Optical cable strain clamp
By designing the rotating shaft and limiting ring structure of the optical cable tension clamp, the problem of insufficient fixing reliability of optical cable hardware was solved, achieving stable fixing of optical cables and adapting to various cable types, thus avoiding cable sheath damage.
Patent Information
- Application Number
- CN202423269308.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing optical cable fittings are not very reliable when fixing short-span optical cables, especially 2×5.2 butterfly cables and 3.0mm round cables. They are prone to cable sheath damage or loosening, and traditional convex pressure plates are prone to sheath pulling.
A tension clamp for optical cables was designed, comprising an outer shell and an inner shell. The inner shell is connected to the outer shell by a rotating shaft. The outer wall of the inner shell is not a complete circle and is equipped with a limiting ring and a rotating locking mechanism. The inner shell can be flipped and latched. The width of the cable winding channel can be adjusted by the cooperation of the limiting ring and the rotating locking mechanism, and the appropriate pressure is ensured by the limiting protrusion and the slot.
It achieves stable fixation of optical cables, prevents cable sheath damage, is compatible with various cable types, has an ingenious structure, is stable in operation, and is easy to operate.
Smart Images
Figure CN223624459U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical cable fittings technology, and in particular to an optical cable tension clamp. Background Technology
[0002] Optical cable fittings are common products in optical cable laying, mainly used to fix and protect the optical cable in the line. Among the existing optical cable fittings, the fittings for drop cables are often overlooked because the span is often small and the tensile strength is relatively low. They are not very reliable in fixing optical cables such as 2×5.2 butterfly cables and 3.0mm round cables, and the tensile strength is insufficient, which can easily lead to damage or loosening of the optical cable sheath.
[0003] Currently, there is a type of tension clamp for drop cables that uses metal plates to press down on the butterfly-shaped optical cable (2×5.2). The metal plates have protrusions on their pressing surfaces, and these protrusions are often very sharp, which can easily pull the cable sheath during the process of the optical cable being stressed.
[0004] Therefore, the second type of drop cable tension clamp is an improvement on the first type of clamp, eliminating the pressure plate with protrusions and replacing it with a textured optical cable. However, the effective distance of this clamp is still limited, the friction is not large enough, and the tension it can provide is limited. Utility Model Content
[0005] The main purpose of this utility model is to provide a tension clamp for optical cables, which is designed to facilitate cable coiling and is equipped with a locking structure to lock the optical cable during coiling, thereby preventing the optical cable from slipping.
[0006] To achieve the above objectives, this utility model provides an optical cable tension clamp, comprising:
[0007] The outer shell has an opening at the top and a hollow interior to form a chamber for accommodating the inner shell. The bottom wall of the chamber has a rotating shaft in the middle, and the free end of the rotating shaft is provided with a rotation locking mechanism. The side wall openings of the chamber form an inlet hole and an outlet hole.
[0008] The inner shell is embedded in the cavity of the outer shell and has a circular hole in the middle to fit around the outside of the rotating shaft. A limiting ring adapted to the rotation locking mechanism is provided on the inner side wall of the circular hole. The cross-section of the outer side wall of the inner shell is not a complete circle. The gap formed by the outer side wall of the inner shell and the inner side wall of the outer shell forms a cable winding channel. Through the cooperation of the limiting ring and the rotation locking mechanism, the inner shell can be rotated or tightened relative to the outer shell in the cavity to adjust the width of the cable winding channel.
[0009] Preferably, the optical cable tension clamp further includes a flip-up buckle rotatably connected to the inner shell. After the flip-up buckle is rotated, its end is fastened to the outer side wall of the outer shell to relieve the stress on the outer shell.
[0010] Preferably, the top surface of the inner shell is provided with an irregular groove, and the flip-up buckle can be accommodated in the irregular groove and rotatably connected to the inner shell by a pin.
