Metallic cable terminal box
By employing a limiting plate and baffle structure in the optical cable terminal box, combined with aluminum alloy material and a flip connection design, the problems of loose fiber and pigtail splice points and insufficient capacity of the optical cable terminal box are solved. Stable connection of optical fiber and pigtail and multiple fiber optics can be accommodated, improving protection effect and electrical safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU YONGHENGTONG BROADBAND EQUIP CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-12
AI Technical Summary
In existing optical cable terminal boxes, the heat-shrinkable protective tubes installed at the splice points of optical fibers and pigtails are prone to loosening, leading to breakage between the optical fiber and pigtail at the splice points. In addition, traditional optical cable terminal boxes have a limited capacity for accommodating optical fibers.
Design a metal optical cable terminal box, using aluminum alloy to make the box body, cover plate and fiber splicing tray. By setting limit plates and baffles on the fiber splicing tray, a splicing slot is formed to hold the heat shrink protective tube. The fiber splicing tray and the mounting post are connected by flipping to form a space to accommodate more optical fibers. The combination of limit screws and grounding post improves the structural stability and electrical safety.
It effectively prevents the heat-shrinkable protective tube from detaching, ensures the fixation of the fiber optic and pigtail fusion splice, improves the protection effect, and can accommodate more optical fibers without increasing the lateral volume, thus enhancing electrical safety and signal stability.
Smart Images
Figure CN224354624U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical fiber communication equipment technology, and in particular to a metal optical cable terminal box. Background Technology
[0002] With the large-scale construction of Fiber to the Home (FTTH), networks are profoundly impacting people's lives. In the deployment of fiber optic networks, terminal boxes have become an indispensable communication equipment product for fiber optic terminals. Fiber optic terminal boxes are auxiliary equipment for terminal wiring in fiber optic transmission communication networks. They are suitable for direct and branch splices of indoor fiber optic cables and protect fiber optic connectors. Fiber optic terminal boxes are mainly used for fixing fiber optic cable terminals, splicing fiber optic cables and pigtails, and housing and protecting excess fiber.
[0003] Optical cable terminal boxes typically contain a fusion splice tray with a fusion splice module. This module secures the splice points of the optical fiber and pigtail. Before installation, a heat-shrinkable protective tube is typically fitted over the splice point. However, because the heat-shrinkable tube is used at the splice point, it can easily become loose after being fitted into the slot of the fusion splice module (as illustrated in Chinese Patent: 2016214134504). This can cause the heat-shrinkable tube to detach from the slot, potentially leading to breakage of the splice point due to stress or bending over time. Therefore, further improvements to the optical cable terminal box are necessary to address this issue. Utility Model Content
[0004] The purpose of this invention is to provide a metal optical cable terminal box that offers better protection and can accommodate a greater number of optical fibers.
[0005] To solve the above technical problems, the present invention can be implemented using the following technical solutions:
[0006] A metal optical cable terminal box includes a box body, a cover plate, and a fiber splicing tray. An installation post is provided inside the box body, and the fiber splicing tray is rotatably connected to the installation post. A receiving space is formed between the bottom of the fiber splicing tray and the bottom of the box body. The cover plate covers the top of the box body. Several limiting plates are arranged side-by-side in the middle of the fiber splicing tray, and a splicing groove is formed between the limiting plates. A baffle plate is connected to the top of the limiting plates to cover the splicing groove. Several locking positions are provided on the inner edge of the fiber splicing tray.
[0007] In one embodiment, the top of the limiting plate has a snap-fit portion, and a snap-fit groove is provided on the baffle. The snap-fit groove and the snap-fit portion are interference-fitted to connect the baffle and the limiting plate.
[0008] In one embodiment, the end of the fiber fusion tray that is flipped to connect with the mounting post is provided with a rotating shaft, and the top of the mounting post is provided with a rotating hole corresponding to the rotating shaft. After the rotating shaft is placed in the rotating hole, the rotating shaft can be limited by a limiting screw.
[0009] In one embodiment, the outer edge of the end of the fiber melting tray away from the rotating shaft is provided with a support portion, and a support column corresponding to the support portion is provided on the inner edge of the box body. The support column can support the support portion to support the fiber melting tray.
