Subdivision isolation type optical cable distribution box

Abstract

The invention relates to the technical field of communication network equipment, in particular to a subdivision isolation type optical cable distribution box, which comprises a box body, a positioning cylinder, a telescopic block, a dial wheel and a one-way assembly, and is characterized in that the box body is internally provided with a plurality of tail fibers, the positioning cylinder is vertically arranged in the box body, and the circumferential surface of the positioning cylinder is provided with an annular accommodating groove which is vertically arranged; each tail fiber is wound on the positioning cylinder and is positioned in one accommodating groove; the telescopic block is slidably arranged on the circumferential surface of the positioning cylinder along the vertical direction, the dial wheel is rotatably arranged on the telescopic block, the dial wheel is meshed with the positioning cylinder after the telescopic block is contracted, the dial wheel can rotate after the tail fiber is placed in the tooth groove, the one-way assembly is used for controlling the dial wheel to rotate in one direction, and a fit clearance exists when the dial wheel is meshed with the positioning cylinder. And the tail fiber enters the corresponding accommodating groove through the fit clearance. Tail fiber subdivision isolation storage is realized through the accommodating groove, and the circuit is clear and easy to maintain; the thumb wheel ensures that the tail fibers enter the groove in order and are uniformly spaced, local excessive bending is avoided, and the one-way assembly further improves the storage stability.

Description

Technical Field

[0001] This invention relates to the field of communication network equipment technology, and in particular to a compartment-isolated optical cable distribution box. Background Technology

[0002] Fiber optic distribution boxes are interface devices used outdoors, in corridors, or indoors to connect trunk optical cables and distribution optical cables. They are mainly used for functions such as fiber optic cable introduction, fixing and stripping protection, fiber optic splicing and protection, pigtail storage, patch cord storage and management, and fixed and cross-connection of optical fibers.

[0003] Existing fiber distribution boxes often bundle a large number of user-end pigtails together. Due to the different lengths of each pigtail and the varying positions of their connections to the splitter, improper bundling can easily cause micro-bending, macro-bending, and other deformations in the pigtails, leading to additional losses, optical signal energy leakage, and affecting transmission efficiency. At the same time, bundling means that when repairing individual user-end pigtails later, all bundled pigtails must be unbundled and separated first, and then rebundled after the repair is completed. This operation is cumbersome, and repeated bundling and unbundling can further aggravate pigtail deformation, increasing the risk of additional losses. Summary of the Invention

[0004] Therefore, it is necessary to provide a compartmentalized, isolated optical fiber distribution box to address the problem of excessive bending of localized pigtails of different lengths caused by bundling and fixing in current fiber distribution boxes.

[0005] The above objectives are achieved through the following technical solutions: A compartmentalized, isolated optical fiber distribution box includes a box body, a positioning cylinder, a guiding mechanism, and an expansion mechanism. The box body houses a fiber splitter and a fiber distributor. The fiber splitter has multiple pigtails, and the fiber distributor has multiple vertically arranged splitting holes, each for inserting one pigtail. The positioning cylinder is vertically positioned within the box body on the same side as the fiber distributor and the fiber splitter. Its circumference has multiple vertically arranged, annular receiving slots. The section of each pigtail between the fiber distributor and the fiber splitter is wound around the positioning cylinder and located in one of the receiving slots. The guiding mechanism includes a telescopic block, a dial wheel, and a one-way assembly. The telescopic block extends vertically... The directional sliding mechanism is mounted on the circumferential surface of the positioning cylinder, while the dial wheel is rotatably mounted on the telescopic block. The telescopic block has toothed grooves on its circumferential surface. After the telescopic block retracts, the dial wheel engages with the positioning cylinder through the toothed grooves and receiving slots. The telescopic block has an inlet for placing the pigtail fiber. The inlet and one of the toothed grooves coincide in the axial direction of the dial wheel. After the pigtail fiber is placed in the toothed groove, the dial wheel can rotate. A one-way component controls the unidirectional rotation of the dial wheel. When the dial wheel engages with the positioning cylinder, there is a clearance, through which the pigtail fiber enters the corresponding receiving slot. An expansion mechanism provides a pushing force away from the center of the positioning cylinder to the pigtail fiber in the receiving slot.

[0006] Preferably, the dial wheel includes a rotating column and multiple dial plates. The rotating column is unidirectionally mounted on the telescopic block around its own axis, and the axis of the rotating column is perpendicular to the axis of the positioning cylinder. The multiple dial plates are evenly arranged on the circumferential surface of the rotating column in the circumferential direction. There is a tooth groove between two adjacent dial plates. Each dial plate can be inserted into a receiving groove, and the thickness of the dial plate is less than the height of the receiving groove. The tail fiber located in the tooth groove can slide from the dial plate into the receiving groove through the guidance of the dial plate located in the receiving groove.

[0007] Preferably, the telescopic block has a channel for the pigtail to enter the receiving slot. The channel is connected to a single receiving slot and divides the telescopic block into upper and lower parts. Each part of the telescopic block includes a slider, a mounting shell, and a locking element. The slider is slidably mounted on the positioning cylinder in the vertical direction. The mounting shell is slidably mounted on the side of the slider away from the positioning cylinder in the radial direction. The rotating column is rotatably mounted on the lower mounting shell. The lever is slidably connected to the two mounting shells and can limit the relative position between the two mounting shells. The inlet is located on the side of the channel away from the positioning cylinder, and the pigtail in the channel is simultaneously located in one of the toothed slots. The locking element is used to control the distance between the mounting shell and the positioning cylinder.

[0008] Preferably, each mounting housing has a guide plate on the side away from the positioning cylinder. The two guide plates are located on both sides in the vertical direction of the inlet. The guide plates are inclined and extend in the radial direction of the positioning cylinder. The distance between the two guide plates gradually increases from the side closer to the mounting housing to the side away from the mounting housing.

