PERSONAL MOBILITY DEVICE, IN PARTICULAR ROLLER SKI, SKATEBOARD OR SIMILAR, FOR ROLLING

Description

[0001] The invention relates to a person locomotion device, in particular a roller ski, a skateboard or the like, for rolling locomotion on a surface, in particular driven by downhill force on a sloping surface, wherein the person locomotion device has at least one standing surface for at least one foot of a person traveling thereon and at least one rolling arrangement for rolling locomotion of the person locomotion device on the surface, wherein the person locomotion device extends along a longitudinal center axis, and wherein the rolling arrangement comprises a longitudinal rolling device which enables a rolling movement of the person locomotion device along the longitudinal center axis, and a transverse rolling device which enables a rolling movement of the person locomotion device along a transverse axis which runs at an angle to the longitudinal center axis, preferably perpendicular to the longitudinal center axis.

[0002] Furthermore, the invention relates to a rolling arrangement, in particular for such a passenger transport device.

[0003] GB 2 408 692 A discloses a passenger transport device with a plurality of rollers, each of which has further rollers on its outer circumference to enable transverse movement.

[0004] From the published patent application US 2012 / 0126523 A1, a roller ski has become known that is intended to give a skier a skiing experience similar to that of downhill skis on a snow base. The previously known roller ski is intended to enable lateral gliding on a flat, solid surface, comparable to drifting or carving with downhill skis on a snow base. For this purpose, the ski comprises a height- and length-angle-adjustable center platform for securing each skier's foot with the aid of a ski binding system. A front roller assembly along the longitudinal center axis of the center platform and a rear roller assembly, identical in construction along the longitudinal center axis of the center platform, each comprise a pair of fixedly aligned rollers that enable a rolling movement along the longitudinal center axis. In addition, a roller that can rotate perpendicular to the center platform is provided in each case.The rotating roller can orient itself freely, allowing rolling movements in any direction along the surface—even perpendicular to the longitudinal centerline—depending on its rotational position. A height difference between the fixed rollers and the rotating rollers allows the skier to switch between the fixed and rotating rollers by shifting their weight or tilting the ski, thus creating the feel and control characteristics of real snow skiing.

[0005] The present invention aims to further develop the previously known personal transport device in such a way as to produce a personal transport device with improved riding feel and control characteristics that are even closer to actual snow skiing. The invention also aims to provide a corresponding rolling arrangement.

[0006] The object is achieved by a rolling arrangement according to claim 1 and a passenger transport device having the features of claim 2.

[0007] The passenger transport device according to the invention is characterized in that the longitudinal and transverse rolling devices enable overlapping rolling movements along the longitudinal and transverse axes. Furthermore, the at least one rolling arrangement has a braking device by means of which a transverse braking force can be generated, which increases the rolling resistance of the transverse rolling device and thereby has a braking effect on rolling movements along the transverse axis. Finally, the transverse braking force can be varied by the person riding via the standing surface.

[0008] The invention is characterized by particularly pleasant controllability, since the braking device has a mechanical and / or hydraulic and / or electromagnetic spring device which resiliently supports the rolling arrangement, in particular a pair of rolling arrangements, relative to a platform.

[0009] Thanks to the kinematics of the rolling arrangement, a surprisingly ski-like ride is achieved, for example, on paved roads. The lateral braking function, which is perpendicular to the direction of travel (longitudinal center axis), results in a movement sequence and braking effect that are similar to the lateral drifting on the ski edges when skiing on a snow surface, and leads to very similar steering behavior. At the end of a turn, the rider can end the lateral braking effect, just as in snow skiing, and continue on a straight line. The personal mobility device thus enables a ski-like turn perpendicular to the direction of travel.

[0010] Preferably, the transverse axis runs perpendicular to the longitudinal central axis.

[0011] It is particularly advantageous if the standing surface is mounted relative to the rolling arrangement(s) in such a way that the person driving can change the inclination of the standing surface relative to the rolling arrangement(s) about a pivot axis which runs parallel to the longitudinal central axis or coincides with it, and the lateral braking force can thus be changed.

[0012] In the case of a particularly preferred embodiment, the transverse braking force is at its lowest when the standing surface is in a basic position relative to the rolling arrangement(s), in particular it is zero.

[0013] In this sense, the braking device is preferably designed in such a way that the transverse braking force is lowest, in particular zero, in the area of ​​the rolling arrangement when the weight is introduced into the locomotion device along the transverse axis by the person riding it is balanced with respect to the longitudinal center axis.

