Optical fiber distribution cabinet facilitating installation of optical fiber terminal box

Abstract

The invention discloses an optical fiber distribution cabinet convenient to install an optical fiber terminal box, T-shaped frames are fixed above movable sliding blocks, a turnover frame is rotatably installed between the two T-shaped frames through an installation shaft block and a turnover pin, a cable storage structure is installed between the two installation rails, the optical fiber terminal box is fixed on the turnover frame through a screw, and the optical fiber terminal box is fixed on the turnover frame through a screw. The rear side of the lower portion of the overturning frame is provided with two sets of limiting structures which are distributed in a bilateral symmetry mode, two unlocking pieces are installed on the lower portion of the overturning frame in a bilateral symmetry mode, and a positioning structure is installed on the side, facing the overturning frame, of a movable sliding block. A turnover frame is slidably mounted above each group of mounting rails, a cable is fixed in a cable storage structure and is connected with an optical fiber terminal box on the turnover frame, when the optical fiber terminal box is pulled out to be overhauled and replaced, only the turnover frame needs to be directly pulled out and turned over outwards, and only the cable needs to be directly inserted into the front side when the optical fiber terminal box is remounted.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber distribution cabinets, and in particular to an optical fiber distribution cabinet for convenient installation of optical fiber terminal boxes. Background Art

[0002] Fiber optic terminal boxes primarily provide a protective connection between optical cables and pigtails, insulating the metal components of the optical cables from the housing and facilitating grounding. Existing wiring cabinet-style optical line terminals utilize a multi-layer structure, meaning multiple fiber optic terminal boxes are centrally installed within the wiring cabinet, making wiring easier for end users. When currently installing a fiber optic terminal box within a wiring cabinet, it is usually necessary to first insert the cables from the bottom of the cabinet upwards into the cabinet, routing the cables along the cable ducts within the cabinet, and then install the fiber optic wiring cabinet in a pull-out style within the cabinet. Since the fiber optic wiring is located at the rear of the fiber optic terminal box, wiring must be done at the rear of the cabinet. Once the wiring is complete, the wiring is secured to the cable ducts with cable ties, and the rear panel of the cabinet is closed. This method requires that subsequent maintenance or replacement of the optical terminal box require disassembly of the panel at the rear of the cabinet and disconnection of the cables from the fiber optic terminal box before the box can be removed. This also applies to subsequent reinstallation after maintenance, resulting in a cumbersome installation and disassembly process. Therefore, a fiber optic distribution cabinet is designed to facilitate the installation of fiber optic terminal boxes. Summary of the Invention

[0003] The present invention provides an optical fiber distribution cabinet for convenient installation of optical fiber terminal boxes, which solves the above problems.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A fiber optic distribution cabinet for convenient installation of fiber optic terminal boxes includes a distribution cabinet body, wherein columns are respectively installed at the four corners inside the distribution cabinet body, and mounting rails are installed between the two left columns and between the two right columns, and a movable slider is installed on the mounting rail for sliding back and forth, and a T-shaped frame is fixed above the movable slider, and a flip frame is rotatably installed between the two T-shaped frames by installing an axis block and a flip pin, and a cable storage structure is installed between the two mounting rails, and a fiber optic terminal box is fixed with screws on the flip frame, and two groups of symmetrically distributed limiting structures are provided on the rear side below the flip frame, and two unlocking members are symmetrically installed on the lower side of the flip frame, and the unlocking members are connected to the limiting structure, and a positioning structure is installed on the side of the movable slider facing the flip frame, and the positioning structure is connected to the limiting structure.

[0005] Preferably, two groups of side frames are provided on the left and right sides of the flip frame, and support wheels are rotatably installed under the side frames through axle pins, and the support wheels are in rolling contact with the mounting rails. When the flip frame is inside the wiring cabinet, multiple support wheels under the flip frame are in contact with the upper surface of the mounting rails. At this time, the flip frame and the mounting rails are in a horizontal state. Pull the flip frame forward, and when the flip frame is at the front end, the support wheels on the rear side of the flip frame are in the front side of the mounting rails, the support wheels are out of contact with the mounting rails, and the flip frame can be flipped downward.

[0006] Preferably, the cable storage structure includes a deflection sleeve, and the deflection sleeve is formed with a circular opening at one end close to the left mounting rail, and a rotating sleeve is welded in the circular opening. A connecting frame is fixed on the left mounting rail, and the lower end of the rotating sleeve passes through the deflection sleeve and is placed below the deflection sleeve, and the lower end of the rotating sleeve is rotatably connected to the connecting frame. The connecting frame is penetrated from top to bottom to form an opening, and the rotating sleeve is inserted into the opening and welded. The rotating sleeve is penetrated from top to bottom to form a cavity, and a notch is opened on the part of the rotating sleeve placed inside the deflection sleeve. The cable can extend into the deflection sleeve through the cavity and the notch of the rotating sleeve, which is convenient for routing. The deflection sleeve is rotatably mounted on one end away from the rotating sleeve, and the movable sleeve is rotatably connected to the longitudinal sleeve on one end away from the deflection sleeve. A transverse sleeve is fixed above the two movable sliders, and the longitudinal sleeve is welded to the transverse sleeve on one end away from the movable sleeve. The deflection sleeve, the movable sleeve and the longitudinal sleeve are all penetrated from front to back to form a wiring cavity, a wiring groove is opened above the transverse sleeve, and a plurality of notches are set on the deflection sleeve, the movable sleeve and the transverse sleeve.

