NL2007156C2

NL2007156C2 - Vehicle having chain tensioning apparatus.

Info

Publication number: NL2007156C2
Application number: NL2007156A
Authority: NL
Inventors: Mathieu Landre
Original assignee: Scott Sports Sa
Priority date: 2010-08-06
Filing date: 2011-07-21
Publication date: 2012-02-07
Also published as: DE102010039034A1

Description

Vehicle having chain tensioning apparatus

The present invention relates to a vehicle having a frame and a drive unit for driving a wheel or a wheel axle, whereby the drive unit can be positioned relative to the frame in 5 a multiplicity of positions. The invention further relates to a frame having an attachment unit for attaching the drive unit, and to a drive unit having a complementary attachment unit for attaching the drive unit to the frame.

A vehicle within the meaning of the present print is usually a bicycle with two wheels. 10 However, it may also be a vehicle with more than two wheels, for example with three or four wheels. In this connection there are known for example modified two-wheelers, in particular modified bicycles, in which there are provided instead of a single rear wheel for example two wheels arranged side by side. Likewise, two wheels arranged side by side can also be provided alternatively or additionally instead of a single front wheel.

15

Such a two-wheeler is for example a bicycle having a drive unit which drives at least one of the wheels of the two-wheeler, usually the rear wheel, via a power transmission unit, such as a chain or a toothed belt. In this connection, the drive unit comprises a bottom bracket with an attached crankset and pedals, so that the two-wheeler can be 20 driven by pedaling. The drive unit can additionally comprise a motor, preferably an electric motor, which supports the drive of the two-wheeler, as is the case for example with so-called pedelecs (pedal electric cycles). Accordingly, a bicycle with an auxiliary motor, for example a pedelec, also constitutes a two-wheeler within the meaning of the present invention. Alternatively, the drive unit can also comprise only a motor, for 25 example an internal combustion engine or electric motor, whereby the provision of a bottom bracket with a crankset is dispensed with.

In those two-wheelers in which the driving power is transmitted to a wheel via a power transmission unit, such as for example a chain or a toothed belt, the tension of said 30 power transmission unit, for example the toothed-belt or chain tension, must be suitably adjusted. If such a two-wheeler has for example a derailleur gear with a sprocket with several gears of different sizes on the driven rear wheel, there is typically provided a derailleur (rear derailleur) which directs the chain onto the different gears of the sprocket in targeted fashion. Such a derailleur usually at the same time performs the 2 function of a chain tensioner, keeping the chain tension constant ideally regardless of the chosen gear of the sprocket or keeping the chain tension at least within a specified range in order to ensure a dependable operation of such a derailleur gear.

5 Besides such derailleur gears with a sprocket on the rear wheel and a (rear) derailleur, however, two-wheelers are also known having only a single gear respectively on the rear wheel and also on the drive unit, as is the case for example with hub gears or with two-wheelers without a gear-changing means. In this case the length of the chain need thus not be adapted to different gears of different sizes, in contrast to a sprocket, and the 10 chain need also not be directed onto different gears in targeted fashion. Thus, the rear derailleur can be dispensed with for example. Nevertheless, the tension of the chain must be kept within a specified range, because for example an excessively tensioned chain causes elevated friction and an insufficiently tensioned chain can easily fall off the gears on the wheel and on the drive unit. Such a possibility of adjustment is also 15 necessary to be able to compensate a chain length that is increased for example by aging processes of the chain.

In this connection, there are in principle three possibilities for adjusting the chain tension on such a two-wheeler. Firstly, there can be provided a, for example, spring-20 biased chain tensioner which keeps the chain at a predetermined tension. This possibility has the disadvantage, however, that an additional component in the form of the chain tensioner is necessary, which increases the costs, the weight and the susceptibility to trouble of the two-wheeler. On the other hand, such a chain tensioner causes a deflection of the chain, thereby increasing the resistance of the chain upon 25 driving of the two-wheeler.

Secondly, the position of the driven rear wheel on the frame of the two-wheeler can be changed such that the distance between the axle of the driven wheel and the axle of the drive unit changes. Such a possibility of adjustment of the chain tension is typically 30 provided in simple two-wheelers, but also in children's bicycles, and typically permits only very inexact adjustment of chain tension. Moreover, such a variable position of the driven wheel, for example of the rear wheel, might at the same time necessitate a corresponding adaptation, that is, displacement of the damper or also of the brake system, for example upon the use of so-called V-brakes.

