VEHICLE TYRE HAVING A HATCHED SURFACE, VULCANISATION MOULD AND MANUFACTURING METHOD

Description

[0001] The invention relates to a vehicle tire with sidewalls and a tread, and with at least one hatched area on at least one of the sidewalls and / or the tread, wherein the hatched area has elongated hatched ribs that are arranged largely parallel to one another. The invention further relates to a vulcanization mold and a method for manufacturing the vehicle tire.

[0002] Such hatched areas are typically embossed into the tire during vulcanization using a mold that forms a negative contour of the hatched area. However, a structured surface on an already vulcanized tire can also be achieved by ablation, for example by engraving, or by an additive manufacturing process.

[0003] Such hatched areas are typically created during tire vulcanization using a mold that has a negative contour of the hatched area. However, a structured surface on an already vulcanized tire can also be achieved through ablation, for example by engraving, or through an additive manufacturing process. Such hatched areas are well-known. On the tire sidewall and / or tread, they are used, for example, to represent markings. A marking can include images, lettering, company names, company logos, inscriptions, areas, etc. The hatched area can be part of the marking and / or completely or partially surround it.

[0004] The scattering of light at the edges of the crosshatching ribs reduces the reflection of light from the tire's surface, thus altering its perceived brightness. Generally, surface areas with transverse ridges appear darker than essentially smooth, unridged areas. This creates contrast in the otherwise monochromatic surface of the tire, particularly the sidewall and / or tread. As a result, markings can be displayed more clearly.

[0005] German patent applications DE 10 20180217683 A1 and JP 20160215697 A each disclose a vehicle tire with hatched ribs and transverse ridges. US patent 2017 / 050473 A1 discloses hatching patterns for generating a machine-readable code.

[0006] For example, EP 2483088 A1 discloses a vehicle tire which has a large number of largely parallel hatched ribs on its sidewall for high-contrast surface design and highlighting of a marking. However, the design possibilities with such hatching are limited.

[0007] The task is therefore to influence the contrast effect even more precisely and to further increase it. In addition, reliable manufacturability of the tire using a vulcanization mold should be enabled.

[0008] This is achieved by a vehicle tire according to claim 1, a vulcanization mold according to claim 14 and a manufacturing process according to claim 15.

[0009] The vehicle tire according to the invention is characterized in that each hatching rib of the hatching ribs has branches, wherein exactly one short transverse ridge branches off from each branch of the branches, and that the short transverse ridges all branch off to an identical first side of the hatching ribs and terminate in a free end, and that the hatching ribs are arranged with a second center distance of 0.4 mm to 1.0 mm.

[0010] Each hatching rib, together with the transverse ridges branching off from it onto the first side, forms a comb-like hatching element in plan view. The hatching ribs and the short transverse ridges are each formed as raised sections of the hatching base. Each hatching rib has branches, with exactly one of the short transverse ridges branching off from each branch; that is, exactly one short transverse ridge joins each branch of a hatching rib. All the short transverse ridges branch off onto the same first side of the hatching ribs; that is, they all join the respective hatching rib from the same first side.

[0011] The short transverse ridges terminate in free ends. Thus, the short transverse ridges are free of further branches and / or intersections with other ridges from the hatching background. Each short transverse ridge branches off from exactly one hatching rib and ends before the next hatching rib. The free ends of the short transverse ridges further scatter the light in different directions, and there is additional shading between the free ends and the adjacent next hatching rib.

[0012] The transverse ridges of all hatching ribs branch off from the same first side of the hatching ribs and extend as raised sections from the hatching ground to their free end. Thus, in a direction perpendicular to the longitudinal direction of the hatching ribs, a sequence is created consisting of a hatching rib, an area with short transverse ridges branching off from the hatching rib, the next hatching rib, an area with short transverse ridges branching off from the next hatching rib, and so on. This allows for targeted control of the contrast effect.

[0013] It has been shown that hatching ribs with branching short transverse ridges produce a significantly stronger contrast effect than hatching ribs that are free of such branching short transverse ridges. The additional flanks of the short transverse ridges increase the scattering, multiple reflection, and absorption of light incident on the hatching surface.

[0014] Furthermore, the flanks of the hatching ribs pointing towards the first side are interrupted by short transverse ridges, which further increases the contrast. In contrast, flanks pointing away from the first side of the hatching ribs are free of interruptions, in particular free of interruptions by intersecting ridges.

