Stroller

Abstract

The invention relates to a stroller (100) comprising a control device (240), a drive device (209), and an interface device (410), wherein the control device (240) is designed to control the drive device (209) to drive the stroller (100), wherein the interface device (410) is designed to output information relating to an operating state of the drive device (209) to a user of the stroller (100) and / or to receive information from the user.

Description

[0001] stroller

[0002] Description

[0003] State of the art

[0004] Strollers have been known for a long time in a variety of designs. Strollers with motors as the drive or assisted drive are also known in principle, for example, from DE 1817722 U. EP 2332806 A2 discloses a multi-seat stroller with a wheel hub motor as the assisted drive, with the speed being adjusted via a thumb throttle. One difficulty with the solutions proposed in the prior art is that they do not provide any safeguards to prevent misuse of the drive (for example, by a child). The options for using the motor as a brake and the interface between the user and the stroller are also considered in need of improvement.

[0005] Task

[0006] It is an object of this invention to reduce the aforementioned risk. It is a further object of the invention to propose a versatile, cost-effective, and safe stroller and a method for using the same. A further object of the invention is to provide an intuitively usable stroller and a corresponding method.

[0007] Solution

[0008] The object is achieved by a stroller comprising a control device, a drive device and an interface device, wherein the control device is configured to control the drive device for driving the stroller, wherein the interface device is configured to output information relating to an operating state of the drive device to a user of the stroller and / or to receive information from the user.

[0009] The term “stroller” refers to all types of strollers, such as classic strollers, sports strollers, joggers and buggies or similar vehicles that are used to transport babies and small children by pushing them.

[0010] The interface device is therefore in particular an interface between the stroller and the user. The output of information to the user can, for example, be optical and / or acoustic and / or tactile (e.g. by vibration) and preferably relate to a current operating state of the drive device. The receipt of information can preferably be initiated by an input from the user. The input can, for example, be made by approaching or touching, in particular by pressure (e.g. of a certain strength and / or duration), and the information transmitted thereby can relate to a desired operating state or a desired change in the operating state of the drive device. When reference is made to a user, this means a person who is operating the stroller (as opposed to a child in the stroller).

[0011] An operating state refers to information regarding the current state of the stroller. In particular, the operating state can include the current drive mode, battery charge level, current speed, release status, error status, and / or brake activation status.

[0012] By providing an interface device, the operation of the stroller is significantly simplified. The user receives relevant information about the operation of the stroller in a simple manner, which increases both safety and comfort.

[0013] In certain embodiments, the stroller described above can comprise a release device that can selectively assume a release state and a non-release state, and / or an actuating device with a first actuator and / or a second actuator, wherein the first and / or second actuator (each) can selectively assume an actuated state and an unactuated state. The release device enables the targeted release or locking of the stroller, in particular the drive and / or actuating device, thereby increasing safety, since unintentional or unwanted actuation (for example, of the actuating device, for example, by the child) is not necessarily detected. Preferably, a function of the stroller can be released or locked by the release device.In a non-release state, any actuation of the actuation unit or other commands received and / or transmitted do not result in an actual implementation or change of the stroller's (movement) state. The release device can preferably interrupt or override the transmission of corresponding signals.

[0014] In particular, this preferably enables control commands to the stroller to only have a consequence if the release device is in the release state.

[0015] The object is also achieved by a stroller comprising a drive device, a control device, an actuating device and a release device, wherein the actuating device comprises a first actuator and / or a second actuator, wherein the first and / or second actuator (each) can selectively assume an actuated state and an unactuated state, wherein the release device can selectively assume a release state and a non-release state, wherein the control device is configured to control the drive device only to drive (in particular propel) the stroller when the release device is in the release state and when one of the first actuator and the second actuator is in the actuated state.

[0016] The described design prevents the stroller from accidentally accelerating or braking. In particular, it ensures that changes in the stroller's handling can only be made after prior authorization by the release device.

[0017] The object is also achieved by a stroller comprising a drive device, a control device, and an actuating device. The drive device comprises an electric motor. The actuating device comprises a first actuator, the first actuator being able to selectively assume an actuated state and an unactuated state. The control device is configured to control the drive device to brake the stroller when the first actuator is in the actuated state. Braking can be understood here as both driving the stroller in the opposite direction of travel and switching the drive device to dissipate kinetic energy.

[0018] In certain embodiments, the stroller described in the previous paragraph may comprise a release device that can selectively assume a release state and a non-release state and / or an interface device that is configured to output information relating to an operating state of the drive device to and / or receive information from a user of the stroller.

[0019] In general, the stroller may include an on / off switch with which the drive device and / or the interface device and / or the release device can be switched on and off. The on / off switch may be configured as a push-button. Preferably, the release device itself may also be configured as an on / off switch. This means that when the release device is switched off, it cannot be operated to switch between the enabled and disabled states (but can be switched on again).

[0020] In this case, driving by the drive device is to be understood as a state in which the drive device (by applying a force or torque) generally influences a state of motion of the stroller. One possible drive is propulsion, in which the drive device influences the state of motion of the stroller in such a way that the stroller is initially brought from a resting state into a moving state and then an existing movement of the stroller is supported. Propulsion within the meaning of the invention is not synonymous with a "forward" drive, but rather refers to a drive in a constant direction, wherein said direction preferably corresponds to the current direction of movement of the stroller.

[0021] Another possible drive is braking, i.e. counteracting an existing movement of the stroller, possibly until it comes to a standstill. Propulsion and braking are always relative to the existing movement of the stroller (except when propelling from a standstill) - so propulsion can act forwards if the stroller is already moving forwards, but it can also act backwards if the stroller is already moving backwards. Accordingly, braking can counteract a forward or backward movement. A third possible drive is rocking, where the stroller is alternately propelled forwards and backwards - i.e. first propelled in one direction (for example backwards), then braked, then propelled in the other direction, then braked again, then propelled in one direction again, and so on.This results in a predominantly periodic movement, which, on average, does not lead to a shift in the stroller's center of gravity. In this mode, higher drive power therefore corresponds to a stronger (preferably faster or more accelerated) rocking motion.

[0022] In some embodiments, the drive device comprises a motor, in particular an electric motor, and an energy storage device, in particular a battery. The motor can in particular be a brushless DC motor.

[0023] In some versions, the stroller has a child restraint system and / or can be detachably connected to one. For example, the stroller may be a frame only that must first be connected to a child restraint system. The child restraint system can be, for example, a seat unit, a carrycot, or an infant carrier.

[0024] In some embodiments, the stroller comprises at least one push bar, in particular with a handlebar area. The push bar can, for example, comprise a central push bar strut, or a right and a left side strut. In the case of two side struts, these can be connected via a common handlebar area or each comprise its own handlebar area. The handlebar area can be located between the two side struts. The push bar or the side struts are preferably made of metal or rigid plastic, whereby the handlebar area can be covered with leather and / or a soft plastic (such as foam and / or synthetic leather).

[0025] In some versions, the stroller may include at least one wheel. Alternatively or in addition to the wheel, the stroller may also have rollers or runners, for example. Preferably, the stroller includes one or two front wheels and two rear wheels.

[0026] It can be provided that the drive device is arranged at least partially in a lower region, in particular in a lower, rear region of the stroller (in the rear region of the lower section of the lower frame described below). The motor is preferably arranged in or (near) the at least one wheel; for example, the motor can be designed as a hub motor, or the motor can be connected to the at least one wheel, in particular via a drive belt. The at least one wheel preferably comprises a right rear wheel and a left rear wheel, between which the motor can be arranged. Of course, multiple motors can also be provided, for example, one motor per rear wheel. The energy storage device (the battery) can also be arranged, for example, between the rear wheels - for example, on or below a wheel axle or otherwise provided strut of the stroller.

