A waterproof cable assembly based on modular design

Abstract

The present invention discloses a waterproof cable assembly based on modular design, which relates to the field of waterproof cable assemblies, including a waterproof connector, which is a cylindrical shell structure, and both ends of the waterproof connector are provided with a circular groove for the corresponding cable sheath to extend into, and a sealing structure is provided in the circular groove. The present invention provides a technology for enhancing the seal by pressurizing and corrugated surface contact, and the pressing sheet will be evenly pressed on the outer periphery of the wire core, so that any position of the third rubber sealing ring, the second elastic metal ring, the second rubber sealing ring, the first elastic metal ring and the first rubber sealing ring on the outer periphery of the corresponding wire core can maintain the same pressure, and assist the third rubber sealing ring, the second elastic metal ring, the second rubber sealing ring, the first elastic metal ring and the first rubber sealing ring to better seal at the connection between the cable sheath and the waterproof connector, with multiple seals and good sealing effect.

Description

Technical Field

[0001] The invention relates to the field of waterproof cable assemblies, and in particular to a waterproof cable assembly based on modular design. Background Art

[0002] Cable waterproofing generally uses cable heads for sealing to prevent water vapor from entering. However, if higher waterproof performance is required, sealants are usually used for sealing. Although the sealing effect is good, it is inconvenient to disassemble and replace it later because it is fixed with sealants.

[0003] Therefore, it is necessary to propose a waterproof cable assembly based on modular design to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a waterproof cable assembly based on modular design to solve the problem that the cable waterproofing is generally fixed with sealant, which makes it inconvenient to disassemble and replace it later.

[0005] To achieve the above object, the present invention provides the following technical solutions: a waterproof cable assembly based on modular design, comprising a waterproof connector, the waterproof connector is a cylindrical shell structure, a conductive metal column for connecting the cable sheaths at both ends of the waterproof connector is arranged in the middle of the waterproof connector, and both ends of the waterproof connector are provided with circular grooves for the corresponding cable sheaths to extend into;

[0006] A sealing structure is provided in the circular groove, and the sealing structure includes a first rubber sealing ring, a first elastic metal ring, a second rubber sealing ring, a second elastic metal ring and a third rubber sealing ring which are fixed in sequence on the inner wall of the circular groove. A wire core is provided in the middle of the cable sheath, and a portion of the outer surface of the cable sheath extending into the circular groove is removed. The first rubber sealing ring is movably fitted at the outer ring of the cable sheath, the second rubber sealing ring is sealed at the edge of the cable sheath, the second elastic metal ring is sealed and pressed at the outer ring of the wire core, and the third rubber sealing ring is sealed at the outer ring of the wire core near the conductive metal column.

[0007] The waterproof connector is provided with a first chamber and a second chamber inside, the first chamber is an annular structure arranged around a circular groove, the second chamber is a rectangular groove structure, a plurality of second chambers are provided, and the plurality of second chambers are distributed at equal angles along the outer circumference of the first chamber, a pressing piece is movably provided in the first chamber, a pressing plate is movably provided in the second chamber, the first chamber and the second chamber are connected through an air hole, a spring is fixedly provided on a side of the pressing plate close to the pressing piece, and an end of the spring away from the pressing plate is fixedly connected to the pressing piece;

[0008] The outer surface of the waterproof connector is connected with a screw rod through threaded cooperation, and the end of the screw rod is rotatably connected to a side of the pressing plate away from the pressing sheet.

[0009] Preferably, the first rubber sealing ring, the first elastic metal ring, the second rubber sealing ring, the second elastic metal ring and the third rubber sealing ring are distributed in sequence from a position far away from the conductive metal column to a position close to the conductive metal column.

[0010] Preferably, a spring groove for the spring to move through is provided on the structure between the first chamber and the second chamber.

[0011] Preferably, the pressure plate is in a rectangular plate-shaped structure, and the outer periphery of the pressure plate is movably fitted with the inner wall of the outer periphery of the second chamber and remains sealed.

[0012] Preferably, the pressing sheet is an annular sheet structure, the pressing sheet is movably fitted on the inner ring wall of the first chamber close to the wire core, and the pressing sheet is elastic.

