EP2896438A1 - Pole basket change system - Google Patents

Abstract

Described is a releasably attachable to a free lower end of a pole tube (1) removable element (2), in particular for a trekking pole, cross-country pole, Nordic walking pole, or ski pole, with a tip element (5), which at its lower end a tip , Has a rolling surface or in the lower end of a tip (9) is recessed, and which has an axial upwardly open blind hole (13) for receiving the free lower end of the pole tube (1). The tip element is characterized in that the tip element (5) has at least one axial slot (6) in its upper edge (25), and a circumferential annular collar (3) at least partially surrounding the tip element (5), which sleeve (3 ) in the region of the upper edge (25) on the tip element (5) can be detachably fastened such that at least one projection on the pole tube (1) and / or a transverse pin (4) in at least one hole (8) of the pole (1) is mounted transversely to the pole axis (24) in which at least one axial slot (6) of the tip member (5) through the sleeve (3) is trapped and the tip member (2) is thereby secured to the free end of the pole tube (1).

Description

TECHNICAL AREA

The present invention relates to a plate changing system for cross-country poles, hiking poles, Nordic walking poles, ski poles, etc. This is a system to understand in which different tips, so not only plates in the popular sense, but also other endpieces, in mechanically stable and lightweight replaceable manner can be attached to the pole.

STATE OF THE ART

Trekking poles, cross-country poles, Nordic walking poles, or ski poles have at their upper free end of a handle and at its lower free end on a tip or a rolling surface (usually a rubber buffer). There are also systems, especially in the field of Nordic walking, where between a tip and a rolling surface can be easily changed. The tip elements can additionally have a plate-like widened area, for example, to prevent too deep sinking in soft ground such as snow.

Such tip elements must be attached as well as possible to the lower free end so that they do not come loose during use. Typically, the lower free end is a conical free end, i. the stick diameter tapers towards the lower free end. Accordingly, this area, although very heavily loaded, because of the small diameter is not very stable and resistant to wear. The tip element is therefore usually formed as a separate body having a blind hole from above, in which the free end of the pole tube is self-locking pressed and / or glued.

The advantage of such fasteners is the usually good connection between tip element and pole, but the disadvantage is that it is not readily possible to replace tip elements, either because they need to be repaired or because a fundamentally different tip element to be placed.

PRESENTATION OF THE INVENTION

It is accordingly an object of the present invention, an improved Tip element in the form of an interchangeable element for the above applications, ie in particular for a trekking pole, cross country pole, Nordic walking pole, or ski pole to provide. In particular, the interchangeable element should be releasably fastened to a free lower end of a pole tube. The interchangeable element has at its lower end a tip, or a rolling surface or in its lower end is a tip, for example made of metal or ceramic, embedded. In addition, it has an axial upwardly open blind hole for receiving the free lower end of the pole tube.

This object is solved by the features of claim 1.

In particular, the interchangeable element according to the present invention is characterized in that it comprises a tip member and a collar, wherein the tip member has at least one axial slot in its upper edge, and a circumferential, annular, the tip member at least partially embracing sleeve. This collar can be releasably secured to the tip member in the region of the top edge thereof. This is such that at least one projection on the pole or a transverse pin, which is mounted for example in at least one hole of the pole tube transversely to the pole axis, is trapped in the at least one axial slot of the tip member through the sleeve. Thus, the change element is thereby attached to the free end of the pole tube. Trapped means that the cuff for the cross pin or the projection provides an upper stop surface available, so that, because the cuff and floor element are connected to each other, an attachment to the pole results. Basically, the hole required in the wall of the pipe for fixing when using a transverse pin, normally even two opposite holes are provided, leads to a weakening of the pipe in this area. On the other hand, the use of such holes and a cross pin leads to an excellent attachment through an optimal and backlash-free positive locking. By using these slots, however, this weakening of the tube can now be intercepted in this area, indeed the weakening does not affect the overall stability. Characterized in that the tip element extends upward beyond the region of these holes, because the transverse pin is in the slots, and there above the transverse pin additionally through the sleeve can optionally be provided so that it ensures that cuff and / or tip element be clamped radially to the pole, resulting in a situation that, so to speak Tip element with the cuff as a stabilizing rail for the pole in the covered area, and thus in the area where the holes are arranged, is used. The proposed solution is thus mechanically very stable, even with intensive use does not cause the tip can be loose, but the tip can still be replaced without problems, also the construction is not prone to contamination because they are very well designed closed leaves.

According to a first preferred embodiment, two slits lying opposite each other with respect to the pole axis are arranged, which preferably have the same axial depth. Thus, the load is transmitted symmetrically as possible from the tip element on the pole tube, respectively, vice versa.

