EP1885212B1 - Buffer for trekking or nordic-walking poles - Google Patents

Buffer for trekking or nordic-walking poles Download PDF

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Publication number
EP1885212B1
EP1885212B1 EP06721967A EP06721967A EP1885212B1 EP 1885212 B1 EP1885212 B1 EP 1885212B1 EP 06721967 A EP06721967 A EP 06721967A EP 06721967 A EP06721967 A EP 06721967A EP 1885212 B1 EP1885212 B1 EP 1885212B1
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EP
European Patent Office
Prior art keywords
buffer
rolling surface
pole
anchoring
retaining element
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.)
Active
Application number
EP06721967A
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German (de)
French (fr)
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EP1885212A1 (en
Inventor
Eberhard Heim
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.)
Lekisport AG
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Lekisport AG
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Filing date
Publication date
Application filed by Lekisport AG filed Critical Lekisport AG
Priority to EP11160947.5A priority Critical patent/EP2338375B1/en
Publication of EP1885212A1 publication Critical patent/EP1885212A1/en
Application granted granted Critical
Publication of EP1885212B1 publication Critical patent/EP1885212B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00—Details
    • A45B9/04—Ferrules or tips
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B2200/00—Details not otherwise provided for in A45B
    • A45B2200/05—Walking sticks
    • A45B2200/055—Walking sticks for Nordic walking
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H3/02—Crutches
    • A61H3/0288—Ferrules or tips therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49947—Assembling or joining by applying separate fastener

Definitions

  • the present invention relates to a buffer for a stick, in particular for a trekking, walking or Nordic walking pole, wherein the buffer at its upper end means for attachment to a pole tube, in particular in the form of a recess, and at its lower end a Rolling surface, wherein the rolling surface is formed in a transverse direction with respect to the rolling substantially flat or only slightly convex, but in a longitudinal direction perpendicular thereto is convex so convex that during the movement of the user of the stick a rolling surface during the repulsion movement with the stick on a base. Furthermore, the present invention relates to a trekking, walking or Nordic Walking stick with such a buffer and method for producing such buffers or damping elements.
  • Trekking and climbing is also increasingly practiced for health reasons with the aid of at least one, preferably even two sticks.
  • the so-called Nordic Walking is based even on the fact that two sticks are used and thus a dynamic and joints gentle movement is possible.
  • a stick known, especially trekking or Nordic walking pole with a pole tube, the upper end provided with a handle and the lower end with a buffer / friction element is detachably equipped, the Buffer / friction element is provided between its the pole pipe facing support surface and his stock pipe receiving a damping area.
  • a single carbide tip for example, be held in the form of a spike, for example, vulcanized to achieve a sufficient connection between the buffer / friction and the pad even with icy pad.
  • the invention is therefore an object of the invention to provide an improved, suitable for a variety of substrates suitable buffers for a trekking, walking or Nordic walking pole.
  • it is about to improve a buffer for a stick, especially for a trekking, walking or Nordic walking pole, the buffer at its upper end means for attachment to a pole, z. B.
  • a rolling surface in the form of a recess, and at its lower end a rolling surface, wherein the rolling surface in a transverse direction with respect to the rolling substantially flat or only slightly convex curved (possibly with trough-shaped indentations or depressions) is formed, but in a longitudinal direction perpendicular
  • curved convex so that it forms a rolling surface during the repulsion movement with the stick on a base during the movement of the user of the stick.
  • the buffer consists of a rubber-elastic material at least in the region of the rolling surface, and in that at least one elastically mounted, hard, substantially inelastic holding element is arranged in the rubber-elastic material.
  • the essence of the invention is therefore to take over, so to speak, the effect of a tip by at least one holding element which is elastically mounted in the rubber-elastic material.
  • the hard, inelastic holding element for example made of metal and / or ceramic, can engage in soft substrates and is therefore suitable for such soft substrates, similar to a conventional stick tip.
  • the holding element has a hardness which is preferably greater than 3, particularly preferably greater than 4, 5 or even greater than 6 or 7, on the Mohs scale.
  • the hardness stated here refers to the region of the holding element which coincides with enters or enters the subsoil. Those areas of the holding element, which do not come into contact with the substrate or penetrate into it, can easily have a lower hardness, they can even be made of soft and partially elastic material, as long as a sufficient support in the material of the buffer is ensured.
  • the at least one elastically mounted retaining element projects at least partially beyond the rolling surface, typically in the range of one-half to two or three millimeters or more.
  • the anchoring depth of the retaining element in the buffer is greater than the height which protrudes beyond the rolling surface.
  • the rolling surface is generally asymmetric in shape by being pulled up at the front end (i.e., in the direction of travel) and with the rear end substantially forming a point. This results in an ideal rolling behavior at z. As a rule, rather long sticks during Nordic walking.
  • At least 2, preferably at least 4, at least 6 or at least 8 holding elements are arranged on respectively in or on the rolling surface.
  • the holding elements are preferably arranged spaced apart in the longitudinal direction, that is to say in the running direction, wherein at least 2 or at least 3 or at least 4 holding elements can be arranged in at least one row or in particular offset laterally in the longitudinal direction.
  • This particular arrangement of the holding elements proves to be extremely suitable in particular in connection with the specifically configured, upwardly convex rolling surface. It is thus ensured that during the entire movement always a holding element contact with the ground.
  • a preferred embodiment is characterized in that at least 4, preferably 6 or 8 holding elements are arranged, and that the holding elements are arranged in at least 2, offset in the transverse direction rows of corresponding 2, 3 or 4 holding elements.
  • the fact that different rows are arranged laterally offset results in addition the advantage that with oblique placement or with irregular background, holding elements always make contact with the ground.
  • the rolling surface also has a profile.
  • the at least one holding element is preferably arranged on at least one lug surface of the profile.
  • the profile may have at least one, preferably central, longitudinal groove and at least 2, 3 or 4 lateral symmetrically branching transverse grooves, and two longitudinally extending rows of, for example, four holding elements each may be arranged on the lug surfaces of the rolling surface formed by the grooves be.
  • the buffer consists wholly and in one piece of a rubber-elastic material, particularly preferably of an optionally vulcanized natural and / or synthetic rubber, particularly preferably having a hardness of 20 to 80 Shore A, preferably 50-70 Shore A, e.g. 55-64 Shore A.
  • a rubber-elastic material particularly preferably of an optionally vulcanized natural and / or synthetic rubber, particularly preferably having a hardness of 20 to 80 Shore A, preferably 50-70 Shore A, e.g. 55-64 Shore A.
  • typical tire materials can be used.
  • the holding element is designed in the form of a pin, which is embedded with its first end in the rubber-elastic material, and which projects with its second end over the surface of the rolling surface.
  • the area projecting at the second end to the rolling surface by a circumferential flange or collar is limited or supported.
  • the second end is at a height in the Range of 0.05 - 5 mm, particularly preferably in the range of 1-2 mm, over the surface of the rolling surface before.
  • the collar preferably has a circular ring width of 0.5-1.5 mm.
  • the holding element has at its second end a particularly hard, in particular hardened tip.
  • the retaining element comprises a one-piece anchoring element which is embedded in the rubber-elastic material except for a flange or collar (the flange or collar can either be integrally formed with the anchoring element or as an individual element), wherein the anchoring element on its side facing the rolling surface on has a recess in which a tip element, for example in the form of a metal pin, embedded and secured therein.
  • the anchoring element may for example consist of plastic, iron, steel, in particular stainless steel, brass, aluminum or other non-ferrous metals.
  • the tip element may for example consist of ceramic, hardened metal, in particular hardened steel, sintered hard metals or other wear-resistant materials.
  • the tip member may also be coated with a wear minimizing surface by appropriate methods (e.g., TiN, TiCN, etc.).
  • the anchoring element preferably has in the region embedded in the rubber-elastic material anchoring means, particularly preferably in the form of anchoring lamellae.
  • anchoring means particularly preferably in the form of anchoring lamellae.
  • a plurality of circumferential anchoring slats are arranged, which are conical in the direction away from the rolling surface, and which are stepped in the direction of the rolling surface facing direction.
  • the anchoring element or the entire holding element can be particularly easily inserted or einsch manen in the buffer in the method described below.
  • a particularly simple construction is possible if a single, elastically mounted, hard, inelastic holding element is arranged in the rubber-elastic material, this preferably protruding at least partially downwards over the rolling surface.
  • the retaining element has an anchoring element, which in rubber-elastic material is preferably embedded to a flange, wherein the holding element in the embedded rubber-elastic material area means for anchoring, particularly preferably in the form of anchoring lamellae.
  • the anchoring element may have on its side facing the rolling surface on a recess in which a tip member is embedded and secured therein, as explained above.
  • Such a single holding element is particularly preferably arranged centrally in the transverse direction.
  • the buffer may additionally be provided with a specific flexibility, this in particular if, as explained above, it consists entirely and in one piece of a rubber-elastic material. This specific flexibilization is possible by providing recesses in the regions to be softer. A particularly preferred such region is the leading edge of the buffer.
  • the buffer has at its leading edge a chord formed by two recesses provided laterally, this chord preferably being over at least 10%, particularly preferably in the range of 20-40% of the total length the leading edge extends. Similar measures can be taken at the trailing edge.
  • the buffer In order to increase the grip of the buffer, especially in soft material, in which the buffer penetrates substantially, it is also possible to provide a profile on the side and not only down on the rolling surface.
  • at least two, in particular preferably at least three such lateral projections are preferably provided on each side of the buffer.
  • the present invention relates to a trekking or Nordic Walking pole with a buffer, as described above.
  • the present invention relates to a method for producing a buffer as described above.
  • the method is in particular characterized in that the at least one holding element is injected at the suitable locations, for example on the lugs of a profile, substantially perpendicular to the rolling surface in the rolling surface, where appropriate previously drilled corresponding blind holes, melted out, burned out or already in the manufacturing process of Blank is provided during the primary molding process.
  • the at least one retaining element the appropriate locations substantially perpendicular to the rolling surface in the rolling surface in accordance with drilled or provided during the manufacturing process of the blank blind holes inserted and glued therein.
  • FIG. 1 shows a Nordic walking or trekking pole 1 in the lower, that is usually in use facing the ground 3 area. At the not As shown, such a stick usually has a handle with a hand strap on which the stick is gripped.
  • the stick has a pole tube 1a, which can be, for example, an aluminum tube and / or a fiber-reinforced plastic tube.
  • a buffer 2 is attached to this pole tube 1a.
  • the buffer 2 is at its upper end 4 with a blind hole or a recess 10 (see FIG. 2 ), in which the pole tube 1a inserted respectively. possibly even additionally glued in this.
  • the pole tube 1a can either have a not further processed or fitted with additional elements pipe end (in this case, for example, a plastic sleeve can be provided in the recess, which is attached via a fabric connection or a traction on the floor and / or the buffer), but it is also possible, on the pole tube 1a down a tip, for example, from the skiing or trekking known, provide, that is, in this case, the buffer 2 is pushed onto such a tip.
  • the buffer 2 has at its lower end a rolling surface 5.
  • This rolling surface 5 has, via a front end 6 and a rear end 7, wherein the front and rear refers to the direction.
  • the illustration is in FIG. 1 to understand that a runner runs in the plane of the paper from right to left, and accordingly when putting on a substantially vertical stick first the rolling surface at the rear end 7 touches, and the progress of the runner by the increasing leftward tilt of the stick on the rolling surface 5 rolls until the end just before the lifting of the stick, the rolling surface rests only in the region of the front end 6 on the floor 3.
  • the shape is optimized insofar as the movement, as viewed from the side of a somewhat triangular structure is given, the long, rearwardly facing leg is formed substantially along the axis of the stick, the lower tip of this long leg through the rear end 7 is formed, and whose lower short leg convex to the ground as a rolling surface is formed so that the forward tip is formed by the front end 6 of the rolling surface 5.
  • the buffer 2 is made in its mass of a rubber-elastic plastic material, it is, for example, in the field of tire manufacturing usual materials, that is, for example in question come vulcanized synthetic rubbers. Such a buffer 2 can be produced in a primary molding process.
  • the buffer of different materials, such as in the upper end facing region of a first, possibly even inelastic plastic material, and in the rolling surface, for example, with a height of 2 to 10 mm of a rubber-elastic plastic material .
  • a buffer may be prepared either by a coextrusion process or by a two-component injection process, or by, for example, bonding the different materials. It is essential in any case that in the area of the rolling surface of the buffer consists of a rubber-elastic material, otherwise the inventive rubber-elastic mounting of the holding elements 9 is not possible.
  • the buffer 2 in the rolling surface 5 preferably has a profile 8.
  • FIG. 3 shows a view along the direction R, as shown in FIG FIG. 2 is represented.
  • different grooves 11, 12 are provided in the rubber-elastic material. Between these grooves, with a depth, for example, in the range of 1-4 mm, form the cleats of the profile.
  • the studs each have a surface 13 which is at least partially planar or respectively convex in the longitudinal direction 21. On these surfaces 13 respectively in the underlying studs, the support elements 9 are embedded.
  • FIG. 4a shows a view analogous to the view according to FIG. 1 , wherein additionally the longitudinal direction 21 is indicated, as well as the sectional plane AA, which in FIG. 4b ) is shown. It is apparent how the retaining elements 9 are recessed in recesses holes or holes 14 in the studs. They stand with a height h, which is typically in the range of 0.5-3 mm, beyond the surface of the rolling surface.
  • the holding element 9 may be formed in one piece, but in this case it consists of two elements, namely an anchoring element 16 and a tip element 15th
  • the anchoring element 16 essentially serves to fasten the tip element 15 in the rubber-elastic material of the buffer 2. It is cylindrical in shape, and has on its side facing the buffer over a slightly tapered tip 20, which facilitates the introduction or a Einschiessen of such an element 9.
  • anchoring lamellae 17 are provided which are intended to prevent the retaining element 9 from being “worked out” of the buffer during the mechanical loading.
  • anchoring in rubber-elastic material is known to be problematic, and it is found that barb-shaped lamellae 17 is particularly suitable for sustainable attachment in such Environment allow.
  • the anchoring element 16 has, on the one hand, a recess 19 in the form of, for example, a tapered blind hole into which the tip element 15 can be inserted and fastened therein.
  • An attachment can take place via a frictional connection, positive locking (for example screws), compression or by gluing or the like.
  • the anchoring element 16 has a collar or flange 18 at its outermost end. This collar serves to prevent the retaining element 9 is completely submerged under the stress in the rubber-elastic material.
  • the anchoring element 16 has a diameter d in the range of 1-3 mm.
  • the collar has a thickness a in the range of 0.2 - 1.5 millimeters, and a circular ring width b in the range of 0.5 - 2 mm.
  • the anchoring element 16 is provided with an anchoring depth t in the range of 1-15 mm or more, preferably 2-7 mm or 5-10 mm.
  • the anchoring element may be made of metal such as steel, iron, stainless steel, brass, aluminum or other non-ferrous metals, wherein it may be cast or machined. Also possible is the use of plastic materials (lighter!), Such as polyethylene, polycarbonate, polypropylene, PVC, polyamide, etc., wherein such materials may also be fiber-reinforced. Anchoring elements of such plastic materials can be produced, for example, in an injection molding process.
  • the tip element 15 may be formed integrally with the anchoring element 16, it then being appropriate to subject the tip element 15 to a special hardening process or coating process.
  • the tip member 15 may preferably be as shown in FIG FIG. 5 shown, may be formed as a separate element which is incorporated into the anchoring element 16 or otherwise connected thereto.
  • the tip element may be a pin of one hardened material z.
  • metal such as hardened steel, sintered hard metals or other wear-resistant materials.
  • the tip element can also be coated by appropriate methods with a wear-minimizing surface (eg TiN, TiCN, etc.). But it is also possible to provide ceramic tips.
  • Such a tip element 15 normally has a diameter D in the range of 1 to 2.5 mm.
  • FIG. 6 Another embodiment of a buffer 2 is shown in FIG FIG. 6 shown.
  • the buffer has support members 9, as described above, and it is made as a whole of a rubber-elastic material in one piece. At its upper end 4 it has a recess 10, in which the pole tube (not shown) can be inserted.
  • the buffer 2 On the underside, the buffer 2 has an asymmetric rolling surface 5, and in the elastic rolling surface 5, six support members 9 are arranged substantially in two rows.
  • the slightly lenticular shape of the rolling surface, as in particular FIG. 6h ) Accordingly, these two rows are not parallel but rather following this lens shape arranged such that the arranged at the front end 6 support members 9 are close to each other and successively a greater distance is formed towards the rear end 7 out.
  • the rolling surface 5 also has a profile, but the profile has only transverse grooves 11, which are provided in a zigzag shape.
  • the buffer according to FIG. 6 is in particular additionally characterized in that it not only has a profile towards the bottom on the one hand in the area of the rolling surface 5, but also via a lateral profile, given as lateral projections 26.
  • lateral projections 26 which also by corresponding incisions in the outer contour can be given (which are then particularly preferably arranged in common alignment with transverse grooves 11), cause the buffer, when it penetrates, for example, in soft soil material, is better anchored in this soil material in the walking direction.
  • Preferred dimensions of these lateral projections 26 are arranged symmetrically on both sides, and there are, as in the present case, provided on each side 2 or 3 such projections.
  • FIG. 6 Another special feature of the embodiment according to FIG. 6 consists in that in the region of the front edge, that is above the front end 6, tapers respectively elongated recesses 23 are provided on both sides. Between these recesses 23 a chord 24 or a bridge remains as it were.
  • This configuration of the buffer means that the buffer when it rests with the rolling surface at its front end on the ground (that is, at the end of the rolling process) is softer, since in the region of the leading edge essentially only the slender elastic tendon 24 the Is able to absorb forces.
  • This softer design in the front region means that a more elastic and therefore more pleasant behavior is achieved during the repulsion process, and that less loud noises are produced when the support elements 9 impinge on a hard floor.
  • the tendon 24 can also be made interchangeable.
  • different tendons with different damping behavior for example, at the different tendons characterized by different colors, different damping behavior, for example, by different choice of material adjustable
  • different damping behavior for example, by different choice of material adjustable
  • FIG. 6e ) and i) will also be appreciated that it is possible to design the inside of the recess 10 specifically to ensure that a buffer can be withdrawn from a stick tip without undue burden.
  • a completely rubber-elastic designed buffer it is normally the case that it absorbs itself in this way in the sense of a suction cup on the stick, that he can barely be removed.
  • the cylindrical inner surface is provided with grooves or grooves, which extend in the longitudinal direction of the stick or the recess.
  • these grooves or grooves extend over the entire depth of the recess, but they can also be formed only in sections. It is also possible to ensure the similar effect by nubs or similar projections.