[0013] Preferably, the third rubber sealing ring, the second rubber sealing ring and the first rubber sealing ring are all annular structures, and the inner ring walls of the third rubber sealing ring, the second rubber sealing ring and the first rubber sealing ring remain smooth.

[0014] Preferably, the second elastic metal ring and the first elastic metal ring are both annular in structure, and the inner ring walls of the second elastic metal ring and the first elastic metal ring are corrugated.

[0015] Preferably, a conductive metal ring is fixedly provided at one end of the conductive metal column close to the cable sheath, and the conductive metal ring is in a ring-shaped metal mesh structure, and the conductive metal ring is sleeved on the outer ring of the wire core.

[0016] Preferably, the conductive metal ring is elastic, and when the inner ring wall of the second elastic metal ring is pressed onto the outer surface of the conductive metal ring, a corrugated structure is formed on the outer ring of the conductive metal ring.

[0017] Preferably, the waterproof connector and the screw are both insulating structures, and the conductive metal column is a conductive structure.

[0018] Technical effects and advantages of the present invention:

[0019] The present invention provides a technology for enhancing sealing by means of pressurization and corrugated surface contact;

[0020] The pressing sheet will be pressed evenly on the outer periphery of the wire core, so that any position of the third rubber sealing ring, the second elastic metal ring, the second rubber sealing ring, the first elastic metal ring and the first rubber sealing ring corresponding to the outer periphery of the wire core can maintain the same pressure, and assist the third rubber sealing ring, the second elastic metal ring, the second rubber sealing ring, the first elastic metal ring and the first rubber sealing ring to better seal at the connection between the cable sheath and the waterproof connector, with multiple sealing and good sealing effect;

[0021] The spring compression combined with the air pressure pushes the pressing piece to keep its position without deviation and achieve good sealing effect.

[0022] The air pressure is combined with the pressure of the spring, so that when the first elastic metal ring and the second elastic metal ring are attached to the corresponding cable sheath, wire core or outer surface of the conductive metal ring, a corrugated structure can be formed on the outer surface of the cable sheath, wire core or conductive metal ring, and the corrugated structure increases the sealing performance;

[0023] When the cable sheath is removed, the screw rod can be twisted in the reverse direction. At this time, the spring is reset and the pressing sheet can be stretched, so that the first rubber sealing ring, the first elastic metal ring, the second rubber sealing ring, the second elastic metal ring and the third rubber sealing ring are smoothly separated from the corresponding cable sheath or the surface of the wire core without sticking to each other, which is convenient for disassembly and reuse, replacing the method of fixing with glue in the prior art;

[0024] The conductive metal ring is arranged on the outer ring of the wire core. The arrangement of the conductive metal ring enables the wire core to have a certain degree of expansion and contraction adaptability relative to the conductive metal column, thereby avoiding the problem of the wire core not being able to conduct electricity when the end of the conductive metal column is not in contact; and compensating for the problem of dimensional deviation in actual installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the waterproof cable assembly structure based on modular design of the present invention.

[0026] Figure 2 It is a cross-sectional view of a waterproof cable assembly based on modular design of the present invention.

[0027] Figure 3 It is a cross-sectional view from one perspective of the waterproof cable assembly based on modular design of the present invention when used in conjunction with a cable sheath.

[0028] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure in the middle.

[0029] Figure 5 It is a cross-sectional view from another perspective when the waterproof cable assembly based on modular design of the present invention is used in conjunction with the cable sheath.

[0030] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B in the middle.

[0031] In the figure: 1. waterproof connector; 2. cable sheath; 3. screw; 4. conductive metal column; 5. first chamber; 6. second chamber; 7. pressure plate; 8. pressure sheet; 9. spring; 10. air hole; 11. spring groove; 12. first rubber sealing ring; 13. first elastic metal ring; 14. second rubber sealing ring; 15. second elastic metal ring; 16. third rubber sealing ring; 17. wire core; 18. conductive metal ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The present invention provides Figure 1-Figure 6 A waterproof cable assembly based on modular design is shown, including a waterproof connector 1, which has a cylindrical shell structure. A conductive metal column 4 is provided in the middle of the waterproof connector 1 for connecting the cable sheaths 2 at both ends of the waterproof connector 1. Both ends of the waterproof connector 1 are provided with circular grooves for the corresponding cable sheaths 2 to extend into. Two sections of cable sheaths 2 are connected using the waterproof connector 1, which facilitates temporary wiring and interception operations of the cable sheaths 2.

