阅读说明：本技术 车辆充气轮胎 (Pneumatic tire for vehicle ) 是由 斯特凡·里特韦格 于 2019-01-14 设计创作，主要内容包括：本发明涉及一种车辆充气轮胎,该车辆充气轮胎具有侧壁并且在至少一个侧壁上具有至少一个阴影线区域(1)或有阴影线的区域元件,其中,该阴影线区域(1)或该区域元件具有多个阴影线肋(2,2’,2”),该多个阴影线肋彼此相邻地延伸并且具有两个侧向侧面(3a,3’a,3”a,3b,3’b,3”b)。这些阴影线肋(2,2’,2”)的一个侧向侧面(3a,3’a,3”a)具有与这些阴影线肋(2,2’,2”)的另一个侧向侧面(3b,3’b,3”b)上的表面终饰不同的表面终饰。(The invention relates to a pneumatic vehicle tyre having side walls and having at least one hatched region (1) or hatched region element on at least one side wall, wherein the hatched region (1) or the hatched region element has a plurality of hatched ribs (2, 2', 2 ") which run adjacent to one another and have two lateral flanks (3a, 3' a, 3b, 3' b). One lateral side (3a, 3'a, 3 "a) of the hatched ribs (2, 2', 2") has a different surface finish than the surface finish on the other lateral side (3b, 3'b, 3 "b) of the hatched ribs (2, 2', 2").)

1. A pneumatic vehicle tyre having side walls and at least one hatched area (1) or hatched area element on at least one side wall, wherein the hatched area (1) or the area element has a plurality of hatched ribs (2, 2', 2 ") which extend adjacent to one another and have two lateral flanks (3a, 3' a, 3b, 3' b),

characterized in that one lateral side (3a, 3'a, 3 "a) of the hatched ribs (2, 2', 2") has a different surface finish than the surface finish on the other lateral side (3b, 3'b, 3 "b) of the hatched ribs (2, 2', 2").

2. A pneumatic tyre for vehicles as claimed in claim 1, characterized in that the side (3a, 3'a, 3 "a) with one surface finish of one hatched rib (2) faces the side (3a, 3' a, 3" a) with the other surface finish of the adjacent hatched rib (2) when viewing the hatched ribs (2) extending adjacent to each other.

3. A pneumatic tyre for vehicles as claimed in claim 1 or 2, characterized in that the surface finish of at least one lateral side (3a, 3'a, 3 "a) of the hatched ribs (2, 2', 2") is a three-dimensional structure.

4. A pneumatic tyre for vehicles as claimed in one of claims 1 to 3, characterized in that the surface finish of the two lateral sides (3a, 3'a, 3 "a) of the hatched ribs (2, 2', 2") is a three-dimensional structure.

5. A pneumatic vehicle tyre as claimed in claim 3 or 4, characterized in that the three-dimensional structure is constituted by a plurality of elevations and depressions, preferably formed directly adjacent to one another, having a height or depth of in particular 0.05mm to 0.8 mm.

6. A pneumatic tyre for vehicles as claimed in one of claims 3 to 5, characterized in that said three-dimensional structure covers said lateral side (3 a).

7. A pneumatic tyre for vehicles as claimed in claim 3 or 4, characterized in that the three-dimensional structure is constituted by additional ribs (6) extending parallel to one another and at right angles to the extent of the hatched ribs (2) and having a width (b) at the base of the additional ribs₂) In particular 0.1mm to 0.5 mm.

8. A pneumatic vehicle tyre as claimed in claim 7, characterized in that the additional ribs (6) are at a distance from one another or directly adjacent to one another.

9. A pneumatic tyre for vehicles as claimed in claim 7 or 8, characterized in that the additional ribs (7) are triangular, trapezoidal or circular in section.

10. A pneumatic vehicle tyre as claimed in one of claims 1 to 9, characterized in that one of the lateral sides (3b, 3'b, 3 "b) of the hatched ribs (2, 2', 2") is in each case a smooth surface without structure.

11. A pneumatic tyre for vehicles as claimed in one of claims 1 to 10, characterized in that the hatched ribs (2, 2 ") are triangular, in particular isosceles triangular, viewed in cross section.

