CN104991321A - Optical cable connecting assembly - Google Patents

Abstract

The invention provides an optical cable connection assembly, which includes a fixing sleeve extending left and right and an adhesive sleeve arranged at the right end of the fixing sleeve. section and the extension section protruding from the right end of the fixed sleeve, the extension section is provided with a sleeve stop structure that stops the fixed sleeve in the right direction, and the sleeve stop structure and the right end surface of the fixed sleeve contact, or the sleeve stop structure is spaced apart from the right end surface of the fixed sleeve, and the sealing section is slidably matched with the inner hole wall surface of the fixed sleeve. The optical cable connection assembly of the present invention can always ensure a complete seal between the adhesive sleeve and the fixing sleeve during use, and can be used in outdoor environments or outdoor overhead environments. At the same time, this optical cable connection assembly only needs to be installed or disassembled The plug and the socket can be mated and disconnected by rotating the connecting nut, which is convenient for disassembly and assembly, and improves the efficiency of disassembly and assembly.

Description

An optical cable connection assembly

technical field

    The invention relates to the field of optics, in particular to an optical cable connection assembly.

Background technique

As network applications become more and more common, the coverage of the network becomes wider and wider. In the optical communication system, the optical cable connection assembly plays a very important role as a device for optical cable connection and transfer. The Chinese utility model patent with the authorized announcement number CN201408279Y and the authorized announcement date of 2010.02.17 discloses an optical cable connector, including an outer shell extending left and right and an optical fiber fixing bracket that is a fixing sleeve. The channel, the fixed sleeve is passed through the optical cable installation channel in the outer shell, the optical fiber is fixed in the fixed sleeve through the adhesive sleeve, the left end of the optical fiber is a plug, the right end is connected to the outdoor optical cable, the left end of the outer shell is screwed with the socket shell, and the outer shell The right end of the body is sealed and connected with the outdoor optical cable, so that the insertion position of the optical fiber is sealed and wrapped by the outer shell and the fixed sleeve to realize the waterproof and dustproof sealing of the optical cable connection.

Since the outer casing of this optical cable connection assembly can slide relative to the fixing sleeve in the rightward direction and be separated from the fixing sleeve, when plugging in, it is necessary to first hold the fixing sleeve to insert the plug and the socket, and then insert the The outer shell is connected to the socket shell. When disassembling, it is necessary to separate the outer shell from the socket shell, and then pull out the fixing sleeve backward to separate the plug from the socket. The internal fixing sleeve is disassembled separately, which is very troublesome to operate. At the same time, the plug is separated from the socket under the action of the bonding force between the bonding sleeve and the fixing sleeve during disassembly. The bonding sleeve and the fixing sleeve The bonding position between the barrels bears a very large tensile force. After a period of use, this position is easily torn by force and causes the bonding sleeve to separate from the fixed sleeve, so that the waterproof and dustproof of the right end of the optical cable cannot be guaranteed. If it is not sealed, the optical cable connection assembly will not function as it should.

Contents of the invention

The purpose of the present invention is to provide an optical cable connection assembly, which is used to solve the problem that the sealing assembly of the optical cable connection assembly in the prior art is easy to separate from the adhesive sleeve and the optical fiber fixing bracket during use, resulting in sealing failure.

In order to solve the above-mentioned technical problems, the optical cable connection assembly of the present invention adopts the following technical scheme: an optical cable connection assembly, including a fixing sleeve extending left and right and an adhesive sleeve arranged at the right end of the fixing sleeve, and the optical fiber is passed through the fixing sleeve. A plug for mating with the socket is connected, and the bonding sleeve includes a sealing section located in the fixing sleeve and sealingly fitted with the wall surface of the inner hole of the fixing sleeve and an extension section protruding from the right end of the fixing sleeve. The segment is provided with a sleeve stop structure that stops the fixed sleeve in the rightward direction, and the sleeve stop structure is in contact with the right end face of the fixed sleeve, or the sleeve stop structure is in contact with the fixed sleeve The right end surface of the right end surface is provided at intervals and the sealing section is slidingly fitted with the wall surface of the inner hole of the fixed sleeve.

The sleeve stop structure is spaced apart from the right end surface of the fixed sleeve, the sealing section is slidingly fitted with the wall surface of the inner hole of the fixed sleeve, and the sealing section is provided with a sealing ring for sliding sealing with the fixed sleeve.

The outer circumference of the fixed sleeve is equipped with a connecting nut for threaded connection with the socket housing on the socket for relative rotation along the axis. The cap carries out the nut stop structure of stop limit.

The left end of the fixing sleeve is provided with pins for inserting into the slots on the socket housing to prevent the fixing sleeve from rotating relative to the socket housing.

