A three-sided wrap-around zipper opening encasement
By employing a three-sided wraparound zipper design and a concealed zipper structure, the problems of inconvenient filling, insufficient safety, and inadequate durability in existing duvet covers are solved, enabling fast and smooth filling of the duvet insert and zipper sliding, thereby improving user experience and product durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG KAQI SHIJIA TEXTILE TECHNOLOGY CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-21
AI Technical Summary
Existing duvet cover zipper designs suffer from drawbacks such as narrow openings on one side, making filling inconvenient and cumbersome for users; exposed zippers affect safety and durability; and one-way zippers are prone to jamming, affecting smooth opening and closing.
Featuring a three-sided wraparound zipper design, combined with a double-sided zipper head and zipper guard, the zipper track structure is optimized, filling space is increased, and the hidden design prevents pinching and wear, ensuring smooth zipper sliding.
It enables quick and convenient filling of comforters, improves user experience, enhances the durability and comfort of zippers, and reduces fabric wear and jamming issues.
Smart Images
Figure CN224522801U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bedding design and manufacturing technology, and in particular relates to a duvet cover with a three-sided wraparound zipper opening. Background Technology
[0002] Fleece bedding sets are widely used in homes, hotels, and dormitories, primarily to cover comforters and provide comfort and protection. However, the zipper design of existing duvet covers still has many shortcomings in actual use, affecting the product's convenience, durability, and user experience.
[0003] First, the single-sided opening design has limitations. Traditional duvet covers typically use a single-sided zipper opening, meaning the zipper is only on one side. This restricts the filling and removal of the duvet insert within the narrow opening space. When changing the duvet insert, users need to repeatedly adjust and fold it to lay it out, making the process cumbersome. Especially for large-sized bedding, the single-sided opening structure makes it difficult to quickly adjust the position of the duvet insert, affecting the smoothness of the bedding and increasing housework.
[0004] Secondly, exposed zippers affect safety and durability. Some existing duvet covers use an exposed zipper design, meaning the zipper teeth and zipper pull are directly exposed on the surface without any covering or protection. This design presents the following problems during use: exposed zippers may trap hair or clothing while sleeping, or even scratch the skin, affecting comfort; the zipper teeth are in direct contact with the duvet cover fabric for extended periods, easily causing fabric wear or pilling, affecting the product's appearance and lifespan; the exposed zipper teeth contrast with the soft touch of the duvet cover, reducing overall comfort.
[0005] Furthermore, the zipper's movement is restricted, making it prone to jamming. Traditional one-way zippers typically use a simple track design with low tooth pitch precision. After prolonged use, the following problems may occur: due to insufficient tooth precision, the zipper may be obstructed during sliding, affecting smooth opening and closing; the zipper may easily trap fabric fibers during use, leading to poor sliding or even damage to the zipper; once the zipper jams, it is difficult for users to repair it themselves, usually requiring the replacement of the entire duvet cover, increasing costs.
[0006] In summary, the existing zipper design for duvet covers still has room for improvement in terms of ease of filling, security, and durability. Future technological optimization should focus on improving the opening structure, enhancing zipper sliding performance, and improving the compatibility between the zipper and the fabric to meet users' demands for high-quality home furnishing products. Summary of the Invention
[0007] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a three-sided wraparound zipper opening duvet cover to solve the problems of narrow single-sided opening, difficulty in filling the duvet core, need for repeated adjustment during disassembly and assembly, which affects the efficiency of housework; exposed zippers are unsafe and easily trap fabric or skin, and long-term use leads to fabric wear and pilling; one-way zippers are prone to jamming and lint trapping, affecting smooth opening and closing.
[0008] To achieve the above and other related objectives, this utility model provides a three-sided wraparound zippered duvet cover, comprising a duvet cover body and a zipper. The duvet cover body includes a head edge, a first side edge, a foot edge, and a second side edge. The head edge includes a first head edge, a second head edge, and a third head edge. The first head edge is connected to the first side edge, and the third head edge is connected to the second side edge. The second head edge is sealed. The first head edge, the first side edge, the foot edge, the second side edge, and the third head edge are all closed by the zipper. The zipper includes a toothed chain and one or more zipper heads. The toothed chain is sequentially connected to the first head edge, the first side edge, the foot edge, the second side edge, and the third head edge, and both ends of the toothed chain are respectively connected to both ends of the second head edge. A zipper guard is also provided on the side of the toothed chain away from the duvet cover body.
