RU2327500C2 - Skis with brush brakes of reverse sliding - Google Patents

Abstract

FIELD: sport.

SUBSTANCE: skis with brush brakes of reverse sliding are referred to sportswear, tourist and hunting outfit. Skis consist of body, brush brakes and guiding chamfer. Holding cups are glued into guiding chamfers at angle from 20° to 40°. Holding cups contain brush brake boxes provided with brushes. Recesses for brush brakes removal are available in chamfers.

EFFECT: brakes ensure moving under sufficient hill climbing ability on loose and hard snow and allow for using plastics as sliding surface with near-to-zero friction factor.

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Description

Skis with brush-back brakes are sports, hiking and hunting equipment.

Known US patent No. 414850, class. А63С 5/04, 1979. Skis [1] have a transverse slot, in the grooves of which bars with brush elements are inserted and held. The whole structure is located on the ski sliding plane, the brushes located across the movement have a large contact area with snow, which leads to a significant increase in friction when moving forward, and therefore, additional physical load for the user. The significant dimensions of the bars with brushes and transverse slots lead to a decrease in the strength characteristics of the ski case, which works to bend from the toe to the heel, and additional hardening of the ski case leads to unjustified weighting of sports equipment, which makes the design not industrially applicable.

In skiing [2] there are no movable joints. The holder glasses (4) are glued into the guide groove (3), which does not reduce the strength characteristics of the ski case (1). In this design, only brushes are movable, the rigidity and quantity of which determines the degree of adhesion to the snow surface. Brush brake clips (5) are easily removed from the holder glasses (4). The brushes (6) located in the guide groove (3), one after another, give minimal resistance when the ski moves forward.

Known USSR patent No. 1423130, class. А63С 7/10, 1988. The ski construction has grooves (2) on the sliding plane with a pivotally fixed plate (3) connected to the elastic element (4). When the ski moves forward, the plate (2) does not interfere with the movement, and when rolling, the elastic element (4) pushes the plate, which is caught by a sharp edge on the surface of the snow. The disadvantage of the proposed design is the use of a swivel and an elastic element. The elasticity of the material of the elastic element (4) cannot be calculated, because with temperature differences, the physical properties of materials change. The sliding plane of the ski heats up during heavy traffic, snow particles falling into the hinge of the plate (3) melt, and freeze during further operation, which leads to failure of the hinge of the plate. The use of all kinds of devices on the ski sliding plane leads to a decrease in the structural strength and a decrease in the stability of the ski on the snow surface, to a deterioration of the slip. The grooves (2) are not a niche for drowning the brush (7), because have a different technical meaning - the retention of the elastic element.

An object of the present invention is to provide user-friendly skis. The use of brush brakes for reverse sliding allows the use of plastics with a friction coefficient close to zero, unpretentious to changes in temperature and humidity of snow, without the use of ointments.

The problem is solved in that skis with brush-back brakes contain a housing, brush brakes, a guide chute, holder cups are glued in the guide chutes at an angle of 20 to 40 °, in which there are brush brackets with brushes, and niches for drowning brush brakes are available in gutters.

Figure 1 shows a side section of a section of the ski along the guide groove. Figure 2 presents a view of a hunting ski from the side of the slip plane.

The skis according to the invention comprise a ski casing 1, an attachment pad 2, a guide chute 3, a holding cup 4, a brush brake clip 5, a brush 6, a niche for drowning the brush 7, a plastic coating on the sliding plane 8.

The operation of the reverse sliding brush brake consists in the fact that when the ski moves forward, the brush (6) enters the niche of drowning the brush (7) without interfering with the movement. When the ski slides backwards, the brush (6) abuts against the snow surface and, pushing the bristles of the brush (6) apart, reliably keeps the skis from sliding backwards. The coefficient of adhesion of the ski to the snow surface can be adjusted by increasing the number or stiffness of the brush brakes.

The operating efficiency of the brushes (6) depends on the angle of location and gluing the holder glass (4) into the ski body (1). For cross-country skiing that runs along the track and hard snow, the angle of attack is 20 °, and for tourist and hunting skis it is advisable to apply an angle of attack of up to 40 ° relative to the surface of the snow cover. In loose snow, the bristles of the brush move apart at a large angle and increase the area of impact on the surface of the snow.

The maximum weight reduction of the brake device, ease of use will ensure widespread use in the industrial manufacture of skis for various purposes.

Claims (1)

Skis with reverse brush brakes containing a housing, brush brakes, a guide chute, characterized in that cup holders are glued in the guide chutes at an angle of 20 to 40 °, in which there are brush brackets with brushes and recesses for drowning the brush brakes are available in gutters.

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