A cover plate protective insert with a flexible clamping structure

Abstract

This application provides a cover plate protective insert with a flexible clamping structure, belonging to the field of inserts. It includes a sliding roller assembly and two sets of connecting columns installed inside the two sets of sliding roller assemblies. A set of right-side gears is fixedly installed on one outer wall of each connecting column, and a set of knobs is fixedly installed on the other outer wall of the gears. A set of wheel disks is fixed to each end of the circumferential outer wall of the connecting column. Connecting rods are fixedly connected to the inner outer walls of the two sets of wheel disks. Two sets of wires are fixed to the outer wall of the center of the connecting rods. This utility model adopts an arc-shaped inner wall insert design, which can conform to the curved edge of the cover plate, increasing the contact area while avoiding local friction damage caused by sharp corner contact, reducing the risk of scratches on the cover plate surface. Combined with two sets of flexible wires clamping the cover plate from front to back, a stable fixation can be formed through appropriate elasticity. This prevents the cover plate from colliding and rubbing against the insert or adjacent cover plates due to shaking during placement and movement, and the flexible material properties avoid squeezing damage caused by rigid clamping.

Description

Technical Field

[0001] This application belongs to the field of insert technology, specifically relating to a cover plate protective insert with a flexible clamping structure. Background Technology

[0002] Cover plate holders are specialized placement devices designed specifically for glass covers, widely used throughout the entire process of production, cleaning, transportation, and storage. Structurally, they typically incorporate specific support and limiting structures. For example, the support frame connected to the base plate features rollers with annular grooves for stable cover plate insertion; the fixed tube between the two side support blocks contains moving and sliding rods, connecting the V-shaped frame and the stop bar to form an anti-slip protection. Some holders also feature an adjustable design, such as adjusting the position of the clamping rods by pulling on elastic components to accommodate covers of different sizes. Their core function focuses on protecting the covers. By incorporating limiting grooves and protective sleeves, they isolate the covers from each other, preventing direct contact and friction, effectively preventing scratches. Optimized contact structures (such as 15° inclined annular grooves) increase the contact area, distribute force points, and reduce the shelf marks easily produced by traditional holders. Additionally, some holders are designed with convenient access structures, such as a lifting rod and handle, allowing covers to be placed at different heights, reducing the risk of friction during handling. In various applications, whether it's placing the entire glass cover into the equipment during cleaning or dealing with shaking and collisions during storage and transportation, it provides reliable protection for the glass cover, ensuring product quality.

[0003] Traditional inserts and cover plates have poor contact methods. For example, some inserts using corrugated toothed racks have bottom contact points that easily come into contact with the chamfered edges of the glass cover plate after the chemical strengthening process. Under the influence of the solution, the glass chamfer and the bottom of the toothed rack frequently rub against each other, causing unevenness or irregularities in the glass chamfer or edge, making repair difficult and resulting in low production yield. Moreover, residual chemicals tend to accumulate at the bottom corners of the corrugated rack, making cleaning inconvenient. Furthermore, traditional inserts lack effective clamping for the cover plate, causing it to wobble and shift during placement, transportation, or operation. Adjacent cover plates are prone to scratches or damage due to collisions and friction. The lack of a clamping structure also makes the cover plate prone to slipping when the insert is tilted or flipped, increasing the risk of damage. In addition, they cannot accommodate cover plates of different thicknesses, and excessive gaps can exacerbate wobble, affecting production yield. This instability is particularly pronounced in processes requiring overall movement, such as cleaning, increasing quality risks and cost losses. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0005] To address this, this application provides a cover plate protective holder with a flexible clamping structure. The arc-shaped inner wall of the holder increases the contact area of ​​the cover plate. Combined with two sets of flexible wires, the cover plate is clamped from front to back, and a stable fixation is achieved through appropriate elasticity. This prevents the cover plate from colliding and rubbing against the holder or adjacent cover plates due to shaking during placement or movement. The arc-shaped structure conforms to the curved edge of the cover plate, and the flexible wires avoid squeezing damage caused by rigid clamping, improving versatility and adaptability. In processes requiring frequent movement, such as transportation and cleaning, this significantly reduces the cover plate loss rate and ensures product yield.

