Anti-loosening optical cable connector box
By using a compression spring and movable rod design, combined with a cable clamping groove and anti-loosening clip, the problem of insufficient connection strength in the optical cable splice box is solved, achieving stable clamping and sealing effects, and improving the connection stability and sealing performance of the optical cable splice box.
Patent Information
- Application Number
- CN202520819859.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-04-28
AI Technical Summary
Existing fiber optic splice boxes have low connection strength and poor stability, and are prone to breakage during use, leading to connector breakage.
A compression spring drives the movable block and movable rod to ensure that the anti-loosening clip fits tightly against the optical cable connection. Combined with the cable clamping groove, it achieves stable clamping. The knob and threaded rod enhance the friction locking force, and the protective collar seals the connection port to improve the sealing performance.
It improves the connection strength and stability of the fiber optic splice box, prevents the connector from breaking off, and enhances the sealing performance of the fiber optic splice box.
Smart Images

Figure CN223977398U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical cable communication equipment, and in particular to an anti-loosening optical cable junction box. Background Technology
[0002] Optical fiber splice closures are key equipment in optical fiber communication networks, mainly used for the connection and protection of two or more optical cables. They act as a "black box" ensuring the reliability of optical fiber networks, with a design that balances functionality and environmental adaptability. Widely used in modern communication infrastructure, optical fiber splice closures serve as the splicing part of protective components and are essential for optical fiber splicing in optical cable line construction. They are also one of the most important pieces of equipment, as the quality of the optical fiber splice closure directly affects the quality and lifespan of the optical cable line.
[0003] For example, patent number (CN222167293U) discloses a horizontal optical cable junction box that is easy to install flexibly, belonging to the technical field of horizontal optical cable junction boxes. It includes a housing A and a housing B, which are detachably connected. A support assembly is installed on the outer surface of housing A, and a protective assembly is installed on the outer surface of housing B. By moving the bottom plate of housing A closer to the support surface, the distance between housing A and the bottom plate can be adjusted and fixed using a telescopic frame. A locking element is used to pass through the slotted hole in the bottom plate to fix housing A to the support surface. The installation process is convenient, the support stability is good, and the applicability is wide. When the bottom plate is placed relative to the metal support surface, the magnetic attraction of the permanent magnet assists in positioning the bottom plate. The housing A and the support assembly can be assembled according to the needs of use. The assembly plate of the support assembly is snapped into the inside of the assembly groove, and bolts are used to press the assembly plate into the threaded groove, making the assembly process convenient.
[0004] Currently, due to certain limitations in its fixing structure, the optical cable splice box has low connection strength and poor stability. After a period of use, it is prone to breakage, resulting in broken connectors, which is not conducive to improving the stability of the optical cable splice box connection. Utility Model Content
[0005] To overcome the problem that the connection strength of the fiber optic splice box is limited and that it is prone to breakage after a period of use, resulting in the breakage of the connector, which is not conducive to improving the stability of the fiber optic splice box connection.
[0006] The technical solution of this utility model is as follows: an anti-loosening optical cable junction box, including a junction box bottom shell and a junction box top cover. A wiring board is fixedly installed inside the junction box bottom shell. Fixing seats are fixedly installed on both the left and right sides inside the junction box bottom shell. Cable clamping grooves are fixedly installed on both the front and rear sides inside the fixing seats. Connecting sleeves are fixedly installed at both the front and rear ends inside the junction box bottom shell. A compression spring is fixedly installed inside the connecting sleeve. A movable block is fixedly installed on the compression spring. A movable rod is fixedly installed on the movable block. A compression rod is fixedly installed at the end of the movable rod away from the movable block to the outside of the connecting sleeve. An anti-loosening clip is fixedly installed at the end of the compression rod away from the movable rod to the inside of the cable clamping groove. A locking seat is fixedly installed at both the left and right ends inside the junction box bottom shell and the junction box top cover. A connection port is opened at both the left and right ends of the junction box bottom shell and the junction box top cover. A protective collar is provided on the inner side of the locking seat.
