Dustproof cap for optical fiber ferrule

Abstract

The utility model provides an optical fiber ferrule dustproof cap, which comprises an optical fiber connecting plug, a retainer and a dustproof cap body, one end of the retainer is connected with the optical fiber connecting plug, the dustproof cap body is fixed on the optical fiber connecting plug through an arranged elastic connecting band, and the retainer is provided with an accommodating groove with an open upper end face; the containing groove forms extrusion force towards the center direction on the inserted optical fiber, the optical fiber is clamped, the optical fiber is not prone to moving in the containing groove, meanwhile, the dustproof cap body is fixed to the optical fiber connecting plug through the elastic connecting band, and the optical fiber connecting plug is fixedly connected with the maintaining piece. The dustproof cap body and the optical fiber installed in the containing groove in the maintaining piece are in a relative position fixed state through the elastic connecting band and the optical fiber connecting plug, in the transportation or storage process of the optical fiber, even if the optical fiber moves under the action of external force, the dustproof cap body can move along with the optical fiber synchronously, and therefore the dustproof effect is achieved. And the phenomenon that the dustproof cap body falls off and slides out due to the movement of the optical fiber is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical fiber equipment technical field, concretely relates to a dust cap of optical fiber ferrule. BACKGROUND

[0002] The main role of the dust cap of optical fiber ferrule is to protect the optical fiber ferrule, prevent external dust and other pollutants from entering, thereby keeping the optical fiber ferrule clean and ensuring the stable operation of the optical fiber communication system.

[0003] In actual use, optical fibers often need to be connected by optical fiber connectors to achieve the connection between optical fibers, so that the energy output by one optical fiber can be maximally received by another optical fiber. Before installation and docking, the end of the optical fiber is sleeved with a dust cap to prevent dust or foreign matter from adhering to the end of the optical fiber. In the prior art, the dust cap is usually directly inserted into the end of the optical fiber. However, when the optical fiber is in a storage or transportation state, the optical fiber moves under external force (such as jolting during transportation or taking), causing the dust cap to slide off the end of the optical fiber and not easily detected, thereby exposing the end of the optical fiber for a long time and affecting its subsequent use. SUMMARY

[0004] In view of the defects in the prior art, the utility model aims to provide a dust cap of optical fiber ferrule to solve the problem of the end of the optical fiber exposed and affecting its subsequent use caused by the dust cap on the optical fiber falling off due to movement under external force when the optical fiber is in a storage or transportation state.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] The application provides a dust cap of optical fiber ferrule, which comprises an optical fiber connection plug, a retaining member and a dust cap body. One end of the retaining member is connected to the optical fiber connection plug. The dust cap body is fixed on the optical fiber connection plug by the elastic connecting belt. The retaining member is provided with a receiving groove with an open upper end surface. The receiving groove penetrates the front and rear end surfaces of the retaining member.

[0007] Further, the inner wall of the receiving groove is provided with a plurality of outwardly protruding elastic extrusion parts in the circumferential direction.

[0008] Further, the elastic extrusion part has a circular rod-shaped outer shape structure, and is made of rubber material.

[0009] Further, the bottom end surface of the retaining member is provided with a downwardly protruding pressing part on each side.

[0010] Further, the dustproof cap body comprises a cylindrical cap body, the cap body is provided with a containing hole for containing the optical fiber, and the cap body is fixed on the inner side of one end of the elastic connecting belt.

[0011] Further, one side bottom end of the retaining member is fixedly installed at one end of the optical fiber connecting plug through the connecting block.

[0012] The optical fiber ferrule dustproof cap has the advantages that:

[0013] The optical fiber ferrule dustproof cap has the advantages that: BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the optical fiber ferrule dustproof cap in the embodiment of the application.

[0015] Figure 2 It is a three-dimensional structure schematic view of the retaining member in the embodiment of the application.

[0016] Figure 3 It is a state schematic view of taking out the optical fiber from the retaining member in the embodiment of the application.

[0017] Figure 4 It is a structure state schematic view of the dustproof cap body in the embodiment of the application being connected to the first optical fiber connecting plug unit through the elastic connecting belt.

