Bicycle and method for operating a bicycle

Abstract

The invention relates to a bicycle (100) with a front wheel (103) and a rear wheel (102), wherein the front wheel (103) is mounted on a frame (104) of the bicycle (100) at least via a handlebar assembly (1) and is pivotable about a steering axis, wherein means for detecting reaction forces resulting from contact between the front wheel (103) and a roadway during travel are arranged on the handlebar assembly (1), wherein a data processing unit (2) is connected to the means for detecting reaction forces on the handlebar assembly (1) in a signal-transmitting manner and is configured to determine the start of a flight phase of the front wheel (103) and to adjust at least one device on the bicycle (100) connected thereto in a signal-transmitting manner when a first threshold value for the reaction forces on the handlebar assembly (1) is undershot. The invention further relates to a method for operating a bicycle.

Description

[0001] The invention relates to a bicycle with a data processing unit, a front wheel, and a rear wheel. Furthermore, the invention relates to a method for operating such a bicycle.

[0002] For example, DE 10 2019 218 865 A1 discloses a two-wheeler and a method for determining a compression speed of a shock absorber of the two-wheeler with a drive motor, wherein the shock absorber is arranged between a two-wheeler frame and a rear wheel suspension of the two-wheeler. According to the method described therein, an angular velocity of the rear wheel of the two-wheeler is first detected, followed by the detection of an engine speed of the drive motor, and the determination of the compression speed of the shock absorber as a function of the detected angular velocity and the detected engine speed. After the compression speed has been determined, a spring constant of the shock absorber of the two-wheeler is controlled as a function of the determined compression speed of the shock absorber.

[0003] The object of the present invention is to improve a bicycle and a method for operating a bicycle. In particular, safety and comfort during riding are to be increased. This object is achieved by a bicycle according to claims 1, 4, and 5, as well as by a method according to claims 9, 10, and 11. Embodiments are the subject of the dependent claims.

[0004] According to a first aspect of the invention, a bicycle according to the invention comprises at least one front wheel and at least one rear wheel, wherein the front wheel is received on a frame of the bicycle at least via a handlebar arrangement and is pivotable about a steering axis, wherein means for detecting reaction forces resulting from contact between the front wheel and a roadway during travel are arranged on the handlebar arrangement, wherein a data processing unit is connected to the means for detecting the reaction forces on the handlebar arrangement in a signal-transmitting manner and is configured to determine the start of a flight phase of the front wheel and to adjust at least one device on the bicycle which is connected to it in a signal-transmitting manner when a first threshold value for the reaction forces on the handlebar arrangement is undershot.The data processing unit therefore links the undershoot of the first threshold value for the reaction forces on the handlebar arrangement with the beginning of a flight phase of the front wheel.

[0005] A bicycle is a vehicle that can be used by at least one user, particularly a rider. A bicycle includes not only a classic bicycle without a motor that is propelled exclusively by muscle power, but also a bicycle with a motor. Bicycles are generally known that can be powered by an electric motor in addition to the user's drive power; such bicycles are also referred to as electric bicycles, pedelecs, or e-bikes. The drive power of the user or rider is usually supported by the electric motor in accordance with the rider's wishes and the torque supplied by the rider. The electric motor can be arranged as a mid-engine in the area of ​​the pedal crankshaft or as a wheel drive directly on the respective drive wheel. In particular, the term "bicycle" also includes cargo bikes with multiple wheels, especially three or four wheels.

[0006] The data processing unit functions as a control unit or control device and is designed to determine the beginning of a flight phase of the front wheel and to adjust the at least one device on the bicycle connected to it for signal transmission when a first threshold value for the reaction forces on the handlebar assembly is undershot. In other words, according to a first aspect of the invention, the data processing unit determines the beginning of the flight phase of the front wheel and adjusts the at least one device on the bicycle connected to it for signal transmission as soon as the first threshold value for the reaction forces on the handlebar assembly is undershot. To this end, the data processing unit processes signal data provided by the means for detecting the reaction forces on the handlebar assembly during travel.Only if the data processing unit determines, upon comparing the provided signal data, that the reaction forces on the handlebar assembly fall below the first threshold, will at least one signal-transmitting device on the bicycle be adjusted to prepare the bicycle for the end of the flight phase and the resulting collision with the roadway. This not only improves safety but also comfort for the cyclist.