[0027] In some embodiments, the stroller comprises at least one sensor device, namely in particular a wheel movement sensor for detecting a rotation, preferably also a direction of rotation, of the at least one wheel. Of course, multiple wheel movement sensors can also be provided, which can, for example, detect the rotation (possibly including the direction) of one of the wheels each. Alternatively or additionally, the sensor device can be designed as a speed sensor or comprise such a sensor. In particular, the sensor device can also be designed such that both the rotation of the at least one wheel and the speed of the stroller are detected simultaneously.

[0028] In further embodiments, the wheel movement sensor detects the rotation, preferably also the direction of rotation, of the at least one wheel indirectly (alternatively: directly). For this purpose, for example, the motor can comprise a rotor and can preferably be connected to the at least one wheel via a gear and / or a belt, so that the rotation, preferably also the direction of rotation, of the at least one wheel can be detected via a rotation of the rotor. It can be provided that the motor comprises at least one Hall sensor, preferably three Hall sensors, for detecting a position of the rotor, wherein the motor is preferably a brushless DC motor.

[0029] By indirectly detecting rotation, frictional resistance is avoided and reliability is increased, thereby improving the efficiency of the stroller.

[0030] In embodiments, the drive device can selectively drive the stroller in one of at least two modes, wherein one of the modes can be a propulsion mode and / or a rocking mode and / or a braking mode.

[0031] A braking mode is a mode in which the drive system reduces the stroller's kinetic energy. This can be achieved, for example, by driving the stroller in a direction opposite to the direction of movement to reduce the speed. Alternatively, braking mode can also mean generator operation of the drive system, in which kinetic energy is converted into electrical or thermal energy.

[0032] Providing different drive modes enhances the stroller's versatility and usability. In particular, this allows the stroller to be used optimally in every situation.

[0033] In one specific embodiment, the drive device can either drive the stroller forward or backward. In another specific embodiment, the drive device can either drive the stroller forward or brake it. In another specific embodiment, the drive device can either drive the stroller forward or rock it. In yet another specific embodiment, the drive device can either brake or rock the stroller.

[0034] In a preferred specific embodiment, the drive device can selectively drive the stroller forward, backward, or brake it. In another preferred specific embodiment, the drive device can selectively drive the stroller forward, backward, or rock it. In a particularly preferred specific embodiment, the drive device can selectively drive the stroller forward, backward, or brake it or rock it.

[0035] In other specific configurations, the drive system can rock the stroller at different intensities, e.g., gently, normally, or more vigorously. The specific configurations listed in the previous paragraphs can, of course, also be implemented with several different rocking intensities.

[0036] In embodiments, the unactuated state of the first actuator corresponds to a zero position. The first actuator can be preloaded towards the zero position. Additionally or alternatively, the first actuator can be movable from the zero position in a first direction and / or in a second direction, wherein the second direction is preferably opposite to the first direction. Starting from the zero position means a range of small deflections (preferably less than 10%, more preferably less than 5% of the total distance along which the actuator is movable). In particular, this means that the first and second directions are directly opposite each other, at least in the immediate (infinitesimal) vicinity of the zero position. This is not necessarily the case for larger deflections, so that the directions can also approach each other again.

[0037] The preload of the first actuator can be achieved, for example, by means of a spring, in particular a tension spring or a torsion spring.

[0038] The first actuator may include a first stop corresponding to a maximum position of the first actuator in the first direction, and the first actuator may include a second stop corresponding to the zero position or a maximum position of the first actuator in the second direction.

[0039] A zero position of the first actuator should be understood in particular to mean that the control device does not control the drive device to propel and / or brake the stroller when the first actuator is in the zero position.

[0040] A maximum position of the first actuator in the first or second direction can preferably be linked to the control device controlling the drive device for propelling or braking the stroller with the maximum possible drive power or the maximum permissible drive power in the current situation. A maximum permissible drive power in the current situation can be lower than the maximum possible drive power because boundary conditions can be provided that limit the maximum possible drive power, for example, depending on the current speed of the stroller. Whether the drive power has a propulsive or braking effect can depend - as shown in the corresponding exemplary embodiments - on the specific circumstances, for example on whether a current direction of movement of the stroller and the direction associated with the position of the first actuator are in the same direction or opposite.

[0041] In embodiments, the control device can be configured to drive the stroller, in particular the at least one wheel, forwards when the first actuator is moved in the first direction. In this case, a movement in the first direction, at least starting from the zero position of the first actuator, can preferably be substantially a forward movement. Alternatively or additionally, the control device can be configured to drive the stroller, in particular the at least one wheel, backwards when the first actuator is moved in the second direction. In this case, a movement in the second direction, at least starting from the zero position of the first actuator, can preferably be substantially a backward movement. This facilitates intuitive operation of the stroller.

[0042] In embodiments, the controller can be configured to determine a requested drive power, in particular propulsion power, based on the position of the first actuator. The requested drive power can act on the stroller to propel the stroller forward when the first actuator is moved in the first direction starting from the neutral position. Alternatively or additionally, the requested drive power can act on the stroller to propel the stroller backward when the first actuator is moved in the second direction starting from the neutral position.

[0043] In embodiments, the controller can be configured to determine a requested drive power, in particular braking power, based on the position of the first actuator. The requested drive power can act on the stroller to brake the stroller (counteracting a current movement of the stroller) when the first actuator is moved in the first or second direction starting from the zero position.

[0044] In embodiments, the controller can be configured to determine a requested drive power based on the position of the second actuator. The requested drive power can act on the stroller to rock the stroller when the second actuator is in the actuated state. Preferably, a higher actuator level can correspond to a higher requested drive power and thus a stronger rocking action.

[0045] In embodiments, the control device can be configured to control the drive device to propel the stroller forward when the at least one wheel moves forward and the first actuator is moved in the first direction. Alternatively or additionally, the control device can be configured to control the drive device to propel the stroller backward when the at least one wheel moves backward and the first actuator is moved in the second direction.

[0046] In embodiments, the control device can be configured to actuate the drive device to brake the stroller when the at least one wheel moves forward and the first actuator is moved in the second direction and / or when the at least one wheel moves backward and the first actuator is moved in the first direction. This is also considered to be conducive to intuitive operation of the stroller. In particular, it can be provided that the drive device can brake the stroller regardless of whether a release device is present or whether an existing release device is in the release state or in the non-release state. This takes into account the idea that a braking function should be quickly available in some situations, and that, on the other hand, accidental triggering of the braking function is considered less critical.

[0047] In embodiments, the control device can comprise a printed circuit board and / or an integrated circuit. The control device can be connected electrically (in particular by means of a cable) or wirelessly to the drive device and / or the interface device and / or the release device and / or the actuating device. The control device can, for example, be located in spatial proximity to the drive device, in particular to the motor and / or the energy storage device. However, the control device can also be located in spatial proximity to the interface device and / or the release device and / or the actuating device. In this context, spatial proximity should mean that the distance between the nearest sections of the respective components is at most 20 cm or at most 10 cm.

[0048] In embodiments, the actuated state of the first actuator can comprise a plurality of actuator positions. Alternatively or additionally, the actuated state of the second actuator can comprise a plurality of actuator stages. For example, each actuator position can correspond to one (different) of the drive powers already described. Continuous adjustment of the first actuator can be provided; alternatively, at least two and / or a maximum of seven discrete actuator positions can be provided. Likewise, for example, each of the actuator stages of the second actuator can correspond to one (different) of the swing strengths already described. For example, at least two discrete actuator stages and / or a maximum of five discrete actuator stages can be provided. Alternatively, continuous adjustment of the second actuator can also be provided.