[0007] Preferably, a rotating frame is welded to the end of the deflection sleeve away from the connecting frame, upper side plates are fixed to the left and right ends of the movable sleeve respectively, a rotating shaft is fixed on the rotating frame, a pin is fixed to the side of the longitudinal sleeve away from the transverse sleeve, the side of the movable sleeve close to the deflection sleeve is rotatably connected to the rotating shaft through the upper side plate, and the side of the movable sleeve close to the longitudinal sleeve is rotatably connected to the pin through the upper side plate.

[0008] Preferably, a translation frame is installed between the two mounting rails through a slider that slides back and forth. A guide groove is provided on the translation frame, and the cross-section of the guide groove is a concave structure. The lower end of the rotating shaft passes through the rotating frame and the upper side plate is placed under the upper side plate, and a guide wheel is rotatably installed on the lower end of the rotating shaft. The guide wheel is rolled in the guide groove, and the translation frame will also move back and forth with it when the position of the deflection sleeve changes, so that the right end of the deflection sleeve and the movable sleeve can always be supported so that they will not be deformed, thereby improving safety and service life.

[0009] Preferably, the unlocking member includes a plurality of straight plates fixed linearly in front and back at the lower end of the flip frame, a round hole is opened on the straight plate, an unlocking rod is inserted into the round hole for sliding back and forth, a guide roller is rotatably installed under the flip frame through an axle pin, and a handle is provided at the front end of the unlocking rod.

[0010] Preferably, the limiting structure includes a mounting frame fixed below the T-shaped frame, the mounting frame is designed in an L-structure, the mounting frame is penetrated on the left and right to form a through-hole, a pull rod is inserted in the through-hole for sliding left and right, a limiting block is provided at one end of the pull rod close to the mounting rail, a compression spring is sleeved on the pull rod, and the two ends of the compression spring are respectively in contact with the limiting block and the mounting frame, and the compression spring makes the limiting block and the pull rod always have a tendency to move toward one side of the mounting rail; The tail end of the unlocking rod is connected to a pull rope, and the other end of the pull rope is connected to the end of the pull rod away from the limit block through a guide roller. When the unlocking rod is pulled forward, the pull rope will drive the pull rod to move toward the side away from the installation track, thereby moving the limit block away together.

[0011] Preferably, a limiting member is fixed under the T-shaped frame, and a plurality of limiting grooves distributed in a circumferential array are formed on the left and right sides of the limiting member away from the mounting track, and the front of the limiting groove is inclined toward one end of the unlocking rod to form a flip inclined surface; The upper inclined surface of the limit block is designed to form a flip surface, the slope of the flip surface is the same as the slope of the flip inclined surface, the limit groove is set to a vertical surface at one end away from the flip inclined surface, the limit block as a whole is a right-angled trapezoidal structure, multiple limit grooves are distributed in an arc shape on the limit piece, and the distribution trajectory of the multiple limit grooves coincides with the motion trajectory when the limit block is flipped, the motion trajectory of the limit block is an arc structure, the center of the arc structure coincides with the axis of the flip pin, and the flip surface and the flip inclined surface are set along the motion trajectory of the limit block.

[0012] Preferably, the positioning structure includes an extension plate fixed on the front side of the T-shaped frame, the extension plate passes through the left and right sides to form an opening, a positioning rod is inserted into the opening for sliding left and right, a ring is set at the end of the positioning rod away from the mounting rail, a lifting spring is sleeved on the positioning rod, the two ends of the lifting spring are respectively abutted against the ring and the extension plate, and the lifting spring makes the positioning rod always have a tendency to move toward the side away from the mounting rail.

[0013] Preferably, the front side of one end of the positioning rod away from the ring is cut away to form a pushing surface, the front side of the mounting rail is cut away to form a pushing inclined surface, a positioning groove is opened on the inner side of the rear of the mounting rail, and the elastic force of the lifting spring is smaller than the elastic force of the compression spring; When the flip frame moves backward into position, the unlocking rod is released, and the limiting block will press the positioning rod under the action of the compression spring, so that the positioning rod is inserted into the positioning groove to position the flip frame.

