WO2020021063A1 - Structure de protection antichoc - Google Patents

Structure de protection antichoc Download PDF

Info

Publication number
WO2020021063A1
WO2020021063A1 PCT/EP2019/070175 EP2019070175W WO2020021063A1 WO 2020021063 A1 WO2020021063 A1 WO 2020021063A1 EP 2019070175 W EP2019070175 W EP 2019070175W WO 2020021063 A1 WO2020021063 A1 WO 2020021063A1
Authority
WO
WIPO (PCT)
Prior art keywords
impact protection
protection structure
side walls
side wall
recess
Prior art date
Application number
PCT/EP2019/070175
Other languages
German (de)
English (en)
Inventor
Patrick Pedevilla
Original Assignee
Patrick Pedevilla
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Patrick Pedevilla filed Critical Patrick Pedevilla
Priority to US17/263,436 priority Critical patent/US20210282490A1/en
Priority to CA3107658A priority patent/CA3107658A1/fr
Priority to EP19750081.2A priority patent/EP3826501A1/fr
Publication of WO2020021063A1 publication Critical patent/WO2020021063A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/06—Impact-absorbing shells, e.g. of crash helmets
    • A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
    • A42B3/065—Corrugated or ribbed shells
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/10—Linings
    • A42B3/12—Cushioning devices
    • A42B3/124—Cushioning devices with at least one corrugated or ribbed layer

