DE102018211296A1 - Pneumatic vehicle tire with at least one tire bead comprising both a core and a core profile and method for producing a pneumatic vehicle tire and use of an inner and / or an outer reinforcement layer - Google Patents

Abstract

The invention relates to a pneumatic vehicle tire with at least one tire bead comprising both a core and a core profile, the core profile enclosing the core rotationally symmetrically with respect to the axial axis of the pneumatic vehicle tire and having a tapering cross-sectional profile in the radial sectional view, the core profile consisting of at least three core profile elements, characterized in that the three core profile parts comprise a first rubber component, a second rubber component and an inner reinforcement layer. The invention also relates to a method for producing a pneumatic vehicle tire and the use of an inner reinforcement layer and / or an outer reinforcement layer.

Description

The invention relates to a pneumatic vehicle tire with at least one tire bead comprising both a core and a core profile, the core profile enclosing the core rotationally symmetrically to the axial axis of the pneumatic vehicle tire and having a tapering cross-sectional profile in the radial sectional view, the core profile consisting of at least three core profile elements. The invention also relates to a method for producing a pneumatic vehicle tire and the use of an inner reinforcement layer and / or an outer reinforcement layer.

Nowadays, vehicle tires are exposed to increasingly demanding conditions of use and are therefore experiencing an ever increasing degree of acting forces. For example, vehicle tires must have sufficient handling with the lowest possible rolling resistance at ever higher driving speeds. At higher driving speeds, the lateral forces occurring in the curves increase disproportionately.

It was therefore an object of the invention to provide a pneumatic vehicle tire with improved handling and / or improved rolling resistance, in particular to provide a pneumatic vehicle tire with improved handling and / or improved rolling resistance when cornering.

This object is achieved according to the invention by a pneumatic vehicle tire with at least one tire bead comprising both a core and a core profile, the core profile enclosing the core rotationally symmetrically to the axial axis of the pneumatic vehicle tire and having a tapering cross-sectional profile in the radial sectional view, the core profile comprising at least three core profile Elements,
characterized in that
the three core profile elements comprise a first rubber component, a second rubber component and an inner reinforcement layer.

The tire beads known in the art of pneumatic vehicle tires normally consist of one or more rubber components, which may consist of identical or different rubber compositions. Rubber components have the advantage that they can usually be easily processed into the desired shape and, depending on the rubber composition, have the desired material properties. However, the maximum stiffness of a rubber component without becoming brittle is naturally limited. It has been a great achievement of the present invention to have found that this maximum tire bead stiffness can be further increased by processing reinforcement layers as core profile elements between the various rubber components of a tire bead core tread. Such reinforcement layers in the core profile are referred to as inner reinforcement layers in the context of the present invention. Reinforcement layers also have the advantages of problem-free processing described above, but can be reinforced by textile or metallic elements as required. In this way, a pneumatic vehicle tire according to the invention is able to have improved handling and improved rolling resistance even at very high driving speeds. In particular, an improved handling and an improved rolling resistance when cornering can be achieved because, due to the core profile described above, the side wall of a pneumatic vehicle tire according to the invention is stiffer and corresponding lateral forces can be better absorbed.

• - mindestens ein Kernprofil-Element

und

• - eine äußere Festigkeitsträgerlage

umfasst, wobei die äußere Festigkeitsträgerlage

• - das Kernprofil oder
• - das Kernprofil und den Kern

zumindest teilweise umgibt, bevorzugt vollumfänglich umgibt. Zusätzlich umfasst ein solcher erfindungsgemäßer Fahrzeugluftreifen besonders bevorzugt zusätzlich eine Karkasse. Hierbei sind die Korde der äußeren Festigkeitsträgerlage besonders
bevorzugt im Wesentlichen senkrecht zu den Korden der inneren Festigkeitsträgerlage. Zudem gelten die nachstehenden Ausführungen zu einer äußere Festigkeitsträgerlage eines erfindungsgemäßen Fahrzeugluftreifens.A pneumatic vehicle tire as described above is preferred, with the pneumatic vehicle tire instead of the at least three core profile elements

• - at least one core profile element

and

• - an outer reinforcement layer

comprises, wherein the outer reinforcement layer

• - the core profile or
• - the core profile and the core

at least partially surrounds, preferably completely. In addition, such a pneumatic vehicle tire according to the invention particularly preferably additionally comprises a carcass. The cords of the outer reinforcement layer are special
preferably essentially perpendicular to the cords of the inner reinforcement layer. In addition, the following statements apply to an outer reinforcement layer of a pneumatic vehicle tire according to the invention.

A pneumatic vehicle tire is preferred as described above or as described above as preferred, the pneumatic vehicle tire having two to ten tire beads, particularly preferably having exactly two tire beads. Very particularly preferably, exactly two, at least two or all of the tire beads of a pneumatic vehicle tire according to the invention have the core profile described above or below.

A special tire for special areas of application can have up to five tire beads at the end of each side wall of a pneumatic vehicle tire according to the invention. Such special tires have to carry particularly heavy loads and are used in particular in the military and / or in agriculture. In the case of such special tires, the use of three core tread elements according to the pneumatic vehicle tire described above is therefore particularly advantageous since the rigidity of the lower side walls of the pneumatic vehicle tire according to the invention is increased.

In the context of the present invention, a core profile of a pneumatic vehicle tire can also comprise more than three core profile elements, wherein in particular there is also more than one inner reinforcement layer, in particular as described below.

A pneumatic vehicle tire as described above or as described above as preferred is preferred, the inner reinforcement layer comprising rubberized textile cords, rubberized steel cords and / or rubberized steel plates.

• - eine erste, eine zweite und eine dritte Gummikomponente und zwei innere Festigkeitsträgerlagen umfassen,
• - eine erste, eine zweite, eine dritte und eine vierte Gummikomponente und drei innere Festigkeitsträgerlagen umfassen,
• - eine erste, eine zweite, eine dritte, eine vierte und eine fünfte Gummikomponente und vier innere Festigkeitsträgerlagen umfassen

oder

• - eine erste, eine zweite, eine dritte, eine vierte, eine fünfte und sechste Gummikomponente und fünf innere Festigkeitsträgerlagen umfassen.

A pneumatic vehicle tire is preferred as described above or as described above as preferred, the core profile consisting of five, seven, nine or eleven core profile elements, the five, seven, nine or eleven core profile elements correspondingly

• comprise a first, a second and a third rubber component and two inner reinforcement layers,
• comprise a first, a second, a third and a fourth rubber component and three inner reinforcement layers,
• - Include a first, a second, a third, a fourth and a fifth rubber component and four inner reinforcement layers

or

• - Include a first, a second, a third, a fourth, a fifth and sixth rubber component and five inner reinforcement layers.

A pneumatic vehicle tire as described above or as described above as preferred is preferred, the at least one inner reinforcement layer or the two, three, four or five inner reinforcement layers spatially separating the individual rubber components of the core profile from one another.