[0007] Preferably, the cable slot can accommodate the optical cable connector, the compression spring can drive the movable block to move, causing the movable rod to drive the compression rod to move, the anti-loosening clip can tightly fit the optical cable connector, and together with the cable slot, it can achieve a stable clamping function for the optical cable connector. The knob can rotate the threaded rod, so that the locking block tightly fits the fixing seat, increasing friction and locking the compression rod. The protective collar can be fitted onto the surface of the optical cable connector, and the corresponding locking seat can stably lock the protective collar. The protective collar can seal and fill the connection port and the optical cable connector, improving the sealing performance of the optical cable splice box. The connector board of the optical cable splice box is a core component for optical fiber splicing, distribution and protection, realizing efficient and reliable optical fiber management and ensuring long-term stability.
[0008] Preferably, the surface of the movable block is slidably connected to the connecting sleeve, and the surface of the movable rod is slidably connected to the connecting sleeve.
[0009] Preferably, the extrusion rod has an L-shaped structure design, the extrusion rod is slidably connected to the fixed seat, and the anti-loosening clip and the wire clamping groove are mutually compatible.
[0010] Preferably, a threaded rod is provided on the inner side of the extrusion rod, a locking block is provided at one end of the threaded rod, and a knob is fixedly installed at the other end of the threaded rod.
[0011] Preferably, the surface of the threaded rod is threadedly connected to the extrusion rod, and the lower end of the threaded rod is rotatably connected to the locking block.
[0012] Preferably, the bottom shell of the junction box and the top cover of the junction box are connected by bolts, and the locking seat is engaged with the protective collar.
[0013] Preferably, the protective collar and the connecting port are compatible with each other, and the front and rear sides of the protective collar are provided with connecting through holes.
[0014] The beneficial effects of this utility model are:
[0015] This anti-loosening fiber optic splice box utilizes a compression spring to drive a movable block and a movable rod, causing the compression rod to tightly engage the anti-loosening clip with the fiber optic cable connector. This, combined with the cable clamping groove, provides a stable clamping function for the fiber optic cable connector. By rotating the knob and threaded rod, the locking block tightly engages with the fixing seat, locking the compression rod and ensuring the anti-loosening clip remains in its clamping state. This further enhances connection strength and stability, preventing connector breakage due to detachment. The protective collar is then fitted onto the surface of the fiber optic cable connector and inserted into the locking seat, facilitating the closing of the splice box cover. The cover is secured with bolts, and the upper and lower locking seats stably engage the protective collar, sealing the connection port and fiber optic cable connector. This protects the fiber optic cable connector and improves the sealing performance of the fiber optic splice box. Attached Figure Description
[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the anti-loosening optical cable junction box of this utility model.
[0017] Figure 2 The diagram shown is a three-dimensional structural schematic of the connector box cover of this utility model.
[0018] Figure 3 The diagram shown is a three-dimensional structural schematic of the bottom shell of the connector box of this utility model.
[0019] Figure 4 The diagram shown is a three-dimensional structural schematic of the fixing base of this utility model;
[0020] Figure 5 The diagram shown is a three-dimensional structural schematic of the anti-loosening clip of this utility model.