Definitions

  • the invention relates to an impact protection structure according to the preamble of patent claim 1 and to an impact protection according to patent claim 15.
  • the technical field of the invention includes mechanical structures for reducing the risk of deformation and injury of bodies of all types, including in particular animal and human bodies, should these collide with other bodies, and in particular any type of protectors, including in particular helmets.
  • irreversible deformations such as an irreversible, fully or partially plastic deformation (e.g. crumple zone) or, can occur when certain maximum acceleration values are exceeded (which are always caused by corresponding force influences) even a break in a structure (e.g. broken bone).
  • the aim should be to extract the kinetic energy from the body in question in a comparatively long process or to “slow down” this body slowly.
  • the "slow braking" can be achieved in (in principle) unlimited space by a corresponding extension of the braking distance.
  • the only option remains to keep the curve of the negative acceleration as flat and wide as possible, with the integral of the (negative) acceleration of the body over time , ie the area under the acceleration curve (whereby the x-axis corresponds to t in sec. and the y-axis g in m / sec 2 ), the kinetic energy of the existing and degraded during the "braking process" (or just converted into thermal energy) first body.
  • all protective structures serve the purpose of extending the braking distance and thereby keeping the maximum acceleration values low.
  • the deceleration process only begins when the skull comes into contact with the obstacle. Since the “braking distance” is extremely short, namely only the few millimeters by which the skull can deform, extreme stress peaks must clearly occur.
  • the "braking phase” begins much earlier, namely when the outer shell of the helmet touches the obstacle. In the actual “braking process", the entire helmet structure is compressed up to several centimeters.
  • the structure of the helmet is usually destroyed in a targeted manner by deformation, as a result of which the kinetic energy gets in the way plastic deformation is ultimately entirely converted into thermal energy.
  • the quality of a helmet structure is particularly evident in how low - with standardized frame parameters - the peak load (EN 1077, EN 1078). The following applies: The steeper the flank when the negative acceleration is built up at the start of the "braking process", the wider and flatter the acceleration curve during the "braking process” and the steeper the flank is when the negative acceleration is reduced at the end of the "braking process” , the lower the maximum acceleration, and with it the risk that the protected body itself will undergo plastic deformation or breakage.
  • WO 2017/046757 shows, for example, an impact protection structure for a helmet, the structure consisting of a plurality of polyhedral cells arranged next to one another, which are connected by an elastic arch element.
  • protective structures already exist that consist of pure, integral polygonal wall structures. However, these are constructed from materials that are not predominantly elastic, so that plastic deformations can occur in the event of an impact. Furthermore, these structures have a high initial stiffness, so that the structure only begins to deform and thus convert kinetic energy into thermal energy when a relatively high load limit is reached. If this load limit is reached, however, the structure collapses comparatively quickly, so that the "energy dissipation effect" is suboptimal, and the load peaks remain comparatively high and thus represent a very high to lethal SHT risk for humans.
  • Conventional mechanical protective structures essentially have four crucial problems:
  • the object of the invention is therefore to provide an impact protection structure which has a high protective effect, in particular even if the structure is damaged by an impact or a fall, the impact protection structure in particular also being very comfortable to wear.
  • This object is achieved by the characterizing feature of claim 1.
  • an impact protection structure in particular for a helmet, for absorbing kinetic energy in the event of an impact, in particular a fall, comprising a multiplicity of cells arranged next to one another, each cell having a hollow interior space which is delimited by at least one side wall, at least adjacent cells have a common side wall, the interior and the side walls running from an outside of the impact protection structure to an inside of the impact protection structure opposite the outside, according to the invention it is provided that at least one side wall of a cell has at least one recess.
  • the recess In the event of an impact, the recess enables the structure to be reversibly deformed, which extends the braking distance, so that the impact can be better absorbed. Furthermore, the recess serves as a predetermined kink and therefore leads to a targeted static weakening of the structure, so that the structure is destroyed in a controlled manner. This means that even if the structure collapses, the tolerance range of the forces transmitted to the body to be protected is not exceeded. Because of the recesses, it is also possible to use particularly weather-stable materials which, without a recess, do not have sufficient damping properties and have therefore not hitherto been used for impact protection structures. In addition, the recess enables improved ventilation and a lighter weight, so that an improved wearing comfort is achieved.
  • the height of the impact protection structure i.e. the distance between the outside and inside, is determined by the height of the side walls.
  • the inside of the impact protection structure is preferably arranged facing a body to be protected, the outside on the side facing away from the body to be protected.
  • the circumference of the interior is determined by the length of the side wall or side walls delimiting it.
  • the interior can be polygonal, oval or round.
  • the shape of the interior of a cell can change from the outside to the inside of the impact protection structure.
  • the interior of a cell can therefore have, for example, a hexagonal cross section on the outside and a square cross section on the inside.
