DE102020134609A1 - TIRE - Google Patents

Abstract

A pneumatic tire (PT) comprises: a central block assembly (10) arranged in a central area of a tread (Tr) in the tire width direction and having a plurality of aligned central blocks (1), a pair of shoulder block assemblies (20 and 30) ), which are arranged in the tire width direction at respective ends of the tread (Tr) and each have a plurality of shoulder blocks (2 and 3), and a pair of area block assemblies (40 and 50) respectively between the central block assembly (10) and the pair of shoulder block assemblies (20 and 30) each having a plurality of aligned area blocks (4 and 5). A plurality of area blocks (5) and a plurality of shoulder blocks (3) are aligned on an outer side of one of the central blocks (1) when mounted on a vehicle. A vehicle mounting outer region (Ao) has a transverse range groove (51) which is arranged on an extension of a groove center line of a central transverse groove (11), and has a shoulder transverse groove (31) which is arranged on an extension of a groove center line of the transverse range groove (51) is arranged.

Description

TECHNICAL AREA

The present invention relates to a pneumatic tire.

RELATED ART STATEMENT

A pneumatic tire for winter needs good traction properties or traction performance on icy or snow-covered roads. With a pneumatic tire for the winter it is also important to ensure drainage properties.

Patent Document 1 describes a pneumatic tire that has a single central block extending over three or more second blocks in the tire circumferential direction. This configuration leads to a reduction in the groove area in a central area of a tread in the tire width direction to improve braking properties and cornering properties on icy road surfaces. However, the central block has never been improved over the prior art except for its length in the tire circumferential direction.

PRIOR ART DOCUMENTS

Patent documents

Japanese Patent Document 1: JP 2006-232 151A

BRIEF DESCRIPTION OF THE INVENTION

PROBLEMS TO BE SOLVED WITH THE INVENTION

The object of the present invention is to provide a pneumatic tire with which drainage properties are ensured and, furthermore, an improvement in traction properties on icy or snow-covered roads is achieved.

MEANS TO SOLVE THE PROBLEMS

• - eine zentrale Blockanordnung, die in einem in Reifenbreitenrichtung zentralen Bereich einer Lauffläche angeordnet ist und eine Vielzahl von zentralen Blöcken aufweist, die in Reifenumfangsrichtung ausgerichtet sind und zwischen denen zentrale Quernuten angeordnet sind;
• - ein Paar von Schulterblockanordnungen, die in der Reifenbreitenrichtung an jeweiligen Enden der Lauffläche angeordnet sind und jeweils eine Vielzahl von Schulterblöcken aufweisen, die in der Reifenumfangsrichtung ausgerichtet sind und zwischen denen Schulterquernuten angeordnet sind; und
• - ein Paar von Bereichsblockanordnungen, die zwischen der zentralen Blockanordnung und dem Paar der Schulterblockanordnungen angeordnet sind und jeweils eine Vielzahl von Bereichsblöcken aufweisen, die in der Reifenumfangsrichtung ausgerichtet sind und zwischen denen Bereichsquernuten angeordnet sind;
• - wobei die Vielzahl von Bereichsblöcken und die Vielzahl von Schulterblöcken auf einer bei Montage an einem Fahrzeug äußeren Seite von einem der zentralen Blöcke ausgerichtet sind und wobei die Lauffläche eine bei Montage an einem Fahrzeug äußere Region bzw. Fahrzeugmontage-Außenregion aufweist, in der eine entsprechende der Bereichsquernuten auf einer Verlängerung einer Nutmittellinie einer jeweiligen zentralen Quernut angeordnet ist und eine entsprechende der Schulterquernuten auf einer Verlängerung einer Nutmittellinie der entsprechenden Bereichsquernut angeordnet ist.

