EPE pearl wool with environment-friendly and sterilizing functions

Abstract

The EPE pearl wool with the environment-friendly sterilization function comprises a pearl wool body, the outer side of the pearl wool body is sleeved with a protection sleeve, a sealing cover is installed on the top of the protection sleeve, and protection corners are arranged at the four corners of the protection sleeve and the four corners of the sealing cover in a sleeved mode. The pearl wool body is sequentially composed of a first buffer layer, a first antibacterial pearl wool cushion, a buffer pearl wool cushion, a second antibacterial pearl wool cushion and a second buffer layer from top to bottom. Positioning grooves are fixedly connected to the four corners of the sealing cover, positioning blocks are fixedly connected to the four corners of the top of the protective sleeve, and the multiple sets of positioning blocks are matched with the positioning grooves. The utility model has the beneficial effects that through the design of a multi-layer composite structure, three core functions of efficient buffer protection, long-acting antibiosis and moistureproof, and modularized convenient disassembly and assembly are realized, and meanwhile, by adopting a bio-based material and a degradable drying agent, the environment-friendly property and the structural stability are both considered.

Description

Technical Field

[0001] This utility model relates to the field of EPE pearl cotton technology, specifically to an EPE pearl cotton with environmentally friendly sterilization function. Background Technology

[0002] Polyethylene foam, also known as EPE pearl cotton, is a non-crosslinked closed-cell structure and a new type of environmentally friendly packaging material. It is composed of countless independent air bubbles generated by the physical foaming of low-density polyethylene resin, which overcomes the shortcomings of ordinary foam such as fragility, deformation and poor resilience. It is widely used in the packaging of products such as car pearl cotton pads, pillows and so on, and can also be made into products such as mattresses and pearl cotton pads.

[0003] In the prior art, Chinese Patent Publication No. CN218558217U discloses an EPE pearl cotton with environmentally friendly sterilization function, including a pearl cotton pad, a protective sleeve fixedly installed on the outside of the pearl cotton pad, a pearl cotton base layer fixedly installed inside the pearl cotton pad, and a protective mechanism fixedly installed inside the pearl cotton pad. The protective mechanism includes a waterproof layer, a tough layer, a reinforcing plate, a first antibacterial layer, a second antibacterial layer, and a third antibacterial layer. Wrapping the pearl cotton pad with a protective sleeve can better prevent mold and bacteria. Montmorillonite desiccant is placed inside the waterproof layer to prevent water erosion. Then, through the combined action of the first, second, and third antibacterial layers, a better antibacterial effect is achieved. Finally, when the montmorillonite desiccant has been used for a long time, the sealing block can be opened to replace the montmorillonite desiccant to achieve a continuous waterproof and moisture-proof effect, further reducing the growth of bacteria. However, the sealing block on this EPE pearl cotton protective cover is fixed with Velcro. Velcro is a common reusable fixing device, but its structure consists of hook and loop sides. When fixed, there are tiny gaps, which makes it impossible to guarantee the sealing performance after the sealing block is fixed. This will cause the internal montmorillonite desiccant to fail prematurely, reduce the waterproof layer function, reduce the overall moisture-proof performance, and make it easy for bacteria to grow. At the same time, the opening of the sealing block is small and cannot provide enough operating space, which makes it easy to spill or inefficient when replacing montmorillonite desiccant, thus reducing the convenience of use. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model designs an EPE pearl cotton with environmentally friendly sterilization function, which can solve the problems of insufficient sealing of existing EPE pearl cotton, easy water ingress reducing moisture resistance, and small opening making it difficult to replace montmorillonite desiccant, thus reducing the convenience of use.

[0005] This utility model provides the following technical solution: an EPE pearl cotton with environmentally friendly sterilization function, comprising: a pearl cotton body, a protective sleeve covering the outer side of the pearl cotton body, a sealing cap installed on the top of the protective sleeve, and protective corners covering the four corners of the protective sleeve and the sealing cap.

[0006] The main body of the pearl cotton consists of, from top to bottom, a first buffer layer, a first antibacterial pearl cotton pad, a buffer pearl cotton pad, a second antibacterial pearl cotton pad, and a second buffer layer.

