ODF line anti-pulling reinforcing sleeve

Abstract

The utility model relates to optical fiber communication equipment technical field discloses ODF line anti -pulling reinforcing sleeve, including shell, clamping mechanism and buffer mechanism, the outside rotation of shell is connected with rotary cover, the inside fixed connection with annular rack of rotary cover, the inside rotation of shell is connected with screw rod, the end fixed connection with the gear of annular rack meshing of screw rod, the outside screw thread connection of screw rod has taper block, the inside fixed connection with fixed cylinder of shell, the inside sliding connection with fixed rod of fixed cylinder, the end connection with clamping plate of fixed rod, taper block abuts at clamping plate outside, the inside of clamping plate is equipped with sliding slot, the inside fixed connection with limiting rod of sliding slot, the outside sliding connection with sliding block of limiting rod. The utility model discloses buffer mechanism that is set up by sliding block and buffer spring in the inside of clamping plate, utilizes the friction force transmission tension of flexible gasket and optical fiber, has realized the instantaneous pulling impact of the harm to optical fiber conversion for controllable elastic deformation.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber communication equipment technology, and in particular to an ODF cable anti-pull reinforcement sleeve. Background Technology

[0002] As a core device in fiber optic communication networks used for fiber optic terminal connection and line scheduling, fiber optic distribution frames not only house a large number of fiber optic patch cords and pigtails, but also need to fix fiber optic lines to ensure the stability of signal transmission. When laying and connecting existing fiber optic distribution frames, construction workers use nylon cable ties or metal clips to bind and secure the fiber optic cables. The rigid connection method directly locks the fiber optic cables to the fixed ports of the distribution frame.

[0003] Traditional rigid fixing structures ignore the physical characteristics of fiber optic cables, such as their fragility and poor tensile strength. During subsequent line maintenance, troubleshooting, or expansion, the dragging and pulling actions of operators on adjacent cables can generate instantaneous axial impact forces. Because rigid fixing structures lack elastic buffer space and force relief mechanisms, the externally applied axial tensile force will bypass the fixing point and be directly transmitted to the extremely fragile fusion splice or ceramic ferrule connection of the fiber. When the direct and rigid tensile impact force exceeds the bearing limit of the fiber connection point, it can lead to serious consequences such as fiber core breakage, loosening of connectors, or even interruption of the entire link signal transmission.

[0004] Therefore, this utility model proposes an ODF wire anti-pull reinforcement sleeve to address the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems in the existing technology, the rigid connection structure of the optical fiber distribution frame line fixing device generally leads to the lack of buffer protection mechanism, and the uneven force of the traditional clamping method is prone to damage to the cable sheath. The present invention aims to provide an ODF line anti-pull reinforcement sleeve with an improved structure that can effectively solve the above problems.

[0006] This utility model provides an ODF wire anti-pull reinforcement sleeve, including: a shell, a clamping mechanism and a buffer mechanism. A rotating cover is rotatably connected to the outer side of the shell, and a ring rack is fixedly connected to the inner side of the rotating cover. A lead screw is rotatably connected to the inner side of the shell, and a gear that meshes with the ring rack is fixedly connected to the end of the lead screw. A conical block is threadedly connected to the outer side of the lead screw. A fixed cylinder is fixedly connected to the inner side of the shell, and a fixed rod is slidably connected to the inner side of the fixed cylinder. The fixed rod extends out of the end of the fixed cylinder and is fixedly connected to the clamping plate. A return spring is sleeved on the outer side of the fixed cylinder, and both ends of the return spring are fixedly connected to the clamping plate and the fixed cylinder, respectively. The side wall of the conical block abuts against the outer side of the clamping plate.

[0007] The clamping plate has a groove on its inner side, a limit rod is fixedly connected inside the groove, a slider is slidably connected to the outside of the limit rod, buffer springs are fixedly connected to both sides of the slider, the ends of the buffer springs are fixedly connected to the inner wall of the groove, and a flexible pad is fixedly connected to the outside of the slider, and the flexible pad is slidably connected to the inner side of the clamping plate.

[0008] Preferably, ball heads are fixedly connected to both the front and rear ends of the inner side of the rotating cover, and positioning holes adapted to the ball heads are opened on the outer side of the outer shell. The ball heads are engaged in the positioning holes, and the positioning holes are evenly distributed along the circumference of the outer shell.

[0009] Preferably, the lead screw is distributed along the axial direction of the housing, the conical block slides against the inner wall of the housing on the side near the inner wall of the housing, and the side of the conical block near the clamping plate is provided with an inclined surface, which slides in contact with the outer side of the clamping plate.

