EP4186381A1 - Genouillère - Google Patents

Genouillère Download PDF

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Publication number
EP4186381A1
EP4186381A1 EP22204891.0A EP22204891A EP4186381A1 EP 4186381 A1 EP4186381 A1 EP 4186381A1 EP 22204891 A EP22204891 A EP 22204891A EP 4186381 A1 EP4186381 A1 EP 4186381A1
Authority
EP
European Patent Office
Prior art keywords
knee
knee pad
pad
longitudinal side
side sections
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.)
Pending
Application number
EP22204891.0A
Other languages
German (de)
English (en)
Inventor
Phillipp Stienen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Engelbert Strauss & Co Kg GmbH
Original Assignee
Engelbert Strauss & Co Kg GmbH
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 Engelbert Strauss & Co Kg GmbH filed Critical Engelbert Strauss & Co Kg GmbH
Publication of EP4186381A1 publication Critical patent/EP4186381A1/fr
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/06—Knee or foot
    • A41D13/065—Knee protectors

Definitions

  • the invention relates to a knee pad manufactured using the additive process.
  • the invention also relates to a method for producing a knee pad.
  • a cup-shaped knee pad after the DE 10 2016 120 379 A1 has a base body in which a stiffening can be introduced.
  • the knee pad With a knee pad after the DE 20 2008 013 477 U1 part of the surface has a puncture-resistant coating.
  • the knee pad itself can be attached using a Velcro strap.
  • a plate is provided which can be introduced into a depression in a bottom part of the knee pad.
  • a knee or elbow pad after the EP 1 177 732 A2 has a protective shell that has lateral contact areas in the form of padding elements for fixing the knee or elbow.
  • the U.S. 2020/0113267 A1 refers to a helmet whose inner shell is manufactured using an additive process.
  • a knee pad is also referred to as clothing.
  • the known knee pads are always designed in multiple parts, which has a negative impact on the manufacturing costs. There is also the risk that the individual parts will not fit to the required extent, so that optimal use is not possible.
  • the attachment of fasteners requires separate assembly steps.
  • the knee pad can be placed in the knee-side pockets of trousers, so that special clothing is required to be able to use the knee pad.
  • the object of the present invention is to provide a knee pad and a method for producing such a pad that avoids the disadvantages of the prior art and in particular ensures that the desired comfort that is to be achieved with the knee pad is provided.
  • the invention provides essentially that the knee pad is a monolithic shell-shaped body with a base portion for Supporting a knee as well as longitudinal side and transverse side sections delimiting the base section.
  • the knee pad consists of a curable plastic or reaction resin, in particular a photopolymerizable plastic such as elastomeric polyurethane or epoxy resin. Sustainable raw materials can also be considered.
  • knee protector also called knee pad according to the standard
  • knee pad which is designed as a monolithic body, which is designed according to the requirements, in particular is puncture-proof at least in certain areas and can have integral fastening means, for example.
  • the additive manufacturing process is used, with the CLIP (Continuous Liquid Interface Production) process in particular being used.
  • This is a continuous process in which a container is filled with photosensitive material such as synthetic resin.
  • the bottom of the container is at least partially transparent to ultraviolet (UV) light.
  • a beam of UV light is directed through the floor onto the photopolymerizable fluid and is precisely focused on the area where curing is to occur.
  • the object to be printed is pulled out of the fluid from a platform so slowly that fluid can flow.
  • An oxygen-permeable membrane is placed under the fluid and creates a so-called dead zone (a transient phase that remains liquid) that prevents the fluid from settling to the bottom and polymerizing.
  • dead zone a transient phase that remains liquid
  • the invention is characterized in that the knee pad has zones of different physical properties, such as rigidity, damping, shock absorption and/or elasticity, which can be formed by cell and/or lattice structures in the body.
  • the elastic properties of the knee pad can be changed in a simple manner in order to achieve areas such as high rigidity or low damping or elasticity and areas of low rigidity or high damping or high elasticity.
