EP2160115B1 - Stick with a shock absorber - Google Patents

Description

TECHNICAL AREA

The present invention relates to a pole, such as a trekking, skiing, hiking, or Nordic walking pole, which has a pole grip, a pole tube of at least three telescopic tubular sections, and a pole tip. Two adjacent pipe sections are adjustable relative to each other. The inventive floor has a damping device with a rotatably held in a first pipe section guide sleeve in which an axially held on a second pipe section axle pin is guided.

STATE OF THE ART

Various sticks with shock absorbers are known from the prior art, such as in the DE-U-298 13 601 and the CH 680 771 A5 , which, however, both allow only a relatively hard shock absorption. The EP 1 435 805 B1 discloses a shock absorbing floor whose impact characteristics are less harsh and whose spring back characteristics are less jerky and recoil free as compared to the first two mentioned documents, thanks to a special serial arrangement of the compression spring device. The US 2002/0170587 A1 discloses a length adjustable walking stick with three telescopic sections and a damping device with a compression coil spring, which is guided around an axle pin around.

PRESENTATION OF THE INVENTION

The invention is therefore an object of the invention to provide a structurally simple floor with damping device available, which has the smallest possible weight and packing size and has the best possible swing behavior, the damping device should be accommodated as space-saving.

The object is achieved by a stick according to claim 1, such as a trekking, skiing, hiking, or Nordic walking stick, with handle, pole and stick tip, which has at least three telescoping pipe sections. In each case two adjacent pipe sections are adjustable relative to each other. The inventive floor has a damping device or a shock absorber with a rotatably held in a first pipe section guide sleeve and with a compression spring device, wherein in the guide sleeve an axially held on a second pipe section axle pin is guided. Here, the first pipe section of the bottom pipe section and the second pipe section of the second lowest pipe section of the pole tube.

The core of the invention is thus to shift the compression spring device, which is otherwise arranged in sticks with three pipe sections respectively in the central pipe section or between the two upper pipe sections, in the lower pipe section or between the two lower pipe sections. In this case, the lowest pipe section of the three telescoping pipe sections on the smallest diameter and is at the same time in the telescoped state or in the smallest packing size of the innermost pipe section. The diameter of the uppermost pipe section is greater than the diameter of the middle or second lowest pipe section and this in turn is greater than the diameter of the lowermost pipe section. For example, in sticks with four pipe sections, preferably at least one compression spring device is arranged in the lowest of the four pipe sections, wherein the lowermost pipe section is at the same time the innermost of the four pipe sections.

Alternatively and generally, it is in a floor construction (eg, with three telescopic sections), in which the uppermost tube has the smallest diameter to arrange the compression spring device, as described here, in the uppermost pipe section with downward clamping device, then there are also beneficial Swing behavior and minimal packing size.

By the displacement of the compression spring device in the bottom tube section is The weight and the size of the stick reduced because less pipe material is needed. At the same time, therefore, the center of gravity of the stick is shifted further down, resulting in an improved swing behavior of the stick. By laying the compression spring device out of the middle pipe section out, it is now possible to telescope the three pipe sections substantially completely into one another, so that the length of the pipe is reduced by about two-thirds in pack size.

The Indian EP 1 435 805 B1 Although introduced floor brings an improvement in damping properties, but by the arrangement of relatively complex compression spring device in the middle floor section can be the stick, no longer telescope completely, since the damping device is in the outer of two pipes the inner tube in the way. With such a design, it must always be ensured that the installed spring unit is taken into account with regard to the tube lengths. This has an effect on the packing size of a telescopic stick in such a way that the lower part or the innermost pipe section abuts on the spring unit. In the production of telescoping sticks with three pipe sections of different diameters, for example, in the case of an arrangement of the shock absorber in the central pipe section additional costs for the production of pipe sections, which do not have the standard length, which are used in sticks without shock absorber, be spent.