[0014] Alternatively or additionally, it is particularly advantageous for a ski-like driving experience if the braking device is designed in such a way that the transverse braking force increases with increasing inclination of the standing surface relative to the rolling arrangement(s).

[0015] Preferably, the braking device is therefore designed in such a way that the transverse braking force increases with increasingly unbalanced weight introduction into the locomotion device by the person riding along the transverse axis in the region of the rolling arrangement.

[0016] The same applies to an embodiment in which the braking device is designed in such a way that the transverse braking force can be changed, in particular between its lowest and its maximum value, independently of the rolling resistance of the longitudinal rolling device due to an inclination of the standing surface relative to the rolling arrangement(s) introduced into the locomotion device by the person driving it.

[0017] In this sense, a driving experience particularly similar to skiing on a snow surface is achieved, as the braking system is designed in such a way that the lateral braking force can be varied based on the weight introduced into the device by the rider via the standing surface, in particular, it can be varied between its minimum and maximum value without affecting the rolling resistance of the longitudinal rolling device. Similar to downhill skiing on a snow surface, cornering and braking are achieved by turning the ski and increasing the braking effect transversely to the ski's longitudinal axis, while the ski can still glide and roll smoothly in the longitudinal direction.

[0018] For a functionally reliable control of the personal transport device according to the invention and for reasons of personal safety, it is advantageous if the standing surface is provided with at least one fastening for the foot, shoe, boot or the like of the person riding, in particular with at least one safety binding in the manner of a ski safety binding.

[0019] Preferably, the locomotion device comprises a platform with the standing surface on the upper side and the rolling arrangement(s) on the underside. The platform can correspond in shape and material to a conventional downhill ski.

[0020] In a particularly preferred embodiment, the platform provided with the standing surface is mounted relative to the roller assembly(s) in such a way that the rider can change the inclination of the platform relative to the roller assembly(s) by shifting their weight, thereby altering the lateral braking force. Thanks to the control of the locomotion device by changing the inclination of the platform, the riding experience is particularly similar to that of downhill skiing on a snowy surface.

[0021] A particularly preferred embodiment which can be controlled without directional restrictions is obtained if the longitudinal and / or transverse rolling device enables an unlimited rolling movement along the longitudinal or transverse axis and / or the rolling arrangement is designed as an all-round rolling arrangement.

[0022] The rolling arrangement can be designed in various designs, for example the longitudinal and transverse rolling devices of the rolling arrangement can have rolling surfaces arranged side by side or radially to each other.

[0023] In the case of a particularly preferred compact design, the longitudinal and transverse rolling devices of the rolling arrangement are designed to be integrated into one another.

[0024] Another measure is increasing the diameter of the rollers, or rather, increasing the diameter of the small rollers. This increases the ability to drive over smaller obstacles such as stones.

[0025] Increased stability is achieved by a preferred embodiment in which the rolling arrangement is designed as a pair of rolling arrangements, which has two longitudinal and transverse rolling devices arranged at the same height along the longitudinal center axis and offset from one another along the transverse axis, and at least one braking device.

[0026] It is understood that each individual transverse rolling device of a rolling arrangement defines a transverse axis, which does not necessarily have to coincide with the transverse axis of another transverse rolling device. However, all transverse axes of the locomotion device preferably run at least parallel and preferably perpendicular to the longitudinal central axis. In the case of two rolling directions combined into a rolling arrangement pair, the two transverse axes of the transverse rolling devices preferably coincide.

[0027] An embodiment in which the locomotion device has at least two rolling assemblies, preferably two pairs of rolling assemblies, which are arranged offset from one another along the longitudinal central axis, is also characterized by increased stability, wherein the standing surface is preferably arranged between the two rolling assemblies, in particular the two pairs of rolling assemblies.

[0028] In this exemplary embodiment, the design of the locomotion device according to the invention comprises a front roller assembly or a pair of front roller assemblies and a rear roller assembly or a pair of rear roller assemblies. By shifting their weight, the rider can place greater load on the front or rear roller assembly or the pair of front or rear roller assemblies and relieve the other. The rider can adjust the inclination of the standing surface or the platform provided with the standing surface differently relative to the front roller assembly or the pair of front roller assemblies than relative to the rear roller assembly or the pair of rear roller assemblies. This, in turn, results in the transverse braking force acting on the front of the ski being different from that acting on the rear, allowing the ski to be easily rotated about an axis running transversely to the platform.This rotational movement is similar to the rotational movement of a ski when skiing on a snow base, for example when the skier performs a parallel turn.

