Damping system for double-leaf interlocking spring article

Abstract

The present invention relates to a damping system (100) for an article comprising a rigid support (110) having at least one face, called the receiving face, extending along a plane, a first spring blade (120) having a first end (121) and a second end (122), first means for assembling said first end (121) with said support (110), said first spring blade (120) extending along said support (110) along a convex trajectory so that said second end (122) is in contact with said receiving face and able to move in said plane during the compression and / or relaxation of said first spring blade (120), and a second spring blade (123) disposed between said first spring blade (120) and said support (110), said second spring blade (123) extending along said support (110) along a concave trajectory. Figure for the abbreviation: Figure 3

Description

Title of the invention: Damping system for a double-layered spring article technical field

[0001] The present invention relates to the field of damping systems.

[0002] The present invention relates more particularly to a damping system simplified and compact, suitable for integration into a variety of items to improve comfort, cushioning, flexibility, or provide additional rebound propulsion.

[0003] By damping system in the sense of the present invention, throughout the following description, a system comprising one or more elastic or spring elements that both dampen shocks by compression of the element and generate a force accompanying the rebound movement of the element.

[0004] The present invention will thus find many advantageous applications in the field of damping systems, and in particular in the integration of damping systems into articles of the footwear type, for example shoes and boots, but also in the integration of damping systems into a wide variety of saddlery articles, vehicles, etc. State of the art

[0005] The Applicant observes that certain solutions in the development of footwear articles, in particular Kangoo Jumps® type rebound sports shoes, make it possible to couple to the sole of the article a cushioning system allowing to modify walking, running or even sports practice.

[0006] Such a damping system comprises a spring element, for example one or more spring blades, which compresses under the user's weight and reduces transmitted shocks, particularly to the spine. The spring's rebound generates a propulsive force, improving the user's performance, especially jumping, and reducing the effort required for everyday movements. In addition to sports activities, these solutions are therefore particularly attractive for assisting people with reduced mobility, especially those undergoing rehabilitation.

[0007] The Applicant observes that the solutions proposed to date present a plurality of limitations.

[0008] In particular, the systems currently proposed are particularly bulky and are restricted to use only in conjunction with specialized footwear adapted to the cushioning system. The use of such footwear therefore considerably affects the user's gait and cannot be done at daily life with comfort, their use is therefore limited to sports practice over short periods.

[0009] The Applicant also observes that such specialized shoes are made of rigid materials to control the forces resulting from the compression and rebound of the spring element. This design also greatly reduces user comfort, as rigid shoes cannot adapt to the user's morphology and / or movements. The possibilities for walking or running in shoes incorporating such cushioning systems are therefore reduced, as the user's foot, and in particular their ankle, is restricted by the shoe's structure.

[0010] Furthermore, the Applicant observes that the use of spring blades in a damping system results in performance losses when the spring blade is highly compressed. Indeed, when the spring blade reaches its maximum compression point, that is, when it lies flat, its restoring force decreases greatly.

[0011] To compensate for this power loss, some solutions involve coupling the spring blade with a longitudinal elastic reinforcement, which is attached to the ends of the spring blade. The restoring force of the elastic reinforcement is thus maximized when the spring blade is highly compressed, facilitating its release in extreme positions.

[0012] However, the use of a longitudinal elastic reinforcement presents other disadvantages, in particular a limited lifespan. The assembly formed by a system incorporating a simple spring blade coupled with an elastic reinforcement also presents an unfavorable ratio in terms of weight, power, flexibility, and distribution of forces and masses.

[0013] The Applicant therefore submits that there is currently no satisfactory alternative solution for a cushioning system suitable for daily use to improve the user's walking comfort and / or to facilitate long-duration sporting activities, which has adequate reliability, lifespan and performance. Summary of the invention

[0014] The present invention aims to improve the current situation described above.

[0015] The present invention is more particularly aimed at overcoming the following drawbacks: above by proposing a cushioning system for an item that is compact and lightweight, and can be easily integrated into footwear to facilitate walking movements, and that has a long lifespan and appreciable rebound and cushioning performance.

[0016] To this end, the object of the present invention relates in a first aspect to a damping system for an article, the system comprising:

[0017] - a rigid support having at least one face, called the receiving face, extending according to a plan; and

[0018] - a first spring-loaded strip comprising a first end and a second at the end, the first spring-loaded slat has a curved shape between said ends.

[0019] In other words, the first spring blade exhibits a bend at rest; deformation of the first spring blade, through an increase or decrease in bend, generates a counteracting restoring force. Conversely, the rigid support is resistant to deformation, ideally dimensioned to resist a force equal to the maximum restoring force that can be generated by the first spring blade.

[0020] The first spring slat is, for example, dimensioned to allow its reversible deformation according to an angular interval corresponding to the perimeter of use of the first spring slat, the extreme positions of this angular interval being associated with a maximum restoring force, the rigid support not deforming or only slightly deforming under a force equal to the maximum restoring force.

[0021] Advantageously, the system includes first means for assembling the first end with the support, the first spring slat extending along the support along a convex trajectory so that the second end is brought into contact with the receiving face and able to move in the plane during the compression and / or release of the first spring slat.

[0022] In other words, the means for assembling the first end with the support, referred to as the first assembly means, allow the first spring blade and the support to be joined at the first end, with the second end moving along the receiving face. This design promotes the transmission of restoring forces from the first spring blade to the support at the first end and consequently generates a thrust from the first end relative to a weight distributed more or less uniformly on the support or even on an intermediate portion of the first spring blade.

[0023] It is understood here that the first assembly means allow movement of the first spring blade relative to the support, preferably via a pivot joint, or alternatively via a sliding pivot joint. The first assembly means allow, for example, rotation of the first end relative to the support about a first axis, for example a first axis in the plane of the receiving face or in a plane parallel to the plane of the receiving face, the second end moving about a second axis perpendicular to the first axis and lying in the plane of the receiving face.

[0024] It is further understood that the combination of the first spring blade and the support makes it possible to define a maximum compression position for the first spring blade, in which the first spring blade is pressed against the support. The first spring blade and the support are, for example, dimensioned, and their materials are selected taking into account an extreme position defined by the pressing of the first spring blade against the support.

[0025] Advantageously, the system further comprises a second spring blade having a third end and a fourth end, the second spring blade being disposed between the first spring blade and the support, the second spring blade extending along the support in a concave trajectory, the second spring blade being in contact with the support along an intermediate portion of the second spring blade and in contact with the first spring blade along the third and fourth ends.

[0026] It is understood here that the concave trajectory of the second spring blade corresponds to a trajectory opposite to the convex trajectory of the first spring blade. The first and second spring blades, for example, have the same central position so as to jointly produce a substantially symmetrical shape along a vertical plane orthogonal to the axis of displacement of the second end, that is to say, to the second axis.

[0027] It is further understood that the second spring blade is shorter than the first spring blade, so as to allow its insertion within the space formed by the first spring blade. The third and fourth ends are therefore in contact with two intermediate sections of the first spring blade, between the first and second ends. In other words, the second spring blade is nested between the support and the first spring blade.

[0028] It is further understood that the compression and release of the first spring blade similarly results in a compression and release of the second spring blade, the third and fourth ends sliding along the first spring blade during compression and release.