[0049] By gradually adjusting the rocking behavior, the mode can be optimally adapted to the needs and alertness level of the child being transported. Furthermore, it is also conceivable to adapt the rocking mode level to other factors such as the battery charge level. Preferably, the control device can also be designed to gradually reset a level originally selected by the second actuator over time in order to allow the child to fall asleep more peacefully and / or to save energy. In a specific embodiment, a discrete number of (e.g., three) actuator levels is provided. The actuator level is selected based on the duration of the second actuator operation. A short operation (e.g.,at most one second) leads to the lowest actuator level (which is preferably associated with the gentlest rocking motion), while a longer actuation leads to higher actuator levels (for example, one actuator level can be increased every second so that with three actuator levels the highest actuator level is selected after two seconds). In this embodiment, it can be provided that a particularly long actuation (in the above example with three actuator levels and changes every second, e.g. an actuation of more than three seconds) results in the rocking mode not being activated and the release device switching back to non-release mode. It can also be provided that the currently selected actuator level is signaled by the interface device, in particular visually.

[0050] In embodiments, the release device can be actuated, preferably manually, to transition from the non-release state to the release state. In particular, the transition can be effected by actuating a button described in more detail below. It can be provided that actuation of the release device for a relatively short time (e.g., for a maximum of one second) leads to the described change between the non-release state and the release state, and that a relatively long actuation (e.g., for more than one second) leads to the switching on or off of the affected components (the drive device and / or the interface device and / or the release device).

[0051] In embodiments, the release device can be automatically transferred back to the non-release state after being transferred to the release state. The release device can preferably remain in the release state for a predetermined time after being transferred to the release state. Alternatively or additionally, it can be provided that the release device is not automatically transferred from the release state to the non-release state as long as one of the first actuator and the second actuator is in the actuated state.

[0052] An automatic return to the non-release state prevents accidental forgetting to leave the pushchair in the release state. In particular, this prevents or reduces the risk of an operator leaving without having switched to the non-release state, allowing the child to operate the actuator and thereby drive the stroller.In a specific embodiment, the release device can be configured such that, after being transferred into the release state, it is automatically transferred back into the non-release state after a predetermined time, unless the first or second actuator is actuated within the predetermined time, and that, if the first actuator has been actuated within the predetermined time, the release device is automatically transferred back into the non-release state as soon as the first and second actuators have not been actuated for a defined time, in particular for the predetermined time. If, on the other hand, the second actuator has been actuated within the predetermined time, it can be provided that the release device is only transferred to the non-release state after the second actuator has been actuated again, if necessary.only if, after the second actuator has been actuated again, the first and second actuators are no longer actuated for a defined time, in particular for the predetermined time.

[0053] The predetermined time can be a period of several seconds. On the one hand, the predetermined time should be long enough to allow a user sufficient time to operate the first or second actuator after transferring the release device, or to allow a user to use the hand they normally use to operate the first actuator for another brief operation. On the other hand, the predetermined time should be short enough to minimize the risk of the stroller's drive being accidentally triggered (e.g., because a user has operated the release device but is then distracted, allowing a child in the stroller to operate the first actuator). For example, the predetermined time can be at least 1 second, at least 2 seconds, or at least 3 seconds.Additionally or alternatively, the specified time may be no more than 10 seconds, no more than 7 seconds, or no more than 5 seconds.

[0054] In another specific embodiment, the release device can be in the release state as long as it is actuated (in the case of a configuration with a button, for example, as long as the button is pressed by the user), and return to the non-release state as soon as it is no longer actuated (in the case of the button, as soon as the user no longer presses the button).

[0055] In embodiments, the transition of the release device between the release state and the non-release state can comprise an electrical process. For example, the transition can comprise a process in which an electrical circuit is opened or closed, and / or the transition can comprise a process in which a resistance or capacitance changes. In embodiments, the release state and the non-release state can be externally indistinguishable for a user. Alternatively or additionally, the release device can comprise a button, in particular a membrane button and / or a conductive rubber button, or a touchpad.

[0056] In a specific embodiment, the release device comprises a button, for example a membrane key. By pressing the button, the release device is transferred to the release state and remains in the release state for a few seconds even after the button is released. The pressed and non-pressed states of the button can possibly be differentiated by the user haptically or visually. However, since the button is no longer pressed after being released, but is still in the release state, the release state and the non-release state cannot be differentiated in this way. However, it can be provided that - for example as a component of the interface device - a display is provided which shows whether the release device is in the release state or in the non-release state. Specifically, the display can comprise a light source, in particular an LED. The light source can, for example,light up constantly when the release device is in the release state, and / or light up pulsatingly or not light up when the release device is in the non-release state.

[0057] The different lighting modes (e.g., constant light, non-light, pulsating) allow the amount of information displayed by a single light source to be increased. This reduces the total number of light sources required, thus reducing costs and improving clarity.

[0058] In embodiments, the first actuator and / or the second actuator may be manually operable to transition from the unactuated state to the actuated state.

[0059] In embodiments, the first actuator can be automatically returned to the unactuated state after being transferred to the actuated state, preferably as soon as the first actuator is no longer actively held in the actuated state by the user.

[0060] In embodiments, the transition of the first actuator between the actuated state and the unactuated state may comprise a mechanical process, in particular a translation and / or a rotation. Alternatively or additionally, the first actuator may comprise a return spring. In embodiments, the first actuator may comprise a lever, a sliding element, and / or a rotary element. Alternatively or additionally, the first actuator may be electrically and / or wirelessly connected to the drive device and / or the control device.

[0061] In a specific embodiment, the first actuator can be designed as a rotating element and can be rotatably mounted on the stroller, for example, on the push bar, particularly in its handle area, and can also comprise a torsion spring. The first actuator can then be rotated against the force of the torsion spring and thus actuated, whereby the torsion spring forces the first actuator back to its neutral position when the first actuator is no longer actuated.

[0062] In some embodiments, the respective actuation of the release device and the first actuator can be possible independently of one another. This means that the user's action required for actuation should fundamentally be independent of the state of the other element. For example, actuation of the first actuator should not be physically blocked if the release device is in the non-release state. However, whether actuation also leads to a transfer of the state of the actuated element can certainly depend on the state of the other element (or on other circumstances). For example, in the above example, it would be possible for the first actuator to be actuated when the release device is in the non-release state, but this actuation cannot lead to the stroller being propelled forward by the drive device.

[0063] In some embodiments, the stroller may include a brake, preferably a parking brake. The brake may be switchable between an active state, in which it brakes the stroller, and an inactive state. In general, the brake may be, for example, a deceleration brake, such as a friction brake of a suitable design (e.g., a shoe brake or disc brake). However, it is preferably a parking brake, in particular such that, when the brake is activated, a component of the brake engages with a portion of the wheel. Of course, the stroller may also have both a deceleration brake and a parking brake.

[0064] In a specific embodiment, the stroller has a parking brake comprising a pin, and the at least one wheel has a recess. The pin can engage positively in the recess; however, the recess is preferably an elongated hole in which the pin has play such that rotation of the at least one wheel—limited by the length of the elongated hole—is possible to a limited extent.

[0065] In some embodiments, the interface device can output information optically. For this purpose, the interface device can comprise at least one light source, preferably embodied as an LED. Preferably, the information is output with an information content of at least 2 bits or at least 4 bits, and / or at most 20 bits or at most 10 bits. This also promotes intuitive understanding and use of the interface device.

[0066] In a specific embodiment, the interface device can comprise 6 LEDs, one LED being assigned to the release device. The LED assigned to the release device is designed to indicate the state of the release device (release state or non-release state). Four of the other 5 LEDs can have a context-dependent meaning: Generally, they indicate the charge status of the energy storage device (the battery). However, in a situation in which a user activates the rocking mode (by actuating the second actuator) and selects the actuator level (by the duration of the actuation), they indicate the actuator level (and thus the selected rocking strength). The remaining LED can be used to indicate successful actuation of the on / off switch - for this purpose, this LED can, for example, flash briefly once or several times.

