Electric motor-driven vehicle and display unit for electric motor-driven vehicle

Abstract

The invention relates to an electric motor-driven vehicle (10), in particular an electric motor-driven single-or two-wheeled vehicle (12), comprising a frame (18), a display unit (36) for the driver to interact with the electric motor-driven vehicle (10) being arranged in a surface (40) of the frame (18). According to the invention, the surface (38) of the display unit (36) is integrated flush into the surface (40) of the frame (18) such that a plane is formed by means of an intermediate layer (66) arranged between the display unit (36) and the frame (18).

Description

Technical Field

[0001] The invention relates to an electric motor-driven vehicle, in particular an electric motor-driven one-wheeled or two-wheeled vehicle, and a display unit for an electric motor-driven vehicle, the vehicle having a frame, according to the type of the independent claims. Background Art

[0002] It is known to incorporate a display unit with a display into the surface of the top tube of an electric motor-driven two-wheeled vehicle frame, located between the handlebars and the seat, for the driver to interact with the vehicle. This type of solution has been proposed by manufacturers such as Brose or Giant, in which the display unit is mounted protrudingly into the top tube. At VanMoof, the display unit's display is also integrated into the translucent top tube, allowing the top tube's lighting to shine through. However, this display has only very low resolution, making it suitable for coarse status displays of individual pieces of information. Summary of the Invention

[0003] One object of the present invention is to provide a display unit in the frame of a vehicle driven by an electric motor which is improved compared to the prior art and which is largely insensitive to movements of the frame as well as to weather and other environmental influences.

[0004] Advantages of the invention

[0005] To achieve this objective, the surface of the display unit is flushly integrated into the surface of the frame, so that a flat surface is formed by an intermediate layer arranged between the display unit and the frame. The flush surfaces of the display unit and the frame result in maximum insensitivity to water, dust, and dirt. "Flush" is to be understood as meaning that the surface essentially forms a flat surface on which water, dust, or dirt cannot accumulate in any unevenness (e.g., depressions, gaps, ridges, etc.). However, it should be noted that these flat surfaces themselves become dirty during normal use, as they do not necessarily need to be coated to be waterproof or stain-resistant. In this context, "flat" is to be understood as meaning that the respective surfaces have only a minimum height deviation of less than 0.1 mm.

[0006] Vehicles driven by electric motors can be designed, for example, as electric bicycles (e.g., EPACs—electrically assisted bicycles, electric pedelecs, pedal bikes, electric cargo bikes, etc.), electric motorcycles, one- or two-wheeled electric scooters, electric mopeds, etc. The present invention is also applicable to other applications in the field of micromobility, such as electric pedal scooters, unicycles, or other non-type-approved vehicles with a battery pack that is fixedly or replaceably installed in the vehicle. Therefore, the term "vehicle driven by electric motor" should also be understood to mean a vehicle having a drive unit or a partial drive unit with an electric motor for driver support.

[0007] An electric motor-driven vehicle's energy supply is provided by an energy storage unit, which is either permanently integrated into the vehicle or configured as a replaceable battery pack that can be removed without tools. In the case of a replaceable battery pack, it can also be configured to be rechargeable both when connected to the electric motor-driven vehicle and when disconnected from the vehicle. The battery voltage of an energy storage unit is typically a multiple of the voltage of the individual energy storage cells of the energy storage unit and is generated by interconnecting the individual energy storage cells (in parallel and / or in series). Preferably, the energy storage cells are configured as lithium-based energy storage cells, such as lithium-ion, lithium polymer, lithium metal, sodium-ion, etc. However, the present invention is also applicable to energy storage units having nickel-cadmium, nickel-metal hydride, or other suitable cell types. For a typical lithium-ion energy storage cell with a cell voltage of 3.6 V, this results in nominal cell voltages of 3.6 V, 18 V, 36 V, 54 V, etc., by way of example. However, the present invention does not depend on the type and structure of the energy storage cell and energy storage unit used, but can be applied to any electrochemical energy storage unit and energy storage cell with a battery voltage of 36 volts, 48 ​​volts, 52 volts, etc. For example, in addition to round batteries, it can also be applied to soft-pack batteries, etc.