An advantage of the aspect of the present invention described above is that the numbers of rubber components and reinforcement layers described above can be adjusted according to the size of the tire and thus the desired stiffness of the sidewall of a pneumatic vehicle tire according to the invention can be set easily.
Car tires preferably have two inner reinforcement layers per core profile. Truck tires preferably have three or four inner reinforcement layers per core profile.

Special tires preferably have five or more inner reinforcement layers per core profile.

• - das Kernprofil oder
• - das Kernprofil und den Kern

zumindest teilweise umgibt,
wobei die äußere Festigkeitsträgerlage bevorzugt

• - das Kernprofil oder
• - das Kernprofil und den Kern

vollumfänglich umgibt und ganz besonders bevorzugt
die zwei Enden der äußeren Festigkeitsträgerlage in der Radialschnittansicht gesehen oberhalb oder seitlich des Kernprofils oder unterhalb des Kerns formschlüssig oder materialschlüssig miteinander verbunden sind.A pneumatic vehicle tire as described above or as described above as preferred is preferred, with an outer reinforcement layer,

• - the core profile or
• - the core profile and the core

at least partially surrounds
the outer reinforcement layer being preferred

• - the core profile or
• - the core profile and the core

completely surrounds and very particularly preferred
the two ends of the outer reinforcement layer are seen in the radial sectional view above or to the side of the core profile or below the core with a positive or material connection.

Such a form-fitting or material-locking connection of the two ends can be achieved, for example, by vulcanizing the rubber coating of the outer reinforcement layer, by splicing the two ends or by appropriately shaping the two ends of the outer reinforcement layer. In particular, the splicing of the two ends results in a particularly stable connection between the ends, in contrast to the vulcanization of the ends of the outer reinforcement layer.
An advantage of the above-described aspect of the present invention is that the core profile of a pneumatic vehicle tire according to the invention unexpectedly increases the rigidity of the core profile of a pneumatic vehicle tire according to the invention by the surrounding outer reinforcement layer of the core profile. Without wishing to be bound by any scientific theory, the action of a lateral force on a pneumatic vehicle tire according to the invention appears to lead to a deformation of the core profile described above or below. Here, the middle part of the core profile moves in the direction of the laterally acting force, but it moves tapering the tip of the core profile and the core of the core profile do not move significantly, as for example in 2 shown. In this way, one side surface of the outer reinforcement layer is stretched more, while the other is compressed. Since the outer reinforcement layer resists both compression and stretching, such lateral forces can be absorbed particularly well.

In the context of the present invention, the middle part of the core profile extends from the tip of the core profile to the transition between the core and the middle part of the core profile, the transition between the core and the middle part of the core profile preferably being the outer point of the core profile lying directly on the core. Elements that are farthest from the top of the core profile.

Very particularly preferably, the outer reinforcement layer surrounds both the core profile and the core of a pneumatic vehicle tire according to the invention, the two ends of the outer reinforcement layer being seen in the radial sectional view to the side of the core profile or below the core with a positive or material connection.

An advantage of the aspect of the present invention described above is that the connection of the two ends to the side of the core profile or below the core is more stable than above the core profile and a corresponding pneumatic vehicle tire according to the invention can thus be used for longer without damage.

Very particularly preferably, the plane in which the cords of the outer reinforcement layer run spans a maximum deviation angle a of 60 ° to a normal vector of the surface of one or all of the inner reinforcement layers, particularly preferably a maximum deviation angle a of 45 °, very particularly a maximum deviation angle a of 30 °, in particular very particularly preferably a maximum deviation angle a of 15 °, the cords of the outer reinforcement layer running to an extremely high extent preferably essentially to a normal vector of the area of the one inner reinforcement layer or all inner reinforcement layers. Correspondingly, the deviation angle a between the plane in which the cords of the outer reinforcement layer run and a normal vector of the area of one or all of the inner reinforcement layers is preferably in the range from 10 ° to 60 °, particularly preferably in the range from 10 ° to 45 ° particularly preferably in the range from 10 ° to 30 °, in particular very particularly preferably in the range from 10 ° to 15 °.

In the context of the present invention, the expression “maximum deviation angle” between a vector and a normal vector of a surface means that the angle spanned by the vector and the normal vector of the surface at any point on the surface is not greater than said maximum development angle. In the context of the present invention, the expression “maximum deviation angle” which is spanned by a normal vector of a first surface with another surface means that the angle spanned at any point of contact of the first and the other surface between the normal vector of the first surface and the normal vector the other area is not larger than said maximum development angle. This applies in particular to the unwinding angles a, b and c described above and below.

The outer reinforcement layer preferably consists of rubberized or ungummed textile cords, particularly preferably the outer reinforcement layer consists of the same material as the carcass of the pneumatic vehicle tire according to the invention.

A pneumatic vehicle tire as described above or as described above as preferred is preferred, the outer reinforcement layer being at least partially, preferably completely, surrounded by at least one carcass ply.

A pneumatic vehicle tire is preferred as described above or as described above as preferred, wherein the one or all inner reinforcement layer has a flat or preferably a planar shape and spatially separates the individual rubber components of the core profile from one another, with a normal vector of an area of one or more than one inner reinforcement layer or all normal vectors of a surface of one or more than one inner reinforcement layer preferably has a maximum deviation angle b of 60 ° to the radial direction of the pneumatic vehicle tire, particularly preferably a maximum deviation angle b of 45 °, very particularly preferably a maximum deviation angle b of 30 ° , in particular very particularly preferably a maximum deviation angle b of 15 °, a normal vector of a surface of the at least one inner reinforcement layer or preferably all normal vectors of a surface of the inner F Esterstträgerlage is extremely highly preferably substantially parallel to the radial direction of the pneumatic vehicle tire. Accordingly, the deviation angle b is preferably in the range from 10 ° to 60 °, particularly preferably in the range from 10 ° to 45 °, very particularly preferably in the range from 10 ° to 30 °, in particular very particularly preferably in the range from 10 ° to 15 °.

An advantage of the aspect of the present invention described above is that lateral forces perpendicular to the radial direction can be better absorbed by a pneumatic vehicle tire according to the invention described above.

A pneumatic vehicle tire as described above or as described above as preferred is particularly preferred, at least one inner reinforcement layer having rubberized cords, the cords preferably being made of textile or metal, such as steel. The cords of one or more than one inner reinforcement layer preferably run at a maximum deviation angle c of 60 ° to the circumferential direction of the pneumatic vehicle tire, particularly preferably at a maximum deviation angle c of 45 °, very particularly preferably at a maximum deviation angle c of 30 °, in particular very particularly preferably at a maximum deviation angle c of 15 °, the cords of the one or the at least inner reinforcement layer preferably running in an extremely high degree essentially parallel to the circumferential direction of the pneumatic vehicle tire. Accordingly, the deviation angle c is preferably in the range from 10 ° to 60 °, particularly preferably in the range from 10 ° to 45 °, very particularly preferably in the range from 10 ° to 30 °, particularly very particularly preferably in the range from 10 ° to 15 ° ,

An advantage of the aspect of the present invention described above is that the core profile of a tire according to the invention has a particularly high degree of rigidity in the circumferential direction compared to a pneumatic vehicle tire according to the invention, in that the deviation angle c is correspondingly larger.