[0010] In one embodiment, the housing is provided with several grounding posts, and through holes are provided on the side walls of the grounding posts, while clamping screws corresponding to the through holes are provided on the top.
[0011] In one embodiment, the two sides of the box are respectively provided with wire holes for optical cables to pass through, and protective rings can be provided at the wire holes.
[0012] In one embodiment, a DIN clip is installed on the rear side of the housing.
[0013] In one embodiment, a locking slot is provided on the front side of the box, and an adapter seat plate is inserted into the locking slot.
[0014] In one embodiment, the cover plate is provided with a label area.
[0015] In one embodiment, the box body, cover plate and fiber melting tray are all die-cast from aluminum alloy. Beneficial effects
[0016] This utility model relates to a metal optical cable terminal box. Several limiting plates are set on the fusion splice tray, forming a splice slot between them. The heat-shrinkable protective tubes fitted at the splice points of the optical fiber and pigtail can be secured and installed through these slots. After installation, a baffle is used to cover the tube, preventing it from easily detaching from the splice slot and ensuring the splice points are fixed in place. This effectively prevents breakage at the splice points, improving protection. Furthermore, the flip-connection between the fusion splice tray and the mounting post creates a space between the bottom of the tray and the bottom of the box, allowing for the storage of more optical fibers without increasing the lateral volume of the terminal box. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the metal optical cable terminal box of this utility model. Figure 1 ;
[0018] Figure 2 This is a schematic diagram of the structure of the metal optical cable terminal box of this utility model. Figure 2 ;
[0019] Figure 3 This is a schematic diagram of the fiber splicing tray structure of the metal optical cable terminal box of this utility model;
[0020] Figure 4 This is a schematic diagram of the metal optical cable terminal box of this utility model.
[0021] As shown in the attached diagram:
[0022] 100. Housing; 110. Mounting post; 111. Rotation hole; 112. Limit screw; 120. Accommodation space; 130. Support post; 140. Grounding post; 141. Through hole; 142. Clamping screw; 150. Wire hole; 151. Wire guard ring; 160. DIN clip; 170. Locking slot; 180. Adapter base plate;
[0023] 200. Cover plate; 210. Label area;
[0024] 300, Fiber splicing tray; 310, Limiting plate; 311, Snap-fit part; 320, Fiber splicing slot; 330, Baffle; 331, Snap-fit groove; 340, Position; 350, Rotating shaft; 360, Support part. Detailed Implementation
[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0026] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0028] Please see Figures 1 to 4 A metal optical cable terminal box includes a box body 100, a cover plate 200, and a fiber splicing tray 300. An mounting post 110 is provided inside the box body 100. The fiber splicing tray 300 is rotatably connected to the mounting post 110, and a receiving space 120 is formed between the bottom of the fiber splicing tray 300 and the bottom of the box body 100. The cover plate 300 covers the top of the box body 100. Several limiting plates 310 are arranged side-by-side in the middle of the fiber splicing tray 300, and a splicing groove 320 is formed between the limiting plates 310. A baffle plate 330 is connected to the top of the limiting plates 310 to cover the splicing groove 320. Several locking positions 340 are provided at the inner edge of the fiber splicing tray 300.
[0029] Specifically, in this embodiment, the fusion splice tray 300 is flipped and connected to the mounting post 110 inside the housing 100, thereby forming a receiving space 120 between the bottom of the fusion splice tray 300 and the inner bottom of the housing 100. By flipping the fusion splice tray 300, it is convenient to insert optical fibers and store redundant optical fibers. At the same time, the formed receiving space 120 can accommodate and store a larger number of redundant optical fibers without increasing the lateral volume of the terminal box. The optical fibers extending to the fusion splice tray 300 can be coiled and stored along the locking positions 340 on the inner edge of the fusion splice tray 300. The locking positions 340 can also increase the coiling and storage capacity of the fusion splice tray 300 and avoid pulling on the optical fibers. At the same time, it can also avoid excessive bending of the optical fibers to ensure that the bending radius of the optical fibers is ≥30mm.