[0067] In embodiments, the interface device can receive information via a button, in particular a membrane button and / or a conductive rubber button, or a touchpad.

[0068] In a specific embodiment, the interface device comprises one or more buttons, for example, membrane buttons. When a user presses one of the buttons, the interface device receives specific information about a desired change in the operating state of the drive device, as described elsewhere.

[0069] In embodiments, the interface device may comprise the release device and / or the actuating device, in particular the first actuator and / or the second actuator.

[0070] In embodiments, the operating state for which the interface device can output information may include a charge status of the energy storage device, and / or a set drive level of the drive device, and / or a current state, namely release state or non-release state, of the release device, and / or a basic status, namely switched on or switched off, and / or an error code.

[0071] In a specific embodiment, an error code can be designed such that at least one light source flashes and at least one light source lights up continuously to signal a (specific) error.

[0072] Such information provides the user with an overview of the essential aspects of the stroller, thereby increasing its user-friendliness and operational safety.

[0073] In embodiments, the operating state for which the interface device can receive information may include a (desired) change in the state of the enabling device, and / or a (desired) change in the set drive level, and / or a (desired) change in the basic status, and / or a (desired) change in the state of the second actuator.

[0074] In a specific embodiment, it can be provided that a change in the status of the release device occurs through a brief actuation of the release device, and that (as an additional function of the release device) a long actuation of the release device leads to a change in the basic state (switched on or switched off). "Short" can mean shorter than a predetermined time, and "long" can mean longer than the predetermined time. The predetermined time can be, for example, between 0.5 seconds and 3 seconds, for example, approximately one second or approximately two seconds.

[0075] Preferably, the interface device and / or the release device and / or the first actuator and / or the second actuator are provided in or on the slide, in particular in or on the handle area. This simplifies the use of the corresponding elements by the user and further enhances ergonomics.

[0076] In some embodiments, the stroller may comprise a lower frame, wherein the at least one wheel is preferably arranged on a lower portion of the lower frame (in particular in a rear region of the lower portion). Alternatively or additionally, the pusher is movably connected to the lower frame, in particular rotatably or displaceably.

[0077] In some embodiments, the stroller comprises a front wheel frame section and a rear wheel frame section, wherein preferably the at least one wheel is a rear wheel and is arranged at a lower and / or rear end of the rear wheel frame section. Preferably, at least one front wheel is arranged at a front and / or lower end of the front wheel section; alternatively or additionally, the front wheel frame section and the rear wheel frame section can be components of the lower frame or form the lower frame. Preferably, the front wheel frame section and the rear wheel frame section are rotatably connected to one another via a first joint. Alternatively or additionally, the pusher can be rotatably connected to at least one of the front wheel frame section and the rear wheel frame section via a second joint, or the pusher can be slidably connected to the front wheel frame section.The first and second joints can also be identical to each other, so that the front wheel frame section, rear wheel frame section and slider are connected to each other in a common joint.

[0078] Specifically, the front wheel frame section may comprise a right and a left side segment, which may be connected to one another by one or more transverse segments. The rear wheel frame section may also comprise a right and a left side segment, which may also be connected to one another by one or more transverse segments. The first and / or second joint may comprise a right and a left joint section, which may be connected to one another via a transverse segment.

[0079] In some embodiments, the stroller has a second adapter for connecting to a child restraint system. The second adapter is preferably arranged below and / or in front of the first adapter, in particular near the at least one front wheel and / or in a lower / front region of the front wheel frame. The second adapter can comprise a right-side and a left-side adapter element, each of which can preferably have a coupling section.

[0080] In some embodiments, the first adapter is adjustable between an upper and / or rear position and a lower and / or front position. For this purpose, the first adapter can be slidably mounted on the side struts of the slider. Alternatively or additionally, the second adapter can be transferable between a use position and a stowed position, wherein the coupling section preferably points upwards in the use position. The transfer of the second adapter between the use position and the stowed position can be effected by rotating, folding and / or sliding, preferably in such a way that the second adapter projects further upwards in the use position than in the stowed position. The transfer can be effected for the second adapter as a whole or separately for each of the two adapter elements.

[0081] The lower frame can also be designed like a tub or box, and the push section can be designed like a drawbar. In this case, the entire stroller can be designed like a handcart.

[0082] In embodiments, it may be provided that the control device only triggers the drive device to initiate driving of the stroller in a rocking mode if the first actuator is in the unactuated state while the second actuator is actuated. This can prevent an unwanted mode from being activated in a situation where the user's wishes are unclear.

[0083] In embodiments, it can be provided that the control device drives the drive device to drive the stroller in a rocking mode only when a rocking precondition is met. The rocking precondition preferably comprises that the at least one wheel can move in any direction by at most a predetermined proportion of a wheel revolution, wherein the movement of the at least one wheel is further preferably limited by a stop. Alternatively or additionally, the rocking precondition preferably comprises that the brake is in the active state, wherein the brake is further preferably a parking brake which allows the at least one wheel a predetermined amount of play even in the active state. Safe operation of the stroller can be achieved through the rocking precondition.

[0084] Basically, a brake is understood to be a separate braking element that mechanically secures at least one wheel. In particular, the drive system should not be considered a brake in this context, even if it is in braking mode.

[0085] An active state of the brake is a state in which the brake prevents, preferably mechanically, unrestricted rotation, preferably a rotation of more than 180°, of at least one wheel. It can be provided that a predetermined amount of play is nevertheless permitted by the brake, preferably rotations of the wheel of no more than 90°, more preferably no more than 45°, more preferably no more than 20°. In this way, the stroller is permanently secured against rolling away, but can still be operated in rocking mode, since the brake allows a certain back-and-forth movement.

[0086] In embodiments, the release device can be transferred from the release state to the non-release state if the swing precondition is not met during or after the second actuator is actuated.

[0087] In a specific embodiment, the stroller's drive system comprises an electric motor with (for example, three) Hall sensors for detecting the position of the electric motor's rotor. Furthermore, the stroller includes a parking brake with a slotted hole into which a pin can engage, with the ends of the slotted hole serving as stops for the pin. If a user now selects one (of several) rocking modes (by actuating the second actuator), the electric motor begins to drive the stroller in one direction. Once the brake is activated, the pin strikes one end of the slotted hole after at least one wheel has rotated accordingly, so that the at least one wheel can only rotate to a limited extent.The motor's Hall sensors register that the rotor can only rotate to a limited extent (generally, a gear ratio can be provided such that one full rotation of the rotor results in less than one full rotation of at least one wheel). This fulfills the rocking precondition, and the electric motor begins to drive the stroller in the other direction. Now, after the corresponding rotation of at least one wheel), the pin strikes the other end of the slot, so that the rocking precondition is still fulfilled. A second rocking cycle is then started, and so on.

[0088] In general, it can be provided to check the rocking precondition in each half-cycle and for each driven wheel separately and to stop the drive if the rocking precondition is not met.

[0089] In embodiments, the control device can only drive the drive device to propel the stroller in a propulsion mode if a propulsion precondition is met. The propulsion precondition preferably includes the wheel movement sensor detecting a rotation of the at least one wheel, which rotation must preferably correspond to the controlled propulsion direction. Alternatively or additionally, the propulsion precondition preferably includes the second actuator being in the unactuated state. This can effectively prevent, for example, a child carried in the stroller from starting the stroller's propulsion, even if the release device is in the release state because a user actuated it and was then distracted. Overall, safety is further increased by the propulsion preconditions.