[0008] A "display unit" is understood to mean a structural unit that can be separated from the vehicle frame and has its own housing and a display, particularly a touchscreen display, for the driver to interact with the vehicle. The display unit is used, in particular, to inform the driver about various states (e.g., the charge state of the energy storage unit, the shift state of the gearshift mechanism, the status of the vehicle lighting, etc.). The display unit can also be designed as an onboard computer with an integrated processor and, if necessary, integrated sensors for navigation, air pressure measurement, temperature measurement, brightness measurement, etc. In this context, various components of the vehicle can be directly controlled via the display unit, particularly via a touchscreen display or separate buttons.

[0009] In one embodiment, the intermediate layer is integrally connected to the housing of the display unit. This makes it particularly easy to install the display unit in the frame, as the display unit is already designed as a prefabricated module due to the intermediate layer connected to the housing. For this purpose, the display unit has at least one fastening means (particularly a screw or screw receptacle) and a tolerance compensation element (particularly a leaf spring) for fastening to the frame. A display designed as a touch display very simply enables an operator to actively interact with an electric vehicle using finger controls, for example, to influence the shifting behavior of a gearshift mechanism, the illumination of the vehicle's lighting system, the energy management of the vehicle's battery, vehicle navigation, and so on.

[0010] The intermediate layer is preferably made of an elastic material, in particular a thermoplastic elastomer or silicone. In this context, the intermediate layer can be designed to be more elastic than the housing. The elastic intermediate layer simplifies the particularly flush integration of the display unit into the frame, as it allows compensation for possible manufacturing and assembly tolerances. Furthermore, relative movements between the display unit and the frame, which can occur, for example, due to deformation of the frame when the electric motor-driven vehicle is jolted, dropped, or changes direction suddenly, can be compensated.

[0011] In the assembled state, the intermediate layer of the display unit is designed to deform, in particular to be compressed, in order to ensure that the display unit fits as tightly as possible in the frame. To prevent fluids from penetrating into the frame, for example during cleaning of an electric motor-driven vehicle or in the event of heavy rain, the intermediate layer is designed as a seal between the frame and the display unit.

[0012] Furthermore, the object of the present invention is to provide a display unit in the framework of an electric motor-driven vehicle which is improved compared to the prior art and which, on the one hand, provides a surface that is largely insensitive to weather and other environmental influences and, on the other hand, offers the possibility of wired connection of external devices.

[0013] To achieve this objective, a display unit is provided having a surface with a display (in particular a touch display) and a connection socket embedded in the surface for data and / or energy transmission, wherein the surface of the display unit is flush-integrated into the surface of the frame, and the connection socket is recessed relative to the surface. Due to the flush surface, the display is largely insensitive to water, dust, and dirt, while the connection socket can be used to transmit data and / or energy from or to an external device (e.g., a smartphone, etc.).

[0014] In one embodiment, the connection socket can be closed with a cover cap so that the cover cap ends flush with the surface. Thus, the connection socket itself is also protected from possible weather or other environmental influences.

[0015] The cap can be made of a rigid material, particularly a thermoplastic such as PC-ABS, and / or an elastic material, particularly a thermoplastic elastomer, silicone, or rubber. Thus, for example, a two-component cap can be constructed, with the lid made of a rigid material and the hinge for opening and closing the lid made of an elastic material. This ensures a good sealing function of the cap and, on the other hand, high durability. Furthermore, this makes it easier to replace a damaged cap.

[0016] In an alternative embodiment, the connection socket can be rotated about the rotation axis so that it ends flush with the surface in the closed state. This eliminates the need for a separate cover cap. However, a connection socket configured in this way requires more installation space and, if necessary, more complex contacts.

[0017] The connection socket has an electromechanical interface that is raised relative to the surface-type recess surrounding it. Therefore, fluid cannot flow directly into the electromechanical interface, thereby avoiding corrosion of the electrical contacts of the electromechanical interface or a possible short circuit. Particularly advantageously, the housing of the display unit has a drainage channel that is connected to the recess. This allows the fluid to be drained via the housing into the upper tube or through the upper tube. Particularly advantageously, the connection socket is designed as a USB-C socket. However, other sockets for data and / or energy transmission are also conceivable, such as USB-A, micro-USB, round sockets, etc.

[0018] A further object of the present invention may be to provide a display unit in an electric motor-driven vehicle which is improved compared to the prior art and which can reliably and acoustically inform the vehicle driver of possible status changes, warnings and / or alarms over a long period of time.

[0019] To achieve this goal, the display unit has an acoustic converter that is arranged in the display unit and is therefore protected from weather influences. This advantageously ensures that the driver is acoustically informed of information over a long period of time, regardless of external influences.

