Optical fiber distribution box for protecting optical splitter
Patent Information
- Application Number
- CN202522351673.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-06
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-11-06
AI Technical Summary
目前，光纤分纤箱常采用转轴式箱体，即，箱盖和箱体转动连接，依靠箱盖的扣合来实现光纤分纤箱的密封，箱盖与箱体贴合位置密封差，光纤易容易受到灰尘、潮湿等外界因素影响，导致光纤故障率升高
[0014]与现有技术相比，本实用新型的分光器防护用的光纤分纤箱，通过箱盖扣合于开口端并与箱体密封连接，箱体与箱盖能够形成基础密封层，阻挡大部分外界污染物，利用普通光缆进出孔设置在箱体，皮线光缆进出孔设置在箱盖，实现不同类型线缆的物理隔离，减少箱体内光缆的暴露时间，能够确保箱体内部的整洁；通过第一罩体部的顶面高于第二罩体部，且第一罩体部与第二罩体部之间通过竖向连接壁相连，即第一罩体部、竖向连接壁与第二罩体部组成台阶状的结构，竖向连接壁设有安装口，使得分光器安装在安装口内，然后，通过滑盖罩设在较低的第二罩体部上方并与竖向连接壁相抵，可以实现将分光器遮蔽，从而可以减少分光器暴露面积，以降低分光器被灰尘污染的可能，利用设置有皮线光缆进出孔的皮线光缆安装侧壁位于第二罩体部远离竖向连接壁的一端，使得第二罩体部上部的区域可以进行接线，以在滑盖打开后，能够在维护时可在不开启箱盖的情况下单独维护皮线光缆，而在滑盖朝向第一罩体部滑动至与竖向连接壁相抵以罩设于第二罩体部上的过程中，第二密封翻边与第一密封翻边形成迷宫式密封结构，以从滑盖和箱盖滑动配合的侧边处有效阻隔外部灰尘和湿气侵入箱体内部，降低光纤接续点的氧化风险，且双层密封翻边的滑动配合在多次开闭后仍能保持稳定密封，以确保光纤分纤箱的密封效果。
Smart Images
Figure CN224803272U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical communication equipment technology, and more specifically, to an optical fiber splitter box for the protection of a beam splitter. Background Technology
[0002] Fiber optic distribution boxes for splitter protection are interface devices used for splitting, distributing, and installing optical cables at the end of fiber optic connections, whether outdoors, in corridors, or indoors. Currently, fiber optic distribution boxes often use a hinged enclosure, where the cover and enclosure are rotatably connected. Sealing of the distribution box relies on the cover's snap-fit mechanism. Poor sealing at the cover-to-enclosure contact point makes the optical fibers susceptible to dust, moisture, and other external factors, leading to an increased fiber optic failure rate. Utility Model Content
[0003] The problem this invention addresses is: how to improve the sealing effect of fiber optic distribution boxes.
[0004] To address the aforementioned problems, this utility model provides an optical fiber splitter box for protecting optical splitters, comprising a box body, a box cover, and a sliding cover. The box body is hollow inside and has an open end with a common optical cable inlet / outlet hole. The box cover is fastened to the open end and sealed to the box body. The box cover includes a first cover portion and a second cover portion arranged sequentially in a horizontal direction. The top surface of the first cover portion is higher than that of the second cover portion, and the first cover portion and the second cover portion are connected by a vertical connecting wall. The vertical connecting wall has an installation opening for installing the optical splitter and connecting it to the box body. The second cover is connected to the first cover. At one end of the second cover away from the vertical connecting wall, there is an upwardly extending drop cable mounting sidewall. The drop cable mounting sidewall is provided with drop cable inlet and outlet holes. The sliding cover is slidably connected to the second cover. The sliding cover is used to slide toward the first cover until it abuts against the vertical connecting wall to cover the second cover. The side of the second cover that is slidably engaged with the sliding cover is provided with a first sealing flange. The side of the sliding cover that is slidably engaged with the second cover is provided with a second sealing flange. The second sealing flange and the first sealing flange are slidably sealed together.
[0005] Optionally, the sliding cover includes a waterproof and breathable valve and a foamed silicone rubber strip, wherein the waterproof and breathable valve is threadedly connected to the top of the sliding cover; and the foamed silicone rubber strip is connected between the first sealing flange and the second sealing flange.