[0011] Preferably, the front side of the flip-up buckle is provided with a pivot, and the side wall of the irregular groove is provided with an opening to accommodate the pivot. The rear end of the flip-up buckle extends downward to form a fastening part. The side of the fastening part is used to fit against the outer side wall of the outer shell. The middle part of the flip-up buckle protrudes outward to form a stop part to prevent the pivot from being directly subjected to tensile force.
[0012] Preferably, the rotation locking mechanism includes a plurality of high-position limiting buckles arranged circumferentially along the rotation axis and a plurality of low-position limiting buckles arranged circumferentially along the rotation axis. The limiting ring is selectively installed between the high-position limiting buckles and the low-position limiting buckles or below the low-position limiting ring. The bottom end of the high-position limiting buckle facing the low-position limiting buckle is provided with a limiting protrusion. The limiting ring is provided with a groove that matches the limiting protrusion. When the limiting ring is installed between the high-position limiting buckles and the low-position limiting buckles, the limiting protrusion is accommodated in the groove, and the inner shell is fixed relative to the outer shell.
[0013] Preferably, the limiting ring has multiple slots in its annular structure, and the slots are evenly arranged along the axial direction of the limiting ring.
[0014] Preferably, the high-position limiting buckle and the low-position limiting buckle are staggered in the same direction on the rotating shaft. Both the high-position limiting buckle and the low-position limiting buckle are L-shaped structures protruding from the end of the rotating shaft, and there is a gap between the high-position limiting buckle and its adjacent low-position limiting buckle.
[0015] Preferably, the inner shell and the outer shell are also equipped with a limiting mechanism to limit the rotation angle of the inner shell relative to the outer shell, and the center line of the narrowest part of the cable winding channel formed by the inner shell and the outer shell is aligned with the center line of the inlet hole.
[0016] Preferably, the limiting mechanism includes a limiting protrusion protruding from the bottom of the inner shell and a rotating limiting groove located on the bottom wall of the slot and adapted to the limiting protrusion. When the limiting ring is installed below the low-position limiting ring, the limiting protrusion is accommodated in the rotating limiting groove. The rotation angle of the inner shell is limited by setting the length of the rotating limiting groove.
[0017] Preferably, the side of the flip-up hook and the side wall of the irregular groove are also connected by a snap fastener to secure the flip-up hook contained in the irregular groove.
[0018] Preferably, the outer shell is provided with a hook, and the hole on the outer shell for the hook to pass through is a mounting hole. The center of the mounting hole, the center line of the narrowest part of the cable winding channel formed by the inner shell and the outer shell, and the center line of the cable inlet hole are all on a straight line.
[0019] The optical cable tension clamp proposed in this utility model has the following beneficial effects:
[0020] 1. The inner shell and outer shell rotate through the central axis, which can create pressure on the optical cable between the inner shell and the outer shell, making it easier to coil the cable. At the same time, it has a certain fixing force on the coiled optical cable, thus preventing the coiled optical cable from loosening outward.
[0021] 2. The inner shell rotates relative to the rotating shaft. This structural combination allows the tension clamp of this optical cable to be adapted to various different cable types.
[0022] 3. The inner shell has a limiting device (rotation limiting groove and limiting protrusion) when rotating to ensure that the pressure on the optical cable is moderate and that the pressure is not too high, which may cause the cable sheath to be broken.
[0023] 4. When the optical cable is coiled, the limiting protrusions and the slots are set to ensure that the optical cable will not rotate when coiling, which makes it easier to coil the optical cable.
[0024] 5. This optical cable tension clamp has the advantages of ingenious structure, stable operation and easy implementation. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the optical cable tension clamp of this utility model;
[0026] Figure 2 This is an exploded structural diagram of the optical cable tension clamp of this utility model;
[0027] Figure 3 This is a schematic diagram of the reversible snap fastener in the optical cable tension clamp of this utility model;
[0028] Figure 4 This is a schematic diagram of the outer shell of the optical cable tension clamp of this utility model;
[0029] Figure 5a This is a schematic diagram of the inner shell of the optical cable tension clamp of this utility model from one perspective.
