Single-track, motorized two-wheeler

Abstract

A single-track, motorized two-wheeler (10) with a self-supporting, one-piece passenger compartment (16) made of a fiber-reinforced plastic, which has two lateral, spaced-apart beams (20) which extend upwards from the front towards a roof (22) forming front pillars (24), wherein the front pillars (24) transition into roof beams and these in turn into a rear roof support structure (39), wherein the roof beams (26) are integrally connected to each other by the roof (22) as part of the passenger compartment (16), wherein the front pillars (24) extend downwards to a frame (14) of the two-wheeler (10) and are attached thereto, and the rear roof support structure (39) has rear pillars (28) which extend downwards and are attached to the frame (14) of the two-wheeler (10), characterized in that the front pillars (24) each have a mounting arm (40), forming a lower section up to the free end of the columns (24),and have an A-pillar section (42) adjoining the mounting arm (40) and extending obliquely rearward to the roof rail (26), wherein the A-pillar section (42) has a forward-projecting extension (44) at the transition area to the mounting arm (40) relative to the mounting arm (40), on which a connecting structure is provided which connects the front pillars (24).

Description

[0001] The invention relates to a single-track, motor-driven two-wheeler.

[0002] To enable helmet-free riding on motorized two-wheelers, especially motorcycles, it is known to equip the motorized two-wheelers with a dome-shaped passenger compartment that simultaneously forms the roof of the two-wheeler. This makes it possible to operate the two-wheeler in public road traffic without having to wear additional protective clothing or a helmet.

[0003] In familiar motorized two-wheelers with a roof structure, the passenger compartment is permanently attached to a substructure, for example, by a clamping connection. A disadvantage of this design is that both the assembly and disassembly of the passenger compartment are difficult. Since the roof structure makes maintenance work, especially inside the passenger compartment, difficult due to poor accessibility, the particularly complex disassembly of the roof structure, resulting from the type of connection, is especially problematic.

[0004] The DE 299 20 879 U1 concerns a wind and weather protection for two-wheelers, which is easy to assemble and disassemble.

[0005] DE 196 32 827 A1 relates to a motor scooter with safety features and weather protection. The scooter has a safety bar that positively connects the rear and steering heads and can be folded up for entry, completely covering the rider's area from above as weather protection.

[0006] DE 196 29 879 A1 relates to a vehicle frame with a step-through for a vehicle with a sprung front wheel guidance, a steering device for a front wheel, a sprung rear wheel guidance for at least one rear wheel, at least one seat for a driver and at least one protective device extending in front of, above and behind the driver, which is designed in such a way that a laterally open cage enabling the driver to pass through is created.

[0007] It is therefore an object of the present invention to simplify the attachment of the passenger compartment to a substructure.

[0008] This problem is solved according to the invention by a single-track, motor-driven two-wheeler with a self-supporting, one-piece passenger cell made of a fiber-reinforced plastic, which has two lateral, spaced-apart beams which, forming front pillars, extend upwards from the front towards a roof, wherein the front pillars transition into roof beams and these in turn into a rear roof support structure, wherein the roof beams are integrally connected to each other by the roof as part of the passenger cell, wherein the front pillars extend downwards to the frame of the two-wheeler and are attached to it, and the rear roof support structure has rear pillars which extend downwards and are attached to the frame of the two-wheeler.

[0009] By extending the front and rear pillars downwards to the frame of the two-wheeler, the pillars, and thus the entire passenger compartment, can be easily attached to the frame.

[0010] Furthermore, the frame is sufficiently stable so that the passenger compartment can reliably rest against the frame.

[0011] The passenger compartment is preferably attached using screws, allowing for quick and easy assembly and disassembly. Furthermore, the passenger compartment can be permanently and structurally securely attached to the frame.

[0012] Because the roof beams are connected to each other in one piece through the roof, the passenger compartment is particularly stable.

[0013] According to one embodiment, the roof rails transition into the rear pillars, which in turn extend downwards from the roof rails. Thus, the front pillars merge seamlessly into the roof rails, and these in turn merge seamlessly into the rear pillars, resulting in the pillars being formed as a single unit. More precisely, the pillars are arched. This design allows the passenger compartment to be particularly stable and reliably withstand the loads encountered during driving.