[0014] Beneficial effects of the present invention: 1. By setting multiple sets of linearly distributed installation rails inside the wiring cabinet, a flip rack is slidably installed above each set of installation rails, and a cable storage structure is also installed on the installation rails. The cables are fixed in the cable storage structure and connected to the fiber optic terminal box on the flip rack. The deflection sleeve and the movable sleeve are hinged, and the movable sleeve is hinged to the transverse sleeve through the longitudinal sleeve. The cables are stored and fixed in the deflection sleeve, the movable sleeve and the transverse sleeve. When the fiber optic terminal box is taken out and installed, the total length of the cables in the cable storage structure remains unchanged. When the fiber optic terminal box is pulled out for maintenance or replacement, it only needs to be flipped outward. There is no need to remove the connection between the cables and the fiber optic terminal box at the rear side of the wiring cabinet. When reinstalling, it is only necessary to directly plug the cables in at the front side, which improves convenience. 2. The cable storage structure is provided with a translation frame that is slidably connected to the mounting rail. The translation frame is slidably connected to the deflection sleeve and the movable sleeve through the guide wheel. When the position of the deflection sleeve changes, the translation frame will also move forward and backward, thereby always supporting the right end of the deflection sleeve and the movable sleeve to prevent them from deformation, thereby improving safety and service life; 3. By setting a limit structure under the flip frame, setting a limit piece on the moving slider, and cooperating with the unlocking piece, the operator's hand needs to always be in contact with the flip frame when the flip frame flips downward, avoiding the user's failure to hold the flip frame with his hands, causing it to fall rapidly and cause injury. Even if the user releases his hands before it is flipped into place, the pull rod and the limit block always have a tendency to move toward the side of the installation track due to the compression spring. When the user releases his hands before it is flipped into place, the limit block will be stuck in the limit groove, making it impossible to continue flipping downward, avoiding rapid falling and impact, and improving safety. In conjunction with the positioning structure, the flip frame will not move inside the wiring cabinet, thereby improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a main diagram of a fiber optic distribution cabinet proposed by the present invention for convenient installation of fiber optic terminal boxes; Figure 2 for Figure 1 Schematic diagram of the structure of the center column, cable storage structure, flip frame and installation track; Figure 3 for Figure 1 Schematic diagram of the bottom of the cable storage structure, flip rack and mounting rails; Figure 4 for Figure 3 A partial enlarged schematic diagram; Figure 5 for Figure 4 The upper and lower isometric drawings; Figure 6 for Figure 5 Schematic diagram of the structure of the middle flip frame and cable storage structure; Figure 7 for Figure 6 Structural diagram of the cable storage structure; Figure 8 for Figure 5 Schematic diagram of the structure of the middle tilt frame, unlocking member and limiting structure; Figure 9 for Figure 8 Structural diagram of the middle limit structure; Figure 10 for Figure 6 Structural diagram of the moving slider and positioning structure; Figure 11 for Figure 6 Schematic diagram of the structure of the middle limit structure, positioning structure and limit parts.

[0016] Numbers in the figure: 1, wiring cabinet; 11, column; 2, fiber optic terminal box; 3, mounting rail; 31, positioning groove; 32, push slope; 4, flip frame; 41, moving slider; 411, flip pin; 412, T-shaped frame; 42, side frame; 421, support wheel; 43, limiter; 431, limit groove; 432, flip slope; 5, cable storage structure; 51, translation frame; 511, guide groove; 52, deflection sleeve; 521, rotation sleeve; 522, connecting Connecting frame; 523, rotating frame; 524, rotating shaft; 525, guide wheel; 53, movable sleeve; 531, upper side plate; 54, longitudinal sleeve; 55, transverse sleeve; 6, unlocking piece; 61, unlocking rod; 62, guide roller; 63, pull rope; 7, limiting structure; 71, mounting frame; 72, limiting block; 721, flip surface; 722, pull rod; 723, compression spring; 8, positioning structure; 81, extension plate; 82, positioning rod; 821, pushing surface; 83, lifting spring. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Reference Figures 1-11, a fiber optic distribution cabinet for convenient installation of fiber optic terminal boxes, including a distribution cabinet body 1, with columns 11 installed at the four corners inside the distribution cabinet body 1, and mounting rails 3 installed between the two left columns 11 and the two right columns 11, a movable slider 41 is installed on the mounting rail 3 for sliding back and forth, a T-shaped frame 412 is fixed above the movable slider 41, and a flip frame 4 is rotatably installed between the two T-shaped frames 412 through an installation shaft block and a flip pin 411, a cable storage structure 5 is installed between the two mounting rails 3, and a fiber optic terminal box 2 is fixed to the flip frame 4 with screws, and two groups of symmetrically distributed limiting structures 7 are provided on the rear side below the flip frame 4, and two unlocking members 6 are symmetrically installed below the flip frame 4, and the unlocking member 6 is connected to the limiting structure 7, and a positioning structure 8 is installed on the side of the movable slider 41 facing the flip frame 4, and the positioning structure 8 is connected to the limiting structure 7.