[0030] Figure 5b This is a schematic diagram of the inner shell of the optical cable tension clamp from another perspective.
[0031] Figure 6 This is a schematic diagram of the optical cable tension clamp of this utility model when the flip-up buckle is rotated to the vertical position;
[0032] Figure 7a This is a cross-sectional view of the optical cable tension clamp of this utility model in the first state.
[0033] Figure 7b This is a bottom view of the optical cable tension clamp of this utility model in the first state.
[0034] Figure 8a This is a cross-sectional view of the optical cable tension clamp of this utility model in the second state.
[0035] Figure 8b This is a cross-sectional view of the optical cable tension clamp of this utility model in the second state from another perspective;
[0036] Figure 9a This is a bottom view of the optical cable tension clamp of this utility model in the second state.
[0037] Figure 9b This is a top view of the optical cable tension clamp of this utility model in the second state.
[0038] Figure 10 This is a schematic diagram of the optical cable tension clamp of this utility model when the inner shell rotates relative to the outer shell;
[0039] Figure 11a This is a schematic diagram of the optical cable tension clamp of this utility model, showing the structure of the rotatable buckle and the inner shell in conjunction;
[0040] Figure 11b This is a cross-sectional view of the optical cable tension clamp of this utility model, showing the fit between the rotatable buckle and the inner shell.
[0041] Figure 11c This is a cross-sectional view of the optical cable tension clamp of this utility model, showing the rotatable buckle and the inner shell working together.
[0042] In the diagram, 1-hook, 2-flip-out hook, 21-rotating shaft, 22-stop block, 23-hook, 25-fastening part, 3-outer shell, 31-high position limit buckle, 311-limiting protrusion, 32-low position limit buckle, 33-rotating limit groove, 34-inlet hole, 35-outlet hole, 36-mounting hole, 37-inner wall of the outer shell, 38-outer wall of the outer shell, 4-inner shell, 41-opening, 42-irregular groove, 43-buckle that matches the hook, 44-outer wall of the inner shell, 45-limiting protrusion, 46-limiting retaining ring, 461-slot.
[0043] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0044] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0045] It should be noted that in the description of this utility model, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0046] Reference Figures 1 to 10 In this preferred embodiment, an optical cable tension clamp includes:
[0047] The outer shell 3 has an opening at the top and a hollow interior to form a chamber for accommodating the inner shell. The bottom wall of the chamber has a rotating shaft in the middle. The free end of the rotating shaft (the free end refers to the end away from the bottom wall of the chamber) is provided with a rotation locking mechanism. The side wall openings of the chamber form an inlet hole 34 and an outlet hole 35.
[0048] The inner shell 4 is embedded in the cavity of the outer shell 3 and has a circular hole in the middle to fit around the outside of the rotating shaft. A limiting ring 46 adapted to the rotation locking mechanism is provided on the inner side wall of the circular hole. The cross-section of the outer side wall of the inner shell 4 is not a complete circle. The gap formed by the outer side wall of the inner shell 4 and the inner side wall of the outer shell 3 forms a cable winding channel (for winding optical cable). The limiting ring 46 and the rotation locking mechanism cooperate to form a locking structure, so that the inner shell 4 can rotate or be fastened relative to the outer shell 3 in the cavity to adjust the width of the cable winding channel.
[0049] Furthermore, referring to Figure 2 and Figure 3 The optical cable tension clamp also includes a flip-up latch 2 that is rotatably connected to the inner shell 4. After the flip-up latch 2 is rotated, its end is fastened to the outer wall of the outer shell 3 to relieve the stress on the outer shell 3. The flip-up latch 2 can also prevent the optical cable from jumping out.
[0050] Specifically, an irregular groove 42 (the shape of which is adapted to the shape of the flip-up buckle 2) is provided on the top surface of the inner shell 4. The flip-up buckle 2 is accommodated in the irregular groove 42 and is rotatably connected to the inner shell 4 by a pin.