[0006] Optionally, the fiber optic distribution box for protecting the optical splitter further includes a pressure strip and an elastic element. The box cover has a groove structure below the first sealing flange. The second sealing flange is inserted between the first sealing flange and the groove structure. The pressure strip is embedded in the groove structure. The elastic element is connected between the pressure strip and the groove structure. The elastic force of the elastic element is used to drive the pressure strip to extend out of the groove structure and abut against the second sealing flange.
[0007] Optionally, the cover also includes a drop cable holder, which is located between the drop cable mounting side wall and the vertical connecting wall.
[0008] Optionally, the drop cable holder is provided with an identification structure, which corresponds to the drop cable inlet / outlet hole and is used to correspond to the user number.
[0009] Optionally, the second cover portion further includes two baffles located between the drop cable holder and the vertical connecting wall, with the space between the two baffles used for storing the drop cable.
[0010] Optionally, the vertical connecting wall is provided with a boss along its circumference, and the boss is provided with a sealing strip for overlapping with the sliding cover.
[0011] Optionally, both the drop cable inlet / outlet and the ordinary cable inlet / outlet are provided with a sealing structure.
[0012] Optionally, the bottom of the box is also provided with multiple wall-mounting holes.
[0013] Optionally, the sliding cover is also connected to the housing via a snap-fit structure.
[0014] Compared with existing technologies, the fiber optic splitter protection box of this utility model features a cover that snaps onto the opening and seals the box body, forming a basic sealing layer that blocks most external contaminants. Ordinary optical cable entry / exit holes are located on the box body, while drop cable entry / exit holes are located on the cover, achieving physical isolation between different types of cables, reducing the exposure time of optical cables inside the box, and ensuring cleanliness inside the box. The top surface of the first cover is higher than the second cover, and the first and second covers are connected by a vertical connecting wall, forming a stepped structure. The vertical connecting wall has an installation opening, allowing the splitter to be installed inside. Then, a sliding cover is placed above the lower second cover and abuts against the vertical connecting wall, allowing the splitter to be securely mounted. The shielding reduces the exposed area of the splitter, thus lowering the possibility of dust contamination. The drop cable mounting sidewall, equipped with drop cable inlet / outlet holes, is located at the end of the second enclosure away from the vertical connecting wall. This allows for wiring in the upper area of the second enclosure, enabling separate maintenance of the drop cable without opening the enclosure cover after the sliding cover is opened. As the sliding cover slides towards the first enclosure and abuts against the vertical connecting wall to cover the second enclosure, the second sealing flange and the first sealing flange form a labyrinthine sealing structure. This effectively prevents external dust and moisture from entering the enclosure from the sliding fit of the sliding cover and the enclosure cover, reducing the risk of oxidation at fiber optic splice points. Furthermore, the sliding fit of the double-layer sealing flanges maintains a stable seal even after multiple openings and closings, ensuring the sealing effect of the fiber optic distribution box. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the fiber optic distribution box for protecting the optical splitter in an embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of the first sealing flange and the second sealing flange before and after sealing in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the sliding cover sliding out of the second cover in an embodiment of this utility model.
[0016] Explanation of reference numerals in the attached figures: 1-Box body; 11-Ordinary optical cable inlet / outlet; 2-Box cover; 2a-First cover section; 2b-Second cover section; 2c-Vertical connecting wall; 2d-Drop optical cable mounting side wall; 21-Mounting port; 211-Boss; 22-Drop optical cable inlet / outlet; 23-First sealing flange; 24-Groove structure; 25-Drop optical cable holder; 26-Side guard; 3-Sliding cover; 31-Second sealing flange; 32-Waterproof and breathable valve; 33-Foamed silicone rubber strip; 4-Pressure strip; 5-Sealing strip; 40-Splitter. Detailed Implementation
[0017] To make the above-mentioned objectives, 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.
[0018] In the attached figures, the X-axis represents the horizontal position, with the positive direction of the X-axis indicating the right side and the negative direction indicating the left side; the Y-axis represents the front-back position, with the positive direction of the Y-axis indicating the rear and the negative direction indicating the front; the Z-axis represents the vertical position, with the positive direction of the Z-axis indicating the top and the negative direction indicating the bottom. It should be noted that the aforementioned representations of the X, Y, and Z axes are merely for the convenience of describing this utility model and 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, and therefore should not be construed as limiting this utility model.
[0019] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in sequences other than those illustrated or described herein.
