Single-track, motorized two-wheeler

Abstract

A single-track, motor-driven two-wheeler with a roof (10), having two spaced-apart beams (12, 14) extending upwards from a vehicle frame (15) to the rear to form front and rear pillars (16, 20) which transition into side roof beams (18), characterized in that, viewed against the direction of travel, a rear-view mirror (26) is provided on the associated pillar (16) behind at least one front pillar (16) and is at least 50% obscured by the front pillar (16) when viewed from the front.

Description

[0001] The invention relates to a single-track, motor-driven two-wheeler with a roof having two spaced-apart side rails extending upwards and backwards from a vehicle frame to form front and rear pillars that transition into side roof rails.

[0002] One such two-wheeler is the well-known BMW C1, whose roof structure is formed by two lateral metal beams that run in an arc from the front end of the frame upwards and to the rear.

[0003] DE 196 32 827 A1 relates to a motor scooter with a safety bar which is attached to the frame from the steering head by a hinge and led over the shoulders to the rear, where it is height-adjustable and positively linked to a roll bar.

[0004] The KR 10 2015 0 105 746 A concerns a cabin scooter with doors that swing upwards to the side.

[0005] The purpose of the invention is to optimize such a two-wheeler, which may also be ridden without a helmet, so that it is less susceptible to crosswinds.

[0006] This task is solved in the case of a two-wheeler of the type mentioned above by having a rear-view mirror on the associated pillar, at least 50% obscured behind at least one front pillar when viewed against the direction of travel.

[0007] Previously, the rearview mirrors were mounted at the front of the pillars using separate brackets. These mirrors protruded laterally from the pillars to provide the rider with good rearward visibility. The invention takes a different approach, positioning the rearview mirrors in the slipstream of the pillars. This makes them more aerodynamically optimized and less susceptible to being knocked out of alignment by pedestrians when the motorcycle is parked.

[0008] Preferably, the rearview mirror is at least 85% obscured by the corresponding pillar, or even completely obscured by the corresponding front pillar. This applies, of course, to a front view facing away from the direction of travel. Furthermore, the above data refers to the mirror surface area.

[0009] The front pillars may be wider in the area of ​​the rearview mirror than above and below the rearview mirror area, with this wider area naturally transitioning into the narrower areas above and below the rearview mirror area without any step or the like.

[0010] The front pillars can be further apart in the area of ​​the rearview mirror (distance measured perpendicular to the direction of travel) than above and below the rearview mirror area. This means that, viewed from the front, the front pillars diverge in a slight arc from the bottom up to the rearview mirror area, before converging again. This significantly improves the driver's view both forwards and to the sides, and also positions the rearview mirrors more optimally for rearward visibility.

[0011] Optionally, the front pillars can even have their greatest distance measured horizontally and perpendicular to the direction of travel in the rearview mirror area.

[0012] To optimize aerodynamics, it is planned that the pillars will optionally have an outward-facing, rounded bend in the rearview mirror area when viewed from the front, defining this widest area of ​​the front pillars.

[0013] The pillars can have a cross-section in the rearview mirror area that tapers forward in the direction of travel. This optimizes aerodynamics.

[0014] There is a windshield between the front pillars.

[0015] The columns run in one piece from front to back and are made primarily of fiber-reinforced plastic, and are attached to the frame at the front and back.

[0016] The two-wheeler preferably comprises side rails that form the columns in sections and are connected to each other by the roof. All parts are joined together in one piece, e.g. by hot or cold bonding.

[0017] In hot bonding, resin-impregnated fabrics with a high fiber volume fraction (prepregs) are cured in an autoclave, or dry non-woven fabrics and / or braided semi-finished products are cured in one piece by subsequent resin infusion in a resin injection process (also called resin transfer molding) at high temperature and high pressure. In cold bonding, finished plastic parts, especially carbon fiber-reinforced ones, are bonded together. With both processes, components bonded in this way cannot be separated from each other without damage.