3

Thirdly, the position of the drive unit, that is, for example the position of the bottom bracket, can be changed on the frame such that the distance between the axle of the drive unit and the axle of the wheel changes. In this connection, it is known to position the bottom bracket in a rotatable component eccentrically to the rotation axle of the 5 rotatable component and to provide a fixation of the rotatable component on the frame of the two-wheeler by a clamping device. The rotation axle of the rotatable component lies parallel to the axle of the bottom bracket, and thus horizontally, perpendicular to the travel direction. Through the resulting circular path in which the axle of the bottom bracket moves through rotation of the rotatable component it is possible to change the 10 distance between the axle of the bottom bracket and the axle of the wheel and thus to adjust the chain tension. However, such a structure possesses disadvantages with regard to the attainable stiffness, whereby a high stiffness, in particular a high connecting or torsional stiffness, is important for an efficient drive and an efficient transmission of an exerted pedaling power to the wheel. Moreover, through the exerted pedaling power and 15 the associated torque exerted on the bottom bracket there is the danger of the rotatable component in which the bottom bracket is eccentrically arranged being unintentionally rotated, and accordingly of the chain tension being unintentionally changed. Further, the eccentric positioning of the bottom bracket in the rotatable component causes a positioning of the bottom bracket on a circular path to be predetermined, which prevents 20 the selection of ergonomically favorable positions of the bottom bracket axle. A further disadvantage results upon use of motors supporting the drive, such as for example electric motors, as are employed for example in so-called pedelecs. Such motors can be provided in principle on the axles of the wheels and drive the respective wheel directly or be provided on the bottom bracket and drive the bottom bracket spindle. The 25 provision on the axles of the wheels is disadvantageous, however, because it increases the unsuspended mass of the two-wheeler and also shifts the center of gravity of the two-wheeler in the direction of the wheel on which the motor is provided. In this respect it is desirable to attach the motor to the bottom bracket. However, such a motor would have to be firmly connected to the rotatable component in which the bottom bracket is 30 eccentrically arranged. Thus, the motor would likewise have to rotate upon rotation of the rotatable component for adjusting the chain tension. However, since such motors are typically considerably larger than the rotatable component, they would project beyond the rotatable component at least on one side, which, however, would exclude a rotation of the rotatable component. Thus, the known eccentric arrangement of the bottom 4 bracket in a rotatable component is unsuitable in particular for motor-supported or motor-driven two-wheelers such as pedelecs.

Hence, the object of the present invention is to state a vehicle in which the tension of a 5 power transmission unit can be adjusted with low effort and a high mechanical stiffness is obtained, whereby at the same time the provision of a motor should be possible.

This object is achieved by a frame, by a drive unit, and by a two-wheeler according to the coordinated claims. Preferred embodiments and developments of the invention are 10 stated in the dependent claims.

The present invention is based on the finding that through a drive unit arranged slidably relative to the frame, which can be fastened to the frame at a multiplicity of positions the necessary stiffness, in particular connecting or torsional stiffness, which is necessary 15 for example for an efficient transmission of pedaling power to a driven wheel, can be attained, on the one hand, and a motor can also be provided in the drive unit, because the drive unit now need no longer be designed as a rotatable component, on the other hand.

20 Accordingly, the vehicle frame according to the invention comprises a receiving means for attaching a wheel axle of a wheel and an attachment unit for attaching a drive unit for driving the wheel via a power transmission unit, such as for example a chain or a toothed belt. The attachment unit of the frame is configured such that the drive unit is slidable relative to the frame and fastenable to the frame in a multiplicity of positions.

25 The corresponding drive unit for attachment to such a frame according to the invention comprises an attachment unit complementary to the attachment unit of the frame, which cooperates with the attachment unit of the frame such that the drive unit is slidable relative to the frame and fastenable to the frame in a multiplicity of positions. A vehicle according to the invention thus comprises a driven wheel with a wheel axle, a frame as 30 described above, and a drive unit as described above which drives the wheel of the vehicle.