[0007] The sealing cover has positioning grooves fixedly connected to its four corners, and positioning blocks are fixedly connected to the four corners of the top of the protective cover. Multiple sets of positioning blocks fit into the positioning grooves. The sealing cover has locking blocks fixedly connected to the four corners of its bottom. Multiple sets of locking blocks engage with the protective cover through locking grooves. Rubber sealing strips are embedded around the top of the protective cover.

[0008] As a preferred embodiment of this utility model, multiple sets of bubble buffer strips are fixedly connected to the opposite sides of the first buffer layer and the second buffer layer, and positioning posts are fixedly connected to the corners of the opposite sides of the first buffer layer and the second buffer layer. Positioning holes are opened inside the first antibacterial pearl cotton pad and the second antibacterial pearl cotton pad at positions corresponding to the positioning posts.

[0009] As a preferred embodiment of this utility model, both the first and second antibacterial pearl cotton pads are covered with a waterproof layer, which is a PET waterproof bag. Both the first and second antibacterial pearl cotton pads have multiple sets of moisture-proof chambers inside, and each set of moisture-proof chambers is filled with montmorillonite desiccant. Multiple sets of moisture-absorbing holes are provided in the first buffer layer, the second buffer layer, the first antibacterial pearl cotton pad, the second antibacterial pearl cotton pad, and the waterproof layer at positions corresponding to the moisture-proof chambers.

[0010] As a preferred embodiment of this utility model, both the first antibacterial pearl cotton pad and the second antibacterial pearl cotton pad are provided with a first antibacterial layer and a second antibacterial layer inside the waterproof layer. The first antibacterial layer is a mugwort fiber layer, and the second antibacterial layer is a zinc ion antibacterial layer.

[0011] As a preferred embodiment of this utility model, the cushioning pearl cotton pad is designed with a wave-shaped structure.

[0012] As a preferred embodiment of this utility model, both the protective sleeve and the sealing cap are made of acrylic fiber, and the top of the sealing cap is fixedly connected with multiple sets of reinforcing ribs.

[0013] As a preferred embodiment of this utility model, each of the multiple sets of protective corners has a connecting post fixedly connected to its bottom end. Each of the multiple sets of protective corners has a connecting hole at a position corresponding to the multiple sets of connecting posts inside the protective sleeve. Each of the multiple sets of protective corners has a fixing cover installed at its top. Each of the multiple sets of fixing covers has a multiple set of locking posts fixedly connected to its bottom. Each of the multiple sets of locking posts is engaged with the protective corner through locking holes.

[0014] The beneficial effects of this utility model are:

[0015] 1. In this utility model, through the design of the pearl cotton main body, the first buffer layer and the second buffer layer provide basic buffering functions, which can effectively absorb external impact force. The bubble buffer strip further enhances the overall buffering performance and provides additional protection, thereby improving the protective effect of EPE pearl cotton. The positioning post and positioning hole are inserted to enable precise alignment and stable connection between the layers, preventing displacement or misalignment during use, thereby improving the stability and durability of the overall structure. At the same time, it is convenient to disassemble and maintain each layer after opening the sealing cover.

[0016] A waterproof layer made of PET waterproof bag wraps around the outside of the antibacterial pearl cotton pad, forming a physical water barrier to prevent external liquid penetration. The moisture-proof cavity contains montmorillonite desiccant that continuously absorbs permeated moisture. Moisture-absorbing pores penetrate each layer, establishing a moisture channeling path so that the montmorillonite desiccant covers the entire pearl cotton body, effectively preventing bacterial growth. The EPE pearl cotton used is bio-based, and the montmorillonite desiccant can be used as a soil conditioner after disposal, greatly improving the environmentally friendly sterilization effect of the EPE pearl cotton. The first and second antibacterial pearl cotton pads are connected by internal mugwort... The fiber layer and zinc ion antibacterial layer form a double antibacterial barrier inside the waterproof layer. The mugwort fiber provides natural antibacterial properties, while the zinc ion antibacterial layer enhances broad-spectrum antibacterial capabilities. The two work synergistically to effectively inhibit the growth of microorganisms. At the same time, the waterproof layer ensures the stability and durability of the internal antibacterial components. The overall structure takes into account both protective function and material safety. The cushioning pearl cotton pad has a wave-shaped structure design. Through its continuous undulating curved shape, it disperses stress and absorbs energy when subjected to external impact, significantly improving cushioning performance. At the same time, the material usage is optimized to achieve lightweighting, providing the product with efficient pressure resistance protection.

