End buffer and sports stick equipped with an end buffer
Patent Information
- Application Number
- DE202024101329
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2025-07-31
- Estimated Expiration
- 2034-03-31
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
[0001] The invention relates to a terminal buffer according to the preamble of claim 1.
[0002] The invention further relates to a sports stick equipped with such an end buffer.
[0003] Such a buffer is known, for example, as the "Silent Spike Pad Walking," available at https: / / www.leki.com / de / de / Silent-Spike-Pad-Walking / 882320103 on March 13, 2024. This buffer for sports poles, which can be attached to one end of a sports pole, is designed with an underside that faces the ground during normal use, and on which a number of engagement elements protrude above the underside. The engagement elements are thorn-like projections made of a hard material, so-called spikes, embedded in the underside of the buffer.
[0004] The invention is based on the object of specifying a final buffer of the type mentioned at the outset and a pole equipped with such a final buffer, in which a reliable engagement of the or each engagement element with a particularly relatively soft ground is permanently ensured by compensating for wear.
[0005] This object is achieved according to the invention in a terminal buffer of the type mentioned at the outset with the characterizing features of claim 1.
[0006] This object is achieved with a sports stick according to claim 14.
[0007] Because at least one pin part is provided that penetrates the end buffer and protrudes beyond the underside. It is movable toward the underside but is blocked from displacement toward the top by the blocking mechanism of the abutment part. The abutment part is supported on the underside or in the area of the underside, for example, in the base of a recess opening towards the underside, the pin part can be readjusted in the event of wear by moving it toward the underside. Furthermore, the length of an engaging end protruding beyond the underside can be adjusted and thus adapted to the hardness and thus grip of the respective surface.
[0008] Further expedient embodiments of the invention are the subject of the dependent claims.
[0009] In one embodiment, the pin part is designed as a screw. The external thread of the screw forms a component of the locking mechanism.
[0010] In a further development of the aforementioned configuration, the abutment part is designed as a drive-in nut with a threaded sleeve enclosed by the end buffer and into which the screw can be screwed. In this development, the threaded sleeve forms a further component of the locking mechanism and blocks direct axial displacement of the screw. However, by turning the screw, the screw can be displaced in the axial direction.
[0011] In a further development of the aforementioned design, a lock nut is provided that can be screwed onto the drive-in nut from the underside of the end buffer and is locked with the drive-in nut. This prevents the screw from being accidentally turned.
[0012] In a further development of the aforementioned configuration, the abutment part is a screw nut into which the screw can be screwed. In this further development, the internal thread of the screw nut forms another component of the locking mechanism and prevents direct axial displacement of the screw. However, by turning the screw, the screw can be displaced in the axial direction.
[0013] A further development of the screw design involves a washer positioned between the underside and the screw, which has a larger outer diameter than the outer diameter of the nut. This results in a relatively large distribution of the forces introduced into the screw, acting toward the top.
[0014] For further training, or for the aforementioned training, a lock nut is provided that can be screwed onto the screw from the underside of the end buffer and locked with the screw nut. This prevents the screw from being accidentally turned.
[0015] In a further embodiment, the pin part is designed as a pin-shaped bolt.
[0016] In a further development of the aforementioned further embodiment, the abutment part is designed as a locking washer, which is equipped with a number of radially inwardly projecting claws in the central recess, wherein the claws engage with the bolt. In this development, the claws form the locking mechanism and prevent axial displacement of the pin part.
[0017] In the aforementioned embodiments, refinements, and developments, it is expedient to provide a retaining part that is arranged in the upper region and connected to a pin part. This prevents the pin part from entering the pin recess from the upper side.
[0018] In the aforementioned embodiments, refinements, and developments, it is furthermore advantageous to provide several abutment parts with engagement elements, and to arrange at least two abutment parts radially spaced from one another. This results in particularly good engagement of the pin parts with the substrate.
[0019] In the aforementioned design with multiple abutment elements, it is advantageous in a further development for the underside to be convexly curved. This ensures that during a running movement with a sports pole equipped with such a buffer, with an initially relatively steep and then continuously flattening angle of attack to the ground, at least one pin element securely engages the ground throughout the entire running movement.
[0020] In the aforementioned refinement, it is advantageous to provide an equal number of abutment elements on both sides of a longitudinal center plane, each with an equal distance from the longitudinal center plane. This ensures particularly secure engagement of at least one pin element in the substrate.
[0021] In one design of a sports pole, it is expedient for the end buffer to extend radially outward beyond the center axis of the sports pole. This allows the or each pin part to be easily accessible from the top of the end buffer for sliding the or each pin part toward the bottom or for replacement by pulling the or each pin part toward the top.
[0022] Further expedient embodiments and advantages of the invention will become apparent from the following description of an embodiment of the invention.
[0023] The single figure shows an embodiment of the invention in a schematic sectional view.
[0024] The figure shows a pole end 103 of a sports pole 106, such as a Nordic blading pole, a roller ski pole, or a cross-skating pole, which typically involve introducing considerable forces into the ground during the push-off. Attached to the pole end is a buffer 109, preferably made of a soft, elastic material such as rubber. For this purpose, the buffer 109 is formed with a blind-hole-like axle-receiving recess 112 in the region of one edge, in which the pole end 103 is arranged.
