Optical cable fixing device

Abstract

The utility model provides an optical cable fixing device. The optical cable fixing device comprises a first arc-shaped metal sheet, a second arc-shaped metal sheet and an end closed-loop assembly, the end closed-loop assembly comprises a first connecting piece and a second connecting piece; the first connecting piece is arranged at one end of the first arc-shaped metal sheet, and the second connecting piece is arranged at one end of the second arc-shaped metal sheet; the first arc-shaped metal sheet is provided with protruding parts, the second arc-shaped metal sheet is provided with clamping hole parts, the number of one of the protruding parts and the clamping hole parts is at least one, the number of the other one of the protruding parts and the clamping hole parts is at least two, and the protruding parts and the clamping hole parts are connected in a clamped mode. The first connecting piece and the second connecting piece are connected to form a holding closed ring between the first arc-shaped metal sheet and the second arc-shaped metal sheet; the protruding part is connected with the different clamping hole parts in a clamped mode so that the inner diameter of the holding closed ring can be adjusted. The problem of unstable fixation of the optical cable can be solved.

Description

Technical Field

[0001] The present application relates to the field of clamp technology, and in particular to an optical cable fixing device. Background Art

[0002] An optical cable fixing device is a component used to fix an optical cable and is widely used in various optical cable laying situations.

[0003] Optical cables are used for real-time information monitoring and transmission, and come in various types. For example, temperature-sensing optical cables are used for temperature monitoring. When laying optical cables, they are typically secured to their intended target using a fixing device, typically a plastic cable tie.

[0004] Therefore, plastic cable ties may be affected by the external environment during long-term use and may be prone to weathering, breaking, or falling off, resulting in unstable fixation of the optical cable. Utility Model Content

[0005] The present application provides an optical cable fixing device, which can solve the problem of unstable fixing of optical cables.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] The present application provides an optical cable fixing device, comprising a first arc-shaped metal sheet, a second arc-shaped metal sheet, and an end closed loop assembly;

[0008] The end closed loop assembly includes a first connecting member and a second connecting member;

[0009] The first connecting member is provided at one end of the first arc-shaped metal sheet, and the second connecting member is provided at one end of the second arc-shaped metal sheet;

[0010] The first arc-shaped metal sheet is provided with a protrusion, and the second arc-shaped metal sheet is provided with a latching hole. The number of one of the protrusion and the latching hole is at least one, and the number of the other is at least two. The protrusion and the latching hole are engaged with each other.

[0011] The first connecting member and the second connecting member are connected to form a closed loop between the first arc-shaped metal sheet and the second arc-shaped metal sheet;

[0012] The protrusion is engaged with different holes to adjust the inner diameter of the clamping ring 400 .

[0013] In a possible implementation, the optical cable fixing device provided by the present application, the protrusion is a polygonal protrusion, and the clamping hole is a polygonal hole corresponding to the protrusion;

[0014] Alternatively, the protrusion is a spherical protrusion, and the clamping hole is a circular hole corresponding to the protrusion.

[0015] In a possible implementation, in the optical cable fixing device provided in the present application, the number of the protrusions and the number of the locking holes are at least three, respectively.

[0016] In a possible implementation, the optical cable fixing device provided in the present application further includes a rubber coating.

[0017] The rubber-coated strip comprises at least a covering portion and two sleeve portions, the two sleeve portions are relatively arranged on both sides of the covering portion, the covering portion is buckled on the outer wall of the clamping closed loop, and the two sleeve portions are buckled on the two opposite side walls of the clamping closed loop.

[0018] In a possible implementation, in the optical cable fixing device provided in the present application, the first connecting member is a buckle, the second connecting member is a buckle platform, the buckle platform is provided with an opening, and the buckle is buckled in the opening.

[0019] In a possible implementation, in the optical cable fixing device provided in the present application, the buckle platform is provided on the outer side wall of the clamping closed loop, and the opening is provided on a side of the buckle platform away from the clamping closed loop.

[0020] In a possible implementation, the optical cable fixing device provided in the present application, the end closed-loop assembly further includes a sealing member, wherein the sealing member is rotatably disposed on one end of the first arc-shaped metal sheet or the second arc-shaped metal sheet;

[0021] After the buckle is buckled in the opening, the sealing member rotates toward the opening and blocks the opening to prevent the buckle from being separated from the opening.

[0022] In a possible implementation, in the optical cable fixing device provided in the present application, the sealing member is provided with a buckle groove, and the sealing member is rotated toward the opening so that the buckle groove buckles with the opening of the buckle platform.

