SC quick-plug adapter structure

Abstract

The utility model discloses an SC quick-plug adapter structure, which belongs to the technical field of communication adapters, and comprises an adapter main body which is hollow inside and is provided with openings at two ends, and one end part of the adapter main body is provided with a limiting groove; the butt joint is internally provided with a channel through which an optical fiber penetrates, the two end parts of the butt joint are provided with connecting parts clamped with the optical fiber joints, and the butt joint is coaxially arranged in the adapter main body; one end part of the outer sleeve is provided with a limiting structure, and the limiting structure can rotate between a first position and a second position in the limiting groove; at the first position, the outer sleeve is sleeved on the butt joint, and the limiting structure enters the limiting groove; when the limiting structure is located at the second position, the limiting structure and the limiting groove are locked, so that axial limiting of the outer sleeve and the butt joint is achieved; according to the SC quick-plug adapter structure, assembling and locking can be completed only by rotating the outer sleeve to enable the limiting structure to be switched between the two positions, and the operation steps are greatly simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication adapter technical field especially relates to a SC fast plug adapter structure. BACKGROUND

[0002] The existing SC adapter realizes the butt joint of the joint part of two optical fibers through the assembly of multiple accessories, and the final locking or locking link mainly adopts the traditional threaded connection mode, and the connection and locking are realized by screwing multiple threads in the assembly process. This structure has the following problems:

[0003] Complicated operation: a large number of thread turns need to be rotated to complete the connection, the operation steps are complex and time-consuming, and it is not convenient for quick connection and disassembly.

[0004] Optical cable is easily damaged: the internal optical cable may be twisted due to thread rotation, and multiple twists will cause damage to the internal structure of the optical fiber, increase transmission loss, and shorten the service life.

[0005] Therefore, there is an urgent need for an SC adapter structure that is easy to operate and can effectively protect the optical cable. INVENTION CONTENTS

[0006] The utility model embodiment provides a SC fast plug adapter structure to solve the problems in the prior art.

[0007] The utility model embodiment adopts the following technical scheme: a SC fast plug adapter structure, comprising: an adapter main body, which is hollow inside and open at both ends, and one end of the adapter main body has a limiting groove; a butt joint, which has a channel for the optical fiber to pass through inside, both end portions of which have a connecting part for clamping the optical fiber joint, and the butt joint is coaxially installed in the adapter main body; an outer sleeve, one end of which has a limiting structure, and the limiting structure can rotate between a first position and a second position in the limiting groove; when the first position, the outer sleeve is sleeved on the butt joint and the limiting structure enters the limiting groove; when the second position, the limiting structure is locked with the limiting groove to realize the axial limiting of the outer sleeve and the butt joint.

[0008] Preferably, the adapter structure further comprises an inner sleeve and a plug; the inner sleeve is coaxially arranged inside the outer sleeve and at least partially abuts on the adapter main body, the plug is sealed into one end of the inner sleeve away from the adapter main body, and the plug has a perforation for the optical fiber to pass through inside; the first limiting part on the outer sleeve abuts on the plug to force the plug to be axially limited between the inner sleeve and the first limiting part.

[0009] Preferably, the plug is configured of rubber material or silica gel material.

[0010] Preferably, the limiting groove comprises a first groove position extending axially at the end of the adapter body, and a second groove position extending along the circumference of the adapter body from the end of the first groove position; when in the first position, the limiting structure is located in the first groove position; when in the second position, the limiting structure is located in the second groove position and at least partially abuts against the side wall of the second groove position, so as to axially limit the outer sleeve and the connector.

[0011] Preferably, the end of the second groove position further has a locking groove extending axially along the adapter body, and the limiting structure is configured as a first limiting block and a second limiting block fixedly connected to the inner wall of the outer sleeve; when the limiting structure moves to the second position, the plug is elastically reset to push the second limiting block into the locking groove, and the first limiting block abuts against the side wall of the second groove position.