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  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Vibration Dampers (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The buffer (2) for a trekking walking stick (1) has a socket to receive the end of the stick and has a rolling surface (5) on its lower end. The rolling surface is slightly convex to aid push off when the stick is moved. The buffer is formed of an elastomeric material and can have harder studs (9) on its lower surface. The buffer can have at least four and preferably six or eight studs. The studs can be spaced longitudinally of the buffer and can be in rows. Claims include a method of making the buffer.

Description

TECHNISCHES GEBIETTECHNICAL AREA

Die vorliegende Erfindung betrifft einen Puffer für einen Stock, insbesondere für einen Trekking-, Geh- oder Nordic Walking-Stock, wobei der Puffer an seinem oberen Ende Mittel zur Befestigung an einem Stockrohr, insbesondere in Form einer Ausnehmung, und an seinem unteren Ende eine Abrollfläche aufweist, wobei die Abrollfläche in einer Querrichtung bezüglich des Abrollens im wesentlichen eben oder nur leicht konvex gekrümmt ausgebildet ist, jedoch in einer Längsrichtung senkrecht hierzu derart konvex gewölbt ist, dass sie beim Bewegungsablauf des Nutzers des Stockes eine Abrollfläche während der Abstoßbewegung mit dem Stock auf einer Unterlage bildet. Weiterhin betrifft die vorliegende Erfindung einen Trekking-, Geh- oder Nordic Walking-Stock mit einem derartigen Puffer sowie Verfahren zur Herstellung von derartigen Puffern oder Dämpfungselementen.The present invention relates to a buffer for a stick, in particular for a trekking, walking or Nordic walking pole, wherein the buffer at its upper end means for attachment to a pole tube, in particular in the form of a recess, and at its lower end a Rolling surface, wherein the rolling surface is formed in a transverse direction with respect to the rolling substantially flat or only slightly convex, but in a longitudinal direction perpendicular thereto is convex so convex that during the movement of the user of the stick a rolling surface during the repulsion movement with the stick on a base. Furthermore, the present invention relates to a trekking, walking or Nordic Walking stick with such a buffer and method for producing such buffers or damping elements.

STAND DER TECHNIKSTATE OF THE ART

Trekking und gleichermassen das Bergsteigen wird zunehmend aus gesundheitlichen Gründen unter Zuhilfenahme von wenigstens einem, bevorzugt sogar zwei Stöcken betrieben. Insbesondere das so genannte Nordic Walking beruht sogar darauf, dass zwei Stöcke verwendet werden und somit ein dynamischer und Gelenke schonender Bewegungsablauf möglich wird.Trekking and climbing is also increasingly practiced for health reasons with the aid of at least one, preferably even two sticks. In particular, the so-called Nordic Walking is based even on the fact that two sticks are used and thus a dynamic and joints gentle movement is possible.

Beide Techniken finden auf den unterschiedlichsten Untergründen statt. Insbesondere wird einerseits auf harten versiegelten Oberflächen wie zum Beispiel geteerten Straßen und Wegen gelaufen, andererseits aber beispielsweise auf weichen Oberflächen wie Landschaftswegen, Wiesen oder aber auch auf schneebedeckten oder eisbedeckten Oberflächen.Both techniques take place on a variety of surfaces. In particular, on the one hand on hard sealed surfaces such as paved roads and paths run, but on the other hand, for example, on soft surfaces such as landscape paths, meadows or even on snow-covered or ice-covered surfaces.