[0014] It is also conceivable that the roof beams and the rear pillars are separate and connected by an additional node element.

[0015] The rear pillars, for example, are connected to each other in one piece by a back wall. This ensures that the rear pillars are held and secured at a defined distance from one another. Furthermore, the back wall, which is seamlessly integrated into the pillars, increases the overall stability of the passenger compartment.

[0016] According to a preferred embodiment, the rear wall merges seamlessly into the roof. The rear wall and roof thus form a stable unit. Since the columns are also integrally connected to each other via the roof and rear wall, the passenger compartment as a whole is designed as a single, self-supporting unit. Consequently, apart from attaching the frame members and the front and rear columns to the frame, no further assembly steps are required when installing the passenger compartment. This makes assembly of the passenger compartment particularly simple and quick, which in turn has a positive impact on assembly costs.

[0017] To simplify the attachment of a seat shell, the rear wall preferably has at least one mounting opening. This mounting opening provides access to, for example, the screw points of a seat shell or other elements that are only mounted to the frame after the passenger compartment has been installed.

[0018] The back wall can have a plate-shaped structure and be connected to the rear columns by hot bonding or by cold bonding.

[0019] Alternatively or additionally, the roof can have a plate-shaped structure and be connected to the roof beams by hot bonding or cold bonding.

[0020] By using hot bonding or cold bonding, the back wall with the rear columns and / or the roof with the roof beams can form a unit that corresponds to a one-piece manufactured component.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] The beams, for example, are prefabricated hollow bodies that are partially open in the area of ​​the roof and / or rear wall and are closed by the roof or rear wall. This reduces the material required for manufacturing the passenger compartment, as fewer layers of material are needed in the area where the beams overlap with the roof and / or rear wall.

[0028] The rear pillars can have molded-in humps extending backwards over the rear wheel at seat height, forming a luggage platform. A luggage rack can thus be implemented without the need for additional components to provide a storage structure.

[0029] According to one embodiment, each front pillar has a mounting arm forming a lower section extending to the free end of the pillar, and an A-pillar section adjoining the mounting arm and extending obliquely rearward toward the roof rail. At the transition to the mounting arm, the A-pillar section has a projection extending forward beyond the mounting arm, on which a connecting structure is provided that joins the front pillars. Thus, the pillars, particularly the front pillars, are rigidly and integrally connected to one another in the front area of ​​the motorcycle, as well as at the roof and rear wall. Functionally, the front pillars can therefore be divided into two distinct sections. The upper section, extending from the mounting arm as the A-pillar section to the roof rail, structurally forms the passenger compartment.The mounting arm forms a rod-like projection that extends downwards from the passenger compartment. The pillars, and thus the entire passenger compartment, can be attached to the frame via these mounting arms. The mounting arms are easily accessible for this purpose.

[0030] For example, the mounting arms run down the sides of the frame and rest against it. This allows the mounting arms to be easily attached to the frame. Because the mounting arms rest against the frame, the passenger compartment can also be mounted and attached to the undercarriage of the two-wheeler in a particularly stable manner.

[0031] A front panel, which forms an integral part of the passenger compartment and connects the boom and the mounting arm, can be located between the boom and an upper section of the mounting arm. The front panel, for example, forms an outer skin of the passenger compartment, thus eliminating the need for additional body panels.

[0032] The front side panel preferably extends over the boom and merges into the connecting structure. Thus, the front side panel and the boom form part of the outer skin, contributing to the vehicle's design and simultaneously forming part of a load-bearing structure of the passenger cell by connecting the frame members in the front area of ​​the two-wheeler and, in particular, merging seamlessly into the frame members, more precisely into the front pillars.

[0033] The rear pillars preferably each also have a mounting arm that forms a lower section up to the free end of the pillars, and a C-pillar section adjoining the mounting arm and extending upwards to the roof rail, wherein the C-pillar section is formed integrally with the rear wall.