  • the cell and/or lattice structure of the hardened material must be changed accordingly, in particular the distance between the cell walls or the webs of the lattice and/or the thickness of the cell walls or the webs.
  • the knee pad i.e. the knee pad in the additive manufacturing process, has integrally formed attachment means for attaching the knee pad in particular to a piece of clothing.
  • attachment means for attaching the knee pad in particular to a piece of clothing.
  • the fastening means has a flat section extending from the body, which transitions into a pin-shaped, rod-shaped, or sleeve-shaped section that extends along the knee pad.
  • receptacles of tubular geometry such as elongated holes, can be formed, into which pin or rod-shaped sections of fastening means are inserted, which e.g. emanate from an item of clothing in order to attach the knee pad.
  • an outside of the knee pad is formed at least in regions by an outer layer forming the puncture protection.
  • the body should have a honeycomb structure with channel-shaped openings, at least in regions, which run in particular in or approximately in a plane that is spanned by the knee pad, in particular its base section.
  • the lattice structure has such a geometry that the desired properties of the knee protector, such as elasticity, strength, etc., are achieved.
  • the side sections of the body are preferably formed by side legs, which preferably each consist of two sections or have sections that merge into one another via a depression.
  • the side limb should be surrounded at the edge by a layer forming the puncture protection.
  • the edge should include at least the outside of the side leg or essentially only the outside, ie the area that runs away from the knee.
  • the invention provides that the longitudinal side sections have greater elastic deformability, at least in regions, than the base section and/or at least regions of the transverse side sections.
  • the longitudinal side sections should have a rigidity such that the knee is guided to a sufficient extent, ie it can be positioned in the knee pad with sufficient stability.
  • the fastening means themselves should emanate from areas of the longitudinal side sections of the body running on the transverse side section side or adjoining the transverse sides.
  • a knee pad can also be attached to a piece of clothing by e.g. sewing or magnets or Velcro strips or snap fasteners.
  • a knee pad can also be inserted into a receptacle such as a pocket of a garment.
  • the knee pad can also be used as a base, so it does not have to be connected to a piece of clothing.
  • a direct attachment to a leg e.g. when wearing shorts, is also possible.
  • the knee protector has zones of differing physical properties such as rigidity, damping, elasticity, which are formed in particular by cell and/or lattice structures in the body.
  • a knee protector is also characterized in that the knee protector is a monolithic shell-shaped body produced in an additive process with a base section for supporting a knee and longitudinal side and transverse side sections delimiting the base section, that the knee protector has zones of differing physical properties, such as cushioning, Elasticity, rigidity, and that the knee pad has at least one layer or region forming a puncture protection.
  • Characteristic of the invention is also a knee pad, which is characterized in that the knee pad is a monolithic shell-shaped body produced in an additive process with a base section for supporting a knee and longitudinal side and transverse side sections delimiting the base section, that the knee pad has at least one puncture protection forming Layer or having such an area, and that the longitudinal side sections of the body are formed by side legs, each consisting of two sections or having those that merge into one another via a depression.
  • a method for producing a knee protector in an additive process in particular a knee protector with one or more of the features explained above, is characterized in that the knee protector is produced as a monolithic shell-shaped body.
  • knee pads are produced by means of stereolithography of a polymerizable material, such as a curable plastic or reaction resin, in particular using the CLIP method.
  • a curable plastic or a synthetic resin is used that cures through photopolymerization.