[0090] The object is further achieved by a method for operating a stroller, wherein the method comprises that a control device of the stroller controls a drive device of the stroller to drive the stroller, wherein an interface device of the stroller outputs information relating to an operating state of the drive device, and / or the interface device receives information relating to an operating state of the drive device.

[0091] The object is also achieved by a method for operating a stroller, wherein the method comprises that a release device of the stroller is transferred from a non-release state to a release state, and a first actuator or a second actuator of an actuating device of the stroller is transferred from an unactuated state to an actuated state, and a control device of the stroller controls a drive device of the stroller for driving (in particular propelling) the stroller.

[0092] The object is also achieved by a method for operating a stroller, wherein the method comprises that a first actuator of an actuating device of the stroller is transferred from an unactuated state to an actuated state, and a control device of the stroller controls an electric motor of a drive device of the stroller for braking the stroller.

[0093] Further embodiments and in particular the attached schematic figures are explained below.

[0094] Fig. 1 shows a stroller according to the invention.

[0095] Fig. 2 shows a section of a stroller according to the invention.

[0096] Fig. 3 shows a highly schematic configuration of a stroller according to the invention.

[0097] Fig. 4A shows a highly schematic view of an interface device of a stroller according to the invention. Fig. 4B shows a highly schematic view of the operating device of a stroller according to the invention.

[0098] Fig. 5 shows a section of a stroller according to the invention.

[0099] Fig. 6 shows a section of a stroller according to the invention.

[0100] Fig. 7 and Fig. 8A to 8D each show parts of an interface device of a stroller according to the invention.

[0101] Fig. 9 shows a stroller according to the invention with child-carrying devices.

[0102] Fig. 10 shows a motor of a stroller according to the invention.

[0103] Figure 1 shows a stroller 100 according to the invention with a pusher 120, a front wheel frame section 130, and a rear wheel frame section 140. The pusher 120 has right and left side struts 121 and a handle area 122 designed as a transverse segment with an actuating device 225. On the inside of the side struts 121, rails 102 are provided, on which first adapters 170 are slidably arranged. The first adapters are located in a lower position in the figure. The front wheel frame section 130 has right and left side segments 131 and a transverse segment 132. Second adapters 180 are provided on the inside of the side segments 131 of the front wheel frame section 130.At the front, lower end of the front wheel frame section 130, two wheels 190 designed as front wheels 191 are arranged, while an upper, rear end of the front wheel frame section is rotatably connected to a lower, front end of the slider via a first joint 150. The rear wheel frame section 140 has right and left side segments 141 and a transverse segment 142 and is rotatably connected to the front wheel frame section 130 at its front, upper end via a second joint 160. At a lower, rear end of the rear wheel frame section, wheels 190 designed as rear wheels 192 are arranged, each of the rear wheels 192 being driven by a drive device 209 designed as a motor 210. An energy storage device 220 designed as a battery is arranged on the transverse segment 142.

[0104] Figure 2 shows the rear, lower end of the rear wheel frame section 140 of the stroller 100. The energy storage device 220 is arranged on the cross strut 142 between the left and right side struts 141 of the rear, lower end of the rear wheel frame section 140. A motor 210 is arranged on each of the two rear wheels 192 (with only one motor 210 or a drive device 209 being visible in this view, while the other motor is largely concealed). A parking brake 101 is also arranged on one rear wheel 192 (in particular, an operating element of the parking brake can be seen), with which the stroller 100 can be secured against unintentional rolling away when not in use.

[0105] Figure 3 shows, highly schematically, an exemplary configuration of the stroller 100 according to the invention. A control device 240 can be connected electrically or wirelessly to an actuating device 225, a release device 450, a drive device 209, and a sensor device 250. The drive device 209 can be electrically connected to an energy storage device 220. The control device 240 can be configured to receive and / or send data from the sensor device 250, e.g., the speed and / or direction of travel of the stroller 100 and / or the direction of rotation of at least one wheel 190, and / or from the actuating device 225, e.g., its position, and / or from the release device, e.g., its state, and / or from the drive device 209.

[0106] Figure 4A shows a highly schematic view of an interface device 410 comprising an actuating device 225 and a releasing device 450.

[0107] Figure 4B shows a highly schematic illustration of an actuating device 225 comprising a first actuator 226 and a second actuator 227.

[0108] Figure 5 shows the pusher section 120 of a stroller 100 according to the invention, in particular its handle area 122. An interface device 410, in particular a first actuator 226, a second actuator 227, and a release device 450, are arranged in the handle area 122. The release device 450 and the second actuator 227 are not shown in detail.

[0109] In Figure 6, the interface device 410 from Figure 5 is shown from a different perspective, so that in particular the first actuator 226 and the handle area 122 can be seen from below. The first actuator 225 comprises a fastening section 234 via which the first actuator 226 is pivotably (or rotatably) connected to the underside of the handle area 122 about a rotation axis 233. Starting from the fastening section 234, a first actuating section 231 extends backwards (at the top in the figure) and a second actuating section 232 extends forwards (at the bottom in the figure). A rotation range of the first actuator 226 is limited by a first stop 235 and a second stop 236. Figure 7 shows sections of an interface device 410 in a handle area 122 in a specific embodiment. In particular, a release device 450 designed as a button 451 and a second actuator 227 designed as a button 228 can be seen.Between the release device 450 and the second actuator 228, five light sources 411 designed as LEDs can be seen, and a light source 411 is also provided at the position of the release device 450.

[0110] Figures 8A - 8D each show sections of an interface device with a release device 450, a second actuator 228 and six lighting means 411 (analogous to Figure 7).

[0111] In Figure 8A, the leftmost of the five light sources 411 arranged between the release device 450 and the second actuator 228 is illuminated. The illumination is indicated in the figure by the corona-shaped rays. It signals to the user that a basic state (switched on or off) has been successfully changed by pressing the button 451 or the release device 450 for a correspondingly long time. The illumination of the light source in this position can generally be time-limited (per successful transition), for example, to less than approximately one second or less than approximately half a second. Likewise, the illumination can generally also be configured as a flashing, for example, as three or five flashes.

[0112] In Figure 8B, the light source 411 associated with the release device 450 pulsates. This is indicated graphically by the arc segments arranged next to one another. The pulsating light source 411 alerts the user that the release device 450 is in the non-release state and that actuation of the release device 450 is necessary to transfer it to the release state. The pulsation can generally be rather slow, for example, with a frequency of two seconds. It can generally occur continuously, i.e., until the release device has been transferred to the release state or until the default state has been changed to off.

[0113] Figure 8C shows the three middle lamps 411 of the five arranged between the release device 450 and the second actuator 228 illuminated. The lamp 411 assigned to the release device 450, however, does not illuminate or pulsate. This means that the release device 450 is in the release state, and that the energy storage device 220 is not fully charged, but still largely charged. A fully charged energy storage device 220 would be present if the rightmost lamp 411 were also illuminated. A further depleted energy storage device would be indicated by a successive decrease in the number of illuminated lamps 411, such that more and more lamps 411, viewed from the right, go out.In general, a number of the four lamps on the right corresponding to the charging status of the energy storage device (in particular always the leftmost of these lamps) can be illuminated continuously as long as the release device is in the release status and the second actuator is not actuated.

[0114] In Figure 8D, the two rightmost lamps 411 are shown illuminated. This signals a moderate rocking mode during the (held) actuation of the second actuator 227. A gentle rocking mode would be signaled by only the rightmost lamp 411 illuminating, while a more intense rocking mode would be signaled by the three rightmost lamps illuminating. In general, a number of the three rightmost lamps corresponding to the selected rocking mode (in particular, the rightmost lamps) can be continuously illuminated as long as the second actuator is held actuated.

[0115] The features described in connection with Figures 8A to 8D can all be implemented together, but in general it is also possible to implement them only partially.

