Module for a bicycle, kit for a bicycle, bicycle, method for assembling a module and method for mounting a module

Abstract

Module (100) for a bicycle comprising - a module element (1) in which a hole (10) is formed, the hole (10) having a first section (11) and a second section (12), - a bushing (3) inserted into the first portion (11) of the hole (10), - a pin (4) inserted into the second portion (12) of the hole (10), wherein - the first section (11) and the second section (12) are arranged next to each other, so that the inserted bushing (3) and the inserted pin (4) are also next to each other, - the inserted bushing (3) and the inserted pin (4) interact with each other and - the module (100) is designed such that, due to this interaction, the socket (3) is held in the hole (10) and is secured against falling out of the hole (10).

Description

A module for a bicycle, a kit for a bicycle and a bicycle are specified. Furthermore, a method for assembling a module and a method for assembling a module are provided.Bicycles realize inexpensive, easy-to-handle and emission-free means of transportation. They have also become widely used as sports or fitness devices and particularly suitable types have been developed for different sports fields of use.In recent years, the demand for electric bicycles (in particular so-called "pedelecs") and that also increases despite the weights and prices that are high for bicycles. In electric bicycles, it is a concern to provide a reliably supporting drive system that enables a high power transmission. Such a drive system comprises, for example, a module which has to be mounted on a carrier, for example on the frame of the bicycle. Such modules are shown in DE 10 2018 106 946 A1 and DE 10 2018 219 898 A1.An object to be achieved is to specify an improved module for a bicycle, in particular a module which can be easily assembled and / or a module with integrated transport protection of individual components and / or a module which can be easily assembled. Further objects to be achieved are to specify a kit for such a module and a bicycle with such a module. Still further objects to be achieved are to provide methods for assembling such a module and for assembling such a module.These objects are achieved, inter alia, by the subject matters and methods of claims 1, 11, 12, 13 and 15. Advantageous embodiments and refinements are the subject matter of the remaining patent claims and will become apparent further from the following description and the figures.First, the module for a bicycle will be specified.In at least one embodiment, the module for a bicycle includes a module member in which a hole is formed, the hole having a first portion and a second portion. Further, the module includes a bushing and a pin, wherein the bushing is inserted into the first portion of the hole and the pin is inserted into the second portion of the hole. The first portion and the second portion are arranged next to each other, so that the inserted bushing and the inserted pin are also next to each other. The inserted bushing and the inserted pin interact with each other, wherein the module is configured such that due to this interaction the bushing is held in the hole and is secured against falling out of the hole.The present invention is based, inter alia, on the finding that bushes are usually pressed directly into bores of a module element, for example with a transition fit or press fit. Hand-assemblability is usually not possible; presses must be used instead. For this, expensive registration systems must be made. In the event of a transition fit, the bushing can be lost during transport. If the bushing is too tight, an undesired loading of the module element and / or of a carrier on which the module is mounted may occur.With the present invention, the bushing is held in the hole by a pin disposed adjacent to the bushing. The bushing and pin can be inserted, for example, without tools into the hole of the module element.The module is, for example, part of a drive system, in particular an electric drive system, for a bicycle. The bicycle can be in particular a pedelec.The module further comprises, for example, an electric motor and / or a transmission with one or more gearwheels. For example, the module is configured to be coupled to a pedal crank shaft of the bicycle. The module can have a receiving region for a pedal crankshaft, for example a further hole for passing through the pedal crankshaft.The module element is, for example, a housing element or housing of the module. For example, the module element is made of plastic or metal, such as aluminum. The module element can be formed in one piece.The bushing and / or the pin are formed from metal, for example. The bushing, also referred to as a sleeve, is a hollow cylinder. On the inner wall of the hollow cylinder, the bushing can