Anti-bending optical fiber protective sleeve

Abstract

This utility model relates to the field of optical fiber and discloses a bend-resistant optical fiber protective sleeve, including a protective sleeve body, the protective sleeve body including an anti-bending device; the anti-bending device includes an optical fiber, the outer side of which is fitted with an anti-bending sleeve, and a fixing wheel is fixedly connected to the outer side of the anti-bending sleeve. In this utility model, the core protective structure of this optical fiber protective sleeve body revolves around the internal optical fiber. An anti-bending sleeve is specially fitted on the outer side of the optical fiber. Utilizing the strong mechanical properties of the triangle's stability, the anti-bending sleeve itself has basic and reliable anti-bending capabilities. The entire internal protective assembly is fixed as a whole to the outer sleeve and the fixing wheel, and the spring will undergo elastic deformation accordingly, jointly transmitting the pressure to the reinforcing ring, effectively preventing external force from being transmitted to the internal optical fiber, thereby achieving the effect of avoiding deformation of the protective sleeve body and preventing bending or permanent damage to the optical fiber.

Description

Technical Field

[0001] This utility model relates to the field of optical fibers, and in particular to a bend-resistant optical fiber protective sleeve. Background Technology

[0002] Optical fiber is a thin cable made of glass or plastic. Its core function is to transmit data at high speed through light signals. The inner layer is a high-refractive-index fiber core, which is responsible for transmitting light signals. The middle layer is a low-refractive-index cladding, which confines the light within the fiber core through the principle of total internal reflection. The outermost layer is a protective layer, which plays a role in resisting wear and corrosion. Today, optical fiber has become the core backbone of global communication networks and is widely used in Internet backbone networks, 5G base station connections, and home broadband and other scenarios.

[0003] Fiber optic protective sleeves are protective structures wrapped around optical fibers. Their core function is to isolate them from external environmental damage and ensure stable fiber optic transmission. They are typically made of weather-resistant materials such as polyethylene and polyvinyl chloride, while flame-retardant or corrosion-resistant materials are used in some special applications. They can be divided into indoor and outdoor types based on their application. Indoor sleeves emphasize lightweight and flexibility, while outdoor sleeves are enhanced with resistance to ultraviolet rays, high and low temperatures, and mechanical shock.

[0004] When existing fiber optic protective sleeves lack bend resistance, external bending force is directly transmitted to the fiber core, which may bend or undergo permanent deformation, disrupting the total internal reflection path of light and causing significant signal attenuation, manifested as slower network speed and data packet loss. If the bending angle is too large or the force is too strong, the brittle glass fiber core may break directly, leading to a complete communication interruption. Moreover, repair is difficult and costly. Therefore, a bend-resistant fiber optic protective sleeve is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a bend-resistant fiber optic protective sleeve, which aims to improve the existing technology where the external bending force of the bend-resistant fiber optic protective sleeve is directly transmitted to the fiber core, which may cause micro-bending or permanent deformation of the fiber core, destroying the total internal reflection path of light and causing significant signal attenuation, manifested as slower network speed and data packet loss. If the bending angle is too large or the force is too strong, the brittle glass fiber core will break directly, resulting in a complete communication interruption, and the repair is difficult and costly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bend-resistant optical fiber protective sleeve, comprising a protective sleeve body, the protective sleeve body including an bend-resistant device; the bend-resistant device comprising an optical fiber, an anti-bend sleeve sleeved on the outer side of the optical fiber, a fixed wheel fixedly connected to the outer side of the anti-bend sleeve, a support rod fixedly connected to the side of the fixed wheel, a spring fixedly connected to the side of the fixed wheel, a reinforcing ring slidably connected to the outer side of the support rod, an elastic ring fixedly connected to the side of the reinforcing ring, a fixed wheel elastically connected to the side of the support rod via a spring, an outer sleeve fixedly connected to the side of the fixed wheel, a connecting ring movably connected to the outer side of the outer sleeve, a base fixedly connected to the side of the connecting ring, and a stabilizing device provided on the side of the connecting ring.

