A sliding clamping structure and an optical fiber disc fixing device

CN122902023APending Publication Date: 2026-10-13SHKE COMM TECH
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Patent Information

Application Number
CN202611119632.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-27
Publication Date
2026-10-13

AI Technical Summary

Technical Problem

[0005]光纤盘固定装置和光纤盘卡接固定,常需要考虑卡接稳固性使得光纤盘不易移位,但因为卡固比较牢靠,又导致不易拆卸

Benefits of technology

1.通过分步式解锁结构,先分离定位块与抵接块,再分离第一卡接块与第二卡接块,既保证了光纤盘在正常工作状态下的牢固固定,又可通过操作端轻松实现拆卸;

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Abstract

The application discloses a sliding clamping structure and an optical fiber disc fixing device, and relates to the technical field of communication equipment technology, which comprises a sliding strip, a first side plate and a second side plate used for cooperation with the sliding strip; the first side plate is provided with a first clamping block, one side wall of the sliding strip is provided with a second clamping block used for cooperation with the first clamping block, and the first side plate is provided with a first operation end used for driving the second clamping block to move; the second side plate is provided with a positioning block, the other side wall of the sliding strip is provided with an abutting block used for abutting against the positioning block, and the sliding strip is provided with a second operation end used for driving the positioning block to move; after the abutting block and the positioning block are separated, the first side plate can slide so that the first clamping block and the second clamping block are separated. The application has the effect that the optical fiber disc fixing device and the optical fiber disc can be conveniently disassembled, and the connection stability of the clamping structure is not easily affected.
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Description

Technical Field

[0001] This application relates to the technical field of communication equipment technology, and in particular to a sliding snap-fit ​​structure and an optical fiber disk fixing device. Background Technology

[0002] During the installation and maintenance of fiber optic communication equipment, the fiber optic tray, as the core component carrying the fiber optic line, directly affects the convenience of fiber optic deployment and the standardization of line management.

[0003] Current fiber optic tray fixing devices are used to fix multiple fiber optic trays. They are usually connected by a snap-fit ​​method. After the snap-fit ​​structure is released, the fiber optic tray can be slid off the fiber optic tray fixing device along the slide rail on the fiber optic tray fixing device. Similarly, fiber optic trays can also be installed.

[0004] The specific locking structure can be achieved by interlocking locking blocks located on the side wall of the fiber optic tray and the slide rail. During disassembly, one of the locking blocks can be moved by a structure on the slide rail, thereby releasing the fixation.

[0005] When fixing fiber optic trays with clips, it is often necessary to consider the stability of the clips to prevent the fiber optic trays from shifting. However, because the clips are quite secure, they are also difficult to disassemble. Summary of the Invention

[0006] In order to facilitate the disassembly of the fiber optic disc fixing device and the fiber optic disc without affecting the connection stability of the clamping structure, this application provides a sliding clamping structure and a fiber optic disc fixing device.

[0007] Firstly, this application provides a sliding snap-fit ​​structure, which adopts the following technical solution: A sliding snap-fit ​​structure includes a sliding bar, and a first side plate and a second side plate for cooperating with the sliding bar; The first side plate is provided with a first latching block, and one side wall of the sliding bar is provided with a second latching block for cooperating with the first latching block. The first side plate is provided with a first operating end for driving the second latching block to move. The second side plate is provided with a positioning block, and the other side wall of the sliding bar is provided with an abutment block for abutting against the positioning block. The sliding bar is provided with a second operating end for driving the positioning block to move. When the abutment block and the positioning block are separated, the first side plate can slide to separate the first locking block and the second locking block.

[0008] By adopting the above technical solution, the first side plate and the second side plate are the two side plates of the fiber optic tray. The first side plate and the second side plate respectively achieve dual positioning of the fiber optic tray between the two sliding strips through the engagement of the first snap-fit ​​block and the second snap-fit ​​block, and the abutment of the positioning block and the abutment block. When disassembly is required, the abutment block and the positioning block are separated first through the second operating end, releasing the first positioning away from the disassembly direction. At this time, the first side plate can slide along the sliding strip (in the opposite direction of the disassembly direction), so that the first snap-fit ​​block and the second snap-fit ​​block can be slightly separated and no longer tightly abutted. It is also convenient to separate the first snap-fit ​​block and the second snap-fit ​​block through the first operating end, releasing the second snap-fit. This step-by-step unlocking structure design not only ensures the stability of the snap-fit ​​during normal use and prevents accidental displacement of the fiber optic tray, but also achieves easy disassembly through the drive of the operating end, solving the contradiction between reliable snap-fit ​​and difficult disassembly in the prior art.