A further preferred embodiment is characterized in that at the upper edge of the tip element in the region of the slots and on the sleeve corresponding elements for releasable form-fitting and / or non-positive connection between the tip element and the collar are provided. These may be corresponding threaded elements, corresponding snap elements, corresponding rotary snap elements, or combinations thereof. It is important that the appropriate mechanism is just solvable.

The corresponding elements are preferably an external thread provided on the tip element in the region of the upper edge and an internal thread provided in the inner wall of the sleeve.

In this case, the external thread may have an axial length which is smaller than the axial length of the slots and is then preferably arranged on the upper edge side of a lower end of the slots.

Alternatively, the male thread may have an axial length substantially equal to the axial length of the slots and extending from the upper edge of the tip member or slightly below it to substantially the lower end or slightly above it.

By using such threads, a very simple mounting option can be provided, which is also less susceptible to dirt and can be easily manufactured, for example, when the individual components are molded from plastic. Furthermore, there is the advantage that it is possible to realize not only an attachment but in addition also a radial clamping, for example by one or both of the threads designed slightly conical become. Alternatively, one or both threads may also have a tapered extension which is smaller in diameter than the core diameter of the thread. Thus, it can be effected that not only the transverse pin is fixed in the axial direction by the sleeve, but in addition the later also clamps in the region of the upper edge of the tip element on the outer wall of the pole tube and thereby stabilizes this upper area, respectively, respectively ensures indeed, the above-mentioned effect of a stabilizing member above the two holes in the wall can actually be realized.

In principle, simply the lower edge of the sleeve can be used as a stop for the cross pin. A disadvantage of such a very simple solution may be that thereby the cross pin is exposed and the construction is somewhat prone to contamination. However, a particularly preferred embodiment is further characterized in that the sleeve has at its lower, the tip-facing peripheral edge a preferably circumferential, directed to the tip or rolling surface thread-free apron, which has a larger inner diameter than the internal thread, so that at the lower end of the Internal thread a stop paragraph for the cross pin is provided. In this case, preferably, the outer diameter of the sleeve in the region of the skirt is the same as in the adjoining region of the internal thread. The cuff may, if it is not made of metal, also have an inserted disc, for example made of metal, in order to avoid damage from the adjacent transverse pin. Between sleeve and tip element so a ring, preferably a metal ring can be provided, which represents the stop surface for the transverse pin in the mounted state. So then indirectly with the cuff in contact.

This ring can be provided as a separate element or attached to the cuff or embedded in this.

The cuff may, in particular to avoid contamination problems, at the top edge or the rolling surface facing away from the upper edge have an inwardly directed circumferential flange whose inner diameter substantially corresponds to the outer diameter of the pole tube in this area. The inner diameter of the flange must, however, still be large enough that, despite the conically tapering and increasing tube diameter, unscrewing of the nut remains possible at the top. It is also possible, on the flange directed to the tube elastic Sealant, such as a soft lip to provide, on the one hand to ensure sealing function and on the other hand solubility. It is also possible to seal an elastomeric ring or an elastomeric sleeve (analogous to provide eg with choke nipples), possibly as a separate element, between the sleeve and threaded neck of the tip member. This prevents dirt or water from entering the structure from above.

Such a change element may further be characterized in that the tip element and / or the collar is made of a material selected from the following group: metal, preferably stainless steel or aluminum; Plastic; preferably selected from the group of polyethylene, polypropylene, polycarbonate, polyamide, POM, wherein the plastic may be glass fiber reinforced, or combinations of these materials.

Preferably, the tip element made of plastic and the sleeve also made of plastic, preferably of the same plastic as the tip member. In the case of a plastic tip element, however, the sleeve can also be made of metal, preferably of aluminum, preferably with an anodized surface or a superficial coating.

An interchangeable element is generally to be understood as meaning elements which form the lower end of a stick for the uses indicated above. It can therefore be an element with an effective tip, but it can also be an element with a soft rolling surface, for example, an element with a rubber buffer. The tip element can thus have no plate, it can have an asymmetrical, for example, for cross-country particularly suitable plate, it may have a symmetrical substantially circular plate, as it is typically used for skiing, but it can also be an alternating tip act, in which between a position with a tip and a position at which a buffer forms the rolling surface is formed, can be switched, as known for example from the field of Nordic walking. If it is a tip with a plate, it is preferably detachably changeable, so for example via a snap connection, a Drehschnappverbindung or a thread attached to the tip element.

As a tip, at the lower end in the tip element a carbide or ceramic tip may be embedded, optionally using a metal

Fastener insert.