Bei Verwendung auf weichen Oberflächen oder bei schneebedeckten oder eisbedeckten Oberflächen kann üblicherweise die klassische Spitze, wie sie beispielsweise aus dem Skisport oder dem Langlaufsport bekannt ist, verwendet werden. Eine solche harte Spitze eignet sich aber nicht für harte, versiegelte Oberflächen, da einerseits die entstehenden Schläge für die Gelenke schädlich sind, und da andererseits eine zu geringe Haftungs- resp. Reibungswirkung für die Abstossung entsteht und eine zu grosse Lärmentwicklung/Geräuschentwicklung beim Aufschlag auftritt. Entsprechend wurden für solche Oberflächen bereits Puffer aus gummielastischem Material vorgeschlagen, welche beispielsweise auf einen konventionellen Stock aufgeschoben werden können.When used on soft surfaces or snow-covered or ice-covered Surfaces can usually be the classic lace, as it is known for example from skiing or cross-country skiing used. However, such a hard tip is not suitable for hard, sealed surfaces, because on the one hand, the resulting shocks for the joints are harmful, and on the other hand, too low liability resp. Friction effect for the repulsion arises and too much noise / noise occurs during impact. Accordingly, buffers of rubber-elastic material have already been proposed for such surfaces, which can be pushed onto a conventional floor, for example.

Um bei wechselnder Unterlage die Spitze nicht jedes Mal modifizieren zu müssen, wurden bereits Mischformen vorgeschlagen, bei welchen beispielsweise eine Art klassische Spitze durch einen solchen Gummipuffer hindurch tritt, und somit in Bezug auf die Abstoßung die Vorteile beider Systeme teilweise kombiniert werden. Ein solches System ist beispielsweise in der EP-A-0 978 298 beschrieben.In order to avoid having to modify the tip each time the base changes, mixed forms have already been proposed, in which, for example, a type of classic tip passes through such a rubber buffer, and thus the advantages of both systems are partially combined with respect to the repulsion. Such a system is for example in the EP-A-0 978 298 described.

Nach wie vor nachteilig an einem solchen System ist aber einerseits die Tatsache, dass die hervortretende Spitze nach wie vor hart auf harte Oberflächen auftrifft und somit für die Gelenke problematisch ist, und dass andererseits eine unangenehme Lärmentwicklung/Geräuschentwicklung auftritt, wenn die harte Spitze auf die Unterlage auftrifft. Zudem ist in dem Bewegungsmoment, wo eine solche Spitze beim Abrollen auf die Unterlage auftrifft der Widerstand resp. die Reibung in der Regel zur Abstoßung ungenügend.However, a disadvantage of such a system on the one hand, the fact that the protruding tip still hard on hard surfaces and thus is problematic for the joints, and that on the other hand, an unpleasant noise / noise development occurs when the hard tip on the Pad hits. In addition, in the moment of motion, where such a tip when rolling on the surface of the resistance resp. the friction is usually insufficient for repulsion.

Entsprechend wurden bereits Systeme vorgeschlagen, bei welchen die Spitze je nach Bedarf im Puffer versenkt werden kann oder durch diesen hervorgeschoben werden kann. Solche Systeme sind aber mechanisch komplex und aufwändig und entsprechend teuer, zudem sind sie infolge der beweglichen Teile in der Regel schmutzanfällig, und insbesondere erfordern auch sie eine Manipulation durch den Benutzer bei änderndem Terrain, was normalerweise unerwünscht ist.Accordingly, systems have been proposed in which the tip can be sunk in the buffer as needed or pushed out by this. However, such systems are mechanically complex and cumbersome and correspondingly expensive, in addition they are usually susceptible to dirt due to the moving parts, and in particular they also require manipulation by the user in changing terrain, which is normally undesirable.

Aus der DE 20318682 ist ein Stock bekannt, insbesondere Trekking- oder Nordic Walking-Stock, mit einem Stockrohr, dessen oberes Ende mit einem Handgriff versehen und dessen unteres Ende mit einem Puffer/Reibelement lösbar bestückt ist, wobei das Puffer/Reibelement zwischen seiner dem Stockrohr abgewandten Auflagefläche und seiner Stockrohraufnahme mit einem Dämpfungsbereich versehen ist. Dabei kann in der Lauffläche eine einzelne Hartmetallspitze, beispielsweise in Form eines Spikes gehalten sein, beispielsweise einvulkanisiert, um auch bei eisiger Unterlage eine ausreichende Verbindung zwischen dem Puffer/Reibelement und der Unterlage zu erreichen.From the DE 20318682 is a stick known, especially trekking or Nordic walking pole, with a pole tube, the upper end provided with a handle and the lower end with a buffer / friction element is detachably equipped, the Buffer / friction element is provided between its the pole pipe facing support surface and his stock pipe receiving a damping area. In this case, in the tread a single carbide tip, for example, be held in the form of a spike, for example, vulcanized to achieve a sufficient connection between the buffer / friction and the pad even with icy pad.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Hier greift die Erfindung ein. Der Erfindung liegt demnach die Aufgabe zugrunde, einen verbesserten, für unterschiedlichste Untergründe geeigneten Puffer für einen Trekking-, Geh- oder Nordic Walking-Stock zur Verfügung zu stellen. Insbesondere geht es darum, einen Puffer für einen Stock, insbesondere für einen Trekking-, Geh- oder Nordic Walking-Stock, zu verbessern, wobei der Puffer an seinem oberen Ende Mittel zur Befestigung an einem Stockrohr, z. B. in Form einer Ausnehmung, und an seinem unteren Ende eine Abrollfläche aufweist, wobei die Abrollfläche in einer Querrichtung bezüglich des Abrollens im wesentlichen eben oder nur leicht konvex gekrümmt (ggf. mit muldenförmigen Einbuchtungen oder Vertiefungen) ausgebildet ist, jedoch in einer Längsrichtung senkrecht hierzu derart konvex gewölbt ist, dass sie beim Bewegungsablauf des Nutzers des Stockes eine Abrollfläche während der Abstoßbewegung mit dem Stock auf einer Unterlage bildet.This is where the invention intervenes. The invention is therefore an object of the invention to provide an improved, suitable for a variety of substrates suitable buffers for a trekking, walking or Nordic walking pole. In particular, it is about to improve a buffer for a stick, especially for a trekking, walking or Nordic walking pole, the buffer at its upper end means for attachment to a pole, z. B. in the form of a recess, and at its lower end a rolling surface, wherein the rolling surface in a transverse direction with respect to the rolling substantially flat or only slightly convex curved (possibly with trough-shaped indentations or depressions) is formed, but in a longitudinal direction perpendicular For this purpose is curved convex so that it forms a rolling surface during the repulsion movement with the stick on a base during the movement of the user of the stick.

Die Lösung dieser Aufgabe wird durch die Merkmale des Anspruchs 1 erreicht, und damit u.a. dadurch, dass der Puffer wenigstens im Bereich der Abrollfläche aus einem gummielastischen Material besteht, und dass im gummielastischen Material wenigstens ein elastisch gelagertes, hartes, im wesentlichen inelastisches Halteelement angeordnet ist.The solution to this problem is achieved by the features of claim 1, and thus u.a. in that the buffer consists of a rubber-elastic material at least in the region of the rolling surface, and in that at least one elastically mounted, hard, substantially inelastic holding element is arranged in the rubber-elastic material.

Der Kern der Erfindung besteht somit darin, gewissermaßen die Wirkung einer Spitze durch wenigstens ein Halteelement zu übernehmen, welches im gummielastischen Material elastisch gelagert ist. Dies führt dazu, dass das harte, inelastische Halteelement, beispielsweise aus Metall und/oder Keramik, in weiche Untergründe eingreifen kann und somit ähnlich einer klassischen Stockspitze für solche weiche Untergründe geeignet ist. Dadurch aber, dass das Halteelement in elastischer Weise im gummielastischen Material gelagert ist, ergibt sich ein überraschender Effekt bei der Verwendung auf einer harten Unterlage, dass nämlich durch die elastische Einbettung das Halteelement keine harten Schläge auf den Stockgriff überträgt, und somit für den Bewegungsapparat keine negativen Wirkungen zeigt, und dass weiterhin aufgrund der elastischen Einbettung im wesentlichen keine unangenehmen Schlaggeräusche entstehen, wie sie bei konventionellen Spitzen unvermeidlich auftreten. Die Wirkung ist somit ähnlich einem Spike, wie man ihn aus dem Bereich der Winterreifen kennt.The essence of the invention is therefore to take over, so to speak, the effect of a tip by at least one holding element which is elastically mounted in the rubber-elastic material. As a result, the hard, inelastic holding element, for example made of metal and / or ceramic, can engage in soft substrates and is therefore suitable for such soft substrates, similar to a conventional stick tip. As a result, however, that the holding element is mounted in an elastic manner in the rubber-elastic material, there is a surprising effect in the Use on a hard surface, namely that by the elastic embedding the retaining element no hard blows on the pole grip, and thus shows no negative effects for the musculoskeletal system, and that continue to arise due to the elastic embedding substantially no unpleasant impact noise, as in conventional Peaks inevitably occur. The effect is thus similar to a spike, as known from the field of winter tires.

Das Halteelement verfügt dabei über eine Härte, welche bevorzugtenmaßen auf der Mohs-Skala grösser ist als 3, insbesondere bevorzugt größer als 4, 5, oder sogar größer als 6 oder 7. Die angegebene Härte bezieht sich dabei auf den Bereich des Halteelementes, welcher mit dem Untergrund in Kontakt tritt oder in diesen eindringt. Jene Bereiche des Halteelementes, welche nicht mit dem Untergrund in Kontakt treten oder in diesen eindringen, können ohne weiteres eine geringere Härte aufweisen, sie können sogar aus weichem und teilweise elastischem Material bestehen, solange eine genügende Halterung im Material des Puffers gewährleistet ist.In this case, the holding element has a hardness which is preferably greater than 3, particularly preferably greater than 4, 5 or even greater than 6 or 7, on the Mohs scale. The hardness stated here refers to the region of the holding element which coincides with enters or enters the subsoil. Those areas of the holding element, which do not come into contact with the substrate or penetrate into it, can easily have a lower hardness, they can even be made of soft and partially elastic material, as long as a sufficient support in the material of the buffer is ensured.

Das wenigstens eine elastisch gelagerte Halteelement steht wenigstens teilweise über die Abrollfläche vor, typischerweise im Bereich von einem halben bis 2 oder 3 mm oder mehr. Typischerweise ist dabei die Verankerungstiefe des Halteelementes im Puffer grösser als die Höhe, welche über die Abrollfläche hervor steht.The at least one elastically mounted retaining element projects at least partially beyond the rolling surface, typically in the range of one-half to two or three millimeters or more. Typically, the anchoring depth of the retaining element in the buffer is greater than the height which protrudes beyond the rolling surface.

Bevorzugtermaßen ist generell die Abrollfläche asymmetrisch ausgebildet, indem sie am vorderen Ende (das heisst in Laufrichtung) hochgezogen ist und indem das hintere Ende im wesentlichen eine Spitze bildet. So ergibt sich ein ideales Abrollverhalten bei z. B. in der Regel eher langen Stöcken beim Nordic Walking.Preferably, the rolling surface is generally asymmetric in shape by being pulled up at the front end (i.e., in the direction of travel) and with the rear end substantially forming a point. This results in an ideal rolling behavior at z. As a rule, rather long sticks during Nordic walking.