[0034] In order to solve the problem that the cable waterproofing is generally fixed with sealant, which makes it inconvenient to disassemble and replace it later, the present invention is provided with a technology that uses pressurization and corrugated surface contact to enhance the seal.

[0035] A sealing structure is arranged in the circular grooves at both ends of the waterproof connector 1, and the sealing structure includes a first rubber sealing ring 12, a first elastic metal ring 13, a second rubber sealing ring 14, a second elastic metal ring 15 and a third rubber sealing ring 16 which are fixed in sequence on the inner wall of the circular groove. A wire core 17 is arranged in the middle of the cable sheath 2, and a part of the outer surface of the cable sheath 2 extending into the circular groove is removed. The first rubber sealing ring 12 is movably fitted at the outer ring of the cable sheath 2, the second rubber sealing ring 14 is sealed at the edge of the cable sheath 2, the second elastic metal ring 15 is sealed and pressed at the outer ring of the wire core 17, and the third rubber sealing ring 16 is sealed at the outer ring of the wire core 17 near the conductive metal column 4; a first chamber 5 and a second chamber 6 are arranged inside the waterproof connector 1, the first chamber 5 is annular in structure and arranged around the circular groove, the second chamber 6 is a rectangular trough structure, and a plurality of second chambers 6 are arranged, and the plurality of second chambers 6 are arranged along the outer surface of the first chamber 5. The first chamber 5 is movably provided with a pressing piece 8, the second chamber 6 is movably provided with a pressing plate 7, the first chamber 5 and the second chamber 6 are connected through an air hole 10, a spring 9 is fixedly provided on a side of the pressing plate 7 close to the pressing piece 8, and the end of the spring 9 away from the pressing plate 7 is fixedly connected to the pressing piece 8; the outer surface of the waterproof connector 1 is connected with a screw rod 3 through threaded cooperation, and the end of the screw rod 3 is rotatably connected to the side of the pressing plate 7 away from the pressing piece 8; when connecting two sections of cable sheath 2, the ends of the two sections of cable sheath 2 are peeled respectively, and the length of the peeled section is equal to the total length of the third rubber sealing ring 16, the second elastic metal ring 15 and the second rubber sealing ring 14; when the cable sheath 2 is extended into the circular groove, the end of the cable sheath 2 abuts against the side of the second rubber sealing ring 14 away from the second elastic metal ring 15, and the end of the wire core 17 abuts against the end of the conductive metal column 4, and the two sections of the wire core 17 are connected through the conductive metal column 4 to achieve conductive connection.

[0036] After the cable sheath 2 is inserted into the circular groove and installed in place, the screw rod 3 is turned. Since the screw rod 3 is connected to the waterproof connector 1 by threaded fitting, the end of the screw rod 3 will contact the pressure plate 7 to move in the second chamber 6 when it rotates. When the pressure plate 7 moves toward the position close to the first chamber 5, the gas in the second chamber 6 is pressed into the first chamber 5 from the air hole 10, and the first chamber 5 is pressurized, so that the pressing sheet 8 can be pressed to better wrap the outer periphery of the core 17. Since the pressing sheet 8 is elastically deformable and is wrapped around the outer periphery of the core 17 by gas pressurization, the pressing sheet 8 will be evenly pressed on the outer periphery of the core 17, so that the corresponding core Any position of the third rubber sealing ring 16, the second elastic metal ring 15, the second rubber sealing ring 14, the first elastic metal ring 13 and the first rubber sealing ring 12 on the outer periphery of 17 can maintain the same pressure, which helps the third rubber sealing ring 16, the second elastic metal ring 15, the second rubber sealing ring 14, the first elastic metal ring 13 and the first rubber sealing ring 12 to better seal at the connection between the cable sheath 2 and the waterproof connector 1, with multiple seals and good sealing effect, and replaces the method of using sealing rings or ordinary screws in the prior art to press and fix with uneven force resulting in different sealing degrees, thereby solving the problem of water leakage at some positions.