[0009] Preferably, the guiding mechanism further includes two locking components, corresponding to the upper and lower parts of the telescopic block respectively. Each locking component includes a baffle, a second spring, and a magnetic post. The baffle is slidably mounted on one of the sliders in the vertical direction. The second spring is mounted on the baffle. The sliding of the baffle allows the second spring to store energy, thereby providing power for the baffle to reset. The magnetic post is mounted on the mounting shell that is slidably connected to the slider. The magnetic post is located on the side of the baffle closer to the positioning cylinder and abuts against the baffle in the sliding direction of the mounting shell. A groove is provided on the side of the baffle that contacts the magnetic post. The baffle is magnetic and attracts the magnetic post. The groove is located on the side of the magnetic post in the vertical direction. When the baffle slides to store energy in the second spring, the magnetic post can slide into the groove.

[0010] Preferably, the unidirectional assembly includes a fixed shaft, a locking block, and multiple push blocks. The fixed shaft is mounted on a mounting housing located below, and a rotating column is sleeved on and rotatably connected to the fixed shaft. The rotating column has multiple through slots extending through the rotating column in the radial direction. The through slots are located between two adjacent levers and communicate with the tooth groove. The locking block is slidably mounted on the fixed shaft in the radial direction and can be inserted into the through slot to engage with the rotating column. A first spring piece is provided between the locking block and the fixed shaft to drive the locking block closer to the rotating column. Each push block is slidably mounted in a through slot in the radial direction of the rotating column. When the locking block is inserted into the through slot, it can abut against the push block and extend the push block into the tooth groove to contact the pigtail in the tooth groove. When the pigtail slides in the channel, it can retract the push block in contact with it into the through slot and disengage the locking block and the rotating column.

[0011] Preferably, there are multiple fiber distributors arranged horizontally and located on one side of the positioning cylinder. The bottom of the housing is provided with a positioning block, and the positioning block has multiple steps arranged sequentially, with each step corresponding to a fiber distributor. The height of each step is equal to the height of the receiving groove itself plus the distance between two adjacent receiving grooves. The positioning cylinder is provided with a synchronization plate that slides vertically. The synchronization plate can contact the baffle and can contact the multiple steps on the positioning block sequentially. When a pigtail is wound around a fiber distributor, the synchronization plate contacts the corresponding step.

[0012] Preferably, there are multiple guiding mechanisms arranged around the circumferential direction of the positioning cylinder. The maximum number of fiber distributors that can be installed in the housing is n, where n≥2. Each fiber distributor has a single main hole, m branch holes, and m×n receiving slots. Each guiding mechanism has q push blocks, where q≥3, and q×n deflectors. The number of deflectors between two adjacent push blocks is consistent with the maximum number of fiber distributors.

[0013] Preferably, the expansion mechanism includes multiple expansion units, each expansion unit corresponding to a receiving groove. Each expansion unit includes multiple push rods and multiple arc plates. The multiple push rods are arranged along the circumferential direction of the positioning cylinder and located inside the pigtail. Each push rod is slidably disposed in the corresponding receiving groove along the radial direction of the positioning cylinder. The positioning cylinder has a sealed and positive pressure chamber inside. One end of each push rod is located in the chamber, and the other end is connected to an arc plate. The arc plate has an arc and its inner arc surface faces the corresponding push rod. The outer arc surface of each arc plate contacts the pigtail located in the receiving groove and applies a pushing force to the pigtail under the action of positive pressure in the chamber.

[0014] Preferably, the arc plate is elastic and can deform and bend when in contact with the tail fiber to adapt to the curvature of the tail fiber.

[0015] The beneficial effects of this invention are as follows: The vertically arranged receiving slots on the positioning cylinder allow for independent storage of each pigtail, enabling compartmentalized isolation management, clear and traceable wiring, and significantly reducing the difficulty of later maintenance. The expansion mechanism prevents large bending angles in the horizontal direction, resulting in smoother and more uniform bending, reducing optical loss and ensuring stable signal transmission. The dial wheel, in conjunction with the positioning cylinder, facilitates the smooth placement of pigtails into their corresponding slots, ensuring that adjacent pigtails do not mix in the same receiving slot, guaranteeing neat and orderly storage. The telescopic block has an inlet; after multiple pigtails are placed through the inlet, they enter their corresponding receiving slots when the dial wheel rotates at the same angle, ensuring uniform spacing between adjacent pigtails and maintaining a consistent degree of bending in the vertical direction, preventing excessive bending damage in certain areas. The unidirectional component controls the pigtails to enter the receiving slots in a single direction, preventing the dial wheel from rotating in the opposite direction and causing two pigtails to mix in the same receiving slot, further improving the stability and neatness of storage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a compartmentalized, isolated optical fiber distribution box provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the fiber storage mechanism of a compartment-isolated optical cable distribution box provided in an embodiment of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure of a fiber splitter in a compartmentalized isolated optical cable distribution box according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a guide assembly for a compartmentalized, isolated optical cable distribution box provided in an embodiment of the present invention; Figure 6 An exploded view of the guiding assembly of a compartment-isolated optical cable distribution box provided in an embodiment of the present invention; Figure 7 A top view of the fiber storage mechanism of a compartment-isolated optical cable distribution box provided in an embodiment of the present invention; Figure 8 for Figure 7 Sectional view along the BB direction; Figure 9 for Figure 8 Enlarged view of point C in the middle; Figure 10 A front view of the fiber storage mechanism of a compartment-isolated optical fiber distribution box provided in an embodiment of the present invention; Figure 11 for Figure 10 A sectional view along the DD direction.

[0017] Figure 12This is a schematic diagram of the positioning block of a compartmentalized isolated optical cable distribution box provided in an embodiment of the present invention.