By the displacement of the spring unit in the lower part, ie in the lower or inner pipe section, the space is free, which was previously claimed for the installation space of the spring in the middle part, ie in the middle pipe section. In the inventive arrangement of the compression spring device in the lower and inner of two pipe sections, the interior of this pipe section can be used arbitrarily, since there is usually no Längenverstellmechanismus arranged. In addition, it is achieved by the displacement according to the invention that the stick has a smaller weight, since several centimeters of pipe are saved, which previously had to be used for the installation space in the middle pipe section. In particular, the compression spring device can by their installation in the lowest Tube section filigree or are designed with a smaller diameter, since less material is necessary to fill the bottom or innermost telescoping tube section, which thus also has the smallest diameter tube. This also brings with it a weight reduction of the built-in compression spring device with it. Moreover, it is possible by the inventive construction, to use for poles with shock absorbers the same tube lengths as for poles without shock absorber, the additional costs of making special lengths are eliminated, which must be used when the compression spring device is arranged in the middle tube section, there a longer Pipe section is necessary. It is also possible that all three telescoping pipe sections of a pole tube have the same length.

In the above-mentioned embodiment of the invention, the lowermost pipe section has a central axial cavity or a blind hole, in which the guide sleeve is embedded.

According to a first preferred embodiment, the lowermost pipe section has a smaller diameter than the second lowermost pipe section, wherein preferably also the second lowermost pipe section has a smaller diameter than the third lowermost pipe section adjacent to it.

The compression spring device is mounted or arranged entirely in the guide sleeve. The guide sleeve is preferably mounted at least with a lower region and a central region in the lowermost tube section. It is advantageous if the guide sleeve is mounted in a proportion of about 60-90%, preferably about 80% of its length in the lowermost tube part.

According to a further preferred embodiment of the invention, the compression spring device has at least one pressure coil spring and / or at least one elastomer spring. Various serial or parallel arrangements of compression coil spring (s) and elastomer spring (s) are possible. A particularly good damping behavior is achieved when the pressure spring device in series arrangement a compression coil spring and at its two axial ends one each Has elastomeric spring. A shutdown possibility of the compression spring device or a bias of the suspension is conceivable. In addition, springs with different spring characteristics, for example due to different hardness or different spring constants, may be provided in the compression spring device. With respect to the properties of the compression spring arrangement, the subject matter of EP 1 435 805 B1 explicitly included in the disclosure of the present specification. The spring travel in the inventive floor is substantially 5-15 mm, preferably 7-12 mm, particularly preferably 8-10 mm. Due to different spring characteristics of Druckwendel- and elastomer springs, for example, a non-linear damping can be achieved. The same applies to the expansion, ie the receding course.

The pole tube preferably has two, three or four, more preferably three telescoping tube sections. The lowermost tube section of the inventive stick according to a further preferred embodiment has a diameter of 10-14 mm, preferably 12 mm. The second lowermost pipe section advantageously has a diameter of 12-16 mm, preferably 14 mm, and the third lowermost pipe section has a diameter of 14-18 mm, preferably 16 mm. The construction according to the invention makes it possible, according to a further preferred embodiment, for all pipe sections to have the same length.

Above the guide sleeve can be arranged coaxially to the compression spring device a center piece on the axle. This middle piece, which preferably consists of plastic or metal, can for example be screwed or sprayed onto the axle pin. It can simultaneously serve as a stop for any adjustment mechanism arranged above the compression spring device and at the same time serve as a blocking safeguard. But it can also meet, for example, the task of a spacer or stop for pipe sections.

Alternatively or in addition to the middle piece, an additional damping element, preferably an elastic ring, in particular preferably a rubber ring or an O-ring of elastic material, may be arranged on the axle pin to the compression spring device above the guide sleeve. If there is a center piece, that is additional damping element preferably arranged below the middle piece and adjacent to this. Although the elastic ring is not mandatory for the function of the spring system. However, this additional damping element has the purpose of noise-reducing cushioning of the floor. Without such a damping element, could occur in compressed position of the stick at the meeting of eg formed of metal parts in the transition region between two pipe sections, for example, the insert piece on the bottom pipe to the center piece, a disturbing noise.

