COVER FOR A ROBOTIC DUMMY

Description

TECHNICAL FIELD OF THE INVENTION

[0001] The invention relates to the field of robotic mannequins which find particularly advantageous application in the field of sewing and the production of clothing items. STATE OF THE ART

[0002] For several years now, robotic mannequins have been emerging. These mannequins are intended for the textile industry and are configured to present at least some of their body shapes.

[0003] For example, we will note mannequins whose certain parts are more or less inflatable in order to enlarge the mannequin more or less and thus have several morphologies on the same mannequin.

[0004] These robotic mannequins thus make it possible to reproduce at least some of an individual's measurements with varying degrees of accuracy. This is made possible by moving parts.

[0005] However, one of the main drawbacks of these technologies lies in the discontinuity of the deformations of the mannequins; in fact, these discontinuities in the shape of the mannequin cause significant problems when making clothes.

[0006] An object of the present invention is therefore to propose a solution to these problems.

[0007] Other objects, features and advantages of the present invention will become apparent upon examination of the following description and the accompanying drawings. It is understood that other advantages may be incorporated. US 2016 / 339349 A1 discloses an artificial skin for a robotic mannequin being characterized in that it comprises a stack of layers, said stack of layers comprising an outer layer based on an elastomer and an inner layer comprising a textile SUMMARY OF THE INVENTION

[0008] A first aspect relates to a covering cover for a robotic mannequin capable of reproducing on demand at least part of the morphology of an individual by controlling a plurality of mobile shells relative to a frame of the robotic mannequin, the cover being characterized in that it comprises a stack of layers, said stack of layers comprising: an inner layer based on an elastomer; an outer layer comprising at least one textile, arranged around the inner layer, and applying at least one mechanical stress to at least part of the inner layer; and in which the cover comprises at least one element for reducing the transmission of mechanical stresses between the inner layer and the outer layer.

[0009] The movement of the shells generally results, in the case of a robotic mannequin of the prior art, in topographical irregularities at the edges of the shells; in fact, when a shell moves forward, this creates a gap between the surface of said shell and the surface surrounding the shell.

[0010] The present invention solves this problem by placing a cover over the frame, and therefore the shells, of the robotic mannequin.

[0011] This cover, by its design, allows it to match the movements of the shells while harmonizing the surface topography of the robotic mannequin.

[0012] This is achieved by using clever layer stacking.

[0013] Furthermore, the use of at least two layers of different physicochemical natures requires the use of a trick in order to reduce the coefficient of friction between said two layers. The present invention thus allows deformation of the cover according to the frame of the robotic mannequin while maintaining a curved and not abrupt surface topography.

[0014] By limiting the mechanical constraints on the inner layer, that is to say by limiting friction, the movements of the shells are less hindered by the interfacial resistances between the two layers, internal and external, thanks to reduced friction. Indeed, when the shells move, they deform the internal layer which is already constrained by the external layer; it follows that the external surface of the internal layer (and the internal surface of the external layer) are the site of friction. The latter are all the more important as the internal layer, based on elastomer, is of a very adherent nature and the external layer is strongly stretched around it so that the external surface of the dummy is regular and smooth.

[0015] The present invention thus allows a robotic mannequin to have a surface topology close to, or even identical to, the surface topology of a human being. Indeed, the present invention makes it possible to reduce, or even avoid, the presence of topographical irregularities on the surface, for example of the trunk.

[0016] Another aspect relates to a method of installing a cover on a robotic mannequin capable of reproducing the morphology of an individual on demand by controlling a plurality of mobile shells relative to at least one frame, said method comprising the following steps: arrangement of the inner layer comprising an elastomer above the frame of the robotic mannequin; arrangement of the outer layer comprising at least one textile above the inner layer and so as to apply at least one mechanical compressive stress on at least part of the inner layer.

