EP2111770A1 - Sole of a shoe with shock absorbing properties and shoe comprising such a sole. - Google Patents
Sole of a shoe with shock absorbing properties and shoe comprising such a sole. Download PDFInfo
- Publication number
- EP2111770A1 EP2111770A1 EP08103721A EP08103721A EP2111770A1 EP 2111770 A1 EP2111770 A1 EP 2111770A1 EP 08103721 A EP08103721 A EP 08103721A EP 08103721 A EP08103721 A EP 08103721A EP 2111770 A1 EP2111770 A1 EP 2111770A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sole
- foot
- arch
- edge
- shoe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000035939 shock Effects 0.000 title description 2
- 210000002683 foot Anatomy 0.000 claims abstract description 65
- 210000001872 metatarsal bone Anatomy 0.000 claims abstract description 9
- 229920006324 polyoxymethylene Polymers 0.000 claims abstract description 6
- -1 polyoxymethylene Polymers 0.000 claims abstract description 5
- 229930040373 Paraformaldehyde Natural products 0.000 claims abstract description 4
- 210000000474 heel Anatomy 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 12
- 210000004744 fore-foot Anatomy 0.000 claims description 9
- 239000013013 elastic material Substances 0.000 claims description 6
- 210000001361 achilles tendon Anatomy 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 210000003371 toe Anatomy 0.000 claims description 4
- 210000000459 calcaneus Anatomy 0.000 claims description 3
- 239000012815 thermoplastic material Substances 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims description 2
- 229920004943 Delrin® Polymers 0.000 abstract description 2
- 229920005176 Hostaform® Polymers 0.000 abstract description 2
- 229920005027 Ultraform® Polymers 0.000 abstract description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 abstract 3
- 229920012196 Polyoxymethylene Copolymer Polymers 0.000 abstract 2
- 239000011354 acetal resin Substances 0.000 abstract 1
- 150000001241 acetals Chemical class 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000000399 orthopedic effect Effects 0.000 description 8
- 238000013016 damping Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 206010020649 Hyperkeratosis Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 208000003643 Callosities Diseases 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 210000000548 hind-foot Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/14—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined made of sponge, rubber, or plastic materials
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/026—Composites, e.g. carbon fibre or aramid fibre; the sole, one or more sole layers or sole part being made of a composite
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/12—Soles with several layers of different materials
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
- A43B7/142—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the medial arch, i.e. under the navicular or cuneiform bones
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
- A43B7/143—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the lateral arch, i.e. the cuboid bone
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
- A43B7/1445—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the midfoot, i.e. the second, third or fourth metatarsal
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/22—Footwear with health or hygienic arrangements with foot-supporting parts with fixed flat-foot insertions, metatarsal supports, ankle flaps or the like
Definitions
- the invention relates to a shoe sole having damping properties, of the orthopedic type or intended to be integrated into a shoe. It also relates to a shoe comprising such a sole.
- the shoes generally comprise a rod forming the top of the shoe and which is intended to cover the top of the foot of the wearer.
- the rod is fixed on a soleplate formed in general of a first mounting and an outsole.
- the first assembly is intended to come into contact with the foot.
- the outsole is generally made of synthetic material and is intended to come into contact with the ground when the user walks with the shoe.
- a lining is interposed between the first mounting and the outsole. This lining is for example synthetic foam and reinforces shock absorption created when the shoe comes into contact with the ground.
- an orthopedic insole has a variable thickness and corrects an orientation or wedging of the foot.
- the movement of the foot during the phase of contact with the ground during walking or running is poorly controlled. If the sole of the shoe is hard, it determines a position imposed on the foot from the beginning of the contact and does not promote the natural damping properties of the foot. If the sole is softer, it deforms allowing movement of the foot, but without controlling this movement.
- the invention relates to a shoe sole having a vault area intended to extend under the arch of a user of the sole, a heel area intended to extend under the heel of the user, an outer edge and an inner edge intended to extend along the respective outer and inner edges of the foot, characterized in that the arch zone is arched upwardly transversely between the outer edge of the sole and the inner edge, the arch zone being able to flatten elastically under the pressure of the foot when the foot is resting on the sole, the largest arrow of the arch being located towards the front of the arch zone intended to extend under the metatarsal bone heads.
- the sole according to the invention allows to guide the shape of the foot when it is in discharge, that is to say without support, facilitating the digging of the foot at the metatarsal heads.
- This form is that naturally taken by the foot.
- the fifth metatarsal head makes contact with the ground, then the first metatarsal head, then the central metatarsal heads (2 nd , 3 rd and 4 th).
- This phenomenon makes it possible to create the effect of dynamic work in torsion of the foot, between the tendency to invert the hindfoot due to the legs and that of the eversion of the forefoot due to the peroniers.
- the forefoot loses its concavity to participate in the depreciation successively.
- the forefoot is stabilized and allows a perfect propulsion of the foot.
- the sole according to the invention accompanies this movement by allowing this flattening and absorbing energy during this movement. This energy absorption achieves damping of the entry into contact with the ground by braking the flattening.
- the sole returns to its arched shape and helps the foot to be propelled off the ground. This phenomenon is explained by the elastic return of the material. It is found that the use of such a sole makes it possible to reduce the formation of corns or calluses, by a regular distribution of the load on the surface of the foot.
