A pre-connected fiber optic box

Abstract

This invention relates to a pre-connected fiber optic box, comprising at least one adapter box and a connection and fixing mechanism. The adapter box includes an integrated fusion splicing and storage device comprising a box cover and a box body. The box body contains a fusion splicing and storage area, an optical splitting area located below the fusion splicing and storage area, and optical cable fixing areas located on both sides of the optical splitting area. A non-removable screw connected to the box cover is mounted on a nut seat on the box body. The connection and fixing mechanism includes a connecting back plate and multiple cable tray seats. The front back plate suspension shaft is installed in the corresponding suspension shaft protrusion slot of the box back plate. The front back plate is respectively engaged in locking slots near each suspension shaft. The cable tray openings of the cable tray seats are located on the outer side. The front and rear back plates are provided with wall-mounting holes, and the rear back plate is provided with clamp mounting holes. During the expansion process, the optical cable route is clearly defined, facilitating subsequent expansion, maintenance, and operation. This invention balances the convenience of construction and maintenance, and improves work efficiency.

Description

Technical Field

[0001] This invention relates to a pre-connected fiber optic box and to the field of optical communication equipment technology. Background Technology

[0002] Fiber optic boxes are interface devices used outdoors, in corridors, or indoors to connect trunk optical cables and distribution optical cables. As crucial communication equipment connecting users and networks, they are widely used. Fiber optic boxes typically consist of a cabinet and a hinged door, integrating functions such as cable fixing, fiber optic storage and splicing, and patch panel interconnection. With the rapid development of optical communication technology, many communication devices have been in service for over a decade, and a series of problems have gradually emerged, urgently requiring solutions. Currently, some communication equipment has significant quality and structural defects, leading to accelerated aging and even serious problems such as door detachment. Early fiber optic boxes had excessively spacious interiors; however, with the passage of time and increasing population density in most urban areas, actual demand often far exceeds the original design capacity. This allows construction teams considerable arbitrariness during construction, arbitrarily increasing equipment capacity and leading to embarrassing situations where equipment doors cannot be closed. Furthermore, since the incoming optical cable needs to be spliced ​​and fixed inside the box, some equipment lacks proper fixing devices, and the cable is often placed haphazardly. This not only fails to ensure the stable stress of the splice points but also easily leads to communication interruptions. Even more seriously, when the fiber optic cable to the home is too long, construction workers often place the cable haphazardly outside the equipment for convenience. This not only seriously affects the overall aesthetics of the equipment, but may also pose a potential threat to the normal operation of the equipment.

[0003] Existing fiber optic boxes typically employ a single-door structure, a design that presents numerous inconveniences in practical applications. Since construction and maintenance are two relatively independent work interfaces, maintenance personnel must frequently open the door each time a user connects. This is especially problematic because fiber optic boxes often incorporate multiple stacked plug-in optical splitters and increased pigtails to facilitate expansion. This expansion process requires opening the door, splicing, and routing cables, which is not only inefficient but also prone to causing confusion and damage to other internal wiring, further complicating subsequent maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide a pre-connected fiber optic box that provides clear fiber optic cable routing during capacity expansion, facilitates subsequent capacity expansion maintenance and operation, balances the convenience of construction and installation, and improves work efficiency.

[0005] The technical solution of the present invention to achieve the above-mentioned objective is: a pre-connected fiber optic box, characterized in that: it includes at least one adapter box and a connection fixing mechanism for connecting and fixing the adapter box;

[0006] The adapter box includes a cover, a body, an integrated fusion splicing storage device, and an optical splitter. The body includes four walls and a back panel. Inside the box, there is a fusion splicing storage area, an optical splitter area located below the fusion splicing storage area, and optical cable fixing areas located on both sides of the optical splitter area. The fusion splicing storage area has expansion mounting holes and at least two connecting posts on the back panel. The integrated fusion splicing storage device is mounted on the two connecting posts using fasteners. The body has a horizontal partition in the middle of the back panel, an integrated adapter seat on the bottom wall, and a connector for... The optical splitter area is formed by the horizontal partition and the vertical partitions on both sides of the adapter seat. The horizontal partition is snapped or attached to the optical splitter. The two cable holes on the horizontal partition serve as the inner optical cable channel between the optical splitter area and the fusion splicing storage area. The adapter seat is provided with multiple adapter mounting holes. The optical cable fixing area is formed between the horizontal partition, the vertical partition and the box wall of the enclosure. The box has optical cable inlet and outlet holes on both sides of the bottom box wall. The box has an optical cable fixing seat on the back panel of the optical cable fixing area. The two cable trays on the horizontal partition serve as the outer optical cable channel between the optical cable fixing area and the fusion splicing storage area.