[0015] The short transverse ridges also create additional shadow effects, which, especially on the black rubber of the vehicle tire, clearly highlight the hatched area compared to the surrounding, particularly smooth, surface areas.

[0016] The contrast effect can thus be influenced and improved even more precisely by the sheepskin ribs with short transverse elevations branching off according to the invention.

[0017] A further advantage is that, with a shaped surface, a mold negative of such a hatched area can be produced particularly reliably, especially using laser engraving. The mold negative of the branching short transverse ridges, in particular, can be produced with greater precision. Specifically, the width of the mold negative of the short transverse ridges branching off precisely onto the first side can be reliably controlled using laser engraving. Thus, the width of the short transverse ridges branching off precisely onto the first side of the hatched area can also be reliably controlled, thereby ensuring a reliable contrast effect on the tire.

[0018] If elevations, in particular hatching ribs or short transverse elevations, are arranged largely parallel to each other, this means, in the context of the application, that the longitudinal extension directions of adjacent elevations of the elevations enclose an angle of a maximum of 5° with each other.

[0019] An advantageous embodiment is given in that the short transverse ridges of at least one hatching rib of the hatching ribs are arranged largely parallel to each other.

[0020] This allows for a high density of short transverse ridges, further enhancing the contrast. The uniform orientation of these ridges also makes it particularly efficient to create a negative contour of the hatched area within the surface of a vulcanization mold using engraving, especially laser engraving.

[0021] A particularly uniform contrast effect is achieved when the short transverse ridges of all hatching ribs are arranged largely parallel to each other.

[0022] Another advantageous embodiment is given in that the branches of at least one hatching rib of the hatching ribs are arranged equidistantly.

[0023] This achieves a uniform contrast effect. The equidistant arrangement also enables the efficient production of a negative contour of the hatched area in this way within the surface of a vulcanization mold by means of engraving, especially laser engraving.

[0024] A particularly uniform contrast effect is achieved when all hatching ribs are formed in this way.

[0025] Another advantageous embodiment is provided in that the branches of at least one hatching rib and the branches of a hatching rib adjacent to the at least one hatching rib are arranged offset from each other.

[0026] This allows the short transverse ridges to be distributed particularly evenly across the hatched area. This also enables the efficient production of a negative contour of the hatched area in a mold surface of a vulcanization mold by means of engraving, especially laser engraving.

[0027] Another advantageous embodiment is given in that a longitudinal extension direction of at least one hatching rib of the hatching ribs includes an angle of 45° to 90°, preferably 60° to 90°, particularly preferably 90°, with the respective longitudinal extension direction of the respective branching short transverse elevation.

[0028] The angle influences the local density distribution on inclined flanks following a branch. However, at an angle of less than 45°, demolding the tire becomes more difficult. An angle of 60° to 90° allows for improved contrast while simultaneously ensuring good demoldability from a mold surface, resulting in a negative contour of the hatched area. Demoldability is further improved at an angle of 90°.

[0029] It is also advantageous if all short transverse ridges of a hatching rib form the same angle with the respective hatching rib. This limits the number of directions required to engrave a negative for that hatching rib. This advantage is further enhanced if all hatching ribs are designed in this way.

[0030] Another advantageous embodiment is given in that the short transverse ridges of at least one hatching rib of the hatching ribs have a length L of 0.2 mm to 0.5 mm, preferably of 0.25 mm to 0.40 mm, particularly preferably of 0.25 mm to 0.32 mm.

[0031] The length L of the short transverse elevations can be measured from a ridge line of the hatching rib running along a ridge or the middle of a ridge of the hatching rib to the free end of the short transverse elevation, measured at one third of a height H of the hatching rib and measured parallel to a level of the hatching ground.

[0032] The contrast effect of short transverse ridges with a length L of less than 0.2 mm is limited. A length L of 0.2 mm to 0.5 mm allows for advantageous control of the contrast effect, even with limited length. Simultaneously, a corresponding negative contour of a mold surface of a vulcanization mold can be reliably produced by laser engraving. A length of 0.25 mm to 0.40 mm, and preferably 0.25 mm to 0.32 mm, has proven particularly advantageous. This advantage is amplified when several, preferably all, hatching ribs are formed in this way. Such a length L enables good demolding of the tire from a mold surface with a negative contour of the hatching surface thus designed.

[0033] Another advantageous embodiment is given in that the branches of at least one hatching rib of the hatching ribs have a first center distance of 0.2 mm to 0.4 mm, preferably of 0.25 mm to 0.30 mm.