have a thread in order to enable a screw to be screwed into the bushing for the mounting of the module.The hole is a continuous hole. That is, the two sections are not separated from each other by solid material, but merge into each other. The hole can be one or more bores in the module element. For example, the first section is formed by a bore and the second section arranged next to it is formed by a second bore. The hole can be passed completely through the module element, i.e. form an aperture through the module element. The hole then has two mutually opposite openings. Alternatively, the hole can be a blind hole with only one opening and a base opposite the opening, which is formed, for example, by the module element.The two sections are adjacent to each other. That is, in a plan view of an opening of the hole, the two sections are arranged next to one another. Consequently, the inserted bushing and the inserted pin are also arranged side by side in plan view of the opening of the hole. For example, central axes of the inserted bushing and the inserted pin are offset from each other. The central axes can extend parallel to one another.The interaction between the inserted bushing and the inserted pin can be a mechanical and / or electromagnetic interaction. A force is thus transmitted to the bushing by the pin, which leads to the bushing being held in the hole. The force transmitted by the pin to the bushing may point toward or away from the pin. The bushing can be clamped or tilted in the hole by the force exerted on it, so that the bushing is held in the hole by positive locking. Alternatively, the bushing can be held in the hole exclusively by frictional engagement, i.e. friction, by the force exerted on the bushing.The bushing is secured against falling out of the hole due to the interaction. That is, the interaction with the pin is mainly or exclusively responsible for the bushing being held in the hole and being secured against falling out. That the bushing is secured against dropping out means that the gravitational force m B · g, where m B is the mass of the bushing and g is the gravitational constant, is not sufficient to pull the bushing out of the hole. In other words, a holding force with which the bushing is held in the hole is greater than m B · g, for example greater than 5 · m B · g.For example, the module is configured such that without the pin inserted into the second portion, the bushing would fall out of the hole, i.e. when the gravitational force m B · g acts on the bushing. Without the pin, a holding force holding the bushing in the hole is therefore less than m B · g.The interaction that results in the bushing being held in the hole and being secured against dropping out may also be mainly or exclusively responsible for the pin being held in the hole and being secured against dropping out. The foregoing for the bushing thus applies correspondingly also to the pin. The pin and the bushing thus hold each other in the hole, for example, and secure each other against falling out.Instead of a coherent hole described here with a first and a second section, two holes arranged next to one another and separated from one another can also be formed in the module element. The holes are separated from one another, for example, by a wall of the module element. The first portion into which the socket is inserted is then formed by a first of these holes and the second portion into which the pin is inserted is then formed by a second of these holes. Also in this case, the pin and the socket may interact with each other, for example magnetically through the wall, in order to hold the socket in the first hole and to secure it against falling out. It is also possible that, if the wall between the two holes is designed to be flexible, the bushing is held in the first hole and is secured against falling out by a purely mechanical interaction between pin and bushing. All features disclosed here and in the following regarding the embodiment with a continuous hole with two sections correspondingly also apply to the embodiment with two separate holes for the bushing and the pin.According to at least one embodiment, the module is configured such that the bushing is displaceable in the axial direction, parallel to a central axis of the bushing, relative to the module element and / or to the pin. By this is meant that the bushing held in the hole due to the interaction with the pin can be axially displaced without damage or destruction of any components of the module. The central axis of the bushing is in particular an axis along which a screw can be screwed into the bushing, that is to say in particular the cylinder axis belonging to the bushing.For example, the bushing is held in the hole solely by frictional force, i.e. solely by frictional engagement, and is secured against falling out. By