Preferably, the guide sleeve between an upper portion and a lower portion of a stop, preferably a circumferential shoulder, on which the bottom tube portion rests with its upper edge. It is conceivable that the upper, middle and lower regions of the guide sleeve each make up substantially one third of the length of the guide sleeve, but it is preferred if the upper region, which preferably protrudes from the lowermost tube, is smaller than the middle one and lower area. The upper region preferably has at its lower edge a circumferential shoulder on which the lowermost tube section can rest with its upper edge. This paragraph can either be integrally formed or attached to the upper portion of the guide sleeve.

According to a further preferred embodiment of the invention, the guide sleeve, preferably in its central region, at least one axial slot, but preferably two opposing slots. In this case, a cross pin is perpendicular to the pole axis in the guide sleeve, preferably arranged above the compression spring device and at least partially in the slot, so that it is axially movable in the slot between an upper stop and a lower stop. In addition, it is possible and preferred that the transverse pin extends through the lower end of the axle pin.

Coaxially with the compression spring device and preferably above the compression spring device, at least one spreading device is arranged on the axle pin. With regard to the spreading device, the subject of the EP 1 450 906 B1 explicitly included in the disclosure of the present specification. After a Another preferred embodiment of the damping device having lowermost pipe section with the spreading device in the second lowest pipe section is axially clamped. In this case, the spreading a radially auseinanderdrückbares and provided with an inner cone spreader and provided with an opposite outer cone and axially displaceable in the expansion element accommodated inner member, and an axially directed, rotatably held at the lowermost pipe section adjustment screw, which is in operative connection with an internally threaded bore in the inner element , The inner cone of the expansion element preferably extends in such a way that it opens towards the lowermost tube section, and that the expansion element is arranged coaxially between a lower inner tube-side stop, preferably on the guide sleeve, particularly preferably on an insert piece anchored on one side in the guide sleeve or on the above the guide sleeve Middle piece, and an upper stop at the free end of the adjusting screw is preferably held axially movable within small limits.

The inner cone is formed in two parts according to another preferred embodiment of the invention. But it can also be integrally formed and have a continuous, open top and bottom axial slot. It can thereby be achieved that, for example, in wear phenomena of the inner cone is replaceable, since it is not only axially mounted on the axle pin, but also with already fastened fastener in the radial direction can be clamped onto the axle pin. For this purpose, the inner cone, for example, have a film hinge or another connecting means for the two conical halves. In the presence of a spreading the center piece or the additional elastic damping element, or if these two parts are not present, the upper end of the insert or the guide sleeve provide a stop for the expansion element. For the subsequent assembly of the inner cone, together with a slotted or split embodiment, it is also conceivable for the inner cone to be foldable via film hinges in order to reach over the firmly connected screw head or the head of another fastening means.

In an inventive pole with spreading device, it is possible that the axle pin has a thread in an upper region, preferably only in the region on which the spreading device is mounted. The head of the axle pin is preferably firmly formed. But it can also be releasably secured to the axle, for example by means of an attached stop nut or screw. Preferably, this separately patched end-forming head of the axle pin is fixed with a high-load connection method, which subsequently produces the effect of a fixed molded head to provide a resilient contact shoulder for the expansion element available. If the head is firmly formed, i. If the axle pin is integrally formed with the head, it is conceivable that the inner cone is screwed from below onto the axle pin during assembly, before the axle pin is inserted into the guide sleeve. If a head can be placed separately, a non-slotted or split inner cone can also be replaced later by removing the head and installing the inner cone over the then free upper end.

If a compression coil spring is arranged, then the compression spring device preferably has at least one pin, which projects into one end of the compression coil spring and has a projection. It is advantageous in a series arrangement of Druckwendel- and elastomeric spring when the projection of the pin directly adjacent to the elastomeric spring, wherein it is prevented that the elastomeric spring penetrates into the compression coil spring. In such a case, the pin is arranged between Druckwendel- and elastomeric spring, so to speak, wherein the two types of spring are axially spaced at most by a small portion of the pin projection.