[0007] The enclosure has nut seats at the four corners of the opening side of the enclosure wall. The upper and lower sides of the outer side of the enclosure back panel have hanging shaft protrusions. The hanging shaft protrusions have hanging shaft slots. The opening of the enclosure cover is installed at the opening of the enclosure through a sealing ring. The captive screw with a shoulder passes through the mounting holes on the concave surface of the four corners of the enclosure cover and is connected to the nut seats. The enclosure cover has expansion connection holes corresponding to the expansion mounting holes. When the two adapter boxes are connected, the hanging shaft protrusion on the upper or lower part of the front enclosure is engaged between the rear enclosure cover and the captive screw. The fastener passes through the expansion mounting holes on the front enclosure and is connected to the expansion connection holes on the rear enclosure cover, thus connecting the front enclosure to the rear enclosure cover.

[0008] The connecting and fixing mechanism includes a connecting back plate and multiple cable tray seats. The connecting back plate includes an integral front back plate, a rear back plate, and a cable reel disposed between the front and rear back plates. The front back plate is fixed with a suspension shaft with a T-shaped head corresponding to the hanging shaft protrusion. The suspension shaft is installed in the hanging shaft slot hole of the corresponding hanging shaft protrusion on the back plate. The front back plate is provided with locking slots for connecting the cable tray seats near each suspension shaft. The cable tray seats with multiple cable trays are provided with protruding T-shaped blocks. The T-shaped blocks are engaged and corresponding in the locking slots. The opening of the cable tray seat is located on the outside. The front and rear back plates are provided with wall-mounting holes, and the rear back plate is provided with clamp mounting holes.

[0009] This invention employs an adapter box and a connecting and fixing mechanism for connecting the adapter box. The adapter box body is divided into independent splicing and storage areas, optical splitting areas, and optical cable routing areas by a horizontal partition in the middle, an adapter seat on the bottom wall, and vertical partitions connecting the horizontal partition and the adapter seat on both sides. In particular, the optical splitting area is located below the splicing and storage area, while the optical cable routing area is located on both sides of the optical splitting area. Optical splitters can be detachably installed on the horizontal partition, allowing for flexible configuration. The optical cable fixing, routing, wiring, splicing, and storage are clear, and the equipment can be pre-installed in the box and connected to the user's optical cable through the adapter seat at the bottom of the adapter box. The operation is convenient, and the adapter box has a reasonable internal space layout, avoiding randomness and non-standardization during construction, ensuring the stability of the optical cable and communication quality, and providing clear routing. The cover of this invention is connected to the box body via non-detachable screws, thus requiring only one working interface. Multiple adapter boxes can be quickly connected, eliminating the need to open other adapter boxes during expansion. Another adapter box can be quickly installed on the rear adapter box on-site, where the incoming and outgoing optical cables are spliced, wired, and stored. This facilitates future expansion and maintenance operations, ensuring ease of construction and maintenance, reducing unnecessary door openings, and improving work efficiency. The connection and fixing mechanism of this invention uses a connecting backplate and multiple cable tray seats. The connecting backplate allows for quick and convenient connection to the adapter box, and also enables on-site wall mounting and clamp installation. It can also limit and fix redundant, long incoming and outgoing optical cables, reducing damage to existing cables and significantly lowering the difficulty of later maintenance. Attached Figure Description

[0010] The embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0011] Figure 1 This is a schematic diagram of the disassembled structure of the pre-connected fiber optic box of the present invention.

[0012] Figure 2 This is a three-dimensional structural diagram of the pre-connected fiber optic box of the present invention.

[0013] Figure 3 This is a schematic diagram of the pre-connected fiber optic box structure after connecting two adapter boxes according to the present invention.

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the adapter box of the present invention.

[0015] Figure 5 This is a front view structural diagram of the adapter box of the present invention.

[0016] Figure 6 yes Figure 5 A top-view structural diagram.

[0017] Figure 7 yes Figure 5A side view structural diagram.

[0018] Figure 8 This is a schematic diagram of the integrated welding and storage device of the present invention.

[0019] Figure 9 This is a three-dimensional structural diagram of the cover of the adapter box of the present invention.

[0020] Figure 10 This is a front view of the cover of the adapter box of the present invention.

[0021] Figure 11 This is a schematic diagram of the three-dimensional structure of the connecting back plate of the present invention.

[0022] Figure 12 This is a front view schematic diagram of the connecting back plate structure of the present invention.

[0023] Figure 13 This is a side view of the connecting back plate structure of the present invention.