[0020] In one embodiment, it is provided that the sound converter can generate a sound level of at least 2.7 sones at a distance of approximately 70 cm. In this way, a sufficiently loud signal is ensured at the driver's ears even during driving.

[0021] In one embodiment, the sound transducer is designed as a piezoelectric speaker, which is arranged on the underside of a display unit, in particular a touch display, so that it stimulates the display to generate sound. This is particularly advantageous because the sound transducer can be designed to be particularly flat and, due to the display being oriented toward the driver, can transmit sufficient sound energy. Furthermore, the display can be completely sealed against weather and other environmental influences by means of a closed housing.

[0022] In an alternative embodiment, the display unit has a housing, wherein the sound converter is arranged on a circuit board in the housing so that the sound it generates is emitted through an opening arranged on a surface of the housing facing away from the frame. The sound converter can preferably be configured as a dynamic speaker or a buzzer.

[0023] An acoustic chamber is additionally formed within the housing to direct sound from the sound converter to the opening. This acoustic chamber can be constructed as a sub-housing surrounding the sound converter, preferably made of an elastomer. This concentrates the sound waves and directs them downward into the upper tube. The downward-opening design of the housing protects the opening from weather and environmental influences. At the same time, an adequate sound level is achieved for the driver of the electric vehicle. Furthermore, if the main extension plane of the circuit board is aligned parallel to the display, installation within the housing is simplified.

[0024] In the assembled state, the intermediate layer of the display unit is configured to be deformed, in particular compressed, to ensure that the display unit fits as tightly as possible in the frame. Particularly advantageously, the intermediate layer also enables improved sound dissipation, since, for example, unfavorable resonances between the display unit and the frame can be avoided.

[0025] In another embodiment, the electric motor-driven vehicle has a handlebar and a seat, wherein a top tube of the frame is arranged between the handlebar and the seat, and the display unit is particularly flush-integrated into the surface of the top tube. The top tube of the frame is particularly advantageously suited for integrating the display unit because it allows the driver to always have a clear and direct view of the display of the display unit. Furthermore, the generally suitable arrangement of the top tube in the frame prevents fluids and other dirt from adhering to the surface of the display unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Below, reference Figures 1 to 9 Detailed Description of the Preferred Embodiments The present invention is explained in detail with reference to the accompanying drawings, wherein identical reference numerals in the drawings denote identical components having the same functionalities.

[0027] It shows

[0028] Figure 1 : Schematic diagram of an electric motor driven vehicle configured as a two-wheeled electric bicycle, the vehicle having a frame,

[0029] Figure 2 : a display unit integrated into the top tube of the frame in a section along a vertically extending longitudinal plane of the top tube,

[0030] Figure 3 : a display unit with a housing in a perspective view from its bottom surface,

[0031] Figure 4 : The empty housing of the display unit in another stereoscopic view,

[0032] Figure 5 : Another embodiment of a display unit in a stereoscopic view from above,

[0033] Figure 6: Display unit in a section from below running parallel to the surface of the display unit or the upper tube,

[0034] Figure 7 : Connection socket of the display unit in a stereoscopic detail view,

[0035] Figure 8 : the display unit in a three-dimensional section perpendicular to the surface of the display unit or the top tube, and

[0036] Figure 9 : The display unit in another perspective view, with the cover removed. DETAILED DESCRIPTION

[0037] exist Figure 1 1 shows a schematic diagram of a vehicle 10 driven by an electric motor, which is configured as a two-wheeled electric bicycle 12. Electric bicycle 12 is supplied with energy by an energy storage unit 16 configured as a replaceable battery pack 14 and can be configured, for example, as a pedal-assisted bicycle, an electric scooter (e-bike), or the like. Electric bicycle 12 has a housing in the form of a frame 18 with two wheels 20 mounted therein. Replaceable battery pack 14 is detachably connected via a connecting device 22 provided on frame 18, which electromechanically interacts with an interface (not shown in detail) mounted on housing 24 of replaceable battery pack 14.