The at least one slot, preferably both slots, preferably have an axial depth of at least 3 mm, preferably at least 4 mm measured from the top edge of the tip member, preferably the slots have a depth in the range of 3-15 mm, more preferably in the range of 4-10 mm and wherein the slots are further preferably opposite and have the same axial depth.

Furthermore, the present invention relates to a stick, in particular trekking pole, cross-country pole, Nordic walking pole, or ski pole, with a pole with preferably a handle at a first upper free end and a removable element as described above at the second free lower end. Such a pole is preferably characterized in that at the free lower end of the pole tube, offset from the lower edge upwards, two opposite arranged at the same axial height holes are arranged in these holes a cross pin is formed and arranged so that it on both sides of the Outside diameter of the tube protrudes at this point, preferably on both sides by 0.5-5 mm, in particular preferably on both sides 0.5-3 mm protrudes, and that the transverse pin engages in the two opposite slots and trapped in these upper side at least indirectly by the cuff attached to the tip member is.

The cross pin can be a metal pin, such as a solid pin, a hollow cylindrical pin or a slotted hollow cylindrical pin. The pole can be formed conically at its free lower end and clamped with a fixed tip element in the tapered blind hole on the side walls and / or arranged on the bottom of the blind hole to stop. In particular, the construction can be designed so that the transverse pin does not reach the lower end of the slots in the fastened state, namely the attachment of the pole tube on the tip element on the stopper from the cross pin on the sleeve and the stop respectively terminal closure of the free end of the tube in the blind hole , Alternatively, it is possible that the cross pin is positioned to the lower end of the slot and thus the lower stop is thereby given. May be disadvantageous in this interpretation may be that the two stops are axially very close to each other and a slight tilting of the change element relative to the stick can not be excluded, which can be problematic because thereby in use successive wear or weakening can result.

Furthermore, the present invention also relates to a further end element in addition to the above-mentioned change element. This end element can be designed as a removable element, as for example in the embodiment in Fig. 4 is shown. However, such an end element can also be attached to the free end of the pole tube in a conventional manner. It is therefore expressly an invention that is both independent of the above-mentioned construction as a removable element with cuff and tip element possible and in combination with such a change construction.

Specifically, it is an attachable to a free lower end of a pole end element, but preferably not necessarily designed as a removable element as shown above, especially for a trekking pole, cross country pole, Nordic walking pole, or ski pole, with a tip element which at its lower End has a tip, a rolling surface or in the lower end of a tip is inserted, and which has an axial upwardly open blind hole for receiving the free lower end of the pole tube. The end member is characterized in that the end member has a lower tip member at the lower end of which a tip or rolling surface is disposed or in the lower end of which a tip is inserted, and an upper tip member in which the lower end of the pole tube passes over the blind hole in which the upper tip element is mounted sprung relative to the lower tip element, in particular in that the lower tip element has an upwardly open recess in which a guide region of the upper tip element is slidably supported, and furthermore preferably a spring element on the bottom of the recess; is preferably arranged in the form of an elastomeric block, on the surface of which directly or indirectly rests a bottom of the upper tip member.

Such a construction is preferably characterized in that the upper tip element and the lower tip element are limited relative to each other in their axial displaceability. This preferably by a pin 28 which is in the region of the bottom of the upper tip member in this stored in a hole, and protrudes on both sides over this. On these two sides, the pin engages in each case a slot in the wall of the lower tip element. Also a reverse construction is possible, that is a construction with a slot in the upper tip element and a circular hole in the lower tip element. Also, a reversed construction is possible in which the upper tip member has a downwardly open recess for the lower tip member. In this case, then the lower tip element is usually very slim, because then for a short overall construction in the axial direction of the sprung area must engage in the opening of the tube 1.

Further, it is conceivable that the upper tip member has at its diameter portion, which guide for the resilient mounting, preferably a circumferentially formed diameter enlargement, which serves as a mechanical stop to avoid overloading of the slot by the transverse pin. The mechanical stop is achieved by the lower tip element meeting the diameter increase before it has reached the end of the slot. Alternatively, a mechanical stop limitation can also be achieved in that the lower spring element has a stepped blind hole and the length of the upper spring element is such that it meets the level of the blind hole before the transverse pin reaches the end position of the slot.