[0116] Figure 9 shows a stroller according to the invention with two child-carrying devices 103. In general, the invention can of course also be implemented with strollers with only one child-carrying device and / or with differently designed child-carrying devices.

[0117] Figure 10 shows the motor 210, namely an electric motor, of a stroller according to the invention. The motor 210 comprises a rotor 211, a stator 212, and three wheel motion sensors 251 designed as Hall sensors for detecting the position of the rotor 211.

[0118] At this point, it should be noted that all parts described above, viewed individually and in any combination, particularly the details shown in the drawings, are claimed as essential to the invention. Modifications to these are familiar to those skilled in the art.

[0119] Furthermore, it is pointed out that the broadest possible scope of protection is sought. In this respect, the disclosure contained in the claims can also be clarified by features that are described with further features (even without these further features being mandatory). It is explicitly pointed out that parentheses and the term "in particular" are intended to emphasize the optionality of features in the respective context (which does not mean, conversely, that without such identification, a feature is to be considered mandatory in the corresponding context). The term "element / element" is preferably intended to identify a coherent structure (or assembly), which in turn can be connected to at least one other structure (to form a possibly integral and / or inherently immobile overall structure) or can be delimited from all other structures.

[0120] At least one of the above tasks is further solved in particular by one or more of the following (in particular independent) aspects, which can optionally also be combined with one or more of the above aspects.

[0121] Aspect 1 Stroller (100) comprising a control device (240), a drive device (209) and an interface device (410), wherein the control device (240) is configured to control the drive device (209) to drive the stroller (100), wherein the interface device (410) is configured to output information relating to an operating state of the drive device (209) to a user of the stroller (100) and / or to receive information from the user.

[0122] Aspect 2 Stroller (100) according to aspect 1, wherein the stroller (100) comprises: a release device (450) which can selectively assume a release state and a non-release state, and / or an actuating device (225) with a first actuator (226) and / or a second actuator (227), wherein the first and / or second actuator (226, 227) (each) can selectively assume an actuated state and an unactuated state.

[0123] Aspect 3 Stroller (100), in particular according to aspect 1 or 2, comprising a drive device (209), a control device (240), an actuating device (225) and a release device (450), wherein the actuating device (225) comprises a first actuator (226) and / or a second actuator (227), wherein the first and / or second actuator (226, 227) (each) can selectively assume an actuated state and an unactuated state, wherein the release device (450) can selectively assume a release state and a non-release state, wherein the control device (240) is configured to control the drive device (209) to drive (in particular propel) the stroller (100) when the release device (450) is in the release state and when the first actuator (226) and / or the second actuator (227) is in the actuated state.

[0124] Aspect 4 Stroller (100), in particular according to aspect 1, 2 or 3, comprising a drive device (209), a control device (240), an actuating device (225), at least one wheel (190) and a wheel movement sensor (251), wherein the actuating device (225) comprises a first actuator (226), wherein the first actuator (226) can selectively assume an actuated state and an unactuated state, wherein the control device (240) is configured to control the drive device (209) to drive the stroller (100) when the wheel movement sensor (251) detects a rotation of the at least one wheel (190) and when the first actuator (226) is in the actuated state.

[0125] Aspect 5 Stroller (100), in particular according to one of the preceding aspects, comprising a drive device (209), a control device (240) and an actuating device (225), wherein the drive device (209) comprises an electric motor, wherein the actuating device (225) comprises a first actuator (226), wherein the first actuator (226) can selectively assume an actuated state and an unactuated state, wherein the control device (240) is configured to control the drive device (209) to brake the stroller (100) when the first actuator (226) is in the actuated state.

[0126] Aspect 6 Stroller (100) according to one of the preceding aspects, wherein the drive device (209) comprises a motor (210), in particular an electric motor, and an energy storage device (220), in particular a battery.

[0127] Aspect 7 Stroller (100) according to one of the preceding aspects, wherein the stroller (100) has a child-carrying device (103) and / or can be detachably connected to such a device, and / or wherein the stroller (100) comprises at least one pusher (120), in particular with a handle area (122), and / or wherein the stroller (100) comprises at least one wheel (190).

[0128] Aspect 8 Stroller (100) according to one of the preceding aspects, wherein the stroller (100) comprises at least one wheel movement sensor (251) for detecting a rotation, preferably also a direction of rotation, of the at least one wheel (190) according to aspect 7.

[0129] Aspect 9 Stroller (100) according to one of the preceding aspects, wherein the wheel movement sensor (251) according to aspect 8 indirectly detects the rotation, preferably also the direction of rotation, of the at least one wheel (190), wherein preferably the motor (210) according to aspect 6 comprises a rotor (211) and further preferably is connected to the at least one wheel (190) via a gear and / or a belt, so that the rotation, preferably also the direction of rotation, of the at least one wheel (190) can be detected via a rotation of the rotor (211).

[0130] Aspect 10 Stroller (100) according to one of the preceding aspects, wherein the motor (210) preferably according to aspect 6 comprises at least one Hall sensor for detecting a position of the rotor (211), preferably according to aspect 9, wherein preferably the motor (210) is a brushless DC motor.

[0131] Aspect 11 Stroller (100) according to one of the preceding aspects, wherein the drive device (209) can selectively drive the stroller (100) in one of at least two modes, wherein preferably one of the modes is a propulsion mode and / or one of the modes is a rocking mode and / or one of the modes is a braking mode.

[0132] Aspect 12 Stroller (100) according to one of the preceding aspects, wherein the unactuated state of the first actuator (226) corresponds to a zero position, wherein the first actuator (226) is preferably prestressed towards the zero position and / or wherein the first actuator (226) is movable in a first direction starting from the zero position, and / or wherein the first actuator (226) is movable in a second direction starting from the zero position, which is preferably opposite to the first direction.

[0133] Aspect 13 Stroller (100) according to one of the preceding aspects, wherein the control device (240) is configured to drive the stroller (100), in particular the at least one wheel (190) according to aspect 7, forwards when the first actuator (226) is moved from the zero position in the first direction, wherein further preferably a movement in the first direction, at least starting from the zero position of the first actuator (226), is substantially a forward movement and / or wherein the control device (240) is configured to drive the stroller (100), in particular the at least one wheel (190) according to aspect 7, backwards when the first actuator (226) is moved in the second direction, wherein further preferably a movement in the second direction, at least starting from the zero position of the first actuator (226), is substantially a backward movement.

[0134] Aspect 14 Stroller (100) according to one of the preceding aspects, in particular according to aspect 11, wherein the control device (240) is designed to determine a requested drive power based on the position of the first actuator (226), wherein: a first mode of the at least two modes is a propulsion mode in which the requested drive power acts on the stroller (100) to propel the stroller (100) forward when the first actuator (226) is moved in the first direction starting from the neutral position, and / or a second mode of the at least two modes is a propulsion mode in which the requested drive power acts on the stroller (100) to propel the stroller (100) backward when the first actuator (226) is moved in the second direction starting from the neutral position.

[0135] Aspect 15 Stroller (100) according to one of the preceding aspects, wherein the control device (240) is designed to determine a requested drive power based on the position of the first actuator (226), wherein the requested drive power acts on the stroller (100) to brake the stroller (100) when the first actuator (226) is not in the zero position.

[0136] Aspect 16 Stroller (100) according to one of the preceding aspects, in particular according to aspect 11, wherein the control device (240) is designed to determine a requested drive power based on the position of the second actuator (227), wherein a third mode of the at least two modes is a rocking mode in which the requested drive power acts on the stroller (100) in order to rock the stroller (100) when the second actuator (227) is in the actuated state, wherein the second actuator preferably has a plurality of levels, wherein further preferably a higher actuator level corresponds to a higher requested drive power.