[0017] 2. In this utility model, through the coordinated design of the protective sleeve, sealing cover, and protective corner, the sealing cover and the protective sleeve not only achieve a stable and sealed connection, but also provide sufficient space for maintenance operations by opening the sealing cover, thereby improving the ease of operation. The protective corner and the fixing cover are both made of plastic material. The plug-in design of the connecting post and the connecting hole enables the precise positioning and installation of the protective corner and the protective sleeve. The fixing cover forms a secondary fixation through the elastic snap-fit ​​of the snap-fit ​​post and the snap-fit ​​hole. The plastic protective corner and the fixing cover form a rigid support through snap-fit, which facilitates disassembly and assembly while effectively dispersing external impact forces and reducing the risk of deformation at the corners of the EPE pearl cotton. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the protective sleeve and sealing cap structure of this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a schematic diagram of the main structure of the pearl cotton of this utility model;

[0022] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0023] Figure 6 This is a schematic diagram of the internal structure of the first antibacterial pearl cotton pad of this utility model;

[0024] Figure 7 This is a schematic diagram of the protective corner structure of this utility model;

[0025] In the diagram: 1. Pearl cotton main body; 101. First buffer layer; 102. First antibacterial pearl cotton pad; 103. Buffer pearl cotton pad; 104. Second antibacterial pearl cotton pad; 105. Second buffer layer; 106. Bubble buffer strip; 107. Positioning post; 108. Positioning hole; 109. Waterproof layer; 110. Moisture-proof cavity; 111. Moisture-absorbing hole; 112. First antibacterial layer; 113. Second antibacterial layer; 2. Protective sleeve; 3. Sealing cap; 301. Positioning groove; 302. Positioning block; 303. Locking block; 304. Locking groove; 305. Rubber sealing strip; 306. Reinforcing rib; 4. Protective corner; 401. Connecting post; 402. Connecting hole; 403. Fixing cap; 404. Locking post; 405. Locking hole. Detailed Implementation

[0026] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Example:

[0028] like Figures 1 to 7 As shown, an EPE pearl cotton with environmentally friendly sterilization function includes: a pearl cotton body 1, a protective sleeve 2 covering the outer side of the pearl cotton body 1, a sealing cap 3 installed on the top of the protective sleeve 2, and protective corners 4 covering the four corners of the protective sleeve 2 and the sealing cap 3.

[0029] In this embodiment, the pearl cotton body 1 is composed of, from top to bottom, a first buffer layer 101, a first antibacterial pearl cotton pad 102, a buffer pearl cotton pad 103, a second antibacterial pearl cotton pad 104, and a second buffer layer 105. Multiple sets of bubble buffer strips 106 are fixedly connected to the opposite sides of the first buffer layer 101 and the second buffer layer 105. Positioning posts 107 are fixedly connected to the corners of the opposite sides of the first buffer layer 101 and the second buffer layer 105. Positions inside the first antibacterial pearl cotton pad 102 and the second antibacterial pearl cotton pad 104 corresponding to the positioning posts 107 are also provided. Positioning holes 108 are provided at each location. The first buffer layer 101 and the second buffer layer 105 provide basic buffering functions and can effectively absorb external impact forces. The bubble buffer strip 106 further enhances the overall buffering performance and provides additional protection, thereby improving the protective effect of EPE pearl cotton. The positioning post 107 is inserted into the positioning hole 108, so that the layers can be precisely aligned and firmly connected, preventing displacement or misalignment during use, thereby improving the stability and durability of the overall structure, and at the same time facilitating the disassembly and maintenance of each layer after opening the sealing cover 3.

