DE3108140A1 - Pneumatic vehicle tyre - Google Patents

Description

3108U0

Continental Gummi-Werke Aktiengesellschaft, 3000 Hanover

Pneumatic vehicle tires

The invention relates to a pneumatic vehicle tire with a radial carcass, a two-ply or multi-ply belt made of textile or metallic braces arranged in a cord layer and with j at least one bandage that overlaps the belt.

It is known that the fiol resistance plays a role in pneumatic vehicle tires of this type a not insignificant role. Especially in the wake of the energy shortage And efforts are made to increase the price of the rolling resistance of pneumatic vehicle tires in order to reduce the fuel consumption of a vehicle to reduce.

The invention is based on the object of a pneumatic vehicle tire in which the rolling resistance is again significantly reduced, while maintaining or increasing driving safety.

According to the invention, this object is achieved in that the pneumatic vehicle tire has a cut edge belt and at least one bandage that overlaps the belt, that the bandage or bandages consist of a fabric arranged in a cord layer with highly stretchable textile or metallic reinforcements that still have a residual stretch of 0 in the finished tire , 3 to 3 % , and that the reinforcements extend at an angle of almost or exactly zero degrees to the tire circumferential direction.

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Another solution to the problem results from the fact that the pneumatic vehicle tire has a cut edge belt and at least one of the. · Having Gürtr overlapping bandage that the Fe ^ ti-ykeitoträger bcr.ach- widget barter belt layers cross, and that they for ReifenutnfangE direction with it an angle between 21 and y. *> Include symmetrical rJafi 'or the bandage, the bandage from one in Ccral? (; e angecrrlK'jt'ir. lic-

weave with high-stretch fabrics or metallic F <;: -, t, i-keits-; There are carriers that still have a residual expansion in the finished tire. j have to 3%, or extremely dehnu.-igiVirT.en · tilen or metallic reinforcing elements consist of such with that α Le. ". ast" strengthening support in corrugated form extend, the individual 'is ..

with the tire circumferential direction form an angle of nearly or g ^ r ^ u r.ui degrees and that aas tissue due to the V / Ellun ^ ■ in the finished tire has a residual elongation of O, 3 to J%.

The invention is primarily based on the idea that the belt property is automatically self-acting through a belt construction. To be changed dependence on the speed - L \. Kit α ^ π erfi :. '.'. features contemporary results in the advantage that ö <jr Reif he .gürtel uni low speeds up to about 120 km / h relatively weic :: i:

namely both in the radial direction and in the transverse direction ur.a iv circumferential direction, that it is, however, at high speeds. -bc ₍ '.. 120 km / h such stiffening or blocking learns da.i eg w · "förraige deformations in the Zenit game of Laufbandea as b -. i often found tires with soft belts out schlosser : .ir.d.

For tires that are only to be used at comparatively low speeds, it is already necessary to achieve a negligible reduction in rolling resistance, Jisfi -ur Pud '···. Kel between The individual layers of the belt are selected in the range of 1 to 30 and is preferably 2 K. Such hoops can withstand speeds of even more than 100 km / h without any additional bandages, and with them is at low HFC-Gc - :. cnwir.Gi -: - ability to achieve the necessary security.

The measures according to the invention have made it possible to keep the R <Llwiciorstand of a tire in the range from 0 to 120 km / h, in which 95 A- ■ '»! I 03 the driving instructions provided occur, to reduce and at the same time make the high-speed behavior even safer. Ώηηι · \ is responsible for reducing rolling resistance on the one hand »the V.jrweri'U; a £ o,; e: iü '.' f ·

3108KQ

known tire narrower belt or a belt with something
obtuse thread angles on the order of 21 to 30 -

So that the high-speed behavior is not disadvantageous overall

is influenced, additional belts are simultaneously

lapping bandages are provided, which leave a residual '

elongation of 0.3 to 3%. j

Using a narrower belt results in calibration during production
of a tire has the advantage of a curvature that can be produced more easily.

Furthermore, a narrower belt has the advantage of being a
reduced sawing effect on the belt edges. ,

Finally, when using textile reinforcements j in the bandages the advantage of a particularly large material and j Weight savings because two ί in the side areas of the belt

or more steel layers are replaced by a textile layer. j

Further advantageous embodiments of the invention are the subj to refer to claims. j

Two exemplary embodiments of the invention are illustrated below
described in a drawing.

