Two-wheeled vehicle pneumatic tire

Abstract

The invention relates to a tire (1), preferably a bicycle tire, particularly preferably a racing tire (1), having a tread (2), a tire carcass, tire sidewalls (3) and two bead regions (4), each having a bead with a core (5), wherein the tire carcass comprises two carcass plies (6, 6'), wherein the two carcass plies (6, 6') extend from an apex region (17) of the pneumatic tire (1) for two-wheeled vehicles over the tire sidewalls (3) up to the two bead regions (4) and there surround the respective core (5) from the inside axially to the outside axially and end in a carcass ply end (7, 7'), and wherein the two bead regions (4) each have a bead protector strip (8) arranged from the outside on the carcass for use as an anti-abrasion protection. The problem to be solved is to improve the rolling resistance. This is achieved in that the carcass ply end (7') of the inner carcass ply (6') is covered from the outside by the respective bead protector strip (8), wherein the inner carcass ply (6') is formed by the radially inner carcass ply of the two carcass plies (6, 6') in the apex region (17). The invention also relates to a two-wheeled vehicle having such a tire.

Description

Technical Field

[0001] The present invention relates to a pneumatic two-wheeled vehicle tire, preferably a bicycle tire, particularly preferably a racing tire, comprising a tread, a tire carcass, a tire sidewall, and two bead regions, each of the two bead regions having a bead with a core, wherein the tire carcass comprises two carcass plies, wherein the two carcass plies each have individual reinforcing members extending parallel to one another, wherein the reinforcing members are arranged at an angle of 40 to 60 degrees relative to the circumferential direction U, and wherein the reinforcing members of the two carcass plies have opposite pitch angles, wherein the two carcass plies extend from an apex region of the two-wheeled vehicle tire through the tire sidewalls to the two bead regions, where they surround the respective core from the axial interior to the axial exterior and terminate at carcass ply ends having reinforcing member ends, and wherein the two bead regions each have a bead protection strip arranged externally on the carcass for wear protection. The invention also relates to a two-wheeled vehicle having such a tire. Background Art

[0002] Conventional pneumatic tires for two-wheeled vehicles, preferably bicycle tires, and particularly preferably racing tires, are designed and optimized for rolling resistance, puncture resistance, and mileage. Racing tires are typically distinguished by the fact that the carcass of the two tire halves are turned up and overlapped beneath the tread. Thus, in the case of a single-ply carcass, three carcass plies are positioned radially inward of the tread, one above the other, at the apex of the tire. During operation, this results in high friction between the three carcass plies, positioned one above the other, which negatively impacts rolling resistance.

[0003] Furthermore, there is a fabric connection between the inside of the tire and the outside of the tire which is detrimental to the airtightness of the tire.

[0004] EP 3174738 A1 discloses an advantageous reduction in the ply thickness in the apex region to two layers. Here, a racing tire with a carcass is formed from two carcass plies arranged one above the other, wherein the two carcass plies surround a core, the turned-up carcass plies partially cover the sidewalls, and the carcass ply ends radially terminate between the lateral edge regions of the tread and the flap. However, such a tire has a reinforcement extending through four carcass plies in at least a portion of the sidewalls, thereby increasing friction between the carcass plies and the inserts on the carcass material in the sidewall region, which has a negative impact on weight and rolling resistance. As in the aforementioned single-ply construction, this tire construction also includes a textile connection between the tire interior and tire exterior, which is detrimental to the tire's airtightness.

[0005] The trend is to improve rolling resistance in two-wheeled vehicle pneumatic tires, preferably in bicycle tires, particularly preferably in racing tires. Here, low rolling resistance is crucial for racing tires. Summary of the Invention

[0006] The invention is based on the object of providing a two-wheeled vehicle pneumatic tire, preferably a bicycle tire, particularly preferably a racing tire, in which the rolling resistance is improved.

[0007] This object is achieved in a two-wheeled vehicle tire in that the carcass insert ends of the inner carcass inserts are covered externally by respective bead protection bands, wherein the inner carcass inserts consist of the two radially inner carcass inserts in the apex region.