[0006] The first aspect of this application provides a cover plate protective insert with a flexible clamping structure, comprising: The box body has a receiving space; The snap ring assembly is installed on the side of the housing; Two sets of cards and components are symmetrically arranged on the box body, and the two sets of cards and components cooperate to assist in supporting the glass cover plate; Two sets of sliding roller assemblies are symmetrically arranged on the housing, and the distance between the two sets of sliding roller assemblies can be adjusted according to the width of the glass cover. Each sliding roller assembly includes: Multiple sets of wires, with two wires forming a set, each set of wires being used to clamp the glass cover plate, and the spacing between each set of wires being adjustable according to the thickness of the glass cover plate; Two sets of cards and components are symmetrically arranged on the box body, and each card and component is connected to the corresponding sliding component. Each card and component is used to limit the corresponding sliding component.

[0007] Preferably, each of the cards and components includes: Multiple connecting posts, each of which has an arc-shaped groove inside; A gear, the gear being fixedly mounted on one side of the outer surface of one of the connecting posts; A knob, which is fixedly mounted on the outer surface of the gear on the other side; Multiple sets of wheel disks, with two wheel disks forming a group, and each set of wheel disks symmetrically and fixedly installed on both sides of the outer wall of each connecting column; Multiple connecting rods, each of which is fixedly installed between each group of the discs; Multiple sets of movable plates, with two movable plates forming a group, and wires interspersed within the internal movement of each group of movable plates.

[0008] Preferably, each of the cards and components further includes Multiple sets of second springs, with two second springs forming a group, and each second spring being disposed between each of the movable plates and the corresponding wheel; Multiple third springs are provided between each group of the movable plates.

[0009] Preferably, the two sets of connecting columns are respectively inserted and movable on the outer walls of both sides of the box, and each set of gears and knobs is movably installed on one side of the outer wall of the box.

[0010] Preferred options also include: A base plate is fixedly installed at the bottom of the box body, and the two sets of cards and components are symmetrically fixedly installed on the base plate; Multiple side panels are fixedly installed around the top of the box body, and two sets of the cards and components are symmetrically arranged on one of the side panels along with two sets of the sliding roller components.

[0011] Preferably, each of the cards and components includes: The card strip is set on the base plate; Multiple U-shaped grooves are respectively provided on the card strip; Multiple sponge pads are disposed between two adjacent U-shaped grooves. It includes two cards and components, each of which includes a set of card strips; The base plate has two sets of locking strips fixedly installed at equal intervals at the top center. The U-shaped groove is divided into multiple groups, and each group of U-shaped grooves is installed on the top of two groups of clips; The sponge pads are divided into two groups, with each group of sponge pads fixedly installed on top of the two groups of clips. Preferably, each of the said retaining ring assemblies includes: Fixed block; The movable column is inserted and movable inside the fixed block, and one outer wall of the fixed block is fixedly installed to the outer side of a set of side plates; Top block, which is fixedly installed at one end of the front side of the movable column; A fixing plate is fixedly installed at one end of the rear side of the movable column; The first spring is fixedly connected between the outer walls of the fixed block and the top block, and the first spring is movably inserted through the outer wall of one side of the movable column. A limiting plate is fixedly installed at the center of the outer wall of the movable column, and the limiting plate is movably attached to the outer wall of the other side of the fixed block.

[0012] Preferably, each of the top blocks is movably fitted between the teeth on one side of the corresponding gear.

[0013] In some possible embodiments, the cover plate protective insert with a flexible clamping structure provided in this application has all the beneficial effects of the fastener, which will not be described in detail here.