[0038] The electric bicycle 12 also has a drive unit 26, which includes an electric motor 28 in the form of a mid-mounted motor, preferably configured as an EC motor or a BLDC motor. Alternatively, a hub motor in one of the wheels 20 could be used instead of a mid-mounted motor. The drive unit 26 is also supplied with energy by a replaceable battery pack 14 and includes an electronics unit (not shown) for controlling or regulating the electric bicycle 12, particularly the electric motor 28. The electronics unit is also connected to a sensor unit (also not shown), which may include, for example, a torque sensor, a speed sensor, a motion sensor, a magnetic sensor, etc., for detecting motor data. The electric bicycle 12 also has a pedal crank 30 with a pedal crank shaft 32, which the rider can use to pedal to drive the rear wheel 20 in the manner of a conventional bicycle drive. The electronics unit, the drive unit 26 with the electric motor 28, and the pedal crank shaft 32 are arranged in a drive housing 34 connected to the frame 18.

[0039] The drive motion of the electric motor 28 is preferably transmitted to the pedal crankshaft 32 via a transmission (not shown), wherein the support intensity of the drive unit 26 is controlled or adjusted by an electronic unit. The electronic unit is configured to operate the drive unit 26 so that the driver of the electric bicycle 12 is supported when pedaling. Preferably, the electronic unit is configured to be operable by the driver so that the driver can adjust the support level.

[0040] The electric bicycle 12 includes a display unit 36, whose surface 38 is flush-integrated into a surface 40 of a top tube 42 of the frame 18, such that the two surfaces 38, 40 form a single plane. In this context, "plane" should be understood to mean that the two surfaces 38, 40 have only a minimal height offset of less than 0.1 millimeters. The top tube 42 is positioned between the handlebars 44 and the seat 46 of the electric bicycle 12. It should also be noted that the display unit 36 ​​can also be integrated into the frame 18 at other locations. Thus, in particular, women's bicycles do not have distinct top and down tubes, but rather merge these two tubes into a common tube into which the display unit 36 ​​can then be integrated. Integration into the handlebars of the frame 18 is also conceivable.

[0041] exist Figure 2, the display unit 36 ​​integrated into the top tube 42 is shown in a cross-section along a vertically extending longitudinal plane of the top tube 42 or frame 18. The display unit 36 ​​includes a display 50, designed as a touchscreen display 48, for displaying information and / or for operating the display unit 36 ​​or for controlling the drive unit 26 and / or driving the wheels 20 of the electric bicycle 12. The touchscreen display 48 forms the surface 38 of the display unit 36, which terminates flush with the surface 40 of the top tube 42. This is particularly advantageous because the driver can actively interact with the electric bicycle 12 using finger controls to, for example, influence the shifting behavior of the gearshift mechanism, the lighting conditions of the electric bicycle 12's lighting system, the energy control of the replaceable battery pack 14 of the electric bicycle 12, and vehicle navigation. At the same time, the touchscreen display 48, due to its inclination and the plane it forms with the top tube 42, is largely insensitive to water, dust, and dirt. The display unit 36 ​​is connected to the drive unit 26 for the exchange of information and commands. In addition to the aforementioned sensor unit for electric motor 28, connections are also available to various sensor units that can detect various data about electric bicycle 12 (e.g., speed, acceleration, gradient, cadence, etc.), various environmental data (e.g., air pressure, brightness, etc.), and / or various driver data (e.g., heart rate, blood oxygen content, etc.). The connection can be established via a cable or wirelessly (e.g., via Bluetooth). In this way, touchscreen display 48 can display, for example, the determined speed, the set support level for electric motor 28, route information from the navigation unit integrated in display unit 36, the charge status of replaceable battery pack 14, and so on.

[0042] Display unit 36 ​​includes a housing 52, which houses, in addition to touch display 48, a circuit board 54. Circuit board 54 is arranged in housing 52 so that its main extension plane is parallel to touch display 48. It carries various semiconductor components of electronics unit 56, such as a microprocessor, resistors, capacitors, transistors, diodes, chokes, sensors, and the like. However, this will not be discussed further here, as the structure of electronics unit 50 is not a subject of the present invention. A sound transducer 58 is arranged on the side of circuit board 54 opposite electronics unit 56 and touch display 48. Sound generated by it is emitted through an opening 60 in housing 52, located facing away from surface 40 of upper tube 42. Sound transducer 58 may be configured, for example, as a dynamic speaker, buzzer, or the like. Within housing 52, a subhousing 62 surrounds sound transducer 58, forming an acoustic chamber 64 for directing sound from sound transducer 58 to opening 60. Subhousing 62 is preferably made of an elastomer to provide improved sound insulation between circuit board 54 and housing 52. However, it is also conceivable that the subhousing 62 be made of thermoplastic or the same material as the housing 52. Thus, the subhousing 62 can be adapted to accommodate the use of various sound transducers 58 within the housing 52. On the one hand, the subhousing 52 concentrates and directs the sound waves downward into the upper tube 42, while on the other hand, the opening 60 and, therefore, the circuit board 54, along with the sound transducer 58 and the electronics unit 56, are protected from weather and environmental influences due to the downwardly open design of the housing 52. At the same time, a sufficient sound level of at least 2.7 sones can be generated at the driver's ear, i.e., at a distance of approximately 70 centimeters from the upper tube 42 or the surface 40 of the frame 18.