- the sole is further arched longitudinally between the front of the arch zone and a rear edge of the heel zone, the rear edge of the heel zone being intended to follow the rearmost part of the calcaneus.
- the sole guides the foot to form the arch when the foot is in a dump.
- the ground attack occurs along the trailing edge and a progressive flattening of the sole is obtained, which accompanies the flattening of the arch.
- this flattening achieves energy absorption to dampen the contact of the foot with the ground. This reinforces the advantages described above.
- the inner edge is more arched than the outer edge. This accompanies the natural shape of the foot.
- the sole has a fulcrum along the rear edge.
- This fulcrum may be substantially in the middle of the rear edge, or on the contrary decentred towards the inside of the foot or to the outside. In these latter cases, gets a pivoting movement of the heel area of the sole that accompanies the foot in the same motion during the attack of the foot on the ground. This movement is a natural movement of the foot when it occurs in the direction of a lowering of the inner edge. In this case, the fulcrum is towards the outside of the sole. However, for the correction of certain defects of the user, it may be useful to cause a pivot in the opposite direction.
- the eccentric fulcrum is obtained for example by twisting the sole in the longitudinal direction.
- the heel area is cup-shaped which is able to flatten under the pressure of the foot when the foot is in support.
- the flattening of the bowl achieves energy absorption to dampen the contact of the foot with the ground.
- the sole includes a forefoot area extending the arch area and intended to extend under the user's toes, the arch lengthening decreasing in the forefoot area.
- the sole comprises a blade of elastic material covered by a layer of lining.
- the blade is selected from a material for its elasticity and flexibility properties, while the lining layer is in a material offering flexibility especially with respect to contact with the foot.
- the lining layer is, for example, made of elastomer foam.
- the elastic material of the blade is for example a thermoplastic material.
- the blade can thus be shaped by thermoforming from a sheet in this material. This is for example polyoxymethylene, optionally filled with glass fibers.
- the sole is made of a compressible material.
- the flattening of the sole is obtained by the compression of the material of the sole.
- the sole comprises on a lower surface at least one wedging element adapted to limit the flexion of the sole.
- the wedging element does not have the effect of canceling the flexing capacity of the sole, but simply of limiting it.
- the sole comprises a liner fixed to the sole and able to at least partially envelop the foot of the user, and at least one elastic band capable of being positioned on the liner.
- the elastic band adhering to the boot, forms a reinforcement to relieve some movements of the user or correct a tendency to a bad positioning of the foot.
- the tension exerted by the elastic band on the sole changes the behavior of the latter during its flattening. The choice of the position, the tension and the stiffness of the elastic band is determined according to the corrections that a practitioner wishes to bring to the foot of the user.
- the elastic band extends under the sole and is intended to go up along the Achilles tendon.
- the invention also relates to a shoe comprising a rod fixed on a sole as described above.
- a sole 1 for a shoe comprises a blade 10 of elastic material covered by a layer of lining 11.
- the sole 1 is intended to be introduced into a shoe in order to provide cushioning properties to the shoe and possibly correction properties . In the latter case, we speak of orthopedic insole.
- the blade 10 is for example a thermoplastic material such as polyoxymethylene, optionally filled with glass fibers.
- a thermoplastic material such as polyoxymethylene, optionally filled with glass fibers.
- Such a material has a POM designation according to an ISO standard and is marketed under the trade names Delrin, Hostaform, Ultraform or Kematal. In a version without load, this material has for example a flexural modulus of elasticity of 2888 MPa. In a version with a load of 25% glass fibers, the flexural modulus of elasticity is 9000 MPa.
- the thickness of the blade 10 is typically between 1 and 5 mm. The material is chosen according to the weight of the user, the thickness of the blade 10 and the desired rigidity of the blade 10. Other fillers such as carbon fibers may be used, as well as other thermoplastics such as polypropylene. Thermosetting synthetic resins can also be used with a molding technique.
- the sole 1 comprises a vault area B intended to extend under the arch of a user of the sole 1 and a heel area A intended to extend under the heel of the user. It extends transversely between an outer edge 12 and an inner edge 13 intended to extend along the outer and outer edges of the foot respectively. It extends longitudinally between a rear edge 14 of the heel area A intended to follow the most back of the calcaneus, and a front edge 15 to extend under the metatarsal bone heads of the user's foot.
- the arch zone B is arched upward transversely between the outer edge 12 of the sole 1 and the inner edge 13.
- the largest arrow of the arch is located forward of the arch zone B, along from the front edge 15. The arrow decreases gradually towards the rear of the sole 1 until canceling in the middle of the sole 1.
- the sole 1 is further arcuate longitudinally between the front edge 15 and the rear edge 14, as can be seen in particular on the figure 3 .
- the arch in the longitudinal direction is more pronounced along the inner edge 13 than the outer edge 12, so that the highest point C of the sole 1 is along the inner edge 13.
- the fulcrum D is substantially in the middle of the rear edge 14
- the heel area A is cup-shaped, as can be seen in particular on the figure 6 .
- such a sole 1 In use, such a sole 1 is placed inside a shoe. When the user walks or runs with this shoe, it transfers its weight on the sole 1 so that it causes at least partial flattening, and thus a damping of the contact with the ground. During the discharge of the foot, the sole 1 resumes its arched forms, restores energy to the foot by giving an impulse, and tends to give the foot a shape close to the natural shape.
