A pressure-resistant butterfly cable

Abstract

The present application relates to the field of optical communication technology, especially to a pressure-resistant butterfly optical cable, which comprises 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 0.2mm to 1.0mm, the protective sleeve is made of thermoplastic polyurethane material containing capsaicin microcapsules, the protective sleeve is installed with a first reinforcing rib, the thickness of the middle part of the protective sleeve is greater than that of the two sides, and the cross section of the first reinforcing rib is greater than that of the optical fiber, and the first reinforcing rib is used to provide support. Through the support of the first reinforcing rib, the optical fiber is prevented from being directly pressed, thereby improving the protection of the optical fiber and prolonging its service life; by adding capsaicin microcapsules to the raw material of the protective sleeve, the strong stimulation of capsaicin to the olfactory and gustatory systems of rodents is utilized to avoid the re-contacting or biting of the optical cable, thereby prolonging the service life of the optical cable.

Description

Technical Field

[0001] This invention relates to the field of optical communication technology, and in particular to a pressure-resistant butterfly-shaped optical cable. Background Technology

[0002] With the widespread adoption of fiber-to-the-home (FTTH) technology, butterfly-shaped optical cables have become a key component in indoor and outdoor optical cabling due to their flat structure, high flexibility, and low cost. However, in complex environments, especially during duct installations, wall mounting, or soil burial, the flat cross-section design of butterfly-shaped cables makes them prone to localized stress concentration. In such cases, the sheath undergoes plastic deformation under high stress, leading to micro-bending loss in the fiber core. This micro-bending loss significantly reduces signal transmission quality, manifesting as signal attenuation and increased bit error rate. In extreme cases, sustained high stress can cause fiber core breakage, resulting in communication interruptions and severely impacting network reliability and stability. Furthermore, in hot and humid climates, butterfly-shaped optical cables face significant risks of biological attack. Termites and rodents can bite into the sheath, increasing the sheath breakage rate. This biting not only directly affects the stability of optical signal transmission but also shortens the cable's lifespan. Summary of the Invention

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

[0004] The technical solution is: a pressure-resistant butterfly-shaped optical cable, including a protective sleeve, in which multiple optical fibers are installed. The thickness of the axial cross-section of the protective sleeve ranges from 0.2mm to 1.0mm. The protective sleeve is made of thermoplastic polyurethane material containing capsaicin microcapsules. A first reinforcing rib is installed in the middle of the protective sleeve. The thickness of the middle part of the protective sleeve is greater than the thickness of its two sides, 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 the optical fiber from being damaged by pressure.

[0005] Preferably, the capsaicin microcapsules account for 0.5%-1.2% of the total weight of the protective sleeve, and the microcapsule particle size distribution satisfies D90≤50μm.

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

[0007] Preferably, the surface of the protective sleeve is provided with multiple pairs of notches, the number of notches being the same as the number of optical fibers, and the multiple pairs of notches intersect with multiple optical fibers. Uniformly distributed rubber balls are adhered in the notches of the protective sleeve to prevent continuous cracking at the notches.

[0008] Preferably, it further includes: a support member installed inside the protective sleeve, the support member having a cylindrical hole in the middle and the first reinforcing rib located inside the cylindrical hole of the support member, the support member having two sets of grooves; and an assembly member having two parts, which are detachably installed in adjacent grooves, and the assembly member is in contact with the protective sleeve, the assembly member wrapping the adjacent optical fiber and the adjacent second reinforcing rib.

[0009] Preferably, the support member is provided with symmetrically distributed cavities, which are used to provide a range of deformation 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, and a uniformly distributed annular sleeve is installed in the cylindrical hole of the support member. The annular sleeve is made of silicone rubber and is in contact with the first reinforcing rib.

[0011] Preferably, an elastic sleeve is installed inside the assembly, the elastic sleeve being fitted over the outer side of the adjacent optical fiber and the adjacent second reinforcing rib.

[0012] Preferably, the support member and the two assembly members are jointly wrapped with a fiber layer, which is in contact with the protective sleeve.