[0030] In addition, after the optical fiber and pigtail are fused together, a heat-shrinkable protective tube is installed at the fusion splice for protection. The heat-shrinkable protective tube is then clamped into the fusion splice slot 320 formed between the limiting plates 310. After installation, the baffle 330 is connected to the top of the limiting plate 310 to cover and limit the heat-shrinkable protective tube in the fusion splice slot 320. This prevents the fusion splice point of the optical fiber and pigtail from detaching from the fusion splice slot 320, keeping the fusion splice point in a fixed position. This effectively ensures that the fusion splice point of the optical fiber and pigtail will not break. Combined with the protection of the heat-shrinkable protective tube and the baffle 330, the safety and reliability of the optical fiber connection are ensured, ultimately improving the protection effect of the fusion splice point of the optical fiber and pigtail.
[0031] Furthermore, in this embodiment, the housing 100, cover plate 200, and fusion splice tray 300 are all die-cast from aluminum alloy. Compared to traditional plastic (ABS, PC) materials, aluminum alloy has better tensile strength and impact resistance, effectively protecting the internal optical fiber from external damage. It is also lightweight, making it easy to install and transport, and is especially suitable for deployment at high altitudes or in confined spaces. At the same time, the housing 100, cover plate 200, and fusion splice tray 300 made of aluminum alloy have good oxidation resistance and heat dissipation, and can block external electromagnetic interference (EMI), thereby protecting the stability of optical fiber signal transmission.
[0032] Please see Figure 3 In this embodiment, to facilitate the connection between the baffle 330 and the limiting plate 310 to cover and limit the heat shrinkable protective tube in the fusion splice slot 320, a snap-fit portion 311 is formed on the top of the limiting plate 310, and a snap-fit groove 331 corresponding to the snap-fit portion 311 is opened on the baffle 330. After the heat shrinkable protective tube is snapped into the fusion splice slot 320, the snap-fit groove 331 of the baffle 330 and the snap-fit portion 311 on the top of the limiting plate 310 are then press-fitted together to connect the baffle 330 and the limiting plate 310 and limit and cover the heat shrinkable protective tube in the fusion splice slot 320, thereby preventing the fusion splice point of the optical fiber and pigtail in the heat shrinkable protective tube from detaching from the fusion splice slot 320, thus improving the protection of the fusion splice point of the optical fiber and pigtail.
[0033] Please see Figure 1 , Figure 3 and Figure 4 In order to achieve the flipping of the fiber melting tray 300, in this embodiment, a rotating shaft 350 is provided at the end of the fiber melting tray 300 that is flipped and connected to the mounting post 110, and a rotating hole 111 corresponding to the rotating shaft 350 is provided on the top of the mounting post 110. After the rotating shaft 350 is placed in the rotating hole 111, the rotating shaft 350 can be limited by the limiting screw 112. The mounting posts 110 are provided in two sets. During assembly, the two ends of the rotating shaft 350 are placed into the open rotating holes 111 on the top of the two sets of mounting posts 110 respectively. After placement, the limiting screws 112 are screwed into the top of the rotating holes 111. The limiting screws 112 limit the ends and top of the rotating shaft 350, so that the fusion splice tray 300 can be flipped and connected to the mounting posts 110 in the housing 100. This makes the assembly of the fusion splice tray 300 convenient and simple. By flipping the fusion splice tray 300, it is convenient to insert optical fibers and store redundant optical fibers.
[0034] Since one end of the fusion splice tray 300 is connected to the mounting post 110 via a rotating shaft 350, the other end of the fusion splice tray 300 needs to be supported and limited. Therefore, a support portion 360 is provided on the outer edge of the end of the fusion splice tray 300 away from the rotating shaft 350. At the same time, a support post 130 corresponding to the support portion 360 is provided on the inner edge of the housing 100. The support post 130 can support the support portion 360, thereby supporting the fusion splice tray 300. This prevents the fusion splice tray 300 from rotating to the bottom of the housing 100, so that a sufficient accommodating space 120 can be formed between the bottom of the fusion splice tray 300 and the inner bottom of the housing 100, which is convenient for accommodating a larger number of optical fibers.