The plug cooperates with the fixed sleeve for guiding movement in the axial direction, and cooperates with the fixed sleeve in the circumferential direction for anti-rotation. A spring is provided between the plug and the bonding sleeve to provide the insertion force of the plug to the left.

The plug is guided and moved in the fixed sleeve by the fixed seat, and the fixed seat is provided with a radial floating installation hole for inserting the plug in the axial direction and for making the plug float in the radial direction.

The extension section of the adhesive sleeve of the optical cable connection assembly of the present invention is provided with a sleeve stop structure that stops and limits the fixed sleeve in the rightward direction, wherein the sleeve stop structure has two structural forms, one One is that the sleeve stop structure is directly in contact with the right end face of the fixed sleeve, and the sealing section of the adhesive sleeve and the fixed sleeve are relatively fixed and tightly matched; the other is that the sleeve stop structure is spaced apart from the right end face of the fixed sleeve. There is a certain relative moving distance between the adhesive sleeve and the fixed sleeve, and the sealing section of the adhesive sleeve and the fixed sleeve are sliding and sealed, so that when the fixed sleeve is pulled out to the right for disassembly, the adhesive sleeve can be placed on the fixed sleeve. The cylinder moves to the right under the pushing action of the sleeve stop structure, without breaking the sealing connection relationship between the adhesive sleeve and the fixed sleeve, ensuring a good seal.

Further, there is a certain distance between the sleeve stop structure and the right end surface of the fixed sleeve, which reduces the manufacturing precision of the adhesive sleeve and the fixed sleeve, and reduces the production cost. At the same time, the sealing section realizes sliding and sealing fit through the sealing ring , It also ensures a good waterproof and dustproof effect.

Further, the fixing sleeve is provided with a nut stop structure, and when dismounting, it is only necessary to rotate the connection nut to move it to the right to disengage from the socket housing of the socket, and the connection nut pushes the nut stop structure to drive the fixed sleeve Moving to the right, the plug in the fixed sleeve can be separated from the socket, which is convenient for disassembly. At the same time, the connecting nut will not be separated from the fixed sleeve, so it is not easy to lose.

Further, the pinion at the left end of the fixing sleeve can ensure that when the fixing sleeve is inserted into the socket housing and the connecting nut is rotated for connection, the fixing sleeve will not rotate together with the connecting nut.

Furthermore, the radial floating installation hole on the fixing seat can make the plug float in the radial direction, and can adapt to a large error when plugging, thereby improving the applicability.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of Embodiment 1 of the optical cable connection assembly of the present invention;

Fig. 2 is a cross-sectional view along the axial direction of the optical cable connection assembly in Fig. 1 in use;

FIG. 3 is a schematic structural diagram of the SC plug in FIG. 2 .

In the figure: 1. Socket; 2. Plug; 3. Socket Shell; 4. Fixed Sleeve; 5. Connecting Nut; 6. Optical Fiber; 7. Spring; 8. Outdoor Optical Cable; 9. C-ring; 10. O Type ring; 11, fixed seat; 12, rubber ring; 13, retaining ring; 14, bonding sleeve; 110, radial floating mounting hole; 140, glue injection cavity;

Detailed ways

The optical cable connection assembly of the present invention will be described in detail below in conjunction with the accompanying drawings:

Embodiment 1 of the optical cable connection assembly of the present invention: as shown in Figure 1-3, it includes a fixing sleeve 4, the fixing sleeve extends in the left and right directions, the left end of the fixing sleeve is open, and the right end is provided with an inward edge, and the fixing sleeve An adhesive sleeve 14 is inserted at the right end of the sleeve, and the adhesive sleeve extends in the left and right directions and includes two parts, one part is a sealing section located in the fixed sleeve and the inner hole wall of the fixed sleeve is sealed, and the other is a sealing section formed by the sealing section. The right end extends to the right and extends from the inversion of the right end of the fixed sleeve along the central hole. The extension is used for inserting the outdoor optical cable 8. A glue injection cavity 140 is provided in the sealing section of the bonding sleeve. A sleeve stop structure is provided on the right side of the fixed sleeve on the extended section of the sleeve, and there is a certain interval between the sleeve stop structure and the right end face of the fixed sleeve. In this embodiment, the sleeve stop structure is The ring is arranged on the C-shaped ring 9 on the extension section, and the extension section is provided with a ring groove for installing the C-shaped ring. There is an annular groove on the sealing section, and an O-ring 10 is installed in the annular groove. Since there is a certain distance between the C-ring and the right end face of the fixed sleeve, when the fixed sleeve and the bonding sleeve move to each other, the O-ring 10 The type ring can realize the sliding seal of the bonding sleeve and the fixed sleeve, and ensure a good waterproof and dustproof effect at the joint position of the bonding sleeve and the fixed sleeve.