The present invention provides a pneumatic tire having a designated mounting direction on a vehicle, the pneumatic tire comprising:

• a central block arrangement which is arranged in a central region of a tread in the tire width direction and has a plurality of central blocks which are aligned in the tire circumferential direction and between which central transverse grooves are arranged;
• a pair of shoulder block assemblies which are arranged in the tire width direction at respective ends of the tread and each have a plurality of shoulder blocks which are aligned in the tire circumferential direction and between which shoulder transverse grooves are arranged; and
• a pair of area block assemblies disposed between the central block assembly and the pair of shoulder block assemblies and each having a plurality of area blocks which are aligned in the tire circumferential direction and between which area transverse grooves are arranged;
• - wherein the plurality of area blocks and the plurality of shoulder blocks are aligned on an outer side of one of the central blocks when mounted on a vehicle, and wherein the tread has a vehicle-mounted outer region in which a corresponding one of the transverse region grooves is arranged on an extension of a groove center line of a respective central transverse groove and a corresponding one of the shoulder transverse grooves is arranged on an extension of a groove center line of the corresponding transverse region groove.

Figure list

• 1 eine Draufsicht zur exemplarischen Erläuterung einer Lauffläche eines Luftreifens gemäß der vorliegenden Erfindung;
• 2 eine Draufsicht zur Erläuterung eines Hauptteils einer bei Montage an einem Fahrzeug äußeren Region; und
• 3 eine Draufsicht zur Erläuterung eines Hauptteils einer bei Montage an einem Fahrzeug inneren Region.

In the drawings show:

• 1 a plan view exemplifying a tread of a pneumatic tire according to the present invention;
• 2 Fig. 13 is a plan view showing a main part of an outer region when mounted on a vehicle; and
• 3 Fig. 13 is a plan view showing a main part of an interior region when mounted on a vehicle.

MODE FOR CARRYING OUT THE INVENTION

An embodiment of the present invention will be described below with reference to the drawings.

1 shows a developed plan view of a tread Tr a pneumatic tire PT (hereinafter also simply referred to as “tire PT”) according to the present embodiment. 1 has a vertical direction that corresponds to the tire circumferential direction and has a lateral or horizontal direction that corresponds to the tire width direction. As in 1 shown is the tread Tr equipped with a profile pattern in the form of a block pattern.

The pneumatic tire PT according to the present embodiment is of a designated mounting direction type in which a designated mounting direction is indicated on a vehicle. 1 shows an arrow OUTSIDE, which indicates an outward-facing mounting direction on a vehicle, and an arrow IN, which indicates an inward-facing mounting direction on a vehicle. In relation to a tire equator TE shows 1 a right region as a vehicle assembly outer region Ao in the tread Tr and a left region as a vehicle assembly inner region Ai in the tread Tr on.

When the tire PT is mounted on the vehicle, the vehicle-mounting outer region Ao faces the outside of the vehicle and the vehicle-mounting inner region Ai faces the inside of the vehicle. The mounting direction is indicated by such an indication as “OUTSIDE” or “INNER” on an outer surface of a sidewall of the tire PT.

The pneumatic tire PT has a central block arrangement 10 that is in the tire width direction in a central area of the tread Tr is arranged and a plurality of central blocks 1 which are aligned in the tire circumferential direction and between which central transverse grooves 11 are arranged a pair of shoulder blocks 20th and 30th in the tire width direction at respective ends of the tread Tr are arranged and in each case a plurality of shoulder blocks 2 and 3 have, which are aligned in the tire circumferential direction and between which shoulder transverse grooves 21 or. 31 and a pair of area block arrays 40 and 50 between the central block arrangement 10 and the pair of shoulder block assemblies 20th and 30th are arranged and each has a plurality of area blocks 4th and 5 which are aligned in the tire circumferential direction and area transverse grooves between them 41 or. 51 are arranged. The central block arrangement 10 is at the tire equator TE arranged.

The five blocks 10 to 50 are through four circumferential grooves 61 to 64 which extend in a continuous manner in the tire circumferential direction. A circumferential groove that forms a block arrangement is formed as a main groove or a groove with a depth equal to or more than 50% of the depth of the main groove.

The three circumferential grooves 61 des 63 are formed as main grooves in the present embodiment. The circumferential groove 64 is not designed as a main groove, but has a depth that is equal to or more than 50% of the depth of one of the main grooves (e.g. the circumferential groove 62 ) is.

The circumferential groove 64 is less deep than the main grooves, the depth of which in the present embodiment corresponds to 50% to 85% of the depth of one of the main grooves. The central block arrangement 10 is through the circumferential groove 62 and the circumferential groove 64 formed, the one another with the interposition of the tire equator TE facing opposite are arranged.

