Bed mattress adaptable to the morphology of each user

Description

technical field

[0001] The invention relates to the field of mattresses, particularly mattresses intended for bedding. Specifically, it relates to a bed mattress capable of adapting to the body shape of each user. Such systems are known from documents WO201909274-A1 and US6653363B1. Previous technique

[0002] The drive to improve comfort in the mattress industry has led players in this sector to continuously develop innovations. Comfort is an even more crucial factor in the bedding sector, where users seek absolute comfort to ensure the most peaceful nights possible.

[0003] One of the main challenges for a user is choosing the mattress that best suits their body type while providing optimal comfort. This difficulty is compounded when the choice of mattress involves multiple users, particularly a couple, with different body types and therefore different comfort needs. To offer optimal comfort regardless of the users' body types, manufacturers have developed a wide variety of mattresses with very different characteristics.

[0004] Some players in the field have proposed combining two single mattresses that have different characteristics in order to form a single mattress.

[0005] Such single mattresses can then be used separately, that is, in two separate beds. However, in addition to hindering the users' privacy, such an arrangement multiplies the costs for the user. Indeed, in addition to the two single mattresses, the user must purchase two beds adapted to each mattress.

[0006] Furthermore, these single mattresses may feature reversible attachment systems that allow for the creation of a single, larger mattress suitable for both users, as each user has a mattress tailored to their needs. However, in this case, the interface between the two single mattresses creates a dip that causes discomfort for the users. This solution also limits the mattress space available to each user to the portion of the single mattress best suited to their needs.

[0007] Another proposed solution is a single mattress consisting of a first and second section, each with different characteristics (e.g., firmness, breathability, and resilience) tailored to the body type of each user in the couple. However, such mattresses are complex to manufacture and may need to be replaced if one user's body type changes. Even a slight weight gain in one user can necessitate adjustments to the mattress's specifications. Furthermore, this solution requires each user to occupy the section of the mattress suited to their body shape. Typically, this type of mattress is divided into two equal sections, which can lead to discomfort if one user is larger than the other.Indeed, the latter will need more space and will therefore likely be cramped in the area allocated to it.

[0008] Thus, there is a need for a mattress that offers optimal comfort for multiple users, regardless of the users' body type. Summary of the invention

[0009] The invention aims to solve, at least partially, this need.

[0010] The invention relates in particular to a bed mattress which comprises: a cradle structure which is configured to fit the shape of at least one body of a mattress user, and a support structure, arranged below the cradle structure, and which is configured to provide support for the user's body.

[0011] Furthermore, the reception structure consists of: a first single layer which has a top surface and a bottom surface, the first single layer being made of a material which has breathability such that, when the user uses the mattress, the first single layer transports all or part of the body heat produced by the user from the top surface to the bottom surface, said to be transported body heat, and a second layer which is arranged adjacently and below the first single layer and which is made of a thermoreactive, non-memory viscoelastic foam, so that, under the effect of the heat present on the bottom surface of the first single layer, the second layer is configured to induce a deformation damping effect between a damping configuration and a rebound configuration.

[0012] According to the invention, the second layer has a rebound resilience rate of between 15% and 60%, referred to as the resilience range, at a temperature between 18°C ​​and 37°C, so that, in the damping configuration, at room temperature or at a temperature close to room temperature, the second layer has no rebound resilience or has a low rebound resilience rate within the resilience range.

[0013] According to the invention, in the rebound configuration, at the temperature of the transported body heat or at a temperature close to the temperature of the transported body heat, the second layer exhibits a high rebound resilience rate within the resilience range.

[0014] In a first embodiment, the first single layer comprises a viscoelastic foam which is configured to induce a deformation damping effect.

[0015] In a second embodiment, the first single layer comprises a structure formed of a non-woven fiber and at least one binder with viscoelastic behavior, the structure being configured to induce a deformation damping effect on the first single layer.

[0016] In one example, of the second embodiment, the viscoelastic binder comprises at least one polymer.

[0017] In a third embodiment, the first single layer has a thickness of between 2 cm and 4 cm.

[0018] In a fourth embodiment, the second layer has a hardness between 1.80 kPa and 2.60 kPa.

[0019] In a fourth embodiment, the second layer has a thickness of between 4 cm and 6 cm. Brief description of the drawings

[0020] Other features and advantages of the invention will be better understood from the following description and with reference to the attached drawings, given for illustrative purposes only and not for limitation.

[0021] [ Fig. 1 ] There figure 1 represents a mattress for a bed according to an embodiment of the invention.

[0022] The single figure does not necessarily respect scales, particularly in thickness, and this is for illustrative purposes. Description of the implementation methods

[0023] One of the goals of this invention is to provide a mattress that adapts to the body shape of each user.

[0024] To achieve this, the inventor proposes a mattress whose comfort layer reacts to each user's specific body shape and body heat, shifting between a cushioning and a rebounding configuration. The cushioning configuration is better suited to lighter users, while the rebounding configuration is better suited to heavier users.

