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CN-115566493-B - Waterproof cable joint

CN115566493BCN 115566493 BCN115566493 BCN 115566493BCN-115566493-B

Abstract

The invention belongs to the technical field of communication equipment and discloses a waterproof cable connector, which comprises an upper connector and a lower connector, wherein a first watertight cable is arranged in the upper connector, a second watertight cable is arranged in the lower connector, a section of core wires of the first watertight cable and the second watertight cable protrude out of shielding layers of the first watertight cable and the second watertight cable, the shielding layers of the first watertight cable and the second watertight cable are grounded, the inner shape of the lower end of the upper connector can be matched with the outer shape of the upper end of the lower connector in a sealing manner and is used for conducting the upper core wires and the lower core wires and isolating the core wires from the shielding layers, an installation groove is formed in the lower connector, a through hole communicated with the installation groove is formed in the side surface of the lower connector, a watertight mechanism is arranged in the installation groove, the upper connector is contacted with the lower connector in a contact manner during operation, a closed cavity is formed between the upper connector and the lower connector, the cavity is filled with water, the water pressure inside the cavity is increased along with the approach of the two connectors, and the water pressure inside the cavity is pushed to move downwards in the installation groove, the through hole outwards to reduce the water pressure inside the cavity, so that the upper connector and the lower connector are constantly close and in butt joint.

Inventors

  • WANG ZHAO
  • HE LU
  • WU GANG
  • PAN LIBING
  • ZAI QINQIN
  • WANG DONGLIANG
  • CHEN KEN
  • YU JUN
  • LIU YUAN
  • LIU ZHUOYAO
  • WANG CHAOLUN
  • LIU CHAO
  • WANG KAIQI
  • HUANG LONG
  • WU JIANFENG

Assignees

  • 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所）

Dates

Publication Date
20260508
Application Date
20221025

Claims (14)