[0019] Reference Figure 2-Figure 8 , two groups of side frames 42 are provided on the left and right sides of the flip frame 4, and support wheels 421 are installed below the side frames 42 through axle pins. The support wheels 421 are in rolling contact with the mounting rails 3. When the flip frame 4 is inside the wiring cabinet 1, the multiple support wheels 421 below the flip frame 4 are in contact with the upper surface of the mounting rails 3. At this time, the flip frame 4 and the mounting rails 3 are in a horizontal state. Pull the flip frame 4 forward, and when the flip frame 4 is at the front end, the support wheels 421 on the rear side of the flip frame 4 are in the front side of the mounting rails 3, and the support wheels 421 are out of contact with the mounting rails 3, and the flip frame 4 can be flipped downward.

[0020] Reference Figure 2-Figure 7 The cable storage structure 5 includes a deflection sleeve 52, and the deflection sleeve 52 is formed with a circular opening at one end close to the left mounting rail 3, and a rotating sleeve 521 is welded in the circular opening. A connecting frame 522 is fixed on the left mounting rail 3, and the lower end of the rotating sleeve 521 passes through the deflection sleeve 52 and is placed below the deflection sleeve 52, and the lower end of the rotating sleeve 521 is rotatably connected to the connecting frame 522, and the connecting frame 522 is penetrated from top to bottom to form an opening, and the rotating sleeve 521 is inserted into the opening and welded, and the rotating sleeve 521 is penetrated from top to bottom to form a cavity, and the part of the rotating sleeve 521 placed inside the deflection sleeve 52 is provided with a notch, and the cable can pass through the cavity and notch of the rotating sleeve 521 and extend into the deflection sleeve 52, which is convenient for wiring; The end of the deflection sleeve 52 away from the rotating sleeve 521 is rotatably mounted with a movable sleeve 53, and the end of the movable sleeve 53 away from the deflection sleeve 52 is rotatably connected to a longitudinal sleeve 54. A transverse sleeve 55 is fixed above the two movable sliders 41, and the end of the longitudinal sleeve 54 away from the movable sleeve 53 is welded to the transverse sleeve 55. The deflection sleeve 52, the movable sleeve 53 and the longitudinal sleeve 54 are all penetrated from front to back to form a wiring cavity, and a wiring groove is opened above the transverse sleeve 55, and a plurality of notches are provided on the deflection sleeve 52, the movable sleeve 53 and the transverse sleeve 55. After the cable is inserted into the deflection sleeve 52 through the rotating sleeve 521, it can be inserted into the movable sleeve 53, the longitudinal sleeve 54 through the wiring cavity, and finally enter the transverse sleeve 55. The cables in the deflection sleeve 52, the movable sleeve 53 and the transverse sleeve 55 can be fixed by tying the cable tie in the notch. The cables in the transverse sleeve 55 are directly connected to the optical fiber terminal box 2, and a certain margin is left during the connection to ensure that the cables will not be pulled and broken when the optical fiber terminal box 2 is flipped.

[0021] The deflection sleeve 52 is welded with a rotating frame 523 at one end away from the connecting frame 522, and the left and right ends of the movable sleeve 53 are respectively fixed with an upper side plate 531, and a rotating shaft 524 is fixed on the rotating frame 523, and the longitudinal sleeve 54 is fixed with a pin on the side of the transverse sleeve 55 away from the longitudinal sleeve 55. The movable sleeve 53 is rotatably connected to the rotating shaft 524 on the side close to the deflection sleeve 52 through the upper side plate 531. The movable sleeve 53 is rotatably connected to the rotating shaft 524 on the side close to the longitudinal sleeve 54 through the upper side plate 531.

[0022] The translation frame 51 is installed between the two mounting rails 3 by sliding back and forth through a slider. A guide groove 511 is provided on the translation frame 51. The cross-section of the guide groove 511 is a concave structure. The lower end of the rotating shaft 524 passes through the rotating frame 523, and the upper side plate 531 is placed under the upper side plate 531. The lower end of the rotating shaft 524 is rotatably installed with a guide wheel 525, and the guide wheel 525 is rolled in the guide groove 511. The deflection sleeve 52 and the movable sleeve 53 will change their positions as the transverse sleeve 55, the flip frame 4 and the optical fiber terminal box 2 move back and forth. The set translation frame 51 will also move back and forth with the deflection sleeve 52 when the position of the deflection sleeve 52 changes, so that the right ends of the deflection sleeve 52 and the movable sleeve 53 can always be supported to prevent them from being deformed, thereby improving safety and service life.

[0023] Reference Figure 3 、 Figure 4 as well as Figure 8The unlocking member 6 includes a plurality of straight plates fixed in a front-to-back linear manner on the lower end of the flip frame 4. A round hole is opened on the straight plate, and an unlocking rod 61 is inserted into the round hole for sliding back and forth. A guide roller 62 is installed at the bottom of the flip frame 4 through an axle pin, and a handle is provided at the front end of the unlocking rod 61.

