CN219496727U

CN219496727U - APC type through-tube optical fiber connector

Info

Publication number: CN219496727U
Application number: CN202320545475.3U
Authority: CN
Inventors: 刘光清; 耿玲; 欧阳克
Original assignee: Nanjing Huamai Technology Co Ltd
Current assignee: Nanjing Huamai Technology Co Ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-08-08
Anticipated expiration: 2033-03-20

Abstract

The utility model discloses an APC type through-tube optical fiber connector, and relates to the technical field of optical communication rimless devices. The utility model comprises a connector body, a dustproof cap and an inner straight sleeve which is used for being connected with an SC connector shell; the inner straight sleeve is detachably sleeved on the tail handle from one end of the connector body, which is provided with the ceramic ferrule; the outer surface of the tail handle is provided with a slot, and the inner surface of the inner straight sleeve is provided with a boss matched with the slot; the dustproof cap is detachably sleeved on the spring seat from one end of the connector body provided with the ceramic ferrule, and a fixed block is arranged on the outer surface of the spring seat; the dustproof cap is made of elastic materials, and is provided with a positioning hole matched with the fixing block. The APC type through-tube optical fiber connector provided by the utility model is convenient for controlling the relative angle between the ceramic ferrule and the inner straight sleeve, and the dustproof cap and the ceramic ferrule are firmly connected and are not easy to fall off, so that the ceramic ferrule can be better protected.

Description

APC type through-tube optical fiber connector

Technical Field

The utility model relates to the technical field of optical communication rimless devices, in particular to an APC type tube-penetrating optical fiber connector.

Background

The optical fiber connector is the most widely used device in the optical communication system, and can be classified into SC, FC, LC and the like according to the appearance structure, and can be classified into PC, UPC and APC according to the grinding angle of the end face of the ferrule, and with the improvement of the grinding technology level, the UPC gradually replaces the PC, and the performance is more excellent, and the cost is consistent.

With the continuous change of the application scene of the optical network, the requirements on the optical fiber connector become more and more different. For example, multi-channel connectors MPO, MTP are present; and a miniaturized connector CS, SN, MDC, etc. However, when the existing APC optical fiber connector is constructed on site, the inner straight sleeve is connected with the tail handle in a 180-degree diagonal installation mode, the front and the back of the inner straight sleeve are not easy to distinguish, the relative angle between the inner straight sleeve and the ceramic ferrule is not easy to guarantee, the dust cap is made of a rigid material, the dust cap is easy to fall off, and the ferrule cannot be protected.

Disclosure of Invention

In order to solve the problems that the existing APC optical fiber connector is difficult to control the relative angle between the inner straight sleeve and the ceramic ferrule and the dust cover is easy to fall off, the utility model provides the APC type tubular optical fiber connector which is convenient to control the relative angle between the ceramic ferrule and the inner straight sleeve, and the dust cover is firmly connected with the ceramic ferrule, is difficult to fall off and can better protect the ceramic ferrule.

The utility model provides the following technical scheme:

an APC type through-tube optical fiber connector comprises a connector body, a dust cap and an inner straight sleeve which is used for being connected with an SC connector shell;

the connector body comprises a ceramic ferrule and a tail handle; after the ceramic ferrule is pressed into the tail handle, a spring seat, a compression ring and a tail sleeve are sequentially and detachably sleeved; the optical cable is inserted into the tail handle and the ceramic ferrule from the outer end of the tail sleeve;

the inner straight sleeve is detachably sleeved on the tail handle from one end of the connector body, which is provided with the ceramic ferrule; the outer surface of the tail handle is provided with a slot, and the inner surface of the inner straight sleeve is provided with a boss matched with the slot;

the dustproof cap is detachably sleeved on the spring seat from one end of the connector body provided with the ceramic ferrule, and a fixed block is arranged on the outer surface of the spring seat; the dustproof cap is made of elastic materials, and is provided with a positioning hole matched with the fixing block.

Preferably, the connector further comprises a woven mesh sleeve for assisting the connector body in penetrating the pipe, wherein the woven mesh sleeve is made of PET (polyethylene terephthalate) materials, and when the pipe is penetrated, the woven mesh sleeve is wrapped outside the connector body and the dust cap so as to better complete pipe penetrating operation.

Preferably, the number of the fixing blocks is two, and the fixing blocks are symmetrically arranged on the outer surface of the spring seat, so that the dust cap is connected with the spring seat more stably.