[0020] Combination Figures 1 to 3 As shown, this utility model provides an optical fiber splitter box for protecting a beam splitter, including a box body 1, a box cover 2, and a sliding cover 3. The box cover 2 is fastened to the open end and sealed to the box body 1. The box cover 2 includes a first cover portion 2a and a second cover portion 2b arranged sequentially in a horizontal direction. The top surface of the first cover portion 2a is higher than that of the second cover portion 2b, and the first cover portion 2a and the second cover portion 2b are connected by a vertical connecting wall 2c. The vertical connecting wall 2c is provided with an installation port 21, which is used for installing the beam splitter 40 and communicates with the box body 1. The second cover portion 2b is away from the vertical connecting wall 2c. One end of the connecting wall 2c is provided with an upwardly extending drop cable mounting side wall 2d, and the drop cable mounting side wall 2d is provided with a drop cable inlet / outlet hole 22; the sliding cover 3 is slidably connected to the second cover part 2b, and the sliding cover 3 is used to slide toward the first cover part 2a until it abuts against the vertical connecting wall 2c to cover the second cover part 2b; the side of the second cover part 2b that is slidably engaged with the sliding cover 3 is provided with a first sealing flange 23, and the side of the sliding cover 3 that is slidably engaged with the second cover part 2b is provided with a second sealing flange 31, and the second sealing flange 31 and the first sealing flange 23 are slidably and sealingly connected.
[0021] Specifically, the box body 1 has a rectangular parallelepiped structure with a hollow interior. The upper end of the box body 1 is an open end. The side wall of the right end of the box cover 2 in the positive X-axis direction can be rotatably connected to the side wall of the right side of the box body 1. That is, the box cover 2 and the box body 1 are connected by flipping and fastening. After the box cover 2 is fastened to the open end of the box body 1, the box body 1 and the box cover 2 form a sealed cavity. In the X-axis direction, the cover 2 includes a first cover portion 2a and a second cover portion 2b. The first cover portion 2a is higher than the second cover portion 2b, and a vertical connecting wall 2c is provided between the first cover portion 2a and the second cover portion 2b. The vertical connecting wall 2c can be integrally connected with the first cover portion 2a and the second cover portion 2b. The vertical connecting wall 2c is provided with a mounting hole 21, which communicates with the interior of the first cover portion 2a. That is, the mounting hole 21 communicates with the sealed cavity formed by the cover 2 and the housing 1. The beam splitter 40 can be partially embedded in the first cover portion 2a through the mounting hole 21. The end of the second cover portion 2b away from the vertical connecting wall 2c, that is, the end of the second cover portion 2b located in the positive Y-axis direction, is provided with an upwardly extending drop cable mounting side wall 2d. The drop cable mounting side wall 2d is opposite to the mounting hole 21, and the drop cable mounting side wall 2d is provided with a drop cable inlet / outlet hole 22. The sliding cover 3 is slidably connected to the second cover 2b. When the sliding cover 3 slides away from the mounting port 21 along the positive Y-axis, the second cover 2b and the mounting port 21 are exposed, allowing the splitter 40 and the drop cable to be connected. When the sliding cover 3 slides towards the mounting port 21 along the negative Y-axis until it abuts against the vertical connecting wall 2c to close, the sliding cover 3 covers the second cover 2b and the mounting port 21, thereby achieving sealed protection for the second cover 2b, the mounting port 21, the splitter 40, and the drop cable. For example, a first sealing flange 23 is provided on the left and right sides of the second cover portion 2b that slides with the sliding cover 3, and a second sealing flange 31 is provided on the left and right ends of the sliding cover 3 that slides with the second cover portion 2b. When the sliding cover 3 slides on the second cover portion 2b toward the mounting opening 21, the second sealing flange 31 slides with the first sealing flange 23 as the sliding cover 3 slides. When the sliding is in place, the second sealing flange 31 and the first sealing flange 23 are sealed together, ensuring the sealing symmetry of the left and right ends of the sliding cover 3 and the second cover portion 2b, thereby ensuring the sealing effect. In addition, the sliding contact between the first sealing flange 23 and the second sealing flange 31 can form a self-cleaning effect, preventing the accumulation of particles from affecting the sealing effect.
