Sandwich pillow
By designing the upper and lower cover structure of the sandwich pillow, and combining ultra-soft slow-rebound memory foam and high-resilience sponge materials, the problem of height adjustment and single-sided use of existing pillows has been solved, providing multiple support heights and comfort levels, and improving sleep health.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-03
AI Technical Summary
Most existing pillows do not have height adjustment function, and pillows with neck support function often only have one working surface, which cannot meet the needs of different people, and the front and back need to be distinguished when using them.
Design a sandwich pillow with two interlocking upper and lower covers containing a pillow core. The pillow core has support sections of different heights on both sides, and both sides of the pillow have curved surfaces that conform to the cervical spine. The materials are ultra-soft slow-rebound memory foam and high-resilience sponge, providing multiple support heights and levels of comfort.
It allows users to adjust the pillow height according to their individual needs, improving sleep comfort and quality, meeting the needs of different groups of people, and eliminating the need to distinguish between the front and back of the pillow, thus enhancing cervical spine support and sleep health.
Smart Images

Figure CN223958605U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of pillow manufacturing technology, and in particular to a sandwich pillow. Background Technology
[0002] With the development of the times, more and more people are working indoors, and prolonged use of electronic products can put a strain on the cervical spine. If the cervical spine is under high load for a long period, it is likely to develop cervical spondylosis. Since the human body spends about one-third of its time sleeping each day, cervical spine protection during sleep is particularly important. Therefore, a pillow is not just a sleep aid; it also serves to support the neck. Choosing a suitable pillow can greatly alleviate the burden on the cervical spine.
[0003] Due to differences in human anatomy and lifestyle, different people have different needs for pillow height. Most pillows currently on the market lack height adjustment; users can only change the height by replacing or stacking pillows. Furthermore, pillows with neck support functions often only have one side, and users may not be inclined to distinguish between the front and back of the pillow when tired or getting up at night. Utility Model Content
[0004] One of the objectives of this application is to provide a sandwich pillow that can solve at least one of the defects in the aforementioned background art.
[0005] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: a sandwich pillow, comprising two mutually cooperating upper and lower covers, with a pillow core installed between the upper and lower covers, and a first support portion and a second support portion of different heights respectively provided on both sides of the pillow core, the first support portion comprising two first mating surfaces symmetrically arranged on both sides of the pillow core, and the second support portion comprising two second mating surfaces symmetrically arranged on both sides of the pillow core; both the first mating surfaces and the second mating surfaces are curved surfaces that conform to the cervical spine of the head.
[0006] With the above settings, users can place their head on the first support or the second support according to their own needs. The curved surfaces of the first and second mating surfaces are ergonomic and can better fit the user's head and cervical spine, providing the user with a healthy sleeping angle. In addition, the pillow has a first and second mating surfaces on both sides, so users do not need to spend time distinguishing between the front and back.
[0007] Preferably, the upper cover has a first recessed portion, the lower cover has a second recessed portion, and the two sides of the pillow core are respectively embedded in the first recessed portion and the second recessed portion. This arrangement allows the pillow core to be wrapped by the first and second recessed portions, providing sufficient space for deformation.
[0008] Preferably, both the first and second recessed portions are provided with arcuate surfaces that mate with the first and second mating surfaces. This design provides a more snug fit for the pillow core, preventing the top and bottom covers from excessively compressing the first and second support portions under normal conditions.
[0009] Preferably, both the upper and lower covers are made of ultra-soft slow-rebound memory foam. This design effectively improves the comfort of the pillow. The slow-rebound memory foam has a slower rebound speed and can change shape according to the shape of the user's body and pressure points, providing more comprehensive support for the body and thus improving the user's sleep quality.
[0010] Preferably, the pillow core is made of high-resilience sponge. This design allows the pillow core to have higher resilience, enabling it to quickly return to its original shape after being compressed, thus ensuring that the pillow core can provide stronger support for the user's body, thereby maintaining the natural curve of the spine, reducing body pressure, and improving sleeping posture.
[0011] Preferably, both the upper cover and the lower cover are rectangles measuring 700mm × 400mm. This design can meet the pillow size requirements of most people.
[0012] Preferably, both the upper cover and the lower cover are 50mm thick. This design provides more space for the installation of the pillow core.
[0013] Preferably, the height of the first support part is 60mm, and the thickness of the second support part is 40mm. With this configuration, users can choose between the first or second support part to support their head and cervical spine based on their preference for a high or low pillow.
[0014] Preferably, both the upper and lower covers have sloping edges on all four sides. This design is more ergonomic, allowing the user's cervical spine to naturally transition onto the pillow along the sloping edges.
