electrical connector is stable and reliable in use.

[0025] In addition, a spiral corrugated groove is provided on the inner surface of the wire sealing body 3. The corrugated groove squeezes the cable, so that the cable is firmly sheathed in the wire sealing body 3, effectively preventing the cable from being loosened.

[0026] In addition, the sealing body 3 includes a first sealing sleeve 10 and a second sealing sleeve 11, both of which are in the shape of a semi-conical cone, and the first sealing sleeve 10 and the second sealing sleeve 11 are opposite to each other. Preferably, the pressing sleeve 4 is in the shape of a non-closed circular ring as a whole. By adopting the technical solution of the utility model, by setting the sealing body 3 as a combination of the first sealing sleeve 10 and the second sealing sleeve 11, it is convenient for operators to load, unload and replace the sealing body 3, and it is convenient to replace partially damaged parts in the through-board electrical connector, thereby ensuring that the through-board electrical connector is stable and reliable in use.

[0027] Furthermore, at least one pair of milling flattening tables is provided on the surface of the shell barrel 1, and each pair of milling flattening tables is symmetrically arranged on both sides of the central axis of the shell barrel 1. When an operator assembles the through-board electrical connector provided by the utility model, it is convenient for the operator to use a labor tool to clamp the shell barrel 1 and apply a rotational torque to the shell barrel 1.

[0028] In addition, the shell barrel 1 also passes through the bushing 12, and the bushing 12 is clamped between the nut 2 and the boundary plate 5. Specifically, the surface of the shell barrel 1 is provided with a first recessed groove, and a first sealing ring 13 is provided in the first recessed groove, and at least a part of the surface of the first sealing ring 13 is in contact with the surface of the boundary plate 5. The surface of the shell barrel 1 is also provided with a second recessed groove, and a second sealing ring 14 is provided in the second recessed groove, and at least a part of the surface of the second sealing ring 14 is in contact with the surface of the bushing 12. The surface of the bushing 12 is also provided with a third recessed groove, and a third sealing ring 15 is provided in the third recessed groove, and at least a part of the surface of the third sealing ring 15 is in contact with the surface of the boundary plate 5. By adopting the technical solution of the utility model, by providing the bushing 12, the first sealing ring 13, the second sealing ring 14 and the third sealing ring 15, the bushing 12, the first sealing ring 13, the second sealing ring 14 and the third sealing ring 15 serve as barriers to impurities such as dust and water droplets in the external environment, thereby increasing the sealing and reliability of the through-board electrical connector, and helping to further extend the service life of the through-board electrical connector.

[0029] In addition, a first threading hole is provided on the surface of the nut 2, and a second threading hole is provided on the surface of the bushing 12, and the first threading hole and the second threading hole are staggered with each other in the radial direction of the bushing 12. By adopting the technical solution of the utility model, when assembling the through-board electrical connector provided by the utility model, the operator can also use a thin-diameter metal wire to pass through the first threading hole and the second threading hole to tie the nut 2 and the bushing 12, so that the connection between the nut 2, the bushing 12 and other parts is tighter, further improving the sealing performance of the through-board electrical connector. A keyway is provided on the surface of the shell 1, and a convex key is provided on the surface of the bushing 12. When the shell 1 passes through the bushing 12, the convex key fits into the keyway.

Claims

1. A cable penetration sealing structure, characterized in that: The invention comprises a shell barrel (1), a nut (2), a sealing body (3) and a pressing sleeve (4); the shell barrel (1) passes through a boundary plate (5); the nut (2) is threadedly connected to one end of the shell barrel (1), and the boundary plate (5) is arranged between the other end of the shell barrel (1) and the nut (2); a positioning platform (6) is arranged inside the shell barrel (1); the sealing body (3) and the pressing sleeve (4) are both fitted inside the shell barrel (1), and the sealing body (3) is arranged between the positioning platform (6) and the pressing sleeve (4); and the joint surface between the sealing body (3) and the pressing sleeve (4) is a conical surface.

2. A cable penetration sealing structure according to claim 1, characterized in that: The cable plate-penetrating sealing structure further comprises a limiting member (7), the limiting member (7) being sleeved in the shell cylinder (1), and the pressing sleeve (4) being clamped between the sealing body (3) and the limiting member (7).

3. A cable plate sealing structure according to claim 2, characterized in that: The limiting member (7) comprises a first screw sleeve (8) and a second screw sleeve (9); the first screw sleeve (8) and the second screw sleeve (9) are both in a semi-cylindrical shape, and the first screw sleeve (8) and the second screw sleeve (9) are arranged opposite to each other.

4. A cable penetration sealing structure as claimed in claim 3, characterized in that: The surface of the first screw sleeve (8) is also provided with a tenon, and the surface of the second screw sleeve (9) is also provided with a tenon groove. When the first screw sleeve (8) and the second screw sleeve (9) are opposite to each other, the tenon is fitted into the tenon groove.

5. A cable penetration sealing structure according to claim 1, characterized in that: The inner surface of the sealing body (3) is also provided with a spiral corrugated groove.

6. A cable plate sealing structure according to claim 1, 2 or 5, characterized in that: The sealing body (3) comprises a first sealing sleeve (10) and a second sealing sleeve (11); the first sealing sleeve (10) and the second sealing sleeve (11) are both in the shape of a semi-circular truncated cone, and the first sealing sleeve (10) and the second sealing sleeve (11) are arranged opposite to each other.

7. A cable plate sealing structure according to claim 1, characterized in that: The surface of the shell cylinder (1) is also provided with at least one pair of milling flattening tables, and each pair of milling flattening tables is symmetrically arranged on both sides of the central axis of the shell cylinder (1).

8. A cable plate sealing structure according to claim 1, 2 or 7, characterized in that: The shell cylinder (1) also passes through a bushing (12), and the bushing (12) is clamped between the nut (2) and the boundary plate (5).

9. A cable plate sealing structure according to claim 8, characterized in that: A first threading hole is provided on the surface of the nut (2), and a second threading hole is provided on the surface of the bushing (12), wherein the first threading hole and the second threading hole are staggered with each other in the radial direction of the bushing (12).

10. A cable plate sealing structure according to claim 8, characterized in that: The surface of the shell cylinder (1) is provided with a keyway, and the surface of the bushing (12) is provided with a convex key. When the shell cylinder (1) passes through the bushing (12), the convex key is sleeved in the keyway.

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