Cable

Abstract

The utility model discloses a cable, and relates to the technical field of cables, and the cable comprises an optical fiber cable body; the bending form control mechanism comprises a plurality of first bulge groups which are arranged at intervals along the extension direction of the optical fiber cable body, and each first bulge group comprises a first bulge which is arranged along the circumferential direction of the optical fiber cable body; wherein the surface, away from the optical fiber cable body, of each first protrusion is provided with a first abutting part, and when the optical fiber cable body is bent to a preset angle, the first abutting parts of every two adjacent first protrusions are limited and stopped; along the radial direction of the optical fiber cable body, the cross section of at least part of the first bulge is gradually reduced. According to the invention, the problems that the production cost is increased and the operation of the cable is inconvenient due to the anti-bending mode of the cable in the prior art are effectively solved.

Description

Technical Field

[0001] This application relates to the technical field of AOC cables, and particularly to a cable. Background Art

[0002] Currently, in the context of current high-speed data transmission, AOC (Active Optical Cable) cables have become the first choice in fields such as data centers, high-performance computing, and video transmission due to their characteristics of high bandwidth, low attenuation, and electromagnetic interference resistance. However, in actual applications, especially in occasions where frequent bending or angle control is required, AOC cables face a high risk of speed loss and bending damage. This kind of damage not only affects the performance of the cable, but may also cause data transmission interruption, seriously affecting the stability and reliability of the system.

[0003] In the prior art, the protection measures for AOC cables mainly focus on the optical module connectors, and the material hardness is increased to reduce bending. However, this local reinforcement scheme not only increases the production cost when facing the natural bending or frequent operation of long-distance cables, but also makes the operation of AOC cables (active optical cables) more inconvenient and increases the labor intensity of workers. Utility Model Content

[0004] This application provides a cable to at least solve the problem that the anti-bending method of the cable in the related art increases the production cost and makes the operation of the cable inconvenient.

[0005] This application provides a cable, including: an optical fiber cable body; a bending form control mechanism, including a plurality of first protrusion groups arranged at intervals along the extension direction of the optical fiber cable body, and each first protrusion group includes first protrusions arranged along the circumferential direction of the optical fiber cable body; wherein, the surface of each first protrusion away from the optical fiber cable body has a first abutting portion, and when the optical fiber cable body is bent to a preset angle, the first abutting portions of two adjacent first protrusions are limited and blocked; along the radial direction of the optical fiber cable body, the cross-section of at least part of the first protrusions gradually decreases.

[0006] Furthermore, each first protrusion group includes one or more first protrusions. When there are multiple first protrusions, the multiple first protrusions are arranged at intervals along the circumferential direction of the optical fiber cable body.

[0007] Furthermore, the first protrusions are annular or arc-shaped; and / or, the cross-section of the first protrusions is polygonal or semi-circular.

[0008] Further, the longitudinal section of the first protrusion includes a first straight segment, a second straight segment, and a first arc segment that are connected end to end. The first arc segment is in contact with the outer peripheral surface of the optical fiber cable body, and the first straight segment and the second straight segment are arranged at an angle A; wherein, the angle A is less than or equal to 45°, and a first abutting portion is formed at the connection between the first straight segment and the second straight segment.

[0009] Further, the longitudinal section of the first protrusion includes a second arc segment and a third arc segment. The two ends of the second arc segment are respectively connected to the two ends of the third arc segment, and the second arc segment is in contact with the outer peripheral surface of the optical fiber cable body; wherein, the maximum distance r between the second arc segment and the third arc segment satisfies: 2.5 mm ≤ r ≤ 3.5 mm, and a first abutting portion is formed at the position on the second arc segment where the maximum distance from the third arc segment is located.

[0010] Further, the bending shape control mechanism further includes: a plurality of second protrusion groups arranged at intervals along the extending direction of the optical fiber cable body. Each second protrusion group includes second protrusions arranged along the circumferential direction of the optical fiber cable body, and each second protrusion has a second abutting portion on the surface away from the optical fiber cable body; wherein, at least one second protrusion is arranged between every two adjacent first protrusions, and at least one first protrusion is arranged between every two adjacent second protrusions; there is a first distance between the first abutting portion and the outer peripheral surface of the optical fiber cable body, and there is a second distance between the second abutting portion and the outer peripheral surface of the optical fiber cable body, and the first distance is different from the second distance.