[0025] The end buffer 109 extends radially outward from the axle receiving recess 112 relative to the pole end 103 to an outer edge 118 and has a convexly curved underside 115, which, during intended use, faces a subsurface (not shown). Furthermore, the end buffer 109 has an upper side 121 opposite the underside 115.
[0026] From the figure, it can be seen that a number of continuous pin recesses 124 extend between the upper side 121 and the lower side 115, which are expediently aligned approximately at right angles to the lower side 115. Arranged in each pin recess 124 is a pin part 127, which protrudes beyond the lower side 115 with an engaging end 133. Each engaging end 133 engages with an abutment part 130, which is larger in circumference than the cross-section of the engaging end 133 and, in the arrangement shown, bears against the lower side 115.
[0027] A blocking mechanism is formed between the abutment part 130 and the pin part 127, which blocks at least one movement of the pin part 127 away from the bottom side 115 toward the top side 121. As a result, the pin part 127 is blocked from moving away from the bottom side 115 toward the top side 121 when the end buffer 109 is pressed onto a substrate.
[0028] The locking mechanism is further configured such that movement of the pin portion 127 toward the underside 115 is permitted. This allows the pin portion 127 to be readjusted in the event of wear by shortening the engaging end 133 such that it can be displaced toward the underside 115 with a corresponding lengthening of the engaging end 133. It can also be adapted to the hardness and thus grip of the ground such that a relatively short length of the engaging end can be set for a relatively hard and rough ground such as an asphalt surface, and a relatively long length of the engaging end can be set for a relatively soft ground such as a field path or forest path.
[0029] Each pin part 127 is expediently connected to a holding part at a head end opposite the engaging end 133, the holding part being larger in circumference than the cross-section of the pin part 127. This ensures that a pin part 127 can only be displaced into the pin recess 124 until the holding part connected to it rests against the upper side 121 of the end buffer 109.
[0030] Furthermore, each pin part 127 expediently has a holding part 136 arranged in the region of the upper side 121 and connected to a pin part 127. The holding part 136 has a larger cross-section than the pin part 127, thus ensuring that the pin part 127 is always accessible from the upper side 121 for relatively easy replacement. QUOTES CONTAINED IN THE DESCRIPTION
[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited non-patent literature
[0000] Silent Spike Pad Walking“, available at https: / / www.leki.com / de / de / Silent-Spike-Pad-Walking / 882320103 on March 13, 2024
[0003]
Claims
[1] End buffer for sports stick (106), which can be attached to one end of a sports stick (106), wherein the end buffer (109) is formed with an underside (115) facing a ground during intended use, and wherein at least one engagement element (133) is present on the underside (115) which projects beyond the underside (115), characterized bythat a pin part (127) is provided which is arranged in a pin recess (124) extending between the underside (115) and an upper side (121) of the end buffer (109) opposite the underside (115) and is displaceable in the pin recess (124), that at least one abutment part (130) is provided which bears with a bearing surface against the underside (115) or rests in the region of the underside (115) and into which the pin part (127) engages, and that a blocking mechanism is provided which blocks movement of the pin part (127) away from the underside (115) in the direction of the upper side (121). [2] Termination buffer according to claim 1, characterized by that the pin part (127) is designed as a screw. [3] Termination buffer according to claim 2, characterized bythat the abutment part (130) is designed as a drive-in nut having a threaded sleeve which is enclosed by the end buffer (109) and into which the screw can be screwed. [4] Termination buffer according to claim 3, characterized by that a lock nut is provided which can be screwed onto the drive-in nut from the underside (115) of the end buffer (109) and is locked with the drive-in nut. [5] Termination buffer according to claim 2, characterized by that the abutment part (130) is a screw nut into which the screw can be screwed. [6] Termination buffer according to claim 5, characterized by that there is a washer which is arranged between the underside (115) and the screw and which has a larger outer diameter than the outer diameter of the screw nut. [7] A terminal buffer according to claim 5 or claim 6, characterized bythat a lock nut is present which can be screwed onto the screw from the underside (115) of the end buffer (109) and is locked with the screw nut. [8] Termination buffer according to claim 1, characterized by that the pin part (127) is designed as a pin-shaped bolt. [9] Termination buffer according to claim 8, characterized by that the abutment part (130) is designed as a locking washer which is provided in the central recess with a number of claw tongues projecting radially inwards, wherein the claw tongues engage with the bolt. [10] Termination buffer according to one of the preceding claims, characterized by that a holding part (136) is provided which is arranged in the region of the upper side (121) and is connected to a pin part (127). [11] Termination buffer according to one of the preceding claims, characterized bythat several abutment parts (130) with engagement elements (133) are present and that at least two abutment parts (130) are arranged spaced apart from one another in the radial direction. [12] Termination buffer according to claim 11, characterized by that the underside (115) is convexly curved. [13] Termination buffer according to claim 12, characterized by that on both sides of a longitudinal center plane there is an equal number of abutment parts (130) with a pairwise equal distance from the longitudinal center plane. [14] Sports stick equipped with a buffer according to one of claims 1 to 13. [15] Sports stick according to claim 14, characterized by that the end buffer (109) extends radially outwards over the central axis of the sports stick (106).