A towing optical cable docking device and use method thereof

Abstract

The present invention discloses a towing optical cable docking device and a method for using the same, and the present invention relates to the technical field of optical cable docking. The towing optical cable docking device and the method for using the same perform electromagnetic shielding protection on the connection of the optical cable through a shielding sleeve, and utilize an adapter to realize convenient connection of two shielding sleeves, and through the arrangement of a first fixing member and a second fixing member, during the process of connecting and fixing the two shielding sleeves by the adapter, double positioning and fixing of the optical cable are realized to ensure the stability of the male and female plug-in connection, and in conjunction with the arrangement of an outer closure member, a triple positioning and fixing effect of the optical cable is realized to ensure the stability of the optical cable connection, while realizing effective sealing protection of the male and female plug-in connection, and forming an outer double-layer protection to improve wear resistance, providing reliable guarantee for the long-term stable use of the towing optical cable.

Description

Technical Field

[0001] The present invention relates to the technical field of optical cable docking, and in particular to a towing optical cable docking device and a use method thereof. Background Art

[0002] Towed optical cable is an optical cable made of special materials and structural design. It is mainly used in situations where it needs to be frequently moved, towed or used in harsh environments such as underwater.

[0003] For the towing optical cable, in order to facilitate the docking, it is connected by using male and female plugs. This connection method is prone to falling off during the towing process. For example, a towing optical cable docking device described in Application No. 201710472548.X ensures the basic photoelectric transmission effect by locating the connecting part of the optical fiber or cable inside the towing optical cable in the connecting channel inside the towing optical cable docking device, and there is an isolation effect between the connecting channels. The shielding layer, the inner surface of the connecting channel, and the contact surfaces of the first docking piece and the second docking piece are coated with electromagnetic shielding material to ensure the electromagnetic shielding effect of the connection. The two ends of the towing optical cable docking device are fixed by optical cables to ensure the strength requirements of the connection. The glue filling inside the shell further enhances the strength of the connection, and at the same time has a good protective effect on the interior such as waterproofing and moisture-proofing.

[0004] Based on the search of the above information, it can be seen that the existing towing optical cable docking device has the problem of cumbersome operation, and its sealing method by glue injection makes it impossible to disassemble and assemble conveniently, and is inconvenient to use. For this reason, a towing optical cable docking device and a method of using the same are proposed, which can ensure convenient and stable docking and good sealing effect without glue injection. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a trailing optical cable docking device and a method of using the same, which solves the problem that the prior trailing optical cable docking device is complicated to operate and cannot be conveniently assembled and disassembled.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a towing optical cable docking device, comprising a first optical cable, a female head fixed to one end of the first optical cable, a second optical cable, and a male head fixed to one end of the second optical cable, the female head and the male head are used in conjunction with each other, the outer circumferences of the first optical cable and the second optical cable are both sleeved with a shielding sleeve, the interior of the shielding sleeve is provided with a first fixing member and a second fixing member, the two shielding sleeves are docked through an adapter, the outer circumferences of the first optical cable and the second optical cable are sleeved with an outer closure member, and the outer closure member is threadedly matched with the adapter.

[0009] The present invention is further configured as follows: the first fixing member includes a first conical washer and a stepped ring, a first sloped circular ring is welded and fixed on one side of the stepped ring, the first sloped circular ring, the first conical washer and the stepped ring are coaxially arranged, and the inner slope of the first sloped circular ring is slidably matched with the outer slope of the first conical washer.

[0010] The present invention is further configured as follows: the stepped ring is slidably installed inside the shielding sleeve, the first sloped ring, the first truncated cone washer and the stepped ring in the two first fixing members are respectively sleeved on the outer circumferences of the first optical cable and the second optical cable, and the side of the first sloped ring away from the stepped ring contacts one side of the inner cavity of the shielding sleeve.

[0011] The present invention is further configured as follows: the second fixing member includes an elastic inner curved ring, both sides of the elastic inner curved ring are fixedly connected with extrusion rings, the inner arc surface of the elastic inner curved ring is fixedly connected with an elastic sleeve, the inner arc surface of one of the extrusion rings is also fixedly connected with a positioning ring, and the surface of the positioning ring is evenly spaced with a plurality of through grooves.

