EP3288411A1

EP3288411A1 - Cross-country interchangeable plate system

Info

Publication number: EP3288411A1
Application number: EP16718271.6A
Authority: EP
Inventors: Eberhard Heim
Original assignee: Lekisport AG
Current assignee: Lekisport AG
Priority date: 2015-04-27
Filing date: 2016-04-08
Publication date: 2018-03-07
Anticipated expiration: 2036-04-08
Also published as: EP3288411B1; US10517361B2; JP2018514294A; WO2016173827A1; RU2712379C2; RU2017138999A3; CA2982805C; HK1246115B; RU2017138999A; CN107530579A; JP6893178B2; US20180295954A1; KR102515893B1; CN107530579B; CA2982805A1; KR20170140259A

Abstract

Attachment for a pole, in particular for a trekking pole, cross-country ski pole, Nordic-walking pole, or Alpine ski pole, comprising a substantially cylindrical sleeve (3) which can be fastened to the bottom free end (25) of a pole shaft (1), comprising a blind hole (22) open towards the top to accommodate the bottom free end of the pole bar, and an interchangeable element (2), which can be fastened to the sleeve in a detachable form-fitting and force-fitting manner. The sleeve comprises a head region (4) and an adjoining body region (5) extending downwards, and an outer thread (6) on at least one axial section of the body region. The interchangeable element comprises a tip or a rolling surface on the bottom end (21) thereof, wherein the interchangeable element has an axial blind hole (15) open towards the top for accommodating the sleeve.

Description

TITLE

Cross-interchangeable baskets

TECHNICAL AREA

The present invention relates to a plate changing system for cross-country poles, hiking poles, Nordic walking poles, alpine ski poles, etc. With this system, different tips essays, so not only plates, but also other end caps for sticks in mechanically stable and easily replaceable manner attached to the pole become.

STATE OF THE ART

Trekking poles, cross-country poles, Nordic walking poles, or alpine ski poles have at their upper free end of a handle and at its lower free end of a tip or a rolling surface, usually in the form of a rubber buffer. There are also systems, especially in the field of Nordic walking, in which a simple way between a tip and a rolling surface can be changed. The top elements may additionally have a plate-like extended 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 generally good connection between tip element and pole tube, but the disadvantage is that it is not readily possible to replace tip elements, either because they have to be repaired or because a e.g. due to changed user needs fundamentally different tip element is to be set up.

EP 1 025 883 B1 discloses a plate change system in which two axially spaced extensions are arranged at the lower tube end, between which a radial spring tongue of the plate attachment can snap. EP 0 906 776 A1 discloses a stick tip on which various plates can be fixed at the lower end of the stick by means of a bayonet catch. EP 0 035 200 discloses a ski pole with a snow plate releasably attachable thereto. In this case, the plate attachment has a latching lever with a hook, which is caught on the pole behind a tilted tooth at the pole end during assembly from below. When the lever is depressed, the hook moves away from the tooth, releasing the plate.

PRESENTATION OF THE INVENTION

It is accordingly an object of the present invention to provide an improved tip element in the form of an attachment with a change element for the above-mentioned applications, i. especially for a trekking pole, cross country pole, Nordic walking pole or alpine ski pole. In particular, the interchangeable element should be releasably fastened to a free lower end of a pole tube.

This object is solved by the features of claim 1.

The article according to the invention for a pole, in particular for a trekking pole, cross-country pole, Nordic walking pole or alpine ski pole, has a substantially cylindrical sleeve which can be fastened to the lower free end of a pole tube and which has a blind hole open at the top, ie having a downwardly closed recess for receiving the lower free end of the pole tube. On the sleeve, a removable element is positively and non-positively releasably fastened to the sleeve. The sleeve thus effectively serves as an adapter between pole and exchange element. The sleeve has a head region and a body region which points downwards, ie towards the tip of the stick, and adjoins the head region, at least one axial section of the body region of the sleeve having an external thread. The interchangeable element has a tip or a rolling surface at its lower end. Alternatively, a tip is recessed in the lower end of the change element. The interchangeable element also has an axial, upwardly, ie towards the stick handle out, open blind hole for receiving the sleeve. In its blind hole, or in at least one axial section of the inner wall of the blind hole, the interchangeable element has an internal thread which is suitable for fastening the interchangeable element to the sleeve into the external thread arranged on the sleeve intervene.

