Spine-protecting self-adaptive spring mattress and mattress hardness testing method

Abstract

The invention discloses a spine-protecting self-adaptive spring mattress and a mattress hardness testing method. The mattress comprises a bed periphery, and the bed periphery is sequentially provided with a self-adaptive spring bed core, a multifunctional composite bedding layer and a fabric composite layer from inside to outside; wherein the self-adaptive spring bed core is composed of a plurality of multi-layer nested elastomer units; the multifunctional composite bedding layer sequentially comprises a super-soft moisture absorption and pressure relief layer, a super-soft moisture absorption and pressure relief layer and a ventilation stable supporting layer from top to bottom; the fabric composite layer sequentially comprises an antibacterial anti-mite fabric layer, a silky fiber layer and a super-soft sponge layer from top to bottom. The spine-protecting self-adaptive spring mattress has the functions of supporting performance, temperature and humidity adjusting capacity, antibacterial protection, adaptive characteristics and the like at the same time, a high-quality sleep environment is provided for a user, meanwhile, the mattress is tested through a mattress hardness testing method, the design effect of the mattress is further improved, and the spine-protecting self-adaptive spring mattress is suitable for popularization and application. And the sleep environment of the user is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture products, and particularly to a spinal protection adaptive spring mattress and a method for testing the softness and hardness of the mattress. Background Art

[0002] With the continuous improvement of social attention to children's health and growth, sleep, as an important guarantee for children's health, has become a key concern area for parents and the industry. As the core component of the sleep environment, the structure and material design of the mattress have a direct and profound impact on children's physical and mental development. However, currently, the children's mattress products on the market generally have limitations in design and are difficult to fully meet the changing sleep needs of children during their growth process.

[0003] Currently, most children's mattresses on the market adopt traditional spring designs, which can provide basic support but cannot dynamically adapt to the physical characteristics of children at different growth stages. At the same time, common adult-zoned mattresses mostly adopt a physically fixed zoning design, which is difficult to adjust with the rapid growth of children's height, resulting in a mismatch between the support area and the children's body parts. A child's spine is in the developmental stage during growth, with a relatively high cartilage content and is extremely vulnerable to deformation under external pressure. If the mattress support design is not scientific, it will not only cause discomfort to children during sleep, affecting their sleep quality, but may even induce scoliosis after long-term use. Scoliosis has a great impact on children's physical and mental health, so scientific and reasonable mattress support is particularly important.

[0004] In addition, during sleep, the human body emits heat and moisture through breathing and the body surface. Approximately one-third is emitted through breathing, and two-thirds through the body surface, and the mattress absorbs about 25% of the body surface heat and moisture. Since children generally have a higher metabolism and their thermoregulation ability has not yet fully developed, they are prone to overheating or overcooling during sleep, which affects sleep quality. Therefore, children's demand for the temperature and humidity regulation function of the mattress is significantly higher than that of adults. Traditional mattress materials and structures often perform poorly in terms of breathability, antibacterial properties, and humidity management, easily leading to the growth of moisture and bacteria, thereby causing health problems such as skin allergies. Therefore, how to design a mattress with functions such as support performance, temperature and humidity regulation ability, antibacterial protection, and adaptability characteristics to meet the usage needs of user groups such as children is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] Embodiments of the present invention provide a spinal protection adaptive spring mattress and a method for testing the softness and hardness of the mattress, aiming to design a mattress with functions such as support performance, temperature and humidity regulation ability, antibacterial protection, and adaptability characteristics.

[0006] An embodiment of the present invention provides a spinal protection adaptive spring mattress, including a bed perimeter edge, and an adaptive spring mattress core, a multifunctional composite padding layer, and a fabric composite layer are sequentially arranged from inside to outside on the bed perimeter edge;

[0007] Among them, the adaptive spring mattress core is composed of a plurality of multi-layer nested elastomeric units;

[0008] The multifunctional composite padding layer sequentially includes a super soft moisture-absorbing pressure-relieving layer, a super soft moisture-absorbing pressure-relieving layer, and a ventilation and stable support layer from top to bottom;

[0009] The fabric composite layer sequentially includes an antibacterial and mite-proof fabric layer, a smooth fiber layer, and a super soft sponge layer from top to bottom.

[0010] Preferably, a plurality of the multi-layer nested elastomeric units are arranged in a regular pattern, and each of the multi-layer nested elastomeric units is fixed to each other by a high-strength hot melt adhesive technology.

[0011] Preferably, each of the multi-layer nested elastomeric units includes an outer flexible support spring and an inner enhanced support spring nested inside the outer flexible support spring. The elastic deformation ability of the outer flexible support spring is greater than that of the inner enhanced support spring, and the stiffness of the outer flexible support spring is less than that of the inner enhanced support spring.

[0012] Preferably, the spring diameter of the outer flexible support spring is 1.5-2 times that of the inner enhanced support spring, the spring length diameter of the outer flexible support spring is 1.2-1.5 times that of the inner enhanced support spring, and the initial stiffness of the inner enhanced support spring is 2-3 times that of the outer flexible support spring.