The outer circumference of the fixed sleeve is provided with a connecting nut 5, the connecting nut is located at the left end of the fixed sleeve and is used for threaded connection with the socket housing 3 on the socket 1, the connecting nut can be opposite to the fixed sleeve along the fixed sleeve The axis of the fixed sleeve rotates, and the outer peripheral surface of the fixed sleeve is provided with a convex edge at the left end position, and the inner hole surface of the connecting nut is provided with a stop surface that cooperates with the convex edge, and the convex edge is used to stop the connecting nut. The cap is detached from the fixed sleeve, and the outer peripheral surface of the fixed sleeve is also provided with a nut stop structure on the right side of the connecting nut for stopping and limiting the connecting nut in the rightward direction. The stop structure is used to prevent the connecting nut from being separated from the fixed sleeve from the right side, and to prevent the connecting nut from being separated from the fixed sleeve during transportation or use and being lost. In this embodiment, the nut stop structure is a retaining ring 13 , the distance between the retaining ring and the convex edge is greater than the distance between the stop surface of the connecting nut and the right end face of the connecting nut, so that the connecting nut can move axially on the fixed sleeve to a certain extent.

The inner hole of the fixed sleeve is provided with a plug 2 adapted to the socket. The plug connects with the outdoor optical cable through the optical fiber 6 in the glue injection cavity of the bonding sleeve to realize the connection with the outdoor optical cable. The plug guides and slides through the fixing seat 11. Assembled in the fixed sleeve, the fixed base is provided with a radial floating installation hole 110 extending left and right, the plug is mounted in the radial floating installation hole, the diameter of the radial floating installation hole is larger than the outer diameter of the plug so that the plug can The floating and offset of movement in the radial direction, when the manufacturing accuracy of the socket is low and there is a certain radial error, the plug can radially float to adapt to this part of the error, to achieve accurate insertion, and to improve the applicability of the optical cable connection assembly The wall of the inner hole of the fixed sleeve is provided with an axially extending guide chute, and the fixed seat is provided with a slider that slides with the guide chute. Through the cooperation of the guide chute and the slider, the fixed sleeve and the slider are realized. The fixed seat is prevented from rotating in the circumferential direction, which avoids twisting the optical fiber due to the circumferential rotation between the fixed seat and the fixed sleeve, resulting in abnormal transmission of optical signals; a spring 7 is provided between the plug and the bonding sleeve, and the two ends of the spring are respectively The top is pressed on the plug and the bonding sleeve, the optical fiber is located in the middle of the spring, and the spring provides the elastic force to the left of the fixed seat, so that when the clamping sleeve is inserted into the socket, the plug has sufficient supporting force Make it inserted into the socket, at the same time, the spring can also act as a buffer for movement, avoiding the impact during the insertion process, and protecting the plug. On the other hand, the elasticity of the spring determines that it can expand and contract in the axial direction, so as to ensure The socket has a large axial tolerance in the axial direction, and when the manufacturing precision of the socket is low, it can also achieve docking; the right end surface of the fixed seat is provided with a boss extending to the right, and this part of the boss extends into the spring. The spring is radially limited in the middle cavity to prevent the spring from being deflected by force and affecting the insertion. The right end surface of the fixing seat is also provided with an annular positioning groove for the left end of the spring to extend into. In this embodiment, the plug It is an SC plug connected to the end of the optical fiber, and the SC plug has removed its own buckle locking structure. The plug is an SC optical module that is compatible with the SC plug. Since the SC plug is a direct plug-in connection plug, it is more suitable for this Fiber optic cable connection assembly.

The outer peripheral surface of the left end of the fixed sleeve is provided with an inner concave ring groove, and the rubber ring 12 is housed in the inner concave ring groove. Pressed on the rubber ring, thereby realizing the waterproof sealing of the left end face of the fixed sleeve and the socket housing, the left end of the fixed sleeve is also provided with a plugging tooth 40 extending to the left on the left side of the rubber ring, and the plugging teeth have multiple and Evenly distributed in the circumferential direction, the pins are arc-shaped and are used for plugging and matching with the slots on the socket housing, so as to avoid inserting the fixed sleeve into the socket housing, and when the connecting nut is rotated for connection, the fixed sleeve and the connecting nut The cap moves and turns.

When the optical cable connection assembly of this embodiment is in use, hold the fixing sleeve to align the front end of the pin and insert it into the slot of the socket housing, and turn the connecting nut forward. At this time, the fixing sleeve moves to the left along with the connecting nut. The plug radially floats and aligns with the socket, and under the elastic force of the spring, it is inserted into the socket, and the connecting nut continues to be rotated forward until it is tightened, that is, the optical cable is connected; when dismounting, reverse the connecting nut, and the connecting nut is relative to the The socket housing moves to the right, the right end of the connecting nut contacts the nut stop structure and pushes the fixed sleeve to move to the right, the fixed sleeve moves right and its right end surface contacts the sleeve stop structure, and pushes the bonding sleeve to the right Moving, the bonding sleeve pulls the plug through the optical fiber to make it out of the socket, and continues to reverse the connection nut until it is completely separated from the socket housing, that is, the disassembly of the connector is realized.