[0010] Preferably, the fixing cylinder is vertically fixed to the inner wall of the outer shell, the fixing rod is clearance-fitted with the inner wall of the fixing cylinder, the return spring is a compression spring, and the return spring is sleeved on the outside of the fixing rod, and the fixing rod restricts the clamping plate from moving radially along the outer shell.

[0011] Preferably, the slide groove is opened along the length direction of the clamping plate, the limiting rod passes through the center of the slider, the slider slides along the axial direction of the limiting rod, and the buffer springs are respectively sleeved on the limiting rod at the front and rear ends of the slider.

[0012] Preferably, the inner surface of the flexible pad is arc-shaped, and the flexible pad is made of high-friction coefficient rubber. The flexible pad and the slider are fixedly connected by adhesive bonding, and the shape of the flexible pad is adapted to the inner side of the clamping plate.

[0013] Preferably, the clamping plates are provided in several groups, and the several groups of clamping plates are arranged in a circumferential array along the central axis of the outer shell. The number of lead screws, gears and conical blocks corresponds one-to-one with the number of clamping plates, and the ring rack meshes with all gears at the same time.

[0014] Preferably, the right end of the outer shell has a flared structure, the inner diameter of the left end of the outer shell is smaller than the inner diameter of the right end, the rotating cover is rotatably sleeved on the outer side of the left end of the outer shell, and the annular rack is located in the middle of the inner side of the rotating cover.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model solves the problem that existing fiber optic fixing devices typically use rigid clamping and lack buffer protection, which causes the impact force to act directly on the fragile splice point when the cable is subjected to accidental axial pulling, thus causing line interruption or damage. It achieves the effect of converting instantaneous pulling impact into controllable elastic deformation and displacement, effectively absorbing vibration energy, and protecting the stability and long-term reliability of fiber optic connection points.

[0017] 2. This utility model, by setting up a synchronous clamping mechanism composed of a rotating cover, a ring rack, multiple sets of lead screws and gears and a conical block, converts the rotational motion into a synchronous radial contraction motion of multiple clamping plates toward the central axis. Combined with the locking structure of the ball head and the positioning hole, it solves the problems of uneven force on the optical fiber clamping which easily damages the cable sheath, cumbersome operation, and easy loosening due to vibration after fixing in the prior art. It achieves the effects of uniform force on the optical fiber cable, automatic centering and fixing, stable locking force, and convenient and efficient operation. Attached Figure Description

[0018] Figure 1 This is a perspective view of the ODF wire anti-pull reinforcement sleeve proposed in this utility model;

[0019] Figure 2 This is a partial structural exploded view of the ODF wire anti-tension reinforcement sleeve proposed in this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0021] Figure 4 This is a partial structural exploded view of the clamping mechanism of the ODF wire anti-pull reinforcement sleeve proposed in this utility model;

[0022] Figure 5 This is a partial structural exploded view of the buffer mechanism of the ODF line anti-pull reinforcement sleeve proposed in this utility model.

[0023] Legend:

[0024] 1. Outer shell; 2. Clamping mechanism; 21. Rotating cover; 22. Ring rack; 23. Ball head; 24. Positioning hole; 25. Gear; 26. Lead screw; 27. Conical block; 28. Clamping plate; 29. ​​Fixed cylinder; 210. Fixed rod; 211. Return spring; 3. Buffer mechanism; 31. Flexible pad; 32. Slider; 33. Slide groove; 34. Limiting rod; 35. Buffer spring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] Example:

[0027] Please refer to Figures 1 to 5This utility model provides an ODF cable anti-pull reinforcement sleeve, which aims to solve the problem that existing fiber optic fixing devices mostly use rigid clamps and lack buffer structures, causing the impact force to act directly on the splice point when the cable is accidentally pulled, thereby causing line interruption or damage.