[0015] Preferably, the upper cover and the lower cover are glued together. This arrangement increases the pillow's aesthetics and prevents dandruff, dust, and other debris from entering the pillow core and causing odors.
[0016] Compared with the prior art, the beneficial effects of this application are as follows:
[0017] The pillow core has two support sections of different heights, allowing users to choose according to their needs. In addition, the two sides of the pillow core are symmetrically designed, so there is no need to distinguish between the front and back when using it. The curvature of the first and second contact surfaces is more in line with ergonomic principles, which can improve the user's sleep quality.
[0018] The top and bottom covers made of ultra-soft, slow-rebound memory foam enhance pillow comfort and provide more comprehensive support; the high-resilience sponge core provides stronger support for the user's head, allowing the cervical spine to maintain its natural curve. This invention boasts advantages such as wide applicability and high comfort. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of the sandwich pillow in this application.
[0020] Figure 2 This is a schematic diagram of the exploded structure of the sandwich pillow in this application.
[0021] Figure 3 This is a schematic diagram of the pillow core structure in this application. Figure 1 .
[0022] Figure 4 This is a schematic diagram of the pillow core structure in this application. Figure 2 .
[0023] Figure 5 This is a schematic diagram of the structure of the top cover in this application.
[0024] Figure 6 This is a schematic diagram of the structure of the lower cover in this application.
[0025] Figure 7 This is a cross-sectional view of the lower cover in this application.
[0026] In the figure: 1. Top cover; 11. First recessed part; 100. Arc surface; 2. Bottom cover; 21. Second recessed part; 3. Pillow core; 31. First support part; 32. Second support part; 310. First mating surface; 320. Second mating surface. Detailed Implementation
[0027] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0028] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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. They should not be construed as limiting the specific protection scope of this application.
[0029] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0030] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.
[0031] One aspect of this application provides a sandwich pillow, such as Figure 1 , Figure 2 and Figure 3 As shown, one preferred embodiment includes two upper covers 1 and lower covers 2 that can cooperate to form a pillow. To further improve the support effect of the pillow, a pillow core 3 is installed between the upper covers 1 and the lower covers 2. A first support part 31 and a second support part 32 with different heights are respectively provided on both sides of the pillow core 3. The user can quickly adjust the support height by simply rotating the pillow.
[0032] Understandably, compared to traditional pillows, the pillow in this application has greater applicability, and users can place their head on the first support part 31 or the second support part 32 according to their own needs to provide different height support for the neck.
[0033] Specifically, such as Figure 3 and Figure 4 As shown, the first support part 31 includes two first mating surfaces 310 symmetrically arranged on both sides of the pillow core 3, and the second support part 32 includes two second mating surfaces 320 symmetrically arranged on both sides of the pillow core 3; both the first mating surfaces 310 and the second mating surfaces 320 are curved surfaces adapted to fit the head and cervical spine. When the user places their head on the first support part 31 or the second support part 32, the first mating surfaces 310 or the second mating surfaces 320 can provide more close support to the cervical spine, thereby providing the user with a healthy and comfortable sleeping angle; in addition, the pillow has first mating surfaces 310 and second mating surfaces 320 on both sides, so the user does not need to spend time distinguishing between the front and back.
[0034] It should be noted that the curvature of the first mating surface 310 and the second mating surface 320 should conform to the principles of ergonomics.
[0035] In this embodiment, as Figure 5 and Figure 6As shown, the upper cover 1 has a first recess 11 on the side near the pillow core 3, and the lower cover 2 has a second recess 21 on the side near the pillow core 3. Embedding both sides of the pillow core 3 into the first recess 11 and the second recess 21 respectively allows the pillow core 3 to be wrapped. Designing the pillow core 3 as an externally embedded module provides sufficient deformation space for the pillow core 3 through the first recess 11 and the second recess 21, thus preventing the upper cover 1 and lower cover 2 from compressing the pillow core 3 over a long period, which would affect its deformation capacity.
[0036] Specifically, such as Figure 6 As shown, both the first recess 11 and the second recess 21 are provided with an arc surface 100 that matches the first mating surface 310 and the second mating surface 320. When the pillow core 3 is embedded in the first recess 11 and the second recess 21, the arc surface 100 can more closely wrap around the curved surface of the first mating surface 310 and the second mating surface 320, so as to prevent the upper cover 1 and the lower cover 2 from squeezing the first support part 31 and the second support part 32 in their natural state. In addition, when the upper cover 1 and the lower cover 2 are subjected to external force, the external force can be evenly applied to the pillow core 3 along the arc surface 100, so that the deformation of the pillow core 3 is more uniform.