According to the present embodiment, the circumferential groove has 64 who have favourited the central block arrangement 10 and the area block arrangement 50 in the vehicle mounting outer region Ao, forms a width W64 that is less than the width W62 of the circumferential groove 62 who have favourited the central block arrangement 10 and the area block arrangement 40 forms in the vehicle assembly interior region Ai.

The width W64 is, by way of example, equal to or less than 3.0 mm and is in particular specified at 1.2 mm to 1.8 mm. The width W64 is in an exemplary manner equal to or more than 0.9% of the ground contact width CW. By way of example, the width W62 is equal to or more than 3% of the ground contact width CW. The width W61 and the width W63 of the circumferential groove 63 are in an exemplary manner equal to or more than 4% of the ground contact width CW.

The ground contact width CW corresponds to the width of a ground contact area in a case where the tire PT is mounted on an ordinary rim and inflated to a normal internal pressure and placed vertically on a flat road surface and receives a normal load. A ground contact end CE corresponds to an outermost position of the ground contact surface in the tire width direction.

The ground contact width CW thus has a distance measured in the tire width direction between a pair of the ground contact ends CE. The grooves and the blocks and sipes each have a dimension measured in a state in which the tire is mounted on the usual rim, inflated to the normal internal pressure and not subjected to any load.

The usual rim is a rim that is defined for the respective tire by a standard in a standard system that includes the standard for the tire. For example, the usual rim corresponds to a normal rim as defined by JATMA and a “measuring rim” as defined by TRA and ETRTO. The normal internal pressure is an air pressure that is defined for the respective tire by a respective standard in a standard system that includes the standard for the tire.

The normal internal pressure corresponds to a maximum air pressure as defined by JATMA, a maximum value as specified in the table provided by the TRA with the designation "Tire load limits for various cold tire inflation pressures", and the "tire inflation pressure" as defined by the ETRTO.

Assume that the normal internal pressure is 180 kPa for a car tire and 220 kPa for a tire specified for additional load or as reinforced. The normal load is a load that is defined for the respective tire by a respective standard in a standard system that includes the standard for the tire.

The normal load corresponds to the maximum load capacity as defined by JATMA, a maximum value as specified in the above table by the TRA, as well as the "load capacity" as defined by the ETRTO. The normal load for a car tire is set at 88% of a load that corresponds to the internal pressure.

The central blocks 1 are each made longer in the tire circumferential direction than in the tire width direction. The shoulder blocks formed in pairs 2 and 3 as well as the area blocks formed in pairs 4th and 5 are shorter in the tire circumferential direction than in the tire width direction.

The central blocks 1 who have favourited the paired shoulder blocks 2 and 3 as well as the area blocks formed in pairs 4th and 5 each have a rectangular shape (square shape) in plan view. However, the respective blocks are not limited to such a shape, but may alternatively have any of various other shapes.

The central blocks 1 are each with a large number of slats 12th educated. The slats 12th are each formed by a cut-away portion having a width of equal to or less than 1.0 mm. To improve the traction properties on icy road surfaces, the sipes point 12th an inclination angle θ12 (see 2 ) to the tire width direction, which is preferably equal to or less than 45 ° and more preferably equal to or less than 30 °.

The slats 12th each have a wavy shape. However, the respective slats are 12th not limited to such a shape, but they can alternatively also have a linear shape. The slats 12th are closed at both ends. However, one or each of the ends may alternatively be connected to the circumferential groove 62 or 64 or to one of the central transverse grooves 11 be open.

The respective slats 12th may have a two-dimensional shape with no shape change in the depth direction, or they may have a three-dimensional shape in which a partial area has a different shape in the depth direction.

The shoulder blocks formed in pairs 2 and 3 have lamellae 22 and 32, respectively. The area blocks formed in pairs 4th and 5 have lamellae 42 and 52, respectively. According to the present embodiment, have the sipes arranged in the width direction in the central area 12th and the sipes 32 and 52 arranged in the vehicle-mounting outer region Ao have waveforms having a shorter wavelength than that of the sipes 22 and 42 arranged in the vehicle-mounting inner region Ai.

