EP4463033A1 - Puffer und stock mit derartigem puffer - Google Patents
Puffer und stock mit derartigem pufferInfo
- Publication number
- EP4463033A1 EP4463033A1 EP22835281.1A EP22835281A EP4463033A1 EP 4463033 A1 EP4463033 A1 EP 4463033A1 EP 22835281 A EP22835281 A EP 22835281A EP 4463033 A1 EP4463033 A1 EP 4463033A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- buffer
- intermediate piece
- sole
- stick
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
- B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
- B65D21/0201—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together side-by-side
- B65D21/0206—Separate rigid or semi-rigid trays or cups joined together, e.g. separate trays connected by single foil closure or crimped together
Definitions
- the present invention relates to a pole for use as a piece of sports equipment, in particular as a Nordic walking pole, a buffer for such a Nordic walking pole, and associated assembly and conversion methods.
- a Nordic walking stick is known from WO 2008/037098, which comprises a stick body, at the lower end of which a tip body and a buffer are provided.
- the buffer is mounted in a lockable, displaceable manner in an axial direction relative to the pole body.
- the buffer can be fixed in at least two axially different positions with respect to the pole body via a positive connection.
- the tip body and/or the lowest section of the pole body are arranged to pass through a central opening of the buffer and the buffer can be fixed in relation to the pole body in this central opening in an axial direction.
- WO 2011/128231 A1 discloses a buffer that can be adjusted in height by means of a locking lever and that can hide the tip when not in use.
- WO 2018/007135 describes a Nordic walking pole with a pole tube, at the lower end of which an attachment is provided, to which a buffer made of rubber-elastic material is detachably attached via a bayonet catch.
- the buffer according to the invention has an insert made of hard material in a central recess. To connect the buffer to the pole, this insert is attached to the attachment.
- DE 10 2010 022 042 A1 and EP 1 814 419 disclose a replaceable rubber buffer in connection with an extendable tip body. In both cases, however, the rubber buffer is simply placed axially on a lower end of an attachment at the end of the pole by friction.
- US5301704 discloses a cane with an enlarged base having a convex curved underside that acts as a small seesaw. One or two rows of spikes extend downward from the curved surface to penetrate and grip icy surfaces.
- An elastomeric elastic pad can be attached to the curved underside of the foot section to adapt the cane for use on normal walking surfaces such as carpets, hard floors and outdoor walkways. The pad features a series of sockets that fit over the spikes to hold the pad to the footboard.
- the arcuate surface contour of the foot portion is advantageous in that it allows the spikes or resilient pad to have a non-slip, swinging motion throughout the walking stride, i.e. while the person is using the stick to partially support their own weight during forward movement of the body maintain contact with the walking surface.
- CN210382930U discloses a telescopic hiking pole tip.
- the tip consists of a stick tip body, a sleeve and a sole.
- the sole is clamped at the bottom of the sleeve; the stick tip main body is positioned within the sleeve; two mounting parts are arranged on one side of the upper part of the sleeve; a sliding piece is rotatably arranged between the mounting parts by a pin; the lower end of the slide piece is of a cam structure formed by cutting a plane from a cylindrical object.
- the cam structure at the bottom of the plunger piece can rotate in the sleeve; an arcuate groove mating with the pusher piece is formed in one side of the stick tip main body; an arcuate groove corresponding to the plunger piece is formed in one side of the stick tip main body; a metal cane tip is fixedly connected to the lower portion of the cane tip main body, the lower end of the metal cane tip extends to the outside of a sole of a foot, a positioning groove is formed in the side surface of the metal cane tip, the positioning groove has a strip-like structure, a second pin is at the bottom of the sleeve and the second pin penetrates through the positioning groove.
- the telescopic stick has the advantage that only the tip needs to be pulled out and pulled back for different road surfaces, and there is no need to take off the sole.
- a disadvantage of the sticks from the prior art is the insecure connection of the exchange buffer to the stick.
- the models with a purely frictional connection have the disadvantage that the buffer can be twisted at the end of the pole, which is particularly problematic with asymmetrical buffers, since a specific one is required for use rotational position on the stick in relation to the grip is necessary. Furthermore, in such systems, the buffers cannot be replaced without the aid of tools. It is also disadvantageous that exchangeable areas of the buffers usually contain a lot of material and are therefore ecologically questionable because too much material that would still be functional per se is exchanged when they are exchanged.