[0009] Optionally, the first side plate includes a first elastic bending section, a first snap-fit ​​block is located on the first elastic bending section, and the first operating end is movable to drive the first elastic bending section to elastically deform. The sliding bar includes a second elastic bending section, the positioning block is located on the second elastic bending section, and the second operating end moves to drive the second elastic bending section to elastically deform.

[0010] By adopting the above technical solution, the first and second elastic bending sections provide elastic preload between the first and second locking blocks, the positioning block, and the abutment block, respectively. When an external force is applied to the operating end, the corresponding elastic bending section undergoes elastic deformation, causing the locking block or positioning block to move, thereby achieving separation. After the external force is removed, the elastic bending section returns to its original shape, allowing the locking block or positioning block to automatically reset, facilitating re-engagement. This elastic structure simplifies the operation steps, eliminates the need for additional springs and other parts, reduces costs, and ensures the reliability of the locking and the smoothness of the operation.

[0011] Optionally, both the first and second latching blocks have a first guide surface at their opposite ends.

[0012] By adopting the above technical solution, the first guide surface allows the first and second locking blocks to smoothly guide each other during initial installation, enabling them to snap into place without precise alignment, thus reducing assembly difficulty and improving installation efficiency. Similarly, the second guide surface also facilitates the rapid insertion of the positioning block and the abutment block during installation.

[0013] Optionally, a third locking block is provided at the end of the first side plate away from the first locking block. The third locking block is connected to the first side plate through a first elastic connecting section. When the first side plate slides along the sliding bar, the third locking block can abut against the second locking block and separate from the second locking block through the elasticity of the first elastic connecting section.

[0014] By adopting the above technical solution, the third locking block is connected to the first side plate through the first elastic connecting section. During the sliding of the first side plate along the sliding strip, the third locking block can contact the second locking block and undergo elastic deformation. Subsequently, it separates from the second locking block by relying on elastic restoring force, thus serving as a reminder and a certain limiting function during disassembly. After the fiber optic disc slides to the predetermined position, it can provide an additional axial locking force, further enhancing the positioning stability of the fiber optic disc in the sliding direction and preventing accidental sliding due to vibration or other reasons.

[0015] Optionally, the positioning block is connected to a sliding strip via a second elastic connecting section, and a second guide surface is provided at the end of the positioning block away from the abutment block.

[0016] By adopting the above technical solution, the positioning block is connected to the second elastic connecting section and the second side plate strip, giving the positioning block a certain floating ability. It can adaptively and tightly fit with the abutment block. When the abutment block is driven to move by the second operating end, the positioning block can also adaptively adjust its position, reducing the obstruction to the movement of the abutment block. The setting of the second guide surface facilitates the positioning block to smoothly pass over and abut against the abutment block during installation, simplifying the installation process.

[0017] Optionally, the sliding strip has grooves on both sides of its opposite sides, and the second locking block and the abutment block are both located in the grooves.

[0018] By adopting the above technical solution, the chute provides guiding and limiting space for the first snap-fit ​​block and the positioning block, ensuring that their movement trajectory on the sliding bar is accurate and stable, and avoiding deviation or disengagement. At the same time, the chute structure also protects the internal snap-fit ​​components, prevents interference from external foreign objects, and keeps the sidewalls of the fiber optic tray and the sliding bar in contact, making the sliding process more stable and the fixing process more secure.

[0019] Secondly, this application provides a fiber optic tray fixing device, which adopts the following technical solution: A fiber optic tray fixing device includes multiple partition plates and sliding strips in a sliding snap-fit ​​structure as described in any of the above. Each partition plate includes a base plate and at least one support plate. Multiple sliding strips are fixed at equal intervals between adjacent partition plates. The partition plates and adjacent sliding strips enclose a fiber optic tray installation space.