[0007] In particular, the data processing unit and the means and devices connected thereto for signal transmission have signal interfaces for a signal-transmitting connection. A signal interface is a connection for exchanging data and signals between different components of the bicycle. The respective signal interface enables at least two components to communicate with each other. The respective signal interface is integrated into the respective component or is an integral part thereof and serves to receive and transmit signals. For example, the signal-transmitting connection can be wired, wireless, or optical. A signal-transmitting connection is a communicating connection in which data, in particular measurement data, and / or information is transmitted as a signal from a transmitter to a receiver. The signals can be, for example, switching, control, data transmission, or command signals.For example, the data processing unit can be a network of control units or control devices. For example, one of the control devices can be part of a device on the bicycle. The data processing unit can be arranged on the bicycle, in particular on the handlebars, in the area of ​​the drive motor, or at another location on the bicycle, preferably on the frame.

[0008] For example, the means for detecting the reaction forces on the handlebar assembly comprise a signal interface that is connected to a signal interface on the data processing unit for signal transmission. For example, the respective adjustable device on the bicycle comprises a signal interface that is connected to a signal interface on the data processing unit for signal transmission. In particular, the data processing unit receives data and information on reaction forces on the handlebar assembly at the signal interface and, after evaluating this data and information, controls the respective adjustable device on the bicycle via a control signal.

[0009] According to one embodiment, the handlebar assembly comprises a handlebar, with at least one sensor for detecting a force and / or torque being arranged on the handlebar. The forces and / or torques on the handlebar depend on the user's support on the handlebar and the support of the handlebar assembly via the front wheel on the road surface, with these forces and / or torques forming the reaction forces to be detected.

[0010] According to one embodiment, the handlebar assembly comprises two handlebar grips, with a sensor for detecting a force being arranged on at least one handlebar grip. Preferably, a sensor for detecting a force is arranged on each of the handlebar grips. The sensors in the handlebar grips can detect forces that depend on the user's support on the handlebar grips and the support of the handlebar assembly via the front wheel on the road surface. These forces constitute the reaction forces to be detected. In particular, the reaction forces on the handlebar assembly can fluctuate while riding.However, as soon as the front wheel no longer has contact with the road surface, i.e. with the ground, the forces and torques introduced by the user can no longer be supported on the handlebar assembly, in particular on the handlebar stem or on the handlebar grips, as a result of which essentially no or only very low reaction forces can be detected on the handlebar assembly, so that the reaction forces detected by the means for detecting the reaction forces on the handlebar assembly approach zero, in particular are canceled out and thus amount to zero.

[0011] For example, the first threshold value can be set by the data processing unit depending on the reaction forces on the handlebar assembly that are typical during travel and can optionally also be tracked. For example, the first threshold value is at least 0% and at most 75% of the reaction forces on the handlebar assembly that are typical during travel. The closer the first threshold value is to the reaction forces on the handlebar assembly that are typical during travel, the earlier the start of a flight phase can be detected. However, on uneven road surfaces and with large fluctuations in the reaction forces on the handlebar assembly, the start of the flight phase can be incorrectly determined. The closer the first threshold value is to a reaction force on the handlebar assembly that is zero, the more robustly, i.e. the less susceptible to interference, the determination of the start of the flight phase can be.Alternatively, the first threshold value is stored in a data storage device of the data processing unit and is independent of the reaction forces on the handlebar assembly that are typical during driving. For example, the first threshold value for the reaction force on the handlebar assembly is approximately zero.

[0012] According to a second aspect of the invention, a bicycle according to the invention comprises at least one front wheel and at least one rear wheel, wherein the front wheel is mounted on a frame of the bicycle at least via a handlebar arrangement and is pivotable about a steering axis, wherein means for detecting tire pressure during travel are arranged on at least one of the two wheels, wherein a data processing unit is connected to the means for detecting the tire pressure in a signal-transmitting manner and is configured to determine the start of a flight phase of at least one of the two wheels and to adjust at least one device on the bicycle connected thereto in a signal-transmitting manner when the tire pressure falls below a first threshold value. Thus, the data processing unit links the falling below the first threshold value for the tire pressure with the start of a flight phase of at least one of the two wheels.Tire pressure refers to the air pressure on the respective tire.

[0013] With regard to the bicycle and the data processing unit, reference is made to the relevant introductory statements under the first aspect of the invention. According to the second aspect of the invention, the data processing unit functions as a control unit or control device and is designed to determine the start of a flight phase of at least one of the two wheels and to adjust the at least one device on the bicycle connected to it by transmitting signals when a first threshold value for the tire pressure is undershot. In other words, according to a second aspect of the invention, the data processing unit determines the start of the flight phase of at least one of the two wheels and adjusts the at least one device on the bicycle connected to it by transmitting signals as soon as the tire pressure falls below the first threshold value.This is because tire pressures are reduced during a flight phase, especially during a jump, because there is no longer any reaction force acting on the tire between the wheel and the road. Tire pressures are therefore lower during a wheel's flight phase than during a phase in which the wheel is in contact with the road. During a jump, none of the bicycle's wheels are in contact with the road, so all wheels are in a flight phase.