[0025] With such an arrangement, the invention makes it possible to offer a unique mattress that provides adapted comfort, according to the morphology of each user.

[0026] As illustrated on the figure 1 The invention relates to a bed mattress 100 which includes a reception structure 110 and a support structure 120.

[0027] In the invention, the support structure 110 is configured to conform to the shape of at least one body of a mattress user.

[0028] Indeed, as is well known, the initial feel of a mattress is the first point of contact between a user's body and the mattress. In practice, the mattress filling determines this initial feel. The thicker and higher quality the surface filling, the better the comfort. This is referred to as initial comfort. A good initial feel facilitates blood circulation, reduces pressure points, and consequently, minimizes frequent movements.

[0029] Also in the invention, the support structure 120 is arranged below the reception structure 110 and is configured to provide support for the user's body.

[0030] Indeed, as is well known, the support of a mattress corresponds to its ability to keep the user's spine properly aligned. When the user sleeps, it is essential that the muscles supporting their spine can rest. Therefore, if the support is inadequate, the user's muscles exert strain at pressure points (shoulders, pelvis), creating a feeling of fatigue, or even pain upon waking.

[0031] In the invention, the receiving structure 110 consists of a first single layer 111 and a second layer 112.

[0032] In particular, the first single-layer 111 has a top surface and a bottom surface. The top surface and the bottom surface form two opposite faces of the first single-layer 111. The top surface corresponds to the face of the first single-layer 111 intended to come into contact with the user. The bottom surface corresponds to the face of the first single-layer 111 intended to come into contact with the second layer 112.

[0033] Furthermore, the first single-layer 111 comprises a material which exhibits such breathability that, when the user uses the mattress, the first single-layer 111 transports all or part of the body heat produced by the user from the upper surface to the lower surface, known as transported body heat.

[0034] As is well known, a mattress's breathability refers to its ability to wick away water vapor, particularly perspiration generated by the user's body while using the mattress. Therefore, a mattress with good breathability is designed to significantly limit the accumulation of water vapor condensation inside the mattress.

[0035] In one first way of making the first single layer 111, it includes a viscoelastic foam which is configured to induce a damping effect by deformation.

[0036] Viscoelastic foam, also known as memory foam, is known to adapt to all body shapes. Specifically, this type of foam is thermoreactive and deforms in response to the user's weight and body temperature. It can return to its original shape after a relatively long recovery period.

[0037] For example, viscoelastic foam is a polyether foam, particularly polyurethane.

[0038] In a second way of realizing the first single layer 111, it comprises a structure formed of a non-woven fiber and at least one binder with viscoelastic behavior, so that the structure is configured to induce a deformation damping effect of the first single layer 111.

[0039] The term "non-woven" refers to fibers distributed in a predetermined or random direction, whose internal cohesion is ensured by known mechanical, physical, or chemical processes and / or a combination thereof, excluding weaving and knitting. For example, the fibers may be bonded by friction, cohesion, and / or adhesion.

[0040] In one example, the viscoelastic binder comprises at least one polymer.

[0041] In a particular embodiment of the first single-layer 111, it has a thickness of between 2 cm and 4 cm. Thus, the first single-layer 111 can ensure optimal cushioning and heat transfer.

[0042] Back to the figure 1 , the second layer 112 of the host structure 110 is arranged adjacent to and below the first single layer 111.

[0043] In this way, heat can ideally pass from the first single layer 111 to the second layer 112.

[0044] Furthermore, the second layer 112 comprises a thermoreactive viscoelastic foam. Moreover, the viscoelastic foam of the second layer 112 is shape-memory free, so that, under the effect of heat present on the underside surface of the first single-layer 111, the second layer 112 is configured to induce a deformation damping effect between a damping configuration and a rebound configuration.

[0045] In the invention, the second layer 112 has a rebound resilience rate of between 15% and 60%, referred to as the resilience range, at a temperature between 18°C ​​and 37°C.

[0046] In the damping configuration, at room temperature or near room temperature, the second layer 112 exhibits no rebound resilience or exhibits a low rebound resilience rate within the resilience range.

[0047] The term "room temperature" or "close to room temperature" refers to a temperature between 10°C and 35°C, specifically between 15°C and 25°C.

[0048] Resilience, as is well known, characterizes the energy loss between pressure exerted on the second layer 112 and the force exerted by the second layer 112 to return to its initial shape. In other words, resilience corresponds to the ability of the second layer 112 to return the pressure of the user's body weight to its original shape. Therefore, the lower this force, the higher the resilience.