[0018] Figure 5 It is a structure state schematic view of the dustproof cap body in the embodiment of the application being connected to the second optical fiber connecting plug unit through the elastic connecting belt.

[0019] Figure 6An enlarged structure state schematic view of the dustproof cap body mounted on the inner wall of one end of the elastic connecting belt in the dustproof cap of the embodiment of the present application.

[0020] In the drawings:

[0021] 10 - dustproof cap for fiber ferrule;

[0022] 20 - optical fiber;

[0023] 100 - fiber connector, 101 - first fiber connector unit, 102 - second fiber connector unit;

[0024] 200 - holder, 201 - accommodating groove, 202 - elastic extrusion part, 203 - connecting block, 204 - pressing part;

[0025] 300 - elastic connecting belt;

[0026] 400 - dustproof cap body, 401 - cap body, 402 - accommodating hole. DETAILED DESCRIPTION

[0027] The utility model will be further explained in detail in combination with the drawings and specific embodiments of the present application.

[0028] Referring to the drawings Figure 1 As shown in the drawings, the embodiment provides a dustproof cap 10 for fiber ferrule, which comprises a fiber connector 100, a holder 200 and a dustproof cap body 400, the holder 200 is fixedly installed at one end of the fiber connector 100, the dustproof cap body 400 is arranged at the other end of the fiber connector 100, wherein the dustproof cap body 400 is mounted on the fiber connector 100 through the provided elastic connecting belt 300.

[0029] Referring to the drawings Figure 1 and the drawings Figure 2As shown, in the embodiment, the holder 200 is used to limit the forward and backward movement of the optical fiber. Specifically, the holder 200 has an outer shape of a rectangular cross section, and an accommodating groove 201 with an open upper end is formed in the holder 200 and extends through the front and back end surfaces of the holder 200. The optical fiber can pass through the accommodating groove 201 and enter the optical fiber connector 100. The cross section of the accommodating groove 201 is a circular shape with an open upper end, and the opening size of the accommodating groove 201 is slightly smaller than the outer shape size of the optical fiber, for example, the opening size of the accommodating groove 201 is 2-8 mm smaller than the outer shape size of the optical fiber. In this way, after the optical fiber is installed in the accommodating groove 201, the outer peripheral surface of the optical fiber is pressed against the inner wall of the accommodating groove 201, the inner wall of the accommodating groove 201 is deformed by the pressing, thereby forming a pressing force on the optical fiber installed in the accommodating groove 201 to hinder the movement of the optical fiber. It can be understood that the holder 200 itself should have a certain elastic deformation capability so as to be elastically deformed and generate a pressing force on the optical fiber during the installation of the optical fiber. For example, the holder 200 is made of rubber material.

[0030] Referring to the accompanying Figure 2 and the accompanying Figure 3 As shown, in the embodiment, the inner wall of the accommodating groove 201 can further be provided with a plurality of elastic pressing portions 202 arranged at intervals in the circumferential direction. The elastic pressing portions 202 are protruded outward from the inner wall of the accommodating groove 201. The elastic pressing portions 202 are provided to improve the pressing force of the accommodating groove 201 on the optical fiber installed therein and further prevent the movement of the optical fiber installed in the accommodating groove 201.

[0031] Referring to the accompanying Figure 2 and the accompanying Figure 3 As shown, in some embodiments, the elastic pressing portion 202 has a circular rod-shaped outer shape and is arranged in the axial direction of the accommodating groove 201. The elastic pressing portion 202 is made of rubber material and is integrally formed with the holder 200.

[0032] Referring to the accompanying Figure 1 and the accompanying Figure 2 As shown, the holder 200 is fixedly connected to one end of the optical fiber connector 100 through a connecting block 203 provided at the bottom end of one side of the holder 200. The connecting block 203 is provided to make the holder 200 and the optical fiber connector 100 integral. In this way, the part of the optical fiber installed between the optical fiber connector 100 and the holder 200 is not prone to forward and backward movement. That is, the distance between the part of the optical fiber installed between the optical fiber connector 100 and the holder 200 is fixed, and the part of the optical fiber between the optical fiber connector 100 and the holder 200 is not prone to forward and backward movement due to external force acting on the optical fiber.