[0029] The Applicant observes that this design increases the efficiency of the first spring blade, i.e., the damping system, while maintaining a compact design. The Applicant also observes that the second spring blade exhibits a significant restoring force when the first spring blade approaches the position of maximum compression, i.e., when the first spring blade is almost flat against the support.

[0030] The Applicant further observes that, compared to solutions incorporating longitudinal elastic reinforcement, this design offers additional power for negligible impact on weight, and thus allows for lighter designs for the same performance, while increasing the lifespan of the damping system.

[0031] Those skilled in the art will further understand that this design increases the number of support points, via the third and fourth ends and the contact between the intermediate portion of the second spring leaf and the support. The addition of support points increases the strength and rigidity of the entire damping system, and in particular reduces the bending effects of the support due to forces applied solely along its longitudinal ends. The restoring forces are also partially shifted from an extreme position of the damping system to a position between the first assembly means and the contact between the second spring leaf and the support.

[0032] Obviously, the rigidity properties of the support and / or the elasticity of the first spring blade and / or the second spring blade are specific to an axis of force application. The support is, for example, dimensioned to exhibit greater resistance to deformation along a particular axis, for example, an axis perpendicular to the plane of the receiving face. In parallel, the first spring blade and / or the second spring blade are, for example, dimensioned to exhibit resistance to longitudinal forces and lateral torsion in order to prevent deformations of the spring blades other than a change in their curvature.

[0033] A person skilled in the art will further understand that the materials of the support and the first and second spring blades are selected in conjunction with their dimensions. For example, a support with a composite structure is provided, comprising a honeycomb plastic core covered with a layer of wood or Kevlar®.

[0034] Thanks to the present invention, the damping system can be implemented in a more compact manner than a system with two opposing spring blades at their respective ends, while avoiding power losses resulting from significant compression of the system. The damping system is also more efficient and durable than a system incorporating longitudinal elastic reinforcement.

[0035] In an advantageous embodiment of the invention, the first assembly means comprise:

[0036] - a hinge assembled with the first end and the support; or

[0037] - a half-hinge assembled with the first end and a pivot joint arranged between the half-hinge and the support; or

[0038] - a first rod passing through the first end and the support to form a pivot joint; or

[0039] - a removable pin passing through the first end and the support to form a pivot joint;

[0040] - a screw-nut assembly with the first end and the support;

[0041] - a first rod assembled with the first end and at least one first light focused on the support; or

[0042] - a removable pin assembled with the first end and at least one first light provided on the support.

[0043] It is understood here that the initial assembly means can be implemented in a variety of forms and are selected by those skilled in the art according to a plurality of criteria, including lightness, resistance to wear and deformation, the play allowed for rotation of the first end relative to the support compared to the angular deformation range of the spring blade, a possible displacement range granted to the first end, the ease of assembly and / or disassembly of the damping system, and economic criteria. A variety of other initial assembly means can also be considered, for example, simple adhesive means.

[0044] It is further understood that the combined use of a first rod and a first light allows, depending on the dimensions of the first light, for a guided longitudinal displacement of the first end, for example in order to move the restoring forces and bring them closer to a central position of the damping system, by allowing a longitudinal displacement at both the first and second ends.

[0045] In one embodiment, the damping system further comprises second means for assembling the second end with the support, the second means for assembling the second end in contact with the receiving face and providing translational guidance of the second end with respect to the receiving face.

[0046] A person skilled in the art will understand that the second means of assembly make it possible to perform several functions, including:

[0047] - a retention of the second end against the receiving face, so as to to prevent the detachment of the second end, the introduction of foreign bodies between the second end and the receiving face, the exit of the second spring slat, as well as any possible reversal of the first spring slat relative to the support, for example by rotation around the first assembly means; and

[0048] - a translational guidance, that is to say a limitation of the movement of the second end to a translation along the second axis.

[0049] It is further understood that, just as the first assembly means allow movement of the first end relative to the support Depending on whether it's a pivot or sliding pivot joint, the second assembly means also allow movement of the second end relative to the support via a pivot joint. For example, the second assembly means achieve an assembly of the second end relative to the support using a sliding pivot joint. The second assembly means define, for example, a longitudinal range of movement for the second end.

[0050] In yet another embodiment, the second assembly means comprise a second rod assembled with the second end and at least one second light provided on the support, the at least one second light receiving the second rod and ensuring its translation along the at least one second light.

[0051] In other words, the at least one second light defines the longitudinal range of displacement of the second end, the translation of the second rod in the at least one light corresponding to the translation of the second end and therefore to the compression and / or relaxation of the first spring blade.

[0052] In one design, a single second light is provided along the receiving face, the second rod being oriented along a third axis perpendicular to the plane of the receiving face and moving along the second axis. In another design, a pair of symmetrical second lights are provided along lateral edges of the support, for example on lateral guides or along a U-shaped cross-section as described below, the second rod being oriented parallel to the first axis and moving along the second axis.

[0053] Preferably, the second rod corresponds to a removable pin.

[0054] It is understood here that the removable nature of a pin makes it easier to the assembly and disassembly of the damping system, as well as its association with the article according to their respective designs, while retaining the properties described above with regard to the second rod.

[0055] In another embodiment, the second assembly means comprise a hollow sliding piece assembled with the second end, the sliding piece being configured to fit around the support so as to form a translational guide along an axis parallel to the axis of movement of the second end.

[0056] It is understood here that the sliding part also provides translational guidance for the second end along the second axis, while stiffening the damping system. In particular, the interlocking of the sliding part with the support prevents torsion and rotation of the first spring leaf outside of its compression and / or rebound movements. This design also avoids limiting the compression or rebound of the first spring leaf, and therefore does not affect its extreme positions, such as, for example until the first spring slat is pressed into place. The damping capacities of the system are therefore fully utilized.

[0057] In a specific embodiment, the damping system comprises two lateral guides assembled with the support and arranged on either side of the receiving face.

[0058] It is understood here that the lateral guides correspond to means of guiding the translation of the second end relative to the receiving face. In particular, the lateral guides do not hold the second end in position and only define limits for its movement.

[0059] The side guides and the support form, for example, a single unit or two separate units assembled together. The side guides are, for example, arranged only along the longitudinal interval of the second end and spaced apart by a distance corresponding to the width of the second end so as to precisely guide the movement of the second end, or arranged along the entire length of the support according to the width of the support so as to ensure contact of the second end with the support.

[0060] In another embodiment, the support has at least partially a U-shaped cross-section forming a groove, the second end moving inside the groove.

[0061] It is understood here that the U-shaped cross-section of the support increases its resistance to deformation under the restoring force of the spring blade and consequently reduces the volume and weight of the support for the same resistance to deformation. It is also understood that the U-shaped cross-section of the support has two lateral edges forming, for example, the lateral guides described above and allowing the translational guidance of the second end. The support has, for example, a U-shaped cross-section along the receiving face and / or along a portion of the support susceptible to deformation under the restoring force.

[0062] A person skilled in the art also understands that the selection of materials for the support can be adapted to a design having a U-shaped cross-section. The support has, for example, a solid structure made of a rigid and lightweight material such as aluminum, the U-shaped cross-section allowing the selection of lighter materials and / or materials with a simpler structure to implement, for equivalent rigidity.

[0063] Preferably, the support has the U-shaped cross-section along the entire length of the first spring slat, and the first spring slat has a first width and the groove has a second width, the first width and the second width being equal so as to achieve a precise adjustment of the compression of the first spring slat in the groove.