overcoming the holding force, i.e. the static friction force, the bushing can be displaced in the axial direction relative to the module element, even completely pulled out of the hole.According to at least one embodiment, the module is configured such that a rotation of the bushing about its central axis is blocked relative to the module element and / or relative to the pin. For example, the bushing can be rotated relative to the module element and / or to the bushing at most by a small angle, for example at most ±5°. Any forced rotation beyond this leads, for example, to the destruction or damage of a component of the module. In particular, the rotation of the bushing can be blocked by form locking with another component of the module, for example the pin or the module element.The axially displaceable but non-rotatable bushing is secured against falling out during transport. When mounting the module, for example on a bicycle part, a screw is, for example, screwed into the bushing. The blockage of the rotation of the bushing ensures that the screw engages. The axial displaceability of the bushing at the same time leads to excessive axial loads on the module or the bicycle part being avoided when the screw is tightened.According to at least one embodiment, the pin presses the bushing against an inner wall delimiting the first portion of the hole. This holds the bushing in the hole. The static friction force between the bushing and the inner wall caused by the pressure is, for example, so great that the falling out is prevented. The inner wall of the hole in the first portion is formed by the module element, for example. The pin can press directly against the bushing, i.e. bear against the bushing. The bushing can be pressed directly against the inner wall, i.e. bear against the inner wall.The force transmitted from the pin to the bushing acts in particular in the radial direction, for example exclusively in the radial direction, with respect to the central axis of the bushing. For example, a contact point or a contact line in which the pin abuts the socket lies on a connecting straight line or plane between the central axes of the socket and the pin.According to at least one embodiment, the pin is a clamping pin. The clamping pin is, for example, radially prestressed with respect to its central axis, so that the clamping pin presses radially outwards against the bushing.The clamping pin is in particular a slotted pin. For example, the clamping pin is a hollow cylinder, with a slot in the lateral surface. The slot extends parallel to the cylinder axis / central axis of the pin.Alternatively, the pin could also comprise or consist of a material compressed in the radial direction and be radially prestressed by the compression. Also then the pin would press outwards.According to at least one embodiment, the pin and the bushing engage in one another, i.e. are in form-fit. This interlocking blocks, for example, a rotation of the bushing about its center axis relative to the module element and / or pin.According to at least one embodiment, the bushing has a notch in which the pin engages. Alternatively, however, the pin could also have a notch in which the bushing engages. In the region of the notch, the pin and the bushing are in direct contact with one another, for example.The notch is, for example, elongated and extends in the axial direction, i.e., parallel to the center axis of the bushing or pin. The notch can be a groove. By engaging an elongated axially extending notch, a relative axial movement between the pin and the bushing can be ensured and at the same time a relative rotation can be blocked.According to at least one embodiment, the pin is formed cylindrically. For example, the pin is hollow cylindrical.According to at least one embodiment, the notch is formed in the lateral surface of the bushing.According to at least one embodiment, the notch has the shape of a cylinder segment. In other words, a surface of the bushing (or of the pin, respectively, which delimits the notch, if the notch is formed in the pin) is the lateral surface of a cylinder segment. The cylinder segment is, for example, less than one half cylinder. For example, the surface delimiting the notch extends around the associated respective cylinder axis of the cylinder segment by at most 150° and / or by at least 70°.According to at least one embodiment, the shape of the notch is adapted to the shape of the pin, so that the pin engages in the notch in a positive-locking manner. For example, the cylinder radius of the cylinder segment associated with the notch is matched to the cylinder radius of the pin. For example, the cylinder radius of the cylinder segment is greater than the cylinder radius of the pin. The cylinder segment and the cylindrical pin may be coaxial with each other.According to at least one embodiment, the first