[0035] Please see Figure 4 To ensure the electrical safety of the terminal box, this embodiment also includes several grounding posts 140 inside the box 100. Through holes 141 are formed on the side walls of the grounding posts 140, and clamping screws 142 corresponding to the through holes 141 are provided on the top. The metal reinforcing core or armor layer of the optical cable is inserted into the through holes 141 of the grounding posts 140, and then the clamping screws 142 are used to tighten and secure the metal reinforcing core or armor layer within the through holes 141. This achieves a grounding connection between the metal reinforcing core or armor layer and the grounding posts 140. Furthermore, the grounding wire can be directly connected through the aluminum alloy box 100, thereby enhancing lightning / static electricity protection capabilities and reducing the impact of external electromagnetic interference on the optical fiber signal, ultimately improving the electrical safety of the terminal box.
[0036] Please see Figure 4 To facilitate the use of the terminal box, this embodiment provides cable holes 150 for optical cables to pass through on both sides of the box body 100, and cable guard rings 151 can be provided at the cable holes 150. The cable holes 150 facilitate the passing of optical cables, while the cable guard rings 151 protect the optical cables and prevent damage to them during the passing process. A DIN clip 160 is installed on the rear side of the box body 100, which allows the DIN-type terminal box in this embodiment to be connected to a predetermined position. In addition, a slot 170 is provided on the front side of the box body 100, and an adapter base plate 180 is inserted into the slot 170. Different types and quantities of adapters can be installed on the adapter base plate 180, and different adapter base plates 180 can be inserted into the slot 170, making it easy to replace the adapter base plate 180. This allows the terminal box to be equipped with different quantities and types of adapters, thereby improving the compatibility of the terminal box.
[0037] Finally, please see Figure 1 or Figure 2To facilitate viewing the model and information of the terminal box, a label area 210 is provided on the cover 200. The corresponding label can be pasted through the label area 210, and the various information of the terminal box can be viewed intuitively through the label, thus making the terminal box more convenient to use.
[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description; however, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model; furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.
Claims
1. A metal optical cable terminal box, characterized in that: It includes a box body, a cover plate, and a fiber optic cable tray. An installation post is provided inside the box body. The fiber optic cable tray and the installation post can be flipped and connected. An accommodating space is formed between the bottom of the fiber optic cable tray and the bottom of the box body. The cover plate covers the top of the box body. The fiber fusion tray has several limiting plates arranged side by side in the middle, and welding grooves are formed between the limiting plates. A baffle is connected to the top of the limiting plates to cover the welding grooves. Several locking positions are provided on the inner edge of the fiber fusion tray.
2. The metal optical cable terminal box according to claim 1, characterized in that: The top of the limiting plate has a snap-fit part, and the baffle has a snap-fit groove. The snap-fit groove and the snap-fit part are interference-fitted to connect the baffle and the limiting plate.
3. The metal optical cable terminal box according to claim 2, characterized in that: The end of the fiber melting tray that is flipped and connected to the mounting post is provided with a rotating shaft, and the top of the mounting post is provided with a rotating hole corresponding to the rotating shaft. After the rotating shaft is placed in the rotating hole, the rotating shaft can be limited by a limiting screw.
4. The metal optical cable terminal box according to claim 3, characterized in that: The end of the fiber melting tray away from the rotating shaft has a support portion on its outer edge, and a support column corresponding to the support portion is provided on the inner edge of the box. The support column can support the support portion to support the fiber melting tray.
5. The metal optical cable terminal box according to claim 1, characterized in that: The box contains several grounding posts, and through holes are provided on the side walls of the grounding posts. A clamping screw corresponding to the through hole is provided on the top.
6. The metal optical cable terminal box according to claim 1, characterized in that: The box body has wire holes on both sides for optical cables to pass through, and protective rings can be installed at the wire holes.
7. The metal optical cable terminal box according to claim 1, characterized in that: The rear side of the box is fitted with a DIN clip.
8. The metal optical cable terminal box according to claim 1, characterized in that: The front side of the box is provided with a locking slot, and an adapter base plate is inserted into the locking slot.
9. The metal optical cable terminal box according to claim 1, characterized in that: The cover plate is provided with a label area.
10. The metal optical cable terminal box according to claim 1, characterized in that: The box body, cover plate, and fiber melting tray are all die-cast from aluminum alloy.