[0008] The advantage of the pneumatic two-wheeled vehicle tire according to the invention, preferably a bicycle tire, particularly preferably a racing tire, is, inter alia, that the rolling resistance is significantly improved due to the new tire construction.

[0009] Essential to the present invention is that the carcass inlay ends are arranged so that they are covered externally by the corresponding bead protection band. Thus, the carcass inlay ends, and therefore the reinforcement member ends, of the inner carcass inlay are arranged between the bead protection band and the outer carcass inlay, wherein the rubber coating of the inner carcass inlay may be arranged between the reinforcement member ends of the carcass inlay ends and the bead protection band. A straight line oriented perpendicular to the bead protection band may connect the bead protection band and the carcass inlay ends.

[0010] Here, the inner carcass inlay is formed by the radially inner carcass inlay of the two carcass inlays in the apex region. Here, the outer carcass inlay is formed by the radially outer carcass inlay of the two carcass inlays in the apex region.

[0011] Thus, a two-wheeled vehicle pneumatic tire achieves the following advantages: a carcass having at least two complete carcass inlays, while simultaneously achieving a reduced layer thickness due to the carcass turn-up of the two carcass inlays in the radially outer region of the sidewall connected to the bead band. Consequently, the carcass layer thickness is reduced in the sidewall, particularly in the region particularly exposed to stresses due to cyclic deformation during tire operation. Consequently, the number of overlapping layers of the two carcass inlays, between which friction losses reduce rolling resistance, is reduced. Furthermore, material usage of the inner carcass inlay is advantageously reduced, thereby reducing the weight of the carcass.

[0012] It has been shown that two-wheeled vehicle tires, preferably bicycle tires, particularly preferably racing tires, have a particularly low rolling resistance with the new design.

[0013] Bead protection band is usually used to protect the rim flange from wear when the tire is running, thereby preventing the carcass line from being exposed. The bead protection band can participate in forming or can form the outer surface of the bead area, which is designed to contact the rim.

[0014] The new construction continues to protect the core particularly well from damage due to the two carcass inlays surrounding it.

[0015] Advantageous developments of the invention are explained below. A two-wheeled vehicle having such a tire also has corresponding advantages.

[0016] In an advantageous development of the invention, it is provided that the bead protection band ends at the radially outer end with a first height of a maximum of 15 mm, preferably 10 to 12 mm, measured relative to the outermost turning point of the reinforcing member of the inner carcass inlay surrounding the core.

[0017] Because the carcass inlay ends of the bead protection band and inner carcass inlay are positioned lower, the carcass turnup of the inner carcass inlay is preferably positioned in an area that experiences little or no cyclical deformation during tire operation. This further reduces energy loss due to wear of the carcass turnup of the inner carcass inlay. This also advantageously reduces material usage for the bead protection band and inner carcass inlay, thereby reducing tire weight.

[0018] To obtain the first height, the cross-section of the two-wheeled vehicle pneumatic tire can be bent so that the two carcass inlays are arranged substantially linearly from the apex in the region of the sidewall and merge into a surrounding portion of the core that is substantially symmetrical relative to the core. In this arrangement, the first height of the radially outer end portion of the bead protection band is measured relative to the outermost turning point of the outer edge of the reinforcing member of the inner carcass inlay surrounding the core, for example, measured parallel to the substantially linearly arranged carcass inlays.

[0019] If the bead protection band comprises fibers, in particular fabric, the fabric edge of the fibers, in particular fabric, predetermines the radially outer end of the bead protection band.

[0020] In another advantageous development of the invention, the carcass inlay ends of the inner carcass inlay are arranged at a second height of a maximum of 13 mm, preferably 8 to 10 mm, measured relative to the outermost turning points of the reinforcing members of the inner carcass inlay surrounding the core.

[0021] Therefore, the carcass inlay end of the inner carcass inlay is preferably arranged in an area that is not subject to, or is hardly subject to, cyclic deformation during tire operation. This further reduces energy losses due to carcass turnup wear of the inner carcass inlay. Furthermore, this advantageously reduces material usage of the inner carcass inlay and, consequently, reduces carcass weight.