[0037] Furthermore, when the pressure plate 7 moves toward the first chamber 5, it will also compress the spring 9, so that the spring 9 further presses the pressure piece 8, so that the pressure piece 8 can better fit on the inner annular wall of the first chamber 5 to maintain a good seal. The position of the pressure piece 8 is not offset. The pressing of the spring 9 combined with the push of the air pressure enables the pressure piece 8 to maintain its position without offset and have a good sealing effect.

[0038] Among them, the pressing plate 7 is a rectangular plate structure, and the outer periphery of the pressing plate 7 is movably fitted with the inner wall of the outer periphery of the second chamber 6 and remains sealed; the pressing sheet 8 is an annular sheet structure, and the pressing sheet 8 is movably fitted on the inner ring wall of the first chamber 5 close to the wire core 17, and the pressing sheet 8 is elastic; the third rubber sealing ring 16, the second rubber sealing ring 14 and the first rubber sealing ring 12 are all annular structures, and the inner ring walls of the third rubber sealing ring 16, the second rubber sealing ring 14 and the first rubber sealing ring 12 remain smooth; the second elastic metal ring 15 and the first elastic metal ring 13 are both annular structures, and the inner ring walls of the second elastic metal ring 15 and the first elastic metal ring 13 are corrugated.

[0039] Furthermore, the air pressure combined with the pressure of the spring 9 enables the first elastic metal ring 13 and the second elastic metal ring 15 to be pressed onto the corresponding outer surfaces of the cable sheath 2, the wire core 17 or the conductive metal ring 18 to form a corrugated structure, which increases the sealing performance.

[0040] When the cable sheath 2 is removed, the screw rod 3 can be screwed in the reverse direction. At this time, the spring 9 is reset and the pressing sheet 8 can be stretched, so that the first rubber sealing ring 12, the first elastic metal ring 13, the second rubber sealing ring 14, the second elastic metal ring 15 and the third rubber sealing ring 16 are smoothly separated from the corresponding cable sheath 2 or the surface of the wire core 17 without mutual adhesion, which is convenient for disassembly and reuse, replacing the method of fixing with glue in the prior art.

[0041] In the present invention, the first rubber sealing ring 12, the first elastic metal ring 13, the second rubber sealing ring 14, the second elastic metal ring 15 and the third rubber sealing ring 16 are distributed in sequence from a position far away from the conductive metal column 4 to a position close to the conductive metal column 4; a spring groove 11 for the spring 9 to move through is provided on the structure between the first chamber 5 and the second chamber 6, so that the spring 9 can smoothly press the positioning pressing sheet 8 and stretch the pressing sheet 8, and the practicability is strong.

[0042] A conductive metal ring 18 is fixedly provided at one end of the conductive metal column 4 close to the cable sheath 2. The conductive metal ring 18 is a ring-shaped metal mesh structure. The conductive metal ring 18 is sleeved on the outer ring of the wire core 17. The setting of the conductive metal ring 18 enables the wire core 17 to have a certain degree of expansion and contraction adaptability relative to the conductive metal column 4, thereby avoiding the problem of the wire core 17 not being able to conduct electricity when the end of the conductive metal column 4 is not in contact; and compensating for the problem of dimensional deviation in actual installation; and the conductive metal ring 18 is elastic, and when the inner ring wall of the second elastic metal ring 15 is pressed onto the outer surface of the conductive metal ring 18, a corrugated structure is formed on the outer ring of the conductive metal ring 18, further increasing the sealing and waterproof properties.

[0043] Among them, the waterproof connector 1 and the screw 3 are both insulating structures, and plastic structures, etc. can be used. The conductive metal column 4 is a conductive structure, and copper metal, etc. can be used, which will not be elaborated here.