- the object of the present invention is accordingly a buffer according to claim 1 or a pole with such a buffer and a method for installing, renewing or modifying such a buffer.
- Such a buffer for a pole in particular for a trekking, walking or Nordic walking pole, has at its upper end means for detachable attachment to a pole tube when used as intended, in particular in the form of a recess, and at its lower end Rolling surface, wherein the rolling surface is preferably essentially flat or only slightly convexly curved in a transverse direction with respect to rolling, but is convexly curved in a longitudinal direction perpendicular thereto in such a way that during the movement of the user of the stick it forms a rolling surface during the push-off movement in one running direction forms with the stick on a base.
- such a buffer is designed in three parts in the axial direction.
- an upper buffer section which is made of a rubber elastic material, i. H. is formed exclusively from such a material and which in particular provides the frictional connection provided for attachment to the lower end of the tube via the corresponding recess.
- an intermediate piece in between in the axial direction that does not consist of a rubber-elastic material but of a hard material, typically of a thermoplastic material, which can be processed in an injection molding process.
- a hard material typically of a thermoplastic material
- Possible materials are, for example, polyethylene (PE), polypropylene (PP), polyoxymethylene (POM), polycarbonate (PC), polyamide (PA), polyurethane (PU) or mixtures thereof or similar materials reinforced with glass fibers and/or carbon fibers could be.
- the intermediate piece is non-detachably attached to the upper buffer section when used as intended, and the buffer sole is detachably and interchangeably attached to the intermediate piece.
- the buffer sole consists of the rubber-elastic material and has no additional, non-detachably connected inserts or the like made of a hard material, such as the material from which the intermediate piece is made. Such a buffer sole can thus be easily replaced with a minimal exchange of material, and can also be easily recycled.
- the buffer sole can have a through-opening for a tip of the stick, but the buffer sole can also preferably be free of such a through-opening for a tip of the stick, i. H. it is preferably not a buffer that can be switched between a position with a rolling surface and a position with an exposed pole tip.
- a buffer that can be releasably attached to a stick with a tip, typically a hard metal tip, with positive and/or frictional locking being provided through the receiving opening in the upper buffer section made of a rubber-elastic material, optionally combined with stop surfaces in an additional opening in the adapter (compare below) for the tip of the pole.
- the soleplate can be replaced or exchanged without the use of tools, and between these two elements there is only a single intermediate piece made of a hard material, which provides the interface for interchangeability of the soleplate with good attachment to the upper portion of the buffer, and if necessary, the controlled one Storage of the tip of the stick in a blind hole.
- a first preferred embodiment of this buffer is characterized in that the rubber-elastic material is a vulcanized natural and/or synthetic rubber, particularly preferably with a hardness of 20 to 80 Shore A, preferably 50-70 Shore A, preferably in the range of 59- 62 Shore A.
- Possible materials are, in particular, diene rubbers, or in particular systems such as TPE including TPU or, above all, NBR (butadiene-acrylonitrile rubber), EPDM (ethylene-propylene-diene rubber), SBR (styrene-butadiene rubber). ), butyl rubber, isoprene rubber (IR), chloroprene rubber (CR), natural rubber (NR), elastic silicones, or a combination or mixture thereof.
- the mass of the buffer sole and the upper buffer section is made of a rubber-elastic plastic material.
- a rubber-elastic plastic material These are, for example, materials that are customary in the field of tire manufacture, ie vulcanized synthetic rubbers are possible, for example.
- the elements can be produced in a prototype process.
- Buffer sole and upper buffer section can be made of the same or different rubber-elastic materials or material mixtures exist.
- the upper buffer section is typically connected to the intermediate piece by means of an adhesive connection, but it is also possible to produce these two elements together in a two-component injection molding process.
- the rolling surface is preferably designed asymmetrically in that it is raised at the front end in the running direction and by the rear end in the running direction essentially forming a point.
- the rolling surface is essentially flat or only slightly convexly curved in a transverse direction with respect to the rolling (possibly with trough-shaped indentations or depressions or with a profile), but convexly curved in a longitudinal direction perpendicular thereto such that it forms a rolling surface during the push-off movement with the stick on a base during the movement of the user of the stick.