A pneumatic vehicle tire as described above as preferred or as described above as particularly preferred is very particularly preferred, the rubberized cords being present in the cross-bracing in one or in the at least one inner reinforcement layer
and being preferred
the rubberized cords cross-wise at an angle of 20 ° to 70 ° to each other, particularly preferably at an angle of 30 ° to 60 °, very particularly preferably at an angle of 40 ° to 50 °.

An advantage of the aspect of the present invention described above is that with a cross brace stiffness can be enhanced in more than one direction. Thus, not only lateral forces but also other forces applied to the tire, which act on a pneumatic vehicle tire according to the invention, can be better absorbed.

A pneumatic vehicle tire as described above as preferred or as described above as particularly preferred is also very particularly preferred, the maximum distance between the rubberized cords of the one or at least one inner reinforcement layer corresponding to the diameter of the cords in the respective inner reinforcement layer, the diameter of the rubberized cords of the one or at least one inner reinforcement layer preferably in the range from 0.1 mm to 10 mm, particularly preferably in the range from 0.1 mm to 5 mm, very particularly preferably in the range from 0.1 mm to 1 mm, in particular very particularly preferably in the range from 0.1 mm to 0.5 mm. The distances between the individual rubberized cords of one or the at least one inner reinforcement layer are constant.

An advantage of the aspect of the present invention described above is that a certain minimum degree of rigidity of the core profile of a pneumatic vehicle tire according to the invention is defined.

A pneumatic vehicle tire as described above or as described above as preferred is preferred, wherein at least one of the inner reinforcement layer has at least three or at least four rubberized cords.
An advantage of the aspect of the present invention described above is that a certain minimum degree of rigidity of the core profile of a pneumatic vehicle tire according to the invention is defined.

A pneumatic vehicle tire as described above or as described above as preferred is preferred, at least one inner reinforcement layer comprising rubberized strips of metal or an alloy.

An advantage of the aspect of the present invention described above is that, in comparison with steel cords, an even higher rigidity can be achieved if side forces act on a pneumatic vehicle tire according to the invention parallel to the surface of the inner reinforcement layer.

A pneumatic vehicle tire is preferred as described above or as described above as preferred, the width of the one or all of the above-described strips of the inner reinforcement layer decreasing from the core of the tire bead in the direction of the tread of the pneumatic vehicle tire. The thickness of the strip described above, which runs perpendicular to the width, is preferably constant and / or the width extends at least essentially in the radial direction or in accordance with the deviation angle b as described above.

A pneumatic vehicle tire as described above or as described above as preferred is preferred, the strips described above having a layer on their surface, the layer comprising brass and / or a sulfur-based adhesion promoter, preferably consisting thereof.

A sulfur-based coupling agent is, for example, a mixture comprising oil-extended sulfur and one or more than one metal salt of stearic acid, such as cobalt stearate, sodium stearate, magnesium stearate or iron stearate. Instead of the metal salt of stearic acid, the mixture can also comprise chloropyrimidine and chlorotriazine derivatives as adhesion promoters in combination with a resorcinol donor or tetrachloro-1,4-benzoquinone as adhesion promoters. The mixture preferably also comprises resorcinol.

One problem is that the rubberized strips shift or otherwise move relative to rubber during the application of lateral forces to a pneumatic vehicle tire according to the invention. This would lead to gross errors in the pneumatic vehicle tire. An advantage of the aspect of the present invention described above is that there is no movement relative to gum.

A pneumatic vehicle tire as described above or as described above as preferred is preferred, the outer reinforcement layer being at least partially, preferably completely, surrounded by at least one carcass ply.

A pneumatic vehicle tire as described above or as described above as preferred is preferred which has at least three core profile elements more than one inner reinforcement layer, for example two, three, four or five as described above, and wherein the majority or all of the inner reinforcement layers of the core profile run essentially parallel to each other.

A pneumatic vehicle tire as described above or as described above as preferred is preferred, wherein a rubber component of the core profile, the majority of the rubber components of the core profile or all rubber components of the core profile have the shape of a cylinder with a polygonal cross section, the cross-sectional plane running perpendicular to the circumferential direction of the vehicle pneumatic tire , The cross section of the cylinder described above particularly preferably has a triangle, a quadrangle, a pentagon, a hexagon, a heptagon, an octagon or a nine-corner.

The cross section of the cylinder described above very particularly preferably has a triangle or a quadrangle, in particular a symmetrical trapezoid.

An advantage of the aspect of the present invention described above is that, depending on the alignment of the side wall of a tire according to the invention, the alignment of the inner reinforcement layer can be optimized.

A pneumatic vehicle tire as described above or as described above as preferred is preferred, the pneumatic vehicle tire being a commercial vehicle pneumatic tire and or a passenger car pneumatic tire with an approved maximum speed of at least 200 km / h.

An advantage of the above aspect of the present invention is that, in particular for the types of tires described above, improved driving behavior has to be achieved, since in the case of commercial vehicle pneumatic tires high loads have to be carried and a passenger car pneumatic tire, in particular those with an approved maximum speed of at least 200 km / h, experiences a particularly high load when driving fast. Passenger car pneumatic tires with an approved maximum speed of at least 200 km / h have an official tire identification with the letters "ZR" or "Y". Pneumatic vehicle tires with an approved maximum speed of at least 200 km / h, in particular passenger car pneumatic tires with an approved maximum speed of at least 200 km, are particularly thin and should therefore be reinforced according to the invention in the core profile.

A pneumatic vehicle tire as described above or as described above as preferred is preferred, the height of the core profile, measured between the outside of the tip of the tapered core profile and the center of the core in cross section perpendicular to the circumferential direction of the pneumatic vehicle tire, in the range from 1 mm to 800 mm is, preferably in the range from 6 mm to 400 mm, particularly preferably in the range from 6 mm to 250 mm, very particularly preferably in the range from 6 mm to 90 mm, particularly very particularly preferably in the range from 6 mm to 60 mm.

A pneumatic vehicle tire is preferred as described above or as described above as preferred, the tip of the tapering cross-sectional profile of the core profile tapering axially inward or axially outward, with the vehicle pneumatic tire very particularly preferably two Tire beads each having a core profile and each tip of the tapering cross-sectional profile of the two core profiles each incline axially inwards or respectively axially outwards.
It is preferred if the two tips incline axially outwards and the outer side of the outer reinforcement layer is stretched so that the maximum radian measure at one point on the outer side of the outer reinforcement layer is at least 0.001, particularly preferably at least 0.01, very particularly preferably at least 0.1, in particular very particularly preferably at least 1, in a particularly high degree 10 , in a particularly high degree 100 , Accordingly, the radian described above is preferably in the range from 0.001 to 100, particularly preferably in the range from 0.01 to 100, very particularly preferably in the range from 0.1 to 100, particularly very particularly preferably in the range from 1 to 100 Dimensions preferably in the range from 10 to 100.

