bicycle rim

Abstract

bicycle rim (4) with - a ring-shaped rim profile (9) for the outer mounting of a tire casing (8), - wherein the rim profile (9) together with the tire casing (8) forms an annular cavity (80) to provide an overpressure area (10), - wherein the rim profile (9) has a first opening, preferably radially oriented to the rim profile (9), for receiving a valve (11) for filling the overpressure area (10) with a gas (G), and - wherein a measuring device (12) with at least one pressure measuring sensor (13) for determining the pressure (p) in the overpressure area (10) is arranged on the rim profile (9), characterized in that a second opening (14) is provided on the rim profile (9) for receiving the measuring device (12), spaced apart from the first opening, which enables an arrangement of the measuring device (12) on the rim profile (9) that is independent of the valve (11).

Description

[0001] The invention relates to a bicycle rim with - a ring-shaped rim profile for the external mounting of a tyre casing, - wherein the rim profile together with the tyre casing forms an annular cavity to provide an overpressure area, - wherein the rim profile has a first opening, preferably aligned radially to the rim profile, for receiving a valve for filling the overpressure area with a gas, and - wherein a measuring device with at least one pressure measuring sensor for determining the pressure in the overpressure range is arranged on the rim profile.

[0002] Pressure sensor systems are currently available for monitoring bicycle tire pressure. These are mounted directly on the tire valve. This directly measures the fluid pressure in the valve area. These systems are retrofit solutions. Due to their valve-mounted design, they are susceptible to mechanical stress, impact, and dirt. The air or media channel, from the valve to the pressure sensor, requires complex sealing. Three seals are required for this alone, which are susceptible to particles and dirt. The correspondingly complex system design therefore results in high costs. Due to the acting pressure of up to 10 bar, additional metallic reinforcements are necessary (metal piston or metal ring including the retaining structure in the plastic housing, etc.).In addition, these are not integrated into the direct mechanics of the wheel, which makes them unsuitable for initial factory equipment or for integration into holistic control systems (tire pressure control) or safety-relevant systems such as ABS.

[0003] Against this background, the object of the invention is to provide a bicycle rim with the features described above, which enables a structurally simpler measurement of the tire pressure while driving.

[0004] According to the invention, this object is achieved by providing a second opening, spaced from the first opening, for receiving the measuring device on the rim profile. This second opening allows for the measuring device to be arranged on the rim profile independently of the valve. According to the invention, the tire pressure measurement is thus structurally decoupled from the tire valve, thereby enabling a completely valve-independent design of the tire pressure measuring system. This also allows, in particular, for the tire pressure measuring system to be easily integrated into the bicycle rim at the factory, so that it can, for example, be easily embedded into an electronic assistance system of the bicycle.

[0005] The bicycle rim can be used on a classic, purely pedal-driven bicycle without motor assistance. However, the bicycle in question can also be a pedelec or an e-bike. The bicycle rim can also be used on pedal-driven three- and four-wheelers (with or without motor assistance), especially those with spokes.

[0006] Preferably, the arcuate distance measured along the rim profile between the first and second openings is at least 1 cm, in particular at least 2 cm, e.g., at least 10 cm. This allows easy accessibility to the second opening for mounting the measuring device. The second opening, which is preferably circular and aligned radially to the rim profile, can have a diameter of at least 4 mm, preferably at least 6 mm. The measuring device expediently passes through the second opening so that the pressure measuring sensor faces the overpressure region and the pressure in the overpressure region can be detected by the pressure measuring sensor. The pressure measuring sensor is preferably aligned radially to the rim profile.

[0007] The pressure sensor can be arranged, in particular, in the outer region of the rim profile facing the overpressure zone. In this case, the pressure sensor is expediently flush radially outwardly with the edge of the rim profile, which is preferably trough-shaped in cross-section, or protrudes beyond it on the outside, i.e., on the casing side. The generally electronic pressure sensor is a pressure measuring device that converts the directly or indirectly detected physical quantity of pressure (= force per area) into a, expediently electronic, output quantity as a measure of the pressure. The pressure sensor can be designed as an embedded, microelectromechanical sensor using silicon technology, preferably resistive, piezoresistive, or capacitive, or as a, for example, film-like, strain sensor, force sensor, resistive, piezoresistive, or capacitive sensor, in particular with at least two structures (pixels).

