CN204256222U - A kind of optical fiber quick connector - Google Patents

Abstract

The utility model discloses an optical fiber fast connector, which comprises an SC shell, a ferrule tailstock sleeve, a fiber core guiding and positioning device and a pressing device; the ferrule tailstock sleeve includes a sleeve and is arranged at one end of the sleeve. The tailstock of the tailstock, the upper surface of the sleeve is provided with a pre-tightening buckle slot, and the two sides of the tailstock are symmetrically provided with card holes; the core guiding and positioning device includes a hollow orienting body and a The ferrule is provided with a spring on the outer side of the hollow directional body; thus the spring is sleeved on the outer side of the hollow directional body, and the whole is installed inside the ferrule tailstock sleeve, and then the pressing device is connected to the tailstock connection, so as to connect it with the SC shell as a whole; the pressing device includes a crimping seat and a crimping upper cover arranged on the upper side of the crimping seat. The utility model has a simple and compact structure, adds a device for fixing the loose tube unit and the reinforcement, overcomes the problem of connection between the circular loose tube and the pre-embedded quick connector, and reduces construction and maintenance costs, disassembly and assembly. convenient.

Description

A kind of optical fiber fast connector

technical field

The utility model relates to the technical field of optical fiber connectors, in particular to a fast optical fiber connector.

Background technique

With the increase of optical fiber applications, optical fiber quick connectors are gradually and widely used in the field of indoor optical fiber termination. There are two types of existing optical fiber quick connectors: mechanical type and thermal fusion type. Hot-melt quick connectors have high requirements on the environment, and mechanical embedded quick connectors are generally practical.

The pre-embedded optical fiber quick connectors currently available on the market can only be used for the connection of butterfly optical cables, and due to the structural difference between circular loose-tube optical cables and butterfly optical cables, conventional pre-embedded optical cables cannot be used. Fiber optic fast connectors are used for splicing, and when the prefabricated end SC connectors of the loose sleeve pigtails or jumpers are damaged, the method of replacing the entire jumper is often used, which increases the construction cost and makes the maintenance cost higher .

However, in view of the deficiencies of the existing technology, it is necessary for the developer to develop a device with a simple and compact overall structure, which adds a device for fixing the loose tube unit and the reinforcing member, and overcomes the need for the connection between the circular loose tube cable and the pre-embedded quick connector. It is an optical fiber fast connector that solves the continuous problems, reduces construction and maintenance costs, and is easy to disassemble and assemble.

Utility model content

In order to solve the problems existing in the prior art, the purpose of this utility model is to provide a simple and compact overall structure, which adds a device for fixing the loose-tube unit and the reinforcement, and overcomes the problem of circular loose-tube optical cables and pre-embedded quick connectors. The problem of connection between them reduces the cost of construction and maintenance, and the fiber optic quick connector is easy to disassemble.

In order to solve the above technical problems, the utility model is realized by adopting the following technical solutions: a quick connector for optical fiber, including SC shell, ferrule tailstock sleeve, fiber core guiding and positioning device and pressing device;

The ferrule tailstock sleeve includes a sleeve and a tailstock arranged at one end of the sleeve, the upper surface of the sleeve is provided with a pre-tightening buckle slot, and the two sides of the tailstock are symmetrically provided with clamping holes;

The fiber core guiding and positioning device includes a hollow orienting body and a ferrule arranged at one end of the hollow orienting body, and a spring is sleeved outside the hollow orienting body;

Thereby, the spring is set outside the hollow directional body, and it is installed as a whole in the ferrule tailstock sleeve, and then the pressing device is connected with the tailstock, so that it is connected with the SC shell as a whole;

The pressing device includes a crimping seat and a crimping upper cover provided on the upper side of the crimping seat;

A countersunk block matching with the tailstock is provided at one end of the crimping seat, and locking blocks matching with the clamping holes are arranged symmetrically on both sides of the countersunk block.

In a preferred embodiment of the present invention, the crimping seat includes a base and side walls symmetrically arranged on both sides of the base, and a semi-open U-shaped plastic groove for placing optical fibers is provided in the middle of the inner side of the side wall. A clamping device for clamping the optical fiber is provided between the semi-open U-shaped plastic groove and the side wall, and a clamping groove is formed between the side wall and the clamping device, and a clamping groove is formed between the clamping device and the half-open U-shaped plastic groove. A notch is formed between the plastic slots, and an aramid card slot for clamping the aramid fiber is opened at the inner end of the clamping device, and the outer surface of the side wall is symmetrically provided with a rotating shaft, and the rotating shaft is arranged near the end of the countersunk block .