Gemäß einer weiteren bevorzugten Ausführungsform sind wenigstens 2, bevorzugt wenigstens 4, wenigstens 6 oder wenigstens 8 Halteelemente an respektive in oder auf der Abrollfläche angeordnet. Die Halteelemente sind bevorzugtermaßen in Längsrichtung, das heisst in Laufrichtung, beabstandet angeordnet, wobei wenigstens 2 oder wenigstens 3 oder wenigstens 4 Halteelemente in wenigstens einer Reihe oder zueinander insbesondere seitlich versetzt in Längsrichtung angeordnet sein können. Diese besondere Anordnung der Halteelemente erweist sich als äußerst geeignet insbesondere im Zusammenhang mit der spezifisch ausgestalteten, in Aufrichtung konvexen Abrollfläche. Es wird nämlich so sichergestellt, dass während des gesamten Bewegungsablaufes stets ein Halteelement Kontakt mit dem Untergrund aufweist.According to a further preferred embodiment, at least 2, preferably at least 4, at least 6 or at least 8 holding elements are arranged on respectively in or on the rolling surface. The holding elements are preferably arranged spaced apart in the longitudinal direction, that is to say in the running direction, wherein at least 2 or at least 3 or at least 4 holding elements can be arranged in at least one row or in particular offset laterally in the longitudinal direction. This particular arrangement of the holding elements proves to be extremely suitable in particular in connection with the specifically configured, upwardly convex rolling surface. It is thus ensured that during the entire movement always a holding element contact with the ground.

Eine bevorzugte Ausführungsform zeichnet sich dadurch aus, dass wenigstens 4, bevorzugt 6 oder 8 Halteelemente angeordnet sind, und dass die Halteelemente in wenigstens 2, in Querrichtung versetzten Reihen von entsprechend 2, 3 oder 4 Halteelementen angeordnet sind. Indem verschiedene Reihen seitlich versetzt angeordnet sind ergibt sich zudem der Vorteil, dass bei schrägem Aufsetzen oder bei unregelmäßigem Untergrund stets Halteelemente Kontakt mit dem Untergrund aufnehmen.A preferred embodiment is characterized in that at least 4, preferably 6 or 8 holding elements are arranged, and that the holding elements are arranged in at least 2, offset in the transverse direction rows of corresponding 2, 3 or 4 holding elements. The fact that different rows are arranged laterally offset results in addition the advantage that with oblique placement or with irregular background, holding elements always make contact with the ground.

Eine besonders gute Eignung für unterschiedlichste Unterlagen kann erreicht werden, wenn gemäß einer weiteren bevorzugten Ausführungsform die Abrollfläche zudem über ein Profil verfügt. Dabei wird bevorzugtermaßen das wenigstens eine Halteelement auf wenigstens einer Stollenoberfläche des Profiles angeordnet. Das Profil kann über wenigstens eine, bevorzugtermaßen zentrale Längsrille und über wenigstens 2, 3 oder 4 insbesondere seitlich symmetrisch davon abzweigende Querrillen verfügen, und es können zwei in Längsrichtung verlaufende Reihen von zum Beispiel je vier Halteelementen auf den durch die Rillen gebildeten Stollenoberflächen der Abrollfläche angeordnet sein.A particularly good suitability for a variety of documents can be achieved if according to a further preferred embodiment, the rolling surface also has a profile. In this case, the at least one holding element is preferably arranged on at least one lug surface of the profile. The profile may have at least one, preferably central, longitudinal groove and at least 2, 3 or 4 lateral symmetrically branching transverse grooves, and two longitudinally extending rows of, for example, four holding elements each may be arranged on the lug surfaces of the rolling surface formed by the grooves be.

Bevorzugtermaßen besteht der Puffer ganz und einstückig aus einem gummielastischen Material, insbesondere bevorzugt aus einem gegebenenfalls vulkanisierten Natur- und/oder Synthesekautschuk, insbesondere bevorzugt mit eine Härte von 20 bis 80 Shore A, bevorzugt von 50 - 70 Shore A, z.B. 55-64 Shore A. Es können beispielsweise typische Reifennaterialien verwendet werden.Preferably, the buffer consists wholly and in one piece of a rubber-elastic material, particularly preferably of an optionally vulcanized natural and / or synthetic rubber, particularly preferably having a hardness of 20 to 80 Shore A, preferably 50-70 Shore A, e.g. 55-64 Shore A. For example, typical tire materials can be used.

Gemäß einer anderen bevorzugten Ausführungsform ist das Halteelement in Form eines Stiftes ausgebildet, welcher mit seinem ersten Ende im gummielastischen Material eingebettet ist, und welcher mit seinem zweiten Ende über die Oberfläche der Abrollfläche vorsteht. Dabei ist der am zweiten Ende vorstehende Bereich zur Abrollfläche durch einen umlaufenden Flansch oder Kragen begrenzt respektive abgestützt. Typischerweise steht das zweite Ende mit einer Höhe im Bereich von 0.05 - 5 mm, insbesondere bevorzugt im Bereich von 1-2 mm, über die Oberfläche der Abrollfläche vor. Der Kragen verfügt bevorzugtermaßen über eine Kreisringbreite von 0.5-1.5 mm.According to another preferred embodiment, the holding element is designed in the form of a pin, which is embedded with its first end in the rubber-elastic material, and which projects with its second end over the surface of the rolling surface. In this case, the area projecting at the second end to the rolling surface by a circumferential flange or collar is limited or supported. Typically, the second end is at a height in the Range of 0.05 - 5 mm, particularly preferably in the range of 1-2 mm, over the surface of the rolling surface before. The collar preferably has a circular ring width of 0.5-1.5 mm.

Das Halteelement verfügt an seinem zweiten Ende eine besonders harte, insbesondere gehärtete Spitze. Das Halteelement weist erfindungsgemäß ein einstückiges Verankerungselement auf, welches im gummielastischen Material bis auf einen Flansch oder Kragen (der Flansch oder Kragen kann entweder einstückig mit dem Verankerungselement ausgebildet sein oder als individuelles Element) eingebettet ist, wobei das Verankerungselement an seiner zur Abrollfläche gewandten Seite über eine Ausnehmung verfügt, in welcher ein Spitzenelement, beispielsweise in Form eines Metallstiftes, eingelassen und darin befestigt ist. Das Verankerungselement kann beispielsweise aus Kunststoff, Eisen, Stahl, insbesondere rostfreiem Stahl, Messing, Aluminium oder anderen Nichteisenmetallen bestehen. Das Spitzenelement kann beispielsweise aus Keramik, gehärtetem Metall, insbesondere gehärtetem Stahl, gesinterten Hartmetallen oder weiteren verschleißresistenten Materialien bestehen. Das Spitzenelement kann auch durch entsprechende Verfahren mit einer verschleißminimierenden Oberfläche beschichtet sein (z.B. TiN, TiCN, etc.).The holding element has at its second end a particularly hard, in particular hardened tip. The retaining element according to the invention comprises a one-piece anchoring element which is embedded in the rubber-elastic material except for a flange or collar (the flange or collar can either be integrally formed with the anchoring element or as an individual element), wherein the anchoring element on its side facing the rolling surface on has a recess in which a tip element, for example in the form of a metal pin, embedded and secured therein. The anchoring element may for example consist of plastic, iron, steel, in particular stainless steel, brass, aluminum or other non-ferrous metals. The tip element may for example consist of ceramic, hardened metal, in particular hardened steel, sintered hard metals or other wear-resistant materials. The tip member may also be coated with a wear minimizing surface by appropriate methods (e.g., TiN, TiCN, etc.).

Bevorzugtermaßen verfügt das Verankerungselement gemäß einer weiteren bevorzugten Ausführungsform im im gummielastischen Material eingebetteten Bereich über Mittel zur Verankerung, insbesondere bevorzugt in Form von Verankerungslamellen. Bevorzugtermaßen sind mehrere umlaufende Verankerungslamellen angeordnet, welche in der der Abrollfläche abgewandten Richtung konisch ausgebildet sind, und welche in der der Abrollfläche zugewandten Richtung gestuft ausgebildet sind. Bei einer solchen spezifischen Ausbildung lässt sich das Verankerungselement oder das ganze Halteelement im weiter unten beschriebenen Verfahren besonders einfach in den Puffer einfügen oder einschießen.According to a further preferred embodiment, the anchoring element preferably has in the region embedded in the rubber-elastic material anchoring means, particularly preferably in the form of anchoring lamellae. Preferably, a plurality of circumferential anchoring slats are arranged, which are conical in the direction away from the rolling surface, and which are stepped in the direction of the rolling surface facing direction. In such a specific embodiment, the anchoring element or the entire holding element can be particularly easily inserted or einschießen in the buffer in the method described below.

Eine besonders einfache Konstruktion ist möglich, wenn im gummielastischen Material ein einziges, elastisch gelagertes, hartes, inelastisches Halteelement angeordnet ist, wobei dieses bevorzugt wenigstens teilweise nach unten über die Abrollfläche hervorsteht. Das Halteelement weist dabei ein Verankerungselement auf, welches im gummielastischen Material bevorzugt bis auf einen Flansch eingebettet ist, wobei das Halteelement im im gummielastischen Material eingebetteten Bereich Mittel zur Verankerung, insbesondere bevorzugt in Form von Verankerungslamellen aufweist. Das Verankerungselement kann an seiner zur Abrollfläche gewandten Seite über eine Ausnehmung verfügen, in welcher ein Spitzenelement eingelassen und darin befestigt ist, wie dies oben erläutert wurde. Ein solches einziges Halteelement ist insbesondere bevorzugt in Querrichtung zentral angeordnet.A particularly simple construction is possible if a single, elastically mounted, hard, inelastic holding element is arranged in the rubber-elastic material, this preferably protruding at least partially downwards over the rolling surface. The retaining element has an anchoring element, which in rubber-elastic material is preferably embedded to a flange, wherein the holding element in the embedded rubber-elastic material area means for anchoring, particularly preferably in the form of anchoring lamellae. The anchoring element may have on its side facing the rolling surface on a recess in which a tip member is embedded and secured therein, as explained above. Such a single holding element is particularly preferably arranged centrally in the transverse direction.

Der Puffer kann zusätzlich mit einer spezifischen Flexibilisierung versehen sein, dies insbesondere dann, wenn er, wie dies oben erläutert wurde, ganz und einstückig aus einem gummielastischen Material besteht. Diese spezifische Flexibilisierung ist möglich, indem an den weicher zu strukturierenden Regionen Ausnehmung vorgesehen werden. Eine besonders bevorzugte derartige Region ist die Vorderkante des Puffers. So ist es gemäß einer weiteren bevorzugten Ausführungsform der Erfindung vorteilhaft, wenn der Puffer an seiner Vorderkante eine durch zwei seitlich vorgesehene Ausnehmungen gebildete Sehne aufweist, wobei sich diese Sehne bevorzugt über wenigstens 10%, insbesondere bevorzugt über im Bereich von 20-40% der Gesamtlänge der Vorderkante erstreckt. Analoge Massnahmen können an der Hinterkante getroffen werden.The buffer may additionally be provided with a specific flexibility, this in particular if, as explained above, it consists entirely and in one piece of a rubber-elastic material. This specific flexibilization is possible by providing recesses in the regions to be softer. A particularly preferred such region is the leading edge of the buffer. Thus, according to a further preferred embodiment of the invention, it is advantageous if the buffer has at its leading edge a chord formed by two recesses provided laterally, this chord preferably being over at least 10%, particularly preferably in the range of 20-40% of the total length the leading edge extends. Similar measures can be taken at the trailing edge.

