CN212410905U

CN212410905U - Self-centering optical fiber connector

Info

Publication number: CN212410905U
Application number: CN202021149205.3U
Authority: CN
Inventors: 鲍宪亮; 关培
Original assignee: Wuhan Chuxing Optical Fiber Application Technologies Co ltd
Current assignee: Wuhan Chuxing Optical Fiber Application Technologies Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-01-26
Anticipated expiration: 2030-06-19

Abstract

The utility model belongs to the technical field of optical fiber communication, in particular to a self-centering optical fiber connector, which comprises a ceramic ferrule and a sleeve structure, wherein the sleeve structure comprises a conical main body sleeve and an airtight optical window, the conical main body sleeve is detachably connected with the airtight optical window, a frustum is arranged in the airtight optical window, the main body sleeve is a conical main body sleeve, and the tail end of the conical main body sleeve is provided with a concave conical surface abutted against the frustum of the airtight optical window; a through hole is arranged in the conical main body sleeve, and one end of the ceramic ferrule penetrates through the through hole and abuts against the tail end of the airtight optical window. The ceramic ferrule is inserted into the conical main body sleeve, then the airtight optical window is installed, in the installation process, the frustum is gradually and completely contacted with the concave conical surface, so that the airtight optical window and the conical main body sleeve can be automatically centered, and the scheme has the advantages of simple structure and low cost.

Description

Self-centering optical fiber connector

Technical Field

The utility model belongs to the technical field of fiber communication, concretely relates to from centering formula fiber connector.

Background

Optical fiber connection techniques fall into two broad categories: one is permanent connection, often referred to as a fixed joint; another type is a detachable articulating joint, often referred to as a union, which requires the use of fiber optic connectors. In a transmission network, permanent connection is adopted for connection between optical cables, and optical fiber connectors are mainly used for realizing non-permanent fixed connection between devices, between devices and instruments, between devices and pipelines and between optical fibers in a system.

At present, there are many options for the optical fiber-to-optical fiber interface, and there are two common methods, namely space interface and Physical interface (Physical Contact-PC). Spatial interfacing means that two optical fibers are not in contact, and an FC Connector (Ferrule Connector) is used, but at a certain distance, so that light needs to pass through two interfaces during transmission: the interface of the first optical fiber with air, and the interface of the air with the second optical fiber. From fresnel diffraction, it is known that when light passes through these two interfaces, the light energy has a certain reflection loss, and thus the insertion loss and return loss of the connector are both high. The method for solving the problem is to select a matching medium to be placed between two optical fibers which are matched with each other, but an additional matching medium is added at the same time, so that the processing and material selection difficulty is increased. When the optical fiber is butted by using a physical butting method, the controllability of butting and the insertion loss can be improved by reducing the contact area of the optical fiber. However, the existing optical fiber connector has a complex structure and more assembling parts, so that the automatic centering of the optical fiber is difficult to realize.

Disclosure of Invention

The utility model aims at overcoming the problem of the unable automatic centering of fiber connector among the prior art.

Therefore, the utility model provides a self-centering optical fiber connector, including the pottery lock pin, still include the sleeve structure, the sleeve structure includes toper main part cover and airtight optical window, toper main part cover with airtight optical window can dismantle the connection, be equipped with the frustum in the airtight optical window, the main part cover is toper main part cover, toper main part cover end is equipped with the concave conical surface with the frustum butt of airtight optical window; and a through hole is formed in the conical main body sleeve, and one end of the ceramic ferrule penetrates through the through hole and abuts against the tail end of the airtight optical window.

Preferably, the sleeve structure further comprises a jaw sleeve, the main body sleeve is sleeved on the jaw sleeve, and the main body sleeve and the jaw sleeve are respectively provided with a pin hole for inserting and fixing the pin.

Preferably, the optical fiber connector further comprises a boot sleeve, and the boot sleeve is clamped with the jaw sleeve.

Preferably, the airtight optical window is embedded with a self-focusing lens, and one end of the ceramic ferrule abuts against the self-focusing lens.

Preferably, an elastic gasket is arranged between the airtight light window and the main body sleeve.

Preferably, the end face of the airtight optical window is provided with an annular groove, and the elastic gasket is filled in the annular groove.

Preferably, the tapered body sleeve is in threaded connection with the airtight light window.