[0034] Such an initial center-to-center spacing of the branches of a hatching rib allows for a clear separation of the short QR (crosswise ridges) while simultaneously ensuring a dense arrangement of the transverse ridges. The initial center-to-center spacing can be measured parallel to the level of the hatching base. A negative contour of the hatching surface designed in this way can be reliably and precisely produced in the mold surface of a vulcanization mold using laser engraving, and the mold surface is easy to clean. A tire of this type can be easily removed from the vulcanization mold.

[0035] According to the invention, the hatching ribs are arranged with a second center distance of 0.4 mm to 1.0 mm, preferably of 0.5 mm to 0.7 mm, particularly preferably of 0.55 mm to 0.60 mm.

[0036] A second center-to-center spacing between adjacent hatching ribs of at least 0.4 mm, preferably at least 0.5 mm, and particularly preferably at least 0.55 mm, provides sufficient space between adjacent hatching ribs for the arrangement of transverse ridges. A second center-to-center spacing between adjacent hatching ribs of at most 1.0 mm, preferably at most 0.7 mm, and particularly preferably at most 0.60 mm, allows for a sufficiently dense arrangement of the hatching ribs to achieve the desired contrast. Such a second center-to-center spacing enables improved contrast with a moderate manufacturing effort for the negative contour of the hatched surface thus designed in a mold surface of a vulcanization mold by means of engraving, in particular laser engraving. The second center-to-center spacing of the hatching ribs can be measured between the ridge lines of the hatching ribs, with the ridge lines each running along a ridge or...The second center distance runs along the center of a ridge of the respective hatching rib, with the second center distance measured parallel to a level of the hatching base. The advantage is increased if several, preferably all, hatching ribs are formed in this way.

[0037] Another advantageous embodiment is given in that at least one hatching rib of the hatching ribs has a height H of 0.1 mm to 0.8 mm, preferably of 0.2 mm to 0.5 mm, particularly preferably of 0.25 mm to 0.35 mm.

[0038] The height H of a hatch rib can be the height averaged along the longitudinal extent of the hatch rib. Heights can be measured relative to the level of the hatch base of the hatched area.

[0039] Average values ​​generally correspond to the arithmetic mean.

[0040] This results in favorable dimensions that improve manufacturability. A negative contour of the hatched area designed in this way can be created in a mold surface of a vulcanization mold by means of engraving, especially laser engraving.

[0041] The hatched area is particularly advantageous when several, preferably all, hatching ribs have a corresponding height H. This advantage is further enhanced when several, preferably all, hatching ribs are designed in this way.

[0042] It is advantageous if, at a junction, the hatching rib and the branching short transverse ridge have the same height.

[0043] Another advantageous embodiment is given in that at least one hatching rib of the hatching ribs has opposite flanks which enclose an angle of at least 50°, preferably 55° to 65°, with each other.

[0044] Such flank angles exhibit good contrast. A negative contour of the hatched area designed in this way can be created, for example, by engraving, in particular laser engraving or subtractive engraving, on the surface of a vulcanization mold.

[0045] A particularly advantageous hatching pattern results when the opposing flanks exhibit an angle over a vertical extent that corresponds to at least one quarter of the height H of the hatching rib. This advantage is increased when several, preferably all, hatching ribs are formed in this manner.

[0046] Another advantageous embodiment is given in that at least one hatching rib of the hatching ribs and / or at least one short transverse ridge of the short transverse ridges has opposite flanks which enclose an angle of 2° to 10°, preferably 6° to 8°, with each other.

[0047] Such a steep flank angle allows for multiple reflections and thus improved contrast. A negative contour of the hatched area formed in this way can be reliably created on the surface of a vulcanization mold by laser engraving the mold tool. A particularly advantageous hatched area results when the opposing flanks enclose such an angle over a vertical extent that corresponds to at least one-quarter of the height H of the hatched rib. The advantage is further enhanced if several, preferably all, hatched ribs are formed in this manner.

[0048] Preferably, all short transverse ridges of a hatching rib of the hatching ribs each have opposite flanks that enclose an angle of 2° to 10°, preferably 6° to 8°, with each other.

[0049] In a suitable embodiment, the hatching ribs each have opposite flanks that enclose an angle of at least 50° with each other, and the short transverse ridges each have opposite flanks that enclose an angle of 2° to 10°, preferably 6° to 8°, with each other.