  • elastomeric polyurethane or epoxy resin is used as the material, which can contain additives, such as photoinitiators or expandable microspheres, to the extent required, such as those used in particular in continuous liquid interface production (CLIP).
  • the knee protector 10, 100, 200, 300 is a monolithic body in which fastening means and/or fastening means receptacles can also be produced integrally in the additive process, a preferred solution, but not mandatory.
  • Possible fasteners are in the 1 identified by the reference numerals 12, 14, 16, each of which consists of a flag-shaped, i.e. flat section 20, 22, 24 extending from the body 20 of the knee pad 10 and a distally extending rod- or pin-shaped section 26, 28, 30, the longitudinal extent of which may extend along the longitudinal axis of the knee pad 10.
  • the rod or pin-shaped sections 26, 28, 30 can then in sleeve-shaped Shots 32, 34, 36 of fastening means 38, 40, 41 are introduced, ie pushed in, starting from trousers as an item of clothing, for example. This ensures that the knee pad 10 is securely fastened.
  • the pin or rod-shaped elements can be introduced, which emanate from, for example, a piece of clothing or a strip-shaped element, in particular from the end regions, which itself can be variable in length.
  • the body 20 of the knee pad 10 or knee pad is designed in the shape of a shell and is composed of a base section 42 and longitudinal side sections 44, 46 extending from this and transverse side sections 48, 50 running transversely thereto, which extend from the edges, namely from the front edge sections, of the base section go out.
  • the outer side 52 of the shell-shaped body 20 has an arcuate, ie convex, geometry.
  • the inside 54 also has an arcuate, namely concave shape, as is also self-explanatory from the Figures 3 and 4 results.
  • a corresponding shape results both in longitudinal section and in cross section according to the representations in FIGS Figures 3 and 4 .
  • the exterior 52 of the body 20 is formed by a puncture resistant layer 56 which extends over both the base portion 42 and the transverse side portions 48,50.
  • the longitudinal side sections 44, 46 do not have a corresponding puncture-proof layer in accordance with EN14404 on their outer sides.
  • the puncture resistant layer 56 extends along the undersides of the longitudinal side sections 44,46.
  • the outer sides of the longitudinal side sections should also have a puncture-resistant outer layer.
  • the longitudinal side sections 44, 46 can be open-pored on their outer sides 62, 64, ie the lattice and/or honeycomb structure of the body 20, which is formed by the additive manufacturing process, is visible but can be covered in some areas, for example with foils 66, 68, 70, 72, as in principle from the 2 becomes evident.
  • outer sides 62, 64 are closed surfaces that are produced using the additive method.
  • the outer sides 62, 64 should also be covered with a puncture-resistant layer, in particular a closed one.
  • the longitudinal side sections 44, 46 each consist of two sections 74, 76 which merge into one another via a depression 78, ie a constriction. This allows the body 20 to bend along the line defined by the depressions 78, 80. This is supported by a corresponding weakening of the material of the base section 42, for example by a groove, as will be explained below.
  • This change in the physical properties ie in particular the elasticity, damping or rigidity, is achieved by the structure of the body 20 produced in the additive process, which is in particular a honeycomb or lattice structure 82, as shown in the section of FIG 6 refer to.
  • the rigidity can be changed by changing the distances or thicknesses of webs or walls 84, 86 or 88, 90, which preferably extend in lines running parallel to one another.
  • the body 20 can also consist of layers that have different geometries from one another.
  • a layer can have a warm structure.
  • the subsequent layer which is in particular connected to the preceding layer by struts, can have a quadrilateral shape in section, in a plane perpendicular to the layer, which is characterized by a honeycomb structure.
  • At least one physical property should vary, whether it be elasticity, damping or rigidity, with elasticity alone being able to be varied in some areas, damping in other areas and rigidity again in other areas.
  • the cavities delimited by the walls 84 , 86 , 88 , 90 of the honeycomb are designed like channels and extend in particular along a plane which is defined by the length of the knee pad 10 .
