Completely dustproof FC type optical fiber movable connector

Abstract

The utility model discloses a complete dustproof FC type optical fiber movable connector, which comprises a ceramic ferrule, a front sleeve, a connecting nut and a protective tube which are connected in sequence, a ferrule tail handle on the ceramic ferrule is exposed outside the front sleeve, the end part of the front sleeve is detachably provided with a dustproof cap, and the dustproof cap wraps the periphery of the ferrule tail handle. The dustproof cap is filled with a tail handle wrapping body which is easy to deform. The tail handle wrapping body is provided with a tail handle avoiding groove which is coaxial with the insertion core tail handle. When the dustproof cap and the front sleeve are assembled, the insertion core tail handle is located in the tail handle avoiding groove, and the peripheral side of the insertion core tail handle makes contact with the tail handle wrapping body. When the dustproof cap and the front sleeve are in a buckled state, the insertion core tail handle is completely located in the tail handle avoiding groove and is completely and tightly wrapped by the tail handle wrapping body, so that dust entering along a gap between the dustproof cap and the front sleeve is prevented from falling onto the insertion core tail handle, the cleanliness of the end face of the optical fiber is kept, and the service life of the optical fiber is prolonged. And thus, the coupling capability and the use stability can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication optical fiber connecting tool technical field especially, relates to a completely dustproof FC type optical fiber movable connector. BACKGROUND

[0002] The optical fiber movable connector is a kind of passive device for connecting two optical fibers or optical cables to form continuous optical path, usually referred to as live joint, can be widely applied to optical fiber transmission line, optical fiber distribution frame, optical fiber testing instrument etc., specifically, such as optical fiber jumper wire between optical terminal and optical distribution box;In optical distribution box, flange plate is used to connect tail fiber of jumper wire from optical terminal and outgoing optical cable;Various optical testers generally fix one end head of optical jumper wire on test port, and the other end is connected with test point etc.The optical fiber movable connector can ensure the precise butt joint of optical fiber end face, make the light energy output by transmitting optical fiber be coupled to receiving optical fiber maximumly, and minimize the influence on system.

[0003] In actual use process, dust and other small pollutants can easily enter the inside of the optical fiber movable connector, if falling on the optical fiber end face, it can seriously affect the coupling of light energy, even can lead to signal attenuation or communication interruption, so dustproof technology is particularly important when ensuring the precise butt joint of optical fiber end face.At present, the dustproof measure is to set a detachable dustproof cap at the end of the optical fiber movable connector, the dustproof cap is generally of rubber or plastic structure, is covered on the outer periphery of optical fiber end face for protection, but there is gap between the dustproof cap and optical fiber end face, external dust can still escape thereinto, especially when construction is carried out in the place where dust amount is larger, more dust escapes thereinto, so that the dustproof effect is greatly reduced, it is difficult to realize the complete dustproof of optical fiber end face. SUMMARY

[0004] The utility model provides a kind of FC type optical fiber movable connector of completely dustproof that can prevent dust from entering, keep the cleanness of optical fiber end face, to help ensure its coupling capacity and use stability.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows: a completely dustproof FC type optical fiber movable connector, comprising ceramic ferrule, front sleeve, connecting nut and protective tube connected in sequence, the ferrule tail handle on the ceramic ferrule is exposed to the outside of the front sleeve, a dustproof cap is detachably arranged at the end of the front sleeve, and the dustproof cap covers the outer periphery of the ferrule tail handle, the dustproof cap is filled with an easily deformable tail handle covering body, the tail handle covering body is provided with a tail handle avoiding slot coaxially arranged with the ferrule tail handle, and in the assembled state of the dustproof cap and the front sleeve, the ferrule tail handle is located in the tail handle avoiding slot and the peripheral side is in contact with the tail handle covering body.

[0006] Preferably, the profile of the tail handle avoiding groove corresponds to the shape of the plug core tail handle.

[0007] Preferably, the maximum depth of the tail handle avoiding groove corresponds to the maximum length of the plug core tail handle.

[0008] Preferably, the maximum depth of the tail handle avoiding groove is greater than the maximum length of the plug core tail handle, and a guide flared opening is arranged at the slot opening of the tail handle avoiding groove to facilitate the insertion of the plug core tail handle, and the guide flared opening is arranged gradually wider from inside to outside on the tail handle avoiding groove.

[0009] Preferably, the tail handle covering body is made of dustproof cotton, latex or silica gel.

[0010] Due to the above technical scheme, the following beneficial effects are achieved: in the buckling state of the dustproof cap and the front sleeve, the plug core tail handle is completely in the tail handle avoiding groove and is tightly covered by the tail handle covering body, so that the dust entering along the gap between the dustproof cap and the front sleeve falls on the plug core tail handle, the cleanliness of the fiber end face is maintained, and the coupling ability and the stability of use are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0011] The following drawings are only intended to illustrate and explain the present application, and do not limit the scope of the present application. Among them:

[0012] Figure 1 is a structural schematic view of an embodiment of the present application;

[0013] Figure 2 is Figure 1 is a sectional view of A in Fig.