[0050] In another advantageous embodiment, both the hatching ribs and the short transverse ridges each have opposite flanks that enclose an angle of 2° to 10°, preferably 6° to 8°, with each other.

[0051] Another advantageous embodiment is provided in that at least one hatching rib and / or at least one short transverse ridge has opposing flanks that enclose an angle of 2° to 10°, preferably 6° to 8°, and that the respective ridge has a width of 0.08 mm to 0.13 mm, preferably 0.1 mm. The width can be measured at one-third of the height of the hatching rib or the hatching rib belonging to the short transverse ridge.

[0052] Another advantageous embodiment is given in that at least one hatching rib of the hatching ribs and / or at least one short transverse elevation has a flank which has a convexly curved and / or a linear and / or a concavely curved and / or a stepped and / or a kinked and / or a structured area.

[0053] This allows for even more targeted control and further improvement of the contrast effect. A corresponding negative contour in the surface of a vulcanization mold can be created, for example, by engraving, particularly laser engraving. The advantage of this hatched surface is amplified when several, preferably all, crossed hatching ribs and / or short transverse ridges are designed in this way.

[0054] It is particularly advantageous if the appropriately shaped area extends over a height that corresponds to at least one quarter of the height H of the hatching rib of the hatching element.

[0055] The hatching ribs and / or the short transverse ridges may transition into the hatching background in a kink or curve. The cross-section may be symmetrical.

[0056] The hatching ribs and / or short transverse ridges may have a flattened ridge. The ridge may comprise a plateau with a width of 0.03 mm to 0.06 mm. The ridge may also exhibit irregularities in height, amounting to a maximum of 5% of the height H.

[0057] Another advantageous embodiment is given in that the vehicle tire has several hatched areas which are arranged in such a way that they represent a machine-readable code, preferably a two-dimensional code, particularly preferably a QR code.

[0058] This allows for the simple placement of a high-contrast QR code on the surface of the vehicle tire. The hatched area can represent the areas of the machine-readable code that are typically dark, especially black. The areas of the machine-readable code that are typically light, especially white, can have a surface structure different from that of the hatched area, in particular a largely smooth surface.

[0059] Regardless of the embodiment, the hatching base of the hatched area can be designed to separate adjacent crossed hatching ribs and / or adjacent short transverse ridges. A largely flat hatching base is preferred.

[0060] A particularly advantageous embodiment is achieved in which the short transverse ridges of at least one hatching rib slope continuously downwards from the branches towards the hatching base. This, combined with the beneficial supporting effect of the short transverse ridges, further improves demoldability.

[0061] The ridges of the hatching ribs and / or the short transverse elevations of the hatching area can be recessed, raised or at the same level as a tire surface surrounding the hatching area.

[0062] In a preferred embodiment, the hatched area is formed on one of the sidewalls of the vehicle tire. A favorable contrast effect for highlighting markings is particularly important on the sidewall.

[0063] According to a further preferred embodiment, the hatched area is formed on the tread of the vehicle tire. The hatched area can, in particular, also be applied to the groove flanks and / or groove bases of grooves running in the tread, or at the tread run-out, i.e., on the shoulder flanks extending outside the ground contact area to the sidewalls, or on the outer surface of the tread, i.e., on the tread surface in contact with the ground.

[0064] Preferably, the tire in question is a pneumatic vehicle tire. Ideally, it is a tire for a passenger car. However, it can also be any other pneumatic vehicle tire, particularly for a bicycle, van, SUV, light truck, commercial vehicle, motorcycle, and / or bus.

[0065] The invention also includes a vulcanization mold for the shaping vulcanization of the vehicle tire according to the invention. The vulcanization mold has a mold surface that has a negative contour of a hatched area, wherein the hatched area has elongated hatched ribs that are arranged largely parallel to one another. The vulcanization mold is characterized in that each hatched rib has branches, from each branch exactly one short transverse ridge branching off, and that the short transverse ridges all branch off onto the same first side of the hatched ribs and terminate in a free end, and that the hatched ribs are arranged with a second center-to-center spacing of 0.4 mm to 1.0 mm, preferably of 0.5 mm to 0.7 mm, and particularly preferably of 0.55 mm to 0.60 mm.

[0066] Such a vulcanization mold enables the reliable production of the vehicle tire according to the invention. The hatching surface is optimized in such a way that the negative contour of the hatching surface can be reliably generated by means of laser engraving, from which the hatching surface can be reliably formed and shaped on the tire surface during the vulcanization process, and that the mold surface, having the negative contour, is easy to clean.