[0030] In this embodiment, positioning grooves 301 are fixedly connected to the four corners of the sealing cover 3, and positioning blocks 302 are fixedly connected to the four corners of the top of the protective sleeve 2. Multiple sets of positioning blocks 302 fit into the positioning grooves 301. Locking blocks 303 are fixedly connected to the four corners of the bottom of the sealing cover 3. Multiple sets of locking blocks 303 engage with the protective sleeve 2 through locking grooves 304. Rubber sealing strips 305 are embedded around the top of the protective sleeve 2. Both the protective sleeve 2 and the sealing cover 3 are made of acrylic fiber. Multiple sets of reinforcing ribs 306 are fixedly connected to the top of the sealing cover 3. When installing and fixing the sealing cover 3 and the protective sleeve 2, the sealing cover 3 is aligned with the top of the protective sleeve 2 to achieve the desired positioning. Block 302 is inserted into the corresponding positioning groove 301 to achieve initial positioning and fixation. Block 303 is aligned with groove 304 and pushed in to achieve the snap-fit ​​fixation between the sealing cover 3 and the protective sleeve 2. Rubber sealing strips 305 are embedded around the top of the protective sleeve 2 to ensure the sealing between the sealing cover 3 and the protective sleeve 2. This not only achieves a stable and sealed connection between the sealing cover 3 and the protective sleeve 2, but also provides sufficient space for maintenance operations when the sealing cover 3 is opened, thereby improving the ease of operation. At the same time, both the protective sleeve 2 and the sealing cover 3 are made of acrylic fiber, which has anti-mildew and antibacterial properties. Multiple sets of reinforcing ribs 306 enhance the structural strength and stability of the sealing cover 3.

[0031] In this embodiment, both the first antibacterial pearl cotton pad 102 and the second antibacterial pearl cotton pad 104 are covered with a waterproof layer 109, which is a PET waterproof bag. Both the first antibacterial pearl cotton pad 102 and the second antibacterial pearl cotton pad 104 have multiple sets of moisture-proof cavities 110 inside, and each set of moisture-proof cavities 110 is filled with montmorillonite desiccant. The first buffer layer 101, the second buffer layer 105, the first antibacterial pearl cotton pad 102, the second antibacterial pearl cotton pad 104, and the waterproof layer 109 all have moisture-proof cavities 110 at corresponding positions inside them. Multiple sets of moisture-absorbing holes 111 and a waterproof layer 109 made of PET waterproof bag wrap around the outside of the antibacterial pearl cotton pad, forming a physical water barrier to prevent external liquid penetration. The moisture-proof cavity 110 contains montmorillonite desiccant to continuously absorb permeated moisture. The moisture-absorbing holes 111 penetrate through each layer to establish a moisture guide path, so that the effective range of montmorillonite desiccant covers the entire pearl cotton body 1, effectively preventing the growth of bacteria. The EPE pearl cotton is made of bio-based EPE pearl cotton, and the montmorillonite desiccant can be used as a soil conditioner after disposal, thus greatly improving the environmentally friendly sterilization effect of EPE pearl cotton.

[0032] In this embodiment, both the first antibacterial pearl cotton pad 102 and the second antibacterial pearl cotton pad 104 are provided with a first antibacterial layer 112 and a second antibacterial layer 113 inside the waterproof layer 109. The first antibacterial layer 112 is a mugwort fiber layer, and the second antibacterial layer 113 is a zinc ion antibacterial layer. The first antibacterial pearl cotton pad 102 and the second antibacterial pearl cotton pad 104 form a double antibacterial barrier inside the waterproof layer 109 through the built-in mugwort fiber layer and zinc ion antibacterial layer. The mugwort fiber provides a natural antibacterial effect, while the zinc ion antibacterial layer enhances the broad-spectrum antibacterial ability. The two work together to effectively inhibit the growth of microorganisms. At the same time, the waterproof layer 109 ensures the stability and durability of the internal antibacterial components. The overall structure takes into account both protective function and material safety.

[0033] In this embodiment, the cushioning pearl cotton pad 103 has a wave-shaped structure design. Through its continuous undulating curved surface, it disperses stress and absorbs energy when subjected to external impact, significantly improving cushioning performance. At the same time, it optimizes the amount of material used to achieve lightweighting, providing the product with efficient pressure resistance protection.