[0018] According to one embodiment, the frame members can be curved and designed as hollow bodies running continuously from the front lower to the rear lower end of the passenger compartment. Due to this structure and shape, the frame members can elastically deform to a certain degree under load during driving, thereby dissipating forces. This provides particularly good shielding and protection for the occupant within the passenger compartment.

[0019] In principle, the beams can be manufactured entirely as hollow profiles, preferably with constant wall thicknesses. This can be achieved by manufacturing the beams as continuous closed profiles or by manufacturing the beams, at least in sections, from inner and outer parts bonded together.

[0020] Preferably, the passenger cell is a fiber-reinforced plastic component. For example, the passenger cell is made of carbon fiber reinforced plastic (CFRP) or glass fiber reinforced plastic (GFRP). Furthermore, the passenger cell can also be a composite of different fibers, such as CFRP and Kevlar, CFRP and glass fibers, CFRP, Kevlar and glass fibers, or glass fibers and Kevlar. Alternatively or additionally, natural fibers may be included.

[0021] In general, a composite of different layers made of the same material is also conceivable. Such a composite could, for example, comprise one layer of CFRP, two layers of GFRP, and another layer of CFRP. By using a fiber-reinforced component, the weight of the passenger cell is significantly reduced compared to a passenger cell with a structure made of conventional materials, such as aluminum. This reduces the energy consumption of the two-wheeler during operation and improves its handling due to the lowered center of gravity.

[0022] A composite material with different fibers can be produced, for example, by having at least one layer used to manufacture a fiber-reinforced component contain different fibers. Alternatively, several layers can be used to manufacture a component, each containing different fibers, and in particular, each layer containing only one type of fiber. The aforementioned examples can also be combined. That is, at least one layer contains different fibers, and at least one other layer contains only one type of fiber.

[0023] In contrast to the prior art, in the invention the rearview mirror mounting is optionally located exclusively on the rearward side (in the direction of travel) of the front, associated pillar, meaning that the two front pillars are smooth in the area of ​​the rearview mirror. The rearview mirror mounting therefore does not impair the aerodynamics.

[0024] The height of the rearview mirror can optionally be greater than the width in order to optimally adapt the mirror area to the shape of the front pillar.

[0025] Further features and advantages of the invention will become apparent from the following description and from the following drawings, to which reference is made.

[0026] The drawings show: Fig. 1 a perspective front view of a two-wheeler according to the invention, Fig. 2 a perspective view from a rearward angle of the interior of the two-wheeler in the area of ​​the front pillars, and Fig. 3 a cross-section through one of the front pillars in the area of ​​a rearview mirror.

[0027] In Fig. Figure 1 shows a single-track, motorized two-wheeler with a roof 10, which has two spaced-apart beams 12, 14 that extend in an arc shape from the frame 15 of the vehicle, starting near the front wheel and first diagonally upwards to form front columns 16.

[0028] The preferably one-piece beams 12, 14 extend upwards from the front pillars 16 and over the occupants to form lateral roof beams 18. Behind the roof beams 18, the beams extend downwards again to form rear pillars 20.

[0029] The roof 10 is formed, among other things, by connecting the roof beams 18 through a roof surface 22.

[0030] Preferably, the roof surface 22 is an integral part of the entire roof and thus also of the pillars. This resulting one-piece passenger cell is preferably made of fiber-reinforced plastic.

[0031] The rear pillars 20 can be joined in one piece to a rear wall 24, the rear wall 24 also being part of the one-piece roof 10.

[0032] As in Fig. As can be seen in Figure 1, the two-wheeler has no protruding rearview mirrors 26. The rearview mirrors 26 are, in fact, as Fig. Figure 2 shows that the mirrors are obscured from the front by the front pillars 12 and 14, specifically by at least 50%, and in particular by at least 85%, preferably even completely. This means that the rearview mirrors 26 are also completely in the slipstream of the pillars 16.