  • a first aspect of the invention relates to a mechanical structure made of materials with predominantly elastic properties, in which walls are joined together essentially in the form of polygonal and / or round and / or oval prisms, or also called extruded polygons, the walls essentially are oriented perpendicular to the surface of the body to be protected and may have recesses and / or thinnings of the wall thickness at certain points, which have the consequence that the walls of the structure begin to fold in the desired manner when a force is applied, so that the structure is neither too stiff nor too soft for the purpose of impact absorption.
  • the mechanical energy introduced into the structure is converted into thermal energy and, in this respect, the kinetic energy of the colliding body is comparatively gently reduced over a comparatively large degradation distance or a comparatively large degradation period, so that peak loads are significantly reduced , which has the consequence, in particular with helmets when subjected to force in the normal range, that medium and severe health impairments, in particular SHT, of the wearer can be avoided.
  • a “polyhedron” is a polyhedron, but it is an all-round, multi-body.
  • a “polygonal” (polygon polygon) body, on the other hand, is an extruded polygon, as is particularly the case with the hexagonal structure.
  • the second aspect of the invention relates to a particular form of that part of the structure which touches the body to be protected, the contact area of the structure on the item to be protected being increased by suitably designed contact areas on the (lower) edges of the walls closer to the body to be protected so that the specific pressure is reduced by the force transmission from the structure to the body to be protected (N / cm 2 ).
  • a variant of the invention provides that contact surfaces are attached to the lower edges of the polygonal walls, which cover the total area over which the forces are applied protective body are transferred, increase, thereby reducing the specific pressure and thus in particular, increase comfort and reduce the risk of injury from the edges.
  • the outside and the inside inside are each arranged in one area.
  • the surface can be flat or curved, in particular parabolic or hemispherical.
  • the side wall is oriented perpendicular to the surface at the point on the surface.
  • the impact protection structure on the inside has an inner contact surface formed by the cross-sectional area of the side wall delimiting the side wall on the inside. Padding can be arranged on the inner contact surface to further increase comfort.
  • the cross section of a side wall is the area between the edges of the side wall, the edges in each case delimiting the interior of two adjoining cells, in particular on the outside and on the inside of the impact protection structure.
  • the cross section of the interior of the cells tapers from the outside of the impact protection structure to the inside, it being provided in particular that the side walls from the outside to the inside , preferably with an angle of 0.5 to 5 °, in particular 1 °, widen.
  • the widened cross section of the side walls on the inside can result in an improved distribution of the weight or, if applicable, the impact energy.
  • the comfort is improved due to the larger inside or inner contact surface without increasing the weight significantly.
  • the structure becomes particularly stable because there is a gradual stiffening towards the inside.
  • the side walls have a wall thickness of 0.5 mm to 50 mm in cross section.
  • a good protective effect with high flexibility can be achieved if the side walls have a height of 0.3 cm to 50 cm.
  • the side walls preferably have a height of up to 6 cm.
  • Impact mats which are attached to the edge of a racetrack, for example, can have side walls of up to 50 cm, in particular up to 20 cm.
  • the area of the side wall is reduced in the region of the recess, it being provided in particular that the recess is arranged on the outside and / or on the inside of the impact protection structure, the height of the side wall being reduced in the region of the recess ,
  • the recess is thus arranged at an open end of a cell or at a terminating end of a side wall.
  • the stability of the structure can be controlled very precisely and the impact protection structure can be produced simply and inexpensively.
  • the recess is designed as an arc or polygon, in particular as a rectangle, since a slight deformation of the impact protection structure is made possible in the event of an impact, which increases the braking distance and improves the damping properties.
  • the collision protection structure collapses particularly easily if the impact occurs with high energy.
  • the arch shape of the recesses also enables particularly good ventilation.
  • An improved protective effect by the targeted deformation of the impact protection structure can be supported if the recess is arranged in a central region of a side wall that is spaced apart from the adjacent side walls. This improves the targeted deformation. Furthermore, the wearing comfort is increased, since a particularly effective ventilation is made possible and the impact protection structure also enables a better fit due to the easier deformability.
  • a particularly good protective effect through controlled deformation can be achieved if the recess has 0.01% to 70%, in particular 15% to 60%, preferably 30% to 50%, of the area of a side wall.
  • the protective effect can be further improved if 5% to 100%, in particular at least 20%, preferably at least 70%, of the cells have at least one side wall with at least one recess.
  • the impact energy can be distributed uniformly over the entire impact protection structure.
  • the transmission of the impact energy is improved if the surface of the side wall facing the interior is flat, or if it is composed of several flat surface areas.
  • a particularly good protective effect can be achieved if the impact protection structure has a honeycomb structure or if the interior of at least one cell, in particular a plurality of adjacent cells, has a polygonal, in particular hexagonal, cross section.