and the second section of the hole are each bounded by an inner wall having the shape of a lateral surface of a cylinder segment. The inner wall is formed, for example, by the module element. In the following, the cylinder segment whose lateral surface corresponds to the shape of the inner wall in the region of the first section is referred to as the cylinder segment of the first section. Accordingly, the cylinder segment whose lateral surface corresponds to the shape of the inner wall in the region of the second section is referred to as the cylinder segment of the second section.According to at least one embodiment, the cylinder segments of the first and second sections are each larger than a half cylinder. This means that the inner wall to the respective section extends around the respective cylinder axis by more than 180°, for example by at least 210° and / or by at most 320°.According to at least one embodiment, the distance of the cylinder axes of the cylinder segments of the first and second section is smaller than the sum of the cylinder radii of the two cylinder segments and larger than each individual cylinder radius of the two cylinder segments.The hole can thus have the shape of two overlapping cylinders with cylinder axes running parallel. In a plan view of the opening to the hole, the opening is bounded by a contour which then has the shape of two overlapping circles, in particular the shape of an eight.The central axes of the bushing and the pin may be parallel to the cylinder axes of the first and second portions. Due to the interaction between the pin and the bushing, the central axis of the bushing is offset with respect to the cylinder axis of the first section, for example. Alternatively or additionally, the central axis of the pin can also be offset with respect to the cylinder axis of the second section.According to at least one embodiment, the cylinder radius of the cylinder segment of the first section is greater than the cylinder radius of the cylinder segment of the second section. For example, the cylinder radius of the first portion is at least 1.2 times or at least 1.5 times as large as that of the second portion.In the above-mentioned case of two separate holes, one for the bushing and one for the pin, the two holes are each cylindrical, for example, i.e. each have the shape of a full cylinder. The same applies to the relative magnitudes of the cylinder radii of these solid cylinders as to the relative magnitudes of the cylinder radii of the cylinder segments.According to at least one embodiment, the radius of the bushing is greater than the radius of the pin. For example, the radius of the bushing is at least 1.2 times or at least 1.5 times the radius of the pin.According to at least one embodiment, the module element is a housing for a drive system of the bicycle. The module is, for example, part of the drive system. For example, the module includes a drive device for the drive system. The module may comprise an electric motor and / or a transmission of the drive system. The electric motor and / or the transmission are, for example, surrounded by the housing or arranged in the interior of the housing.According to at least one embodiment, the bushing and the first portion of the hole are clearance-fitted to each other. In particular, the inner wall delimiting the first section of the hole and the inserted bushing are spaced apart from one another in regions. For example, the cylinder radius of the cylinder segment of the first section is greater, for example at least 1 mm or at least 2 mm greater, than the radius of the bushing.According to at least one embodiment, the pin and the second portion of the hole are clearance-fitted to each other. In particular, the inner wall delimiting the second section of the hole and the inserted pin are spaced apart from one another in regions. For example, the cylinder radius of the cylinder segment of the second section is larger, for example at least 1 mm or at least 2 mm larger, than the radius of the pin.The module may comprise a plurality of pairs each having a bushing and a pin. Each pair is then assigned its own hole in the module element with first and second sections or its own hole pair with first and second holes. All features disclosed in connection with the one pair of bushing and pin described herein are also disclosed for all further pairs of bushing and pin.Next, the kit for a bicycle will be specified. The kit can be assembled in particular to form a module described here. All features disclosed in connection with the module are therefore also disclosed for the kit and vice versa.According to at least one embodiment, the kit comprises a modular element with a hole, wherein the hole has a first and a second section. The kit further comprises a bushing and a pin. The hole, the bushing and the pin are matched to one