In the context of the present invention, the maximum radian measure at one point on a page is the highest possible radian measure that is achieved at any point on the side face of this page. In the context of the present invention, the radian "wheel" is the mathematically defined ratio of the arc length 1 for radius r: Rad = 1 / r. The arc length is for explanation 1 and the respective radius r in 1 shown.

An advantage of the aspect of the present invention described above is that by the opposite inclination of the two tips of the two core profiles of a pneumatic vehicle tire according to the invention, the rigidity of the core profile can be increased both on left and on right-hand bends, since at least one core profile in the respective bend is already in the direction the lateral forces are "pre-tensioned" and are therefore even stiffer.

• - eine äußere Festigkeitsträgerlage das Kernprofil und den Kern vollumfänglich umgibt, wobei die Korde der äußeren Festigkeitsträgerlage in einem maximalen Abweichungswinkel von 60° zum Normalvektor der Fläche der Festigkeitsträgerlage verlaufen,
• - die zwei inneren Festigkeitsträgerlagen eine planare Form besitzen und jede einzelnen der drei Gummikomponenten des Kernprofils voneinander räumlich trennen, wobei ein Normalvektor einer Fläche der innere Festigkeitsträgerlage einen maximalen Abweichungswinkel von 60° zur radialen Richtung des Fahrzeugluftreifens aufweist,
• - mindestens eine innere Festigkeitsträgerlage gummierte Korde aufweist, wobei die Korde aus Textil oder Stahl bestehen und die Korde der einen oder der mindestens einen inneren Festigkeitsträgerlage in einem maximalen Abweichungswinkel von 60° zur Umfangrichtung des Fahrzeugluftreifens verlaufen,
• - der maximale Abstand der gummierten Korde der einen oder der mindestens einen inneren Festigkeitsträgerlage dem Durchmesser der Korde in der jeweiligen inneren Festigkeitsträgerlage entspricht, wobei der Durchmesser der gummierten Korde der einen oder der mindestens einen inneren Festigkeitsträgerlage im Bereich von 0,1 mm bis 10 mm liegt,
• - mindestens eine innere Festigkeitsträgerlage mindestens vier gummierte Korde aufweist

und

• - sämtliche der besagten inneren Festigkeitsträgerlagen des Kernprofils im Wesentlichen parallel zueinander verlaufen.

A pneumatic vehicle tire as described above or as described above as preferred is particularly preferred, the core profile consisting of nine core profile elements,
characterized in that
the nine core profile parts a first, a second, a third, a fourth and one
fifth rubber component and four inner reinforcement layers,
in which

• an outer reinforcement layer completely surrounds the core profile and the core, the cords of the outer reinforcement layer running at a maximum angle of deviation of 60 ° to the normal vector of the surface of the reinforcement layer,
• the two inner reinforcement layers have a planar shape and spatially separate each of the three rubber components of the core profile, a normal vector of a surface of the inner reinforcement layer having a maximum deviation angle of 60 ° to the radial direction of the pneumatic vehicle tire,
• has at least one inner reinforcement layer rubberized cords, the cords made of textile or steel and the cords of one or the at least one inner reinforcement layer extend at a maximum angle of deviation of 60 ° to the circumferential direction of the pneumatic vehicle tire,
• - The maximum distance of the rubberized cords of the one or at least one inner reinforcement layer corresponds to the diameter of the cords in the respective inner reinforcement layer, the diameter of the rubberized cords of the one or at least one inner reinforcement layer in the range from 0.1 mm to 10 mm lies,
• - At least one inner reinforcement layer has at least four rubberized cords

and

• - All of said inner reinforcement layers of the core profile run substantially parallel to each other.

• - eine äußere Festigkeitsträgerlage das Kernprofil und den Kern vollumfänglich umgibt, wobei die Korde der äußeren Festigkeitsträgerlage in einem maximalen Abweichungswinkel von 60° zum Normalvektor der Fläche der Festigkeitsträgerlage verlaufen,
• - die zwei inneren Festigkeitsträgerlagen eine planare Form besitzen und jede einzelnen der drei Gummikomponenten des Kernprofils voneinander räumlich trennen, wobei ein Normalvektor einer Fläche der innere Festigkeitsträgerlage einen maximalen Abweichungswinkel von 60° zur radialen Richtung des Fahrzeugluftreifens aufweist,
• - mindestens eine innere Festigkeitsträgerlage gummierte Streifen aus Metall oder einer Legierung umfasst,
• - die Breite des Streifens der innere Festigkeitsträgerlage vom Kern des Reifenwulstes in Richtung Laufstreifen des Fahrzeugluftreifens abnimmt,
• - die Streifen der gummierten Streifen mit Messing und/oder einem schwefelbasiertem Haftvermittler beschichtet sind

und

• - sämtliche der besagten inneren Festigkeitsträgerlagen des Kernprofils im Wesentlichen parallel zueinander verlaufen.

A pneumatic vehicle tire as described above is also particularly preferred
or as described above as preferred, the core profile consisting of nine core profile elements,
characterized in that
the nine core profile parts comprise a first, a second, a third, a fourth and a fifth rubber component and four inner reinforcement layers,
in which

• an outer reinforcement layer completely surrounds the core profile and the core, the cords of the outer reinforcement layer running at a maximum angle of deviation of 60 ° to the normal vector of the surface of the reinforcement layer,
• the two inner reinforcement layers have a planar shape and spatially separate each of the three rubber components of the core profile, a normal vector of a surface of the inner reinforcement layer having a maximum deviation angle of 60 ° to the radial direction of the pneumatic vehicle tire,
• at least one inner reinforcement layer comprises rubberized strips of metal or an alloy,
• - the width of the strip of the inner reinforcement layer decreases from the core of the tire bead in the direction of the tread of the pneumatic vehicle tire,
• - The strips of the rubberized strips are coated with brass and / or a sulfur-based coupling agent

and

• - All of said inner reinforcement layers of the core profile run substantially parallel to each other.

The above-described advantageous aspects of a pneumatic vehicle tire according to the invention also apply to all aspects of a method described below and the advantageous aspects of inventive methods discussed below apply accordingly to all aspects of a pneumatic vehicle tire according to the invention.

• a) Bereitstellen oder Herstellen eines Kernprofils wie vorstehend beschrieben oder wie vorstehend als bevorzugt beschreiben,
• c) Einbau des in Schritt a) bereit- oder hergestellten Kernprofils in einem Reifenrohling

und

• d) Weiterverarbeiten des Reifenrohlings zu einen Fahrzeugluftreifens.

The invention also relates to a method for producing a pneumatic vehicle tire, comprising the following steps:

• a) providing or producing a core profile as described above or as described above as preferred,
• c) Installation of the core profile prepared or produced in step a) in a green tire

and

• d) processing the green tire into a pneumatic vehicle tire.

1. a) Bereitstellen oder Herstellen eines Kernprofils wie vorstehend beschrieben oder wie vorstehend als bevorzugt beschreiben,
2. b) Umschließen des in Schritt a) bereit- oder hergestellten Kernprofils mit einer äußeren Festigkeitsträgerlage wie vorstehend beschrieben oder wie vorstehend als bevorzugt beschreiben,
3. c) Einbau des in Schritt b) umschlossenen Kernprofils in einen Reifenrohling

und

• d) Weiterverarbeiten des Reifenrohlings zu einem Fahrzeugluftreifens.