A particularly preferred embodiment of the attachment has a removable element which has an anti-rotation relative to the sleeve. This rotation prevents rotation, when the change element is mounted on the sleeve, a rotation of the change element in the circumferential direction about the longitudinal axis of the pole tube. For this purpose, the interchangeable element preferably has at least one latching nose extending in the axial direction, which is suitable for engaging in a corresponding recess arranged on the sleeve. This recess is preferably arranged on the head region of the sleeve, preferably on the lower edge of the head region. In a particularly preferred embodiment, the interchangeable element only a single extending in the axial direction locking lug, but it can also be arranged a plurality of locking lugs.

Advantageously, the exchange element has a plate region, preferably an asymmetric plate region, wherein the plate region preferably extends substantially in a plane perpendicular to a rod longitudinal axis, and preferably in only one direction or on only one side of the switching element, preferably in one direction the direction of travel.

If the interchangeable element has a single latching lug, then this is preferably arranged on the side of the interchangeable element which is directed counter to a running direction, i. on the side on which the plate area has its largest diameter - measured in a direction opposite to the direction - has. This asymmetric arrangement facilitates the deformation of the plate area and the engagement and disengagement of the locking lug.

To release the change element from the sleeve, the detent must first be removed from the recess of the sleeve. This is preferably achieved by means of deformation of the plate area, in particular preferably by pushing down the plate area in the axial direction downward, i. towards the tip of the stick, preferably by pressure on the plate surface on its periphery. Subsequently, the change element, until the latch has moved out of the region of the recess, normally unscrewed from the sleeve while maintaining the applied pressure, and thus removed, for example, for exchange with another change element.

To facilitate this process, according to a further preferred embodiment, the latching lug for this purpose in the latched into the recess Condition over the surface contour of the sleeve at least in the upper region survive, so that can be lifted out of the recess, for example, with a tool or with the finger, the locking lug.

According to a further preferred Ausfülirungsform the recess can leave a recess for engagement with a tool axially above the free end of the locking lug (or also laterally) in the locked state. For example, the recess can be configured slightly longer than the latching nose upwards. According to a further preferred embodiment can be provided in the change element, a mobility of the locking lug upon depression of the stock plate facilitating element, preferably in the form of a slot in the wall of the change element.

Further preferably, the latching lug can be integrally formed over a movable region in the form of a rocker on the interchangeable element, and preferably a pressing region can be arranged in a lower region facing the plate.

It is also possible that the interchangeable member has a partially movable portion with the latching nose, which forms the upper portion of the interchangeable member and is displaceable relative to the lower portion of the interchangeable member displaceable in the radial direction, so that the locking lug from the recess by manipulating one of the latching nose opposite pressing portion can be pushed.

These illustrated possibilities for facilitating the removal of the latch can be used either individually or in combination.

According to a further preferred embodiment, it is also possible to provide by suitable dimensioning and design of the sleeve and the exchange element, a construction in which the exchange element can be replaced without the aid of tools, but nevertheless does not dissolve when used as intended the exchange element. This is made possible by an upper edge of the interchangeable element (which, when the interchangeable element is in contact with the lower edge of the head region of the sleeve), extending in the circumferential direction on one side or preferably on both sides of the detent lug, extending in the axial direction to the stock plate Well. This results in that the axial height H and thus the free length of the locking lug, which is for the deformation respectively bending for removal from the recess, extended. This longer lever and in particular the fact that the top edge of the interchangeable element does not extend directly in the circumferential direction adjacent to the recess in the head region of the sleeve, causes the cuff of the change element in the region and in the direction of movement of the latch is elastic and thereby the catch can be sufficiently lifted out of the recess in the radial direction without the use of a tool , In this case, the axial height H is preferably at least 1.5 times longer, preferably 1.75 times longer, relative to the height h of the latching lug without depressions (ie considered for the situation where the upper edge simply runs around the circulation or optionally slightly inclined around the circulation). In order to facilitate the release of the positive connection of the locking lug in the recess further, it is preferably possible to form one or both of the circumferentially lateral flanks of the locking lug bevelled.

The plate portion preferably has a reinforcing rib which advantageously extends from the detent nose (e.g., immediately below it or even externally on the nose tab) to a radial tip of the pan portion or at least partially to the pan portion. The rib thus forms a coupling between locking lug and plate area. The radial tip is preferably arranged at the point at which the plate area - measured in a direction opposite to the direction of travel - has its largest diameter. The reinforcing rib, or else another area of the plate area, can have one or more recesses, cuts or recesses, which leads to material savings and thus to weight reduction of the exchangeable element. This rib causes or reinforces that, when pressed down on the plate area, the latch is also effectively displaced radially outwards and out of the recess in the sleeve. This is because, as it were, the tilting of the plate area is, to a certain extent, directly or indirectly coupled to the latching lug by the rib, with the result that, when the plate area is pressed down, the latching lug or the switching element immediately below pulls it outwards over the rib, the locking lug lifted out of the recess and thus the rotation of switching element is released to the sleeve.