another in such a way that the bushing can be inserted into the first section of the hole, the pin can be inserted into the second section of the hole, and the inserted pin and the inserted bushing then interact with one another in such a way that the bushing is held in the hole and is secured against dropping out of the hole.The kit differs from the module in that the pin and / or the bushing are not yet inserted into the hole. The pin and the bushing can thus be handled separately from one another and separately from the module element.Next, the method of assembling a module will be given. In particular, the method can be used to assemble a module according to one of the embodiments described here. All features disclosed in connection with the module are therefore also disclosed for the method and vice versa.In at least one embodiment of the method for assembling a module, said method comprises a step in which a kit is provided. The kit is a kit described here with a modular element, a bushing and a pin. In one step, the bushing is inserted into the first section of the hole of the module element. In a further step, the pin is inserted into the second section of the hole. The inserted bushing and the inserted pin interact with each other, and due to the interaction, the bushing is held in the hole and a subsequent dropping of the bushing from the hole is prevented.For example, the pin is first inserted and then the bushing inserted. When inserting the bushing, the already inserted pin can be radially biased and consequently press radially outwards against the bushing and thereby press the bushing against an inner wall of the hole.Alternatively, the bushing is inserted first and then the pin is inserted. For example, then, upon insertion of the pin, the pin is radially biased due to the interaction with the bushing and consequently presses radially outwards against the bushing, so that the bushing is pressed against the inner wall of the hole.The socket and / or the pin are inserted into the first or second section, for example. That is, rotation about its respective central axis is not required during insertion.Next, the method of assembling a module will be given.In at least one embodiment of the method for assembling a module, a module according to any of the embodiments described herein is used and a connecting element is inserted into a bicycle part for a bicycle and into the bushing to connect the module to the bicycle part.For example, the bicycle part has a hole into which the connecting element is guided or through which the connecting element is guided. The hole may be an aperture through the bicycle part. For example, the connecting element is first guided through the hole in the bicycle part and then into the bushing.According to at least one embodiment, the connecting element is a screw. The bushing then has an internal thread which is brought into engagement with the external thread of the screw when the screw is introduced.According to at least one embodiment, when screwing the screw into the bushing, the bushing is axially displaced relative to the module element. For example, when the screw is screwed in, the bushing shifts toward the bicycle part. Due to the axial displaceability of the bushing, bracing of the module element and / or of the bicycle part can be avoided. The rotational blockage of the bushing also ensures that the bushing does not rotate together when the screw is screwed in, and the screw can thus be screwed into the bushing.The bicycle part may be a frame or frame portion of the bicycle, for example, a down tube or seat tube of the frame. For example, the module is mounted in the frame, i.e. in the interior of the pipe.Next, the bicycle will be specified. For assembling the bicycle, the module is mounted on a bicycle part of the bicycle, wherein the above-mentioned method can be used. All features disclosed in connection with the method for mounting a module are therefore also disclosed for the bicycle and vice versa.In at least one embodiment, bicycle includes a module and a frame described herein. The module is connected to the frame by a screw screwed into the bushing. For example, the module is arranged in the frame. For example, the module is bolted to or within the seat tube or down tube of the bicycle. A wall of the frame is then positioned, for example, between the screw head and the bushing.The bicycle is, for example, an electric bicycle, in particular a pedelec.A module described here, a kit described here, a bicycle described here and a method described here for assembling or mounting a module are explained in more detail below with reference to drawings on the basis of exemplary embodiments. Identical reference numerals indicate identical elements in the individual figures. Insofar as elements or components in the various figures correspond in