[0008] According to a preferred embodiment of the invention, the measuring device has at least one control and / or communication unit, preferably for wireless transmission of the electronic measurement signal of the pressure measuring sensor and / or for transmission of data pre-processed by the control and / or communication unit to a remote receiving unit, e.g., to a bicycle on-board computer. This sensor-related data processing is relevant with regard to the energy consumption of the measuring device. This is because it enables only comparatively small amounts of data to be transmitted from the measuring device to the outside, e.g., to the bicycle on-board computer, since a significant portion of the data transport takes place within the measuring device itself between the pressure measuring sensor and the control and / or communication unit. The control and / or communication unit is particularly designed to receive sensor signal data, e.g.,analog or digital raw sensor data, can be temporarily stored and pre-processed and reduced, for example, using sensor data fusion, data filtering, feature extraction, feature selection, or classification. The pre-processed data, with its reduced data volume, can then be made available to the external receiving unit. This protects the power supply unit of the measuring device, in particular, extending its energy service life and also reducing the susceptibility to errors during signal transmission from the pressure sensor to the remote receiving unit. It is also within the scope of the invention for the bicycle on-board computer to use the measurement signals from the pressure sensor to control an ABS system on the bicycle. It is also within the scope of the invention for the measuring device to have an electronic data memory, for example for storing the measurement data from the pressure sensor.

[0009] The measuring device expediently has a power supply unit (e.g., a battery) for supplying electrical power to the measuring device. It is further within the scope of the invention that the power supply unit contains at least one primary battery, in particular a replaceable one, and / or a secondary battery and / or an energy harvester and / or an energy generator based on the vibration or rotational movement of the bicycle rim and / or structures for wireless energy transmission, in particular for inductive energy transmission or electromagnetic energy transmission, and / or structures for passive pressure detection, in particular by detuning an electromagnetic wave.

[0010] In particular, in addition to the pressure measuring sensor, the measuring device can additionally have a, expediently electronic, control or regulating unit for adapting the pressure in the overpressure range to a target value (e.g. 2.5 bar g) or target value range on the basis of the measurement signal from the pressure sensor. It is also within the scope of the invention for this control or regulating unit to be designed as a component of the at least one control and / or communication unit. The corresponding control or regulating signal can be transmitted, for example, to a bicycle on-board computer or directly to a co-rotating compressed gas container (e.g. mounted on the wheel hub), which can process electronic signals. In this case, the measurement signal from the pressure measuring sensor is transmitted via a transmitter wirelessly or, preferably, directly by wire to the nearby, in particular immediately adjacent, control or regulating unit.Control unit, which uses this measurement signal as an input variable for the control or regulation.

[0011] In this context, it is particularly within the scope of the invention that the at least one control and / or communication unit and / or the power supply unit is arranged on the inner side of the rim profile facing away from the overpressure area. For example, the unit can be contained in a region of the measuring device that protrudes radially inward from the inner side of the rim profile.

[0012] There are two main variants for the design of the overpressure zone: tubeless or with a tube. In the tubeless design, the outer side of the rim profile and the inner side of the tire casing jointly define the overpressure zone. Accordingly, in this case, the pressure sensor is located within the overpressure zone. In the alternative design, a tube is arranged within the cavity to define the overpressure zone. In this case, the pressure sensor is conveniently located outside the overpressure zone, but is attached to the outside of the tube and can thus indirectly measure the pressure in the overpressure zone.

[0013] It is further within the scope of the invention that a rim band is arranged on the outside of the rim profile, on the inside of which the pressure measuring sensor that extends through the rim profile rests. Alternatively, a rim band can also be arranged on the outside of the rim profile, into which the pressure measuring sensor is integrated. In this case, the rim band is then a corresponding component of the measuring device. The pressure measuring sensor, in particular a film-like pressure measuring sensor, can be flush on the casing side with the outer, i.e. casing-side, surface of the rim band. The electrical contact of the pressure measuring sensor to the control and / or communication device or to the energy supply unit can be made in particular by means of a plug connection for, preferably film-like, electrical conductors through the rim band.

[0014] The measuring device can be screwed into the rim profile or latched to it. It is also within the scope of the invention for the housing of the measuring device to be adapted to the inner contour of the rim profile and preferably to lie flat against this contour. This is visually appealing and also reduces the risk of damage to the measuring device while driving. In principle, the housing of the measuring device can be one-part or at least two-part and can, for example, have a mushroom-shaped outer contour. Advantageously, the control and / or communication unit and / or the power supply unit are located within a hub-side housing part of the housing, while the pressure measuring sensor is accommodated in a shell-side housing part of the housing.The two aforementioned housing parts can be connected to one another via suitable structures, for example a screw and / or snap-in connection, wherein during this connection process the measuring device is expediently mounted on the rim profile and preferably also the electrical contacting of the electronic components located in the housing parts takes place simultaneously.