[0034] Further advantages and features of the invention will become apparent from the following description and from the following drawings, to which reference is made. The drawings show: - Fig. 1 a two-wheeler according to the invention with a passenger cell, - Fig. 2 the passenger compartment of the two-wheeler Fig. 1.

[0035] Fig. Figure 1 schematically shows a single-track, motor-driven two-wheeler 10 according to the invention. The two-wheeler 10 is, for example, electrically driven and comprises a battery pack 12, which is part of a frame 14.

[0036] The two-wheeler 10 has a one-piece, self-supporting passenger cell 16 with a roof 22, wherein the passenger cell 16 is firmly attached to a vehicle structure, in particular to the frame 14. The frame 14 is mainly formed by a housing 18 of the battery pack 12.

[0037] The passenger cell 16 is preferably a fiber-reinforced plastic part, which was manufactured at least partially by means of hot bonding or cold bonding.

[0038] The passenger compartment 16 has two lateral, spaced-apart beams 20 extending upwards from the front towards the roof 22, forming front columns 24. The front columns 24 transition into roof beams 26, which in turn transition into a rear roof support structure 39. The roof beams 26 are integrally connected to each other by the roof 22, which is part of the passenger compartment 16. The roof 22 has a plate-like structure; in particular, the roof 22 is a plate-like section that closes off the passenger compartment 16 at the top.

[0039] Furthermore, rear columns 28 are formed by the roof beams 26 continuing downwards behind the roof 22 and transitioning into the rear columns 28. The rear columns 28 extend downwards from the roof beams 26.

[0040] The beams 20 thus run from the front lower end to the rear lower end of the passenger compartment 16, that is, from a free end of the front pillars 24 to a free end of the rear pillars 28.

[0041] In the illustrated embodiment, the roof beams 26 are connected to each other by the roof 22 and the rear columns 28 by a back wall 30, creating a single-piece component. The back wall 30 merges seamlessly into the roof 22. However, it is also conceivable that only the roof 22 is provided to connect the beams 20.

[0042] Both the roof 22 and the rear wall 30 can be fiber-reinforced plastic parts manufactured by hot bonding or cold bonding and / or connected to the beams 20 by hot bonding or cold bonding.

[0043] The spars 20, for example, have a hollow chamber structure and are designed throughout as hollow bodies to ensure sufficient strength while still allowing the necessary deformation of the spars 20.

[0044] To save material and weight, the beams 20 are preferably prefabricated hollow bodies that are open in sections in the area of ​​the roof 22 and / or the rear wall 30 and are closed by the roof 22 or the rear wall 30.

[0045] The rear panel 30 can optionally have one or more mounting openings 33.

[0046] Both the front pillars 24 and the rear pillars 28 extend to their free ends below a seat 32 for the occupant and are attached to the frame 14 at their lower end.

[0047] The front columns 24 are attached behind the front wheel 29 and the rear columns 28 are attached in front of the rear wheel 31.

[0048] For fastening purposes, each of the front pillars 24 has a fastening arm 40 that forms a lower section extending to the free end of the pillars 24. As can be seen in the figures, the fastening arms 40 are easily accessible, which simplifies the assembly of the passenger compartment 16.

[0049] The front pillars 24 also have an A-pillar section 42 adjoining the mounting arm 40 and extending obliquely rearward toward the roof rail 26. At the transition to the mounting arm 40, the A-pillar section 42 has a forward-projecting extension 44, on which a connecting structure 45 is provided, linking the front pillars 24. The extension 44 also serves to attach the passenger compartment 16 to a front support. For this purpose, screw holes 47 are provided in the extension 44, as shown in Fig. 2 can be seen. Fig. Figure 2 shows the passenger compartment 16 of the two-wheeler 10. Fig.1 in a state disassembled from the two-wheeler 10.

[0050] The rear columns 28 each have a similarly designed mounting arm 46. In the illustrated embodiment, this extends downwards and diagonally forwards from the rear wall 30, forming an S-shape.