Thus, the vehicle mounting outer region Ao, which significantly contributes to the cornering properties, is improved in the edge effect in the tire width direction, and the vehicle mounting inner region Ai, which significantly contributes to the braking properties, is improved in the tire circumferential direction in the edge effect.

As in 2 As shown enlarged, are the plurality (three in the present embodiment) of area blocks 5 and the plurality (two in the present embodiment) of shoulder blocks 3 on an outer side of a respective central block when mounted on a vehicle 1 aligned. The central block 1 thus has a longer extension than the shoulder blocks in the tire circumferential direction 3 and the area blocks 5 on.

The shoulder transverse grooves 31 have an arrangement spacing (interval in the tire circumferential direction) P31 which, in an exemplary manner, is 35% to 55% of an arrangement spacing P11 of the central transverse grooves 11 corresponds to. The transverse area grooves 51 have an arrangement spacing P51 which, in an exemplary manner, is 25% to 35% of the arrangement spacing P11 of the central transverse grooves 11 corresponds to.

The central transverse grooves point in the vehicle assembly outer region Ao 11 one groove center line each CL1 on, which is in the extension not on a side surface of a corresponding one of the area blocks 5 meets, but on a corresponding one of the transverse grooves 51 meets.

Furthermore, the area has a transverse groove 51 (the area transverse groove 51 that are on the extension of the groove centerline CL1 the central transverse groove 11 lies) a groove center line CL5 that are in extension not on a side surface of a corresponding one of the shoulder blocks 3 meets, but on a corresponding one of the shoulder transverse grooves 31 meets.

The central transverse groove 11 , the transverse area groove 51 and the shoulder transverse groove 31 are thus designed such that they are connected on an identical line, thereby improving the drainage effect in the outward direction when mounted on a vehicle. Such a structure is particularly useful as the circumferential groove 64 in the present embodiment narrower and less deep than the main grooves, such as the circumferential groove 62 , is.

On icy road surfaces with a low coefficient of friction, the central area of the tread in the tire width direction faces Tr likely to have a relatively high ground contact pressure, and it contributes significantly to the traction properties or the traction performance. The central blocks arranged in the central area in the tire width direction 1 have a long extension in the tire circumferential direction, so that an increase in the length as well as the number of sipes 12th is achieved and in a corresponding manner an increase in the edge component of the lamellae 12th is achieved.

The edge effect of the slats 12th probably not exercising adequately if the central blocks are up 1 lean sharply at the start of movement. The central blocks formed long in the tire circumferential direction 1 are in the stiffness of the central blocks 1 improved so that excessive leaning is prevented when starting to move.

As described above, the edge component of the sipes 12th and there may be excessive tilting of the central blocks 1 be prevented at the start of movement in order to achieve an improvement in the traction properties or the traction performance on icy road surfaces. Further are the shoulder blocks 3 and the area blocks 5 relatively short in the tire circumferential direction, thereby reducing the number of shoulder transverse grooves 31 and the transverse area grooves 51 to ensure an improvement in traction properties on snow-covered road surfaces.

In addition, the central transverse grooves 11 , a corresponding one of the transverse area grooves 51 as well as a corresponding one of the shoulder transverse grooves 31 each designed in such a way that they are connected on an identical line, so that the drainage properties can be ensured.

The transverse area grooves 51 have relatively wide area transverse grooves 51a and relatively narrow area transverse grooves 51b, a single wider area transverse groove 51a and two narrower area transverse grooves 51b being alternately aligned with each other in the tire circumferential direction. One of the wider area transverse grooves 51a is in each case on the extension of the groove center line CL1 the respective central transverse grooves 11 arranged.

The shoulder transverse grooves 31 have shoulder transverse grooves 31b formed relatively wide and shoulder transverse grooves 31b formed relatively narrowly, the shoulder transverse grooves 31a and shoulder transverse grooves 31b being alternately aligned with each other in the tire circumferential direction. One of the wider shoulder transverse grooves 31a is in each case on the extension of the groove center line CL5 of the respective wider area transverse grooves 51a.

As in 3 shown enlarged, has one of the area transverse grooves in the vehicle-mounting inner region Ai 41 (one of the wider area transverse grooves 41a described below) a groove center line CL4 on that in the extension not on a side surface of a corresponding one of the shoulder blocks 2 meets, but on a corresponding one of the shoulder transverse grooves 21 meets.