Show it:

Fig. 1 shows a pneumatic vehicle tire with a belt less

Wide and with bandages made of high tensile strength j

ϊ beams in a radial partial section, I

FIG. 2 shows a sequence of layers of the tire developed in the plane of the drawing according to FIG. 1,

3 shows a pneumatic vehicle tire with bandages from extreme

low-stretch reinforcements, which are in a corrugated shape
run, in a radial partial section,

FIG. K shows a layer sequence of the tire developed in the plane of the drawing according to FIG. 3>

5 shows a bandage with a plane perpendicular to the axis;

»Corrugations running in the direction (schernatic) in an L

- cut.

The pneumatic vehicle tire shown in Fig. 1 consists of a keai carcass 1 with textile or metallic reinforcements arranged in a cord layer, a two-ply sectional k-int.en.-irtsi 2 with ir. however, i :: t reduced by up to 10 mm compared to the usual dimensions. And also: two bandages 3 t made of a fabric arranged in a cord layer with high-stretch textiles or metallic: Ft-stirk-? itstr! As far as it is about metallic solid-gkoi ti, tr -gcr in de rubberized bandage fabric, z. B. a Cordpewece ir. ~ £ v which is made up of individual steel wires of the type 3 x 7 / C, 22. Bf = J textile strength gauges can e.g. B. gecer. "Jt *; r b-? K.? Rr .e /. Υ - ΊΥ.'r twisted cords made of rayon, nylon, etc. who used <.i *? N.

The bandages 3 are preferably on the radially -süßeren 3- i \ - · ^det: i arranged means of 2 and extend in the axial RicLtunr over the belt 2 addition so that they this overlap (Fig.?) · The F ^ st irkträger the bandages 3 run almost or exactly i :. der -χ- ¹ '- r. ^ sric. tion of the tire and consist of a hociideiitiungiireich - ..; . '* eri'! - that the bandages 3 in the finished tire a R ^ r Lc; eh iu air -οι. '. ,, Oi gives 3 Io.

Mainly for production-related reasons, it can be early. · R-ia. - ■ '· of the two edge bandages 3 a continuous bundle to v.ih.-.- r., Ν.ι B. can be better fixed during vulcanization. Also ict e- r "~ Lich, bandages 3 between the plies of the belt 2 and unternaib before i · r -. ■ secondment..

The tire according to FIG. 1 gets its rolling resistance, -. Ndrverrir.gt-ru-.r especially through the use of a cut edge belt 2. and rjurc :. r. · Choice of a narrower belt width. So that by these measures ir high-speed behavior overall not r.rchteiiij * ff- ..-. Fli;:; · - is, the drums 3 are marked with an exactly abpp :: ti.T.mte :. De; ί ..; · : ■ keep deployed. Boi velocities bin c <- 1.- '; ι. ./ · · · · ί ^..: 'ϊ · h: r, it d-'iij the tire a high degree of W.ichheit η j - ;. τ k . c. ge. ■ -. vftr.leihpn.

PAD ORIGINAL

3108U0

At higher speeds, the elongation curve enters the Saturation, so that a stiffening of the tire occurs, the otherwise resulting undulating deformation of the zenith part of the tire or even detachment of the belt 2 at its edges.

In a further exemplary embodiment according to FIG. 3, a tire with the same radial carcass 1 ', but with a different two-layer cut edge belt ^2f and other bandages 3' is shown.

The reinforcements are arranged within the layers V, 5 'of the cut ^{edge belt 2 1} in a cord layer and run between the layers h \ 5', crossing one another. However, they close with the tire circumferential alignment instead of the usual angle between 16 and 20; en such between 2 'and 30 °; it has been shown that the rolling resistance of a tire for not too high speeds at an angle above 20 ° does not decrease insignificantly,

The bandages 3 ′ consist of a fabric with extremely low-stretch textiles or metallic reinforcements that are arranged in a cord layer and run in a corrugated shape. The individual waves form an angle of almost or exactly zero degrees with the tire circumferential direction. The corrugation is selected such that the fabric in the finished tire has a residual elongation of 0.3 to 3 % primarily due to the corrugation. The technical effect of the bandages y with the corrugated strength supports is the same as in Example 1 for the bandages 3 with the high-elongation strength supports.