function, their description is not repeated for each of the following figures. For reasons of clarity, elements may not be provided with corresponding reference numerals in all figures.The following are shown: FIG. 1 shows an exemplary embodiment of an electric bicycle, FIG. 2 shows an exemplary embodiment of the module in plan view, FIGS. 3 and 4 show detailed views of the exemplary embodiment of FIG. 2, FIG. 5 shows an exemplary embodiment of the kit in a perspective view during assembly to form a module, FIG. 6 shows a further position during assembly to form a module, FIG. 7 shows a position in an exemplary embodiment of the method for mounting a module, and FIG. 8 shows an exemplary embodiment of the completely assembled module.FIG. 1 schematically shows an electric bicycle 100 with a bicycle frame 2 which has, among other things, a lower frame portion 21 which forms a down tube. The frame portion 21 extends in the direction of a pedal bearing which comprises a pedal crankshaft 22 which is coupled or can be coupled to a drive device for the electric bicycle. The drive device comprises, for example, a transmission and / or an electric motor. The drive device is here part of a separately provided module 100 which is installed in the frame 2, for example is screwed inside the down tube 21 (see also FIG. 8 ).FIG. 2 shows an exemplary embodiment of the module 100 in a plan view. This can be the module 100 of FIG. 1. The module 100 comprises a module element 1 in the form of a housing 1. the housing 1 is made, for example, of metal, such as aluminum. The transmission and / or the electric motor are arranged, for example, in the interior of the housing 1. The housing 1 comprises a receptacle 13 for a pedal crankshaft 22, the pedal crankshaft 22 being able to be inserted through the receptacle 13, for example.A socket 3 and a pin 4 are inserted into the housing 1 at different points. This is illustrated in more detail in conjunction with FIG. 3 in a more detailed plan view and in conjunction with FIG. 4 in a detailed sectional view. The sectional view of FIG. 4 is a section through the central axes A 3, A 4 of the bushing 3 and of the pin 4.It can be seen in FIG. 3 that a hole is formed in the housing 1, which hole comprises a first section 11 and a second section 12. Both the first 11 and the second 12 section each have the shape of a cylinder segment or, in the top view shown, the shape of a circle segment. The virtual boundary between the first section 11 and the second section 12 is shown as a dashed line.The hole 10 with the two cylinder segment-shaped sections 11, 12 can be produced, for example, by drilling. For this purpose, a first hole is first drilled and then a second hole is drilled overlapping the first hole.The bushing 3 is inserted into the first portion 11 of the hole 10. The cylindrical pin 4 is inserted into the second section 12. The bushing 3 and the associated section 11 are a clearance fit. That is, the radius R 3 of the sleeve 3 is smaller than the radius R 11 of the cylinder segment associated with the first portion 11. Likewise, the pin 4 and the second section 12 are clearance-fit and, accordingly, the radius R 4 of the pin 4 is smaller than the radius R 12 of the cylinder segment associated with the second section 12.As can be seen, the distance D of the substantially parallel central axes A 3, A 4 of the bushing 3 and of the pin 4 or the distance D between the cylinder axes of the cylinder segments is smaller than the sum of the radii R 3 and R 4 or smaller than the sum of the radii R 11 and R 12 but larger than each of the radii R 3 and R 4 or than each of the radii R 11 and R 12. This is achieved, among other things, by the fact that a notch 30 is provided in the lateral surface of the bushing 3, which likewise has the shape of a cylinder segment or, in the top view shown, a segment of a circle. While the cylinder segments giving the sections 11, 12 their shape are each larger than a half cylinder, the cylinder segment giving the notch 30 their shape is smaller than a half cylinder. The notch 30 is adapted to the shape of the pin 4 so that the pin 4 engages in the notch 30 in a positive-locking manner. The cylinder axis of the cylinder segment of the notch is coaxial with the central axis A 4, for example. By engaging pin 4 and bushing 3 in one another, a rotation of bushing 3 about its center axis A 3 relative to pin 4 and relative to housing 1 is blocked.The pin 4 is in the present case a clamping pin in the form of a hollow cylinder with a slot 40. the slot 40 extends predominantly axially in the direction parallel to the central axis A 4 of the pin 4. the clamping pin 4 is prestressed radially, so that it presses radially outwards onto the bushing 3 in the region of the notch 30, i.e. presses the bushing away from it. The bushing 3 is thereby pressed against the inner wall