Compression-resistant butterfly-shaped optical cable

Abstract

The invention relates to the technical field of optical communication, in particular to a compression-resistant butterfly-shaped optical cable. Comprising a protective sleeve, a plurality of optical fibers are installed in the protective sleeve, the thickness of the axial cross section of the protective sleeve ranges from 0.2 mm to 1.0 mm, the protective sleeve is made of thermoplastic polyurethane materials containing capsaicin microcapsules, the protective sleeve is provided with first reinforcing ribs, the thickness of the middle of the protective sleeve is larger than that of the two sides of the protective sleeve, and the thickness of the middle of the protective sleeve is larger than that of the two sides of the protective sleeve. The cross section of the first reinforcing rib is larger than that of the optical fiber, and the first reinforcing rib is used for providing support. Through supporting of the first reinforcing ribs, the optical fibers are prevented from being directly pressed, so that protection on the optical fibers is improved, and the service life of the optical fibers is prolonged; the capsaicin microcapsules are added into the raw materials through the protective sleeve, and the capsaicin is used for strongly stimulating the olfactory and gustatory systems of rodents, so that the optical cable is prevented from being contacted or occluded again, and the service life of the optical cable is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of optical communication technologies, and particularly to a compression-resistant butterfly optical cable. Background Art

[0002] With the popularization of fiber-to-the-home technology, butterfly optical cables have become key components for indoor and outdoor optical cable wiring due to their flattened structure, high flexibility, and low cost. However, in complex environment deployments, especially during pipe threading, wall fixing, or soil burial, due to the flat cross-section design of butterfly optical cables, local stress concentration is likely to occur. In such cases, the sheath will undergo plastic deformation under high stress, resulting in microbending loss of the fiber core. Microbending loss will significantly reduce the signal transmission quality, manifested as signal attenuation and increased bit error rate. In extreme cases, continuous high stress will cause the fiber core to break, resulting in communication interruption, seriously affecting the reliability and stability of the network. In addition, in hot and humid climate regions, butterfly optical cables are at significant risk of biological erosion. Termites and rodents will bite the sheath of the butterfly optical cable, leading to an increase in the sheath breakage rate. This biting effect not only directly affects the transmission stability of optical signals but also shortens the service life of the optical cable. Summary of the Invention

[0003] In order to overcome the problems proposed in the above background art, the present invention provides a compression-resistant butterfly optical cable.

[0004] The technical solution is as follows: A compression-resistant butterfly optical cable includes a protective sheath. A plurality of optical fibers are installed inside the protective sheath. The thickness range of the axial cross-section of the protective sheath is 0.2 mm - 1.0 mm. The protective sheath is made of a thermoplastic polyurethane material containing capsaicin microcapsules. A first reinforcing rib is installed in the middle of the protective sheath. The thickness in the middle of the protective sheath is greater than that on both sides thereof, and the cross-section of the first reinforcing rib is larger than the cross-section of the optical fiber. The first reinforcing rib is used to provide support and prevent damage to the optical fiber under pressure.

[0005] Preferably, the mass ratio of the capsaicin microcapsules is 0.5% - 1.2% of the total weight of the protective sheath, and the particle size distribution of the microcapsules satisfies D90 ≤ 50 μm.

[0006] Preferably, two second reinforcing ribs are installed on the protective sheath, and the two second reinforcing ribs are respectively located on both sides of the first reinforcing rib. The cross-section of the second reinforcing rib is smaller than the cross-section of the first reinforcing rib.

[0007] Preferably, multiple pairs of notch grooves are provided on the surface of the protective sheath. The number of pairs of notch grooves is the same as the number of optical fibers, and the multiple pairs of notch grooves are staggered with the multiple optical fibers. Uniformly distributed rubber balls are adhered in the notch grooves of the protective sheath. The rubber balls are used to prevent continuous cracking at the notch grooves.

[0008] Preferably, it further includes: a support member installed inside the protective sleeve. A cylindrical hole is provided in the middle of the support member, and the first reinforcing rib is located in the cylindrical hole of the support member. Two sets of grooves are provided on the support member; an assembly member, there are two of them, which are respectively detachably installed in the adjacent grooves, and the assembly member contacts the protective sleeve, and the assembly member wraps the adjacent optical fiber and the adjacent second reinforcing rib.

[0009] Preferably, the support member is provided with symmetrically distributed cavities for providing a deformation range for the bending of the support member.

[0010] Preferably, the cross-section of the cylindrical hole on the support member is larger than the cross-section of the first reinforcing rib. Uniformly distributed annular sleeves are installed in the cylindrical hole of the support member. The annular sleeves are made of silicone rubber and contact the first reinforcing rib.