[0014] Compared with the prior art, the technical solution provided in this application includes at least the following technical effects: 1. This utility model adopts an arc-shaped inner wall bracket design, which can conform to the curved edge of the cover plate, increasing the contact area while avoiding local friction damage caused by sharp corner contact, and reducing the risk of scratches on the cover plate surface. With two sets of flexible wires clamping the cover plate at the front and back, a stable fixation can be formed through moderate elasticity. This prevents the cover plate from colliding and rubbing against the bracket or adjacent cover plates due to shaking during placement and movement, and the flexible material properties also avoid squeezing damage caused by rigid clamping. This design balances conformity and cushioning, adapting to cover plates with different curvatures, improving versatility. In processes requiring frequent movement such as transportation and cleaning, it can significantly reduce the cover plate loss rate, ensure product yield, and simplify the operation process, reducing the labor costs of repeated adjustments due to unstable fixation.

[0015] 2. This utility model adopts a two-set of arc-shaped slope design for the locking strips, allowing the cover plate to slide down the slope to the bottom limiting groove after being placed on top, achieving secondary stability and preventing shaking. The sponge pad on the top of the locking strip can buffer contact and prevent the locking strip itself, the U-shaped groove, and the edge of the limiting groove from scratching the cover plate. It uses the slope to guide automatic return and fixation, and the sponge pad provides comprehensive protection, ensuring stability while minimizing the risk of scratches and improving the safety of the cover plate placement. The snap ring assembly uses its internal spring to compress the top block in real time, causing the top block to lock and fix to the gears inside the two sets of sliding roller assemblies inside the insert, maintaining long-term clamping stability. The clamping force of the snap ring assembly can be adjusted in real time.

[0016] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This utility model provides an overall three-dimensional schematic diagram of a cover plate protective insert with a flexible clamping structure; Figure 2 This utility model provides a three-dimensional schematic diagram of the box body in a cover plate protective insert with a flexible clamping structure; Figure 3 This utility model provides a three-dimensional schematic diagram of the card and components in a cover plate protective insert with a flexible clamping structure; Figure 4 This utility model provides a three-dimensional schematic diagram of a retaining spring assembly in a cover plate protective insert with a flexible clamping structure; Figure 5This utility model provides a three-dimensional schematic diagram of the sliding roller assembly in a cover plate protective insert with a flexible clamping structure; Figure 6 This utility model presents a three-dimensional schematic diagram of the sliding roller assembly in a cover plate protective insert with a flexible clamping structure.

[0018] 1. Box body; 101. Base plate; 102. Side plate; 2. Cards and components; 201. Card strip; 202. U-shaped channel; 203. Sponge pad; 3. Snap ring assembly; 301. Fixing block; 302. Movable column; 303. Top block; 304. Fixing plate; 305. First spring; 306. Limiting plate; 4. Sliding roller assembly; 401. Connecting column; 402. Gear; 403. Knob; 404. Wheel; 405. Connecting rod; 406. Wire; 407. Second spring; 408. Movable plate; 409. Third spring. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0021] In some embodiments, please refer to Figures 1 to 12. Figure 6 This application provides a cover plate protective insert with a flexible clamping structure, characterized in that it includes: Box 1, the box has a storage space; The retaining ring assembly 3 is installed on the side of the housing 1; Two sets of cards and components 2 are symmetrically arranged on the box body 1. The two sets of cards and components 2 cooperate to assist in supporting the glass cover. Two sets of sliding roller assemblies 4 are symmetrically arranged on the housing 1, and the distance between the two sets of sliding roller assemblies 4 can be adjusted according to the width of the glass cover. Each sliding roller assembly 4 includes: Multiple sets of wires 406, two wires 406 form a group, each set of wires 406 is used to clamp the glass cover plate, and the spacing between each set of wires 406 can be adjusted according to the thickness of the glass cover plate. Two sets of cards and components 2 are symmetrically arranged on the box body 1, and each card and component 2 is connected to the corresponding sliding component 4. Each card and component 2 is used to limit the corresponding sliding component 4.