of the housing 1 delimiting the hole 10 on the side diagonally opposite the clamping pin 4. The forces with which the pin 4 is pressed against the bushing 3 and the bushing 3 against the housing 1 result in a static friction force for an axial movement of the bushing 3 parallel to the central axis A 3, which is so great that a falling out of the bushing 3 from the hole 10 is prevented. The pin 4 likewise presses against an inner wall of the housing 1 delimiting the second section 12 of the hole 10.In the exemplary embodiment shown, the bushing 3 and / or the pin 4 are held in the hole 10 only by frictional engagement, that is to say solely by frictional force. Consequently, by overcoming the static frictional force, the bushing 3 and / or the pin 4 can be displaced axially, that is to say in the direction parallel to the respective central axis A 3, A 4. This is advantageous when mounting the module 100 (see also description relating to FIGS. 7 and 8 ).It should be noted that the use of a clamping pin 4 to retain the bushing 3 in the hole 10 is just one example. Likewise, the bushing 3 could be formed as a clamping pin and be radially prestressed in such a way that it presses radially outwards against the pin 4. Alternatively, it would also be conceivable for the bushing 3 and the pin 4 to be magnetic and, for example, to repel one another, and thus to be pressed in each case against the inner walls delimiting the hole 10. Finally, different types of interactions between the pin 4 and the socket 3 may result in the socket 3 and / or the pin 4 being held in the hole 10 and being secured against falling out.FIG. 5 shows an embodiment of the kit. The kit comprises a module element 1 in the form of a housing 1, a plurality of bushings 3 and a plurality of clamping pins 4. the bushings 3 and the clamping pins 4 have not yet been inserted into the holes 10 provided for this purpose, each having the two sections 11, 12. The kit of FIG. 5 can be assembled into the module 100 of the preceding figures.In FIG. 6, a position during assembly of the module 100 is shown. A bushing 3 and a clamping pin 4 are already inserted into each of the three holes 10. In a third hole 10, a clamping pin 4 is inserted into the second portion 12 of the hole. FIG. 6 shows the position while the bushing 3 is being inserted into the third hole 10 or its first section 11. During insertion, the clamping pin 4 is radially compressed, i.e. biased, by the bushing 3, so that as a consequence a force directed radially outwards with respect to the central axis A 4 acts on the bushing 3, which force presses the bushing 3 against the inner wall of the hole 10.FIG. 7 shows a sectional illustration during the mounting of the module 100 on a bicycle part 2, in the present case the frame 2 of the bicycle. More specifically, the module 100 is mounted inside the tubular lower frame portion 21 of the frame 2. In FIG. 7, the module 100 is already pre-assembled, namely with screws 5 which are guided from the outside through the wall of the frame 2, 21 and are screwed into the module 100 (see left side in FIG. 7 ). In the right side of the module 100, the sockets 3 held by the clamp pins 4 are provided. The bushes 3 are sleeves which have an internal thread. Connecting elements 5 in the form of screws 5 can then be screwed through holes 23 in the frame 2 through the holes 23 into the sockets 3 in order finally to mount or fasten the module 100 to the frame.This is illustrated in FIG. 8. There is shown a position after the screws 5 have been fully screwed into the bushes 3. Since the bushes 3 are secured against rotation, they do not rotate when the screws 5 are screwed in. When tightening the screw 5, as can be seen in the comparison of Figures 7 and 8, the bushes 3 are pulled axially along their respective central axis A3 out of the hole 10 in the housing 1 and then abut, for example, against the frame 2. Due to this axial displaceability of the bushings 3, the frame 2 and the housing 1 are axially relieved when the screws 5 are tightened. Without the displaceability, a (stronger) axial bracing of the frame 2 or of the housing 1 would occur when the screws are tightened.List of reference characters1 Module element 2 bicycle part / frame 3 bushing 4 pin 5 connecting element / screw 10 hole 11 first portion of hole 10 12 second portion of hole 10 13 receiving for a pedal crank shaft 21 lower frame portion 22 pedal crank shaft 23 hole 30 notch 40 slot 100 module 1000 bicycle A3 center axis of bushing 3 A4 center axis of pin 4 R3 radius of bushing 3 R4 radius of pin 4 D distance between center axes A3 and A4 R11 radius of first portion 11 of hole 10 R12 radius of second portion 12 of hole 10

Claims

