A large-capacity optical cable cross-connect box facilitating installation of adapters

Abstract

A large-capacity optical cable junction box with an adapter for easy installation, comprising a box body; a wire device comprising a wire pile mounting frame fixedly mounted in the box body, a wire pile slidingly and elastically mounted on the wire pile mounting frame, and a single poking plate for poking the wire pile; a support frame fixedly mounted in the box body, on which an optical cable reel is slidingly mounted; the front half of the optical cable reel is provided with a front mounting frame fixedly mounted on the optical cable reel and a rear mounting frame slidingly and elastically mounted on the optical cable reel; the front mounting frame and the rear mounting frame are both provided with a mounting module; the rear half of the optical cable reel is fixedly provided with a lower layer of wire reels and an upper layer of wire reels; the mounting module comprises a fixedly mounted connector mounting plate, a slidingly mounted adapter mounting frame, and a pair of sliding blocks slidingly and elastically mounted on the adapter mounting frame; the adapter mounting frame is provided with an adapter mounting groove, and the pair of sliding blocks are arranged correspondingly to the adapter mounting groove; the present application has the advantages of large capacity, easy adapter installation, and clear wiring and tidying.

Description

Technical Field

[0001] The present invention relates to the technical field of optical cable junction boxes, in particular to a large-capacity optical cable junction box which is convenient for installing adapters. Background Art

[0002] In the modern information society, communication networks serve as the core infrastructure for information transmission, and their stability and efficiency are directly impacting every aspect of social production and life. As a key node in optical fiber communication networks, optical cable junction boxes (CJBs) perform important functions such as connecting, distributing, and scheduling optical cable lines. They enable the termination, patching, and storage of optical cables, providing reliable physical connections and protection for the stable transmission of optical signals. They are core components that ensure the normal operation and flexible expansion of optical communication networks.

[0003] With the rapid development of fiber-optic communication technology and the dramatic increase in the number of fiber-optic access users, communication networks are placing higher demands on the performance of optical cable junction boxes. However, traditional optical cable junction boxes, limited by the scale of communication needs and the technological level during their development, are no longer suitable for current application scenarios. In practice, the number of optical cables requiring access has increased significantly, and the capacity bottleneck of traditional optical cable junction boxes has become increasingly prominent. This has led to the frequent replacement of junction boxes with larger capacities during optical cable line expansion, significantly increasing network construction costs.

[0004] Furthermore, within the optical fiber splice box, the fiber tray is a crucial component for storing and organizing optical fibers. Its space utilization directly impacts the box's capacity utilization. Existing fiber trays, due to their fixed connector size, cannot be compressed. This leaves a significant amount of space behind the tray after storing the fibers. This inefficient use of space further exacerbates the capacity issues of traditional optical fiber splice boxes, resulting in significant waste of space and hindering the proper layout and efficient management of optical cables.

[0005] Adapters are key components for achieving optical cable connections in optical cable junction boxes. However, traditional optical cable junction boxes have obvious defects in the adapter installation design: the installation space for the adapters is narrow, and operators need to spend time and energy to accurately align and fix them during the installation process, which seriously restricts installation efficiency and increases the risk of connection failures due to improper installation operations.

[0006] Furthermore, the internal layout and structural design of traditional optical cable junction boxes lack systematic consideration, resulting in chaotic routing of cables within the box and greatly complicating subsequent maintenance and management. When a network failure occurs, maintenance personnel must spend a significant amount of time troubleshooting the cables and locating the fault point, increasing maintenance costs and extending repair time, negatively impacting the continuous and stable operation of the communications network.

[0007] In summary, it is necessary to develop an optical cable junction box with large capacity, easy adapter installation and clear wiring to solve the above problems. Summary of the Invention

[0008] In view of the above problems, the present invention proposes a large-capacity optical cable junction box that is easy to install adapters. The technical solution used is:

[0009] A large-capacity optical cable junction box that is convenient for installing adapters, comprising a box body, a conductor device and a support frame installed in the box body;

[0010] The conductor device includes a conductor pile mounting frame fixedly mounted in the box, a conductor pile slidably and elastically mounted on the conductor pile mounting frame, and a single toggle plate slidably mounted on the conductor pile mounting frame for pushing the conductor pile to move;