[0022] Specifically, when wiring, this fiber optic distribution box can be provided with three ordinary optical cable inlet / outlet holes 11 on the side wall of the box 1 facing the negative Y-axis. Two of the ordinary optical cable inlet / outlet holes 11 are used for straight-through optical cables, and the remaining ordinary optical cable inlet / outlet hole 11 is used for branch optical cables. The straight-through optical cable and the branch optical cable extend into the housing 1 through the ordinary optical cable inlet / outlet 11. The splitter 40 is installed inside the mounting port 21. The straight-through optical cable and the branch optical cable are connected to the interface of the splitter 40 at the point where the mounting port 21 connects to the housing 1. Then, the housing cover 2 is fastened and fixed to the open end of the housing 1. During subsequent wiring, the housing cover 2 will not separate from the housing 1. Then, the sliding cover 3 is opened so that it does not cover the second cover portion 2b of the housing cover 2. The drop cable extends into the upper area of the second cover portion 2b through the drop cable inlet / outlet 22, passes through the second cover portion 2b, and connects to the interface on the splitter 40. Finally, the sliding cover 3 is reset to cover the second cover portion 2b. During subsequent user wiring, only the sliding cover 3 needs to be opened; the splitter 40 does not need to be moved.
[0023] Therefore, in this embodiment, by fastening the cover 2 to the opening end and sealing it with the box body 1, the box body 1 and the cover 2 can form a basic sealing layer, blocking most external pollutants. Using ordinary optical cable inlet / outlet holes 11 in the box body 1 and drop cable inlet / outlet holes 22 in the cover 2, physical isolation of different types of cables is achieved, reducing the exposure time of optical cables inside the box body 1 and ensuring the cleanliness of the inside of the box body 1. Since the top surface of the first cover part 2a is higher than the second cover part 2b, and the first cover part 2a and the second cover part 2b are connected by a vertical connecting wall 2c, the first cover part 2a, the vertical connecting wall 2c, and the second cover part 2b form a stepped structure. The vertical connecting wall 2c has an installation opening 21, allowing the beam splitter 40 to be installed inside the installation opening 21. Then, by covering the lower second cover part 2b with a sliding cover 3 and abutting against the vertical connecting wall 2c, the beam splitter 40 can be shielded. This reduces the exposed area of the splitter 40, thus lowering the possibility of dust contamination. The drop cable mounting sidewall 2d, equipped with drop cable inlet / outlet holes 22, is located at the end of the second enclosure 2b away from the vertical connecting wall 2c. This allows wiring to be performed in the upper area of the second enclosure 2b, enabling separate maintenance of the drop cable without opening the box cover 2 after the sliding cover 3 is opened. During the sliding of the sliding cover 3 towards the first enclosure 2a until it abuts against the vertical connecting wall 2c and covers the second enclosure 2b, the second sealing flange 31 and the first sealing flange 23 form a labyrinthine sealing structure. This effectively prevents external dust and moisture from entering the box from the sliding contact of the sliding cover 3 and the box cover 2, reducing the risk of oxidation at the fiber optic splice points. Furthermore, the sliding contact of the double-layer sealing flanges maintains a stable seal even after multiple openings and closings, ensuring the sealing effect of the fiber optic distribution box.
[0024] Optionally, combined Figure 1 and Figure 2 As shown, the sliding cover 3 includes a waterproof and breathable valve 32 and a foamed silicone rubber strip 33. The waterproof and breathable valve 32 is threaded to the top of the sliding cover 3; the foamed silicone rubber strip 33 is connected between the first sealing flange 23 and the second sealing flange 31.
[0025] Specifically, the waterproof and breathable valve 32 has a valve body that allows air to pass through while preventing liquid water from entering. It is fixed to the top of the sliding cover 3 by a threaded connection, forming a pressure balance channel with the external environment and preventing deformation of the sealing structure due to pressure differences between the inside and outside. When the sliding cover 3 is closed, the foamed silicone rubber strip 33 is compressed and deformed under the pressure of the first sealing flange 23 and the second sealing flange 31, forming a double seal in conjunction with the structural shapes of the first sealing flange 23 and the second sealing flange 31.
[0026] Thus, the waterproof and breathable valve 32 is threaded to the top of the sliding cover 3; the foamed silicone rubber strip 33 is connected between the first sealing flange 23 and the second sealing flange 31, which can prevent external liquid water from entering the box through the top of the sliding cover 3, and at the same time eliminate the risk of deformation of the sealing structure caused by air pressure difference. The deformation of the foamed silicone rubber strip 33 can effectively block dust and moisture from entering from the joint between the sliding cover 3 and the box cover 2, and avoid signal attenuation or connection failure of optical fiber due to contamination.
