Optical cable joint protection device
By improving the structural design of the optical cable joint protection device, and utilizing connecting rods, fastening plates, and limiting components to achieve rapid locking, the problems of installation complexity and weight of the optical cable joint protection device are solved, and the stability and reliability of the equipment are improved.
Patent Information
- Application Number
- CN202520543008.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Existing fiber optic cable joint protection devices are highly complex to install and maintain. Bolt fixing increases weight and affects equipment stability and reliability, especially in railway communication systems where there is a risk of maintenance delays.
The design employs a lower and upper protective cover, and achieves quick locking through structures such as connecting rods, fastening plates, limit rods, and support frames, reducing the use of bolts. It also utilizes limit components, springs, and limit blocks to achieve easy fixation of optical cables.
It simplifies the installation and disassembly process of optical cable connectors, reduces the weight of the device, improves the stability and reliability of the equipment, and enhances work efficiency.
Smart Images

Figure CN223827871U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical cable joint protection technology, specifically an optical cable joint protection device. Background Technology
[0002] Optical fiber cable, also known as fiber optic cable, is a type of cable used to transmit optical signals. It mainly consists of optical fibers, a protective sheath, filler, reinforcing components, and a protective sheath. The optical fiber connection in the cable joint is a critical part of optical signal transmission; if the connection is damaged or contaminated, the transmission quality of the optical signal will be affected. Therefore, optical fiber joint protection devices are usually installed at the cable joint.
[0003] The installation of the fiber optic cable connector protection device involves the use of numerous bolts for fixing the upper and lower housings. This significantly increases the complexity and time required for installation and maintenance. Each bolt needs to be precisely aligned and tightened, which may require specialized tools and techniques. In emergency situations, this complexity can lead to maintenance delays. Furthermore, bolts and other fasteners increase the overall weight of the device. In railway communication systems, weight is an important consideration as it can affect the stability and reliability of the equipment.
[0004] Therefore, this utility model provides an optical cable connector protection device to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] This utility model provides a fiber optic cable joint protection device, which aims to solve the problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: It includes a lower protective cover, with an upper protective cover rotatably mounted at the rear end of the lower protective cover. Multiple sets of wire holes are provided at both the left and right ends of both the lower and upper protective covers. Multiple sets of positioning blocks are fixedly mounted at the front ends of both the lower and upper protective covers. Connecting rods are rotatably mounted within the multiple sets of positioning blocks on the front side of the upper protective cover. Fastening plates are rotatably mounted at the lower ends of the multiple sets of connecting rods. Limiting rods are movably mounted on the multiple sets of fastening plates. Slots are provided within the multiple sets of positioning blocks on the front side of the lower protective cover. The multiple sets of limiting rods are movably inserted into the multiple sets of slots. Support frames are fixedly mounted at both the left and right ends of the lower protective cover, and limiting components are provided within the support frames.
[0009] As a preferred technical solution of this application, hemispherical protrusions are movably installed on the left and right sides of the upper end of the multiple sets of limiting rods, and the limiting rods are adapted to the inner walls of the multiple sets of slots.
[0010] As a preferred technical solution of this application, the limiting component includes multiple sets of movable slots, which are symmetrically opened at the openings at the upper end of the support frame. Each set of movable slots is equipped with a spring, and each set of movable slots has a limiting block movably installed at its opening. The limiting blocks are symmetrically arranged.
[0011] As a preferred technical solution of this application, multiple sets of grooves are formed in the upper end of the multiple sets of limiting blocks, and fixing plates are fixedly installed on the lower inner walls of the left and right ends of the upper protective cover. Multiple sets of insertion rods are fixedly installed on the lower side of the two sets of fixing plates, and the multiple sets of insertion rods are inserted into the multiple sets of grooves.
[0012] As a preferred technical solution of this application, the lower inner side of the multiple sets of limiting blocks is arc-shaped, and the lower inner side of the multiple sets of limiting blocks is adapted to the lower inner wall of the U-shaped groove of the support frame.
[0013] As a preferred technical solution of this application, the lower inner walls of the multiple sets of limiting blocks and the inner walls of the U-shaped groove of the support frame are all glued with protective pads made of rubber.
[0014] (III) Beneficial Effects
[0015] When the lower and upper protective covers are closed, multiple sets of connecting rods and fastening plates are flipped and locked into multiple sets of positioning blocks on the front side of the lower protective cover, and multiple sets of limiting rods are inserted into multiple sets of slots. This quickly locks the lower and upper protective covers closed and secures the optical cable into the U-shaped grooves on multiple sets of support frames. Multiple sets of springs and multiple sets of limiting blocks work together to quickly limit and fix the optical cable in the U-shaped grooves on the support frames. This makes the installation and removal of the optical cable connectors simpler and faster, greatly improving work efficiency. At the same time, this design also reduces the use of bolts and other fasteners, reduces the weight of the device, and improves the stability and reliability of the equipment. Attached Figure Description
[0016] Figure 1 This is a front view structural diagram of a fiber optic cable connector protection device;
[0017] Figure 2 This is a front view structural diagram of a fiber optic cable connector protection device;
[0018] Figure 3 This is a schematic cross-sectional view of the right side of a fiber optic cable joint protection device.