[0023] In one possible implementation, the optical cable fixing device provided in the present application, the sealing member includes a first straight plate and a second straight plate, one end of the first straight plate is rotatably connected to the first curved metal sheet or one end of the second curved metal sheet, one end of the second straight plate is connected to the other end of the first straight plate, and the second straight plate is arranged at an angle to the first straight plate 331;

[0024] The buckle groove is at least provided on the first straight plate. When the buckle groove is buckled on the buckle platform, the second straight plate buckles inward toward the middle of the clamping closed loop so that the second straight plate fits against the outer wall of the first curved metal sheet or the second curved metal sheet.

[0025] In one possible implementation, in the optical cable fixing device provided in the present application, the width of the first curved metal sheet is 5 mm to 15 mm, the length of the first curved metal sheet is 50 mm to 70 mm, and the thickness of the first curved metal sheet is 0.4 mm to 0.8 mm;

[0026] The width of the second arc-shaped metal sheet is 5 mm-15 mm, the length of the second arc-shaped metal sheet is 50 mm-70 mm, and the thickness of the second arc-shaped metal sheet is 0.4 mm-0.8 mm.

[0027] The present application provides an optical cable fixing device, comprising a first arc-shaped metal sheet, a second arc-shaped metal sheet and an end closed loop assembly; the end closed loop assembly comprises a first connecting member and a second connecting member; the first connecting member is arranged at one end of the first arc-shaped metal sheet, and the second connecting member is arranged at one end of the second arc-shaped metal sheet; a protrusion is provided on the first arc-shaped metal sheet, and a clamping hole is provided on the second arc-shaped metal sheet, the number of one of the protrusion and the clamping hole is at least one, and the number of the other is at least two, and the protrusion and the clamping hole are clamped together; the first connecting member and the second connecting member are connected to form a clamping closed loop between the first arc-shaped metal sheet and the second arc-shaped metal sheet; the clamping position of the protrusion and the clamping hole along the circumference of the clamping closed loop is adjusted to change the inner diameter of the clamping closed loop. First, the first curved metal and the second curved metal of the optical cable fixing device are made of metal. The metal material has better weathering resistance and is less likely to break or fall off, thereby improving the stability of the optical cable fixing; secondly, through the clamping adjustment between the protrusion and the clamping hole, the size of the inner diameter of the clamping closed loop can be changed, so that the fixing device can be suitable for cables with different cross-sectional diameters, thereby improving the applicability of the fixing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 A schematic diagram of a fixing device is provided for an embodiment of the present application;

[0030] Figure 2 for Figure 1 Schematic diagram of the connection between the first curved metal sheet and the second curved metal sheet;

[0031] Figure 3 for Figure 1 Schematic diagram of the middle sealing member;

[0032] Figure 4 for Figure 1 Another schematic diagram of the fixing device;

[0033] Figure 5 for Figure 1 Exploded view of the fixture in the middle;

[0034] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0035] Description of reference numerals:

[0036] 100-first curved metal sheet;

[0037] 200- second curved metal sheet;

[0038] 300 - end closed loop assembly; 310 - first connecting piece; 320 - second connecting piece; 330 - sealing piece; 331 - first straight plate; 332 - second straight plate;

[0039] 400-hold the closed loop;

[0040] 500- buckle slot;

[0041] 600-rubber strip; 610-covering portion; 620-sleeve portion;

[0042] 700-press bulge;

[0043] 800-Press hole. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. The following embodiments and features in the embodiments can be combined with each other unless there is a conflict.

[0045] In the prior art, optical cable fixtures are components used to secure optical cables and are widely used in various optical cable laying applications. Optical cables, as products used for real-time information monitoring and transmission, come in various types. For example, temperature-sensing optical cables are used for temperature monitoring. During installation, optical cables are typically secured to their respective objects using fixtures, typically plastic cable ties. Consequently, these plastic cable ties can be affected by the external environment over extended periods of use, becoming susceptible to weathering, breakage, or detachment, leading to unstable cable fixation.