For increased grip on the pad, the plate area according to a particularly preferred embodiment, in particular at a change element of the classic Nordic variant with a comparatively larger diameter plate area, on its underside at its lower end a toothing, which preferably along the lower edge to a part , in particular one to the rear, ie extending in the direction of travel part of the circumference of the plate area extends.

The male thread on the body portion of the sleeve is preferably located at an axial distance from the head portion, i. between the head region and the external thread, the body region has an upper cylindrical section which has no thread. Preferably, the head portion is separated from the body portion of the sleeve by a circumferential first shoulder. This first paragraph, or the lower edge of the head area formed thereby advantageously forms an upper stop for an upper edge of the change element at the upper end of the change element in its attachment to the sleeve.

An upper edge of the sleeve at the upper end of the sleeve preferably extends in a plane which is arranged inclined to a plane extending perpendicular to the longitudinal axis of the pole. This results in the sleeve - measured longitudinally parallel to the stock longitudinal axis - having different lengths on the front and rear sides of the sleeve, as measured from the upper edge of the sleeve to a lower edge of the sleeve at a lower end of the sleeve.

In a preferred embodiment, the head region of the sleeve is conical, with the diameter of the head region widening downwards towards the body region. Preferably, the above-mentioned lower edge of the head portion of the sleeve has the same diameter as the upper edge of the change element at the upper end of the change element.

Preferably, either sleeve or interchangeable element or particularly preferably both the sleeve and the interchangeable element at least partially made of a plastic material, preferably a thermoplastic material. More preferably, the plastic is a thermoplastic polyamide, preferably an aliphatic polyamide such as polyamide 6, polyamide 12, polyamide 66, polyamide 126 or polyamide 612. The material is preferably selected so that it does not become too soft at the usual temperatures of use Too brittle even at low temperatures, and that it has a sufficient impact resistance but still sufficient flexibility for the mobility of the detent in particular. The flexural modulus should accordingly typically be in the range of 2.5-3.5 at 23 ° C, preferably in the range of 2.75-3 MPa, at -40 ° C preferably in the range of 2.5-4, particularly preferably in the range of 3-3.75 MPa. Sleeve and interchangeable element may also be due to their separate construction made of different materials to make their properties different, for example, in terms of function, assembly or wear resistance.

The present invention further relates to a stick, in particular a trekking pole, cross-country pole, Nordic walking pole, or alpine ski pole, comprising a pole with a pole grip at an upper free end, the lower, i.e. directed towards the tip of the pole or, when used to the pad towards, free end of the pole tube has an attachment according to one of the embodiments described above. Preferably, the sleeve is fixedly mounted on the lower free end of the pole tube, preferably by gluing or pressing.

Further embodiments are described in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

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:

Figure 1 is a schematic representation of the mounted at the lower end of a pole with essay mounted thereon exchange element according to a first preferred embodiment of the invention in the form of a "Skating" -Stocktellers in a perspective view from the right rear.

FIG. 2 is a schematic representation of the attachment of FIG. 1 in a perspective view from the left front; FIG.

Fig. 3 is an illustration of the attachment of the lower end of the pole tube of Fig. 1 from the left rear with sleeve mounted thereon, wherein the interchangeable element according to FIG. 1-2 is shown detached from the sleeve, and wherein the interchangeability of the interchangeable element according to the first preferred Embodiment of Figure 1 -2 is shown with a change element according to a second preferred embodiment in the form of a "Nordic" - Stocktellers;

Fig. 4 is a schematic representation of the article of FIG. 1 with the

Interchangeable element according to the first preferred embodiment in the form of a "skating" stool in a front view;

Fig. 5 is a sectional view taken along the axial line AA of a schematic representation of the article of FIG. 1 with a

Change element according to the second preferred embodiment in the form of the "Nordic" - Stocktellers in a view from the front;

a sectional view taken along the axial line B-B of Fig. 6;

a schematic representation of the article of FIG. 1, wherein the

Interchangeability of the change element according to the first preferred

Embodiment in the form of the "Skating" -Stocktellers with a

Change element according to the second preferred embodiment in

Shape of the "Nordic" Stocktellers is shown in a schematic view from behind, that is, along the direction of travel;

a schematic representation of the attachment according to FIG 8 with the interchangeable element according to the first preferred embodiment, and right next to the interchangeable element according to the second preferred embodiment in a view from above along the floor longitudinal axis ..;

a schematic representation of the attachment according to FIG 8 with the interchangeable element according to the first preferred embodiment, and right next to the interchangeable element according to the second preferred embodiment in a side view from the right.