[0007] As a further description of the above technical solution: the stabilizing device includes a ring body, a connecting plate is fixedly connected to the side of the ring body, a fixing bolt is threaded inside the ring body, a fixing flange is connected to the inside flange of the connecting plate, a connecting arc one is fixedly connected to the side of the connecting plate, a connecting arc two is fixedly connected to the side of the ring body, and a support leg is elastically connected to the connecting arc two by a spring two.

[0008] As a further description of the above technical solution: one side of the spring is fixedly connected to the side of the support rod, and the other side is fixedly connected to the side of the fixed wheel.

[0009] As a further description of the above technical solution: the base has a flange groove inside, and the size of the flange groove inside the base matches that of the fixed flange.

[0010] As a further description of the above technical solution: one side of the second spring is fixedly connected to the side of the second connecting arc, and the other side is fixedly connected to the side of the supporting leg.

[0011] As a further description of the above technical solution: the inner surface of the outer casing is provided with a threaded groove, and the size of the threaded groove inside the outer casing matches that of the fixing bolt.

[0012] As a further description of the above technical solution: the interior of the connecting arc one is provided with a rotating groove, and the rotating groove inside the connecting arc one matches one side of the support leg.

[0013] As a further description of the above technical solution: the interior of the second connecting arc is provided with a rotating groove, and the rotating groove inside the second connecting arc matches the other side of the support leg.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the core protective structure of the fiber optic protective sleeve body revolves around the internal fiber optic cable. A layer of anti-bending sleeve is specially fitted on the outside of the fiber optic cable. Utilizing the strong mechanical properties of the triangle's stability, the anti-bending sleeve itself has a basic and reliable anti-bending capability. A fixing wheel is also fixed on the side of the anti-bending sleeve. The entire internal protective component is fixed as a whole to the outside of the outer sleeve and the fixing wheel. The spring will undergo elastic deformation accordingly, and together transmit the pressure to the reinforcing ring, effectively preventing external force from being transmitted to the internal fiber optic cable, thereby achieving the effect of avoiding deformation of the protective sleeve body and preventing the fiber optic cable from bending or permanent damage.

[0016] 2. In this utility model, a connecting ring is specially fixed on the outer side of the protective sleeve body. The connecting plate extending from the side of the ring body is fixed to the base through a fixed flange, so that the ring body, the outer sleeve body and the protective sleeve body form a three-in-one stable structure. The support leg can adjust the support angle through the slot according to the installation scenario requirements. The spring can absorb the impact force through elastic deformation, reducing the impact of external force on the overall structure. Thus, on the basis of flange fixing and thread fixing, an additional layer of stability guarantee is added to ensure that the protective sleeve body and the internal optical fiber are in a stable installation state for a long time. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of an anti-bending fiber optic protective sleeve proposed in this utility model.

[0018] Figure 2 This is a partial three-dimensional cross-sectional view of a bend-resistant optical fiber protective sleeve proposed in this utility model.

[0019] Figure 3 This is a front cross-sectional view of a fiber optic protective sleeve for preventing bending according to the present invention.

[0020] Figure 4 This is a three-dimensional side view of an anti-bending fiber optic protective sleeve proposed in this utility model.

[0021] Legend:

[0022] 1. Protective sleeve body; 2. Anti-bending device; 21. Optical fiber; 22. Anti-bending sleeve; 23. Fixed wheel one; 24. Support rod; 25. Spring piece; 26. Reinforcing ring; 27. Elastic ring; 28. Spring one; 29. ​​Fixed wheel two; 210. Outer sleeve; 211. Connecting ring; 212. Base; 3. Stabilizing device; 31. Ring body; 32. Connecting plate; 33. Fixing bolt; 34. Fixing flange; 35. Connecting arc one; 36. Connecting arc two; 37. Spring two; 38. Support leg. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1-2 This utility model provides an embodiment of an anti-bending fiber optic protective sleeve, comprising a protective sleeve body 1, the protective sleeve body 1 including an anti-bending device 2; multiple sets of anti-bending devices 2 are arranged inside the protective sleeve body 1, each anti-bending device 2 including an optical fiber 21, an anti-bending sleeve 22 sleeved on the outer side of the optical fiber 21, a fixed wheel 23 fixedly connected to the outer side of the anti-bending sleeve 22, a support rod 24 fixedly connected to the side of the fixed wheel 23, a spring piece 25 fixedly connected to the side of the fixed wheel 23, a reinforcing ring 26 slidably connected to the outer side of the support rod 24, and a reinforcing ring 26 fixedly connected to the side of the reinforcing ring 26. A support rod 24 is connected to an elastic ring 27. A fixed wheel 29 is elastically connected to the side of the support rod 24 via a spring 28. One side of the spring 28 is fixedly connected to the side of the support rod 24, and the other side is fixedly connected to the side of the fixed wheel 29. This design allows the other side of the support rod 24 to slide on the side of the fixed wheel 29 via the spring 28. An outer sleeve 210 is fixedly connected to the side of the fixed wheel 29. A connecting ring 211 is movably connected to the outer side of the outer sleeve 210. A base 212 is fixedly connected to the side of the connecting ring 211. A stabilizing device 3 is provided on the side of the connecting ring 211.