During assembly, the compression spring device is first inserted into the guide sleeve. In this compression spring device, a receiving element is advantageously placed, which is preferably formed substantially cup-shaped upwardly open, and in which then the axle is inserted. Subsequently, preferably, an insert piece can be placed on the guide sleeve, which partially engages axially in the guide sleeve and also has a central recess for receiving the axle pin. The insert advantageously has at its in the guide sleeve projecting portion at least one, preferably two lugs or a circumferential nose, which self-engage in corresponding recesses or at least one undercut in the guide sleeve. To the cross pin through the guide sleeve and into the slot, or preferably to introduce the two opposite slots in the bottom tube section, force can be exerted from above on the axle until the piercing at the bottom of the Achsstiftes comes to rest in the slot , So that the transverse pin can be inserted through the slot and the piercing opening of the axle pin and the preferably present opposite second slot. Thus, it may be that the compression spring device is slightly biased even in the non-compressed position of the stick. At the same time, the transverse pin prevents the compression spring from tearing upwards and permits axial mobility of the pressure spring device within the elongated hole. Subsequent to the insertion of the transverse pin, the guide sleeve can be inserted into the blind hole of the lowermost tube section.

Furthermore, it is possible that the axle pin formed in two parts and that the two parts are connected via a connecting part. However, a one-piece construction of the axle pin is preferred because it allows a simplified construction. The one-piece axle pin is formed continuously in such a case. The axle pin preferably has a diameter of 0.3-1 cm, preferably between 0.4 and 0.7 cm.

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

BRIEF EXPLANATION OF THE FIGURES

Fig. 1

zwei schematische Ansichten einer Dämpfungsvorrichtung gemäss einer ersten bevorzugten Ausführungsform der Erfindung in ungestauchtem Zustand, wobei Fig. 1a) und Fig. 1b) die Dämpfungsvorrichtung von zwei um 90 Grad verdrehten Ansichten zeigen; und

Fig. 2

zwei axiale Schnitte durch die Dämpfungsvorrichtung von Figur 1, wobei in Fig. 2a) ein Schnitt durch die Schnittachse A-A und in Fig. 2b ein Schnitt durch die Schnittachse B-B dargestellt sind; und

Fig. 3

zwei schematische Ansichten einer Dämpfungsvorrichtung gemäss einer ersten bevorzugten Ausführungsform der Erfindung in gestauchtem Zustand, wobei Fig. 3a) und Fig. 3b) die Dämpfungsvorrichtung von zwei um 90 Grad in Umfangsrichtung verdrehten Ansichten zeigen; und

Fig. 4

zwei axiale Schnitte durch die Dämpfungsvorrichtung von Figur 3, wobei in Fig. 4a) ein Schnitt durch die Schnittachse C-C und in Fig. 4b ein Schnitt durch die Schnittachse D-D dargestellt sind; und

Fig. 5

drei alternative Ausführungsbeispiele einer erfindungsgemässen Dämpfungseinrichtung in ungestauchtem Zustand in einer schematischen Ansicht, wobei Fig. 5a) eine Dämpfungsvorrichtung ohne Mittelstück, die Fig. 5b) eine Dämpfungsvorrichtung ohne Gummiring, und Fig. 5c) eine Dämpfungseinrichtung ohne Mittelstück und Gummiring darstellt; und

Fig. 6

schematische Darstellung eines Stocks mit drei teleskopierbaren Rohrabschnitten.