[0024] Reference Figure 4-11 The limiting structure 7 includes a mounting frame 71 fixed under the T-shaped frame 412. The mounting frame 71 is designed in an L-structure. The mounting frame 71 passes through the left and right sides to form a through-hole. A pull rod 722 is inserted into the through-hole for sliding left and right. A limiting block 72 is provided at one end of the pull rod 722 close to the mounting rail 3. A compression spring 723 is sleeved on the pull rod 722. The two ends of the compression spring 723 are respectively in contact with the limiting block 72 and the mounting frame 71. The compression spring 723 makes the limiting block 72 and the pull rod 722 always have a tendency to move toward one side of the mounting rail 3. The tail end of the unlocking rod 61 is connected to a pull rope 63, and the other end of the pull rope 63 is connected to the end of the pull rod 722 away from the limit block 72 through a guide roller 62. When the unlocking rod 61 is pulled forward, the pull rope 63 will drive the pull rod 722 to move toward the side away from the mounting track 3, thereby moving the limit block 72 away together.

[0025] A limit member 43 is fixed below the T-shaped frame 412. A plurality of limit slots 431 are formed on the left and right sides of the limit member 43 away from the mounting rail 3. The front end of the limit slot 431 is inclined toward the unlocking lever 61 to form a tilting inclined surface 432. The upper inclined surface of the limit block 72 is designed to form a flip surface 721. The slope of the flip surface 721 is the same as the slope of the flip inclined surface 432. The end of the limit groove 431 away from the flip inclined surface 432 is set as a vertical surface. The limit block 72 is an entire right-angled trapezoidal structure. The multiple limit grooves 431 are distributed in an arc shape on the limit member 43, and the distribution trajectory of the multiple limit grooves 431 coincides with the movement trajectory of the limit block 72 when it flips. The movement trajectory of the limit block 72 is an arc structure. The center of the arc structure coincides with the axis of the flip pin 411. The flip surface 721 and the flip inclined surface 432 are arranged along the movement trajectory of the limit block 72. When the flip frame 4 in the horizontal state is flipped downward, the vertical surface of the limit block 72 in the initial state abuts against the front end of the limit member 43. Restricted by the limit block 72, the flip frame 4 cannot flip downward. The limit block 72 is pulled toward the end away from the mounting rail 3 by the unlocking lever 61 and the pull rod 722. The end of the limit block 72 facing the mounting rail 3 will move away from the mounting rail 3 until the side of the limit block 72 facing the mounting rail 3 is flush with or away from the side of the limit member 43 away from the mounting rail 3. At this time, the flip frame 4 can flip downward normally; When the flip frame 4 flips downward by ninety degrees, the unlocking lever 61 is released. At this time, the limit block 72 is clamped into the limit groove 431 on the rear side under the action of the compression spring 723. When the flip frame 4 is flipped upward, the flip surface 721 on the limit block 72 contacts the flip inclined surface 432. The limit block 72 can be compressed and moved downward away from the side of the mounting rail 3, thereby allowing the flip frame 4 to flip upward normally.

[0026] Reference Figure 4-11 The positioning structure 8 includes an extension plate 81 fixed to the front side of the T-shaped frame 412. The extension plate 81 passes through the left and right sides to form an opening. A positioning rod 82 is inserted into the opening for sliding left and right. A circular ring is set at the end of the positioning rod 82 away from the mounting rail 3. A lifting spring 83 is sleeved on the positioning rod 82. The two ends of the lifting spring 83 are respectively in contact with the circular ring and the extension plate 81. The lifting spring 83 makes the positioning rod 82 always have a tendency to move toward the side away from the mounting rail 3.

[0027] The front end of the positioning rod 82 away from the ring is cut away to form a pushing surface 821. The front end of the mounting rail 3 is cut away to form a pushing inclined surface 32. A positioning groove 31 is opened on the inner side of the rear of the mounting rail 3. The elastic force of the lifting spring 83 is less than the elastic force of the compression spring 723. When the flip frame 4 is pulled forward and is at the front end, the positioning rod 82 is at the front side of the mounting rail 3. The design of the pushing surface 821 and the pushing inclined surface 32 makes the flip frame 4 in a horizontal state. When it moves backward again, the pushing surface 821 on the positioning rod 82 contacts the pushing inclined surface 32, which can make the positioning rod 82 automatically move downward away from the mounting rail 3. When the flip frame 4 moves backward into place, the unlocking rod 61 is released, and the limit block 72 will squeeze the positioning rod 82 under the action of the compression spring 723, so that the positioning rod 82 is inserted into the positioning groove 31 to position the flip frame 4.