[0024] Figure 14 This is a schematic diagram of the structure of the grooved seat of the present invention.

[0025] Figure 15 This is a schematic diagram of the non-detachable screw of the present invention.

[0026] Wherein: 1—Box cover, 1-1—Connecting part, 1-11—Box cover stop, 1-2—Cover plate, 1-21—Concave surface, 1-22—Lower end face, 1-23—Upper end face, 1-24—Mounting hole, 1-3—Mark, 1-4—Expanded connection hole, 2—Keep-on screw, 2-1—Screw head, 2-2—Shoulder, 2-3—Screw, 3—Box body, 3-1—Box wall, 3-11—Box body stop, 3-12—Nut seat, 3-13—Nut, 3-14—Outer stiffener plate, 3-2—Box back plate, 3-21—Hanging shaft protrusion, 3-22—Expanded mounting hole, 3-23—Connecting column, 3-3—Horizontal partition, 3-31—Cable tray, 3-32—Cable through hole, 3-4—Vertical partition, 3-5—Adapter seat, 3 -51—Adapter mounting hole, 3-6—Grounding post, 3-7—Optical cable fixing seat, 3-8—Optical cable inlet / outlet hole, 4—Integrated splice storage device, 4-1—Base plate, 4-2—Outer cable baffle plate, 4-3—Baffle plate, 4-4—Expansion through hole, 4-5—Limiting sleeve, 4-6—Inner fiberboard coil, 4-7—Fiber ties, 5—Connecting back plate, 5-1—Front back plate, 5-2—Rear back plate, 5-3—Cable coil, 5-4—Wall-mount mounting hole, 5-5—Suspension shaft, 5-6—Locking slot, 5-61—Notch, 5-62—Vertical limiting post, 5-63—Limiting slot, 5-7—Clamp mounting hole, 5-8—Locking post, 6—Cable trough seat, 6-1—Cable trough, 6-2—T-block, 7—Dust cover, 7-1—Rotating box 7-11—Hinge shaft, 7-2—Snap fastener, 7-2—Optical cable limiting box, 7-21—Optical cable limiting groove, 7-22—Snap fastener, 8—Adapter, 9—Optical splitter. Detailed Implementation

[0027] See Figures 1-3 As shown, this invention provides a pre-connected fiber optic box, comprising at least one adapter box and a connection and fixing mechanism for connecting and fixing the adapter box. The adapter box splices and secures the incoming optical cable to the pigtails inside, and coils the incoming optical cable and pigtails. It can also, as needed, split the light through an optical splitter 9 and connect it to the user's optical cable through an adapter 8 at the bottom of the adapter box, resulting in a clear routing. See [link / reference]. Figure 3 As shown, the expansion process does not require opening the rear adapter box. The front adapter box enables the splicing, fixing, and storage of the incoming and outgoing optical cables. It also allows for the quick connection of multiple adapter boxes, facilitating future expansion and maintenance operations. Furthermore, the connecting and fixing mechanism facilitates on-site wall mounting and clamp installation of the adapter boxes.

[0028] See Figures 1-8As shown, the adapter box of the present invention includes a cover 1, a body 3, an integrated welding and storage device 4, and an optical splitter 9. The body 3 includes four walls 3-1 and a back panel 3-2. The body 3 of the present invention is made of high-quality engineering plastic and is injection molded in one piece. Metal parts are embedded in the body 3. The body 3 is provided with a welding and storage area, an optical splitter area located below the welding and storage area, and optical cable fixing areas located on both sides of the optical splitter area. The present invention provides an expansion mounting hole 3-22 and at least two connecting posts 3-23 on the back panel 3-2 in the welding and storage area. The expansion mounting hole 3-22 is located between the two connecting posts 3-23. The integrated welding and storage device 4 is installed on the two connecting posts 3-23 by fasteners.