[0013] Preferably, the super soft moisture-absorbing pressure-relieving layer is made of an improved non-temperature-sensitive memory foam material, and the thickness of the super soft moisture-absorbing pressure-relieving layer is 1-3 cm.

[0014] Preferably, the super soft moisture-absorbing pressure-relieving layer is made of any one or more of open-cell breathable high-elastic sponge, air fiber, or breathable suspension core, and the thickness of the super soft moisture-absorbing pressure-relieving layer is 1-2 cm.

[0015] Preferably, the ventilation and stable support layer is made of high-density latex and / or foam material, and regularly distributed ventilation holes are arranged in the ventilation and stable support layer. The thickness of the ventilation and stable support layer is 1-2.5 cm.

[0016] Preferably, the thickness of the multifunctional composite padding layer 2 is 3-6 cm, and the hardness of the super soft moisture-absorbing pressure-relieving layer, the super soft moisture-absorbing pressure-relieving layer, and the ventilation and stable support layer increases layer by layer.

[0017] Preferably, the thickness of the fabric composite layer is 1.5 - 3.5 cm.

[0018] Preferably, the overall surface hardness of the fabric composite layer and the multi-functional composite cushion layer is greater than 7 N.

[0019] The embodiment of the present invention also provides a method for testing the softness and hardness of a mattress, including:

[0020] Obtain a mattress sample to be tested, and perform thickness pre-compression treatment on the mattress sample;

[0021] Use a testing device equipped with an indenter to compress the mattress sample at a non-linear loading rate to be tested, and stop when the thickness of the mattress sample is compressed to a preset thickness, and then record the unloading characteristics during the unloading process of the indenter;

[0022] Based on the unloading characteristics, obtain the pressure values when the indenter displacement reaches different thickness characteristic values, and combine the indenter displacement to set the pressure values as sectional hardness characteristic values;

[0023] Based on the sectional hardness characteristic values, perform layer-by-layer hardness performance analysis on the mattress sample, and use the result of the layer-by-layer hardness performance analysis as the softness and hardness test result of the mattress sample.

[0024] Preferably, it further includes:

[0025] Obtain the time lag characteristic of the pressure recovery during the compression and unloading process of the mattress sample at the head of the bed;

[0026] Calculate the recovery coefficient according to the time lag characteristic;

[0027] Use the recovery coefficient to quantify the elastic performance and support stability of the mattress sample during dynamic use.

[0028] The embodiment of the present invention provides a spinal protection adaptive spring mattress and a method for testing the softness and hardness of the mattress. The spinal protection adaptive spring mattress is provided with an adaptive spring core, a multi-functional composite cushion layer and a fabric composite layer. Through the adaptive spring core, the multi-functional composite cushion layer and the fabric composite layer, the support performance, temperature and humidity adjustment ability, antibacterial protection and adaptive design can be comprehensively optimized, thereby improving the user's sleep experience. At the same time, the embodiment of the present invention tests the mattress through the method for testing the softness and hardness of the mattress, and then makes feedback adjustment on the mattress according to the test result, so as to further improve the use effect of the mattress. Description of the Drawings

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic diagram of the overall appearance of a spinal protection adaptive spring mattress provided by an embodiment of the present invention.

[0031] Figure 2 It is a schematic diagram of the hierarchical structure of a spinal protection adaptive spring mattress provided by an embodiment of the present invention.

[0032] Figure 3 It is a schematic diagram of the cross-sectional structure of a spinal protection adaptive spring mattress provided by an embodiment of the present invention.

[0033] Figure 4 It is a schematic diagram of the force deformation of a multi-layer nested elastic body unit in a spinal protection adaptive spring mattress provided by an embodiment of the present invention.

[0034] Figure 5 It is a schematic diagram of the usage state of a spinal protection adaptive spring mattress provided for an embodiment when used by children of different growth stages and body types in the supine sleeping position.

[0035] Figure 6 It is a schematic diagram of the usage state of a spinal protection adaptive spring mattress provided for an embodiment when used by children of different growth stages and body types in the lateral sleeping position;

[0036] Figure 7 It is a schematic diagram of the flow of a method for testing the softness and hardness of a mattress provided by an embodiment of the present invention.

[0037] Identifications in the figure:

[0038] 1. Fabric composite layer; C11. Antibacterial and mite-proof fabric layer; C12. Smooth fiber layer; C13. Ultra-soft sponge layer; 2. Multifunctional composite padding layer; C21. Ultra-soft moisture-absorbing and pressure-relieving layer; C22. Ultra-soft moisture-absorbing and pressure-relieving layer; C23. Ventilation and stable support layer; 3. Adaptive spring bed core; 4. Bed perimeter. Detailed implementation manners

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0040] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their combinations.