  • a uniform distribution of the weight of the structure and possibly the impact energy can take place if the interior of a number of cells on the outside and / or on the inside of the impact protection structure has a polygonal, in particular hexagonal, cross section.
  • the impact protection structure is particularly stable if the cell has six side walls, the edges of the side walls delimiting the cross-sectional area of the interior and having an edge length, opposite side walls each having the same edge length. In order to further improve the damping properties, it can be provided that four long side walls with a longer edge length and two short side walls with a shorter edge length are provided.
  • Damping properties and wearing comfort can be matched to one another particularly well by providing a recess in at least two sides of a cell that are opposite one another with respect to the interior, and in particular in all four long side walls of a cell, and / or
  • the coordination between wearing comfort and damping properties can also be improved if the inner contact surface of adjoining cells forms an arrow which is delimited by recesses, in particular in the area of the inside, and is open on both sides.
  • the inside or the inner contact surface therefore has essentially the shape of an I-beam or T-beam.
  • the load that is transferred to the body to be protected can be distributed particularly well.
  • the, in particular short, side wall laterally protruding plates can be provided.
  • the plates can, for example, be arranged laterally from the side wall at an angle from the outside to the inside, wherein the contact surface formed by the plates can lie in particular in a common area with the inside.
  • a particularly stable impact protection structure with a particularly good protective effect can be provided if the short side walls have 20% to 50% of the length of the long side walls.
  • the short side walls have a length of 0.5 cm to 10 cm and the long side walls have a length of 1 cm to 20 cm. This enables a good distribution of the weight or possibly the impact energy.
  • the impact protection structure consists of a thermoplastic elastomer, in particular of polyurethane, copolyester, polyamide, polyolefin and / or styrene block copolymer.
  • the thermoplastic polymer can be foamed, so that thicker side walls are made possible, which allow a larger inner contact surface with the same weight and thus improve both the wearing comfort and the fall absorption.
  • Another aspect of the invention is to provide impact protection that achieves optimal protection with low weight and high wearing comfort.
  • An impact protection in particular a helmet, comprising an impact protection structure according to the invention is particularly effective, fastening means being provided for fastening to a body to be protected, the inside being able to be arranged facing the body, and the recess being provided on the inside.
  • the impact protection structure can be positioned particularly well by the fastening means, so that the structure can be adapted particularly well to the requirements. This enables a particularly good protective effect to be achieved. If the recess is provided on the inside, particularly effective ventilation is achieved. Another object of the invention is to provide impact protection with a particularly good protective effect, wherein rotational movements which can occur in the event of an impact are to be intercepted.
  • an impact protection is provided with an impact protection structure, in particular according to the invention described above, an outer shell 10 being provided on an outer side of the impact protection structure facing away from the body to be protected, which is connected to the impact protection structure at such a point that the impact protection structure and the outer shell are mutually displaceable.
  • the impact protection has a good protective effect.
  • the punctiform connection enables displacement in all directions along the outside of the impact protection structure 15, so that a large proportion of the energy transmitted in the event of an impact is transferred into the rotation between the outer shell and the impact protection structure. Rotations caused by the impact are not transferred to the body to be protected, but there is only a shift within the impact protection, a shift in the x-y-z direction being possible.
  • an impact is thus absorbed laterally over the head both in the direction of a pitching movement or yes movement, in the direction of a rotation from shoulder to shoulder or no movement, and from ear to ear.
  • the energy acting on the head can be significantly reduced. Since the energy is better absorbed, the height of the impact protection structure can be reduced, so that a light and compact impact protection with high wearing comfort can be provided.
  • the displaceability between the outer shell and the impact protection structure is improved if the impact protection structure is flexible.
  • the protective effect is further increased, since an individual adaptation of the impact protection structure is possible even with a dimensionally stable outer shell. It can be provided that the impact protection structure can be compressed transversely to the intended direction of impact. This can be achieved, for example, by providing a previously described impact protection structure.
  • qc Rotational movements can be intercepted particularly effectively if the outside of the impact protection structure is arranged in a curved, in particular parabolic, surface.
  • fastening elements in particular belts, can be provided at the connection points for fastening the impact protection to a body.
  • the protective effect is particularly good if the outer shell is made of a polycarbonate or a carbon fiber material. These materials have particularly good damping properties.
  • FIG. 1 shows an exemplary impact protection structure for a helmet in a frontal view.
  • FIG. 2 shows the helmet from FIG. 1 in a top view.
  • Fig. 3 shows the helmet of Fig. 1 in rear view.
  • FIG. 4 shows the helmet from FIG. 1 in a side view.
  • FIG. 5 shows the helmet from FIG. 1 in an oblique view.
  • FIG. 6 shows the helmet from FIG. 1 in a view from below.
  • Fig. 7 shows the helmet of Fig. 1 in an oblique view from the side below.
  • FIG. 8 shows the helmet from FIG. 1 in an oblique view from the front below.