- the fulcrum D along the rear edge 24 is shifted towards the outer edge 22, the sole 2 having a twisting in the heel area A.
- the fulcrum is shifted towards the inner edge 23.
- the sole 2 ' is extended by a forefoot area C, intended to extend under the forefoot of the use to under the toes.
- the foot zone C is substantially flat, except in the extension of the arch in the transverse direction, which avoids a sudden break.
- the sole 4 is orthopedic and is complemented by wedging elements.
- These elements are in a flexible but not very compressible material, conventionally used for the manufacture of orthopedic insoles. It can also be a compressible and resilient foam which crushes but returns to initial position
- These wedging elements are fixed under the blade of the sole, for example by gluing. These wedging elements modify the orientation of the sole or limit the flexion thereof, but in any case does not prohibit it.
- the resilient foam they provide a modification of the stiffness of the sole and the damping properties.
- the wedging element 40a extends between the outer edge 42 and the middle of the sole 4a.
- the thickness of the wedging element decreases progressively from the outer edge 42 towards the middle of the sole 4a.
- the wedging element 40b extends between the inner edge 43 and the middle of the sole 4b.
- the thickness of the wedging element decreases progressively from the inner edge 43 towards the middle of the sole 4b.
- the sole 4c of the figure 15c has an element wedge 40c of substantially triangular shape extending under the arch along the front edge of the sole 4c.
- the thickness of the wedging element 4c gradually decreases along its edges.
- the figure 15d represents the sole 4d with two wedging elements 40d, 41d, which are used in principle independently of one another.
- the wedging member 40d has a substantially rectangular shape and extends under the sole along the leading edge 45.
- the wedging member 41d has a substantially rectangular shape and extends under the sole along the rear edge 44.
- the element 40e extends along the outer edge 42 of the sole 4e from the arch zone and towards the front of the foot beyond the front edge 45, over a width of the order of half of the width of the foot.
- the thickness of the wedging element 40e gradually decreases from the outer edge 42 towards the middle of the sole 4e.
- the wedging element 40f extends along the inner edge 43 of the sole 4f from the arch zone and towards the front of the foot beyond the front edge 45, over a width of the order of half the width of the foot.
- the thickness of the wedging element 40f gradually decreases from the inner edge 43 towards the middle of the sole 4f.
- the wedging element 40g on the figure 15g is similar to the wedging element 40a of the figure 15a but it also extends more completely below the heel area A.
- the wedging element 40h has a substantially square shape and extends along the front edge 45 and the outer edge 42 of the sole 4h to the middle of the sole 4h.
- the wedging element 40i of the figure 15i has a substantially square shape and extends along the front edge 45 and the inner edge 43 of the sole 4i to the middle of the sole 4i.
- the sole 4j represented on the figure 15j , comprises a wedging element 40j extending under the heel zone A.
- the wedging element 40j has a bias edge 46j connecting the outer edge 42 and the inner edge 43 being oblique with respect to the longitudinal direction of the soleplate 4j, so that the wedging element 40j has a greater length along the inner edge 43 than along the outer edge 42.
- the wedging element 40k is substantially symmetrical relative to the wedging element 40j of the figure 15j .
- the object of the invention is a shoe 3 comprising a rod 30 fixed on a sole 31 similar to that of the figure 9 .
- a wear layer 37 for example elastomer, is disposed under the sole 31 and is intended to come into contact with the ground.
- the object of the invention is an orthopedic liner comprising a sole 51 on which is fixed a rod 50, for example of elastic textile material.
- the rod 50 can be closed so as to cover the toes, or open so as to leave them out of the liner 5.
- the connection of the rod 50 and the sole is made along the inner and outer edges of the sole and along 14.
- the liner 5 further comprises a repositionable elastic strip 52 which is fixed along the inner edge 13. It is intended to be fixed on the rod 50 by first passing on the Achilles tendon then curling along the bottom of the leg.
- the band 52 is for example covered by a self-gripping system cooperating with the textile of the rod 50. use, a tilting movement of the foot towards the inside of the foot tends to stretch the band 52 which holds this movement, also said eversion movement.
- This shoe 5 provides assistance to a user who has a deficiency of control of this movement.
- the band 52 is fixed along the outer edge 12.
- a band 52 'similar to that of the fourth embodiment is also fixed along the inner edge 13 of the liner 5', but towards the front part of the sole 51.
- the band 52 ' can be fixed on the rod 50 by passing over the kick and then around the ankle and lower leg.
- the support provided by the band 52 ' is similar to the previous case, but being applied to the central part of the foot.
- the band is fixed along the outer edge 12.
- a 5 "slipper has a band 52" attached along the front edge 15 of the sole 50. It can be positioned by passing under the heel area A and up along the Achilles tendon. It allows to support a foot whose arch would tend to flatten too easily, adjust this tension to the foot to correct and adapt to its evolution.
- the band 52 "'of the shoe 5"' is completed by fasteners 53 which allow to bind the band 52 "'at the bottom of the leg and the central part of the foot, over the kick.