[0017] Another aspect relates to a robotic mannequin capable of reproducing on demand at least part of the morphology of an individual by controlling a plurality of mobile shells relative to a frame of the robotic mannequin, and comprising a covering cover applied to the plurality of shells, the outer layer applying at least one mechanical stress on the inner layer when the inner layer is arranged between said frame and the outer layer. BRIEF DESCRIPTION OF THE FIGURES

[0018] The aims, objects, as well as the characteristics and advantages of the invention will emerge more clearly from the detailed description of an embodiment thereof which is illustrated by the following accompanying drawings in which: There Figure 1 depicts a robotic mannequin covered with a cover according to an embodiment of the present invention. The Figure 2 represents a schematic view of a robotic mannequin. The Figure 3represents a cross-sectional view of a mannequin covered with a cover according to an embodiment of the present invention. The Figure 4 represents a stack of layers forming a cover according to an embodiment of the present invention. The Figure 5 represents a stack of layers forming a cover according to another embodiment of the present invention. The Figure 6 represents a stack of layers forming a cover according to another embodiment of the present invention. The Figure 7 represents a stack of layers forming a cover according to another embodiment of the present invention.

[0019] The drawings are given by way of example and are not limiting of the invention. They constitute schematic representations of principle intended to facilitate the understanding of the invention and are not necessarily to the scale of practical applications. DETAILED DESCRIPTION

[0020] Before commencing a detailed review of embodiments of the invention, optional features which may optionally be used in combination or alternatively are set out below: the element 140 for reducing the transmission of mechanical stresses is at least partly formed by a portion comprising a lubricating agent 141, said portion being included in said inner layer 120 and / or said outer layer 130; Thus the presence of this lubricating agent 141 in the outer layer 130 means that the inner surface 132 of the outer layer 130 has a coefficient of friction with the outer surface 123 of the inner layer 120 which is low compared to the case where there would be no lubricating agent 141 in the outer layer 130. This makes it possible to reduce the coefficient of friction between the inner layer and the outer layer; said lubricating agent 141 is arranged in the volume of the inner layer 120 and / or of the outer layer 130; By arranged in volume is meant that this agent is a component of the layer concerned. The lubricating agent reduces the sticky effect of the layer, especially when it is the elastomer layer, while retaining its elasticity.The inner layer is silicone-based; This provides an inner layer that conforms to the movements of the shells while adapting the topography of the frame to reduce irregularities. The lubricating agent 141 is a silicone additive; the ratio between the thickness 121 of the inner layer 120 and the thickness 131 of the outer layer 130 is between 0.9 and 1.1, the thicknesses 121, 131 being taken in a direction orthogonal to the inner surface 122, 132 of the layer 120, 130 considered at the measurement point considered; This provides similar deformation behavior for both layers, with good protection against piercing by needles, softness or a certain flexibility to the touch, without risk of musculoskeletal disorders.The thickness 121 of the internal layer 120 is between 3 and 7 mm, and is preferably equal to 5 mm; this makes it possible to adopt the desired shape by moving the shells while reducing the existing topographical irregularities between the different moving or non-moving parts of the frame.The ratio between the internal transverse dimension of the external layer 130 at rest and the external transverse dimension of the internal layer 120 is strictly less than 1; the element 140 for reducing the transmission of mechanical stresses comprises at least one intermediate layer 142 whose internal surface has a coefficient of friction lower than that of the external surface 123 of the internal layer 120, and preferably which comprises at least one lubricating element taken from at least: Teflon, a varnish, a primer; the internal layer 120 and the external layer 130 are physically dissociated; This allows the external layer to slide freely, and to have several degrees of freedom in the choice of materials for both the internal layer and the external layer. This also makes it possible to combine several materials and thus benefit from their cumulative physicochemical properties.This allows for an inner elastomer layer and an outer textile layer. The textile comprises: a 3D flexible textile with an additive in the form of a treatment via the addition of a finish; This allows needles to be inserted into the textile when making pieces of clothing. This allows for a wide choice of textures for the outer face of the outer layer. This textile can be configured to have anti-friction properties with respect to clothing or anti-electrostatic properties, or it can prevent premature wear of this layer. A pressure sensor is configured to measure the pressure exerted by the outer layer 130 on the inner layer 120.According to one possibility, the robotic mannequin 10 is capable of reproducing on demand at least part of the morphology of an individual by controlling a plurality of shells 11 movable relative to a frame of the robotic mannequin 10, and it comprises a covering cover 100 applied to the plurality of shells, the outer layer 130 applying at least one mechanical stress to the inner layer 120 when the inner layer 120 is arranged between said frame 11 and the outer layer 130. In this way, the outer layer 130 is shaped to undergo a mechanical stress in tension when it is arranged on said robotic mannequin 10. The elongation of the perimeter of the outer layer can be up to 50%. Actuators are configured to move the shells of the plurality of shells, the thrust force of the actuators being at least 150 N, and preferably 200 N. This ensures deformation of the skin and the cover.Too little thrust causes the actuators to stall, too much thrust can damage the clothing. This allows the cover to be positioned as close as possible to the frame so as to accurately reproduce the required morphology based on the movement of the shells. This also avoids creases on the surface of the robotic mannequin.