[0009] In some embodiments of this utility model, each of the zipper heads is a double-sided zipper head.
[0010] In some embodiments of this utility model, the four corners of the duvet cover body are provided with fixing members for fixing the duvet core.
[0011] In some embodiments of this invention, the head edge is sealed by a sealing element.
[0012] In some embodiments of this utility model, the sealing element is hot melt adhesive, cloth strip, or adhesive layer.
[0013] In some embodiments of this utility model, when there are two zipper heads, the zipper is a bidirectional sliding zipper.
[0014] In some embodiments of this utility model, the zipper guard is a double-layered fabric.
[0015] In some embodiments of this utility model, the width of the zipper flap is 2-10cm.
[0016] In some embodiments of this utility model, each zipper head is provided with an antistatic coating.
[0017] In some embodiments of this utility model, the lengths of the first edge and the third edge of the head are both 5-50cm.
[0018] As described above, the three-sided wraparound zipper opening duvet cover of this utility model has the following beneficial effects:
[0019] 1) This utility model expands the filling space of the comforter core through the three-sided wraparound zipper opening design, making disassembly and assembly faster and more convenient;
[0020] 2) This utility model achieves a hidden zipper design by using a zipper guard, which effectively prevents pinching and fabric damage;
[0021] 3) This utility model optimizes the zipper track structure, reduces zipper jamming and lint trapping, and ensures long-term stable use. Attached Figure Description
[0022] Figure 1 The diagram shown is a schematic representation of the overall structure of an embodiment of this utility model.
[0023] Figure 2 The diagram shown is a structural schematic of the zipper head according to an embodiment of the present invention.
[0024] Figure 3 The diagram shown is a schematic of the zipper guard folding during the engagement of the toothed chain in an embodiment of this utility model.
[0025] Figure 4 The diagram shown is a schematic representation of the usage process of an embodiment of this utility model.
[0026] Component designation explanation
[0027] 1. Cover body
[0028] 11. Head edge
[0029] 111 First edge of the head
[0030] 112 Second edge of the head
[0031] 113 Third border of the head
[0032] 12 First side edge
[0033] 13. Foot edge
[0034] 14 Second side edge
[0035] 2 Zipper
[0036] 21 Toothed chain strap
[0037] 22 Zipper Heads
[0038] 3 Zippered backsplash Detailed Implementation
[0039] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.
[0040] Please see Figure 1-4 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.
[0041] like Figure 1-4 As shown, this utility model provides a duvet cover with a three-sided wraparound zipper opening, including a duvet cover body 1 and a zipper 2. Each edge of the duvet cover body 1 is an area where two layers of fabric connect, including a head edge 11, a first side edge 12, a foot edge 13, and a second side edge 14. The head edge 11 includes a first head edge 111, a second head edge 112, and a third head edge 113. The first head edge 111 connects to the first side edge 12, the third head edge 113 connects to the second side edge 14, and the second head edge 112 is sealed. Edge 111, first side edge 12, foot edge 13, second side edge 14, and head third edge 113 are all closed by zipper 2 to achieve closure of the upper and lower layers of fabric of the duvet cover. Zipper 2 includes a toothed chain strap 21 and one or more zipper heads 22. The toothed chain strap 21 connects the first head edge 111, first side edge 12, foot edge 13, second side edge 14, and head third edge 113 in sequence, and the two ends of the toothed chain strap 21 are respectively connected to the two ends of the second head edge 112. A zipper guard 3 is also provided on the front side of the toothed chain strap 21. The front side of the toothed chain strap 21 refers to the outer side of the toothed chain strap 21, generally the side of the toothed chain strap 21 that is exposed on the front of the duvet cover fabric after being sewn into the opening of the duvet cover, that is, the side of the duvet cover that is visible when in use, corresponding to the reverse or inner side of the duvet cover. One side of the zipper guard 3 is connected to the duvet cover body 1.