[0011] The support frame is fixedly installed in the box, and a plurality of optical cable drums are slidably installed on the support frame; the front half of the optical cable drum is provided with a front mounting frame fixedly installed on the optical cable drum, and a rear mounting frame slidably and elastically installed on the optical cable drum; the front mounting frame and the rear mounting frame are both provided with mounting modules; the rear half of the optical cable drum is fixedly provided with a lower winding drum corresponding to the mounting module on the front mounting frame, and an upper winding drum corresponding to the mounting module on the rear mounting frame;

[0012] The mounting module includes a connector mounting plate fixedly mounted on the front mounting frame or the rear mounting frame, an adapter mounting frame slidably mounted on the front mounting frame or the rear mounting frame, and sliding blocks arranged in pairs, slidingly and elastically mounted on the adapter mounting frame; the adapter mounting frame is provided with an adapter mounting slot, and the paired sliding blocks are arranged corresponding to the adapter mounting slot.

[0013] Furthermore, the installation module also includes a push plate slidably installed on the adapter mounting frame, and the push plate is provided with a push inclined surface corresponding to each sliding block; when the push plate moves, the push inclined surface drives the sliding block to move, and the sliding blocks in the same pair approach each other.

[0014] Furthermore, two upper and lower leaf springs 2 are fixedly mounted on each of the sliding blocks, and the four leaf springs 2 on the same pair of sliding blocks correspond to the four corners of the adapter respectively.

[0015] Furthermore, a clamping block is slidably and elastically mounted on each of the sliding blocks.

[0016] Furthermore, a rear cover plate located above the upper winding drum and the lower winding drum is fixedly installed on the rear half of the optical cable drum.

[0017] Furthermore, a front cover plate capable of intermittently covering the front mounting frame and the rear mounting frame and the modules mounted thereon is slidably mounted on the optical cable drum.

[0018] Furthermore, a card slot is provided on the front cover plate, and a card rod that intermittently enters the card slot is slidably mounted on the support frame.

[0019] Furthermore, a limiting groove 1 is provided on the conductor pile mounting frame corresponding to the single toggle plate; the limiting groove 1 includes a horizontal groove 1 and a vertical groove 1 that are interconnected. After the single toggle plate enters the vertical groove 1, the positions of the single toggle plate and the conductor pile are fixed.

[0020] Furthermore, the wire device also includes a main toggle plate slidably mounted on the wire pile mounting frame; the main toggle plate is fixed with a sub-toggle plate corresponding to each single toggle plate; the sub-toggle plate is located behind the corresponding single toggle plate and can push the corresponding single toggle plate to move.

[0021] Furthermore, a pin is installed on the side of the rear mounting frame, and a limiting groove 2 is provided on the inner side of the optical cable drum, and the limiting groove 2 includes a vertical groove 2 and a horizontal groove 2 that are connected to each other. The pin is slidably installed in the limiting groove 2 on the same side; a leaf spring 1 arranged below the rear mounting frame is fixedly installed on the optical cable drum; when the pin slides to the horizontal groove 2, the position of the rear mounting frame is fixed and the leaf spring 1 is pressed downward.

[0022] Since the present invention adopts the above technical solution, compared with the prior art, the present invention has the following advantages:

[0023] 1. This invention breaks through the capacity limitation of traditional optical cable junction boxes. In order to solve the problem that the existing optical fiber reels cannot be compressed due to the fixed size of the connectors and occupy a large amount of space, a double-layer installation module for installing connectors and adapters, as well as upper and lower winding reels, is provided. The number of optical cables that can be accommodated in the box is greatly increased, the space occupation of the optical fiber reels is improved, the waste of space in the box is reduced, and the space utilization rate of the optical cable junction box is further improved.

[0024] 2. The installation module of the present invention effectively improves the installation efficiency of the adapter. When installing the adapter, the operator does not need to spend a lot of time on precise alignment and fixation, and it is easier to disassemble the adapter. In addition, the installation module can be applied to the installation of adapters of different specifications and has a wide range of applications.