A method as described above is preferred, comprising the following steps:

1. a) providing or producing a core profile as described above or as described above as preferred,
2. b) enclosing the core profile prepared or produced in step a) with an outer reinforcement layer as described above or as described above as preferred,
3. c) Installation of the core profile enclosed in step b) in a green tire

and

• d) processing the green tire into a pneumatic vehicle tire.

Enclosing the core profile, in particular fully encasing the core profile, has the advantages described above.

1. a) Bereitstellen oder Herstellen eines Kernprofils wie vorstehend beschrieben oder wie vorstehend als bevorzugt beschreiben oder eines Kernprofils mit mindestens einer Gummikomponente,
2. b) Umschließen des in Schritt a) bereit- oder hergestellten Kernprofils mit einer äußeren Festigkeitsträgerlage wie vorstehend beschrieben oder wie vorstehend als bevorzugt beschreiben,

spann) Spannen einer Fläche der äußeren Festigkeitsträgerlage, sodass sich die Spitze des sich verjüngenden Querschnittsprofils des Kernprofils nach axial innen oder nach axial außen neigt und/oder die äußere Festigkeitsträgerlage einen gespannte Seite aufweist,

• c) Einbau des umschlossenen Kernprofils mit der in Schritt spann) gespannten äußeren Festigkeitsträgerlage in einen Reifenrohling

und

• d) Weiterverarbeiten des Reifenrohlings zu einem Fahrzeugluftreifens.

A method as described above or as described above as preferred is preferred, the method comprising the following steps:

1. a) providing or producing a core profile as described above or as described above as preferred or a core profile with at least one rubber component,
2. b) enclosing the core profile prepared or produced in step a) with an outer reinforcement layer as described above or as described above as preferred,

clamping) tensioning a surface of the outer reinforcement layer so that the tip of the tapering cross-sectional profile of the core profile tilts axially inwards or outwards and / or the outer reinforcement layer has a tensioned side,

• c) Installation of the enclosed core profile with the outer reinforcement layer stretched in step) in a green tire

and

• d) processing the green tire into a pneumatic vehicle tire.

The additional tensioning of a surface of the outer reinforcement layer has the advantages described above and leads to the pneumatic vehicle tire according to the invention described above, wherein the one or all tips of the tapering cross-sectional profile of a pneumatic vehicle tire according to the invention tilts axially inwards or outwards. The additional tensioning makes the core profiles with the tensioned surfaces of the outer reinforcement layers even stiffer. The outer side of the outer reinforcement layer is preferably tensioned such that the maximum radian measure at one point on the outer side of the outer reinforcement layer is at least 0.0001, particularly preferably at least 0.001, very particularly preferably at least 0.01, particularly very particularly preferably at least 0, 1, in a particularly high degree at least 0.1, in a particularly particularly high degree at least 1. The same also applies to the maximum radian measure at one point on the inner side of the outer reinforcement layer when the two tips are inclined axially inwards. Accordingly, the radian described above is preferably in the range from 0.001 to 100, particularly preferably in the range from 0.01 to 100, very particularly preferably in the range from 0.1 to 100, particularly very particularly preferably in the range from 1 to 100 Dimensions preferably in the range from 10 to 100.

In the manufacturing process, the step of tensioning one or both tips of the tapered cross-sectional profiles of the core profiles of the tire can be carried out, for example, during the lifting on a carcass sleeve in a tire building machine or by appropriately adjusting the heating mouth width of the vulcanization mold or when mounting the pneumatic vehicle tire on a rim a rim with too small an opening, happen. Tensioning the one or the two outer tips is preferred by placing at least one additional tensioning rubber component between the outer reinforcement layer and the core profile elements before or during vulcanization. When vulcanizing, the additional clamping rubber component means that less space is available on one side of the core profile and this results in a pre-curvature of the core profile, so that due to the resulting tension, one or the two tips of the tapering cross-sectional profiles of the core profiles of the tire to the outside be bent.

The above-described advantageous aspects of a pneumatic vehicle tire according to the invention and a method according to the invention also apply to all aspects of a use described below and the advantageous aspects of uses according to the invention discussed below apply accordingly to all aspects of a pneumatic vehicle tire and a method according to the invention.

• - einer inneren Festigkeitsträgerlage in einem Kernprofil eines Fahrzeugluftreifens, wobei die innere Festigkeitsträgerlage zwischen einer ersten Gummikomponente des Kernprofils und einer zweiten Gummikomponente des Kernprofils angeordnet ist,

und/oder

• - einer äußeren Festigkeitsträgerlage in einem Fahrzeugluftreifen, wobei die äußere Festigkeitsträgerlage ausschließlich ein oder das Kernprofil des Fahrzeugluftreifens rotationssymmetrisch zur axialen Achse des Fahrzeugluftreifens umschließt,

des Handlings des Fahrzeugluftreifens und/oder des Rollwiderstands des Fahrzeugluftreifens.The invention also relates to a use

• an inner reinforcement layer in a core profile of a pneumatic vehicle tire, the inner reinforcement layer being arranged between a first rubber component of the core profile and a second rubber component of the core profile,

and or

• an outer reinforcement layer in a pneumatic vehicle tire, the outer reinforcement layer exclusively enclosing one or the core profile of the pneumatic vehicle tire in a rotationally symmetrical manner with respect to the axial axis of the pneumatic vehicle tire,

the handling of the pneumatic vehicle tire and / or the rolling resistance of the pneumatic vehicle tire.

• - einer inneren Festigkeitsträgerlage in einem Kernprofil eines Fahrzeugluftreifens, wobei die innere Festigkeitsträgerlage zwischen einer ersten Gummikomponente des Kernprofils und einer zweiten Gummikomponente des Kernprofils angeordnet ist,

und/oder

• - einer äußeren Festigkeitsträgerlage in einem Fahrzeugluftreifen, wobei die äußere Festigkeitsträgerlage ausschließlich ein oder das Kernprofil des Fahrzeugluftreifens rotationssymmetrisch zur axialen Achse des Fahrzeugluftreifens umschließt,

zur Verbesserung der Steifigkeit des Fahrzeugluftreifens und/oder des Handlings des Fahrzeugluftreifens und/oder des Rollwiderstands des Fahrzeugluftreifens.The invention also relates to a use

• an inner reinforcement layer in a core profile of a pneumatic vehicle tire, the inner reinforcement layer being arranged between a first rubber component of the core profile and a second rubber component of the core profile,

and or

• an outer reinforcement layer in a pneumatic vehicle tire, the outer reinforcement layer exclusively enclosing one or the core profile of the pneumatic vehicle tire in a rotationally symmetrical manner with respect to the axial axis of the pneumatic vehicle tire,

to improve the rigidity of the pneumatic vehicle tire and / or the handling of the pneumatic vehicle tire and / or the rolling resistance of the pneumatic vehicle tire.

