FI95112B - Anti-skid protection - Google Patents

Abstract

The invention relates to an anti-skid protection, the road surface grip of which is achieved by the inclination of the anti-skip protection during braking or cornering, and the outer covering 3 of the tip part 1 of the anti skid protection involved in gripping forms a cone narrowing towards the fitting flange 4. <IMAGE>

Description

95112

Non-slip

A major disadvantage of vehicle winter tire anti-slip is the intense wear of bare snow-free or ice-free roads, mainly due to the rolling impact of the protrusion of the tip of a conventional carbide pin on the road surface, which grinds the road surface rock under the impact energy. This has led to a radical goal of lightening the carbide studs, but even when lightened, the impact and surface pressure caused by the tip of a conventional pin is too high for the reasonable durability of the road aggregate.

The slip barrier with a nearly planar permanent tip operating with a slight and even negative free protrusion according to the present invention reduces the above-mentioned disadvantages and is based on a solution whose main features are set out in the claim.

The invention will be explained in more detail below with reference to the accompanying drawings, of which

Figure 1 shows a non-slip barrier according to the invention mounted on the tread of a vehicle winter tire so that the non-slip barrier has a slight free protrusion x,

Figure 2 shows the same anti-slip device in rolling against an ice-free hard road surface,

Figure 3 shows the same anti-slip on the tread of a nearly worn winter tire rolling against an icy hard road surface,

Figure 4 shows the anti-slip device of Figure 1 in rolling against a road surface covered by thin ice,

Fig. 5 shows the anti-slip device of Fig. 1 adhering to an ice-covered road surface as the anti-slip device tilts due to braking, acceleration or horizontal force on the tip of the anti-slip device due to braking, and Figs.

2 95112

The anti-slip device according to the invention is particularly characterized in that suomal. the anti-slip device known from patent no. 89688 is applied in such a way that the tip part 1 of the anti-slip device (Fig. 1), which remains flat or almost planar in its tip area 2 during driving, forms a cone tapering towards the anti-slip mounting flange 4 of its outer shell 3 with a cone angle = a. at the junction of the outer surface 3 of the part and the tip plane 2 at an angle β of less than 90 degrees, i.e. the so-called positive chest angle fi2 = a, which activates the anti-slip tilt shown in Fig. 5 at the beginning of the anti-slip tilt. This activation enhances the adhesion of the anti-slip device to the road surface, especially with a thin so-called on black ice, where the depression of the anti-slip on a slippery road surface when rolling is small due to the thin layer of ice. In Figure 1, the anti-slip device is mounted on the ring so that the free protrusion x is small. The free protrusion x can also be e.g. = 0 without impeding the proper operation of the anti-slip device.

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Figure 2 shows the anti-slip in rolling against a bare ice-free road surface. Mainly due to the elasticity z of the tread rubber 5 due to the tire load, the anti-slip device is compressed on its flange 4 against the rubber body of the tire with a force P1 and at the same time against the road surface 6 with a force P1 which causes a surface pressure p1. The level surface 2 maintains the anti-slip in its basic position perpendicular to the road surface 6, thus maintaining the stability of the position perpendicular to the anti-slip road surface depending on the size of the planar tip 2 of the anti-slip. As the anti-slip gradually wears over the tread of the tire (Figure 3), the length of the anti-slip shortens, which would mean increasing stability against the tilt of the anti-slip, e.g. in braking, unless the diameter of the planar tip 2 of the anti-slip decreases. However, the conicity of the tip portion 1 of the anti-slip device causes the diameter of the tip member 2 to be reduced to a shorter extent during the anti-slip device, while maintaining the appropriate tilt sensitivity important for the operation of the anti-slip device by reducing stability. Thus, the conicity 95112 3 also benefits from the function of the anti-slip device according to the invention in the event of a risk of slipping or slipping.

Figure 4 shows a non-slip barrier according to the invention in rolling against icy road surface 8, whereby the tip level 2 of the non-slip bar slightly presses into the ice surface 8 due to the compressive force P2, while remaining rolling perpendicular to road surface 8 and 6 due to tip level 2. Figure 5 shows braking and partial slip. The anti-slip device tilts due to the anti-slip force P3 applied to the protruding edge 9 of its tip 2. When the inclination has reached the size of the cone angle α, as the situation is plotted in Fig. 5, the chest angle & 2 (marked in Fig. 1) becomes zero, and as the inclination increases to negative. At this point, the road surface (8 and 6) in itself activates the tilt of the anti-slip suitably during braking and the protruding edge 9 of the anti-slip is pressed into the ice 8, creating a grip. When said ice surface 8 is thin (so-called black ice), the tip 9b of the anti-slip is pressed through the ice against the hard surface 6 of the durable coating, enhancing braking. The same phenomena also occur when accelerating and cornering.

Figures 6 ... 12 show various' non-slip solutions according to the invention. The anti-slip devices of Figures 6 and 7 are as shown in Figures 1 to 5 and are made entirely of a suitable hard material. In the anti-slip device, Fig. 6, the tip plane 2 is lightened by a bottom hole 10 to maintain planarity in rolling, and in Fig. 7 the lightening is done. as a hole 11 passing through the anti-slip device. Fig. 8 shows a hard conical tip 12 connected to the flange body 13 by various known methods. Fig. 9 shows a hard wear-resistant tip part 14 connected to a plastic body, extrusion die or the like 15, as well as Fig. 10 with a mounting flange. has a convex top surface 16 mainly to shift the center of inclination if necessary and to control other properties of the rubber. Figure 11 shows the anti-slip

Claims (1)

95112, the conical part 17 is connected to the sleeve-like metal body 18 by various possible methods, and Fig. 12 shows mainly a hot-pressed and hardened product with reliefs 19 and 20 at both ends of a non-slip. The invention is not limited to the application examples presented above, but may vary considerably in its details without still falling outside the scope of the invention. A locking nipple non-slip to be mounted on a tread in a conventional manner in the tread of vehicle tires, characterized in a combination in which the tip (2) of the sliding flange (4) is approximately equal to or somewhat smaller than the sliding flange of the anti-slip flange (4) (8) occurs when the edge (9) of the anti-slip tip (2) protrudes from the tire surface to its initial position (Fig. 4) more when the anti-slip tilt (Fig. 5), e.g. when braking under external force (Pj), the protruding edge (9) of the tip generates a sliding direction against a wide and deeper starting surface of the anti-slip surface on an icy road surface, and whose anti-slip tip portion (1), which remains flat or nearly planar in its tip region (2) when running, forms a cone tapering towards its anti-slip mounting flange (4). Il · 5 95112 Med en monteringsfläns försett slirskydd som inmonteras i ett pä sedvanligt sätt prefabricerat bottenhai i fordons slitbana, kännetecknat av en combination vari spetsen (2) pa en spetsdel (1) stem diameter ei lika stor som monteringsflansen (4) eller ig män mindre an den, är plan eller nastan plan, och att slirskyddets grepp i en hai vägyta (8) sker pa sa saatt att kanten (9) pä slirskyddets spets (2) skjuter mera ut frän ford-onets däcksyta än i sin ursprungliga ställning (Fig. 4) is not shown under the bracket (Fig. 5) under the head gap (P3), the colors of the special edge (9) slirskyddets ursprungliga ställning, och ytterhöljet (3) pä slirskyddets spetsdel (1), vars spetsom-räde (2) förblir plant or nastan plant när det slits under ringing, bildar en kon som avsmalnar mot monteringsflansen (4). • ·