[0022] To obtain the second height, the cross-section of the two-wheeled vehicle pneumatic tire can be bent so that the two carcass inlays are arranged substantially linearly from the apex in the region of the sidewalls and merge into a surrounding portion of the core that is substantially symmetrical relative to the core. In this arrangement, the second height of the carcass inlay ends is measured relative to the outermost turning point of the outer edge of the reinforcing member of the inner carcass inlay surrounding the core, for example, measured parallel to the substantially linearly arranged carcass inlays.

[0023] Corresponding advantages arise when the carcass inlay end of the inner carcass inlay ends in the bead region, in particular coming from the core in front of the sidewall.

[0024] In a further advantageous development of the invention, it is provided that the bead protection band is embodied as a rubberized belt having fibers, in particular as a rubberized textile belt.

[0025] Another advantage of this new construction is that, because the carcass insert ends of the inner carcass insert are covered by the bead protection strip, there is no direct connection between the tire interior and the tire exterior via the carcass insert. Similarly, at the carcass insert ends, the reinforcing members of the carcass insert terminating there are covered from the outside by the bead protection strip. This prevents or significantly reduces the risk of air blowing out of the tire interior through the two carcass inserts, particularly during tubeless operation. This significantly improves the tire's airtightness during tubeless operation in a simple manner.

[0026] The fibers of the rubberized tape can be woven into a fabric. The fabric can be a nettle fabric or a nylon fabric.

[0027] In a further advantageous development of the invention, it is provided that the bead protection band is a thread without fibers twisted together, which threads connect the radially outer end of the bead protection band to the inner end of the bead protection band.

[0028] In the case of a cord comprising twisted fibers, where the cord interconnects the radially outer and inner ends of the bead protection band, air can be blown out of the tire interior through the microchannels. This negatively impacts airtightness when the tire is tubeless-operated. Therefore, the absence of such a cord arrangement and formation advantageously contributes to airtightness between the tire and the rim when the tire is assembled during tubeless operation.

[0029] Two-wheeled vehicles having such tubeless-running tires have corresponding advantages in particular.

[0030] In a further advantageous development of the invention, it is provided that the bead protection band is embodied as a rubberized monofilament fabric.

[0031] Rubberized monofilament fabrics are particularly effective in reducing air leakage between the tire and the rim, particularly when compared to conventional bead protection bands with fabrics made from multiple twisted fibers. This is because the monofilaments are essentially individually embedded in the rubber coating, thus largely preventing air from blowing from the tire interior to the exterior through the microchannels between the fibers of the bead protection band.

[0032] This allows for particularly good airtightness of the tire mounted on the rim. Two-wheeled vehicles with such a tubeless tire in particular have corresponding advantages.

[0033] It is thus possible to run the tire without an inner tube, without requiring other complex measures (such as internal padding) that would normally worsen rolling resistance.

[0034] In another advantageous development of the invention, it is provided that the carcass is in direct contact with the interior of the tire.

[0035] A two-wheeled vehicle tire, preferably a bicycle tire, particularly preferably a racing tire, in particular does not contain an inner liner that is embodied to be substantially airtight and is arranged between the carcass and the interior of the tire. This allows for a particularly lightweight tire and, therefore, advantageous rolling resistance. For bicycle tires that are operated tubeless, in particular as "tubeless-ready" tires, sufficient airtightness can be ensured by the measures described, in particular by the embodiment of the bead protection strip as a rubberized monofilament fabric.

[0036] Two-wheeled vehicles having such tubeless-running tires have corresponding advantages in particular.

[0037] In another advantageous development of the invention, it is provided that the tire is, in particular, a “tubeless” tire or a “tubeless-ready” tire.

[0038] Tubeless tires for pneumatic two-wheeled vehicles, preferably bicycle tires, and preferably racing tires, place higher demands on the airtightness of the tire itself and the seal between the tire and the rim. During tubeless operation, there are no friction losses between the inner tube and the tire, so the tire achieves favorable rolling resistance. This also eliminates the causes of punctures caused by the inner tube.

[0039] When the tire is operated for tubeless running, a sealing liquid, in particular an emulsion sealant, can be used to improve the sealing, which is filled into the interior of the tire between the tire and the rim.