[0011] Further, the first protrusion is made of one of metal, plastic, and rubber; and / or, the second protrusion is made of one of metal, plastic, and rubber.

[0012] Further, the cable further includes: a sleeve sleeved outside the optical fiber cable body and the bending shape control mechanism. A cavity is formed between the sleeve and the outer peripheral surface of the optical fiber cable body and the bending shape control mechanism; wherein, the sleeve has a pressure relief hole communicated with the cavity.

[0013] Further, the first abutting portion is bonded to the inner surface of the sleeve.

[0014] Further, the cable is an active optical cable.

[0015] When the technical solution of the present application is applied and the cable is bent, when the optical fiber cable body is bent to a preset angle, the first abutting portions of two adjacent first protrusions will contact and stop each other, thereby restricting further bending of the cable, avoiding internal optical fiber damage caused by an excessive bending angle, improving the reliability and lifespan of the cable, and further solving the problem in the related art that the anti-bending method of the cable increases the production cost and causes inconvenience in cable operation. At the same time, since the cross-section of the first protrusion gradually decreases along the radial direction of the cable, the cable can adaptively adjust the position of the first abutting portion during the bending process, thereby achieving a smoother and more natural bending shape and reducing friction and resistance during the bending process.

[0016] Compared with reducing bending by increasing material hardness in the prior art, the cable in the present application uses a built-in bending shape control mechanism to control the bending degree of the cable, which is more advantageous in terms of production cost and does not affect the normal operation of the cable by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a cross-sectional view of the first embodiment of the cable provided by the embodiment of the present application;

[0019] Figure 2 It is a cross-sectional view of the second embodiment of the cable provided by the embodiment of the present application.

[0020] Among them, the above-mentioned drawings include the following reference numerals:

[0021] 10. Optical fiber cable body;

[0022] 20. First protrusion group; 21. First protrusion; 211. First abutting portion; 212. First straight segment; 213. Second straight segment; 214. First arc segment; 215. Second arc segment; 216. Third arc segment;

[0023] 30. Sleeve; 31. Pressure relief hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0025] It should be noted that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. The terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. The terms "parallel", "perpendicular", and "equal" include the described situations and situations similar to the described situations, and the range of the similar situations is within the acceptable deviation range, where the acceptable deviation range is determined by those of ordinary skill in the art considering the measurement being discussed and the errors related to the measurement of a specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and approximate parallel, and the acceptable deviation range of approximate parallel can be, for example, within 5° deviation; "perpendicular" includes absolute perpendicular and approximate perpendicular, and the acceptable deviation range of approximate perpendicular can also be, for example, within 5° deviation. "Equal" includes absolute equality and approximate equality, and the acceptable deviation range of approximate equality can be, for example, that the difference between the two equal ones is less than or equal to 5% of any one of them. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood in specific situations.

[0026] In order to enable those skilled in the art of the present technology to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] In order to solve the problems in the related art that the anti-bending method of the cable increases the production cost and causes inconvenience in the operation of the cable, the present application provides a cable.

[0028] Embodiment 1

[0029] As Figure 1As shown in the figure, the present application provides a cable, including an optical fiber cable body 10 and a bending shape control mechanism. The bending shape control mechanism includes a plurality of first protrusion groups 20 arranged at intervals along the extending direction of the optical fiber cable body 10, and each first protrusion group 20 includes first protrusions 21 arranged along the circumferential direction of the optical fiber cable body 10. Among them, the surface of each first protrusion 21 away from the optical fiber cable body 10 has a first abutting portion 211, and when the optical fiber cable body 10 is bent to a preset angle, the first abutting portions 211 of two adjacent first protrusions 21 are limited and blocked; along the radial direction of the optical fiber cable body 10, the cross-section of at least part of the first protrusions 21 gradually decreases.