[0018] in: 100. Housing; 101. Welding tray; 102. Fiber distributor; 103. Main hole; 104. Splitting hole; 105. Mounting bracket; 110. Positioning cylinder; 111. Receiving groove; 112. Chamber; 113. Arc plate; 114. Push rod; 115. One-way air inlet; 116. Guide cylinder; 117. Rotating column; 118. Paddle plate; 121. Slider; 122. Mounting shell; 123. Channel; 124. Import port; 125. Support leg; 126. Slot; 127. Guide rod; 128. Guide groove; 129. Guide plate; 130. Fixed shaft; 131. Locking block; 132. Through groove; 133. Push block; 134. First spring; 135. Baffle; 136. Second spring; 137. Magnetic column; 138. Groove; 139. Buffer groove; 140. Synchronization plate; 141. Positioning block. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0020] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They 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 the invention.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] like Figures 1 to 12 As shown, this embodiment of the invention provides a compartmentalized, isolated optical fiber distribution box, including a box body 100, a positioning cylinder 110, a guiding mechanism, and an expansion mechanism. The box body 100 contains a cable distributor and a fiber distributor 102. The cable distributor has multiple pigtails, and the fiber distributor 102 has multiple vertically arranged splitting holes 104, each hole 104 for inserting one pigtail. The positioning cylinder 110 is vertically disposed within the box body 100 and located on the same side as the fiber distributor 102 and the cable distributor. Its circumference has multiple vertically arranged, annular receiving grooves 111. Each pigtail section located between the fiber distributor 102 and the cable distributor is wound around the positioning cylinder 110 and located in one receiving groove 111. The guiding mechanism includes a telescopic block, The dial wheel and one-way assembly are arranged in a vertical direction. The telescopic block is slidably disposed on the circumferential surface of the positioning cylinder 110. The dial wheel is rotatably disposed on the telescopic block, and its circumferential surface is provided with toothed grooves. After the telescopic block is retracted, the dial wheel and the positioning cylinder 110 are engaged through the toothed grooves and the receiving groove 111. The telescopic block is provided with an inlet 124 for placing the pigtail. The inlet 124 and one of the toothed grooves coincide in the axial direction of the dial wheel. After the pigtail is placed in the toothed groove, the dial wheel can rotate. The one-way assembly is used to control the unidirectional rotation of the dial wheel. When the dial wheel is engaged with the positioning cylinder 110, there is a fitting gap. The pigtail enters the corresponding receiving groove 111 through the fitting gap. The expansion mechanism is used to provide a pushing force away from the middle of the positioning cylinder 110 to the pigtail in the receiving groove 111.

[0023] Vertically arranged receiving slots 111 are provided in the positioning cylinder 110, allowing for independent storage of each pigtail, achieving compartmentalized and isolated management, clear line traceability, and significantly reducing the difficulty of later maintenance. An expansion mechanism is provided to prevent large bending angles of the pigtails in the horizontal direction, making their bending smoother and more uniform, reducing optical loss, and ensuring stable signal transmission. A dial wheel is provided, which, in cooperation with the positioning cylinder 110, facilitates the smooth placement of pigtails into their corresponding slots, ensuring that adjacent pigtails do not mix in the same receiving slot 111, thus ensuring neat storage. An inlet 124 is provided on the telescopic block. After multiple pigtails are placed through the inlet 124, they enter the corresponding receiving slot 111 when the dial wheel rotates at the same angle, ensuring uniform spacing between adjacent pigtails, thereby ensuring that the vertical bending degree of the pigtails is basically consistent, avoiding local excessive bending damage. A unidirectional component is provided to control the pigtails to enter the receiving slot 111 in a single direction, preventing the dial wheel from rotating in the opposite direction and causing two pigtails to mix in the same receiving slot 111, further improving the stability and neatness of storage.

[0024] In this embodiment, the dial wheel includes a rotating column 117 and multiple dial plates 118. The rotating column 117 is unidirectionally mounted on the telescopic block around its own axis, and the axis of the rotating column 117 is perpendicular to the axis of the positioning cylinder 110. The multiple dial plates 118 are evenly arranged on the circumferential surface of the rotating column 117 around its circumferential direction. There is a tooth groove between two adjacent dial plates 118. Each dial plate 118 can be inserted into a receiving groove 111, and the thickness of the dial plate 118 is less than the height of the receiving groove 111. The pigtail located in the tooth groove can slide from the dial plate 118 into the receiving groove 111 through the guidance of the dial plate 118 located in the receiving groove 111.

[0025] Specifically, in the rotation direction of the rotating column 117, the lever 118 has a front side and a rear side. During the unidirectional rotation of the rotating column 117, the lever 118 can be precisely inserted into the corresponding receiving groove 111 and its front side contacts the positioning cylinder 110, so that the rotating column 117 can move stably relative to the positioning cylinder 110. At the same time, there is a gap between the rear side of the lever 118 and the positioning cylinder 110, and the tail fiber in the corresponding tooth groove on the rear side of the lever 118 can pass through the gap and enter the receiving groove 111 under the guidance of the lever 118.

[0026] The pigtail entering the channel 123 from the inlet 124 will be positioned in one of the toothed slots. Applying external force to the pigtail causes it to move closer to the positioning cylinder 110 within the channel 123. The pigtail will then contact the rear side of one of the levers 118, which in turn drives the rotating column 117 to rotate. The rotating column 117 moves upward relative to the positioning cylinder 110 until the lever 118 is inserted into the receiving groove 111 and contacts the positioning cylinder 110. At this point, the rotating column 117 will not rotate under the force from the pigtail, thus changing the direction of the force applied to the pigtail and allowing it to enter the receiving groove 111. Under the action of the one-way component, the lever will not rotate in the opposite direction under the weight of the slider 121 and will not slide relative to the positioning cylinder 110. This allows the next pigtail to rotate based on its position, causing the rotating column 117 to rotate.

[0027] During the process of multiple pigtails moving from the inlet 124 to the receiving tank 111, the rotating column 117 rotates at the same angle each time, and the pigtails that enter the receiving tank 111 in sequence are at the same distance, thus achieving separate management of the pigtails.