[0067] The invention further relates to a method for manufacturing a vehicle tire according to the invention. The method comprises at least the following steps: a) Engraving a negative contour of a hatched area into a mold surface of a vulcanization mold for the forming vulcanization of a vehicle tire by means of laser engraving, wherein the hatched area has elongated hatched ribs that are arranged largely parallel to each other, wherein each hatched rib has branches, wherein exactly one short transverse ridge branches off from each branch and wherein the short transverse ridges all branch off onto the same first side of the hatched ribs and terminate in a free end, b) Providing a tire blank and positioning the tire blank in the vulcanization mold comprising the mold surface, c) Forming vulcanization of the tire blank by means of the vulcanization mold comprising the mold surface, whereby the hatched area is imprinted into an outer surface of the vehicle tire, in particular a sidewall and / or a tread of the vehicle tire.

[0068] This enables the reliable production of the vehicle tire according to the invention. The negative contour of the hatched area is optimized such that it can be reliably produced by laser engraving, the hatched area can be reliably formed and shaped during the vulcanization process, and the molded surface with the negative contour is easy to clean. Preferably, the hatched area is arranged on the sidewall of the tire.

[0069] Further features, advantages, and details of the invention will now be described in more detail with reference to the drawing, which schematically illustrates exemplary embodiments of the invention. The drawing shows Fig. 1 a vehicle tire 1 having a hatched area; Fig. 2 and 3 Each one is a hatched area; Fig. 4 Top view of a hatched area; Fig. 5 Examples of cross-section designs.

[0070] The Figure 1Figure 1 shows a vehicle tire 1 with sidewalls 2 and a tread 3, and with at least one hatched area 4 on at least one of the sidewalls 2 and / or the tread 3. If the hatched area is located on the tread 3, it can be positioned, in particular, on the groove flanks and / or groove bases of grooves running in the tread 3, or at the tread trailing edge (i.e., on the shoulder flanks extending beyond the ground contact area to the sidewalls), or on the outer surface of the tread (i.e., on the tread surface in contact with the ground). Preferably, the hatched area 4 is located on at least one of the sidewalls 2. Preferably, the tire is a pneumatic tire, especially for a passenger car. However, it can also be another type of vehicle tire, especially for a bicycle, van, SUV, light truck, commercial vehicle, motorcycle, and / or bus.

[0071] The hatched area 4 has elongated hatching ribs 5, which are arranged largely parallel to each other. Each hatching rib 5 has branches 7, from each branch 7 of the branches exactly one short transverse projection 6 branches off. The short transverse projections 6 all branch onto the same first side 9 of the hatching ribs and terminate in a free end 8.

[0072] Such hatched areas 4 are ideally suited for representing a code 41, in particular a two-dimensional code such as a QR code 41. In this case, the areas of the code that are usually shown in dark can be formed as hatched areas 4.

[0073] The ridges of the hatching ribs 5 with the ridge lines 18 and / or the ridges of the short transverse elevations 6 with the ridge lines 24 can be recessed, raised or level with respect to a tire surface surrounding the hatching area.

[0074] Two variants of such a hatched area 4 are shown. Figures 2 and 3 shown.

[0075] The branches 7 of each hatching rib 5 are clearly visible. Exactly one short transverse ridge 6 branches off from each branch 7. The short transverse ridges 6 of all hatching ribs branch off onto the same first side 9 of the hatching ribs and each extends as a ridge from a hatching base 19 to its free end 8. Each hatching rib 5 thus forms a comb-like hatching element in plan view with the short transverse ridges 6 branching off from it onto the first side 9. In a direction perpendicular to a longitudinal direction of the hatching ribs 5, this results in a sequence of hatching rib 5, area 17 with short transverse ridges 6 branching off from the respective hatching rib 5, next hatching rib 5, next area 17 with short transverse ridges 6 branching off from the respective hatching rib 5, etc.The hatching ribs 5 and the short transverse elevations 6 are each formed as elevations from the hatching base 19 of the hatching surface 4.

[0076] The short transverse elevations 6 of all hatching ribs 5 each terminate in a free end 8. Thus, the short transverse elevations 6 are free from further branches and / or intersections with an elevation from the hatching ground 19. Each short transverse elevation 6 therefore branches off from exactly one hatching rib 5 and terminates before the next hatching rib 5.

[0077] The flanks 14 of the hatching ribs pointing towards the first side 9 are interrupted by the short transverse ridges 6, which further increases the contrast. In contrast, the flanks 14 pointing away from the first side 9 of the hatching ribs 5 are free of interruptions.