[0012] Preferably, the plug is integrally formed with a tail sleeve.

[0013] Preferably, the outer wall of the inner sleeve is provided with a first annular protrusion coaxial therewith, the outer wall of the connector is provided with a second annular protrusion coaxial therewith, the inner sleeve is slidably inserted into the connector to push the second annular protrusion to abut against a first limiting wall in the adapter body, and the first annular protrusion abuts against the end of the adapter body, so as to axially limit the inner sleeve.

[0014] Preferably, the outer peripheral wall of the plug is provided as a tapered surface, the end of the inner sleeve is provided with a tapered groove matched with the shape of the plug, and the plug is embedded in the tapered groove and abuts against a second limiting wall at the end of the tapered groove, so as to axially limit the plug.

[0015] The above-mentioned at least one technical scheme adopted by the embodiment of the utility model can achieve the following beneficial effects:

[0016] Compared with the traditional scheme relying on a large number of thread turns for tightening, the SC quick plug-in adapter structure only needs to rotate the outer sleeve, and the limiting structure is switched between the two positions, so that the assembly and locking are completed, and the operation steps are greatly simplified. In addition, under the traditional tightening mode, the optical cable connected therewith is easily twisted with the rotation of the thread, and the internal structure of the optical fiber is damaged after multiple twists, which causes the transmission loss to increase. The SC quick plug-in adapter avoids a large number of twisting actions, protects the optical cable from additional torsion, maintains the stability of the optical fiber performance, and prolongs the service life. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the utility model, and constitute a part of the utility model. The schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute an improper limitation on the utility model. In the drawings:

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the adapter structure connecting two optical fibers according to the present application;

[0019] Figure 2 is a sectional view of the adapter structure connecting two optical fibers according to the present application;

[0020] Figure 3 is a sectional view according to the present application;

[0021] Figure 4 is an exploded view of the adapter body and the outer sleeve according to the present application;

[0022] Figure 5 is a perspective view of the outer sleeve according to the present application;

[0023] Figure 6 is an assembly view of the adapter and the two optical fibers according to the present application;

[0024] Figure 7 is an exploded view of the inner sleeve and the adapter body according to the present application;

[0025] Figure 8 is an assembly view of the inner sleeve and the plug according to the present application.

[0026] Reference signs

[0027] 1 - adapter body; 11 - limiting groove; 111 - first slot; 112 - second slot; 113 - locking slot; 12 - first limiting wall; 13 - insertion slot; 2 - adapter; 21 - channel; 22 - connecting portion; 23 - second annular protrusion; 3 - outer sleeve; 31 - limiting structure; 311 - first limiting block; 312 - second limiting block; 32 - first limiting portion; 33 - observation hole; 4 - inner sleeve; 41 - first annular protrusion; 42 - taper groove; 43 - second limiting wall; 44 - annular groove; 45 - insertion block; 5 - plug; 51 - perforation; 52 - tail sleeve; 53 - taper surface; 6 - optical fiber. DETAILED DESCRIPTION

[0028] To further illustrate the technical means and effects adopted by the present application to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the present application are described in detail as follows in combination with the drawings and preferred embodiments.

[0029] The technical solutions provided by the embodiments of the present application are described in detail in combination with the drawings as follows.

[0030] Referring to Figures 1 to 8 , the present application provides an SC quick plug adapter structure, which comprises an adapter body 1, an adapter 2 and an outer sleeve 3.

[0031] The inside of the adapter body 1 is hollow and open at both ends, and one end of the adapter body 1 has a limiting groove 11; the inside of the adapter head 2 has a channel 21 for the optical fiber to pass through, and both ends have a connecting part 22 for clamping the optical fiber connector, and the adapter head 2 is coaxially installed in the adapter body 1; one end of the outer sleeve 3 has a limiting structure 31, which can rotate between a first position and a second position in the limiting groove 11; when in the first position, the outer sleeve 3 is sleeved on the adapter head 2 and the limiting structure 31 enters the limiting groove 11; when in the second position, the limiting structure 31 is locked with the limiting groove 11 to achieve axial limiting of the outer sleeve 3 and the adapter head 2.