[0025] 3. The conductor device of the present invention makes the line direction in the box clearer and more orderly, greatly facilitating maintenance and management work. When a network failure occurs, maintenance personnel can quickly check the line and locate the fault point, reducing maintenance time and cost. At the same time, the conductor device can cooperate with the replacement of the adapter. When the adapter is replaced, the optical cable reel needs to be pulled out. The conductor device can adjust the extension and contraction of the conductor pile according to the pulling out of the optical cable reel, avoiding the problem that the optical cable reel cannot be pulled out due to the line in the tensioned state. With the coordinated design of the main toggle plate and the single toggle plate, the extension and contraction of the conductor pile can be controlled as a whole or individually. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 Schematic diagram of the structure of the conductor device of the present invention.

[0028] Figure 3 For the present invention Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0029] Figure 4 Schematic diagram of the back structure of the wire guide device of the present invention.

[0030] Figure 5 This is a schematic structural diagram of the conductor device of the present invention after the conductor pile mounting frame is removed.

[0031] Figure 6 It is a schematic diagram of the assembly structure of the support frame and the structure thereon of the present invention.

[0032] Figure 7 It is a structural schematic diagram of the clamping rod of the present invention.

[0033] Figure 8 This is a schematic structural diagram of the optical cable reel and the structure thereon with the front cover opened according to the present invention.

[0034] Figure 9 This is a structural schematic diagram of the optical cable reel and its upper structure without the front cover and the rear cover.

[0035] Figure 10 It is a structural schematic diagram of the optical cable reel of the present invention.

[0036] Figure 11 This is a structural diagram of the installation module of the present invention.

[0037] Figure 12 This is a schematic diagram of the exploded structure of the installation module of the present invention.

[0038] Figure 13 This is a partial structural diagram of the installation module of the present invention.

[0039] Figure 14 This is a schematic diagram of the assembly structure of the mounting module of the present invention arranged on the front mounting frame.

[0040] Figure 15 This is a schematic diagram of the assembly structure of the mounting module of the present invention arranged on the rear mounting frame.

[0041] Figure 16 This is a schematic diagram of the assembly structure of the rear mounting frame provided with the mounting module and the optical cable reel of the present invention.

[0042] Figure Number:

[0043] 1- conductor device; 101- conductor pile; 102- conductor pile mounting frame; 1021- mounting slide bar; 1022- limit slot 1; 103- total toggle plate; 104- single toggle plate; 2- support frame; 3- cable reel; 301- lower winding reel; 302- upper winding reel; 303- leaf spring 1; 304- limit slot 2; 4- front mounting frame; 5- rear mounting frame; 501- pin shaft; 6- mounting module; 601- connector mounting plate; 602- adapter mounting frame; 6021- adapter mounting slot; 603- push plate; 604- sliding block; 605- leaf spring 2; 606- clamping block; 607- locking plate; 7- front cover; 701- slot; 8- rear cover; 9- clamping rod; 10- box body; 11- adapter; 12- connector. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be further specifically described below through examples and in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] In the description of the present invention, it should be noted that the terms "up", "down", "in", "out", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0046] Example:

[0047] A large-capacity optical cable junction box that is easy to install adapters, such as Figure 1 As shown, it includes a box body 10, and a wire device 1 and a support frame 2 installed in the box body 10.

[0048] like Figure 2-Figure 5 As shown, the conductor device 1 includes a conductor pile 101, a conductor pile mounting frame 102, a main toggle plate 103, and a single toggle plate 104; the conductor pile mounting frame 102 is fixedly installed in the box 10; a plurality of conductor piles 101 are provided (in this embodiment, eight groups of conductor piles 101 are provided for example), and the conductor piles 101 are arranged on the conductor pile mounting frame 102 along a vertical line. Each conductor pile 101 slides horizontally and is elastically mounted on the conductor pile mounting frame 102. In this embodiment, the conductor piles 101 are elastically connected to the conductor pile mounting frame 102 via compression springs;

[0049] When the single toggle plate 104 is manually toggled to move along the transverse groove 1022 of the limiting groove 1022, the single toggle plate 104 can push the wire pile 101 out. After the single toggle plate 104 enters the vertical groove 1, the positions of the single toggle plate 104 and the wire pile 101 are fixed. After the single toggle plate 104 is manually returned to its original position, the wire pile 101 will return to its original position under the rebound action of the compression spring.