[0028] Please refer to Figure 1 and Figure 2 The ODF cable anti-pull reinforcement sleeve includes an outer shell 1, and a clamping mechanism 2 and a buffer mechanism 3 disposed on the outer shell 1. The outer shell 1 serves as the mounting base and fiber optic channel for the reinforcement sleeve, accommodating and protecting the internal components. The clamping mechanism 2 is mainly disposed in the circumferential direction of the outer shell 1, used to achieve radial synchronous clamping of the optical fiber passing through the inner shell 1. The buffer mechanism 3 is combined between the end of the clamping mechanism 2 and the contact surface of the optical fiber, used to provide axial elastic buffer displacement. A rotating cover 21 is rotatably connected to the outside of the outer shell 1. The right end of the outer shell 1 has a flared structure, and the inner diameter of the left end of the outer shell 1 is smaller than the inner diameter of the right end. The rotating cover 21 is rotatably sleeved on the outside of the left end of the outer shell 1. A ring rack 22 is fixedly connected to the middle of the inner side of the rotating cover 21. Several sets of lead screws 26 are rotatably connected inside the outer shell 1. The lead screws 26 are distributed along the axial direction of the outer shell 1. A gear 25 is fixedly connected to the left end of the lead screw 26. The gear 25 meshes with the ring rack 22. The ring rack 22 meshes with all gears 25 simultaneously. The outer side of the lead screw 26 is threaded. A conical block 27 is provided, with its side near the inner wall of the outer shell 1 slidingly against the inner wall of the outer shell 1. An inclined surface is provided on the side of the conical block 27 near the central axis of the outer shell 1. A fixed cylinder 29 is fixedly connected to the inner side of the outer shell 1, vertically fixed to the inner wall of the outer shell 1. A fixed rod 210 is slidably connected to the inner side of the fixed cylinder 29, with a clearance fit between the fixed rod 210 and the inner wall of the fixed cylinder 29. The end of the fixed rod 210 extending out of the fixed cylinder 29 is fixedly connected to a clamping plate 28, and the fixed rod 210 restricts the clamping... Plate 28 moves radially along the outer shell 1. A return spring 211 is sleeved on the outside of the fixed cylinder 29. The return spring 211 is a compression spring. The two ends of the return spring 211 are fixedly connected to the outer wall of the clamping plate 28 and the outer wall of the fixed cylinder 29, respectively. The inclined surface of the side wall of the conical block 27 abuts against the outside of the clamping plate 28. Several sets of clamping plates 28 are provided. Several sets of clamping plates 28 are arranged in a circumferential array along the central axis of the outer shell 1. The number of lead screws 26, gears 25 and conical blocks 27 corresponds one-to-one with the number of clamping plates 28.

[0029] Please refer to Figure 3 , Figure 4 and Figure 5Ball heads 23 are fixedly connected to both the front and rear ends of the inner side of the rotating cover 21. Positioning holes 24, which are adapted to the ball heads 23, are opened on the outer side of the outer shell 1. The positioning holes 24 are evenly distributed along the circumference of the outer shell 1. The ball heads 23 are engaged inside the positioning holes 24 to achieve positioning and locking of the rotating cover 21. For the core buffer mechanism 3, a sliding groove 33 is opened on the inner side of the clamping plate 28. The sliding groove 33 is opened along the length direction of the clamping plate 28. A limiting rod 34 is fixedly connected inside the sliding groove 33. The limiting rod 34 extends along the length direction of the sliding groove 33. A slider 32 is slidably connected to the outer side of the limiting rod 34. The limiting rod 34 passes through the center of the slider 32, restricting the slider 32 to slide only along the axial direction of the limiting rod 34. Buffer springs 35 are fixedly connected to both the front and rear sides of the slider 32. The other end of the buffer spring 35 is connected to... The inner wall of the end of the slide groove 33 is fixedly connected, and the buffer springs 35 are respectively sleeved on the two ends of the limiting rod 34 located before and after the slider 32. A flexible pad 31 is fixedly connected to the outside of the slider 32. The flexible pad 31 and the slider 32 are fixedly connected by adhesive. The flexible pad 31 is slidably connected to the inner side of the clamping plate 28. At the same time, the inner surface of the flexible pad 31 is arc-shaped. The flexible pad 31 is made of high friction coefficient rubber. The shape of the flexible pad 31 matches the inner side of the clamping plate 28. The structure composed of the flexible pad 31, the slider 32, the limiting rod 34 and the buffer spring 35 ensures that when the flexible pad 31 is in close contact with the optical fiber cable, it can absorb and offset the axial tensile impact force applied externally through the reciprocating movement of the slider 32 in the slide groove 33 and the elastic deformation of the buffer spring 35.

[0030] In a preferred embodiment, in order to achieve precise positioning and prevent loosening of the rotating cover 21 after adjustment, ball heads 23 are fixedly connected to both the front and rear ends of the inner side of the rotating cover 21. A positioning hole 24 adapted to the ball head 23 is opened at the left end of the outer side of the outer shell 1. The positioning holes 24 are evenly distributed along the circumference of the outer shell 1. The ball head 23 is inserted into the positioning hole 24 to form a snap-fit. The fit between the ball head 23 and the positioning hole 24 restricts the free rotation of the rotating cover 21 under non-external force.