[0032] In this embodiment, the adapter body 1 serves as the basic frame, and the hollow structure open at both ends provides space for the installation of the adapter head 2 and the optical fiber. The limiting groove 11 at one end is used for subsequent cooperation with the outer sleeve 3. The adapter head 2 is located inside the adapter body 1 and clamps the optical fiber connector through the connecting part 22 at both ends, allowing the optical fiber to access the entire adapter structure. Specifically, the adapter head 2 is a prior art in the field of optical fiber connectors, which serves as a conversion connector to connect two optical fiber connectors. The clamping method of the connecting part 22 and the optical fiber connector can refer to the connection method of the existing technology of optical cable and router interface, and the specific structure of the connecting part 22 is shown in the figure.

[0033] In the initial installation, the outer sleeve 3 is sleeved on the adapter head 2, and the limiting structure 31 at one end enters the limiting groove 11 first, at this time it is in the first position, and the entire structure is preliminarily assembled. Then, rotate the outer sleeve 3 to make the limiting structure 31 rotate from the first position to the second position in the limiting groove 11. In this process, the profile of the limiting groove 11 and the limiting structure 31 fit with each other, and when reaching the second position, they are locked. Through the clamping of this mechanical structure, the outer sleeve 3 and the adapter head 2 are firmly fixed in the axial direction, thereby stabilizing the connection of the entire adapter and the optical fiber connector.

[0034] Compared with the traditional scheme that relies on a large number of thread turns to tighten, this structure only needs to rotate the outer sleeve 3 to switch the limiting structure 31 between the two positions, thereby completing the assembly and locking, and the operation steps are greatly simplified. In addition, under the traditional tightening method, the optical cable connected with the thread is easily twisted as the thread rotates, and the accumulated multiple twists will cause damage to the internal structure of the optical fiber, leading to increased transmission loss. This SC quick plug adapter avoids a large number of twisting actions, protects the optical cable from additional torsion, maintains the stability of the optical fiber performance, and prolongs the service life of the optical fiber.

[0035] In addition, the limiting structure 31 must be rotated to a specific position to be locked or unlocked. Even if it is slightly shaken or collided in daily use, as long as the required rotation angle for unlocking is not reached, it will not be accidentally loosened, ensuring that the optical fiber connection is always reliable.

[0036] In some practical applications, referring to Figures 1 to 4 The adapter structure further comprises an inner sleeve 4 and a plug 5 (the plug 5 is generally configured of rubber or silicone. The plug 5 is made of soft and elastic materials such as rubber or silicone, tightly plugged into one end of the inner sleeve 4, and the inner perforation 51 is provided for the optical fiber to pass through. Rubber and silicone have good plasticity and can seamlessly fill the port gap of the inner sleeve 4, effectively preventing impurities such as dust and water vapor from entering the inside of the adapter. The perforation 51 of the plug 5 can accommodate the optical fiber and also tightly hold and fix the optical fiber); the inner sleeve 4 is coaxially arranged inside the outer sleeve 3 and at least partially abuts on the adapter body 1, the plug 5 is tightly plugged into one end of the inner sleeve 4 away from the adapter body 1, and the plug 5 has a perforation 51 inside for the optical fiber to pass through; the first limiting portion 32 on the outer sleeve 3 abuts on the plug 5 to force the plug 5 to be axially limited between the inner sleeve 4 and the first limiting portion 32.

[0037] In this embodiment, when subjected to external pressure or impact, the inner sleeve 4 can disperse part of the energy to avoid the impact force directly acting on the precise connection portion 22 of the adapter body 1 and the docking head 2.