[0028] Working principle: A plurality of linearly distributed mounting rails 3 are fixed by bolts from top to bottom on the upright posts 11 on the left and right sides of the wiring cabinet 1, and then the cable storage structure 5 and the flip frame 4 are installed on the mounting rails 3. The limiting member 43, the positioning structure 8 and the limiting structure 7 are installed on the flip frame 4 in advance. During installation, the flip frame 4 is at the front of the mounting rails 3 and is flipped downward to form a 90-degree angle with the mounting rails 3. Then, the optical fiber terminal box 2 is fixed to the flip frame 4 by screws. At this time, the limiting block 72 in the limiting structure 7 is inserted into the limiting groove 431 on the rear side of the limiting member 43. Then, the cables are arranged on the rear side of the wiring cabinet 1 and then arranged upward along the column 11, and the upper ends of the cables are passed through the cavity and the notch of the rotating sleeve 521 and extended into the deflection sleeve 52. After the cables extend into the deflection sleeve 52 through the rotating sleeve 521, they pass through the deflection sleeve 52, the movable sleeve 53 and the routing cavity on the longitudinal sleeve 54 and extend into the movable sleeve 53 and the longitudinal sleeve 54, and finally enter the transverse sleeve 55. The cables in the deflection sleeve 52, the movable sleeve 53 and the transverse sleeve 55 can be fixed by tying the cable tie in the notch groove. The cables in the transverse sleeve 55 are directly connected to the rear end of the optical fiber terminal box 2, and a certain margin is left during the connection to ensure that the cables will not be pulled and broken when the optical fiber terminal box 2 is turned over. Finally, the turning frame 4 is turned upward 90 degrees. When the turning frame 4 is turned upward 90 degrees, the limiting structure 7 installed under the turning frame 4 will also turn upward. Since the inclined surface of the limiting groove 431 facing the unlocking rod 61 is designed to form a turning inclined surface 432, and the inclined surface above the limiting block 72 is designed to form a turning surface 721. The slope of the turning surface 721 is the same as the slope of the turning inclined surface 432. Therefore, when the limiting block 72 is turned upward with the turning frame 4, the turning surface 721 on the limiting block 72 will directly contact the turning inclined surface 432 and push the limiting block 72 to move away from the mounting rail 3, and the limiting block 72 will be out of the limiting groove 431. When the flip frame 4 gradually approaches the horizontal state, the limit block 72 is completely separated from the limit member 43 and is located above the front side of the limit member 43. At this time, the limit block 72 will move toward the mounting rail 3 under the action of the compression spring 723. During the movement, the flip surface 721 of the limit block 72 will also contact the ring on the positioning rod 82, thereby pushing the positioning rod 82 to move toward the mounting rail 3. When the tilt frame 4 is completely in a horizontal state, the limit block 72 is completely pressed on the circular ring of the positioning rod 82, and the other end of the positioning rod 82 is outside the inner surface of the mounting rail 3. The multiple support wheels 421 on the tilt frame 4 are flush with the upper surface of the mounting rail 3, and the tilt frame 4 can be directly pushed inward into the wiring cabinet 1. When the tilt frame 4 is pushed inward, the pushing surface 821 on the positioning rod 82 will contact the pushing inclined surface 32, so that the positioning rod 82 and the limit block 72 move inward as a whole for a distance until the end of the positioning rod 82 away from the circular ring contacts the inner surface of the mounting rail 3. At this time, under the action of the compression spring 723, the positioning rod 82 and the limit block 72 have a tendency to move toward the side of the mounting rail 3. When the turning frame 4 moves to a new position, the positioning rod 82 will be inserted into the positioning groove 31 under the action of the compression spring 723 and the limit block 72. At this time, the entire turning frame 4 is fixed and cannot move forward or backward.

[0029] When it is necessary to inspect or replace a fiber optic terminal box 2 in the wiring cabinet 1 later, the unlocking lever 61 is pushed outward, and the pull rod 722 and the limit block 72 connected to the unlocking lever 61 by the pull rope 63 will move toward the end away from the installation rail 3, and the end of the limit block 72 facing the installation rail 3 will move away from the installation rail 3 until the side of the limit block 72 facing the installation rail 3 is flush with or away from the side of the limit member 43 away from the installation rail 3. At this time, the positioning rod 82 will be disengaged from the positioning groove 31 under the action of the lifting spring 83, and then the flip frame 4 can be pulled outward to the front; When the flip frame 4 is pulled forward, the positions of the deflection sleeve 52 and the movable sleeve 53 will change as the transverse sleeve 55, the flip frame 4 and the optical fiber terminal box 2 move forward and backward. The overall length of the cables located in the deflection sleeve 52, the movable sleeve 53 and the transverse sleeve 55 changes slightly. The translation frame 51 will also move forward and backward when the position of the deflection sleeve 52 changes, thereby always supporting the right ends of the deflection sleeve 52 and the movable sleeve 53, preventing them from being deformed, thereby improving safety and service life. When the turning frame 4 is at the front end, the support wheel 421 on the rear side of the turning frame 4 is at the front side of the mounting rail 3, and the support wheel 421 is out of contact with the mounting rail 3. At this time, the turning frame 4 can turn downward normally. When the tilting frame 4 is tilted downward by 90 degrees, it is necessary to ensure that the unlocking lever 61 is always in the forward pulling state. This ensures that the user's hand is always in contact with the tilting frame 4, preventing the tilting frame 4 from falling rapidly and causing injury due to the user's failure to support the tilting frame 4 with his hand. Even if the user releases his hand before the tilting frame 4 is fully tilted, the compression spring 723 makes the pull rod 722 and the limit block 72 always have a tendency to move toward the side of the mounting rail 3. When the user releases his hand before the tilting frame 4 is fully tilted, the limit block 72 will be stuck in the limit groove 431, making it impossible to continue tilting downward, thus preventing a rapid fall and impact, thereby improving safety. After flipping downward into place, release the unlocking lever 61. At this time, the limit block 72 is clamped into the limit groove 431 on the rear side under the action of the compression spring 723. At this time, the rear end of the fiber optic terminal box 2 is vertically facing upward, and the cable can be unplugged and the fiber optic terminal box 2 can be removed for inspection or replacement. The same operation is performed when it is installed again.