[0051] Furthermore, the front side of the flip-up buckle 2 is provided with a pivot 21, and the side wall of the irregular groove 42 is provided with an opening 41 to accommodate the pivot 21 (by the cooperation of the pivot 21 and the opening 41, and with the design of the irregular groove 42, the flip-up buckle 2 can rotate 90 degrees relative to the inner shell 4). The rear end of the flip-up buckle 2 extends downward to form a fastening part 25. The side of the fastening part 25 is used to fit against the outer side wall of the outer shell 3. The middle part of the flip-up buckle 2 protrudes outward to form a stop part 22 to prevent the pivot 21 from being directly subjected to tension, thereby protecting the pivot 21.
[0052] Reference Figures 11a to 11c In this embodiment, by providing the fastening part 25, when the inner shell 4 rotates relative to the outer shell 3, it will cause the outer shell 3 to undergo a certain deformation. After the flip-hook 23 rotates, its end is fastened to the outer side wall of the outer shell 3, which can alleviate the situation where the outer shell 3 bears the load alone and increase its service life. In addition, after the flip-hook 2 is flipped 90 degrees relative to the inner shell 4, it can also become a handle. When the inner shell 4 switches states relative to the outer shell 3, such as pressing down or pulling up, the flip-hook 2 can act as a handle, thereby facilitating manual operation.
[0053] Furthermore, the side of the flip-up hook-and-loop fastener 2 is connected to the side wall of the irregular groove 42 by a snap fastener to fix the flip-up hook-and-loop fastener 2 contained in the irregular groove 42. In this way, the flip-up hook-and-loop fastener 2 will not come out at will while contained in the irregular groove 42, thus ensuring the reliability of the structure. Specifically, a hook-and-loop fastener 23 can be provided on the side of the flip-up hook-and-loop fastener 2, and a snap fastener 43 adapted to the hook-and-loop fastener 23 can be provided on the side wall of the irregular groove 42.
[0054] Furthermore, a hook 11 is provided on the outer casing 3. An installation hole 36 is provided on the outer casing 3, and the hook 11 is fitted onto the installation hole 36. This optical cable tension clamp can be wall-mounted or installed using the hook 11, depending on actual needs.
[0055] Specifically, the cross-section of the slot is a perfect circle. (Refer to...) Figures 5a to 5b The inner shell 4 has a near-annular structure, with its inner ring side facing the rotation axis and its outer ring side facing the inner wall of the outer shell 3 to form a cable winding channel. The outer wall cross-section of the inner shell 4 is not perfectly circular, meaning that the cross-section is not a regular circle. It can be an oblong shape, an ellipse, or other curved structure. This invention does not limit this, as long as it is not a regular circle. In this way, when the inner shell 4 rotates relative to the outer shell 3, the width of the cable winding channel will vary with the angle of rotation of the inner shell 4, thereby clamping the optical cable inside the cable winding channel.
[0056] Specifically, refer to Figure 4In this embodiment, the rotation locking mechanism includes a plurality of high-position limiting buckles 31 arranged circumferentially along the rotation axis and a plurality of low-position limiting buckles 32 arranged circumferentially along the rotation axis. The limiting ring 46 is selectively installed between the high-position limiting buckles 31 and the low-position limiting buckles 32 or below the low-position limiting buckles 32. The bottom end of the high-position limiting buckle 31 facing the low-position limiting buckle 32 is provided with a limiting protrusion 311. The limiting ring 46 is provided with a groove 461 that matches the limiting protrusion 311. When the limiting ring 46 is installed between the high-position limiting buckles 31 and the low-position limiting buckles 32, the limiting protrusion 311 is accommodated in the groove 461, and the inner shell 4 is fixed relative to the outer shell 3.
[0057] When the limiting ring 46 is located between the high limiting buckle 31 and the low limiting buckle 32, the inner shell 4 is fixed relative to the outer shell 3, which is the cable coiling state, so that the rotation of the inner shell 4 will not affect the cable coiling. When the limiting ring 46 is located below the low limiting buckle 32, the inner shell 4 can rotate relative to the outer shell 3.
