CN211151958U

CN211151958U - Connecting plug-in for optical time domain reflectometer

Info

Publication number: CN211151958U
Application number: CN201922269796.1U
Authority: CN
Inventors: 易佳胜; 白海军
Original assignee: Haitai Nike Tianjin Industrial Co ltd
Current assignee: Haitai Nike Tianjin Industrial Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-07-31
Anticipated expiration: 2029-12-17

Abstract

The utility model discloses a light time domain reflectometer is with connecting plug-in components, including first shell, the top of first shell has been seted up into the line mouth, and has been inserted into the inside of line mouth and be equipped with the solidus cover, the inside of first shell is inlayed and is had first spacing ring, the inside of first shell is inserted and is equipped with first endotheca, and the bottom of first endotheca is inlayed and is had the access terminal, the outside cover that inserts the terminal is equipped with the terminal cover, and the bottom welded fastening of terminal cover has the spring, the top of spring is fixed with contact pad. The utility model discloses a be provided with the fastening swivel nut in the outside of second shell, the fastening swivel nut passes through the meshing of screw thread and connects first shell and second shell for the device firm in connection, and the separation dismantlement is convenient, simultaneously, sets up the second spacing ring block in the outside of second shell, restricts the position of fastening swivel nut, and the effectual fastening swivel nut that prevents rotates not hard up, has improved the device's connection steadiness greatly.

Description

Connecting plug-in for optical time domain reflectometer

Technical Field

The utility model relates to a connect plug-in components technical field specifically is a light time domain reflectometer is with connecting plug-in components.

Background

An optical time domain reflectometer is an instrument for understanding a plurality of performances such as uniformity, defects, fracture, joint coupling and the like of an optical fiber through analysis of a measurement curve, is generally used for measuring attenuation, joint loss, positioning of a fault point of the optical fiber, understanding of loss distribution conditions of the optical fiber along the length and the like, is an essential tool in optical cable construction, maintenance and monitoring, and is generally used by using a connecting plug-in and the optical fiber for connection, but the existing connecting plug-in is mostly connected in a direct plug-in mode, connection is unstable and easy to loosen, the internal seal of the connecting plug-in is not tight, so that rainwater is easy to enter a connecting part to influence the work of the connecting part, and a terminal of the connecting plug-in is easy to loosen with the plug-in part, so that the connecting part is easy to contact badly, therefore, in order to solve the problems, a connecting plug-in unit for an optical time domain reflector is provided, which is stable in connection and good in protection.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an optical time domain reflectometer is with connecting plug-in components to solve present optical time domain reflectometer that proposes in the above-mentioned background art and lead to connecting the position not tight owing to the mode that adopts the grafting, and terminal contact position contact failure easily, influence circuit work, and the not strong problem of sealed protection nature of connecting plug-in components.

In order to achieve the above object, the utility model provides a following technical scheme: a connecting plug-in component for an optical time domain reflectometer comprises a first shell, wherein a wire inlet is formed in the top of the first shell, a wire fixing sleeve is inserted into the wire inlet, a first limiting ring is embedded into the first shell, a first inner sleeve is inserted into the first shell, an access terminal is embedded into the bottom of the first inner sleeve, a terminal sleeve is sleeved on the outer side of the access terminal, a spring is fixedly welded to the bottom of the terminal sleeve, a contact gasket is fixed to the top of the spring, a second inner sleeve is sleeved on the outer side of the terminal sleeve, a second shell is sleeved on the outer side of the second inner sleeve, a sealing ring is clamped between the first shell and the second shell, a fixing sleeve is fixedly mounted above the inner portion of the second shell, a wire outlet is formed in the bottom of the second shell, a fastening screw sleeve is sleeved on the outer side of the second shell, and a second limiting ring is mounted below the fastening screw sleeve, and the second limiting ring is sleeved on the outer wall of the second shell.

Preferably, the wire fixing sleeve comprises a supporting sleeve, a sealing sleeve, sealing rings and clamping teeth, the sealing sleeve is welded on the outer side of the bottom of the supporting sleeve, the sealing rings are welded on the bottom of the supporting sleeve, the clamping teeth are evenly welded on the inner wall of the supporting sleeve, the two groups of wire fixing sleeves are arranged, and the two groups of wire fixing sleeves are respectively embedded in the wire inlet and the wire outlet.

Preferably, a clamping groove is formed in the inner wall of the first shell, and the first limiting ring is embedded in the clamping groove formed in the inner wall of the first shell.

Preferably, the access terminal and the terminal sleeve are designed to be a sliding structure, and the contact gasket and the terminal sleeve are designed to be an elastic telescopic structure through a spring.