a schematic representation of the attachment according to FIG 8 with the interchangeable element according to the first preferred embodiment, as well as right next to the interchangeable element according to the second preferred embodiment in a view from below along the floor longitudinal axis.

various other embodiments of the interchangeable element, wherein in a) a construction is shown with a recess accessible to a tool, in b) a construction with a projecting portion of the detent is shown in c) a construction with a slot for better mobility of the detent, in d) a construction in which the detent is formed in the form of a rocker, and in e) a construction in which an entire region of the interchangeable element is designed to be radially movable with the detent;

Representations of a further embodiment, wherein the Interchangeable element is designed as a skating plate, and wherein in a) a perspective view obliquely from above at the back (respectively with respect to running direction), in b) a perspective view obliquely from above in front, in c) a view from the front and in d) the section according to the line AA in Figure c) is given; and

Fig. 14 representations of the embodiment according to Figure 13 with further

Alternating elements, a medium-sized Nordic plate (each center) and a large Nordic plate (each right), where in a) the pole with the attached sleeve without changing element is shown in b) the various possible on the sleeve according to figure a ) exchangeable exchangeable elements in a perspective view obliquely from above at the back (in each case with respect to running direction), in c) a view from behind and in d) a view from above. DESCRIPTION OF PREFERRED EMBODIMENTS

In the figures 1 and 2, a lower portion of a pole tube 1 is shown in each case, with a mounted thereon attachment according to a first embodiment. In these two representations, a change element 2 is attached to a sleeve 3 respectively. The sleeve 3 is fixed here by a cohesive, non-positive or positive connection, for example by gluing and / or pressing, fixed at the lower free end 25 of the pole tube 1. In this case, the interchangeable element 2 closes axially downwards against the lower edge 13 (see Fig. 3) of the head region of the sleeve 3. The interchangeable element 2 has an upper region, which has a latching nose 12 projecting axially upwards from the upper edge 20 of the interchangeable element. The middle region of the change element 2 has an asymmetrical plate region 11, which extends here in the radial direction on only one side of the change element 2, in a plane El substantially perpendicular to the longitudinal axis S. The lower region of the change element 2 has a tip 16 which is embedded in the lower end 21. The illustrated tip 16 is angled in a direction (running direction) to the side of the switching element 2, which is opposite to the side in which the plate portion 11 extends.

In the illustration of FIG. 3, the sleeve 3 mounted at the lower free end of a pole tube 1 is shown at the top. The inventive article is therefore in two parts formed, namely from sleeve 3 and change element 2 or 2 '. The pole tube 1 is inserted with its lower free end 25 in the sleeve 3 and secured therein. The sleeve 3 has a head region 4 and a body region 5, which adjoins the head region 4 in the axial direction S at the bottom. The head region 4 has a lower edge 13, which is formed by a circumferential shoulder 7 (see Fig. 5), on which the head region 4 merges into the body region 5, or forms the boundary between the head region 4 and the body region 5 , At this lower edge 13 and the stick handle, not shown, a recess 8 and a notch in the head portion 4 is provided, which serves to receive and latching axially extending from the upper edge 20 of the switching element 2 locking lug 12. When attaching the change element 2 to the sleeve 3, this locking device in addition to the attachment and the rotation is used by the change element 2 in the circumferential direction U against the sleeve 3 and against the pole tube 1 rotationally fixed positively secured. This is of particular importance in asymmetrical stick dishes such as the two illustrated in FIG.

In the illustrated embodiment of Fig. 3, the sleeve 3 in a central region of the body portion 5 also axially below the first circumferential shoulder 7 a second circumferential shoulder 14. Below this second circumferential shoulder 14, the body portion 5 has an external thread 6, which extends over an axial portion of the body portion 5 downwards. The upper edge 9 of the sleeve 3, or the head portion 4 of the sleeve 3 has in this preferred embodiment, an averse surface. This lies in a plane E2 (see also Fig. 7), which is angled towards the plane El (see, for example, Fig. 6), which extends perpendicular to the longitudinal axis S and in which substantially the plate area 11, 1 P extends.

