Drawer type optical fiber distribution frame

The elastic protective tube in the drawer-type optical fiber distribution frame maintains the bending radius of optical cables, addressing the issue of uncontrolled radii in existing frames and preventing signal degradation.

CN222259663UActive Publication Date: 2024-12-27NANJING BESTLINK TECH CO LTD
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Patent Information

Application Number
CN202421171000.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-27
Publication Date
2024-12-27
Estimated Expiration
2034-05-27

AI Technical Summary

Technical Problem

Existing drawer-type optical fiber distribution frames lack control structures for optical cables, leading to uncontrolled bending radii when the drawer is pulled out, which can affect signal transmission.

Method used

Incorporation of an elastic protective tube with a U-shaped structure that maintains the bending radius of optical cables by forming overlapping reserved sections, ensuring the cables are not dragged excessively and maintaining a controlled radius during drawer operation.

Benefits of technology

The elastic protective tube maintains the bending radius of optical cables, preventing signal degradation by ensuring the cables do not experience excessively small radii during drawer operations.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of optical fiber distribution equipment, in particular to a drawer type optical fiber distribution frame, which comprises a protection box, a drawer, an adapter clamping strip, an adapter and an optical fiber welding plate, a U-shaped structure which can be dragged along with drawing of the drawer and can maintain the bending radius is formed between the two ends of the elastic protection tube, an optical cable penetrates through the interior of the elastic protection tube, so that the optical cable can form two strands of overlapped reserved sections, and when the drawer is pulled out of the protection box, the overlapped reserved sections are dragged and unfolded, so that the drawer is pulled out of the protection box. When the drawer is pushed into the protection box, the length of the overlapped reserved section is increased, the optical cable is stored, meanwhile, in the drawer pulling process, through the U-shaped structure of the elastic protection tube, the bending radius of the optical cable can be maintained, the situation that transmission is affected by the too small bending radius of the optical cable can be avoided, and the elastic protection tube can protect the optical cable and prevent the optical cable from being abraded.
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Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber distribution equipment, in particular to a drawer-type optical fiber distribution frame. Background Art

[0002] The fiber optic patch panel is a wiring connection device between optical cables and optical communication equipment or between optical communication equipment. It can easily realize the connection, distribution and scheduling of optical fiber lines. Multiple fiber optic patch panels with completed wiring are installed in the cabinet for unified management. The drawer-type fiber optic patch panel consists of one or two drawers. When performing fusion splicing and line adjustment, the drawer is pulled out to perform operations outside the rack, thus providing a larger operating space.

[0003] Since the drawer of the drawer-type optical fiber distribution frame can be pulled out, a certain length of optical cable introduced into the drawer needs to be reserved. However, when reserving optical cables in the existing optical fiber distribution frame, the optical cables do not have any control structure. As the drawer is pulled out, the optical cables are dragged and their bending radius is uncontrolled. If the bending radius of the optical cable is too small, it will affect the signal transmission of the optical cable. Utility Model Content

[0004] In view of the technical problems existing in the prior art, the first aspect of the utility model provides a drawer-type optical fiber distribution frame, comprising:

[0005] A protective box, wherein the protective box is a rectangular shell having an opening at one end, and an optical cable introduction tube is provided on one side of the end surface of the protective box parallel to the opening end;

[0006] A drawer is slidably connected to the protective box by the open end of the protective box, an adapter strip is provided on one side of the drawer close to the open end of the protective box, a plurality of adapters distributed in an array are provided on the adapter strip, and a fiber fusion plate for placing fiber fusion segments is provided on the drawer;

[0007] Wherein, an elastic protective tube is provided on one side of the drawer close to the optical cable introduction tube, a first end of the elastic protective tube is fixed on the protection box and corresponds to the optical cable introduction tube, a second end of the elastic protective tube is fixed on the drawer, and a U-shaped structure is formed between the two ends of the elastic protective tube that can be dragged along with the drawer and can maintain a bending radius;

[0008] The optical cable passes through the inside of the elastic protective tube, so that the optical cable can form two overlapping reserved sections, and when the drawer is pushed or pulled, the bending radius of the optical cable is maintained.

[0009] Preferably, the first end of the elastic protective tube extends along the side of the drawer close to the optical cable lead-in tube to the optical cable lead-in tube, and a limiting edge strip parallel to the side of the drawer close to the optical cable lead-in tube is fixed, and the two parallel sides of the U-shaped structure of the elastic protective tube are limited by the side of the drawer and the limiting edge strip respectively.