The wheel axle of the wheel driven by the drive unit via the power transmission unit is attached in the simplest case in a specified, preferably unchangeable, position relative to 5 the frame or, in the case of a fully suspended vehicle, relative to the corresponding frame component, for example the rear wheel swing arm or the front fork. The vehicle may thus be an unsuspended vehicle or two-wheeler, such as for example an unsuspended bicycle, a partly suspended vehicle or two-wheeler, such as for example a 5 so-called hardtail, or a completely suspended vehicle or two-wheeler, such as for example a fully suspended bicycle. The driven wheel is preferably the rear wheel, but it can also be the front wheel. The drive unit possesses for example a drive shaft with a drive axle which does not coincide with the wheel axle of the driven wheel. Preferably, the drive unit is mounted outside the wheel, and the power transmission unit is 10 preferably a chain or a toothed belt. The drive axle and the wheel axle are preferably arranged parallel in order to guarantee an efficient transmission of the driving power.

The attachment unit of the frame allows the drive unit to be slid relative to the frame preferably along a specified sliding path, and to be fastened to the frame in a 15 multiplicity of positions which preferably differ by the distance between the axle of the drive unit and the axle of the wheel. Thus, the power transmission unit, for example a chain or a toothed belt, can be tensioned, and thus the chain tension or toothed belt tension be suitably adjusted by selection of a suitable position of the drive unit on the frame from the multiplicity of adjustable positions.

20

Preferably, the specified sliding path is aligned radially or at least substantially radially to the axle of the driven wheel. As a result, the distance between wheel axle of the driven wheel and the axle of the drive unit is maximally changed at minimal sliding of the drive unit.

25

The provision, according to the invention, of a drive unit which is slidable relative to the frame preferably along an elongated sliding path permits the torque generated by the drive shaft to be absorbed better than is the case with the known eccentric arrangement of a drive shaft in the form of a bottom bracket within a rotatable component, which 30 permits a higher stiffness, in particular a higher torsional stiffness, of the unit comprising frame and drive unit upon transmission of the driving power to the driven wheel.

6

The transition, according to the invention, from the known rotation of a rotatable component in which the drive shaft is eccentrically arranged to a sliding along a sliding path increases the torsional stiffness of the vehicle, which is advantageous for an efficient transmission of the driving power to the driven wheel.

5

In a preferred embodiment of the drive unit, the latter comprises a bottom bracket with a bottom bracket spindle configured for attaching a crankset and pedals for exertion of a pedaling power by an operator of the vehicle. Alternatively, the drive unit comprises a motor, preferably an electric motor. In a particularly preferred embodiment, the drive 10 unit comprises both a bottom bracket with a bottom bracket spindle and a motor, preferably an electric motor, which supports for example the drive of the vehicle in addition to the pedaling power of an operator, as is the case for example with so-called pedelecs. The motor drives the bottom bracket spindle preferably directly here and the bottom bracket spindle constitutes the drive shaft, and the axle of the bottom bracket, 15 which coincides with the axle of the bottom bracket spindle, constitutes the drive axle. Accordingly, the attachment unit of the frame for attaching the drive unit is provided in an area of the vehicle frame where the bottom bracket is usually arranged, for example in a lower area of a seat tube, that is, in the area where seat tube, down tube and chain stay converge. Such a direct drive of the bottom bracket spindle by the motor allows the 20 motor to be provided directly on the bottom bracket, by which the motor - at least with suspended vehicles - is part of the suspended mass of the two-wheeler, on the one hand, and the center of gravity of the vehicle is shifted downward, on the other hand.

In a particularly preferred embodiment, the sliding path along which the drive unit can 25 be slid relative to the frame and along which the drive unit can be fastened in a multiplicity of positions is a specified, elongated, non-closed path. The total sliding path thus preferably points substantially in a single specified direction relative to the frame. Said specified direction preferably points in a radial direction with regard to the wheel axle of the driven wheel. If the drive unit comprises a bottom bracket and is arranged in 30 a lower area of the seat tube, so that for example the bottom bracket axle is arranged at the same height relative to the ground as the wheel axle, the specified direction preferably points horizontally in the travel direction. Because the pedaling power of an operator of the two-wheeler is provided to the drive unit primarily vertically, the pedaling power thus acts at least substantially perpendicularly to the sliding path, by 7 which a torsionally stiff structure of the unit comprising drive unit and frame is possible with especially low effort, with an unintentional changing of the position of the drive unit relative to the frame moreover being excluded. This thus permits a mechanically simple configuration of the attachment means of the frame, and also optionally of the 5 complementary attachment means of the drive unit.

