A partitioned spinal support sponge core
By setting up upper, support, and lower foam layers with curved surfaces, the problem of foam cores not being able to adapt to the curvature of the human spine is solved, achieving the effect of local support and comfortable touch, and meeting the lumbar support needs of different groups of people.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SLEEMON HEALTHY SLEEP TECHNOLOGY CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-03
AI Technical Summary
Existing foam cores cannot adapt to the natural curvature of the human spine, resulting in excessive pressure or insufficient support in certain areas, and failing to meet the lumbar support needs of different groups of people.
The system employs a curved, bonded upper sponge layer, a support sponge layer, and a lower sponge layer. The support sponge layer is harder than the other two layers, forming multiple functional zones with varying hardness to provide localized support.
It achieves a perfect fit between the sponge core and the curves of the human body, providing a comfortable feel and effective local support to meet the lumbar health needs of different groups of people.
Smart Images

Figure CN224440851U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mattresses, and specifically relates to a partitioned spinal support sponge core. Background Technology
[0002] The human spine is not a straight line, but has natural physiological curvatures, including cervical lordosis, thoracic kyphosis, lumbar lordosis, and sacral kyphosis. When lying down, the pressure distribution on the foam core varies in different parts of the body. Furthermore, children and adolescents, in their growth and development stage, need suitable thin pads to help their spines develop normally; the elderly, due to declining bodily functions and bone calcium loss, often also need spinal support pads to relieve lower back discomfort; for people who frequently sit or stand for long periods, or engage in heavy physical labor, as well as patients with lumbar disc herniation and other lower back conditions, the spinal support function of thin pads is even more important, helping to reduce lower back pressure, relieve pain, and promote recovery. However, ordinary foam cores typically provide uniform support and cannot adapt to this curved structure, easily leading to excessive pressure or insufficient support in certain areas. Utility Model Content
[0003] To address the problem that existing mattress cores do not provide ideal lumbar support, this utility model provides a zoned spinal support sponge core. By setting up an upper sponge layer, a support sponge layer, and a lower sponge layer with curved surfaces, it plays a role in local support and improves the support effect of the mattress core.
[0004] The technical solution adopted by this utility model is as follows: a partitioned spinal support sponge core, including an upper sponge layer and a lower sponge layer that can be enclosed together, a supporting sponge layer is provided between the upper sponge layer and the lower sponge layer, the hardness of the supporting sponge layer is greater than that of the upper sponge layer and the lower sponge layer, the supporting sponge layer is convex upward, and the upper sponge layer, the supporting sponge layer and the lower sponge layer are curved and fitted together.
[0005] The supporting sponge layer has a high degree of hardness and is convex upward, which can provide a good support effect. The upper sponge layer, supporting sponge layer and lower sponge layer are curved and bonded together. The contact area of the three is larger than that of a flat surface, so it has a more ideal bonding effect. After the adhesive is applied, the connection is reliable and not easy to loosen.
[0006] Furthermore, the upper surface of the lower sponge layer is curved, having an upper convex section and a lower concave section, which are smoothly connected. The lower surface of the supporting sponge layer is in contact with the upper convex section. The smooth connection between the upper convex section and the lower concave section reduces molding difficulty and improves the appearance.
[0007] Furthermore, the lower surface of the upper sponge layer is curved, having a first curved section, a second curved section, and a third curved section, wherein the first curved section is fitted with the upper convex section, the second curved section is fitted with the upper surface of the supporting sponge layer, and the third curved section is fitted with the lower concave section.
[0008] Furthermore, the upper surface of the upper sponge layer has multiple functional areas formed by different convex and concave surfaces, with adjacent functional areas having different depths of convex and concave surfaces. This design allows for easy visual differentiation between different functional areas.
[0009] Furthermore, the convex and concave surfaces are formed by cutting the upper surface of the upper sponge layer, and the convex and concave surfaces in adjacent functional areas have different cutting densities. This design makes it easier to directly distinguish different functional areas from their appearance, and the tactile feel will also be different.
[0010] Furthermore, the upper and lower sponge layers have different hardnesses, forming multiple functional zones with varying hardnesses after being bonded together on a curved surface. Because the upper and lower sponge layers have different hardnesses and are bonded on a curved surface, the overall thickness remains unchanged after bonding. This creates multiple different functional zones as the curved surface convexes and concaves, resulting in a comfortable feel and a natural transition.
[0011] Furthermore, the lower sponge layer is harder than the upper sponge layer. The softer upper sponge layer provides a more comfortable feel, while the firmer lower sponge layer provides sufficient support.