[0028] In this embodiment, the telescopic block has a channel 123 for the pigtail to enter the receiving groove 111. The channel 123 is connected to a single receiving groove 111 and its height is less than or equal to the height of the receiving groove 111. The channel 123 divides the telescopic block into upper and lower parts. Each part of the telescopic block includes a slider 121, a mounting shell 122 and a locking member. The slider 121 is slidably disposed on the positioning cylinder 110 in the vertical direction. The mounting shell 122 is slidably disposed on the side of the slider 121 away from the positioning cylinder 110 in the radial direction of the positioning cylinder 110. The rotating column 117 is rotatably disposed on the mounting shell 122 located below. The lever 118 is slidably connected to the two mounting shells 122 and can limit the relative position between the two mounting shells 122. The inlet 124 is located on the side of the channel 123 away from the positioning cylinder 110 and above the rotation axis of the rotating column 117. The pigtail located in the channel 123 is simultaneously located in one of the toothed grooves. The locking member is used to control the distance between the mounting shell 122 and the positioning cylinder 110.

[0029] Specifically, each slider 121 has two feet 125 arranged along the axial direction of the rotating column 117 on the side near the positioning cylinder 110. The circumferential surface of the positioning cylinder 110 is provided with a slot 126 that matches the feet 125. Each foot 125 is slidably disposed in the corresponding slot 126 in the vertical direction. The lever 118 is located between the two feet 125 on the slider 121 in the axial direction of the rotating shaft.

[0030] The lever 118 has guide rods 127 on both sides of the rotating column 117 in the axial direction. Each mounting shell 122 has a guide groove 128, which is an arc-shaped groove with the same curvature as the path of rotation of the guide rod 127. The guide rods 127 are slidably disposed in the guide grooves 128, and at least two guide rods 127 on the lever 118 exist simultaneously in the guide grooves 128 on each mounting shell 122. The rotating column 117 restricts the relative position of the two mounting shells 122 through the cooperation of the guide rods 127 on the lever 118 and the guide grooves 128, so that the two mounting shells 122 and the slider 121 slide synchronously in the vertical direction, which also ensures the stability of the channel 123.

[0031] In this embodiment, each mounting shell 122 is provided with a guide plate 129 on the side away from the positioning cylinder 110. The two guide plates 129 are located on both sides of the inlet 124 in the vertical direction. The guide plates 129 are inclined and extend in the radial direction along the positioning cylinder 110. The distance between the two guide plates 129 gradually increases from the side closer to the mounting shell 122 to the side away from the mounting shell 122.

[0032] Specifically, the two guide plates 129 are trumpet-shaped. The cooperation of the two guide plates 129 makes it easier for the pigtail to enter the channel 123 from the inlet 124.

[0033] In this embodiment, the guiding mechanism further includes two locking members, corresponding to the upper and lower parts of the telescopic block respectively. Each locking member includes a baffle 135, a second spring 136, and a magnetic post 137. The baffle 135 is slidably disposed on one of the sliders 121 in the vertical direction. The second spring 136 is disposed on the baffle 135. The sliding of the baffle 135 allows the second spring 136 to store energy, thereby providing power for the resetting of the baffle 135. The magnetic post 137 is disposed on the slider 121. The magnetic post 137 is located on the side of the baffle 135 near the positioning cylinder 110 and abuts against the baffle 135 in the sliding direction of the mounting housing 122. The side of the baffle 135 that contacts the magnetic post 137 has a groove 138. The baffle 135 is magnetic and attracts the magnetic post 137. The groove 138 is located on one side of the magnetic post 137 in the vertical direction. When the baffle 135 slides, the magnetic post 137 can slide into the groove 138 when the second spring 136 stores energy.

[0034] Under normal conditions, the magnetic post 137 is located outside the groove 138 and the rotating post 117 is engaged with the positioning cylinder 110. When the baffle 135 slides to allow the second spring 136 to store energy, the groove 138 moves closer to the magnetic post 137 until it is aligned with the magnetic post 137 along the radial direction of the positioning cylinder 110. The magnetic post 137 will then slide into the groove 138 under the action of magnetic force, causing the rotating post 117 to move away from the positioning cylinder 110 and disengage from the positioning cylinder 110.

[0035] Specifically, the second spring 136 in each locking element is connected to the baffle 135 and the mounting shell 122 respectively. The second spring 136 causes the baffle 135 to be away from the channel 123 in normal condition. The baffle 135 on the upper part of the slider 121 is higher than the slider 121, and the baffle 135 on the lower part of the slider 121 is lower than the slider 121, so that the two baffles 135 can be brought closer to each other by pressing them in the opposite direction by hand. Under normal conditions, the telescopic block is at its shortest length under the action of the magnetic post 137 and the baffle 135. After pressing the baffle 135, the baffle 135 slides and its groove 138 moves closer to the magnetic post 137 until the magnetic post 137 slides into the groove 138. The magnetic post 137 and the baffle 135 are always in contact with each other under the action of magnetic force. At this time, the mounting shell 122 will move away from the positioning cylinder 110 relative to the slider 121, so that the lever 118 is separated from the positioning cylinder 110, and the slider 121 can slide in the opposite direction, so that the slider 121 can slide downward relative to the positioning cylinder 110, thereby adjusting the position of the guide mechanism.

[0036] In this embodiment, the one-way component includes a fixed shaft 130, a locking block 131, and multiple push blocks 133. The fixed shaft 130 is disposed on the mounting shell 122 located below. The rotating column 117 is sleeved on the fixed shaft 130 and rotatably connected to the fixed shaft 130. The rotating column 117 is provided with multiple through slots 132 extending through the rotating column 117 in the radial direction. The through slots 132 are located between two adjacent levers 118 and communicate with the tooth groove. The locking block 131 is slidably disposed on the fixed shaft 130 in the radial direction and can be inserted into the through slot. The locking block 131 engages with the rotating column 117. A first spring piece 134 is provided between the locking block 131 and the fixed shaft 130 to drive the locking block 131 closer to the rotating column 117. Each push block 133 is slidably disposed in a through groove 132 along the radial direction of the rotating column 117. The locking block 131 can abut against the push block 133 when inserted into the through groove 132, and the push block 133 can extend into the tooth groove and contact the tail fiber in the tooth groove. When the tail fiber slides in the channel 123, it can cause the push block 133 in contact with it to retract into the through groove 132 and disengage the locking block 131 and the rotating column 117.

