Edge sealing device facilitating quilt cover replacement of quilt core
By combining a limiting block, a limiting ring, and a magnetic block, the problem of inconvenience in replacing traditional duvet cover zippers after they are damaged is solved, enabling convenient replacement and installation of the duvet insert and reducing labor intensity.
Patent Information
- Application Number
- CN202423208544.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-25
AI Technical Summary
The traditional zipper design, where the zipper is integrated with the cover, makes it difficult to repair or replace if the zipper is damaged. It also makes the zipper prone to shifting during installation, increasing the workload.
An edge-sealing device for easy replacement of quilt inserts was designed. It adopts a combination structure of multiple limiting blocks, limiting rings, springs and magnetic blocks. The zipper can be quickly disassembled and installed through the cooperation of the limiting blocks and limiting rings. The quilt insert is fixed by setting baffles on both sides of the quilt body to form a sliding groove structure.
It enables quick disassembly and installation of zippers, facilitating the replacement of comforters, reducing labor intensity, and ensuring that the comforter does not shift during installation.
Smart Images

Figure CN223787430U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of duvet cover technology, specifically to a sealing device that facilitates the replacement of duvet covers with duvet inserts. Background Technology
[0002] A duvet cover, commonly known as a "comfort cover," is placed over a quilt to prevent it from getting dirty and to facilitate washing. It belongs to the category of bedding. Currently, the workmanship of most four-piece sets and single duvet covers on the market is the same. Zippers are often used for edge sealing of duvet covers. However, with long-term use or when changing the duvet insert, zippers can easily get stuck due to fabric getting inside, causing damage. Traditionally, duvet covers and zippers are integrated, making it inconvenient to repair or replace the zipper when it is damaged, resulting in fabric waste. Furthermore, the duvet insert is prone to shifting when installing, making the process of installing the duvet cover and insert cumbersome and labor-intensive. Utility Model Content
[0003] To address the problems of traditional zippers being integrated with duvet covers, which make replacement or repair inconvenient when the zipper is damaged, leading to fabric waste, and the tendency for zippers to shift during duvet insert installation due to their single-sided nature, this invention aims to provide an edge-sealing device that facilitates duvet insert replacement with a duvet cover.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a sealing device for facilitating the replacement of duvet covers with duvet inserts, comprising a duvet body, a zipper provided in the middle of one side of the duvet body, a plurality of evenly distributed first-positioning blocks fixedly installed on one side of the zipper, a plurality of evenly distributed first-positioning rings fixedly installed on the side of the duvet body near the zipper, a first-positioning groove formed in the middle of each of the plurality of first-positioning rings, a first-positioning block slidably passing through the first-positioning groove on one side of each of the plurality of first-positioning rings, a second-positioning ring rotatably installed on one side of each of the plurality of second-positioning rings, a slider fixedly installed on one side of each of the plurality of second-positioning rings, a second-positioning groove formed on one side of each of the plurality of second-positioning rings, the limiting blocks and the second-positioning grooves cooperating with each other, a plurality of symmetrically distributed springs fixedly installed on one side of each of the plurality of first-positioning rings, and a limiting bead fixedly installed on one side of each of the plurality of springs.
[0005] Preferably, four symmetrically distributed baffles are fixedly installed in the middle of the cover, and pull ropes are fixedly installed at both ends of the four baffles. The pull ropes slide through one end of the baffles on the other side of the middle.
[0006] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0007] 1. This application enables quick disassembly and installation of the duvet cover by using a zipper to seal the edges, thereby solving the problem of inconvenience in disassembling and replacing the duvet insert if the zipper is damaged during assembly, thus making the replacement of the duvet insert more convenient.
[0008] 2. This application can set baffles on both sides of the quilt body, so that the baffles form a sliding groove structure. When installing the quilt core, the two sides of the quilt core can be inserted between the baffles and then continued to be inserted inward, which makes the installation of the quilt core more convenient and ensures that the quilt core will not shift. Attached Figure Description
[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0010] Figure 1 This is a schematic diagram of the structure of this utility model.