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Description
L'invention a pour objet une semelle pour chaussure ayant des propriétés amortissantes, du type orthopédique ou destinée à être intégrée à une chaussure. Elle a aussi pour objet une chaussure comportant une telle semelle.The invention relates to a shoe sole having damping properties, of the orthopedic type or intended to be integrated into a shoe. It also relates to a shoe comprising such a sole.
Les chaussures comportent en général une tige formant le dessus de la chaussure et qui est destinée à couvrir le dessus du pied de celui qui porte la chaussure. La tige est fixée sur une semelle formée en général d'une première de montage et d'une semelle d'usure. La première de montage est destinée à venir en contact avec le pied. La semelle d'usure est en général en matière synthétique et est destinée à venir en contact avec le sol lorsque l'utilisateur marche avec la chaussure. Dans certaines chaussures, un garnissage est interposé entre la première de montage et la semelle d'usure. Ce garnissage est par exemple en mousse synthétique et permet de renforcer un amortissement du choc créé lorsque la chaussure vient en contact avec le sol.The shoes generally comprise a rod forming the top of the shoe and which is intended to cover the top of the foot of the wearer. The rod is fixed on a soleplate formed in general of a first mounting and an outsole. The first assembly is intended to come into contact with the foot. The outsole is generally made of synthetic material and is intended to come into contact with the ground when the user walks with the shoe. In some shoes, a lining is interposed between the first mounting and the outsole. This lining is for example synthetic foam and reinforces shock absorption created when the shoe comes into contact with the ground.
On connaît également une semelle qui est destinée à être insérée dans une chaussure pour modifier les fonctions de l'interface entre le pied et la chaussure. Par exemple, une semelle orthopédique a une épaisseur variable et corrige une orientation ou un calage du pied.There is also known a sole which is intended to be inserted into a shoe to modify the functions of the interface between the foot and the shoe. For example, an orthopedic insole has a variable thickness and corrects an orientation or wedging of the foot.
Dans l'état actuel de la technique, le mouvement du pied lors de phase de prise de contact avec le sol pendant la marche ou la course est mal contrôlé. Si la semelle de la chaussure est dure, elle détermine une position imposée au pied dès le début de la prise de contact et ne favorise pas les propriétés d'amortissement naturel du pied. Si la semelle est plus molle, elle se déforme en autorisant un mouvement du pied, mais sans contrôler ce mouvement.In the current state of the art, the movement of the foot during the phase of contact with the ground during walking or running is poorly controlled. If the sole of the shoe is hard, it determines a position imposed on the foot from the beginning of the contact and does not promote the natural damping properties of the foot. If the sole is softer, it deforms allowing movement of the foot, but without controlling this movement.
C'est donc un objectif de l'invention de proposer une semelle de chaussure et une chaussure permettant de mieux contrôler le mouvement du pied lors de la marche ou de la course et en favorisant les propriétés d'amortissement naturel du pied.It is therefore an object of the invention to provide a shoe sole and a shoe to better control the movement of the foot during walking or running and promoting the natural damping properties of the foot.
Avec ces objectifs en vue, l'invention a pour objet une semelle pour chaussure comportant une zone de voûte destinée à s'étendre sous la voûte plantaire d'un utilisateur de la semelle, une zone de talon destinée à s'étendre sous le talon de l'utilisateur, un bord extérieur et un bord intérieur destinés à s'étendre le long des bords respectivement extérieur et intérieur du pied, caractérisée en ce que la zone de voûte est arquée vers le haut transversalement entre le bord extérieur de la semelle et le bord intérieur, la zone de voûte étant apte à s'aplatir élastiquement sous la pression du pied lorsque le pied est en appui sur la semelle, la flèche la plus importante de l'arche étant située vers l'avant de la zone de voûte destiné à s'étendre sous les têtes osseuses métatarsiennes.With these objectives in view, the invention relates to a shoe sole having a vault area intended to extend under the arch of a user of the sole, a heel area intended to extend under the heel of the user, an outer edge and an inner edge intended to extend along the respective outer and inner edges of the foot, characterized in that the arch zone is arched upwardly transversely between the outer edge of the sole and the inner edge, the arch zone being able to flatten elastically under the pressure of the foot when the foot is resting on the sole, the largest arrow of the arch being located towards the front of the arch zone intended to extend under the metatarsal bone heads.