[0020] By adopting the above technical solution, multiple partitions and multiple sliding strips together form multiple independent fiber optic tray installation spaces, realizing the orderly arrangement and centralized management of multiple fiber optic trays. The sliding strips, as shared tracks, not only serve as guides for the sliding of the fiber optic trays but also integrate part of the aforementioned sliding snap-fit ​​structure, making the installation and disassembly of each fiber optic tray independently controllable and non-interfering, greatly improving the flexibility of fiber optic deployment and maintenance.

[0021] Optionally, baffles are provided on both sides of the base plate, and a limiting plate is connected between the two baffles. The limiting plate and the sliding strip furthest from the base plate are detachably connected.

[0022] By adopting the above technical solution, the baffle and limiting plate constitute the reinforcing frame of the partition plate, enhancing the overall rigidity and stability of the entire fiber optic tray fixing device. The limiting plate is detachably connected to the sliding strip at the farthest end, which can serve as an installation reference and facilitates the overall disassembly and assembly of the sliding strip module during assembly or maintenance, thus improving the assembly processability.

[0023] Optionally, the support plate is provided with ventilation holes.

[0024] By adopting the above technical solution, the vent design facilitates air circulation, effectively dissipating the heat generated by the fiber optic tray during operation, reducing temperature rise, ensuring the stability of fiber optic transmission performance, and extending equipment lifespan. Furthermore, it reduces the overall weight of the fiber optic tray fixing device.

[0025] Optionally, the sliding bar has a mounting hole, and a locking element is provided in the mounting hole. The sliding bar is connected to a partition plate or a limiting plate through the locking element.

[0026] By adopting the above technical solution, and by opening mounting holes on the sliding strip and using locking components (such as screws), reliable fixation between the sliding strip and the partition plate or limit plate is achieved. It is also easy to disassemble and assemble, and it is convenient to adjust the spacing of the sliding strip or replace the damaged sliding strip, thereby improving the versatility and maintainability of the device.

[0027] In summary, this application includes at least one of the following beneficial effects: 1. Through a step-by-step unlocking structure, the positioning block and the abutment block are separated first, and then the first locking block and the second locking block are separated. This ensures that the fiber optic tray is firmly fixed in normal working condition, and can be easily disassembled through the operating terminal. 2. The automatic reset of the snap-fit ​​parts is achieved by using the elastic bending section, which eliminates the need for additional elastic elements. The structure is simple, the operation is labor-saving, and the elastic deformation life is long, maintaining good snap-fit ​​force even after long-term use. 3. Multiple guide surfaces eliminate the need for precise alignment during installation, reducing assembly difficulty; the flexible connection section and flexible bending section can also compensate for machining tolerances, improving adaptability to fit. 4. Multiple partitions and sliding strips combine to form independent fiber optic tray installation spaces, enabling centralized management and independent disassembly and assembly of multiple trays, optimizing the internal layout of the cabinet, and facilitating future maintenance and expansion. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the fiber optic disk fixing device according to an embodiment of this application; Figure 2 This is a schematic diagram of the overall structure of the first side plate and the second side plate on the fiber optic disk, as shown in the embodiments of this application. Figure 3 This is a schematic diagram of the overall structure of the slider in an embodiment of this application; Figure 4 This is a partial cross-sectional schematic diagram illustrating the sliding snap-fit ​​structure in an embodiment of this application; Figure 5 This is a partial structural schematic diagram of the fiber optic disk fixing device shown in an embodiment of this application; Explanation of reference numerals in the attached drawings: 1. Fiber optic reel fixing device; 11. Sliding bar; 111. Slide groove; 112. Second snap-fit ​​block; 113. Second elastic bending section; 114. Second operating end; 115. Abutment block; 116. Mounting hole; 117. Locking element; 12. Base plate; 13. Support plate; 14. Baffle; 15. Limiting plate; 2. Fiber optic reel; 21. First side plate; 211. First snap-fit ​​block; 212. First elastic bending section; 213. First operating end; 214. First guide surface; 215. Third snap-fit ​​block; 216. First elastic connection section; 217. Second guide surface; 22. Second side plate; 221. Positioning block; 222. Second elastic connection section. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail.