[0011] Preferably, an elastic sleeve is installed inside the assembly member, and the elastic sleeve is sleeved outside the adjacent optical fiber and the adjacent second reinforcing rib.

[0012] Preferably, the support member and the two assembly members jointly wrap a fiber layer, and the fiber layer contacts the protective sleeve.

[0013] Preferably, uniformly distributed grooves are provided on the assembly member for providing a movement range for the bending of the assembly member, and a plurality of through holes are provided on the assembly member.

[0014] Compared with the prior art, the present invention has the following advantages: Through the support of the first reinforcing rib, the extrusion force received by the optical fiber is reduced, thereby improving the protection of the optical fiber and extending its service life; by adding capsaicin microcapsules to the raw material in the protective sleeve, and using the strong stimulation of capsaicin to the olfactory and taste systems of rodents to avoid re - contacting or biting this optical cable, thereby extending the service life of this optical cable; using the blocking of the rubber ball to prevent the protective sleeve from being torn too long; using the support member, the assembly member, the elastic sleeve and the fiber layer to form a multi - layer protection, improving the tensile performance of this optical cable and further extending the service life of the optical fiber; through the limit support of the grooves on the assembly member, the bending deformation range of this optical cable is ensured, and the optical fiber is prevented from being damaged due to excessive bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three - dimensional structural schematic diagram of the present invention; Figure 2 is a cross - sectional view of the protective sleeve and the fiber layer of the present invention; Figure 3 is a cross - sectional view of the support member and the assembly member of the present invention; Figure 4 Schematic three-dimensional structure diagram of the first reinforcing rib and the annular sleeve of the present invention; Figure 5 Cross-sectional view of the assembly of the present invention.

[0016] The reference signs in the drawings are as follows: 1, protective sleeve; 2, optical fiber; 3, first reinforcing rib; 301, second reinforcing rib; 4, notch groove; 5, rubber ball; 6, support member; 601, groove; 602, cavity; 603, annular sleeve; 7, assembly; 8, elastic sleeve; 9, fiber layer; 10, groove; 11, through hole. Detailed implementation manners

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention and do not limit the present invention.

[0018] Embodiment 1: A compression-resistant butterfly optical cable, as Figure 1 and Figure 2 shown, includes a protective sleeve 1. A plurality of optical fibers 2 are installed in the protective sleeve 1. The thickness range of the axial cross-section of the protective sleeve 1 is 0.2 mm - 1.0 mm. The protective sleeve 1 is made of a thermoplastic polyurethane material containing capsaicin microcapsules. A first reinforcing rib 3 is installed in the middle of the protective sleeve 1. The thickness of the middle of the protective sleeve 1 is greater than the thickness of its two sides, and the cross-section of the first reinforcing rib 3 is larger than the cross-section of the optical fiber 2. The first reinforcing rib 3 is used to provide support and prevent damage to the optical fiber 2 under pressure; the mass ratio of the capsaicin microcapsules is 0.5% - 1.2% of the total weight of the protective sleeve 1, and the particle size distribution of the microcapsules satisfies D90 ≤ 50 μm; two second reinforcing ribs 301 are installed on the protective sleeve 1, and the two second reinforcing ribs 301 are respectively located on both sides of the first reinforcing rib 3. The cross-section of the second reinforcing rib 301 is smaller than the cross-section of the first reinforcing rib 3.

[0019] In the above solution, four optical fibers 2 are provided. The first reinforcing rib 3 is located in the middle of the four optical fibers 2. Two optical fibers 2 on the same side of the first reinforcing rib 3 form a group, and a group of optical fibers 2 on one side is an optical communication channel. This optical cable has two optical communication channels, one of which is a spare channel, or the two optical communication channels are used together. There are two second reinforcing ribs 301, and the two second reinforcing ribs 301 are respectively located in the middle of the two groups of optical fibers 2. The first reinforcing rib 3 and the second reinforcing ribs 301 are both made of aramid fiber material, which has the significant advantage of being lightweight. Capsaicin in the capsaicin microcapsule is an active ingredient extracted from chili peppers and has strong irritation. It causes a burning sensation and pain reaction by activating the TRPV1 receptor on sensory neurons. When using the capsaicin-containing microcapsule, the dosage needs to be precisely controlled to ensure that it can effectively drive away rodents without causing excessive irritation to the human body. If the concentration of capsaicin is too high, it may cause the user to be irritated by the smell, and a proportion content of 0.5%-1.2% is just right.