- the buffer sole preferably has a fastening rib or fastening groove on its side arranged towards the intermediate piece, and the intermediate piece has a corresponding fastening groove or fastening rib on its side facing the buffer sole.
- Fastening rib or fastening groove of the buffer sole and corresponding fastening groove or fastening rib of the intermediate piece are preferably designed as a longitudinal profile, e.g. as a dovetail profile (trapezoidal groove with a further groove opening as the groove bottom) or fir tree profile, and run along a direction in the plane spanned by the axial direction and the longitudinal direction below Formation of a positive and/or non-positive connection.
- the buffer sole is preferably essentially in the running direction (possibly with an inclination in the Vertical) pushed onto the intermediate piece up to a stop position, wherein the stop position is preferably given by a rear stop surface on the intermediate piece and a front stop surface on the buffer sole. These stop surfaces preferably run essentially perpendicularly to the direction in which the buffer sole is pushed on.
- connection for securing purposes, which prevents the stop position from being left without the application of special force.
- This connection is preferably provided solely by the mutual engagement of material from the intermediate piece and the buffer sole, preferably in the form of locking elements on the intermediate piece and the buffer sole.
- the intermediate piece preferably has a fastening section which projects at least partially into the upper buffer section on the inside and which preferably has a cylindrical outer surface which is further preferably terminated by an upper contact surface for a lower contact surface of the upper buffer section.
- the opening for the lower end of the pole and the tip of the pole can be designed for optimal attachment, in the upper area for the opening formed by the rubber-elastic material of the upper buffer section, and in the lower area by the hard material of the intermediate piece, resulting in a clean attachment is given under axial load.
- an upwardly open recess can be provided in this fastening section, which continues the recess in the upper buffer section for the pole tube, wherein this recess can preferably have at least one inner contour for controlled, preferably non-rotating contact with a pole tip geometry.
- Two different inner contours of this type can preferably be provided in order to be able to accommodate different pole tips.
- the buffer sole is pushed onto the intermediate piece up to a stop in a direction in the running direction, preferably in a direction at an angle of 30-85°, preferably 45-75° to the axial direction.
- a releasable form-fitting connection is more preferably exclusively by engagement constructed from the contours of the intermediate piece and buffer sole.
- additional fastening means such as transverse pins, screws or the like are preferably dispensed with.
- the present invention further relates to a buffer sole for a buffer as described above.
- the buffer sole normally consists of a rubber-elastic material and can have the further structural features relating to the buffer sole, as described above in connection with the exemplary embodiments of the entire buffer.
- the buffer sole is preferably designed in such a way that it can be pushed onto the intermediate piece in the direction of travel, without rotary movement, preferably along a direction in the plane spanned by the axial direction and the longitudinal direction, forming a positive and/or non-positive connection.
- Additional separate fastening elements such as (cross) pins or screws can be used, but preferably no further separate additional fastening elements are used, in particular no (cross) pins or screws for fastening or the like.
- the buffer sole preferably has a fastening rib or fastening groove on its side arranged towards the intermediate piece, and the intermediate piece has a corresponding fastening groove or fastening rib on its side facing the buffer sole.
- Fastening rib or fastening groove of the buffer sole and corresponding fastening groove or fastening rib of the intermediate piece are preferably designed as a longitudinal profile, e.g. as a dovetail profile (trapezoidal groove with a further groove opening as the groove bottom) or fir tree profile, and run along a direction in the plane spanned by the axial direction and the longitudinal direction, i.e. Running direction with the formation of a form-fitting and/or non-positive connection.
- the buffer sole is preferably designed in such a way that it can be pushed onto the intermediate piece up to a stop position essentially in the running direction (possibly with a vertical incline), the stop position preferably being a rear Stop surface is given on the intermediate piece and a front stop surface on the buffer sole. These stop surfaces preferably run essentially perpendicularly to the direction in which the buffer sole is pushed on.
- this connection is provided solely by the mutual engagement of the material of the intermediate piece and the buffer sole, preferably in the form of locking elements on the intermediate piece and buffer sole, these locking elements preferably running in a direction perpendicular to the running direction and perpendicular to the pole axis.
- the cushion sole has an upwardly directed, flared ridge which is intended to engage a corresponding undercut groove in the adapter.