[0030] This application discloses an optical fiber disk fixing device and a sliding snap-fit ​​structure, see reference. Figure 1 and Figure 2 The fiber optic tray fixing device 1 is used to fix the fiber optic tray 2. The sliding snap-fit ​​structure includes multiple sliding strips 11 set on the fiber optic tray fixing device 1, as well as a first side plate 21 and a second side plate 22 at both ends of the fiber optic tray 2. The first side plate 21 and the second side plate 22 can cooperate with the sliding strips 11 to achieve sliding connection and snap-fit ​​fixation, thereby achieving a stable connection of the fiber optic tray 2, as well as installation and disassembly.

[0031] Reference Figure 2 This is a structural diagram of the fiber optic disk 2. Since the overall structure of the fiber optic disk 2, except for the first side plate 21 and the second side plate 22 which are the main improvements in this embodiment, is basically the existing structure, it will not be described in detail. (Reference) Figure 3The diagram shows the structure of the sliding strip 11. Multiple parallel sliding strips 11 are provided on the fiber optic tray fixing device 1, used for simultaneous connection to both the first side plate 21 of one fiber optic tray 2 and the second side plate 22 of another fiber optic tray 2. Sliding strips 11 located near the edge of the fiber optic tray fixing device 1 are used for slidable connection with either the first side plate 21 or the second side plate 22. It should be noted that the sliding snap-fit ​​structure mentioned in this embodiment actually includes a first side plate 21 and a second side plate 22 of one fiber optic tray 2, and two different sliding strips 11.

[0032] Reference Figure 2 and Figure 4 One end of the first side plate 21 is fixed with a first locking block 211, and the other end is connected to a third locking block 215 via a first elastic connecting section 216. That is, the third locking block 215 can move and reset through the elastic force of the first elastic connecting section 216. The end of the first locking block 211 facing the third locking block 215 has an inclined first guide surface 214, and the end of the third locking block 215 facing the first locking block 211 has an inclined second guide surface 217. The first side plate 21 includes a first elastic bending section 212 at one end and a first operating end 213 located at the end of the first elastic bending section 212. The first locking block 211 is located on the first elastic bending section 212. When the operator pushes the first operating end 213, it can adjust the position of the first locking block 211.

[0033] It should be noted that the first guide surface 214 set in each structure in this embodiment only indicates that the tilt direction is the same, not that the structures are completely the same.

[0034] Reference Figure 3 and Figure 4 The sliding bar 11 has grooves 111 on both sides of its side wall. The two side walls are used to abut against the first side plate 21 or the second side plate 22 to realize the sliding connection of the fiber optic disk 2. Part of the structure of the sliding bar 11 is set in the groove 111. The protruding parts of the corresponding first side plate 21 and second side plate 22 can be accommodated in the groove 111, thereby reducing interference and the impact on the sliding of the fiber optic disk 2.

[0035] A second locking block 112 is fixed to the inner wall end of the sliding groove 111 on one side of the sliding bar 11 for cooperating with the first locking block 211. The end of the second locking block 112 away from the first locking block 211 is provided with an inclined first guide surface 214. When the fiber optic tray 2 is installed, the first locking block 211 and the second locking block 112 abut against each other, which can limit the removal of the fiber optic tray 2. When the first operating end 213 contacts the first locking block 211 and the second locking block 112 for fixing, the third locking block 215 can abut against the second locking block 112 to realize the reminder and certain limit functions. The third locking block 215 can be adjusted in position by the second guide surface 217 on the third locking block 215 and the elastic deformation of the first elastic connecting section 216, so that the third locking block 215 can pass through the position of the second locking block 112. When installing the fiber optic tray 2, the first guide surface 214 of the second connector 112 and the first connector 211, as well as the elasticity of the first elastic connecting section 216 and the first elastic bending section 212, enable the first connector 211 and the third connector 215 to pass through the second connector 112.

[0036] Reference Figure 3 The sliding bar 11 includes a second elastic bending section 113 located at the end of the inner wall of the sliding groove 111 on the other side, and a second operating end 114 fixed at the end of the second elastic bending section 113. An abutment block 115 is fixed on the second elastic bending section 113, that is, when the operator pushes the second operating end 114, it can drive the abutment block 115 to adjust its position.

[0037] Reference Figure 2 One end of the second side plate 22 is connected to a positioning block 221 via a second elastic connecting section 222. That is, the positioning block 221 can move and reset through the elastic force of the second elastic connecting section 222. The positioning block 221 is provided with an inclined first guide surface 214.