[0012] The present invention is further configured as follows: the two extrusion rings are both slidably mounted inside the shielding sleeve, and the two extrusion rings and the elastic sleeves in the two second fixing members are respectively sleeved on the outer circumferences of the first optical cable and the second optical cable;

[0013] The side of the other extrusion ring away from the elastic inner bending ring contacts the step surface of the step ring.

[0014] The present invention is further configured as follows: the adapter comprises an external threaded barrel and an internal threaded barrel, the external threaded barrel and the internal threaded barrel are coaxially arranged, and the outer surface of the external threaded barrel and the inner surface of the internal threaded barrel are fixed by a reinforcement ring;

[0015] The two sides of the outer surface of the external threaded barrel are respectively threadedly matched with the inner surfaces of the two shielding sleeves, and the threads on the two sides of the outer circumference of the external threaded barrel are arranged oppositely, and the two sides of the external threaded barrel are respectively in contact with the opposite sides of the two second fixing members;

[0016] The internal threaded cylinder is sleeved on the outer circumferences of the two shielding sleeves.

[0017] The present invention is further configured as follows: the outer opening closure comprises a sleeve, a closed collar and a second conical washer; the sleeve is welded and fixed on one side of the closed collar; an externally threaded bushing is welded and fixed on the other side of the closed collar; the second conical washer, the closed collar, the externally threaded bushing and the sleeve are coaxially arranged; a second sloped circular ring is fixedly connected to one side of the inner cavity of the sleeve; an inner slope of the second sloped circular ring is slidably matched with an outer slope of the second conical washer.

[0018] The present invention is further configured as follows: the sleeve shell, the closed ring and the externally threaded bushing are all sleeved and slidably installed on the outer periphery of the shielding sleeve, and the outer periphery of the externally threaded bushing is threadedly connected to the inner surface of the internally threaded tube, and a sealing gasket adapted to the internally threaded tube is also embedded on the other side of the closed ring.

[0019] The present invention is further configured as follows: the sleeve and the second truncated cone washer in the two outer closure members are respectively sleeved on the outer circumferences of the first optical cable and the second optical cable, and the side of the second truncated cone washer away from the second truncated cone washer contacts with one side of the shielding sleeve.

[0020] The present invention also discloses a method for using the towing optical cable docking device, which specifically comprises the following steps:

[0021] S1. sequentially sleeve a set of casing, a second truncated cone washer, a shielding sleeve, a first truncated cone washer, a step ring and an elastic inner curved ring on a first optical cable, and then sequentially sleeve another set of casing, a second truncated cone washer, a shielding sleeve, a first truncated cone washer, a step ring and an elastic inner curved ring on a second optical cable;

[0022] S2. Insert the male connector into the female connector. After the first optical cable and the second optical cable are connected, two shielding sleeves are respectively placed on both sides of the external threaded barrel and tightened until the shielding sleeves are in contact with the surface of the reinforcement ring.

[0023] S3, during the tightening process of the shielding sleeve in S2, the external threaded tube squeezes an extrusion ring, and the extrusion ring squeezes the elastic inner curved ring, so that the two elastic sleeves squeeze and position the first optical cable and the second optical cable respectively. During the process, the elastic inner curved ring squeezes another extrusion ring, and the extrusion ring pushes the step ring to move, and the step ring drives the first sloped circular ring to squeeze the first truncated cone washer, so that the two first truncated cone washers squeeze and position the first optical cable and the second optical cable respectively, forming double positioning;

[0024] S4. Rotate the casing, and the casing drives the closed ring to rotate the external threaded bushing, which is screwed into the internal threaded barrel until both sides of the internal threaded barrel are squeezed and embedded in the sealing gasket. During the process, the casing drives the second sloped circular ring to squeeze the second truncated cone gasket, so that the two second truncated cone gaskets squeeze and position the first optical cable and the second optical cable respectively, forming a triple positioning.

[0025] (III) Beneficial effects

[0026] The present invention provides a towing optical cable docking device and a method for using the same. The device has the following beneficial effects:

[0027] (1) The present invention provides electromagnetic shielding protection for the optical cable connection through a shielding sleeve, and uses an adapter to achieve convenient connection of two shielding sleeves. In addition, the first fixing member and the second fixing member are arranged to achieve dual positioning and fixing of the optical cable during the process of connecting and fixing the two shielding sleeves by the adapter, thereby ensuring the stability of the male and female plug-in connection. In combination with the arrangement of the outer closure member, a triple positioning and fixing effect of the optical cable is achieved, thereby ensuring the stability of the optical cable connection and achieving effective sealing protection for the male and female plug-in connection. In addition, a double-layer outer protection is formed to improve wear resistance, thereby providing reliable protection for the long-term stable use of the towing optical cable.