[0041] It should also be understood that the terms used in this specification of the present invention are merely for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in this specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0042] It should be further understood that the term " / and" used in this specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0043] Please refer to the following Figures 1 to 3 , an embodiment of the present invention provides a spinal protection adaptive spring mattress, including a bed perimeter 4, and the bed perimeter 4 is sequentially provided with an adaptive spring mattress core 3, a multi-functional composite cushion layer 2 and a fabric composite layer 1 from inside to outside;

[0044] Among them, the adaptive spring mattress core 3 is composed of a plurality of multi-layer nested elastic body units;

[0045] The multi-functional composite cushion layer 2 sequentially includes a super soft moisture-absorbing and pressure-relieving layer C21, a super soft moisture-absorbing and pressure-relieving layer C22 and a ventilation and stable support layer C23 from top to bottom;

[0046] The fabric composite layer 1 sequentially includes an antibacterial and mite-proof fabric layer C11, a smooth fiber layer C12 and a super soft sponge layer C13 from top to bottom.

[0047] In this embodiment, the spinal protection adaptive spring mattress is provided with an adaptive spring mattress core 3, a multi-functional composite cushion layer 2 and a fabric composite layer 1. Through the adaptive spring mattress core 3, the multi-functional composite cushion layer 2 and the fabric composite layer 1, it can be comprehensively optimized in terms of support performance, temperature and humidity regulation ability, antibacterial protection and adaptive design, so as to improve the user's sleep experience. Moreover, the spinal protection adaptive spring mattress described in this embodiment is particularly suitable for the children's group. Based on the functional characteristics of the spinal protection adaptive spring mattress, it can fully meet the changing sleep needs of children during the growth process.

[0048] In one embodiment, a plurality of the multi-layer nested elastic body units are arranged in a regular pattern, and each of the multi-layer nested elastic body units is fixed to each other by a high-strength hot melt adhesive technology.

[0049] Furthermore, each of the multi-layer nested elastomeric units includes an outer flexible support spring and an inner reinforcing support spring nested inside the outer flexible support spring. The elastic deformation ability of the outer flexible support spring is greater than that of the inner reinforcing support spring, and the stiffness of the outer flexible support spring is less than that of the inner reinforcing support spring.

[0050] Specifically, the spring diameter of the outer flexible support spring is 1.5 - 2 times that of the inner reinforcing support spring, the spring length diameter of the outer flexible support spring is 1.2 - 1.5 times that of the inner reinforcing support spring, and the initial stiffness of the inner reinforcing support spring is 2 - 3 times that of the outer flexible support spring.

[0051] In this embodiment, the adaptive spring mattress core 3 realizes the hierarchical support function of the mattress core under different load conditions by optimizing the spring structure and arrangement method, so as to better meet the needs of children for spinal support and comfort during sleep. Combining Figure 4 , the specific structural design is as follows:

[0052] (1) Overall structure: The adaptive spring mattress core 3 is composed of a number of multi-layer nested elastomeric units arranged in a straight row or regularly. Each elastic unit is fixed to each other by high-strength hot melt adhesive technology to form an overall stable support structure.

[0053] (2) Multi-layer nested elastomeric unit: Each elastic unit is composed of a double-layer nested independent spring system wrapped in a non-woven bag, with high elasticity, independence and hierarchical deformation characteristics. The double-layer nested independent spring system specifically includes an outer flexible support spring and an inner reinforcing support spring. Among them, the outer flexible support spring adopts an improved large-diameter flexible cylindrical spring, which has a large elastic deformation ability and a low initial stiffness. And through a reasonable design of the aspect ratio (such as 1.3 - 2.0 times), the outer flexible support spring can provide comfortable soft support under low loads, while effectively dispersing pressure and adapting to the changes in children's sleeping postures; the inner reinforcing support spring is nested inside the outer flexible support spring and adopts a small-diameter (such as 1.3 - 2.0 times) high-strength cylindrical spring, which has a higher stiffness and a shorter deformation stroke. After the outer flexible support spring reaches the critical deformation, the inner reinforcing support spring starts to intervene and work, providing additional support force to prevent excessive deformation and realizing progressive hierarchical support.

[0054] (3) Hierarchical Nonlinear Support Mechanism: The outer flexible support spring bears pressure independently under low load conditions, providing excellent comfort through its soft characteristics. As the load gradually increases, the inner enhanced support spring gradually intervenes, and the dynamic adjustment of the support strength is achieved through the coordinated deformation of the inner and outer layers. This nonlinear support mechanism can be automatically adjusted according to different body weights and pressure distributions, thus achieving a progressive support from soft to firm, adapting to the different stage requirements of children's growth and development.

