DE1755304A1 - Tread design for pneumatic vehicle tires - Google Patents

Description

Continental Rubber Works A &

Tread design for pneumatic vehicle tires

The invention relates to a tread design for pneumatic vehicle tires with several circumferential ribs formed by ziokzaok extending grooves are separated from each other.

With pneumatic tires designed in this way, aorait are currently following verlaufer.de Tfutenabachnitte seen in the tire circumferential direction on top of each other. In addition, these grooves determine the lateral surfaces of the üiufangarippen and thus the gripping edges the side surfaces defined by the zigzag shape of the hats the circumference ribs. The cross-section of these mutes generally let u-shaped; for technical reasons, however, a cross-section is generally chosen that is more oriented towards one another Groove surfaces ozw, side surfaces of the peripheral ribs anticipates. The loud ones have a small opening angle or spreading towards the tread.

The pneumatic tires mentioned at the beginning have a comparatively large cornering force due to their circumferential ribs. "The Kutßcliaioherheit and the ability of the tire to transmit drive and braking forces is essentially determined by the Zlokzaok shape of the grooves qzw- the edges of the circumferential ribs rising in different directions to ' {

109842/0418

BAD OWGINAt ^

]) The invention is based on the task of preventing the insecurity of the Iteifenn and thus its traction, and not only in relation to the circumferential direction and the transverse direction of the tire, but also in directions which run parallel to the roadway and which extend at an angle to the transverse or circumferential direction «.

To achieve this object, according to the invention, the side surfaces of the peripheral ribs form in successive groove sections different angles old of the tread straight or approximately stretched groove sections left or right sloping side surfaces of the circumference " determine ribs, so £ s are e.g. increasing to the left Side surfaces in a groove section and in the following one In the middle section, side surfaces of the surrounding ribs that rise towards the right are provided. Advantageously, the Side surfaces of the circumferential ribs in the transverse direction of the hoop seen an opposite increase in relation to the tread on o

The invention is based on the knowledge “that as a result of the sloping side surfaces of the circumferential ribs have a ploughshare-like effect of the gripping edges of the Umiangerippen occurs, especially when the park is wet or damp.

- 3. 1098 42/0418

BATH ORIGINAL

train; the wedge-shaped protruding side edges of the circumferential ribs lead to good traction, at the same time However, the grip is increased in particular under the action of greater forces daduroh that the stressed edge of the Circumferential ribs tend to rear up as a result of the zig-zagged course of the circumferential grooves in the erater line ochrllg to the edge of the circumferential ribs are given, this rearing takes place both with circumferential forces, So when Bosch accelerates and when braking the vehicle, as well as with lateral forces, which predominantly occur when driving on occur in a curve. However, since the side surfaces of the circumferential ribs in the area of successive groove segments Form different angles with the running surface, there is a corresponding counter-rotating plow harrow effect Tdbw. an opposite Raising under the wheel pressure. An undesirable directional effect is thus avoided} the tread design according to the invention is largely independent of the direction of rotation the tire and the direction of the forces which are effective in the area of the floor ellipoe and increase this effect occurs especially when viewed in the transverse direction of the tire Adjacent side surfaces of the circumferential ribs in turn also have a different rise in relation to the tread «This increases the independence of the profile from the aforementioned influences

- 4 1 0 9 8 i ^2/0 A 1 8 BAD original

Xn the drawing is in an exemplary embodiment of the finding of the jor shown, dae 9117 explanation of further details 4 # P serves.

e show »

1 a radial partial cut through LouXat tire zone of a vehicle air eleven's,

Fig. 2 is a partial plan view of the tire according to Figure 1,

Fig c 3 to 5 i · TeJ-lsciinitte neon the lines III * Ul ₉ % Y - IV and ¥ · f

Figure I ₀

You tread de «Laufetreiien · 1 let aXt Z be *« iotjnet. you The middle part is attached at the top or just widened » Tread edges and the formation of e-named

βchuIterη rounded dleee ßundeotmlterfeereioM find »it designated

• f ·

BATH ORIGINAL

The tread 2 .iird formed by several circumferential ribs 4, the separated from one another by ziekzagformig extending circumferential grooves 5 are ο there is one area in the middle of the tread Larger divisionj au the tread edges 2, however, a smaller one Zigzag division provided Each! Bearing consists of two straight groove sections 6 which form an angle of enclose about 120 ° with each other »However, this angle can also be larger or smaller.