[0021] The present invention relates to a cover that may be a single piece or include a plurality of coverings. Indeed, the cover according to the present invention includes a stack of layers. According to one embodiment, the layers of the stack of layers may have areas for joining together. For example, this may be a seam on an upper edge of the cover making it possible to join all of the layers of the stack of layers together while maintaining freedom of movement at the level of the faces of at least two layers of the stack of layers.

[0022] According to a preferred embodiment, at least some of the layers of the stack of layers are physically independent of each other.

[0023] Thus, according to an embodiment as described below, the stack of layers comprises at least one external layer and one internal layer as well as an interface between said external and internal layers.

[0024] Advantageously, at least one of the layers of the stack, and preferably all the layers, have the shape of a continuous envelope from bottom to top, and only provided with two openings, respectively a lower opening and an upper opening. Positioning on the frame of the mannequin is carried out by putting on the layer in question.

[0025] Thus, according to this embodiment, the cover comprises an internal layer, also called the first layer, preferably comprising an elastomer, configured to cover the frame of the robotic mannequin. The layer may be based on an elastomer. By "based" on a material M, we mean a layer comprising this material M only or mainly this material M and possibly other materials.

[0026] Then, once this inner layer is in place, the outer layer can be placed over, but not necessarily in contact with, the inner layer. This outer layer advantageously comprises a textile configured to cover the inner layer and therefore the robotic mannequin. The positioning of the outer layer and the inner layer on the frame of the robotic mannequin creates an outer layer / inner layer interface.

[0027] According to one embodiment, an intermediate layer may be disposed between the inner layer and the outer layer, before and / or after positioning the outer layer. This intermediate layer forms at least in part the outer layer / inner layer interface.

[0028] Advantageously and as described below, this intermediate layer can be configured to reduce the mechanical stresses applied by the outer layer to the inner layer and / or vice versa. It will be noted that these mechanical stresses have a vector one of the main components of which is in the plane of the surfaces of the inner and outer layers. Indeed, when the frame of the robotic mannequin deforms, this causes the deformation of the cover, and thus of the stack of layers. In order to reduce the mechanical stresses between the outer and inner layers, the interface is advantageously an interface for reducing the transmission of mechanical stresses. For example, this interface can comprise an intermediate layer comprising a lubricating element, and / or comprise a lubricating agent.Thus, the interface for reducing the transmission of mechanical stresses may comprise a varnish, or a Teflon layer, or any type of element or lubricating agent making it possible to reduce the coefficient of friction between the internal layer and the external layer. According to one embodiment, these elements or lubricating agents may be integrated at least in part into the internal layer and / or the external layer.

[0029] Indeed, it may be a layer deposited on the external surface of the internal layer opposite the internal surface of the external layer, and / or on the internal surface of the external layer.

[0030] It may also be a lubricating agent placed directly in the inner layer and / or the outer layer allowing the formation of an interface reducing the transmission of mechanical stresses with the other layer.

[0031] We will now describe the present invention through the figures 1 to 7 .

[0032] There Figure 1 represents, according to one embodiment, a robotic mannequin 10 comprising a cover 100 according to the present invention. According to this figure, the cover 100 is shaped to cover the frame 11 of the robotic mannequin 10 so as to define the surfaces of the trunk, and preferably of the arms and preferably of the upper thighs.

[0033] A robotic mannequin is understood to mean a device for reproducing the morphology of a human being, on at least one anatomical part. In particular, it may be a portion of the trunk, from the hips to the neck. This case is not limiting, the mannequin may alternatively or additionally correspond to other parts of the body, in particular at least one lower limb and / or at least one upper limb. The adjective "robotic" is understood to mean the presence, in the mannequin, of moving parts that can be controlled by control means, typically computer means generating digital commands then transmitted and transformed into control signals for electromechanical elements.