The invention will be explained in more detail with reference to embodiments in conjunction with the drawings. Show it:

Fig. 1

two schematic views of a damping device according to a first preferred embodiment of the invention in an unstretched state, wherein Fig. 1a) and Fig. 1b ) The damping device of two by 90 degrees show twisted views; and

Fig. 2

two axial sections through the damping device of FIG. 1 , where in Fig. 2a ) a section through the section axis AA and in Fig. 2b a section through the sectional axis BB are shown; and

Fig. 3

two schematic views of a damping device according to a first preferred embodiment of the invention in a compressed state, wherein Fig. 3a) and Fig. 3b ) show the damping device of two views rotated by 90 degrees in the circumferential direction; and

Fig. 4

two axial sections through the damping device of FIG. 3 , where in Fig. 4a ) a section through the cutting axis CC and in Fig. 4b a section through the cutting axis DD are shown; and

Fig. 5

three alternative embodiments of a damping device according to the invention in undamped state in a schematic view, wherein Fig. 5a ) a damping device without center piece, the Fig. 5b ) a damping device without rubber ring, and Fig. 5c ) represents a damper without center piece and rubber ring; and

Fig. 6

schematic representation of a stick with three telescopic pipe sections.

WAYS FOR CARRYING OUT THE INVENTION

In the following, exemplary embodiments will be illustrated to illustrate the invention described above. It is to be understood that these embodiments are to be considered as illustrative and for the purpose of describing the feasibility of the invention, and not for the purpose of limiting the scope of the invention as defined in the appended claims. Changes and variations of the embodiment, as discussed below, will be apparent to those skilled in the art and also covered by the claims.

In FIG. 1 are two rotated by 90 degrees to each other schematic views of a damping device according to a first preferred embodiment of the invention in unamplified state shown. The damping device 1 has a length L1 in the unstretched state, which corresponds to the distance from the upper end of the head of the fastening means 4 to the lower end of the guide sleeve 10. The pipe sections are not shown in this figure. The illustrated embodiment of the damping device 1 according to the invention has a guide sleeve 10 which is rotatably mounted in a blind hole or an axial central cavity 20 of the lowermost tube section 25 of a pole tube 24 and in which an axle pin 2 engages with its lower free end. Coaxial with the guide sleeve, a spreading device 32 is shown above the guide sleeve, which is a spreading element 3, a in the sections of FIG. 2 visible inner member 33 and an inner cone 5 has. The axle pin 2 is provided at least at its upper end with an external thread and has a head 4 by means of a fastening means 4, preferably a screw, fixed axially. The head 4 forms the upper stop for the expansion element 3. The lower stop of the expansion element 3 forms in FIG. 1a a on the axle 2, for example, molded, screwed, placed, clamped or welded center piece 8. Below the middle piece 8 is in FIG. 1 an additional elastic damping element 9, here designed as an elastic O-ring, arranged, which serves the noise damping in the end position of the damped floor 23. In the in FIGS. 1a and 1b shown undamped state of the rod 23, a portion of the axle pin 2 is exposed below the expansion element or the middle piece 8 and elastic ring 9. Subsequently, the compression spring device 35 is arranged in the guide sleeve 10.

The expansion element 3 has at least one, but preferably two opposing axial recesses 6. In this recess 6 engages within the expansion element 3 coaxially arranged inner element 33 with at least one axial rib 7, but preferably with two mutually opposite to the inner member 33 ribs 7 a. In FIG. 1b this recess 6 is not visible because the damping device against the FIG. 1a turned 90 degrees and is in the illustrated embodiment in the expansion element 3 at one of the recess 6 by 90 twisted position no further recess. The spreader is in the representations of FIGS. 1 and 2 in an unexpanded state.

In FIG. 1a is to be seen in the central region 10b of the substantially U-shaped guide sleeve 10 shown in the section elongated hole 12, which forms an upper stop 13 and a lower stop 14. Between these stops 13, 14 is a guide sleeve and at least partially radially engaging in the slot 12 is a the axle pin 2 at its lower end by passing transverse pin 15 is arranged. The transverse pin 15 is located in the representations of FIGS. 1 and 2 , ie at undamped or unattenuated floor 23 at the upper stop 13 of the slot 12 of the guide sleeve 10. On the guide sleeve 10 and the upper portion 10 a is a insert piece 11 is placed or attached. This engages with a region which carries at its lower end at least one self-locking in an undercut of the guide sleeve on its radially inner side serving nose 39, preferably a circumferential nose 39, in the guide sleeve 10 and its upper portion 10 a, which in section from FIG. 2 is recognizable. The axle pin 2 is with its lower end 37 in a receiving element 16, which is formed substantially cup-shaped and is mounted in the guide sleeve 10, added. The receiving element 16 thus forms an intermediate element between the compression spring device 35 and the axle 2, The in FIG. 2a transverse pin 15 shown perpendicular to the axis of the pole S protrudes from the outside inwards first the wall of the guide sleeve 10, then the axle 2 and then the opposite wall of the guide sleeve 10th