12. A pneumatic tyre for vehicles as claimed in one of claims 1 to 10, characterized in that the hatched ribs (2, 2 ") are trapezoidal, in particular isosceles trapezoidal, as seen in cross section.

13. A pneumatic tyre for vehicles as claimed in claim 11 or 12, characterized in that the lateral flanks (3a, 3' a, 3 "a, 3b, 3' b, 3" b) of the hatched ribs (2, 2', 2 ") extend, viewed in section, at an angle (α, β, γ) of between 5 ° and 60 °, in particular at most 30 °, with respect to the sidewall.

14. A pneumatic tyre for vehicles as claimed in claim 13, characterized in that the lateral flanks (3a, 3' a, 3 "a, 3b, 3' b, 3" b) of the hatched ribs (2, 2', 2 ") extend at different angles (β, γ) with respect to the sidewall, the greater angle (γ) being in particular between 5 ° and 30 ° greater than the lesser angle.

15. Pneumatic vehicle tyre according to one of claims 1 to 14, characterized in that hatched ribs (2) are provided which extend at least in certain portions over local, in particular dome-shaped, preferably hemispherical, projections (5), in particular having a height (h) of 0.1mm to 0.3mm₂)。

Technical Field

The invention relates to a pneumatic vehicle tire having sidewalls and having at least one hatched area or hatched area element on at least one sidewall, wherein the hatched area or the area element has a plurality of hatched ribs which run adjacent to one another and have two lateral flanks.

Background

The hatched area formed on the sidewall of a pneumatic tire for a vehicle is primarily intended to contrast with the existing smooth surface area of the sidewall, for example, in order to improve the legibility of the inscription located on the sidewall in this way. In addition, the unevenness of the tire sidewall caused by the building process may be masked by the hatched area. It is also generally desirable to have a three-dimensional effect on the shadow area elements because three-dimensional design elements cannot be truly realized on the sidewalls due to the uniformity of the tire.

A pneumatic vehicle tire of the type mentioned at the outset is known, for example, from US 2014/021662 a 1. The hatched area comprises a hatched rib of triangular cross section, the two lateral sides of which are additionally structured with elongate conical or cylindrical projections. The number of these projections is at least five per square millimeter, and the average cross-sectional area of these projections is 0.003mm²To 0.06mm². The cylindrical projections are aligned parallel to one another and have in each case an average width of 0.03mm to 0.10mm and a height of at least 0.1 mm. Other embodiments of hatched areas on the side wall with hatched ribs running adjacent to one another are known, for example, from EP 2502758 a1 and DE 102008010486 a 1.

Disclosure of Invention

The invention is therefore based on the object of further improving the hatched area (hatched area comprises hatched ribs), in particular in order to obtain a significant contrast effect which is not possible with the hitherto known hatching and an optical effect caused by light reflection and shadow formation.

According to the invention, the stated object is achieved in that one lateral side of the hatched rib has a different surface finish than the surface finish on the other lateral side of the hatched rib.

Because the surface finish of the lateral sides of the hatched ribs is directly related to the light absorbing or light reflecting effect of the lateral sides, the hatched ribs formed according to the present invention have different light reflecting lateral sides. This produces a particularly pronounced and optically advantageous contrast effect which depends on the incidence of light and the light intensity. Furthermore, the different surface finishes of the flanks of the ribs can produce shadow effects which, in particular, make shadow lines clearly evident on the black rubber of the side walls from the surrounding surface area.

In an embodiment, in which the side with one surface finish on one hatched rib faces the side with another surface finish on an adjacent hatched rib when the hatched ribs running adjacent to one another are viewed, a particularly pronounced contrasting effect of the hatched ribs with respect to the other surface area of the side wall can be achieved by light absorption and light reflection.

By means of a preferred embodiment, a particularly effective, different surface finish of the two lateral sides of the hatched rib can be achieved. In a particularly preferred embodiment in this respect, the surface finish is a three-dimensional structure at least at one of the lateral sides of the hatched rib; alternatively, the two lateral sides of the hatched rib may also have different three-dimensional structures as surface finishes.