[0010] Preferably, a cover plate inclined toward one side of the elastic protective tube is provided on the top of the limiting edge strip, which is used to limit the height direction of the elastic protective tube.

[0011] Preferably, both ends of the elastic protective tube are provided with tube clamps, and the two ends of the elastic protective tube are respectively fixed to the protective box and the drawer through the tube clamps.

[0012] Preferably, the drawer is provided with a fixing component at a position close to the second end of the elastic protective tube, for fixing the optical cable led out from the second end of the elastic protective tube.

[0013] Preferably, the elastic protective tube is made of polyurethane elastomer.

[0014] Preferably, a spring sheet arranged along the length direction is fixed to one side of the elastic protection tube, so as to maintain the bending radius of the elastic protection tube when being dragged.

[0015] Preferably, a slide rail is provided between the protection box and the side wall of the drawer, and the drawer is slidably connected to the protection box via the slide rail.

[0016] Preferably, a plurality of optical fiber bundle through holes are formed on a bottom surface of one end of the drawer close to the adapter card strip.

[0017] Preferably, two winding boxes are provided on the drawer, and the two winding boxes are symmetrically distributed at two ends of the optical fiber fusion plate.

[0018] Compared with the prior art, the advantages of the utility model are:

[0019] An elastic protective tube is arranged in the drawer, and a U-shaped structure is formed between the two ends of the elastic protective tube, which can be dragged as the drawer is pulled out and can maintain the bending radius; the cable passes through the inside of the elastic protective tube, so that the optical cable can form two overlapping reserved sections. When the drawer is pulled out of the protective box, the overlapping reserved sections are dragged and unfolded. When the drawer is pushed into the protective box, the length of the overlapping reserved sections increases to store the optical cable. At the same time, during the process of pulling the drawer out, the U-shaped structure of the elastic protective tube can maintain the bending radius of the optical cable, avoiding the situation that the optical cable bending radius is too small to affect the transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:

[0021] Figure 1 It is a cross-sectional view of the drawer-type optical fiber distribution frame shown in the utility model;

[0022] Figure 2 It is a schematic diagram of the elastic protection tube structure of the drawer-type optical fiber distribution frame shown in the utility model;

[0023] Figure 3 It is a schematic diagram of the limiting side strip structure of the drawer-type optical fiber distribution frame shown in the utility model.

[0024] In the figure, 1. protective box; 11. optical cable introduction tube; 12. slide rail; 2. drawer; 201. optical fiber bundle through hole; 3. adapter card strip; 31. adapter; 4. optical fiber fusion plate; 41. winding box; 5. elastic protective tube; 51. spring; 6. tube clamp; 7. fixing component; 8. limiting edge strip; 81. cover plate. DETAILED DESCRIPTION

[0025] In order to better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0026] Combination Figure 1-Figure 3 As shown, the utility model provides a drawer-type optical fiber distribution frame, comprising a protection box 1, a drawer 2, an adapter card strip 3 and an optical fiber fusion plate 4.

[0027] Combination Figure 1 As shown, the protective box 1 is configured as a rectangular shell with an opening at one end, and an optical cable introduction tube 11 is provided on one side of the end surface of the protective box 1 parallel to the open end, and the optical cable is introduced into the protective box 1 through the optical cable introduction tube 11 at the rear end of the protective box 1.

[0028] Combination Figure 1 As shown, the drawer 2 is slidably connected to the protection box 1 through the open end of the protection box 1.

[0029] In a specific embodiment, a slide rail 12 is provided between the side walls of the protection box 1 and the drawer 2, and the drawer 2 is slidably connected to the protection box 1 via the slide rail 12;

[0030] Furthermore, a plurality of fiber bundle through holes 201 are provided on the bottom surface of one end of the drawer 2 close to the adapter card strip 3 , and the optical fibers connected to the adapter 31 are introduced through the fiber bundle through holes 201 , which plays a role in classifying and organizing the optical fibers.

[0031] Combination Figure 1As shown, an adapter card strip 3 is provided on one side of the drawer 2 close to the open end of the protection box 1, and a plurality of adapters 31 distributed in an array are provided on the adapter card strip 3. The tails of the adapters 31 are all connected with pigtails. The optical cable introduced into the protection box 1 is peeled off, and the pigtails of the adapters 31 correspond to the optical fibers in the optical cable, and are fused one by one, and a sheath is set on the fusion section;

[0032] The drawer 2 is provided with an optical fiber fusion plate 4 for placing optical fiber fusion segments. A card slot is provided inside the optical fiber fusion plate 4. The fusion segment of the optical fiber is placed in the card slot of the optical fiber fusion plate 4 and protected by the optical fiber fusion plate 4.