According to FIG. K , the waves run in the plane of the bandages 3 *, so that the whole of the bandage fabric is arranged almost in planes of cylinder jackets on the finished tire.

According to FIG. 5, the waves run in a plane perpendicular to the axial direction so that not only the individual strength members have corrugations, but the fabric of the bandages 3 "is generally corrugated on the halves arranged sit.

Instead of the corrugated bands J ¹ , 3 ", in the ?. Aar.

I Example 1 can be used.

j; Conversely, it is also possible in example 1 to use the bandages 3 ¹ »3" of the

L ¹ embodiment 2 to use. Furthermore, it goes without saying that

f the two types of bandages 3i 3 ¹ ι 3 "not on one insert with

j, 5 are limited to the belt shapes described.

ι In this way, particularly good results have been achieved with a belt shape

let, which is a combination of the two described. Of the

J belt 2 'according to FIG. 3 is modified in such a way that it has a different

I reduced width according to FIG. 1 is obtained.

Claims (4)

3-.108U0 Claims ! Pneumatic vehicle tire with a radial carcass, a two- or 'multi-layer belt in cord ply disposed text lien or \ metallic reinforcing members and having at least one belt overlapping bandage, characterized in that the pneumatic vehicle tire is a sectional edge belt (2) and at least one belt (2) overlapping bandage (3) has that the bandage (3) or the bandages (3) consist of a fabric arranged in Gordlage with highly stretchable textile or metallic support straps, which in the finished tire still have a 1-ifci.tdehnung of 0.3 to 3 % , and that the strength elements ■ at an angle of almost or exactly zero degrees to the ripening; α? .-; run in the direction of the catch. j 2. Pneumatic vehicle tire with a radial carcass, a two- or multi-layer belt made of textile or metallic reinforcements arranged in a cord layer and with at least one bandage overlapping the belt, characterized in that the pneumatic vehicle tire has a cut edge belt (2 ¹ ) and at least one belt (2 ° overlapping bandage (3 *, 3 ") has that the strength supports of adjacent belt layers (A · ¹ , 5 ¹ ) cross and that they form an angle between 21 and 30 symmetrically to the tire circumferential direction that the bandage (3 ', 3 ") or the bandages (3'i 3") consist of a fabric arranged in a cord layer with highly stretchable textile or metallic reinforcements that still have a residual stretch in the finished tire until off
3 % , or one with extremely low-stretch textile or metal reinforcements that the latter reinforcements run in a corrugated shape, that the individual waves enclose an angle of almost or exactly zero degrees with the tire circumferential direction and that the fabric due to the Weilunfc in the finished Tire has a residual elongation of 0.3 to 3 5 ». 3. Pneumatic vehicle tire according to claim 1 or 2, characterized by two Edge bandages (3, 3 ', 3 "). 4. Pneumatic vehicle tire according to claim 1 or 2, characterized in that the bandage (3, 3 ¹ > 3 ") or the bandages (3, 3», 3 ") are arranged between the tread and belt (2.2 ·). I 5 · pneumatic vehicle tire according to claim 2, characterized in that i the waves of the bandage fabric (3 ") in planes perpendicular to the axial j run in the direction. 6. Pneumatic vehicle tire according to claim 2, characterized in that I run the waves in the planes of the fabric strip or strips of the bandages (3 ¹ ). 7 · Pneumatic vehicle tires with a radial carcass and one, two or r. · ■ layered belt aun textile arranged in a cord layer for: or r; etallii-c. ^! Reinforcements, characterized in that r-i the Yf. activity i carriers of adjacent belt layers cross and dnß them rj; .x, ~. ~ trizch z-.:r ! Heifencircumferential direction with it an angle between? '· -And JO uni conclude. 8. Pneumatic vehicle tire according to claims 2 or 7, gek ^ rnzeichr-et dur j an angle between 21 and 25 which is preferably "3". Hanover, March 3, 1981
81-4 P / Sch Sch / Bu