Embodiment 2 of the optical cable connection assembly of the present invention: the difference from Embodiment 1 is that, when installed in place, the sleeve stop structure on the extension section is just in contact with the right end surface of the fixed sleeve, that is, the right end surface of the sealing section The distance from the stop surface of the sleeve stop structure is just equal to the thickness of the inturned edge at the right end of the fixed sleeve. At this time, the sealing section can be sealed with the fixed sleeve through the sealing ring, or can be directly connected with the fixed sleeve. Adhesive seal.

Embodiment 3 of the optical cable connection assembly of the present invention: the difference from Embodiment 1 is that the connection nut can be connected to the socket housing through an elastic hook.

Embodiment 4 of the optical cable connection assembly of the present invention: the difference from Embodiment 1 is that the sleeve stop structure is a limit pin provided on the bonding sleeve, and the fixed sleeve is stopped by the bolt.

Embodiment 5 of the optical cable connection assembly of the present invention: the difference from Embodiment 1 is that the sleeve stop structure is a limit screw that is optionally installed on the bonding sleeve.

Embodiment 6 of the optical cable connection assembly of the present invention: the difference from Embodiment 1 lies in that the stop structure of the nut is a limit pin provided on the fixing sleeve.

Embodiment 7 of the optical cable connection assembly of the present invention: the difference from Embodiment 1 is that the plug and the fixing seat are integrally arranged, that is, the outer peripheral surface of the socket is slidably matched with the wall surface of the inner hole of the fixing sleeve.

The eighth embodiment of the optical cable connection assembly of the present invention: the difference from the first embodiment is that the fixed sleeve and the fixed seat realize anti-rotation through surface fit, that is, the inner hole wall of the fixed sleeve is polygonal, and the corresponding fixed seat The outer peripheral surface of the utility model is a polygon adapted to the wall surface of the inner hole of the fixed sleeve.

When the optical cable connection assembly of the present invention is in use, the adhesive sleeve and the fixed sleeve can always be completely sealed, and there will be no problems such as the direct tearing of the adhesive sleeve and the fixed sleeve in the prior art, resulting in seal failure. It can be used in outdoor environment or outdoor overhead environment. At the same time, during the installation or disassembly process of this optical cable connection assembly, only need to rotate the connection nut to realize the mating and disengagement of the plug and socket, which is convenient for disassembly and assembly, and improves the disassembly and assembly. efficiency.

Claims (6)

1. An optical cable connection assembly, comprising a fixed sleeve extending left and right and an adhesive sleeve located at the right end of the fixed sleeve, the fixed sleeve is connected with a plug for plugging and matching with the socket through an optical fiber, and it is characterized in that, The bonding sleeve includes a sealing section located in the fixing sleeve and sealingly matched with the wall surface of the inner hole of the fixing sleeve and an extension section protruding from the right end of the fixing sleeve. The sleeve stop structure that stops in the direction of the sleeve, the sleeve stop structure is in contact with the right end face of the fixed sleeve, or the sleeve stop structure is spaced from the right end face of the fixed sleeve and the sealing section is in contact with the fixed sleeve Sliding fit on the inner bore wall of the barrel. 2. The optical cable connection assembly according to claim 1, characterized in that, the sleeve stop structure is spaced apart from the right end surface of the fixed sleeve, the sealing section is slidingly fitted with the wall surface of the inner hole of the fixed sleeve, and the sealing section is A sealing ring is provided to realize sliding sealing with the fixed sleeve. 3. The optical cable connection assembly according to claim 2, characterized in that, the outer periphery of the fixed sleeve is equipped with a connecting nut threadedly connected with the socket housing of the socket for relative rotation along the axis, and the connecting nut on the fixed sleeve is The right side of the cap is provided with a nut stop structure for stopping and limiting the connecting nut in the right direction. 4. The optical cable connection assembly according to claim 3, characterized in that, the left end of the fixing sleeve is provided with a plug that fits with the slot on the socket housing to prevent the fixing sleeve from rotating relative to the socket housing. tooth. 5. The optical cable connection assembly according to any one of claims 1-4, characterized in that the plug cooperates with the fixed sleeve for guiding movement in the axial direction, and cooperates with the fixed sleeve in the circumferential direction for anti-rotation, and the plug and adhesive A spring is provided between the sleeves to provide the insertion force of the plug to the left. 6. The optical cable connection assembly according to claim 5, characterized in that the plug is guided and moved in the fixed sleeve through the fixing seat, and the fixing seat is provided with a plug for axial insertion and for making the plug in the radial direction Radial floating mounting holes where floating occurs.