[0011] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0012] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.
[0013] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.
[0014] Figure 5 This is a partial cross-sectional structural diagram of the present invention.
[0015] Figure 6 This utility model Figure 5 Enlarged view of point B in the middle.
[0016] Figure 7 This is a schematic diagram of the cross-sectional structure of the body of this utility model.
[0017] In the diagram: 1. Blanket; 11. Backing cloth; 12. Anti-slip strip; 13. Pull cord; 131. Small hole; 2. Zipper; 21. Magnetic block; 22. Limiting block; 23. First limiting ring; 231. First groove; 24. Second limiting ring; 241. Cavity; 242. Second groove; 25. Slide groove; 251. Slider; 26. Spring; 27. Limiting bead; 271. Limiting groove. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Example: Figure 1-7 As shown, this utility model provides a sealing device for facilitating the replacement of duvet covers with duvet inserts. It includes a duvet body 1, a zipper 2 located in the middle of one side of the duvet body 1, a plurality of evenly distributed first-positioning blocks 22 fixedly installed on one side of the zipper 2, a plurality of evenly distributed first-positioning rings 23 fixedly installed on the side of the duvet body 1 near the zipper 2, each first-positioning ring 23 having a first-positioning groove 231 in its middle, each first-positioning block 22 slidingly penetrating one side of the first-positioning ring 23, each first-positioning ring 23 having a second-positioning ring 24 rotatably installed on one side, each second-positioning ring 24 having a slider 251 fixedly installed on one side, each second-positioning ring 24 having a second-positioning groove 242 on one side, the first-positioning blocks 22 and second-positioning grooves 242 working together, each first-positioning ring 23 having a plurality of symmetrically distributed springs 26 fixedly installed on one side, and each spring 26 having a limiting bead 27 fixedly installed on one side.
[0020] Four symmetrically distributed baffles 11 are fixedly installed in the middle of the body 1. Pull ropes 13 are fixedly installed at both ends of the four baffles 11. The other side of the pull ropes 13 slides through one end of the baffles 11. By setting the baffles 11, which are made of soft silicone material, the comfort of the user is guaranteed.
[0021] Each of the multiple first-position limit rings 23 has a groove 25 on one side, and multiple sliders 251 are slidably locked inside the groove 25. By setting the groove 25 and the sliders 251, the connection between the first-position limit ring 23 and the second-position limit ring 24 is made tighter.
[0022] Multiple symmetrically distributed limiting grooves 271 are provided on one side of multiple second limiting rings 24, and multiple limiting beads 27 are slidably locked inside the limiting grooves 271. By setting the limiting grooves 271, the limiting beads 27 are slidably locked inside the limiting grooves 271, thereby limiting and fixing the second limiting rings 24.
[0023] Four symmetrically distributed magnetic blocks 21 are fixedly installed on one side of both the zipper 2 and the body 1. The multiple magnetic blocks 21 work together. By setting the magnetic blocks 21, when installing the zipper 2, the zipper 2 can be positioned and limited by the mutual attraction of the magnetic blocks 21, so as to facilitate its installation and fixation.
[0024] Each of the multiple second-position limiting rings 24 has a cavity 241 in the middle, and multiple limiting blocks 22 are slidably locked inside the cavity 241. By setting the cavity 241, one end of the limiting block 22 is locked inside the cavity 241, thereby fixing the limiting block 22.
[0025] Four symmetrically distributed small holes 131 are provided on both sides of the cover 1. Multiple pull ropes 13 slide through the small holes 131. By setting pull ropes 13 and small holes 131, after pulling the pull ropes 13 to tighten the cover 11, the pull ropes 13 can be knotted to ensure that the pull ropes 13 will not return to their original position through the small holes 131.
[0026] Two symmetrically distributed anti-slip strips 12 are fixedly installed on the upper and lower surfaces of the inner surface of the quilt body 1. By setting the anti-slip strips 12, which are made of soft silicone material, the anti-slip strips 12 can fit closely to the quilt core while ensuring the user's comfort.