[0030] Applying the technical solution of this embodiment, when the cable is bent, when the optical fiber cable body 10 is bent to a preset angle, the first abutting portions 211 of two adjacent first protrusions 21 will contact and block each other, thereby restricting further bending of the cable, avoiding internal optical fiber damage caused by an excessive bending angle, improving the reliability and lifespan of the cable, and thus solving the problem in the related art that the anti-bending method of the cable increases the production cost and causes inconvenient operation of the cable. At the same time, since the cross-section of the first protrusion 21 gradually decreases along the radial direction of the cable, the cable can adaptively adjust the position of the first abutting portion 211 during the bending process, thereby achieving a smoother and more natural bending shape and reducing friction and resistance during the bending process.

[0031] Compared with reducing bending by increasing material hardness in the prior art, the cable in this embodiment uses a built-in bending shape control mechanism to control the bending degree of the cable, which is more advantageous in terms of production cost and does not affect the normal operation of the staff on the cable.

[0032] Optionally, each first protrusion group 20 includes one or more first protrusions 21. When there are multiple first protrusions 21, the multiple first protrusions 21 are arranged at intervals along the circumferential direction of the optical fiber cable body 10. In this way, when there are multiple first protrusions 21 in each first protrusion group 20, the multiple first protrusions 21 are distributed along the circumferential direction of the optical fiber cable body 10, which can protect the cable from all directions, ensuring that there is sufficient structural support and restriction no matter from which direction the cable is subjected to a bending force, preventing damage to the internal optical fiber, and thus improving the overall protection performance of the cable. At the same time, the multiple first protrusions 21 arranged in the circumferential direction can evenly distribute the stress during bending around the cable body, avoiding the problem of excessive single-point stress and reducing the risk of local stress concentration, further enhancing the anti-bending ability and durability of the cable.

[0033] Optionally, the first protrusion 21 is annular or arc-shaped; and / or, the cross-section of the first protrusion 21 is polygonal or semi-circular. In this way, the annular or arc-shaped first protrusion 21 can serve as a path guide when the cable is bent, enabling the cable to bend naturally along the shape of the first protrusion 21 when bent, thereby avoiding the generation of sharp bending points, reducing stress concentration in the internal optical fiber, and protecting the optical fiber from damage. At the same time, when the cross-section of the first protrusion 21 is polygonal, the polygonal cross-section can provide more contact points when the cable is bent, thus more evenly dispersing stress, reducing stress concentration, and protecting the internal optical fiber from damage; when the cross-section of the first protrusion 21 is semi-circular, the semi-circular cross-section can provide a smoother transition when the cable is bent, reducing the sharp changes in the internal optical fiber and wires during the bending process, thereby reducing losses and distortions in signal transmission.

[0034] In this embodiment, the first protrusion 21 is annular, and the cross-section of the first protrusion 21 is polygonal. In this way, the annular first protrusion 21 can provide 360° protection. No matter which direction the cable is bent from, effective support and limitation can be obtained, thereby enhancing the anti-bending ability of the cable in a specific direction. At the same time, the polygonal cross-section provides more stable support for the cable. Especially when the cable is in a static bending state, the polygonal structure can effectively prevent further deformation of the cable under the action of gravity. In addition, when the polygonal first protrusion 21 is subjected to pressure laterally, its edges can provide additional support force, thereby increasing the overall compressive strength of the cable and reducing physical damage in a complex environment.

[0035] In other embodiments not shown in the drawings, the first protrusion 21 is arc-shaped.

[0036] In other embodiments not shown in the drawings, the cross-section of the first protrusion 21 is semi-circular. In this way, the semi-circular cross-section can provide a smoother transition when the cable is bent, reducing the sharp changes in the internal optical fiber and wires during the bending process, thereby reducing losses and distortions in signal transmission. At the same time, the first protrusion with a semi-circular cross-section can better adapt to the dynamic bending requirements of the cable. Whether it is a slight bend or a large arc, it can provide appropriate support without overly restricting the flexibility of the cable.