La semelle selon l'invention permet de guider la forme du pied lorsque celui-ci est en décharge, c'est-à-dire sans appui, en facilitant le creusement du pied au niveau des têtes métatarsiennes. Cette forme est celle naturellement prise par le pied. Lors de la prise d'appui du pied sur le sol, après la prise de contact par le talon, la la cinquième tête métatarsienne entre en contact avec le sol, ensuite la première tête métatarsienne, puis les têtes métatarsiennes centrales (2ème, 3ème et 4ème) . Ce phénomène permet de créer l'effet du travail dynamique en torsion du pied, entre la tendance à l'inversion de l'arrière-pied due aux jambiers et celle de l'éversion de l'avant-pied due aux péroniers. Au fur et à mesure de la prise d'appui, l'avant-pied perd sa concavité pour participer successivement à l'amortissement. Finalement, lorsque les cinq têtes métatarsiennes sont au sol, l'avant-pied est stabilisé et permet une parfaite propulsion du pied. La semelle selon l'invention accompagne ce mouvement en permettant cet aplatissement et en absorbant de l'énergie lors de ce mouvement. Cette absorption d'énergie réalise un amortissement de l'entrée en contact avec le sol par un freinage de l'aplatissement. Lorsque le pied commence à quitter le sol, la semelle reprend sa forme arquée et aide le pied à être propulsé du sol. Ce phénomène s'explique par le retour élastique du matériau. On constate que l'utilisation d'une telle semelle permet de réduire la formation de cors ou de durillons, par une répartition régulière de la charge sur la surface du pied.The sole according to the invention allows to guide the shape of the foot when it is in discharge, that is to say without support, facilitating the digging of the foot at the metatarsal heads. This form is that naturally taken by the foot. When the foot is supported on the ground, after the heel makes contact, the fifth metatarsal head makes contact with the ground, then the first metatarsal head, then the central metatarsal heads (2 nd , 3 rd and 4 th). This phenomenon makes it possible to create the effect of dynamic work in torsion of the foot, between the tendency to invert the hindfoot due to the legs and that of the eversion of the forefoot due to the peroniers. As and when the support, the forefoot loses its concavity to participate in the depreciation successively. Finally, when the five heads metatarsals are on the ground, the forefoot is stabilized and allows a perfect propulsion of the foot. The sole according to the invention accompanies this movement by allowing this flattening and absorbing energy during this movement. This energy absorption achieves damping of the entry into contact with the ground by braking the flattening. When the foot begins to leave the ground, the sole returns to its arched shape and helps the foot to be propelled off the ground. This phenomenon is explained by the elastic return of the material. It is found that the use of such a sole makes it possible to reduce the formation of corns or calluses, by a regular distribution of the load on the surface of the foot.
Selon un perfectionnement, la semelle est arquée en outre longitudinalement entre l'avant de la zone de voûte et un bord arrière de la zone de talon, le bord arrière de la zone de talon étant destiné à longer la partie la plus arrière du calcanéum.According to an improvement, the sole is further arched longitudinally between the front of the arch zone and a rear edge of the heel zone, the rear edge of the heel zone being intended to follow the rearmost part of the calcaneus.
En plus de l'arche transversale, la semelle guide le pied pour former la voûte plantaire lorsque le pied est en décharge. L'attaque du sol se produit le long du bord arrière et on obtient un aplatissement progressif de la semelle, qui accompagne l'aplatissement de la voûte plantaire. Comme précédemment, cet aplatissement réalise une absorption d'énergie pour amortir la prise de contact du pied avec le sol. On renforce ainsi les avantages exposés précédemment.In addition to the transverse arch, the sole guides the foot to form the arch when the foot is in a dump. The ground attack occurs along the trailing edge and a progressive flattening of the sole is obtained, which accompanies the flattening of the arch. As before, this flattening achieves energy absorption to dampen the contact of the foot with the ground. This reinforces the advantages described above.
De manière particulière, le bord intérieur est plus arqué que le bord extérieur. On accompagne ainsi la forme naturelle du pied.In particular, the inner edge is more arched than the outer edge. This accompanies the natural shape of the foot.
Selon une disposition particulière, la semelle comporte un point d'appui le long du bord arrière. Ce point d'appui peut être sensiblement au milieu du bord arrière, ou au contraire décentré vers l'intérieur du pied ou vers l'extérieur. Dans ces derniers cas, on obtient un mouvement de pivotement de la zone de talon de la semelle qui accompagne le pied dans le même mouvement lors de l'attaque du pied au sol. Ce mouvement est un mouvement naturel du pied lorsqu'il se produit dans le sens d'un abaissement du bord intérieur. Dans ce cas, le point d'appui est vers l'extérieur de la semelle. Cependant, pour la correction de certains défauts de l'utilisateur, il peut être utile de provoquer un pivotement dans le sens opposé. Le point d'appui décentré est obtenu par exemple par un vrillage de la semelle dans le sens longitudinal. Lors de l'attaque du pied sur le sol, avec le point d'appui décentré, on obtient une diminution du vrillage de la semelle par une déformation élastique. Comme précédemment, cette diminution du vrillage réalise une absorption d'énergie pour amortir la prise de contact du pied avec le sol. On complète ainsi les avantages exposés précédemment.According to a particular arrangement, the sole has a fulcrum along the rear edge. This fulcrum may be substantially in the middle of the rear edge, or on the contrary decentred towards the inside of the foot or to the outside. In these latter cases, gets a pivoting movement of the heel area of the sole that accompanies the foot in the same motion during the attack of the foot on the ground. This movement is a natural movement of the foot when it occurs in the direction of a lowering of the inner edge. In this case, the fulcrum is towards the outside of the sole. However, for the correction of certain defects of the user, it may be useful to cause a pivot in the opposite direction. The eccentric fulcrum is obtained for example by twisting the sole in the longitudinal direction. During the attack of the foot on the ground, with the decentralized fulcrum, one obtains a reduction of the twist of the sole by an elastic deformation. As before, this reduction of twisting achieves energy absorption to dampen the contact of the foot with the ground. This completes the benefits outlined above.