[0034] There Figure 2represents a schematic view of a portion of the frame 11 of a robotic mannequin 10. This frame 11 comprises a plurality of shells 12 movable relative to said frame 11 so as to be able to adapt the morphology, at least in part, of the robotic mannequin 10 according to the needs of the user.

[0035] In the absence of a cover 100 according to the present invention, the movement of these shells 12 could result in reliefs at the edge of the shell 12 incompatible with a human morphology. These reliefs would include in particular notches or even abrupt hollows. These reliefs would form topographical irregularities and would harm the harmony of the surface of the robotic mannequin 10. The use of a cover 100 according to the present invention reduces, or even completely avoids, the presence of this type of drawback. Indeed, the use of a cover 100 according to the present invention makes it possible to standardize the surface of the robotic mannequin 10.

[0036] There Figure 3 represents a sectional view at the waist of a robotic mannequin 10 comprising a cover 100 according to an embodiment of the present invention.

[0037] According to the embodiment illustrated in Figure 3 , the stack of layers 110 comprises the inner layer 120, an intermediate layer 142 for reducing the transmission of mechanical stresses and the outer layer 130.

[0038] Advantageously, the intermediate layer 142 for reducing the transmission of mechanical stresses is configured to reduce the coefficient of friction which would exist between the internal layer 120 and the external layer 130 in the absence of said intermediate layer 142 or of a lubricating agent 141.

[0039] It will be noted that advantageously, the stack of layers 110 smooths the shapes produced by the shells 12 of the frame 11 of the robotic mannequin 10. In particular, the cover 100 makes it possible, through the choice of materials and their respective thicknesses, to reduce, or even avoid, the formation of abrupt asperities at the surface of the robotic mannequin 10. These abrupt asperities are part of a plurality of topographical irregularities observable on robotic mannequins in the absence of a cover according to the present invention.

[0040] According to one embodiment, the outer layer 130 comprises a textile. It may be a knit made at least in part from fibers of polymer material, in particular elastomers (for example at least 15% by mass of elastomer fibers). As material, mention may be made of: polyamide, polyester, metal fibers, elastomers such as elastane. For example, the outer layer may be formed by a knit comprising a combination of fibers: elastomer (for example elastane at 17% by mass), polyamide (for example 51% by mass), polyester (for example 32% by mass).

[0041] Preferably, the elongation up to the elastic limit of the outer layer 130 is greater than 100%, or even more than 200%.

[0042] Cleverly, the fact that the outer layer 130 comprises a textile allows the user to prick the cover 100 with a needle for example, to place pieces of clothing there for example.

[0043] Advantageously, the thickness 131 of the external layer 130 is between 2 and 8 mm, preferably between 3 and 7 mm and advantageously equal to 5 mm.

[0044] According to one embodiment, the spatial dimensions of the outer layer 130 are greater when the outer layer 130 is not arranged on the inner layer 120, that is to say when it is at rest, than those when the outer layer is arranged on the inner layer 120. The outer layer is thus stretched.

[0045] According to one embodiment, the inner layer 120 comprises an elastomer, preferably silicone. Optionally, it could be a polymer material having an elongation rate at the elastic limit of at least 500%, or even 800%. Preferably, the material has good fatigue resistance, with limited shape memory, for example resistant to at least 45,000 cycles; preferably, the elastomer material has a reduced hardness, so as to flexibly accommodate variations in the position of the shells, for example to avoid surface discontinuity phenomena at the areas between the shells.

[0046] The hardness of the elastomer material is preferably less than or equal to 50 Shore 00; it may, for example, have a Shore 00 hardness of 40.

[0047] Preferably, by using a lubricating agent in the silicone material, the coefficient of friction between the layer 120 and the layer 130 is lower than that which would exist between a layer 120 made of silicone only, and the layer 130. The agent can be added to the composition which has not yet hardened; it can be an additive of the type sold under the brand name “soft touch” by the company COP in Saint Nazaire en Royans and be present for example at a rate of 1% by mass of the mixture. Furthermore, the additive can comprise polyurethane and / or polyester, for example in the form of a dispersion in the silicone resin, and / or polyisocyanates emulsifiable in water.