[0040] Two-wheeled vehicle pneumatic tires for tubeless operation, in particular racing tires, can be so-called "tubeless" tires, which are preferably or specifically adapted for tubeless operation. Tubeless tires can generally be used without emulsion sealants.

[0041] Tubeless tires can also be so-called "tubeless-ready" tires, which are suitable for both tube-type and tubeless operation. Tubeless-ready tires are usually used with a sealing liquid, in particular an emulsion sealant, for tubeless operation. The tire and rim can be designed so that they seal directly against each other.

[0042] In another advantageous development of the invention, it is provided that the tire is a bicycle tire for running with an inner tube, in particular a clincher tire.

[0043] When tire is run with inner tube, air pressure is maintained by the inner tube of the tire inside, which is basically embodied as airtight, arranged between tire and rim. Here, new tire construction can also realize the rolling resistance that advantageously reduces.

[0044] So-called treaded tires are typically wire or folded tires. The tire has a wire or folded core and is attached to the wheel rim flange with the tire beads. Treaded tires can be assembled and disassembled easily. Therefore, in the event of a puncture, the damage can be easily repaired.

[0045] In a further advantageous development of the invention, it is provided that, at least in the region of the sidewalls, the two carcass inlays are single layers with separate reinforcing members.

[0046] By omitting further individual layers with reinforcement elements, a particularly thin, and therefore lightweight, sidewall with optimized rolling resistance can be achieved. A carcass of at least two layers in the area of ​​the sidewalls can already achieve sufficient strength and, through the two-layer construction, provides sufficient cutting resistance, particularly for bicycle tires.

[0047] In another advantageous development of the invention, it is provided that the carcass inlay ends of the outer carcass inlay of the two carcass inlays can be covered externally by an inner carcass inlay or a bead protection strip.

[0048] Here, the outer carcass inlay is the radially outer carcass inlay of the two carcass inlays in the region of the apex.

[0049] As a result, the carcass layer thickness radially outside the bead protection band can be further reduced to just two layers. This further reduces rolling resistance due to lower friction losses and reduced material consumption. Furthermore, in the tire's apex region, a carcass ply thickness of just two layers can be achieved, where the tire carcass exhibits high elasticity beneath the tread and friction losses between the carcass plies are low.

[0050] In another advantageous development of the invention, it is provided that a damping rubber insert made of highly elastic rubber is arranged between the tread and the tire carcass, wherein the damping rubber insert has a material thickness of, in particular, between 0.2 mm and 1 mm.

[0051] Thus, higher driving comfort and better rolling resistance can be achieved by separating the fabric layer.The special material thickness of the vibration-damping rubber insert significantly improves the driving comfort of the bicycle tire because the bicycle tire can generally be better adapted to the road surface.

[0052] The damping rubber insert is preferably made of a highly elastic rubber having a Resilience value of between 70 and 80. At this Resilience value, optimal riding comfort is achieved, while at the same time the rolling resistance of the bicycle tire is not increased.

[0053] In another advantageous development of the invention, provision is made for a protective layer to be arranged between the tread and the tire carcass, said protective layer comprising a particularly tensile-resistant fabric, preferably a fabric comprising fibers made of polyethylene terephthalate polyacrylate.

[0054] The protective layer ensures optimal puncture protection for two-wheeled vehicle pneumatic tires, preferably bicycle tires, particularly preferably racing tires. The fabric with fibers made of polyethylene terephthalate-polyacrylate can be a fabric with or made of Vectran fibers.

[0055] In another advantageous development of the invention, it is provided that the reinforcing members are arranged at an angle of 42 to 48 degrees, preferably 43 to 48 degrees, relative to the circumferential direction U. This results in a particularly advantageous bias carcass.

[0056] In another advantageous refinement of the present invention, it is proposed that the two carcass inlays are separate carcass inlays of the carcass. Thus, a carcass layer of exactly two layers can be realized using less material.

[0057] In another advantageous development of the invention, it is provided that the two-wheeled vehicle pneumatic tire is a bicycle tire, in particular a racing tire, a mountain bike tire or a tire of a bicycle having an electric motor driving the bicycle.

[0058] The new tire construction is particularly advantageous in bicycle tires.