[0013] Preferably, the assembly has uniformly distributed grooves that provide a range of motion for bending, and the assembly has multiple through holes.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention reduces the compressive force on the optical fiber through the support of the first reinforcing rib, thereby improving the protection of the optical fiber and extending its service life; by adding capsaicin microcapsules to the raw materials through the protective sleeve, the strong stimulation of the rodent's olfactory and gustatory systems by capsaicin is used to prevent re-contact or biting of the optical cable, thereby extending the service life of the optical cable; the rubber ball prevents excessive tearing of the protective sleeve; the support component, assembly component, elastic sleeve, and fiber layer form a multi-layered protection, improving the tensile strength of the optical cable and further extending the service life of the optical fiber; the limiting support of the groove on the assembly component ensures the bending deformation range of the optical cable, preventing damage to the optical fiber due to excessive bending. Attached Figure Description

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

[0016] The markings in the attached diagram 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 component, 601. Groove, 602. Cavity, 603. Annular sleeve, 7. Assembly component, 8. Elastic sleeve, 9. Fiber layer, 10. Groove, 11. Through hole. Detailed Implementation

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0018] Example 1: A pressure-resistant butterfly optical cable, such as Figure 1 and Figure 2 As shown, the device includes a protective sleeve 1, within which multiple optical fibers 2 are installed. 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 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 part of the protective sleeve 1 is greater than the thickness on both 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 percentage of the capsaicin microcapsules is 0.5%-1.2% of the total weight of the protective sleeve 1, and the microcapsule particle size distribution satisfies D90≤50μm. The protective sleeve 1 is equipped with two second reinforcing ribs 301, which are 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 scheme, four optical fibers 2 are provided, with the first reinforcing rib 3 located in the middle of the four optical fibers 2. Two optical fibers 2 located on the same side of the first reinforcing rib 3 form a group, and a group of optical fibers 2 on one side forms an optical communication channel. This optical cable has two optical communication channels, one of which is a spare channel, or both optical communication channels can be used together. There are two second reinforcing ribs 301, with the two second reinforcing ribs 301 located in the middle of the two groups of optical fibers 2 respectively. Both the first reinforcing rib 3 and the second reinforcing rib 301 are made of aramid fiber, which has the significant advantage of being lightweight. Capsaicin in capsaicin microcapsules is an active ingredient extracted from chili peppers and has a strong irritant effect. It causes a burning sensation and pain response by activating TRPV1 receptors on sensory neurons. When using capsaicin-containing microcapsules, the dosage needs to be precisely controlled to ensure that it can effectively repel rodents without causing excessive stimulation to the human body. If the concentration of capsaicin is too high, it may cause odor irritation to the user. The content of 0.5%-1.2% is just right.

[0020] like Figure 1 and Figure 2 As shown, the surface of the protective sleeve 1 is provided with multiple pairs of notches 4. The number of notches 4 is the same as the number of optical fibers 2, and the multiple pairs of notches 4 are interwoven with multiple optical fibers 2. Rubber balls 5 are evenly distributed and adhered in the notches 4 of the protective sleeve 1. The rubber balls 5 are used to prevent continuous cracking at the notches 4.

[0021] In the above scheme, there are four pairs of notch grooves 4, with each pair of notch grooves 4 distributed front and back (see attached diagram). Figure 1 (Taking the direction in the middle as an example), and the notch 4 is located between the adjacent optical fiber 2 and the adjacent second reinforcing rib 301.

[0022] Specific working principle: During the use of this optical cable, the operator cuts the notch 4, then manually pulls the cracked protective sleeve 1 so that the crack in the protective sleeve 1 reaches the adjacent rubber ball 5. Then the operator strips the protective sleeve 1, and then connects the exposed optical fiber 2 to the corresponding interface. Subsequently, the protective sleeve 1 is used for the corresponding line installation.

[0023] After the protective sleeve 1 is installed, because the thickness of the middle part of the protective sleeve 1 is greater than the thickness of its upper and lower sides, when the optical cable is compressed, the middle part of the protective sleeve 1 contacts the heavy object first. Under the support of the protective sleeve 1, the compressive 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 and bending resistance of the optical cable is improved. 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, further reducing the excessive compression of the optical cable by the heavy object, thereby extending the service life of the optical fiber 2.

[0024] Example 2: Based on Example 1, such as Figure 1 - Figure 4 As shown, it also includes: a support member 6, installed inside the protective sleeve 1, with a cylindrical hole in the middle of the support member 6 and the first reinforcing rib 3 located inside the cylindrical hole of the support member 6; the support member 6 is provided with two sets of grooves 601; an assembly member 7, having two, which are detachably installed in adjacent grooves 601, and the assembly member 7 contacts the protective sleeve 1, the assembly member 7 wraps the adjacent optical fiber 2 and the adjacent second reinforcing rib 301; the support member 6 is provided with symmetrically distributed cavities 602, the cavities 602 are used to provide 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, and 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 the annular sleeves 603 are in contact with the first reinforcing rib 3.