[0048] Preferably, the thickness 121 of the internal layer 120 is between 2 and 8 mm, preferably between 3 and 7 mm and advantageously equal to 5 mm. It is not absolutely necessary for the entire thickness 121 to be made with an elastomer, in particular silicone, comprising an additive promoting sliding; a surface portion of this thickness may be sufficient for this purpose.

[0049] As an additional or alternative possibility, a varnish is applied to the surface of the outer layer, intended to reduce the coefficient of friction.

[0050] Cleverly, the thickness 121 of the internal layer 120 makes it possible to place on the internal layer 120, in the internal layer 120 and / or under the internal layer 120, one or more sensors of various types so as to collect data, these sensors will be described later.

[0051] The clever choice of this thickness 121 makes it possible on the one hand to accommodate the variations in height between various mobile shells so as to maintain a harmonious topography and on the other hand to have the freedom to arrange various other organs within the internal layer 120 itself, such as for example sensors.

[0052] According to a preferred embodiment, the thickness 121 of the inner layer 120 and the thickness 131 of the outer layer 130 are identical, possibly to within 10%. This makes it possible to have similar behaviors during deformations.

[0053] According to one embodiment, the outer layer 130 applies a compressive mechanical stress to the inner layer 120 when the outer layer 130 and the inner layer 120 cover the frame 11 of the robotic mannequin 10.

[0054] Particularly advantageously, the outer layer 130 is arranged above the inner layer 120 so as to apply a compressive mechanical stress to the inner layer 120. For this, several methods are possible.

[0055] By way of non-limiting example, the outer layer 130 may comprise a textile or an elastic element so that the extension dimensions of the outer layer 130 are smaller than the extension dimensions of the frame 11 of the robotic mannequin 10 covered with the inner layer 120. Thus, when the outer layer 130 is arranged so as to cover the inner layer 120, the outer layer 130 undergoes a mechanical stress in tension and the inner layer 120 undergoes a mechanical stress in compression.

[0056] By way of non-limiting example, the outer layer 130 may comprise a clamping mechanism so as to reduce the extension dimensions of the outer layer 130, once it is disposed above the inner layer 120.

[0057] Preferably, the outer layer 130 has an elongation capacity within its elastic limit of at least 50%.

[0058] As indicated previously, a first option is that the element for reducing the transmission of mechanical stresses between the internal layer 120 and the external layers 130 is produced by means of an agent in the material of one of these layers, and particularly of the internal layer 120.

[0059] In addition or as an alternative, the element for reducing the transmission of mechanical stresses can be achieved by a physical interface inserted between the layer 120 and the layer 130. In this case, an intermediate layer 142 is used, the properties of which are to provide less friction between the intermediate layer 142 and each of the layers 120 and 130, relative to the situation which would exist without the intermediate layer, with direct friction between the layer 120 and the layer 130. Preferably, the thickness of the intermediate layer 142 is less than the thickness of the layer 120 and the layer 130.

[0060] There Figure 4represents a stack of layers 110 according to an embodiment of the present invention. In this figure, the interface 140 for reducing the transmission of mechanical stresses may have undergone any treatment aimed at reducing the coefficient of friction between the external surface 123 of the internal layer 120 and the internal surface 132 of the external layer 130. This reduction in the coefficient of friction allows the internal layer 120 to move locally as a function of the movable shells 12 of the frame 11 and to deform the external layer 130 as a function of said movements of shells 12.

[0061] In this figure, and according to one embodiment, the thickness 131 of the external layer 130 is less than the thickness 121 of the internal layer 120.

[0062] According to one embodiment, the thickness 111 of the stack of layers 110 is between 8 and 12 mm, preferably between 9 and 11 mm and advantageously 10 mm. Figure 5represents an embodiment in which the interface 140 for reducing the transmission of mechanical stresses comprises an intermediate layer 142 disposed between the inner layer 120 and the outer layer 130.

[0063] This intermediate layer 142 is configured to reduce the coefficient of friction, also called friction, between the external surface 123 of the internal layer 120 and the internal surface 132 of the external layer 130.

