Adaptive hip back side leaning structure of seat and back integrated cushion
By setting a self-fluidizing hip pad in the concave space of the curved part of the integrated seat and back cushion, the fluid filling material achieves adaptive fit to the back of the buttocks, solving the problem of fit between the buttocks and the curved part, and improving the comfort and support of sitting and backing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SHUNYOU INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-14
AI Technical Summary
The existing integrated seat and backrest cushions have a concave hollow area between the back of the buttocks and the curved part, which cannot effectively conform to the human body with different buttock shapes, resulting in lower back discomfort and decreased comfort when sitting for a long time.
A self-fluidizing buttock pad is placed in the concave space of the curved part. Using fluid filling materials such as pearl cotton particles, liquid gel or gas, it adapts to deformation by the compression of the human buttocks to achieve a perfect fit to the back of the buttocks, and provides all-round support in conjunction with the backrest.
The integrated seat and backrest cushion enhances comfort, adapts to different hip shapes, provides effective support for the lower back and hips, and improves the experience of sitting for long periods.
Smart Images

Figure CN224483420U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of integrated seat and back cushion technology, and in particular to an adaptive backrest structure for an integrated seat and back cushion. Background Technology
[0002] Seat cushions are an indispensable item in our daily lives. With the widespread use of computers, more and more office workers need to sit in front of computers for long periods of time. Prolonged sitting not only causes fatigue but can also damage the spine, lumbar vertebrae, and sciatic nerve, and in severe cases, even lead to health problems such as hemorrhoids and prostate issues. Ordinary seat cushions usually have a simple structure and lack lumbar support, failing to effectively alleviate these discomforts.
[0003] To better provide functions such as lumbar support, waist slimming and hip shaping, posture correction, and body shaping, and to conform to ergonomics, allowing people to experience a better sitting experience during long periods of office work, a very popular integrated seat and back cushion has been launched on the market, especially welcomed by office workers. Existing integrated seat and back cushions have a structure whose curves closely conform to the human body's curves, generally including a backrest, a base, and a curved section between the backrest and the base. The curvature of this curved section is quite large, resulting in a concave hollow area between the buttocks and the curved section when a person sits on the cushion. There is no support point between the two, and the body can only rely on the backrest for lumbar support. After sitting for a long time, the lower back will feel tired, affecting comfort. Therefore, I have previously applied for a Chinese utility model patent with application number 202520507012.7, entitled "An Integrated Seat and Back Cushion with a Buttock Support Structure." In this solution, a buttock support element is set in the aforementioned hollow area to provide support for the back of the buttocks, effectively solving the above-mentioned pain points. However, in practical applications, I have found that the buttock support piece can only be molded to approximate the contour of the back of most human buttocks, but it cannot guarantee a perfect match with the back of everyone's buttocks. Therefore, the above structure needs to be improved again. Utility Model Content
[0004] To address the aforementioned issues, this invention proposes an adaptive backrest structure for an integrated seat and backrest cushion.
[0005] The technical solution adopted by this utility model is: an adaptive backrest support structure for an integrated seat and back cushion. The integrated seat and back cushion includes a seat body, which includes a backrest portion, a base portion, and a curved portion disposed between the backrest portion and the base portion. A concave space is formed on the curved portion. The adaptive backrest support structure includes a self-fluidizing buttock pad installed on the concave space. The self-fluidizing buttock pad includes an outer layer and a fluid filling material disposed inside the outer layer. The outer layer has an inner surface fixed on the curved portion and an outer surface opposite to the inner surface. The self-fluidizing buttock pad has a backrest state. In the backrest state, the fluid filling material adaptively deforms based on the backrest compression of the human buttocks, and makes the contour of the outer surface consistent with the contour of the human buttocks.
[0006] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.
[0007] Preferably, the fluid filler is pearl cotton particles.
[0008] Preferably, the fluid filler is a liquid gel.
[0009] Preferably, the fluid filler is gas, and the self-fluidizing buttock pad is an air bladder.
[0010] Preferably, the inner surface is detachably mounted on the curved portion.
[0011] Preferably, the curved portion has a hook and loop fastener on the side surface near the concave space, and the inner surface has a hook and loop fastener on the side surface. The hook and loop fastener are bonded together accordingly.
[0012] Preferably, the hook and loop fastener is attached to the curved portion via the adhesive side.
[0013] Preferably, the curved portion has at least one slot on one side surface near the concave space, and at least one insert block is provided on the inner surface, the insert block being matched and snapped into the slot.
[0014] Preferably, the inner surface is made of a hard material, the outer surface is made of a soft material, and the insert block and the inner surface are integrally formed.
[0015] More preferably, the bottom of the slot and the end of the insert are both provided with magnetic blocks for magnetic attraction and fixation.