[0043] Figure 3 The display unit 36 ​​with the housing 52 is shown in a perspective view from the bottom of the display unit. The opening 60 for the sound emission can be clearly seen. In addition, the housing 52 is connected to an intermediate layer 66 in a material-locking manner, which is made of an elastic material, in particular a thermoplastic elastomer or silicone. The intermediate layer 66 is arranged between the upper tube 42 and the surfaces 38, 40 of the display unit 36 ​​so that it forms a plane of the two surfaces 38, 40 in the assembled state of the display unit 36 ​​(see also FIG. Figure 2 The integral connection of the intermediate layer 66 to the housing 52 makes it particularly easy to install the display unit 36 ​​in the upper tube 42, since the display unit 36 ​​is thus designed as a prefabricated module. For this purpose, the display unit 36 ​​has a fastening means 67 in the form of a screw boss 68 and a tolerance compensation element 69 in the form of a leaf spring for fastening it in the upper tube 40 of the frame 18.

[0044] To further illustrate, in Figure 4, another perspective view shows the hollow housing 52 of the display unit 36 ​​with an intermediate layer 66. The intermediate layer 66 facilitates the flush integration of the touch display 48 into the top tube 42, as it allows for compensating for any manufacturing and assembly tolerances. Furthermore, it compensates for any relative movement between the display unit 36 ​​and the top tube 42, which can occur, for example, due to deformation of the frame 18 when the electric bicycle 12 is jolted, dropped, or changes direction suddenly. To prevent fluids from penetrating the top tube 42, for example, during cleaning of the electric bicycle 12 or during heavy rain, the intermediate layer 66 is configured as a seal 70 between the top tube 42 and the display unit 36.

[0045] exist Figure 5 and Figure 6 In the stereoscopic view from above ( Figure 5 ) and a section from below running parallel to the surfaces 38, 40 of the display unit 38 or the upper tube 42 ( Figure 6 ) shows another embodiment of the display unit 36. The sound converter 58 is not designed as a dynamic speaker or a buzzer, but as a very flat piezoelectric speaker 71, for example a so-called PiezoListen speaker from TDK, which is arranged on the underside 72 of the touch display 48 so that it stimulates the touch display 48 to produce sound. Therefore, sufficient sound energy (in particular the mentioned 2.7 sones at a distance of about 70 cm) can be transmitted to the driver via the touch display 48 oriented towards the driver. In contrast to the aforementioned embodiment, the housing 52 can thus be completely closed to protect the display unit 36 ​​from weather and other environmental influences. It should also be noted that for better illustration, Figure 4 The touch display 48 in FIG. 4 is presented without a top cover glass (see FIG. Figure 8 ). Thus, the touch display 48 does not appear to be flush with the surface 40 of the upper tube 42. However, in fact, according to the above Figures 1 to 3 This is indeed the case. Furthermore, the display unit 36 ​​has buttons 74 flush-fitted into the surface 38 for alternative and / or supplementary tactile control. Thus, for example, the display unit 36 ​​can be switched on and off using one of these buttons, while one button 74 switches the view of the touch display 48 and another button 74 changes an input value. In this context, it is also possible for the display 50 not to be designed as a touch display, but to be used purely for information display. Furthermore, a connection socket 76 for data and / or energy transmission to an external device (e.g., a smartphone, etc.) is recessed into the surfaces 38, 40 of the display unit 36 ​​or the top tube 42, as will be discussed in more detail below.

[0046] Figure 7A detailed view shows the connection socket 76 of the display unit 36. The connection socket 76 can be closed with a cap 78 so that, when closed, it terminates flush with the display unit 36 ​​or the surfaces 38, 40 of the upper tube 42, thereby protecting the connection socket 76 from possible weather or other environmental influences. The cap 78 is designed as a two-component cap 78 having a cover 80 and a hinge 82. The cover 80 is made of a rigid material, particularly a thermoplastic such as PC-ABS, while the hinge 82 is made of an elastic material, particularly a thermoplastic elastomer, silicone, or rubber. This ensures both a good sealing function of the cap 78 and high durability.