Preferably, the inner wall of the second shell is provided with threads, the outer wall of the lower end of the fixing sleeve is provided with threads, the fixing sleeve and the second shell are designed to be in a threaded rotary connection structure through threaded engagement, and the inner wall of the fixing sleeve is designed to be in a regular hexagon shape.

Preferably, the outer wall of the second shell is provided with threads, the outer wall of the first shell is provided with threads, the inner wall of the fastening threaded sleeve is provided with threads, the fastening threaded sleeve is in a threaded rotating structure with the first shell and the second shell through threaded engagement, the outer wall of the second shell is provided with a clamping groove, and the second limiting ring is sleeved in the clamping groove formed in the outer wall of the second shell.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the fastening screw sleeve is arranged on the outer side of the second shell and is connected with the first shell and the second shell through threaded engagement, so that the device is firm in connection, convenient to separate and disassemble, and meanwhile, the second limiting ring is clamped on the outer side of the second shell to limit the position of the fastening screw sleeve, the fastening screw sleeve is effectively prevented from rotating and loosening, and the connection stability of the device is greatly improved.

2. The sealing ring is arranged between the second shell and the first shell in an elastic filling mode, so that the joint of the first shell and the second shell is tight, meanwhile, two groups of wire fixing sleeves are arranged and are respectively inserted between the wire fixing sleeves and the wire outlet, the wire fixing sleeves and the wire outlet are clamped and filled by the sealing sleeves on the wire fixing sleeves, and the sealing ring is matched, so that the device is tight in sealing, and rainwater and dust are effectively prevented from entering the interior of the plug-in unit to influence the normal work of a line.

3. Carry out elastic support to contact pad through setting up the spring for contact pad is connected closely with access terminal, makes access terminal and terminal cover zonulae occludens through spring and contact pad, has effectually prevented because the lateral wall contact failure of access terminal and terminal cover leads to the circuit transmission to be interrupted, has improved the device job stabilization nature greatly.

Drawings

FIG. 1 is a schematic sectional view of the front view of the structure of the present invention;

FIG. 2 is a schematic front view of the structure of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

fig. 4 is a schematic top view of the fixing sleeve of the present invention;

fig. 5 is a schematic structural front sectional view of the wire fixing sleeve of the present invention.

In the figure: 1. a first housing; 2. a wire inlet; 3. fixing a wire sleeve; 31. a support sleeve; 32. sealing sleeves; 33. a seal ring; 34. clamping teeth; 4. a first limit ring; 5. a first inner sleeve; 6. an access terminal; 7. a terminal cover; 8. a spring; 9. a contact pad; 10. a second inner sleeve; 11. a second housing; 12. a seal ring; 13. fixing the sleeve; 14. an outlet; 15. fastening a threaded sleeve; 16. and a second limit ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides an embodiment:

a connecting plug-in for an optical time domain reflectometer comprises a first shell 1, wherein the top of the first shell 1 is provided with a wire inlet 2, a wire fixing sleeve 3 is inserted in the wire inlet 2, the wire fixing sleeve 3 comprises a supporting sleeve 31, two groups of wire fixing sleeves 3, two sealing rings 33 and two clamping teeth 34, the outer side of the bottom of the supporting sleeve 31 is welded with the sealing sleeve 32, the bottom of the supporting sleeve 31 is welded with the sealing ring 33, the clamping teeth 34 are uniformly welded on the inner wall of the supporting sleeve 31, the two groups of wire fixing sleeves 3 are respectively embedded in the wire inlet 2 and the wire outlet 14, the sealing sleeve 32 on the wire fixing sleeve 3 is filled and embedded between the wire inlet 2 and the wire outlet 14, meanwhile, when optical fibers are inserted in the wire fixing sleeve 3 in use, the sealing rings 33 fasten the optical fibers, so that the sealing rings 33 are tightly connected with the optical fibers, the sealing rings 32 are mutually matched with the sealing rings 33, so that the optical fibers to be connected are tightly connected with the wire inlet 2 and the wire outlet 14, the tightness of the junction of the device is greatly improved, dust rainwater is effectively prevented from entering the device from the gap of the junction, line transmission is affected, the working stability of the device is improved, meanwhile, the 3 sleeves of the wire fixing sleeve are arranged and sleeved on the outer side of the optical fiber, the optical fiber of the junction is fixedly supported, the optical fiber is protected, when the device is installed and used, the outer wall of the optical fiber is clamped by the clamping teeth 34, the optical fiber is effectively prevented from falling off due to pulling, and the connection protection performance of the device is greatly improved.

Inside of first shell 1 is inlayed and is had first spacing ring 4, the inside of first shell 1 is inserted and is equipped with first endotheca 5, the draw-in groove has been seted up on the inner wall of first shell 1, first spacing ring 4 is inlayed in the draw-in groove of seting up on first shell 1 inner wall, during the use, through 4 blocks of first spacing ring in the draw-in groove of seting up on first shell 1 inner wall is sent down at first endotheca 5, make first spacing ring 4 restrict the position of first endotheca 5 fixedly, the convenience is to the installation and the dismantlement of first endotheca 5, it is nimble convenient to use.