[0033] The dustproof cap body 400 is fixed on the optical fiber connecting plug 100 through the elastic connecting band 300, and the optical fiber connecting plug 100 is fixedly connected with the holder 200, so that the dustproof cap body 400 is in a relative position fixed state with the optical fiber accommodated in the accommodating groove 201 of the holder 200 through the elastic connecting band 300 and the optical fiber connecting plug 100. Thus, even if the optical fiber moves under the action of external force during transportation or storage, the dustproof cap body 400 will move synchronously with the optical fiber, thereby avoiding the phenomenon that the dustproof cap body 400 falls out due to the movement of the optical fiber.

[0034] Referring to the accompanying drawings Figure 2 and the accompanying drawings Figure 3 As shown in the accompanying drawings, in the present embodiment, the bottom end surface of the holder 200 is provided with a downward protruding pressing portion 204 on both sides. The pressing portion 204 is provided to facilitate the operator to take out the optical fiber accommodated in the accommodating groove 201. Figure 3 As shown in the accompanying drawings, specifically, when it is necessary to take out the optical fiber accommodated in the accommodating groove 201, the operator squeezes the pressing portion 204 on both sides of the bottom end surface of the holder 200 inward, so that the slot opening of the accommodating groove 201 in the holder 200 is turned outward. At this time, the operator can conveniently take out the optical fiber from the accommodating groove 201.

[0035] Referring to the accompanying drawings Figure 1 and the accompanying drawings Figure 6 As shown in the accompanying drawings, in the present embodiment, the dustproof cap body 400 includes a cylindrical cap body 401, and the cap body 401 is provided with an accommodating hole 402 for accommodating the optical fiber. The cap body 401 is fixed on the inner side surface of one end of the elastic connecting band 300. In some embodiments, the dustproof cap body 400 and the elastic connecting band 300 are integrally formed. By fixing the dustproof cap body 400 on one end of the elastic connecting band 300, the dustproof cap body 400 will not be easily lost during use.

[0036] Referring to the accompanying drawings Figure 4 and the accompanying drawings Figure 5As shown, the mounting position of the elastic connecting band 300 on the fiber optic connector 100 can be mounted on the first fiber optic connector unit 101 at the rear end or the second fiber optic connector unit 102 at the front end, and it can be understood that the elastic connecting band 300 is selectively mounted on the first fiber optic connector unit 101 or the second fiber optic connector unit 102, and the elastic connecting band 300 of different lengths can be selected, and such arrangement is considered that the fiber optic ferrule dust cap manufacturer can print manufacturer information or product information and other information on the elastic connecting band 300, and according to the length of the printed information, the elastic connecting band 300 can be selectively fixed to the first fiber optic connector unit 101 or the second fiber optic connector unit 102.

[0037] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A dust cap for an optical fiber ferrule, comprising an optical fiber connector plug, characterized in that, The dustproof cap body is fixed on the optical fiber connecting plug through the elastic connecting band.

2. A dust cap for a fiber optic ferrule as defined in claim 1, wherein, The inner wall of the accommodating groove is provided with a plurality of outwardly protruding elastic extrusion parts in the circumferential direction.

3. A dust cap for a fiber optic ferrule as defined in claim 2, wherein, The elastic extrusion part is a round bar-shaped outer structure, and is made of rubber material.

4. A dust cap for a fiber optic ferrule as in any of claims 1-3, wherein: The bottom end surface of the retaining member is provided with a downwardly protruding pressing part on each side.

5. A dust cap for a fiber optic ferrule as defined in claim 4, wherein, The dustproof cap body includes a cylindrical cap body, the cap body is provided with an accommodating hole for accommodating an optical fiber, and the cap body is fixed on the inner side surface of one end of the elastic connecting band.

6. A dust cap for a fiber optic ferrule as defined in claim 1, wherein, The bottom end of one side of the retaining member is fixedly installed on one end of the optical fiber connecting plug through the connecting block.

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