[0037] Specifically, the fixed shaft 130 is provided with a sliding groove, and the locking block 131 is slidably disposed in the sliding groove and can be completely accommodated in the sliding groove. The through groove 132 is close to the rear side of one of the adjacent dial plates 118, and the push block 133 extending into the tooth groove is located between the pigtail and the dial plate 118. The side of the push block 133 near the pigtail is an inclined surface, and the inclined surface gradually moves away from the pigtail from the side near the rotating column 117 to the side away from the rotating column 117. The pigtail passes through the inclined surface, making it easier for the push block 133 to slide into the rotating column 117.

[0038] During the rotation of the rotating column 117 driven by the pigtail, one of the dial plates 118 is inserted into the receiving groove 111 and comes into contact with the positioning cylinder 110. Then, a toothed groove faces the inlet 124, and there is a through groove 132 communicating with it. At the same time, the locking block 131 is inserted into the through groove 132 and pushes the push block 133 in the through groove 132 into the toothed groove. The pigtail entering the toothed groove from the inlet 124 can contact the inclined surface on the push block 133. At this time, an external force is applied to the pigtail to make it move closer to the positioning cylinder 110. The pigtail will push the push block 133, which is in contact with it, back into the rotating column 117 through the inclined surface. The push block 133 will then push the locking block 131 away from the rotating column 117 until the locking block 131 slides out of the through slot 132. At this time, the rotating column 117 is no longer restricted and rotates under the action of the pigtail. The locking block 131 slides into contact with the rotating column 117 under the action of the first spring piece 134 until it is inserted into the next through slot 132.

[0039] In this embodiment, multiple fiber splitters 102 are provided, arranged horizontally and located on one side of the positioning cylinder 110. The bottom of the housing 100 is provided with a positioning block 141, which has multiple steps. The multiple steps are arranged sequentially, and each step corresponds to a fiber splitter 102. The height of each step is equal to the height of the receiving groove 111 itself plus the distance between two adjacent receiving grooves 111. The positioning cylinder 110 is provided with a synchronization plate 140 that slides vertically. The synchronization plate 140 can contact the baffle 135 and can contact the multiple steps on the positioning block 141 sequentially. When a pigtail is wound around a fiber splitter 102, the synchronization plate 140 contacts the corresponding step.

[0040] Specifically, for ease of use, two synchronization plates 140 are provided. The two synchronization plates 140 are located on both sides of the two baffles 135 in the vertical direction, and there is a certain friction between the two synchronization plates 140 and the positioning cylinder 110. The synchronization plates 140 will not slide on the positioning cylinder 110 due to their own weight. The two ends of the pigtail wound on the positioning cylinder 110 have an included angle. The synchronization plate 140 is an arc plate, and its curvature is a major arc. The notch of the synchronization plate 140 corresponds to a minor arc, and the curvature of the minor arc is greater than the included angle between the two ends of the pigtail wound on the positioning cylinder 110. The housing 100 is provided with a mounting frame 105, which is located in the minor arc section. Multiple fiber splitters 102 are sequentially arranged on the mounting frame 105.

[0041] When the pigtail is wound on the positioning cylinder 110, the end away from the splitter is inserted into the splitting hole 104 on a splitter 102 until it is full, and then another splitter 102 is inserted. This method can save the number of splitters 102, and at the same time, it can make the spacing between two adjacent pigtails on each splitter 102 consistent and reduce the bending rate of each pigtail in the vertical direction.

[0042] Before installing the first pigtail, the guide mechanism needs to be returned to its initial position. At this time, the mounting shell 122 can be driven by the synchronous plate 140 to disengage the rotating column 117 from the positioning cylinder 110, so that the slider 121 can slide downward in the vertical direction and the synchronous plate 140 located below can contact the lowest step on the positioning block 141 to determine the initial position of the slider 121.

[0043] When the fiber splitter 102 is full of pigtails, the slider 121 is located near the top of the positioning cylinder 110. At this time, the guide mechanism is moved down again and contacts the step one level higher than the positioning block 141, so that the pigtails on the next fiber splitter 102 will not be in the same receiving groove 111 as the pigtails of the previous fiber splitter 102.

[0044] The friction between slider 121 and positioning cylinder 110 is small, and the rotation of rotating column 117 can drive slider 121 to slide relatively easily without damaging the pigtail.

[0045] The enclosure 100 also includes a splice tray 101, a main cable, and a fixing frame. The splice tray 101 is mounted on the positioning cylinder 110. Multiple pigtails are connected to the main cable, and each pigtail is inserted into a main hole 103 on a fiber splitter 102. The main cable and its spliced ​​portion are located in the splice tray 101. The fixing frame is used to secure the main cable and branch cables that enter the enclosure 100.

[0046] In this embodiment, multiple guiding mechanisms are provided, arranged around the circumferential direction of the positioning cylinder 110. These multiple guiding mechanisms can better guide the fiber optic cable into the corresponding receiving slot 111. The baffle 135 in each guiding mechanism can contact the corresponding synchronization plate 140. Let n be the maximum number of fiber splitters 102 that can be installed in the housing 100, where n≥2. In each fiber splitter 102, there is one main hole 103, m splitting holes 104, and m×n receiving slots. In each guiding mechanism, there is q push blocks 133, where q≥3, and q×n levers 118. The number of levers 118 between two adjacent push blocks 133 is consistent with the maximum number of fiber splitters 102.