[0012] Furthermore, the length of the supporting sponge layer is 200-400mm, and the thickness is 15-20mm. In this configuration, the supporting sponge layer can provide good local support.
[0013] Furthermore, the upper and lower sponge layers together form a first end face near the head of the bed, and the distance between the supporting sponge layer and the first end face is 500-700mm.
[0014] Furthermore, the overall thickness of the partitioned spinal support sponge core is 50-150mm.
[0015] The beneficial effects of this utility model are as follows: This application is a partitioned spine support sponge core. The support sponge layer with higher hardness is convex, which can provide better local support. The upper sponge layer, support sponge layer and lower sponge layer are curved and bonded together. The contact area of the three is larger than that of a flat surface, so it has a more ideal bonding effect. After being glued together, the connection is reliable and not easy to loosen. Attached Figure Description
[0016] Figure 1 A schematic diagram of the side structure of the partitioned spinal support sponge core;
[0017] Figure 2 Schematic diagram of the assembly structure of the partitioned spinal support sponge core;
[0018] Figure 3 A schematic diagram showing the structure supporting the location of the sponge layer;
[0019] In the diagram: 1-Upper sponge layer; 11-First curved section; 12-Second curved section; 13-Third curved section; 2-Lower sponge layer; 21-Upper convex section; 22-Lower concave section; 3-Supporting sponge layer. Detailed Implementation
[0020] The technical solutions of the embodiments of this utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of this utility model.
[0021] A type of partitioned spinal support sponge core, such as Figures 1 to 3 It includes an upper sponge layer 1 and a lower sponge layer 2 that can be enclosed together. A supporting sponge layer 3 is provided between the upper sponge layer 1 and the lower sponge layer 2. The supporting sponge layer 3 has a harder hardness than the upper sponge layer 1 and the lower sponge layer 2. The supporting sponge layer 3 is convex upward. The upper sponge layer 1, the supporting sponge layer 3 and the lower sponge layer 2 are curved and fitted together.
[0022] The supporting sponge layer 3 has a high hardness and is convex upward, which can provide a good support effect. The upper sponge layer 1, the supporting sponge layer 3 and the lower sponge layer 2 are curved and bonded together. The contact area of the three is larger than that of a flat surface, so it has a more ideal bonding effect. After the adhesive is applied, the connection is firm and not easy to loosen.
[0023] The upper surface of the lower sponge layer 2 is curved, having an upper convex section 21 and a lower concave section 22, which are smoothly connected. The lower surface of the supporting sponge layer 3 is in contact with the upper convex section 21. The smooth connection between the upper convex section 21 and the lower concave section 22 reduces molding difficulty and improves the appearance.
[0024] The lower surface of the upper sponge layer 1 is curved, having a first curved section 11, a second curved section 12, and a third curved section 13. The first curved section 11 is attached to the upper convex section 21, the second curved section 12 is attached to the upper surface of the supporting sponge layer 3, and the third curved section 13 is attached to the lower concave section 22.
[0025] The upper surface of the upper sponge layer 1 has multiple functional areas formed by different convex and concave surfaces, with different depths of the convex and concave surfaces in adjacent functional areas. This design makes it easy to distinguish different functional areas directly from their appearance.
[0026] The raised and recessed surfaces are formed by cutting the upper surface of the upper sponge layer 1, and the raised and recessed surfaces in adjacent functional areas have different cutting densities. This design further facilitates direct differentiation of different functional areas from their appearance, and also provides a different tactile feel.
[0027] The upper sponge layer 1 and the lower sponge layer 2 have different hardnesses, forming multiple functional zones with varying hardnesses after being curved and bonded together. Because the upper sponge layer 1 and the lower sponge layer 2 have different hardnesses and are bonded together with curved surfaces, the overall thickness remains unchanged after bonding. Furthermore, the hardness of the upper sponge layer 1 and the lower sponge layer 2 is superimposed in the vertical direction. This creates multiple functional zones with varying hardnesses due to the upward and downward convexity of the curved surface, resulting in a comfortable feel and a natural transition. The combination of these two zoning methods facilitates direct observation and allows for differentiation of different functional zones through varying tactile sensations.
[0028] The lower sponge layer 2 is harder than the upper sponge layer 1. The upper sponge layer 1 is softer, providing a more comfortable feel, while the lower sponge layer 2 is harder, providing sufficient support.