[0016] Compared with the prior art, this utility model has the following beneficial effects:
[0017] By incorporating a self-fluidizing hip cushion within the concave space of the curved section, when a person sits on the integrated seat and backrest cushion, the back of the buttocks compresses the self-fluidizing hip cushion. The self-fluidizing hip cushion adapts to the contour of the back of the buttocks, providing support and achieving a perfect fit with the back of the buttocks of people with different buttock shapes. The self-fluidizing hip cushion and backrest work together to provide comprehensive support for the back, waist, and buttocks, effectively improving the comfort of sitting on the integrated seat and backrest cushion and making it highly practical. Attached Figure Description
[0018] 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 the structures shown in these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of a human body sitting on an integrated seat and back cushion according to one embodiment of this application;
[0020] Figure 2 This is a schematic diagram showing the contour changes of the self-fluidizing buttock cushion before and after a human body sits on the integrated seat and back cushion in one embodiment of this application.
[0021] Figure 3 This is a schematic diagram of a structure in one embodiment of the present application, in which a self-fluidizing hip pad is installed on an integrated seat and back cushion using Velcro.
[0022] Figure 4 This is a schematic diagram of the structure in one embodiment of the present application, showing the self-fluidizing buttock pad being detached from the integrated seat and back cushion;
[0023] Figure 5 for Figure 4 A schematic diagram of the inner surface of the self-fluidizing buttock pad;
[0024] Figure 6 This is a schematic diagram of a seat and back cushion with slots provided in one embodiment of this application;
[0025] Figure 7 for Figure 6 A schematic diagram of the inner surface of the self-fluidizing buttock pad;
[0026] Figure 8 This is a cross-sectional schematic diagram of a self-fluidizing buttock pad in one embodiment of this application.
[0027] The attached diagram is labeled as follows: 1-integrated seat and backrest cushion, 11-backrest, 12-base, 13-bend, 131-hook and loop fastener, 132-slot, 2-self-fluidizing buttock cushion, 21-outer layer, 22-pearl cotton particles, 23-fitting surface, 3-hook and loop fastener, 4-insertion block, 5-human buttocks.
[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0029] 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.
[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0031] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0032] Detailed implementation plan: See below Figures 1-8This utility model is an adaptive backrest support structure for an integrated seat cushion 1. The integrated seat cushion 1 includes a seat body, which includes a backrest portion 11, a base portion 12, and a curved portion 13 disposed between the backrest portion 11 and the base portion 12. A concave space is formed on the curved portion 13. The adaptive backrest support structure includes a self-fluidizing buttock pad 2 installed on the concave space. The self-fluidizing buttock pad 2 includes an outer layer 21 and a fluid filling material disposed inside the outer layer 21. The outer layer 21 has an inner surface fixed on the curved portion 13 and an outer surface opposite to the inner surface. The self-fluidizing buttock pad 2 is in a backrest state. In the backrest state, the fluid filling material adaptively deforms based on the backrest compression of the human buttock 5, and makes the contour of the outer surface consistent with the contour of the human buttock 5.
[0033] As a preferred embodiment of this example, please refer to Figure 8 As can be seen, the fluid filler is pearl cotton particles 22.
[0034] Here, there are gaps between the pearl cotton particles 22. Please refer to [link / reference]. Figure 1 and Figure 2 When the back of the human buttocks 5 rests against the self-fluidizing buttock pad 2, the pearl cotton particles 22 inside the outer layer 21 will flow, so that the outer surface of the outer layer 21 presents the same contour as the back of the human buttocks 5, perfectly fitting the back of the human buttocks 5, providing a good wrapping experience and high sitting comfort.
[0035] In other embodiments, the flowable filler may be a liquid gel or a gas.
[0036] Liquid gels are soft materials that fall between liquids and solids. They form a three-dimensional network structure through polymer cross-linking, which can encapsulate a large amount of liquid and maintain a certain shape.
[0037] When the fluid filler is gas, the self-fluidizing buttock pad 2 is equivalent to an air bladder. In this case, the outer layer 21 needs to have a certain thickness and elasticity to ensure that the self-fluidizing buttock pad 2 has high pressure resistance during the human body's compression of the self-fluidizing buttock pad 2, and that the outer layer 21 will not be damaged when it encounters foreign objects, such as sharp objects touching and squeezing it.
[0038] Of course, other materials with fluid properties can also be used as flowable fillers, which will not be discussed in detail here. As described above, flowable fillers can be solid particles, liquids, or gases, depending on the specific requirements.
[0039] Next, to allow users to choose whether or not to install the self-fluidizing hip pad 2, in this embodiment, the inner surface is detachably mounted on the curved part 13.