[0022] In this embodiment, the outer wall of the connecting post 401 has multiple sets of arc-shaped grooves, and one end of each of the two sets of wires 406 is wrapped around the outer wall at the center of the connecting rod 405.

[0023] In actual operation, the cover plate material can be inserted and placed at the center of the two sets of wires 406, and the arc-shaped groove of the connecting post 401 can slightly hold the cover plate material, and the arc design avoids scratching the cover plate material.

[0024] In some embodiments, such as Figure 6 As shown, it includes two sets of movable plates 408, a second spring 407, the second spring 407 is divided into two groups, one end of each group of second spring 407 is fixedly installed on the outer walls of both sides of the two sets of movable plates 408, a wheel 404, the two ends of the two groups of second spring 407 are fixedly installed on the inner outer walls of the two sets of wheel 404, and a third spring 409, the two ends of the third spring 409 are respectively fixedly installed on the inner outer walls of the two sets of movable plates 408.

[0025] In this embodiment, such as Figure 6 As shown, there are multiple sets of wires 406 inside the two sets of wires 406. One end of the two sets of wires 406 is wrapped around the outer wall at the center of the connecting rod 405 and passes through the two sets of movable plates 408 in an up-down arrangement. The third spring 409 installed on one side of the two sets of movable plates 408 squeezes and separates the two sets of wires 406. The other end of the two sets of wires 406 extends and connects to the other end of the two sets of wires 406 inside another set of sliding roller assembly 4.

[0026] In actual operation, the two sets of wires 406 can be squeezed against the third spring 409 by the rotation of the connecting column 401, so that the two sets of wires 406 come together and stick to each other, fixing and clamping the cover plate material to maintain the overall stability. Since the two sets of wires 406 are soft wires, the clamping damage to the cover plate material is avoided. When not clamped, the third spring 409 can quickly separate the two sets of wires 406, and the elastic force generated during separation can restore the two sets of sliding roller assemblies 4 to their original state.

[0027] In some embodiments, such as Figure 6 As shown, each snap ring assembly 2 also includes Multiple sets of second springs 407, with two second springs 407 forming a group, and each second spring 407 being disposed between each movable plate 408 and the corresponding wheel 404; Multiple third springs 409 are arranged between each set of movable plates 408.

[0028] In this embodiment, such as Figure 6As shown, rotating the knob 403 causes the connecting post 401 to rotate, which in turn drives the connecting rod 405 on one side of the two sets of wheel 404 to rotate to one side, causing the two sets of wires 406 at the center to rotate and wind around. By rotating to one side, the connecting rod 405 on one side of the two sets of wheel 404 on the outer wall of the connecting post 401 is rotated to one side, causing the two sets of wires 406 to wind around the outer wall of the connecting rod 405 as the connecting rod 405 rotates.

[0029] In some embodiments, such as Figure 5 As shown, two sets of connecting columns 401 are respectively inserted and movable on the outer walls of both sides of the box 1, and each set of gears 402 and knobs 403 are movably installed on one side of the outer wall of the box 1.

[0030] In this embodiment, multiple sets of wires 406 inside the two sets of sliding roller assemblies 4 are connected in series, so that multiple sets of cover plate materials can be placed. By rotating the sliding roller assembly 4, multiple sets of cover plate materials can be clamped and stabilized, thus fulfilling the need to efficiently improve productivity.

[0031] In some embodiments, it also includes: The base plate 101 is fixedly installed at the bottom of the box body 1, and two sets of cards and components 2 are symmetrically fixedly installed on the base plate 101. Multiple side panels 102 are fixedly installed around the top of the box body 1, and two sets of clips and components 2 and two sets of sliding roller components 4 are symmetrically arranged on one side panel 101.

[0032] In this embodiment, multiple sets of cover plate materials are placed on top of two sets of cards and components 2 by means of cards and components 2, so as to avoid multiple sets of cover plate materials being suspended in the air and further maintain stability.