The sliding path can be of non-straight, for example curved, configuration, by which an ergonomically favorable configuration and/or a structurally advantageous configuration of the sliding path is possible. In the simplest case, however, the sliding path is 10 configured as a straight line, which preferably extends horizontally in the travel direction of the vehicle.

In a further preferred embodiment, the drive unit and/or the frame of the two-wheeler comprises a positioning means with which the position of the drive unit along the 15 sliding path can be adjusted continuously or in discrete steps. In the simplest case, the positioning means comprises a screw with which the position of the drive unit can be adjusted relative to the frame, preferably against the force exerted by the tension of the power transmission unit. Subsequently, the drive unit can be fastened in the position specified by the positioning means, by for example corresponding screws or nuts being 20 tightened. For example, the positioning means comprises, besides the screw, a threaded hole in the frame or its attachment unit, said hole being engaged by the screw, as well as a stop in the drive unit or its complementary attachment unit, such that the screw slides the drive unit relative to the frame in the direction of increasing distance between drive unit and driven wheel, against the force exerted by the tension of the power 25 transmission unit. Alternatively, the threaded hole can also be provided on the drive unit or its complementary attachment unit, and the stop on the frame or its attachment unit.

In this connection, it is advantageous when the screw is not placed on the frame centrally, but rather on that side of the frame where the power transmission unit is also 30 provided.

In a further advantageous embodiment, the attachment unit of the frame and/or the complementary attachment unit of the drive unit comprises one or several contact areas which permit an areal, preferably large-area, contact between frame and drive unit or 8 between attachment unit and complementary attachment unit. This makes it possible, on the one hand, to easily create a frictional connection between drive unit and frame or between attachment unit and complementary attachment unit, which guarantees high friction and thus a stable attachment of the drive unit to the frame. On the other hand, it 5 makes it possible to realize a high-quality mechanical guidance for the drive unit upon sliding along the sliding path, which for example prevents the drive unit from canting upon sliding. In a particularly preferred embodiment, both the attachment unit of the frame and the complementary attachment unit of the drive unit comprise one or several contact areas which come to lie flat one on the other, and which are arranged such that 10 said units can be brought into frictional engagement along the total sliding path.

In an advantageous embodiment of the attachment unit of the frame, said unit comprises at least one oblong hole, preferably a straight oblong hole, which permits slidable attachment of the drive unit. Accordingly, the complementary attachment unit of the 15 drive unit comprises at least one rod, threaded rod or screw which engages the oblong hole of the attachment unit of the frame. The oblong hole thus defines the sliding path along which the drive unit is slidable relative to the frame. The oblong hole of the attachment unit is preferably a through hole, and the rod, threaded rod or screw of the complementary attachment unit is tightened directly or by means of a further screw or 20 nut, for fastening the drive unit. The complementary attachment unit of the drive unit can be constructed here in two-part fashion, the two components of the complementary attachment unit being positioned for example on both sides of the frame and tightened against each other for fastening the drive unit. The oblong hole preferably constitutes a through slot in the attachment unit.

25

In a particularly preferred embodiment, the attachment unit of the frame comprises a multiplicity of parallel aligned oblong holes, that is, a multiplicity of oblong holes whose sliding paths are respectively configured identically. Accordingly, the complementary attachment means of the drive unit comprises a multiplicity of rods, 30 threaded rods and/or screws which engage the multiplicity of oblong holes of the attachment unit of the frame.