[0047] Specifically, let n=4 and q=3 (e.g.) Figure 4 and Figure 9 As shown), when one of the through slots 132 is located at the inlet 124, the locking block 131 engages with the rotating column 117 through the through slot 132. A lever 118 is in a horizontal state and inserted into a receiving groove 111, contacting the positioning cylinder 110. The receiving groove 111 with the lever 118 inserted corresponds to one of the through slots 132. The pigtail in the through slot 132 can slide into the receiving groove 111. When the subsequent pigtail enters the corresponding toothed groove from the inlet 124, the pigtail will cause the push block 1 to contact it. 33. Push the locking block 131 to slide until the rotating column 117 can rotate. At this time, the pigtail will drive the rotating column 117 to rotate. The rotation of the rotating column 117 will cause each dial 118 to be inserted into the corresponding receiving slot 111 and drive the slider 121 and the mounting shell 122 to slide upward until the locking block 131 is inserted into the next through slot 132 and the rotating column 117 stops rotating. At this time, the pigtail can slide into the corresponding receiving slot 111. At this time, the number of receiving slots 111 between two adjacent pigtails is n-1.

[0048] The positioning cylinder 110 has multiple buffer grooves 139 arranged vertically on its circumferential surface. The number of buffer grooves 139 is the same as the maximum number of fiber splitters 102. The buffer grooves 139 are located below the receiving groove 111 and are used to receive the levers 118 located below the receiving groove 111 and in contact with the positioning cylinder 110. When the guide mechanism is in its initial position, the levers 118 in contact with the positioning cylinder 110 are located in one of the buffer grooves 139, and the number of buffer grooves 139 between this buffer groove 139 and the lowest receiving groove 111 is n-1. When the rotating column 117 rotates, the levers 118 on it will be inserted into the corresponding buffer grooves 139 in sequence. When the first pigtail is placed at the inlet 124 and the rotating column 117 is rotated, the pigtail can slide into the lowest receiving groove 111 so that all the pigtails can be accommodated even when the fiber splitter 102 is fully loaded.

[0049] In this embodiment, the expansion mechanism includes multiple expansion units, each expansion unit corresponding to a receiving groove 111. Each expansion unit includes multiple push rods 114 and multiple arc plates 113. The multiple push rods 114 are arranged along the circumferential direction of the positioning cylinder 110 and located inside the pigtail. Each push rod 114 is slidably disposed in the corresponding receiving groove 111 along the radial direction of the positioning cylinder 110. The positioning cylinder 110 is provided with a sealed and positive pressure chamber 112. One end of each push rod 114 is located in the chamber 112, and the other end is connected to the middle of an arc plate 113. The arc plate 113 has an arc and its inner arc surface faces the corresponding push rod 114. The outer arc surface of each arc plate 113 contacts the pigtail located in the receiving groove 111 and applies a pushing force to the pigtail under the action of positive pressure in the chamber 112.

[0050] Specifically, the positioning cylinder 110 is provided with a one-way air inlet 115, through which high-pressure gas is injected into the chamber 112, creating a positive pressure environment within the chamber 112. A guide cylinder 116 is provided inside the chamber 112. Each push rod 114 has one end in the chamber 112 that passes through and is slidably connected to the guide cylinder 116. The guide cylinder 116 can limit and guide the sliding of the push rod 114, making its sliding smoother. A boss is provided at the end of the push rod 114 inside the chamber 112. When the arc plate 113 is not subjected to external force, the positive pressure inside the chamber 112 allows the boss to abut against the guide cylinder 116. The arc plate 113 is located closest to the circumference of the positioning cylinder 110. When a pigtail is wound around the positioning cylinder 110 and placed in the receiving groove 111, the pigtail will contact the outer arc surface of the corresponding arc plate 113, thereby pushing the push rod 114 to slide into the chamber 112 through the arc plate 113. At the same time, the pigtail will also be tensioned by the reaction force of the arc plate 113 and the push rod 114 to prevent excessive bending. The arcs formed by pigtails of different lengths in their respective receiving grooves 111 are not the same, and the squeezing forces on the arc plate 113 and the push rod 114 are not the same. The arc plate 113 and the push rod 114 slide to the corresponding positions in the corresponding receiving grooves 111 according to the squeezing forces they receive, and support the pigtails, so that the arcs of the pigtails at each position are more consistent, thus making them smoother.

[0051] In this embodiment, the arc plate 113 is elastic and can deform and bend when in contact with the pigtail to adapt to the curvature of the pigtail.

[0052] Specifically, after the pigtail on the split cable is wound around the positioning cylinder 110 and enters the corresponding receiving groove 111, it will contact the arc plate 113 in the receiving groove 111 and wrap the arc plate 113. When the arc plate 113 is subjected to external force, it will deform and bend, thereby adapting to the curvature of the pigtail and reducing the damage of the arc plate 113 to the pigtail.

[0053] The working principle of the compartment-isolated optical cable distribution box provided in the above embodiment is as follows: First, open the box 100, connect the main cable and branch cable to the pigtails and insert them into the box 100 and fix them with the fixing bracket. Then, insert the pigtails on the main cable into the main hole 103 on the fiber splitter 102, place the spliced ​​part of the main cable and pigtails into the splice tray 101, and install the fiber splitter 102 into the box 100.

[0054] Next, determine the position of slider 121, slide all sliders 121 to the top, then use two synchronous plates 140 to clamp the two baffles 135 in each guide mechanism, so that the lever 118 on the rotating column 117 is separated from the positioning cylinder 110 in the radial direction of the positioning cylinder 110. Then slide the synchronous plate 140 to contact the lowest step on the positioning block 141, then remove the positioning block 141 and release the synchronous plate 140, so that the guide mechanism is located at the bottom of the positioning cylinder 110.