[0033] Furthermore, two winding boxes 41 are provided on the drawer 2, and the two winding boxes 41 are symmetrically distributed at both ends of the optical fiber fusion plate 4, and the winding boxes 41 are arc-shaped structures. The excess length of optical fiber is coiled on the winding boxes 41, and the winding boxes 41 play the role of storing and limiting the bending radius of the optical fiber.

[0034] When optical cables are reserved in existing optical fiber distribution frames, there is no control structure for the optical cables. As the drawer is pulled out, the optical cables are dragged and their bending radius is uncontrolled. If the bending radius of the optical cables is too small, the signal transmission of the optical cables will be affected.

[0035] In order to protect the reserved optical fiber, Figure 1 and Figure 2 As shown, an elastic protective tube 5 is provided on one side of the drawer 2 close to the optical cable introduction tube 11, a first end of the elastic protective tube 5 is fixed on the protective box 1 and corresponds to the optical cable introduction tube 11, a second end of the elastic protective tube 5 is fixed on the drawer 2, and a U-shaped structure is formed between the two ends of the elastic protective tube 5 that can be dragged along with the drawer 2 and can maintain a bending radius;

[0036] The cable passes through the inside of the elastic protective tube 5, so that the optical cable can form two overlapping reserved sections. When the drawer 2 is pulled out of the protective box 1, the overlapping reserved sections are dragged and unfolded. When the drawer 2 is pushed into the protective box 1, the length of the overlapping reserved sections increases to store the optical cable. At the same time, during the pulling and pulling of the drawer 2, the U-shaped structure of the elastic protective tube 5 can maintain the bending radius of the optical cable to avoid the optical cable bending radius being too small to affect the transmission.

[0037] In a specific embodiment, the first end of the elastic protective tube 5 extends along the side of the drawer 2 close to the optical cable introduction tube 11 to the optical cable introduction tube 11, and a limiting edge strip 8 parallel to the side of the drawer 2 close to the optical cable introduction tube 11 is fixed, and the two parallel sides of the U-shaped structure of the elastic protective tube 5 are limited by the side of the drawer 2 and the limiting edge strip 8 respectively.

[0038] In this way, when the drawer 2 is pushed or pulled, under the action of the elastic force of the elastic protective tube 5 itself, the elastic protective tube 5 is tightly attached to the side of the drawer 2 and the limiting edge strip 8, maintaining the U-shaped structure of the elastic protective tube 5, and the bending radius of the U-shaped structure is fixed. During the dragging process, the radius will not change, and thus the bending radius of the optical cable inside the elastic protective tube 5 will not change.

[0039] Furthermore, a cover plate 81 inclined toward one side of the elastic protective tube 5 is provided on the top of the limiting edge strip 8, which is used to limit the height direction of the elastic protective tube 5 to prevent the elastic protective tube 5 from jumping upward and detaching from the limiting edge strip 8 when being dragged.

[0040] In an optional embodiment, the elastic protective tube 5 is made of polyurethane elastomer, which has good elasticity and can protect the optical cable. When the optical cable is dragged by the drawer 2, the optical cable will not come into contact with or rub against the hard drawer 2 or the limiting edge strip 8.

[0041] Combination Figure 1 As shown, both ends of the elastic protection tube 5 are provided with tube clamps 6 , and the two ends of the elastic protection tube 5 are respectively fixed to the protection box 1 and the drawer 2 through the tube clamps 6 .

[0042] Furthermore, a fixing component 7 is provided at a position of the drawer 2 near the second end of the elastic protective tube 5 for fixing the optical cable led out from the second end of the elastic protective tube 5 so that the optical cable does not slide inside the elastic protective tube 5, thereby reducing the friction between the optical cable and the elastic protective tube 5 when dragging.

[0043] In an optional embodiment, the fixing component 7 is a line card.

[0044] Combination Figure 2 As shown, a spring sheet 51 arranged along the length direction is fixed to one side of the elastic protection tube 5 to increase the elasticity of the elastic protection tube 5, thereby maintaining the bending radius of the elastic protection tube 5 when being dragged.