In a further preferred embodiment, the attachment unit of the frame comprises a frame-side fastening means which permits a slidable attachment of the drive unit. Accordingly, 9 the complementary attachment unit of the drive unit comprises a drive unit-side fastening means which constitutes a fastening means complementary to the frame-side fastening means of the attachment unit of the frame, and comprises an oblong hole which permits a slidable attachment of the drive unit to the frame and defines the sliding 5 path. The frame-side fastening means is for example a protrusion such as a pin, a bolt or a threaded rod which engages the oblong hole of the drive unit-side fastening means, by which the drive unit can be slid along the oblong hole of the drive unit-side fastening means. Alternatively, the frame-side fastening means can also be a threaded hole. The drive unit is then fixed on the frame for example using a screw.

10

In a particularly preferred embodiment, the attachment unit of the frame comprises a multiplicity of such frame-side fastening means which are preferably arranged pairwise on both sides of the frame. Accordingly, the complementary attachment unit comprises a corresponding multiplicity of drive unit-side, complementary fastening means which 15 are preferably likewise arranged pairwise on both sides of the drive unit.

Further embodiment examples and advantages of the invention will hereinafter be explained by way of example with reference to the accompanying figures. The examples represent preferred embodiments which in no way restrict the invention. The 20 shown figures are schematic representations which do not reflect the real proportions, but rather serve to improve the clearness of the various embodiment examples.

Specifically, the figures show:

Figure 1 a side view of a two-wheeler; 25 Figure 2 a perspective exploded view of a first embodiment example;

Figure 3 a perspective view of the first embodiment example;

Figure 4 a perspective view of a second embodiment example; and

Figure 5 a perspective view of a third embodiment example.

30 In Figure 1 there is depicted a side view of an embodiment example of a two-wheeler. It comprises a frame 1 with a down tube 2, a seat tube 3 and a chain stay 4. The twowheeler further comprises two wheels, the rear wheel being the driven wheel 5, which is driven by the drive unit 7 via a power transmission unit in the form of a chain 6. The drive unit is arranged in the area of the intersection point of down tube 2, seat tube 3 10 and chain stay 4. As indicated by the double arrow in the figure, the drive unit 7 is mounted slidably relative to the frame 1, by which the distance between the drive unit 7 and the axle of the driven wheel 5 changes and thus the chain tension of the chain 6 can be adjusted.

5

In Figure 2 there is depicted a perspective exploded drawing of the drive unit 7, which explains its fastening to the frame 1. In Figure 3 there is depicted the drive unit 7 from Figure 2 in the assembled state. The fastening unit 7 comprises a drive shaft 8 which at the same time constitutes a bottom bracket spindle of a bottom bracket. On the drive 10 unit 8 there is arranged, as depicted in Figure 1, a crankset with pedals, which was omitted in Figures 2 and 3 for reasons of clarity. There was likewise omitted in Figure 2 for reasons of clarity a gear firmly connected to the drive shaft 8, said gear being used for driving the driven wheel 5 via the chain 6. In the drive unit 7 there is provided an electric motor by means of which the drive shaft 8 can be supportingly driven. For 15 reasons of clarity, the cabling of the electric motor is likewise omitted in Figures 2 and 3.

In the frame 1 there are provided, in this embodiment example, three through holes in the form of oblong holes 9 which constitute the attachment unit of the frame for 20 attaching the drive unit 7. The screws 10 engage the oblong holes 9 and, in the tightened state, fasten the drive unit 7 to the frame 1. For this purpose, the screws 10 further engage the threaded holes 10a in the drive unit 7. In the loosened, untightened state of the screws 10 they can be slid within the oblong holes, by which a sliding of the drive unit 7 relative to the frame 1 along the oblong holes 9 is possible. The oblong holes 9 25 thus define the sliding path of the drive unit 7. In this connection it is advantageous when the screws 10 are not screwed directly into the oblong holes, but rather cooperate with the drive unit 7 and the frame via a further fastening member 7a.

In the shown embodiment example there is further depicted a positioning means with a 30 screw 11, said screw being able, in cooperation with a through hole 1 la in the frame 1 and a threaded hole 1 lb in the drive unit 7, to adjust the position of the drive unit 7 relative to the frame 1 along the oblong holes. As evident from Figures 2 and 3, the screw 11 works against the force which is exerted by the chain tension of the chain 6. Thus, the tension of the chain 6 can be adjusted in the loosened state of the screws 10 by 11 a suitable position of the drive unit 7 being found and subsequently the screws 10 can be tightened for fixing the drive unit 7 on the frame 1. As depicted in Figures 2 and 3, the screw 11 is not arranged on the frame 1 centrally, but rather on the side of the frame 1 where the chain 6 is also provided, which is the side on the right in the travel direction 5 in the shown embodiment example. Accordingly, a non-canting sliding of the drive device 7 in the oblong holes 9 is supported.