  • Warm structures ie the plane spanned by the honeycombs, can also run parallel to the areas in which the corresponding honeycomb geometries are present.
  • at least one layer of the base section 62 can have a honeycomb structure, the openings of which run transversely to the plane spanned by the base section 42, in particular largely perpendicularly thereto.
  • recesses 17, 19 such as elongated holes can be provided in the longitudinal side sections 44, 46, starting from their end faces, i.e. in the area of the transverse side sections 48, 50, in the longitudinal direction of the longitudinal side sections 44, 46, into which, for example, rod or pin-shaped fastening means designed to complement the recesses can engage, which emanate, for example, from an item of clothing in order to fasten the knee pad 10.
  • knee pads 100, 200, 300 are shown, which correspond to the teaching according to the invention and have been produced in an additive process.
  • the knee pad 100 has a base section 142 which is softer, ie more shock-absorbing, than the longitudinal side sections or regions 144, 146.
  • the transverse side sections or regions 148, 150 are also harder than the base section 142, preferably with the same hardness as that of the longitudinal side sections 144, 146 being selected.
  • the same reference numbers are used, i.e. the reference numbers 58, 60 for the lower sections of the puncture-resistant layer 56 Obvious areas from the integrally formed fasteners, namely in which fasteners 38, 40, 42 are introduced.
  • the fasteners, or those in the form shown, are not mandatory
  • the 7 the depressions or constrictions 48, 80 between the sections of the longitudinal side sections 144, 146 can also be removed.
  • a longitudinal groove 154 is also provided in the direction of the longitudinal axis, in order to also facilitate bending about the longitudinal axis of the knee pad 10, in order thus to enable optimal adaptation to the knee area of a person.
  • the embodiment of 8 differs from that of 7 in that the high cushioning base portion 42 includes a low cushioning portion 260 which is immediately adjacent to the patella when the knee pad 20 is in place.
  • the structure of the longitudinal side sections 244, 246 produced in the additive process corresponds to that of FIG 7 , ie, compared to the base portion 242, outside of the area 260, there is a high rigidity.
  • the undersides of the longitudinal side sections 244, 246 have the sections 58, 60 of the puncture-resistant layer 56, but can also or alternatively be covered on the outside by a puncture-resistant layer.
  • the honeycomb or lattice structure or other structure produced in the additive process provides softer, ie greater, shock-absorbing properties than in the support area towards the thigh.
  • the knee pad 300 according to 9 differs from those of 7 and 8th in that the base section 342 is essentially characterized by a structure which has harder damping properties in comparison to regions of the transverse side sections 348, 350. Otherwise, the same geometry is given, ie in the area of the constrictions or depressions 78, 80, the side sections 344, 346, as in the case of the knee pad 220, a groove or indentation 152 in the base section 342, and in the direction of the longitudinal axis, specifically in the central area of the base section 342, a longitudinal groove 154 corresponding to the Figure 7 and 8th , so that the same reference numbers are used.
  • the outer, puncture-proof layer 56 has a hard damping properties and an inner layer 59, which has softer damping properties than the layer 56, ie a layer of low rigidity. It is not necessary for the body 20 to have a corresponding layer sequence overall, as has been explained above. Rather, this can only be provided in certain areas. It is also not absolutely necessary for the puncture-proof layer 56 to run over the entire surface. As an alternative or in addition, puncture-proof areas can also be provided.
  • the puncture-resistant layer 56 runs between the layer 59, which has a low stiffness, and the layer 57, which is harder or exhibits less shock absorption.
  • the puncture-resistant layer 56 runs on the inside, which is followed by layer 59, which has a high shock-absorbing effect and then layer 57, which has a lower shock-absorbing effect than layer 59, i.e. it is harder.