  1. 1. The waterproof cable connector is characterized by comprising an upper connector and a lower connector, wherein a first watertight cable (3) is arranged in the upper connector, a second watertight cable (21) is arranged in the lower connector, core wires of the first watertight cable (3) and the second watertight cable (21) protrude out of shielding layers of the first watertight cable and the second watertight cable, the shielding layers of the first watertight cable and the second watertight cable are grounded, the inner shape of the lower end of the upper connector can be in sealing fit with the outer shape of the upper end of the lower connector, the upper core wires and the lower core wires are conducted, the core wires are isolated from the shielding layers, a mounting groove is formed in the lower connector, a watertight mechanism is arranged in the mounting groove, and a through hole (25) communicated with the mounting groove is formed in the side surface of the mounting groove; when the connector is in operation, the lower connector is in contact with the upper connector, a closed cavity is formed between the lower connector and the upper connector, water is filled in the cavity, along with the approach of the two connectors, the water pressure in the cavity is increased, the watertight mechanism is pushed to move downwards in the mounting groove, the through hole (25) is decompressed to reduce the water pressure in the cavity, and the upper connector is further enabled to be continuously close to the lower connector and in butt joint; The watertight mechanism comprises a sliding block (17) and an elastic piece (18), one end of the elastic piece (18) is contacted with the bottom surface of the mounting groove, the other end of the elastic piece is abutted with the bottom surface of the sliding block (17), the sliding block (17) is in sealing fit with the side wall of the mounting groove, and the elastic piece (18) is limited in the mounting groove; The upper connector comprises an upper connector insulating cylinder (8), a first pressing cap (1) and an upper metal sleeve (2), wherein the upper end face of the upper connector insulating cylinder (8) is in contact fit with the lower end face of the first pressing cap (1), the upper metal sleeve (2) is sleeved outside the assembled upper connector insulating cylinder (8) and the first pressing cap (1), and a second watertight cable (21) is penetrated into the upper connector insulating cylinder (8) from the side face of the upper metal sleeve (2).
  2. 2. The waterproof cable joint according to claim 1, wherein the upper end of the lower joint is of a step structure, the installation groove is formed in the end face of the step, a stop piece (15) is further arranged on the end face of the step, and the stop piece (15) is used for limiting the watertight mechanism in the installation groove.
  3. 3. A watertight cable joint according to claim 1 or 2 wherein a first sealing member (9) is further provided on the inner wall of the upper joint insulating cylinder (8) for forming a closed cavity when the lower joint is in contact with the upper joint.
  4. 4. A watertight cable joint according to claim 1 wherein the upper joint insulation (8) is in assembled connection with the upper metal sleeve (2).
  5. 5. A watertight cable joint according to claim 4 wherein the upper joint insulation (8) is secured to the upper metal sleeve (2) by a threaded connection.
  6. 6. The waterproof cable joint according to claim 1, wherein an upper joint core rod (10) is arranged in the upper joint insulating cylinder (8), a core wire of the first watertight cable (3) is penetrated into the upper joint core rod (10), a shielding layer of the first watertight cable (3) is limited outside the joint core rod (10), after the upper joint and the lower joint are assembled, the core wire of the second watertight cable (21) is inserted into the upper joint core rod (10), and a shielding layer of the second watertight cable (21) is limited outside the joint core rod (10).
  7. 7. A watertight cable joint according to claim 6 wherein a third seal (7) is provided between the shielding layer of the first watertight cable (3) and the contact surface of the upper joint insulation (8).
  8. 8. A watertight cable joint according to claim 6, wherein an insulating cap (11) is arranged between the joint core (10) and the first press cap (1).
  9. 9. A watertight cable joint according to claim 8 wherein a second seal (12) is provided between the contact surface of the insulating cap (11) and the upper joint insulating cylinder (8).
  10. 10. A waterproof cable joint according to claim 6, characterized in that the side of the upper metal sleeve (2) is provided with a mounting cylinder, the bottom surface of which is provided with a through hole, and the first watertight cable (3) is arranged in the upper joint core rod (10) through the through hole.
  11. 11. A waterproof cable joint according to claim 10, characterized in that a first compression ring (5) and a rubber stuffing box (6) are arranged between the first watertight cable (3) and the inner wall of the installation cylinder, a second compression cap (4) is arranged on the end face of the installation cylinder, and the second compression cap (4) and the installation cylinder are assembled into a whole to compress the first compression ring (5) and the rubber stuffing box (6) in the installation cylinder to realize watertight.
  12. 12. A waterproof cable joint according to claim 1, wherein a lower joint core rod (13) is further arranged in the lower joint, the core wire of the second watertight cable (21) is arranged in the lower joint core rod (13) in a penetrating way, a shielding layer of the core wire is isolated outside the lower joint core rod (13), and the lower joint core rod (13) can be in contact conduction with the first watertight cable (3).
  13. 13. The waterproof cable joint of claim 12, wherein the lower joint comprises a lower joint insulation backbone (26), a lower metal sleeve (19) and a third press cap (22), wherein: The lower joint insulation framework (26) is arranged in the upper end of the lower metal sleeve (19), the mounting groove is formed in the lower joint insulation framework (26), the lower joint core rod (13) is vertically arranged at the center of the lower joint insulation framework (26), and the second watertight cable (21) is arranged at the center in a penetrating manner; A second compression ring (23) is arranged in the lower metal sleeve (19), the second compression ring (23) is sleeved outside the second watertight cable (21) and is used for compressing a shielding layer of the second watertight cable (21), and the upper end surface of the second compression ring is abutted to the bottom surface of the lower joint insulation framework (26); The third pressing cap (22) is sleeved outside the second watertight cable (21) and is assembled with the lower end of the lower metal sleeve (19) into a whole, the third pressing cap is used for limiting the second pressing ring (23) in the lower metal sleeve (19), and the through hole (25) is formed in the side wall of the lower joint insulating framework (26) overlapped with the lower metal sleeve (19).
  14. 14. A watertight cable joint according to claim 13 wherein a boss is further provided inside the lower metal sleeve (19), the bottom surface of the lower joint insulating skeleton (26) abutting against the boss.