[0038] Reference Figure 1 and Figure 4When the fiber optic tray 2 is installed, the positioning block 221 and the abutment block 115 abut against each other, and the first locking block 211 and the second locking block 112 abut against each other, thus achieving a stable fixation of the fiber optic tray 2. When it is necessary to remove the fiber optic tray 2, the operator can first push the second operating end 114 to adjust the position of the abutment block 115. Since the positioning block 221 can be adjusted in position by the elastic force of the second elastic connecting section 222, and the abutment block 115 can be moved away from the positioning block 221 by the second elastic bending section 113, the abutment block 115 and the positioning block 221 can be separated. At this time, the tight connection of the first locking block 211 and the second locking block 112 has basically no effect on the separation of the abutment block 115 and the positioning block 221. After the abutment block 115 and the positioning block 221 separate, the fiber optic tray 2 can move a short distance away from the opening of the fiber optic tray fixing device 1, allowing the first locking block 211 and the second locking block 112 to separate. This makes operating the first operating end 213 easier and less likely to jam or damage the first locking block 211 and the second locking block 112, thus facilitating the separation of the fiber optic tray 2 from the fiber optic tray fixing device 1. Similarly, the first guide surface 214 on the positioning block 221 is also used to facilitate the installation and removal of the second side plate 22 and the sliding strip 11; details will not be elaborated further.

[0039] Reference Figure 1 and Figure 5 The fiber optic tray fixing device 1 includes multiple partition plates, each partition plate including a base plate 12 and at least one support plate 13. In this embodiment, two support plates 13 are used as an example. Multiple sliding strips 11 are fixed at equal intervals between adjacent partition plates, and the partition plates and adjacent sliding strips 11 enclose the installation space of the fiber optic tray 2. Baffles 14 are provided on both sides of the base plate 12, and a limiting plate 15 is connected between two baffles 14. The limiting plate 15 and the sliding strip 11 furthest from the base plate 12 are detachably connected.

[0040] The sliding bar 11, without a groove 111, has mounting holes 116 at its two sidewall ends. Locking elements 117, which can be bolts, are threaded through or connected to the mounting holes 116. These locking elements connect the sliding bar 11 to the base plate 12, support plate 13, and limiting plate 15. The support plate 13 also has multiple ventilation holes. These holes facilitate airflow, allowing for timely dissipation of heat generated by the fiber optic tray 2 during operation, reducing temperature rise, ensuring stable fiber optic transmission performance, extending equipment lifespan, and reducing the overall weight of the fiber optic tray fixing device 1.

[0041] The baffle 14 and the limiting plate 15 form a reinforcing frame for the partition plate, enhancing the overall rigidity and stability of the entire fiber optic tray fixing device 1. The limiting plate 15 is detachably connected to the farthest sliding strip 11, serving as both an installation reference and facilitating the overall disassembly and assembly of the sliding strip 11 module during assembly or maintenance, thus improving assembly processability. By opening mounting holes 116 on the sliding strip 11 and using locking parts 117, reliable fixing between the sliding strip 11 and the partition plate or limiting plate 15 is achieved, and disassembly and assembly are convenient. This facilitates adjusting the spacing of the sliding strips 11 or replacing damaged sliding strips 11, improving the versatility and maintainability of the device.

[0042] The implementation principle of the sliding snap-fit ​​structure in this application embodiment is as follows: The first side plate 21 and the second side plate 22 are the two side plates of the fiber optic tray 2. The first side plate 21 and the second side plate 22 respectively achieve dual positioning of the fiber optic tray 2 between the two sliding bars 11 through the engagement of the first snap-fit ​​block 211 and the second snap-fit ​​block 112, and the abutment of the positioning block 221 and the abutment block 115. When disassembly is required, the abutment block 115 and the positioning block 221 are separated by the second operating end 114, releasing the first repositioning away from the disassembly direction. At this time, the first side plate 21 can slide along the sliding bar 11 (in the opposite direction of the disassembly direction), so that the first snap-fit ​​block 211 and the second snap-fit ​​block 112 can be slightly separated and no longer pressed together. It is also convenient to separate the first snap-fit ​​block 211 and the second snap-fit ​​block 112 by the first operating end 213, releasing the second snap-fit. This step-unlocking structure design not only ensures the stability of the snap-fit ​​during normal use and prevents the fiber optic tray 2 from being accidentally displaced, but also achieves easy disassembly through the drive of the operating end.