[0019] Figure 4 This is a schematic cross-sectional view of the support frame in a fiber optic cable joint protection device, viewed from the right.
[0020] Figure 5 for Figure 3 A magnified structural diagram at point A.
[0021] In the picture:
[0022] 1. Lower protective cover; 2. Upper protective cover; 3. Wire hole; 4. Positioning block; 5. Connecting rod; 6. Fastening plate; 7. Limiting rod; 8. Slot; 9. Support frame; 10. Movable groove; 11. Spring; 12. Limiting block; 13. Groove; 14. Fixing plate; 15. Insert rod. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] This utility model provides a fiber optic cable connector protection device, such as... Figure 1-5 As shown, the optical cable connector protection device includes a lower protective cover 1, an upper protective cover 2 rotatably mounted at the rear end of the lower protective cover 1, multiple sets of wire holes 3 at both the left and right ends of the lower protective cover 1 and the upper protective cover 2, multiple sets of positioning blocks 4 fixedly mounted at the front ends of the lower protective cover 1 and the upper protective cover 2, connecting rods 5 rotatably mounted in the multiple sets of positioning blocks 4 on the front side of the upper protective cover 2, fastening plates 6 rotatably mounted at the lower ends of the multiple sets of connecting rods 5, limiting rods 7 movably mounted on the multiple sets of fastening plates 6, slots 8 are opened in the multiple sets of positioning blocks 4 on the front side of the lower protective cover 1, the multiple sets of limiting rods 7 are movably inserted into the multiple sets of slots 8, and support frames 9 are fixedly mounted in both the left and right ends of the lower protective cover 1, with limiting components provided in the support frames 9.
[0025] When it is necessary to close the lower protective cover 1 and the upper protective cover 2, multiple sets of connecting rods 5 and multiple sets of fastening plates 6 are flipped and locked into multiple sets of positioning blocks 4 on the front side of the lower protective cover 1. Then, multiple sets of limiting rods 7 are inserted into multiple sets of slots 8, thereby quickly locking and closing the lower protective cover 1 and the upper protective cover 2. The limiting components can also be used to quickly limit and fix the optical cable connector, reducing the need to use screws to fix the optical cable connector.
[0026] The upper left and right sides of the multiple sets of limiting rods 7 are equipped with movable hemispherical protrusions, and the limiting rods 7 are adapted to the inner walls of the multiple sets of slots 8.
[0027] The hemispherical protrusion at the upper end of the limiting rod 7 not only increases the friction between the limiting rod 7 and the slot 8, making the locking more stable, but also makes it easier for operators to insert the limiting rod 7 into the slot 8 during operation, improving the convenience of operation. When the limiting rod 7 is fully inserted into the slot 8, the hemispherical protrusion can fit tightly against the inner wall of the slot 8, effectively preventing the limiting rod 7 from accidentally slipping out when subjected to external force, thereby ensuring the stability and reliability of the lower protective cover 1 and the upper protective cover 2 when closed.
[0028] The limiting component includes multiple sets of movable slots 10, which are symmetrically opened at the openings at the upper end of the support frame 9. Each set of movable slots 10 is equipped with a spring 11, and each set of movable slots 10 is movably installed with a limiting block 12 at its opening. The limiting blocks 12 are symmetrically arranged at the front and back.
[0029] The optical cable is secured in the U-shaped groove on the support frame 9, and is further restricted within the U-shaped groove on the support frame 9 by the action of springs 11 and limiting blocks 12 in multiple sets of movable grooves 10.
[0030] Multiple sets of grooves 13 are opened in the upper end of multiple sets of limiting blocks 12. Fixing plates 14 are fixedly installed on the lower inner walls of the left and right ends of the upper protective cover 2. Multiple sets of insert rods 15 are fixedly installed on the lower side of the two sets of fixing plates 14. The multiple sets of insert rods 15 are inserted into the multiple sets of grooves 13.
[0031] When the upper protective cover 2 is flipped over and the lower protective cover 1 is closed, the fixing plates 14 at both ends of the upper protective cover 2 are attached to the upper side of the two sets of support frames 9, and multiple sets of insert rods 15 are inserted into multiple sets of grooves 13, thereby limiting the multiple sets of limiting blocks 12 and preventing the multiple sets of limiting blocks 12 from sliding into the multiple sets of movable grooves 10.
[0032] The lower inner side of the multiple sets of limiting blocks 12 is arc-shaped, and the lower inner side of the multiple sets of limiting blocks 12 is adapted to the inner wall of the lower end of the U-shaped groove of the support frame 9.