In addition, the present invention relates to a method of mounting a stick as set forth above using a change element as described above. This method is preferably characterized in that over the free, preferably tapered lower end of the pole tube in a first step, the sleeve over the pole tube and further than the holes in the pole pipe is pushed out. Then, in a second step, the transverse pin is laterally inserted into the two holes in the pole tube, so that the transverse pin protrudes on both sides substantially equally over the outer wall of the pole tube. In this case, the cross pin may be formed as a clamping pin to prevent it from slipping out during the assembly process or during a change operation. However, this is necessary especially when the above-mentioned skirt is provided on the cuff, not. In a third step, the tip element is pushed with the blind hole on the free end of the pole tube, wherein the protruding free ends of the cross pin engage in the slots. In a last step, the cuff is moved back to the free end of the pole tube and attached to the tip element. Then, for example, the cuff is screwed until the cuff is in abutment with the cross pin and so the construction is fixed on the tapered lower end.

Analogous is a replacement of a change element, preferably different interchangeable tip elements are designed so that they each have the same cuff, namely, namely simply the above steps 4 and 3 can be unwound backwards and another tip element to be pushed and screwed. This shows another significant advantage of the proposed construction: the cuff is always caught during the change process and can not be lost. In particular, when, for example, on a ski tour or in a cross-country skiing the tips must be replaced quickly can be prevented so that construction-essential parts are lost in the snow.

Further embodiments are given in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

verschiedene Ansichten eines Wechselsystems mit einer aufgesetzten Spitze, wobei in a) eine Sicht von unten, in b) eine Sicht von oben, in c) eine Sicht, in Laufrichtung, von der Seite, in d) eine Sicht, in Laufrichtung, von hinten, in e) eine perspektivische Ansicht und in f) und g) die Schnitte gemäss A-A respektive B-B in c) respektive d) angegeben sind;

Fig. 2

eine Explosionsdarstellung des Systems mit verschiedenen möglichen unterschiedlichen Aufsätzen;

Fig. 3

einen Telleraufsatz in verschiedenen Ansichten, namentlich in a) von der Seite, in b) in einem axialen Schnitt gemäss C-C in a) und in c) in einer perspektivischen Ansicht; und

Fig. 4

verschiedene Ansichten eines weiteren diesmal gefederten Systems mit einer aufgesetzten Spitze, wobei in a) eine Sicht, in Laufrichtung, von der Seite, in b) eine Sicht, in Laufrichtung, von vorn, in c) und d) die Schnitte gemäss A-A respektive B-B in a) respektive b), in e) eine perspektivische Ansicht, in f) den Ausschnitt X aus c), und in g) eine Explosionsdarstellung des Systems.

Preferred embodiments of the invention will be described below with reference to the drawings, which are given by way of illustration only and are not to be interpreted as limiting. In the drawings show:

Fig. 1

different views of a changing system with an attached tip, where in a) a view from below, in b) a view from above, in c) a view, in the direction of, from the side, in d) a view, in the running direction, from behind in e) a perspective view and in f) and g) the sections according to AA or BB in c) or d) are given;

Fig. 2

an exploded view of the system with different possible different essays;

Fig. 3

a plate attachment in different views, namely in a) from the side, in b) in an axial section according to CC in a) and in c) in a perspective view; and

Fig. 4

different views of another this time sprung system with an attached tip, where in a) a view, in the direction of the side, in b) a view, in the direction of, from the front, in c) and d) the sections according to AA and BB in a) respectively b), in e) a perspective view, in f) the detail X from c), and in g) an exploded view of the system.

DESCRIPTION OF PREFERRED EMBODIMENTS

FIG. 1 shows a removable essay 2 in different views. The attachment essentially comprises the tip element 5 and the sleeve 3.

The tip element 5 is made of plastic in one piece and has on the underside a press-fitted into a recess and / or glued metal or ceramic tip 9. This tip 9 is formed asymmetrically in order to be optimally used in the direction can.

On the axially opposite upper side, the tip element 5 has a recess in the form of an axial blind hole 13. In this blind hole 13, the pole tube 1 is inserted.

The stick tube 1, of which only the lowest end is shown in the figures (at the upper end you have to imagine a handle), can either be designed as a single tube, but it can also be an adjustable tube, in which different sliding pipe segments relative to each other depending on the purpose of use can be moved adjustable in length, such as in the EP 1 450 906 disclosed. In the lowest area of this pole tube 2 is formed tapered, in particular with reference to FIG. 1f ) and g) can be recognized. For example, it is an aluminum tube and the conification at the bottom results in a slight increase in wall thickness towards the free end.