  • FIG. 9 shows the helmet from FIG. 1 in an oblique view from the rear below.
  • Fig. 1 1 a to 1 1 f different designs of the side walls according to the invention. 12a and 12b embodiments of arrangements of cells with and without recesses.
  • the impact protection structure consists of a large number of cells arranged side by side.
  • the cells have a hollow interior 1, which is delimited by side walls 2, with adjacent cells having a common side wall 2.
  • the cells are open at the top and bottom.
  • the height of the side walls 2 determines the height of the impact protection structure or the distance between an outside 3 of the impact protection structure and an inside 4 of the impact protection structure.
  • the height of the side walls can range from 0.3 to 6 cm. For impact protection structures that are not worn on the body, a height of up to 50cm is also possible.
  • the side walls 2 can have a wall thickness of 0.5 mm to 50 mm and, in the embodiment shown, have a wall thickness of 1 mm on the outside 3. Furthermore, the side walls 2 can widen from the outside 3 to the inside 4 at an angle of 0.5 ° to 5 ° and widen in the embodiment shown towards the inside 4 by 1 °.
  • the interior 1 therefore tapers from the outside 3 to the inside 4.
  • the outside 3 and the inside 4 are each arranged in one area.
  • the surface can each be flat or curved, in particular parabolic or hemispherical. In the embodiment shown, this surface is curved in each case.
  • the outside 3 is formed in a partial area from the front end to the neck end and in a further partial area above the ear recesses from a polygonal structure, which is hexagonal in the present embodiment.
  • the hexagons each have four sides of equal length and two opposite short sides. In the embodiment shown, the short sides are arranged parallel to the end of the forehead and neck.
  • This structure enables compression in the impact protection structure from the forehead to the neck area, that is to say in the direction of a yes-nick movement, in a particularly simple manner.
  • Fastening points are provided on the edge area for fastening the impact protection structure to a body.
  • the attachment points form the corner points of a regular trapezoid.
  • the attachment points can be used as connection points 6 for connection to an outer shell.
  • the outer shell at connection points 6 with is connected to the impact protection structure.
  • the outer shell can consist, for example, of polycarbonate with a thickness of 0.5 to 3.5, in particular 1.5 mm.
  • the illustrated embodiment of the impact protection structure according to the invention is made of a thermoplastic elastomer in an injection molding process.
  • the thermoplastic elastomer can be a polyurethane, copolyester, polyamide, polyolefin or styrene block copolymer, or a polyblend.
  • FIGS. 2 and 3 show that the hexagonal structure of the outside 3 is formed over the entire long side of the head, that is to say from the front end to the neck end.
  • the side walls 2 in the illustrated embodiment have a height of 31 mm.
  • the side walls 2 thus have a wall thickness of 2.2 mm on the inside 4.
  • FIGS. 4 and 5 show that a partial area with the hexagonal structure is also formed laterally, above the ear recesses.
  • the side walls 2 in the embodiment shown have a height of 22 mm.
  • the side walls 2 thus have a thickness of 1.1 mm on the inside 4.
  • the height of the side walls 2 decreases continuously between the middle and the side partial areas with a hexagonal structure, so that the outside 3 and the inside 4 are arranged on one surface.
  • FIG. 4 shows that in the embodiment shown, cells which are arranged at the edge of the impact protection structure or between the regular partial areas and also have a polygonal structure.
  • the inside 4 also has a hexagonal structure.
  • the cells likewise have four side walls 2 of equal length and two short side walls 2 opposite one another with respect to the interior 1.
  • the long side walls 2 each have a recess 5 in the inner contact surface 4.
  • the height of the side wall 2 is reduced in the region of the recess 5.
  • the recess 5 is arranged in the central region of the side walls 2, spaced from the adjacent side walls 2. In the partial areas with a hexagonal structure, the recesses 5 are arcuate.
  • the recesses 5 have a size of 10 * 12 mm or 8 in the partial area, depending on the height of the side wall 2 * 12 mm on.
  • the inner contact surface formed on the inside 4 by the cross section of the side walls 2 is formed in the partial area in the form of an arrow with two open ends or in the form of an I-beam or T-beam 7. 7 shows that this structure can also be found in the side areas, so that a large part of the inside 4 has this I-beam shape or T-beam shape 7.
  • FIG. 8 shows that the structure of the impact protection structure changes from the apex area to the neck area. In this area, the interior 1 of the cells tapers due to the curvature of the impact protection structure.
  • the inside 4 is diamond-shaped in this area without a recess.
  • Another construction of the inner side 4 is also found in the edge regions and between the partial regions with a hexagonal structure.
  • FIG. 9 shows that on the inner side 4 an inner bearing surface in the form of an arrow 7 with two open ends or is in the form of an I-beam or T-beam.
  • the inner contact surfaces are spaced apart from one another by recesses 5.
  • the recess in the partial area with a hexagonal structure occupies approximately 45% of the area of the side wall 2. This allows good ventilation, a significant weight reduction and a targeted deformation or, if necessary, a targeted breakdown of the impact protection structure.
  • the illustrated embodiment of the impact protection structure therefore offers a good protective effect with high wearing comfort.
  • the invention provides a polygonal and / or round and / or oval, prism-shaped, thermoplastic structure of the cells or of the impact protection structure, hereinafter only called “polygonal or cylindrical prism structure”. From essentially along a normal vector to the plane of the respective polygon or cylinder or extruded polygon (FIG. 10a), the walls or side walls 2 thereof with deviations of up to + / - 60 ° (angle a, FIG. 10b) essentially perpendicular to the surface of the body to be protected, ie perpendicular to the curved inner side 4.