[0037] In this embodiment, both the upper cover 1 and the lower cover 2 are made of ultra-soft slow-rebound memory foam. Ultra-soft slow-rebound memory foam is a type of polyurethane foam that can be molded according to the weight and shape of the human body, effectively improving the comfort of the pillow. When ultra-soft slow-rebound memory foam is subjected to external pressure, it can evenly distribute the pressure throughout its body. Furthermore, because ultra-soft slow-rebound memory foam has a slow rebound speed, it can change shape according to the user's body shape and pressure points, providing more comprehensive support and thus improving the user's sleep quality.
[0038] It should be understood that, in order to better protect the neck, a pillow should provide a certain level of support to allow the user's neck to maintain a reasonable curvature. However, if all components of a pillow are made of ultra-soft, slow-rebound memory foam, it will not be able to provide more significant support for the user's neck.
[0039] Therefore, in some embodiments of this application, in order to further improve the support strength of the pillow, the pillow core 3 is made of high-resilience sponge to ensure that the pillow core 3 has higher resilience. When the pillow core 3 is compressed, it can quickly return to its original shape, thereby providing stronger support for the user's body, allowing the user's spine to maintain its natural curve, reducing body pressure, and improving sleeping posture.
[0040] In this embodiment, as Figure 5 and Figure 6 As shown, both the upper cover 1 and the lower cover 2 are 700mm × 400mm rectangles, ensuring that this pillow can adapt to the usage needs of different people.
[0041] Furthermore, the height of both the upper cover 1 and the lower cover 2 is 50mm, which further improves the capacity of the first recess 11 and the second recess 21; on the one hand, it can provide more space for the installation of the pillow core 3, and on the other hand, it can also improve the comfort of the pillow.
[0042] In an embodiment, such as Figure 3 and Figure 4 As shown, the height of the first support part 31 is 60mm, and the height of the second support part 32 is 40mm. These two different heights provide users with two different pillow support methods. When the user prefers a high pillow or has a habit of sleeping on their side, the first support part 31 can be aligned with the cervical spine; when the user prefers a low pillow, the second support part 32 can be aligned with the cervical spine.
[0043] Furthermore, to further improve the comfort of the pillow, the upper cover 1 and the lower cover 2 are both set with sloping surfaces on all four sides, and the end faces of the upper cover 1 and the lower cover 2 are set with rounded R-angles between them and their corresponding sides, so that the design of this utility model is more in line with ergonomics, and the user's cervical spine can naturally transition to the pillow along the sloping surface.
[0044] In this embodiment, the upper cover 1 and the lower cover 2 are directly glued together. Compared with traditional sewing or zipper connections, using glue can increase the aesthetics of the pillow and prevent dandruff, dust and other debris from entering the pillow and causing odors.
[0045] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.
Claims
1. A sandwich pillow, comprising two mating upper covers (1) and lower covers (2), characterized in that, A pillow core (3) is installed between the upper cover (1) and the lower cover (2). The pillow core (3) has a first support part (31) and a second support part (32) with different heights on both sides. The first support part (31) includes two first mating surfaces (310) symmetrically arranged on both sides of the pillow core (3). The second support part (32) includes two second mating surfaces (320) symmetrically arranged on both sides of the pillow core (3). Both the first mating surface (310) and the second mating surface (320) are curved surfaces adapted to the cervical spine of the head.
2. The sandwich pillow as described in claim 1, characterized in that, The upper cover (1) is provided with a first recess (11), the lower cover (2) is provided with a second recess (21), and the two sides of the pillow core (3) are respectively embedded in the first recess (11) and the second recess (21).
3. The sandwich pillow as described in claim 2, characterized in that, Both the first recess (11) and the second recess (21) are provided with arc surfaces (100) that are adapted to the first mating surface (310) and the second mating surface (320).
4. The sandwich pillow as described in claim 1, characterized in that, The upper cover (1) and the lower cover (2) are both made of ultra-soft slow-rebound memory foam.
5. The sandwich pillow as described in claim 1, characterized in that, The pillow core (3) is made of high-resilience sponge.
6. The sandwich pillow as described in claim 1, characterized in that, Both the upper cover (1) and the lower cover (2) are rectangles of 700mm × 400mm.
7. The sandwich pillow as described in claim 6, characterized in that, The thickness of both the upper cover (1) and the lower cover (2) is 50 mm.
8. The sandwich pillow as described in claim 1, characterized in that, The height of the first support part (31) is 60mm, and the height of the second support part (32) is 40mm.
9. The sandwich pillow as described in claim 1, characterized in that, The upper cover (1) and the lower cover (2) are both sloped around their perimeter.
10. The sandwich pillow as described in claim 9, characterized in that, The upper cover (1) and the lower cover (2) are bonded together with glue.