The tip element 5 has in the region of the upper edge 25 has two axially opposite deep slots 6 with an axial length of about 5-8 mm. The slots 6 are arranged on both sides of the pole axis 24 and both have the same axial depth, and they extend to a lower rounded end 21. In this upper edge region, the tip member 5 also has an external thread 7, the external thread 7 does not extend all the way to the lower end 21 of the slots 6. According to the conical configuration of the free end of the stick 1 and the shape of the blind hole 13 is tapered. In the attachment shown here so that the pole tube 1 is pressed so far in this conical region 13 until the outer wall of the tube in non-positive and positive engagement with the lateral inner wall of the recess 13 passes. In this embodiment, the lower edge 23 of the pole tube 1 does not come to a stop with the bottom 22 of the blind hole 13. However, this need not be so, the pole tube 13 can also dive deeper into the blind hole 13 until it stops on the floor 22nd

In addition, this interchangeable attachment 2 now comprises a collar 3. This collar is annular in circumference and has on its inside an internal thread 10, which is designed according to the external thread 7 of the tip element. In the upper edge region, the sleeve 3 has an upper end region 11 in the form of a radially inwardly directed flange. This is designed so that in the attached state of this area 11 comes to rest near the outer wall of the pole tube 1. This will prevent dirt and / or water from entering the structure from above.

On the somewhat axially opposite lower side of the sleeve 3 also has a circumferential extension, but this does not extend radially, but axially and takes the shape of a circumferential skirt 12 at. This skirt 12 has a larger inner diameter than the internal thread portion 10, correspondingly forms between the threaded portion and the skirt 12, an axial shoulder 26. This paragraph 26 forms, as in particular with reference to FIG. 1 f) can be recognized, in the attached state, a stop for a transverse pin 4, which is inserted transversely to the pole axis 24 in two opposite holes 8 in the pole tube and protrudes laterally beyond the outer wall of the pole tube.

As a result, the replaceable attachment 2 is held by, on the one hand, the free end of the pole tube is clamped in the blind hole 13 or arranged on abutment on the bottom of the blind hole, and on the other hand secured against removal of the tip member 5 by the screwed-on top cuff 3, the stop 26 for the cross pin 4 provides.

It is important that above the basically the pole tube debilitating hole 8, the threaded portion of the tip member the pole over a certain axial length of typically at least 3 mm or at least 5 mm encompasses and optionally also radially clamps easily, so that in principle through the holes. 8 weakened area of the pole by this tip construction is up to some extent splinted and no weakening of the overall construction due to the holes results.

Such a stick tip can be composed by providing the butted cane 1 in a first step with the two holes 8, for example by drilling in a single drilling operation perpendicular to the axis 24 through the tube 1 at the desired axial position, and then Cuff 6 in the right one Orientation is pushed over the pipe. Then the cross pin 4 is pushed through the holes and arranged as symmetrical as possible. Subsequently, the tip member 5 is placed by the tip of the tube 1 is inserted into the opening of the blind hole 13 until it stops on the bottom 22 or up to the side walls, a stop / a clamping takes place. In this case, the transverse pin 4 and its projecting beyond the wall of the tube ends is guided through the slots 6, so that the tip element is secured against rotation. In a last step, the sleeve 6 is guided from above onto the thread 10 and screwed on until the skirt 12 comes to rest over the ends of the transverse pin and the stop 26 comes to rest on the pin 4.

In FIG. 2 different tip elements 2 are shown, which can be used in the context of such a construction. So are adjustable tips, which can be chosen between a flexible Abrollbereich and an effective tip, as shown on the left, possible, so constructions, as for example from the WO2005120281 or the EP 2066195 or the WO 2011128231 are known. Also possible are plate constructions with a basket 14 ', which subsequently in connection with FIG. 3 to be shown in more detail. As shown at the far right, it is also possible to put on cross-country tips, which have an asymmetric plate 14, which is formed fixedly and integrally with the pointed element.

In each of these cases, the same cuff is used in each case, which means that only the tip element 5 has to be exchanged and, as mentioned above, there is no risk of the cuff 3 being lost during the replacement process.

In the construction of a suitable plate is in FIG. 3 shown in different illustrations. The plate 14 'is also detachably arranged so that, for example, different plate sizes can be placed or defective plates can be easily replaced without replacing the whole tip element. For this purpose, the tip member 5 has a plate attachment external thread 15, as in FIG. 2 visible, and the plate in the central opening via a plate inner thread 16. It may be a thread or just around parallel ribs or fins, so that a latching snap connection is formed. The plate element has on the one hand a basket area 18 and, in particular for stabilization and for secure attachment to the tip element 5, via a sleeve portion 19 with greater axial length. In this case, how is this particular FIG. 3b it can be seen, also the tip element as a hollow cylinder formed, ie with a through hole, but the diameter is variable along the axis. The tip is formed as a hard metal tip, which is embedded in a fastening insert 17 in the lower opening. During assembly, either the entire plate attachment as in FIG. 3 can be used, or it is initially only the tip member 5 is placed and bolted to the cuff 3 on the floor, and then the variable plate 14 'pushed from below and brought up to the stop 20 while screwed or snapped.