The oblong holes 9 are configured in the shown embodiment example such that a sliding of the drive unit 7 on the frame 1 is possible horizontally in the travel direction. 10 Accordingly, the screw 11 also creates a positioning possibility horizontally in the travel direction for the drive unit 7 relative to the frame 1. In the depicted embodiment example there are provided, beside the screws 10, further rods 13 with threaded holes which create an additional mechanical connection between the drive unit 7 and the fastening apparatus 7a. Said rods lie outside the oblong holes in the shown embodiment 15 example, as is evident for example from the perspective view in Figure 3.

Further, contact areas 12 are provided on the frame around the oblong holes 9.

Likewise, contact areas 12 are provided around the threaded holes 10a on the side facing the frame. Such contact areas are also provided on the fastening apparatus 7a 20 around the through holes 10b on the side facing the frame, but they are hidden in

Figures 2 and 3. Said contact areas 12 are of plane configuration and permit the creation of a frictional connection with high friction between the drive unit 7, optionally the fastening unit 7a, and the frame 1, on the one hand, and a non-canting guidance upon sliding of the drive unit 7 along the oblong holes, on the other hand.

25

In a second embodiment example depicted in Figure 4, the oblong holes 9 are provided alternatively in the drive unit 7 and the fastening means 7a. In the frame 1 there are provided simple through holes for the screws 10 instead of the oblong holes, in comparison to the embodiment example depicted in Figures 2 and 3. This likewise 30 permits a sliding of the drive unit 7 relative to the frame 1, whereby the fastening of the drive unit 7 to the frame 1 can again be realized using screws 10. In this case, too, contact areas 12 can again be provided as bearing surfaces between the frame 1, the drive unit 7 and the fastening apparatus 7a.

12

In a third embodiment example depicted in Figure 5 there are also provided on the frame 1 protrusions in the form of threaded rods 15 which engage the oblong holes 9 of the drive unit 7. Accordingly, the provision of through holes in the frame 1 can be avoided, thereby avoiding a mechanical weakening of the frame by such through holes. 5 The drive unit 7 is fastened to the frame 1 by nuts 15 on the threaded rods. Because no components passing through the frame such as through holes, oblong holes or through screws are provided for fastening the drive unit 7 in the third embodiment example, the fastening means 7a can be dispensed with in comparison to the preceding embodiment examples. The drive unit 7 is thus fastened only on one side.

10

In a non-depicted variant of the third embodiment example, threaded holes and screws are respectively provided instead of threaded rods 14 and nuts 15.

Claims

1. Frame voor een voertuig, in het bijzonder tweewieler, met - opneemmiddelen voor het bevestigen van een wielas van een wiel, en 5 - een bevestigingseenheid voor het bevestigen van een aandrijfeenheid voor het aandrijven van het wiel via een energieoverdrachtseenheid, waarbij de bevestigingseenheid zodanig is uitgevoerd dat de aandrijfeenheid verschuifbaar is ten opzichte van het frame en bevestigbaar aan het frame in een veelheid aan posities. 10A frame for a vehicle, in particular two-wheeler, with - receiving means for attaching a wheel axle of a wheel, and - a mounting unit for mounting a drive unit for driving the wheel via an energy transfer unit, the mounting unit being such The drive unit is designed to be slidable with respect to the frame and attachable to the frame in a plurality of positions. 10

2. Frame volgens conclusie 1, met het kenmerk dat de bevestigingseenheid voor het bevestigen van de aandrijfeenheid is voorzien aan een onderste gebied van een zadelbuis.2. Frame according to claim 1, characterized in that the fixing unit for fixing the drive unit is provided on a lower area of a seat tube.