[0059] The new tire construction can be used particularly advantageously in racing tires, since rolling resistance is significantly reduced. Racing tires typically have a maximum tire width of 35 mm and exhibit a low tread profile specific to racing.

[0060] New tire constructions, particularly tubeless tires, are also highly suitable for mountain bike tires. Mountain bike tires typically have a minimum tire width of 35 mm, especially 40 mm, and often feature a pronounced tread profile. Aspects such as rolling resistance are also becoming increasingly important for mountain bike tires. In particular, running a tire tubeless can be advantageous because it reduces puncture susceptibility and allows the tire to be used at relatively low air pressures.

[0061] The new tire construction is also well-suited for use on bicycles that have an electric motor to drive the bicycle. When used in this manner, low rolling resistance is advantageous because it increases the bicycle's range.

[0062] The tire may be a tire for an electric bicycle. A tire for an electric bicycle may meet the "ECE-R75" test standard. The suitability for electric bicycles is often indicated by the designation "E-bike ready 50."

[0063] The tyre may also be a tyre for an electric pedelec, in which the drive is at least partially supported by an electric motor. The suitability for an electric pedelec is often indicated by the designation "E-bike ready 25".

[0064] The new tire construction is suitable for all segments of cycling.

[0065] In another advantageous development of the invention, it is provided that the tire is a motorcycle tire, in particular an electric motorcycle tire.

[0066] A motorcycle tire or electric motorcycle tire having a new configuration may help improve the vehicle's mileage through favorable rolling resistance.

[0067] With regard to a two-wheeled vehicle, this object is achieved in that the two-wheeled vehicle has a tire according to the invention.

[0068] In an advantageous development of the invention, it is provided that the two-wheeled vehicle is a bicycle, in particular a racing or mountain bike, or a bicycle, in particular a racing or mountain bike, having an electric motor driving the bicycle.

[0069] Such a two-wheeled vehicle can be operated with particularly favorable rolling resistance.

[0070] In an advantageous development of the present invention, it is provided that the interior of the tire, which is enclosed by the rim and the tire, does not contain an inner tube.

[0071] The two-wheeled vehicle thus has tubeless tires and is operated in tubeless operation. During tubeless operation of the tire, there are no friction losses between the inner tube and the tire, so that the tire can achieve favorable rolling resistance. Tube-based puncture causes are also eliminated.

[0072] For tubeless operation, both the tire itself and the contact area between the tire and the rim must be designed to be sufficiently airtight. This can be achieved by the tire according to the invention.

[0073] When the tire is operated for tubeless running, a sealing liquid, in particular an emulsion sealant, can be used to improve the sealing, which is filled into the interior of the tire between the tire and the rim. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Further features, advantages and details of the present invention are described in detail below with the aid of schematic drawings showing exemplary embodiments. In the drawings:

[0075] Figure 1 : A two-wheeled vehicle tire is shown in cross section;

[0076] Figure 2 : A section of a two-wheeled vehicle tire is shown in cross section. DETAILED DESCRIPTION

[0077] Figure 1 The tire components of a two-wheeled vehicle tire 1 are shown in a cross-sectional view. The two-wheeled vehicle tire is a pneumatic two-wheeled vehicle tire 1, preferably a bicycle tire, particularly preferably a racing tire 1, having a tread 2, a tire carcass, a tire sidewall 3, and two bead areas 4, each having a bead with a core 5.

[0078] The tire carcass comprises two carcass inserts 6, 6', wherein the two carcass inserts 6, 6'

[0079] Each has individual reinforcing members extending parallel to one another, wherein the reinforcing members are arranged at an angle of 40 to 60 degrees with respect to the circumferential direction U, and wherein the reinforcing members of the two carcass inlays 6 have opposite pitch angles, and wherein the two carcass inlays 6, 6' extend from the apex region 17 of the two-wheeled vehicle pneumatic tire 1 over the tire sidewall 3 to the two bead regions 4, where they surround the respective core 5 from the axial inside to the axial outside, and terminate with carcass inlay ends 7, 7' of the carcass inlays 6, 6' having reinforcing member ends.

[0080] Furthermore, the two bead areas 4 each have a bead protection band 8 arranged externally on the carcass to serve as wear protection.