[0029] See Figure 1 , 8 As shown, the integrated welding storage device 4 of the present invention includes a base plate 4-1. The base plate 4-1 has a limiting sleeve 4-5 corresponding to two connecting posts 3-23 and an expansion through hole 4-4 in its middle. When the limiting sleeve 4-5 is placed on the two connecting posts 3-23, the base plate 4-1 is fixed to the back plate 3-2 by screws passing through the holes in the limiting sleeve 4-5 and screwing them onto the connecting posts 3-23. The expansion through hole 4-4 on the upper part of the base plate 4-1 connects to the rear cover 1. The expansion connection holes 1-4 on the top correspond to the locking pins 5-8 on the front back plate 5-1 and the connecting back plate 5. By passing screws through the expansion through holes 4-4 on the bottom plate 4-1 and the expansion mounting holes 3-22 on the housing 3, the housing 3 is connected to the rear cover 1, thus enabling the connection of multiple adapter boxes. Simultaneously, screws are used to connect the housing 3 to the connecting back plate 5, securing it to the connecting back plate 5. See... Figure 1 , 8 As shown, the base plate 4-1 of this invention has integrated protective slots on its upper and lower sides, formed by multiple baffles 4-3 arranged side by side. After the stored pigtail is spliced ​​with the incoming optical cable, it is placed in the protective slots to fix and protect the optical cable at the splice point. The baffles 4-3 on the base plate 4-1 of this invention have guide slopes or guide arc surfaces on both sides that tilt towards the center, allowing the optical cable to be coiled and stored with a certain curvature. See... Figure 1 , 8 As shown, the base plate 4-1 of this invention has non-connected outer cable baffles 4-2 around its four perimeter. The outer cable baffles 4-2 have outer fiber baffles at both ends. These baffles guide the incoming optical cable from the optical cable fixing area to the splicing and storage area for splicing with the pigtail. This allows the incoming optical cable and the internal pigtail to travel, splice, and be protected through independent paths, preventing interference between the optical cables and facilitating management and maintenance. See [link to relevant documentation]. Figure 1 , 8As shown, the outer baffle 4-3 of the present invention has an outwardly extending outer fiber baffle plate at its top, and the bottom plate 4-1 has arc-shaped inner fiber baffle plates 4-6 on both sides. The inner fiber baffle plates 4-6 have inward and outward inner fiber baffle plates in the middle of the top. The lower two sides of the bottom plate 4-1 form optical cable channels, which introduce the optical cable into the fusion splicing storage area and fusion splice it with the pigtail. The cable can be inserted into the corresponding protective slots in sequence, and the excess optical fiber can be stored in the integrated fusion splicing storage device 4 for convenient on-site construction. The bottom plate 4-1 is provided with fiber ties 4-7 at the optical cable channel to facilitate the binding of the optical cable and keep the line entering and leaving the fusion splicing storage area clear.

[0030] See Figures 4-7 As shown, the enclosure 3 of the present invention has a horizontal partition 3-3 in the middle of the back panel 3-2, an integrated adapter seat 3-5 on the bottom wall 3-1, and an optical splitting area formed by vertical partitions 3-4 connecting the horizontal partition 3-3 and the adapter seat 3-5 on both sides. The adapter seat 3-5 extends into the enclosure. Therefore, while improving the strength of the enclosure 3 through the horizontal partition 3-3 and the vertical partition 3-4, the enclosure 3 can also be divided into an independent fusion splicing storage area, an optical splitting area, and an optical cable routing area, which can flexibly configure optical cable routing, fusion splicing, wiring, and storage.

[0031] See Figures 4-7 As shown, an optical splitter 9 is snapped or attached to the transverse partition 3-3 of this invention. The optical splitter 9 is detachably installed on the transverse partition 3-3. The optical splitter 9 splits the light into several optical fibers, which are then connected to the user's optical cable via an adapter 8. This invention allows for on-site installation of the optical splitter 9, or it can be pre-connected by inserting the output optical cable connector of the optical splitter 9 into the adapter 8 to connect to the user's optical cable. See [link to diagram]. Figures 4-7 As shown, the two cable passage holes 3-32 on the transverse partition 3-3 of the present invention serve as the inner optical cable channels between the optical splitting area and the fusion splicing storage area, allowing the input optical cable or pigtail on the optical splitter 9 to pass through the cable passage holes 3-32 and enter the optical splitting area. The adapter base 3-5 is provided with multiple adapter mounting holes 3-51, and multiple adapters 8 are installed in the corresponding adapter mounting holes 3-51, thus facilitating the connection of the output optical cable connector after splitting to the corresponding adapter 8 and the user optical cable connector plugged into the adapter 8.

[0032] See Figures 4-7As shown, the horizontal partition 3-3, the vertical partition 3-4, and the box wall 3-1 of the box body 3 form an optical cable fixing area. The box body 3 has optical cable inlet / outlet holes 3-8 on both sides of the bottom box wall 3-1. An optical cable fixing seat 3-7 is provided on the back panel 3-2 of the box body 3 in the optical cable fixing area. The optical cable fixing seat 3-7 is a pressure plate with an arc shape in the middle, while a pressure plate seat is provided on the back panel 3-2. The optical cable fixing seat 3-7 is installed on the pressure plate seat by fasteners. The optical cables introduced into and out of the box are limited by the optical cable fixing seat 3-7. The two horizontal partitions 3-3... The cable tray 3-31 serves as the external optical cable channel between the optical cable fixing area and the splicing storage area. Therefore, the incoming optical cable can be introduced into the box 3 through the optical cable inlet / outlet hole 3-8 at the bottom of the box wall 3-1. The incoming optical cable is then limited in the optical cable fixing area. Similarly, the outgoing optical cable is fixed by the optical cable fixing seat 3-7 and then led out of the box 3 through the optical cable inlet / outlet hole 3-8. The optical cable routing is clear. The present invention provides optical cable fixing areas on both sides of the box 3 to facilitate the fixing of the incoming and outgoing optical cables. The incoming optical cable can also be protected by passing through the grounding post 3-6.