Immediately below the sleeve 3, a change element 2 according to a first preferred embodiment as shown in Fig. 1 and 2 shown in Figure 3 on the left. Right next to a change element 2 'is shown according to a second embodiment. The demand-dependent interchangeability of the two change elements 2 and 2 'is represented by two arrows. The interchangeable element 2 shown on the left is shown in the form of a so-called "skating" stool, which is used, for example, in the "skating" variant of cross-country skiing, in contrast to the interchangeable element 2 'shown on the right in the form of a so-called "Nordic" stool greater Diameter, which is mainly used for classic or Nordic cross-country skiing. Both variants of the change element 2, 2 'have an asymmetrical plate area 11, 11' which extends from the pole tube 1 on only one side of the change element 2, 2 'substantially in a direction opposite to the running direction L. The interchangeable element 2, 2 'is in each case integrally formed, with a carbide or ceramic tip 16 embedded in or attached to the lower end 21. The interchangeable element 2, 2' has to receive the sleeve 3 at the free lower end 25 of the pole tube 1 Blind hole 15 on. Inside the change element 2, 2 ', the wall of the blind hole 15 has an internal thread 2, as shown in Fig. 5, approximately at middle height of the blind hole 15. The internal thread 2Γ engages in the external thread 6 of the sleeve 3, if the change element 2, 2 'is screwed onto the lower end of the stick. In the assembled end position, the latching lug 12 engages on the upper edge 20 of the change element 2, 2 'substantially positively in the above-mentioned corresponding recess 8 in the head portion 4 of the sleeve 3 a. The detent 12 in the illustrated embodiment is formed with upwardly tapered contour.

The interchangeable element 2 'shown on the right has a reinforcing rib 18 or strut, which extends from the latching lug 12 up to the radial tip 24 of the plate area 11' at the point with the largest diameter d3. The reinforcing rib 18 has a recess 19 in the form of a through opening arranged transversely to the direction of extension of the reinforcing rib 18, which serves for material and thus weight saving, and a notch or recess 26 surrounding the recess.

4 shows a view of the attachment according to the invention with the change element 2 according to the first exemplary embodiment of the invention, ie with the "skating" plate, in a view opposite to the running direction L, ie viewed from the front The entire plate area 11 is formed on a side of the change element 2 opposite to the running direction L, ie, in the running direction towards the rear The change element 2 has its widest point or the widest diameter d3 at the point at which the plate area 11 is arranged is tapered towards the upper edge 20 and down to its lower end 21. The sleeve 3 is inserted into the change element 2 such that only the head portion 4 protrudes from the change element 2, wherein the arranged above the plate portion 11 upper portion of the change element 2 at the upper edge 20 of the change element 2 almost seamlessly merges into the head area 4. The lower edge 13 of the head region 4 rests on the upper edge 20 of the change element 2. 7, the length 11 of the sleeve 3 is also formed in the plane E2 (see FIG rear area longer than the length 12 in the front area. The lower portion of the change element 2 is formed conically converging downwards, as shown in Fig. 4 can be seen. The plane El, in which the plate region 11 extends substantially, is perpendicular to the longitudinal axis S.

In the sectional view of Figure 5, the engagement of the internal thread 2Γ of the change element 2 in the external thread 6 of the sleeve in a central region of the blind hole 15 of the change element 15 can be seen. The pole tube 1 is completely inserted into the blind hole 22 of the sleeve 3. When fully inserted into the blind hole 15 of the switching element 2 sleeve 3, the sleeve 3 is spaced with a small axial gap 27 from the bottom of the blind hole 15.

Fig. 6 corresponds to the view of Fig. 4, except that in the illustrated article of Fig. 6, the change element 2 'according to the second preferred embodiment, i. is placed on the sleeve 3 with the diameter larger Nordic plate area 11 '. In Fig. 6 and in the sectional view of Fig. 7, the forward, i. in the direction L directed broadening 28 of the diameter in the region of the switching element 2, in which the plate portion 11 'is arranged to recognize. The underside 23 'of the change element 2' of Fig. 7 has at the rear of a toothing 17, which gives the stick increased grip on the surface.

In Fig. 8, the interchangeability of the two variants of alternating elements 2, 2 'is again shown schematically with arrows. The plane El, in which the plate area 11, 11 'extends substantially, is thereby spanned by the radial tip 24 of the plate area 11, 11' (as also shown in FIG. 11) and the intersections of the side edge 29 of the plate area 11, 11 'at the location with the greatest width b3 of the plate area 11, 11'. This plane El is substantially perpendicular to the longitudinal axis S.

In Fig. 9, the same two variants of the change elements 2, 2 'are shown from above, wherein the concentric arrangement of the pole tube 1, the sleeve 3 and the change element 2, 2'erkennbar ist. It can also be seen that the latching lug 12 in a direction opposite to the direction L radially with the radial tip 24 of the Plunger area 11, 11 'is aligned, here along the reinforcing rib 18. If you press the plate area 11, 11' at this point with the largest diameter d3 (measured from the stock longitudinal axis S against the direction L) down, the locking lug 12 snaps off the recess 8 out and the removable element 2, 2 'can be unscrewed from the sleeve 3. This arrangement of the locking lug 12 simplifies the mechanical deformation of the plate area 11, 11 '.