[0042] In actual use, the user first unlocks zipper 2 and slides zipper head 22 starting from the first edge 111 at the head, gradually opening the first side edge 12, foot edge 13, second side edge 14, and third edge 113 at the head, creating a spacious filling space. Because the two ends of the zipper strap 21 are connected to the two ends of the second edge 112 at the head, unlike conventional duvet covers where the zipper is located at the corners of the duvet cover (i.e., at the two ends of the head edge 11), the zipper operates smoothly during opening and closing, avoiding problems such as jamming or fabric obstruction due to unreasonable corner angles, which could lead to fabric wear. The user unfolds the duvet insert and lays it flat inside the duvet cover body 1, ensuring it is aligned with the second edge 112 at the head before closing the zipper. Zipper head 22 sequentially closes the third edge 113 at the head, the second side edge 14, the foot edge 13, the first side edge 12, and the first edge 111 at the head, ensuring the duvet insert is securely covered. During the closing process, the zipper guard 3 folds naturally as the zipper is pulled and closed, covering the zipper teeth 21. This helps reduce direct friction between the fabric and the zipper teeth, preventing fabric wear and enhancing overall comfort and aesthetics.
[0043] like Figure 2 As shown, in this embodiment, each zipper pull is a double-sided zipper pull. Unlike a single-pull tab design, this double-sided zipper pull has pull tabs on both sides, which can adapt to different directions of zipper operation according to actual needs. For example, when unlocking or closing the first edge 111 and the third edge 113 of the zipper head, the pull tab closer to the quilt can be used to pull the zipper head 22. The double pull tab design distributes force evenly, effectively reducing the problem of zipper head tilting or jamming, ensuring stable and smooth long-term use, and making the zipper more ergonomic when closing or opening, thus improving user comfort.
[0044] In this embodiment, the four corners of the duvet cover body 1 are provided with fasteners to fix the duvet core and prevent the duvet core from shifting during use. The fasteners can be, for example, strips of cloth, Velcro or buttons.
[0045] In this embodiment, the second edge 112 of the head is sealed by a sealing element, such as hot melt adhesive, a strip of fabric, or an adhesive layer. In actual operation, the strip of fabric is first precisely sewn along the second edge 112 of the head to firmly bond it to the duvet cover body 1, ensuring structural stability and preventing loosening or displacement. In a preferred embodiment, the strip of fabric is sewn onto the side of the second edge 112 of the head near the duvet, and the two ends of the chain strap 21 are fixed to the two ends of the strip of fabric by heat-pressing or sewing.
[0046] like Figure 1As shown in this embodiment, when there are two zipper heads 22, the zipper 2 is a bidirectional sliding zipper 2, that is, two opposing zipper heads 22 can be configured on the same toothed chain 21, which can realize bidirectional opening and closing, optimizing operational flexibility. The user can operate either side of the zipper head 22 individually, sliding it along the toothed chain 21 to make the zipper teeth gradually engage or disengage, which is suitable for scenarios of partial opening or closing. The user can also slide both zipper heads 22 simultaneously, making them slide towards each other along the toothed chain 21, meet and dock at a specific position to complete the overall closure or opening.
[0047] like Figure 3-4 As shown, in this embodiment, one side of the zipper guard 3 is connected to the duvet cover body 1, and the zipper guard 3 is a double-layered fabric. The user slides the zipper head 22 along the zipper teeth 21, causing the zipper teeth to gradually engage and complete the closing process. As the zipper head 22 slides, the zipper guard 3 naturally folds and adheres to the zipper teeth 21, forming a protective layer. This effectively prevents the zipper teeth from directly contacting the duvet cover fabric, effectively reducing friction, lowering the risk of fabric wear, and improving durability and aesthetics.
[0048] In this embodiment, the width of the zipper guard 3 is 2-10cm, and can be selected as 2-4cm, 4-6cm, 6-8cm or 8-10cm.