[0064] There Figure 6 represents an embodiment according to the present invention in which the outer layer 130 comprises a lubricating agent 141. Thus the presence of this lubricating agent 141 in the outer layer 130 results in the inner surface 132 of the outer layer 130 having a coefficient of friction with the outer surface 123 of the inner layer 120 which is low compared to the case where there is no lubricating agent 141 in the outer layer 130.

[0065] Thus, the presence of a lubricating agent 141 in the outer layer 130 results in a modification of the surface condition of the surfaces 132, 133 of the outer layer 130 so that the coefficient of friction with the outer surface 123 of the inner layer 120 is reduced relative to the case without lubricating agent 141. According to another possibility, the inner surface of the outer layer has a coating increasing the sliding, for example with a primer layer.

[0066] There Figure 7 represents the opposite case, i.e. an embodiment in which it is the inner layer 120 which comprises a lubricating agent 141.

[0067] The lubricating agent may be in the form of an additive incorporated into the silicone material, as previously indicated.

[0068] An embodiment not illustrated also consists in the inner layer 120 and the outer layer 130 each comprising a lubricating agent 141 of the same physicochemical nature or not.

[0069] Generally speaking, the present invention consists of a cover 100 comprising at least one outer layer 130 and one inner layer 120 having a low coefficient of friction relative to each other, either by the very nature of their respective materials comprising or not one or more lubricating agents 141 thus forming an interface 140 for reducing the transmission of mechanical stresses, or by the addition of an intermediate layer 142 arranged between the inner layer 120 and the outer layer 130 so as to reduce the mechanical stresses, these mechanical stresses relate to the stresses that the outer layer 130 applies to the inner layer 120 and the stresses that the inner layer 120 applies to the outer layer 130.

[0070] According to one embodiment, one or more sensors may be arranged on or in the cover 100, preferably between the outer surface 123 of the inner layer 120 and the inner surface 132 of the outer layer 130, so as to measure one or more physical parameters. Preferably, these may at least be pressure sensors making it possible to evaluate the pressure exerted on the cover, and more particularly between the outer layer 130 and the inner layer 120.

[0071] For example, a force sensor or a strain gauge may be arranged in the cover 100 so as to measure in real time the mechanical stresses applied by one layer to another and / or by the frame 11 to a garment through the cover 100.

[0072] Advantageously, the present cover 100 makes it possible to accommodate one or more sensors of various types at various levels thereof.

[0073] Thus, the present invention makes it possible to reduce the abrupt surface deformations present. The present invention makes it possible to regularize the surface topography so that it comes as close as possible to a human morphology with little or no topographic irregularities. The use of a cover according to the present invention ensures a most human appearance for the surface of the robotic mannequin, allowing the user to easily design clothing.

[0074] The present invention also relates to a method of installing a cover according to the present invention on said robotic mannequin.

[0075] In particular, the present invention makes it possible to reduce the mechanical stresses supported by the various elements of the mechanical force transmission chain. Indeed, this mechanical chain, comprising among other things a motor, mechanical transmission elements, at least one shell then a portion of the internal layer and a portion of the external layer, must support very significant stresses when the coefficient of friction between the internal layer and the external layer is not reduced as presented in the present invention.

[0076] It should be noted in particular that in the absence of an element for reducing the transmission of mechanical stresses, the engine and all the transmission parts would be subjected to high stresses in sustained mode for the movement of a hull in the face of the friction existing between the external layer and the internal layer.

[0077] The clever use of this element to reduce the transmission of mechanical stress makes it possible to work with lower power motor elements, lighter, less expensive mechanical parts and polymer shells, for example carbon in an organic matrix.

[0078] In fact, the element of reducing the transmission of mechanical stresses makes it possible to reduce, or even avoid, the damage that the parts of this mechanical stress transmission chain may suffer.

[0079] According to one embodiment, this method comprises at least the following steps: arrangement of the inner layer above the frame of the robotic mannequin; arrangement of the outer layer above the inner layer, the outer layer being arranged so as to apply a compressive mechanical stress on a portion of the inner layer.

[0080] This allows the robotic mannequin's frame to be molded as closely as possible and thus reproduce the desired morphology while reducing or even avoiding topographical irregularities between the shells.