There are also a number of different possibilities regarding the configuration of the three-dimensional structure, which can be used depending on the desired contrast effect. In a preferred configuration, the three-dimensional structure is composed of a plurality of elevations and depressions which are preferably formed directly adjacent to one another, the elevations and depressions having a height or depth of, in particular, 0.5mm to 0.8mm on the respective side or sides of the hatched rib. The three-dimensional structure may preferably completely cover the lateral side.

Particularly good contrast effects, which can be particularly pronounced (depending on the incidence of light), can be achieved in the case of the configuration of the three-dimensional structure, which is composed of a plurality of additional ribs running parallel to one another and at right angles to the extent of the hatched ribs and at the base of which the width is in particular 0.1mm to 0.5 mm. Therefore, a hatched rib with ribs is additionally provided on at least one lateral side. These additional ribs can all be realized in the same or at least similar fashion and, viewed in cross section, are specially configured in a triangular, trapezoidal or circular manner and are arranged at a distance from one another or directly adjacent to one another.

In the case of the hatched ribs, the contrasting effect is particularly pronounced in the case of each hatched rib, one lateral side of which is a smooth surface without structures.

Preferred configurations of the hatched ribs include hatched ribs realized in a triangular shape (in particular an isosceles triangle), or in a trapezoidal shape (in particular in the form of an isosceles trapezoid) as seen in cross section.

The flanks of the hatched ribs preferably extend at an angle of from 5 ° to 60 °, in particular up to 30 °, with respect to the side walls, when viewed in cross section.

A particularly pronounced contrast can also be achieved in a further preferred embodiment in which the lateral flanks of the hatched ribs extend at different angles relative to the side walls, the larger angle being in particular 5 ° to 30 ° greater than the smaller angle.

In a further special configuration of the hatched regions, which are provided with hatched ribs, which extend at least in certain sections over local, in particular dome-shaped projections, which in particular have a height of 0.1mm to 0.3mm, different light reflection intensities are also achieved.

Drawings

Further features, advantages and details of the invention will now be described in more detail on the basis of the accompanying drawings, which schematically show exemplary embodiments of the invention. In the drawings, there is shown in the drawings,

figure 1 shows a view of the hatched rib of the hatched area of the sidewall of a pneumatic tyre for vehicles having a first variant of the invention,

figure 1a shows a cross section through the hatched rib of figure 1,

figure 2 shows a view of the hatched rib of the hatched area of the sidewall of a pneumatic tyre for vehicles having a second variant of the invention,

FIG. 3 shows a view of the hatched rib of the hatched area of the sidewall of a pneumatic tire for vehicles having a third variant of the invention, and

fig. 4 and 5 show further embodiments of hatched ribs in cross-section, respectively.

List of reference numerals

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2. 2', 2

3a, 3b

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3'a, 3' b

3 "a, 3" b

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a₁..

b₁、b₂、b₃..

h₁、h₂..

Angle of alpha, beta, gamma

Detailed Description

On the sidewalls of pneumatic tires for vehicles, it is usual to give specified information such as size, speed index, manufacturer, intended use (summer/winter tires), etc. This information is located in a smooth surface area and is formed by raised elements in the rubber material of the side walls. However, there is still considerable free space on the side wall of a pneumatic vehicle tyre for the hatching, which is formed by a plurality of elevations and depressions and which, on the one hand, provides a sharp contrast with the smooth surface areas in the side wall on which the mentioned inscriptions are provided and, on the other hand, masks possible structure-related unevennesses on the side wall. The hatching is formed during the vulcanization by depressions formed in the mold parts or mold sections of the vulcanization mold. Depending on the type of hatching, these depressions are produced in particular in a known manner by a milling process and/or by laser engraving.

Fig. 1 to 3 each show a detail of a hatched area 1 or area element, wherein hatched ribs 2 are straight and run parallel to one another, which form a basic hatching in the hatched area 1. Alternatively, the hatched rib 2 may also extend in a wave, arc or similar manner, or be a ridge that protrudes beyond the level of the side wall surrounding the hatched area, or be another ridge that extends in a depression formed in the side wall and preferably does not protrude beyond the level of the side wall.