An embodiment that can be designed as a change system in the sense described above, ie with tip element 5 and associated cuff 3 is in Fig. 4 shown. This in Fig. 4 illustrated embodiment can also be configured without the above-described fastening mechanism with the sleeve 3, ie the pole tube 1 can also be simply pressed or glued into the described below in more detail upper portion 5 'without change mechanism.

The tip according to Fig. 4 has a tip member formed of an upper tip member 5 'and a lower tip member 5 ", both of which are sprung relative to each other The purpose of the construction is to provide impact resilience for use. to which the pole tube 1 is fixed relative to the lower tip member 5 ", on which the tip 9 is formed or fixed, is slidably mounted, with a spring element 29, here in the form of a cylindrical elastomeric block 29 (but it is also a Spiral spring possible).

Concretely, the lower tip member 5 "has an upwardly open cylindrical axial recess 31 having an inner diameter substantially equal to or slightly larger than the outer diameter of a guide portion 33 of the upper tip member 5 ' 33 is cylindrical and is thus slidably mounted in the recess 31. A spring element 29 is arranged on the lower bottom of the recess 31. The cylindrical region 33 of the upper tip element 5 'is bounded below by a usually closed bottom 34 the upper tip element 5 'rests on the elastomer block 29, and this elastomer block 29 in turn rests on the bottom of the recess 31, whereby the two elements 5' and 5 "are sprung relative to one another. So that the elastomer block 29 can actually take over this suspension function, it typically has one Outer diameter which is sufficiently smaller than the inner diameter of the recess 31st

The spring travel must be limited in the axial direction along the axis 24. For this purpose, a Federquerstiftloch 32 is formed in the bottom portion 34 of the upper tip member 5 'transverse to the axis 24. On the other side, in each case a slot 30 is formed in the lower tip element 5 "in the two opposite walls 30. During assembly, this can be best described with reference to FIG Fig. 4g comprehend the elements joined together by first the elastomeric block 29 is inserted into the recess 31, then the upper tip element 5 'is inserted into the recess 31 with the guide portion 33 until the Federquerstiftloch 32 and the slot 30 are in line. Subsequently, the spring cross pin 28, typically a metal pin is inserted. Thus, the axial travel of the upper tip element 5 'is limited by the length of the oblong hole 30 and the two elements 5' and 5 "are captively connected to one another.

Incidentally, also, and this may be quite advantageous in terms of avoiding pollution, even a somewhat reversed arrangement possible, i. it is possible to provide in the wall of the lower tip member 5 "a substantially circular hole, while in the bottom 34 of the upper tip member 5 'a corresponding slot is provided.

The upper tip element 5 'is now analogous to those in the Figures 1-3 illustrated embodiments designed as a removable element. Specifically, an external thread 7 is formed at the upper end of the upper tip element 5 ', which has two opposite axial slots 6. The upper tip element 5 'has an axial, in this case conically converging blind hole 13 into which the tapered end of the tube 1 is inserted. In the tube 1, two opposite holes 8 are formed, through which the transverse pin 4 can be performed. This cross pin 4 comes to lie in the inserted state in the slots 6. Further above the tube 1 is a sleeve 3 with an external thread 7 adapted internal thread 10 is present. In a slight modification to the cuffs described above, a metal ring 27 is additionally inserted in this case, which, in particular with reference to Fig. 4f ) can be detected, in the mounted state then provides the abutment surface 26 for the cross pin 4 and is caught by the skirt 12 of the sleeve 3. Through this metal ring 27 can be prevented that the sleeve 3, which can then be made of plastic, for example, is worn by the load of the stop shoulder 26 by the transverse pin 4. In this case, the metal ring 27 is formed as a separate component, as it were as a washer or ring. However, it is also possible to provide this metal ring injected at the lower end of the internal thread 10 in the sleeve 3, ie this reinforcement can to a certain extent be installed in an in-mold process in the sleeve 3.

This additional metal ring 27 can also be used in the context of Figures 1-3 illustrated embodiments apply.

When assembling such a construction, the procedure is such that initially, as already described above, the spring mechanism is constructed by presenting the lower tip element 5 "and inserting a spring element 29 into the recess 31. Thereafter, the upper tip element 5 'is inserted into the recess 31 is inserted with the cylindrical portion 33 until the holes 30 and 32 are brought to coincidence, then the spring cross pin 28 is pushed in. Thus, the entire spring-loaded tip element 5 is ready.This tip element can now be attached to a pole tube 1 by the lower free end of the pole tube 1, in which two opposing holes 8 are already provided in the blind hole 13 in the upper tip member 5 'is inserted after previously the cuff 3 and then the metal ring 27 were threaded onto the pipe .. The stored in the holes 8 Cross pin 4 is inserted into the axial slots 6 and then werd en metal ring 27 and sleeve 3 pushed from above and the internal thread 10 is increased to the external thread 7. As a result, the ends of the transverse pin 4 projecting beyond the tube on both sides are trapped upwards indirectly over the metal ring 27 by the sleeve 3.