[0029] Preferably, the rolling assembly, in particular a pair of rolling assemblies, is mounted on the platform so as to be pivotable about a pivot axis, wherein the pivot axis preferably runs parallel to the longitudinal center axis or coincides with the longitudinal center axis. In particular, the pivotability can serve to enable, as already mentioned above, the transverse braking device to be controlled by changing the inclination between the platform and the rolling assembly with respect to the pivot axis.

[0030] Alternatively or additionally, in a further preferred embodiment, the longitudinal rolling device of a rolling arrangement, preferably the longitudinal rolling devices of a pair of rolling arrangements together, is mounted pivotably about a steering pivot axis on a platform provided with the standing surface, wherein the steering pivot axis runs perpendicular to the longitudinal center and transverse axis.

[0031] Preferably, the longitudinal rolling device of a rolling arrangement, in particular the longitudinal rolling devices of a pair of rolling arrangements together, is mounted on a platform provided with the standing surface so as to be pivotable about the steering pivot axis in such a way that the rotational position of the longitudinal rolling device(s) with respect to the steering pivot axis can be changed, in particular adjusted, depending on the inclination of the platform to the rolling arrangement or to the pair of rolling arrangements with respect to the longitudinal central axis.

[0032] Thanks to these measures, the device according to the invention can be steered for cornering in addition to being controlled by means of the variable lateral braking force. Similar to a conventional skateboard, the rotational position of the longitudinal rolling mechanism relative to the longitudinal center axis of the device can be changed or adjusted by changing the platform inclination. This additional control option results in a driving behavior of the device according to the invention that is even more similar to snow skiing, and in particular to so-called carving on a snow surface.

[0033] In a particularly preferred embodiment, the platform is biased by the spring device into a home position in which the lateral braking force is zero. Consequently, without external force, the mobility device assumes the home position or automatically returns to it.

[0034] Preferably, in this basic position, the rotational axes of all transverse rolling devices are arranged parallel to the longitudinal center axis or coincide with it. Furthermore, the rotational axes of all longitudinal rolling devices run perpendicular to the longitudinal center axis in the basic position. Finally, the base preferably extends parallel to the longitudinal center axis and parallel to the rotational axes of the longitudinal rolling devices.

[0035] Particularly preferred is an embodiment in which the spring force constant or characteristic curve of the spring device is adjustable. Thanks to this measure, the mobility device can be individually adapted to the characteristics of the person (e.g., weight) and various driving conditions (surface surface, slope).

[0036] Preferably, the braking device is designed such that the transverse braking force can be introduced into the transverse rolling device mechanically, in particular by a frictional engagement, or electromagnetically.

[0037] In a particularly preferred embodiment, the braking device comprises a brake booster, which preferably has a wedge and / or cam element and / or a hydraulic brake booster.

[0038] A variant of the invention is characterized by a particularly compact design in which the braking device acts directly on a rolling surface of the transverse rolling device.

[0039] A low-wear and effective braking system is achieved by acting on a braking surface that is connected to the rolling surfaces of the rolling assembly in a rotationally fixed manner at least about a rotational axis. The braking system is preferably designed as a disc brake, in particular as a hydraulic disc brake.

[0040] A variant of the invention is characterized by a compact design and a reduction in manufacturing costs, in which the braking device serves as a braking device for two rolling devices of a pair of rolling arrangements.

[0041] The braking system can be electrically operated. Measuring the braking effect via at least one inclination and / or pressure sensor can simplify the passenger mobility device mechanically. In this case, only a single wheel (and not a pair of wheels) can be provided per bearing point.

[0042] In particular, the mechanical structure of the braking device can be at least partially replaced by a system with at least one gyroscope sensor for measuring inclination and / or at least one pressure sensor for measuring contact force. Depending on the inclination, a braking torque can be initiated—the greater the inclination, the greater the braking effect.

[0043] The compressive force can be measured at at least one bearing, especially at multiple bearings. If the pressure is reduced, which corresponds to a release of load from the personal mobility device, the braking force is reduced. This allows the personal mobility device to reduce the braking force and roll transversely to the direction of travel.

[0044] If multiple rollers are used at at least one bearing location, these rollers preferably have a spacer between them. This prevents contact during use, especially between soft rollers.