[0034] In this embodiment, each of the multiple sets of protective corners 4 has a connecting post 401 fixedly connected to its bottom. The protective sleeve 2 has connecting holes 402 at positions corresponding to the connecting posts 401. Each of the multiple sets of protective corners 4 has a fixing cover 403 installed at its top. Each of the fixing covers 403 has multiple locking posts 404 fixedly connected to its bottom. The locking posts 404 are engaged with the protective corners 4 through locking holes 405. Both the protective corners 4 and the fixing covers 403 are made of plastic. The insertion design of the connecting posts 401 and connecting holes 402 enables precise positioning and installation of the protective corners 4 and the protective sleeve 2. The fixing covers 403 are elastically engaged with the locking posts 404 and locking holes 405, forming a secondary fixation. The plastic protective corners 4 and fixing covers 403 are engaged to form a rigid support, facilitating disassembly and assembly while effectively dispersing external impact forces and reducing the risk of deformation at the corners of the EPE pearl cotton.

[0035] Implementation Scheme: Positioning holes 108 are provided inside the first antibacterial pearl cotton pad 102 and the second antibacterial pearl cotton pad 104 at positions corresponding to the positioning posts 107. The first buffer layer 101 and the second buffer layer 105 provide basic buffering functions, effectively absorbing external impact forces. The bubble buffer strip 106 further enhances the overall buffering performance, providing additional protection and thus improving the protective effect of the EPE pearl cotton. The positioning posts 107 are inserted into the positioning holes 108, ensuring precise alignment and stable connection between the layers, preventing displacement or misalignment during use, thereby improving the stability and durability of the overall structure. This also facilitates disassembly and maintenance of each layer after opening the sealing cover 3. Installation is performed between the sealing cover 3 and the protective sleeve 2. During fixing, align the sealing cap 3 with the top of the protective sleeve 2, insert the positioning block 302 into the corresponding positioning groove 301 to achieve initial positioning and fixing. Align the locking block 303 with the locking groove 304 and push it in to achieve the locking and fixing of the sealing cap 3 and the protective sleeve 2. Rubber sealing strips 305 are embedded around the top of the protective sleeve 2 to ensure the sealing between the sealing cap 3 and the protective sleeve 2. This not only achieves a stable and sealed connection between the sealing cap 3 and the protective sleeve 2, but also provides sufficient space for maintenance operations, thereby improving operational convenience. At the same time, both the protective sleeve 2 and the sealing cap 3 are made of acrylic fiber, which has anti-mildew and antibacterial properties. Multiple sets of reinforcing ribs 306 enhance the structural strength and stability of the sealing cap 3. PET protective... A waterproof layer 109, made of water-filled bags, wraps around the outside of the antibacterial pearl cotton pad, forming a physical water barrier to prevent external liquid penetration. A moisture-proof cavity 110 contains montmorillonite desiccant that continuously absorbs permeated moisture. Moisture-absorbing holes 111 penetrate each layer, establishing a moisture flow path so that the montmorillonite desiccant covers the entire pearl cotton body 1, effectively preventing bacterial growth. The EPE pearl cotton used is bio-based, and the montmorillonite desiccant can be used as a soil conditioner after disposal, greatly improving the environmentally friendly sterilization effect of the EPE pearl cotton. The first antibacterial pearl cotton pad 102 and the second antibacterial pearl cotton pad 104 form a double antibacterial barrier inside the waterproof layer 109 through an internal layer of mugwort fiber and a zinc ion antibacterial layer. The mugwort fiber provides natural antibacterial properties, and the zinc... The ion antibacterial layer enhances broad-spectrum antibacterial capabilities, and the two work synergistically to effectively inhibit microbial growth. Meanwhile, the waterproof layer 109 ensures the stability and durability of the internal antibacterial components. The overall structure balances protective function with material safety. The cushioning pearl cotton pad 103 features a wave-like structure design; its continuously undulating curved surface disperses stress and absorbs energy when subjected to external impact, significantly improving cushioning performance. Simultaneously, optimized material usage achieves lightweighting, providing the product with highly efficient pressure-resistant protection. Both the protective corner 4 and the fixing cover 403 are made of plastic. The insertion design of the connecting post 401 and the connecting hole 402 enables precise positioning and installation of the protective corner 4 and the protective sleeve 2. The fixing cover 403 is elastically engaged through the locking post 404 and the locking hole 405, forming a secondary fixation.The plastic protective corner 4 and the fixing cover 403 are connected by a snap-fit ​​mechanism to form a rigid support, facilitating disassembly and assembly while effectively dispersing external impact forces and reducing the risk of deformation at the corners of the EPE pearl cotton. The entire operation process is simple and convenient. This utility model, through its multi-layer composite structure design, achieves three core functions: high-efficiency buffering protection, long-lasting antibacterial and moisture-proof properties, and modular and convenient disassembly and assembly. Furthermore, the use of bio-based materials and biodegradable desiccants ensures both environmental friendliness and structural stability.