[0028] (2) The present invention uses an external threaded tube, an internal threaded tube and a reinforcement ring to conveniently connect and fix two shielding sleeves. At this time, an installation gap is left between the external threaded tube and the shielding sleeve. The external threaded bushing is screwed into the installation gap, and the sealing gasket and the closing ring are used to make the installation gap have a good sealing effect. While achieving double-layer outer protection, the shell, the second sloped ring and the second truncated cone gasket are used to achieve sealing protection of the connection between the outer side of the shielding sleeve and the optical cable, ensuring the stability of the optical cable while further improving its sealing protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0031] Figure 3 is a schematic structural diagram of a second fixing member of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the adapter of the present invention;

[0033] Figure 5 It is a schematic structural diagram of the outer opening closure of the present invention;

[0034] Figure 6 It is a structural schematic diagram of the first truncated cone gasket of the present invention;

[0035] Figure 7 It is a structural schematic diagram of the second truncated cone gasket of the present invention;

[0036] In the figure, 1, the first optical cable; 2, the female connector; 3, the second optical cable; 4, the male connector; 5, the shielding sleeve; 6, the first fixing member; 7, the second fixing member; 8, the adapter; 9, the outer closing member; 10, the first truncated cone washer; 11, the stepped collar; 12, the first sloped circular ring; 13, the elastic inner curved collar; 14, the extrusion ring; 15, the elastic sleeve; 16, the positioning ring; 17, the through groove; 18, the externally threaded barrel; 19, the internally threaded barrel; 20, the reinforcement ring; 21, the casing; 22, the closing collar; 23, the second truncated cone washer; 24, the externally threaded bushing; 25, the second sloped circular ring; 26, the sealing washer. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0038] See also Figure 1-7 , the embodiment of the present invention provides the following two technical solutions:

[0039] Embodiment 1

[0040] A towing optical cable docking device comprises a first optical cable 1, a female connector 2 fixed to one end of the first optical cable 1, a second optical cable 3, and a male connector 4 fixed to one end of the second optical cable 3. The female connector 2 and the male connector 4 are used in conjunction with each other.

[0041] As a preferred solution, in order to achieve convenient shielding protection for the connection between the male connector 4 and the female connector 2, the outer circumferences of the first optical cable 1 and the second optical cable 3 are both provided with a shielding sleeve 5, and the two shielding sleeves 5 are connected via an adapter 8.

[0042] As a preferred solution, in order to ensure the stability of the male connector 4 and the female connector 2 in the shielding sleeve 5 after being connected, a first fixing member 6 and a second fixing member 7 are provided inside the shielding sleeve 5 .

[0043] As a preferred solution, in order to achieve sealing protection for the connection between the inner side of the shielding sleeve 5 and the optical cable, the first fixing member 6 includes a first conical washer 10 and a stepped ring 11. The stepped ring 11 is slidably installed inside the shielding sleeve 5. A first sloped circular ring 12 is welded and fixed on one side of the stepped ring 11. The first sloped circular ring 12, the first conical washer 10 and the stepped ring 11 are coaxially arranged, and the inner slope of the first sloped circular ring 12 is slidably matched with the outer slope of the first conical washer 10. The first sloped circular ring 12, the first conical washer 10 and the stepped ring 11 in the two first fixing members 6 are respectively sleeved on the outer circumference of the first optical cable 1 and the second optical cable 3, and the side of the first sloped circular ring 12 away from the stepped ring 11 is in contact with one side of the inner cavity of the shielding sleeve 5. In this way, by squeezing the stepped ring 11, the first sloped circular ring 12 can squeeze the first conical washer 10 to achieve positioning and sealing protection of the optical cable.