[0081] The two-wheeled vehicle tire is distinguished in that at least the carcass insert ends 7' of the inner carcass insert 6', which is formed by the radially inner carcass insert of the two carcass inserts 6, 6' in the apex region 17, are covered externally by respective bead protection strips 8. The outer carcass insert 6 is here formed by the radially outer carcass insert of the two carcass inserts 6, 6' in the apex region.

[0082] Thus, the carcass inlay end 7′ and therefore the reinforcement member end of the inner carcass inlay 6′ is arranged between the bead protection band 8 and the outer carcass inlay 6, wherein the rubber coating of the inner carcass inlay 6′ may be arranged between the reinforcement member end of the carcass inlay end 7′ and the bead protection band 8. A straight line 18 oriented perpendicular to the bead protection band 8 may connect the bead protection band 8 and the carcass inlay end 7′.

[0083] In the case of rubberized layers having reinforcing members, in particular the carcass plies 6 , 6 ′ and / or the bead protection band 8 , the lines shown schematically represent the extension of the reinforcing members.

[0084] The bead protection band 8 may terminate at the radially outer end 12 with a first height 13 of a maximum of 15 mm, preferably 10 to 12 mm, measured relative to the outermost turning point 14 of the outer edge of the reinforcing member of the inner carcass inlay 6' surrounding the core 5. Alternatively or additionally, the carcass inlay end 7' of the inner carcass inlay 6' may be arranged with a second height 15 of a maximum of 13 mm, preferably 8 to 10 mm, measured relative to the outermost turning point 14 of the reinforcing member of the inner carcass inlay 6' surrounding the core 5.

[0085] The dimensions of the first height 13 and the second height 15 are as follows Figure 2 shown.

[0086] The bead protection band 8 is embodied as a rubberized belt with fibers, in particular as a rubberized textile belt. The textile edges of the fibers, in particular textile, predetermine the radially outer ends 12 of the bead protection band 8 .

[0087] The carcass inlay end 7 ′ of the inner carcass inlay 6 ′ may end in the bead region 4 , in particular coming from the core 5 in front of the sidewall 3 .

[0088] In particular for tubeless operation, the bead protection band 8 is a thread without intertwined fibers, which connects the radially outer end 12 of the bead protection band 8 to the inner end 16 of the bead protection band 8. For this purpose, the bead protection band 8 can be embodied as a rubberized monofilament fabric.

[0089] The carcass may be in direct contact with the tire interior 10 .

[0090] The two carcass inserts 6 , 6 ′ may be a single layer with separate reinforcing members, at least in the region of the sidewalls 3 , in particular in such a way as to be connected to the bead band 8 from the radial outside.

[0091] The carcass ply end 7 of the outer carcass ply 6 of the two carcass plies 6, 6' can be covered from the outside by the inner carcass ply 6' or the bead chafer 8. Here, the outer carcass ply 6 is the radially outer carcass ply of the two carcass plies 6, 6' in the apex region.

[0092] Between the tread 2 and the tire carcass, a damping rubber ply 9 made of highly elastic rubber can be arranged, wherein the damping rubber ply 9 has a material thickness of between 0.2 mm and 1 mm, in particular. Preferably, the damping rubber ply is made of highly elastic rubber with a rebound material value of between 70 and 80.

[0093] Between the tread 2 and the tire carcass, a protective layer (not shown) can be arranged, which has a fabric, in particular a tensile fabric, preferably a fabric made of polyethylene terephthalate-polyacrylate fibers.

[0094] The reinforcing members of the carcass ply are preferably arranged at an angle of 42 to 48 degrees, particularly preferably 43 to 48 degrees, with respect to the circumferential direction U.

[0095] The tire can be a "tubeless" tire or a "quasi-vacuum" tire, in particular. The tire can be suitable for, set up for and used for tubeless operation. The tire for tubeless operation or the tubeless tire can be a component of a bicycle, in particular, wherein the tire interior 10 enclosed by the rim and the tire 1 is free of an inner tube.

[0096] The tire can be a bicycle tire 1, in particular a racing bike tire 1, a mountain bike tire or a tire of a bicycle with an electric motor driving the bicycle. The tire can be suitable for, set up for and used for the corresponding bicycle. In particular, the bicycle, in particular the racing bike, the mountain bike or the bicycle with an electric motor driving the bicycle can have such a tire 1.