[0081] The invention is not limited to the embodiments previously described and extends to all embodiments covered by the claims. List of references

[0082] 10Robotic mannequin 11Shells 100Cover 110Layer stack 111Thickness of the layer stack 120Inner layer 121Thickness of the inner layer 122Inner surface of the inner layer 123Outer surface of the inner layer 130Outer layer 131Thickness of the outer layer 132Inner surface of the outer layer 133Outer surface of the outer layer 140Interface for reducing the transmission of mechanical stress 141Lubricating agent 142Intermediate layer 143Thickness of the intermediate layer

Claims

1. A coating cover (100) for robotic dummy (10) capable of reproducing at least part of the morphology of an individual on request by controlling a plurality of movable shells (11) relative to a framework of the robotic dummy (10), the cover (100) being characterised in that it comprises a stack of layers (110), said stack of layers (110) comprising: - an elastomer-based inner layer (120); - an outer layer (130) comprising at least one textile, disposed around the inner layer (120), and applying at least one mechanical stress to at least part of the inner layer (120); and wherein the cover (100) comprises at least one element (140) for reducing transmission of mechanical stresses between the inner layer (120) and the outer layer (130).

2. The cover (100) according to the preceding claim, wherein the element (140) for reducing transmission of mechanical stresses is at least partly formed by a portion comprising a lubricating agent (141), said portion being comprised in said inner layer (120) and / or said outer layer (130).

3. The cover (100) according to the preceding claim, wherein said lubricating agent (141) is disposed in a volume of the inner layer (120) and / or of the outer layer (130).

4. The cover according to one of the two preceding claims, wherein the inner layer is silicone-based.

5. The cover according to the preceding claim, wherein the lubricating agent (141) is a silicone additive.

6. The cover (100) according to any one of the preceding claims, wherein the ratio of the thickness (121) of the inner layer (120) to the thickness (131) of the outer layer (130) is between 0.9 and 1.1, the thicknesses (121, 131) being considered along a direction orthogonal to the inner surface (122, 132) of the layer (120, 130) considered at the considered measurement point.

7. The cover according to one of the preceding claims, wherein the thickness (121) of the inner layer (120) is between 3 and 7 mm, and is preferably equal to 5 mm.

8. The cover (10) according to any one of the preceding claims wherein the ratio of the internal transverse dimension of the outer layer (130) at rest to the external transverse dimension of the inner layer (120) is strictly less than 1.

9. The cover according to any one of the preceding claims wherein the element (140) for reducing transmission of mechanical stresses comprises at least one intermediate layer (142) the inner surface of which has a friction coefficient lower than that of the outer surface (123) of the inner layer (120), and preferably which comprises at least one lubricating element selected at least from among: Teflon, a varnish, a primer.

10. The cover (100) according to any one of the preceding claims, wherein the inner layer (120) and the outer layer (130) are physically dissociated from each other.

11. The cover (100) according to any one of the preceding claims, wherein the textile comprises elastomer fibres.

12. The cover (100) according to any one of the preceding claims comprising at least one pressure sensor configured to measure the pressure exerted by the outer layer (130) on the inner layer (120).

13. A method for installing a cover (100) according to any one of the preceding claims on a robotic dummy (10) capable of reproducing the morphology of an individual on request by controlling a plurality of movable shells (12) relative to at least one framework (11), said method comprising the following steps of: - disposing the inner layer (120) comprising an elastomer above the framework (11) of the robotic dummy (10); - disposing the outer layer (130) comprising at least one textile above the inner layer (120) and so as to apply at least one mechanical compressive stress to at least part of the inner layer (120).

14. A robotic dummy (10) capable of reproducing at least part of the morphology of an individual on request by controlling a plurality of movable shells (11) relative to a framework of the robotic dummy (10), and comprising a coating cover (100) according to any one of claims 1 to 12 applied to the plurality of shells, the outer layer (130) applying at least one mechanical stress to the inner layer (120) when the inner layer (120) is disposed between said framework (11) and the outer layer (130).

15. The robotic dummy (10) according to the preceding claim, comprising actuators configured to move the shells of the plurality of shells, the pushing force of the actuators being at least 150 N, and preferably 200 N.