[0044] As a preferred solution, in order to achieve stable extrusion of the step ring 11 and double positioning of the optical cable, the second fixing member 7 includes an elastic inner-bend ring 13, both sides of the elastic inner-bend ring 13 are fixedly connected with extrusion rings 14, the inner arc surface of the elastic inner-bend ring 13 is fixedly connected with an elastic sleeve 15, and the inner arc surface of an extrusion ring 14 is also fixedly connected with a positioning ring 16, and a plurality of through grooves 17 are evenly spaced on the surface of the positioning ring 16, wherein a plurality of through grooves 17 are provided on the positioning ring 16, which can provide installation conditions for the passage of the male head 4 or the female head 2 to ensure the stability of the connection between the male head 4 and the female head 2, and the extrusion rings 14 are slidably installed inside the shielding sleeve 5, and the two extrusion rings 14 and the elastic sleeve 15 in the two second fixing members 7 are respectively sleeved on the outer periphery of the first optical cable 1 and the second optical cable 3, and the other extrusion ring 14 is in contact with the step surface of the step ring 11 on the side away from the elastic inner-bend ring 13.

[0045] As a preferred solution, in order to ensure convenient double extrusion positioning of the optical cable by the first fixing member 6 and the second fixing member 7, the adapter 8 includes an external threaded barrel 18 and an internal threaded barrel 19, the external threaded barrel 18 and the internal threaded barrel 19 are coaxially arranged, and the outer surface of the external threaded barrel 18 and the inner surface of the internal threaded barrel 19 are fixed by a reinforcement ring 20, the two sides of the outer surface of the external threaded barrel 18 are respectively matched with the inner surface threads of the two shielding sleeves 5, and the threads on both sides of the outer periphery of the external threaded barrel 18 are oppositely arranged, the two sides of the external threaded barrel 18 are respectively in contact with the opposite sides of the two second fixing members 7, and the internal threaded barrel 19 is sleeved on the outer periphery of the two shielding sleeves 5.

[0046] As an illustration, rubber washers are provided on both sides of the reinforcement ring 20 , and the rubber washers are provided between the external threaded barrel 18 and the internal threaded barrel 19 to ensure the stability of the connection between the shielding sleeve 5 and the external threaded barrel 18 .

[0047] In this embodiment, while electromagnetic shielding protection is provided for the optical cable connection, dual positioning of the optical cable can also be achieved, ensuring the sealing effect of the connection while achieving the effect of convenient docking of the optical cable. At the same time, the device is easy to disassemble and use.

[0048] Embodiment 2

[0049] As an improvement of the previous embodiment, the present embodiment is a towing optical cable docking device, further comprising an outer closure member 9 sleeved on the outer periphery of the first optical cable 1 and the second optical cable 3, and the outer closure member 9 is threadedly matched with the adapter 8. Specifically, the outer closure member 9 comprises a casing 21, a closed collar 22 and a second truncated cone washer 23. The casing 21 is welded and fixed to one side of the closed collar 22, and an externally threaded bushing 24 is welded and fixed to the other side of the closed collar 22. The second truncated cone washer 23, the closed collar 22, the externally threaded bushing 24 and the casing 21 are coaxially arranged, and one side of the inner cavity of the casing 21 is fixedly connected to a second sloped circular ring 25. The second sloped circular ring 25 The inner slope surface of the second truncated cone washer 23 is slidably matched with the outer slope surface of the second truncated cone washer 23. The shell 21, the closed ring 22 and the externally threaded bushing 24 are all sleeved and slidably installed on the outer periphery of the shielding sleeve 5, and the outer periphery of the externally threaded bushing 24 is threadedly connected with the inner surface of the internally threaded tube 19. In order to ensure the stability of the connection between the closed ring 22 and the internally threaded tube 19, a sealing washer 26 adapted to the internally threaded tube 19 is also embedded on the other side of the closed ring 22. The shell 21 and the second truncated cone washer 23 in the two external closure parts 9 are respectively sleeved on the outer peripheries of the first optical cable 1 and the second optical cable 3, and one side of the second truncated cone washer 23 is in contact with one side of the shielding sleeve 5.

[0050] The advantage of the second embodiment over the first embodiment is that it realizes the sealing protection of the connection between the outer side of the shielding sleeve 5 and the optical cable, realizes the triple positioning of the optical cable, and can also cooperate with the internal threaded tube 19 to realize the double-layer surrounding protection of the optical cable connection, which has the advantage of long-lasting and effective service life.