[0097] The tire 1 shown is preferably a racing bike tire.

[0098] Likewise, the tire for tube operation, in particular the tubeless tire, can have a corresponding advantageous configuration. The motorcycle tire, in particular the electric motorcycle tire, can also have the advantageous configuration shown.

[0099] Figure 2 The indicated dimensions of the first height 13 and the second height 15 are shown.

[0100] In order to obtain the first height 13 and the second height 15, the cross section of the two-wheeled vehicle pneumatic tire 1 can be curved such that the two carcass plies 6, 6' are arranged substantially linearly in the region of the sidewall 3 starting from the apex region 17 and merge into a loop of the core 5, which is substantially symmetrical with respect to the core 5. This can be Figure 1A portion of the tire, wherein the cross section of the two-wheeled vehicle pneumatic tire 1 is correspondingly curved.

[0101] In this arrangement, the first height 13 of the radially outer end 12 of the bead protection band 8 is measured relative to the outermost turning point 14 of the outer edge of the reinforcing member of the inner carcass inlay 6' around the core 5 and is measured parallel to the substantially rectilinear arrangement of the carcass inlays 6, 6'.

[0102] In this arrangement, the second height 15 of the carcass inlay end 7' is measured relative to the outermost turning point 14 of the outer edge of the reinforcing member of the inner carcass inlay 6' around the core and is measured parallel to the substantially rectilinear carcass inlays 6, 6'.

[0103] Description of Reference Numerals

[0104] 1 Pneumatic tires for two-wheeled vehicles

[0105] 2 tread

[0106] 3 Sidewalls

[0107] 4 Bead area

[0108] 5 core

[0109] 6 Carcass inlay

[0110] 6' Inner Carcass Inlay

[0111] 7 Carcass inlay end of the outer carcass inlay

[0112] 7' carcass insert end of inner carcass insert

[0113] 8 Bead protection strip

[0114] 9 Rubber inserts

[0115] 10 Tire interior

[0116] 11 Tire exterior

[0117] 12 Radially outer end of the bead protection band

[0118] 13 First Height

[0119] 14 Outermost turning point

[0120] 15 Second Height

[0121] 16 inner end

[0122] 17 Vertex Area

[0123] 18 straight line

[0124] rR radial direction

[0125] aR axial direction

[0126] U Circumferential direction

Claims

1. A two-wheeled vehicle pneumatic tire (1) comprising a tread (2), a tire carcass, a tire sidewall (3) and two bead areas (4), each of the two bead areas comprising a bead with a core (5), The tire carcass comprises two carcass inlays (6, 6'), wherein the two carcass inlays (6, 6') each have individual reinforcing members extending parallel to one another, wherein the reinforcing members are arranged at an angle of 40 to 60 degrees relative to the circumferential direction U, and wherein the reinforcing members of the two carcass inlays (6, 6') have opposite pitch angles, wherein the two carcass inlays (6, 6') extend from the apex region (17) of the two-wheeled vehicle pneumatic tire (1) through the tire sidewalls (3) to the two bead regions (4) and there surround the respective core (5) from the axial interior to the axial exterior and terminate with carcass inlay ends (7, 7') of the carcass inlays (6, 6') having reinforcing member ends, and The two bead areas (4) each have a bead protection strip (8) arranged externally on the carcass for wear protection, It is characterized in that The carcass inlay ends (7') of the inner carcass inlay (6') formed by the radially inner carcass inlays of the two carcass inlays (6, 6') in the apex region (17) are covered externally by respective bead protection strips (8).

2. The two-wheeled vehicle pneumatic tire (1) according to claim 1, characterized in that The bead protection band (8) ends at a radially outer end (12) with a first height (13) of maximum 15 mm, measured relative to the outermost turning point (14) of the reinforcing member of the inner carcass inlay (6') surrounding the core (5).

3. The two-wheeled vehicle pneumatic tire (1) according to claim 2, characterized in that The bead protection band (8) ends at a radially outer end (12) with a first height (13) of 10 to 12 mm.