[0025] Reference Figures 3-4The stabilizing device 3 includes a ring body 31, a connecting plate 32 fixedly connected to the side of the ring body 31, and a fixing bolt 33 threadedly connected to the inside of the ring body 31. The inner surface of the outer sleeve 210 has a threaded groove, the size of which matches the fixing bolt 33. This design allows the outer sleeve 210 and the ring body 31 to be threadedly fixed together by the fixing bolt 33. A fixing flange 34 is connected to the inner flange of the connecting plate 32. A flange groove is opened inside the base 212, the size of which matches the fixing flange 34. This design allows the connecting plate 32 flange to be fixed to the side of the base 212 by the fixing flange 34. A connecting arc 35 is fixedly connected to the side of the connecting plate 32. A connecting arc 2 36 is fixedly connected to the side of 31. The connecting arc 2 36 is elastically connected to the support leg 38 through the spring 2 37. The connecting arc 2 36 has a rotating groove inside, and the rotating groove inside the connecting arc 2 36 matches the other side of the support leg 38. This design allows the other side of the support leg 38 to rotate inside the connecting arc 2 36. A connecting arc 1 35 has a rotating groove inside, and the rotating groove inside the connecting arc 1 35 matches one side of the support leg 38. This design allows one side of the support leg 38 to rotate inside the connecting arc 1 35. One side of the spring 2 37 is fixedly connected to the side of the connecting arc 2 36, and the other side is fixedly connected to the side of the support leg 38. This design allows the spring 2 37 to enhance the fixed stability of the support leg 38.

[0026] Working Principle: The core protective structure of this protective sleeve body 1 revolves around the internal optical fiber 21. A bend-resistant sleeve 22 is specially fitted onto the outside of the optical fiber 21. This layer is a key component for resisting bending damage. The internal structure of the bend-resistant sleeve 22 is not a single structure, but is composed of multiple sets of triangular supports combined together. Utilizing the strong mechanical properties of triangle stability, the bend-resistant sleeve 22 itself has basic and reliable anti-bending capabilities, which can initially offset the bending force transmitted from the outside and prevent the optical fiber 21 from directly bearing pressure. To further enhance the protective effect, a fixing wheel 23 is also fixed to the side of the bend-resistant sleeve 22. The side of the fixing wheel 23 is connected to the support rod 24, and the other end of the support rod 24 is connected to the fixing wheel 29 via a spring 28, forming a buffered elastic support structure. At the same time, both sides of the fixing wheel 23 are tightly fixed to the side of the reinforcing ring 26 by spring pieces 25. The entire internal protective component is then fixed to the fixing wheel 29 as a whole by the outer sleeve 210, ensuring that the structure works in synergy. When the protective sleeve body 1 is subjected to external bending or compression, the spring 28 will first absorb part of the impact force through extension and contraction, and the spring piece 25 will undergo elastic deformation accordingly, jointly transmitting the pressure to the reinforcing ring 26; the reinforcing ring 26 further disperses the pressure with its own rigidity, ultimately forming multiple anti-compression defense lines, effectively preventing external force from being transmitted to the internal optical fiber 21, thereby achieving the effect of avoiding deformation of the protective sleeve body 1, preventing bending or permanent damage to the optical fiber 21, and ensuring the stability of the signal transmission of the optical fiber 21.