- a form-fitting locking contour is preferably provided on or on this shoulder, which preferably runs in a direction perpendicular to the running direction and perpendicular to the pole axis, e.g. as an upwardly directed, transverse ridge (or groove) which fits into a groove (or ridge) in the intermediate piece in Sliding engages locking.
- the present invention relates to a method for installing, renewing or modifying a buffer as described above, optionally on a pole as described above, characterized in that a buffer sole is pushed onto the intermediate piece attached to the upper buffer section and attached thereto, optionally after Removal of a buffer sole previously attached to it, either worn or different in material and/or structure.
- FIG. 1 shows different views of an exemplary embodiment of the proposed buffer, in a) a side view, in b) a view from behind, in c) a side view with the buffer sole removed, in d) a perspective view obliquely from the front and in e) a perspective top view is shown obliquely behind;
- FIG. 2 shows the section according to AA in FIG. 1 a), wherein in a) the buffer sole is put on and in b) the buffer sole is shown removed and offset downwards;
- Fig. 3 shows the section according to B-B in Fig. 1 b), wherein in a) the buffer sole is put on and in b) the buffer sole is removed and shifted backwards;
- FIG. 4 shows different views of the intermediate piece, a) showing a side view, b) showing a sectional view along A-A in a), c) showing a sectional view along B-B in d) and d) showing a rear view;
- FIG. 5 shows different views of a buffer sole, with a) showing a view from the front, b) showing a side view and c) showing a view from the rear.
- the buffer has an upper buffer section 4, which borders the lowermost tube section 2, and a buffer sole 5, which provides a rolling surface 10 in use. In between there is an intermediate piece 6.
- Upper buffer section 4 and buffer sole 5 consist of a rubber-elastic material, while the intermediate piece 6 consists of a hard material.
- the hard material is a thermoplastic material, namely polyolefin such as PP, PE or polyamide, POM.
- the upper buffer section 4 has a recess 7 in which the lowermost tube section 2 is accommodated with the tip of the stick. Due to the rubber-elastic material and the contact surfaces between the inner surface of the recess, here with longitudinal ribs 8, and the outer surface of the tube section 2, there is a good frictional connection of the buffer on the pole.
- the entire buffer 3 is designed asymmetrically here.
- the rolling surface 10 is pulled up further at a front end 42 at the front (37) than at the rear (38) at the rear end 43, which to a certain extent forms a tip.
- a convex, essentially curved rolling surface 10 which preferably has a profile 9, as shown here.
- this buffer is essentially straight or only slightly convex.
- the upper buffer section 4 has an exposed outer surface 12, and the intermediate piece 6 also has an exposed outer surface 13. These surfaces 12 and 13 merge and form the upper, fixedly connected part of the buffer. In other words, the buffer section 4 and the intermediate piece 6 are fixed to one another connected and cannot be separated from each other when used as intended.
- the buffer section 4 is produced in a primary molding process and the intermediate piece 6 in an injection molding process, these two elements are connected to one another by means of an adhesive connection.
- the buffer sole 5 also has an outer surface 14 which merges smoothly into the outer surface 13 of the intermediate piece, namely all the way round, since the outer surface 13 of the intermediate piece forms an entire axial section of the buffer 3 all around.
- the buffer sole 5 is now releasably attached to the upper part, in particular to the intermediate piece 6 so that it can be displaced.
- a fastening rib 15 in the form of a longitudinal profile, here a dovetail profile, on the buffer sole.
- This fastening rib 15 has two lateral, upwardly widening side surfaces 17 and an upper surface 16.
- Corresponding structures for a sliding connection are provided on the intermediate piece 6 .
- a fastening groove 18, which (compare in particular Fig. 4) has two lateral inner surfaces 20, which also widen upwards, and a bottom 31.
- a dovetail groove which, in its cross-sectional area, corresponds to the fastening rib 15 in the form of a dovetail profile.
- a releasable form-fitting connection is also provided, whereby this is made solely using a material contour on the hard intermediate piece 6 and a corresponding material contour on the rubber-elastic buffer sole 5.
- these elements are formed by the locking projection 24 on the intermediate piece 6 and a corresponding locking recess 26 on the buffer sole 5 .
- the buffer sole 5 are shifted along the shifting direction 44 as shown in FIG. 1c) or in FIG.
