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

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

TECHNICAL AREA

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.

STATE OF THE ART

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.

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.

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.

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.

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.

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.

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.

PRESENTATION OF THE INVENTION

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.).

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.

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. 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.

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.

Furthermore, the present invention relates to a trekking or Nordic Walking pole with a buffer, as described above.

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.

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.

Further preferred embodiments of the invention are described in the dependent claims.

BRIEF EXPLANATION OF THE FIGURES

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.

WAYS FOR CARRYING OUT THE INVENTION

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

LIST OF REFERENCE NUMBERS

1 floor 14 Recess for 9 1a stock pipe 15 Top element of 9 2 Buffer / Däunpfungselement 16 Anchoring element of 9 3 ground 17 anchoring lamellae 4 upper end of 2 18 flange 5 Rolling surface of 2 19 Recess for 15 in 9 6 front end of 5 20 conical tip of 9 7 rear end of 5 21 longitudinal direction 8th Profile of 5 22 transversely 9 retaining element 23 lateral recesses 10 Recess in 2 24 tendon 11 Cross grooves in 2 25 front recesses 12 Longitudinal groove in 2 26 lateral projections 13 Stollen surface 27 Stick 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.

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