In the exemplary embodiment shown in fig. 1 to 3, the hatched rib 2 is isosceles triangular in cross-section and has a structured lateral side 3a forming one side of the triangle and a smooth or unstructured lateral side 3b forming the other side of the triangle. Thus, one lateral side 3a of the hatched rib 2 has a surface finish that is different from the surface finish of the other lateral side 3b of the hatched rib 2. According to fig. 1a, the width b of the hatched rib 2 at its base₁0.1mm to 0.7mm, maximum height h₁Is 0.1mm to 0.8mm and at a maximum height h₁At a determined distance a from each other₁Is 0.2mm to 1.5 mm.

The lateral flanks 3a, 3b extend at the same angle α of 5 ° to 60 °, preferably up to 45 °, in particular up to 30 °, relative to the level of the hatched region 1 or relative to the side walls. The hatched ribs 2 are realized in such a way that the structured lateral side 3a of a hatched rib 2 faces the smooth lateral side 3b of a respective adjacent hatched rib 2.

In the embodiment according to fig. 1, the structured lateral side 3a is provided with (preferably covered with) an uneven structure 4 which imparts roughness, i.e. unevenness, to the lateral side 3 a. The structure 4 is constituted, for example, by a plurality of elevations and depressions formed, in particular, directly adjacent to one another, the elevations and depressions varying in height or depth in the range from 0.05mm to 0.8 mm.

The variant shown in fig. 2 differs from the variants according to fig. 1 and 1a in that some of the hatched ribs 2 are partially formed, in the exemplary embodiment shown, dome-shaped, in particular hemispherical, protrusionsExtending over the outlet 5, these projections being spaced apart from one another in the direction of extension of the hatched rib 2 and having, for example, a height h of 0.1mm to 0.3mm, in particular 0.2mm₂. As shown in fig. 2, adjacent hatched ribs 2 may extend over the same protrusion 5, with the protrusion 5 having a corresponding size. The projections 5 are spaced from each other by a few millimeters, for example 3.0mm to 10.0mm, in the direction of extension of the hatched ribs 5.

The embodiment shown in fig. 3 differs from the embodiment according to fig. 1 in that a plurality of additional ribs 6 are provided on the structured lateral side 3a of the hatched rib 2. Furthermore, the additional rib 6 extends straight in a plan view of the hatched region 1, perpendicularly to the direction of extension of the hatched rib 2, and in particular over the entire extent of the lateral flanks 3 a. Furthermore, in the exemplary embodiment shown, the additional ribs 6 are formed in the manner of an isosceles triangle, viewed in cross section, and extend at a distance from one another. However, the additional ribs 6 can also be formed directly adjacent to one another and have different cross-sectional shapes, for example circular or semicircular. The additional rib 6 has a width b of 0.1mm to 0.5mm at its base on the lateral side 3a₂。

The hatched ribs 2', 2 "which are variants of the hatched ribs 2 will be described below on the basis of fig. 4 and 5, in the exemplary embodiment shown, an additional rib 6 being provided by way of example. The height and width of the hatched ribs 2', 2 "may correspond to the height and width of the hatched ribs 2 already mentioned.

Fig. 4 shows two hatched ribs 2' extending adjacent to each other, which have a cross-section in the form of an isosceles trapezoid and, according to their trapezoidal form, have a width b₃A land area 3' of 0.05mm to 0.5 mm. The lateral flanks 3'a, 3' b forming the sides of the trapezium adjoin the platform region 3 'to the side walls (not shown) and extend at an angle α' of 5 ° to 60 °, preferably up to 45 °, in particular up to 30 °.

In the variant shown in fig. 5, the hatched rib 2 "is provided with an asymmetrical triangular section, each section being delimited, in the example, by a structured lateral side 3" a and a smooth lateral side 3 "b. The structured lateral side 3 "a extends at an angle β to the sidewall, while the smooth lateral side 3" b extends at an angle γ (back-off angle β) to the sidewall. The angle β is 5 ° to 60 °, in particular the angle γ is at least 5 ° greater than the angle β. The angle γ is preferably 10 ° to 30 ° greater than the angle β.

The invention is not limited to the described embodiments. The structured lateral sides may be structured in any manner, such as having latticed protrusions. In particular, both sides of the hatched rib may be structured, the structure on one side being different from the structure on the other side. The variants shown or described can be combined with one another, the cross-sectional shape of the hatched ribs also being independent of the structures formed on the lateral sides. Furthermore, the regions between the hatched ribs can likewise be structured.