[0031] In a preferred embodiment, in order to ensure the smoothness of the clamping action and prevent the mechanism from jamming, the side of the conical block 27 near the inner wall of the outer shell 1 is smooth and slides against the inner wall of the outer shell 1. The side of the conical block 27 near the clamping plate 28 is set as a flat inclined surface. The inclined surface slides in contact with the outer wall of the clamping plate 28. The axial movement of the conical block 27 driven by the lead screw 26 can be smoothly converted into the radial movement of the clamping plate 28.

[0032] In a preferred embodiment, to ensure the perpendicularity of the moving direction of the clamping plate 28 and provide a reliable restoring force, the fixing cylinder 29 is vertically welded or integrally formed on the inner wall of the outer shell 1. The fixing rod 210 passes through the inside of the fixing cylinder 29 and is clearance-fitted with the inner wall of the fixing cylinder 29. The restoring spring 211 is a helical compression spring. The restoring spring 211 is sleeved on the part of the fixing rod 210 located between the fixing cylinder 29 and the clamping plate 28. The restoring spring 211 is always in a compressed state to provide a preload force away from the central axis of the outer shell 1.

[0033] As a preferred embodiment, in order to enhance the adaptability to optical fiber cables of different diameters and improve the buffering effect, the inner contact surface of the flexible pad 31 is designed as an arc-shaped structure. The flexible pad 31 is made of silicone rubber with a high coefficient of friction. The back of the flexible pad 31 is bonded and fixed to the outside of the slider 32 with strong adhesive. The shape of the flexible pad 31 is adapted to the inner side of the clamping plate 28 to ensure smooth sliding. The buffer springs 35 are located on both sides of the slider 32 along the length of the slide groove 33. The buffer springs 35 can buffer the axial tensile force in both directions at the same time.

[0034] Working principle:

[0035] When installing the fiber optic cable, first insert the cable into the internal channel from the right end of the outer casing 1. Then, rotate the rotating cover 21 clockwise. The rotating cover 21 drives the inner fixed ring rack 22 to rotate synchronously. The rotation of the ring rack 22 drives the gear 25 meshing with it to rotate synchronously. The rotation of the gear 25 drives the lead screw 26 to rotate. Due to the restriction of the inner wall of the outer casing 1, the conical block 27 cannot rotate with the lead screw 26. Under the action of the thread, the conical block 27 moves to the right along the axis of the lead screw 26. When the conical block 27 moves to the right, the outer inclined surface continuously presses against the corresponding clamping plate. 28, forcing the clamping plate 28 to overcome the resistance of the return spring 211 and move synchronously towards the central axis of the outer shell 1. The sliding cooperation between the fixed cylinder 29 and the fixed rod 210 ensures that the clamping plate 28 remains directionally stable and does not deviate during the movement. When the flexible pad 31 on the inner side of the clamping plate 28 contacts the outer sheath of the optical fiber and applies sufficient clamping force, the rotating cover 21 stops rotating. At this time, the ball head 23 on the rotating cover 21 is inserted into the corresponding positioning hole 24 on the outer shell 1, thereby fixing the rotating cover 21 and firmly clamping and fixing the optical fiber to the center of the reinforcing sleeve.

[0036] After the optical fiber is clamped and fixed by the clamping mechanism 2, the flexible pad 31 directly contacts the cable sheath. The high friction coefficient material of the flexible pad 31 increases the static friction between the flexible pad and the optical fiber. If the fixed optical fiber is subjected to an unexpected axial pulling force from the outside, the pulling force is transmitted to the slider 32 through the friction between the flexible pad 31 and the cable. When the pulling force instantaneously exceeds the preload of the buffer spring 35, the slider 32 overcomes the resistance of the buffer spring 35 and slides along the limit rod 34 in the groove 33 in the direction of the pulling force. During the sliding process, the buffer spring 35 absorbs and stores the impact energy, thereby offsetting and buffering the instantaneous pulling impact force and preventing the impact force from acting directly on the splice point or bending part of the optical fiber. When the pulling force weakens or disappears, the buffer spring 35 releases energy and pushes the slider 32 and the flexible pad 31 back to the initial position. In this way, the buffer mechanism 3 converts the instantaneous pulling impact that damages the optical fiber into controllable elastic deformation and sliding friction energy dissipation.