[0050] A sub-dial plate is fixedly provided on the main toggle plate 103 corresponding to each single toggle plate 104. The sub-dial plate passes through a limit slot 1022 and is located behind the corresponding single toggle plate 104. When the main toggle plate 103 is manually toggled to move, the sub-dial plate moves in a horizontal slot 1022 of the limit slot 1022, and pushes the single toggle plate 104 and the wire pile 101 to move, so that all the wire piles 101 extend at the same time. After the sub-dial plate enters the vertical slot 1, the positions of all the single toggle plates 104 and the wire pile 101 are fixed; after the main toggle plate 103 is manually returned to its original position, the wire pile 101 will return to its original position under the rebound action of the compression spring, and at the same time push the single toggle plate 104 back to its original position.

[0051] like Figure 1 and Figures 6-10 As shown, the support frame 2 is fixedly installed in the box 10, and a number of optical cable drums 3 are slidably installed on the support frame 2; the number of optical cable drums 3 corresponds to the setting of the conductor piles 101, and are arranged on the support frame 2 along a vertical line; the front half of the optical cable drum 3 is provided with a front mounting frame 4 and a rear mounting frame 5, the front mounting frame 4 is fixedly installed at the front end of the optical cable drum 3, and the rear mounting frame 5 is located at the rear and upper part of the front mounting frame 4 and is slidably installed on the optical cable drum 3; a mounting module 6 is provided on both the front mounting frame 4 and the rear mounting frame 5; a lower winding drum 301 and an upper winding drum 302 are fixedly provided on the rear half of the optical cable drum 3, the lower winding drum 301 corresponds to the mounting module 6 on the front mounting frame 4, and the upper winding drum 302 corresponds to the mounting module 6 on the rear mounting frame 5;

[0052] A rear cover plate 8 is fixedly installed on the rear half of the optical cable drum 3, and the rear cover plate 8 is located above the upper winding drum 302 and the lower winding drum 301; a front cover plate 7 is slidably installed on the optical cable drum 3. When the front cover plate 7 is located in the front half of the optical cable drum 3, the front mounting frame 4 and the rear mounting frame 5 and the mounting module 6 thereon are protected. When the front cover plate 7 slides relatively backward onto the rear cover plate 8, the front mounting frame 4 and the rear mounting frame 5 and the mounting module 6 thereon are exposed; a card slot 701 is provided on the front cover plate 7, and a card rod 9 is slidably installed on the support frame 2. When the card rod 9 enters the card slot 701, the front cover plate 7 is fixed;

[0053] The upper winding drum 302 and the rear cover 8 are both removable to facilitate initial installation of the cable;

[0054] As a specific implementation of this embodiment, the front cover plate 7 is provided with two card slots 701 on the left and right sides, and the card rods 9 corresponding to the card slots 701 on the same side of each layer of the front cover plate 7 are fixedly connected together by a vertical rod.

[0055] like Figure 11-13 As shown, the installation module 6 includes a connector mounting plate 601, an adapter mounting frame 602, a push plate 603, a sliding block 604, a second leaf spring 605, a clamping block 606 and a locking plate 607; the connector mounting plate 601 is used to mount the connector 12, and the locking plate 607 is horizontally slidably mounted on the connector mounting plate 601. The locking plate 607 is provided with a horizontal locking groove corresponding to the connector 12, and one side of the locking groove is open. When the locking plate 607 moves in the direction of the locking groove opening, the connector 12 on the connector mounting plate 601 moves relatively in the opposite direction within the locking groove, thereby locking the connector 12;

[0056] The adapter mounting frame 602 is disposed on the front side of the connector mounting plate 601. An adapter mounting slot 6021 is provided thereon, corresponding to the adapter 11. The adapter mounting slot 6021 is disposed front-to-back with the connector 12 on the connector mounting plate 601. Each adapter mounting slot 6021 corresponds to a pair of sliding blocks 604. The sliding blocks 604 of the same pair slide symmetrically horizontally and are elastically mounted on the adapter mounting frame 602. As a specific implementation of this embodiment, the sliding blocks 604 located at the edge are elastically connected to the adapter mounting frame 602 via tension springs, while adjacent sliding blocks 604 located on the inner side are elastically connected via tension springs.