[0051] A method for using a towing optical cable docking device specifically comprises the following steps:

[0052] S1, sequentially sleeve a set of casing 21, second truncated cone washer 23, shielding sleeve 5, first truncated cone washer 10, step ring 11 and elastic inner curved ring 13 on the first optical cable 1, and then sequentially sleeve another set of casing 21, second truncated cone washer 23, shielding sleeve 5, first truncated cone washer 10, step ring 11 and elastic inner curved ring 13 on the second optical cable 3;

[0053] S2, insert the male connector 4 into the female connector 2, and after the first optical cable 1 and the second optical cable 3 are connected, the two shielding sleeves 5 are respectively put on both sides of the external threaded tube 18, and are respectively tightened until the shielding sleeves 5 are in contact with the surface of the reinforcement ring 20;

[0054] S3, during the tightening process of the shielding sleeve 5 in S2, the external threaded tube 18 squeezes an extrusion ring 14, and the extrusion ring 14 squeezes the elastic inner curved ring 13, so that the two elastic sleeves 15 squeeze and position the first optical cable 1 and the second optical cable 3 respectively. During the process, the elastic inner curved ring 13 squeezes another extrusion ring 14, and the extrusion ring 14 pushes the step ring 11 to move, and the step ring 11 drives the first sloped circular ring 12 to squeeze the first truncated cone washer 10, so that the two first truncated cone washers 10 squeeze and position the first optical cable 1 and the second optical cable 3 respectively, forming double positioning;

[0055] S4. Rotate the casing 21, the casing 21 drives the closed collar 22 to rotate the external threaded bushing 24, and the external threaded bushing 24 is screwed into the internal threaded tube 19 until the two sides of the internal threaded tube 19 are squeezed and embedded in the sealing gasket 26. During the process, the casing 21 drives the second sloped circular ring 25 to squeeze the second truncated cone gasket 23, so that the two second truncated cone gaskets 23 squeeze and position the first optical cable 1 and the second optical cable 3 respectively, forming a triple positioning.

Claims

1. A trailing optical cable docking device, comprising a first optical cable (1), a female connector (2) fixed to one end of the first optical cable (1), a second optical cable (3), and a male connector (4) fixed to one end of the second optical cable (3), wherein the female connector (2) and the male connector (4) are used in conjunction with each other, and characterized in that: The outer circumferences of the first optical cable (1) and the second optical cable (3) are both sleeved with a shielding sleeve (5), the interior of the shielding sleeve (5) is provided with a first fixing member (6) and a second fixing member (7), the two shielding sleeves (5) are butt-jointed via an adapter (8), the outer circumferences of the first optical cable (1) and the second optical cable (3) are sleeved with an outer end sealing member (9), and the outer end sealing member (9) is threadedly matched with the adapter (8); The first fixing member (6) comprises a first truncated cone washer (10) and a stepped collar (11); a first sloped circular ring (12) is welded and fixed to one side of the stepped collar (11); the first sloped circular ring (12), the first truncated cone washer (10) and the stepped collar (11) are coaxially arranged, and an inner slope of the first sloped circular ring (12) is slidably matched with an outer slope of the first truncated cone washer (10); The step ring (11) is slidably mounted inside the shielding sleeve (5); the first sloped circular ring (12), the first truncated cone washer (10) and the step ring (11) in the two first fixing members (6) are respectively sleeved on the outer circumferences of the first optical cable (1) and the second optical cable (3); and a side of the first sloped circular ring (12) away from the step ring (11) contacts a side of the inner cavity of the shielding sleeve (5); The second fixing member (7) comprises an elastic inner curved ring (13), both sides of the elastic inner curved ring (13) are fixedly connected to an extrusion ring (14), the inner arc surface of the elastic inner curved ring (13) is fixedly connected to an elastic sleeve (15), and the inner arc surface of one of the extrusion rings (14) is also fixedly connected to a positioning ring (16), and the surface of the positioning ring (16) is provided with a plurality of through grooves (17) at even intervals; The two extrusion rings (14) are both slidably mounted inside the shielding sleeve (5), and the two extrusion rings (14) and the elastic sleeve (15) in the two second fixing members (7) are respectively sleeved on the outer circumference of the first optical cable (1) and the second optical cable (3); The side of the other extrusion ring (14) away from the elastic inner curved ring (13) is in contact with the step surface of the step ring (11); The adapter (8) comprises an externally threaded barrel (18) and an internally threaded barrel (19), wherein the externally threaded barrel (18) and the internally threaded barrel (19) are coaxially arranged, and the outer surface of the externally threaded barrel (18) and the inner surface of the internally threaded barrel (19) are fixed via a reinforcement ring (20); The two sides of the outer surface of the external threaded barrel (18) are respectively threadably matched with the inner surfaces of the two shielding sleeves (5), and the threads on the two sides of the outer circumference of the external threaded barrel (18) are arranged oppositely, and the two sides of the external threaded barrel (18) are respectively in contact with the opposite sides of the two second fixing members (7); The internal threaded cylinder (19) is sleeved on the outer circumferences of the two shielding sleeves (5).