[0020] As Figure 1 and Figure 2 shown, multiple pairs of notch grooves 4 are provided on the surface of the protective sleeve 1. The number of pairs of notch grooves 4 is the same as the number of optical fibers 2, and the multiple pairs of notch grooves 4 are staggered with the multiple optical fibers 2. Rubber balls 5 are adhesively connected in the notch grooves 4 of the protective sleeve 1, and the rubber balls 5 are used to prevent continuous cracking at the notch grooves 4.

[0021] In the above solution, there are four pairs of notch grooves 4, and each pair of notch grooves 4 is distributed front and back (taking the direction in Figure 1 the attachment as an example), and the notch grooves 4 are located between adjacent optical fibers 2 and adjacent second reinforcing ribs 301.

[0022] Specific working principle: During the use of this optical cable, the operator cuts the notch grooves 4, and then manually pulls the cracked protective sleeve 1 to make the cracked part of the protective sleeve 1 reach the adjacent rubber balls 5. Subsequently, the operator peels the protective sleeve 1, then connects the exposed optical fiber 2 to the corresponding interface, and then installs the protective sleeve 1 for the corresponding line erection.

[0023] After the protective sleeve 1 is installed, since the thickness of the middle part of the protective sleeve 1 is greater than the thickness of its upper and lower sides, when this optical cable is squeezed, the middle part of the protective sleeve 1 contacts the heavy object first. Under the support of the protective sleeve 1, the extrusion force on the optical fiber 2 is reduced. At the same time, during use, under the support of the first reinforcing rib 3 and the two second reinforcing ribs 301, the tensile performance and anti-bending performance of this optical cable are improved. At the same time, since the cross-section of the first reinforcing rib 3 is larger than the cross-section of the optical fiber 2, the first reinforcing rib 3 further provides support to further reduce the excessive extrusion of the heavy object on this optical cable, thereby extending the service life of the optical fiber 2.

[0024] Embodiment 2: On the basis of Embodiment 1, as Figure 1 - Figure 4 shown, it further includes: a support member 6 installed inside the protective sleeve 1. A cylindrical hole is provided in the middle of the support member 6, and the first reinforcing rib 3 is located in the cylindrical hole of the support member 6. The support member 6 is provided with two sets of grooves 601; there are two assembly members 7, which are respectively detachably installed in adjacent grooves 601, and the assembly member 7 is in contact with the protective sleeve 1. The assembly member 7 wraps the adjacent optical fibers 2 and the adjacent second reinforcing ribs 301; the support member 6 is provided with symmetrically distributed cavities 602 for providing a deformation range for the bending of the support member 6; the cross-section of the cylindrical hole on the support member 6 is larger than the cross-section of the first reinforcing rib 3. Uniformly distributed annular sleeves 603 are installed in the cylindrical hole of the support member 6. The annular sleeves 603 are made of silicone rubber and are in contact with the first reinforcing rib 3.

[0025] In the above solution, the support member 6 and the assembly member 7 are fitting parts. By assembling the first reinforcing rib 3 on the support member 6, assembling two second reinforcing ribs 301 and four optical fibers 2 on two assembly members 7, and then respectively assembling the two assembly members 7 in the adjacent grooves 601 of the support member 6, and then passing the assembled part through an existing extruder, and the existing extruder wraps a protective sleeve 1 on its outer side to complete the manufacture of this optical cable. In the above assembly process, the restriction of the support member 6 and the two assembly members 7 on the optical fibers 2 keeps the distance between adjacent two optical fibers 2 constant, greatly improving the manufacturing accuracy of this optical cable. The cross-section of the cylindrical hole on the support member 6 is larger than the cross-section of the first reinforcing rib 3 to adapt to the bending movement of the first reinforcing rib 3. The cavity 602 is used to provide the deformation range of this butterfly cable, and it forms a buffer layer.

[0026] As Figure 2 、 Figure 3 and Figure 5 shown, an elastic sleeve 8 is installed inside the assembly member 7. The elastic sleeve 8 is sleeved on the outer sides of the adjacent optical fibers 2 and the adjacent second reinforcing ribs 301; the support member 6 and the two assembly members 7 are jointly wrapped with a fiber layer 9. The fiber layer 9 is in contact with the protective sleeve 1; uniformly distributed grooves 10 are provided on the assembly member 7 for providing a movement range for the bending of the assembly member 7, and a plurality of through holes 11 are provided on the assembly member 7.