[0033] In some embodiments, each card and component 2 includes: Card strip 201 is installed on base plate 101; Multiple U-shaped grooves 202 are respectively provided on the card strip 201; Multiple sponge pads 203 are disposed between two adjacent U-shaped grooves 202. It includes two cards and component 2, each of which includes a set of card strips 201; The base plate 101 has two sets of clips 201 fixedly installed at equal intervals at the top center; U-shaped groove 202, the U-shaped groove 202 is divided into multiple groups, and each group of U-shaped groove 202 is installed on the top of two groups of card strips 201; The sponge pad 203 is divided into two groups, and each group of sponge pads 203 is fixedly installed on the top of the two groups of clips 201.

[0034] In this embodiment, multiple U-shaped grooves 202 are formed on the top of the two sets of clips 201, and sponge pads 203 are fitted onto the top of the two sets of clips 201. The design of the U-shaped grooves 202 allows multiple sets of cover plate materials to slide into the bottom limiting groove of the U-shaped grooves 202, thereby achieving the requirement of further stabilizing the bottom of the multiple sets of cover plate materials. The added sponge pads 203 can buffer the multiple sets of cover plate materials when they are placed, and cover the corners of the bottom limiting groove of the U-shaped grooves 202 to avoid scratching the multiple sets of cover plate materials.

[0035] In some embodiments, each snap ring assembly 3 includes: Fixing block 301; The movable column 302 is inserted and movable inside the fixed block 301. One outer wall of the fixed block 301 is fixedly installed to the outer side of a set of side plates 102. Top block 303 is fixedly installed at one end of the front side of movable column 302; Fixed plate 304 is fixedly installed at one end of the rear side of movable column 302; The first spring 305 is fixedly connected between the outer walls of the fixed block 301 and the top block 303, and the first spring 305 is movably inserted through the outer wall of one side of the movable column 302. The limiting plate 306 is fixedly installed at the center of the outer wall of the movable column 302, and the limiting plate 306 is movably attached to the other side of the outer wall of the fixed block 301.

[0036] In this embodiment, two sets of retaining ring assemblies 3 limit and fix the two sets of sliding roller assemblies 4, so that the two sets of sliding roller assemblies 4 do not spring back when rotating and clamping, thus achieving a long-term fixing effect.

[0037] In some embodiments, each top block 303 is movably engaged between the teeth on one side of the corresponding gear 402.

[0038] In this embodiment, the movable column 302 inserted inside the fixed block 301 causes the fixed plate 304 at one end of the movable column 302 to be pushed and pulled, driving the top block 303 on the other side of the movable column 302 to move back and forth, thus locking and fixing each set of gears 402 inside the two sets of sliding roller assemblies 4. The first spring 305, which is connected to the fixed block 301 through the top block 303, can restore the snap ring assembly 3 to its original state when the snap ring assembly 3 is pushed and pulled, locking and fixing the sliding roller assembly 4 in real time. Alternatively, the snap ring assembly 3 can be quickly restored to its original state after being pulled out and placed. By pulling out the snap ring assembly 3 and rotating the sliding roller assembly 4, when the required clamping force is reached, the snap ring assembly 3 is released and returns to its original state, so that the top block 303 inside the snap ring assembly 3 locks and fixes the gears 402, allowing the sliding roller assembly 4 to perform long-term clamping operations on multiple sets of cover plate materials.

[0039] In this application, it should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] 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 number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. The term "multiple" refers to two or more, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In this application, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cover plate protective insert with a flexible clamping structure, characterized in that, include: Box (1), the box having a receiving space; The snap ring assembly (3) is installed on the side of the housing (1); Two sets of cards and components (2) are symmetrically arranged on the box body (1), and the two sets of cards and components (2) cooperate to assist in supporting the glass cover plate; Two sets of sliding roller assemblies (4) are symmetrically arranged on the housing (1), and the distance between the two sets of sliding roller assemblies (4) can be adjusted according to the width of the glass cover. Each sliding roller assembly (4) includes: Multiple sets of wires (406), two wires (406) form a set, each set of wires (406) is used to clamp the glass cover plate, and the spacing between each set of wires (406) can be adjusted according to the thickness of the glass cover plate; Two sets of cards and components (2) are symmetrically arranged on the box body (1), and each card and component (2) is connected to the corresponding sliding component (4). Each card and component (2) is used to limit the corresponding sliding component (4).