[0030] By arranging multiple groups of linearly distributed mounting rails 3 inside the wiring cabinet 1, a flip rack 4 is slidably installed above each group of mounting rails 3, and a cable storage structure 5 is also installed on the mounting rails 3. The cables are fixed in the cable storage structure 5 and connected to the fiber optic terminal box 2 on the flip rack 4. The deflection sleeve 52 and the movable sleeve 53 are hinged, and the movable sleeve 53 is hinged to the transverse sleeve 55 through the longitudinal sleeve 54. The cables are stored and fixed in the deflection sleeve 52, the movable sleeve 53 and the transverse sleeve 55. When the fiber optic terminal box 2 is taken out and installed, the total length of the cables in the cable storage structure 5 remains unchanged. When the fiber optic terminal box 2 is pulled out for maintenance or replacement, it only needs to be pulled out and flipped directly outward. There is no need to remove the connection between the cables and the fiber optic terminal box 2 at the rear side of the wiring cabinet 1. When reinstalling, it is only necessary to directly plug the cables in the front side, which improves convenience. The cable storage structure 5 is provided with a translation frame 51 that is slidably connected to the mounting rail 3. The translation frame 51 is slidably connected to the deflection sleeve 52 and the movable sleeve 53 via a guide wheel 525. When the position of the deflection sleeve 52 changes, the translation frame 51 will also move forward and backward accordingly, thereby always supporting the right ends of the deflection sleeve 52 and the movable sleeve 53 to prevent them from deformation, thereby improving safety and service life. By setting a limiting structure 7 under the flip frame 4, setting a limiting piece 43 on the movable slider 41, and cooperating with the unlocking piece 6, the operator's hand needs to always be in contact with the flip frame 4 when the flip frame 4 flips downward, avoiding the user's failure to support the flip frame 4 with his hands, causing it to fall rapidly and cause injury. Even if the user releases his hands before flipping it into place, the compression spring 723 makes the pull rod 722 and the limiting block 72 always have a tendency to move toward the side of the mounting track 3. When the user releases his hands before flipping it into place, the limiting block 72 will be stuck in the limiting groove 431, making it impossible to continue flipping downward, avoiding rapid falling and impact, and improving safety. In conjunction with the positioning structure 8, the flip frame 4 will not move when inside the wiring cabinet 1, thereby improving stability.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0033] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A fiber optic distribution cabinet that is convenient for installing fiber optic terminal boxes, characterized in that: The invention comprises a wiring cabinet (1), wherein four corners of the wiring cabinet (1) are respectively provided with columns (11), and mounting rails (3) are provided between the two left columns (11) and between the two right columns (11), and a movable slider (41) is provided on the mounting rail (3) for sliding back and forth, and a T-shaped frame (412) is fixed above the movable slider (41), and a flip frame (4) is rotatably provided between the two T-shaped frames (412) through an installation shaft block and a flip pin (411), and a cable storage structure (5) is provided between the two mounting rails (3), and an optical fiber terminal box (2) is fixed on the flip frame (4) by screws, and two groups of symmetrically distributed limiting structures (7) are provided on the rear side below the flip frame (4), and two unlocking members (6) are symmetrically provided on the lower side of the flip frame (4), and the unlocking members (6) are connected to the limiting structures (7), and a positioning structure (8) is provided on the side of the movable slider (41) facing the flip frame (4), and the positioning structure (8) is connected to the limiting structure (7).

2. The optical fiber distribution cabinet for convenient installation of optical fiber terminal boxes according to claim 1, characterized in that: Two sets of side frames (42) are provided on both the left and right sides of the turning frame (4), and support wheels (421) are rotatably mounted below the side frames (42) via axle pins, and the support wheels (421) are in rolling contact with the mounting rails (3).