[0027] Optionally, combined Figure 2 As shown, the fiber optic splitter box for protection of the optical splitter also includes a pressure strip 4 and an elastic element. The box cover 2 has a groove structure 24 below the first sealing flange 23. The second sealing flange 31 is inserted between the first sealing flange 23 and the groove structure 24. The pressure strip 4 is embedded in the groove structure 24. The elastic element is connected between the pressure strip 4 and the groove structure 24. The elastic force of the elastic element is used to drive the pressure strip 4 to extend out of the groove structure 24 and abut against the second sealing flange 31.
[0028] Specifically, the groove structure 24 corresponds to the first sealing flange 23 and is located below the first sealing flange 23. When the sliding cover 3 slides towards the mounting opening 21, the second sealing flange 31 is inserted between the first sealing flange 23 and the groove structure 24. The second sealing flange 31 squeezes the pressure strip 4 and compresses the elastic element. The elastic force of the elastic element pushes the pressure strip 4 upward to abut against the second sealing flange 31, so that the pressure strip 4 and the first sealing flange 23 form a bidirectional clamping, forcing the second sealing flange 31 to fit tightly against the first sealing flange 23. The sidewall of the groove structure 24 restricts the lateral movement of the pressure strip 4, ensuring that the clamping force is evenly distributed on the contact surface of the second sealing flange 31. When the sliding cover undergoes slight deformation due to vibration or temperature changes, the elastic element compensates for the gap change through its own deformation, maintaining the pressure stability of the sealing interface. After the sliding cover 3 is opened, the pressure strip 4 can protrude from the groove structure 24 through the elastic force of the elastic element, which can fill the area between the first sealing flange 23 and the groove structure 24 to ensure that there are no debris under the first sealing flange 23 and to ensure that the sliding cover 3 closes smoothly.
[0029] Thus, by embedding the pressure strip 4 into the groove structure 24 located below the first sealing flange 23, and with the elastic element connected between the pressure strip 4 and the groove structure 24, the elastic force of the elastic element is used to drive the pressure strip 4 and the first sealing flange 23 to clamp the second sealing flange 31. The continuous pressure provided by the elastic element ensures that the second sealing flange 31 is always in close contact with the first sealing flange 23, forming a dynamic sealing barrier. The cooperation between the pressure strip 4 and the groove structure 24 ensures the controllability of the direction of the clamping force, prevents local sealing failure due to component misalignment, and can maintain stable sealing performance under complex environmental conditions, reducing the risk of optical fiber failure caused by moisture or contamination.
[0030] Optionally, combined Figure 3 As shown, the cover 2 also includes a drop cable holder 25, which is located between the groove of the drop cable mounting side wall 2d and the vertical connecting wall 2c.
[0031] Specifically, the drop cable holder 23 includes a pressure plate 231 and a limiting seat 232. The limiting seat 232 is provided with a U-shaped limiting hole facing upward. The pressure plate 231 covers the U-shaped limiting hole and is connected to the limiting seat 232 by screws. The pressure plate 231 prevents the optical fiber from separating from the U-shaped limiting hole, while the U-shaped limiting hole prevents the optical fiber from swinging inside the cover 2.
[0032] Thus, by positioning the drop cable holder 23 between the drop cable installation side wall 2d and the vertical connecting wall 2c, the drop cable holder 23 can ensure the stability of the optical fiber inside the box cover 2, and together with the drop cable inlet / outlet hole 22, it can ensure the stability of the optical fiber, playing a dual limiting role and preventing the drop cable from being pulled off due to external force.
[0033] Optionally, the drop cable holder 25 is provided with an identification structure, which corresponds to the drop cable inlet / outlet hole 22 and is used to correspond to the user number.
[0034] Specifically, the identification structure refers to the physical marking unit set on the drop cable holder 25, which can be engraved numbers, raised symbols, or replaceable labels, and its position corresponds spatially with the drop cable inlet / outlet hole 21. User number correspondence refers to establishing a unique mapping relationship between the identification structure and specific user information through preset coding rules, which can be achieved by sequential numbering, color differentiation, or QR code association, and its function is to establish a direct association between the physical port and user data.