The bottom of first endotheca 5 is inlayed and is had access terminal 6, the outside cover of access terminal 6 is equipped with terminal cover 7, and the bottom welded fastening of terminal cover 7 has spring 8, the top of spring 8 is fixed with contact pad 9, access terminal 6 and terminal cover 7 design are sliding structure, contact pad 9 passes through spring 8 and terminal cover 7 design to elastic expansion structure, this connection plug-in components inserts when using access terminal 6 and establishes inside terminal cover 7, contact pad 9 of terminal cover 7 bottom installation and the bottom in close contact with of access terminal 6 under spring 8's elastic support, when effectual preventing access terminal 6 from inserting and establishing inside terminal cover 7, because access terminal 6 receives the influence with the line transmission that terminal cover 7 lateral wall contact failure leads to, the line transmission stability of the device has been improved greatly.

The outer side of the terminal sleeve 7 is sleeved with a second inner sleeve 10, the outer side of the second inner sleeve 10 is sleeved with a second outer shell 11, a sealing ring 12 is clamped between the first outer shell 1 and the second outer shell 11, during installation and connection, the sealing ring 12 deforms due to extrusion of the first outer shell 1 and the second outer shell 11, the deformed sealing ring 12 is filled at the connection position between the first outer shell 1 and the second outer shell 11, so that the connection position of the device is tight, dust and rainwater are effectively prevented from entering the connection position through a gap of the connection position to influence line transmission, the working stability of the device is greatly improved, a fixing sleeve 13 is fixedly installed above the inner part of the second outer shell 11, the inner wall of the second outer shell 11 is provided with threads, the outer wall of the lower end of the fixing sleeve 13 is provided with threads, the fixing sleeve 13 and the second outer shell 11 are designed to be in a threaded rotary connection structure through meshing of the, the inner wall design of fixed sleeve 13 is regular hexagon, during the installation, place second endotheca 10 inside second shell 11, through rotating fixed sleeve 13, under the meshing of screw thread, make fixed sleeve 13 fixed mounting in the inner wall top of second shell 11, fixed sleeve 13 restricts fixedly to second endotheca 10, make firm and convenient to detach of second endotheca 10 installation, it is nimble convenient, the inner wall design of fixed sleeve 13 is regular hexagon, be convenient for insert interior hexagonal spanner inside fixed sleeve 13, it fixes on second shell 11 to rotate to make fixed sleeve 13 fix, and the operation is convenient.

The bottom of the second shell 11 is provided with a wire outlet 14, the outer side of the second shell 11 is sleeved with a fastening screw sleeve 15, a second limit ring 16 is arranged below the fastening screw sleeve 15, the second limit ring 16 is sleeved on the outer wall of the second shell 11, the outer wall of the second shell 11 is provided with a thread, the outer wall of the first shell 1 is provided with a thread, the inner wall of the fastening screw sleeve 15 is provided with a thread, the fastening screw sleeve 15 is in a thread rotating structure with the first shell 1 and the second shell 11 through the meshing of the threads, the outer wall of the second shell 11 is provided with a clamping groove, the second limit ring 16 is sleeved in the clamping groove arranged on the outer wall of the second shell 11, during installation, the bottom of the first shell 1 is aligned with the upper part of the second shell 11, the first shell 1 is sleeved on the outer side of the fixed sleeve 13, the fastening screw sleeve 15 moves upwards through rotating the fastening screw sleeve 15 under the meshing of the threads, the first shell 1 and the second shell 11 that make are connected firmly, with the second spacing ring 16 block in the draw-in groove of seting up on the outer wall of second shell 11, restrict the position of fastening swivel nut 15, prevent that fastening swivel nut 15 from owing to rotate when using not hard up, lead to this connection plug-in components to drop, have improved the device's firm in connection greatly.