Description

Waterproof cable joint Technical Field The invention belongs to the technical field of communication equipment, and particularly relates to a waterproof cable joint. Background The cable connector is mainly suitable for internal connection of various photoelectric transmission devices, such as communication devices for transmitting data, audio and the like. At present, a plurality of cable connectors, connectors and the like are used, so that the requirements on the use environment are high, and a common connector cannot be used in a high-humidity environment or even if the connector can be used in the high-humidity environment, but the connector also has no function of repeated plugging and unplugging. The number of waterproof cable joints which can be repeatedly disconnected and butted in a high-humidity environment or even in water is small, and the waterproof performance is not considered in the design of the cable joints which are mainly used at present, so that the situation of excessively low insulation resistance often occurs in the use process, further the transceiving is influenced, and the communication fault frequently occurs. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a waterproof cable connector, which aims to solve the problems that the existing cable connector is not easy to frequently plug and communication faults frequently occur due to poor waterproof performance. The invention provides a waterproof cable joint, which comprises an upper joint and a lower joint, wherein a first watertight cable is arranged in the upper joint, a second watertight cable is arranged in the lower joint, core wires of the first watertight cable and the second watertight cable protrude out of shielding layers of the first watertight cable and the second watertight cable, and the shielding layers of the first watertight cable and the second watertight cable are grounded; During operation, the upper joint contacts with the lower joint, forms a inclosed cavity between the two, the cavity is inside to be full of water, along with the approach of two joints, the inside water pressure of cavity increases, and promotes watertight mechanism is in the downward movement in the mounting groove, the outside pressure release of through-hole is in order to reduce the inside water pressure of cavity, and then makes the upper joint with the lower joint is constantly close to and dock. Further, the watertight mechanism comprises a sliding block and an elastic piece, one end of the elastic piece is in contact with the bottom surface of the mounting groove, the other end of the elastic piece is in butt joint with the bottom surface of the sliding block, the sliding block is in sealing fit with the side wall of the mounting groove, and the elastic piece is limited in the mounting groove. Further, the lower joint end is provided with a step structure, the mounting groove is formed in the end face of the step structure, the end face of the step structure is further provided with a stop piece, and the stop piece is used for limiting the watertight mechanism in the mounting groove. The upper connector comprises an upper connector insulating cylinder, a first pressing cap and an upper metal sleeve, wherein the upper end face of the upper connector insulating cylinder is in contact fit with the lower end face of the first pressing cap, the upper metal sleeve is sleeved outside the assembled upper connector insulating cylinder and the first pressing cap, the second watertight cable is inserted into the upper connector insulating cylinder from the side face of the upper metal sleeve, and preferably, a first sealing piece is further arranged on the inner wall of the upper connector insulating cylinder and used for forming a closed cavity when the lower connector is in contact with the upper connector. Further, the upper joint insulating cylinder and the upper metal sleeve are assembled into a whole, and preferably, the upper joint insulating cylinder and the upper metal sleeve are fixedly connected by screw threads. Further, an upper joint core rod is arranged in the upper joint insulating cylinder, a core wire of the first watertight cable is penetrated into the upper joint core rod, a shielding layer of the first watertight cable is limited outside the upper joint core rod, after the upper joint is assembled with the lower joint, a core wire of the second watertight cable is inserted into the upper joint core rod, a shielding layer of the second watertight cable is limited outside the upper joint core rod, and preferably, a third sealing piece is arranged between a contact surface of the shielding layer of the first watertight cable and the upper joint insulating cylinder. Further, an insulating cap is arranged between the joint core rod and the first pressing cap, and preferably, a second sealing piece is arranged between the insulating cap and the contact surface of the upper joint insulating