[0040] Regarding the connection between the self-fluidizing hip pad 2 and the curved part 13, various structures such as Velcro, buckles, pins, locks, and straps can be used. Here, we will briefly explain the two installation methods: Velcro and pins.
[0041] Velcro: Please refer to Figures 3-5 As can be seen, the curved part 13 has a hook and loop fastener 131 on one side surface near the concave space, and a hook and loop fastener 3 on the inner surface. The hook and loop fastener 131 and the hook and loop fastener 3 are bonded together.
[0042] Furthermore, in this embodiment, the hook side 131 is attached to the curved portion 13 via the adhesive side.
[0043] When it is necessary to install the hook and loop fastener 131 on the curved part 13, peel off the release film on the back of the hook and loop fastener 131 to expose the adhesive surface, and then the hook and loop fastener 131 can be glued and fixed to the curved part 13.
[0044] Pin: Please refer to Figures 3-5 The curved portion 13 has at least one slot 132 on one side surface near the concave space, and at least one insert 4 on the inner surface, the insert 4 being matched and snapped into the slot 132.
[0045] In addition, in this embodiment, the inner surface is made of a hard material and the outer surface is made of a soft material, and the insert 4 and the inner surface are integrally formed.
[0046] In this embodiment, there are two slots 132 on the curved portion 13 and two slots 132 on the inner surface. When the insert 4 is inserted into the slot 132, an interference fit can generally be used to ensure a firm connection between the self-fluidizing hip pad 2 and the seat-back cushion 1.
[0047] More specifically, when the insert 4 and the slot 132 are not interference-fitted, magnetic blocks for magnetic attraction and fixation can be provided at the bottom of the slot 132 and the end of the insert 4, thereby ensuring a firm connection between the self-flowing hip pad 2 and the integrated seat cushion 1.
[0048] In addition, when using straps to connect the self-fluidizing buttock pad 2 and the integrated seat and back cushion 1, the straps are fixed on one side of the self-fluidizing buttock pad 2. The straps can be tied or looped onto the integrated seat and back cushion 1 to fix the self-fluidizing buttock pad 2.
[0049] The adaptive backrest structure of the integrated seat cushion of this utility model is described above only as a preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. All equivalent structural transformations made under the inventive concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.
Claims
1. An adaptive backrest structure for an integrated seat and backrest cushion, the integrated seat and backrest cushion comprising a seat cushion body, the seat cushion body comprising a backrest portion, a base portion, and a curved portion disposed between the backrest portion and the base portion, the curved portion having a concave space formed therein, characterized in that, The adaptive posterior hip support structure includes a self-fluidizing hip pad mounted on the concave space. The self-fluidizing hip pad includes an outer layer and a fluid filler disposed inside the outer layer. The outer layer has an inner surface fixed to the curved portion and an outer surface opposite to the inner surface. The self-fluidizing hip pad has a support state. In the support state, the fluid filler adaptively deforms based on the support compression of the posterior hip of the human body, and makes the contour of the outer surface consistent with the contour of the posterior hip of the human body.
2. The adaptive buttock-supporting structure of the integrated seat and back cushion according to claim 1, characterized in that, The fluid filler is pearl cotton particles.
3. The adaptive buttock-supporting structure of the integrated seat and back cushion according to claim 1, characterized in that, The fluid filler is a liquid gel.
4. The adaptive buttock-supporting structure of the integrated seat and back cushion according to claim 1, characterized in that, The fluid filler is gas, and the self-fluidizing buttock pad is an air bladder.
5. The adaptive buttock-supporting structure of an integrated seat and back cushion according to any one of claims 1-4, characterized in that, The inner surface is detachably mounted on the curved portion.
6. The adaptive buttock-supporting structure of the integrated seat and back cushion according to claim 5, characterized in that, The curved portion has a hook and loop fastener on the side surface near the concave space, and the inner surface has a hook and loop fastener on the side surface. The hook and loop fastener are bonded together.
7. The adaptive buttock-supporting structure of a seat-back integrated cushion according to claim 6, characterized in that, The hook and loop fastener is attached to the curved portion via the adhesive side.
8. The adaptive buttock-supporting structure of a seat-back integrated cushion according to claim 5, characterized in that, The curved portion has at least one slot on one side surface near the recessed space, and at least one insert is provided on the inner surface, the insert being matched and snapped into the slot.
9. The adaptive buttock-supporting structure of a seat-back integrated cushion according to claim 8, characterized in that, The inner surface is made of a hard material, the outer surface is made of a soft material, and the insert and the inner surface are integrally formed.
10. The adaptive buttock-supporting structure of a seat-back integrated cushion according to claim 8, characterized in that, The bottom of the slot and the end of the insert are both provided with magnetic blocks for magnetic attraction and fixation.