The transverse area groove 41 and the shoulder transverse groove 21 are thus designed in such a way that they are connected on an identical line, so that the drainage effect can thereby be improved in the inward direction when mounted on a vehicle. The transverse area grooves 41 have the area transverse groove 41a formed relatively wide and the transverse area groove 41b formed relatively narrow, the transverse area groove 41a and the transverse area grooves 41b being alternately aligned with each other in the tire circumferential direction.

The groove center line meets in the vehicle assembly inner region A1 CL1 from each of the central transverse grooves 11 in their extension to a side surface of a corresponding one of the area blocks 4th .

The central transverse groove 11 and the transverse area groove 41 are therefore not designed in such a way that they are connected on an identical line. The central block arrangement 10 and the area block arrangement 40 have block edges which are arranged adjacent to transverse grooves and are offset in the tire circumferential direction. Such a configuration effectively prevents the generation of profile noise.

The central blocks 1 have a longer extension in the tire circumferential direction than the shoulder blocks 2 and the area blocks 4th . The shoulder transverse grooves 21 have an arrangement spacing P21 which, in an exemplary manner, is 35% to 55% of the arrangement spacing P11 (see 2 ) the central transverse grooves 11 corresponds to. The transverse area grooves 41 have an arrangement spacing P41 which, in an exemplary manner, is 25% to 35% of the arrangement spacing P11 of the central transverse grooves 11 corresponds to.

The shoulder blocks 2 and the shoulder blocks 3 have widths W2 and W3 that are greater than the width W1 of the central blocks 1 . Thus, they are shorter in the tire circumferential direction than the central blocks 11 trained shoulder blocks 2 and 3 does not have excessively small areas, so that cornering properties can be ensured in an effective manner. The width W1 is specified in an exemplary manner with 7% to 17% of the ground contact width CW.

The respective widths W2 and W3 are specified in an exemplary manner with 15% to 25% of the ground contact width CW. The area blocks formed in pairs 4th and 5 have widths W4 and W5 which are greater than the width W1 and are therefore similarly effective. The width W4 is specified in an exemplary manner with 13% to 23% of the ground contact width CW. The width W5 is given as an example with 14% to 24% of the ground contact width CW.

The pneumatic tire PT has such a different structure of the tread Tr , as described above, and exerts excellent traction properties on icy or snow-covered roads and thus can be used as a winter tire or an all-season tire. In the case of the pneumatic tire PT used as a winter tire, the tread is Tr formed of tread rubber material having a rubber hardness of 45 ° to 65 ° or so. This rubber hardness is measured at 23 ° C according to a JISK6253 durometer hardness test (type A).

• - eine zentrale Blockanordnung 10, die in Reifenbreitenrichtung in einem zentralen Bereich einer Lauffläche Tr angeordnet ist und eine Vielzahl von zentralen Blöcken 1 aufweist, die in Reifenumfangsrichtung ausgerichtet sind und zwischen denen zentrale Quernuten 11 angeordnet sind;
• - ein Paar von Schulterblockanordnungen 20 und 30, die in der Reifenbreitenrichtung an jeweiligen Enden der Lauffläche Tr angeordnet sind und jeweils eine Vielzahl von Schulterblöcken 2 und 3 aufweisen, die in der Reifenumfangsrichtung ausgerichtet sind und zwischen denen Schulterquernuten 21 bzw. 31 angeordnet sind; und
• - ein Paar von Bereichsblockanordnungen 40 und 50, die jeweils zwischen der zentralen Blockanordnung 10 und dem Paar der Schulterblockanordnungen 20 und 30 angeordnet sind und jeweils eine Vielzahl von Bereichsblöcken 4 und 5 aufweisen, die in der Reifenumfangsrichtung ausgerichtet sind und zwischen denen Bereichsquernuten 41 bzw. 51 angeordnet sind.