[0033] Also Fig. Figure 3, the cross-section through the columns 16 in the area of ​​the rearview mirror 26, illustrates the improved aerodynamics due to the position of the rearview mirrors 26.

[0034] The rearview mirrors 26 can be movably mounted on the pillars 16 via an adjustment mechanism 28, allowing them to swivel in all directions. This mechanism 28 is also located entirely on the rear side of the pillars 16, facing the airflow.

[0035] As in the Fig. 1 and Fig. As can be seen in Figure 2, the columns 16 in the area of ​​the rearview mirrors are wider than above and below the rearview mirror area, with the narrower lower area being designated with reference numeral 30 and the narrower upper area with reference numeral 32.

[0036] Furthermore, the clear width, that is, the distance between the pillars 16 as viewed from the front, is optionally greater in the rearview mirror area than above and / or below the rearview mirror area. The width is in Fig. 2 indicated by the reference symbol a.

[0037] Optionally, the front pillars 16 can even have their greatest distance in the area of ​​the rearview mirrors 26.

[0038] The front pillars 16 have, viewed from the front, an outwardly extending, rounded bend 33 in the area of ​​the rearview mirrors 26 (see Fig. 2).

[0039] For optimal aerodynamics, as in Fig. 3 can be seen, the front pillars 16 at least in the rearview mirror area are provided with a tapered cross-section, that is, the cross-section tapers towards the front in the direction of travel.

[0040] A windshield 40 is provided between the front pillars 16.

[0041] To integrate the largest possible rearview mirror 26, it can have a height greater than its width, as is the case in Fig. 2 is clearly visible.

[0042] Another variant of the invention provides that the distance between the two rearview mirrors 26 is greater than the width of the roof in the area of ​​the rear pillars 20 at the same vertical height, so that the rearview mirrors allow a good view to the rear.

[0043] The aforementioned features do not necessarily have to be used in combination with each other, but can also be used individually or in other combinations to generate advantages.

Claims

[1] Single-track, motor-driven two-wheeler with a roof (10) having two spaced-apart beams (12, 14) extending upwards from a vehicle frame (15) from the front to the rear to form front and rear pillars (16, 20) which transition into side roof beams (18), characterized by , that, viewed against the direction of travel, a rear-view mirror (26) is present on the associated pillar (16) behind at least one front pillar (16), obscured at least 50% by the front pillar (16) when viewed from the front. [2] Two-wheeler according to claim 1, characterized by , that the rearview mirror (26) is obscured by at least 85% of the associated pillar (16) when viewed from the front. [3] Two-wheeler according to claim 1 or 2, characterized by , that the front pillars (16) in the area of ​​at least one rear-view mirror (26) are wider than above and / or below the rear-view mirror area. [4] Two-wheeler according to any one of the preceding claims, characterized by, that the front pillars (16) are further apart in the area of ​​at least one rear-view mirror (26) than above and / or below the rear-view mirror area. [5] Two-wheeler according to any one of the preceding claims, characterized by , that the front pillars (16) have their greatest distance in the area of ​​at least one rear-view mirror (26). [6] Two-wheeler according to any one of the preceding claims, characterized by , that the front pillars (16) in the area of ​​at least one rearview mirror (26), viewed from the front, have an outwardly extending, rounded bend (32). [7] Two-wheeler according to any one of the preceding claims, characterized by , that the front pillars (16) have a cross-section that tapers in the direction of travel, at least in the area of ​​at least one rear-view mirror (26). [8] Two-wheeler according to any one of the preceding claims, characterized by , that a windshield (40) is located between the front pillars (16). [9] Two-wheeler according to any one of the preceding claims, characterized by , that the columns (12, 14) run in one piece from front to back. [10] Two-wheeler according to any one of the preceding claims, characterized by , that a rearview mirror mounting (28) is provided exclusively on the rear side in the direction of travel of the associated front pillar (16). [11] Two-wheeler according to any one of the preceding claims, characterized by , that the height of the rearview mirror (26) is greater than its width.

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