[0045] The spacer can be designed in the form of a bearing in the transition area of ​​the rollers.

[0046] Alternatively or additionally, the rollers can be constructed in multiple parts, with the core being made of a stiffer and / or harder material than the outer peripheral part of the rollers. In this case, the core can maintain the distance even between heavily worn outer roller parts.

[0047] Although the use of a rolling arrangement for a person moving device is considered to be particularly advantageous, the special kinematics and design of the rolling arrangement described in this document are also considered to be inventive independently of this specific use.

[0048] The rolling arrangement according to the invention is characterized in that the rolling arrangement comprises a first rolling device, which enables a rolling movement along a first axis of movement, and a second rolling device, which simultaneously with and superimposed on the rolling movement along the first axis of movement enabled by the first rolling device, enables a rolling movement along a second axis of movement, which runs at an angle, preferably perpendicular, to the first axis of movement. The rolling arrangement has a braking device, by means of which a braking force can be generated, which increases the rolling resistance of the second rolling device and thereby has a braking effect on rolling movements along the second axis of movement, wherein the braking device comprises a control element which can be pivoted about the first axis of movement of the first rolling device or an axis parallel thereto in order to adjust the braking force acting on the second rolling device.

[0049] The invention is explained below using exemplary embodiments. The figures show: Fig. 1 a perspective view of a person equipped with a pair of roller skis according to a first embodiment of the invention, Figs. 2 to 5 different views of a single roller ski according to the first embodiment of Figure 1 , Figs. 6 to 11 a pair of roller arrangements of the roller ski according to the first embodiment from the Figures 1 to 5 in different views and states, Fig. 12 a perspective view of a second embodiment of a roller ski, Figs. 13 to 16 a pair of roller arrangements of the roller ski according to the second embodiment Figure 13 in different views, Figs. 17 and 18 a side view and a perspective view of a third embodiment of a roller ski, Fig. 19 a sectional view of a rolling arrangement of the embodiment according to the Figs. 12 to 16 , Figs. 20 and 22 perspective views of alternative rolling arrangements, Figs. 23 and 24 two sectional views of an alternatively designed pair of roller arrangements, Figs. 25 and 26 two views of another embodiment in the form of a skateboard, Fig. 27 a perspective view of another embodiment in the form of a roller ski, Figs. 28 and 29 a plan view of a pair of roller arrangements of the roller ski according to Fig. 27 in two different positions and Figs. 30 and 31 further views of the roller assembly pair of the roller ski after Fig. 27 .

[0050] In Figure 1By way of example, a person is shown who is equipped with two personal locomotion devices according to the invention in the form of roller skis 2. With the help of the roller skis 2, the person can roll down a sloping surface due to the downhill force. Similar to locomotion with downhill skis on a snowy surface, the person can execute any desired turns, drift transversely to the longitudinal extension of the roller skis 2, and thereby control their speed. The design of the roller skis 2 even allows the person to execute parallel turns or slow down in the so-called snowplough position. The surface is preferably a flat, solid surface, e.g., in the form of an asphalt path.

[0051] The roller ski 2 from Figure 1 is unique in the Figures 2 to 5 shown, where the Figure 2 shows the roller ski 2 in a perspective view from the front, the Figure 3a view from below and Figure 4 a side view. Figure 5 Finally, a front view of the roller ski 2 can be seen.

[0052] The roller ski 2 has a platform 3, on the upper side of which a standing surface 4 is provided, and on the underside of which two roller assemblies 5 in the form of pairs of roller assemblies 8 are provided. The standing surface 4 is provided with a fastening 6 for the rider's foot, shoe, boot, or similar item, in particular in the manner of a ski safety binding 6. The ski safety binding 6 is shown only very schematically in the figures, but corresponds to a commercially available ski safety binding.

[0053] The roller ski 2 extends along a longitudinal center axis 7 and has a front and a rear pair of roller assemblies 8, which are arranged offset from one another along the longitudinal center axis 7, so that the standing surface 4 is arranged between the two pairs of roller assemblies 8. The pairs of roller assemblies 8 are of identical construction. They each comprise two rolling devices 15 ( Figure 3 ), which are arranged at the same height and opposite each other with respect to the longitudinal center axis 7.