[0015] The measuring device can also in principle contain further components, e.g. at least one further pressure sensor and / or at least one temperature sensor and / or at least one acceleration sensor and / or at least one yaw rate sensor and / or at least one wheel speed sensor and / or at least one vibration sensor and / or at least one microphone and / or at least one Hall sensor and / or at least one magnetic field sensor.

[0016] It is also within the scope of the invention for at least one component of the measuring device to be designed as part of a spoke mounted on the rim profile. In this case, the measuring device preferably also serves as a connecting element between the corresponding spoke and the rim profile. Overall, this design achieves the integration of the measuring device into an already required component of the wheel.

[0017] The rim profile itself can be designed as a hollow chamber profile or as a box rim profile. When designed as a hollow chamber profile, the rim profile accordingly has an annular, circumferential hollow chamber with a hub-side wall and a shell-side wall. In this case, the hub-side wall is provided with the second opening, and the shell-side wall is provided with a third opening, which is expediently aligned with the second opening. The measuring device then extends through both the second and third openings, allowing the pressure sensor to measure the pressure in the overpressure range.

[0018] The invention also relates to a wheel for a bicycle with a bicycle rim according to the invention according to claim 20 and to a bicycle with such a wheel.

[0019] The invention is explained in detail below with reference to a drawing that represents only one exemplary embodiment. The drawings schematically show: Fig. 1: a bicycle with a wheel according to the invention; Fig. 2: section a in Fig. 1; Fig. 3: the section A - A in Fig. 2 and Fig. 4-14: further embodiments of the invention in one of the Fig. 3 corresponding representation

[0020] The Fig. Figure 1 shows a bicycle 1 with a bicycle frame 2 and two wheels 3 as well as a saddle 25 and handlebar 30, wherein the wheels 3 each have a tire 5 mounted on a bicycle rim 4 and filled with compressed gas G. The illustrated bicycle 1 is designed as a pedal-driven pedelec and is accordingly equipped with rider assistance in the form of an electric motor 6, which is powered by a battery 7. The wheels 3 each have a wheel hub 40, which enables a rotational movement of the corresponding wheel 3 about the two wheel axles of the bicycle 1, and spokes 50 (indicated only for the front wheel 3), which are arranged between the bicycle rim 4 and the wheel hub 40 and each connect the bicycle rim 4 to the wheel hub 40. Fig. 1 further shows that the bicycle 1 has a bicycle on-board computer 55 mounted on the handlebar 30 with a display (not shown in detail) that shows, for example, the speed of the bicycle 1, the range of the battery 7, etc. The Fig. 2 shows an enlarged section of the front wheel 3 with bicycle rim 4 and a tire casing 8.

[0021] As can be seen from the cross-sectional view according to Fig. 3 in conjunction with the Fig. 1, Fig. 2, the bicycle rim 4 has a closed annular rim profile 9 for the external reception of the tire casing 8. The rim profile 9 forms, together with the tire casing 8, an annular cavity 80 for providing a closed annular overpressure area 10 filled with the compressed gas G. The rim profile 9 further has a conventional first opening (not shown in detail) aligned radially to the rim profile 9 for receiving a valve 11 ( Fig. 1) for filling the overpressure area 10 of the tire 5 with the compressed gas G.