[0055] Preferably, the outer flexible support spring can be made of high-elastic steel or composite metal wire. Through special treatment, the outer flexible support spring has a low initial stiffness and a high fatigue life. The inner enhanced support spring can be made of high-strength alloy material, and the surface is coated with a corrosion-resistant coating to extend the service life and ensure stable performance under high load. The non-woven bag can be made of mite-proof and antibacterial materials to improve hygiene, while enhancing the independence and noise-proof performance of the spring unit. Here, the high-elastic steel can specifically be AISI music wire (ASTMA228), a high-strength steel suitable for spring manufacturing, and has a high fatigue strength and elastic modulus. Or it can be steel of the type SAE 1074 / 1075. These types of steel have a relatively high carbon content and are suitable for making high-elastic springs, suitable for elastic applications with higher requirements. Composite metal wire is usually based on other metals, plus coatings or other metals to improve performance. Common composite metal wires and combinations include stainless steel and carbon steel composite wire, titanium alloy and steel composite wire, and nickel-titanium alloy. Among them, in the combination of stainless steel and carbon steel composite wire, stainless steel provides corrosion resistance, while the strength and elasticity of carbon steel enhance the spring performance. In the combination of titanium alloy and steel composite wire, the combination of the light weight and strength of titanium alloy can improve the spring performance. Nickel-titanium alloy is an alloy with a memory effect and is used in spring systems with some special requirements. In addition, the special treatment refers to special treatment processes, including: quenching and tempering. By heating to a certain temperature and then rapidly cooling (quenching), and then heating to a temperature below the critical point and holding for a certain time (tempering), the hardness and toughness of the material can be improved; annealing, which can effectively reduce the internal stress of the material and improve plasticity and workability, and is usually used to improve the process performance of subsequent processes; electroplating, plating a layer of other metal (such as nickel or zinc) on the metal surface to enhance corrosion resistance and appearance performance; coating, using polymer materials to coat the spring to improve wear resistance and anti-implantation; nitriding treatment, by heating the metal in a nitrogen atmosphere to form a hard and brittle nitride layer to enhance wear resistance and corrosion resistance; microstructure optimization, by controlling the refinement or grain size of the material to improve the comprehensive performance of the material.

[0056] The diameter of the outer flexible support spring is preferably 1.5 - 2 times that of the inner reinforced support spring, and the length is 1.2 - 1.5 times that of the inner reinforced support spring; the initial stiffness of the inner reinforced support spring is preferably 2 - 3 times that of the outer flexible support spring. Through the above differential size and stiffness design, the cooperative work and progressive deformation of the spring units can be achieved.

[0057] Although the spring units are arranged regularly in a straight row, that is, each spring unit (or spring) is closely arranged in a straight line to form a series of vertical or horizontal rows, elastic gradient adjustment can also be carried out according to the functional requirements of the mattress zoning, and different zones can form differential supports adapted to the heads, backs and legs of children by adjusting the spring unit density, diameter and stiffness.

[0058] In one embodiment, the ultra-soft moisture-absorbing and pressure-relieving layer C21 is made of an improved non-temperature-sensitive memory foam material, and the thickness of the ultra-soft moisture-absorbing and pressure-relieving layer C21 is 1 - 3 cm.

[0059] The ultra-soft moisture-absorbing and pressure-relieving layer C22 is made of any one or more of open-cell breathable high-elastic foam, air fiber, or breathable suspension core, and the thickness of the ultra-soft moisture-absorbing and pressure-relieving layer C22 is 1 - 2 cm.

[0060] The ventilation and stable support layer C23 is made of high-density latex and / or foam material, and regularly distributed ventilation holes are provided in the ventilation and stable support layer C23, and the thickness of the ventilation and stable support layer C23 is 1 - 2.5 cm.

[0061] In addition, the thickness of the multifunctional composite bedding layer 2 is 3 - 6 cm, and the hardness of the ultra-soft moisture-absorbing and pressure-relieving layer C21, the ultra-soft moisture-absorbing and pressure-relieving layer C22 and the ventilation and stable support layer C23 increases layer by layer.

[0062] In this embodiment, the multifunctional composite bedding layer 2 is laid above the adaptive spring mattress core 3 and is composed of multiple layers of independent materials stacked together, specifically including the following parts:

[0063] (1) Ultra-soft moisture-absorbing and pressure-relieving layer C21: The thickness is controlled at 1 - 3 cm and is made of an improved non-temperature-sensitive memory foam material, which can provide excellent softness and compression resilience performance and avoid hardness fluctuations caused by environmental temperature changes; at the same time, the ultra-soft moisture-absorbing and pressure-relieving layer C21 also has high moisture absorption characteristics, can effectively adjust the body surface humidity, and prevent discomfort and health problems caused by moisture accumulation. Here, the improved non-temperature-sensitive memory foam material is a relatively new material, aiming to retain the advantages of memory foam (such as high comfort and support), while overcoming the disadvantage that traditional temperature-sensitive memory foam becomes too soft at high temperatures. For example Materials that combine memory foam and gel components to provide support and cooling effects for users. For example, the Serta iComfort series mattresses use open-cell memory foam to enhance breathability and durability. Another example is Hybrid Foam, which combines different types of foams (such as memory foam and high-resilience foam) to achieve a non-temperature-sensitive effect and enhance support. Purple Mattress: It uses a mesh polymer structure combined with memory foam to provide support while keeping cool. Of course, in actual applications, improved non-temperature-sensitive memory foam materials can also be obtained through process design. The specific process flow can include: ① Adding Phase Change Materials (PCM), embedding the phase change materials into the memory foam, which helps absorb or release heat when the temperature changes and keeps the temperature stable. ② Uniformly distributing gel particles in the memory foam during the foaming process can effectively disperse and transfer heat, thereby reducing the temperature sensitivity of the foam. ③ Using special manufacturing techniques during the foaming process to form more open cells in the structure of the foam, which helps air circulation and reduces temperature accumulation. Thus, improved non-temperature-sensitive memory foam materials can be obtained.