[0046] To overcome the shortcomings of the prior art, the present application provides an optical cable fixing device, comprising a first curved metal sheet, a second curved metal sheet, and an end closed loop assembly. The end closed loop assembly comprises a first connecting member and a second connecting member. The first connecting member is disposed at one end of the first curved metal sheet, and the second connecting member is disposed at one end of the second curved metal sheet. The first curved metal sheet is provided with a protrusion, and the second curved metal sheet is provided with a latching hole. One of the protrusion and the latching hole is provided with at least one, and the other is provided with at least two, and the protrusion and the latching hole are engaged. The first connecting member and the second connecting member are connected to form a clamping closed loop between the first and second curved metal sheets. The inner diameter of the clamping closed loop can be changed by adjusting the clamping position of the protrusion and the latching hole along the circumference of the clamping closed loop. This device can solve the problem of unstable optical cable fixing.

[0047] The content of the utility model will be described in detail below with reference to the accompanying drawings so that those skilled in the art can understand the content of the utility model more clearly and in detail.

[0048] Figure 1 A schematic diagram of a fixing device is provided for an embodiment of the present application.

[0049] Figure 2 for Figure 1 Schematic diagram of the connection between the first curved metal sheet and the second curved metal sheet.

[0050] Figure 4 for Figure 1 Another schematic diagram of the fixing device.

[0051] Figure 5 for Figure 1 Exploded view of the fixture in Figure 1.

[0052] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0053] See also Figure 1 、 Figure 2 、 Figure 4 and Figure 5 , an optical cable fixing device includes a first arc-shaped metal sheet 100, a second arc-shaped metal sheet 200 and an end closed loop assembly 300.

[0054] The closed-end ring assembly 300 includes a first connector 310 and a second connector 320 .

[0055] The first connecting member 310 is disposed at one end of the first arc-shaped metal sheet 100 , and the second connecting member 320 is disposed at one end of the second arc-shaped metal sheet 200 .

[0056] The first arc-shaped metal sheet 100 is provided with a protrusion, and the second arc-shaped metal sheet 200 is provided with a clamping hole. The number of one of the protrusion and the clamping hole is at least one, and the number of the other is at least two. The protrusion and the clamping hole are clamped together.

[0057] The first connecting member 310 and the second connecting member 320 are connected to form a closed loop 400 between the first curved metal sheet 100 and the second curved metal sheet 200 .

[0058] The inner diameter of the clamping ring 400 is changed by adjusting the clamping positions of the protrusion and the clamping hole along the circumference of the clamping closed ring 400 .

[0059] Exemplarily, the first curved metal sheet 100 and the second curved metal sheet 200 can be selected from corrosion-resistant or rust-proof metals such as stainless steel alloy or aluminum metal, which are not listed here one by one; preferably, the radii of the first curved metal sheet 100 and the second curved metal sheet 200 are equal.

[0060] For example, the number of raised portions may be one or more, and the corresponding number of opening portions may be two or more; or the number of raised portions may be two or more, and the corresponding number of opening portions may be one or more; the number of the two is not limited here.

[0061] See also Figure 4 and Figure 5 It should be noted that the initial state between the first connecting member 310 and the second connecting member 320 is an unconnected state, and the clamping closed loop 400 is not formed at this time. This embodiment takes a protrusion and two clamping holes as an example. It should be noted that the two clamping holes are distributed along the length circumferential direction of the second arc-shaped metal sheet 200. In the initial state, a protrusion is clamped in the clamping hole near the second connecting member 320. At this time, the first connecting member 310 and the second connecting member 320 are connected, thereby forming a clamping closed loop 400, and the inner diameter of the clamping closed loop 400 is the smallest.

[0062] As described above, when the first connector 310 and the second connector 320 are not connected, the first curved metal sheet 100 and the second curved metal sheet 200 are placed over the optical cable to be secured, and the first curved metal sheet 100 and the second curved metal sheet 200 are clamped to a predetermined fixed object, such as a fixing rod. The first connector 310 and the second connector 320 are then connected to form a clamping loop 400. The clamping loop 400 thus clamps the optical cable to be secured to the fixed object to secure the optical cable. Alternatively, the first curved metal sheet 100 and the second curved metal sheet 200 can be made of stainless steel alloy or aluminum metal, which are corrosion-resistant and less susceptible to external influences, making them less likely to break or fall off.

[0063] When the inner diameter of the clamping ring 400 needs to be increased to accommodate an optical cable with a larger cross-sectional radius, the protrusion is initially removed from the locking hole near the second connector 320 and then engaged with the protrusion in the locking hole away from the second connector 320. This increases the inner diameter of the clamping ring 400 after the first connector 310 and the second connector 320 are connected. By adjusting the circumferential engagement position of the protrusion and the locking hole on the clamping ring 400, the inner diameter of the clamping ring 400 can be changed, thereby improving the usability of the fixing device.