2. A towing optical cable docking device according to claim 1, characterized in that: The outer opening closing member (9) comprises a casing (21), a sealing ring (22) and a second truncated cone washer (23); the casing (21) is welded and fixed to one side of the sealing ring (22); an externally threaded bushing (24) is welded and fixed to the other side of the sealing ring (22); the second truncated cone washer (23), the sealing ring (22), the externally threaded bushing (24) and the casing (21) are coaxially arranged; a second sloped circular ring (25) is fixedly connected to one side of the inner cavity of the casing (21); an inner slope of the second sloped circular ring (25) is slidably matched with an outer slope of the second truncated cone washer (23).

3. A towing optical cable docking device according to claim 2, characterized in that: The sleeve (21), the closed collar (22) and the externally threaded bushing (24) are all sleeved and slidably mounted on the outer periphery of the shielding sleeve (5), and the outer periphery of the externally threaded bushing (24) is threadedly connected to the inner surface of the internally threaded tube (19), and a sealing gasket (26) adapted to the internally threaded tube (19) is also embedded on the other side of the closed collar (22).

4. A towing optical cable docking device according to claim 3, characterized in that: The sleeve (21) and the second truncated cone washer (23) in the two outer port closing members (9) are respectively sleeved on the outer circumferences of the first optical cable (1) and the second optical cable (3), and one side of the second truncated cone washer (23) is in contact with one side of the shielding sleeve (5).

5. A method for using a towing optical cable docking device, characterized in that: The specific steps include: S1. A set of casing (21), a second truncated cone washer (23), a shielding sleeve (5), a first truncated cone washer (10), a stepped collar (11) and an elastic inner curved collar (13) are sequentially mounted on a first optical cable (1), and then another set of casing (21), a second truncated cone washer (23), a shielding sleeve (5), a first truncated cone washer (10), a stepped collar (11) and an elastic inner curved collar (13) are sequentially mounted on a second optical cable (3); S2, inserting the male connector (4) into the female connector (2), completing the docking of the first optical cable (1) and the second optical cable (3), respectively sleeve the two shielding sleeves (5) on both sides of the external threaded tube (18), and tightening them respectively until the shielding sleeves (5) are in contact with the surface of the reinforcement ring (20); S3. During the tightening process of the shielding sleeve (5) in S2, the external threaded tube (18) squeezes an extrusion ring (14), and the extrusion ring (14) squeezes the elastic inner curved ring (13), so that the two elastic sleeves (15) respectively squeeze and position the first optical cable (1) and the second optical cable (3). During the process, the elastic inner curved ring (13) squeezes another extrusion ring (14), and the extrusion ring (14) pushes the step ring (11) to move, and the step ring (11) drives the first sloped circular ring (12) to squeeze the first truncated cone washer (10), so that the two first truncated cone washers (10) respectively squeeze and position the first optical cable (1) and the second optical cable (3), thereby forming double positioning; S4. The casing (21) is rotated, and the casing (21) drives the closed ring (22) to rotate the external thread bushing (24), and the external thread bushing (24) is screwed into the internal thread barrel (19) until the two sides of the internal thread barrel (19) are squeezed and embedded in the sealing gasket (26). During the process, the casing (21) drives the second sloped circular ring (25) to squeeze the second truncated cone gasket (23), so that the two second truncated cone gaskets (23) squeeze and position the first optical cable (1) and the second optical cable (3) respectively, thereby forming a triple positioning.

Images