[0054] By means of the rolling arrangement pairs 8, the roller ski 2 can perform superimposed rolling movements along the longitudinal center axis 7 and along a front and rear transverse axis 9, 10 ( Figure 2). The roller ski 2 can therefore roll freely in all directions on the traveling surface and rotate about a ski rotation axis 11 running transversely to the platform. The driving experience, similar to that of downhill skiing on snowy ground, is created in particular by the fact that braking devices are provided to control the traveling movement by shifting weight and / or changing the inclination of the standing surface 4 relative to the roller arrangements 5, by means of which the transverse rolling movements can be braked to a greater or lesser extent.

[0055] Based on the Figures 6 to 11 , which show a pair of rolling arrangements 8 in different views and states, their structure and functioning are explained in detail below.

[0056] Figure 6shows the pair of roller assemblies 8 in a perspective view from the front. The pair of roller assemblies 8 comprises a carrier plate 12, two control profiles 13, four braking devices 14, and two roller assemblies 15, each with longitudinal and transverse rollers, which are compactly integrated into one another. They are designed as a so-called omnidirectional roller assembly.

[0057] The individual rolling device 15 is mounted so as to be rotatable about an overall rotational axis 16 running parallel to the longitudinal central axis 7. In addition, the Figure 6 The shell or rolling segments 17, 18 (in the example shown, two outer shell segments 17 and two inner rolling segments 18) are rotatably mounted about axes of rotation 19, 20 perpendicular to the overall axis of rotation 16. The longitudinal and transverse rolling device 15 enables overlapping and unlimited rolling movements along the longitudinal center 7 and transverse axes 9, 10 ( Figure 2) and thus free rolling movements of the roller ski 2 on a surface.

[0058] The support plate 12 serves to fasten the pair of roller arrangements 8 to the underside of the platform 3 of the roller ski 2. The control profiles 13 are fixedly attached to the support plate 12 and the rolling devices 15 and the braking devices 14 are pivotally attached about a pivot axis 21 which coincides with the longitudinal central axis 7.

[0059] Figure 7 a section through the pair of rolling arrangements 8 is shown perpendicularly through the longitudinal center axis 7 at the level of the front control profile 13. Figure 8 is a central cut through the Figure 6 braking devices 14 arranged on the right side and the rolling device 15 arranged therebetween are shown in a sectional plane which runs parallel to the longitudinal central axis 7 and perpendicular to the transverse axis 9.

[0060] The braking devices 14 are designed as hydraulic disc brakes. The sectional view according to Figure 7 Control cylinders 22, control pistons 23, and hydraulic supply lines 24, which are filled with hydraulic fluid, can be seen. The control pistons are loaded with return springs 25.

[0061] In the case of a variant not shown, the spring force constant or characteristic curve of the return springs 25 can be adjusted from the outside by means of an adjustment device.

[0062] The hydraulic supply lines 24 lead into brake cylinders 27 provided with brake pistons 26, which are arranged in the Figure 8 are shown. In addition, the Figure 8the transverse axis rotary shaft 28 of the rolling device 15, on which the four rolling surface sections 17, 18 are rotatably mounted. The ends of the rotary shaft 28 are each provided with a non-rotatable brake disc 29. Brake pads 30 are arranged on the front side opposite the brake discs 19. In the Figure 8 In the state shown, the brake pads 30 are slightly spaced from the brake discs 29. However, the brake pads 30 can be pressed onto the brake discs 29 by means of the brake pistons 26 ( Figure 11 ).

[0063] From the Figures 6 to 8 It can be seen that both rolling devices 15 of the pair of rolling assemblies 8 each have a front and a rear braking device 14. This results in rolling devices 15 that can be braked reliably and effectively.

[0064] In the Figures 6 to 8The pair of rolling assemblies 8 is shown in its basic position, which it assumes when the platform 3 provided with the base 4 is not inclined relative to the pair of rolling assemblies 8. In this basic position, the braking force of the braking devices 14 is zero.

[0065] On the other hand, the roller assembly pair 8 is in the Figures 9 to 11 shown in an inclined position. Otherwise, the views of the Figures 9 to 11 the respective from the Figures 6 to 8 .

[0066] Out of Figure 10It can be seen that the support plate 12 and the control profiles 13 are inclined clockwise around the pivot axis 21 by an angle α relative to the roller devices 15. In this position, the control profile 13 has displaced the right control piston 23 downwards against the spring force of the return spring 25. As a result, hydraulic fluid has been conveyed via the hydraulic supply line 24 into the associated brake cylinder 27, whereby the brake piston 26 in turn presses the brake pad 30 onto the brake disc 29 ( Figure 11 This applies analogously to the Figure 9 rear, right brake device 14. The hydraulic system is designed in such a way that hydraulic brake force amplification is advantageously achieved.