The utility model has the advantages that: the utility model provides a self-centering optical fiber connector, which comprises a ceramic ferrule and a sleeve structure, wherein the sleeve structure comprises a conical main body sleeve and an airtight optical window, the conical main body sleeve is detachably connected with the airtight optical window, a frustum is arranged in the airtight optical window, the main body sleeve is a conical main body sleeve, and the tail end of the conical main body sleeve is provided with a concave conical surface abutted against the frustum of the airtight optical window; a through hole is arranged in the conical main body sleeve, and one end of the ceramic ferrule penetrates through the through hole and abuts against the tail end of the airtight optical window. The ceramic ferrule is inserted into the conical main body sleeve, then the airtight optical window is installed, in the installation process, the frustum is gradually and completely contacted with the concave conical surface, so that the airtight optical window and the conical main body sleeve can be automatically centered, and the scheme has the advantages of simple structure and low cost.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic cross-sectional view of the self-centering optical fiber connector of the present invention.

Description of reference numerals: the device comprises a conical jaw sleeve 1, a conical main body sleeve 2, an airtight optical window 3, a pin column 4, a ceramic ferrule 5, a tail pipe sleeve 6, a dustproof sleeve 7, a self-focusing lens 8, a return spring 9, an elastic washer 10 and a locking nut 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The embodiment of the utility model provides an easy clear fiber connector, as shown in figure 1, including ceramic lock pin 5, ceramic lock pin 5 is equipped with the step, still includes sleeve structure and airtight optical window 3, airtight optical window 3 with the connection can be dismantled to sleeve structure, be equipped with the through-hole in the sleeve structure, be equipped with movable cavity in the through-hole, pottery is inserted one end and is inserted the through-hole and support and lean on airtight optical window 3's tip, ceramic lock pin 5's step is located in the movable cavity, just the one end of step supports and leans on movable cavity's one end, the other end of step with movable cavity's the other end passes through reset spring 9 and connects.

The utility model discloses a improve on the basis of original FC interface and obtain. FC, Fibre Channel, mesh Channel technology, was first applied to SANs (storage area networks). The FC interface is an interface standard form of fiber optic interfacing, and other common types are: ST, SC, LC, MTRJ, etc. The ceramic optical fiber is positioned in the through hole of the sleeve structure and mainly plays a role in connecting the two optical fibers. One optical fiber is sequentially inserted into the sleeve structure and connected with one end of the ceramic ferrule 5, and the other optical fiber is sequentially inserted into the sleeve structure from the airtight optical window 3 and connected with the other end of the ceramic ferrule 5, so that the butt joint of the two optical fibers is completed.

The airtight light window 3 is detachable from one end of the sleeve structure. The ceramic ferrule 5 is provided with a step, one end of the step can just abut against one end of the movable cavity, and the other end of the step is connected with the other end of the movable cavity through a return spring 9. When the sleeve structure is not butted with the airtight optical window 3, the ceramic ferrule 5 is popped out to be just aligned with the end face of the main body sleeve under the condition that the resilience force of the return spring 9 is reduced, the cleaning is easy to clean, and after the butting, the return spring 9 is compressed, and the ceramic ferrule 5 can be normally used after retreating into the sleeve structure. The whole structure is simple, and particularly, the internal structure of the optical fiber connector such as the ceramic ferrule 5 is convenient to clean.

According to the preferable scheme, the sleeve structure comprises a jaw sleeve 1 and a main body sleeve, a first stepped hole is formed in the jaw sleeve 1, a second stepped hole is formed in the main body sleeve, an internal thread is formed in the inner wall of the first stepped hole, an external thread connected with the internal thread is formed in the outer wall of the second stepped hole, and the movable cavity is formed after the first stepped hole is connected with the second stepped hole in a threaded mode. Therefore, between the connection jaw sleeve 1 and the main body sleeve, the ceramic ferrule 5 is firstly arranged in the main body sleeve and is provided with a second stepped hole, the reset spring 9 is placed, then the ceramic ferrule is slowly screwed into the jaw sleeve 1, and the other end of the reset spring 9 abuts against the first stepped hole in the jaw sleeve 1. After the installation is finished, the ceramic ferrule 5 is tightly abutted against the main body sleeve by pressing the return spring 9.

According to the preferable scheme, the sleeve structure comprises a jaw sleeve 1 and a main body sleeve, a first stepped hole is formed in the jaw sleeve 1, a second stepped hole is formed in the main body sleeve, and the first stepped hole is inserted into the second stepped hole to form the movable chamber; the main body sleeve is sleeved on the jaw sleeve 1, and pin holes for the pin columns 4 to be inserted and fixed are formed in the main body sleeve and the jaw sleeve 1. The jaw sleeve 1 and the main body sleeve can be in threaded connection or sleeved connection, and the jaw sleeve and the main body sleeve can be fixed by inserting the pin 4 into the pin hole during sleeving. The dustproof sleeve 7 is sleeved outside the jaw sleeve, and the pin hole is covered by the dustproof sleeve 7 to play a role in dust prevention and water prevention.