[0064] In other words, the width of the first spring blade, referred to as the first width, and the internal width of the groove, referred to as the second width, are substantially equal so that the first spring blade compresses inside the groove without any possible play in the groove. In particular, this design prevents any twisting of the first spring blade, that is to say, any rotation about the second axis.

[0065] The Applicant observes that this design provides a precise vertical guide during the compression and rebound of the first spring blade, along its entire length, thus ensuring precise movement of the damping system when subjected to the weight of a user. The first spring blade therefore retains its flexibility while preventing any twisting.

[0066] In an additional embodiment, the first assembly means comprise a first piece having, along a first distal portion, a U-shaped cross-section opposite the groove, the first piece being assembled to the support along a first proximal portion by means of at least one first pin passing through the support and the first piece, the first end being disposed between the at least one first pin and the first distal portion.

[0067] It is understood here that the concepts of proximal and distal portions will be taken into consideration with regard to the position of the portions relative to a longitudinal central position of the first spring blade and the support. In other words, the first part is oriented so that the first proximal portion is located closer to the center of the first spring blade and the support than the first distal portion.

[0068] It is also understood that the first pin is arranged so as to extend transversely to the groove, thus forming a first obstacle to the movement of the first end in the groove and positioned longitudinally according to the first proximal portion, the first distal portion completing and closing the groove and forming a second obstacle to the movement of the first end in the groove.

[0069] A person skilled in the art understands that the first end is held in position between at least one first pin and the first distal portion and cannot easily detach from the support. This positioning is, for example, complementary to other first assembly means as described below, or a replacement for them, thus allowing a certain degree of freedom of movement to the first end, while keeping it assembled with the support.

[0070] A person skilled in the art will further understand that the cooperation between the U-shaped cross-section of the support and that of the first part greatly stiffens the assembly formed by them against potential torsional forces that could deform the support and misalign the movement of the spring blade. Such an improvement in rigidity is also described with regard to the embodiments below. After.

[0071] In particular, this design allows the rotation of the first end to be greatly freed about the first axis, minimizing friction or any other opposing force and allowing the spring blade to relax and compress while minimizing the resulting deformations with respect to the first end.

[0072] Advantageously, the second assembly means comprise a second piece having, along a second distal portion, a U-shaped cross-section opposite the groove, the second piece being assembled to the support along a second proximal portion by means of at least one second pin passing through the support and the second piece, the second end being disposed between the at least one second pin and the second distal portion.

[0073] It is understood here that the second part and the second pin are assembled in a complementary manner to the first part and the first pin according to a substantially symmetrical design of the damping system, or according to a dimensioning adapted to two distinct displacement intervals of the first end and the second end according to an asymmetrical design of the damping system.

[0074] It is also understood that the notions of second distal and proximal portion will be taken into consideration of their position with respect to a longitudinal central position of the spring slat and the support, and that the advantages relating to the stiffening of the support and the sliding of the second end in the groove are similar to those described with respect to the first part and the first end.

[0075] Preferably, the first assembly means further comprise a removable pin passing through the support and the first part and disposed between at least one first pin and the first distal portion, the first end being disposed between at least one first pin and the pin.

[0076] It is understood here that the pin replaces the first distal portion as a second obstacle to the movement of the first end in the groove, allowing the assembly of the first end with the support to be designed and dimensioned independently, by positioning it between at least one first pin and the pin, and the stiffening of the support by restricting its torsion with the first distal portion.

[0077] It is further understood that the removable nature of the pin, as presented above, makes it easier to assemble and disassemble the damping system, the first end being able to be put in position before engaging the pin.

[0078] In an advantageous embodiment, the system further comprises an elastic reinforcement assembled with the support and an intermediate portion of the first slat spring.

[0079] It is understood here that the elastic reinforcement makes it possible to ensure in all situations a minimum force to keep the second end in contact with the receiving face, for example a minimum force to oppose the release of the first spring slat beyond a certain level, or a minimum force operating in the event of lifting or turning over of the damping system.

[0080] The elastic reinforcement thus prevents the second end from separating from the receiving face, or more generally, holds the second end against the receiving face, with the same advantages as listed above with respect to the second assembly means. This design makes it possible, in particular, to achieve retention in the absence of second assembly means, that is, by maintaining a substantially free translation of the second end. Such a design is particularly advantageous for generating restoring forces centered towards the first end, for example, to generate an additional thrust in a direction opposite to the position of the first end relative to a central position of the damping system.

[0081] In a particular embodiment, the system includes means for reducing friction between the second end and the receiving face.

[0082] It is understood here that the means of reducing friction make it possible to limit the wear of the second end and the receiving face and to avoid forces between the two elements, in particular an adhesion of the second end on the receiving face generating irregular behavior.

[0083] Preferably, the friction reduction means comprise at least one roller disposed between the second end and the receiving face.

[0084] In other words, at least one roller serves as an intermediary between the second end and the receiving face, the rotation of at least one roller accompanying the movement of the second end with respect to the receiving face in at least one direction, preferably along the second axis.

[0085] Obviously, it is possible to conceive of a plurality of ways of implementing at least one roller, for example, a plurality of bearings assembled on the second end and oriented towards the receiving face or, conversely, assembled on the receiving face according to a longitudinal interval of displacement of the second end. According to another example, a roller is assembled with the second end engaging in a groove disposed on the receiving face and defining the longitudinal interval of the second end, for example, a roller with a cross-section substantially equal to an internal section of a support having a U-shaped cross-section.

[0086] In another embodiment, the means for reducing friction include a non-stick coating positioned between the second end and the receiving face.

[0087] The non-stick coating is, for example, located on the second end and / or on the receiving face and is made from a non-stick material, for example polytetrafluoroethylene, known as Teflon®. This design makes it possible in particular to reduce the number of parts used and the volume of the damping system.

[0088] In a specific embodiment, the damping system includes third means for assembling the second spring slat with the support.

[0089] It is understood here that the third assembly means prevent any disengagement or lateral displacement of the second spring blade relative to the support, so as to ensure consistent performance and keep the second spring blade substantially centered, while allowing the third and fourth ends to slide freely relative to the first spring blade. The third assembly means correspond, for example, to removable assembly means, such as a screw-nut system, allowing the second spring blade to be easily changed and replaced, or to alternate between operation with and without the second spring blade, for example, in order to adapt the damping system to a wider weight range by removing the second spring blade for lighter loads.

[0090] A second aspect of the present invention relates to a kit for a damping system, the kit comprising a rigid support assembled to a first spring slat, the kit comprising a plurality of second spring slats each having distinct dimensions, each of the second spring slats being able to be assembled in a removable manner with the rigid support and the first spring slat so as to form the damping system according to the first aspect of the invention.

[0091] It is understood here that the kit is configured to allow the integration of a variety of second spring blades into the damping system. The selection of a second spring blade allows for the creation of a range of damping systems with varying characteristics in terms of power, resistance, and / or flexibility, while maintaining the compactness of the damping system and without significantly increasing its weight. The plurality of second spring blades corresponds, for example, to a set of second spring blades of variable width, within a range extending up to the width of the first spring blade and / or the support.

[0092] A third aspect of the present invention relates to an article receiving a damping system according to the first aspect of the invention.

[0093] It is understood here that the article receives the damping system so that the damping system receives at least partially the weight of the article and / or of a user of the item during its movement and / or use.