[0022] As can be seen from the figures, an electronic measuring device 12 with an electronic pressure measuring sensor 13 for determining the pressure p in the overpressure region 10 resulting from the filling of the tire 5 with the compressed gas G is arranged on the rim profile 9. To accommodate the measuring device 12, which is equipped with a housing 70, on the rim profile 9, a second circular opening 14 is provided, spaced from the first opening and aligned radially to the rim profile 9, which allows the measuring device 12 to be arranged on the rim profile 9 independently of the valve 11. The housing 70 serves to accommodate the components of the measuring device 12 and is therefore useful both for mechanical reasons (protection of the components against damage) and for optical reasons. The arcuate distance s measured along the inner radius of the rim profile 9 (see Fig. 1) between the first and the second opening 14 in the exemplary embodiment is almost half the inner diameter of the rim profile 9 multiplied by the number π, ie more than 50 cm. The second opening 14 has a diameter d of at least 4 mm. It can be seen that the measuring device 12 passes through the second opening 14, so that the pressure measuring sensor 13 faces the overpressure area 10 and the pressure p in the overpressure area 10 can be detected by the pressure measuring sensor 13. In the exemplary embodiment according to Fig. 3, the rim profile 13 is designed as a hollow chamber profile. Accordingly, the rim profile 13 has an annular, circumferential hollow chamber 15 with a hub-side wall 16 and a shell-side wall 17, wherein the hub-side wall 16 is provided with the second opening 14 and the shell-side wall is provided with a third, likewise circular opening 18, which is aligned with the second opening 14. The measuring device 12 then passes through both the second opening 14 and the third opening 18. During assembly of the measuring device 12, the shell-side component 12' of the measuring device 12 containing the pressure measuring sensor 13 is pushed through the third opening 18 and the hub-side component 12" of the measuring device 12 is pushed through the second opening 14. Then, during assembly, the two components 12', 12'' are connected to one another, in the exemplary embodiment in the region of the second opening 14 by means of a screw connection 90.The pressure measuring sensor 13 is aligned radially to the rim profile 9 and arranged in the outer region of the rim profile 9 facing the overpressure area 10. The pressure measuring sensor 13 is located in the exemplary embodiment according to . Fig. 3 projects radially slightly outward, e.g., by at least 0.2 mm, relative to the trough-shaped wall 17 of the rim profile 9. The measuring device 12 has an electronic control and communication unit 19 for wirelessly transmitting the measurement signal from the pressure sensor 13 and the data preprocessed by the control and communication unit 19 to the bicycle on-board computer 55, and a power supply unit 20 in the form of an electric battery for wirelessly (or alternatively, wired) supplying electrical power to the pressure sensor 13 and the control and communication unit 19.The housing 70 of the measuring device 12 is designed in two parts and consists accordingly of a shell-side housing part 70', in which the pressure measuring sensor 13 is arranged, and a hub-side housing part 70", within which the communication unit 19 and the battery 20 are located, wherein the two housing parts 70', 70" are screwed together in the region of the second opening 14.

[0023] The control and communication unit 19 is designed in such a way that it can temporarily store sensor signal data, in particular analog or digital raw sensor data, and preprocess and reduce it, for example, by means of sensor data fusion, data filtering, feature extraction, feature selection, and classification. This preprocessed data, with its reduced data volume, can then be transmitted wirelessly to the bicycle on-board computer 55. The measurement signal of the pressure sensor 13 is transmitted via a (only in Fig. 3) to the nearby control and communication unit 19, which uses this measurement signal as an input variable. In this case, measurement signals recorded within a certain time interval can be summed and used as a time-averaged measurement signal for the control. This sensor-related data processing is relevant with regard to the energy consumption of the electronic components of the measuring device 12, i.e. of the pressure measuring sensor 13 and the control and communication unit 19. Based on the measurement data, the unit 19 then sends a data signal at comparatively long intervals, for example to the bicycle on-board computer 55, or directly control signals to an electronically controllable compressed gas container with compressed gas G (not shown), which can be arranged, for example, in the co-rotating hub 40 and, for example,according to the control signal, pressurized gas G is poured into the overpressure area 10 in order to compensate for a pressure drop in the tire 5 determined by the pressure measuring sensor 13. It can be seen that the control and communication unit 19, as well as the battery 20, are arranged on the inside of the rim profile 9 facing away from the overpressure area 10. The control and communication unit 19, as well as the battery 20, are accordingly arranged in the part of the housing 70 of the measuring device 12 that protrudes inwards, i.e., on the hub side. The communication unit 19 also has an electronic data memory in which, for example, the measurement data determined by the pressure measuring sensor 13 can be stored.

[0024] The Fig. 3 further shows that a hose 21 delimiting the overpressure area 10 is arranged within the cavity 80. Accordingly, the pressure sensor 13 is located outside the overpressure area 10, but is located on the outside of the hose 21 and can thereby indirectly measure the pressure p in the overpressure area 10.

[0025] In the embodiment according to Fig. 4, the measuring device 12 is locked to the rim profile 9 via a locking structure 100, which in Fig. 4 is shown only symbolically. During assembly, the measuring device 12 with its in this case one-piece housing 70 is pushed from the hub 40 through the two openings 14 and 18. The housing 70 has on its outside at least one locking element or, in particular, an expanding element which expands by screwing in a screw, which during the insertion or assembly process locks, for example, with at least one counter-locking element arranged on the rim profile 12, preferably in the region of the second opening 14, and thus securely fastens the measuring device 12 to the rim profile 9.