[0033] See Figures 4-7 As shown, the box body 3 of the present invention has nut seats 3-12 at the four corners of the opening side of the box wall 3-1. These nut seats 3-12 are connected by captive screws 2. The upper and lower sides of the outer side of the box back plate 3-2 have hanging shaft protrusions 3-21, each with a hanging shaft groove. The lower part of the hanging shaft groove has an opening for the T-shaped head of the hanging shaft protrusion 3-21 to pass through and a guide groove smaller than the opening. This allows the box body 3 to be quickly hung on the suspension shaft 5-5 connecting the back plate 5. The opening of the box cover 1 of the present invention is installed at the opening of the box body 3 by a sealing ring. Captive screws 2 with shoulders pass through the mounting holes 1-24 on the concave surfaces 1-21 at the four corners of the box cover 1 and are connected to the nut seats 3-12, sealing the box cover 1 onto the box body 3. See [link to product details]. Figure 15 As shown, the captive screw 2 of this invention is multi-shoulder shaped and made of metal. The head 2-1 has a cross-shaped groove, and the rear of the head has a shoulder 2-2. The screw 2-3 has threads at the tail. The captive screw 2 is pre-installed on the cover 1 and connected to the housing 3, allowing for product stacking and expansion. See [link / reference]. Figures 4-7 As shown, the housing 3 of the present invention has a housing stop 3-11 on the opening side of the housing wall 3-1, and the housing cover 1 has a corresponding housing cover stop 1-11. A U-shaped rubber seal is set between the housing stop 3-11 and the housing cover stop 1-11. The captive screw 2 is used to install the housing cover 1 on the housing 3 to achieve a seal between the housing cover 1 and the housing 3. The back plate 3-2 of the housing is located above the optical cable fixing seat 3-7 and is also provided with a grounding post 3-6 to protect the optical cable.

[0034] See Figure 9 , 10As shown, the cover 1 of the present invention is provided with an expansion connection hole 1-4 corresponding to the expansion mounting hole 3-22. When the two adapter boxes are connected, the hanging shaft protrusion 3-21 on the upper part or the hanging shaft protrusion 3-21 on the lower part of the front box body is engaged between the rear box cover 1 and the non-removable screw 2. The fastener passes through the expansion mounting hole 3-22 on the front box body 3 and is connected to the expansion connection hole 1-4 on the rear box cover 1. The fastener can be a self-tapping screw to connect the front box body 3 to the rear box cover 1, so as to realize the connection of the two adjacent adapter boxes when expanding.

[0035] See Figure 9 , 10 As shown, the box cover 1 of the present invention includes a connecting part 1-1 with a box cover stop 1-11 and a cover plate 1-2 with a protruding connecting part 1-1. The cover plate 1-2 has concave surfaces 1-21 at the four corners. The captive screw 2 passes through the mounting hole 1-24 on the concave surface 1-21 and is screwed onto the nut 3-13 embedded in the nut seat 3-12. The top of the captive screw 2 after installation does not exceed the top surface of the box cover 1. The head of the captive screw 2 and the lower end face 1-22 of the upper concave surface 1-21 and the head of the captive screw 2 and the upper end face 1-23 of the lower concave surface 1-21 are used to lock and limit the hanging shaft protrusion 3-21. The box cover 1 has a mark 1-3 for the upper and lower positions on the outside. The mark 1-3 can be triangular, so it is convenient to identify the direction of the box cover 1 and can be installed quickly.