  • the wall thickness of the extruded polygonal structure is 0.1% to 40% of the average diameter of the respective polygon, the height of the wall or side wall 2 itself can be 10% to 1000% of its wall thickness.
  • the profile of the side wall 2 or the wall of the cells can in the side elevation a rectangle (Fig. 1 1 a), a positive trapezoid (Fig. 1 1 b), one negative trapezoid (Fig. 1 1 c), a positive double trapezoid (Fig. 1 1 d), a negative double trapezoid (Fig. 1 1 e), an ellipsoid (Fig. 1 1 f) or another geometric or irregular surface.
  • the edges of the side wall 2 in the side elevation can be either straight or curved or partially straight and partially curved on the inside 4 and / or the outside 3.
  • the walls of the respective polygons or cylinders or of the cells can be either straight or curved or partially straight and partially curved in plan view elevation and have different geometric shapes (FIGS. 14a to 14d).
  • the walls or the side walls 2 of each extruded polygon or the cell can optionally be parallel to one another, so that each wall or side wall 2 can also follow its own extrusion vector (FIG. 10c).
  • the extrusion vector is understood to be the vector under which the polygon base area, that is to say the polygon, extends along the height of the cell or the side wall 2 to the top surface of the cell.
  • Edges can also coincide during the extrusion, so that the polygon or the cell on one side, that is to say the inside 4 or the outside 3, has more or fewer sides than the polygon or the cell on the inside 4 or the outside 3 or on the other side (Fig. 10d, 10e).
  • the polygon on one side can be larger or smaller than the polygon on the other side (FIG. 10f), that is to say that the polygon or cylinder or the cell experiences a negative or positive tapering of the structure from the outside inwards or from the outside 3 to the inside 4 or vice versa.
  • the polygon on one side can also have a different geometry than the polygon on the other side (FIG. 10g).
  • extrusion curves can also be used (Fig. 10h).
  • a plurality of extrusion vectors and / or extrusion curves per side wall 2 can also be used to form the cell or the polygon structure.
  • the invention further provides for targeted weakening of one or more walls of all or individual walls or side walls 2 of the polygonal or cylindrical prism structure (FIGS. 12a and 12b). In doing so
  • the recesses 5 and thinnings can be arranged either in the area of the surfaces of one wall or several walls of the polygonal or cylindrical side walls 2;
  • a recess 5 can take any shape, including in particular rectangles, trapezoids, triangles, other polyhedra, round and / or oval, convex and / or concave shapes;
  • the recesses 5 can also be used to supply fresh cooling air and / or to remove already heated cooling air;
  • the invention further includes the possibility of attaching “feet” 9 to the (inner) side or inside 4 of the impact protection structure or the cells facing the protected body, these “feet” 9 having any size and thickness and any plan ,
  • These “feet” 9 can only in the form of an inverted “T-beam", with the crossbeam down, oriented towards the body to be protected, and the wall as a longitudinal beam (Fig. 13a) along the entire inner edge of the walls, along only part of the walls or in particular only in a certain radius to the crossing points of the walls of the polygonal structure.
  • the two transverse wings of the support surface can not only be oriented at an angle of 180 ° (FIG. 13a) to one another, but may also have a larger (FIG.
  • the feet 9 or contact surfaces which are connected to the sides of the polygonal walls facing the body to be protected, are characterized in that the contact surfaces or feet are oriented essentially parallel to the surface of the body to be protected and thus the contact surface or feet of the Enlarge the structure on the body to be protected, o the contact surfaces or feet 9 can have any thickness, contour and position; o in particular the two surfaces of the contact surfaces or
  • Feet 9 do not have to be parallel; o where the contact surfaces or feet 9 can be oriented in relation to the axis of intersection with the wall either parallel (angle 180 °) or in a positive or in a negative angle or can have several angular positions over the course along the edge; o the contact surfaces or feet can be attached in particular along the entire edges of the walls or side walls 2 or only part of the walls or side walls 2 and / or can be attached only at the intersection points of the polygonal walls.
  • the concrete structure predominates in the area between the inner level (level of the
  • Walls the volume of the air space so that there is enough space for the foldings of the components of the structure.
  • the structure can therefore fold in comparatively easily to the extent of the air space.
  • the polygonal network of walls transfers folding moments to adjacent walls, too
  • the structure can also be around 20% of its initial height (and, depending on the elastic compressibility of the material used for the structure, also above it
  • the structure begins to unfold again.
  • the unfolding process is - depending on the material used for the structure and climatic conditions - slower by a factor of 2 to 50 than the folding process under force, so that it unfolds when it is unfolded
  • Double load can come.
  • the unfolding process takes only a very short time, so that in the event of a possible second impact shortly after the first impact, the fully deployed protective structure is available again.
  • Rotational accelerations have the consequence that the consequences of injuries in the event of an impact either fail to occur completely or are at least significantly less.
  • the contact surface increases the wearing comfort, in particular in the case of the “inverted Y” variant, the adaptation of the protective structure to different topographies of different head shapes is improved and the pressure of the contact surfaces of the structure on the head surface (N / cm 2 contact surface) by increasing the contact surface significantly decreased. This improves comfort and reduces the risk of injury in the event of an accident.