[0094] The damping system serves for example as an intermediary between the article and the ground, or between user reception means arranged on the article and a structure of the article.

[0095] Preferably, the support for the damping system forms a single unit with the article.

[0096] It is understood here that the damping system is integrated into the article through a joint design, in which a part of the article forms the support for the damping system, so as to form a compact assembly between the article and the damping system. Such a design thus simplifies the overall structure of the article receiving the damping system, by reusing the structure of the article to constitute a fixed part of the damping system, a moving part consisting, for example, of the spring blades and optionally other elements of the support moving directly relative to the article.

[0097] In one embodiment, the article is of the footwear article type, for which the first assembly means of the cushioning system are arranged along a heel of the footwear article, the first spring slat extending towards the front of the footwear article.

[0098] In other words, the cushioning system is received by the sole of the footwear article, the cushioning system reducing shocks and accompanying movements at the level of the sole.

[0099] Preferably, the support forms a single unit with a sole of the footwear article.

[0100] It is understood here that the one-piece design of the support and the article is such that the sole of the footwear article forms at least partially the support of the cushioning system received by the article, in particular within the framework of a joint design of the footwear article and the cushioning system or an assembly of the elements of the cushioning system directly on the sole of the article.

[0101] In another embodiment, the footwear article has a sole forming a housing receiving the cushioning system.

[0102] In other words, the cushioning system is arranged inside the sole of the footwear article.

[0103] It is understood here that the enclosure limits the possible movements of the support and the first spring blade by constraining them within a defined volume. In order to allow the deformation of the first spring blade, the enclosure is itself semi-rigid and / or flexible, that is to say, it can compress and expand up to a maximum volume, the maximum volume defining the maximum extension of the first spring blade and preventing the detachment of the second end.

[0104] It is further understood that the enclosure optionally has a permeability allowing free passage of air in order to avoid any pressure effect, while blocking possible infiltrations of water, snow or other non-gaseous materials that could weigh down or clog the system.

[0105] In an additional embodiment, the damping system includes a reproduction of the sole arranged along an external face of the first spring slat.

[0106] It is understood here that the cushioning system is arranged so that the support is joined to or in contact with the footwear, the first spring blade coming into direct contact with the ground. The sole reproduction thus facilitates walking and corresponds, for example, to secondary cushioning means that adhere to the ground.

[0107] In yet another embodiment, the article presents a body and a seat, and the damping system is disposed between the body and the seat.

[0108] It is understood here that this design corresponds to an integration of a damping system in an article such as a bicycle or wheelchair, the seat corresponding to a seat of the article, the damping system softening the user's reception by the article, or, in the case of a bicycle saddle, creating an additional impulse with each pedal stroke.

[0109] Preferably, the support for the damping system forms a single unit with the body of the article.

[0110] It is understood here that the one-piece design of the support and the article is such that the body of the article forms at least partially the support of the damping system received by the article.

[0111] Naturally, a plurality of articles suitable for receiving a damping system according to the first aspect of the invention are similarly envisaged. The article belongs, for example, to a set of articles comprising: - an artificial limb such as a prosthesis or robot, for example combined with footwear; and - a seat such as a piece of furniture seat, wheelchair seat, bicycle seat, motorcycle seat, vehicle seat, or riding saddle; and - an individual suspension system such as a bicycle pedal, Segway suspension, skateboard suspension, snowboard suspension, or scooter suspension; and - a suspension system for land vehicles such as automobiles, trailers, and trolleys; and - a watercraft suspension system that dampens variations in water height, or acts as a suspended "foil," for example, for watercraft such as catamarans, motorboats or sailboats, hydrofoils, or jet skis; and - a wing suspension system for an aircraft designed to dampen air turbulence; and - a bedding suspension, baby cradle or bassinet.

[0112] The exact dimensioning of the damping system, as well as the choice of materials or the curvature of the first spring slat, is then adapted to the article receiving it.

[0113] Thus, through the various functional and structural characteristics described above, the Applicant proposes a simplified and compact cushioning system that allows, in particular, the use of spring blades while avoiding the risks associated with maximum compression and maintaining its performance over time. Such a system can notably be integrated into footwear so as to support walking movements without restricting the user's mobility. Brief description of the figures

[0114] Other features and advantages of the present invention will become apparent from the description below with reference to the attached Figures 1 to 22, which illustrate a plurality of embodiments and are not intended to be limiting, and on which:

[0115] [Fig.1]

[0116] Fig. 1 represents a schematic profile view of a damping system according to a first embodiment of the present invention;

[0117] [Fig.2]

[0118] Fig. 2 represents a schematic profile view of a damping system according to a second embodiment of the present invention;

[0119] [Fig.3]

[0120] Fig. 3 represents a schematic profile view of a damping system according to a third embodiment of the present invention;

[0121] [Fig.4]

[0122] Fig. 4 represents a schematic top view of a damping system conforming to Fig. 3;

[0123] [Fig.5]

[0124] Fig. 5 represents an exploded view of a damping system conforming to Fig. 3;

[0125] [Fig.6]

[0126] Figure 6 represents an exploded view of a damping system according to a fourth embodiment of the present invention;

[0127] [Fig.7]

[0128] Figure 7 represents an exploded view of a damping system according to a fifth embodiment of the present invention;

[0129] [Fig.8]

[0130] Fig. 8 represents a schematic profile view of a damping system according to a sixth embodiment of the present invention;

[0131] [Fig.9]

[0132] Fig. 9 represents a schematic profile view of a damping system according to a seventh embodiment of the present invention;

[0133] [Fig. 10]

[0134] Fig. 10 represents a schematic profile view of a damping system according to an eighth embodiment of the present invention;

[0135] [Fig. 11]

[0136] Fig. 11 represents a schematic profile view of a damping system according to a ninth embodiment of the present invention;

[0137] [Fig. 12]

[0138] Fig. 12 represents a schematic profile view of a damping system according to one tenth embodiment of the present invention;

[0139] [Fig. 13]

[0140] The [Fig. 13] represents an exploded view of a damping system conforming to the [Fig. 12];

[0141] [Fig. 14]

[0142] Fig. 14 represents a schematic profile view of a damping system according to an eleventh embodiment of the present invention;

[0143] [Fig. 15]

[0144] Fig. 15 represents a schematic profile view of an article receiving a damping system according to a twelfth embodiment of the present invention;

[0145] [Fig. 16]

[0146] Fig. 16 represents a schematic profile view of a footwear item receiving a cushioning system according to a thirteenth embodiment of the present invention;

[0147] [Fig. 17]

[0148] Fig. 17 represents a schematic profile view of a footwear item receiving a cushioning system according to a fourteenth embodiment of the present invention;

[0149] [Fig. 18]

[0150] Fig. 18 represents a schematic profile view of a first footwear item receiving a cushioning system conforming to Fig. 9;

[0151] [Fig. 19]

[0152] Fig. 19 represents a schematic profile view of a second footwear item receiving a cushioning system conforming to Fig. 9;

[0153] [Fig.20]

[0154] Fig. 20 represents a schematic profile view of an article receiving a damping system conforming to Fig. 3;

[0155] [Fig.21]

[0156] Figure 21 represents a schematic profile view of an article conforming to Figure 20 and having a seat; and

[0157] [Fig.22]

[0158] Fig. 22 represents a schematic profile view of an article receiving a damping system conforming to Fig. 12. Detailed description

[0159] The present invention will now be described in the following text with joint reference to Figures 1 to 22 attached to the description. The same elements are identified with the same reference numerals throughout the following description.