[0014] During the ride, the data processing unit processes signal data provided by the tire pressure detection device. Only if the data processing unit determines, upon comparing the provided signal data, that the tire pressure on a particular wheel has fallen below the first threshold, is the at least one signal-transmitting device on the bicycle adjusted to prepare the bicycle for the end of the flight phase and the resulting collision with the roadway. This not only improves safety but also comfort for the cyclist.

[0015] In particular, the data processing unit and the means and devices connected thereto for signal transmission have signal interfaces for a signal-transmitting connection. For example, the means for detecting the tire pressure have a signal interface that is connected for signal transmission to a signal interface on the data processing unit. For example, the respective adjustable device on the bicycle has a signal interface that is connected for signal transmission to a signal interface on the data processing unit. In particular, the data processing unit receives data and information on the tire pressure on the respective wheel at the signal interface and, after evaluating this data and information, controls the respective adjustable device on the bicycle via a control signal.

[0016] According to one embodiment, at least one sensor for detecting the tire pressure is arranged on the front wheel and / or the rear wheel. In particular, the tire pressure can be detected via tire pressure sensors on the wheels, wherein the tire pressure depends, among other things, on the support of the respective wheel on the road surface. In particular, the respective tire pressure can fluctuate during the journey. However, as soon as the respective wheel no longer has contact with the road surface, i.e. the ground, the tire pressure on the respective wheel decreases, and this change is detected by the means for detecting the tire pressure. For example, the first threshold value can be set by the data processing unit as a function of the tire pressures usual during the journey and optionally also adjusted. Alternatively, the first threshold value is stored in a data memory of the data processing unit and is not dependent on the tire pressures usual during the journey.

[0017] According to a third aspect of the invention, a bicycle according to the invention comprises at least one front wheel and at least one rear wheel, wherein the front wheel is mounted on a frame of the bicycle at least via a handlebar arrangement and is pivotable about a steering axis, wherein means for detecting bearing reaction forces during travel are arranged on at least one bearing of the bicycle, wherein a data processing unit is connected to the means for detecting bearing reaction forces in a signal-transmitting manner and is configured to determine the start of a flight phase of at least one of the two wheels and to adjust at least one device on the bicycle connected thereto in a signal-transmitting manner when a first threshold value for the bearing reaction forces is undershot. Thus, the undershoot of the first threshold value for the bearing reaction forces is linked to the start of a flight phase of at least one of the two wheels.

[0018] With regard to the bicycle and the data processing unit, reference is made to the relevant introductory statements under the first aspect of the invention. According to the third aspect of the invention, the data processing unit functions as a control unit or control device and is designed to determine the start of a flight phase of at least one of the two wheels and to adjust the at least one device on the bicycle connected to it by transmitting signals when a first threshold value for the bearing reaction forces is undershot. In other words, according to a third aspect of the invention, the data processing unit determines the start of the flight phase of at least one of the two wheels and adjusts the at least one device on the bicycle connected to it by transmitting signals as soon as the first threshold value for the bearing reaction forces is undershot.To this end, the data processing unit processes signal data provided by the means for detecting bearing reaction forces during the ride. Only if the data processing unit determines, upon comparing the provided signal data, that the first threshold value for the bearing reaction forces is undershot at at least one bearing, is the at least one signal-transmitting device on the bicycle adjusted to prepare the bicycle for the end of the flight phase and the resulting collision with the roadway. This not only improves safety but also comfort for the cyclist.

[0019] In particular, the data processing unit and the means and devices connected thereto for signal transmission have signal interfaces for a signal-transmitting connection. For example, the means for detecting bearing reaction forces have a signal interface that is connected for signal transmission to a signal interface on the data processing unit. For example, the respective adjustable device on the bicycle has a signal interface that is connected for signal transmission to a signal interface on the data processing unit. In particular, the data processing unit receives data and information on the bearing reaction forces at the respective bearing at the signal interface and, after evaluating this data and information, controls the respective adjustable device on the bicycle via a control signal.