The utility model has the beneficial effects that: according to the utility model, the slots are matched with the bosses, so that the alignment angle does not need to be additionally spent on the installation of the inner straight sleeve, and the accuracy of the relative angle between the ceramic ferrule and the inner straight sleeve can be ensured as long as the bosses can be inserted into the slots; in addition, the dustproof cap made of elastic materials is arranged and matched with the fixed block on the spring seat through the positioning hole, so that the connection between the dustproof cap and the spring seat is more stable and is not easy to fall off, and the ceramic lock pin can be better protected.

Drawings

FIG. 1 is a schematic view of the structure of the connector of the present utility model;

FIG. 2 is a schematic illustration of the connection of a ferrule and a shank according to the present utility model;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a schematic view of the structure of the dust cap of the present utility model;

FIG. 5 is a schematic view of the structure of the inner straight sleeve of the present utility model;

fig. 6 is a schematic view of the structure of the boss of the present utility model.

In the figure: 1. a ceramic ferrule; 2. a tail handle; 2-1, a slot; 3. a spring; 4. a spring seat; 4-1, fixing blocks; 5. a compression ring; 6. an optical cable; 7. a tail sleeve; 8. a dust cap; 8-1, positioning holes; 9. an inner straight sleeve; 9-1, boss.

Detailed Description

An APC type through-tube optical fiber connector comprises a connector body, a dust cap 8, an inner straight sleeve 9 used for being connected with an SC connector shell, and a woven mesh sleeve used for assisting the connector body to pass through a tube.

As shown in fig. 1, the connector body includes a ferrule 1 and a tail shank 2; after the ceramic ferrule 1 is pressed into the tail handle 2, a spring 3, a spring seat 4, a compression ring 5 and a tail sleeve 7 are detachably sleeved in sequence; the optical cable 6 is inserted into the tail handle 2 and the ceramic ferrule 1 from the outer end of the tail sleeve 7; the optical cable 6 is preferably a round cable with a diameter of 3.5mm, and the outer jacket material is LSZH or TPU.

The inner straight sleeve 9 is detachably sleeved on the tail handle 2 from one end of the connector body provided with the ceramic ferrule 1; as shown in fig. 2 and 3, the outer surface of the tail handle 2 is provided with a slot 2-1, and as shown in fig. 5, the inner surface of the inner straight sleeve 9 is provided with a boss 9-1 matched with the slot 2-1; when the inner straight sleeve 9 is installed, the installation angle of the inner straight sleeve 9 can be determined by matching the boss 9-1 with the slot 2-1, so that the accuracy of the relative angle between the APC ceramic ferrule 1 and the inner straight sleeve 9 can be ensured.

The dustproof cap 8 is detachably sleeved on the spring seat 4 from one end of the connector body provided with the ceramic ferrule 1, the outer surface of the spring seat 4 is provided with two fixed blocks 4-1, and the two fixed blocks 4-1 are symmetrically arranged on the outer surface of the spring seat 4; the dust cap 8 is made of elastic material, preferably PET material; as shown in fig. 4, the dust cap 8 is provided with a positioning hole 8-1 matched with the fixed block 4-1; through setting up dust cap 8 to PET elastic material to cooperate with locating hole 8-1 through fixed block 4-1, make dust cap 8 and spring holder 4 be connected more stably, be difficult for droing, thereby play the effect of protecting ceramic lock pin 1 better.

The woven mesh sleeve adopts a PET woven mesh sleeve with the diameter of 4mm and the wire diameter of 0.03mm, and is common in the prior art, and the length of the woven mesh sleeve is more than 80cm; when the pipe is penetrated, the woven mesh sleeve is wrapped outside the connector body and the dust cap 8 so as to better complete pipe penetrating operation.

The working principle of the utility model is as follows:

when the connector body is assembled, firstly, the APC ceramic ferrule 1 with the diameter of 2.5mm is pressed into the tail handle 2 for standby; then, cutting the optical cable 6 according to the required length, penetrating the optical cable 6 into the tail sleeve 7, the compression ring 5, the spring seat 4 and the spring 3 in sequence after cutting, and then injecting a certain amount of thermosetting glue into the tail handle 2 by using a needle cylinder; the front section of the optical cable 6 is stripped by using a three-port fiber stripping pliers, an outer sheath with the thickness of 0.9mm and a coating layer with the thickness of 250mm are stripped, aramid fibers are exposed, and then two sides of the outer sheath are sheared for a certain distance and penetrate into a ceramic ferrule 1 with a tail handle 2; then the inner straight sleeve 9 correspondingly passes through the ceramic ferrule 1 and is arranged on the spring seat 4 of the connector body 1, and finally the compression ring 5 is used for pressing all the aramid fiber and the outer sheath onto the tail handle 2.