In the Figures 1-5 are no pipe sections 25, 26, 27 of the pole shown. The guide sleeve 10 is rotatably supported up to its contact shoulder 22 in the lowermost tube section. The contact shoulder 22 thus provides the upper stop for the upper edge of the lowermost tube section 25. Since compressive forces act on the pressure spring device 35 mounted in the lowermost tube section 25, it is advantageous if the guide sleeve 10 is formed in one piece and thus also the abutment shoulder 22 in the upper one Region 10a of the guide sleeve 10 integrally formed is. But it would also be conceivable that only the insert piece 11 forms the upper stop for the lowermost tube section 25, but then the insert piece 11 should accordingly be strongly attached to the guide sleeve 10.

The compression spring device is in FIGS. 2a and 2b as a series arrangement of three springs, wherein at both axial ends of a pressure coil spring 18 is arranged above and below each an elastomeric spring 17 is formed. Between the elastomeric spring 17 and the pressure coil spring 18, a substantially T-shaped pin 34 is arranged, which partially engages the pressure coil spring 18 and thus prevents penetration of the elastomeric spring 17 into the pressure coil spring 18. The disc-like region of the T-shaped pin defines the distance between the elastomer spring 17 and pressure coil spring 18th

The centerpiece, whose cut in FIGS. 2a and 2b is particularly well recognizable, preferably at its upper end both in the axial direction a circumferential nose 39 and in the radial direction a circumferential projection 40. The circumferential nose 39 serves to stop the middle piece 8 on the underside of the inner cone 5. The indentation of the middle piece resulting from the nose 39 allows the spreading element a certain axial play within narrow limits.

In Figures 3 and 4 an embodiment of the inventive damping device 1 is shown in a compressed position. Compared to the representation of FIG. 1 Here is no longer exposed between Spreizelement 3 and engaging piece 11 section of the axle pin. The elastic ring 9 rests on the engagement piece 11. In addition, it can be seen that the transverse pin 15 is arranged in the compressed position substantially at the lower stop 14 of the elongated hole 12 in the guide sleeve. Only the part of the lower end 37 of the axle pin 2, through which the transverse pin 15 protrudes, which is accommodated in the receiving element 16, prevents the transverse pin 15 from directly contacting the lower stop 14. In the compressed state, the damping device 1 has a length L1 '. which is smaller than the length L1 of the damper device 1 in the unbiased state. Typically, the shortening of the length of the pole from the undamped to the damped state is approximately 5-15 mm, preferably 7-12 mm, more preferably 8-10 mm.

In FIG. 5 FIG. 3 shows three alternative embodiments of damping devices 1 in the unbiased state, wherein the in FIG. 5a has shown damping device 1a no additional damping element 9. The damping device 1b of FIG. 5b missing the center piece 9 and the damping device 1c of FIG. 5c both said elements 8, 9 are missing. Accordingly, the length L2 of the uncompressed damping device 1a of FIG FIG. 5a smaller than the length L1 of the uncompressed damping device 1 of FIG FIG. 1 , The length L3 of the uncompressed damping device 1b of FIG FIG. 5b is again smaller than the length L2 of the uncompressed damping device 1a, and the length L4 of the uncompressed damping device 1c is smaller than the length L3 of the uncompressed damping device 1b.