  • the sections of the knee protector can have more than two layers, which in particular have different geometric structures. It is provided in particular that the longitudinal side sections have at least four layers, the layers being able to have a honeycomb structure or a geometry which, seen from above, consists of rectangles which have openings delimited by webs in their corners. The intersections of the boundaries, which are to be referred to as nodes, can have rectangular elements of the structure with openings.
  • the invention relates to a knee protector 10, 100, 200, 300 produced in an additive process, comprising a monolithic shell-shaped body with a base section 42, 142, 242, 342 for supporting a knee and longitudinal side and transverse side sections 44, 46 delimiting the base section , 48, 50, 144, 146, 148, 150, 244, 246, 248, 250, 344, 346, 348, 350.
  • Support is to be understood in the broadest sense and includes stabilization, protection, protection and pressure distribution.
  • the invention is characterized in that the knee pad 10, 100, 200, 300 consists of a curable plastic or reaction resin, in particular a photopolymerizable plastic such as elastomeric polyurethane or epoxy resin, or a sustainable raw material.
  • a curable plastic or reaction resin in particular a photopolymerizable plastic such as elastomeric polyurethane or epoxy resin, or a sustainable raw material.
  • knee pad 10, 100, 200, 300 has zones of differing physical properties, such as cushioning, elasticity, rigidity, which are formed in particular by cell and/or lattice structures in the body.
  • the cells can have a honeycomb structure and/or the grids can be formed by intersecting rectangles, it being possible for limited openings, such as through openings, to be provided at the intersections of webs.
  • Fastening means also include receptacles that engage in means emanating from, for example, an item of clothing.
  • the fasteners can be male or female fasteners.
  • the invention provides that the knee pad 10, 100, 200, 300 has at least one layer 56 forming a puncture protection or such an area.
  • an outside of the knee pad 10, 100, 200, 300 is formed at least in regions by an outer layer 56 forming the puncture protection.
  • the body has, at least in regions, a honeycomb structure with channel-shaped openings, which run in particular in or approximately in a plane that is spanned by the knee pad 10, 100, 200, 300 or its base section 42, 142, 242, 342 , and/or has a lattice structure of desired geometry.
  • the invention is also characterized in that the longitudinal side sections 44, 46, 144, 146, 244, 246, 344, 346 of the body are formed by side legs, each of which consists of two sections 74, 76 or have such that have a depression 78 merge into each other.
  • longitudinal side sections 44, 46, 144, 146, 244, 246, 344, 346 have a layer forming the puncture protection at least on the edge side.
  • outer sides 62, 64 of the longitudinal side sections 44, 46, 144, 146, 244, 246, 344, 346 are in particular completely covered by a puncture-proof layer.
  • the invention provides that the longitudinal side sections 44, 46, 144, 146, 244, 246, 344, 346 have greater elastic deformability, at least in regions, than the base section 42, 142, 242, 342 and/or at least regions of the transverse side sections 48, 50 , 148, 150, 248, 250, 348, 350.
  • the integral fastening means 12, 14, 16 emanate from areas of the longitudinal side sections 44, 46, 144, 146, 244, 246, 344, 346 of the body running on the transverse side section side or in particular from the end areas of the longitudinal side sections 44, 46 and in the longitudinal direction these running oblong holes as female fasteners for receiving pin or rod-shaped elements, which in turn emanate from fasteners connected to an item of clothing, for example.
  • fastening means 12, 14, 16 has a flat section 20, 22, 24 which extends from the body and which merges into a pin or rod-shaped section 26, 28, 30 which extends along the knee pad.
  • the invention is also characterized in that the base section 42, 142, 242, 342 has depressions 152, 154, such as grooves, running along its longitudinal and/or transverse axis on the inside.
  • the subject matter of the invention is also a method for producing a knee pad 10, 100, 200, 300 in an additive method, which is characterized in that the knee pad 10, 100, 200, 300 is produced as a monolithic, shell-shaped body.
  • the knee pad 10, 100, 200, 300 is produced by means of stereolithography of a polymerizable material, such as a curable plastic or reaction resin, in particular in the CLIP process, or from a raw material that is close by.
  • a polymerizable material such as a curable plastic or reaction resin