LIST OF REFERENCE NUMBERS

1 stock pipe 21 lower end of 6 2 changeable attachment 22 Bottom of 13 2 ' Plate-free top 23 lower end of 1, lower edge 2 ' Asymmetric cross-country ski tip 24 pole axis 2 '' Alpine peak with change plate 25 Top edge of 5 2 "" Nordic-Walking Vario-Wechselspitze 26 Stop shoulder for 4 27 Slice in 3 3 cuff 28 Spring cross pin 4 cross pin 29 Spring element, elastomer block 5 tip member 5 ' upper tip element 30 Slot in 5 "for 28 5 ' lower tip element 31 Recess in 5 "for 5 ' 6 Slot in 5 32 Spring cross pin hole 7 external thread 33 Guidance range of 5 ' 8th Hole in walls of 1 34 Bottom of 5 ' 9 Metal or ceramic tip 10 inner thread 11 upper end of 3 12 apron 13 blind 14 plate area 14 ' variable plate 15 Plate mounting external thread 16 Teller internal thread 17 Fastening insert for 9 18 Basket area of 14 ' 19 Cuff area of 14 ' 20 stop flange

Claims (15)

Releasably attachable to a free lower end of a pole tube (1) removable element (2), in particular for a trekking pole, cross-country pole, Nordic walking pole, or ski pole, with a tip element (5) which has at its lower end a tip, a rolling surface or in the lower end of a tip (9) is recessed, and which has an axial upwardly open blind hole (13) for receiving the free lower end of the pole tube (1),
characterized in that
the tip element (5) has at least one axial slot (6) in its upper edge (25), and a circumferential, annular collar (3) at least partially surrounding the tip element (5), which sleeve (3) in the region of the upper edge (25 ) can be detachably fastened to the tip element (5) such that at least one projection on the pole tube (1) and / or a transverse pin (4) is mounted transversely to the pole axis (24) in at least one hole (8) of the pole tube (1) is, is trapped in the at least one axial slot (6) of the tip member (5) through the sleeve (3) and the change element (2) thereby at the free end of the pole tube (1) is fixed. Interchangeable element (2) according to claim 1, characterized in that two with respect to the pole axis (24) opposite slots (6) are arranged, which preferably have the same axial depth. Interchangeable element (2) according to claim 1 or 2, characterized in that on the upper edge (25) of the tip element (5) in the region of the slots (6) and on the sleeve (3) corresponding elements (7, 10) for releasably positive and / or non-positive connection between the tip element (5) and sleeve (3) are provided, which are preferably corresponding threaded elements, corresponding snap elements, corresponding rotary snap elements, or combinations thereof. Interchangeable element (2) according to claim 3, characterized in that the corresponding elements are an external thread (7) provided on the tip element (5) in the region of the upper edge (25) and an internal thread provided in the inner wall of the collar (3) (10), wherein preferably either the external thread (7) has an axial length which is less than the axial length of the slots (6) and then upper edge side of a lower end (21) of the slots (6) is arranged, or the external thread (7) has an axial length substantially equal to the axial length of the slots (6) and extending from the upper edge (25) of the tip member (5) or slightly below it to substantially the lower end (21) or slightly above it extends. Interchangeable element (2) according to claim 4, characterized in that the sleeve (3) at its lower, the tip (9) facing the peripheral edge a preferably circumferential, the tip (9) respectively rolling directed thread-free skirt (12), which has a larger inner diameter has as the internal thread (10), so that at the lower end of the internal thread (10) a stop shoulder (26) for the transverse pin (4) is provided, wherein preferably the outer diameter of the sleeve (3) in the region of the skirt (12) is the same as in the adjoining region of the internal thread (10). Interchangeable element (2) according to one of the preceding claims, characterized in that the sleeve (3) has an inwardly directed peripheral flange (11) on the upper edge facing away from the tip (9) or rolling surface, the inner diameter of which substantially corresponds to the outer diameter of the pole tube ( 1) in this area. Interchangeable element (2) according to one of the preceding claims, characterized in that the tip element (5) and / or the sleeve (3) consists of a material selected from the following group: metal, preferably stainless steel or aluminum; Plastic; preferably selected from the group polyethylene, polypropylene, polycarbonate, polyamide, POM wherein the plastic may be glass fiber reinforced, or combinations these materials, wherein preferably the tip element (5) consists of plastic and the sleeve (3) also made of plastic, preferably of the same plastic as the tip element (5) or of metal, preferably of aluminum, preferably with a superficial coating. Interchangeable element (2) according to one of the preceding claims, characterized in that the tip element has no plate, has an asymmetrical plate, has a symmetrical substantially circular plate, and / or that it is an alternate tip, in which between a position with with a plate and a position at which a buffer forms the rolling surface is formed, can be switched, with a plate (14) preferably this releasably changeable, preferably via a snap connection, a Drehschnappverbindung or a thread (15,16), on Tip element (5) is attached