[0064] (2) Ultra-soft moisture-absorbing and pressure-relieving layer C22: Select highly elastic materials such as open-cell breathable high-resilience foam, air fiber, or breathable floating core, with a thickness controlled within 1 - 2.0 cm, to provide uniform support for the child's body and optimize heat and moisture dissipation through high breathability design to keep the sleep environment dry and comfortable.

[0065] (3) Ventilation and stability support layer C23: Use any one or a combination of high-density latex, foam materials, or other materials with excellent support performance. For example, when using high-density latex, the density should be higher than 70 kg / m 3 . The thickness of the ventilation and stability support layer C23 is controlled within 1 - 2.5 cm; and, regularly distributed ventilation holes are provided in the ventilation and stability support layer C23 to improve air circulation while ensuring the stability and durability of the overall structure. Specifically, the diameter of the ventilation holes is 0.3 - 1.0 cm, and they are arranged in a regular straight-line pattern with a spacing of no more than 5.0 cm.

[0066] The multifunctional composite padding layer 2 is formed by stacking the above-mentioned multi-layer independent materials. The thickness of the multifunctional composite padding layer 2 should be between 3 and 6 cm, and the hardness of each layer gradually increases and shows a gradual change distribution.

[0067] In one embodiment, the thickness of the fabric composite layer 1 is 1.5 - 3.5 cm.

[0068] The fabric composite layer 1 is composed of antibacterial / anti-mite fabric, silky fiber, super soft sponge and non-woven fabric, so that the fabric composite layer 1 has functions such as antibacterial, anti-mite and moisture-proof, while providing a soft touch and breathability to protect the skin health of children. The total thickness of the fabric composite layer 1 is controlled within 1.5 - 3.5 cm. Among them, the thickness of the silky fiber is 0.5 - 1.0 cm, and the thickness of the super soft sponge is 1.0 - 2.5 cm. Here, antibacterial and anti-mite fabrics usually use fibers added with antibacterial agents and anti-mite agents. For example, polyester fiber (such as Tencel TM LT), and this material can achieve antibacterial properties by adding antibacterial agents. Another example is nano silver antibacterial fabric, that is, nano silver particles are embedded in the fabric to inhibit bacteria and prevent the growth of mites. Silky fiber usually refers to synthetic fiber with a smooth surface, such as polyester fiber, etc. Polyester fiber is a synthetic fiber, usually filled in the form of staple fiber or filament, with a soft and light hand feeling, not easy to deform, and has good breathability and warmth retention. Silky fiber can be made from polyester resin obtained by polyester polymerization reaction, through processes such as spinning and heat setting to form a filling material. Through processing, a smooth surface can be manufactured to make it softer in touch. Super soft sponge is a high-elastic and soft foam material, such as common low-density polyurethane foam, etc.

[0069] In one embodiment, the overall surface hardness of the fabric composite layer 1 and the multi-functional composite bedding layer 2 is greater than 7N. This design ensures the support force and durability of the mattress surface, can effectively resist the pressure brought by children's activities during daily use, and at the same time maintain the overall shape and comfort of the mattress. Further, the fabric composite layer 1 and the multi-functional composite bedding layer 2 can be bonded by a special adhesive to ensure the tight combination between layers, avoid delamination or displacement during use, and thus extend the service life of the mattress.

[0070] In addition, the edge part of the mattress, that is, the bed perimeter 4, adopts a reinforcement design to enhance the support of the mattress edge and prevent the deformation of the mattress caused by sitting or lying on the edge of the mattress for a long time. The bed perimeter 4 can also be made of breathable and soft materials to ensure comfort during use. The bottom of the mattress is provided with an anti-slip bottom cloth, made of a material with a high friction coefficient, which effectively prevents the mattress from sliding and ensures the safety of use. The material of the bottom cloth is usually environmentally friendly rubber or anti-slip fiber, which is both environmentally friendly and durable, and further improves the overall stability of the mattress. The mattress can also be equipped with a detachable and washable outer cover, designed with a zipper for easy disassembly and cleaning to keep the mattress hygienic. The material of the outer cover is selected as a skin-friendly fabric to increase comfort. The overall design of the mattress conforms to ergonomics, provides uniform support, effectively disperses the body pressure, promotes blood circulation, reduces the number of turnovers, and improves the sleep quality.

[0071] In some actual application scenarios, sleep monitoring sensors can also be set on the mattress to monitor the user's sleep state in real time, such as key indicators like heart rate, breathing rate, and the number of turns. These data are sent to the user's smart device through the built-in wireless transmission module, enabling the user to understand their sleep quality at any time and adjust the mattress according to the monitored data, such as increasing elasticity or adjusting softness and hardness, etc., to obtain a more personalized sleep experience. The setting of the sleep monitoring sensors not only improves the intelligence level of the mattress but also provides a scientific and convenient sleep health management solution for users.