[0025] In the above scheme, the support member 6 and the assembly member 7 are assembly parts. The first reinforcing rib 3 is assembled on the support member 6, and the two second reinforcing ribs 301 and four optical fibers 2 are assembled on the two assembly members 7. Subsequently, the two assembly members 7 are respectively assembled in the adjacent grooves 601 of the support member 6. The assembled part is then passed through an existing extruder, which is wrapped with a protective sleeve 1 on its outside to complete the manufacturing of the optical cable. During the above assembly process, the support member 6 and the two assembly members 7 restrict the optical fibers 2, so that the distance between two adjacent optical fibers 2 remains constant, which greatly improves the manufacturing accuracy of the 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 accommodate the bending activity of the first reinforcing rib 3. The cavity 602 is used to provide the deformation range of the butterfly cable and forms a buffer layer.

[0026] like Figure 2 , Figure 3 and Figure 5 As shown, an elastic sleeve 8 is installed inside the assembly 7, and the elastic sleeve 8 is fitted on the outside of the adjacent optical fiber 2 and the adjacent second reinforcing rib 301; the support 6 and the two assemblies 7 are jointly wrapped with a fiber layer 9, and the fiber layer 9 is in contact with the protective sleeve 1; the assembly 7 is provided with uniformly distributed grooves 10, which are used to provide a range of motion for the bending of the assembly 7, and the assembly 7 is provided with multiple through holes 11.

[0027] In the above scheme, the elastic sleeve 8 is made of fiber paste, which has the effect of water resistance and moisture resistance. The fiber layer 9 is made of fiber braiding, which is used to improve the pressure resistance and rodent bite resistance. Corrugated steel strips can be installed in the fiber layer 9 according to the needs of the application scenario 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 causes the groove 10 to gradually become smaller. After the left and right sides of the groove 10 come into contact, the bending part of the assembly 7 is rounded, reducing the loss of optical signal and extending the mechanical life of the optical cable. The through hole 11 is divided into cylindrical section and spherical section. The through hole 11 is used to provide the deformation range of 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 merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A pressure-resistant butterfly-shaped optical cable, characterized in that, The device includes a protective sleeve (1) in which multiple optical fibers (2) are installed. 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 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 part 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 greater than the cross-section of the optical fiber (2). The first reinforcing rib (3) is used to provide support and prevent the optical fiber (2) from being damaged by pressure. The protective sleeve (1) has multiple pairs of notches (4) on its surface. The number of notches (4) is the same as the number of optical fibers (2). The multiple pairs of notches (4) are interlaced with multiple optical fibers (2). The notches (4) of the protective sleeve (1) are glued with evenly distributed rubber balls (5). The rubber balls (5) are used to prevent continuous cracking at the notches (4). The protective sleeve (1) is equipped with two second reinforcing ribs (301), and the two second reinforcing ribs (301) are 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); It also includes: The support member (6) is installed inside the protective sleeve (1). The support member (6) has a cylindrical hole in the middle and the first reinforcing rib (3) is located in the cylindrical hole of the support member (6). The support member (6) has two sets of grooves (601). The assembly (7) has two parts, which are detachably installed in adjacent grooves (601) and the assembly (7) contacts the protective sleeve (1). The assembly (7) wraps the adjacent optical fiber (2) and the adjacent second reinforcing rib (301).

2. The pressure-resistant butterfly optical cable according to claim 1, characterized in that, The capsaicin microcapsules account for 0.5%-1.2% of the total weight of the protective sleeve (1), and the microcapsule particle size distribution satisfies D90≤50μm.

3. The pressure-resistant butterfly optical cable according to claim 2, characterized in that, The support member (6) is provided with symmetrically distributed cavities (602), which are used to provide a range of deformation for the bending of the support member (6).

4. The pressure-resistant butterfly optical cable according to claim 3, 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). A uniformly distributed annular sleeve (603) is installed in the cylindrical hole of the support member (6). The annular sleeve (603) is made of silicone rubber and is in contact with the first reinforcing rib (3).

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

6. The pressure-resistant butterfly optical cable according to claim 5, characterized in that, The support (6) and the two assemblies (7) are together wrapped with a fiber layer (9), which is in contact with the protective sleeve (1).

7. A pressure-resistant butterfly optical cable according to claim 6, characterized in that, The assembly (7) is provided with uniformly distributed grooves (10), which are used to provide a range of motion for bending of the assembly (7), and the assembly (7) is provided with multiple through holes (11).

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