The side view of the two change elements 2, 2 'in Fig. 10 shows a view of the side contours, in the bottom view of Fig. 11, the relative dimensions of the two plate variants are clearly visible. The largest width b3 or b3 ', the plate portion 11 and 1 Γ between the most projecting portions of the side edge 29 of the plate portion 11, and 11', wherein the width is measured perpendicular to the diameter d3, which in one of the direction L opposite direction is measured as the distance of the radial tip 24 of the stock longitudinal axis S.

In Figure 12 various other variants of changing elements are shown, with different means which facilitate that the locking lug 12 can be led out of the recess 8 to solve the positive connection in the locked state.

For example, in Figure 12 a) a variant is shown in which the recess 8 axially above the free upper end of the locking lug 12 in the locked state leaves a recess 31 for engagement with a tool, such as a screwdriver 30. To release can be intervened with the screwdriver 30 in this recess 31, the screwdriver are tilted, and then the exchange plate to be screwed.

In Figure 12 b) a variant is shown in which the locking lug 12 protrudes for this purpose in the latched state in the recess 8 on the surface contour of the sleeve 3 at least in the upper region 32. So then either with a tool or simply with a finger, the locking lug 12 are gripped on the upper edge and led out of the recess 8. This variant can preferably also be combined with a recess 31 as shown in FIG. 12a.

In Figure 12 c), a further variant is shown, in which the change element 2, a mobility of the locking lug 12 when depressing the stick plate 11 facilitating element, is provided here in the form of a slot 33 in the wall of the switching element 2. If the plate is pressed down, the whole shifts on the right Side of the slot 33 arranged portion of the switching element 2 and so the positive connection can be solved with ease. In this case, the plate is pressed in the other direction than shown by the arrow in Figure 12 c) can still ensure a secure attachment during use.

Another possible construction is shown in FIG. 12 d), here the detent 12 has a movable region 35 in the form of a rocker on the interchangeable element. This rocker is integrally formed on the interchangeable element 2, wherein there is a flexible portion 35, which acts as a kind of pivot point. Thus, a pressing region 34 is formed in the plate-facing lower portion of this rocker is pressed on this lower price range 34, for example, by hand as shown by the arrow forgives the rocker around the flexible portion 35 and the latch 12 is led out of the recess 8. Finally, FIG. 12 e) shows a design in which the interchangeable element 2 has a partially movable region 37 with the detent 12, which forms the upper region of the interchangeable element 2 and is designed to be displaceable relative to the lower region of the interchangeable element 2 in the radial direction , This part movable area surrounds the sleeve 3 in the upper area to continuously, so that by manipulation of the latching nose 12 opposite pressing portion 36, for example with a finger, the locking lug 12 can be pushed out of the recess 8. This construction has the advantage that it can not be triggered undesirable when loading the plate.

FIGS. 13 and 14 show a further exemplary embodiment of such an alternating tip. The same or analogous elements are denoted by the same reference numerals as in the embodiments described above. What makes this embodiment significantly different from the embodiments described above is that the top edge 20 of the change element 2 is specially designed. While in the embodiments described above, the upper edge extends substantially at the same height, so to speak circulating in a circle and runs in the axial direction except for the locking lug 12 at the same height, there is in this embodiment, on both sides of the latch 12 each one Recess 38 in this upper edge 20. The upper edge 20 is in the adjacent to the detent 12 areas on both sides of the plate back to form the two recesses 38, this causes the locking lug 12, which without the recesses with respect to the normal height the upper edge 20 has a height h (See Figure 14c) now has a substantially greater height H due to the two recesses 38 arranged laterally therefrom. Preferred Maßn are the two wells 38 in the axial direction at least half as long as the height h of the locking lug without the two wells 38, particularly preferably the height H, taking into account the wells about twice as large as the height h without the two wells.

This means that the length of the tongue-shaped axial locking lug 12 becomes larger, and thus also the length available for bending the locking lug 12. In this way, a construction can now be made possible in which the recess 8 has a considerable length in the axial direction, in the example given in the range of 3-5 mm, and thus provides an excellent positive locking when engaged by the locking lug 12. On the other hand, the locking lug 12 through the recesses 38 is sufficiently flexible that even without tools, simply using a slightly larger initial force, the removable element can be solved by turning and the locking lug 12 can be pushed out of the recess 8 by this force. In order to facilitate this process, the lateral flanks 39 extending radially to the pole axis are designed to converge towards the pole axis. In this way, upon application of the rotational force to the latched interchangeable element by the then entering into abutment with the lateral boundary of the recess 8 oblique flank 39 produces a radially outwardly directed force component, which allows the detent not inseparably in the recess. 8 bite hard, but rather just released with a sufficiently increased release force.