[0072] Furthermore, a smart temperature control system can be equipped for the spinal protection and pressure relief spring mattress. This system can automatically adjust the temperature of the mattress according to the change of the user's body temperature, thus providing a more comfortable sleep environment. Specifically, the smart temperature control system includes a temperature sensor, a controller, and a heating or cooling element. The temperature sensor is used to monitor the temperature of the mattress surface in real time, and the controller controls the working state of the heating or cooling element according to the data fed back by the sensor to keep the mattress within an appropriate temperature range. This smart temperature control system not only improves the comfort of the mattress but also helps to improve sleep quality and reduce insomnia or discomfort caused by temperature changes. In specific implementation, the smart temperature control system can be designed as a multi-layer structure, where the temperature sensor and the heating or cooling element are respectively embedded in different layers of the mattress. For example, the temperature sensor can be set in the fabric composite layer 1 to accurately sense the temperature of the contact surface between the user and the mattress; while the heating or cooling element can be set in the multi-functional composite padding layer 2 or the adaptive spring mattress core 3 to achieve the adjustment of the overall temperature of the mattress. Preferably, the smart temperature control system can also be integrated with the sleep monitoring sensors to achieve more intelligent sleep management. For example, when the sleep monitoring sensors detect that the user enters the deep sleep state, the smart temperature control system can automatically lower the temperature of the mattress to provide a more comfortable sleep environment for the user.

[0073] As Figure 7 shown, the embodiment of the present invention also provides a method for testing the softness and hardness of a mattress, which specifically includes: steps S101 to S104.

[0074] Step S101, obtain the mattress sample to be tested and perform thickness pre-compression treatment on the mattress sample;

[0075] Step S102, use a testing device equipped with a indenter to compress the mattress sample at a non-linear loading rate for the sample to be tested, and stop when the thickness of the mattress sample is compressed to a preset thickness, and then record the unloading characteristics during the unloading process of the indenter;

[0076] Step S103: Obtain the pressure values when the indenter displacement reaches different thickness characteristic values based on the unloading characteristics, and combine the indenter displacement to set the pressure values as segmented hardness characteristic values;

[0077] Step S104: Perform layer-by-layer hardness performance analysis on the mattress sample based on the segmented hardness characteristic values, and use the results of the layer-by-layer hardness performance analysis as the softness and hardness test results of the mattress sample.

[0078] In addition, the method for testing the softness and hardness of the mattress further includes:

[0079] Obtain the time-lag characteristic of the pressure recovery during the headboard compression and unloading process of the mattress sample;

[0080] Calculate the recovery coefficient according to the time-lag characteristic;

[0081] Quantify the elastic performance and support stability of the mattress sample during dynamic use by using the recovery coefficient.

[0082] In this embodiment, in order to quantitatively evaluate the softness and hardness of the mattress, a corresponding method for quantitatively testing and evaluating the softness and hardness is proposed. In particular, this method for testing the softness and hardness is especially applicable to the multifunctional composite cushion layer 2 described in this embodiment. By quantitatively evaluating the support performance of the multifunctional composite cushion layer 2, the pressure relief performance of the entire mattress can be ensured to meet the relevant requirements.

[0083] Specifically, first select the test equipment and preset the test conditions in advance. Use a non-contact dynamic pressure sensing system or a pressure-displacement comprehensive measurement device for testing. The equipment is equipped with a cylindrical indenter with a diameter of 100 mm, and the surface of the indenter needs to be coated with a low-friction coating to reduce the friction effect during compression. The bottom support platform of the testing machine is made of high-rigidity materials, such as a carbon steel bottom support platform, with a flat and smooth surface. Its size should be larger than the cross-section of the sample to be tested, 40 cm * 40 cm, to ensure uniform stress on the sample. The load measurement accuracy of the testing equipment is ±1 N, the displacement measurement accuracy is ±0.25 mm, and the time measurement accuracy is ±0.01 s to accurately record the dynamic pressure characteristics.

[0084] Before the formal test, first perform pre-compression on the sample to be tested, such as the multifunctional composite cushion layer 2 sample, with a limit of 10% of the total thickness compression, and continuously perform 2-3 compression and release operations to eliminate the interference of surface stress relaxation of the sample on the hardness measurement.

[0085] Subsequent Loading Rate and Dynamic Compression Range. The indenter of the testing device compresses the sample to be tested at a non-linear loading rate (starting at 50 mm / min and gradually increasing to 120 mm / min in the middle and later stages of compression), and simulates the change of pressure characteristics at different speeds during actual use. Stop when the sample to be tested is compressed to (70±1)% of the total thickness of the sample to be tested, and slowly release the pressure to record the unloading characteristics. Here, when the indenter is pressed down to (70±1)% of the total thickness of the sample to be tested and then stops, at this time the indenter slowly rises, and the speed also gradually decelerates from 120 mm / min to 50 mm / min, and the pressure is gradually released. During this process, record the load-displacement curve corresponding to the unloading process, which is the described unloading characteristics.