[0064] In addition, when the number of raised parts is two and the number of latching holes is one, similarly, when the two raised parts are distributed along the length circumferential direction of the first arc-shaped metal sheet 100, in the initial state, the raised part close to the first connecting member 310 is latched in a latching hole. At this time, the inner diameter of the clamping closed loop 400 is the smallest. When the inner diameter of the clamping closed loop 400 needs to be increased, the raised part close to the first connecting member 310 is pulled out from the latching hole, and the raised part away from the first connecting member 310 is latched in the latching hole. In this way, the inner diameter of the clamping closed loop 400 can be increased.

[0065] In some embodiments, the protrusion is a polygonal protrusion, and the clamping hole is a polygonal hole corresponding to the protrusion.

[0066] Alternatively, the protrusion is a spherical protrusion, and the clamping hole is a circular hole corresponding to the protrusion.

[0067] For example, the protrusion is a quadrilateral protrusion and the engaging hole is a quadrilateral hole. More preferably, the quadrilateral is a square or a square. The multiple sides of the polygonal hole have more contact points with the polygonal hole, which increases the friction between the protrusion and the engaging hole and improves the reliability of the engaging connection between the two.

[0068] For example, the spherical protrusion has the advantage of not causing edge collisions.

[0069] In some embodiments, the number of the protrusions and the number of the latch holes are at least three, respectively.

[0070] For example, three protrusions are evenly spaced along the circumference of the first curved metal sheet 100. Similarly, three latching holes are evenly spaced along the circumference of the second curved metal sheet 200. Preferably, the number of latching holes can be as large as possible so that the protrusions have sufficient distance for latching adjustment. In this way, the number of latching holes can be much greater than the number of protrusions. In embodiments with multiple protrusions and latching holes, the adjustment principle of the corresponding clamping closed loop 400 is consistent with the above-mentioned principle and will not be repeated here.

[0071] In addition, the protrusion can be a pressing protrusion 700 and the hole can be a pressing hole 800 .

[0072] In some embodiments, the optical cable fixing device also includes a rubber strip 600, which includes at least a covering portion 610 and two socket portions 620. The two socket portions 620 are relatively arranged on both sides of the covering portion 610. The covering portion 610 is buckled on the outer wall of the clamping closed loop 400, and the two socket portions 620 are buckled on the two opposite side walls of the clamping closed loop 400.

[0073] See also Figure 5 and Figure 6 For example, the cross-section of the rubber strip 600 is U-shaped, so that the U-shaped rubber strip 600 is directly connected to the outer wall and side walls of the clamping ring 400. More preferably, the rubber strip 600 is preferably connected to the joint between the protruding component and the clamping hole, and then the two ends of the rubber strip 600 extend toward the first connecting member 310 and the second connecting member 320 respectively. The rubber strip 600 wraps around the outside of the clamping ring 400, thereby protecting the clamping ring 400 and reducing its external impact and shock.

[0074] Exemplarily, the rubber strip 600 can be made of plastic material or sponge and other materials with shockproof effects, which are not listed here one by one.

[0075] In some embodiments, the first connecting member 310 is a buckle, and the second connecting member 320 is a buckle platform. The buckle platform is provided with an opening, and the buckle is buckled in the opening.

[0076] For example, one side of the buckle is rotatably connected to one end of the first arc-shaped metal sheet 100, and the buckle is rotated toward the buckle platform so that one side of the buckle is buckled in the test hole, thereby forming a tight closed loop 400. The connection method of the buckle platform and the buckle has the characteristics of simple structure and easy operation.

[0077] In some embodiments, the buckle platform is disposed on the outer side wall of the clamping closed ring 400 , and the opening is disposed on a side of the buckle platform away from the clamping closed ring 400 .

[0078] Exemplarily, the buckle platform is arranged on the outer wall of the second curved metal sheet 200, and correspondingly, the buckle ring is arranged on the outer wall of the first curved metal sheet 100, so that the buckle platform and the buckle ring will not occupy the inner space of the clamping closed ring 400, and will not affect the clamping space of the clamping closed ring 400 for the optical cable.

[0079] In some embodiments, the end closed-loop assembly 300 further includes a sealing member 330 , which is rotatably disposed at one end of the first arc-shaped metal sheet 100 or the second arc-shaped metal sheet 200 .