[0057] The pushing plate 603 is vertically slidably mounted on the adapter mounting frame 602; a pushing inclined surface is provided on the pushing plate 603 corresponding to each sliding block 604. When the pushing plate 603 moves upward, the sliding block 604 moves along the corresponding pushing inclined surface, and the sliding blocks 604 in the same pair approach each other; two upper and lower leaf springs 605 are fixedly mounted on each sliding block 604. The four leaf springs 605 on the sliding blocks 604 in the same pair correspond to the four corners of the adapter 11 respectively. When the sliding blocks 604 approach each other, the leaf springs 605 at the four corners position the adapter 11 so that the adapter 11 is located in the center; each sliding block 604 slides horizontally and is elastically mounted with a clamping block 606. When the sliding blocks 604 in the same pair approach each other, the two clamping blocks 606 clamp the adapter 11. As a specific implementation method of this embodiment, the clamping block 606 is elastically connected to the sliding block 604 through a compression spring (not shown in the drawings).

[0058] like Figure 9 and Figure 14 As shown, the front mounting frame 4 is fixedly mounted on the optical cable drum 3 , the connector mounting plate 6 of the mounting module 6 on the front mounting frame 4 is fixedly mounted on the front mounting frame 4 , and the adapter mounting frame 602 is horizontally slidably mounted on the front mounting frame 4 .

[0059] like Figure 9-10 and Figure 15-16 As shown, a pin 501 is installed on the side of the rear mounting frame 5 (for example, two pins 501 are provided in this embodiment), and a limiting groove 2 304 is provided on the inner side of the optical cable drum 3. The limiting groove 2 304 is L-shaped as a whole, including a vertical groove 2 and a horizontal groove 2 that are connected to each other, and the pin 601 is slidably installed in the limiting groove 2 304 on the same side; a leaf spring 1 303 is fixedly installed on the optical cable drum 3, and the rear mounting frame 5 is arranged on the leaf spring 1 303; when the pin 501 slides to the horizontal groove 2, the position of the rear mounting frame 5 is fixed and the leaf spring 1 303 is pressed downward; when the rear mounting frame 5 is pulled outward, the pin 501 moves to the vertical groove 2, and the leaf spring 1 303 will drive the rear mounting frame 5 to move upward along the vertical groove 2, thereby causing the rear mounting frame 5 to pop out; the connector mounting plate 6 of the mounting module 6 on the rear mounting frame 5 is fixedly installed on the rear mounting frame 5, and the adapter mounting frame 602 is horizontally slidably installed on the rear mounting frame 5.

[0060] The working principle of this embodiment is as follows:

[0061] The optical cable wound on the lower winding drum 301 or the upper winding drum 301 and the connector 12 installed on the connector mounting plate 601 are assembled during the initial installation.

[0062] When the adapter 11 needs to be installed or replaced, the card rod 9 will hold the front cover plate 7, pull out the optical cable tray 3, and the front mounting frame 4 and the rear mounting frame 5 will be exposed; in the normal state, in order to save space and keep the line clear and orderly, the cable between the wire pile 101 and the optical cable tray 3 is in a taut state, so when pulling out the optical cable tray 3, the corresponding wire pile 101 needs to be extended, and the corresponding single dial plate 104 or the total dial plate 103 is manually dialed to make the corresponding wire pile 101 extend;

[0063] When starting to install the adapter 11, pull the adapter mounting frame 602 forward, and the adapter 11 and the connector 12 are separated, and the push plate 603 is dialed downward, and the sliding block 604 moves under the action of the spring, and the plate spring two 605 and the clamping block 606 release the adapter 11, at this time, the original adapter 11 is removed, the new adapter 11 is installed in the adapter mounting slot 6021, the push plate 603 is dialed upward, the sliding block 604 moves, the plate spring two 605 positions the adapter 11, and the clamping block 606 clamps the adapter 11, and then the adapter mounting frame 602 is pushed backward, so that the adapter 11 is connected with the corresponding connector 12; because the plate spring two 605 has elasticity, and the clamping block 606 is elastically installed, various specifications of the adapter 11 can be adapted;

[0064] When the installation module 6 on the front mounting frame 4 is aimed, it can be normally installed; when the installation module 6 on the rear mounting frame 5 is aimed, the rear mounting frame 5 is first pulled forward, the pin shaft moves along the horizontal groove two of the limiting groove two to the vertical groove two, the rear mounting frame 5 is popped up by the plate spring one 303, and the installation work is performed, after the installation is completed, the rear mounting frame 5 is pressed downward and pushed backward, so that the mounting frame 5 returns to the original position;

[0065] After the adapter 11 is installed, the optical cable tray 3 is pushed back to the original position, and the corresponding wire pile 101 returns to the original position.

