WO2022260548A1

WO2022260548A1 - Assembly for absorption of the shock caused by one-way bearing on the roller-ski wheel

Info

Publication number: WO2022260548A1
Application number: PCT/RS2022/000010
Authority: WO
Inventors: Dragan Milojevic
Original assignee: Dragan Milojevic
Priority date: 2021-06-07
Filing date: 2022-06-06
Publication date: 2022-12-15
Also published as: RS20210712A1; EP4351749A1

Abstract

The assembly for the amortization of the impact of the roller-ski wheel, caused by one-way bearing, generally relates to the field of sports training equipment. More closely, it relates to the field of skates, skis, and rollerblades, and specifically refers to the classic roller-ski. The assembly for absorption of the impact of the roller-ski wheel caused by one-way bearing (I) of the wheel (C) of the roller-ski (A), characterized by the axle (H) of the wheel (C) being rotationably inserted into the body of roller-ski (A), while two discs (G) are fixed on the axle (H) bilaterally and symmetrically relative to the wheel (C), with each disc (G) having the springs (E) bilaterally and symmetrically attached to it with its one end while being attached to the body of roller ski (A) by the bolt (J) with its other end.

Description

ASSEMBLY FOR ABSORPTION OF THE SHOCK CAUSED BY ONE-WAY BEARING ON THE ROLLER-SKI WHEEL

Technical Field

The present invention, in general, relates to the field of sports training equipment. More closely, it relates to the field of skates, skis and rollerblades, and specifically refers to the classic roller-ski.

The technical problem solved by the present invention is how to soften the impact caused by the immediate blockage of the one-way bearing for moving backwards of the classic roller-ski during the kick. The sudden stopping of the wheel turning backwards, and therefore sudden stopping of moving the roller-ski backwards, produces shocks that destroy the athlete's knee as the most burdened joint, and it also makes a drastically different feeling of driving than on snow, where these stoppings are soft and progressive with slipping a few inches back to the final stop, without the effect of impact and provocation of the athlete's knee injury.

Background art

The classic roller-ski technique is practically a walking technique with alternating pushing on the roller-ski as support, whose backward movement is prevented by the one-way bearing blockade. As the activation of the one-way bearings is instantaneous, the alternating block of turning the wheel is reflected as an impact on the most burdened leg joint, the knee. During standard long rides, both in training and competitions, when it is even more intense, countless such "impacts" to the knee lead to serious destruction of the knee, which is counterproductive to the idea of playing sports in general. When riding a ski on snow, there is no such impact because the ski slipping backwards is prevented by a special daub or a scaly structure of the sliding surface, or both techniques, that actually allow a little sliding backwards which gives a feeling of softness and comfort.

The classic roller-ski in use today uses one-way bearings on the back or front wheels to turn the wheels around a fixed axle forward or to block the rotation of these wheels when pushing the roller-ski backwards, which is a constant movement while driving. The roller-ski serves as a support for pushing the other roller-ski forward with alternating repetitions. This is achieved by constructing a fixed connection between the wheel axle and the body of the roller-ski so that the blockage of turning the wheel backwards by the one-way bearing is reflected by the instantaneous stopping of the body of the roller-ski, and this blocked roller-ski can serve as a support for athletes to push the other roller-ski forward.

Disclosure of the Invention

The novelty of the invention is contained in the replacement of the fixed connection between the wheel axle and the body of the roller-ski with a freely rotating connection and with a fixed disk on the wheel axle to which a spring is attached with its one end, and with the other end, the spring is attached to the body of roller-ski. Therefore, due to the blockade of the rotation of the wheels backwards by the one-way bearing, the mentioned spring is strained in the zone of its elasticity.

This construction allows that, at the moment when the one-way bearing lock is activated, instead of completely and instantaneously preventing the rotation of the wheel and axle backwards, the axle together with the wheel and disc rotates backwards and progressively slows its rotation by spring tension, because the connection between the body of the roller-ski and the axle of the wheel is not direct and fixed, but through springs and elastic. This practically eliminates the impact of the blockage of the rotation of the wheel, and thus its transmission to the user's knee joint. This also makes the feeling of the ski rolling more similar to skiing on snow.

Brief Description of Drawings

The invention is described in detail on the example of performing shown in the drawing in which:

Figure 1 is a side view of a roller-ski with its back wheel and spring in a neutral and strained position.

Figure 2 is a cross-sectional view of the invention from above. Best Modes for Carrying Out of the Invention

The presentation of the invention shown in Figures 1 and 2 shows the body of the roller-ski A in the direction of movement B. Into the roller-ski body A, a sliding insert has been put, through which a free rotation of the axle H of the wheel C is allowed inside the roller-ski body A. On such placed axle H of the wheel C into the roller-ski body A, on its both sides symmetrically, discs G are fixed, so that the turning of the axle H is transferred to the rotation of the discs G. On the discs G the springs E are attached by their one end, while their other ends are attached to the roller-ski body A over the bolts J. At the moment when the blockade of the one-way bearing I is activated, the wheel C, the axle H and the discs G turn backwards, because the axle H is rotationally incorporated into the roller-ski body A, but this provokes the straining of the springs E within their elasticity zone until they reach the fully strained position F, which all is a result of the straining force calculations. By straining the springs E, which with their strength and geometry, are progressively blocking the rotation of the wheel C in direction D, until they reach the fully strained position F, which is a progressive process from 0% to 100% of the force engaged, and all of this eliminates the impact of the blockade of turning the wheel C backwards.

Figure 1 clearly shows the connection and position of the spring E and the axle H, as well as the freedom of rotation of the axle H inside the body of the roller-ski A, before and after activation of the blockade, showing the stopping of the rotation of the wheel C which is directly proportional to the elasticity of spring E and its geometry, which represents the element of regulation of the path length L until the final stop.

Figure 2 shows a bilaterally symmetrical construction of the invention, while a one sided construction is possible in which a disk G with a fixed connection to the axle H of the wheel C is placed on one side of the axle El of the wheel C so that the rotation of the axle El is transmitted to the rotation of disk G. On the disc G, the spring E is fixed to one end, while the other end is attached to the body of the roller-ski A over the bolt J.

Claims

1. The assembly for absorption of the impact of the roller-ski wheel caused by one-way bearing (I) of the wheel (C) of the roller-ski (A), characterized by the axle (H) of the wheel (C) being rotationably inserted into the body of roller-ski (A), while two discs (G) are fixed on the axle (H) bilaterally and symmetrically relative to the wheel (C), with each disc (G) having the springs (E) bilaterally and symmetrically attached to it with its one end while being attached to the body of roller ski (A) by the bolt (J) with its other end.

2. The invention according to the patent claim 1, characterized by the disc (G) being unilaterally fixed to the axle (H) of the wheel (C), with the axle (H) being rotationably inserted into the roller-ski body (A), while the spring (E) is unilaterally fixed to the disc (G) with its one end, while its other end is attached to the body of roller ski (A) by the bolt (J).