Claims

1. A waterproof cable assembly based on modular design, comprising a waterproof connector (1), characterized in that: The waterproof connector (1) is in the form of a cylindrical shell structure, a conductive metal column (4) for connecting the cable sheaths (2) at both ends of the waterproof connector (1) is provided in the middle of the waterproof connector (1), and circular grooves for the corresponding cable sheaths (2) to extend into are provided at both ends of the waterproof connector (1); A sealing structure is provided in the circular groove, the sealing structure comprising a first rubber sealing ring (12), a first elastic metal ring (13), a second rubber sealing ring (14), a second elastic metal ring (15) and a third rubber sealing ring (16) which are fixed to the inner wall of the circular groove in sequence; a wire core (17) is provided in the middle of the cable sheath (2); a portion of the outer surface of the cable sheath (2) extending into the circular groove is removed; the first rubber sealing ring (12) is movably fitted on the outer ring of the cable sheath (2); the second rubber sealing ring (14) is sealed at the edge of the cable sheath (2); the second elastic metal ring (15) is sealed and pressed on the outer ring of the wire core (17); and the third rubber sealing ring (16) is sealed on the outer ring of the wire core (17) near the conductive metal column (4); The waterproof connector (1) is provided with a first chamber (5) and a second chamber (6) inside. The first chamber (5) is an annular structure and is arranged around a circular groove. The second chamber (6) is a rectangular groove structure. A plurality of second chambers (6) are provided. The plurality of second chambers (6) are distributed at equal angles along the outer circumference of the first chamber (5). A pressing piece (8) is movably provided in the first chamber (5). A pressing plate (7) is movably provided in the second chamber (6). The first chamber (5) and the second chamber (6) are connected via an air hole (10). A spring (9) is fixedly provided on a side of the pressing plate (7) close to the pressing piece (8). The end of the spring (9) away from the pressing plate (7) is fixedly connected to the pressing piece (8). The outer surface of the waterproof connector (1) is connected to a screw rod (3) through threaded engagement, and the end of the screw rod (3) is rotatably connected to a side of the pressing plate (7) away from the pressing sheet (8).

2. A waterproof cable assembly based on modular design according to claim 1, characterized in that: The first rubber sealing ring (12), the first elastic metal ring (13), the second rubber sealing ring (14), the second elastic metal ring (15) and the third rubber sealing ring (16) are distributed in sequence from a position away from the conductive metal column (4) to a position close to the conductive metal column (4).

3. The waterproof cable assembly based on modular design according to claim 1, characterized in that: A spring slot (11) through which the spring (9) can movably pass is provided on the structure between the first chamber (5) and the second chamber (6).

4. The waterproof cable assembly based on modular design according to claim 1, characterized in that: The pressing plate (7) is in a rectangular plate-shaped structure, and the outer periphery of the pressing plate (7) and the inner wall of the outer periphery of the second chamber (6) are movably fitted and sealed.

5. The waterproof cable assembly based on modular design according to claim 1, characterized in that: The pressing sheet (8) is an annular sheet structure, and the pressing sheet (8) is movably fitted on the inner annular wall of the first chamber (5) close to the wire core (17), and the pressing sheet (8) is elastic.

6. The waterproof cable assembly based on modular design according to claim 1, characterized in that: The third rubber sealing ring (16), the second rubber sealing ring (14) and the first rubber sealing ring (12) are all annular structures, and the inner ring walls of the third rubber sealing ring (16), the second rubber sealing ring (14) and the first rubber sealing ring (12) remain smooth.

7. The waterproof cable assembly based on modular design according to claim 1, characterized in that: The second elastic metal ring (15) and the first elastic metal ring (13) are both annular structures, and the inner ring walls of the second elastic metal ring (15) and the first elastic metal ring (13) are corrugated.

8. The waterproof cable assembly based on modular design according to claim 1, characterized in that: A conductive metal ring (18) is fixedly provided at one end of the conductive metal column (4) close to the cable sheath (2); the conductive metal ring (18) is in the form of an annular metal mesh structure, and the conductive metal ring (18) is sleeved on the outer ring of the wire core (17).

9. A waterproof cable assembly based on modular design according to claim 8, characterized in that: The conductive metal ring (18) is elastic, and when the inner ring wall of the second elastic metal ring (15) is pressed onto the outer surface of the conductive metal ring (18), a corrugated structure is formed on the outer ring of the conductive metal ring (18).

10. The waterproof cable assembly based on modular design according to claim 1, characterized in that: The waterproof connector (1) and the screw rod (3) are both insulating structures, and the conductive metal column (4) is a conductive structure.

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