Um die Griffigkeit des Puffers insbesondere in weichem Material, in welches der Puffer wesentlich eindringt, zu erhöhen, ist es zudem möglich, auch seitlich ein Profil vorzusehen und nicht nur nach unten auf der Abrollfläche. So ist es gemäß einer weiteren bevorzugten Ausführungsform möglich, den Puffer mit einer asymmetrische Abrollfläche auszubilden, indem sie am vorderen Ende hochgezogen ist und indem das hintere Ende im wesentlichen eine Spitze bildet, und zusätzlich seitliche Vorsprünge vorzusehen, welche seitlich über die Außenkontur des Puffers hervortreten, und entsprechend einen besseren Eingriff in das Material des Bodens erlauben. Dabei werden bevorzugt wenigstens zwei, insbesondere bevorzugt wenigstens drei derartige seitliche Vorsprünge auf jeder Seite des Puffers vorgesehen.In order to increase the grip of the buffer, especially in soft material, in which the buffer penetrates substantially, it is also possible to provide a profile on the side and not only down on the rolling surface. Thus, according to another preferred embodiment, it is possible to form the buffer with an asymmetric rolling surface by being pulled up at the front end and by making the rear end essentially a point, and additionally providing lateral projections which protrude laterally beyond the outer contour of the buffer , and accordingly allow a better engagement in the material of the soil. In this case, at least two, in particular preferably at least three such lateral projections are preferably provided on each side of the buffer.

Weiterhin betrifft die vorliegende Erfindung einen Trekking- oder Nordic Walking-Stock mit einem Puffer, wie er oben beschrieben wurde.Furthermore, the present invention relates to a trekking or Nordic Walking pole with a buffer, as described above.

Zudem betrifft die vorliegende Erfindung ein Verfahren zur Herstellung eines Puffers, wie er oben beschrieben wurde. Das Verfahren ist insbesondere dadurch gekennzeichnet, dass das wenigstens eine Halteelement an den geeigneten Stellen, beispielsweise auf den Stollen eines Profils, im wesentlichen senkrecht zur Abrollfläche in die Abrollfläche eingeschossen wird, wobei gegebenenfalls zuvor entsprechende Sacklöcher ausgebohrt, ausgeschmolzen, ausgebrannt oder bereits beim Herstellungsprozess des Rohlings beim Urformprozess vorgesehen wird.In addition, the present invention relates to a method for producing a buffer as described above. The method is in particular characterized in that the at least one holding element is injected at the suitable locations, for example on the lugs of a profile, substantially perpendicular to the rolling surface in the rolling surface, where appropriate previously drilled corresponding blind holes, melted out, burned out or already in the manufacturing process of Blank is provided during the primary molding process.

Eine Alternative des Verfahrens besteht darin, dass das wenigstens eine Halteelement an den geeigneten Stellen im wesentlichen senkrecht zur Abrollfläche in die Abrollfläche in entsprechend ausgebohrte oder bereits beim Herstellungsprozess des Rohlings vorgesehene Sacklöcher eingeschoben und darin verklebt wird.An alternative of the method is that the at least one retaining element the appropriate locations substantially perpendicular to the rolling surface in the rolling surface in accordance with drilled or provided during the manufacturing process of the blank blind holes inserted and glued therein.

Weiter bevorzugte Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen beschrieben.Further preferred embodiments of the invention are described in the dependent claims.

KURZE ERLÄUTERUNG DER FIGURENBRIEF EXPLANATION OF THE FIGURES

Die Erfindung soll nachfolgend anhand von Ausfübrungsbeispielen im Zusammenhang mit den Zeichnungen näher erläutert werden. Es zeigen:

Fig. 1
eine seitliche Ansicht auf einen Stock mit einem erfindungsgemässen Puffer;
Fig. 2
eine seitliche detaillierte Ansicht auf einen Puffer ohne Stockrohr;
Fig. 3
eine Aufsicht auf die Abrollfläche entlang der Richtung R in Fig. 2;
Fig. 4
a) eine seitliche Ansicht gemäss Fig. 1 und b) einen Schnitt gemäss der Linie A-A in Fig. 4a);
Fig. 5
eine seitliche Ansicht auf ein Halteelement in teilweiser Schnittdarstellung; und
Fig. 6
unterschiedliche Ansichten auf einen weiteren erfindungsgemässen Puffer, wobei a) eine seitliche Ansicht zeigt, b) eine perspektivische Ansicht von oben auf die hintere Oberseite, c) eine perspektivische Ansicht von unten auf die Abrollfläche, d) eine perspektivische Ansicht von unten auf die hintere Unterseite, e) eine Ansicht von hinten, f) eine Ansicht von vom, g) eine Ansicht von unten auf die Abrollfläche entlang der Stockachse, h) eine Ansicht von unten auf die Abrollfläche von schräg vorne, und i) eine Ansicht von oben.
The invention will be explained in more detail below with reference to Ausfübrungsbeispielen in connection with the drawings. Show it:
Fig. 1
a side view of a stick with a buffer according to the invention;
Fig. 2
a side detailed view of a buffer without pole tube;
Fig. 3
a plan view of the rolling surface along the direction R in Fig. 2 ;
Fig. 4
a) a lateral view according to Fig. 1 and b) a section along the line AA in FIG Fig. 4a );
Fig. 5
a side view of a holding element in a partial sectional view; and
Fig. 6
different views of a further inventive buffer, wherein a) shows a side view, b) a perspective view from above on the rear top, c) a perspective view from below of the rolling surface, d) a perspective view from below of the rear bottom , e) a view from behind, f) a view from the, g) a view from below of the rolling surface along the axis of the pole, h) a view from below of the rolling surface obliquely from the front, and i) a view from above.

WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS FOR CARRYING OUT THE INVENTION

Anhand der Figuren, welche zur Illustration der Erfindung und nicht zur Einschränkung des Schutzbereiches, wie er in den Patentansprüchen formuliert ist, herangezogen werden sollen, werden nun folgend Ausführungsbeispiele dargestellt.With reference to the figures, which are to be used to illustrate the invention and not to limit the scope of protection as formulated in the claims, will now be illustrated embodiments.

Figur 1 zeigt einen Nordic-Walking oder Trekking-Stock 1 im unteren, das heißt üblicherweise beim Gebrauch dem Boden 3 zugewandten Bereich. An der nicht dargestellten Oberseite verfügt ein solcher Stock üblicherweise über einen Handgriff mit einer Handschlaufe, an welchem der Stock gegriffen wird. FIG. 1 shows a Nordic walking or trekking pole 1 in the lower, that is usually in use facing the ground 3 area. At the not As shown, such a stick usually has a handle with a hand strap on which the stick is gripped.

Der Stock verfügt über ein Stockrohr 1a, bei welchem es sich beispielsweise um ein Aluminiumrohr und/oder um ein faserverstärktes Kunststoffrohr handeln kann.The stick has a pole tube 1a, which can be, for example, an aluminum tube and / or a fiber-reinforced plastic tube.

Im Bereich des unteren Endes ist an diesem Stockrohr 1a ein Puffer 2 befestigt. Der Puffer 2 ist dazu an seinem oberen Ende 4 mit einem Sackloch respektive einer Ausnehmung 10 (vergleiche Figur 2) versehen, in welche das Stockrohr 1a eingeschoben resp. ggf. sogar zusätzlich in dieser verklebt ist. Das Stockrohr 1a kann dabei entweder ein nicht weiter bearbeitetes oder mit zusätzlichen Elementen bestücktes Rohrende aufweisen (in diesem Fall kann in der Ausnehmung zum Beispiel eine Kunststoffhülse vorgesehen werden, welche über einen Stoffschluss oder einen Kraftschluss am Stock und/oder am Puffer befestigt ist), es ist aber auch möglich, am Stockrohr 1a unten eine Spitze wie z.B. aus dem Skisport oder dem Trekkingbereich bekannt, vorzusehen, das heißt in diesem Fall wird der Puffer 2 auf eine solche Spitze aufgeschoben.In the area of the lower end, a buffer 2 is attached to this pole tube 1a. The buffer 2 is at its upper end 4 with a blind hole or a recess 10 (see FIG. 2 ), in which the pole tube 1a inserted respectively. possibly even additionally glued in this. The pole tube 1a can either have a not further processed or fitted with additional elements pipe end (in this case, for example, a plastic sleeve can be provided in the recess, which is attached via a fabric connection or a traction on the floor and / or the buffer), but it is also possible, on the pole tube 1a down a tip, for example, from the skiing or trekking known, provide, that is, in this case, the buffer 2 is pushed onto such a tip.

Der Puffer 2 verfügt an seinem unteren Ende über eine Abrollfläche 5. Diese Abrollfläche 5 verfügt, über ein vorderes Ende 6 und über ein hinteres Ende 7, wobei sich vorne und hinten auf die Laufrichtung bezieht.The buffer 2 has at its lower end a rolling surface 5. This rolling surface 5 has, via a front end 6 and a rear end 7, wherein the front and rear refers to the direction.

Mit anderen Worten ist die Darstellung in Figur 1 so zu verstehen, dass ein Läufer in der Papierebene von rechts nach links läuft, und entsprechend beim Aufsetzen bei im wesentlichen vertikalem Stock zunächst die Abrollfläche beim hinteren Ende 7 aufsetzt, und beim Fortschreiten des Läufers durch die zunehmende Linksneigung des Stockes der Stock auf der Abrollfläche 5 abrollt bis am Ende kurz vor dem Abheben des Stockes die Abrollfläche nur noch im Bereich des vorderen Endes 6 auf dem Boden 3 aufliegt.In other words, the illustration is in FIG. 1 to understand that a runner runs in the plane of the paper from right to left, and accordingly when putting on a substantially vertical stick first the rolling surface at the rear end 7 touches, and the progress of the runner by the increasing leftward tilt of the stick on the rolling surface 5 rolls until the end just before the lifting of the stick, the rolling surface rests only in the region of the front end 6 on the floor 3.

Die Form ist dabei insofern für den Bewegungsablauf optimiert, als eine von der Seite betrachtet gewissermaßen dreieckförmige Struktur vorgegeben wird, deren langer, nach hinten gewandter Schenkel im wesentlichen entlang der Achse des Stockes gebildet wird, wobei die untere Spitze dieses langen Schenkels durch das hintere Ende 7 gebildet wird, und deren unterer kurzer Schenkel zum Boden hin konvex als Abrollfläche ausgebildet ist, so dass die nach vorne gerichtete Spitze durch das vordere Ende 6 der Abrollfläche 5 gebildet wird.The shape is optimized insofar as the movement, as viewed from the side of a somewhat triangular structure is given, the long, rearwardly facing leg is formed substantially along the axis of the stick, the lower tip of this long leg through the rear end 7 is formed, and whose lower short leg convex to the ground as a rolling surface is formed so that the forward tip is formed by the front end 6 of the rolling surface 5.

Auf der Abrollfläche 5 respektive in dieser Abrollfläche 5 eingelassen befinden sich Halteelemente 9, welche etwas über die Abrollfläche zum Boden hin hervortreten. Diese sind, wie aus Figur 2 ersichtlich wird, stiftförmig ausgebildet und ein wesentlicher Teil dieser Stifte ist im Material des Puffers 2 eingelassen.On the rolling surface 5 respectively embedded in this rolling surface 5 are holding elements 9, which protrude slightly above the rolling surface towards the ground. These are how out FIG. 2 is apparent, pin-shaped and a substantial part of these pins is embedded in the material of the buffer 2.