Claims

1. A large-capacity optical cable junction box that is easy to install adapters, characterized in that: It includes a box body, and a wire device and a support frame installed in the box body; The conductor device includes a conductor pile mounting frame fixedly mounted in the box, a conductor pile slidably and elastically mounted on the conductor pile mounting frame, and a single toggle plate slidably mounted on the conductor pile mounting frame for pushing the conductor pile to move; The support frame is fixedly installed in the box, and a plurality of optical cable drums are slidably installed on the support frame; the front half of the optical cable drum is provided with a front mounting frame fixedly installed on the optical cable drum, and a rear mounting frame slidably and elastically installed on the optical cable drum; the front mounting frame and the rear mounting frame are both provided with mounting modules; the rear half of the optical cable drum is fixedly provided with a lower winding drum corresponding to the mounting module on the front mounting frame, and an upper winding drum corresponding to the mounting module on the rear mounting frame; The mounting module includes a connector mounting plate fixedly mounted on the front mounting frame or the rear mounting frame, an adapter mounting frame slidably mounted on the front mounting frame or the rear mounting frame, and sliding blocks arranged in pairs, slidably and elastically mounted on the adapter mounting frame; the adapter mounting frame is provided with an adapter mounting slot, and the paired sliding blocks are arranged corresponding to the adapter mounting slot; The mounting module further includes a push plate slidably mounted on the adapter mounting frame, wherein the push plate is provided with a push inclined surface corresponding to each sliding block; when the push plate moves, the push inclined surface drives the sliding block to move, and the sliding blocks in the same pair approach each other; Each of the sliding blocks is fixedly mounted with two upper and lower leaf springs 2, and the four leaf springs 2 on the same pair of sliding blocks correspond to the four corners of the adapter respectively; A clamping block is slidably and elastically mounted on each of the sliding blocks; A locking plate is slidably mounted on the joint mounting plate, and a locking groove with an opening on one side is provided on the locking plate corresponding to the joint.

2. A large-capacity optical cable junction box that is convenient for installing adapters according to claim 1, characterized in that: A rear cover plate located above the upper winding drum and the lower winding drum is fixedly installed on the rear half of the optical cable drum.

3. A large-capacity optical cable junction box that is convenient for installing adapters according to claim 2, characterized in that: A front cover plate capable of intermittently covering the front mounting frame and the rear mounting frame and the modules mounted thereon is slidably mounted on the optical cable drum.

4. A large-capacity optical cable junction box that is convenient for installing adapters according to claim 3, characterized in that: A card slot is provided on the front cover plate, and a card rod that intermittently enters the card slot is slidably mounted on the support frame.

5. A large-capacity optical cable junction box that is convenient for installing adapters according to claim 1, characterized in that: A limiting groove 1 is provided on the conductor pile mounting frame corresponding to the single toggle plate; the limiting groove 1 includes a horizontal groove 1 and a vertical groove 1 which are interconnected. After the single toggle plate enters the vertical groove 1, the positions of the single toggle plate and the conductor pile are fixed.

6. A large-capacity optical cable junction box that is convenient for installing adapters according to claim 5, characterized in that: The conductor device also includes a main toggle plate slidably mounted on the conductor pile mounting frame; the main toggle plate is fixed with a sub-toggle plate corresponding to each single toggle plate; the sub-toggle plate is located behind the corresponding single toggle plate and can push the corresponding single toggle plate to move.

7. A large-capacity optical cable junction box that is convenient for installing adapters according to claim 1, characterized in that: A pin is installed on the side of the rear mounting frame, and a second limiting groove is provided on the inner side of the optical cable drum. The second limiting groove includes a second vertical groove and a second horizontal groove that are connected to each other. The pin is slidably installed in the second limiting groove on the same side; a leaf spring arranged below the rear mounting frame is fixedly installed on the optical cable drum; when the pin slides to the second horizontal groove, the position of the rear mounting frame is fixed and the leaf spring is pressed downward.

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