[0026] In the embodiment according to Fig. 5, the housing 70 of the measuring device 12, which is provided with an external thread (not shown in detail), is preferably also designed in one piece and is screwed to the rim profile 9 via an internal thread provided on the inner edge of the second opening 14, e.g. in the form of a blind rivet nut 110 inserted into the second opening 14.

[0027] According to Fig. 6, the housing 70 is again constructed in two parts. The shell-side housing part 70' is connected to the hub-side housing part 70" via a screw connection 90'. Furthermore, the shell-side housing part 70' is screwed to the rim profile 9, preferably on the hub-side outer side of the second opening 14, via a second screw connection 90", whereby the measuring device 12 is mounted on the bicycle rim 4. The housing 70 has an overall mushroom-shaped structure.

[0028] In the example in Fig. 7, a rim band 22 is arranged on the outer side of the rim profile 9, on the hub-side inner side of which the pressure measuring sensor 13, which extends through the rim profile 9, is located. In this case, the pressure measuring sensor 13 indirectly measures the pressure p within the overpressure range 10 through the rim band 22 and also the tube 21.

[0029] In Fig. 8, the pressure measuring sensor 12 is arranged on the outside of the rim band 22 and integrated therein. The rim band 22 is therefore a component of the measuring device 12. In the exemplary embodiment, the particularly foil-like pressure measuring sensor is flush with the surface of the rim band 22 on the casing side, thus being embedded therein accordingly. The electrical contact of the pressure measuring sensor 12 to the control and communication device 19 or to the battery 20 is established in particular by means of a plug connection, preferably for foil-like electrical conductors, and here accordingly through the rim band 22 (not shown in detail).

[0030] In the embodiment according to Fig. 9, the housing 70 of the measuring device 12 is designed to fit the inner, ie hub-side, contour of the rim profile 9. The housing 70 can in particular also be designed to be flexible enough to be adaptable to different hub-side geometries of rim profiles 9. It can be seen that in this embodiment, the correspondingly designed housing can accommodate two power supply devices, whereby the functional reliability of the measuring device 12 can be increased. Fig. As can be seen from Figure 9, the housing 70 can have a wing-shaped contour, particularly movable in cross-section, that can be adapted to the rim shape. The housing 70 is constructed in two parts, with the hub-side housing part 70" having the wing shape and being connected to the shell-side housing part 70' via a screw connection 90.

[0031] According to Fig. 10, the hub-side component of the measuring device 12, which contains both the control and communication unit 19 and the power supply unit 20, is integrated into a spoke 50 of the corresponding wheel 3. The housing 70 is again formed in two parts, with the hub-side housing part 70" being attached to the spoke 50 and the shell-side housing part 70' with the pressure measuring sensor 13 being located within the rim profile 9. Here, too, the two housing parts 70', 70" are connected to one another by a screw connection 90.

[0032] In the embodiments according to Fig. 11, Fig. 12, the outer side of the rim profile 9 and the inner side of the tire casing 8 jointly define the overpressure area 10, i.e., these designs are tubeless. In this case, the pressure measuring sensor 12 is located within the overpressure area 10 and directly measures the pressure p within this area 10. The measuring device 12 is provided with seals (not shown in detail) that seal the overpressure area 10 from the measuring device 12 and the outer side of the rim profile 9.

[0033] In the Fig. 13, Fig. 14, the rim profile 9 is designed as a box rim profile, ie without a closed hollow chamber structure. Here, the shell-side wall 17 and the hub-side wall 16 of the rim profile are directly adjacent and the second opening 14 extends from one wall 16 to the other wall 17. While the Fig. 13 shows an embodiment with hose 21, is in Fig. 14 shows a tubeless variant.

[0034] The bicycle rim according to the invention can be used on a classic, purely pedal-driven bicycle without motor assistance. However, the bicycle in question can also be a pedelec or an e-bike. The bicycle rim can also be used on pedal-driven three- and four-wheelers (with or without motor assistance), especially those with spokes.