[0086] Segmented Measurement and Hardness Evaluation. Record the pressure values when the indenter displacement reaches (20±1)%, (40±1)%, and (60±1)% of the total thickness of the sample to be tested respectively. Then use the pressure value corresponding to each thickness segment as the segmented hardness characteristic value to test the hardness performance of the sample to be tested. For example, measure the hardness performance of the surface layer, core layer, and bottom layer of the multi-functional composite cushion layer 2 segment by segment, where:

[0087] Surface layer hardness range: 7N ≤ D < 17N;

[0088] Core layer hardness range: 17N ≤ D < 27N;

[0089] Bottom layer hardness range: 27N ≤ D < 37N;

[0090] The above hardness range refers to the hardness range corresponding to the better hardness performance of each layer.

[0091] Supplementary Dynamic Characteristic Parameters: In addition to the pressure-displacement relationship, it is also possible to record the time lag characteristic of pressure recovery during compression and unloading, and calculate the recovery coefficient to quantify the elastic performance and support stability of the sample to be tested during dynamic use.

[0092] After that, conduct an analysis of the test results. According to the distribution of the segmented hardness characteristic values, evaluate the gradient support performance of the material of the sample to be tested to ensure that the increasing characteristic of the hardness meets the design requirements. At the same time, combined with the pressure recovery coefficient, comprehensively evaluate the resilience and support stability of the cushion layer under long-term use conditions. It is also possible to determine whether the structure of the cushion layer meets the design specifications and quality control requirements by comparing the segmented hardness characteristics of the sample to be tested with the standard hardness range.

[0093] In summary, compared with the prior art, the spinal protection adaptive spring mattress and the mattress softness and hardness testing method provided by the embodiments of the present invention have the following beneficial effects:

[0094] (1) The nested double - loop spring design in the embodiments of the present invention precisely realizes the hierarchical non - linear progressive deformation mechanism, and has significant advantages in dynamic support adjustment, distribution adaptation, and improvement of compression resistance and durability. The flexible outer - loop spring provides initial soft support, perfectly conforming to the body curves of children, especially in the head, neck, back, and waist, avoiding excessive local pressure concentration. For example Figure 5 and Figure 6 as shown, whether in the supine sleeping position or the lateral sleeping position, there will be no situation of excessive local pressure concentration. Relatively speaking, the rigid inner - loop spring provides strong support, significantly enhancing the overall support strength and effectively preventing excessive sagging caused by body weight or movement. The stiffness difference between the inner and outer - loop springs realizes the adjustment of dynamic support strength, ensuring precise support and pressure dispersion for various parts such as the head, shoulders, back, waist, and legs. At the same time, the coordinated work of the inner and outer loops effectively shares the pressure, reduces the fatigue deformation of a single spring caused by long - term stress, significantly extends the service life of the mattress, and improves the overall sleep experience of users. This adaptive support design particularly meets the continuous needs of children during the rapid growth stage, avoiding the trouble of frequent mattress replacement.

[0095] (2) The multi - functional composite padding layer 2 proposed in the embodiments of the present invention effectively optimizes support through progressive hardness design, and cooperates with the spring layer to jointly avoid the hammock effect and the funnel effect, thereby improving the overall body coordination. The multi - functional composite padding layer 2 is composed of a super - soft moisture - absorbing and pressure - relieving layer C21, a super - soft moisture - absorbing and pressure - relieving layer C22, and a ventilation and stable support layer C23, forming a structure with a soft surface layer, a highly elastic middle layer, and a stable bottom layer. The surface layer realizes pressure relief and a sense of fitting, the middle layer optimizes body pressure dispersion and uniform support, and the bottom layer firmly bears the overall weight, effectively eliminating the "pressure fault" and the sense of "weightlessness". The balance of the elasticity and hardness of each layer of material avoids the body "sinking" or suspension caused by local deformation of the mattress, provides uniform and continuous support for children, and ensures good comfort and spinal protection. At the same time, the coordinated work of each material in the composite layer and the nested double - loop spring realizes stable support from the soft fitting of the surface layer to the bottom layer, enabling children to maintain a natural spinal curve during sleep and avoiding discomfort or incorrect sleeping postures caused by local support imbalance.

[0096] (3) The embodiments of the present invention achieve the temperature and humidity regulation function through the optimized combination of various materials, thereby providing a comfortable sleep environment for children. The non-temperature-sensitive memory foam layer (i.e., the improved non-temperature-sensitive memory foam material) has high moisture absorption performance, can effectively regulate the body surface humidity, and avoid discomfort and health problems caused by moisture accumulation. At the same time, the ultra-soft moisture-absorbing and pressure-relieving layer C22 and the ventilation and stable support layer C23 adopt an open-cell design and high-ventilation materials to construct an efficient air circulation system, timely dissipate heat and moisture, and keep the sleep environment dry and comfortable. In addition, the fabric composite layer 1 combines antibacterial and anti-mite materials, and the synergistic effect significantly reduces the risk of bacteria and mite breeding, ensuring environmental hygiene and temperature and humidity balance during long-term use.