[0047] Connecting socket 76, typically designed as a USB-C socket, has an electromechanical interface 84 that is raised relative to a surrounding recess 86. Electromechanical interface 84 is designed to receive a corresponding USB-C plug. This raised design relative to recess 86 prevents fluid from flowing directly into electromechanical interface 84, which prevents corrosion or possible short circuits of the electrical contacts of electromechanical interface 84, significantly reducing the risk.

[0048] Figure 8 The display unit 36 ​​is shown in a perspective section perpendicular to the surfaces 38, 40 of the display unit 48 or the upper tube 42. In particular, the touch display 48, which is electrically connected to the circuit board 54 via the connector 88, is shown, and which consists in a highly simplified manner of a layer 90 for display and capacitive touch detection and a cover glass 92 forming the surface 38 ( Figure 5 Not shown) composition.

[0049] The housing 52 of the display unit 36 ​​has an outlet channel 94, which is connected to the recess 86 of the connecting socket 76 so that a fluid (e.g., water) can be discharged via the housing 52 into the upper tube 42 or through the upper tube 42. Instead of a USB-C socket, other sockets for data and / or energy transmission to external devices are also conceivable, such as USB-A, micro-USB, round sockets, etc.

[0050] exist Figure 9 , the display unit 36 ​​is shown in another perspective view, with the cover 78 removed. To facilitate the replacement of the cover 78, its hinge 82 is received in a corresponding retaining groove 96. The hinge 82 can then be inserted or removed from the side without tools. In an alternative configuration, it can also be provided that the connection socket 76 can be rotated about the rotation axis so that it ends flush with the surfaces 38, 42 in the closed state. This makes it possible to omit the cover 78. However, a connection socket 76 configured in this way requires more installation space and, if necessary, more complex contacts.

[0051] Finally, it should be pointed out that the embodiments shown are neither limited to Figures 1 to 9 , nor are they limited to the shapes, numbers and size ratios of the various components shown, which should be understood as examples only.

Claims

1. An electric motor-driven vehicle (10), in particular an electric motor-driven one-wheeled or two-wheeled vehicle (12), having a frame (18), wherein: A display unit (36) for driver interaction with the electric motor-driven vehicle (10) is arranged in a surface (40) of the frame (18), characterized in that the surface (38) of the display unit (36) is integrated flush into the surface (40) of the frame (18), so that a plane is formed by an intermediate layer (66) arranged between the display unit (36) and the frame (18).

2. The electric motor driven vehicle (10) according to claim 1, characterized in that The intermediate layer (66) is connected to the housing (52) of the display unit (36) in a material-bonded manner.

3. The electric motor driven vehicle (10) according to claim 1 or 2, characterized in that The intermediate layer (66) is made of an elastic material, in particular a thermoplastic elastomer or silicone.

4. The electric motor driven vehicle (10) according to claim 2 or 3, characterized in that The intermediate layer (66) is designed to be more elastic than the housing (52).

5. An electric motor-driven vehicle (10) according to any one of the preceding claims, characterized in that The intermediate layer (66) is designed to be deformed, in particular compressed, in the assembled state of the display unit (36).

6. An electric motor-driven vehicle (10) according to any one of the preceding claims, characterized in that The intermediate layer (66) is configured as a seal (68) to prevent fluid from penetrating between the frame (18) and the display unit (36).

7. An electric motor-driven vehicle (10) according to any one of the preceding claims, characterized in that The display unit (36) has at least one fastening means (67), in particular a screw or a screw boss (68), and a tolerance compensation element (69), in particular a leaf spring, for fastening in the frame (18).

8. An electric motor-driven vehicle (10) according to any one of the preceding claims, characterized in that The vehicle (10) has a handlebar (44) and a seat (46), wherein a top tube (42) of the frame (18) is arranged between the handlebar (44) and the seat (46), and the display unit (36) is flush-integrated into a surface (40) of the top tube.

9. A display unit (36) comprising a display (50), in particular a touch display (48), and a housing (52) for an electric motor-driven vehicle (10), characterized in that The housing (52) and the display (50) are connected to an intermediate layer (66) in a material-locking manner for flush integration into a frame (18) of the vehicle (10).

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