[0137] Aspect 17 Stroller (100) according to one of the preceding aspects, in particular according to aspect 3, wherein the control device (240) is configured to control the drive device (209) to propel the stroller (100) forward, preferably only when the at least one wheel (190) moves forward and the first actuator (226) is moved in the first direction, and / or wherein the control device (240) is configured to control the drive device (209) to propel the stroller (100) backward, preferably only when the at least one wheel (190) moves backward and the first actuator (226) is moved in the second direction.

[0138] Aspect 18 Stroller (100) according to one of the preceding aspects, in particular according to aspect 5, wherein the control device (240) is configured to control the drive device (209) for braking the stroller (100) when the at least one wheel (190) moves forward and the first actuator (226) is moved in the second direction and / or when the at least one wheel (190) moves backward and the first actuator (226) is moved in the first direction.

[0139] Aspect 19 Stroller (100) according to one of the preceding aspects, wherein the control device (240) comprises a printed circuit board (242) and / or an integrated circuit (243).

[0140] Aspect 20 Stroller (100) according to any one of the preceding aspects, wherein the actuated state of the first actuator (226) comprises a plurality of actuator positions and / or wherein the actuated state of the second actuator (227) comprises a plurality of actuator stages.

[0141] Aspect 21 Stroller (100) according to one of the preceding aspects, wherein the release device (450) is operable, preferably manually, to be transferred from the non-release state to the release state.

[0142] Aspect 22 Stroller (100) according to one of the preceding aspects, wherein the release device (450) is automatically transferred back into the non-release state after being transferred into the release state, wherein preferably: the release device (450) remains in the release state for a predetermined time after being transferred into the release state, and / or the release device (450) is not automatically transferred from the release state to the non-release state as long as one of the first actuator (226) and the second actuator (227) is in the actuated state.

[0143] Aspect 23 Stroller (100) according to any one of the preceding aspects, wherein the transfer of the release device (450) between the release state and the non-release state comprises an electrical process.

[0144] Aspect 24 Stroller (100) according to one of the preceding aspects, wherein the release state and the non-release state are externally indistinguishable for a user, and / or wherein the release device (450) comprises a button (451), in particular a membrane button and / or a conductive rubber button, or a touchpad.

[0145] Aspect 25: Stroller (100) according to one of the preceding aspects, wherein the first actuator (226) and / or the second actuator (227) can be manually actuated to be transferred from the unactuated state to the actuated state. Aspect 26: Stroller (100) according to one of the preceding aspects, wherein the first actuator (226) is automatically transferred back to the unactuated state after being transferred to the actuated state, preferably as soon as the first actuator (226) is no longer actively held in the actuated state.

[0146] Aspect 27 Stroller (100) according to one of the preceding aspects, wherein the transfer of the first actuator (226) between the actuated state and the unactuated state comprises a mechanical process, in particular a translation and / or a rotation, and / or wherein the first actuator (226) comprises a return spring (260).

[0147] Aspect 28 Stroller (100) according to one of the preceding aspects, wherein the first actuator (226) comprises a lever, a sliding element and / or a rotating element, and / or wherein the first actuator (226) is electrically and / or wirelessly connected to the drive device (209) and / or the control device (240).

[0148] Aspect 29 Stroller (100) according to one of the preceding aspects, wherein the respective actuation of the release device (450) and the first actuator (226) is possible independently of one another.

[0149] Aspect 30 Stroller (100) according to one of the preceding aspects, wherein the stroller (100) comprises a brake, preferably a parking brake (101), wherein the brake can be switched between an active state in which it brakes the stroller (100) and an inactive state.

[0150] Aspect 31 Stroller (100) according to one of the preceding aspects, wherein the interface device (410) can output information optically, in particular by means of at least one illuminant (453), preferably LED, preferably with an information content of 2 to 20 bits.

[0151] Aspect 32 Stroller (100) according to one of the preceding aspects, wherein the interface device (410) can receive information via a button, in particular a membrane button and / or a conductive rubber button, or a touchpad, preferably via the button (451) and / or the touchpad according to aspect 24.

[0152] Aspect 33 Stroller (100) according to one of the preceding aspects, wherein the interface device (410) comprises the release device (450) and / or the first actuator (226) and / or the second actuator (227). Aspect 34 Stroller (100) according to one of the preceding aspects, wherein the operating state for which the interface device (410) can output information comprises: a charge status of an energy storage device (220), in particular according to aspect 6, and / or a set drive level of the drive device (209), and / or a current state, namely release state or non-release state, of the release device (450), and / or a basic status, namely switched on or switched off, and / or an error code.

[0153] Aspect 35 Stroller (100) according to one of the preceding aspects, wherein the operating state for which the interface device (410) can receive information comprises: a change in the state of the release device (450), and / or a change in the set drive level, and / or a change in the basic status, and / or a change in the state of the second actuator (227).

[0154] Aspect 36 Stroller (100) according to one of the preceding aspects, wherein the interface device (410) and / or the release device (450) and / or the first actuator (226) and / or the second actuator (227) are provided in or on a slider (120), preferably according to aspect 7, in particular in or on the handle area (122).

[0155] Aspect 37 Stroller (100) according to one of the preceding aspects, wherein the stroller (100) comprises a lower frame, wherein preferably at least one wheel (190), preferably according to aspect 7, is arranged on a lower portion of the lower frame, and / or wherein a pusher (120), preferably according to aspect 7, is movably, in particular rotatably or displaceably, connected to the lower frame.

[0156] Aspect 38 Stroller (100) according to one of the preceding aspects, wherein the control device (240) controls the drive device (209) to initiate driving of the stroller (100) in a rocking mode, preferably in the rocking mode according to aspect 11, only when the first actuator (226) is in the unactuated state.

[0157] Aspect 39 Stroller (100) according to one of the preceding aspects, wherein the control device (240) drives the drive device (209) to drive the stroller (100) in a rocking mode, preferably in the rocking mode according to aspect 11, only when a rocking precondition is met, wherein the rocking precondition preferably comprises: the at least one wheel (190), preferably according to aspect 7, can move in any direction by at most a predetermined proportion of a wheel revolution, wherein the movement of the at least one wheel (190) is further preferably limited by a stop, and / or a brake, preferably according to aspect 30, is in the active state, wherein further preferably the brake is a parking brake (101) which allows the at least one wheel (190), preferably according to aspect 7, a predetermined amount of play even in the active state.

[0158] Aspect 40 Stroller (100) according to one of the preceding aspects, in particular according to aspect 39, wherein the release device (450) is transferred from the release state to the non-release state if the rocking precondition is not met during or after the second actuator (227) is actuated.

[0159] Aspect 41 Stroller (100) according to one of the preceding aspects, wherein the control device (240) drives the drive device (209) to drive the stroller (100) in a propulsion mode, preferably in the propulsion mode according to aspect 11, only when a propulsion precondition is met, wherein the propulsion precondition preferably comprises: a wheel movement sensor (251), preferably according to aspect 8, detects a rotation of the at least one wheel (190), and / or the second actuator (227) is in the unactuated state.

[0160] 42 Method for operating a stroller (100), wherein the stroller is preferably designed according to aspect 1, wherein the method comprises that a control device (240) of the stroller (100) controls a drive device (209) of the stroller (100) for driving the stroller (100), wherein an interface device (410) of the stroller (100) outputs information relating to an operating state of the drive device (209), and / or the interface device (410) receives information relating to an operating state of the drive device (209).

[0161] 43 Method for operating a stroller (100), wherein the stroller is preferably designed according to aspect 3, wherein the method comprises that a release device (450) of the stroller (100) is transferred from a non-release state to a release state, and a first actuator (226) or a second actuator (227) of an actuating device (225) of the stroller (100) is transferred from an unactuated state to an actuated state, and a control device (240) of the stroller (100) controls a drive device (209) of the stroller (100) for driving (in particular propelling) the stroller (100).