[0055] Then, pull out one of the pigtails from the branch cable, hold the pigtail with both hands, and let the pigtail between your hands slide to the inlet 124 of the channel 123 under the guidance of the guide plate 129. Then, place it in the corresponding tooth groove and make it contact the push block 133. Next, apply a force to the pigtail in the tangential direction of the rotating column 117 and move it toward the positioning cylinder 110. The pigtail applies a component force in the radial direction of the rotating column 117 to the push block 133 through the inclined surface on the push block 133. The push block 133 slides in the through groove 132 and moves toward the fixed shaft 130. The push block 133 pushes the locking block 131 to slide. After the locking block 131 slides, it compresses the first spring 134, and the first spring 134 stores energy.

[0056] When the locking block 131 slides out of the through slot 132, the rotating column 117 rotates under the action of the pigtail. At the same time, the pigtail slides in the channel 123 and moves closer to the positioning cylinder 110. When the rotating column 117 rotates, it moves upward relative to the positioning cylinder 110 through the cooperation of the dial plate 118 and the buffer groove 139. The rotating column 117 drives the mounting shell 122 and the slider 121 to move synchronously. The slider 121 slides upward on the positioning cylinder 110. At the same time as the rotating column 117 rotates, each dial plate 118 moves closer to the positioning cylinder 110. After the positioning cylinder 110 is inserted into a buffer groove 139, the dial 118 that contacts the pigtail is inserted into the lowest receiving groove 111. At this time, the pigtail continues to slide in the channel 123 until the dial 118 that contacts the pigtail and the positioning cylinder 110 come into contact. At the same time, the locking block 131 will be inserted into the next through groove 132 and locked with the rotating post 117 under the action of the first spring piece 134. The rotating post 117 can no longer rotate. At this time, the pigtail is pushed into the corresponding receiving groove 111.

[0057] Similarly, the pigtail passes through the channels 123 of several subsequent guide mechanisms and is then positioned in the corresponding receiving slot 111 (the pigtail can also be inserted into the channels 123 of multiple guide mechanisms simultaneously around the positioning cylinder 110, which can improve placement efficiency). The end of the pigtail furthest from the splitter is inserted into the corresponding splitting hole 104 of the splitter 102. At this point, the multiple guide mechanisms are at the same height. Then, another pigtail is pulled out and placed into the corresponding receiving slot 111 in the same manner.

[0058] After the splitting holes 104 on the first fiber splitter 102 are filled, the slider 121 slides above the positioning cylinder 110. Then, the two synchronization plates 140 slide to contact the two baffles 135 on the slider 121. Then, the positioning block 141 slides so that it is higher than the previous step and located directly below the synchronization plate 140. Force is applied to the two synchronization plates 140 so that the synchronization plates 140 push the baffles 135 to slide and compress the second spring 136. The second spring 136 stores energy. After the baffles 135 slides, the grooves 138 on them will approach the magnetic pillars 137 until the magnetic pillars 137 slide into the grooves 138 under the attraction of the magnetic force. At this time, the magnetic pillars 137 will drive the mounting shell 122 away from the positioning cylinder 110 relative to the slider 121. The dial plate 118 separates from the positioning cylinder 110, and the rotating column 117 and the positioning cylinder 110 are no longer in a meshing state. Then, maintaining the distance between the two synchronization plates 140, slide the synchronization plates 140 downwards to make them contact the positioning block 141. Then, remove the positioning block 141 and release the two synchronization plates 140. The second spring 136 releases energy and pushes the baffle 135 to reset. The baffle 135 slides to make the magnetic column 137 slide out of the groove 138 and push the magnetic column 137 closer to the positioning cylinder 110. The magnetic column 137 drives the mounting shell 122 closer to the positioning cylinder 110 and makes a lever 118 on the rotating column 117 insert into the corresponding buffer groove 139 (as the number of fiber splitters 102 increases, when the pigtail is inserted into the subsequent fiber splitter 102, the lever 118 may be inserted into the receiving groove 111 after the slider 121 is reset). Then, move the synchronization plate 140 away from the slider 121 to avoid the synchronization plate 140 affecting the sliding of the slider 121.

[0059] Then place all the pigtails following the steps described above.

[0060] When the pigtail is wound around the positioning cylinder 110 and inserted into the corresponding dividing hole 104, the pigtail applies different forces to the arc plate 113 and push rod 114 in the corresponding receiving groove 111 according to its own length. The arc plate 113 bends after being subjected to external force to adapt to the shape of the pigtail. The push rod 114 moves closer to the middle of the positioning cylinder 110 after being subjected to external force and applies a reverse force to the pigtail, so that the pigtail is in a tensioned state.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A compartmentalized, isolated optical fiber distribution box, characterized in that, include: The enclosure comprises a housing, a positioning cylinder, a guiding mechanism, and an expansion mechanism. The housing contains a cable distributor and a fiber distributor. The cable distributor has multiple pigtails, and the fiber distributor has multiple vertically arranged splitting holes, each for inserting one pigtail. The positioning cylinder is vertically positioned within the housing on the same side as the fiber distributor and the cable distributor. Its circumference has multiple vertically arranged, annular receiving slots. Each pigtail section between the fiber distributor and the cable distributor is wound around the positioning cylinder and located in one of the receiving slots. The guiding mechanism includes a telescopic block, a dial wheel, and a one-way assembly. The telescopic block slides vertically within the housing. On the circumference of the positioning cylinder, a dial wheel is rotatably mounted on a telescopic block. The telescopic block has toothed grooves on its circumference. After the telescopic block retracts, the dial wheel and the positioning cylinder mesh through the toothed grooves and receiving slots. The telescopic block has an inlet for placing the pigtail fiber. The inlet and one of the toothed grooves coincide in the axial direction of the dial wheel. After the pigtail fiber is placed in the toothed groove, the dial wheel can rotate. A one-way component controls the unidirectional rotation of the dial wheel. When the dial wheel meshes with the positioning cylinder, there is a clearance, through which the pigtail fiber enters the corresponding receiving slot. An expansion mechanism provides a pushing force away from the center of the positioning cylinder to the pigtail fiber in the receiving slot.