[0038] The first limiting portion 32 of the outer sleeve 3 abuts against the plug 5, tightly limiting the plug 5 between the inner sleeve 4 and the first limiting portion 32, clearly defining the axial position of the plug 5, and ensuring that the plug 5 always maintains a good sealing state. At the same time, the existence of the first limiting portion 32 connects the inner sleeve 4, the plug 5 and the outer sleeve 3 into a tightly cooperating whole, and the components cooperate with each other, so that the entire adapter structure is more compact and stable, providing a solid guarantee for optical fiber communication.

[0039] In some practical applications, referring to Figures 2 to 5 As shown in the figure, the limiting groove 11 comprises a first groove position 111 extending axially from the end of the adapter body 1, and a second groove position 112 extending along the circumferential direction of the adapter body 1 from the end of the first groove position 111; when in the first position, the limiting structure 31 is located in the first groove position 111; when in the second position, the limiting structure 31 is located in the second groove position 112 and at least partially abuts on the side wall of the second groove position 112, so as to realize the axial limiting of the outer sleeve 3 and the docking head 2.

[0040] In the initial installation, the limiting structure 31 enters along the first slot 111 extending in the axial direction, and the operator can easily put the outer sleeve 3 on the butt joint 2, so that the limiting structure 31 is aligned and slides into the first slot 111. When the outer sleeve 3 is rotated, the limiting structure 31 enters the second slot 112 extending in the circumferential direction, not only the movement of the outer sleeve 3 in the axial direction is limited by the slot side wall to achieve axial limiting, but also the radial swing of the outer sleeve 3 is restricted to a certain extent due to the cooperation of the limiting structure 31 and the second slot 112. This double limiting guarantees the stability of the connection between the outer sleeve 3 and the butt joint 2, and after the optical fiber is butt jointed, even if external forces such as vibration and pulling are encountered, the precise butt joint state can be maintained to ensure stable transmission of optical signals.

[0041] To unlock, the outer sleeve 3 must be rotated in the opposite direction to make the limiting structure 31 return from the second slot 112 to the first slot 111, and the operation has a clear directionality. In daily use, slight shaking and collision are difficult to make the limiting structure 31 accidentally disengage from the second slot 112, avoiding loose optical fiber connection caused by accidental touch and enhancing the reliability of the adapter in complex environments. In practical application, the circumferential angle of the second slot 112 is configured as 45°, that is, the worker rotates the outer sleeve 3 by forty-five degrees to complete the locking of the outer sleeve 3.

[0042] In some practical applications, referring to Figures 4 to 5 the end of the second slot 112 also has a lock slot 113 extending in the axial direction of the adapter body 1, and the limiting structure 31 is configured as a first limiting block 311 and a second limiting block 312 fixedly connected to the inner wall of the outer sleeve 3; when the limiting structure 31 moves to the second position, the plug 5 is elastically reset to push the second limiting block 312 into the lock slot 113, and the first limiting block 311 abuts against the side wall of the second slot 112.

[0043] When the limiting structure 31 moves to the second position, the first limiting block 311 abuts against the side wall of the second slot 112, and at the same time, the pushing force generated by the elastic reset of the plug 5 causes the second limiting block 312 to be embedded in the lock slot 113, achieving precise clamping in the axial direction.

[0044] Since the second limiting block 312 is embedded in the lock slot 113 under the elastic force generated by the elastic material of the plug 5, accidental shaking, collision and other situations in daily life are difficult to make the limiting structure 31 disengage from the locked state, effectively avoiding accidental loosening of the optical fiber connection caused by accidental touch. When unlocking, the elastic resistance of the plug 5 needs to be overcome to make the second limiting block 312 disengage from the lock slot 113, and then the outer sleeve 3 is rotated to make the limiting structure 31 return to the first position. This orderly unlocking step not only ensures the controllability of the unlocking operation, but also prevents accidental unlocking due to misoperation. Therefore, in this embodiment, the sealing protection function of the plug 5 and the limiting function of the locking structure are ingeniously combined.