[0058] In this embodiment, the limiting ring 46 has multiple slots 461 in its annular structure, and the slots 461 are evenly arranged axially in the limiting ring 46. The figure illustrates this specifically by taking an example where the high-position limiting buckle 31, the low-position limiting buckle 32, and three slots are all provided.
[0059] The high-position limiting buckle 31 and the low-position limiting buckle 32 are staggered in the same direction on the rotation axis (that is, each high-position limiting buckle 31 is adjacent to a low-position limiting buckle 32). Both the high-position limiting buckle 31 and the low-position limiting buckle 32 are L-shaped structures protruding from the end of the rotation axis. The height of the high-position limiting buckle 31 is greater than the height of the low-position limiting buckle 32. There is a gap between the high-position limiting buckle 31 and its adjacent low-position limiting buckle 32.
[0060] The gap between the high-position limiting buckle 31 and its adjacent low-position limiting buckle 32 creates an elastic structure for the rotating locking mechanism, which facilitates the switching of the inner shell 4 between two installation states (one where the limiting ring 46 is between the high-position limiting buckle 31 and the low-position limiting buckle 32, and the other where the limiting ring 46 is below the low-position limiting buckle 32).
[0061] When the inner shell 4 is pressed downward relative to the outer shell 3 (from the position of the limiting ring 46 between the high limiting buckle 31 and the low limiting buckle 32 to the position below the low limiting buckle 32), the limiting ring 46 squeezes the low limiting buckle 32, and the low limiting buckle 32 will contract and deform inward, thereby providing space for the limiting ring 46 to pass through. After the limiting ring 46 passes through the low limiting buckle 32, the low limiting buckle 32 returns to its original shape under its own elasticity. The bottom end face of the low limiting buckle 32 is fitted with the top end face of the limiting ring 46, and the inner shell 4 can rotate relative to the outer shell 3.
[0062] In addition, both the high-position limit buckle 31 and the low-position limit buckle 32 have guide slopes on the side facing the limit ring 46, so as to guide the inner shell 4 when it is pressed relative to the outer shell 3.
[0063] Furthermore, the inner shell 4 and the outer shell 3 are also equipped with a limiting mechanism to limit the rotation angle of the inner shell 4 relative to the outer shell 3.
[0064] Reference Figure 7a and Figure 7b This embodiment proposes a specific structure for a limiting mechanism: the limiting mechanism includes a limiting protrusion 45 protruding from the bottom of the inner shell 4, and a rotating limiting groove 33 located on the slotted bottom wall of the outer shell 3 and adapted to the limiting protrusion 45. When the limiting ring 46 is installed below the low-position limiting buckle 32, the limiting protrusion 45 is accommodated in the rotating limiting groove 33, and the rotation angle of the inner shell 4 is limited by the length setting of the rotating limiting groove 33.
[0065] Furthermore, the center line of the narrowest part of the cable channel formed by the inner shell 4 and the outer shell 3 is aligned with the center line of the inlet hole 34.
[0066] Because the inner shell 4 and the outer shell 3 are rotatable to adjust the width of the cable winding channel, when the cable winding channel between the inner shell 4 and the outer shell 3 is at its narrowest point, the center line of the narrowest point of the cable winding channel and the center line of the inlet hole 34 are aligned, that is, they are on a straight line, so as to ensure overall force balance.
[0067] Furthermore, the hole on the outer shell 3 for the hook to pass through is its mounting hole. The center of the mounting hole, the center line of the narrowest part of the cable winding channel formed by the inner shell 4 and the outer shell 3, and the center line of the cable inlet hole 34 are all on a straight line to facilitate overall force balance.
[0068] This optical cable tension clamp has two working states.