[0027] To further enhance the installation stability and structural integrity of the protective sleeve body 1 and the internal optical fiber 21, a connecting ring 211 is specifically fixed to the outer side of the protective sleeve body 1, serving as the core interface for external connection and fixation. For connection with the external structure, the connecting plate 32 extending from the side of the ring 31 is flange-fixed to the base 212 via a fixing flange 34. This connection method significantly improves the sealing and pull-out resistance of the connection points. The ring 31 is also threadedly fixed to the outer sleeve 210 of the protective sleeve via fixing bolts 33, forming a three-in-one stable structure with the ring 31, outer sleeve 210, and protective sleeve body 1. This dual reinforcement of overall stability from both horizontal and vertical directions prevents relative displacement between components. Furthermore, connecting arc 1 35 and connecting arc 2 36 are respectively fixed to the sides of the connecting plate 32 and the ring 31, and their internal... All are connected to support legs 38 via swivel joints. The support legs 38 can be adjusted in angle via swivel joints to adapt to different installation environments according to the installation requirements. In addition, springs 37 are fixed to the outside of the support legs 38. When the protective sleeve is subjected to slight vibration or external pressure, springs 37 can absorb the impact force through elastic deformation, reducing the impact of external force on the overall structure. At the same time, it further tightens the connection between the support legs 38 and the connecting arc, preventing the support legs 38 from shifting. Thus, on the basis of flange fixing and thread fixing, an additional layer of stability guarantee is added to ensure that the protective sleeve body 1 and the internal optical fiber 21 are in a stable installation state for a long time.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bend-resistant fiber optic protective sleeve, comprising a protective sleeve body (1), characterized in that: The protective sleeve body (1) includes an anti-bending device (2); The anti-bending device (2) includes an optical fiber (21), an anti-bending sleeve (22) is sleeved on the outside of the optical fiber (21), a fixed wheel (23) is fixedly connected to the outside of the anti-bending sleeve (22), a support rod (24) is fixedly connected to the side of the fixed wheel (23), a spring piece (25) is fixedly connected to the side of the fixed wheel (23), a reinforcing ring (26) is slidably connected to the outside of the support rod (24), an elastic ring (27) is fixedly connected to the side of the reinforcing ring (26), a fixed wheel (29) is elastically connected to the side of the support rod (24) through a spring (28), an outer sleeve (210) is fixedly connected to the side of the fixed wheel (29), a connecting ring (211) is movably connected to the outside of the outer sleeve (210), a base (212) is fixedly connected to the side of the connecting ring (211), and a stabilizing device (3) is provided on the side of the connecting ring (211).

2. The anti-bending fiber optic protective sleeve according to claim 1, characterized in that: The stabilizing device (3) includes a ring body (31), a connecting plate (32) is fixedly connected to the side of the ring body (31), a fixing bolt (33) is threaded inside the ring body (31), a fixing flange (34) is connected to the inside of the connecting plate (32), a connecting arc one (35) is fixedly connected to the side of the connecting plate (32), a connecting arc two (36) is fixedly connected to the side of the ring body (31), and a support leg (38) is elastically connected to the connecting arc two (36) through a spring two (37).

3. The anti-bending fiber optic protective sleeve according to claim 1, characterized in that: One side of the spring (28) is fixedly connected to the side of the support rod (24), and the other side is fixedly connected to the side of the fixed wheel (29).

4. The anti-bending fiber optic protective sleeve according to claim 2, characterized in that: The base (212) has a flange groove inside, and the flange groove inside the base (212) matches the size of the fixed flange (34).

5. The anti-bending fiber optic protective sleeve according to claim 2, characterized in that: One side of the second spring (37) is fixedly connected to the side of the second connecting arc (36), and the other side is fixedly connected to the side of the support leg (38).

6. The anti-bending fiber optic protective sleeve according to claim 2, characterized in that: The inner surface of the outer casing (210) is provided with a threaded groove, and the threaded groove inside the outer casing (210) matches the size of the fixing bolt (33).

7. The anti-bending fiber optic protective sleeve according to claim 2, characterized in that: The connecting arc (35) has a groove inside, and the groove inside the connecting arc (35) matches one side of the support leg (38).

8. The anti-bending fiber optic protective sleeve according to claim 2, characterized in that: The connecting arc 2 (36) has a rotating groove inside, and the rotating groove inside the connecting arc 2 (36) matches the other side of the support leg (38).

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