The thus made possible without tool changeable construction, which is shown in Figure 14 in each case for the various change options, by an appropriate choice of material (eg polyamide 66) and dimensions (for example, H of about 9 mm, h of about 4-5 mm, radial thickness of the locking lug about 2 mm and width in the circumferential direction of the locking lug of 3-5 mm circumferential length of the recess 38 at the height of the upper edge in the range of 5 mm) adjusted so that the release force of the switching element is so large that at Use the interchangeable element can not solve the user but still without tools and without excessive force application by turning the interchangeable element can turn off.

LIST OF REFERENCE NUMBERS Stick tube 24 radial tip of 11, 1 Γ

Interchangeable element 25 lower free end of 1

(Skating variant) 26 notch / recess in 18 'exchange element (Nordic 27 axial gap in 15

Variant) 28 widening to 2 '

Sleeve 29 side edge of 11, 11 '

Head section of 3 30 screwdrivers

Body area of 3 31 exposed recess

Male thread at 3 above 12 in 4 first paragraph at 3 between 32 radially outward

4, 5 projecting area of 12

Recess in 4 for 12 33 slot in wall of 2 circumferential upper edge of 3 34 pressing area of 120 circumferential lower edge of 3 35 flexible mounting area1 plate area of 2 (skating of 12

Plate) 36 opposite 1 'plate area of 2' (Nordic Pressbereich

Teller) 37 teilbeweglicher range of 22 locking lug at 2, 2 '38 recess in the

3 lower edge of 4 circumferential upper edge 204 second paragraph to 3 39 lateral flanks of 125 blind hole in 2, 2 'for 3

6 point in / at 2, 2 'h axial height of the latch 7 teeth on 23' 12 without 38

8 reinforcing rib at 2 'H axial height of the locking lug 129 recess in 18 with 38

0 top edge of 2, 2 'L running direction

1 lower end of 2, 2 'S stick longitudinal axis

V internal thread in 15 u circumferential direction

2 blind holes in 3 for 1 11 length of 3 in the back3 bottom of 1 1 area

3 'bottom of 1 1' 12 length of 3 in the front Area

b3 width of 11

b3 'width of 11'

dl diameter from 4 to 9 d2 diameter from 4 to 13 d3 largest diameter of 11 d3 'largest diameter of 11'

El plane perpendicular to

Stick longitudinal axis S, often

Plate plane or parallel to it

E2 level formed by the exposed, the pole tube 1 embracing upper edge of the sleeve

Claims

1. attachment for a stick, in particular for a trekking pole, cross-country pole, Nordic walking pole, or alpine ski pole, comprising a at the lower free end (25) of a pole tube (1) attachable, substantially cylindrical sleeve (3), which an upwardly open blind hole (22) for receiving the lower free end (25) of the pole tube (1), and wherein on the sleeve (3) a removable element (2) form-fitting and non-positively releasably on the sleeve (3) can be fastened wherein the sleeve (3) has a head region (4) and a body region (5) adjoining the head region (4) at the bottom, and at least one axial section of the body region (5) of the sleeve (3) has an external thread (6 ), wherein the change element (2) at its lower end (21) has a tip or a rolling surface, or in the lower end (21) a tip (16) is recessed, and wherein the change element (2) an axial upward open blind hole (15) to Receiving the sleeve (3), characterized in that the interchangeable element (2) in its blind hole (15) has an internal thread (2) which is suitable for attaching the interchangeable element (2) to the sleeve (3) in the engage the sleeve (3) arranged external thread (6).

2. Attachment according to one of the preceding claims, characterized in that the interchangeable element (2) has a rotation relative to the sleeve (3) which in a mounted on the sleeve (3) state, a rotation of the change element (2) in the circumferential direction (U ) around the longitudinal axis (S) of the pole tube (1) prevented.

3. attachment according to one of the preceding claims, characterized in that the interchangeable element (2) has at least one in the axial direction (S) extending latching lug (12) which is suitable in a on the sleeve (3) arranged corresponding, preferably axial and corresponding recess (8) engage, wherein the change element (2) preferably only a single extending in the axial direction latching lug (12) and further Preferably, the sleeve (3) only a corresponding, preferably axial and corresponding recess (8).

4. attachment according to one of the preceding claims, characterized in that the exchange element (2) has a plate portion (11, 11 '), preferably an asymmetric plate portion (11, 1 Γ), wherein the plate portion (11, 11') preferably extends substantially in a plane (E) perpendicular to a longitudinal axis of the rod (S), and wherein the plate portion (11 ') preferably at its lower end a toothing (23').