Der Puffer 2 ist in seiner Masse aus einem gummielastischen Kunststoff Material gefertigt, es handelt sich dabei zum Beispiel um im Bereich der Reifenherstellung übliche Materialien, das heisst in Frage kommen zum Beispiel vulkanisierte Synthesekautschuke. Ein solcher Puffer 2 kann in einem Urformverfahren hergestellt werden.The buffer 2 is made in its mass of a rubber-elastic plastic material, it is, for example, in the field of tire manufacturing usual materials, that is, for example in question come vulcanized synthetic rubbers. Such a buffer 2 can be produced in a primary molding process.

Es ist auch möglich, den Puffer aus unterschiedlichen Materialien herzustellen, so beispielsweise im dem oberen Ende zugewandten Bereich aus einem ersten, gegebenenfalls sogar unelastischen Kunststoff Material, und im Bereich der Abrollfläche beispielsweise mit einer Höhe von 2 bis 10 mm aus einem gummielastischen Kunststoff-Material. Ein solcher Puffer kann entweder in einem Koextrusionsverfahren oder in einem Zweikomponenten-Spritzverfahren hergestellt werden oder zum Beispiel durch Kleben der unterschiedlichen Materialien. Wesentlich ist auf jeden Fall, dass im Bereich der Abrollfläche der Puffer aus einem gummielastischen Material besteht, da ansonsten die erfindungsgemäße gummielastische Halterung der Halteelemente 9 nicht möglich ist.It is also possible to produce the buffer of different materials, such as in the upper end facing region of a first, possibly even inelastic plastic material, and in the rolling surface, for example, with a height of 2 to 10 mm of a rubber-elastic plastic material , Such a buffer may be prepared either by a coextrusion process or by a two-component injection process, or by, for example, bonding the different materials. It is essential in any case that in the area of the rolling surface of the buffer consists of a rubber-elastic material, otherwise the inventive rubber-elastic mounting of the holding elements 9 is not possible.

Zusätzlich verfügt der Puffer 2 bei der Abrollfläche 5 vorzugsweise über ein Profil 8. Dieses wird am einfachsten aus Figur 3 ersichtlich, welche eine Ansicht entlang der Richtung R, wie sie in Figur 2 dargestellt ist, repräsentiert. Bei dem Profil 8 sind unterschiedliche Rillen 11, 12 im gummielastischen Material vorgesehen. Zwischen diesen Rillen, mit einer Tiefe z.B. im Bereich von 1-4 mm, bilden sich die Stollen des Profils. Die Stollen verfügen jeweils über eine Oberfläche 13, welche wenigstens abschnittsweise eben respektive in Längsrichtung 21 konvex ausgebildet ist. Auf diesen Oberflächen 13 respektive in den darunter liegenden Stollen sind die Halterungselemente 9 eingelassen.In addition, the buffer 2 in the rolling surface 5 preferably has a profile 8. This is the easiest FIG. 3 which shows a view along the direction R, as shown in FIG FIG. 2 is represented. In the profile 8 different grooves 11, 12 are provided in the rubber-elastic material. Between these grooves, with a depth, for example, in the range of 1-4 mm, form the cleats of the profile. The studs each have a surface 13 which is at least partially planar or respectively convex in the longitudinal direction 21. On these surfaces 13 respectively in the underlying studs, the support elements 9 are embedded.

Im Zusammenhang mit dem typischen Bewegungsablauf erweist es sich als vorteilhaft, ein Profil vorzusehen, bei welchem eine zentrale Längsrille 12 vorgesehen ist, von welcher seitlich Querrillen 13 abzweigen. So bilden sich zwei in Längsrichtung parallel verlaufende Reihen von Stollen, auf deren Oberflächen die Halteelemente 9 in ebenfalls zwei Reihen angeordnet sein können. Um eine Abnützung im besonders belasteten Randbereich am vorderen Ende 6 respektive am hinteren Ende 7 respektive ein Ausbrechen von Stollen zu verhindern, erweist es sich als vorteilhaft, die Längsrille 12 nur über den zentralen Abschnitt verlaufen zu lassen, so dass die letzten Stollen an den Enden 6, 7 gewissermaßen miteinander verbunden sind.In connection with the typical sequence of movements, it proves to be advantageous to provide a profile in which a central longitudinal groove 12 is provided, from which laterally transverse grooves 13 branch off. Thus, two longitudinally parallel rows of lugs form, on the surfaces of which the holding elements 9 can likewise be arranged in two rows. In order to prevent wear in the particularly loaded edge area at the front end 6 and at the rear end 7 respectively a breaking out of studs, it proves advantageous to let the longitudinal groove 12 extend only over the central portion, so that the last studs at the ends 6, 7 are so to speak interconnected.

Die Einbettung respektive Befestigung der Halterungselemente 9 im Puffer 2 soll im Detail unter Zuhilfenahme von Figur 4 erläutert werden. Figur 4a zeigt eine Ansicht analog zur Ansicht gemäss Figur 1, wobei zusätzlich die Längsrichtung 21 angegeben ist, sowie die Schnittebene A-A, welche in Figur 4b) dargestellt ist. Dabei wird ersichtlich, wie die Halteelemente 9 in Ausnehmungen respektive Bohrungen oder Löchern 14 in den Stollen eingelassen sind. Sie stehen dabei mit einer Höhe h, welche typischerweise im Bereich von 0.5-3 mm liegt, über die Oberfläche der Abrollfläche hinaus.The embedding respectively attachment of the support members 9 in the buffer 2 is in detail with the aid of FIG. 4 be explained. FIG. 4a shows a view analogous to the view according to FIG. 1 , wherein additionally the longitudinal direction 21 is indicated, as well as the sectional plane AA, which in FIG. 4b ) is shown. It is apparent how the retaining elements 9 are recessed in recesses holes or holes 14 in the studs. They stand with a height h, which is typically in the range of 0.5-3 mm, beyond the surface of the rolling surface.

Ein mögliches Halteelement 9 ist im Detail in Figur 5 dargestellt. Das Halteelement 9 kann einstückig ausgebildet sein, in diesem Fall besteht es aber aus zwei Elementen, nämlich aus einem Verankerungselement 16 sowie einem Spitzenelement 15.One possible retaining element 9 is shown in detail in FIG FIG. 5 shown. The holding element 9 may be formed in one piece, but in this case it consists of two elements, namely an anchoring element 16 and a tip element 15th

Das Verankerungselement 16 dient im wesentlichen dazu, das Spitzenelement 15 im gummielastischen Material des Puffers 2 zu befestigen. Es ist dazu zylindrisch ausgebildet, und verfügt an seiner dem Puffer zugewandten Seite über eine leicht konisch zulaufende Spitze 20, welche die Einführung oder ein Einschiessen eines solchen Elementes 9 erleichtert.The anchoring element 16 essentially serves to fasten the tip element 15 in the rubber-elastic material of the buffer 2. It is cylindrical in shape, and has on its side facing the buffer over a slightly tapered tip 20, which facilitates the introduction or a Einschiessen of such an element 9.

Zudem sind Verankerungslamellen 17 vorgesehen, welche verhindern sollen, dass das Halterungselement 9 bei der mechanischen Belastung nicht aus dem Puffer "herausgearbeitet" wird. In dieser Hinsicht ist eine Verankerung in gummielastischem Material bekanntlich nicht unproblematisch, und es zeigt sich, dass widerhaken-förmige Lamellen 17 eine besondere Eignung zur nachhaltigen Befestigung in einer solchen Umgebung ermöglichen.In addition, anchoring lamellae 17 are provided which are intended to prevent the retaining element 9 from being "worked out" of the buffer during the mechanical loading. In this respect, anchoring in rubber-elastic material is known to be problematic, and it is found that barb-shaped lamellae 17 is particularly suitable for sustainable attachment in such Environment allow.

An seinem der Abrollfläche 5 zugewandten Ende verfügt das Verankerungselement 16 einerseits über eine Ausnehmung 19 in Form eines beispielsweise konisch zulaufenden Sackloches, in welches das Spitzenelement 15 eingeführt und darin befestigt werden kann. Eine Befestigung kann dabei über einen Kraftschluss, Formschluss (z.B. Schrauben), Verpressung oder über ein Kleben oder ähnliches erfolgen.At its end facing the rolling surface 5, the anchoring element 16 has, on the one hand, a recess 19 in the form of, for example, a tapered blind hole into which the tip element 15 can be inserted and fastened therein. An attachment can take place via a frictional connection, positive locking (for example screws), compression or by gluing or the like.

Zudem verfügt das Verankerungselement 16 über einen Kragen oder Flansch 18 an seinem äußersten Ende. Dieser Kragen dient dazu, zu verhindern, dass das Halteelement 9 bei der Beanspruchung in das gummielastische Material vollständig versenkt wird.In addition, the anchoring element 16 has a collar or flange 18 at its outermost end. This collar serves to prevent the retaining element 9 is completely submerged under the stress in the rubber-elastic material.

Das Verankerungselement 16 verfügt über einen Durchmesser d im Bereich von 1-3 mm. Der Kragen verfügt über eine Dicke a im Bereich von 0.2 - 1.5 Millimetern, sowie über eine Kreisringbreite b im Bereich von 0.5 - 2 mm. Weiterhin ist das Verankerungselement 16 mit einer Verankerungstiefe t im Bereich von 1-15 mm oder mehr, bevorzugt von 2-7 mm oder 5-10 mm vorgesehen.The anchoring element 16 has a diameter d in the range of 1-3 mm. The collar has a thickness a in the range of 0.2 - 1.5 millimeters, and a circular ring width b in the range of 0.5 - 2 mm. Furthermore, the anchoring element 16 is provided with an anchoring depth t in the range of 1-15 mm or more, preferably 2-7 mm or 5-10 mm.

Das Verankerungselement kann aus Metall wie beispielsweise Stahl, Eisen, rostfreiem Stahl, Messing, Aluminium oder anderen Nichteisenmetallen gefertigt sein, wobei es gegossen oder spanabhebend hergestellt werden kann. Ebenfalls möglich ist die Verwendung von Kunststoffmaterialien (leichter!), so beispielsweise Polyethylen, Polycarbonat, Polypropylen, PVC, Polyamid etc., wobei solche Materialien auch faserverstärkt sein können. Verankerungselemente aus solchen Kunststoff Materialien können beispielsweise in einem Spritzgussverfahren hergestellt werden.The anchoring element may be made of metal such as steel, iron, stainless steel, brass, aluminum or other non-ferrous metals, wherein it may be cast or machined. Also possible is the use of plastic materials (lighter!), Such as polyethylene, polycarbonate, polypropylene, PVC, polyamide, etc., wherein such materials may also be fiber-reinforced. Anchoring elements of such plastic materials can be produced, for example, in an injection molding process.

Das Spitzenelement 15 kann einstückig mit dem Verankerungselement 16 ausgebildet sein, wobei es sich dann anbietet, das Spitzenelement 15 einem speziellen Härtungsprozess oder Beschichtungsprozess zu unterziehen.The tip element 15 may be formed integrally with the anchoring element 16, it then being appropriate to subject the tip element 15 to a special hardening process or coating process.