Selon un autre perfectionnement, la zone de talon est en forme de cuvette qui est apte à s'aplatir sous la pression du pied lorsque le pied est en appui. Dans ce cas également, l'aplatissement de la cuvette réalise une absorption d'énergie pour amortir la prise de contact du pied avec le sol.According to another improvement, the heel area is cup-shaped which is able to flatten under the pressure of the foot when the foot is in support. In this case also, the flattening of the bowl achieves energy absorption to dampen the contact of the foot with the ground.
Selon une variante, la semelle comporte une zone d'avant-pied prolongeant la zone de voûte et destinée à s'étendre sous les orteils de l'utilisateur, l'arche se prolongeant en diminuant dans la zone d'avant-pied.Alternatively, the sole includes a forefoot area extending the arch area and intended to extend under the user's toes, the arch lengthening decreasing in the forefoot area.
Selon un mode de réalisation, la semelle comporte une lame en matériau élastique recouverte par une couche de garnissage. La lame est choisie dans un matériau pour ses propriétés d'élasticité et de flexibilité, tandis que la couche de garnissage est dans un matériau offrant de la souplesse en particulier vis-à-vis du contact avec le pied. La couche de garnissage est par exemple en mousse d'élastomère.According to one embodiment, the sole comprises a blade of elastic material covered by a layer of lining. The blade is selected from a material for its elasticity and flexibility properties, while the lining layer is in a material offering flexibility especially with respect to contact with the foot. The lining layer is, for example, made of elastomer foam.
Le matériau élastique de la lame est par exemple un matériau thermoplastique. La lame peut ainsi être mise en forme par thermoformage à partir d'une feuille dans ce matériau. C'est par exemple du polyoxyméthylène, chargé éventuellement de fibres de verre.The elastic material of the blade is for example a thermoplastic material. The blade can thus be shaped by thermoforming from a sheet in this material. This is for example polyoxymethylene, optionally filled with glass fibers.
Dans un autre mode de réalisation, la semelle est réalisée dans un matériau compressible. L'aplatissement de la semelle est obtenu par la compression de la matière de la semelle.In another embodiment, the sole is made of a compressible material. The flattening of the sole is obtained by the compression of the material of the sole.
Selon une disposition particulière, la semelle comporte sur une surface inférieure au moins un élément de calage apte à limiter la flexion de la semelle. Dans une utilisation orthopédique, on peut moduler un même modèle de semelle pour l'adapter à différents besoins de corrections. L'élément de calage n'a pas pour effet d'annuler la capacité de flexion de la semelle, mais simplement de la limiter.According to a particular provision, the sole comprises on a lower surface at least one wedging element adapted to limit the flexion of the sole. In orthopedic use, it is possible to modulate the same sole model to adapt it to different correction needs. The wedging element does not have the effect of canceling the flexing capacity of the sole, but simply of limiting it.
Selon un perfectionnement, la semelle comporte un chausson fixé à la semelle et apte à envelopper au moins partiellement le pied de l'utilisateur, et au moins une bande élastique apte à être positionnée sur le chausson. La bande élastique, en adhérant au chausson, forme un renfort permettant de soulager certains mouvements de l'utilisateur ou de corriger une tendance à un mauvais positionnement du pied. La tension exercée par la bande élastique sur la semelle modifie le comportement de celle-ci lors de son aplatissement. Le choix de la position, de la tension et de la raideur de la bande élastique est déterminé en fonction des corrections qu'un praticien souhaite apporter au pied de l'utilisateur.According to an improvement, the sole comprises a liner fixed to the sole and able to at least partially envelop the foot of the user, and at least one elastic band capable of being positioned on the liner. The elastic band, adhering to the boot, forms a reinforcement to relieve some movements of the user or correct a tendency to a bad positioning of the foot. The tension exerted by the elastic band on the sole changes the behavior of the latter during its flattening. The choice of the position, the tension and the stiffness of the elastic band is determined according to the corrections that a practitioner wishes to bring to the foot of the user.
Dans un cas particulier, la bande élastique s'étend sous la semelle et est destinée à remonter le long du tendon d'Achille.In a particular case, the elastic band extends under the sole and is intended to go up along the Achilles tendon.
L'invention a aussi pour objet une chaussure comportant une tige fixée sur une semelle telle que décrite précédemment.The invention also relates to a shoe comprising a rod fixed on a sole as described above.
L'invention sera mieux comprise et d'autres particularités et avantages apparaîtront à la lecture de la description qui va suivre, la description faisant référence aux dessins annexés parmi lesquels :
- la
figure 1 est une vue en perspective d'une semelle conforme à un premier mode de réalisation de l'invention ; - la
figure 2 est une vue en plan de la semelle de lafigure 1 ; - la
figure 3 est une vue latérale de la semelle de lafigure 1 ; - la
figure 4 est une vue de face de la semelle de lafigure 1 ; - la
figure 5 est une vue en section selon la ligne V-V de lafigure 2 ; - la
figure 6 est une vue en section selon la ligne VI-VI de lafigure 2 ; - la
figure 7 est une vue arrière de la semelle de lafigure 1 ; - la
figure 8 est une vue similaire à lafigure 7 d'un deuxième mode de réalisation de l'invention ; - la
figure 9 est une variante du deuxième mode de réalisation ; - la
figure 10 est une vue arrière d'une chaussure conforme à un troisième mode de réalisation de l'invention ; - la
figure 11 est une vue latérale d'un quatrième mode de réalisation de l'invention ; - la
figure 12 est une vue latérale d'un cinquième mode de réalisation de l'invention ; - la
figure 13 est une vue latérale d'un sixième mode de réalisation de l'invention ; - la
figure 14 est une vue latérale d'un septième mode de réalisation de l'invention ; - les
figures 15a à 15k sont des vues de variantes de la semelle de lafigure 1 , pour une application d'orthopédie.