In FIG. 6 is a schematic view of a stick 23 is shown. The floor 23, is shown here only as an example as a ski pole. As already mentioned above, the floor 23 according to the invention can also be, for example, a trekking, hiking or Nordic walking pole or the like. The illustrated pole tube 24, according to this embodiment, three pipe sections 25, 26, 27, wherein each two adjacent pipe sections 25, 26 and 26, 27 are telescopically relative to each other, resulting in a length adjustment of the stick 23 results. At the lower end of the stick 23 a pole tip 29 is arranged, which is optionally überschirmt of a stick plate 30. However, in the case of a Nordic Walking or walking stick, the pole tip 29 may well be designed as a buffer with or without spikes.

According to the presentation of FIG. 6 For example, it is preferred that the lowermost tubular section 25 has the smallest diameter of the three illustrated tubular sections 25, 26, 27 forming the pole tube 24. It is also possible that the pole tube 24 consists of more than three pipe sections. Preferably, the diameter of the uppermost pipe section 27 arranged immediately below the pole grip 28 is the pipe section with the largest diameter. But it is also conceivable that the second lowest pipe section 26 has a larger diameter than the uppermost pipe section 27. This is, for example, to achieve an improved Swing behavior of the stick 23 conceivable. For the smallest possible packing size for telescopic sticks, however, it is advantageous if the tube sections, seen from top to bottom, have decreasing diameters. Each pipe section 25, 26, 27 may also have different diameters in itself. Typically, the lower portion of a pipe section has a smaller diameter than the upper portion of the same pipe section. The pole grip 28 may optionally have a hand strap 31 attached thereto or a coupling mechanism for an attachable hand strap 31. Normally, pole tubes 23 are surrounded at the transition areas between two tube sections 25, 26 and 26, 27 by a collar. According to the invention, the damping device 1 is arranged at such a floor between the pipe sections indicated by the reference numerals 25 and 26, ie, the guide sleeve 10 is inserted at the upper end of the lowermost pipe section 25.

LIST OF REFERENCE NUMBERS

1

Damping device, shock absorber

1a

Damping device without 9

1b

Damping device without 8

1c

Damping device without 8 and 9

2

axle pin

3

spreader

4

Head of 2

5

inner cone

6

axial recess of 3

7

axial rib of 5

8th

centerpiece

9

additional damping element, rubber ring

10

guide sleeve

10a

upper range of 10

10b

middle range of 10

10c

lower range of 10

11

insert piece

12

axial slot of 10

13

first stop of 12

14

second stop of 12

15

cross pin

16

Receiving element for 2

17

elastomer spring

18

Coil compression spring

19

Opening in 2

20

axial cavity, blind hole in 10

21

axial recess, groove

22

Stop, contact shoulder in 10a

23

floor

24

stock pipe

25

bottom pipe section

26

second bottom or middle pipe section

27

third lowest or highest pipe section

28

stick handle

29

stock tip

30

stock plate

31

hand strap

32

spreading

33

inner element

34

spigot

35

Spring device

36

Lead of 34

37

Nose of 11

38

lower end of 2

39

circumferential nose of 8

40

circumferential lead of 8

L1

uncompressed length of 1

L1 '

compressed length of 1

L2

uncompressed length of 1 a

L3

uncompressed length of 1b

L4

uncompressed length of 1c

S

pole axis

Claims (14)