Abstract

L'invention concerne une structure de protection antichoc, en particulier pour un casque, pour l'absorption d'énergie cinétique lors d'un choc, en particulier d'une chute, comprenant une pluralité de cellules agencées les unes à côté des autres, chaque cellule comportant un espace intérieur (1) qui est délimité par au moins une paroi latérale (2), des cellules adjacentes les unes aux autres comportant au moins une paroi latérale (2) commune, l'espace intérieur (1) et les parois latérales (2) s'étendant d'une face extérieure (3) de la structure de protection antichoc à une face intérieure (4) opposée à la face extérieure (3) de la structure de protection antichoc, au moins une paroi latérale (2) d'une cellule comportant au moins un évidement (5).
PCT/EP2019/070175 2018-07-26 2019-07-26 Structure de protection antichoc WO2020021063A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US17/263,436 US20210282490A1 (en) 2018-07-26 2019-07-26 Impact protection structure
CA3107658A CA3107658A1 (fr) 2018-07-26 2019-07-26 Structure de protection antichoc
EP19750081.2A EP3826501A1 (fr) 2018-07-26 2019-07-26 Structure de protection antichoc

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT506542018 2018-07-26
ATA50654/2018 2018-07-26

Publications (1)

Publication Number Publication Date
WO2020021063A1 true WO2020021063A1 (fr) 2020-01-30

Family

ID=67551349

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/070175 WO2020021063A1 (fr) 2018-07-26 2019-07-26 Structure de protection antichoc

Country Status (4)

Country Link
US (1) US20210282490A1 (fr)
EP (1) EP3826501A1 (fr)
CA (1) CA3107658A1 (fr)
WO (1) WO2020021063A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4125479A4 (fr) * 2020-03-27 2024-04-24 William Baker Casque de distribution de force

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005105487A (ja) * 2003-09-30 2005-04-21 Honda Motor Co Ltd ヘルメットのベンチレーション構造
JP2005105454A (ja) * 2003-09-30 2005-04-21 Honda Motor Co Ltd ヘルメット
JP2005213678A (ja) * 2004-01-29 2005-08-11 Honda Motor Co Ltd ヘルメット用衝撃吸収ライナー及びその製造方法
JP2007254920A (ja) * 2006-03-23 2007-10-04 Honda Motor Co Ltd ヘルメット用緩衝材
EP3075274A1 (fr) * 2015-03-30 2016-10-05 Dainese S.p.A. Dispositif de protection et son procede de fabrication
WO2017046757A1 (fr) 2015-09-18 2017-03-23 Pedevilla, Patrick Structure géométrique composite pour l'absorption et la dissipation de l'énergie générée par un impact, et casque de sécurité comprenant ladite structure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3009167B1 (fr) * 2013-08-05 2016-01-01 Salomon Sas Casque