[0020] According to one embodiment, at least one sensor is arranged on a bearing of a bicycle pedal to detect bearing reaction forces resulting between the pedal and a user's foot or shoe, in particular a shoe sole. This is based on the fact that pedal forces during a flight phase, in particular during a jump with the bicycle, are only transmitted to the road surface in a reduced or no longer effective manner, thus no longer generating a reaction force between at least one wheel and the road surface. Thus, pedal forces are lower during a flight phase of at least one wheel than during a phase in which both wheels are in contact with the road surface.

[0021] According to one embodiment, at least one sensor is arranged on a bearing of a pedal crankshaft of the bicycle in order to detect bearing reaction forces resulting between the pedal crankshaft and the frame. This is based on the fact that bearing forces between the pedal crankshaft and the frame are only reduced or no longer transmitted to the road surface during a flight phase, in particular during a jump, thus no longer generating a reaction force between at least one wheel and the road surface. Bearing forces between the pedal crankshaft and the frame are therefore lower during a flight phase of at least one wheel than during a phase in which both wheels are in contact with the road surface.

[0022] According to one embodiment, at least one sensor is arranged on a bearing of a bicycle wheel axle to detect bearing reaction forces resulting between the wheel axle and the frame. This is based on the fact that bearing forces between the respective wheel axle and the frame are only reduced or no longer transmitted to the road during a flight phase, in particular during a jump with the bicycle, thus no longer generating a reaction force between at least one wheel and the road. Bearing forces between the wheel axle and the frame are therefore lower during a flight phase of at least one wheel than during a phase in which both wheels are in contact with the road.

[0023] In particular, the bearing reaction forces detected by the sensors at the respective bearing can fluctuate during travel. As soon as one or both wheels no longer have contact with the road surface, i.e., the ground, the bearing reaction forces at the respective bearing decrease, and this change is recorded by the means for detecting the bearing reaction forces. For example, the first threshold value can be set by the data processing unit depending on the bearing reaction forces typical during travel and optionally also tracked. Alternatively, the first threshold value for the bearing reaction forces is stored in a data storage device of the data processing unit and is not dependent on the bearing reaction forces typical during travel.

[0024] According to one embodiment, the data processing unit determines the end of the respective flight phase and adjusts the at least one device connected thereto in a signal-transmitting manner back, i.e. to the initial state that existed before the adjustment at the start of the flight phase, if a second threshold value for the reaction force on the linkage arrangement and / or for the tire pressure and / or for the bearing reaction forces is exceeded. In other words, the first threshold value for the reaction forces on the linkage arrangement must be undershot before the second threshold value for the reaction forces on the linkage arrangement is exceeded in order to determine not only the start but also the end of the flight phase. Accordingly, the first threshold value for the tire pressure must be undershot before the second threshold value for the tire pressure is exceeded in order to determine not only the start but also the end of the flight phase.Accordingly, the first threshold value for the bearing reaction forces must be undershot before the second threshold value for the bearing reaction forces is exceeded in order to determine not only the beginning but also the end of the flight phase. Alternatively, the second threshold value for adjusting the at least one device can be omitted, so that a re-adjustment of the at least one device then occurs, for example, after a certain time has elapsed. In particular, this time for re-adjusting the at least one device is configurable and can be stored in a data memory of the data processing unit.

[0025] Both the first and the second respective threshold value cause the data processing unit to send control signals to the at least one adjustable device of the bicycle in order to adjust it, wherein the at least one adjustable device is adjusted at the start of the flight phase such that the bicycle is prepared for a collision with the roadway, wherein furthermore the at least one adjustable device is adjusted at the end of the flight phase such that the bicycle again has the original settings that were set before the start of the flight phase.

[0026] The respective first threshold value can only be reached by decreasing reaction forces on the control arm assembly and / or by decreasing tire pressures and / or by decreasing bearing reaction forces. The respective second threshold value can only be reached if the respective first threshold value has previously been undercut. For example, the respective first threshold value can be smaller than the respective second threshold value. Alternatively, the respective first threshold value can be equal to the respective second threshold value. Alternatively, the respective first threshold value can be greater than the respective second threshold value.