[0033] This arc-shaped design allows the limiting block 12 to better fit the inner wall of the U-shaped groove of the support frame 9 when subjected to optical cable pressure, thus dispersing the pressure and improving the stability and protection of the optical cable joint. At the same time, the arc-shaped design also facilitates the insertion and fixing of the optical cable, reduces friction and resistance during the installation process, and further improves work efficiency.
[0034] The lower inner walls of the multiple sets of limiting blocks 12 and the inner walls of the U-shaped grooves of the support frame 9 are all glued with rubber protective pads.
[0035] The rubber protective pad has good elasticity and wear resistance, which can effectively prevent direct friction between the optical cable and the inner wall of the U-shaped groove of the support frame 9, protect the surface of the optical cable, and extend the service life of the optical cable and the device. At the same time, the setting of the protective pad also increases the friction between the optical cable and the device, making the optical cable less likely to slip when subjected to external force, further improving the stability and reliability of the optical cable joint.
[0036] Working principle: When it is necessary to protect the optical cable connector, the optical cable is first placed in the U-shaped groove on the support frame 9. Under the action of the spring force of the multiple sets of springs 11, the multiple sets of limiting blocks 12 pop out from the multiple sets of movable grooves 10. The pop-out of the multiple sets of limiting blocks 12 closes the opening of the U-shaped groove on the support frame 9, thereby limiting the optical cable in the U-shaped groove on the support frame 9. Then, the upper protective cover 2 is flipped forward to close with the upper side of the lower protective cover 1, so that the multiple sets of positioning blocks 4 on the front side of the upper protective cover 2 and the multiple sets of positioning blocks 4 on the front side of the lower protective cover 1 are closed. Block 4 is attached, and then the multiple sets of connecting rods 5 and fastening plates 6 on the front of the upper protective cover 2 are locked into the multiple sets of positioning blocks 4 on the front of the lower protective cover 1. At this time, multiple sets of limiting rods 7 are inserted into multiple sets of slots 8 to achieve quick locking and closing of the lower protective cover 1 and the upper protective cover 2. At the same time, multiple sets of fixing plates 14 and multiple sets of insert rods 15 are attached to the two sets of support frames 9 during the flipping process of the upper protective cover 2, and multiple sets of insert rods 15 are inserted into multiple sets of grooves 13, thereby limiting the multiple sets of limiting blocks 12.
[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A protective device for an optical cable connector, comprising a lower protective cover (1), characterized in that: The lower protective cover (1) is rotatably mounted with an upper protective cover (2). Both the lower protective cover (1) and the upper protective cover (2) have multiple sets of wire holes (3) at their left and right ends. Both the lower protective cover (1) and the upper protective cover (2) have multiple sets of positioning blocks (4) fixedly mounted at their front ends. Connecting rods (5) are rotatably mounted in the multiple sets of positioning blocks (4) on the front side of the upper protective cover (2). Fastening plates (6) are rotatably mounted on the lower ends of the multiple sets of connecting rods (5). Limiting rods (7) are movably mounted on the multiple sets of fastening plates (6). Slots (8) are opened in the multiple sets of positioning blocks (4) on the front side of the lower protective cover (1). The multiple sets of limiting rods (7) are movably inserted into the multiple sets of slots (8). Support frames (9) are fixedly mounted in the left and right ends of the lower protective cover (1). Limiting components are provided in the support frames (9).
2. The optical cable joint protection device according to claim 1, characterized in that: The upper left and right sides of the multiple sets of limiting rods (7) are provided with movable hemispherical protrusions, and the limiting rods (7) are adapted to the inner walls of the multiple sets of slots (8).
3. The optical cable joint protection device according to claim 1, characterized in that: The limiting component includes multiple sets of movable slots (10), which are symmetrically opened at the openings at the upper end of the support frame (9). Each set of movable slots (10) is equipped with a spring (11), and each set of movable slots (10) is movably installed with a limiting block (12) at the opening. The limiting blocks (12) are symmetrically arranged at the front and back.
4. The optical cable joint protection device according to claim 3, characterized in that: Multiple sets of grooves (13) are opened in the upper end of the multiple sets of limiting blocks (12). Fixing plates (14) are fixedly installed on the lower inner walls of the left and right ends of the upper protective cover (2). Multiple sets of insert rods (15) are fixedly installed on the lower side of the two sets of fixing plates (14). The multiple sets of insert rods (15) are inserted into the multiple sets of grooves (13).
5. The optical cable joint protection device according to claim 3, characterized in that: The lower inner side of the multiple sets of limiting blocks (12) is arc-shaped, and the lower inner side of the multiple sets of limiting blocks (12) is adapted to the inner wall of the lower end of the U-shaped groove of the support frame (9).
6. The optical cable joint protection device according to claim 3, characterized in that: The lower inner wall of the multiple sets of limiting blocks (12) and the inner wall of the U-shaped groove of the support frame (9) are all glued with rubber protective pads.