Envelope type sleeping bag capable of being used in four seasons
By using a three-layer envelope-style sleeping bag cover and a removable comforter, the design solves the problem of insufficient all-season applicability of traditional envelope-style sleeping bags, achieving universality for all seasons and providing multiple thickness options to meet the temperature needs of different seasons.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-04-03
Smart Images

Figure CN224070117U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an envelope-style sleeping bag that can be used in all four seasons, meeting the requirements for use in all four seasons. Background Technology
[0002] Currently, envelope-style sleeping bags are a common design, named for their rectangular shape resembling an envelope when unfolded. They offer ample interior space, allowing for freedom of movement and preventing the user from kicking off the covers. Most traditional envelope sleeping bags have a two-layer construction with only one sleeping compartment; some have a three-layer construction with one sleeping compartment and one comforter compartment. These compartments are not interchangeable or flipped over. The disadvantages of these two types of sleeping bags are: limited design options and inability to meet the needs of scenarios with a wide temperature range throughout the four seasons. Summary of the Invention
[0003] To address the limitation of traditional envelope-style sleeping bags in terms of applicable temperature ranges, this invention provides an envelope-style sleeping bag suitable for all seasons, meeting the needs of users in environments with a wide temperature range across spring, summer, autumn, and winter.
[0004] The technical solution adopted by this utility model to solve the problems of traditional technology is as follows: It consists of a three-layer envelope-style sleeping bag cover and a thermal comforter. The first layer of the three-layer sleeping bag cover is made of regular thickness fabric, the second layer is made of thicker fabric, and the third layer is made of thicker fabric. The first and second layers are connected by three-sided fixed stitching, and the head side is connected by a zipper, forming the first sleeping compartment. The second and third layers are connected by zippers on all four sides, forming the second sleeping compartment, which is removable and washable. Both sleeping compartments can be used for sleeping or filled with a comforter. The cover can also be flipped over for use. By using different flipping directions / sleeping compartment / comforter usage options in different seasons, different thickness comforter modes can be obtained, achieving the effect of a sleeping bag suitable for all seasons.
[0005] The beneficial effects of this utility model are: it provides more sleeping bag and blanket thickness options to meet the usage needs of scenarios with a large temperature range in spring, summer, autumn and winter, and the structure is simple. Attached Figure Description
[0006] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0007] Figure 1 This is a utility model.
[0008] Figure 2 This is a schematic diagram of an embodiment of the present invention.
[0009] The image shows: 1. Three-layer envelope-style sleeping bag cover; 2. Comforter insert; 3. First layer of comforter; 4. Second layer of comforter; 5. Third layer of comforter; 6. First sleeping compartment; 7. Second sleeping compartment; 8. Sewn connection; 9. Zipper connection; 10. Zipper on the head side of the first sleeping compartment; 11. Zipper on the head side of the second sleeping compartment; 12. Hand hole. Detailed Implementation
[0010] exist Figure 2 In the illustrated embodiment,
[0011] 2.1 The first layer of fabric 3 is on top, and the first sleeping chamber 6 is used;
[0012] 2.2 The first layer of bedding 3 is on top, and the second sleeping chamber 7 is used;
[0013] 2.3 is the third layer of quilt 5 on top, using the second sleeping chamber 7;
[0014] 2.4 is the third layer of quilt 5 on top, using the first sleeping chamber 6;
[0015] 2.5 The first layer of quilt 3 is on top, the first sleeping compartment 6 is filled with quilt core 2, and the second sleeping compartment 7 is used;
[0016] 2.6 The third layer of quilt 5 is on top, and the second sleeping compartment 7 is filled with quilt core 2, using the first sleeping compartment 6.
Claims
1. A year-round envelope-style sleeping bag, consisting of a three-layer envelope-style sleeping bag cover and a thermal comforter, characterized by: The first layer of the three-layer sleeping bag cover is a regular thickness fabric, the second layer is a thickened fabric, and the third layer is a thickened fabric; the first layer and the second layer are connected by three-side fixed sewing, the head side is connected by a zipper, forming a first sleeping compartment; the second layer and the third layer are connected by zippers on all four sides, forming a second sleeping compartment, which can be disassembled and cleaned.