Grooves S have a cross section that can be seen in FIGS. 1 »3, 4 and 5. They are determined laterally by the side surfaces 7 of the circumferential ribs 4 (when looking at the tire in the transverse direction in the Vulkanisiei'form enables _o "

In known üexlOn the side surfaces 7 at right Winlrel or virtually dee at right angle to the tread tire ο Due to the invention, however, the side surfaces 7 or »by aie certain level 8 in beeug to the tread obliquely arranged running ₀ form having a in possessed on the running surface 2 running perpendiculars 9 an angle <k of etwn 10 big 30 ° *

BATH ORIGINAL

If the flutenabach sections 6 run straight in each division, there is a certain inclined course for each groove section 6ι, however, the angle of inclination for a hat section 6 ', for example, rising to the right and for the adjacent associated groove section 6' * rising to the left, so that the side surfaces Oi ^ 30 Nutanab3chi.ittee 6 run roughly parallel to one another, but the angles of the side surfaces 7 of adjacent hats 6 are different or opposite. In addition, the angle of inclination <k in the transverse direction of the tire "seen with hats 6 lying opposite one another or rising in opposite directions" This is zoom. recognizable from the partial section according to FIG. 5; the hat section on the left in this figure is inclined towards the right, while the hat section 6 shown on the right in FIG. 5 rises to the left seen with the groove sections 6 lying next to one another here »

In the non-discolored state, there are cross-wise lttageatngen based on the drawing. Thus ZOB ₀ created at the ground contact point at A and B according to Figure 5 wedge-shaped Seitenrändtr the extent rib 4 <> success, however, at the BodenberUhrungsstelle force effects in the direction of the arrow ₉ so 1O is the

109842/0418

BATH

Hip edge at a come to the singriff in a special way and when the force is increased, try to "rake up" while increasing the angle dk. However, no undesirable side force can occur with the same film of lubricant or fluid, since only one of the side surfaces 7 rises in one direction, while all the other side surfaces are arranged with an opposite rise Opening of the Uafanganute 5, so that this gives a c-in '3TgToCeTtSr drainage channel for the drainage of any water on the roadway. _;

- 8 101842/0418 bad o _mNAL

Claims (1)

Anearüchoi , / Surface design for pneumatic vehicle tires with several Circumferential ribs, the hats running in zig-zag shape separated from each other, characterized in that the Lateral surfaces (7) of the catcher! Ppen (4) JLa successive groove dimensions (6 ', 6 ") with different angles (« V) the tread (2) form " 2, Lauffläohenaeetaltung naoh claim 1, characterized thereby, that in one Ilutenabechnitt the side surfaces (7) line · «· eteicend and those following in the circumference of the tire Groove section, the side surfaces are arranged in a row one, 3. Running surface design according to Anepruoh 1, thereby marked, that the ii; Quorrlohtuag dee tires "go one behind the other" lying lateral surfaces (7 / the overhanging ribs (4) «in have opposite increase in said on the Lauffläohe (2). 4 · Leyufflächen ^ e & taltttng naoh the claims 1 bl «) _# characterized in that the side faces (7) of the Äutenebechnitte ob«, which by opposite side surfaces (7) bectioote kittelebeae (8) with the course flat (2) angle ron about 60 bie Form 00 °. 109 * 42/0418 BATH ORIGINAL Tread design according to claims 1 to 4ι thereby gekennaoiohnet, that the inclined with respect to the running surface (2) arranged side surfaces (7) predominantly or exclusively are arranged in the middle ΤθΙΙ of the tread (2) and this Depends on the running surface ebon or is only slightly curved Hanover, April 22, 1958
68-36 P / 32 GD / oil BAD ORIGINAL 109842/0418 Blank page elüH