[0037] In this embodiment, the longitudinal section of the first protrusion 21 includes a first straight segment 212, a second straight segment 213, and a first arc segment 214 that are connected end to end. The first arc segment 214 is in contact with the outer peripheral surface of the optical fiber cable body 10, and an angle A is formed between the first straight segment 212 and the second straight segment 213; wherein, the angle A is less than or equal to 45°, and a first abutting portion 211 is formed at the connection between the first straight segment 212 and the second straight segment 213. In this way, when the cable is bent, the first abutting portion 211 can limit the bending angle not to exceed a preset value, avoiding damage to the optical fiber inside the cable caused by excessive bending force. The design that the angle A between the first straight segment 212 and the second straight segment 213 is less than or equal to 45° can effectively direct and disperse the externally applied bending stress, reducing the stress concentration phenomenon, thereby protecting the optical fiber from damage. At the same time, the first arc segment 214 is in contact with the outer peripheral surface of the optical fiber cable body 10, so that the first protrusion 21 can tightly wrap the optical fiber cable body 10, thereby providing better anti-extrusion protection. During the bending process, the first arc segment 214 can follow the shape change of the cable, reducing the damage caused by hard collision, and at the same time enhancing the rigidity of the cable to prevent excessive bending.

[0038] In this embodiment, the angle A is 45° to precisely control the maximum bending angle of the cable and avoid exceeding the safe bending range of the optical fiber.

[0039] Optionally, the bending form control mechanism further includes a plurality of second protrusion groups arranged at intervals along the extending direction of the optical fiber cable body 10. Each second protrusion group includes a second protrusion arranged along the circumferential direction of the optical fiber cable body 10, and the surface of each second protrusion away from the optical fiber cable body 10 has a second abutting portion. Among them, at least one second protrusion is arranged between every two adjacent first protrusions 21, and at least one first protrusion 21 is arranged between every two adjacent second protrusions; there is a first distance between the first abutting portion 211 and the outer peripheral surface of the optical fiber cable body 10, and there is a second distance between the second abutting portion and the outer peripheral surface of the optical fiber cable body 10, and the first distance is different from the second distance. In this way, at least one second protrusion is arranged between every two adjacent first protrusions 21, and at least one first protrusion 21 is arranged between every two adjacent second protrusions. Then, throughout the length of the cable, through the staggered arrangement of the first protrusion group 20 and the second protrusion group, a multiple bending control mechanism is formed, which can precisely control the bending form of the cable, prevent excessive bending at any position, and ensure the safety of the optical fiber. At the same time, since the settings of the first protrusion 21 and the second protrusion are independent and complementary to each other, the bending form control mechanism can adapt to the bending requirements in different directions and angles. No matter how the cable is arranged, the first protrusion 21 and the second protrusion can provide appropriate support according to actual needs, enhancing the adaptability of the cable and the flexibility of cabling.

[0040] Specifically, the first distance is different from the second distance to ensure that the protection and support effects provided by the first protrusion 21 and the second protrusion to the cable are different. The above differential design helps to make the stress inside the cable more evenly distributed under external forces, avoiding damage to the optical fiber caused by excessive local stress.

[0041] Optionally, the first protrusion 21 is made of one of metal, plastic, and rubber; and / or the second protrusion is made of one of metal, plastic, and rubber. In this way, the protrusion made of metal has high mechanical strength and can provide effective support and protection to prevent the cable from being physically damaged externally when bent; the protrusion made of plastic is lighter and has lower cost, which helps with the lightweight design of the cable, facilitates wiring and transportation, and at the same time reduces production costs; the protrusion made of rubber has elasticity to absorb vibration and impact, reducing the damage of these physical forces to the internal structure of the cable.

[0042] Specifically, choosing metal, plastic, or rubber as the material of the protrusion can achieve different technical effects according to different application requirements and environmental conditions. In this way, the metal material is suitable for occasions that require high strength, high thermal conductivity, and electromagnetic shielding; the plastic material is more suitable for applications that pursue lightweight, cost-effectiveness, and good insulation performance; the rubber material has advantages in anti-vibration, anti-impact, and providing good wear protection. Therefore, reasonably selecting the material of the protrusion can significantly improve the comprehensive performance of the cable and meet the usage requirements in specific scenarios.