[0014] Figure 3 is another structural schematic view of the tail handle avoiding groove of an embodiment of the present application;

[0015] In the figure: 1-ceramic plug core; 2-front sleeve; 3-connection nut; 4-protective tube; 5-plug core tail handle; 6-dustproof cap; 7-tail handle covering body; 8-tail handle avoiding groove; 9-guide flared opening. DETAILED DESCRIPTION

[0016] The present application will be further described below in conjunction with the drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present application are described by way of illustration. It is obvious for those skilled in the art that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of the claims.

[0017] like Figure 1 and Figure 2 As shown, the fully dustproof FC-type fiber optic connector prevents external dust from entering and settling on the ceramic ferrule 1, thus avoiding the impact of dust on optical energy coupling and eliminating signal attenuation or communication interruption. Specifically, it includes the ceramic ferrule 1, front sleeve 2, connecting nut 3, and protective tube 4 connected in sequence. All of the above structures and their assembly are well-known to those skilled in the art and will not be described in detail here.

[0018] In this design, the ferrule 5 on the ceramic ferrule 1 is exposed on the outside of the front sleeve 2. The end of the front sleeve 2 is detachably provided with a dust cap 6, which covers the outer periphery of the ferrule 5. The dust cap 6 is filled with a deformable ferrule cover 7, which has a ferrule clearance groove 8 coaxially arranged with the ferrule 5. When the dust cap 6 and the front sleeve 2 are assembled, the ferrule 5 is located in the ferrule clearance groove 8 and its periphery is in contact with the ferrule cover 7. Therefore, the ferrule cover 7 fills the gap between the ferrule 5 and the inner wall of the dust cap 6, blocking the path of dust into the dust cap 6 and preventing it from contacting the ferrule 5, thereby ensuring the cleanliness of the optical fiber end face.

[0019] In this embodiment, the tailstock cover 7 is made of dustproof cotton, latex, or silicone, which is soft and easily deformable. The tailstock cover 7 can be fixed inside the dust cap 6 or directly fitted and filled inside the dust cap 6, offering flexible installation options. When the diameter of the tailstock clearance groove 8 is slightly smaller than the diameter of the insert tailstock 5, the inserted insert tailstock 5 can press the tailstock cover 7 outward, making the contact between the two tighter and thus improving the dustproof effect.

[0020] like Figure 2 As shown, the outline of the tailstock clearance groove 8 corresponds to the shape of the ferrule tailstock 5, and the maximum depth of the tailstock clearance groove 8 corresponds to the maximum length of the ferrule tailstock 5. After the ferrule tailstock 5 is inserted, it can perfectly match the tailstock clearance groove 8, achieving full coverage of the tailstock clearance groove 8, thereby preventing dust from entering.

[0021] like Figure 3As shown, the maximum depth H1 of the tailstock clearance groove 8 is greater than the maximum length H2 of the ferrule tailstock 5. The tailstock clearance groove 8 has a guide flare 9 at its opening to facilitate the insertion of the ferrule tailstock 5, and the guide flare 9 gradually widens from the inside to the outside of the tailstock clearance groove 8. The guide flare 9 facilitates smoother and faster insertion of the ferrule tailstock 5, thereby enabling rapid assembly of the dust cap 6 and the front sleeve 2. The design purpose of the depth of the tailstock clearance groove 8 and the length of the ferrule tailstock 5 is that, after the dust cap 6 is assembled, the protrusion at the end of the ferrule tailstock 5 can compress the outer end of the tailstock cover 7, causing it to deform and extend into the guide flare 9, thus preventing dust from entering the guide flare 9 and contacting the ferrule tailstock 5, ensuring a dustproof effect.

[0022] The description of this utility model is given for illustrative and descriptive purposes only, and is not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the utility model, and to enable those skilled in the art to understand the utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A fully dustproof FC type fiber optic connector, comprising a ceramic ferrule, a front sleeve, a connecting nut, and a protective sleeve connected in sequence, wherein the ferrule tail shank on the ceramic ferrule is exposed outside the front sleeve, and the end of the front sleeve is detachably provided with a dust cap, the dust cap covering the outer periphery of the ferrule tail shank, characterized in that: The dust cap is filled with a deformable tailstock cover, and the tailstock cover is provided with a tailstock clearance groove coaxially arranged with the ferrule tailstock. When the dust cap and the front sleeve are assembled, the ferrule tailstock is located in the tailstock clearance groove and its periphery is in contact with the tailstock cover.

2. The fully dustproof FC type fiber optic connector as described in claim 1, characterized in that: The outline of the tailstock clearance groove corresponds to the shape of the insert tailstock.

3. The fully dustproof FC type fiber optic connector as described in claim 2, characterized in that: The maximum depth of the tailstock clearance groove corresponds to the maximum length of the ferrule tailstock.

4. The fully dustproof FC type fiber optic connector as described in claim 2, characterized in that: The maximum depth of the tailstock clearance groove is greater than the maximum length of the ferrule tailstock. The opening of the tailstock clearance groove is provided with a guide flare to facilitate the insertion of the ferrule tailstock, and the guide flare is gradually widened from the inside to the outside on the tailstock clearance groove.

5. The fully dustproof FC type fiber optic connector as described in any one of claims 1 to 4, characterized in that: The tailstock cover is made of dustproof cotton, latex, or silicone.

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