[0078] The short transverse ridges 6 of at least one hatching rib 5, in particular of all hatching ribs, are arranged largely parallel to each other. The branches 7 of at least one hatching rib 5, in particular of all hatching ribs, are arranged equidistantly. The branches 7 of one hatching rib 5 and the branches 7 of a hatching rib 5 adjacent to that hatching rib 5 are offset from each other.

[0079] A longitudinal extension direction 10 of at least one hatching rib 5 of the hatching ribs forms an angle 11 of 45° to 90°, preferably of 60° to 90°, particularly preferably of nearly 90°, with the respective longitudinal extension direction 12 of the branching short transverse ridges 6. An angle 11 of 90° is shown.

[0080] The short transverse ridges 6 of at least one hatching rib 5 have a length L of 0.2 mm to 0.5 mm, preferably 0.25 mm to 0.40 mm, and particularly preferably 0.30 mm to 0.35 mm. The length L can be measured from a ridge line 18 of the hatching rib 5 to the free end 8 of the short transverse ridge 6, measured at one-third 21 of a height H of the hatching rib 5 and parallel to a level 20 of the hatching base 19 of the hatching area 4. The ridge line 18 runs as shown in the Fig. 3 shown, along the ridge of hatched rib 5 or, in the case of a flattened ridge, along the middle of the ridge, as shown in the Fig. 2 depicted.

[0081] The branches 7 of at least one hatching rib 5 of the hatching ribs have a first center-to-center spacing 22 of 0.2 mm to 0.4 mm, preferably of 0.25 mm to 0.30 mm. The hatching ribs 5 are arranged with a second center-to-center spacing 23 of 0.4 mm to 1.0 mm, preferably of 0.5 mm to 0.7 mm, particularly preferably of 0.55 mm to 0.60 mm. The second center-to-center spacing 23 of the hatching ribs can be measured between the ridge lines 18 of the hatching ribs 5, each measured parallel to the level 20 of the hatching base 19.

[0082] At least one hatch rib 5 has a height H of 0.1 mm to 0.8 mm, preferably 0.2 mm to 0.5 mm, and particularly preferably 0.25 mm to 0.35 mm. The height H of a hatch rib 5 can be the average height along the longitudinal extent of the hatch rib. Heights can be measured relative to the level 20 of the hatch base 19 of the hatch area 4, as shown. Average values ​​generally correspond to the arithmetic mean.

[0083] The short transverse ridges 6 branching off from at least one hatching rib 5 of the hatching ribs each have opposing flanks 14 that enclose an angle 15 of 2° to 10°, preferably 6° to 8°. The opposing flanks 14 enclose such an angle 15 over a vertical extent that corresponds to at least one quarter of the height H of the respective hatching rib 5.

[0084] The in the Figures 2 and3 The illustrated embodiments differ in particular in the angle 15, 15' that the opposing flanks 14 of the hatching ribs 5 enclose with each other.

[0085] The one in Figure 2 The illustrated embodiment is characterized in that at least one hatching rib 5 of the hatching ribs has opposing flanks 14 which enclose an angle 15' of at least 50°, preferably 55° to 65°. Furthermore, the embodiment has flattened ridges, wherein the ridge lines 18, 24 run along the center of the ridges.

[0086] The one in Figure 3 The illustrated embodiment is characterized in that at least one hatching rib 5 of the hatching ribs has opposite flanks 14 which enclose an angle 15 of 2° to 10°, preferably of 6° to 8°, with each other.

[0087] The Figure 4Figure 1 shows a schematic top view of a hatched area 4 according to the invention. This can be the area shown in the Figure 2 The hatched area shown is 4.

[0088] It can be clearly seen that all short transverse elevations 6 branch off from the respective hatching rib 5 onto the same first side 9 and end in a free end 8.

[0089] The Figures 5a to 5g Figure 1 shows examples of cross-sections of one of the hatching ribs 5 and / or one of the short transverse ridges 6. The cross-section runs outside a branch 7 perpendicular to the longitudinal direction 12 of the respective short transverse ridge 6 or perpendicular to the longitudinal direction 10 of the respective hatching rib 5. The cross-sections are suitable for the [applications / applications] described in the Figures 2 and 3 The hatched areas shown are 4. Without loss of generality, the cross-sections shown are symmetrical.