In a preferred embodiment of the present utility model, the crimping upper cover includes an upper cover plate and side cover plates symmetrically arranged on both sides of the upper cover plate, the upper cover plate is flush with one end of the side cover plate, and One end is slightly longer than the upper cover plate, and an end cover plate is provided at the end of the upper cover plate and the side cover plate, and a lug is provided at the other end of the side cover plate. The rotating shaft hole, on the surface of the upper cover plate, there is a crimping upper cover cone matching with the card slot

In a preferred embodiment of the present utility model, a V-shaped notch is opened on the upper surface of the hollow orientation body.

In a preferred embodiment of the present utility model, the clamping block and the crimping seat are integrally formed.

In a preferred embodiment of the present invention, the hollow orienting body and the ferrule are integrally formed.

In a preferred embodiment of the present utility model, the rotation angle of the crimping upper cover relative to the crimping seat is 90°.

The beneficial effect of the utility model is that: compared with the prior art, the utility model is in the clamping block that cooperates with the clamping hole, but the clamping block is arranged symmetrically on both sides of the countersunk block, and the countersunk block is arranged at one end of the crimping seat, and the clamping block is arranged on both sides of the countersunk block. The socket includes a base and side walls symmetrically arranged on both sides of the base. A semi-open U-shaped plastic groove for placing optical fibers is provided in the middle of the inner side of the side wall. The optical fiber clamping device, a clamping groove is formed between the side wall and the clamping device, a notch is formed between the clamping device and the half-opened U-shaped plastic groove, and a groove is provided at the inner end of the clamping device for clamping the The aramid card slot is made of rayon, and the outer surface of the side wall is symmetrically provided with a rotating shaft, and the rotating shaft is arranged near one end of the countersunk block.

Then insert the processed bare optical fiber from the fiber core guide and positioning device, thereby pressing down the pre-tightening buckle; at the same time, place the outer sheath of the optical cable on the semi-open U-shaped plastic groove, and pull the aramid fiber through the aramid fiber groove. into the slot, press down the crimping cover so that the conical body of the crimping cover on the top cover matches the slot formed by the side wall and the clamping device, and then press the conical surface of the crimping cover Under the force, the clamping device is forced to move relatively, and then the notch formed by the clamping device and the half-opened U-shaped plastic groove is gradually narrowed, thereby clamping the outer sheath of the loose sleeve optical cable, and at the same time making the half-opened U-shaped plastic groove press The outer sheath of the optical cable is tightened and loosened, which facilitates the operation and reduces the cost of construction and maintenance.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the explosion structure of the present invention.

Fig. 2 is a schematic diagram of the assembly structure of the present invention.

Fig. 3 is a structural schematic diagram of the ferrule tailstock sleeve in the utility model.

Fig. 4 is a schematic structural view of the fiber core guiding and positioning device of the present invention.

Fig. 5 is a structural schematic diagram of the pressing device in the present invention.

Fig. 6 is a structural schematic diagram of the crimping seat in the present invention.

Fig. 7 is a front view of Fig. 6 .

Fig. 8 is a structural schematic diagram of the crimping upper cover in the utility model.

The corresponding part names indicated by numbers and letters in the figure:

1. SC shell 2. Ferrule tailstock sleeve 3. Fiber core guide positioning device 4. Spring 5. Compression device 201. Sleeve 202. Tailstock 301. Hollow orientation body 302. Ferrule 501. Countersunk block 502. Crimping upper cover 503. Crimping seat 2011. Pre-tightening buckle slot 2021. Clamping hole 3021. V-shaped notch 5011. Clamping block 5021. Upper cover plate 5022. Crimping upper cover cone 5023. End cover plate 5024 .Side cover 5025. Shaft hole 5026. Lug 5031. Shaft 5032. Side wall 5033. Clamping device 5034. Semi-open U-shaped plastic groove 5035. Notch 5036. Card slot 5037. Base 5038. Aramid card slot

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

Referring to Figures 1 and 2, the utility model is a quick connector for optical fiber, including an SC housing 1, a ferrule tailstock sleeve 2, a fiber core guiding and positioning device 3 and a pressing device 5, but the SC housing 1 is Hollow shell, install the fiber core guide and positioning device 3 inside the ferrule tailstock sleeve 2, and then install the pressing device 5 on the left end of the ferrule tailstock sleeve 2, so as to connect it with the SC shell 1 as a whole.