[0027] Working principle: In actual use, when it is necessary to disassemble the zipper 2 used to seal the edge of the body 1, the multiple second-position limiting rings 24 can be rotated counterclockwise by 45° to align the second-position groove 242 with the first-position groove 231. This allows the limiting block 22 to be pulled out from inside the cavity 241. After the first-position groove 231 and the second-position groove 242 are aligned, the limiting block 22 can be released, allowing the zipper 2 to be disassembled. During installation, the limiting block 22 is inserted into... Inside cavity 241, rotating the second limiting ring 24 clockwise by 45° will cause the first groove 231 and the second groove 242 to no longer align, thereby limiting the limiting block 22. When the second limiting ring 24 rotates in both directions, the limiting bead 27 will slide and be locked inside the limiting groove 271 under the reaction force of the spring 26, thus limiting the second limiting ring 24 and ensuring that the second limiting ring 24 will not continue to rotate.
[0028] When assembling the comforter insert and comforter body 1, the comforter insert is placed inside the comforter body 1 by opening the zipper 2. Both sides of the comforter insert are placed between the baffles 11. The sliding groove structure formed by the baffles 11 makes it easy to place the comforter insert flat inside the comforter body 1. After pulling the pull rope 13 to tighten both sides of the baffles 11, the pull rope 13 is knotted to fix it. That is, the comforter insert can be clamped and fixed by the baffles 11.
[0029] 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. A device for facilitating the edging of a cover for a core replacement mattress comprising a body (1) characterised in that: The side middle part of the body (1) is provided with a zipper (2), one side of the zipper (2) is fixedly installed with a plurality of uniformly distributed first limiting blocks (22), the side close to the zipper (2) of the body (1) is fixedly installed with a plurality of uniformly distributed first limiting rings (23), the middle part of the plurality of first limiting rings (23) is provided with a first slot body (231), one side of the plurality of limiting blocks (22) is slidably penetrated through the first slot body (231), one side of the plurality of first limiting rings (23) is rotatably installed with a second limiting ring (24), one side of the plurality of second limiting rings (24) is fixedly installed with a sliding block (251), one side of the plurality of second limiting rings (24) is provided with a second slot body (242), the limiting block (22) and the second slot body (242) are used in cooperation, one side of the plurality of first limiting rings (23) is fixedly installed with a plurality of symmetrically distributed springs (26), one side of the plurality of springs (26) is fixedly installed with a limiting bead (27).
2. The edge covering device for facilitating the changing of a core cover of claim 1, wherein, The middle part of the body (1) is fixedly installed with four symmetrically distributed cloth barriers (11), both ends of the four cloth barriers (11) are fixedly installed with pull ropes (13), and the other side middle part of the plurality of pull ropes (13) is slidably penetrated through one end of the cloth barrier (11).
3. The edging device of claim 1, wherein, One side of the plurality of first limiting rings (23) is provided with a sliding groove (25), and the plurality of sliding blocks (251) are slidably clamped in the inside of the sliding groove (25).
4. The edging device of claim 1, wherein, One side of the plurality of second limiting rings (24) is provided with a plurality of symmetrically distributed limiting grooves (271), and the plurality of limiting beads (27) are slidably clamped in the inside of the limiting grooves (271).
5. The means for edging a case-changing cover of claim 1, wherein, The zipper (2) and the body (1) are fixedly installed with four symmetrically distributed magnetic attraction blocks (21), and the plurality of magnetic attraction blocks (21) are used in cooperation.
6. The means for edging a case-changing coverlet of claim 1, wherein, The middle part of the plurality of second limiting rings (24) is provided with a cavity (241), and the plurality of limiting blocks (22) are slidably clamped in the inside of the cavity (241).
7. The means for edging a case-changing coverlet of claim 2, wherein, Both sides of the body (1) are provided with four symmetrically distributed small holes (131), and the plurality of pull ropes (13) are slidably penetrated through the small holes (131).
8. The means for edging a case-changing coverlet of claim 1, wherein, The inside upper surface and the lower surface of the body (1) are fixedly installed with two symmetrically distributed anti-skid strips (12).