[0036] See Figures 1-3 as well as Figures 11-14 As shown, the connecting and fixing mechanism of the present invention includes a connecting back plate 5 and multiple cable tray seats 6. The connecting back plate 5 includes an integral front back plate 5-1, a rear back plate 5-2, and a cable reel 5-3 disposed between the front back plate 5-1 and the rear back plate 5-2. The cable reel 5-3 can be used to coil up excess optical cables for storage. A suspension shaft 5-5 with a T-shaped head corresponding to the hanging shaft protrusion 3-21 is fixed on the front back plate 5-1. The T-shaped head on the outside of the suspension shaft 5-5 serves as a limiting boss. The suspension shaft 5-5 is installed in the hanging shaft slot of the corresponding hanging shaft protrusion 3-21 on the back plate 3-2. The T-shaped head of the suspension shaft 5-5 enters the hanging shaft slot from the opening of the hanging shaft slot. Under its own weight, the hanging shaft protrusion 3-21 is positioned in the guide groove, quickly installing the housing 3 onto the connecting back plate 5. See Figures 11-13 As shown, the connecting back plate 5 of the present invention has a locking post 5-8 on the side of the front back plate 5-1 facing the box body 3. The locking post 5-8 has a connecting hole. When the hanging shaft protrusion 3-21 on the box body 3 is installed on the suspension shaft 5-5, the box body 3 and the connecting back plate 5 are fixed by screws passing through the expansion mounting hole 3-22 on the box body 3 and screwing them onto the locking post 5-8, thereby improving the reliability of the connection.

[0037] See Figures 11-14As shown, the front back plate 5-1 of the present invention has locking slots 5-6 on both sides near each suspension shaft 5-5 for connecting the cable tray seat 6. The cable tray seat 6, with multiple cable trays 6-1, has protruding T-shaped blocks 6-2. The T-shaped blocks 6-2 engage with the corresponding locking slots 5-6. The openings of the cable trays 6-1 of the cable tray seat 6 are located on the outer side. By engaging with the T-shaped blocks 6-2 of the cable tray seat 6 in the corresponding locking slots 5-6, the cable tray seat 6 can be quickly installed on the connecting back plate 5. Additional excess optical cables are coiled by engaging the corresponding cable trays 6-1 on the cable tray seats 6 at the four corners. Because the cable trays 6-1 have two or more arc surfaces along their height, better layered coiling can be achieved. See Figure 1 and 11 As shown in Figure 14, the front back panel 5-1 and the rear back panel 5-2 are provided with wall-mounting holes 5-4, and the rear back panel 5-2 is provided with clamp mounting holes 5-7. The front back panel 5-1 and the rear back panel 5-2 are provided with wall-mounting holes 5-4 around the perimeter near the outer side of the coil 5-3. The connecting back panel 5 is installed on the wall at the site by fasteners passing through the wall. The rear back panel 5-2 is provided with clamp mounting holes 5-7 on the inner side of the coil 5-3. The connecting back panel 5 is connected to the column at the site by clamp installation.

[0038] See Figures 11-14 As shown, the locking slot 5-6 on the front back plate 3-1 of the present invention includes a notch 5-61 through which the upper T-shaped block 6-2 passes and a limiting groove 5-63 for limiting the T-shaped block 6-2 at the bottom. The locking slot 5-6 also has a vertical limiting post 5-62 at the middle of the notch 5-61 to limit the top of the T-shaped block 6-2. The T-shaped block 6-2 of the present invention has an inclined surface, and the limiting groove 5-63 corresponds to the inclined surface of the T-shaped block 6-2, which facilitates the guiding installation. When the T-shaped block 6-2 enters the locking slot 5-6 through the notch 5-61 and moves downward, the T-shaped block 6-2 is placed in the limiting groove 5-63. At the same time, the vertical limiting post 5-62 pushes against the top of the T-shaped block 6-2 to prevent the wire trough seat 6 from moving out of the locking slot 5-6. Therefore, the wire trough seat 6 can be installed quickly and can be installed according to the site requirements.

[0039] See Figures 1-3 As shown in Figures 5-7, a dust cover 7 is also installed at the bottom of the housing 3 of the present invention. The dust cover 7 includes a spliced ​​rotating box 7-1 and a fixed optical cable limiting box 7-2. The two sides of the rotating box 7-1 are mounted on two outer stiffening plates 3-14 at the bottom of the housing wall 3-1 through corresponding hinge shafts 7-1 and can rotate. The rotating box 7-1 has outwardly extending buckles 7-2 on both sides. Figure 6 , 7As shown, the rotating box 7-1 can be rotated and opened during installation, facilitating the insertion of the optical cable connector into the corresponding adapter 8. The optical cable limiting box 7-2 of this invention is fixed to the bottom wall 3-1 with screws, and the bottom plate of the optical cable limiting box 7-2 has optical cable limiting grooves 7-21 corresponding to the adapter mounting holes 3-51. These grooves can limit the user's optical cable. Since six adapter mounting holes 3-51 can be used to install 12 adapters 8, each optical cable limiting groove 7-21 limits two user optical cables, significantly reducing damage to the optical cable caused by external forces and improving the reliability of the optical cable routing. See [link / reference] Figure 2 , 7 As shown, the optical cable limiting box 7-2 of the present invention has fasteners 7-22 on both sides. The opening side of the rotating box 7-1 is connected to the opening side of the fixed optical cable limiting box 7-2. The buckle 7-2 on the rotating box 7-1 is engaged with the fastener 7-22 on the optical cable limiting box 7-2. The dust cover 7 protects the optical cable connector inserted into the adapter 8 and plays a good role in preventing dust from the optical fiber box.