[0049] The resilience of the second layer 112 can be measured conventionally using an elasticity measurement. This involves projecting a calibrated steel ball from a predetermined height onto the second layer 112. The ball rebounds, and the height of the rebound is measured. This rebound height is then expressed as a percentage of the ball's projection height, known as the "rebound resilience rate." Specifically, the higher the rebound resilience rate, the more "high resilience (HR)" the foam is considered to have. Conversely, the lower the rebound resilience rate, the more "low resilience (LR)" the foam is considered to have.

[0050] In a first example of the second layer 112, it exhibits a hardness between 1.80 kPa and 2.60 kPa.

[0051] Finally, in a second example of the second layer 112, it has a thickness of between 4 cm and 6 cm.

[0052] In the rebound configuration, at the temperature of the transported body heat or at a temperature close to the temperature of the transported body heat, the second layer 112 exhibits a high rebound resilience rate in the resilience range.

[0053] The term "body heat transport temperature" or "temperature close to body heat transport temperature" refers to the temperature present at the user's surface. In practice, this temperature is typically between 32°C and 45°C, more specifically between 36°C and 42°C, and essentially close to 37°C to 38°C.

[0054] In practice, when the user uses the 100 bed mattress, the first single-layer 111 conforms to the user's shape. Then, the first single-layer 111 transports the user's body heat from its upper surface to its lower surface, which is adjacent to the second layer 112. Next, the second layer 112 reacts to the transported body heat by deforming between the damping and rebound configurations.

[0055] In particular, it should be noted that the user's size, and especially their build, will have the effect of compressing the first 111 single layer more or less.

[0056] Also, when the user's body size has the effect of little or no compression of the first single layer 111, then the first single layer 111 transfers little or no body heat to the second layer 112, so that the second layer 112 goes into the damping configuration.

[0057] However, when the user's body size has the effect of sufficiently compressing the first monolayer 111, then the first monolayer 111 transfers enough body heat to the second layer 112, so that the second layer 112 goes into the rebound configuration.

[0058] Thus, the 100 bed mattress according to the invention has variable resilience which adapts to the morphology of each user.

[0059] We have described and illustrated the invention. However, the invention is not limited to the embodiments we have presented. Thus, an expert in the field may deduce other variations and embodiments from the description and accompanying figures, provided they remain within the scope of the claims.

[0060] The invention is capable of numerous variations and applications other than those described above, provided they fall within the scope of the claims. In particular, unless otherwise stated, the various structural and functional features of each embodiment described above should not be considered as combined and / or closely and / or inextricably linked to one another, but rather as mere juxtapositions. Furthermore, the structural and / or functional features of the various embodiments described above may be juxtaposed or combined, in whole or in part, in any different manner, as long as they remain within the scope of the claims.

Claims

1. A bed mattress (100) comprising: - a reception structure (110) that is configured to conform to the shape of at least one body of a user of the mattress, and - a support structure (120), arranged below the reception structure (110), and which is configured to provide support for the user's body, wherein, the reception structure (110) consists of: - a first monolayer layer (111) which has a top surface and a bottom surface, the first monolayer layer (111) being constituted by a material which has a breathability such that, when the user uses the mattress, the first monolayer layer (111) transports all or part of the body heat produced by the user from the top surface to the bottom surface, so-called transported body heat, and - a second layer (112) which is disposed adjacent to and beneath the first monolayer layer (111) and which is constituted by a viscoelastic foam of the thermoreactive type and without shape memory, so that, under the effect of the transported body heat present at the bottom surface of the first monolayer layer (111), the second layer (112) is configured to induce a damping effect by deformation between a damping configuration and a rebound configuration, wherein, the second layer (112) has a rebound resilience of between 15% and 60%, referred to as the resilience range, at a temperature of between 18°C and 37°C, such that in the damping configuration, at ambient temperature or at a temperature close to ambient temperature, the second layer (112) has no rebound resilience or has a low degree of rebound resilience within the resilience range, and in the rebound configuration, at the temperature of the transported body heat or at a temperature close to the temperature of the transported body heat, the second layer (112) has a high rebound resilience within the resilience range.

2. The bed mattress (100) according to claim 1, wherein the first monolayer layer (111) comprises a viscoelastic foam which is configured to induce a damping effect by deformation.

3. The bed mattress (100) according to claim 1, wherein the first monolayer layer (111) comprises a structure formed of a fibre nonwoven and at least one binder with viscoelastic behaviour, the structure being configured to induce a damping effect by deformation of the first monolayer layer (111).

4. The bed mattress (100) according to claim 3, wherein the binder with viscoelastic behaviour comprises at least one polymer.

5. The bed mattress (100) according to any one of claims 1 to 4, wherein the first monolayer layer (111) has a thickness of between 2 cm and 4 cm.

6. The bed mattress (100) according to any one of claims 1 to 5, wherein the second layer (112) has a hardness of between 1.80 kPa and 2.60 kPa.

7. The bed mattress (100) according to any one of claims 1 to 6, wherein the second layer (112) has a thickness of between 4 cm and 6 cm.