[0067] Also from Figure 10 it is evident that the Figure 10left return spring 25 the control profile 13 is not subjected to force in the position shown. Overall, it is advantageous that the return springs 25 in the Figure 10 In the embodiment shown, the control profile 13 only applies force when compressed from the initial state. In the initial state, the control profile 13 is therefore not subjected to any force by any of the return springs 25.

[0068] By means of the braking devices 14, a transverse braking force can be generated, which increases the rolling resistance of the rolling devices 15 in the transverse direction and thereby has a braking effect on rolling movements along the transverse axis 9, 10. The transverse braking force can therefore be varied due to a weight shift initiated by the person riding on the platform 3 via the standing surface 4, which is accompanied by a change in the inclination of the platform 3 relative to the rolling assembly 5 or the pair of rolling assemblies 8.

[0069] With increasingly unbalanced weight introduction along the transverse axis 9, 10 in the area of ​​the rolling arrangement pair 8 with respect to the longitudinal center axis 7, the inclination and thus the transverse braking force increases up to a maximum transverse braking force.

[0070] The more the platform 3 is inclined relative to the pair of rolling arrangements 8, the more the brake pad 30 is pressed onto the brake disc 29 and the more the rolling resistance of the rolling device 15 increases in the transverse direction and thus the braking force effect.

[0071] The braking devices 14 have no influence on the rolling resistance of the rolling device 15 in the longitudinal direction. It remains unchanged regardless of the position of the platform 3 relative to the pair of rolling assemblies 8.

[0072] When the weight introduction along the transverse axis 9, 10 in the area of ​​the rolling assembly pair 8 is balanced with respect to the longitudinal center axis 7, the rolling assembly pair 8 returns to its basic position ( Figures 6 to 8), at which the braking force is zero.

[0073] In the Figure 12 a second embodiment of a roller ski 2 is shown. In Figures 13 to 15 is the roller assembly pair 8 of the embodiment according to Figure 12 shown in different views. In Figure 13 The roller assembly pair 8 is shown in perspective. In Figure 14 is a sectional view through the control cylinder 22 of the rolling assembly pair 8, in Figure 15 by the central brake cylinder 27 of the rolling assembly pair 8 and in the Figure 16 a sectional view along the transverse axis rotary shaft 28 of the Figure 14 front rolling device 15 of the rolling arrangement pair 8. For components with identical or similar functions, the same reference numerals were used as for the first embodiment according to the Figures 1 to 11 used.

[0074] The second embodiment differs from the first embodiment in that the transverse axis rotary shaft 28 is provided with a braking device 14 only at one end and is mounted in the rolling arrangement 8 only at this end, which is particularly well Figure 16 can be seen. Furthermore, the braking device 14 is designed similarly to known hydraulic bicycle disc brakes with a brake disc 29 actuated on both sides.

[0075] The rolling arrangement pair 8 comprises two control profiles 13, a common control cylinder 22 ( Figure 14 ) and a common brake cylinder 27 ( Figure 15 ) for the separate brake discs 29 of the two rolling devices 15. In this respect, the embodiment according to the Figures 13 to 16in that each pair of roller arrangements 8 comprises only one control cylinder 22, one brake cylinder 27 and two brake discs 29. It is structurally more compact and can be manufactured more cost-effectively than the embodiment according to the Figures 1 to 11 , in which each pair of rolling assemblies 8 comprises four control cylinders 22, four brake cylinders 27 and four brake discs 29.

[0076] In contrast to the embodiment according to the Figures 1 to 11 , the return spring 25 is pre-tensioned in the basic state of the roller ski 2, ie the control profiles 13 are also subjected to force by the return spring 25 in the basic state.

[0077] In a modified embodiment, the control profiles 13 can additionally or alternatively be individually supported at their outer angle by return springs (not shown).

[0078] In the Figures 17 and 18A third exemplary embodiment is shown as an example, which differs from the two previous exemplary embodiments mainly in that the transverse axis rotary shafts 28 are mounted around overall axes of rotation 16, which run at an angle and not parallel to the plane of the platform 3. The inclined position increases off-road capability due to greater ground clearance.

