Insertion core protection structure and optical fiber connector

Abstract

The utility model discloses an insertion core protection structure, comprising a rear protection sleeve which is used for sleeving the outer side of an insertion core of a connector body, and the front end of the rear protection sleeve is provided with a segment-shaped clamping part; and the front protective sleeve is detachably connected with the rear protective sleeve, the rear end of the front protective sleeve is provided with a bayonet part corresponding to the clamping part, the front end of the front protective sleeve is provided with a rope penetrating opening used for penetrating a traction rope, and the bayonet part is matched with the clamping part to enable the front protective sleeve to be rotatably connected with the rear protective sleeve. According to the utility model, the front protective sleeve can freely rotate along the circumferential direction relative to the rear protective sleeve, so that the insertion core can be protected and the pulling rope can be rotated and adjusted in the pipe penetrating process, and the optical cable cannot be longitudinally rotated and distorted in the pipeline to affect data transmission. In addition, the segment-shaped clamping part is provided with a flat bottom surface, so that the traction force of the front protective sleeve to the rear protective sleeve and the connector main body connected with the rear protective sleeve can be increased when the insertion core protection structure is in pipe penetrating construction.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication technical field especially, relate to a plug core protection structure and optical fiber connector. BACKGROUND

[0002] The optical fiber connector is a kind of connecting component commonly used in optical fiber communication, is used to connect optical fiber cable, realizes the transmission of optical signal, it has own standard structure and size under normal circumstances.In some wiring scenes, especially when involving duct wiring, various cables and connectors need to be passed through the duct.If the volume of optical fiber connector is too large, it will face the difficulty of passing through the duct, and the plug core of optical fiber connector is also easy to be damaged.

[0003] Chinese utility model patent 2023218565576 discloses a small connector and connector assembly, the connector assembly includes traction cap, the traction cap is provided with pipe-pulling ring structure, traction cap is sleeved on the outside of ceramic plug core, and the traction cap is fixed with metal tail handle.This kind of connector equipped with traction cap can reach installation position through duct by air blowing and pulling construction mode, then replace connector normal loose parts (connector front frame sleeve and rear frame sleeve) to install and use.

[0004] Traction rope is arranged in traction cap fixedly connected with connector body, but, due to the limitation of pipe-pulling ring device during construction, traction rope cannot rotate freely, so that optical cable is twisted in the duct, thereby affecting data transmission. UTILITY MODEL CONTENTS

[0005] The first technical problem to be solved by the utility model is to provide a plug core protection structure enabling traction rope to rotate freely.

[0006] The second technical problem to be solved by the utility model is to provide an optical fiber connector applying the above plug core protection structure.

[0007] The technical scheme adopted by the utility model for solving the first technical problem is as follows:

[0008] The rear protection sleeve is used for sleeving on the outside of the plug core of the connector body, and the front end has ball-shaped clamping portion;

[0009] The front protection sleeve is detachably connected with the rear protection sleeve, and the rear end has the bayonet portion corresponding to the clamping portion, and the front end of the front protection sleeve has the rope passing port for passing the traction rope, and the bayonet portion and the clamping portion are matched to rotatably connect the front protection sleeve with the rear protection sleeve.

[0010] To facilitate the clamping part of the rear protective sleeve to be clamped into the clamping opening part of the front protective sleeve, preferably, the front protective sleeve comprises a first sleeve body and a second sleeve body which are divided along a longitudinal section, the first sleeve body and the second sleeve body are detachably connected, and the clamping opening part is also divided into two parts along the section, and when the first sleeve body and the second sleeve body are assembled, the two-part clamping opening part is combined into a complete clamping opening part.

[0011] To facilitate the installation and positioning of the first sleeve body and the second sleeve body, preferably, the section of the first sleeve body and the second sleeve body is respectively provided with a positioning clamping point and a positioning clamping groove corresponding to each other.

[0012] To realize the detachable connection of the first sleeve body and the second sleeve body, specifically, the first sleeve body is provided with a V-shaped elastic clamping strip, and the second sleeve body has a corresponding clamping through hole.

[0013] To realize the detachable connection of the plug core protection structure and the connector body, specifically, the inner wall of the rear protective sleeve is provided with an internal thread which is threadedly connected with the connector body.

[0014] The utility model solves the second technical problem and adopts the scheme of a kind of optical fiber connector, which is characterized by applying the plug core protection structure of any one of the above.

[0015] Further, the optical fiber connector further includes a connector body, a front frame sleeve and a rear frame sleeve, the front frame sleeve is sleeved outside the connector body, and the rear frame sleeve is sleeved outside the front frame sleeve. When the connector body passes through the pipeline, the operator disassembles the plug core protection structure, and replaces the front frame sleeve and the rear frame sleeve outside the connector body.

[0016] Specifically, the peripheral wall of the front frame sleeve is provided with a clamping groove, and the outer wall of the rear frame sleeve is provided with a clamping point matched with the clamping groove.