3. Frame volgens conclusie 1 of 2, met het kenmerk dat de bevestigingseenheid zodanig is uitgevoerd dat de aandrijfeenheid verschuifbaar is over een langgerekte schuifbaan die bij voorkeur ten minste in hoofdzaak in de rijrichting wijst, waarbij de schuifbaan bij voorkeur een rechte configuratie heeft.3. Frame as claimed in claim 1 or 2, characterized in that the mounting unit is designed such that the drive unit can be slid over an elongated sliding track which preferably points at least substantially in the direction of travel, the sliding track preferably having a straight configuration.

4. Frame volgens één van de voorgaande conclusies, omvattende positioneringsmiddelen door middel waarvan de positie van de aandrijfeenheid op het frame kan worden ingesteld, waarbij de positioneringsmiddelen bij voorkeur een schroef omvatten.4. Frame as claimed in any of the foregoing claims, comprising positioning means by means of which the position of the drive unit on the frame can be adjusted, wherein the positioning means preferably comprise a screw.

5. Frame volgens één van de voorgaande conclusies, met het kenmerk dat de bevestigingseenheid ten minste één contactvlak omvat voor het door middel van wrijving bevestigen van de aandrijfeenheid aan het frame.Frame according to one of the preceding claims, characterized in that the fixing unit comprises at least one contact surface for fixing the drive unit to the frame by means of friction.

6. Frame volgens één van de conclusies 1 tot en met 5, met het kenmerk dat de 30 bevestigingseenheid ten minste één langwerpig gat heeft dat een verschuifbare bevestiging van de aandrijfeenheid mogelijk maakt, waarbij de bevestigingseenheid bij voorkeur een veelheid aan parallelle in één lijn liggende langwerpige gaten omvat.6. Frame as claimed in any of the claims 1 to 5, characterized in that the mounting unit has at least one elongated hole that allows a sliding attachment of the drive unit, the mounting unit preferably having a plurality of parallel aligned elongated holes.

7. Frame volgens één van de conclusies 1 tot en met 5, met het kenmerk dat de bevestigingseenheid ten minste één bevestigingsmiddel aan de zijde van het frame omvat, zoals een van schroefdraad voorzien gat of een uitsteeksel zoals een pen, een bout of een van schroefdraad voorziene staaf, dat een verschuifbare bevestiging van de 5 aandrijfeenheid mogelijk maakt, en dat de bevestigingseenheid bij voorkeur een veelheid aan dergelijke bevestigingsmiddelen aan de zijde van het frame omvat, welke bij voorkeur respectievelijk paarsgewijs aan weerszijden van het frame zijn aangebracht.Frame according to one of claims 1 to 5, characterized in that the fixing unit comprises at least one fixing means on the side of the frame, such as a threaded hole or a protrusion such as a pin, a bolt or a threaded rod, which enables sliding attachment of the drive unit, and that the attachment unit preferably comprises a plurality of such fastening means on the side of the frame, which are preferably arranged respectively pairwise on either side of the frame.

8. Aandrijfeenheid voor het bevestigen aan een frame volgens één van de conclusies 1 tot en met 7, met een bevestigingseenheid complementair aan de bevestigingseenheid van het frame en zodanig samenwerkend met de bevestigingseenheid van het frame dat de aandrijfeenheid verschuifbaar is ten opzichte van het frame en bevestigbaar aan het frame in een veelheid aan posities. 15A drive unit for attaching to a frame according to any of claims 1 to 7, with a mounting unit complementary to the mounting unit of the frame and cooperating with the mounting unit of the frame such that the drive unit is slidable with respect to the frame and attachable to the frame in a variety of positions. 15

9. Aandrijfeenheid volgens conclusie 8, met het kenmerk dat de aandrijfeenheid een bodembeugel omvat met een crankstel en/of een motor, in het bijzonder een elektrische motor.9. Drive unit according to claim 8, characterized in that the drive unit comprises a bottom bracket with a crankset and / or a motor, in particular an electric motor.