2. The compartmentalized isolated optical cable distribution box according to claim 1, characterized in that, The dial wheel includes a rotating column and multiple dial plates. The rotating column is unidirectionally mounted on the telescopic block and rotates around its own axis. The axis of the rotating column is perpendicular to the axis of the positioning cylinder. The multiple dial plates are evenly arranged on the circumferential surface of the rotating column in the circumferential direction. There is a tooth groove between two adjacent dial plates. Each dial plate can be inserted into a receiving groove, and the thickness of the dial plate is less than the height of the receiving groove. The tail fiber located in the tooth groove can slide from the dial plate into the receiving groove through the guidance of the dial plate located in the receiving groove.

3. The compartmentalized isolated optical cable distribution box according to claim 2, characterized in that, The telescopic block has a channel for the pigtail to enter the receiving slot. The channel is connected to a single receiving slot and divides the telescopic block into upper and lower parts. Each part of the telescopic block includes a slider, a mounting shell, and a locking element. The slider is slidably mounted on the positioning cylinder in the vertical direction. The mounting shell is slidably mounted on the side of the slider away from the positioning cylinder in the radial direction. The rotating column is rotatably mounted on the lower mounting shell. The lever is slidably connected to the two mounting shells and can limit the relative position between the two mounting shells. The inlet is located on the side of the channel away from the positioning cylinder. The pigtail in the channel is simultaneously located in one of the toothed slots. The locking element is used to control the distance between the mounting shell and the positioning cylinder.

4. The compartmentalized isolated optical cable distribution box according to claim 3, characterized in that, Each mounting housing has a guide plate on the side away from the positioning cylinder. The two guide plates are located on both sides in the vertical direction of the inlet. The guide plates are inclined and extend in the radial direction of the positioning cylinder. The distance between the two guide plates gradually increases from the side closer to the mounting housing to the side away from the mounting housing.

5. A compartmentalized, isolated optical fiber distribution box according to claim 3, characterized in that, The guiding mechanism also includes two locking components, corresponding to the upper and lower parts of the telescopic block respectively. Each locking component includes a baffle, a second spring, and a magnetic post. The baffle is slidably mounted on one of the sliders in the vertical direction. The second spring is mounted on the baffle. The sliding of the baffle allows the second spring to store energy, thereby providing power for the baffle to reset. The magnetic post is mounted on the mounting shell that is slidably connected to the slider. The magnetic post is located on the side of the baffle closer to the positioning cylinder and abuts against the baffle in the sliding direction of the mounting shell. A groove is formed on the side of the baffle that contacts the magnetic post. The baffle is magnetic and attracts the magnetic post. The groove is located on the vertical side of the magnetic post. When the baffle slides to store energy in the second spring, the magnetic post can slide into the groove.

6. A compartmentalized, isolated optical fiber distribution box according to claim 3, characterized in that, The unidirectional assembly includes a fixed shaft, a locking block, and multiple push blocks. The fixed shaft is mounted on a mounting housing located below, and a rotating column is sleeved on and rotatably connected to the fixed shaft. The rotating column has multiple through slots that extend through the rotating column in the radial direction. The through slots are located between two adjacent levers and communicate with the tooth groove. The locking block is slidably mounted on the fixed shaft in the radial direction and can be inserted into the through slot to engage with the rotating column. A first spring piece is provided between the locking block and the fixed shaft to drive the locking block closer to the rotating column. Each push block is slidably mounted in a through slot in the radial direction of the rotating column. When the locking block is inserted into the through slot, it can abut against the push block and extend the push block into the tooth groove to contact the pigtail in the tooth groove. When the pigtail slides in the channel, it can retract the push block in contact with it into the through slot and disengage the locking block and the rotating column.

7. A compartmentalized, isolated optical fiber distribution box according to claim 6, characterized in that, Multiple fiber splitters are provided, arranged horizontally and located on one side of the positioning cylinder. A positioning block is provided at the bottom of the housing, and multiple steps are provided on the positioning block. The multiple steps are arranged sequentially, and each step corresponds to a fiber splitter. The height of each step is equal to the height of the receiving groove itself plus the distance between two adjacent receiving grooves. A synchronization plate is provided on the positioning cylinder, which is slidably arranged in the vertical direction. The synchronization plate can contact the baffle and can contact the multiple steps on the positioning block sequentially. When the pigtail of a fiber splitter is wound, the synchronization plate contacts the corresponding step.

8. A compartmentalized, isolated optical fiber distribution box according to claim 7, characterized in that, There are multiple guiding mechanisms arranged around the circumferential direction of the positioning cylinder. The maximum number of fiber distributors that can be installed in the box is n, n≥2; the number of main holes in each fiber distributor is one, the number of branch holes is m, and the number of receiving slots is m×n; the number of push blocks in each guiding mechanism is q, q≥3, and the number of levers is q×n. The number of levers between two adjacent push blocks is consistent with the maximum number of fiber distributors.

9. A compartmentalized, isolated optical cable distribution box according to claim 1, characterized in that, The expansion mechanism includes multiple expansion units, each corresponding to a receiving groove. Each expansion unit includes multiple push rods and multiple arc plates. The multiple push rods are arranged along the circumferential direction of the positioning cylinder and located inside the pigtail. Each push rod is slidably disposed in the corresponding receiving groove along the radial direction of the positioning cylinder. The positioning cylinder has a sealed and positive pressure chamber inside. One end of each push rod is located in the chamber, and the other end is connected to an arc plate. The arc plate has an arc shape, and its inner arc surface faces the corresponding push rod. The outer arc surface of each arc plate contacts the pigtail located in the receiving groove and applies a pushing force to the pigtail under the action of positive pressure in the chamber.

10. A compartmentalized, isolated optical cable distribution box according to claim 9, characterized in that, The arc plate is elastic and can deform and bend when in contact with the pigtail to adapt to the curvature of the pigtail.

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