[0017] Further, the connector body includes a stop ring, and the outer wall of the stop ring is provided with an external thread matched with the internal thread of the rear protective sleeve.

[0018] Since the stop ring is a cylindrical structure, to install more accurately, preferably, the peripheral surface of the stop ring is provided with a protruding guide strip, and the front frame sleeve is provided with a corresponding guide groove.

[0019] Compared with the prior art, the advantages of the utility model lie in: the integral traction cap is improved into the front protective sleeve and the rear protective sleeve which can be connected, the rear protective sleeve has the ball-shaped connecting part, therefore the front protective sleeve can rotate freely along the circumference relative to the rear protective sleeve, during the pipe penetrating process, the ferrule can be protected and the traction rope can be rotated and adjusted, and the optical cable will not be longitudinally rotated and distorted in the pipe, and the data transmission will not be affected. In addition, the ball-shaped connecting part has the flat bottom surface, the traction force of the front protective sleeve on the rear protective sleeve and the connector main body connected with the rear protective sleeve can be increased during the pipe penetrating construction. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the assembly schematic view of the ferrule protection structure and the connector body of the utility model embodiment;

[0021] Figure 2 It is the assembly schematic view of the front frame sleeve, the rear frame sleeve and the connector body of the utility model embodiment;

[0022] Figure 3 It is the schematic view of the ferrule protection structure of the utility model embodiment;

[0023] Figure 4 It is the structural schematic view of the front protective sleeve of the utility model embodiment;

[0024] Figure 5 It is the explosion schematic view of the front frame sleeve, the rear frame sleeve and the connector body of the utility model embodiment;

[0025] Figure 6 It is the assembly schematic view of the front frame sleeve and the stop ring of the utility model embodiment, wherein (a) is the separated state, (b) is the assembled state;

[0026] Figure 7 It is the exploded schematic view of the front frame sleeve and the rear frame sleeve of the utility model embodiment, wherein (a) is the sectional view, (b) is the structural schematic view;

[0027] Figure 8 It is Figure 1 the sectional view. DETAILED DESCRIPTION

[0028] The utility model will be further described in detail below in combination with the embodiment of the drawings.

[0029] As Figures 1 to 8 shown, it is the preferred embodiment of the ferrule protection structure and the optical fiber connector of the utility model.

[0030] The optical fiber connector in the embodiment comprises a connector body 1. When the tube is penetrated, the ferrule protection structure 2 is sleeved on the front end of the connector body 1, so that the ferrule 11 can be protected and the tube can be penetrated to the installation position by blowing and pulling construction; after the tube is penetrated, the ferrule protection structure 2 is removed, and the front frame sleeve 31 and the rear frame sleeve 32 of the connector are replaced.

[0031] The connector body 1 comprises a ferrule 11 for optical fiber butt joint, a small white tube 12 for preventing overflow of plug point glue after glue is applied, a spring 13 for providing butt joint elastic force of the ferrule 11, a stop ring 14 for controlling the retreat distance of the ferrule 11 and connecting the ferrule protection structure 2, a small nail 15 for protecting the optical fiber, a crimp ring 16 for connecting the optical cable and the connector and providing the connector pulling force, and a tail sleeve 17 for protecting the optical cable at the rear end of the connector, which can be specifically referred to Figure 5 .

[0032] The ferrule protection structure 2 comprises a rear protection sleeve 22 and a front protection sleeve 21, as shown in Figure 1 、 Figure 3 and Figure 8 . The rear protection sleeve 22 is directly sleeved outside the ferrule 11 of the connector body 1, and the inner wall thereof is provided with an inner thread for thread connection with the connector body 1, so that the rear protection sleeve 22 is detachably connected with the connector body 1. The front protection sleeve 21 and the rear protection sleeve 22 are connected by clamping, and in the embodiment, the front end of the rear protection sleeve 22 is provided with a ball-shaped clamping part 221, that is, a part of a ball is cut by a plane, the rear end of the front protection sleeve 21 is provided with a clamping port 214 matched with the clamping part 221, and the front end of the front protection sleeve 21 has a rope penetrating port 211 for penetrating a pulling rope.

[0033] In order to facilitate the clamping of the clamping part 221 of the rear protection sleeve 22 into the clamping port 214 of the front protection sleeve 21, the front protection sleeve 21 is composed of a first sleeve body 21A and a second sleeve body 21B divided along a longitudinal section, and the first sleeve body 21A and the second sleeve body 21B are detachably connected. The clamping port 214 is also divided into two parts along the section, and when the first sleeve body 21A and the second sleeve body 21B are assembled, the two parts of the clamping port 214 are combined into a complete clamping port 214, as shown in Figure 4 .