[0036] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0037] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An EPE pearl cotton with environmentally friendly antibacterial function, characterized in that, include: The main body is made of pearl cotton, and a protective sleeve is fitted on the outside of the main body of pearl cotton. A sealing cap is installed on the top of the protective sleeve, and protective corners are fitted at the four corners of the protective sleeve and the sealing cap. The main body of the pearl cotton consists of, from top to bottom, a first buffer layer, a first antibacterial pearl cotton pad, a buffer pearl cotton pad, a second antibacterial pearl cotton pad, and a second buffer layer. The sealing cover has positioning grooves fixedly connected to its four corners, and positioning blocks are fixedly connected to the four corners of the top of the protective cover. Multiple sets of positioning blocks fit into the positioning grooves. The sealing cover has locking blocks fixedly connected to the four corners of its bottom. Multiple sets of locking blocks engage with the protective cover through locking grooves. Rubber sealing strips are embedded around the top of the protective cover.

2. The EPE pearl cotton with environmentally friendly sterilization function according to claim 1, characterized in that, Multiple sets of bubble buffer strips are fixedly connected to the opposite side of the first and second buffer layers. Positioning posts are fixedly connected to the corners of the opposite sides of the first and second buffer layers. Positioning holes are opened inside the first and second antibacterial pearl cotton pads at positions corresponding to the positioning posts.

3. The EPE pearl cotton with environmentally friendly sterilization function according to claim 1, characterized in that, Both the first and second antibacterial pearl cotton pads are covered with a waterproof layer, which is a PET waterproof bag. Both the first and second antibacterial pearl cotton pads have multiple moisture-proof chambers inside, and each moisture-proof chamber is filled with montmorillonite desiccant. Multiple moisture-absorbing holes are provided in the first buffer layer, the second buffer layer, the first antibacterial pearl cotton pad, the second antibacterial pearl cotton pad, and the waterproof layer at positions corresponding to the moisture-proof chambers.

4. The EPE pearl cotton with environmentally friendly sterilization function according to claim 3, characterized in that, Both the first and second antibacterial pearl cotton pads have a first antibacterial layer and a second antibacterial layer inside the waterproof layer. The first antibacterial layer is a layer of mugwort fiber, and the second antibacterial layer is a zinc ion antibacterial layer.

5. The EPE pearl cotton with environmentally friendly sterilization function according to claim 1, characterized in that, The cushioning pearl cotton pad has a wave-shaped structure design.

6. The EPE pearl cotton with environmentally friendly sterilization function according to claim 1, characterized in that, Both the protective sleeve and the sealing cap are made of acrylic fiber, and the top of the sealing cap is fixedly connected with multiple sets of reinforcing ribs.

7. The EPE pearl cotton with environmentally friendly antibacterial function according to claim 1, characterized in that, Each set of protective corners has a connecting post fixedly connected to its bottom. The protective sleeve has connecting holes at positions corresponding to the connecting posts. Each set of protective corners has a fixing cover installed on its top. Each set of fixing covers has a locking post fixedly connected to its bottom. Each set of locking posts is engaged with the protective corner through locking holes.

Images