• - einer inneren Festigkeitsträgerlage in einem Kernprofil eines Fahrzeugluftreifens, wobei die innere Festigkeitsträgerlage zwischen einer ersten Gummikomponente des Kernprofils und einer zweiten Gummikomponente des Kernprofils angeordnet ist,

und/oder

• - einer äußeren Festigkeitsträgerlage in einem Fahrzeugluftreifen, wobei die äußere Festigkeitsträgerlage ausschließlich ein oder das Kernprofil des Fahrzeugluftreifens rotationssymmetrisch zur axialen Achse des Fahrzeugluftreifens umschließt,

des Handlings des Fahrzeugluftreifens und/oder des Rollwiderstands des Fahrzeugluftreifens.The invention also relates to a use

• an inner reinforcement layer in a core profile of a pneumatic vehicle tire, the inner reinforcement layer being arranged between a first rubber component of the core profile and a second rubber component of the core profile,

and or

• an outer reinforcement layer in a pneumatic vehicle tire, the outer reinforcement layer exclusively enclosing one or the core profile of the pneumatic vehicle tire in a rotationally symmetrical manner with respect to the axial axis of the pneumatic vehicle tire,

the handling of the pneumatic vehicle tire and / or the rolling resistance of the pneumatic vehicle tire.

• - einer inneren Festigkeitsträgerlage in einem Kernprofil eines Fahrzeugluftreifens, wobei die innere Festigkeitsträgerlage zwischen einer ersten Gummikomponente des Kernprofils und einer zweiten Gummikomponente des Kernprofils angeordnet ist,

und/oder

• - einer äußeren Festigkeitsträgerlage in einem Fahrzeugluftreifen, wobei die äußere Festigkeitsträgerlage ausschließlich ein oder das Kernprofil des Fahrzeugluftreifens rotationssymmetrisch zur axialen Achse des Fahrzeugluftreifens umschließt,

zur Verbesserung der Steifigkeit des Fahrzeugluftreifens und/oder des Handlings des Fahrzeugluftreifens.The invention also relates to a use

• an inner reinforcement layer in a core profile of a pneumatic vehicle tire, the inner reinforcement layer being arranged between a first rubber component of the core profile and a second rubber component of the core profile,

and or

• an outer reinforcement layer in a pneumatic vehicle tire, the outer reinforcement layer exclusively enclosing one or the core profile of the pneumatic vehicle tire in a rotationally symmetrical manner with respect to the axial axis of the pneumatic vehicle tire,

to improve the rigidity of the pneumatic vehicle tire and / or the handling of the pneumatic vehicle tire.

list of figures

• 1a: Querschnittsansicht eines schematisch dargestellten Kernprofils eines erfindungsgemäßen Fahrzeugluftreifens, wobei die inneren Festigkeitsträgerlagen und die den Reifenwulst umhüllende äußere Festigkeitsträgerlage dargestellt sind;
• 1b: Querschnitt eines schematisch dargestellten Kernprofils eines erfindungsgemäßen Fahrzeugluftreifens, wobei die inneren Festigkeitsträgerlagen und die den Reifenwulst umhüllende äußere Festigkeitsträgerlage dargestellt sind und eine seitlich oder in radiale Richtung wirkende Kraft auf das schematisch dargestellte Kernprofil einwirkt;
• 2: Perspektivische Ansicht auf einen schematisch dargestellten Reifenwulst eines erfindungsgemäßen Fahrzeugluftreifens mit gummierten Korden als Festigkeitsträgerlage des Kernprofils;
• 3: Perspektivische Ansicht auf einen schematisch dargestellten Reifenwulst eines erfindungsgemäßen Fahrzeugluftreifens mit gummierten Streifen aus Metall als Festigkeitsträgerlage des Kernprofils;
• 4: Querschnitt eines Fahrzeugluftreifens mit nach axial außen neigenden Spitzen der zwei Kernprofile des Fahrzeugluftreifens, wobei die Querschnittsebene senkrecht zur Umlaufsrichtung des Fahrzeugluftreifens verläuft.

It shows:

• 1a : Cross-sectional view of a schematically illustrated core profile of a pneumatic vehicle tire according to the invention, the inner reinforcement layers and the outer reinforcement layer enveloping the tire bead being shown;
• 1b : Cross section of a schematically illustrated core profile of a pneumatic vehicle tire according to the invention, the inner reinforcement layers and the outer reinforcement layer enveloping the tire bead being shown and a force acting laterally or in the radial direction acting on the schematically illustrated core profile;
• 2 : Perspective view of a schematically illustrated tire bead of a pneumatic vehicle tire according to the invention with rubberized cords as the reinforcement layer of the core profile;
• 3 : Perspective view of a schematically illustrated tire bead of a pneumatic vehicle tire according to the invention with rubberized strips of metal as the reinforcement layer of the core profile;
• 4 : Cross-section of a pneumatic vehicle tire with tips of the two core profiles of the pneumatic vehicle tire, which tips axially outwards, the cross-sectional plane running perpendicular to the circumferential direction of the pneumatic vehicle tire.

1a shows a schematic representation of a tapering cross-sectional profile 11 a core profile of a pneumatic vehicle tire according to the invention, the cross-sectional plane perpendicular to the circumferential direction 13 of the pneumatic vehicle tire according to the invention. You can see the middle part 21 of the core profile and the top 22 of the tapered cross-sectional profile 11 of the core profile. The middle part 21 is made up of various core profile elements 6 and one of the core profile elements 6 circumferential outer reinforcement layer 5 formed with the core profile elements 6 made of rubber components 7 and inner reinforcement layers 4 are composed and the rubber components 7 and inner reinforcement layers 4 lie alternately one above the other in the radial direction. The inner reinforcement layers 4 include rubberized steel cords 8th , The outer reinforcement layer 5 preferably has cords or metallic strips (in 1 not shown) and an inner side 31 and an outer side 30 on, with the inner and outer sides 31 . 30 also parallel to the plane 17 the outer reinforcement layer 5 run in the cords of the outer reinforcement layer 5 run. Each of the inner reinforcement layers 4 has two faces each 16 on which normal vectors can be formed, which in 1 parallel or anti-parallel to the radial direction 14 would run. One of the possible normal vectors 34 is in 1a drawn in and runs antiparallel to the radial direction 14 , This normal vector 34 forms at the point of contact 37 a deviation angle a 23 with the plane 17 the outer reinforcement layer 5 , where the point of contact 37 is the point at which the inner reinforcement layer 4 on the outer reinforcement layer 5 meets.

This in 1a The core profile shown is not prestressed and therefore mirror-symmetrical. The rubber components 7 of the core profile shown therefore have a cross-sectional profile in the form of a symmetrical trapezoid.