[0045] In combination with the above embodiments, an elastic protective tube 5 is arranged in the drawer 2, and a U-shaped structure is formed between the two ends of the elastic protective tube 5, which can be dragged as the drawer 2 is pulled out and a U-shaped structure capable of maintaining a bending radius is formed; the cable passes through the inside of the elastic protective tube 5, so that the optical cable can form two overlapping reserved sections, and when the drawer 2 is pulled out of the protective box 1, the overlapping reserved sections are dragged and unfolded, and when the drawer 2 is pushed into the protective box 1, the length of the overlapping reserved sections increases to store the optical cable. At the same time, during the pulling and drawing process of the drawer 2, the U-shaped structure of the elastic protective tube 5 can maintain the bending radius of the optical cable, thereby preventing the optical cable from having a too small bending radius that affects transmission.

[0046] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A drawer-type optical fiber distribution frame, characterized in that: include: A protection box (1), the protection box (1) being a rectangular shell with an opening at one end, and an optical cable introduction tube (11) being provided on one side of an end surface of the protection box (1) parallel to the opening end; A drawer (2) is slidably connected to the inside of the protective box (1) through the open end of the protective box (1); an adapter strip (3) is provided on one side of the drawer (2) close to the open end of the protective box (1); a plurality of adapters (31) arranged in an array are provided on the adapter strip (3); and a fiber fusion splicing plate (4) for placing fiber fusion splicing sections is provided on the drawer (2); Wherein, an elastic protective tube (5) is provided on one side of the drawer (2) close to the optical cable introduction tube (11); a first end of the elastic protective tube (5) is fixed on the protection box (1) and corresponds to the optical cable introduction tube (11); a second end of the elastic protective tube (5) is fixed on the drawer (2); and a U-shaped structure capable of being dragged along with the drawer (2) and capable of maintaining a bending radius is formed between the two ends of the elastic protective tube (5); The optical cable passes through the interior of the elastic protective tube (5), so that the optical cable can form two overlapping reserved sections, and when the drawer (2) is pushed or pulled, the bending radius of the optical cable is maintained.

2. The drawer-type optical fiber distribution frame according to claim 1, characterized in that: The first end of the elastic protective tube (5) extends along the side of the drawer (2) close to the optical cable introduction tube (11) to the optical cable introduction tube (11); a limiting edge strip (8) parallel to the side of the drawer (2) close to the optical cable introduction tube (11) is fixed; and two parallel sides of the U-shaped structure of the elastic protective tube (5) are respectively limited by the side of the drawer (2) and the limiting edge strip (8).

3. The drawer-type optical fiber distribution frame according to claim 2, characterized in that: A cover plate (81) is provided on the top of the limiting edge strip (8) and is inclined toward one side of the elastic protective tube (5), and is used to limit the height direction of the elastic protective tube (5).

4. The drawer-type optical fiber distribution frame according to claim 1, characterized in that: Both ends of the elastic protection tube (5) are provided with tube clamps (6), and the two ends of the elastic protection tube (5) are respectively fixed to the protection box (1) and the drawer (2) through the tube clamps (6).

5. The drawer-type optical fiber distribution frame according to claim 1, characterized in that: The drawer (2) is provided with a fixing component (7) at a position close to the second end of the elastic protective tube (5), which is used to fix the optical cable led out from the second end of the elastic protective tube (5).

6. The drawer-type optical fiber distribution frame according to claim 1, characterized in that: The elastic protection tube (5) is made of polyurethane elastomer.

7. The drawer-type optical fiber distribution frame according to claim 1, characterized in that: A spring sheet (51) arranged along the length direction is fixed to one side of the elastic protection tube (5) and is used to maintain the bending radius of the elastic protection tube (5) when being dragged.

8. The drawer-type optical fiber distribution frame according to claim 1, characterized in that: A slide rail (12) is provided between the side walls of the protection box (1) and the drawer (2), and the drawer (2) is slidably connected to the protection box (1) via the slide rail (12).

9. The drawer-type optical fiber distribution frame according to claim 1, characterized in that: A plurality of optical fiber bundle through holes (201) are provided on the bottom surface of one end of the drawer (2) close to the adapter card strip (3).

10. The drawer-type optical fiber distribution frame according to claim 1, characterized in that: Two winding boxes (41) are provided on the drawer (2), and the two winding boxes (41) are symmetrically distributed at two ends of the optical fiber fusion plate (4).