[0021] Explanation of reference numerals in the attached drawings: 1. Junction box bottom shell; 2. Junction box top cover; 3. Terminal block; 4. Fixing base; 5. Wire clamping groove; 6. Connecting sleeve; 7. Compression spring; 8. Movable block; 9. Movable rod; 10. Compression rod; 11. Anti-loosening clip; 12. Clamping seat; 13. Connection port; 14. Protective collar; 15. Threaded rod; 16. Locking block; 17. Connection through hole. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0023] Please see Figures 1-5This utility model provides an embodiment of an anti-loosening optical cable junction box, including a junction box bottom shell 1 and a junction box top cover 2. A wiring plate 3 is fixedly installed inside the junction box bottom shell 1. Fixing seats 4 are fixedly installed on both the left and right sides inside the junction box bottom shell 1. Cable clamping grooves 5 are fixedly installed on both the front and rear sides inside the fixing seats 4. Connecting sleeves 6 are fixedly installed at both the front and rear ends inside the junction box bottom shell 1. A compression spring 7 is fixedly installed inside the connecting sleeve 6. A movable block 8 is fixedly installed on the compression spring 7. A movable rod 9 is fixedly installed on the movable block 8. A compression rod 10 is fixedly installed at the end of the movable rod 9 away from the movable block 8 to the outside of the connecting sleeve 6. An anti-loosening clip 11 is fixedly installed at the end of the compression rod 10 away from the movable rod 9 to the inside of the cable clamping groove 5. Both the bottom shell 1 and the top cover 2 of the junction box have locking seats 12 fixedly installed at both ends. Both ends of the bottom shell 1 and the top cover 2 of the junction box have connection ports 13. The inner side of the locking seat 12 is provided with a protective collar 14. The optical cable connection needs to pass through the cable clamping groove 5. The compression spring 7 drives the movable block 8 to move, so that the movable rod 9 drives the compression rod 10 to move, which further drives the anti-loosening clip 11 to tightly fit the optical cable connection. Together with the cable clamping groove 5, it realizes the stable clamping function of the optical cable connection. Before connecting the optical cable, the protective collar 14 needs to be sleeved on the surface of the optical cable connection. After the optical cable is connected, the protective collar 14 is inserted into the locking seat 12 to facilitate the closing of the top cover 2 of the junction box and the fixing with bolts, so that the protective collar 14 seals and fills the connection port 13 and the optical cable connection.
[0024] Please see Figures 3-5 In this embodiment, the surface of the movable block 8 is slidably connected to the connecting sleeve 6, the surface of the movable rod 9 is slidably connected to the connecting sleeve 6, the pressing rod 10 has an L-shaped structure design, the pressing rod 10 is slidably connected to the fixed seat 4, the anti-loosening clip 11 and the wire clamping groove 5 are mutually adapted, the inner side of the pressing rod 10 is provided with a threaded rod 15, one end of the threaded rod 15 is provided with a locking block 16, the other end of the threaded rod 15 is fixedly installed with a knob, the surface of the threaded rod 15 is threadedly connected to the pressing rod 10, and the lower end of the threaded rod 15 is connected to the locking block 16. The optical cable connector needs to pass through the cable clamping groove 5. The compression spring 7 drives the movable block 8 to move, which in turn drives the movable rod 9 to move the compression rod 10. This further drives the anti-loosening clip 11 to tightly fit the optical cable connector. Together with the cable clamping groove 5, it achieves a stable clamping function for the optical cable connector. By rotating the knob and the threaded rod 15, the locking block 16 tightly fits the fixing seat 4, increasing the friction and locking the compression rod 10. This ensures that the anti-loosening clip 11 is always in the clamping state, which helps to improve the stability of the optical cable junction box connection.
[0025] Please see Figures 1-3In this embodiment, the bottom shell 1 and the top cover 2 of the junction box are connected by bolts. The locking seat 12 and the protective sleeve 14 are locked together. The protective sleeve 14 and the connection port 13 are adapted to each other. The front and rear sides of the protective sleeve 14 are provided with connection through holes 17. Before connecting the optical cable, the protective sleeve 14 needs to be sleeved on the surface of the optical cable connection. After the optical cable is connected, the protective sleeve 14 is locked into the locking seat 12, which makes it easy to close the top cover 2 of the junction box and fix it with bolts. The upper and lower locking seats 12 stably lock the protective sleeve 14, so that the protective sleeve 14 seals and fills the connection port 13 and the optical cable connection, which is beneficial to protect the optical cable connection and improve the sealing of the optical cable junction box.