[0090] The Fig. 5aFigure 1 shows a cross-section that has a linearly extending region 16 in the area of ​​the flanks 14. The flanks 14 are opposite each other and can form an angle 15' of at least 50°, preferably 55° to 65°. The flanks 14 transition into the hatched background 19 at a bend.

[0091] The Fig. 5b Figure 1 shows a corresponding cross-section, wherein the flanks 14 enclose an angle 15 of 2° to 10°, preferably of 6° to 8°, with each other. Fig. 5c This shows by way of example that the flanks 14, regardless of the exact design of the cross-section, can also transition into the hatching background 19 with a curvature.

[0092] The Fig. 5d shows a cross-section which has a convexly curved region 16 in the area of ​​the flanks 14. Fig. 5e shows a cross-section which has a stepped area 16 in the area of ​​the flanks 14.

[0093] The Fig. 5fshows a cross-section which has a structured area 16 in the region of the flanks 14. Fig. 5g shows a cross-section which has a concave curved area 16 in the area of ​​the flanks 14.

[0094] In all Figures 5a to 5g The appropriately shaped area 16 can extend over at least a quarter of the height H of the hatching rib of the corresponding hatching element.

[0095] The in the Figures 1 to 5 The hatched areas 4 of a surface 3,2 of a vehicle tire 1 shown can be produced by shaping the vehicle tire through vulcanization. For this purpose, a vulcanization mold has a mold surface that forms a negative contour of the hatched area 4 to be created, in particular a negative contour of the respective area in one of the Figures 1 to 5 shown hatched area 4.

[0096] The manufacture of a vehicle tire 1 having a surface 2,3 with a hatched area 4 as in the Figures 1 to 5 The depicted steps include at least the following: a) Engraving a negative contour of the hatching surface 4 into a mold surface of a vulcanization mold for the shaping vulcanization mold of a vehicle tire 1 by means of laser engraving, wherein the hatching surface 4 has elongated hatching ribs 5 which are arranged largely parallel to each other, wherein each hatching rib 5 has branches 7, wherein exactly one short transverse ridge 6 branches off from each branch 7 and wherein the short transverse ridges 6 all branch off onto an identical first side 9 of the hatching ribs 5 and terminate in a free end 8, b) providing a tire blank and positioning the tire blank in the vulcanization mold comprising the mold surface, c) shaping vulcanization of the tire blank by means of the vulcanization mold comprising the mold surface, whereby the hatching surface 4 is imprinted into an outer surface of the vehicle tire 1, in particular a sidewall 2 and / or a tread 3 of the vehicle tire 1.

[0097] The negative contour engraved into the mold surface in step a) is in particular a negative contour of one of the [unclear] in the Figures 1 to 5 4. hatched areas shown. Reference symbol list

[0098] 1 Vehicle tire 2 Sidewall 3 Tread 4 Hatch area 5 Hatch rib 6 Short transverse ridge 7 Branch 8 Free end 9 Side 10 Longitudinal direction of a hatch rib 11 Angle 12 Longitudinal direction of a short transverse ridge 13 Clear distance 14 Opposing flanks 15 Angle 15' Angle 16 Area 17 Area 18 Ridge line of a hatch rib 19 Hatch base 20 Level 21 Third of height H 22 First center distance of branches 23 Second center distance of hatch ribs 24 Ridge line of a short transverse ridge 41 QR code Height of a hatching rib; Length of a short transverse ridge

Claims

1. Vehicle tire (1) with sidewalls (2) and a tread (3) and with at least one hatched area (4) on at least one of the sidewalls (2) and / or the tread (3), wherein the hatched area (4) has elongated hatching ribs (5) which are arranged largely parallel to one another, wherein each hatching rib (5) of the hatching ribs has branches (7), wherein in each case precisely one short transverse elevation (6) branches off from each branch (7) of the branches, and wherein the short transverse elevations (6) all branch off on a same first side (9) of the hatching ribs (5) and end in a free end (8), characterized in that the hatching ribs (5) are arranged with a second center spacing (23) of 0.4 mm to 1.0 mm.

2. Vehicle tire (1) according to Claim 1, characterized in that the short transverse elevations (6) of at least one hatching rib (5) of the hatching ribs are arranged largely parallel to one another.

3. Vehicle tire (1) according to at least one of the preceding claims, characterized in that the branches (7) of at least one hatching rib (5) of the hatching ribs are arranged equidistantly.