1. A pole (23), for example a trekking, ski, hiking or Nordic walking pole, having at least three telescopic tube portions of a pole shaft (24) provided with a pole grip (28) and pole tip (29), wherein in each case two adjacent tube portions can be adjusted relative to one another, having a damping device (1) with a guide sleeve (10) retained in a rotationally fixed manner in a first tube portion and with a compression-spring device (35), wherein an axial pin (2) secured axially in a second tube portion is guided in the guide sleeve (10), wherein
   the first tube portion is the lowermost tube portion (25) and the second tube portion is the second-from-the-bottom tube portion (26) characterized in that the entire compression-spring device (35) is mounted in the guide sleeve (10).
2. The pole (23) as claimed in claim 1, characterized in that the lowermost tube portion (25) has a smaller diameter than the second-from-the-bottom tube portion (26), wherein preferably the second-from-the-bottom tube portion (26) has a smaller diameter than the third-from-the-bottom tube portion (27) adjacent to it.
3. The pole (23) as claimed in one of the preceding claims, characterized in that the guide sleeve (10) at least has a bottom region (10c) and a central region (10b) mounted in the lowermost tube portion (25).
4. The pole (23) as claimed in one of the preceding claims, characterized in that the compression-spring device (35) has at least one helical compression spring (18) and/or at least one elastomer spring (17).
5. The pole (23) as claimed in one of the preceding claims, characterized in that the compression-spring device (35) has, in a series arrangement, a helical compression spring (18) and an elastomer spring (17) at each of the two axial ends thereof.
6. The pole (23) as claimed in one of the preceding claims, characterized in that the pole shaft (24) has three or four tube portions (25, 26, 27).
7. The pole (23) as claimed in one of the preceding claims, characterized in that a central piece (8) is arranged on the axial pin (2) coaxially above the guide sleeve (10).
8. The pole (23) as claimed in one of the preceding claims, characterized in that, above the guide sleeve (10), an additional damping element (9), preferably an elastic ring, in particular preferably a rubber ring, is arranged on the axial pin (2) coaxially in relation to the compression-spring device (35).
9. The pole (23) as claimed in one of the preceding claims, characterized in that the guide sleeve (10), preferably between a top region (10a) and a bottom region (10b), has a stop (22), preferably an encircling shoulder, against which the lowermost tube portion (25) butts by way of its top edge.
10. The pole (23) as claimed in one of the preceding claims, characterized in that the guide sleeve (10), preferably in its central region (10b), has at least one axial slot (12), preferably two mutually opposite slots (12), wherein a transverse pin (15) is arranged perpendicularly to the pole axis (S) in the guide sleeve (10), preferably above the compression-spring device (35) and at least in part in the slot (12), in which case it can be moved axially in the slot (12) between a top stop (13) and a bottom stop (14), wherein preferably the transverse pin (15) projects through the bottom end of the axial pin (2).
11. The pole (23) as claimed in one of the preceding claims, characterized in that the lowermost tube portion (25) has a diameter of 10-14 mm, preferably 12 mm, in that the second-from-the-bottom tube portion (26) has a diameter of 12-16 mm, preferably 14 mm, and in that the third-from-the-bottom tube portion has a diameter of 14-18 mm, preferably 16 mm, wherein preferably all the tube portions (25, 26, 27) are of equal length.
12. The pole (23) as claimed in one of the preceding claims, characterized in that at least one spreading device (32) is arranged on the axial pin (2), coaxially with the compression-spring device (35) and preferably above the compression-spring device (35), wherein preferably the lowermost tube portion (25), which has the damping device (1), can be clamped axially in the second-from-the-bottom tube portion (26) by way of the spreading device (32), and in that the spreading device (32) has a spreading element (3), which can be forced apart radially and is provided with an inner cone (5), and an inner element (33), which is provided with an outer cone running in the opposite direction and is accommodated such that it can be displaced axially in the spreading element (3), and an axially directed adjusting screw (4), which is retained in a rotationally fixed manner on the lowermost tube portion (25) and is operatively connected to an internally threaded bore in the inner element (33), wherein the inner cone (5) of the spreading element (3) runs such that it opens in the direction of the lowermost tube portion, and that the spreading element (3) is retained such that it can be moved axially, preferably within narrow limits, between a bottom stop on an inner tube, preferably on the guide sleeve (10), in particular preferably on an insert piece (11) anchored in the guide sleeve (10) at one end, or on a central piece (8) arranged coaxially above the guide sleeve, and a top stop at the free end of the adjusting screw (4).
13. The pole (23) as claimed in either of claims 11 and 12, characterized in that the inner cone (5) is formed in one or two parts and has at least one axial slot, which is open at the top and bottom, passing through it.
14. The pole (23) as claimed in claim 4, characterized in that the compression-spring device (35) has at least one stub (34) which projects into one end of the helical compression spring (18) and has a protrusion (36).

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