10. Aandrijfeenheid volgens conclusie 8 of 9, met het kenmerk dat de complementaire bevestigingseenheid zodanig samenwerkt met de bevestigingseenheid van het frame dat de aandrijfeenheid verschuifbaar is over een langgerekte schuifbaan, die bij voorkeur ten minste in hoofdzaak in de rijrichting wijst, waarbij de schuifbaan bij voorkeur een rechte configuratie heeft. 2510. Drive unit according to claim 8 or 9, characterized in that the complementary mounting unit cooperates with the mounting unit of the frame in such a way that the drive unit can be slid over an elongated sliding track, which preferably points at least substantially in the direction of travel, wherein the sliding track at preferably has a straight configuration. 25

11. Aandrijfeenheid volgens één van de conclusies 8 tot en met 10, gekenmerkt door positioneringsmiddelen door middel waarvan de positie van de aandrijfeenheid op het frame kan worden ingesteld, waarbij de positioneringsmiddelen bij voorkeur een schroef omvatten. 30Drive unit according to one of claims 8 to 10, characterized by positioning means by means of which the position of the drive unit on the frame can be adjusted, the positioning means preferably comprising a screw. 30

12. Aandrijfeenheid volgens één van de conclusies 8 tot en met 11, met het kenmerk dat de complementaire bevestigingseenheid ten minste één contactvlak omvat voor het door middel van wrijving bevestigen van de aandrijfeenheid aan het frame, dat bij voorkeur samenwerkt met een contactvlak van de bevestigingseenheid van het frame.Drive unit according to one of claims 8 to 11, characterized in that the complementary mounting unit comprises at least one contact surface for frictionally fixing the drive unit to the frame, which preferably cooperates with a contact surface of the mounting unit of the frame.

13. Aandrijfeenheid volgens één van de conclusies 8 tot en met 12, voor bevestiging 5 aan een frame volgens conclusie 6, met het kenmerk dat de complementaire bevestigingseenheid ten minste één staaf, van schroefdraad voorziene staaf of schroef omvat die aangrijpt op het ten minste ene langwerpige gat, waarbij de complementaire bevestigingseenheid bij voorkeur een veelheid aan staven, van schroefdraad voorziene staven en/of schroeven omvat welke respectievelijk aangrijpen op de veelheid aan 10 langwerpige gaten.Drive unit according to one of claims 8 to 12, for attachment to a frame according to claim 6, characterized in that the complementary attachment unit comprises at least one rod, threaded rod or screw which engages the at least one elongated hole, the complementary mounting unit preferably comprising a plurality of rods, threaded rods and / or screws which respectively engage the plurality of elongated holes.

14. Aandrijfeenheid volgens één van de conclusies 8 tot en met 12, voor bevestiging aan een frame volgens conclusie 7, met het kenmerk dat de complementaire bevestigingseenheid ten minste één bevestigingsmiddel aan de zijde van de 15 aandrijfeenheid omvat met een langwerpig gat, waarbij de bevestigingsmiddelen complementair zijn aan de bevestigingsmiddelen aan de zijde van het frame en een verschuifbare bevestiging van de aandrijfeenheid mogelijk maken, en waarbij de complementaire bevestigingseenheid bij voorkeur een veelheid aan complementaire bevestigingsmiddelen omvat welke bij voorkeur respectievelijk paarsgewijs aan 20 weerszijden van de aandrijfeenheid zijn aangebracht.14. Drive unit according to one of claims 8 to 12, for attachment to a frame according to claim 7, characterized in that the complementary attachment unit comprises at least one attachment means on the side of the drive unit with an elongated hole, the attachment means be complementary to the mounting means on the frame side and allow slidable mounting of the drive unit, and wherein the complementary mounting unit preferably comprises a plurality of complementary mounting means which are preferably respectively arranged in pairs on either side of the drive unit.

15. Voertuig, in het bijzonder tweewieler, bij voorkeur fiets met trapondersteuning, omvattende - een wiel met een wielas, 25. een frame volgens één van de conclusies 1 tot en met 7, en - een aandrijfeenheid volgens één van de conclusies 8 tot en met 14, waarbij de aandrijfeenheid verschuifbaar is ten opzichte van het frame en bevestigbaar aan het frame in een veelheid aan posities.A vehicle, in particular a two-wheeler, preferably a bicycle with pedal support, comprising - a wheel with a wheel axle, 25. a frame according to one of claims 1 to 7, and - a drive unit according to one of claims 8 to 7 with 14, wherein the drive unit is slidable with respect to the frame and attachable to the frame in a plurality of positions.