Module (100) for a bicycle comprising - a module element (1) in which a hole (10) is formed, wherein the hole (10) comprises a first portion (11) and a second portion (12), - a bushing (3) inserted into the first portion (11) of the hole (10), - a pin (4) inserted into the second portion (12) of the hole (10), wherein - the first portion (11) and the second portion (12) are arranged next to each other such that the inserted bushing (3) and the inserted pin (4) are also next to each other, - the inserted bushing (3) and the inserted pin (4) interact with each other, and - the module (100) is configured such that, due to this interaction, the bushing (3) is held in the hole (10) and is secured against falling out of the hole (10).Module (100) according to claim 1, wherein the module (100) is configured such that - the bushing (3) is displaceable relative to the first module element (1) in the axial direction, parallel to a central axis (A3) of the bushing (3), - a rotation of the bushing (3) about its central axis (A3) and relative to the module element (1) is blocked.Module (100) according to claim 1 or 2, wherein - the pin (4) presses the bushing (3) against an inner wall delimiting the first portion (11) of the hole (10), whereby the bushing (3) is held in the hole (10).Module (100) according to any one of the preceding claims, wherein - the pin (4) is a clamping pin which, with respect to its central axis (A4), is radially biased so as to press radially outwards against the bushing (3).Module (100) according to any one of the preceding claims, wherein - the bushing (3) and the pin (4) are engaged, thereby blocking rotation of the bushing (3) about its central axis (A3).Module (100) according to claim 5, wherein - the bushing (3) comprises a notch (30) in which the pin (4) engages.Module (100) according to claim 6, wherein - the pin (4) is cylindrical, - the notch (30) is formed in the lateral surface of the bushing (3), - the notch (30) has the shape of a cylindrical segment, and - the shape of the notch (30) is adapted to the shape of the pin (4) so that the pin (4) engages in the notch (30) in a positive-locking manner.Module (100) according to one of the preceding claims, wherein - the first (11) and the second (12) sections are each bounded by an inner wall having the shape of a lateral surface of a cylinder segment, - the cylinder segments are each larger than a half cylinder, - the distance (D) between the cylinder axes of the cylinder segments is smaller than the sum of the cylinder radii (R11, R12) of the two cylinder segments and larger than each individual cylinder radius (R11, R12) of the two cylinder segments.Module (100) according to any one of the preceding claims, wherein - the module element (1) is a housing for a drive system of the bicycle.Module (100) according to any one of the preceding claims, wherein - the bushing (3) and the first portion (11) of the hole (10) are clearance-fitted to each other, - the pin (4) and the second portion (12) of the hole (10) are clearance-fitted to each other.Kit for a bicycle, comprising - a modular element (1) with a hole (10), wherein the hole (10) has a first (11) and a second portion (12), - a bushing (3), - a pin (4), wherein - the hole (10), the bushing (3) and the pin (4) are matched to one another in such a way that - the bushing (3) can be introduced into the first portion (11) of the hole (10), - the pin (4) can be introduced into the second portion (12) of the hole (10), - the introduced pin (4) and the introduced bushing (3) then interact with one another in such a way that the bushing (3) is held in the hole (10) and is secured against falling out of the hole (10).Method for assembling a module (100) comprising: - providing the kit according to claim 11, - inserting the bushing (3) into the first portion (11) of the hole (10) of the module element (1), - inserting the pin (4) into the second portion (12) of the hole (10) of the module element (1), wherein - the inserted bushing (3) and the inserted pin (4) interact with each other and due to the interaction the bushing (3) is held in the hole (10) and a subsequent dropping out of the bushing (3) from the hole (10) is prevented.Method for assembling a module (100) according to any of claims 1 to 10, comprising the step of: - inserting a connecting element (5) into a bicycle part (2) for a bicycle and into the bushing (3) to connect the module (100) to the bicycle part (2).Method according to claim 13, wherein - the connecting element (5) is a screw, - the bushing (3) has an internal thread which is brought into engagement with the thread of the screw (5), - when the screw (5) is screwed into the bushing (3), the bushing (3) is displaced axially relative to the module element (1).Bicycle (1000) comprising - a module (100) according to any one of claims 1 to 10, - a frame (2), wherein - the module (100) is connected to the frame (2) via a screw (5) screwed into the bushing (3).

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