- the
figure 1 is a perspective view of a sole according to a first embodiment of the invention; - the
figure 2 is a plan view of the sole of thefigure 1 ; - the
figure 3 is a side view of the sole of thefigure 1 ; - the
figure 4 is a front view of the sole of thefigure 1 ; - the
figure 5 is a sectional view along line VV of thefigure 2 ; - the
figure 6 is a sectional view along line VI-VI of thefigure 2 ; - the
figure 7 is a rear view of the sole of thefigure 1 ; - the
figure 8 is a view similar to thefigure 7 a second embodiment of the invention; - the
figure 9 is a variant of the second embodiment; - the
figure 10 is a rear view of a shoe according to a third embodiment of the invention; - the
figure 11 is a side view of a fourth embodiment of the invention; - the
figure 12 is a side view of a fifth embodiment of the invention; - the
figure 13 is a side view of a sixth embodiment of the invention; - the
figure 14 is a side view of a seventh embodiment of the invention; - the
Figures 15a to 15k are views of variants of the sole of thefigure 1 , for an orthopedic application.
Dans un premier mode de réalisation de l'invention, montré sur les
La lame 10 est par exemple un matériau thermoplastique tel que du polyoxyméthylène, chargé éventuellement de fibres de verre. Un tel matériau a une désignation POM selon une norme ISO et est commercialisé sous les noms de marques déposées Delrin, Hostaform, Ultraform ou Kématal. Dans une version sans charge, ce matériau a par exemple un module d'élasticité à la flexion de 2888 MPa. Dans une version avec une charge de 25% de fibres de verre, le module d'élasticité à la flexion est de 9000 MPa. L'épaisseur de la lame 10 est typiquement comprise entre 1 et 5 mm. Le matériau est choisi en fonction du poids de l'utilisateur, de l'épaisseur de la lame 10 et de la rigidité souhaitée de la lame 10. D'autres charges telles que des fibres de carbone peuvent être utilisées, de même que d'autres matières thermoplastiques tels que du polypropylène. Des résines synthétiques thermodurcissables peuvent aussi être utilisées avec une technique de fabrication par moulage.The
La semelle 1 comporte une zone de voûte B destinée à s'étendre sous la voûte plantaire d'un utilisateur de la semelle 1 et une zone de talon A destinée à s'étendre sous le talon de l'utilisateur. Elle s'étend transversalement entre un bord extérieur 12 et un bord intérieur 13 destinés à s'étendre le long des bords respectivement extérieur et intérieur du pied. Elle s'étend longitudinalement entre un bord arrière 14 de la zone de talon A destiné à longer la partie la plus arrière du calcanéum, et un bord avant 15 destiné à s'étendre sous les têtes osseuses métatarsiennes du pied de l'utilisateur. La zone de voûte B est arquée vers le haut transversalement entre le bord extérieur 12 de la semelle 1 et le bord intérieur 13. La flèche la plus importante de l'arche est située vers l'avant de la zone de voûte B, le long du bord avant 15. La flèche diminue progressivement vers l'arrière de la semelle 1 jusqu'à s'annuler au milieu de la semelle 1.The sole 1 comprises a vault area B intended to extend under the arch of a user of the sole 1 and a heel area A intended to extend under the heel of the user. It extends transversely between an
La semelle 1 est en outre arquée longitudinalement entre le bord avant 15 et le bord arrière 14, comme on peut le voir en particulier sur la
Lors de son utilisation, une telle semelle 1 est placée à l'intérieur d'un chaussure. Lorsque l'utilisateur marche ou court avec cette chaussure, il transfère son poids sur la semelle 1 de telle sorte qu'il provoque son aplatissement au moins partiel, et ainsi un amortissement de la prise de contact avec le sol. Lors de la décharge du pied, la semelle 1 reprend ses formes arquées, restitue de l'énergie au pied en donnant une impulsion, et tend à donner au pied une forme proche de la forme naturelle.In use, such a sole 1 is placed inside a shoe. When the user walks or runs with this shoe, it transfers its weight on the sole 1 so that it causes at least partial flattening, and thus a damping of the contact with the ground. During the discharge of the foot, the sole 1 resumes its arched forms, restores energy to the foot by giving an impulse, and tends to give the foot a shape close to the natural shape.