[0043] As Figure 1 shown, the cable further includes a sleeve 30. The sleeve 30 is sleeved outside the optical fiber cable body 10 and the bending shape control mechanism. A cavity is formed between the sleeve 30 and the outer peripheral surface of the optical fiber cable body 10 and the bending shape control mechanism. In this way, the sleeve 30 serves as an outer protection, which can provide additional mechanical protection to prevent the cable from being physically impacted and worn externally, further ensuring the integrity and safety of the cable. At the same time, the above setting of the cavity can play a role in stress buffering when the cable is bent or pulled. The material or air in the cavity can absorb part of the stress, reducing the pressure directly transmitted to the optical fiber cable body 10 and the bending shape control mechanism and avoiding damage to the internal structure.

[0044] Optionally, the sleeve 30 has a pressure relief hole 31 communicating with the cavity. In this way, when the cable is externally bent or squeezed, the air pressure or material pressure in the cavity will increase. The above setting of the pressure relief hole 31 can release these pressures in time, avoiding damage to the optical fiber cable body 10 and the bending shape control mechanism caused by the accumulation of internal pressure in the cavity. Furthermore, it helps to reduce internal stress concentration when the cable encounters sudden bending or squeezing and protects the integrity of the internal structure of the cable.

[0045] Optionally, the first abutting portion 211 is adhesively bonded to the inner surface of the sleeve 30.

[0046] In this embodiment, the cable is an active optical cable, that is, the cable is an AOC cable.

[0047] Embodiment Two

[0048] The difference between the cable in Embodiment Two and that in Embodiment One lies in that the shape of the longitudinal section of the first protrusion 21 is different.

[0049] As Figure 2 shown, the longitudinal section of the first protrusion 21 includes a second arc segment 215 and a third arc segment 216. The two ends of the second arc segment 215 are respectively connected to the two ends of the third arc segment 216, and the second arc segment 215 is in contact with the outer peripheral surface of the optical fiber cable body 10. Among them, the maximum distance r between the second arc segment 215 and the third arc segment 216 satisfies: 2.5 mm ≤ r ≤ 3.5 mm, and a first abutting portion 211 is formed at the position on the second arc segment 215 where the maximum distance from the third arc segment 216 is located. In this way, the contact between the second arc segment 215 and the outer peripheral surface of the optical fiber cable body 10 ensures that when the cable is bent, the first protrusion 21 can flow along the natural curve of the cable, thereby effectively controlling the bending radius and shape of the cable and preventing the optical fiber from being damaged due to excessive bending. At the same time, the composite design of the second arc segment 215 and the third arc segment 216 can evenly disperse the stress when the cable is bent, avoid stress concentration, and thus extend the service life of the cable.

[0050] Specifically, the first abutting portion 211 formed at the position on the second arc segment 215 where the maximum distance from the third arc segment 216 is located, as the key contact point when the cable is bent, can accurately control the stop of the cable when the bending reaches the critical angle, avoid excessive bending of the cable, and ensure that the optical fiber is not damaged. At the same time, setting the maximum distance r between the second arc segment 215 and the third arc segment 216 in the range of 2.5 mm to 3.5 mm can not only ensure the bending control effect of the first protrusion 21, but also prevent it from overly occupying the space of the cable or adding too much extra weight.

[0051] In this embodiment, the maximum distance r between the second arc segment 215 and the third arc segment 216 is 3.0 mm.

[0052] It should be noted that the value of the maximum distance r between the second arc segment 215 and the third arc segment 216 is not limited to this, and can be adjusted according to the working conditions and usage requirements. Optionally, the maximum distance r between the second arc segment 215 and the third arc segment 216 is 2.6 mm, or 2.8 mm, or 3.2 mm, or 3.4 mm.

[0053] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0054] When the cable is bent, when the optical fiber cable body is bent to a preset angle, the first abutting portions of two adjacent first protrusions will come into contact with each other and stop, thereby restricting further bending of the cable, avoiding internal optical fiber damage caused by excessive bending angles, improving the reliability and lifespan of the cable, and thus solving the problem in the related art that the anti-bending method of the cable increases production costs and causes inconvenience in cable operation. At the same time, since the cross-section of the first protrusion gradually decreases along the radial direction of the cable, the cable can adaptively adjust the position of the first abutting portion during the bending process, thereby achieving a smoother and more natural bending shape and reducing friction and resistance during the bending process.