1b shows a schematic representation of a tapering cross-sectional profile 11 a core profile of a pneumatic vehicle tire according to the invention, the cross-sectional plane perpendicular to the circumferential direction 13 of the pneumatic vehicle tire according to the invention runs and a laterally acting force 20 acts on the core profile. You can see the middle part 21 of the core profile and the top 22 of the tapered cross-sectional profile 11 of the core profile. The middle part 21 is made up of various core profile elements 6 and one of the core profile elements 6 circumferential outer reinforcement layer 5 formed with the core profile elements 6 made of rubber components 7 and inner reinforcement layers 4 are alternately superimposed in the radial direction. The inner reinforcement layers 4 include rubberized steel cords 8th , The outer reinforcement layer 5 preferably has cords or metallic strips (in 1 not shown) and an inner side 31 and an outer side 30 on, with the inner and outer sides 31 . 30 also parallel to the plane 17 the outer reinforcement layer 5 run in the cords of the outer reinforcement layer 5 run. Each of the inner reinforcement layers 4 has two faces each 16 on which normal vectors can be formed, which in 1 parallel or anti-parallel to the radial direction 14 would run.

It is clearly recognizable in 1b that the acting force 20 causes the levels 17 the outer reinforcement layer 5 be bent and thereby a tense side surface 18 and a compressed side surface 19 arises. Reinforcement layers, especially rubberized textile or metallic cords 8th , develop a force opposite to the deformation when deformed. This is one reason why the lateral force 20 through an in 1b core profile shown can be intercepted better than in the case of core profiles known in the prior art and thus the Stiffness of the core profile of a pneumatic vehicle tire according to the invention improved. In addition, the connections between the inner reinforcement layers improve 4 and the outer reinforcement layer 5 as well as the rubberized textile or metallic cords 8th the rigidity of the core profile of a pneumatic vehicle tire according to the invention in or against the axial direction 15 , The deformation of the core profile due to the acting force 20 is also done so that the middle part 21 towards the acting force 20 is pressed, the positions of the tip 22 and the core due to the arrangement of the rubber components and inner reinforcement layers 4 however, do not change significantly. This effect is additionally due to the outer reinforcement layer 5 strengthens and improves the handling of pneumatic vehicle tires to a particular degree.

The increased degree of rigidity of a core profile of a pneumatic vehicle tire according to the invention, as in FIG 1b shown quantify and make visible by looking at the radians of a compressed or a tense side of a core profile of a pneumatic vehicle tire according to the invention with a certain force. The further the core profile is stretched, the greater the force that has to be applied in order to further tension this core profile. The radians should be as in 1b shown by measuring the length of the linear measure 127 , ie the length from the transition between the core and the middle section 21 of the core profile to the top 22 the core profile of a pneumatic vehicle tire according to the invention, and by measuring the length of the radius r 26 at the tip 22 and the radius r 26 at the transition from the core to the middle part 21 of the core profile can be determined, each radius r 26 perpendicular to the length dimension 127 is at the respective point of contact. The length of each radius r 26 is determined by its point of contact with the length dimension 127 measured up to the intersection with the other radius r 26, the intersection being the center of the circle 36 represents which would result from extrapolation of the respective length dimension. The radian is ultimately determined by the quotient described above 1 / r calculated.

This in 1b The core profile shown could also correspond to a prestressed core profile which corresponds to that in 1b shown form even without the acting force 20 having. This would result in an even higher rigidity with an acting force corresponding to the acting force 20 for the core profile. Such a pre-stressed core profile as in 1b shown therefore corresponds to a particular embodiment of the present invention.

2 shows a schematic representation of a perspective view of a tire bead 12 of a pneumatic vehicle tire according to the invention, the tire bead 12 is cut at various points so that the individual components and in particular the individual core profile elements 6 of the tire bead 12 are evident. An embodiment of the tire bead 12 of a pneumatic vehicle tire according to the invention comprises as in 2 shown a nucleus 3 various core profile elements 6 and an outer reinforcement layer 5 which is the core 3 and the different core profile elements 6 fully encloses. The core profile 2 preferably completely encloses the core 3 rotationally symmetrical to axial direction 15 of the pneumatic vehicle tire. There in 2 however only a section of the tire bead 12 is shown, this is in 2 not apparent. That over the core 3 arranged core profile element 6 is a first rubber component 7 which is half the core 3 enclosing cross-sectional profile. Over the first rubber component 7 three inner reinforcement layers follow alternately 4 and a second and a third rubber components 7 , the second and third rubber components 7 have a square cross-sectional profile. Above the last of these three inner reinforcement layers 4 is a fourth rubber component 7 arranged with a triangular cross-sectional profile, which is also the tip 22 of the tapered cross-sectional profile 11 of the core profile 2 having. Each of said 3 inner reinforcement layers 4 includes rubberized steel cords 8th which are parallel to the circumferential direction 13 run, and two surfaces each 16 which are perpendicular to the radial direction 14 run. These two faces 16 of each inner reinforcement layer 4 have different normal vectors, one of these normal vectors 34 in 2 is shown as an example. Along with the plane 17 the outer reinforcement layer 5 forms a normal vector of an inner reinforcement layer 4 at the point of contact with the outer reinforcement layer 5 the deviation angle a, which in 2 is not shown.

3 shows a schematic representation of a perspective view of a tire bead 12 of a pneumatic vehicle tire according to the invention, the tire bead 12 is cut at various points so that the individual components and in particular the individual core profile elements 6 of the tire bead 12 are evident. An embodiment of the tire bead 12 of a pneumatic vehicle tire according to the invention comprises as in 3 shown a nucleus 3 various core profile elements 6 and an outer reinforcement layer 5 which is the core 3 and the different core profile elements 6 fully encloses. The core profile 2 preferably completely encloses the core 3 rotationally symmetrical to the axial direction 15 of the pneumatic vehicle tire. There in 3 however only a section of the tire bead 12 is shown, this is in 3 not apparent.

That over the core 3 arranged core profile element 6 is a first rubber component 7 which is half the core 3 enclosing cross-sectional profile. Over the first rubber component 7 three inner reinforcement layers follow alternately 4 and a second and a third rubber components 7 , the second and third rubber components 7 have a square cross-sectional profile. Above the last of these three inner reinforcement layers 4 is a fourth rubber component 7 arranged with a triangular cross-sectional profile, which is also the tip 22 of the tapered cross-sectional profile 11 of the core profile 2 having. Each of said 3 inner reinforcement layers 4 includes rubberized steel strips 9 which are parallel to the circumferential direction 13 run, and two surfaces each 16 which are perpendicular to the radial direction 14 run. These two faces 16 of each inner reinforcement layer 4 have different normal vectors, four of these normal vectors 34 in 3 are shown as examples. Along with the plane 17 the outer reinforcement layer 5 forms a normal vector of an inner reinforcement layer 4 at the point of contact with the outer reinforcement layer 5 the deviation angle a 23. In addition, in 3 also the width 29 and the thickness 28 of the strip 9 the inner reinforcement layer 4 shown schematically.