4. Vehicle tire (1) according to at least one of the preceding claims, characterized in that the branches (7) of at least one hatching rib (5) of the hatching ribs and the branches (7) of a hatching rib (5) adjacent to the at least one hatching rib (5) are arranged offset to one another.

5. Vehicle tire (1) according to at least one of the preceding claims, characterized in that a longitudinal extent direction (10) of at least one hatching rib (5) of the hatching ribs encloses an angle (11) of 45° to 90°, preferably of 60° to 90°, particularly preferably of largely 90°, with the respective longitudinal extent direction (12) of the respective branching-off short transverse elevation (6).

6. Vehicle tire (1) according to at least one of the preceding claims, characterized in that the short transverse elevations (6) of at least one hatching rib (5) of the hatching ribs have a length L of 0.2 mm to 0.5 mm, preferably of 0.25 mm to 0.40 mm, particularly preferably of 0.25 mm to 0.32 mm.

7. Vehicle tire (1) according to at least one of the preceding claims, characterized in that the branches (7) of at least one hatching rib (5) of the hatching ribs have a first center spacing (22) of 0.2 mm to 0.4 mm, preferably of 0.25 mm to 0.30 mm.

8. Vehicle tire (1) according to at least one of the preceding claims, characterized in that the hatching ribs (5) are arranged with a second center spacing (23) of 0.5 mm to 0.7 mm, preferably of 0.55 mm to 0.60 mm.

9. Vehicle tire (1) according to at least one of the preceding claims, characterized in that at least one hatching rib (5) of the hatching ribs has a height H of 0.1 mm to 0.8 mm, preferably of 0.2 mm to 0.5 mm, particularly preferably of 0.25 mm to 0.35 mm.

10. Vehicle tire (1) according to at least one of the preceding claims, characterized in that at least one hatching rib (5) of the hatching ribs has mutually opposite flanks (14) which enclose an angle (15') of at least 50°, preferably of 55° to 65°, with one another.

11. Vehicle tire (1) according to at least one of the preceding claims, characterized in that at least one hatching rib (5) of the hatching ribs and / or at least one short transverse elevation (6) of the short transverse elevations has mutually opposite flanks (14) which enclose an angle (15) of 2° to 10°, preferably of 6° to 8°, with one another.

12. Vehicle tire (1) according to at least one of the preceding claims, characterized in that at least one hatching rib (5) of the hatching ribs and / or at least one short transverse elevation (6) of the short transverse elevations has a flank (14) which has a convexly curved and / or a linear and / or a concavely curved and / or a stepped and / or a bent and / or a structured region (16).

13. Vehicle tire (1) according to at least one of the preceding claims, characterized in that the vehicle tire (1) has several hatched areas (4) which are arranged in such a way that they represent a machine-readable code (41), preferably a two-dimensional code (41), particularly preferably a QR code (41).

14. Vulcanization mold for the shape-imparting vulcanization of a vehicle tire (1) according to one of the preceding claims, wherein the vulcanization mold has a mold area which has a negative contour of a hatched area (4), wherein the hatched area (4) has elongated hatching ribs (5) which are arranged largely parallel to one another, wherein each hatching rib (5) of the hatching ribs has branches (7), wherein in each case precisely one short transverse elevation (6) branches off from each branch (7), and wherein the short transverse elevations (6) all branch off on a same first side (9) of the hatching ribs and end in a free end (8), characterized in that the hatching ribs (5) are arranged with a second center spacing (23) of 0.4 mm to 1.0 mm, preferably of 0.5 mm to 0.7 mm, particularly preferably of 0.55 mm to 0.60 mm.

15. Method for producing a vehicle tire (1) according to one of Claims 1 to 12, wherein the method comprises at least the following steps: a) engraving a negative contour of a hatched area (4) into a mold area of a vulcanization mold for the shape-imparting vulcanization mold of a vehicle tire (1) by means of laser engraving, wherein the hatched area (4) has elongated hatching ribs (5) which are arranged largely parallel to one another, wherein each hatching rib (5) of the hatching ribs has branches (7), wherein in each case precisely one short transverse elevation (6) branches off from each branch (7), and wherein the short transverse elevations (6) all branch off on a same first side (9) of the hatching ribs and end in a free end (8), b) providing a tire blank and positioning the tire blank in the vulcanization mold having the mold area, c) shape-imparting vulcanization of the tire blank by means of the vulcanization mold having the mold area, as a result of which the hatched area (4) is imprinted into an outer area of the vehicle tire, in particular a sidewall (2) and / or a tread (3) of the vehicle tire.