4. The two-wheeled vehicle pneumatic tire (1) according to any one of claims 1 to 3, characterized in that: The carcass inlay end (7') of the inner carcass inlay (6') Arranged at a second height (15) of maximum 13 mm, the second height being measured relative to the outermost turning point (14) of the reinforcing member of the inner carcass inlay (6') surrounding the core.

5. The two-wheeled vehicle pneumatic tire (1) according to claim 4, characterized in that The carcass inlay end (7') of the inner carcass inlay (6') is arranged at a second height (15) of 8 mm to 10 mm.

6. The two-wheeled vehicle pneumatic tire (1) according to any one of claims 1 to 3, characterized in that: The carcass inlay end (7') of the inner carcass inlay (6') ends in the bead region (4) from the core in front of the sidewall (3).

7. The pneumatic tire (1) for two-wheeled vehicles according to any one of claims 1 to 3, characterized in that: The bead protection band (8) is implemented as a rubberized belt with fibers.

8. The pneumatic tire (1) for two-wheeled vehicles according to claim 7, characterized in that The bead protection band (8) is implemented as a rubberized textile band.

9. The pneumatic tire (1) for two-wheeled vehicles according to any one of claims 1 to 3, characterized in that: The bead protection band (8) is a thread without mutually twisted fibers, which connects the radially outer end (12) of the bead protection band (8) with the inner end (16) of the bead protection band (8).

10. The pneumatic tire (1) for two-wheeled vehicles according to any one of claims 1 to 3, characterized in that: The bead protection band (8) is embodied as a rubberized monofilament fabric.

11. A two-wheeled vehicle pneumatic tire (1) according to any one of claims 1 to 3, characterized in that: The carcass is in direct contact with the interior of the tire (10).

12. A two-wheeled vehicle pneumatic tire (1) according to any one of claims 1 to 3, characterized in that: The tire is a "tubeless" tire or a "tubeless ready" tire.

13. The pneumatic tire (1) for two-wheeled vehicles according to any one of claims 1 to 3, characterized in that: This tire is a bicycle tire designed to run with an inner tube.

14. The pneumatic tire (1) for two-wheeled vehicles according to claim 13, characterized in that This tire is a chiseled tire.

15. The pneumatic tire (1) for two-wheeled vehicles according to any one of claims 1 to 3, characterized in that: At least in the area of ​​the sidewalls (3), the two carcass inlays (6, 6') are single layers with separate reinforcing members.

16. A two-wheeled vehicle pneumatic tire (1) according to any one of claims 1 to 3, characterized in that: The carcass inlay end (7) of the outer carcass inlay (6) of the two carcass inlays (6, 6') can be covered externally by the inner carcass inlay (6') or the bead protection band (8).

17. A two-wheeled vehicle pneumatic tire (1) according to any one of claims 1 to 3, It is characterized in that A damping rubber insert (9) made of high-elasticity rubber is arranged between the tread (2) and the tire carcass, wherein the damping rubber insert (9) has a material thickness between 0.2 mm and 1 mm; And / or a protective layer is arranged between the tread (2) and the tire carcass, and the protective layer has a tensile-resistant fabric.

18. A two-wheeled vehicle pneumatic tire (1) according to claim 17, It is characterized in that The protective layer comprises a fabric of fibers made of polyethylene terephthalate-polyacrylate.

19. A two-wheeled vehicle pneumatic tire (1) according to any one of claims 1 to 3, It is characterized in that The tire is a bicycle tire (1).

20. The two-wheeled vehicle pneumatic tire (1) according to claim 19, It is characterized in that The tyre is a racing tyre (1), a mountain bike tyre or a tyre of a bicycle having an electric motor driving the bicycle.

21. A two-wheeled vehicle having a two-wheeled vehicle pneumatic tyre (1) according to any one of claims 1 to 20, wherein the vehicle is a bicycle.

22. The two-wheeled vehicle according to claim 21, It is characterized in that The vehicle is a racing or mountain bike or a bicycle having an electric motor driving the bicycle.

23. The two-wheeled vehicle according to claim 21, It is characterized in that The vehicle is a racing bike or a mountain bike, and the tire interior (10) enclosed by the rim and the tire (1) does not contain an inner tube.

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