[0027] According to one embodiment, the data processing unit determines a jump of the bicycle and adjusts the at least one device on the bicycle connected to it in a signal-transmitting manner accordingly if a threshold value for the duration of a flight phase is exceeded. In order to be able to detect the duration of a flight phase and thus a bicycle jump, both the first threshold value for the reaction forces on the handlebar assembly and / or for the tire pressure and / or for the bearing reaction forces, as well as the second threshold value for the reaction forces on the handlebar assembly and / or for the tire pressure and / or for the bearing reaction forces are required. During a jump, none of the bicycle's wheels are in contact with the road surface, so that all wheels are in a flight phase.A counter for the duration of the flight phase starts as soon as the first threshold value for the reaction forces on the handlebar assembly and / or for the tire pressure and / or for the bearing reaction forces is undershot. As soon as a threshold value for the duration of the flight phase is exceeded, the data processing unit detects the jump. If a jump is detected, the data processing unit can be used to make further settings on the bicycle's devices that are connected to it by means of signal transmission. In particular, the jump and the duration of the flight phase can be shown to the user on a display device. As soon as the second threshold value for the reaction forces on the handlebar assembly and / or for the tire pressure and / or for the bearing reaction forces is exceeded, the data processing unit detects the end of the jump.

[0028] According to one embodiment, the data processing unit determines a jump of the bicycle and adjusts the at least one device on the bicycle connected to it in a signal-transmitting manner accordingly if a threshold value for the height of the bicycle relative to the roadway is exceeded. For example, the height of the bicycle relative to the roadway can be determined by means provided for this purpose, in particular sensors on the bicycle. The flight phase begins as soon as the first threshold value for the reaction forces on the handlebar arrangement and / or for the tire pressure and / or for the bearing reaction forces is undershot. As soon as the threshold value for the height of the bicycle relative to the roadway is then exceeded, the jump is detected by the data processing unit. If a jump is detected, further adjustments to the devices on the bicycle connected to it in a signal-transmitting manner can be made using the data processing unit.In particular, the jump as well as the current and / or maximum jump height can be displayed to the user on a display device. As soon as the second threshold value for the reaction forces on the handlebar assembly and / or for the tire pressure and / or for the bearing reaction forces is exceeded, the data processing unit detects the end of the jump.

[0029] According to one embodiment, the data processing unit determines a jump of the bicycle and adjusts the at least one device on the bicycle connected to it by means of a signal-transmitting connection accordingly if a threshold value for a pitch angle of the bicycle is exceeded. The flight phase begins as soon as the first threshold value for the reaction forces on the handlebar arrangement and / or for the tire pressure and / or for the bearing reaction forces is undershot. As soon as the threshold value for the pitch angle of the bicycle is exceeded, the jump is detected by the data processing unit. If a jump is detected, further adjustments can be made to devices on the bicycle connected to it by means of a signal-transmitting connection using the data processing unit. In particular, the jump as well as a current and / or a critical pitch angle can be displayed to the user on a display device.As soon as the second threshold value for the reaction forces on the handlebar assembly and / or for the tire pressure and / or for the bearing reaction forces is exceeded, the data processing unit detects the end of the jump.

[0030] In particular, the respective threshold value is stored in a data memory of the data processing unit, wherein the data processing unit compares the data and information received by the data processing unit with the threshold values ​​stored on the data processing unit during the journey in order to determine whether one of the threshold values ​​has been reached, exceeded or fallen below.

[0031] In the following, embodiments of the invention are explained in more detail with reference to the drawings, wherein identical or similar elements are provided with the same reference numerals. Fig. 1 a highly simplified schematic representation of a bicycle according to the invention according to a first embodiment, Fig. 2 a highly simplified schematic representation of a bicycle according to the invention according to a second embodiment and Fig. 3 a highly simplified section of a schematically illustrated bicycle according to the invention according to a third embodiment.

[0032] In Fig. 1 shows a bicycle 100 according to the invention in a highly simplified manner according to a first embodiment. The bicycle 100 has a frame 104 on which a rear wheel 102 designed as a drive wheel, a front wheel 103 that is pivotable via a handlebar assembly 1, and a saddle 106 are arranged. The handlebar assembly 1 comprises a handlebar 3, handlebar grips 4, and a handlebar fork 5. During the ride, a user (not shown in detail) sits, for example, on the saddle 106 and supports themselves on the handlebar grips 4. The bicycle 100 also has a drive device 108 that is designed to propel the bicycle 100 using the user's muscular power. To this end, the user applies drive power to the drive train of the bicycle 100 via respective pedals 107, which are connected via respective pedal cranks to a pedal crankshaft 109 of the drive device 108.The drive power is transmitted to the drive wheel via a traction drive 101 with two sprockets and a chain. Thus, the bicycle 100 is designed as a classic, exclusively muscle-powered bicycle without a motor.