[0043] The implementation principle of the fiber optic tray fixing device in this application embodiment is as follows: multiple partition plates and multiple sliding strips 11 together form multiple independent installation spaces for fiber optic trays 2, realizing the orderly arrangement and centralized management of multiple fiber optic trays 2. The sliding strips 11, as a shared track, not only undertake the sliding guidance function of the fiber optic trays 2, but also integrate part of the aforementioned sliding snap-fit ​​structure, making the installation and disassembly of each fiber optic tray 2 independently controllable and non-interfering, greatly improving the flexibility of fiber optic deployment and maintenance.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sliding snap-fit ​​structure, characterized in that, Includes a slider (11), and a first side plate (21) and a second side plate (22) for cooperating with the slider (11); The first side plate (21) is provided with a first latching block (211), and the side wall of the sliding bar (11) is provided with a second latching block (112) for cooperating with the first latching block (211). The first side plate (21) is provided with a first operating end (213) for driving the second latching block (112) to move. The second side plate (22) is provided with a positioning block (221), and the other side wall of the sliding bar (11) is provided with an abutment block (115) for abutting against the positioning block (221). The sliding bar (11) is provided with a second operating end (114) for driving the positioning block (221) to move. When the abutment block (115) and the positioning block (221) are separated, the first side plate (21) can slide to separate the first locking block (211) and the second locking block (112).

2. The sliding snap-fit ​​structure according to claim 1, characterized in that, The first side plate (21) includes a first elastic bending section (212), the first snap-fit ​​block (211) is located on the first elastic bending section (212), and the first operating end (213) moves to drive the first elastic bending section (212) to elastically deform. The sliding bar (11) includes a second elastic bending section (113), the abutment block (115) is located on the second elastic bending section (113), and the second operating end (114) moves to drive the second elastic bending section (113) to elastically deform.

3. The sliding snap-fit ​​structure according to claim 2, characterized in that, The first snap-fit ​​block (211) and the second snap-fit ​​block (112) are each provided with a first guide surface (214) at the opposite end.

4. The sliding snap-fit ​​structure according to claim 3, characterized in that, A third snap-fit ​​block (215) is provided at the end of the first side plate (21) away from the first snap-fit ​​block (211). The third snap-fit ​​block (215) is connected to the first side plate (21) through the first elastic connecting section (216). When the first side plate (21) slides along the sliding bar (11), the third snap-fit ​​block (215) can abut against the second snap-fit ​​block (112) and separate from the second snap-fit ​​block (112) through the elasticity of the first elastic connecting section (216).

5. The sliding snap-fit ​​structure according to claim 2, characterized in that, The abutment block (115) is connected to the sliding strip (11) via the second elastic bending section (113), and the positioning block (221) is provided with a second guide surface (217) at the end away from the abutment block (115).

6. The sliding snap-fit ​​structure according to claim 1, characterized in that, The sliding bar (11) has grooves (111) on both sides of its opposite sidewalls, and the second snap-fit ​​block (112) and the positioning block (221) are both located in the grooves (111).

7. A fiber optic disc fixing device, characterized in that, It includes multiple partition plates and the sliding strip (11) in the sliding snap-fit ​​structure as described in any one of claims 1-5. The partition plate includes a base plate (12) and at least one support plate (13). Multiple sliding strips (11) are fixed at equal intervals between adjacent partition plates. The partition plates and adjacent sliding strips (11) enclose the installation space of the optical fiber disk (2).

8. The fiber optic disc fixing device according to claim 7, characterized in that, The base plate (12) is provided with baffles (14) on both sides, and a limiting plate (15) is connected between the two baffles (14). The limiting plate (15) and the sliding strip (11) furthest from the base plate (12) are detachably connected.

9. The fiber optic disc fixing device according to claim 7, characterized in that, The support plate (13) has ventilation holes.

10. The fiber optic disc fixing device according to claim 8, characterized in that, The sliding bar (11) has an installation hole (116) and a locking element (117) is provided in the installation hole (116). The sliding bar (11) is connected to the partition plate or the limiting plate (15) through the locking element (117).