[0045] It should be noted that the first limiting block 311 and the second limiting block 312 can be provided with an observation hole 33 communicating with the outside of the outer sleeve 3, so that the staff can observe the connection state of the limiting structure 31 and the limiting groove 11 through the observation hole 33.

[0046] In some practical applications, the plug 5 is integrally formed with a tail sleeve 52 for protecting the connection between the optical cable and the adapter structure.

[0047] In some practical applications, as shown in Figures 3 to 4 , the outer wall of the inner sleeve 4 is provided with a first annular protrusion 41 coaxial with the inner sleeve 4, and the outer wall of the adapter head 2 is provided with a second annular protrusion 23 coaxial with the adapter head 2. The inner sleeve 4 is slidably inserted into the adapter head 2 to push the second annular protrusion 23 against the first limiting wall 12 in the adapter body 1, and the first annular protrusion 41 is against the end of the adapter body 1 to achieve axial limiting of the inner sleeve 4.

[0048] The first annular protrusion 41 of the outer wall of the inner sleeve 4 and the second annular protrusion 23 of the outer wall of the adapter head 2 cooperate with each other. During assembly, the inner sleeve 4 is slidably inserted into the adapter head 2, so that the second annular protrusion 23 is against the first limiting wall 12 in the adapter body 1, and the first annular protrusion 41 is against the end of the adapter body 1. This double limiting ensures that the inner sleeve 4 is in a precise axial position in the adapter body 1, avoiding axial movement. After the inner sleeve 4 is stably positioned, a tight and stable connection is formed between the inner sleeve 4, the adapter body 1 and the adapter head 2. When external forces such as vibration and pulling are applied to the adapter, each component is precisely positioned and can bear force uniformly, avoiding damage to the key connection 22 due to uneven local stress.

[0049] In some practical applications, as shown in Figure 3 and Figure 8 , the connection between the plug 5 and the inner sleeve 4 is optimized. Specifically, the outer peripheral wall of the plug 5 is designed as a tapered surface 53, and the end of the inner sleeve 4 is provided with a tapered groove 42 matching the shape of the plug 5. The plug 5 is embedded in the tapered groove 42 and abuts against the second limiting wall 43 at the end of the tapered groove 42 to achieve axial limiting of the plug 5. The outer peripheral wall of the plug 5 is designed as a tapered surface 53 matching the shape of the tapered groove 42 at the end of the inner sleeve 4. During installation, the plug 5 is slowly embedded along the tapered groove 42. This tapered structure has the feature of automatic centering, which can guide the plug 5 to move precisely towards the predetermined axial position until it abuts against the second limiting wall 43 at the end of the tapered groove 42, thereby precisely limiting the axial position of the plug 5.

[0050] In other practical applications, as shown in Figure 2 and Figure 7As shown, the connection between the inner sleeve 4 and the adapter body 1 is also provided with an annular groove 44 to install a sealing ring therein to enhance the sealing between the two. In addition, the end of the adapter body 1 away from the inner sleeve is provided as an externally threaded end. In the optical fiber wiring system, many matching devices, fixtures or extension components are provided with internally threaded interfaces. With the externally threaded end, the adapter can be directly screwed in, without the need of additional complex adapter fittings or glue, buckles and other connection means, and can be quickly assembled by hand.

[0051] Furthermore, in order to consider the circumferential limit between the inner sleeve 4 and the adapter body 1, in actual application, referring to Figure 7 As shown, at least one insertion block 45 can be added to the outer wall of the inner sleeve 4, and the adapter body 1 is provided with an insertion slot 13 to be inserted and matched with the insertion block, so as to realize the circumferential limit between the two.

[0052] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution of the present application, and any equivalent embodiment with equivalent changes and modifications is still within the scope of the present application.