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005105487A (ja) * 2003-09-30 2005-04-21 Honda Motor Co Ltd ヘルメットのベンチレーション構造
JP2005105454A (ja) * 2003-09-30 2005-04-21 Honda Motor Co Ltd ヘルメット
JP2005213678A (ja) * 2004-01-29 2005-08-11 Honda Motor Co Ltd ヘルメット用衝撃吸収ライナー及びその製造方法
JP2007254920A (ja) * 2006-03-23 2007-10-04 Honda Motor Co Ltd ヘルメット用緩衝材
EP3075274A1 (fr) * 2015-03-30 2016-10-05 Dainese S.p.A. Dispositif de protection et son procede de fabrication
WO2017046757A1 (fr) 2015-09-18 2017-03-23 Pedevilla, Patrick Structure géométrique composite pour l'absorption et la dissipation de l'énergie générée par un impact, et casque de sécurité comprenant ladite structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4125479A4 (fr) * 2020-03-27 2024-04-24 William Baker Casque de distribution de force

Also Published As

Publication number Publication date
CA3107658A1 (fr) 2020-01-30
EP3826501A1 (fr) 2021-06-02
US20210282490A1 (en) 2021-09-16

Similar Documents

Publication Publication Date Title
DE602004008372T2 (de) Kotflügelträger eines Kraftfahrzeugs
EP1414677B1 (fr) Structure avant d'automobile comprenant un capot frontal qui se deforme en cas de collision de tete
DE69918869T2 (de) Schutzhelm
EP2651692B1 (fr) Appui-tête d'un siège de véhicule
DE202017003096U1 (de) Mehrschichtiger, schwebender, omnidirektional stoßabsorbierender Aufbau eines Sicherheitshelms
DE1256554B (de) Energieabsorbierende Daempfungsvorrichtung zum nachgiebigen Befestigen eines Sicherheitsgurtes fuer die Insassen von Fahrzeugen, insbesondere Kraftfahrzeugen
EP3000341A1 (fr) Casque de protection
EP1230496A1 (fr) Absorbeur d'energie pour absorber l'energie de choc
DE202009016759U1 (de) Energieabsorber
EP2558360A2 (fr) Aéronef à structure intégrée de déformation absorbant l'énergie et aéronef muni d'un tel fuselage
DE19947245A1 (de) Vorrichtung für die Absorption von Stossenergie
EP2277762B1 (fr) Véhicule ferroviaire doté d'un absorbeur 'énergie, notamment pour un tramway
EP3054801B1 (fr) Casque de protection
EP3826501A1 (fr) Structure de protection antichoc
DE102005042400B4 (de) Crashsicherheiterhöhende Ausrüstungs-Befestigungsvorrichtung eines Luftfahrzeugs
DE102019006117A1 (de) Fahrradhelm mit Dämpfungselement
DE102012014375B4 (de) Strukturbauteil mit Energieabbaufunktion und Kraftfahrzeug mit einem solchen Strukturbauteil
WO2002018816A1 (fr) Dispositif pour absorber l'energie de choc
EP2016846B1 (fr) Casque de protection
EP3785558B1 (fr) Casque de bicyclette pourvu d'élément d'amortissement
DE102008059913B4 (de) Stoßeinrichtung für ein Schienenfahrzeug und Schienenfahrzeug
EP3027073B1 (fr) Casquette de protection de tête
EP1457393A1 (fr) Véhicule automobile avec protection pour des piétons
DE602004011657T2 (de) Seitliche Verstärkung zur Aufname von Stossmengen für Kfz-Türen
DE102017214740A1 (de) Bewegungsenergie abbauendes Element

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19750081

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 3107658

Country of ref document: CA

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2019750081

Country of ref document: EP