[0026] During operation, the optical cable connector needs to pass through the cable clamping groove 5. The compression spring 7 drives the movable block 8 to move, which in turn drives the movable rod 9 to move the compression rod 10. This further drives the anti-loosening clip 11 to tightly fit the optical cable connector, thus achieving a stable clamping function for the optical cable connector in conjunction with the cable clamping groove 5. By rotating the knob and the threaded rod 15, the locking block 16 is made to tightly fit the fixing seat 4, increasing the friction and locking the compression rod 10. This ensures that the anti-loosening clip 11 is always in the clamping state. Before connecting the optical cable, the protective collar 14 needs to be fitted onto the surface of the optical cable connector. After connecting the optical cable, the protective collar 14 is then inserted into the clamping seat 12 to facilitate the closing of the connector box cover 2 and fixing it with bolts. The upper and lower corresponding clamping seats 12 stably clamp the protective collar 14, so that the protective collar 14 seals and fills the connection port 13 and the optical cable connector.
[0027] Through the above steps, the optical cable connector needs to pass through the cable clamping groove 5. The compression spring 7 drives the movable block 8 to move, which in turn drives the movable rod 9 to move the compression rod 10. This further drives the anti-loosening clip 11 to tightly fit the optical cable connector. Together with the cable clamping groove 5, it achieves a stable clamping function for the optical cable connector. This solves the problem that the connection strength of the optical cable junction box is limited, and after a period of use, it is easy to break off, resulting in the connector breaking. This is not conducive to improving the stability of the optical cable junction box connection.
Claims
1. A splice closure for optical cables, comprising a closure base (1), characterised in that: The utility model also includes joint box upper cover (2), the inside fixed mounting of joint box bottom shell (1) has wiring board (3), the inside fixed mounting of left and right sides of joint box bottom shell (1) has fixed seat (4), the inside fixed mounting of front and back sides of fixed seat (4) has clamping wire slot (5), the inside fixed mounting of front and back ends of joint box bottom shell (1) has connecting sleeve (6), the inside fixed mounting of connecting sleeve (6) has extrusion spring (7), the fixed mounting of extrusion spring (7) has movable block (8), the fixed mounting of movable block (8) has movable rod (9), the fixed mounting of the one end of movable rod (9) away from movable block (8) and extending to the outside of connecting sleeve (6) has extrusion rod (10), the fixed mounting of the one end of extrusion rod (10) away from movable rod (9) and extending to the inside of clamping wire slot (5) has anti looseness clamping piece (11), the inside fixed mounting of joint box bottom shell (1) and joint box upper cover (2) and left and right ends has clamping seat (12), the left and right ends of joint box bottom shell (1) and joint box upper cover (2) are all set up with connecting mouth (13), the inside of clamping seat (12) is provided with protective sleeve ring (14).
2. The latching fiber optic cable splice closure of claim 1, wherein: The surface of the movable block (8) is slidably connected with the connecting sleeve (6), and the surface of the movable rod (9) is slidably connected with the connecting sleeve (6).
3. The latching fiber optic cable splice closure of claim 1, wherein: The extrusion rod (10) is designed in an L-shaped structure, the extrusion rod (10) is slidably connected with the fixed seat (4), and the anti looseness clamping piece (11) is adapted with the clamping wire slot (5).
4. The latching fiber optic cable splice closure of claim 3, wherein: The inside of the extrusion rod (10) is provided with a threaded rod (15), one end of the threaded rod (15) is provided with a locking block (16), and the other end of the threaded rod (15) is fixedly installed with a knob.
5. The latching fiber optic cable splice closure of claim 4, wherein: The surface of the threaded rod (15) is threadedly connected with the extrusion rod (10), and the lower end of the threaded rod (15) is rotatably connected with the locking block (16).
6. The latching fiber optic cable splice closure of claim 1, wherein: The joint box bottom shell (1) and the joint box upper cover (2) are connected by bolts, and the clamping seat (12) is clampedly connected with the protective sleeve ring (14).
7. The latching fiber optic cable splice closure of claim 6, wherein: The protective sleeve ring (14) is adapted with the connecting mouth (13), and the inside of the protective sleeve ring (14) is provided with connecting through holes (17) on the front and back sides.
Citation Information
Patent Citations
Horizontal optical cable connector box convenient for flexible installation
CN222167293U