[0160] As stated in the preamble to the description, current cushioning system solutions cannot be integrated into footwear articles without hindering walking movements.

[0161] One of the objectives of the present invention is to enable the integration of a cushioning system into a footwear article in an ergonomic manner adapted to the movements of walking, running and jumping, according to a design that is both lightweight, compact, and robust over the entire range of use of the cushioning system.

[0162] This is made possible in the examples described below, which consider a shoe-type footwear article receiving a cushioning system, as well as other bicycle-type or wheelchair-type articles receiving the same cushioning system.

[0163] It is understood here that these examples are not limiting and that the invention will find other applications for the integration of damping systems into a variety of articles, for example into upholstery articles or vehicle suspensions.

[0164] According to the example in Figures 16 to 19, a damping system developed within the framework of this is associated with an article 200, here an article 200 of the footwear article type.

[0165] According to other examples, a damping system 100 is provided in association with another article 200, in particular with regard to figures 20 and 21 corresponding for example to the association of a damping system with a bicycle and of [Fig.22] corresponding for example to the association of a damping system with a wheelchair type article.

[0166] In order to receive the weight of the user of article 200, the cushioning system 100 is, for example, associated with a sole 210 of a footwear article (Figures 16 to 19), that is, arranged so as to come between the foot of a user and the ground, or arranged between a body 230a, 230b and a seat 240a, 240b of an article such as a wheelchair, bicycle, or more generally any article having a seat 240a, 240b (Figures 20 to 22). [Fig. 15] also illustrates a cushioning system 100 partially integrated with the body of an article 200 receiving the cushioning system 100, for example with the body of a wheelchair similar to that illustrated in [Fig. 22]. In other words, according to the example in [Fig.15], the support 110 forms a single unit with the article 200.

[0167] The cushioning system 100 is for example designed to be arranged adjacent to the sole 210 ([Fig. 16]), in particular so as to associate a cushioning system 100 with a standard footwear article, i.e. to adapt a basic model of cushioning system 100 to a variety of footwear articles or more generally to a plurality of articles 200.

[0168] According to other examples, the cushioning system 100 is designed specifically to be associated with the sole 210, for example so as to form a single unit with the sole 210, for example to a sole with means for attaching a shoe or a foot according to [Fig.17], or to be integrated inside a sole 210 that is at least partially hollowed out ([Fig.18]), either permanently or removably depending on the accessibility of the inside of the sole 210.

[0169] Naturally, a cushioning system 100 specifically designed for association with a given article 200 or with a particular type of article is also provided, for example, a cushioning system 100 sized to the scale of the article 200 or to the scale of a standard model of an article type, for example, to the scale of a saddlery article. According to the example in [Fig. 19], the cushioning system 100 is, for example, sized to be removably positioned inside a closed article 200, for example, a soft bootie-type footwear article having a deformable sole 210, the cushioning system 100 being superimposed on the sole 210 of the article 200 and being, for example, itself covered by an insole 230.

[0170] According to the example in Figures 1 to 15, the damping system 100 comprises a first spring slat 120 having a first end 121 and a second end 122. Advantageously, the first spring slat 120, called the first slat, has a curved shape between the ends 121, 122 and is able to deform elastically by bringing the first and second ends 121, 122 closer together or further apart, that is to say by changing the curvature of the curved shape of the first slat 120.

[0171] In this same example, the first slat is assembled along its first end 121 with a rigid support 110 by means of first assembly means, for example, as illustrated in Figures 1, 2 and 15, via a hinge 131 assembled with the first end 121 and the support 110 and allowing a rotational movement between the first end 121 and the support 110 along a first axis defined by the hinge 131.

[0172] In accordance with the underlying concept of the invention, the first slat 120 and the support 110 are assembled by means of the hinge 131 and the first end 121 such that the first curved slat 120 extends along the support 110 in a convex (or convex) path, the second end 122 being brought into contact with a receiving face 111 of the support 110, the receiving face 111 extending in a plane. The support 110 is, for example, itself flat, or corresponds to a flat portion of the article 200 with which it is incorporated, according to the example in [Fig. 15].

[0173] During the compression and / or release of the first slat 120, for example when the user of the item 200 in Figures 16 to 22 presses down on the item 200, the item 200 transmitting the user's weight to the damping system 100 (for example via the sole 210 or the seat 240a, 240b), the first end 121 is consequently rotated relative to the support 110 along the first axis defined by the first assembly means, while the second end 122, in contact with the receiving face 111, moves along the receiving face 111, for example along a second axis perpendicular to the first axis and lying in the plane of the receiving face 111. The first slat 120 thus dampens the user's weight, improving the comfort of using the item. 200.

[0174] In particular, during the release of the first slat 120, the restoring force of the first slat 120 accompanies the release movement of the first slat 120 and is transmitted to the article 200, i.e., to the user, which generates a rebound. This design makes it possible, for example, to accompany the walking motion of a user wearing an article 200 of the footwear type, to create an additional impulse with each pedal stroke on a bicycle and thus increase the thrust, or to facilitate the lifting of a user wearing an article 200 of the wheelchair type.

[0175] In a specific design suitable for combining the cushioning system 100 with a footwear item 200 for walking and / or running, as illustrated in Figures 16 to 19, the first assembly means are arranged along the heel 220 of the footwear item, with the first slat 120 extending towards the front of the footwear item, so that the user's foot strike, beginning with the heel, is accompanied in rotation by The rotation of the first end 121 causes the second end 122 to slide towards the toe of the footwear before it is put on. When the user's foot lifts, the restoring forces of the first blade 120 are primarily transmitted via the support 110 and the heel 220 through the first end 121, particularly when the second end 122 is completely free. The rebound is thus mainly generated towards the rear of the user's foot, accompanying their forward movement.

[0176] In order to further assist the user's gait and to approximate the normal use of footwear, an optional sole replica 171 is provided, as illustrated in [Fig. 17], positioned along the face of the cushioning system 100 in contact with the ground and adhering to the ground. According to the example in [Fig. 17], the sole replica 171 is thus positioned along an external face of the first slat 120. The concept of external face is clearly understood by taking into account the position of the first slat 120 in the cushioning system 100, that is to say, here, the face of the first slat 120 opposite the support 110.

[0177] Obviously, it is possible to adapt the arrangement of the cushioning system 100 to the expected gait of the user of the footwear article or to the expected use of the article 200 when it is associated with the cushioning system 100. It is thus possible to design alternative arrangements of the cushioning system 100, for example in association the cushioning system 100 with the sole 210 of a footwear article via the first slat 120 rather than via the support 110, or a footwear article comprising two cushioning systems 100 arranged in opposition according to its heel and toe, so as to facilitate the placement of the foot both by the heel and by the toe.

[0178] It is also provided, in particular according to the example of [Fig.18], that an article 200 has a base 210 which is at least partially hollow and has an upper wall and a lower wall, the system 100 being integrated between the two walls of the base 210 and arranged so that the support 110 is, according to the design, fixed and / or in contact with the upper wall or the lower wall, the first slat 120 being fixed and / or in contact according to its intermediate portion with the wall opposite to that associated with the support 110. In other words, the article 200 has a double base comprising an upper base forming the upper wall and a lower base forming the lower wall, the system 100 being arranged between the upper base and the lower base.