- the connection between the form-fitting elements 23-26 must first be overcome, and then the buffer sole 5 can be pushed out along 44 from the fastening groove 18 in the intermediate piece, with the static friction between the rubber-elastic material of the buffer sole 5 and the hard intermediate piece must be overcome.
- the intermediate piece 6 has a fastening section 27 at the top, which is fastened inside the upper buffer section via the corresponding outer surface 36.
- This fastening section 27 has an upper recess 29, which continues the recess 7 in the upper buffer section 4 and, to a certain extent, the bottom of this blind hole provides for the tip of the stick.
- a first inner contour, denoted by the reference numeral 34, is provided for a pole tip on the pole tube, which is symmetrical, i. H. in this case a cylindrical cemented carbide tip of smaller diameter, merging upwards in a flared portion into a subsequent cylindrical portion of the tip.
- a second inner contour indicated by the reference number 35, which is provided for an asymmetrical tip, as can be seen in particular in the sectional view according to FIG. 4c).
- a tip typically has a crescent-shaped hard metal tip, the orientation of which is predetermined relative to the handle, which is also asymmetrical.
- the corresponding contour 35 it can be ensured with such an asymmetric stick that the buffer 3 is fixed to the tip of the stick in a twist-proof manner.
- the hard intermediate piece 6, which forms the bottom of the fastening recess 7, ensures that a sharp tip of the stick is well supported and cannot cause damage in a soft, rubber-elastic material.
- the detailed structure of the buffer sole 5 can be understood in particular with reference to FIG.
- the rolling surface 10 is asymmetrical, has a strong profile 9 even with lateral extensions, and on the opposite side the mentioned fastening rib 15 for engaging in the fastening groove 18 of the intermediate piece 6.
- such a buffer sole does not have hard elements as an interface to the adapter. But what is possible is that spikes are embedded on the rolling surface, as is known, for example, from WO 2006/128312.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH382022 | 2022-01-13 | ||
| PCT/EP2022/085097 WO2023134931A1 (de) | 2022-01-13 | 2022-12-09 | Puffer und stock mit derartigem puffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4463033A1 true EP4463033A1 (de) | 2024-11-20 |
| EP4463033B1 EP4463033B1 (de) | 2026-01-28 |
Family
ID=81842073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22835281.1A Active EP4463033B1 (de) | 2022-01-13 | 2022-12-09 | Puffer und stock mit derartigem puffer |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4463033B1 (de) |
| WO (1) | WO2023134931A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5301704A (en) | 1993-03-18 | 1994-04-12 | Brown E Evangeline | Walking cane usable on slippery and icy surfaces |
| DE10340135B4 (de) | 2003-09-01 | 2005-11-10 | Klaus Blessing | Stock |
| AT8108U1 (de) | 2004-11-08 | 2006-02-15 | Komperdell Sportartikel Gmbh | Stockspitze |
| DE202006017594U1 (de) | 2005-06-03 | 2007-02-22 | Lekisport Ag | Puffer für Trekking- oder Nordic-Walking Stock |
| ATE461636T1 (de) | 2006-09-25 | 2010-04-15 | Lekisport Ag | Nordic walking stock mit gummipuffer |
| DE202007013027U1 (de) | 2007-09-17 | 2007-11-22 | Neubauer, Norbert | Mehrzweckstab oder Mehrzweckstock |
| CH702967A1 (de) * | 2010-04-14 | 2011-10-14 | Lekisport Ag | Nordic-walking-Stock mit Puffer. |
| DE102010022042A1 (de) | 2010-05-26 | 2011-12-01 | Heinz Giljohann | Nordic-Walkingstock mit Gummipuffer + Metallspitze |
| RU2697038C1 (ru) | 2016-07-08 | 2019-08-08 | Лекиспорт Аг | Палка для скандинавской ходьбы, снабженная амортизатором |
| CN210382930U (zh) | 2019-08-02 | 2020-04-24 | 威海澳多碳素运动用品制造有限公司 | 一种伸缩型登山杖仗尖 |
-
2022
- 2022-12-09 WO PCT/EP2022/085097 patent/WO2023134931A1/de not_active Ceased
- 2022-12-09 EP EP22835281.1A patent/EP4463033B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023134931A1 (de) | 2023-07-20 |
| EP4463033B1 (de) | 2026-01-28 |
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