3. The optical fiber distribution cabinet for convenient installation of optical fiber terminal boxes according to claim 1, characterized in that: The cable storage structure (5) includes a deflection sleeve (52), and a circular opening is formed through the upper and lower ends of the deflection sleeve (52) near the left side mounting track (3), and a rotating sleeve (521) is welded inside the circular opening. A connecting frame (522) is fixed on the left side mounting track (3), and the lower end of the rotating sleeve (521) passes through the deflection sleeve (52) and is placed below the deflection sleeve (52), and the lower end of the rotating sleeve (521) is rotatably connected to the connecting frame (522); A movable sleeve (53) is rotatably mounted on one end of the deflection sleeve (52) away from the rotating sleeve (521); a longitudinal sleeve (54) is rotatably connected to one end of the movable sleeve (53) away from the deflection sleeve (52); a transverse sleeve (55) is fixed above the two movable sliders (41); and an end of the longitudinal sleeve (54) away from the movable sleeve (53) is welded to the transverse sleeve (55).

4. The optical fiber distribution cabinet for convenient installation of optical fiber terminal boxes according to claim 3, characterized in that: A rotating frame (523) is welded to one end of the deflection sleeve (52) away from the connecting frame (522), upper side plates (531) are fixed to the left and right ends of the movable sleeve (53), a rotating shaft (524) is fixed to the rotating frame (523), a pin is fixed to the side of the longitudinal sleeve (54) away from the transverse sleeve (55), a side of the movable sleeve (53) close to the deflection sleeve (52) is rotatably connected to the rotating shaft (524) via the upper side plate (531), and a side of the movable sleeve (53) close to the longitudinal sleeve (54) is rotatably connected to the pin via the upper side plate (531).

5. The optical fiber distribution cabinet for convenient installation of optical fiber terminal boxes according to claim 4, characterized in that: A translation frame (51) is installed between the two mounting rails (3) via a slider to slide back and forth, and a guide groove (511) is provided on the translation frame (51). The lower end of the rotating shaft (524) passes through the rotating frame (523), and the upper side plate (531) is placed below the upper side plate (531). A guide wheel (525) is rotatably installed on the lower end of the rotating shaft (524), and the guide wheel (525) is rolled and placed in the guide groove (511).

6. The optical fiber distribution cabinet for convenient installation of optical fiber terminal boxes according to claim 1, characterized in that: The unlocking member (6) comprises a plurality of straight plates fixed to the lower end of the flip frame (4) in a front-to-back linear manner, wherein a round hole is provided on the straight plate, and an unlocking rod (61) is inserted into the round hole for sliding back and forth. A guide roller (62) is rotatably mounted below the flip frame (4) via an axle pin, and a handle is provided at the front end of the unlocking rod (61).

7. The optical fiber distribution cabinet for convenient installation of optical fiber terminal boxes according to claim 6, characterized in that: The limiting structure (7) includes a mounting frame (71) fixed below the T-shaped frame (412), the mounting frame (71) is designed in an L-structure, the mounting frame (71) is penetrated to form a through hole on the left and right, a pull rod (722) is inserted into the through hole for sliding left and right, a limiting block (72) is provided at one end of the pull rod (722) close to the mounting track (3), a compression spring (723) is sleeved on the pull rod (722), and the two ends of the compression spring (723) are respectively in contact with the limiting block (72) and the mounting frame (71); The tail end of the unlocking rod (61) is connected to a pull rope (63), and the other end of the pull rope (63) is connected to an end of the pull rod (722) away from the limit block (72) through a guide roller (62).

8. The optical fiber distribution cabinet for convenient installation of optical fiber terminal boxes according to claim 7, characterized in that: A limiting member (43) is fixed below the T-shaped frame (412), and a side of the limiting member (43) away from the mounting track (3) is penetrated to form a plurality of limiting grooves (431) distributed in a circumferential array. The limiting groove (431) is designed with an inclined surface at one end facing the unlocking rod (61) to form a flip inclined surface (432); The upper inclined surface of the limit block (72) is designed to form a flip surface (721), the slope of the flip surface (721) is the same as the slope of the flip inclined surface (432), and the end of the limit groove (431) away from the flip inclined surface (432) is set as a vertical surface, and the limit block (72) as a whole is a right-angled trapezoidal structure.

9. The optical fiber distribution cabinet for convenient installation of optical fiber terminal boxes according to claim 7, characterized in that: The positioning structure (8) includes an extension plate (81) fixed to the front side of the T-shaped frame (412), the extension plate (81) penetrates left and right to form an opening, a positioning rod (82) is inserted into the opening for sliding left and right, a circular ring is provided at one end of the positioning rod (82) away from the mounting rail (3), a lifting spring (83) is sleeved on the positioning rod (82), and the two ends of the lifting spring (83) are respectively in contact with the circular ring and the extension plate (81).

10. The optical fiber distribution cabinet for convenient installation of optical fiber terminal boxes according to claim 9, characterized in that: A portion of the front side of one end of the positioning rod (82) away from the ring is cut away to form a pushing surface (821), a portion of the front side of the mounting track (3) is cut away to form a pushing inclined surface (32), a positioning groove (31) is provided on the inner side of the rear of the mounting track (3), and the elastic force of the lifting spring (83) is smaller than the elastic force of the compression spring (723).

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