[0069] The first state, refer to Figure 7a and Figure 7bThe limiting ring 46 is installed between the high-position limiting buckle 31 and the low-position limiting buckle 32. The limiting protrusion 311 of the high-position limiting buckle 31 fits perfectly into the groove of the limiting ring 46. The inner shell 4 is fixed relative to the outer shell 3. At this time, the design of the inner shell 4 makes the winding surface of the inner shell 4 parallel to the outer shell 3. At this time, the width of the cable winding channel is relatively wide, which facilitates the winding of the optical cable. After the optical cable is wound, pressing the inner shell 4 switches the tension clamp of this optical cable to the second state.
[0070] The second state, refer to Figure 8a and Figure 8b The limiting ring 46 is installed below the low-position limiting buckle 32 (at this time, the limiting protrusion 311 and the slot are disengaged, and the inner shell 4 can rotate in the circumferential direction). Rotating the inner shell 4 counterclockwise... Figure 9a and Figure 9b As shown, the limiting protrusion 45 of the inner shell 4 rotates from end A to end B along the rotation limiting groove 33 of the outer shell 3. At this time, the limiting protrusion 45 is at end B, and the inner shell 4 and the outer shell 3 change from a parallel state to a state where the gap between the two ends is reduced, thereby locking the optical cable. At the same time, after the limiting protrusion 45 reaches end B, it will not be able to continue rotating, thereby ensuring that the gap between the inner shell 4 and the outer shell 3 cannot become infinitely smaller, thus protecting the optical cable.
[0071] The working process of this optical cable tension clamp is as follows.
[0072] When the optical cable tension clamp is installed, the limiting ring 46 is located between the high limiting buckle 31 and the low limiting buckle 32, which is the first state. The limiting protrusion 311 of the high limiting buckle 31 is just accommodated in the groove of the limiting ring 46. The inner shell 4 is fixed relative to the outer shell 3, and the optical cable is wound between the winding surface of the inner shell 4 and the outer shell 3. After the optical cable is wound, pressing the inner shell 4 switches the optical cable tension clamp to the second state.
[0073] After pressing the inner shell 4, the limiting ring 46 is located below the low-position limiting buckle 32 (at this time, the limiting protrusion 311 and the slot are disengaged, and the inner shell 4 can rotate in the circumferential direction). Rotating the inner shell 4 counterclockwise, the limiting protrusion 45 of the inner shell 4 rotates along the rotation limiting groove 33 of the outer shell 3 from end A to end B. At this time, the limiting protrusion 45 is at end B, and the coiled surface of the inner shell 4 and the outer shell 3 change from a parallel state to a state where the gap between the two ends is reduced, as shown... Figure 10 As shown, this locks the optical cable in place. At the same time, once the limiting protrusion 45 reaches end B, the inner shell 4 will be unable to continue rotating, thus ensuring that the gap between the inner shell 4 and the outer shell 3 does not become infinitely smaller, thereby protecting the optical cable.
[0074] The optical cable tension clamp proposed in this embodiment has the following beneficial effects:
[0075] 1. The inner shell 4 and the outer shell 3 rotate through the central axis, which can create pressure on the optical cable between the inner shell 4 and the outer shell 3, making it easier to coil the cable. At the same time, it has a certain fixing force on the coiled optical cable, thereby preventing the coiled optical cable from loosening outward.
[0076] 2. The inner shell 4 rotates relative to the rotating axis. This structural cooperation allows the tension clamp of this optical cable to be adapted to a variety of different cable types.
[0077] 3. The inner shell 4 has a limiting mechanism (i.e., rotation limiting groove 33 and limiting protrusion 45) when rotating to ensure that the pressure on the optical cable is moderate and that there will be no excessive pressure that could damage the cable sheath.
[0078] 4. When the optical cable is coiled, the inner shell 4 will not rotate when the optical cable is coiled by setting the limiting protrusion 311 and the slot 461, thus facilitating the coiling of the optical cable.
[0079] 5. This optical cable tension clamp has the advantages of ingenious structure, stable operation and easy implementation.