As described above, the present embodiment provides a pneumatic tire PT having a designated mounting direction on a vehicle, the pneumatic tire comprising:

• - a central block arrangement 10 in the tire width direction in a central area of a tread Tr is arranged and a plurality of central blocks 1 which are aligned in the tire circumferential direction and between which central transverse grooves 11 are arranged;
• - a pair of shoulder block assemblies 20th and 30th in the tire width direction at respective ends of the tread Tr are arranged and in each case a plurality of shoulder blocks 2 and 3 have, which are aligned in the tire circumferential direction and between which shoulder transverse grooves 21 or. 31 are arranged; and
• - a pair of area block arrays 40 and 50 , each between the central block arrangement 10 and the pair of shoulder block assemblies 20th and 30th are arranged and each have a plurality of area blocks 4th and 5 which are aligned in the tire circumferential direction and area transverse grooves between them 41 or. 51 are arranged.

The multitude of area blocks 5 as well as the multitude of shoulder blocks 3 are on an outer side of one of the central blocks when mounted on a vehicle 1 aligned, and the tread Tr has a vehicle assembly outer region Ao in which a corresponding one of the area transverse grooves 51 on an extension of a groove centerline CL1 a respective central transverse groove 11 is arranged and a corresponding one of the shoulder transverse grooves 31 on an extension of a groove centerline CL5 the corresponding transverse area groove 51 is arranged.

With such a tire PT, the edge component of the sipes can be increased 12th in the central blocks 1 achieve, and in addition, excessive tilting at the start of movement can be prevented, so that the traction properties can be improved on icy road surfaces. In addition, in the tire PT is the number of shoulder transverse grooves 31 and the transverse area grooves 51 ensured, so that an improvement in the traction properties on snow-covered road surfaces can be achieved.

There are also a respective one of the central transverse grooves 11 , a corresponding one of the transverse area grooves 51 and a corresponding one of the shoulder transverse grooves 31 designed in such a way that they are connected to one another on an identical line, so that the drainage properties can be ensured.

In the pneumatic tire PT according to the present embodiment, the circumferential groove has 64 who have favourited the central block arrangement 10 and the area block arrangement 50 in the vehicle mounting outer region forms the width W64 which is smaller than the width W62 of the circumferential groove 62 who have favourited the central block arrangement 10 and the area block arrangement 40 forms in the vehicle assembly outer region.

This configuration increases the rigidity in a region where both the central blocks 1 as well as the multitude (three in the present Embodiment) of area blocks 5 are arranged, and ensures an effective improvement of the traction properties on icy road surfaces.

In the tread Tr of the pneumatic tire PT according to the present embodiment, which is located in the vehicle mounting inner region, meets the groove center line CL4 from a corresponding one of the transverse area grooves 41 in their extension to a corresponding one of the shoulder transverse grooves 21 .

The transverse area groove 41 and the shoulder transverse groove 21 are designed to be connected on an identical line, so that the drainage effect in the inward direction when mounted on a vehicle can be improved.

In the tread Tr of the pneumatic tire PT according to the present embodiment, which is located in the vehicle mounting inner region, meets the groove center line CL1 a respective central transverse groove 11 in its extension onto the side surface of a corresponding one of the area blocks 4th . Thus, in the central block arrangement 10 and the area block arrangement 40 the block edges are placed adjacent to transverse grooves and offset in the tire circumferential direction, so that the development of tread noise can be effectively prevented.

In the tread Tr of the pneumatic tire PT according to the present embodiment located in the vehicle mounting outer region has the spacing P51 of the area transverse grooves 51 a value of 25% to 35% of the spacing P11 of the central transverse grooves 11 . The number of transverse area grooves 51 can thus be ensured to improve traction properties on snow-covered road surfaces.

The pneumatic tire PT may be constructed in a manner similar to a typical pneumatic tire, except for the tread formed as described above Tr , and it can adopt any materials, shapes, structures, manufacturing processes, and the like that are known in the art.

Although not shown, the pneumatic tire PT has a pair of beads, a pair of side walls which each extend outwardly from the beads in the tire radial direction, and a profile which is connected to the outer ends of the pair of side walls in the tire radial direction, wherein the profile has an outer circumferential surface as a tread Tr is trained.

The embodiment of the present invention has been described with reference to the drawings. However, the present embodiment is not intended to limit specific configurations according to the present invention. The present invention extends over a scope defined by the foregoing description of the embodiment and the claims, and further includes meanings equivalent to those of the claims and all modifications within this scope.