[0055] Compared with reducing bending by increasing material hardness in the prior art, the cable in this application uses a built-in bending shape control mechanism to control the bending degree of the cable, and thus has more advantages in terms of production costs and does not affect the normal operation of the staff on the cable.

[0056] Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements and modifications can still be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A cable, characterized in that, Comprising: An optical fiber cable body (10); A bending shape control mechanism, including a plurality of first protrusion groups (20) arranged at intervals along the extending direction of the optical fiber cable body (10), each of the first protrusion groups (20) including first protrusions (21) arranged along the circumferential direction of the optical fiber cable body (10); Wherein, the surface of each of the first protrusions (21) away from the optical fiber cable body (10) has a first abutting portion (211), when the optical fiber cable body (10) is bent to a preset angle, the first abutting portions (211) of two adjacent first protrusions (21) are limited and blocked; along the radial direction of the optical fiber cable body (10), the cross-section of at least part of the first protrusions (21) gradually decreases.

2. The cable according to claim 1, characterized in that, Each of the first protrusion groups (20) includes one or more first protrusions (21), when the first protrusions (21) are multiple, the multiple first protrusions (21) are arranged at intervals along the circumferential direction of the optical fiber cable body (10).

3. The cable according to claim 1, characterized in that, The first protrusions (21) are annular or arc-shaped; and / or, the cross-section of the first protrusions (21) is polygonal or semi-circular.

4. The cable according to claim 1, characterized in that, The longitudinal section of the first protrusion (21) includes a first straight line segment (212), a second straight line segment (213) and a first arc segment (214) connected end to end, the first arc segment (214) is in contact with the outer peripheral surface of the optical fiber cable body (10), and the first straight line segment (212) and the second straight line segment (213) are arranged at an angle A; wherein, the angle A is less than or equal to 45°, and the connection between the first straight line segment (212) and the second straight line segment (213) forms the first abutting portion (211).

5. The cable according to claim 1, characterized in that, The longitudinal section of the first protrusion (21) includes a second arc segment (215) and a third arc segment (216), the two ends of the second arc segment (215) are respectively connected to the two ends of the third arc segment (216), and the second arc segment (215) is in contact with the outer peripheral surface of the optical fiber cable body (10); wherein, the maximum distance r between the second arc segment (215) and the third arc segment (216) satisfies: 2.5 mm ≤ r ≤ 3.5 mm, and the first abutting portion (211) is formed at the position on the second arc segment (215) where the maximum distance from the third arc segment (216) is located.

6. The cable according to claim 1, wherein The bending shape control mechanism further includes: A plurality of second protrusion groups arranged at intervals along the extending direction of the optical fiber cable body (10), each of the second protrusion groups includes second protrusions arranged along the circumferential direction of the optical fiber cable body (10), and the surface of each of the second protrusions away from the optical fiber cable body (10) has a second abutting portion; Among them, at least one second protrusion is provided between every two adjacent first protrusions (21), and at least one first protrusion (21) is provided between every two adjacent second protrusions; there is a first distance between the first abutting portion (211) and the outer peripheral surface of the optical fiber cable body (10), and there is a second distance between the second abutting portion and the outer peripheral surface of the optical fiber cable body (10), and the first distance is different from the second distance.

7. The cable according to claim 6, wherein, The first protrusion (21) is made of one of metal, plastic, and rubber; and / or, the second protrusion is made of one of metal, plastic, and rubber.

8. The cable according to claim 1, characterized in that, The cable further includes: A sleeve body (30) sleeved outside the optical fiber cable body (10) and the bending form control mechanism, and a cavity is formed around between the sleeve body (30), the outer peripheral surface of the optical fiber cable body (10), and the bending form control mechanism; Among them, the sleeve body (30) has a pressure relief hole (31) communicated with the cavity.

9. The cable according to claim 8, characterized in that, The first abutting portion (211) is adhesively bonded to the inner surface of the sleeve body (30).

10. The cable according to claim 1, characterized in that, The cable is an active optical cable.

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