2. The cover plate protective bracket with a flexible clamping structure according to claim 1, characterized in that, Each of the cards and components (2) includes: Multiple connecting posts (401), each of the connecting posts (401) having an arc-shaped groove inside; Gear (402), said gear (402) is fixedly mounted on one side of the outer surface of said connecting post (401); A knob (403) is fixedly mounted on the outer surface of the gear (402) on the other side; Multiple sets of wheel disks (404), two wheel disks (404) form a group, and each set of wheel disks (404) is symmetrically fixedly installed on both sides of the outer wall of each connecting column (401); Multiple connecting rods (405), each connecting rod (405) is fixedly installed between each set of said discs (404); Multiple sets of movable plates (408), two movable plates (408) form a group, and wires (406) are inserted into the internal movement of each set of movable plates (408).

3. The cover plate protective insert with a flexible clamping structure according to claim 2, characterized in that: Each of the cards and components (2) also includes Multiple sets of second springs (407), two second springs (407) form a group, and each second spring (407) is disposed between each of the movable plates (408) and the corresponding wheel (404); Multiple third springs (409) are provided between each set of the movable plates (408).

4. A cover plate protective insert with a flexible clamping structure according to claim 2, characterized in that: The two sets of connecting columns (401) are respectively inserted and movable on the outer walls of the two sides of the box (1), and each set of gears (402) and knobs (403) are movably installed on the outer wall of one side of the box (1).

5. A cover plate protective insert with a flexible clamping structure according to claim 1, characterized in that, Also includes: The base plate (101) is fixedly installed on the bottom of the box body (1), and the two sets of the cards and components (2) are symmetrically fixedly installed on the base plate (101); Multiple side plates (102) are fixedly installed around the top of the box body (1), and two sets of the cards and components (2) and two sets of the sliding roller components (4) are symmetrically arranged on one of the side plates (102).

6. A cover plate protective insert with a flexible clamping structure according to claim 5, characterized in that, Each of the cards and components (2) includes: A card strip (201) is provided on the base plate (101); Multiple U-shaped grooves (202) are respectively provided on the card strip (201); Multiple sponge pads (203) are disposed between two adjacent U-shaped grooves (202). It includes two cards and components (2), each of which includes a set of card strips (201); The base plate (101) has two sets of clips (201) fixedly installed at equal intervals at the top center. The U-shaped groove (202) is divided into multiple groups, and each group of U-shaped grooves (202) is installed on the top of two groups of clips (201); The sponge pad (203) is divided into two groups, and each group of sponge pads (203) is fixedly installed on the top of the two groups of clips (201).

7. A cover plate protective insert with a flexible clamping structure according to claim 1, characterized in that, Each of the said snap ring assemblies (3) includes: Fixing block (301); The movable column (302) is inserted and moves inside the fixed block (301), and one side of the outer wall of the fixed block (301) is fixedly installed to the outer side of a set of side plates (102); Top block (303), which is fixedly installed at one end of the front side of the movable column (302); A fixing plate (304) is fixedly installed at one end of the rear side of the movable column (302); The first spring (305) is fixedly connected between the outer wall of the fixed block (301) and the top block (303), and the first spring (305) is movably inserted through the outer wall of one side of the movable column (302); The limiting plate (306) is fixedly installed at the center of the outer wall of the movable column (302), and the limiting plate (306) is movably attached to the other side of the outer wall of the fixed block (301).

8. A cover plate protective insert with a flexible clamping structure according to claim 7, characterized in that: Each of the top blocks (303) is movably fitted between the teeth on one side of the corresponding gear (402).

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