Claims

[1] Bicycle rim (4) with - an annular rim profile (9) for receiving a tyre casing (8) on the outside, - wherein the rim profile (9) together with the tyre casing (8) forms an annular cavity (80) for providing an overpressure area (10), - wherein the rim profile (9) has a first opening, preferably aligned radially to the rim profile (9), for receiving a valve (11) for filling the overpressure area (10) with a gas (G), and - wherein a measuring device (12) with at least one pressure measuring sensor (13) for determining the pressure (p) in the overpressure area (10) is arranged on the rim profile (9), characterized by that a second opening (14) is provided at a distance from the first opening to accommodate the measuring device (12) on the rim profile (9), which second opening enables the measuring device (12) to be arranged on the rim profile (9) independently of the valve (11). [2] Bicycle rim (4) according to claim 1, characterized by that the arcuate distance (s) measured along the inner radius of the rim profile (9) between the first and the second opening (14) is at least 1 cm, preferably at least 2 cm. [3] Bicycle rim (4) according to claim 1 or 2, characterized by that the second opening (14), which is preferably circular and aligned radially to the rim profile (9), has a diameter (d) of at least 4 mm, preferably at least 6 mm. [4] Bicycle rim (4) according to one of claims 1 to 3, characterized by that the measuring device (12) passes through the second opening (14) so ​​that the pressure measuring sensor (13) faces the overpressure area (10) and the pressure (p) in the overpressure area (10) can be detected by the pressure measuring sensor (13). [5] Bicycle rim (4) according to one of claims 1 to 4, characterized by that the pressure measuring sensor (13) is aligned radially to the rim profile (9). [6] Bicycle rim (4) according to one of claims 1 to 5, characterized by that the pressure measuring sensor (13) is arranged in the outer region of the rim profile (9) facing the overpressure region (10). [7] Bicycle rim (4) according to claim 6, characterized by that the pressure measuring sensor (13) ends radially outwards with the edge of the rim profile (9), which is preferably trough-shaped in cross-section, or projects beyond it on the outside. [8] Bicycle rim (4) according to one of claims 1 to 7, characterized by that the measuring device (12) has at least one control and / or communication unit (19), preferably for the wireless transmission of the measuring signal of the pressure measuring sensor (13) and / or for the transmission of data pre-processed by the control and / or communication unit (19) to a remote receiving unit (55), and / or a power supply unit (20) for the particular electrical power supply of the measuring device (12). [9] Bicycle rim (4) according to one of claims 1 to 8, characterized by that the measuring device (12) in addition to the pressure measuring sensor (13) additionally has a control or regulating unit for adapting the pressure (p) in the overpressure range (10) to a desired value or desired value range on the basis of the measuring signal of the pressure measuring sensor (13) or this control or regulating unit is designed as a component of the at least one control and / or communication unit (19). [10] Bicycle rim (4) according to claim 8 or 9, characterized by that the at least one control and / or communication unit (19) and / or the energy supply unit (20) is arranged on the inner side of the rim profile (9) facing away from the overpressure region (10). [11] Bicycle rim (4) according to one of claims 1 to 10, characterized by that the outside of the rim profile (9) and the inside of the tyre casing (8) together limit the overpressure area (10). [12] Bicycle rim (4) according to one of claims 1 to 11, characterized by that a hose (21) delimiting the overpressure area (10) is arranged within the cavity (80). [13] Bicycle rim (4) according to one of claims 1 to 12, characterized by that a rim band (22) is arranged on the outside of the rim profile (9), on the inside of which the pressure measuring sensor (13) spanning the rim profile (9) is located. [14] Bicycle rim (4) according to one of claims 1 to 13, characterized by that a rim band (22) is arranged on the outside of the rim profile (9), into which the pressure measuring sensor (13) is integrated. [15] Bicycle rim (4) according to one of claims 1 to 14, characterized by that the measuring device (12) is screwed into the rim profile (9) or locked to it. [16] Bicycle rim (4) according to one of claims 1 to 15, characterized bythat the measuring device (12) has a housing (70), for example a one-part or at least two-part housing. [17] Bicycle rim (4) according to claim 16, characterized by that the housing (70) of the measuring device (12) is adapted to the inner contour of the rim profile (9). [18] Bicycle rim (4) according to one of claims 1 to 17, characterized by that at least one component of the measuring device (12) is designed as part of a spoke (50) mounted on the rim profile (9). [19] Bicycle rim (4) according to one of claims 1 to 18, characterized by that the rim profile (9) is designed as a hollow chamber profile or as a box rim profile. [20] Wheel (3) for a bicycle (1) with - a bicycle rim (4) with a tyre casing (8) and valve (11) according to one of claims 1 to 19, - a wheel hub (40) which enables a rotational movement of the wheel (3) around a wheel axle of the bicycle (1), and - Spokes (50) which are arranged between the bicycle rim (4) and the wheel hub (40) and connect the bicycle rim (4) to the wheel hub (40). [21] Bicycle (1) with at least one wheel according to claim 20.

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