[0080] After the buckle is locked in the opening, the sealing member 330 rotates toward the opening and covers the opening to prevent the buckle from being separated from the opening.

[0081] For example, the sealing member 330 can be set on the first curved metal sheet 100, or on the second curved metal sheet 200, without limitation here; in this embodiment, the sealing member 330 can be set on the first curved metal sheet 100 as an example. At this time, the sealing member 330 and the buckle can share a rotational fixed position, and the sealing member 330 is located on the outside of the buckle.

[0082] It should be noted that after the buckle is fastened to the opening, the sealing member 330 rotates toward the buckle platform, and the sealing member 330 finally abuts against the top of the opening. After the sealing member 330 covers the opening, it effectively prevents the buckle from detaching from the opening, avoiding the failure of the holding closed ring 400.

[0083] Figure 3 for Figure 1 Schematic diagram of the sealing part.

[0084] In some embodiments, see Figure 3 and Figure 5 The sealing member 330 is provided with a buckle groove 500, and the sealing member 330 is rotated toward the opening so that the buckle groove is buckled on the opening of the buckle platform.

[0085] It should be noted that the sealing piece 330 is a bar-shaped block. Before the sealing piece 330 is buckled onto the opening, a buckle groove 500 is provided on the side of the sealing piece 330 facing away from the first arc-shaped metal sheet 100. During the process of the sealing piece 330 rotating toward the buckle platform, the sealing piece 330 moves toward the opening so that the buckle groove 500 is buckled onto the opening, thereby closing the opening. More specifically, the entire buckle platform is buckled into the buckle groove 500, so that the buckle groove surrounds and protects the buckle platform.

[0086] In some embodiments, the sealing member 330 includes a first straight plate 331 and a second straight plate 332, one end of the first straight plate 331 is rotatably connected to one end of the first curved metal sheet 100 or the second curved metal sheet 200, one end of the second straight plate 332 is connected to the other end of the first straight plate 331, and an angle is formed between the second straight plate 332 and the first straight plate 331.

[0087] The buckle groove 500 is at least provided on the first straight plate 331 . When the buckle groove 500 is buckled on the buckle platform, the second straight plate 332 buckles inward toward the middle of the clamping closed loop 400 so that the second straight plate 332 fits against the outer wall of the first curved metal sheet 100 or the second curved metal sheet 200 .

[0088] Exemplarily, the angle between the second straight plate 332 and the first straight plate 331 is between 120° and 150°. Before the sealing member 330 is fastened to the opening, the second straight plate 332 extends away from the first curved metal sheet 100. As the sealing member 330 rotates toward the fastening platform and the fastening groove 500 finally engages with the fastening platform, the second straight plate 332 extends away from the second curved metal sheet 200 and abuts against the outer wall of the second curved metal sheet 200 along the curvature of the second curved metal sheet 200. This allows the end of the sealing member 330 to bend inward toward the center of the clamping ring 400, preventing the end of the sealing member 330 from warping outward and potentially rubbing against external components.

[0089] In some embodiments, the width of the first curved metal sheet 100 is 5 mm-15 mm, the length of the first curved metal sheet 100 is 50 mm-70 mm, and the thickness of the first curved metal sheet 100 is 0.4 mm-0.8 mm.

[0090] The width of the second curved metal sheet 200 is 5mm-15mm, the length of the second curved metal sheet 200 is 50mm-70mm, and the thickness of the second curved metal sheet 200 is 0.4mm-0.8mm.

[0091] For example, the width of the first curved metal sheet 100 and the second curved metal sheet 200 can be selected from 5mm-15mm, such as 5mm, 7mm, 9mm, 11mm, 13mm, 15mm, etc., which are not listed here. This limitation is mainly to avoid the problem of the first curved metal sheet 100 and the second curved metal sheet 200 being too thin and thus strangling the optical cable. The width of the first curved metal sheet 100 and the second curved metal sheet 200 can be selected from 50mm-70mm, such as 50mm, 55mm, 60mm, 65mm, 70mm, etc., which are not listed here. This limitation is mainly to ensure that the inner diameter of the clamping closed loop 400 formed by the first curved metal sheet 100 and the second curved metal sheet 200 is sufficient to wrap around the optical cable, while also having sufficient adjustment space between the two to adjust the inner diameter of the clamping closed loop 400. The width of the first curved metal sheet 100 and the second curved metal sheet 200 can be selected from 0.4 mm to 0.8 mm, such as 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, etc., which are not listed here. This limitation is mainly to ensure that the first curved metal sheet 100 and the second curved metal sheet 200 have sufficient thickness to ensure the reliability of both and avoid the problem of breakage caused by being too thin.