[0051] Each of the individual columns 24, 28 has at least one fastening point 36, 38 in the area of ​​the fastening arm 40, 46 via which the columns 24, 28 are attached to the frame 14.

[0052] In the illustrated embodiment, the rear columns 28 are each mounted on the frame 14 via two rear mounting points 36, meaning that the rear columns 28 have a total of four mounting points 36.

[0053] The front pillars 24 are each attached to the frame 14 via a front mounting point 38, i.e., via a total of two mounting points 38.

[0054] Between the boom 44 and an upper section of the mounting arm 40 there is a front side plate 48, which is an integral part of the passenger compartment 16 and connects the boom 44 and the mounting arm 40.

[0055] The front side plate 48 extends over the boom 44 and merges into the connecting structure.

[0056] Optionally, the rear pillars 28 can have molded humps projecting backwards over the rear wheel 31 at the level of the seat surface 32, forming a luggage platform.

Claims

[1] Single-track, motor-driven two-wheeler (10), with a self-supporting, one-piece passenger compartment (16) made of a fiber-reinforced plastic, which has two lateral, spaced-apart beams (20) which extend upwards from the front towards a roof (22) forming front pillars (24), wherein the front pillars (24) transition into roof beams and these in turn into a rear roof support structure (39), wherein the roof beams (26) are integrally connected to each other by the roof (22) as part of the passenger compartment (16), wherein the front pillars (24) extend downwards to a frame (14) of the two-wheeler (10) and are attached to it, and the rear roof support structure (39) has rear pillars (28) which extend downwards and are attached to the frame (14) of the two-wheeler (10), characterized by, that the front pillars (24) each have a mounting arm (40) which forms a lower section to the free end of the pillars (24), and have an A-pillar section (42) adjoining the mounting arm (40) and extending obliquely rearward to the roof rail (26), wherein the A-pillar section (42) has a cantilever (44) projecting forward at the transition area to the mounting arm (40) relative to the mounting arm (40), on which a connecting structure is provided which connects the front pillars (24). [2] Two-wheeler (10) according to claim 1, characterized by , that the roof beams (26) transition into the rear columns (28) and that these extend downwards from the roof beams (26). [3] Two-wheeler (10) according to claim 2, characterized by , that the rear columns (28) are connected to each other in one piece by a back wall (30). [4] Two-wheeler (10) according to claim 3, characterized by, that the rear wall (30) merges seamlessly into the roof (22). [5] Two-wheeler (10) according to claim 3 or 4, characterized by that the rear wall (30) has at least one mounting opening. [6] Two-wheeler (10) according to one of claims 3 to 5, characterized by , that the rear wall (30) has a plate-shaped structure and is connected to the rear columns (28) by hot bonding or by cold bonding. [7] Two-wheeler (10) according to any one of the preceding claims, characterized by , that the roof (22) has a plate-shaped structure and is connected to the roof beams (26) by hot bonding or cold bonding. [8] Two-wheeler (10) according to any one of the preceding claims, characterized by , that the beams (20) are curved and are continuously formed as hollow bodies, and extend from the front lower to the rear lower end of the passenger compartment (16). [9] Two-wheeler (10) according to claim 7 or 8, characterized by, that the beams (20) are prefabricated hollow bodies which are open in sections in the area of ​​the roof (22) and / or the rear wall (30) and are closed by the roof (22) or the rear wall (30). [10] Two-wheeler (10) according to any one of the preceding claims, characterized by , that the passenger compartment (16) is a fiber-reinforced component. [11] Two-wheeled vehicle (10) according to any of the preceding claims, characterized by , that the rear pillars (28) have molded humps projecting backwards over the rear wheel (31) at the level of the seat surface (32), forming a luggage platform. [12] Two-wheeled vehicle (10) according to any of the preceding claims, characterized by , that between the boom (44) and an upper section of the mounting arm (40) there is a front side plate (48) which is an integral part of the passenger compartment (16) and connects the boom (44) and the mounting arm (40). [13] Two-wheeler (10) according to claim 12, characterized by, that the front side panel (48) extends over the extension (44) and merges into the connecting structure.

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