Das Spitzenelement 15 kann aber bevorzugtermaßen, wie in Figur 5 dargestellt, als separates Element ausgebildet sein, welches in das Verankerungselement 16 eingebaut oder anderswie mit diesem verbunden ist.However, the tip member 15 may preferably be as shown in FIG FIG. 5 shown, may be formed as a separate element which is incorporated into the anchoring element 16 or otherwise connected thereto.

Beim Spitzenelement kann es sich zum Beispiel um einen Stift aus einem bevorzugt gehärteten Material z. B. aus Metall wie gehärtetem Stahl, gesinterten Hartmetallen oder weiteren verschleißresistenten Materialien handeln. Das Spitzenelement kann auch durch entsprechende Verfahren mit einer verschleißminimierenden Oberfläche beschichtet sein (z.B. TiN, TiCN, etc.). Es ist aber auch möglich, Spitzen aus Keramik vorzusehen. Ein solches Spitzenelement 15 verfügt normalerweise über einen Durchmesser D im Bereich von 1 - 2.5 mm.For example, the tip element may be a pin of one hardened material z. As metal such as hardened steel, sintered hard metals or other wear-resistant materials. The tip element can also be coated by appropriate methods with a wear-minimizing surface (eg TiN, TiCN, etc.). But it is also possible to provide ceramic tips. Such a tip element 15 normally has a diameter D in the range of 1 to 2.5 mm.

Ein weiteres Ausführungsbeispiel eines Puffers 2 ist in Figur 6 dargestellt. Der Puffer verfügt über Halterungselemente 9, wie sie oben beschrieben sind, und er ist als Ganzes aus einem gummielastischen Material einstückig gefertigt. An seinem oberen Ende 4 verfügt er über eine Ausnehmung 10, in welche das Stockrohr (nicht dargestellt) eingeschoben werden kann. Auf der Unterseite verfügt der Puffer 2 über eine asymmetrische Abrollfläche 5, und in der elastischen Abrollfläche 5 sind sechs Halterungselemente 9 im wesentlichen in zwei Reihen angeordnet. Der leicht linsenförmigen Form der Abrollfläche, wie sie insbesondere in Figur 6h) erkannt werden kann, entsprechend, sind diese beiden Reihen nicht parallel sondern vielmehr dieser Linsenform folgend derart angeordnet, dass die am vorderen Ende 6 angeordneten Halterungselemente 9 nahe beieinander sind und sukzessive ein grösserer Abstand gebildet wird zum hinteren Ende 7 hin. In diesem Fall verfügt die Abrollfläche 5 ebenfalls über ein Profil, das Profil verfügt aber nur über Querrillen 11, welche zickzackförmig vorgesehen sind.Another embodiment of a buffer 2 is shown in FIG FIG. 6 shown. The buffer has support members 9, as described above, and it is made as a whole of a rubber-elastic material in one piece. At its upper end 4 it has a recess 10, in which the pole tube (not shown) can be inserted. On the underside, the buffer 2 has an asymmetric rolling surface 5, and in the elastic rolling surface 5, six support members 9 are arranged substantially in two rows. The slightly lenticular shape of the rolling surface, as in particular FIG. 6h ), Accordingly, these two rows are not parallel but rather following this lens shape arranged such that the arranged at the front end 6 support members 9 are close to each other and successively a greater distance is formed towards the rear end 7 out. In this case, the rolling surface 5 also has a profile, but the profile has only transverse grooves 11, which are provided in a zigzag shape.

Der Puffer gemäß Figur 6 ist insbesondere zusätzlich dadurch gekennzeichnet, dass er einerseits im Bereich der Abrollfläche 5 nicht nur über ein Profil zu Unterseite hin verfügt, sondern zusätzlich über ein seitliches Profil, gegeben als seitliche Vorsprünge 26. Diese seitlichen Vorsprünge 26, welche auch durch entsprechende Einschnitte in der Außenkontur gegeben sein können (welche dann insbesondere bevorzugt in gemeinsamer Ausrichtung mit Querrillen 11 angeordnet sind), führen dazu, dass der Puffer, wenn er zum Beispiel in weiches Bodenmaterial eindringt, besser in diesem Bodenmaterial in der Gehrichtung verankert ist. Bevorzugtermaßen werden diese seitlichen Vorsprünge 26 auf beiden Seiten symmetrisch angeordnet, und es sind, wie im vorliegenden Fall, auf jeder Seite 2 oder 3 solche Vorsprünge vorgesehen.The buffer according to FIG. 6 is in particular additionally characterized in that it not only has a profile towards the bottom on the one hand in the area of the rolling surface 5, but also via a lateral profile, given as lateral projections 26. These lateral projections 26, which also by corresponding incisions in the outer contour can be given (which are then particularly preferably arranged in common alignment with transverse grooves 11), cause the buffer, when it penetrates, for example, in soft soil material, is better anchored in this soil material in the walking direction. Preferred dimensions of these lateral projections 26 are arranged symmetrically on both sides, and there are, as in the present case, provided on each side 2 or 3 such projections.

Ein weiteres besonderes Merkmal der Ausführungsform gemäss Figur 6 besteht darin, dass im Bereich der Vorderkante, das heisst oberhalb des vorderen Endes 6, auf beiden Seiten Verjüngungen respektive längliche Aussparungen 23 vorgesehen sind. Zwischen diesen Aussparungen 23 verbleibt gewissermaßen eine Sehne 24 oder ein Steg. Diese Ausgestaltung des Puffers führt dazu, dass der Puffer dann, wenn er mit der Abrollfläche an seinem vorderen Ende auf dem Boden aufliegt (das heißt am Ende des Abrollvorganges) weicher ist, da im Bereich der Vorderkante im wesentlichen nur die schlanke elastische Sehne 24 die Kräfte aufzunehmen in der Lage ist. Diese weichere Ausgestaltung im vorderen Bereich führt dazu, dass beim Abstoßvorgang ein elastischeres und dadurch angenehmeres Verhalten erzielt wird, und dass bei auf hartem Boden auftreffenden Halterungselementen 9 weniger laute Geräusche entstehen. Ähnliche Verjüngungen zur gezielten Flexibilisierung des Puffers sind auch in anderen Bereichen möglich und gegebenenfalls sinnvoll. Die Sehne 24 kann dabei auch auswechselbar ausgestaltet sein. So können beispielsweise unterschiedliche Sehnen mit unterschiedlichem Dämpfungsverhalten (beispielsweise an den unterschiedlichen Sehnen durch unterschiedliche Farben gekennzeichnet, unterschiedliches Dämpfungsverhalten beispielsweise durch unterschiedliche Materialwahl einstellbar) je nach Bedürfnissen eingesetzt werden.Another special feature of the embodiment according to FIG. 6 consists in that in the region of the front edge, that is above the front end 6, tapers respectively elongated recesses 23 are provided on both sides. Between these recesses 23 a chord 24 or a bridge remains as it were. This configuration of the buffer means that the buffer when it rests with the rolling surface at its front end on the ground (that is, at the end of the rolling process) is softer, since in the region of the leading edge essentially only the slender elastic tendon 24 the Is able to absorb forces. This softer design in the front region means that a more elastic and therefore more pleasant behavior is achieved during the repulsion process, and that less loud noises are produced when the support elements 9 impinge on a hard floor. Similar rejuvenations for the targeted flexibilization of the buffer are also possible in other areas and may be useful. The tendon 24 can also be made interchangeable. For example, different tendons with different damping behavior (for example, at the different tendons characterized by different colors, different damping behavior, for example, by different choice of material adjustable) can be used depending on the needs.

Es ist daneben auch möglich, dies ist in den Figuren nicht dargestellt, auch nur ein einziges Halterungselement 9, wie es oben im Detail beschrieben ist, das heisst mit einem Flansch und einem eingelassenen Spitzenelement 15, in der Abrollfläche eines derartigen asymmetrischen Puffers vorzusehen. Dies insbesondere auf der zentralen Achse des Puffers in Laufrichtung. Eine solche Konstruktion ist besonders einfach, und weist trotzdem die erfindungsgemässen Vorteile auf. Ein solches Halterungselement 9 kann auch im Nachhinein in einen bestehenden Puffer eingeschossen werden.In addition, it is also possible, this is not shown in the figures, even a single support member 9, as described in detail above, that is to say provided with a flange and a recessed tip member 15, in the rolling surface of such asymmetric buffer. This particular on the central axis of the buffer in the direction of travel. Such a construction is particularly simple, and nevertheless has the advantages according to the invention. Such a support member 9 can also be injected later in an existing buffer.

Aus Figur 6e) und i) wird außerdem ersichtlich, dass es möglich ist, die Innenseite der Ausnehmung 10 speziell auszugestalten, um sicherzustellen, dass ein Puffer auch ohne unzumutbaren Aufwand wieder von einer Stockspitze abgezogen werden kann. Insbesondere bei vollständig gummielastisch ausgebildetem Puffer ist es nämlich normalerweise so, dass dieser sich im Sinne eines Saugnapfes am Stock derart festsaugt, dass er kaum noch entfernt werden kann. Dies kann beispielsweise verhindert werden, indem, wie dies in Figur 6 dargestellt ist, die zylindrische Innenfläche mit Rillen respektive Nuten versehen wird, welche in Längsrichtung des Stockes respektive der Ausnehmung verlaufen. Vorzugsweise verlaufen diese Rillen respektive Nuten über die gesamte Tiefe der Ausnehmung, sie können aber auch nur abschnittsweise ausgebildet sein. Ebenfalls ist es möglich, die ähnliche Wirkung durch Noppen oder ähnliche Vorsprünge zu gewährleisten.Out FIG. 6e ) and i) will also be appreciated that it is possible to design the inside of the recess 10 specifically to ensure that a buffer can be withdrawn from a stick tip without undue burden. In particular, in the case of a completely rubber-elastic designed buffer, it is normally the case that it absorbs itself in this way in the sense of a suction cup on the stick, that he can barely be removed. This can be prevented, for example, by, as in FIG. 6 is shown, the cylindrical inner surface is provided with grooves or grooves, which extend in the longitudinal direction of the stick or the recess. Preferably, these grooves or grooves extend over the entire depth of the recess, but they can also be formed only in sections. It is also possible to ensure the similar effect by nubs or similar projections.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11 Stockfloor 1414 Ausnehmung für 9Recess for 9 1a1a Stockrohrstock pipe 1515 Spitzenelement von 9Top element of 9 22 Puffer/DäunpfungselementBuffer / Däunpfungselement 1616 Verankerungselement von 9Anchoring element of 9 33 Bodenground 1717 Verankerungslamellenanchoring lamellae 44 oberes Ende von 2upper end of 2 1818 Flanschflange 55 Abrollfläche von 2Rolling surface of 2 1919 Ausnehmung für 15 in 9Recess for 15 in 9 66 vorderes Ende von 5front end of 5 2020 konische Spitze von 9conical tip of 9 77 hinteres Ende von 5rear end of 5 2121 Längsrichtunglongitudinal direction 88th Profil von 5Profile of 5 2222 Querrichtungtransversely 99 Halteelementretaining element 2323 seitliche Aussparungenlateral recesses 1010 Ausnehmung in 2Recess in 2 2424 Sehnetendon 1111 Querrillen in 2Cross grooves in 2 2525 vordere Aussparungenfront recesses 1212 Längsrille in 2Longitudinal groove in 2 2626 seitliche Vorsprüngelateral projections 1313 StollenoberflächeStollen surface 2727 Stockspitze von 1Stick tip of 1