[0033] The bicycle 100 further comprises a data processing unit 2 and means for detecting reaction forces on the handlebar assembly 1 during travel. The reaction forces on the handlebar assembly result from contact between the front wheel 103 and the road surface. The data processing unit 2 is connected to the means for detecting the reaction forces on the handlebar assembly 1 in a signal-transmitting manner and is configured to determine the beginning of a flight phase of the front wheel 103 and to adjust at least one device on the bicycle 100 connected thereto in a signal-transmitting manner when a first threshold value for the reaction forces on the handlebar assembly 1 is undershot. The first threshold value is stored in a data memory (not shown in detail) of the data processing unit 2. For example, the device can comprise an adjustable spring, an adjustable damper, and / or an adjustable actuator.In the present case, the means for detecting the reaction forces on the handlebar arrangement 1 comprise a sensor (not shown in detail) for detecting a force and / or a torque on the handlebar stem 3 as well as a sensor (not shown in detail) for detecting a force on the respective handlebar grip 4. The data processing unit 2 therefore determines the start of a flight phase of the front wheel 103 and adjusts the respective device on the bicycle 100 connected thereto in a signal-transmitting manner as soon as the first threshold value for the reaction forces on the handlebar arrangement 1 is undershot, in order to adjust at least the front wheel 103 or possibly both wheels of the bicycle 100 for an impending collision with the roadway and thereby increase safety and comfort for the user.The respective device on the bicycle 100, which was adjusted by the data processing unit 2 at the beginning of the flight phase of the front wheel 103, is reset to its original state, i.e., the state that was set before the beginning of the flight phase of the front wheel 103, after a counter has expired, which is triggered by the beginning of the flight phase. Alternatively, the counter can be omitted, in which case the data processing unit 2 determines the end of the flight phase and resets the at least one device on the bicycle 100 connected to it by means of a signal transmission when a second threshold value for the reaction forces on the handlebar assembly 1 is exceeded.

[0034] Furthermore, the data processing unit 2, if configured to determine the end of the flight phase, can also determine a jump of the bicycle 100 and adjust the at least one device on the bicycle 100 connected thereto for signal transmission accordingly. To do so, a threshold value must be exceeded for the duration of a flight phase. Alternatively or additionally, the data processing unit 2 can determine a jump of the bicycle 100 and adjust the at least one device on the bicycle 100 connected thereto for signal transmission accordingly if a threshold value for a height of the bicycle 100 relative to the roadway is exceeded. The height of the bicycle 100 can be determined in particular by means of distance sensors, which are arranged, for example, on the frame 104 and oriented toward the roadway. For this purpose, the distance sensors preferably emit sound waves and / or radar waves. The use of a laser for distance measurement can also be advantageous.Alternatively or additionally, the data processing unit 2 can determine a jump of the bicycle 100 and adjust the at least one device on the bicycle 100 connected to it for signal transmission accordingly if a threshold value for a pitch angle of the bicycle 100 is exceeded. If a jump of the bicycle 100, i.e., a lifting of both wheels from the roadway, is detected, the data processing unit 2 can make more extensive adjustments to adjustable devices of the bicycle 100 depending on the duration of the jump, the height of the bicycle 100 relative to the roadway, and the pitch angle of the bicycle 100 in order to best prepare the bicycle for the collision with the roadway.

[0035] In Fig. 2 shows a bicycle 100 according to the invention in a highly simplified manner according to a second embodiment. The embodiment according to Fig. 2 essentially corresponds to the embodiment according to Fig. 1, to which reference is made. The differences between these two embodiments are explained below. According to Fig. 2, the bicycle 100 is designed as an e-bike and has an electric machine 105, which is designed as a drive motor and integrated into the drive device 108 of the bicycle 100. The drive device 108 of the bicycle 100 is configured to drive the bicycle 100 at least with the muscle power of a user (not shown here). To this end, the user sits, for example, on the saddle 106 while riding and introduces drive power into the drive train of the bicycle 100 via respective pedals 107, which are connected to the pedal crankshaft 109 of the drive device via respective pedal cranks. The electric machine 105 is arranged here as a mid-engine in the region of the pedal crankshaft 109 and, depending on the user's requirements, can in turn also introduce drive power into the drive train of the bicycle 100 to assist the user while riding.To generate the drive power, the electric machine 105 draws electrical energy from an energy storage device (not shown here) that can be arranged on the frame 104. Otherwise, the embodiment corresponds to FIG. Fig. 2 the embodiment according to Fig. 1 to which reference is made.