[0035] A user-numbered identification structure is provided on the surface of the drop cable holder 25, with each identification structure corresponding to a specific drop cable inlet / outlet hole 21. During cable laying, operators can directly determine the user information corresponding to the current operating port by observing the identification structure, without needing to consult drawings or databases. For example, raised numbers can be simultaneously formed during the holder's injection molding process, or a numerical sequence can be laser-engraved on the metal holder surface. The correspondence between user numbers and identification structures is established through preset coding rules, such as matching the inlet / outlet hole arrangement order with the user's room number.
[0036] Thus, the identification structure set by the drop cable holder 25 corresponds to the drop cable inlet / outlet hole 22, and the identification structure is used to correspond to the user number, realizing the visual correspondence between the port position and user information, eliminating the errors that may be caused by manual comparison, thereby enabling rapid positioning and identification of the drop cable port, reducing the time spent by operators to find user information during installation or maintenance, avoiding communication failures caused by incorrect port connections, and effectively solving the problem of chaotic optical cable splicing in multi-user scenarios.
[0037] Optionally, combined Figure 3 As shown, the second cover part 2b also includes two baffles 26, which are located between the drop cable holder 25 and the vertical connecting wall 2c. The area between the two baffles 26 is used for storing the drop cable.
[0038] Specifically, the two baffles 26 are located at the left and right ends of the second cover portion 2b, respectively, and are situated between the drop cable holder 25 and the mounting opening 21. The area between the two baffles 26 is used for storing the drop cable. Thus, the area enclosed by the two baffles 26 of the second cover portion 2b, the drop cable holder 25, the vertical connecting wall 2c, and the two baffles 26 can be used for storing the drop cable, and can also prevent the stored drop cable from affecting the sliding of the sliding cover 3.
[0039] Optionally, combined Figure 3As shown, the vertical connecting wall 2c is provided with a boss 211 along its circumference, and the boss 211 is provided with a sealing strip 5 for overlapping with the sliding cover 3.
[0040] Specifically, after the sliding cover 3 completely covers the second cover 2b, the sliding cover 3 can overlap with the boss 211 on the vertical connecting wall 2c. By fixing the boss 211 with the sealing strip 5, the sealing strip 5 can abut between the sliding cover 3 and the boss 211 after the sliding cover 3 contacts the boss 211, so as to eliminate the contact gap between the sliding cover 3 and the boss 211.
[0041] Thus, by providing a boss 211 along the circumference of the vertical connecting wall 2c, and by having the sealing strip 5 provided on the boss 211 overlap with the sliding cover 3, the sealing effect between the sliding cover 3 and the boss 211 can be guaranteed. At the same time, the boss 211 can support the sliding cover 3 through the sealing strip 5 to ensure the structural stability of the sliding cover 3.
[0042] Optionally, both the drop cable inlet / outlet 22 and the ordinary cable inlet / outlet 11 are equipped with a sealing structure.
[0043] Specifically, the sealing structure employs an elastic rubber ring or a silicone sealing sleeve. When the optical cable passes through the ordinary optical cable inlet / outlet hole 11, the sealing structure undergoes elastic deformation under the pressure of the optical cable, forming a continuous sealing layer that wraps around the outer surface of the optical cable. After the optical cable is fixed, a gapless sealing interface is formed, blocking the path of external moisture and dust intrusion along the channel.
[0044] Thus, both the drop cable inlet / outlet 22 and the ordinary cable inlet / outlet 11 are equipped with sealing structures, achieving all-round sealing protection of the cable inlet / outlet, effectively preventing external moisture and dust from entering the box 1 through the channels, and reducing the risk of signal attenuation and failure of optical fibers due to contamination.
[0045] Optionally, the housing 1 is also provided with multiple wall-mounting holes.
[0046] Specifically, four wall-mounting holes are located at the bottom of the box 1, and the four wall-mounting holes are equidistantly distributed along the circumference of the box 1.
[0047] Thus, the box 1 is also provided with multiple wall-mounting holes, which facilitates the hanging and installation of the box 1, thereby improving the installation convenience of the box 1.
[0048] Optionally, the sliding cover 3 is also connected to the housing 1 via a snap-fit structure.
[0049] Specifically, the sliding cover 3 and the housing 1 are connected by a snap-fit structure to form a multi-point rigid connection. When the sliding cover 3 is closed, the snap-fit action creates a fixed constraint between the sliding cover 3 and the housing 1, which can complement the elastic seal of the first sealing flange 23 and the second sealing flange 31. When the housing 1 is subjected to vibration or external impact, the snap-fit structure disperses stress through mechanical snap-fit, preventing the sliding cover 3 from being displaced due to external force, thereby maintaining the tightness of the sealing interface.