[0179] In addition to the arrangement of the first assembly means, depending on the simplicity of manufacture, the compactness of the damping system 100, the expected wear of the first assembly means, the freedom of rotation of the first end 121 with respect to the support 110, or the expected amplitude of the de formation of the first slat 120, a variety of means of implementation of the first means of assembly between the support 110 and the first end 121 are also provided, illustrated in figures 3,6 to 14, 18, 19 and 21.

[0180] The first means of assembly include, for example:

[0181] - a half-hinge 133 associated with a first rod 138a forming a pivot joint with support 110 ([Fig.6]); or

[0182] - a first rod 138a passing through the first end 121 and the support 110 for to form a pivot joint ([Fig.7]), the first rod 138a being replaceable by a removable pin 138b; or

[0183] - a screw-nut assembly 135 ([Fig.8]); or

[0184] - simple adhesive means 136 (Figures 9, 18 and 19), for example tape high-strength gaffer-type adhesive.

[0185] According to a particular embodiment illustrated in Figures 10 and 11, the first assembly means comprise an assembly formed by a first rod 138a or a removable pin 138b, assembled on one side with the first end 121, and on the other side with at least one first slot 139 formed on the support 110 and allowing the translation of the first rod 138a or pin 138b. According to yet another embodiment (not illustrated here), the first rod 138a corresponds to a pin extending from the first end 121 and forms a single piece with it. It is understood here that the translation of the first rod 138a or the pin 138b in the first slot 139 makes it possible to center the rebound effect generated by the release of the first slat 120 in order to reduce or avoid the thrust effects described above.

[0186] The invention also covers any other variant of first means of assembly known to the person skilled in the art and allowing an association of the first slat 120 and the support 110 ensuring the movements as described above.

[0187] When the first slat 120 compresses and expands, it moves between a curved position corresponding to maximum expansion and a position of maximum compression, in which the first slat 120 lies flat against the support 110. A problem arises because, as the first slat 120 approaches its maximum compression position, its restoring force decreases. The rebound generated by the expansion of the first slat 120 is then greatly reduced, which on the one hand limits the performance of the damping system 100 under real-world conditions, and on the other hand results in irregular and / or unpredictable behavior, in which the rebound becomes negligible until the first slat 120 expands sufficiently, with a "rebound" effect that can surprise the user.

[0188] To overcome this drawback, a second spring slat 123, referred to as the second slat, is provided in the present invention, as illustrated in Figures 1 to 3 and 5 to 22. Similar to the first slat 120, the second slat 123 has a third end 124 and a fourth end 125, has a curved shape and is able to deform elastically by bringing the third and fourth ends 124, 125 closer together or further apart, that is to say by evolution of the bending of the curved shape of the second slat 123.

[0189] As illustrated in Figures 1 to 3 and 5 to 22, the second lamella 123 is advantageously arranged between the first lamella 120 and the support 110 so that the second lamella 123 extends along a concave (or hollow) path, i.e. in opposition to the first lamella 120. It is further understood that, due to the arrangement of the second lamella 123 between the first lamella 120 and the support 110, the second lamella 123 has a shorter length than the first lamella 120, the third and fourth ends 124, 125 each being in contact with an intermediate section of the first lamella 120.

[0190] Thus, the second slat 123 opposes the compression movement of the first slat 120 and accompanies its rebound. The Applicant observes in particular that this design is especially effective at maintaining rebound power, even when the first slat 120 approaches its maximum compression position. Furthermore, this solution is more robust and offers a better power-to-weight ratio than an elastic band accompanying the rebound of the first slat 120.

[0191] Obviously, the dimensioning of the second slat 123 depends on the desired rebound power for the damping system 100. Thus, according to an alternative embodiment, an assembly kit for the damping system 100 is provided with a plurality of second slats 123 having a variety of dimensions, for example, different widths, allowing the power of the damping system 100 to be adapted by exchanging the second slat 123, without impacting the external dimensions of the damping system 100, the support 110 as well as the first slat 120 not being affected.

[0192] The second slat 123 is thus, for example, freely disposed between the first slat 120 and the support 110 (figures 2, 8, 9, 16 to 22), and, for example, held in position by a different rest position between the first slat 120 and the second slat 123, the first slat 120 then clamping the second slat 123 against the support 110.

[0193] According to a variant illustrated in Figures 3, 5 and 10 to 15, means are provided for assembling the second slat 123 with the support 110, referred to as third assembly means 126. The third assembly means 126 correspond, for example, to removable assembly means, in particular a screw-nut system, and thus prevent any displacement of the second slat 123, in particular an accidental release from the damping system 100 or more generally a de accidental longitudinal placement of the second slat 123. The respective position of the second slat 123 relative to the first slat 120 is thus guaranteed, so as to ensure regular performance in accompanying the release of the first slat 120.

[0194] In parallel with the elasticity of the first slat 120 and the second slat 123, the support 110 is rigid, that is to say resistant to deformation, in particular along the axis of application of the forces of the first slat 120 so as to allow the relative movement of the first slat 120 and the support 110. The support 110 is for example made of materials selected for their rigidity or has a specific structure increasing its resistance along the axis of application of the forces of the first slat 120, for example a honeycomb core.

[0195] According to a particular example illustrated in figures 3 to 14, 16, and 18 to 20, the support 110 has a U-shaped cross-section, thus greatly increasing its resistance to deformation while reducing its weight and thickness, so as to allow for a more ergonomic implementation of the damping system 100.

[0196] The U-shaped cross-section advantageously forms a groove having the receiving face 111, the second end 122 moving inside the groove. The movement of the second end 122 is thus guided along the receiving face 111 more or less strictly depending on the relative widths of the groove and the second end 122. The U-shaped cross-section thus allows the translational guidance of the second end 122 relative to the receiving face 111.

[0197] Advantageously, according to the example in [Fig. 4], the support 110 has a U-shaped cross-section along the entire length of the first spring slat 120, and the respective widths of the first slat 120 and the groove—that is, the first width of the first slat 120 and the second width of the groove—are substantially equal, so that the first slat 120 is adjusted for compression in the groove along its entire length. This design ensures precise guidance of the compression and / or extension movement of the first slat 120 and greatly reduces any torsion about the second axis, thus preventing any tipping during use of the article 200 and reducing the risk of breakage of the first slat 120.

[0198] According to the specific example of Figures 12 to 14 and 22, a first part 191a is provided, having a U-shaped cross-section along a first distal portion. The first part 191a is assembled with the support 110 via a first pin 192a, so that the U-shaped cross-section opposes the groove in the support 110, that is, it closes the groove along the length occupied by the distal portion. This design makes it possible to further stiffen the support 110 while maintaining its lightness, by preventing the lateral faces of the support 110 from spreading apart. when it is subjected to torsional forces.

[0199] The first pin advantageously passes through the support 110 and the first part 191a according to a proximal portion of the first part 191a, for which the assembly of the first part 191a and the support 110 is consequently open for the insertion of the first end 121. The first end 121 is then disposed between the first pin 192a and the first distal portion, allowing the first part 191a and the first pin 192a to form at least partially the first means of assembly.