[0162] Aspect 44 Method for operating a stroller (100), wherein the stroller is preferably designed according to aspect 5, wherein the method comprises that a first actuator (226) of an actuating device (225) of the stroller (100) is transferred from an unactuated state to an actuated state, and a control device (240) of the stroller (100) controls an electric motor (210) of a drive device (209) of the stroller

[0163] - Stroller - Parking brake - Rail - Child restraint device - Push handle - Side brace - Grip area - Front wheel frame section - Side segment - Cross segment - Rear wheel frame section - Side segment - Cross segment - First joint - Second joint - First adapter - Second adapter - Wheel - Front wheel - Rear wheel - Drive device - Motor - Rotor - Stator - Energy storage device - Actuating device - First actuator - Second actuator - Button - First actuating section - Second actuating section - Rotation axis - Fastening section - First stop - Second stop - Control device - Printed circuit board - Integrated circuit - Sensor device - Wheel movement sensor - Return spring - Interface device - Light source - Release device - Button

Claims

Claims 1. A stroller (100) comprising a control device (240), a drive device (209) and an interface device (410), wherein the control device (240) is configured to control the drive device (209) to drive the stroller (100), wherein the interface device (410) is configured to output information relating to an operating state of the drive device (209) to a user of the stroller (100) and / or to receive information from the user.

2. Stroller (100) according to claim 1, wherein the stroller (100) comprises: - a release device (450) which can selectively assume a release state and a non-release state, and / or - an actuating device (225) having a first actuator (226) and / or a second actuator (227), wherein the first and / or second actuator (226, 227) (each) can selectively assume an actuated state and an unactuated state.

3. Stroller (100) according to one of the preceding claims, in particular according to claim 2, wherein the control device (240) is configured to control the drive device (209) for driving (in particular propelling) the stroller (100) when the release device (450) is in the release state and when the first actuator (226) and / or the second actuator (227) is in the actuated state.

4. Stroller (100) according to one of the preceding claims, in particular according to claim 2, comprising at least one wheel (190) and a wheel movement sensor (251), wherein the control device (240) is configured to control the drive device (209) to drive the stroller (100) when the wheel movement sensor (251) detects a rotation of the at least one wheel (190) and when the first actuator (226) is in the actuated state.

5. Stroller (100) according to one of the preceding claims, wherein the wheel movement sensor (251) detects the rotation and / or the direction of rotation of the at least one wheel (190), optionally indirectly, wherein the drive device (20) preferably comprises a motor (210) with a rotor (211) and is further preferably connected to the at least one wheel (190) via a gear and / or a belt, so that the rotation, preferably also the direction of rotation, of the at least one wheel (190) can be detected via a rotation of the rotor (211).

6. Stroller (100) according to one of the preceding claims, wherein the drive device (209) can selectively drive the stroller (100) in one of at least two modes, wherein preferably one of the modes is a propulsion mode and / or one of the modes is a rocking mode and / or one of the modes is a braking mode.

7. Stroller (100) according to one of the preceding claims, wherein the control device (240) is configured to drive the stroller (100), in particular the at least one wheel (190), forward and / or, based on the position of the first actuator (226), to determine a requested drive power when the first actuator (226) is moved from a zero position in a first direction, wherein further preferably a movement in the first direction, at least starting from the zero position of the first actuator (226), is at least substantially a forward movement, and / or wherein the control device (240) is configured to drive the stroller (100), in particular the at least one wheel (190), backward and / or, based on the position of the first actuator (226), to determine a requested drive power when the first actuator (226) is moved in a second direction, wherein the first direction is opposite to the second direction,wherein further preferably a movement in the, second direction, at least starting from the zero position of the first actuator (226), is at least substantially a movement backwards and / or wherein the control device (240) is designed to determine a requested drive power based on the position of the first actuator (226), wherein the requested drive power acts on the stroller (100) in order to brake the stroller (100) when the first actuator (226) is not in the zero position.

8. Stroller (100) according to one of the preceding claims, in particular according to claim 6, wherein the control device (240) is designed to determine a requested drive power based on the position of the second actuator (227), wherein a third mode of the at least two modes is a rocking mode in which the requested drive power acts on the stroller (100) to rock the stroller (100) when the second actuator (227) is in the actuated state, wherein the second actuator preferably has a plurality of stages, wherein more preferably a higher actuator stage corresponds to a higher requested drive power.

9. Stroller (100) according to one of the preceding claims, wherein the release device (450) is automatically transferred back into the non-release state after being transferred into the release state, wherein preferably: - the release device (450) remains in the release state for a predetermined time after being transferred into the release state, and / or - the release device (450) is not automatically transferred from the release state to the non-release state as long as one of the first actuator (226) and the second actuator (227) is in the actuated state, wherein the transfer of the release device (450) between the release state and the non-release state preferably comprises an electrical process.

10. Stroller (100) according to one of the preceding claims, wherein the interface device (410) can output information optically, in particular by means of at least one illuminating means (453), preferably LED, preferably with an information content of 2 to 20 bits, and / or the interface device (410) can receive information via a button, in particular a membrane button and / or a conductive rubber button, or a touchpad, preferably via the button (451) and / or a touchpad.

11. Stroller (100) according to one of the preceding claims, wherein the interface device (410) comprises the release device (450) and / or the first actuator (226) and / or the second actuator (227).

12. Stroller (100) according to one of the preceding claims, wherein the operating state for which the interface device (410) can output information comprises: - a charge status of an energy storage device (220), preferably a battery, and / or - a set drive level of the drive device (209), and / or - a current state, namely release state or non-release state, of the release device (450), and / or - a basic status, namely switched on or switched off, and / or - an error code.

13. Stroller (100) according to one of the preceding claims, wherein the operating state for which the interface device (410) can receive information comprises: - a change in the state of the release device (450), and / or - a change in the set drive level, and / or - a change in basic status, and / or - a change in the state of the second actuator (227).

14. Stroller (100) according to one of the preceding claims, wherein the stroller has a brake, preferably a parking brake (101), wherein the brake preferably leaves a predetermined amount of play to the at least one wheel (190), even in the active state, and the control device (240) only activates the drive device (209) to drive the stroller (100) in a rocking mode, preferably in the rocking mode according to Claim 6, when a rocking precondition is met, wherein the rocking precondition preferably comprises: - that at least one wheel (190) can move in each direction by at most a predetermined proportion of a wheel revolution, wherein the movement of the at least one wheel (190) is further preferably limited by a stop, and / or - the brake is in an active state and / or - the first actuator (226) is in the unactuated state.

15. A method for operating a stroller (100), wherein the stroller is preferably designed according to claim 0, wherein the method comprises that a control device (240) of the stroller (100) controls a drive device (209) of the stroller (100) for driving the stroller (100), wherein - an interface device (410) of the stroller (100) outputs information relating to an operating state of the drive device (209), and / or - the interface device (410) receives information relating to an operating state of the drive device (209).

16. A method for operating a stroller (100), wherein the stroller is preferably designed according to claim 2, the method comprising - a release device (450) of the stroller (100) is transferred from a non-release state to a release state, and - a first actuator (226) or a second actuator (227) of an actuating device (225) of the stroller (100) is transferred from an unactuated state to an actuated state, and - a control device (240) of the stroller (100) controls a drive device (209) of the stroller (100) for driving (in particular propelling) the stroller (100).

7. A method for operating a stroller (100), wherein the stroller is preferably designed according to claim 2, wherein the method comprises - a first actuator (226) of an actuating device (225) of the stroller (100) is transferred from an unactuated state to an actuated state, and - a control device (240) of the stroller (100) controls an electric motor (210) of a drive device (209) of the stroller (100) for braking the stroller (100).

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