Claims (21)

  1. A buffer (2) for a pole (1), in particular for a trekking pole, walking stick or Nordic walking pole, it being the case that the buffer (2), at its top end (4), has means (10) for fastening on a pole shaft (1a), in particular in the form of a recess, and, at its bottom end, has a rolling surface (5), and that the rolling surface (5) is of essentially planar or only slightly convexly curved design in a transverse direction (22), as seen in relation to the rolling movement, but in a longitudinal direction (21), perpendicularly thereto, is curved convexly such that, as the user of the pole (1) is moving, it forms a rolling surface as the pole is pushed off an underlying surface (3), characterized wherein the buffer (2) consists of an elastomeric material, at least in the region of the rolling surface (5), and in that at least one elastically mounted, hard, non-elastic retaining element (9) is arranged in the elastomeric material,
    characterized in that the retaining element (9) has an anchoring element (16) which, apart from a flange (18), is embedded in the elastomeric material, it being the case that, on its side which is directed toward the rolling surface (5), the anchoring element (16) has a recess (19) in which a tip element (15) is incorporated and fastened.
  2. The buffer (2) as claimed in claim 1, characterized in that the at least one elastically mounted retaining element (9) projects, at least in part, beyond the rolling surface (5), and in that the rolling surface (5) is preferably of asymmetrical design in that it is drawn upward at the front end (6) and the rear end essentially forms a point.
  3. The buffer (2) as claimed in claim 2,' characterized in that at least two, preferably at least four, at least six or at least eight retaining elements (9) are provided.
  4. The buffer (2) as claimed in claim 3, characterized in that the retaining elements (9) are spaced apart in the longitudinal direction (21), preferably at least two or at least three or at least four retaining elements (9) being arranged in a row in the longitudinal direction (21).
  5. The buffer (2) as claimed in claim 4, characterized in that at least four retaining elements (9) are provided, and in that the retaining elements (9) are arranged in at least two rows which are offset in the transverse direction (22).
  6. The buffer (2) as claimed in one of the preceding claims, characterized in that the rolling surface (5) has a profile (8), and in that the at least one retaining element (9) is arranged on at least one top cleat surface (13) of the profile (8), it being the case that preferably the profile (8) has at least one, preferably central longitudinal channel (12) and at least two transverse channels (11) branching off therefrom, and two rows of retaining elements (9) running in the longitudinal direction (21) are arranged on the top cleat surfaces (13) of the rolling surface (5), these cleat surfaces being formed by the channels (11, 12).
  7. The buffer (2) as claimed in one of the preceding claims, characterized in that the buffer (2) consists of a single piece of elastomeric material, in particular preferably of a possibly vulcanized natural and/or synthetic rubber, in particular preferably with a hardness of 20 to 80 Shore A, preferably of 50-70 Shore A.
  8. The buffer (2) as claimed in one of claims 1-6, characterized in that the buffer (2) comprises a hard body element, which is fastened on the pole shaft (1a), and an elastomeric sole element, which, forming the rolling surface (5), is fastened at the bottom end of the body element in particular in an exchangeable manner, preferably with the aid of one or more transverse pins.
  9. The buffer (2) as claimed in claim 7, characterized in that the at least one retaining element (9) either is fastened on the sole element or, passing through the sole element, is fastened elastically on the body element.
  10. The buffer (2) as claimed in one of the preceding claims, characterized in that the retaining element (9) is designed in the form of a pin which has its first end embedded in the elastomeric material and has its second end projecting beyond the top of the rolling surface (5), the region which projects at the second end being delimited from the rolling surface (5) by the encircling flange (18).
  11. The buffer (2) as claimed in claim 10, characterized in that the second end projects beyond the top of the rolling surface (5) by way of a height (h) in the region of 0.05 - 5 mm, in particular preferably in the region of 1-2 mm.
  12. The buffer (2) as claimed in either of claims 10 and 11, characterized in that the retaining element (9) has the hardened tip (15) at its second end.
  13. The buffer (2) as claimed in one of the preceding claims, characterized in that the anchoring element (16) consists of plastic, iron, steel, in particular stainless steel, brass, aluminum or other nonferrous metals, and in that preferably the tip element (15) consists of ceramic material, hardened metal, in particular hardened steel, sintered hard metals or other wear-resistant materials or is coated, using appropriate methods, with a wear-minimizing surface.
  14. The buffer (2) as claimed in one of the preceding claims, characterized in that, in the region which is embedded, in the elastomeric material, the anchoring element (16) has anchoring means, in particular preferably in the form of anchoring lamellae (17), preferably a plurality of encircling anchoring lamellae (17) being provided, and these are of conical design in the direction away from the rolling surface (5) and of stepped design in the direction toward the rolling surface (5).
  15. The buffer (2) as claimed in one of the preceding claims, characterized in that a single, elastically mounted, hard, non-elastic retaining element (9) is arranged in the elastomeric material, it being the case that the retaining element (9) has an anchoring element (16) which, preferably apart from a flange (18), is embedded in the elastomeric material, that, in the region which is embedded in the elastomeric material, the retaining element (9) has anchoring means, in particular preferably in the form of anchoring lamellae (17), that, on its side which is directed toward the rolling surface (5), the anchoring element (16) has a recess (19) in which a tip element (15) is incorporated and fastened, and that the retaining element (9) is arranged centrally in particular preferably in the transverse direction (22).
  16. The buffer (22) as claimed in one of the preceding claims, characterized in that, on its front edge, the buffer (2) has a crosspiece (24) formed by two laterally provided recesses (23), this crosspiece (24) extending preferably over at least 10%, in particular preferably over in the region of 20-40%, of the overall length of the front edge.
  17. The buffer (2) as claimed in one of the preceding claims, characterized in that the rolling surface (5) is of asymmetrical design in that it is drawn upward at the front end (6) and the rear end (7) essentially forms a point, and in that lateral protrusions (26), which project laterally beyond the outer contour of the buffer (2), are provided in addition, preferably at least two, in particular preferably at least three, such lateral protrusions (26) being provided on each side of the buffer (2).
  18. The buffer (2) as claimed in one of the preceding claims, characterized in that the recess (10), for accommodating the tip of the pole, has a profiling and/or a coating on the inner surface, and this makes it easier for the buffer to be removed from the pole, while nevertheless being secured to a sufficient extent for use, the profiling preferably being in the form of channels and/or grooves running longitudinally in the direction of the pole.
  19. A trekking pole, walking stick or Nordic walking pole having a buffer (2) as claimed in one of the preceding claims.
  20. A method of producing a buffer as claimed in one of claims 1-18, characterized in that the at least one retaining element (9) is driven into the rolling surface (5), essentially perpendicularly to the rolling surface (5), at the appropriate locations, appropriate blind holes (14) possibly having been formed beforehand by drilling or even during the process for producing the preform.
  21. A method of producing a buffer as claimed in one of claims 1-18, characterized in that the at least one retaining element (9) is pushed into the rolling surface (5), essentially perpendicularly to the rolling surface (5), at the appropriate locations, in the process being pushed into, and adhesively bonded in, blind holes (14) which are correspondingly formed by drilling or even during the process for producing the preform.
EP06721967A 2005-06-03 2006-05-22 Buffer for trekking or nordic-walking poles Active EP1885212B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11160947.5A EP2338375B1 (en) 2005-06-03 2006-05-22 Buffer for trekking or Nordic walking stick

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH9422005 2005-06-03
PCT/CH2006/000268 WO2006128312A1 (en) 2005-06-03 2006-05-22 Buffer for trekking or nordic-walking poles

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP11160947.5A Division EP2338375B1 (en) 2005-06-03 2006-05-22 Buffer for trekking or Nordic walking stick
EP11160947.5 Division-Into 2011-04-04

Publications (2)

Publication Number Publication Date
EP1885212A1 EP1885212A1 (en) 2008-02-13
EP1885212B1 true EP1885212B1 (en) 2011-05-11

Family

ID=35786362

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06721967A Active EP1885212B1 (en) 2005-06-03 2006-05-22 Buffer for trekking or nordic-walking poles
EP11160947.5A Active EP2338375B1 (en) 2005-06-03 2006-05-22 Buffer for trekking or Nordic walking stick

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11160947.5A Active EP2338375B1 (en) 2005-06-03 2006-05-22 Buffer for trekking or Nordic walking stick

Country Status (10)

Country Link
US (1) US7802581B2 (en)
EP (2) EP1885212B1 (en)
JP (1) JP4981793B2 (en)
CN (1) CN101184409B (en)
AT (1) ATE508655T1 (en)
CA (1) CA2608654C (en)
DE (1) DE202006017594U1 (en)
HK (1) HK1117355A1 (en)
NO (1) NO339315B1 (en)
WO (1) WO2006128312A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008080248A1 (en) * 2006-12-29 2008-07-10 Hans Hiltbrunner Tip for a sports pole, and sports pole comprising such a tip
JP4524766B1 (en) * 2009-01-15 2010-08-18 株式会社セラピット Walking cane
CH702967A1 (en) 2010-04-14 2011-10-14 Lekisport Ag Nordic Walking Stick with buffer.
CN102266259A (en) * 2010-06-03 2011-12-07 黄旖静 Safe sucker crutch for blind and deaf disabled person
DE102011005568A1 (en) 2011-03-15 2012-09-20 Krones Aktiengesellschaft Plant and process for recycling plastics, preferably PET
US8636306B2 (en) * 2011-04-25 2014-01-28 Stephen L. McBride Skate board paddle
WO2018007135A1 (en) 2016-07-08 2018-01-11 Lekisport Ag Nordic walking pole having a buffer
CN107616589A (en) * 2017-09-27 2018-01-23 宁海县木马人户外用品有限公司 A kind of alpin-stock
CN108315894A (en) * 2018-04-08 2018-07-24 苏州胜璟电磁科技有限公司 A kind of balancing point electromagnet
WO2023134931A1 (en) 2022-01-13 2023-07-20 Lekisport Ag Buffer, and stick having such a buffer
USD1002176S1 (en) 2022-01-19 2023-10-24 John Harrison Tip for a walking cane

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US7360547B2 (en) * 2004-10-19 2008-04-22 Carlson Ann M Walking assist device and associated methods

Also Published As

Publication number Publication date
US20080196753A1 (en) 2008-08-21
HK1117355A1 (en) 2009-01-16
EP1885212A1 (en) 2008-02-13
CA2608654C (en) 2014-12-02
CA2608654A1 (en) 2006-12-07
WO2006128312A1 (en) 2006-12-07
NO339315B1 (en) 2016-11-28
NO20075710L (en) 2008-02-19
JP2008545482A (en) 2008-12-18
US7802581B2 (en) 2010-09-28
ATE508655T1 (en) 2011-05-15
EP2338375A1 (en) 2011-06-29
CN101184409A (en) 2008-05-21
EP2338375B1 (en) 2018-12-19
JP4981793B2 (en) 2012-07-25
DE202006017594U1 (en) 2007-02-22
CN101184409B (en) 2010-12-01

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