Preferably, the optical fiber connector further comprises a tail pipe sleeve 6, and the tail pipe sleeve 6 is clamped with the jaw sleeve 1. The tail pipe sleeve 6 plays a role in guiding and pressing the ceramic ferrule 5, the ceramic ferrule 5 is inserted into the tail pipe sleeve 6, and the tail pipe sleeve 6 has certain ductility and can be a rubber sleeve and mainly plays a role in pressing the jaw sleeve 1.

Preferably, a self-focusing lens 8 is embedded in the airtight optical window 3, and one end of the ferrule 5 abuts against the self-focusing lens 8. The self-focusing lens 8 plays a role of automatic focusing and facilitates the butt joint of optical fibers.

The embodiment of the utility model provides a self-centering formula fiber connector is still provided, as shown in fig. 1, including ceramic lock pin 5, still include the sleeve structure, the sleeve structure includes toper main part cover 2 and airtight optical window 3, toper main part cover 2 with airtight optical window 3 can be dismantled and be connected, be equipped with the frustum in airtight optical window 3, the main part cover is toper main part cover 2, the toper main part cover 2 end is equipped with the concave conical surface with the frustum butt of airtight optical window 3; a through hole is arranged in the conical main body sleeve 2, and one end of the ceramic ferrule 5 penetrates through the through hole and abuts against the tail end of the airtight optical window 3. The main body sleeve is a conical main body sleeve 2, and the tail end of the main body sleeve is provided with a concave conical surface. The ceramic ferrule 5 is inserted into the conical main body sleeve 2, then the airtight optical window 3 is installed, in the installation process, the frustum is gradually and completely contacted with the concave conical surface, so that the airtight optical window 3 and the conical main body sleeve 2 can be automatically centered, and the scheme has the advantages of simple structure and low cost.

Preferably, an elastic gasket 10 is arranged between the airtight light window 3 and the main body sleeve. The elastic gasket 10 plays a role in sealing and preventing shaking, so that the whole structural connection is more compact and firm and is not easy to loosen.

Preferably, an annular groove is formed in an end face of the airtight optical window 3, and the elastic gasket 10 is filled in the annular groove. The annular groove serves to radially secure the resilient gasket 10 against play.

Preferably, the tapered main body sleeve 2 is in threaded connection with the airtight light window 3. The conical body sleeve 2 can be directly screwed with the airtight light window 3. Or tapping the outer wall of the airtight aperture, sleeving the main body with a step, sleeving the locking nut 11 on the step, screwing the airtight aperture into the locking nut 11, and slowly pressing the airtight optical window 3 into the concave cone to realize butt joint.

The above examples are merely illustrative of the present invention and do not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.

Claims

1. The utility model provides a from centering formula fiber connector, includes ceramic lock pin, its characterized in that: the optical window sealing device is characterized by further comprising a sleeve structure, wherein the sleeve structure comprises a conical main body sleeve and an airtight optical window, the conical main body sleeve is detachably connected with the airtight optical window, a frustum is arranged in the airtight optical window, the main body sleeve is a conical main body sleeve, and a concave conical surface abutted against the frustum of the airtight optical window is arranged at the tail end of the conical main body sleeve;

and a through hole is formed in the conical main body sleeve, and one end of the ceramic ferrule penetrates through the through hole and abuts against the tail end of the airtight optical window.

2. The self-centering fiber optic connector of claim 1, wherein: the sleeve structure further comprises a jaw sleeve, the main body sleeve is sleeved on the jaw sleeve, and pin holes for inserting and fixing the bolts are formed in the main body sleeve and the jaw sleeve.

3. The self-centering fiber optic connector of claim 2, wherein: the optical fiber connector further comprises a tail pipe sleeve, and the tail pipe sleeve is clamped with the jaw sleeve.

4. The self-centering fiber optic connector of claim 1, wherein: the airtight optical window is internally embedded with a self-focusing lens, and one end of the ceramic ferrule is abutted against the self-focusing lens.

5. The self-centering fiber optic connector of claim 1, wherein: an elastic gasket is arranged between the airtight light window and the main body sleeve.

6. The self-centering fiber optic connector of claim 5, wherein: the end face of the airtight optical window is provided with an annular groove, and the elastic gasket is filled in the annular groove.

7. The self-centering fiber optic connector of claim 1, wherein: the conical main body sleeve is in threaded connection with the airtight light window.