[0037] When the rotating cover 21 is rotated counterclockwise, the lead screw 26 drives the conical block 27 to move backward to the left. The conical block 27 reduces the pressure on the clamping plate 28. Under the restoring force of the return spring 211, the clamping plate 28 retracts in the direction away from the central axis of the outer shell 1, thereby releasing the optical fiber. The clamping mechanism 2 thus realizes the synchronous clamping or release of the optical fiber.

Claims

1. An ODF wire anti-pull reinforcement sleeve, comprising an outer shell (1), a clamping mechanism (2) and a buffer mechanism (3), wherein a rotating cover (21) is rotatably connected to the outer side of the outer shell (1), an annular rack (22) is fixedly connected to the inner side of the rotating cover (21), a lead screw (26) is rotatably connected to the inner side of the outer shell (1), a gear (25) that meshes with the annular rack (22) is fixedly connected to the end of the lead screw (26), a conical block (27) is threadedly connected to the outer side of the lead screw (26), a fixed cylinder (29) is fixedly connected to the inner side of the outer shell (1), a fixed rod (210) is slidably connected to the inner side of the fixed cylinder (29), the fixed rod (210) extends out of the end of the fixed cylinder (29) and is fixedly connected to the clamping plate (28), and a return spring (211) is sleeved on the outer side of the fixed cylinder (29); Its features are, The inner side of the clamp (28) is provided with a sliding groove (33), a limiting rod (34) is fixedly connected inside the sliding groove (33), a slider (32) is slidably connected to the outside of the limiting rod (34), a buffer spring (35) is fixedly connected to both sides of the slider (32), the end of the buffer spring (35) is fixedly connected to the inner wall of the sliding groove (33), and a flexible pad (31) is fixedly connected to the outside of the slider (32).

2. The ODF wire anti-tension reinforcement sleeve according to claim 1, characterized in that, The rotating cover (21) has ball heads (23) fixedly connected to both the front and rear ends of its inner side. The outer shell (1) has positioning holes (24) that are adapted to the ball heads (23). The ball heads (23) are engaged inside the positioning holes (24). The positioning holes (24) are evenly distributed along the circumference of the outer shell (1).

3. The ODF wire anti-tension reinforcement sleeve according to claim 1, characterized in that, The lead screw (26) is distributed along the axial direction of the outer shell (1). The conical block (27) slides against the inner wall of the outer shell (1) on the side close to the inner wall of the outer shell (1). The conical block (27) has an inclined surface on the side close to the clamping plate (28). The inclined surface slides in contact with the outer side of the clamping plate (28).

4. The ODF wire anti-tension reinforcement sleeve according to claim 1, characterized in that, The fixed cylinder (29) is vertically fixed to the inner wall of the outer shell (1). The fixed rod (210) is clearance-fitted with the inner wall of the fixed cylinder (29). The return spring (211) is a compression spring and is sleeved on the outside of the fixed rod (210). The fixed rod (210) restricts the clamping plate (28) from moving radially along the outer shell (1).

5. The ODF wire anti-tension reinforcement sleeve according to claim 1, characterized in that, The groove (33) is opened along the length direction of the clamp (28), the limiting rod (34) passes through the center of the slider (32), the slider (32) slides along the axial direction of the limiting rod (34), and the buffer springs (35) are respectively sleeved on the two ends of the limiting rod (34) located before and after the slider (32).

6. The ODF wire anti-tension reinforcement sleeve according to claim 1, characterized in that, The inner surface of the flexible pad (31) is arc-shaped, and the material of the flexible pad (31) is high friction coefficient rubber. The flexible pad (31) and the slider (32) are fixedly connected by adhesive. The shape of the flexible pad (31) is adapted to the inner side of the clamp (28).

7. The ODF wire anti-tension reinforcement sleeve according to claim 1, characterized in that, The clamping plates (28) are provided in several groups, and the several groups of clamping plates (28) are arranged in a circumferential array along the central axis of the outer shell (1). The number of the lead screw (26), the gear (25) and the conical block (27) corresponds one-to-one with the number of clamping plates (28). The annular rack (22) meshes with all the gears (25) at the same time.

8. The ODF wire anti-tension reinforcement sleeve according to claim 1, characterized in that, The right end of the outer shell (1) has a flared structure, the inner diameter of the left end of the outer shell (1) is smaller than the inner diameter of the right end, the rotating cover (21) is rotatably sleeved on the outer side of the left end of the outer shell (1), and the annular rack (22) is located in the middle of the inner side of the rotating cover (21).

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