[0027] In the above solution, the elastic sleeve 8 is made of fiber paste material, which has the effect of water resistance and moisture protection. The fiber layer 9 is made of fibers and is used to improve the compressive resistance and rodent bite resistance. According to the requirements of the application scenario, a corrugated steel strip can be installed in the fiber layer 9 to further improve the safety performance of the optical cable. The groove 10 is approximately V-shaped. When the assembly 7 is bent, the deformation of the assembly 7 makes the groove 10 gradually smaller. After the left and right side surfaces of the groove 10 come into contact, the bent part of the assembly 7 is in a smooth curved shape, reducing the loss of optical signals and at the same time extending the mechanical life of the optical cable. The through hole 11 is divided into a cylindrical section and a spherical section. The through hole 11 is used to provide a deformation range for the assembly 7, so that the assembly 7 forms a buffer layer to further protect the optical fiber 2.

[0028] It should be noted that the above preferred embodiments are only used to illustrate the technical concept and features of the present invention. The purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A compression-resistant butterfly optical cable, characterized in that: The invention comprises a protective sleeve (1), wherein a plurality of optical fibers (2) are installed in the protective sleeve (1), the thickness of the axial cross section of the protective sleeve (1) ranges from 0.2 mm to 1.0 mm, the protective sleeve (1) is made of a thermoplastic polyurethane material containing capsaicin microcapsules, a first reinforcing rib (3) is installed in the middle of the protective sleeve (1), the thickness of the middle of the protective sleeve (1) is greater than the thickness of the two sides thereof, and the cross section of the first reinforcing rib (3) is greater than the cross section of the optical fiber (2), and the first reinforcing rib (3) is used to provide support to prevent the optical fiber (2) from being damaged by pressure; The surface of the protective sleeve (1) is provided with a plurality of pairs of notched grooves (4), the number of pairs of the notched grooves (4) being the same as the number of the optical fibers (2), and the plurality of pairs of the notched grooves (4) being staggered with the plurality of optical fibers (2), and uniformly distributed rubber balls (5) being adhered to the notched grooves (4) of the protective sleeve (1), and the rubber balls (5) being used to prevent continuous cracking at the notched grooves (4).

2. A compression-resistant butterfly optical cable according to claim 1, characterized in that: The mass proportion of the capsaicin microcapsules is 0.5%-1.2% of the total weight of the protective cover (1), and the particle size distribution of the microcapsules satisfies D90≤50μm.

3. The compression-resistant butterfly optical cable according to claim 1, characterized in that: The protective sleeve (1) is provided with two second reinforcing ribs (301), and the two second reinforcing ribs (301) are respectively located on both sides of the first reinforcing rib (3), and the cross section of the second reinforcing rib (301) is smaller than the cross section of the first reinforcing rib (3).

4. The compression-resistant butterfly optical cable according to claim 1, characterized in that: Also included are: A support member (6) is installed in the protective sleeve (1), a cylindrical hole is provided in the middle of the support member (6), and the first reinforcing rib (3) is located in the cylindrical hole of the support member (6), and the support member (6) is provided with two groups of grooves (601); The assembly parts (7) have two parts, which are detachably installed in adjacent grooves (601), and the assembly parts (7) are in contact with the protective sleeve (1). The assembly parts (7) wrap the adjacent optical fibers (2) and the adjacent second reinforcing ribs (301).

5. The compression-resistant butterfly optical cable according to claim 4, characterized in that: The support member (6) is provided with symmetrically distributed cavities (602), and the cavities (602) are used to provide a deformation range for the bending of the support member (6).

6. The compression-resistant butterfly optical cable according to claim 4, characterized in that: The cross section of the cylindrical hole on the support member (6) is larger than the cross section of the first reinforcing rib (3); evenly distributed annular sleeves (603) are installed in the cylindrical hole of the support member (6); the annular sleeves (603) are made of silicone rubber, and the annular sleeves (603) are in contact with the first reinforcing rib (3).

7. The compression-resistant butterfly optical cable according to claim 4, characterized in that: An elastic sleeve (8) is installed in the assembly (7), and the elastic sleeve (8) is sleeved on the outside of the adjacent optical fiber (2) and the adjacent second reinforcing rib (301).

8. The compression-resistant butterfly optical cable according to claim 4, characterized in that: The support member (6) and the two assembly members (7) are jointly wrapped with a fiber layer (9), and the fiber layer (9) is in contact with the protective sleeve (1).

9. The compression-resistant butterfly optical cable according to claim 4, characterized in that: The assembly (7) is provided with evenly distributed grooves (10), the grooves (10) being used to provide a range of motion for the bending of the assembly (7), and the assembly (7) is provided with a plurality of through holes (11).

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