[0050] Thus, the sliding cover 3 is also connected to the housing 1 through a snap-fit structure. The rigid connection of the snap-fit structure can maintain the ease of opening and closing of the sliding cover 3 while effectively improving the mechanical stability between the sliding cover 3 and the housing 1. This ensures that the sealing flange continuously presses against the sealing interface to improve the sealing effect.
[0051] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.
Claims
1. A fiber optic distribution box for protecting a fiber optic splitter, characterized in that, The device includes a housing (1), a cover (2), and a sliding cover (3). The housing (1) is hollow inside and has an open end with a common optical cable inlet / outlet hole (11). The cover (2) is fastened to the open end and sealed to the housing (1). The cover (2) includes a first cover part (2a) and a second cover part (2b) arranged sequentially in the horizontal direction. The top surface of the first cover part (2a) is higher than that of the second cover part (2b), and the first cover part (2a) and the second cover part (2b) are connected by a vertical connecting wall (2c). The vertical connecting wall (2c) has an installation port (21), which is used for the installation of a beam splitter (40) and communicates with the housing (1). The second cover part (2b) An upwardly extending drop cable mounting sidewall (2d) is provided at one end away from the vertical connecting wall (2c), and the drop cable mounting sidewall (2d) is provided with a drop cable inlet / outlet hole (22); the sliding cover (3) is slidably connected to the second cover part (2b), and the sliding cover (3) is used to slide toward the first cover part (2a) to abut against the vertical connecting wall (2c) to cover the second cover part (2b); the side of the second cover part (2b) that is slidably engaged with the sliding cover (3) is provided with a first sealing flange (23), and the side of the sliding cover (3) that is slidably engaged with the second cover part (2b) is provided with a second sealing flange (31), and the second sealing flange (31) and the first sealing flange (23) are slidably and sealingly connected.
2. The fiber optic distribution box for protection of a beam splitter according to claim 1, characterized in that, The sliding cover (3) includes a waterproof and breathable valve (32) and a foamed silicone rubber strip (33). The waterproof and breathable valve (32) is threaded to the top of the sliding cover (3). The foamed silicone rubber strip (33) is connected between the first sealing flange (23) and the second sealing flange (31).
3. The fiber optic distribution box for protection of a beam splitter according to claim 1, characterized in that, It also includes a pressure strip (4) and an elastic element. The box cover (2) has a groove structure (24) below the first sealing flange (23). The second sealing flange (31) is inserted between the first sealing flange (23) and the groove structure (24). The pressure strip (4) is embedded in the groove structure (24). The elastic element is connected between the pressure strip (4) and the groove structure (24). The elastic force of the elastic element is used to drive the pressure strip (4) to extend out of the groove structure (24) and abut against the second sealing flange (31).
4. The fiber optic distribution box for protection of a beam splitter according to claim 1, characterized in that, The cover (2) also includes a drop cable holder (25), which is located between the drop cable mounting side wall (2d) and the vertical connecting wall (2c).
5. The fiber optic splitter box for protection of a beam splitter according to claim 4, characterized in that, The drop cable holder (25) is provided with an identification structure, which corresponds to the drop cable inlet / outlet hole (22) and is used to correspond to the user number.
6. The fiber optic splitter box for protection of a beam splitter according to claim 4, characterized in that, The second cover (2b) also includes two baffles (26), which are located between the drop cable holder (25) and the vertical connecting wall (2c), and the two baffles (26) are used for storing the drop cable.
7. The fiber optic splitter box for protection of a beam splitter according to claim 1, characterized in that, The vertical connecting wall (2c) is provided with a boss (211) along its circumference, and the boss (211) is provided with a sealing strip (5) for overlapping with the sliding cover (3).
8. The fiber optic splitter box for protection of a beam splitter according to claim 1, characterized in that, Both the drop cable inlet / outlet (22) and the ordinary cable inlet / outlet (11) are equipped with sealing structures.
9. The fiber optic splitter box for protection of a beam splitter according to claim 1, characterized in that, The bottom of the box (1) is also provided with multiple wall-mounting holes.
10. The fiber optic distribution box for protection of a beam splitter according to claim 1, characterized in that, The sliding cover (3) is also connected to the housing (1) by a snap-fit structure.