After the crimping is finished, the tail sleeve 7 is taken down, the semi-finished product is put into a hot oven for baking for 18 minutes at 120 ℃, after the crimping is finished, the tail sleeve 7 is penetrated onto the tail handle 6, and the inner straight sleeve 9 is sleeved with a green shell of an SC connector common in the prior art; after the assembly is completed, the end face of the ceramic ferrule 1 is ground into an APC angle by using a conventional connector grinding process, the 3D geometry of the end face and the cleanliness of the end face are ensured, and then the insertion loss index is tested. Thus, the entire assembly process of the APC fiber connector body is completed.

After the APC optical fiber connector body is assembled, the green shell and the inner straight sleeve 9 of the SC connector are disassembled, and then the dustproof cap 8 is sleeved on the spring seat 4 from the end of the ceramic ferrule 1, so that the two fixing blocks 4-1 on the spring seat 4 are sleeved in the positioning holes 8-1, and the fixing of the dustproof cap 8 is completed.

When the engineering construction needs to pass through the pipe of the APC optical fiber connector, the one end of the woven mesh sleeve is folded and fixed by using the binding belt, the connector body assembled with the dustproof cap 8 is penetrated into the woven mesh sleeve from the other end of the woven mesh sleeve, the penetrating length is more than or equal to 60cm, and finally the pipe is passed through by using an engineering construction tool, so that the passing operation of the APC optical fiber connector can be completed; after the pipe penetrating is completed, the woven mesh sleeve and the dustproof cap 8 are taken down, and the inner straight sleeve 8 and the green shell of the SC connector are assembled again, so that the pipe penetrating device can be connected with main equipment. Compared with the prior art, the pipe penetrating method only reserves the bare core penetrating pipe of the ceramic ferrule 1 when the optical fiber connector penetrates the pipe, so that the size of the connector is smaller, and meanwhile, the pipe penetrating of the connector is more convenient and quick by means of the woven mesh sleeve, and the pipe penetrating method can be suitable for occasions of small-space wiring pipelines.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An APC type tube-through optical fiber connector, characterized in that: comprises a connector body, a dustproof cap (8) and an inner straight sleeve (9) which is used for being connected with an SC connector shell;

the connector body comprises a ceramic ferrule (1) and a tail handle (2); after the ceramic ferrule (1) is pressed into the tail handle (2), a spring (3), a spring seat (4), a compression ring (5) and a tail sleeve (7) are detachably sleeved in sequence; the optical cable (6) is inserted into the tail handle (2) and the ceramic ferrule (1) from the outer end of the tail sleeve (7);

the inner straight sleeve (9) is detachably sleeved on the tail handle (2) from one end of the connector body, which is provided with the ceramic ferrule (1); the outer surface of the tail handle (2) is provided with a slot (2-1), and the inner surface of the inner straight sleeve (9) is provided with a boss (9-1) matched with the slot (2-1);

the dustproof cap (8) is detachably sleeved on the spring seat (4) from one end of the connector body, which is provided with the ceramic ferrule (1), and a fixed block (4-1) is arranged on the outer surface of the spring seat (4); the dustproof cap (8) is made of elastic materials, and the dustproof cap (8) is provided with a positioning hole (8-1) which is matched with the fixed block (4-1).

2. The APC type tube penetrating fiber optic connector of claim 1, wherein: the novel connector is characterized by further comprising a woven mesh sleeve for assisting the connector body to penetrate through the pipe, wherein the woven mesh sleeve is made of PET (polyethylene terephthalate) materials, and when the pipe penetrates through the pipe, the woven mesh sleeve is wrapped outside the connector body and the dustproof cap.

3. The APC type through-tube optical fiber connector according to claim 1 or 2, wherein: the number of the fixing blocks (4-1) is two, and the two fixing blocks are symmetrically arranged on the outer surface of the spring seat (4).