5. attachment according to claims 3 and 4, characterized in that the single latching lug (12) on the counter to a running direction (L) directed side of the change element (2) is arranged, on which the plate area (11, 11 ') its largest Diameter (d3) measured in one of the running direction (L) opposite direction.

6. attachment according to one of claims 4-5, characterized in that the interchangeable element (2) by removing the latching lug (12) from the recess (8), preferably by deformation of the plate area, particularly preferably by pressing down the plate area (11, 11 ') in the axial direction, and by subsequent unscrewing of the change element (2) of the sleeve (3) of the sleeve (3) is releasable.

7. attachment according to one of claims 3-6, characterized in that the plate portion (11, 1) has a reinforcing rib (18) which preferably from the latching lug (12) to a radial tip (24) of the plate area (11, 11 ') extends at the point of greatest diameter (d3) of the plate region (11, 1) in a direction opposite to the running direction (L).

8. attachment according to one of claims 3-7, characterized in that the removable element (2) by removing the latching lug (12) from the recess (8) and by subsequently unscrewing the change element (2) of the sleeve (3) is removable , in which the latching lug (12) projects beyond the surface contour of the sleeve (3) at least in the upper region for this purpose in the state latched into the recess (8) (32)

and / or the recess (8) releases a recess (31) for engagement with a tool (30) axially above the free end of the latching lug (12) in the latched state,

and / or in the interchangeable element (2) has an element facilitating the mobility of the latching lug (12) upon depression of the stick plate (11), preferably in the form of a slot (33) in the wall of the interchangeable element (2) and / or the latching lug (12 ) is formed over a movable region (35) in the form of a rocker on the interchangeable element (2), and preferably in a lower region facing the plate (11) a pressing region (34) is arranged;

and / or a top edge (20) of the exchange element (2) facing a head region (4) of the sleeve (2) in the circumferential direction on one side or preferably on both sides of the latching lug (12) a recess extending in the axial direction towards the rod plate (11) (38), so that the axial height (H) and thus the free length of the latching lug (12) is extended, wherein preferably the axial height (H) relative to the height (h) of the latching lug (12) without depressions (38) is at least 1.5 times longer, preferably 1.75 times longer, and / or further wherein preferably in the circumferential direction lateral flanks (38) of the latching lug (12) are chamfered;

and / or the interchangeable element (2) has a partially movable region (37) with the latching lug (12) which forms the upper region of the interchangeable element (2) and is displaceable relative to the lower region of the interchangeable element (2) in the radial direction, thus by manipulation of the latching nose (12) opposite pressing region (36), the latching lug (12) from the recess (8) can be pushed.

9. attachment according to one of the preceding claims, characterized in that the external thread (6) on the body portion (5) of the sleeve (3) from the head portion (4) is axially spaced, and / or preferably that the head portion (4) by a circumferential first paragraph (7) from the body portion (5) of the sleeve (3) is separated.

10. Attachment according to one of the preceding claims, characterized in that an upper edge (9) of the sleeve (3) at the upper end of the sleeve (3) in a plane (E2) extends, which is inclined to a perpendicular to the longitudinal axis of the stock (S) Plane (El) is arranged so that the sleeve (3) in the longitudinal direction parallel to the stock longitudinal axis (S) measured different lengths (11, 12), measured the upper edge (9) of the sleeve (3) up to a lower edge (10) Sleeve at a lower end of the sleeve (3).

11. Attachment according to one of the preceding claims, characterized in that the head region (4) of the sleeve (3) is conical, wherein the diameter of the head region (4) widens down to the body region (5).

12. Attachment according to one of the preceding claims, characterized in that the lower edge (13) of the head portion (4) of the sleeve (3) has the same diameter (d2) as the upper edge (20) of the change element (2) at the upper end of the change element (2).

13. Attachment according to one of the preceding claims, characterized in that a circumferential first shoulder (7) between the head region (4) and the body region (5) of the sleeve (3) has an upper stop for an upper edge (20) of the change element (2 ) at the upper end of the change element (2).

14th floor in particular trekking pole, cross country pole, Nordic walking pole, or alpine ski pole, comprising a pole (1) with a pole grip at an upper free end, wherein the lower free end (25) of the pole (1) according to an essay one of the preceding claims.

15. Stick according to claim 13, characterized in that the sleeve (3) fixed to the lower free end (25) of the pole tube (1) is mounted, preferably by a cohesive, non-positive or positive connection, for example by gluing and / or pressing.