[0036] Fig. Figure 3 shows a third embodiment of the bicycle 100 according to a highly schematic section. This section of the bicycle 100 is to be understood as a schematic diagram. The bicycle 100 has, as in the embodiment according to Fig. 1, means for detecting reaction forces resulting from contact between the front wheel 103 and the roadway while riding are provided on the handlebar assembly 1. In the present case, a sensor S4 is arranged on the handlebar stem 3 of the handlebar assembly 1, and a sensor S5 is arranged on each handlebar grip 4 of the handlebar assembly 1. The sensors S4, S5 on the handlebar assembly 1 are designed as force sensors and are thus configured to detect forces on the handlebar assembly 1. These means for detecting reaction forces on the handlebar assembly 1 are connected to the data processing unit 2 in a signal-transmitting manner. The data processing unit 2 determines the beginning of a flight phase of the front wheel 103 and adjusts at least one device on the bicycle 100 connected to it in a signal-transmitting manner as soon as a first threshold value for the reaction forces on the handlebar assembly 1 is undershot.

[0037] Furthermore, the bicycle 100 has means for detecting tire pressure on the front wheel 103 and the rear wheel 102, wherein the means for detecting the tire pressure on the wheels are connected to the data processing unit 2 in a signal-transmitting manner. In the present case, an air pressure sensor S6 is arranged for detecting tire pressure on the front wheel 103, and an air pressure sensor S7 is arranged for detecting tire pressure on the rear wheel 102. The data processing unit 2 determines the start of a flight phase of one of the two wheels and adjusts at least one device on the bicycle 100 connected to it in a signal-transmitting manner as soon as a first threshold value for the tire pressure of at least one of the wheels is undershot.

[0038] Furthermore, the bicycle 100 has means for detecting bearing reaction forces at a plurality of bearings L1, L2, L3 of the bicycle 100, wherein the means for detecting the bearing reaction forces at the respective bearing L1, L2, L3 are connected to the data processing unit 2 in a signal-transmitting manner. In the present case, a respective sensor S3, designed as a force sensor, is arranged on a bearing L1 of a respective pedal 107 of the bicycle 100 in order to detect bearing reaction forces resulting between the respective pedal 107 and the user's respective foot. Furthermore, a sensor S2, designed as a force sensor, is arranged on a bearing L2 of a pedal crankshaft 109 of the bicycle 100 in order to detect bearing reaction forces resulting between the pedal crankshaft 109 and the frame.Furthermore, a respective sensor S3, designed as a force sensor, is arranged on a respective bearing L3 of a respective wheel axle 110 of the bicycle 100 in order to detect bearing reaction forces resulting between the respective wheel axle 110 and the frame. The data processing unit 2 determines the beginning of a flight phase of one of the two wheels and adjusts the at least one device on the bicycle 100 connected to it in a signal-transmitting manner as soon as a first threshold value for the bearing reaction forces is undershot. For example, the first threshold value for the bearing reaction forces can be selected such that only some or all of the bearing reaction forces are taken into account.

[0039] The respective device on the bicycle 100, which was adjusted by the data processing unit 2 at the start of the flight phase of at least one wheel, is reset to its original state, i.e., the state that was set before the start of the flight phase of the respective wheel, after a counter has expired, which is triggered by the start of the flight phase. Alternatively, the counter can be omitted, in which case the data processing unit 2 determines the end of the flight phase and resets the at least one device on the bicycle 100 connected thereto by means of a signal transmission, when a second threshold value for the reaction forces on the handlebar assembly 1 or for the tire pressure or for the bearing reaction forces is exceeded. Otherwise, the exemplary embodiment according to Fig. 3 the embodiment according to Fig. 1 to which reference is made. Reference symbol 1 handlebar arrangement 2 Data processing unit 3 handlebar 4 handlebar grips 5 handlebar fork S1 Sensor S2 Sensor S3 Sensor S4 Sensor S5 Sensor S6 air pressure sensor S7 air pressure sensor L1 bearing L2 bearing L3 bearing 100 bicycles 101 traction drive 102 rear wheel 103 front wheel 104 frames 105 electric machine 106 Saddle 107 pedals 108 Drive device 109 Pedal crankshaft 110 Wheel axle QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2019 218 865 A1

[0002]