Referring to Fig. 3, the ferrule tailstock sleeve 2 includes a sleeve 201 and a tailstock 202 arranged at one end of the sleeve 201, the upper surface of the sleeve 201 is provided with a pre-tightening buckle slot 2011, the pre-tightening buckle slot 2011 is rectangular as a whole, and there are locking holes 2021 symmetrically opened on both sides of the tailstock 202, and the shape of the locking holes 2021 can be set according to actual conditions.

Referring to Fig. 4, the fiber core guiding and positioning device 3 includes a hollow orienting body 302 and a ferrule 301 arranged at one end of the hollow orienting body 302, but a V-shaped notch 3021 is provided on the upper surface of the hollow orienting body 302, and a V-shaped notch 3021 is provided on the hollow orienting body. The outside of 302 is covered with a spring 4, so that the spring sleeve 4 is arranged on the outside of the hollow directional body 302, and it is integrally installed inside the ferrule tailstock sleeve 2, and then the pressing device 5 is connected to the ferrule tailstock sleeve 2 The tailstock 202 in it is connected, so that it is connected with the SC shell 1 as a whole.

5, the pressing device 5 includes a crimping seat 503 and a crimping upper cover 502 covered on the upper side of the crimping seat 503, and the crimping upper cover 502 can rotate relative to the crimping seat 503, but the rotation The angle is within 90°;

Referring to Figure 6, one end of the crimping seat 503 is provided with a countersunk block 501 that matches the tailstock 202 in the ferrule tailstock sleeve 2, and on both sides of the countersunk block 501, there are symmetrically provided snaps that match the snap holes 2021. Block 5011, and then use the clamping hole 2021 and the clamping block 5011 to form a buckle device, so that the pressing device 5 is firmly clamped on the tailstock 202 of the ferrule tailstock sleeve 2, and the connector is improved. connection stability.

Referring to Figure 7, the crimping seat 503 includes a base 5037 and side walls 5032 symmetrically arranged on both sides of the base 5037, and the length of the base 5037 is slightly longer than the length of the side walls 5032, and in the middle of the side wall 5032 there is a The semi-open U-shaped plastic groove 5034 is provided with a clamping device 5033 for clamping the optical fiber between the semi-opened U-shaped plastic groove 5034 and the side wall 5032, and a clamping groove 5036 is formed between the side wall 5032 and the clamping device 5033 A notch 5035 is formed between the clamping device 5033 and the semi-open U-shaped plastic groove 5034, and an aramid fiber clamping groove 5038 for clamping the aramid fiber is opened at the inner end of the clamping device 5033, and the outer surface of the side wall 5032 is symmetrical A rotating shaft 5031 is provided, and the rotating shaft 5031 is arranged near one end of the countersunk block 501 .

Referring to Figure 8, the crimping upper cover 502 includes an upper cover 5021 and side covers 5024 symmetrically arranged on both sides of the upper cover 5021, and between the inner surfaces of the side covers 5024 symmetrically arranged on both sides of the upper cover 5021 The distance between them is the same as the distance between the outer surfaces of the side walls 5032 symmetrically arranged on both sides of the base 5037, thereby improving the matching accuracy between the crimping upper cover 502 and the crimping seat 503.

The upper cover 5021 is flush with one end of the side cover 5024, and the length of the other end is slightly longer than the length of the upper cover 5021. An end cover 5023 is arranged at the end of the upper cover 5021 flush with the side cover 5024, but the end cover 5023 The thickness is the same as the base 5037 is longer than the length of the side plate 5032. A lug 5026 is provided at the other end of the side cover plate 5024, and a shaft hole 5025 matching the shaft 5031 is opened in the center of the lug 5026, so as to ensure that the upper cover 502 is crimped around It makes a rotary motion and ensures that the selected angle is within 90°.

On the surface of the upper cover plate 5021, there is a crimping upper cover cone 5022 matched with the card slot 5036, and when the crimping upper cover 502 is rotated and pressed down around the rotating shaft 5031, the crimping upper cover 502 arranged on the lower surface of the upper cover plate 5021 is pressed down. The crimping upper cover cone 5022 cooperates with the clamping groove 5036 formed by the side wall 5032 and the clamping device 5033, and then the clamping device 5033 forces the clamping device 5033 to move relatively under the force of the crimping upper cover cone 5022, Further, the notch 5035 formed by the clamping device 5033 and the semi-open U-shaped plastic groove 5034 is gradually narrowed, so as to tighten the outer sheath of the loose optical cable placed in the semi-open U-shaped plastic groove 5034 .

In this embodiment, the countersunk block 501 and the crimping seat 503 and the hollow orientation body 302 and the ferrule 301 are integrally formed, thereby improving the overall stability and mechanical strength of the connector.