The working principle is as follows: during installation, a worker inserts two ends of two optical fibers to be connected into the two groups of wire fixing sleeves 3 respectively, the optical fibers are inserted into the sealing rings 33 because the sealing rings 33 are made of elastic rubber, the optical fibers are tightly connected with the wire fixing sleeves 3 under the tightening of the sealing rings 33, and meanwhile, the clamping teeth 34 are clamped on the outer walls of the optical fibers to prevent the optical fibers from loosening and falling off;

during installation, an operator respectively welds optical fibers to be connected at two ends on an access terminal 6 in a first inner sleeve 5 and a terminal sleeve 7 in a second inner sleeve 10, the operator firstly places the first inner sleeve 5 in a first outer shell 1, then clamps and fixes a first limiting ring 4 in a clamping groove formed in the first outer shell 1, fixes the first inner sleeve 5 through the first limiting ring 4, then inserts the second inner sleeve 10 in a second outer shell 11, and connects a fixing sleeve 13 with the inner wall of the second outer shell 11 in a threaded manner in a rotating manner, so that the fixing sleeve 13 clamps the second inner sleeve 10, and fixes the second inner sleeve 10 in the second outer shell 11;

during installation, a worker aligns the first shell 1 right above the second shell 11, so that the first shell 1 is sleeved outside the upper part of the fixed sleeve 13, at the moment, the access terminal 6 is inserted into the terminal sleeve 7, and the spring 8 elastically supports the contact gasket 9, so that the contact gasket 9 is in close contact with the bottom of the access terminal 6; subsequently, the worker rotates the fastening threaded sleeve 15, the fastening threaded sleeve 15 moves upwards under the engagement of the threads, the first shell 1 and the second shell 11 are fastened and connected, and the worker clamps the second limiting ring 16 in a clamping groove formed in the outer side of the second shell 11, so that the second limiting ring 16 fixes the fastening threaded sleeve 15 and limits the movement of the fastening threaded sleeve 15;

during operation, by the extrusion of first shell 1 and second shell 11, install the sealing ring 12 between first shell 1 and second shell 11 and receive the extrusion to take place the deformation, fill in the junction between first shell 1 and second shell 11, guarantee the connection tightness of first shell 1 and second shell 11.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A connection plug-in for an optical time domain reflectometer, comprising a first housing (1), characterized in that: the cable fixing device is characterized in that a cable inlet (2) is formed in the top of the first shell (1), a cable fixing sleeve (3) is inserted into the cable inlet (2), a first limiting ring (4) is embedded into the first shell (1), a first inner sleeve (5) is inserted into the first shell (1), an access terminal (6) is embedded into the bottom of the first inner sleeve (5), a terminal sleeve (7) is sleeved on the outer side of the access terminal (6), a spring (8) is welded and fixed to the bottom of the terminal sleeve (7), a contact gasket (9) is fixed to the top of the spring (8), a second inner sleeve (10) is sleeved on the outer side of the terminal sleeve (7), a second shell (11) is sleeved on the outer side of the second inner sleeve (10), a sealing ring (12) is clamped between the first shell (1) and the second shell (11), and a fixing sleeve (13) is fixedly mounted above the inner portion of the second shell (11), an outlet (14) is formed in the bottom of the second shell (11), a fastening threaded sleeve (15) is sleeved on the outer side of the second shell (11), a second limiting ring (16) is installed below the fastening threaded sleeve (15), and the second limiting ring (16) is sleeved on the outer wall of the second shell (11).

2. A connector insert for an optical time domain reflectometer as in claim 1, wherein: solidus cover (3) are including supporting sleeve (31), seal cover (32), sealing washer (33) and card tooth (34), the bottom outside welding of supporting sleeve (31) has seal cover (32), the bottom welding of supporting sleeve (31) has sealing washer (33), even welding has card tooth (34) on the inner wall of supporting sleeve (31), solidus cover (3) are provided with two sets ofly altogether, and two sets of solidus cover (3) are inlayed respectively inside income line mouth (2) and outlet (14).

3. A connector insert for an optical time domain reflectometer as in claim 1, wherein: the inner wall of the first shell (1) is provided with a clamping groove, and the first limiting ring (4) is embedded in the clamping groove formed in the inner wall of the first shell (1).

4. A connector insert for an optical time domain reflectometer as in claim 1, wherein: the access terminal (6) and the terminal sleeve (7) are designed to be of a sliding structure, and the contact gasket (9) and the terminal sleeve (7) are designed to be of an elastic telescopic structure through the spring (8).

5. A connector insert for an optical time domain reflectometer as in claim 1, wherein: the inner wall of the second shell (11) is provided with threads, the outer wall of the lower end of the fixed sleeve (13) is provided with threads, the fixed sleeve (13) is in a threaded rotary connection structure with the second shell (11) through threaded engagement, and the inner wall of the fixed sleeve (13) is in a regular hexagon design.

6. A connector insert for an optical time domain reflectometer as in claim 1, wherein: the outer wall of the second shell (11) is provided with threads, the outer wall of the first shell (1) is provided with threads, the inner wall of the fastening screw sleeve (15) is provided with threads, the fastening screw sleeve (15) is designed into a thread rotating structure with the first shell (1) and the second shell (11) through meshing of the threads, the outer wall of the second shell (11) is provided with a clamping groove, and the second limiting ring (16) is sleeved in the clamping groove formed in the outer wall of the second shell (11).