Claims

[1] Bicycle (100) with a front wheel (103) and a rear wheel (102), • wherein the front wheel (103) is mounted on a frame (104) of the bicycle (100) at least via a handlebar assembly (1) and is pivotable about a steering axis, • wherein means for detecting reaction forces resulting from contact between the front wheel (103) and a road surface during driving are arranged on the handlebar assembly (1), • wherein a data processing unit (2) is connected to the means for detecting reaction forces on the handlebar assembly (1) via signal transmission and is configured to determine the beginning of a flight phase of the front wheel (103) and to adjust at least one signal-transmitting device on the bicycle (100) when a first threshold value for the reaction forces on the handlebar assembly (1) is undershot. [2] Bicycle (100) according to claim 1, wherein the handlebar assembly (1) comprises a handlebar (3) wherein at least one sensor (S4) for detecting a force and / or a torque is arranged on the handlebar (3). [3] Bicycle (100) according to claim 1 or 2, wherein the handlebar arrangement (1) comprises two handlebar grips (4), wherein a sensor (S5) for detecting a force is arranged on at least one handlebar grip (4). [4] Bicycle (100) with a front wheel (103) and a rear wheel (102), • wherein the front wheel (103) is mounted on a frame (104) of the bicycle (100) at least via a handlebar assembly (1) and is pivotable about a steering axis, • wherein means for measuring tire pressure while driving are arranged on at least one of the two wheels, • wherein a data processing unit (2) is connected to the means for recording the tire pressure by means of signal transmission and is configured to determine the beginning of a flight phase of at least one of the two wheels and to adjust at least one device on the bicycle (100) connected thereto by means of signal transmission when a first threshold value for the tire pressure is undershot. [5] Bicycle (100) with a front wheel (103) and a rear wheel (102), • wherein the front wheel (103) is mounted on a frame (104) of the bicycle (100) at least via a handlebar assembly (1) and is pivotable about a steering axis, • wherein means for detecting bearing reaction forces during travel are arranged at at least one bearing (L1, L2, L3) of the bicycle (100), • wherein a data processing unit (2) is connected to the means for detecting bearing reaction forces by means of signal transmission and is configured to determine the start of a flight phase of at least one of the two wheels and to adjust at least one device on the bicycle (100) connected thereto by means of signal transmission when a first threshold value for the bearing reaction forces is undershot. [6] Bicycle (100) according to claim 5, wherein at least one sensor (S1) is arranged on a bearing (L1) of a pedal (107) of the bicycle (100) to detect bearing reaction forces resulting between the pedal (107) and a user's foot. [7] Bicycle (100) according to claim 5 or 6, wherein at least one sensor (S2) is arranged on a bearing (L2) of a pedal crank shaft (109) of the bicycle (100) to detect bearing reaction forces resulting between the pedal crank shaft (109) and the frame (104). [8] Bicycle (100) according to one of claims 5 to 7, wherein at least one sensor (S3) is arranged on a bearing (L3) of a wheel axle (110) of the bicycle (100) to detect bearing reaction forces resulting between the wheel axle (110) and the frame (104). [9] Method for operating a bicycle (100) according to one of claims 1 to 3, wherein the data processing unit (2) determines the beginning of a flight phase of the front wheel (103) and adjusts the at least one signal-transmitting device on the bicycle (100) as soon as the first threshold for the reaction forces on the handlebar assembly (1) is undershot. [10] Method for operating a bicycle (100) according to claim 4, wherein the data processing unit (2) determines the start of a flight phase of at least one of the two wheels and adjusts the at least one signal-transmitting device on the bicycle (100) as soon as the first threshold value for the tire pressure is undershot. [11] Method for operating a bicycle (100) according to one of claims 5 to 8, wherein the data processing unit (2) determines the start of a flight phase of at least one of the two wheels and adjusts the at least one signal-transmitting device on the bicycle (100) as soon as the first threshold for the bearing reaction forces is undershot. [12] Method according to one of claims 9 to 11, wherein the data processing unit (2) determines the end of the respective flight phase and resets the at least one signal-transmitting device on the bicycle (100) when a second threshold for the reaction forces on the handlebar assembly (1) and / or for the tire pressure and / or for the bearing reaction forces is exceeded. [13] Method according to claim 12, wherein the data processing unit (2) determines a jump of the bicycle (100) and adjusts the at least one signal-transmitting device on the bicycle (100) accordingly when a threshold is exceeded for a duration of a flight phase. [14] Method according to any one of claims 9 to 13, wherein the data processing unit (2) determines a jump of the bicycle (100) and adjusts the at least one signal-transmitting device on the bicycle (100) accordingly when a threshold value for a height of the bicycle (100) to the roadway is exceeded. [15] Method according to any one of claims 9 to 14, wherein the data processing unit (2) determines a jump of the bicycle (100) and adjusts the at least one signal-transmitting device on the bicycle (100) accordingly when a threshold value for a pitch angle of the bicycle (100) is exceeded.

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