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
EP22204891.0A 2021-11-22 2022-11-01 Genouillère Pending EP4186381A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021130480.6A DE102021130480A1 (de) 2021-11-22 2021-11-22 Knieschoner

Publications (1)

Publication Number Publication Date
EP4186381A1 true EP4186381A1 (fr) 2023-05-31

Family

ID=84047771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22204891.0A Pending EP4186381A1 (fr) 2021-11-22 2022-11-01 Genouillère

Country Status (2)

Country Link
EP (1) EP4186381A1 (fr)
DE (1) DE102021130480A1 (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1177732A2 (fr) 2000-08-04 2002-02-06 Ahlbäumer, Georg, Dr. Protection pour le genou ou le coude, en particulier pour la pratique sportive comme le patin en ligne, mais aussi pour utilisation en protection professionnelle
DE202008013477U1 (de) 2008-10-14 2008-12-24 Kwm Entwicklungs-, Vertriebs- Und Service Gmbh Knieschoner zum Festlegen am Knie eines Menschen
DE202008013801U1 (de) 2008-11-27 2009-02-12 Kaul, Christian Knieschoner mit Platte
WO2009039410A2 (fr) 2007-09-20 2009-03-26 Williams James D Genouillère protectrice amovible
US20140259325A1 (en) * 2013-03-14 2014-09-18 Nike, Inc. Protective Apparatus With A Varied Thickness Lattice Support Structure
WO2015103634A2 (fr) * 2014-01-06 2015-07-09 Lisa Ferrara Dispositifs composites et procédés pour fournir une protection contre une lésion tissulaire traumatique
EP2956822B1 (fr) 2013-02-12 2016-06-29 CARBON3D, Inc. Procédé et appareil pour fabrication tridimensionnelle avec support de traversée
DE102016120379A1 (de) 2016-10-25 2018-04-26 Hermann Wolfgang Schwan Knieschützer mit erhöhter Stichfestigkeit
US20180126630A1 (en) 2016-11-04 2018-05-10 Carbon, Inc. Continuous liquid interface production with upconversion photopolymerization
DE102018205457A1 (de) 2018-04-11 2019-10-17 Adidas Ag Schuh oder Bekleidung mit additiv hergestelltem Element
US20200113267A1 (en) 2018-10-12 2020-04-16 Carbon, Inc. Moisture controlling helmet liner and related articles produced by additive manufacturing

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1177732A2 (fr) 2000-08-04 2002-02-06 Ahlbäumer, Georg, Dr. Protection pour le genou ou le coude, en particulier pour la pratique sportive comme le patin en ligne, mais aussi pour utilisation en protection professionnelle
WO2009039410A2 (fr) 2007-09-20 2009-03-26 Williams James D Genouillère protectrice amovible
DE202008013477U1 (de) 2008-10-14 2008-12-24 Kwm Entwicklungs-, Vertriebs- Und Service Gmbh Knieschoner zum Festlegen am Knie eines Menschen
DE202008013801U1 (de) 2008-11-27 2009-02-12 Kaul, Christian Knieschoner mit Platte
EP2956822B1 (fr) 2013-02-12 2016-06-29 CARBON3D, Inc. Procédé et appareil pour fabrication tridimensionnelle avec support de traversée
US20140259325A1 (en) * 2013-03-14 2014-09-18 Nike, Inc. Protective Apparatus With A Varied Thickness Lattice Support Structure
WO2015103634A2 (fr) * 2014-01-06 2015-07-09 Lisa Ferrara Dispositifs composites et procédés pour fournir une protection contre une lésion tissulaire traumatique
DE102016120379A1 (de) 2016-10-25 2018-04-26 Hermann Wolfgang Schwan Knieschützer mit erhöhter Stichfestigkeit
US20180126630A1 (en) 2016-11-04 2018-05-10 Carbon, Inc. Continuous liquid interface production with upconversion photopolymerization
DE102018205457A1 (de) 2018-04-11 2019-10-17 Adidas Ag Schuh oder Bekleidung mit additiv hergestelltem Element
US20200113267A1 (en) 2018-10-12 2020-04-16 Carbon, Inc. Moisture controlling helmet liner and related articles produced by additive manufacturing

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