[0034] The cutting surfaces of the first set body 21A and the second set body 21B are respectively provided with corresponding positioning clamping points 215 and positioning clamping slots 216, so as to facilitate the installation and positioning of the first set body 21A and the second set body 21B. In this embodiment, the positioning clamping points 215 and the positioning clamping slots 216 are respectively provided with four, which are distributed at four corners of the cutting surface. After completing the basic positioning, the first set body 21A and the second set body 21B are clamped to complete the installation. Specifically, the first set body 21A is provided with a V-shaped elastic clamping strip 212, and the second set body 21B is provided with a corresponding clamping through hole 213. After the elastic clamping strip 212 is clamped into the clamping through hole 213, it is expanded to both sides under the elastic action, so that the first set body 21A and the second set body 21B are clamped and fixed.

[0035] After the connector body 1 passes through the pipeline, the above-mentioned plug core protection structure 2 is removed, and the front frame sleeve 31 and the rear frame sleeve 32 of the connector are replaced, as shown in Figure 2 The front frame sleeve 31 is sleeved outside the connector body 1, and the rear frame sleeve 32 is sleeved outside the front frame sleeve 31. The peripheral wall of the front frame sleeve 31 is provided with a clamping slot 312, and the outer wall of the rear frame sleeve 32 is provided with a clamping point 321 matched with the clamping slot 312, as shown in Figure 7 (a) and Figure 7 (b).

[0036] The front frame sleeve 31 is sleeved outside the stop ring 14, and the peripheral surface is provided with a protruding guide strip 141. The front frame sleeve 31 is provided with a corresponding guide slot 311, as shown in Figure 6 (a) and Figure 6 (b). After the guide strip 141 and the guide slot 311 are aligned and clamped, the stop ring 14 can be more accurately installed. In addition, the outer wall of the stop ring 14 is also provided with an outer thread matched with the inner thread of the rear protection sleeve 22.

[0037] In this embodiment, the integral traction cap is improved into a front protection sleeve 21 and a rear protection sleeve 22 which can be clamped. The rear protection sleeve 22 has a ball-shaped clamping part 221, so that the front protection sleeve 21 can rotate freely in the circumferential direction relative to the rear protection sleeve 22. During the pipe installation process, the plug core 11 can be protected, and the traction rope can be rotated and adjusted, without causing the optical cable to be longitudinally twisted and distorted in the pipeline, thereby affecting data transmission. In addition, the ball-shaped clamping part 221 has a flat bottom surface, which can increase the traction force of the front protection sleeve 21 on the rear protection sleeve 22 and the connector body connected with the rear protection sleeve 22 during the pipe installation process.

Claims

1. A ferrule protection structure characterized by, Comprising A rear protective sleeve (22) is sleeved outside the ferrule (11) of the connector body (1), and has a ball-shaped clamping portion (221) at the front end; A front protective sleeve (21) is detachably connected with the rear protective sleeve (22), has a socket portion (214) corresponding to the clamping portion (221) at the rear end, and has a rope passing port (211) for passing a pulling rope at the front end, and the socket portion (214) is rotatably connected with the rear protective sleeve (22) by cooperating with the clamping portion (221).

2. The ferrule protection structure according to claim 1, characterized by The front protective sleeve (21) comprises a first sleeve body (21A) and a second sleeve body (21B) which are divided along a longitudinal section, and the first sleeve body (21A) and the second sleeve body (21B) are detachably connected, and the socket portion (214) is also divided into two parts along the section, and the two parts of the socket portion (214) are combined into a complete socket portion (214) when the first sleeve body (21A) and the second sleeve body (21B) are assembled.

3. The ferrule protection structure of claim 2, wherein, The section of the first sleeve body (21A) and the second sleeve body (21B) is respectively provided with a positioning clamping point (215) and a positioning clamping groove (216) corresponding to each other.

4. The ferrule protection structure according to claim 3, characterized by The first sleeve body (21A) is provided with an elastic clamping strip (212) which is V-shaped and opened, and the second sleeve body (21B) has a corresponding clamping through hole (213).

5. The ferrule protection structure of claim 1, wherein An inner wall of the rear protective sleeve (22) is provided with an inner thread for screwing with the connector body (1).

6. An optical fiber connector, characterized by, The ferrule protection structure (2) has the utility of any one of claims 1-5.

7. The fiber optic connector of claim 6, wherein, Further comprising a connector body (1), a front frame sleeve (31) and a rear frame sleeve (32), the front frame sleeve (31) is sleeved outside the connector body (1), and the rear frame sleeve (32) is sleeved outside the front frame sleeve (31).

8. The fiber optic connector of claim 7, wherein, A clamping groove (312) is formed in the peripheral wall of the front frame sleeve (31), and an outer wall of the rear frame sleeve (32) is provided with a clamping point (321) matched with the clamping groove (312).

9. The fiber optic connector of claim 8, wherein, The connector body (1) comprises a stop ring (14), and an outer wall of the stop ring (14) is provided with an outer thread matched with the inner thread of the rear protective sleeve (22).

10. The fiber optic connector of claim 9, wherein, A convex guide strip (141) is arranged on the peripheral surface of the stop ring (14), and a corresponding guide groove (311) is formed in the front frame sleeve (31).

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