Dans un deuxième mode de réalisation, montré sur la
Dans une variante du deuxième mode de réalisation, non représentée, le point d'appui est décalé vers le bord intérieur 23.In a variant of the second embodiment, not shown, the fulcrum is shifted towards the
Dans une autre variante du deuxième mode de réalisation, représenté sur la
Dans des variantes représentées sur les
Sur la
Sur la
La semelle 4c de la
La
Sur la
L'élément de calage 40f s'étend le long du bord intérieur 43 de la semelle 4f à partir de la zone de voûte et vers l'avant du pied au delà du bord avant 45, sur une largeur de l'ordre de la moitié de la largeur du pied. L'épaisseur de l'élément de calage 40f diminue progressivement depuis le bord intérieur 43 vers le milieu de la semelle 4f.The wedging
L'élément de calage 40g sur la
Sur la
De manière symétrique, l'élément de calage 40i de la
La semelle 4j, représentée sur la
Dans la semelle 4k de la
Dans un troisième mode de réalisation, représenté sur la
Dans un quatrième mode de réalisation, montré sur la
Dans une variante, non représentée, la bande 52 est fixée le long du bord extérieur 12.In a variant, not shown, the
Dans un cinquième mode de réalisation, montré sur la
Dans une variante non représentée, la bande est fixée le long du bord extérieur 12.In a variant not shown, the band is fixed along the
Dans un sixième mode de réalisation, représenté sur la
Dans le septième mode de réalisation, qui est une variante du sixième mode et représenté sur la
Claims (15)
Priority Applications (1)
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EP20080103721 EP2111770B1 (en) | 2008-04-25 | 2008-04-25 | Sole of a shoe with shock absorbing properties, orthopaedic boot and shoe comprising such a sole. |
Applications Claiming Priority (1)
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EP20080103721 EP2111770B1 (en) | 2008-04-25 | 2008-04-25 | Sole of a shoe with shock absorbing properties, orthopaedic boot and shoe comprising such a sole. |
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EP2111770A1 true EP2111770A1 (en) | 2009-10-28 |
EP2111770B1 EP2111770B1 (en) | 2014-06-18 |
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EP20080103721 Active EP2111770B1 (en) | 2008-04-25 | 2008-04-25 | Sole of a shoe with shock absorbing properties, orthopaedic boot and shoe comprising such a sole. |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2149313A1 (en) * | 2008-07-29 | 2010-02-03 | Cluster Aragones Del Calzado | Method for generating an elastic membrane for supporting the whole of the plantar arch integrated in the shoe and the membrane resulting from this method |
EP2386215B1 (en) * | 2010-05-12 | 2014-03-12 | Helmut Röck Gmbh | Shoe insert and shoe |
EP3153049A1 (en) | 2015-10-05 | 2017-04-12 | Christophe Otte | Plantar arch for orthopaedic sole and associated orthopaedic sole |
ITUA20164287A1 (en) * | 2016-06-10 | 2017-12-10 | Roberto Botter | COMPONENT FOR FOOTWEAR AND FOOTWEAR THAT INCLUDES IT |
WO2018118430A1 (en) * | 2016-12-20 | 2018-06-28 | Nike Innovate C.V. | Energy return footwear plate |
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DE8509263U1 (en) * | 1985-03-28 | 1985-05-09 | Globus Fußstützenfabrik Karl Kremendahl, 5630 Remscheid | Orthopedic shoe insole |
DE9201704U1 (en) * | 1992-02-12 | 1992-07-09 | Paromed Medizintechnik GmbH, 8201 Neubeuern | Insole |
WO2004012548A1 (en) * | 2002-08-06 | 2004-02-12 | Schering-Plough Healthcare Products, Inc. | Insole with arch spring |
EP1813162A1 (en) * | 2004-11-18 | 2007-08-01 | Nichigen Club Co., Ltd. | Sole plate producing method |
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DE8509263U1 (en) * | 1985-03-28 | 1985-05-09 | Globus Fußstützenfabrik Karl Kremendahl, 5630 Remscheid | Orthopedic shoe insole |
DE9201704U1 (en) * | 1992-02-12 | 1992-07-09 | Paromed Medizintechnik GmbH, 8201 Neubeuern | Insole |
WO2004012548A1 (en) * | 2002-08-06 | 2004-02-12 | Schering-Plough Healthcare Products, Inc. | Insole with arch spring |
EP1813162A1 (en) * | 2004-11-18 | 2007-08-01 | Nichigen Club Co., Ltd. | Sole plate producing method |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2149313A1 (en) * | 2008-07-29 | 2010-02-03 | Cluster Aragones Del Calzado | Method for generating an elastic membrane for supporting the whole of the plantar arch integrated in the shoe and the membrane resulting from this method |
EP2386215B1 (en) * | 2010-05-12 | 2014-03-12 | Helmut Röck Gmbh | Shoe insert and shoe |
EP3153049A1 (en) | 2015-10-05 | 2017-04-12 | Christophe Otte | Plantar arch for orthopaedic sole and associated orthopaedic sole |
EP3292781A1 (en) | 2015-10-05 | 2018-03-14 | Christophe Otte | Plantar arch for orthopaedic sole and associated orthopaedic sole |
ITUA20164287A1 (en) * | 2016-06-10 | 2017-12-10 | Roberto Botter | COMPONENT FOR FOOTWEAR AND FOOTWEAR THAT INCLUDES IT |
EP3254577A1 (en) * | 2016-06-10 | 2017-12-13 | Botter, Roberto | Component for footwear and footwear comprising it |
WO2018118430A1 (en) * | 2016-12-20 | 2018-06-28 | Nike Innovate C.V. | Energy return footwear plate |
US10758001B2 (en) | 2016-12-20 | 2020-09-01 | Nike, Inc. | Energy return footwear plate |
Also Published As
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EP2111770B1 (en) | 2014-06-18 |
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