[0200] According to a variant illustrated by [Fig. 14], the position of the first end 121 is further locked by the insertion of a removable pin 193 disposed between the first end 121 and the first distal portion, facilitating the dismantling of the damping system 100 by removing the pin 193 and the first end 121. When using article 200, this design allows for maintaining play and freeing the rotation of the first end 121 about the first axis.

[0201] In this same example, a second piece 191b is additionally provided, having a U-shaped cross-section along a second distal portion and assembled with the support 110 along a second proximal portion via at least one second pin 192b, for example a plurality of pins forming an additional safety feature and preventing any rotation of the second piece 191b relative to the support 110. The second end 122 is then, in a manner similar to the first end 121, introduced between the second pin 192b and the second distal portion, for example with additional longitudinal clearance facilitating the movement of the second end 122 along the receiving face 111 of the support 110.

[0202] It appears that the example in Figures 12 to 14 presents a substantially symmetrical design. Obviously, it remains within the capabilities of a person skilled in the art to devise an asymmetrical design making use of the groove formed by the support 110 by means of different methods depending on the respective dynamics required between the first end 121 and the second end 122.

[0203] It is further understood that the second part 191b and the second pin 192b form second means for assembling the second end 122 with the support 110, that is, means configured to maintain the second end 122 in contact with the receiving face 111 and providing translational guidance of the second end 122 relative to the receiving face. In other words, the second means for guiding the movement of the second end 122 in the plane of the receiving face 111, while ensuring contact between the second end 122 and the receiving face 111, that is, maintaining the general shape of the damping system 100 without reversing the first slat 120.

[0204] It is understood here that this variant embodiment combines advantageously with the precise adjustment of the widths of the groove and of the first slat 120 as described above with regard to [Fig.4], so that the first slat 120 is perfectly adjusted for its compression and / or release in the groove over its entire length.

[0205] According to other embodiments illustrated in Figures 2, 3, 5 to 8, 10, 11, 16 and 20, the second assembly means comprise a second rod 141a, 141b, 141c assembled with the second end 122 and at least one second slot 142a, 142b provided on the support 110. The at least one second slot 142a, 142b then receives the second rod 141a, 141b, 141c and ensures its translation along the at least one second slot 142a, 142b. The displacement of the second end 122 is then constrained according to the displacement of the second rod 141a, 141b, 141c along the at least one second slot 142a, 142b. The second rod 141a, 141b, 141c corresponds for example to a removable pin 141c as illustrated in [Fig. II],

[0206] In a specific design illustrated in [Fig.2], a single second light 142a is provided along the receiving face 111 and through the support 110, the second rod 141a extending along a third axis perpendicular to the plane of the receiving face 111. The second end 122 has, for example, a complementary orifice to the second rod 141a for its assembly.

[0207] According to another design illustrated in Figures 3, 5 to 8, 10, 11, 16 and 20, a pair of second lights 142b symmetrical to each other are provided on the lateral edges of the support 110, for example the lateral edges of the groove formed by a U-shaped cross-section of the support or the lateral guides 161 (described below) assembled with the support 110. The second rod 141b then extends between the two lights 142b, for example parallel to the first axis, the second end having for example a half-hinge receiving the second rod 141b ([Fig.8]) or having directly an opening allowing the insertion of the second rod 141b ([Fig.7]).

[0208] According to yet another variant illustrated in [Fig. 15], the second assembly means comprise a hollow sliding piece 143 assembled with the second end 122. The sliding piece 143 is for example assembled with the second end 122 by fourth assembly means 144 known to those skilled in the art and comprising among others a hinge, a half-hinge associated with an element forming a pivot connection, a screw-nut assembly or even simple adhesive means.

[0209] The hollow sliding piece 143 fits around the support 110 so as to form a translational guide, the movement of the second end 122 being This is accompanied by the translation of the sliding part 143 relative to the support 110. The sliding part 143 has, for example, a cross-section that is the negative of a cross-section of the support 110, that is, a complementary shape to the support 110, so as to allow the translation of the sliding part 143 and to prevent any rotation. In other words, the clearance between the sliding part 143 and the support 110 is reduced.

[0210] The association of the displacement of the second end 122 with the displacement of the sliding part 143 according to the support 110 makes it possible in particular to stiffen laterally the first slat 120 by constraining its movement and its torsion to the movements of the sliding part 144. The risks of torsion of the first slat 120 outside of its compression and relaxation movements are thus greatly reduced.

[0211] In the example of [Fig. 15], the sliding piece 143 is positioned directly under the second end 122, the respective displacement intervals of the sliding piece 143 and the second end 122 being substantially similar. According to an alternative design, the sliding piece 143 is positioned in line with the first slat 120, i.e., substantially offset longitudinally from the second end 122. Naturally, the exact positioning and dimensions of the sliding piece depend on the desired displacement interval, and therefore on both the compression and expansion interval of the first slat 120 and the geometry of the support 110.

[0212] According to design variants, other alternative or complementary means to the second means of assembly are provided.

[0213] According to a first example illustrated in [Fig. 17], two lateral guides 161 are assembled with the support 110 and arranged on either side of the receiving face 111. The lateral guides 161 are, for example, positioned only along a portion of the support 110 corresponding to the longitudinal displacement range of the second end 122. Advantageously, the lateral guides 161 extend forward beyond the support 110 and are made of an elastic, rubber-like material that absorbs the shock of any contact between the support 110 and another rigid part, for example, the ground, when the footwear 200 of [Fig. 17] is tilted forward. The lateral guides 161 thus prevent any lateral displacement of the second end 122 beyond a margin defined by their relative widths.

[0214] According to another example illustrated by Figures 1 and 17, an elastic reinforcement 181 is assembled with the support 110 and an intermediate portion of the first slat 120, for example a deformable elastic band surrounding the support 110 and the first slat 120. The elastic reinforcement 181 then generates a force that presses the first The first slat 120 is held against the support to prevent any detachment or flipping of the first slat 120. The exact positioning of the elastic reinforcement 181 is adjusted, for example, along the support 110 and the first slat 120 to prevent the second end 122 from detaching while exerting minimal force. The elastic reinforcement 181 is also adjusted, for example, to provide less resistance to the release of the first slat 120 within a defined angular range, or to facilitate or direct the release of the first slat 120 to generate a greater rebound, for example, to facilitate the transfer of forces between the first end 121 and the support 110.

[0215] According to another example illustrated in [Fig. 18], the retention of the second end 122 against the support 110 is ensured by the joint design of the base 210 forming an enclosure for the damping system 100, making it possible to avoid any risk of detachment without adding weight to the damping system 100. The volume of the hollow portion of the base 210 then naturally defines a maximum expansion volume of the first slat 120. Obviously, the article 200 of this example has a semi-rigid or flexible base 210 capable of contracting during the compression of the first slat 120 and of expanding during the expansion of the first slat 120, so as not to hinder the operation of the damping system 100 and to preserve the rebound generated by the first slat 120.

[0216] In order to limit power losses and avoid oversizing the damping system 100, in particular power losses of the first slat 120, means are provided to reduce friction between the second end and the receiving face 111. Such means thus make it possible to facilitate as much as possible the movement of the second end 122 during the compression and / or expansion of the first slat 120 by limiting the impact of any force generated by the non-elastic elements.