Claims

1. A pre-connected fiber optic box, characterized in that: It includes at least one adapter box and a connection and fixing mechanism for connecting and fixing the adapter box; The adapter box includes a cover (1), a body (3), an integrated fusion splicing storage device (4), and an optical splitter (9). The body (3) includes four walls (3-1) and a back panel (3-2). The body (3) contains a fusion splicing storage area, an optical splitter area located below the fusion splicing storage area, and optical cable fixing areas located on both sides of the optical splitter area. The fusion splicing storage area has an expansion mounting hole (3-22) and at least two connecting posts (3-23) on the back panel (3-2). The integrated fusion splicing storage device (4) is installed on the two connecting posts (3-23) by fasteners. The body (3) has a partition (3-3) in the middle of the back panel (3-2), an integrated adapter seat (3-5) on the bottom wall (3-1), and a connector between the partition (3-3) and the adapter. The optical splitting area is formed by the vertical partitions (3-4) on both sides of the seat (3-5). The optical splitter (9) is snapped or attached to the horizontal partition (3-3). The two cable holes (3-32) on the horizontal partition (3-3) serve as the inner optical cable channel between the optical splitting area and the fusion storage area. The adapter seat (3-5) is provided with multiple adapter mounting holes (3-51). The optical cable fixing area is formed between the horizontal partition (3-3), the vertical partition (3-4) and the box wall (3-1) of the box body (3). The box body (3) is provided with optical cable inlet and outlet holes (3-8) on both sides of the bottom box wall (3-1). The box body (3) is provided with an optical cable fixing seat (3-7) on the back plate (3-2) of the optical cable fixing area. The two cable trays (3-31) on the horizontal partition (3-3) serve as the outer optical cable channel between the optical cable fixing area and the fusion storage area. The box body (3) has nut seats (3-12) at the four corners of the opening side of the box wall (3-1). The upper and lower sides of the outer side of the box back plate (3-2) have hanging shaft protrusions (3-21). The hanging shaft protrusions (3-21) have hanging shaft slots. The opening of the box cover (1) is installed at the opening of the box body (3) by a sealing ring. The non-removable screws (2) with shoulders pass through the mounting holes (1-24) on the concave surfaces (1-21) at the four corners of the box cover (1) and are connected to the nut seats (3-12). The box cover (1) is provided with an expansion connection hole (1-4) corresponding to the expansion mounting hole (3-22). When the two adapter boxes are connected, the hanging shaft protrusion (3-21) on the upper part or the hanging shaft protrusion (3-21) on the lower part of the front box body (3) is engaged between the rear box cover (1) and the non-detachable screw (2). The fastener passes through the expansion mounting hole (3-22) on the front box body (3) and is connected to the expansion connection hole (1-4) on the rear box cover (1), so that the front box body (3) is connected to the rear box cover (1). The connecting and fixing mechanism includes a connecting back plate (5) and multiple cable tray seats (6). The connecting back plate (5) includes an integral front back plate (5-1), a rear back plate (5-2), and a cable reel (5-3) disposed between the front back plate (5-1) and the rear back plate (5-2). A suspension shaft (5-5) with a T-shaped head corresponding to the hanging shaft protrusion (3-21) is fixed on the front back plate (5-1). The suspension shaft (5-5) is installed in the hanging shaft slot of the corresponding hanging shaft protrusion (3-21) on the back plate (3-2). The back plate (5-1) is provided with locking slots (5-6) for connecting the wire groove seat (6) near each suspension shaft (5-5). The wire groove seat (6) with multiple wire grooves (6-1) is provided with a protruding T-shaped block (6-2). The T-shaped block (6-2) is engaged and corresponds in the locking slot (5-6). The opening of the wire groove (6-1) of the wire groove seat (6) is located on the outside. The front back plate (5-1) and the rear back plate (5-2) are provided with wall-mounting holes (5-4). The rear back plate (5-2) is provided with clamp mounting holes (5-7).