[0092] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0093] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0094] It should be readily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes the meaning of “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0095] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90° or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An optical cable fixing device, characterized in that: It comprises a first arc-shaped metal sheet (100), a second arc-shaped metal sheet (200) and an end closed-loop assembly (300); The end closed-loop assembly (300) includes a first connecting piece (310) and a second connecting piece (320); The first connecting member (310) is arranged at one end of the first arc-shaped metal sheet (100), and the second connecting member (320) is arranged at one end of the second arc-shaped metal sheet (200); The first arc-shaped metal sheet (100) is provided with a protrusion, and the second arc-shaped metal sheet (200) is provided with a clamping hole. The number of one of the protrusion and the clamping hole is at least one, and the number of the other is at least two. The protrusion and the clamping hole are clamped together. The first connecting member (310) and the second connecting member (320) are connected to form a closed loop (400) between the first arc-shaped metal sheet (100) and the second arc-shaped metal sheet (200); The protrusion is engaged with different clamping holes to adjust the inner diameter of the clamping closed ring (400).

2. The optical cable fixing device according to claim 1, characterized in that: The protrusion is a polygonal protrusion, and the clamping hole is a polygonal hole corresponding to the protrusion; Alternatively, the protrusion is a spherical protrusion, and the clamping hole is a circular hole corresponding to the protrusion.

3. The optical cable fixing device according to claim 1 or 2, characterized in that: The number of the protrusions and the number of the latching holes are at least three, respectively.

4. The optical cable fixing device according to claim 1, wherein: Also includes a rubber strip (600), The rubber-coated strip (600) comprises at least a covering portion (610) and two sleeve portions (620), wherein the two sleeve portions (620) are arranged on both sides of the covering portion (610) opposite to each other, the covering portion (610) is buckled on the outer wall of the clamping closed loop (400), and the two sleeve portions (620) are buckled on two opposite side walls of the clamping closed loop (400).

5. The optical cable fixing device according to claim 1, wherein: The first connecting member (310) is a buckle, and the second connecting member (320) is a buckle platform. The buckle platform is provided with an opening, and the buckle is buckled in the opening.

6. The optical cable fixing device according to claim 5, characterized in that: The buckle platform is arranged on the outer side wall of the clamping closed ring (400), and the opening is arranged on a side of the buckle platform away from the clamping closed ring (400).

7. The optical cable fixing device according to claim 5 or 6, characterized in that: The end closed-loop assembly (300) further includes a sealing member (330), wherein the sealing member (330) is rotatably disposed on one end of the first arc-shaped metal sheet (100) or the second arc-shaped metal sheet (200); After the buckle is buckled in the opening, the sealing member (330) rotates toward the opening and blocks the opening to prevent the buckle from being separated from the opening.

8. The optical cable fixing device according to claim 7, characterized in that: The sealing member (330) is provided with a buckling groove (500), and the sealing member (330) rotates toward the opening so that the buckling groove buckles with the opening of the buckling platform.

9. The optical cable fixing device according to claim 8, characterized in that: The sealing member (330) comprises a first straight plate (331) and a second straight plate (332), wherein one end of the first straight plate (331) is rotatably connected to one end of the first arc-shaped metal sheet (100) or the second arc-shaped metal sheet (200), and one end of the second straight plate (332) is connected to the other end of the first straight plate (331), and an angle is formed between the second straight plate (332) and the first straight plate (331); The buckle groove (500) is at least provided on the first straight plate (331); when the buckle groove (500) is buckled onto the buckle platform, the second straight plate (332) buckles inward toward the middle of the clamping closed loop (400), so that the second straight plate (332) is attached to the outer wall of the first arc-shaped metal sheet (100) or the second arc-shaped metal sheet (200).

10. The optical cable fixing device according to claim 1, wherein: The width of the first curved metal sheet (100) is 5 mm to 15 mm, the length of the first curved metal sheet (100) is 50 mm to 70 mm, and the thickness of the first curved metal sheet (100) is 0.4 mm to 0.8 mm; The width of the second arc-shaped metal sheet (200) is 5 mm to 15 mm, the length of the second arc-shaped metal sheet (200) is 50 mm to 70 mm, and the thickness of the second arc-shaped metal sheet (200) is 0.4 mm to 0.8 mm.

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