[0097] (4) The breakthroughs in the accuracy and use adaptability of the performance test of the mattress bedding layer in the embodiments of the present invention significantly improve the performance test and quantification ability of the mattress. By using the quantitative test method for the hardness characteristics of the multi-functional composite bedding layer 2, accurate measurement of the different sectional hardnesses of the surface layer, core layer, and bottom layer is achieved, ensuring that the hardness increasing characteristics of the multi-functional composite bedding layer 2 are consistent with the design requirements. At the same time, the measurement of the dynamic pressure recovery coefficient provides a quantitative basis for the elastic performance and support stability. These measures not only verify the adaptability of the mattress in the actual use scenario, but also simulate the support and comfort performance under different body weights and pressure change conditions through the dynamic pressure-displacement comprehensive measurement device, ensuring the reliability of the product design.

[0098] The various embodiments in the specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the system disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description in the method section. It should be noted that for those of ordinary skill in the art in the technical field of the present application, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

[0099] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

Claims

1. A spine-protecting adaptive spring mattress, characterized in that: The invention comprises a bed periphery, wherein the bed periphery is provided with an adaptive spring core, a multifunctional composite cushioning layer and a fabric composite layer in sequence from the inside to the outside; Wherein, the adaptive spring bed core is composed of a plurality of multi-layer nested elastic body units; The multifunctional composite cushion layer comprises, from top to bottom, an ultra-soft moisture absorption and pressure relief layer, an ultra-soft moisture absorption and pressure relief layer, and a ventilation and stable support layer; The fabric composite layer comprises, from top to bottom, an antibacterial and anti-mite fabric layer, a silky fiber layer and an ultra-soft sponge layer.

2. The spine-protecting adaptive spring mattress according to claim 1, characterized in that: A plurality of the multi-layer nested elastic body units are arranged in a regular pattern, and each of the multi-layer nested elastic body units is fixed to each other by high-strength hot melt adhesive technology.

3. The spine-protecting adaptive spring mattress according to claim 1, characterized in that: Each of the multi-layer nested elastomer units includes an outer flexible support spring and an inner reinforced support spring nested inside the outer flexible support spring. The elastic deformation capacity of the outer flexible support spring is greater than the elastic deformation capacity of the inner reinforced support spring, and the stiffness of the outer flexible support spring is less than the stiffness of the inner reinforced support spring.

4. The spine-protecting adaptive spring mattress according to claim 3, characterized in that: The spring diameter of the outer flexible support spring is 1.5-2 times the spring diameter of the inner reinforced support spring, the spring length of the outer flexible support spring is 1.2-1.5 times the spring length of the inner reinforced support spring, and the initial stiffness of the inner reinforced support spring is 2-3 times the initial stiffness of the outer flexible support spring.

5. The spine-protecting adaptive spring mattress according to claim 1, characterized in that: The super soft moisture absorption and pressure relief layer adopts an improved non-temperature sensitive memory foam material, and the thickness of the super soft moisture absorption and pressure relief layer is 1-3 cm.

6. The spine-protecting adaptive spring mattress according to claim 1, characterized in that: The super soft moisture absorption and pressure relief layer is made of any one or more materials selected from open-pore breathable high-elastic cotton, air fiber, or breathable suspension core, and the thickness of the super soft moisture absorption and pressure relief layer is 1-2 cm.

7. The spine-protecting adaptive spring mattress according to claim 1, characterized in that: The ventilation and stabilizing support layer is made of high-density latex and / or foam material, and regularly distributed ventilation holes are arranged in the ventilation and stabilizing support layer. The thickness of the ventilation and stabilizing support layer is 1-2.5 cm.

8. The spine-protecting adaptive spring mattress according to claim 1, characterized in that: The multifunctional composite cushioning layer 2 has a thickness of 3-6 cm, and the hardness of the ultra-soft moisture-absorbing and pressure-relief layer, the ultra-soft moisture-absorbing and pressure-relief layer and the ventilation and stable support layer increases layer by layer.

9. The spine-protecting adaptive spring mattress according to claim 1, characterized in that: The thickness of the fabric composite layer is 1.5-3.5 cm.

10. The spine-protecting adaptive spring mattress according to claim 1, characterized in that: The overall surface hardness of the fabric composite layer and the multifunctional composite paving layer is greater than 7N.

11. A mattress hardness testing method, characterized in that: include: Obtaining a mattress sample to be tested, and performing a thickness pre-compression process on the mattress sample; Using a testing device equipped with a pressure head to compress the mattress sample at a nonlinear loading rate, and stopping when the thickness of the mattress sample is compressed to a preset thickness, and then recording the unloading characteristics of the pressure head during the unloading process; Based on the unloading characteristic, the pressure value when the indenter displacement reaches different thickness characteristic values ​​is obtained, and the pressure value is set as a segmented hardness characteristic value in combination with the indenter displacement; The mattress sample is subjected to layer-by-layer hardness performance analysis based on the segmented hardness characteristic values, and the result of the layer-by-layer hardness performance analysis is used as the softness and hardness test result of the mattress sample.

12. The mattress hardness testing method according to claim 11, characterized in that: Also includes: Obtaining the time lag characteristics of the pressure recovery of the mattress sample during the compression and unloading process of the head of the bed; Calculate the recovery coefficient according to the time lag characteristic; The coefficient of restitution is used to quantify the elastic performance and support stability of the mattress sample in dynamic use.

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