To sum up, the utility model is a clamping block that cooperates with the clamping hole. However, the clamping block is arranged symmetrically on both sides of the countersunk block, and the countersunk block is arranged on one end of the crimping seat. The crimping seat includes a base and is symmetrically arranged on both sides of the base. The side wall of the side wall is provided with a semi-open U-shaped plastic groove for placing optical fibers in the middle of the inner side of the side wall, and a clamping device for clamping optical fibers is provided between the semi-open U-shaped plastic groove and the side wall. A card slot is formed between the devices, a notch is formed between the clamping device and the half-open U-shaped plastic groove, and an aramid card slot for clamping the aramid fiber is opened at the inner end of the clamping device, and the outer surface of the side wall A rotating shaft is arranged symmetrically, and the rotating shaft is arranged near one end of the countersunk block.

Then insert the processed bare optical fiber from the fiber core guide and positioning device, thereby pressing down the pre-tightening buckle; at the same time, place the outer sheath of the optical cable on the semi-open U-shaped plastic groove, and pull the aramid fiber through the aramid fiber groove. into the slot, press down the crimping cover so that the conical body of the crimping cover on the top cover matches the slot formed by the side wall and the clamping device, and then press the conical surface of the crimping cover Under the force, the clamping device is forced to move relatively, and then the notch formed by the clamping device and the half-opened U-shaped plastic groove is gradually narrowed, thereby clamping the outer sheath of the loose sleeve optical cable, and at the same time making the half-opened U-shaped plastic groove press The outer sheath of the optical cable is tightened and loosened, which facilitates the operation and reduces the cost of construction and maintenance.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. The utility model does not depart from the spirit and scope of the utility model There will also be various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (7)

1. an optical fiber quick connector, comprises the guide locating device provided and hold down gag of SC shell, lock pin barrel of tail stock, fibre core;

Described lock pin barrel of tail stock comprises sleeve and is arranged on the tailstock of sleeve one end, and described sleeve top surface offers pretension buckle draw-in groove, offers hole clipping in described tailstock symmetria bilateralis;

The guide locating device provided lock pin comprising the directed body of hollow and be arranged on the directed body one end of hollow of described fibre core, is arranged with spring in the directed external side of described hollow;

Thus spring housing is located at the directed external side of hollow, and its integral installation is inner to lock pin barrel of tail stock, then hold down gag is connected with tailstock, thus its entirety is connected with SC shell;

It is characterized in that, described hold down gag comprises crimping seat and covers the crimping upper cover be located on the upside of crimping seat;

Described crimping seat one end is provided with the block of immersing oneself in matched with tailstock, is provided with in described block symmetria bilateralis of immersing oneself in the fixture block matched with hole clipping.

2. a kind of optical fiber quick connector according to claim 1, it is characterized in that: described crimping seat comprises base and is symmetricly set on the sidewall of base both sides, the U-shaped plastic channel of half opening for placing optical fiber is provided with in the middle part of described inside sidewalls, the gripping mechanism for clamping optical fiber is provided with between the U-shaped plastic channel of described half opening and sidewall, a draw-in groove is formed between described sidewall and gripping mechanism, a notch is formed between described gripping mechanism and the U-shaped plastic channel of half opening, the aramid fiber draw-in groove for blocking aramid fiber is offered at the inner place of described gripping mechanism, described wall outer surface is arranged with rotating shaft, described rotating shaft is near immersing oneself in the setting of block one end.

3. a kind of optical fiber quick connector according to claim 1, it is characterized in that: described crimping upper cover comprises upper cover plate and is symmetricly set on the side cover plate of upper cover plate both sides, described upper cover plate is mutually concordant with side cover plate one end, the other end is slightly longer than upper cover plate, end casing is provided with at upper cover plate end concordant with side cover plate, lug is provided with at the described side cover plate other end, offer at described lug center the shaft hole matched with rotating shaft, be provided with the crimping upper cover conical surface body matched with draw-in groove at described upper cover plate on the surface.

4. a kind of optical fiber quick connector according to claim 1, is characterized in that: the directed body upper surface of described hollow offers V-type notch.

5. a kind of optical fiber quick connector according to claim 1, is characterized in that: described in immerse oneself in block and crimping seat and be formed in one.

6. a kind of optical fiber quick connector according to claim 1 or 4, is characterized in that: the directed body of described hollow and lock pin are formed in one.

7. a kind of optical fiber quick connector according to claim 1, is characterized in that: the described crimping upper cover opposing crimp seat anglec of rotation is 90 °.