The pneumatic tire according to the present embodiment is not limited to either the above embodiment or the above-described functional effects. The pneumatic tire according to the present invention can be variously improved and modified in a scope not departing from the essential scope of the invention.

List of reference symbols

1

central block

2

Shoulder block

3

Shoulder block

4th

Area block

5

Area block

10

central block arrangement

11

central transverse groove

12th

Lamella

20th

Shoulder block arrangement

21

Shoulder transverse groove

30th

Shoulder block arrangement

31

Shoulder transverse groove

40

Area block arrangement

41

Area transverse groove

50

Area block arrangement

51

Area transverse groove

61

Circumferential groove

62

Circumferential groove

63

Circumferential groove

64

Circumferential groove

CL1

Groove center line

CL4

Groove center line

CL5

Groove center line

TE

Tire equator

Tr

Tread

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• JP 2006232151 A [0004]

Claims (8)

Pneumatic tire (PT) with a designated mounting direction on a vehicle, the pneumatic tire (PT) having: - A central block arrangement (10) which is arranged in a central region of a tread (Tr) in the tire width direction and has a plurality of central blocks (1) which are aligned in the tire circumferential direction and between which central transverse grooves (11) are arranged; - A pair of shoulder block assemblies (20 and 30) which are arranged in the tire width direction at respective ends of the tread (Tr) and each have a plurality of shoulder blocks (2 and 3) which are aligned in the tire circumferential direction and between which shoulder transverse grooves (21 or 31) are arranged; and a pair of area block assemblies (40 and 50) each disposed between the central block assembly (10) and the pair of shoulder block assemblies (20 and 30) and each having a plurality of area blocks (4 and 5, respectively) extending in the tire circumferential direction are aligned and between which area transverse grooves (41 or 51) are arranged, - wherein the plurality of area blocks (5) and the plurality of shoulder blocks (3) are aligned on an outer side of one of the central blocks (1) when mounted on a vehicle, and - wherein the tread (Tr) has a vehicle assembly outer region (Ao), in which a corresponding one of the area transverse grooves (51) is arranged on an extension of a groove center line (CL1) of a respective central transverse groove (11) and a corresponding one of the shoulder transverse grooves (31) is arranged on an extension of a groove center line (CL5) of the corresponding area transverse groove (51). Pneumatic tires (PT) Claim 1 wherein the central block assembly (10) and the area block assembly (50) are formed in the vehicle mounting outer region (Ao) by a circumferential groove (64) having a width (W64) smaller than the width (W62) of a circumferential groove (62) forming the central block assembly (10) and the area block assembly (40) in a vehicle assembly interior region (Ai). Pneumatic tires (PT) Claim 1 or 2 wherein the tread (Tr) has a vehicle mounting inner region (Ai) in which a corresponding one of the shoulder transverse grooves (21) is disposed on an extension of a groove center line (CL4) of a corresponding one of the area transverse grooves (41). Pneumatic tires (PT) according to one of the Claims 1 to 3 wherein the tread (Tr) has a vehicle mounting inner region (Ai) in which a side surface of a corresponding one of the side blocks (4) is located on the extension of the groove center line (CL1) of the respective central transverse grooves (11). Pneumatic tires (PT) according to one of the Claims 1 to 4th wherein in the tread (Tr) in the vehicle mounting outer region (Ao), the area transverse grooves (51) have a spacing (P51) corresponding to 25% to 35% of a spacing (P11) of the central transverse grooves (11). Pneumatic tires (PT) according to one of the Claims 1 to 5 wherein in the tread (Tr) in the vehicle mounting outer region (Ao), the shoulder transverse grooves (31) have a spacing (P31) which corresponds to 35% to 55% of a spacing (P11) of the central transverse grooves (11). Pneumatic tires (PT) according to one of the Claims 1 to 6th wherein the shoulder blocks (2 and 3) have widths (W2 and W3) which are greater than the width (W1) of the central blocks (1). Pneumatic tires (PT) according to one of the Claims 1 to 7th wherein the central blocks (1) are longer in the tire circumferential direction than in the tire width direction, and wherein the paired shoulder blocks (2 and 3) and the paired area blocks (4 and 5) are shorter in the tire circumferential direction than in the tire width direction.

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