[0029] The supporting sponge layer 3 has a length of 200-400mm and a thickness of 15-20mm. In this configuration, the supporting sponge layer 3 can provide good local support.
[0030] The upper sponge layer 1 and the lower sponge layer 2 together form a first end face near the head of the bed, and the distance between the supporting sponge layer 3 and the first end face is 500-700mm.
[0031] The overall thickness of the partitioned spinal support sponge core is 50-150mm.
[0032] In this embodiment, the upper sponge layer 1 is made of 28D 40N five-zone irregularly cut blue gel particle inflatable sponge. At a distance of 60cm from the head of the bed, a 28D 220N arched dark blue hard sponge with a length of 30cm is set as a support sponge layer 3; the lower sponge layer 2 is made of 25D 200N white support irregularly shaped sponge.
[0033] In this embodiment, as Figure 1 As shown, five functional zones are formed: head support zone, shoulder and back support zone, waist and hip support zone, thigh support zone, and calf support zone. Among them, the head support zone has a low cutting density, corresponding to the human head, and provides appropriate support; the shoulder and back support zone has a high cutting density, avoiding pressure on the shoulders and providing better pressure relief; the waist and hip support zone has a low cutting density and a larger width, providing strong support; the thigh support zone has a high cutting density, evenly distributing pressure; and the calf support zone has a low cutting density, good support, and promotes blood circulation in the legs.
[0034] Head support area: The thickness of the gel particle cotton is greater than that of the support cotton, which improves softness and prevents pressure on the head.
[0035] Shoulder and back support area: The thickness of the gel particle cotton is approximately the same as the thickness of the support cotton, which improves support and ensures support while avoiding pressure on the shoulders.
[0036] Support areas for the waist, hips, and thighs: The thickness of the gel-particle cotton is greater than that of the support cotton, which improves softness and prevents pressure on the hips and thighs. At the same time, a firm cotton is inserted in the waist and hip area to improve the support of the waist.
[0037] Lower leg support area: The thickness of the gel particle cotton is approximately the same as the thickness of the support cotton, which improves support and ensures the comfort of the lower legs.
[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.
Claims
1. A zoned support foam, characterized by, It includes an upper sponge layer (1) and a lower sponge layer (2) that can be enclosed together. A supporting sponge layer (3) is provided between the upper sponge layer (1) and the lower sponge layer (2). The supporting sponge layer (3) has a higher hardness than the upper sponge layer (1) and the lower sponge layer (2). The supporting sponge layer (3) is convex upward. The upper sponge layer (1), the supporting sponge layer (3) and the lower sponge layer (2) are arc-shaped and attached together.
2. The zoned support foam of claim 1, wherein, The upper surface of the lower sponge layer (2) is curved, and it has an upper convex section (21) and a lower concave section (22). The upper convex section (21) and the lower concave section (22) are smoothly connected, and the lower surface of the supporting sponge layer (3) is in contact with the upper convex section (21).
3. The zoned support foam of claim 2, wherein, The lower surface of the upper sponge layer (1) is curved, having a first curved section (11), a second curved section (12) and a third curved section (13). The first curved section (11) is attached to the upper convex section (21), the second curved section (12) is attached to the upper surface of the supporting sponge layer (3), and the third curved section (13) is attached to the lower concave section (22).
4. The partitioned spinal support sponge core according to claim 1, characterized in that, The upper surface of the upper sponge layer (1) has multiple functional areas formed by different convex and concave surfaces, and the depths of the convex and concave surfaces in adjacent functional areas are different.
5. The zoned support foam of claim 4, wherein, The convex and concave surfaces are formed by cutting the upper surface of the upper sponge layer (1), and the convex and concave surfaces in adjacent functional areas have different cutting densities.
6. The zoned support foam of claim 1, wherein, The upper sponge layer (1) and the lower sponge layer (2) have different hardnesses, and after being joined in an arc shape, they form multiple functional areas with different hardnesses.
7. The zoned support foam of claim 1, wherein, The hardness of the lower sponge layer (2) is greater than that of the upper sponge layer (1).
8. The zoned support foam of claim 1, wherein, The length of the supporting sponge layer (3) is 200-400mm and the thickness is 15-20mm.
9. The zoned support foam of claim 1, wherein, The upper sponge layer (1) and the lower sponge layer (2) together form a first end face near the head of the bed, and the distance between the supporting sponge layer (3) and the first end face is 500-700mm.
10. The partitioned spinal support sponge core according to claim 1, characterized in that, The overall thickness of the partitioned spinal support sponge core is 50-150mm.