and / or characterized in that the tip at the lower end in the tip element (5) a carbide (9) or ceramic tip is embedded, optionally using a metal fastening insert (17). Interchangeable element (2) according to one of the preceding claims, characterized in that the at least one slot, preferably both slots (6), measured from the upper edge (25) of the tip member (5) has an axial depth of at least 3 mm, preferably at least 4 mm Preferably, the slots (6) have a depth in the range of 3-15 mm, more preferably in the range of 4-10 mm and wherein the slots (6) are further preferably opposite and have the same axial depth. Exchange element (2) according to one of the preceding claims, characterized in that between sleeve (3) and tip element (5) a ring, preferably a metal ring (27) is provided, which in the mounted state, the stop surface (26) for the transverse pin (4 ), wherein the ring (27) is provided as a separate element or on the sleeve (3) or inserted in this. At a free lower end of a pole tube (1) attachable end element (2), preferably according to one of the preceding claims 1-10, in particular for a trekking pole, cross country pole, Nordic walking pole, or ski pole, with a tip element (5) which an its lower end has a tip, a rolling surface or in the lower end of a tip (9) is embedded, and which has an axial upwardly open blind hole (13) for receiving the free lower end of the pole tube (1),
characterized in that the end member 2 comprises a lower tip member (5 ") at the lower end of which a tip or rolling surface is disposed or in the lower end of which a tip (9) is recessed, and an upper tip member (5 '), in to which the lower end of the pole tube (1) is fastened via the blind hole (13), the upper tip element (5 ') being sprung relative to the lower tip element (5''), in particular by the lower tip element (5'') being upwards has an open recess (31) in which a guide portion (33) of the upper tip member (5 ') is mounted slidably sprung, further preferably by a spring element, preferably in the form of an elastomeric block (29) is arranged on the bottom of the recess (31) , on whose surface directly or indirectly a bottom (34) of the upper tip element (5 ') rests. Stock, in particular trekking pole, cross country pole, Nordic walking pole, or ski pole, with a pole (1) preferably with a handle at a first free end and a removable element (2) according to one of the preceding claims at the second free lower end, characterized that are added at the free lower end of the stick pipe, from the lower edge (23) upwards, two opposite arranged on the same axial height holes (8) are arranged in these holes a transverse pin (4) is constructed and arranged so as to both sides protrudes beyond the outer diameter of the tube at this point, preferably on both sides by 0.5-5 mm, in particular preferably on both sides 0.5-3 mm protrudes, and that the transverse pin (4) engages in the two opposite slots (6) and in this upper side at least indirectly by the attached to the tip element (5) Cuff (3) is caught. Stick according to claim 12, characterized in that it is the transverse pin (4) is a metal pin, which is preferably a solid pin, a hollow cylindrical pin or a slotted hollow cylindrical pin. Stick according to one of claims 12 or 13, characterized in that the pole tube (1) is conically formed at its free lower end and clamped at fixed exchange element (2) in the tapered blind hole (13) on the side walls and / or on the floor (22) of the blind hole (13) is arranged to stop, and the transverse pin (4) in the attached state, the lower end (21) of the slots (6) is not reached. Method for mounting a stick according to one of the preceding claims 12-14 using a tip element (2) or end element according to any one of claims 1-11, characterized in that over the free, preferably tapered lower end of the pole tube (1) in a In the first step, the sleeve (3) is slid over the pole tube (1) and further than the holes (8) in the pole tube (1), in a second step the transverse pin (4) into the two holes (8) in the pole tube (1 ) is inserted, so that the transverse pin (4) on both sides substantially the same distance beyond the outer wall of the pole (1) protrudes, that in a third step the tip element (5) with the blind hole (13) on the free end of the pole ( 1) is pushed, wherein the protruding free ends of the transverse pin (4) engage in the slots (6), and then the sleeve (3) to the free end of the pole tube (2) pushed back and fastened to the tip element (5) t will.

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