Claims

1. An SC quick plug adapter structure, characterized by, The application relates to an optical fiber adapter, which comprises the following parts: an adapter body (1) which is internally hollow and open at both ends, and one end of the adapter body (1) is provided with a limiting groove (11); a butt joint (2) which is internally provided with a channel (21) for optical fiber penetration, and both end portions of the butt joint (2) are provided with connecting portions (22) for clamping optical fiber joints, and the butt joint (2) is coaxially arranged in the adapter body (1); an outer sleeve (3) which is provided with a limiting structure (31) at one end portion, and the limiting structure (31) can rotate between a first position and a second position in the limiting groove (11); when the limiting structure (31) is at the first position, the outer sleeve (3) is sleeved on the butt joint (2) and the limiting structure (31) enters the limiting groove (11); when the limiting structure (31) is at the second position, the limiting structure (31) is locked with the limiting groove (11), so that the outer sleeve (3) and the butt joint (2) are axially limited.

2. The SC quick plug adapter structure of claim 1, wherein, The adapter structure further comprises an inner sleeve (4) and a plug (5); the inner sleeve (4) is coaxially arranged in the outer sleeve (3) and at least partially abuts against the adapter body (1), the plug (5) is tightly inserted into one end of the inner sleeve (4) away from the adapter body (1), the plug (5) is internally provided with a through hole (51) for optical fiber penetration; a first limiting portion (32) on the outer sleeve (3) abuts against the plug (5) to force the plug (5) to be axially limited between the inner sleeve (4) and the first limiting portion (32).

3. The SC fast plug-in adapter structure of claim 2, wherein, The plug (5) is made of rubber or silica gel.

4. The SC quick plug adapter structure of claim 3, wherein, The limiting groove (11) comprises a first groove (111) which extends axially at the end portion of the adapter body (1), and a second groove (112) which extends along the circumferential direction of the adapter body (1) at the end of the first groove (111); when the limiting structure (31) is at the first position, the limiting structure (31) is located in the first groove (111); when the limiting structure (31) is at the second position, the limiting structure (31) is located in the second groove (112) and at least partially abuts against the side wall of the second groove (112), so that the outer sleeve (3) and the butt joint (2) are axially limited.

5. The SC quick plug adapter structure of claim 3, wherein, The circumferential angle of the second groove (112) is 45 degrees.

6. The SC quick plug adapter structure of claim 4, wherein, The end of the second groove (112) is further provided with a locking groove (113) which extends axially along the adapter body (1), and the limiting structure (31) is provided with a first limiting block (311) and a second limiting block (312) which are fixedly connected to the inner wall of the outer sleeve (3); when the limiting structure (31) moves to the second position, the plug (5) is elastically reset to push the second limiting block (312) to be embedded in the locking groove (113), and the first limiting block (311) abuts against the side wall of the second groove (112).

7. The SC quick plug adapter structure of claim 6, wherein, Observation holes (33) which are communicated with the outside of the outer sleeve (3) are arranged at the sides of the first limiting block (311) and the second limiting block (312).

8. The SC quick plug adapter structure of claim 2, wherein, The plug (5) is integrally formed with a tail sleeve (52).

9. The SC quick plug adapter structure of claim 2, wherein, The outer wall of the inner sleeve (4) is provided with a first annular protrusion (41) coaxial with the inner sleeve (4), the outer wall of the adapter (2) is provided with a second annular protrusion (23) coaxial with the adapter (2), the inner sleeve (4) is slidingly inserted into the adapter (2) to push the second annular protrusion (23) against the first limiting wall (12) on the adapter body (1), and the first annular protrusion (41) is against the end of the adapter body (1) to achieve axial positioning of the inner sleeve (4).

10. The SC quick plug adapter structure of claim 2, wherein, The outer peripheral wall of the plug (5) is provided as a tapered surface (53), the end of the inner sleeve (4) is provided with a tapered groove (42) matched with the shape of the plug (5), the plug (5) is embedded in the tapered groove (42) and is against the second limiting wall (43) at the end of the tapered groove (42) to achieve axial positioning of the plug (5).

Images