[0217] According to an alternative embodiment illustrated in Figures 1, 2, and 17, at least one roller 151 is provided between the second end 122 and the receiving face 111, such that this roller 151 ensures contact and, through its rotation, accompanies the translational movement of the second end 122. This design makes it possible, in particular, to reduce the effects of friction along an axis defined by the orientation of the roller 151, for example, along the second axis as defined above. In this same example, a bearing assembly incorporating the roller 151 is provided, the bearing assembly being connected to the second end 122 and coming into contact with the receiving face 111.

[0218] Obviously, other design variants are also conceivable, for example at least one roller 151 assembled with the receiving face 111, the second end 122 coming into contact with at least one roller 151 and moving vis-à-vis it, for example along a set of rollers 151 arranged according to the longitudinal interval of displacement of the second end 122 on the receiving face 111. According to yet another design, the receiving face 111 has a groove, for example formed by the U-shaped cross-section of the support 110, the groove receiving at least one roller 151 for example in order to restrict the movement of the second end 122 and to provide translational guidance or to ensure a compact design of the damping system by bringing the second end 122 closer to the support 110.

[0219] According to another embodiment, the damping system 100 comprises a non-stick coating disposed between the second end 122 and the receiving face 111, for example, disposed on the receiving face 111, on the second end 122, or on any intermediary means. This design is particularly easily adaptable to any implementation of the damping system 100 and makes it possible to obtain an omnidirectional reduction of friction in the plane of the receiving face 111 without impacting the volume or weight of the damping system 100.

[0220] Thus, it will be understood that the present invention provides a damping system for an article, for example, a footwear article, capable of absorbing shocks and generating rebound propulsion, while being more compact and allowing for a wider range of movement than existing solutions. This damping system features, in particular, a design incorporating a second internal spring blade within the system, improving rebound performance during maximum compression of the damping system while maintaining a robust and durable design. The behavior of the damping system is therefore more consistent without negatively impacting its dimensions and with a negligible change in weight.

[0221] This cushioning system is particularly suitable for association with footwear in order to support walking, running or jumping movements, but can naturally also be integrated into and sized for a variety of articles benefiting from compact cushioning, such as suspension systems, saddlery or bedding articles, and / or reproducing similar movements, for example bicycle or gyropod pedals or prostheses or artificial limbs.

[0222] It should be noted that this detailed description relates to a particular embodiment of the present invention, but in no way does this description limit the scope of the invention; on the contrary, its purpose is to remove any possible inaccuracy or misinterpretation of the following claims.

[0223] It should also be noted that the reference signs in parentheses in the following claims are in no way limiting; These symbols are solely intended to improve the intelligibility and understanding of the claims that follow, as well as the scope of the protection sought.

Claims

Demands

1. A depreciation system (100) for item (200), said system comprising: - a rigid support (110) having at least one face (111), called the receiving face, extending along a plane; - a first spring blade (120) comprising a first end (121) and a second end (122), said first spring blade (120) having a curved shape between said ends (121, 122); and - of the first means of assembling said first end (121) with said support (110), said first spring blade (120) extending along said support (110) in a convex trajectory such that said second end (122) is brought into contact with said receiving face (111) and capable of moving in said plane during the compression and / or relaxation of said first spring blade (120), characterized in that said system further comprises a second spring blade (123) having a third end (124) and a fourth end (125), said second spring blade (123) being disposed between said first spring blade (120) and said support (110), said second spring blade (123) extending along said support (110) in a concave trajectory,said second spring blade (123) being in contact with said support (110) along an intermediate portion of said second spring blade (123) and in contact with said first spring blade (120) along said third and fourth ends (124, 125).

2. Damping system (100) according to claim 1, wherein said first assembly means comprise: - a hinge (131) assembled with said first end (121) and said support (110); or - a half-hinge (133) assembled with said first end (121) and a pivot joint arranged between said half-hinge (133) and said support (110); or - a screw-nut assembly (135) assembled with said first end (121) and said support (110); - a first rod (138a) passing through said first end (121) and said support (110) to form a pivot joint; - a removable pin (138b) passing through said first end (121) and said support (110) to form a pivot joint; - a first rod (138a) assembled with said first end (121) and at least a first slot (139) provided on said support (110); or - a removable pin (138b) assembled with said first end (121) and at least a first slot (139) provided on said support (110).

3. Damping system (100) according to claim 1 or 2, further comprising second means for assembling said second end (122) with said support (110), said second means for assembling said second end (122) in contact with said receiving face (111) and providing translational guidance of said second end (122) with respect to said receiving face (111).

4. Damping system (100) according to claim 3, wherein said second assembly means comprise a second rod (141a, 141b, 141c) assembled with said second end (122) and at least one second light (142a, 142b) provided on said support (110), said at least one second light (142a, 142b) receiving said second rod (141a, 141b, 141c) and ensuring its translation along said at least one second light (142a, 142b).

5. Damping system (100) according to claim 3, wherein said second assembly means comprise a hollow sliding piece (143) assembled with said second end (122), said sliding piece (143) being configured to fit around said support (110) so as to form a translational guide along an axis parallel to the axis of movement of said second end (122).

6. Damping system (100) according to any one of claims 1 to 5, wherein said support (110) has at least partially a U-shaped cross-section forming a groove, said second end (122) moving inside said groove.

7. Damping system (100) according to claim 6, wherein said support (110) has said U-shaped cross-section along the entire length of said first spring blade (120), and wherein said first spring blade (120) has a first width and said groove has a second width, said first width and said second width being equal so as to achieve a precise adjustment of the compression of said first spring slat (120) in said groove.

8. Damping system (100) according to any one of claims 6 or 7 in combination with claim 3, wherein said first assembly means comprise a first part (191a) having, in a first distal portion, a U-shaped cross-section opposite said groove, said first part (191a) being assembled to said support (110) in a first proximal portion by means of at least one first pin (192a) passing through said support (110) and said first part (191a), said first end (121) being disposed between said at least one first pin (192a) and said first distal portion, and wherein said second assembly means comprise a second part (191b) having, in a second distal portion, a U-shaped cross-section opposite said groove,said second piece (191b) being assembled to said support (110) along a second proximal portion by means of at least one second pin (192b) passing through said support (110) and said second piece (191b), said second end (122) being disposed between said at least one second pin (192b) and said second distal portion (191b).

9. Damping system (100) according to claim 8, wherein said first assembly means further comprise a removable pin (193) passing through said support (110) and said first piece (191a) and disposed between said at least one first pin (192a) and said first distal portion (191a), said first end (121) being disposed between said at least one first pin (192a) and said pin (193).

10. Damping system (100) according to any one of claims 1 to 9, which includes means for reducing friction between said second end (122) and said receiving face (111).

11. Damping system (100) according to any one of claims 1 to 10, which includes third means for assembling said second spring slat (123) with said support (110).

12. Kit for a damping system, said kit comprising a rigid support (110) assembled to a first spring leaf (120), said kit comprising a plurality of second spring leaves (123) having each of the distinct dimensions, each of said second spring slats (123) being able to be removably assembled with said rigid support (110) and said first spring slat (120) so as to form said damping system (100) according to any one of claims 1 to 11.

13. Article (200) receiving a damping system (100) according to any one of claims 1 to 12.

14. Article (200) according to claim 13, wherein said support (110) of said damping system (100) forms a single unit with said article (200).

15. Article (200) according to claim 13 or 14, said article (200) having a body (230a, 230b) and a seat (240a, 240b), in which said damping system (100) is disposed between said body (230a, 230b) and said seat (240a, 240b).

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