2. A pre-connected fiber optic box according to claim 1, characterized in that: The bottom of the enclosure (3) is also equipped with a dust cover (7), which includes a rotating box (7-1) and an optical cable limiting box (7-2). The two sides of the rotating box (7-1) are mounted on two outer stiffening plates (3-14) at the bottom of the enclosure wall (3-1) via corresponding hinge shafts (7-1) and can rotate. The rotating box (7-1) has outwardly extending buckles (7-2) on both sides. The optical cable limiting box (7-2) is fixed with screws. On the bottom wall (3-1) of the box, and on the bottom plate of the optical cable limiting box (7-2), there is an optical cable limiting groove (7-21) corresponding to each adapter mounting hole (3-51). The optical cable limiting box (7-2) has fasteners (7-22) on both sides. The opening side of the rotating box (7-1) is connected to the opening side of the fixed optical cable limiting box (7-2). The buckle (7-2) on the rotating box (7-1) is engaged with the fastener (7-22) of the optical cable limiting box (7-2).

3. A pre-connected fiber optic box according to claim 1, characterized in that: The box cover (1) includes a connecting part (1-1) with a box cover stop (1-11) and a cover plate (1-2) with a protruding connecting part (1-1). The cover plate (1-2) has concave surfaces (1-21) at the four corners. The captive screw (2) passes through the mounting hole (1-24) on the concave surface (1-21) and is screwed onto the nut (3-13) embedded in the nut seat (3-12). The top of the captive screw (2) after installation does not exceed the top surface of the box cover (1). The head of the captive screw (2) and the lower end face (1-22) of the upper concave surface (1-21) and the head of the captive screw (2) and the upper end face (1-23) of the lower concave surface (1-21) are used to lock and limit the hanging shaft protrusion (3-21). The box cover (1) is marked with upper and lower positions (1-3) on the outside.

4. A pre-connected fiber optic box according to claim 1, characterized in that: The enclosure (3) has an enclosure stop (3-11) on the opening side of the enclosure wall (3-1), and a U-shaped rubber seal is provided between the enclosure stop (3-11) and the enclosure cover stop (1-11). The back panel (3-2) of the enclosure is located above the optical cable fixing seat (3-7) and is also provided with a grounding post (3-6).

5. A pre-connected fiber optic box according to claim 1, characterized in that: The connecting back plate (5) has a locking post (5-8) on the side of the front back plate (5-1) facing the box (3). The locking post (5-8) has a connecting hole. The screw passes through the expansion mounting hole (3-22) on the box back plate (3-2) and is screwed onto the locking post (5-8) to fix the box (3) and the connecting back plate (5).

6. A pre-connected fiber optic box according to claim 1, characterized in that: The locking slot (5-6) of the front back panel (5-1) includes a notch (5-61) through which the upper T-shaped block (6-2) passes and a limiting groove (5-63) at the bottom for limiting the T-shaped block (6-2). The locking slot (5-6) is also provided with a vertical limiting post (5-62) in the middle of the notch (5-61) to limit the top of the T-shaped block (6-2). The T-shaped block (6-2) enters the locking slot (5-6) through the notch (5-61) and moves downward, setting the T-shaped block (6-2) in the limiting groove (5-63), while the vertical limiting post (5-62) presses against the top of the T-shaped block (6-2).

7. A pre-connected fiber optic box according to claim 1, characterized in that: The integrated welding and storage device (4) includes a base plate (4-1). The base plate (4-1) has a limiting sleeve (4-5) corresponding to two connecting posts (3-23) and an expansion through hole (4-4) in the middle. The limiting sleeve (4-5) is installed on the connecting post (3-23). ​​Fasteners pass through the limiting sleeve (4-5) and are installed on the connecting post (3-23). ​​The base plate (4-1) has non-connected outer baffle plates (4-2) around its four sides. The outer baffle plates (4-2) are located at both ends. The top is provided with an outer fiber baffle, and the bottom plate (4-1) has a protective slot on the upper and lower sides, which is composed of multiple baffles (4-3) arranged side by side. The outer baffle (4-3) has an outwardly extending outer fiber baffle on the top. The bottom plate (4-1) has an arc-shaped inner fiber plate (4-6) on both sides, and the inner fiber plate (4-6) has an inward and outward inner fiber baffle in the middle of the top. The bottom two sides of the bottom plate (4-1) form an optical cable channel, and the bottom plate (4-1) is provided with a fiber tie (4-7) at the optical cable channel.

8. A pre-connected fiber optic box according to claim 7, characterized in that: The baffle (4-3) on the base plate (4-1) has a guide slope or guide arc surface that is inclined towards the middle on both sides.

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