[0080] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A tension clamp for optical cables, characterized in that, include: The outer shell has an opening at the top and a hollow interior to form a chamber for accommodating the inner shell. The bottom wall of the chamber has a rotating shaft in the middle, and the free end of the rotating shaft is provided with a rotation locking mechanism. The side wall openings of the chamber form an inlet hole and an outlet hole. The inner shell is embedded in the cavity of the outer shell and has a circular hole in the middle to fit around the outside of the rotating shaft. A limiting ring adapted to the rotation locking mechanism is provided on the inner side wall of the circular hole. The cross-section of the outer side wall of the inner shell is not a complete circle. The gap formed by the outer side wall of the inner shell and the inner side wall of the outer shell forms a cable winding channel. Through the cooperation of the limiting ring and the rotation locking mechanism, the inner shell can be rotated or tightened relative to the outer shell in the cavity to adjust the width of the cable winding channel.
2. The optical cable tension clamp as described in claim 1, characterized in that, It also includes a flip-up buckle that is rotatably connected to the inner shell. After the flip-up buckle is rotated, its end is fastened to the outer wall of the outer shell to relieve the stress on the outer shell.
3. The optical cable tension clamp as described in claim 2, characterized in that, The top surface of the inner shell has an irregular groove, and the flip-up buckle can be accommodated in the irregular groove and is rotatably connected to the inner shell by a pin.
4. The optical cable tension clamp as described in claim 3, characterized in that, The front side of the flip-up buckle has a rotating shaft protruding from it, and the side wall of the irregular groove has an opening to accommodate the rotating shaft. The rear end of the flip-up buckle extends downward to form a fastening part. The side of the fastening part is used to fit against the outer side wall of the outer shell. The middle part of the flip-up buckle protrudes outward to form a stop part to prevent the rotating shaft from being directly subjected to tensile force.
5. The optical cable tension clamp as described in claim 4, characterized in that, The side of the flip-up hook and the side wall of the irregular groove are also connected by a snap fastener to secure the flip-up hook contained in the irregular groove.
6. The optical cable tension clamp as described in claim 1, characterized in that, The rotation locking mechanism includes multiple high-position limiting buckles and multiple low-position limiting buckles arranged circumferentially along the rotation axis. The limiting ring is selectively installed between the high-position limiting buckles and the low-position limiting buckles or below the low-position limiting ring. The bottom end of the high-position limiting buckle facing the low-position limiting buckle is provided with a limiting protrusion. The limiting ring is provided with a groove that matches the limiting protrusion. When the limiting ring is installed between the high-position limiting buckle and the low-position limiting buckle, the limiting protrusion is accommodated in the groove, and the inner shell is fixed relative to the outer shell.
7. The optical cable tension clamp as described in claim 6, characterized in that, The high-position limiting buckle and the low-position limiting buckle are staggered in the same direction on the rotating shaft. Both the high-position limiting buckle and the low-position limiting buckle are L-shaped structures protruding from the end of the rotating shaft, and there is a gap between the high-position limiting buckle and its adjacent low-position limiting buckle.
8. The optical cable tension clamp as described in any one of claims 1 to 7, characterized in that, The inner shell and outer shell are also equipped with a limiting mechanism to limit the rotation angle of the inner shell relative to the outer shell. The center line of the narrowest part of the cable winding channel formed by the inner shell and the outer shell is aligned with the center line of the inlet hole.
9. The optical cable tension clamp as described in claim 8, characterized in that, The limiting mechanism includes a limiting protrusion protruding from the bottom of the inner shell and a rotating limiting groove located on the bottom wall of the slot and adapted to the limiting protrusion. When the limiting ring is installed below the low-position limiting ring, the limiting protrusion is accommodated in the rotating limiting groove. The rotation angle of the inner shell is limited by setting the length of the rotating limiting groove.
10. The optical cable tension clamp as described in claim 8, characterized in that, The outer shell is equipped with a hook, and the hole on the outer shell for the hook to pass through is the mounting hole. The center line of the cable winding channel formed by the inner shell and the outer shell at the narrowest point and the center line of the inlet hole are all on a straight line.