4 shows a schematic representation of a cross section of a pneumatic vehicle tire according to the invention, the pneumatic vehicle tire according to the invention 1 two prestressed core profiles 2 has and the cross-sectional plane perpendicular to the circumferential direction 13 runs. The core 3 and the core profile 2 in each bead of the pneumatic vehicle tire 1 are from the carcass 10 each enclosed from the inside to the outside. Are shown in 4 also the rim 32 with the rim flanges 33 on which the vehicle tire 1 rests. Furthermore, the various rubber components, inner reinforcement layer and the outer reinforcement layer of the respective core profile 2 as well as the top 22 of the core profile 2 shown. In 4 encompasses the inner side facing the tire interior 31 the outer reinforcement layer 5 of every core profile 2 the tense side surface 18 , The outer to the rim flange 33 facing side 30 the outer reinforcement layer 5 of every core profile 2 includes the compressed side surface 19 , Because the two tips 22 of the respective core profile 2 away from the tire center line, ie tilting axially outwards and thus pointing in opposite directions, the lateral forces acting in both right-hand and left-hand corners can each come from the one preloaded core profile 2 or the other pre-stressed core profile 2 be better intercepted. This is a particular advantage of this embodiment of the invention.

LIST OF REFERENCE NUMBERS

1

Vehicle tires

2

apex

3

core

4

inner reinforcement layer in a flat shape

5

outer reinforcement layer in a flat shape

6

Core profile element

7

rubber component

8th

rubberized textile or metallic cords; rubberized round wire; rubberized steel cords

9

rubberized strips of metal or an alloy; rubberized flat wire; rubberized steel strips

10

Carcass; ply

11

tapered cross-sectional profile of the core profile of the vehicle tire

12

tire

13

Circumferential direction of the pneumatic vehicle tire

14

radial direction of the pneumatic vehicle tire

15

axial direction of the pneumatic vehicle tire

16

Area of the inner reinforcement layer

17

Plane of the outer reinforcement layer; Level in which the cords of the outer reinforcement layer run

18

tensioned side surface of the outer reinforcement layer

19

compressed side surface of the outer reinforcement layer

20

lateral force

21

Middle part of the core profile

22

Top of the tapered cross-sectional profile of the core profile

23

Deviation angle a

24

Deviation angle b

25

Deviation angle c

26

Radius r for calculating the radians

27

measure of length 1 to calculate the radians

28

The thickness of the strip of the inner reinforcement layer

29

Width of the strip of the inner reinforcement layer

30

outer side of the outer reinforcement layer

31

inner side of the outer reinforcement layer

32

rim

33

rim flange

34

Normal vector of a surface of the inner reinforcement layer

35

Tire centerline

36

Circle center

37

Point of contact of the strip with the outer reinforcement layer, to form the maximum deviation angle a

Claims (15)

Pneumatic vehicle tire with at least one bead (12) comprising both a core (3) and a core profile (2), the core profile (2) enclosing the core (3) rotationally symmetrically to the axial axis (15) of the pneumatic vehicle tire (1) and in the Radial sectional view has a tapering cross-sectional profile (11), the core profile (2) consisting of at least three core profile elements (6), characterized in that the three core profile elements (6) have a first rubber component (7), a second rubber component (7 ) and an inner reinforcement layer (4). Pneumatic vehicle tires after Claim 1 , wherein an outer reinforcement layer (5), preferably consisting of rubberized or ungummed textile cords (8), - surrounds the core profile (2) or - the core profile (2) and the core (3) at least partially, preferably completely. Pneumatic vehicle tire according to one of the preceding claims, wherein the at least one inner reinforcement layer (4) has a flat shape and / or spatially separates the individual rubber components (7) of the core profile (2), a normal vector of a surface of the at least one inner reinforcement layer (4 ) is preferably substantially parallel to the radial direction (14) of the pneumatic vehicle tire (1). Pneumatic vehicle tire according to one of the preceding claims, wherein at least one inner reinforcement layer (4) has rubberized cords (8), the cords (8) preferably being made of textile or metal, such as steel, and wherein the rubberized cords (8) of one or the at least one inner reinforcement layer (4) preferably runs essentially parallel to the circumferential direction (13) of the pneumatic vehicle tire (1). Pneumatic vehicle tire according to one of the preceding claims, wherein at least one of the inner reinforcement layers (4) has at least three or at least four rubberized cords (8). Pneumatic vehicle tire according to one of the preceding claims, wherein at least one of the inner reinforcement layers (4) comprises a rubberized strip (9) made of a textile fabric, of metal or of an alloy. Pneumatic vehicle tires after Claim 6 , wherein the width of one or all of the strips (9) of the inner reinforcement layer (4) decreases from the core (3) of the tire bead (12) in the direction of the tread of the pneumatic vehicle tire (1). Pneumatic vehicle tires after Claim 6 or after Claim 7 , wherein the strips (8) of the rubberized strips (8) are coated with brass and / or a sulfur-based coupling agent. Pneumatic vehicle tires according to one of the Claims 2 to 8th , wherein the outer reinforcement layer (5) is at least partially, preferably completely, surrounded by at least one carcass ply (10) and / or the at least three core profile elements (6) have more than one inner reinforcement layer (4) and the majority or all of the more than one inner reinforcement layer (4) of the core profile (2) run essentially parallel to one another. Pneumatic vehicle tire according to one of the preceding claims, wherein a rubber component (7) of the core profile (2), the majority of the rubber components (7) of the core profile (2) or all rubber components (7) of the core profile (2) have the shape of a cylinder with a polygonal cross section exhibit. Pneumatic vehicle tire according to one of the preceding claims, wherein the pneumatic vehicle tire (1) - a commercial vehicle pneumatic tire and / or - a passenger car pneumatic tire with an approved maximum speed of at least 200 km / h. Pneumatic vehicle tire according to one of the preceding claims, wherein the tip (22) of the tapering cross-sectional profile (11) of the core profile (2) slopes axially outwards. A method of manufacturing a pneumatic vehicle tire (1), comprising the following steps: a) Providing or manufacturing a core profile (2) according to one of the preceding claims, preferably according to the Claims 3 to 12 , b) Optional enclosing of the core profile (2) prepared or produced in step a) with an outer reinforcement layer (5) Claim 2 , c) installation of the core profile (2) prepared or produced in step a) or enclosed in step b) in a green tire, and d) further processing of the green tire into a pneumatic vehicle tire (1). Procedure according to Claim 13 , wherein the method comprises step b) and additionally before step d) and after step c) the step spanning): span) tensioning one or both outer sides (18, 19) of the outer reinforcement layers so that the tip (22) of the tapering cross-sectional profile (11) of the core profile (2) tilts axially outwards and / or the outer reinforcement layer (5) has a tensioned side (18). use - An inner reinforcement layer (4) in a core profile (2) of a pneumatic vehicle tire (1), the inner reinforcement layer (4) between a first rubber component (7) of the core profile (2) and a second rubber component (7) of the core profile (2) is arranged, and / or - An outer reinforcement layer (5) in a pneumatic vehicle tire (1), the outer reinforcement layer (5) exclusively one or the core profile (2) of the pneumatic vehicle tire (1) or only one or the core profile (2) together with the core (3) of the pneumatic vehicle tire (1), to improve the rigidity of the pneumatic vehicle tire (1) and the handling of the pneumatic vehicle tire (1) and the rolling resistance of the pneumatic vehicle tire (1).

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