[0049] In this embodiment, each zipper pull 22 is provided with an antistatic coating. This antistatic coating can effectively reduce the accumulation of static charge, reduce the adsorption of dust and fiber particles, maintain smooth zipper sliding, and at the same time enhance material durability and reduce the impact of static electricity on the zipper pull.
[0050] In this embodiment, the lengths of the first edge 111 and the third edge 113 of the head can be selected as 5-10cm, 10-20cm, 20-30cm, 30-40cm or 40-50cm.
[0051] The process of using this utility model, such as Figure 1-4 As shown:
[0052] The user first uses the zipper pull 22 to sequentially disengage the teeth 21 of the first edge 111 of the head, the first side edge 12, the foot edge 13, the second side edge 14, and the third edge 113 of the head. Once the zipper 2 is fully unlocked, the upper and lower layers of fabric at the first side edge 12, the foot edge 13, and the second side edge 14 are separated, creating a spacious filling space. The upper and lower layers of fabric at the first edge 112 of the head are sealed with sewn strips, allowing the comforter insert to be directly aligned with the edge of the first edge 112 of the head and laid flat inside the duvet cover body 1 without repeated adjustments or folds. During the filling process, the comforter insert is secured by the fasteners 3 located at the four corners of the duvet cover body 1 to prevent displacement. After the comforter insert is inserted, the upper and lower layers of fabric of the duvet cover are overlapped, and the zipper pull 22 is pulled sequentially along the second side edge 14, the foot edge 13, the first side edge 12, and the first edge 111 of the head, causing the teeth 21 of the teeth to gradually engage, thus gradually closing the duvet cover body 1 and ensuring the comforter insert is securely covered. As the zipper 2 is pulled or closed, the zipper guard 3 naturally folds and covers the outside of the toothed chain 21, providing an extra protective layer for the zipper 2, reducing friction wear, and improving comfort and durability.
[0053] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A duvet cover with a three-sided wraparound zipper opening, characterized in that, The duvet cover includes a body (1) and a zipper (2). The body (1) includes a head edge (11), a first side edge (12), a foot edge (13), and a second side edge (14). The head edge (11) includes a first head edge (111), a second head edge (112), and a third head edge (113). The first head edge (111) is connected to the first side edge (12), and the third head edge (113) is connected to the second side edge (14). The second head edge (112) is sealed. The first head edge (111) and the first side edge (14) are connected to the first side edge (12). The edge (12), foot edge (13), second side edge (14) and head third edge (113) are all closed by a zipper (2); the zipper (2) includes a toothed chain (21) and two zipper heads (22). The toothed chain (21) is connected in sequence to the head first edge (111), the first side edge (12), the foot edge (13), the second side edge (14) and the head third edge (113). The two ends of the toothed chain (21) are respectively connected to the two ends of the head second edge (112). The front side of the toothed chain (21) is also provided with a zipper guard (3). The zipper (2) is a two-way sliding zipper.
2. The duvet cover with a three-sided wraparound zipper opening as described in claim 1, characterized in that, Each of the zipper heads (22) is a double-sided zipper head.
3. The duvet cover with a three-sided wraparound zipper opening as described in claim 1, characterized in that, The four corners of the duvet cover body (1) are provided with fasteners for fixing the duvet core.
4. The three-sided wraparound zipper opening duvet cover as described in claim 1, characterized in that, The second edge (112) of the head is sealed by a seal.
5. The three-sided wraparound zipper opening duvet cover as described in claim 4, characterized in that, The sealing element is hot melt adhesive, cloth strip, or adhesive layer.
6. The three-sided wraparound zipper opening duvet cover as described in claim 1, characterized in that, The zipper guard (3) is a double-layered fabric.
7. The duvet cover with a three-sided wraparound zipper opening as described in claim 1, characterized in that, The width of the zipper guard (3) is 2-10cm.
8. The duvet cover with a three-sided wraparound zipper opening as described in claim 1, characterized in that, Each of the zipper heads (22) is provided with an antistatic coating.
9. The duvet cover with a three-sided wraparound zipper opening as described in claim 1, characterized in that, The lengths of the first edge (111) and the third edge (113) of the head are both 5-50cm.