[0079] The detailed design of the rolling arrangement pairs 8, in particular the braking devices 14 contained therein, is shown in the Figures 17 and 18 not shown for reasons of clarity. The detailed design can, for example, largely correspond to the design of the second embodiment according to the Figures 12 to 16 are equivalent to.

[0080] In Figure 19 is a central sectional view of the rolling devices 15 of the roller ski 2 according to the Figures 12 to 16 shown.

[0081] The rolling device 15 is a single-sided rolling device 15 with integrated transverse and longitudinal rolling devices. The rolling device 15 comprises four inner rolling segments 18 and two outer shell segments 17, which all rotate around the overall rotation axis 16 (perpendicular to the plane of the drawing). Figure 19 ) are rotatably mounted. The outer shell segments 17 are mounted independently of each other for rotation about the rotation axis 19. The four inner roller segments 18 are mounted independently of each other for rotation about the rotation axes 20.

[0082] It should be particularly emphasized that the gap 34 within the rolling surface between the outer shell segments 17 and the respective inner rolling segments 18 in the plane of the drawing of the Figure 19 particularly small (for a better understanding of the position of the gap 34 on the rolling surface see also Figure 13This measure results in a uniform rolling behavior of the roller direction 15, particularly during the transition from the rolling contact of an inner rolling segment 18 to the rolling contact of an outer shell segment 17 on the ground. Furthermore, the ability to drive over smaller obstacles such as stones increases.

[0083] Furthermore, the compact design and the resulting effective mutual support of the shell and rolling segments 17, 18, particularly in the circumferential direction, are noteworthy. This allows the segments 17, 18 to be constructed with relatively thin walls, eliminating the need for additional bearings. This results in a particularly low-wear rolling device 15.

[0084] The embodiments according to the Figures 1 to 11 , 17 , 18 and 25 to 31 The rolling devices 15 of the embodiments according to the Figures 1 to 11 and 25 and 26In contrast to the other embodiments, the rolling devices 15 are mounted on both sides.

[0085] The structure of the integrated rolling devices 15 according to the exemplary embodiments shown is also considered to be independently inventive, independent of the further design of the rolling arrangements 5 or the rolling arrangement pairs 8, in particular with and without braking devices.

[0086] In the Figures 20 to 22 Three further variants of rolling devices 15 are shown as examples.

[0087] At the Figure 20 The rolling device 15 shown is, as with the rolling device 15 from the Figures 1 to 11around a rolling device 15 mounted on both sides with integrated transverse and longitudinal rolling devices. The rolling device 15 is mounted for rotation about the overall rotation axis 16. In addition, an inner rolling segment 18 and two outer shell segments 17 are mounted for rotation about axes 19, 20 running perpendicular to the overall rotation axis 16.

[0088] In contrast, in Figure 21 An example of a rolling device 15 supported on both sides is shown, in which two pairs of outer shell segments 17 are arranged offset from one another. The shell segment pairs 17 are mounted on the transverse axis rotary shaft 28 for rotation about two different axes of rotation 19, which in turn is mounted for rotation about the overall axis of rotation 16, which runs perpendicular to the two axes of rotation 19.

[0089] Finally, in Figure 22 a roller arrangement 5 with four individual rollers 31 is shown, which are rotatably mounted in different alignments on a rotatably mounted transverse axis rotary shaft 28.

[0090] All rolling arrangements 5 shown are designed so that the longitudinal and transverse rolling devices 15 enable overlapping, unlimited and thus free rolling movements on a surface.

[0091] In the shown examples of the Figures 1 to 18 The braking devices 14 generate the transverse braking force mechanically through frictional engagement with a brake disc 29. Alternatively, in a variant not shown, the braking force can also be generated electromagnetically. The braking devices 14 can also act directly on the rolling surfaces of the rolling devices 15.

[0092] Preferably, the rolling devices 15 of a pair of rolling arrangements 8 are mounted on the platform 3 around a common pivot axis 21. The Figures 23 and 24show, by way of example, an embodiment of a pair of rolling arrangements 8, in which the rolling devices 15 are each individually mounted on the support plate 12 about different pivot axes 21, via which the pair of rolling arrangements 8 can be fastened to the platform 3.

[0093] Figure 23 shows a sectional view in a plane which runs perpendicular to the pivot axes 21 and through the return springs 25, by means of which the individual rolling devices 15 are held spring-loaded in the non-braking basic position relative to the carrier plate 12.

[0094] Figure 24 shows the roller assembly pair 8 in a section plane parallel to the section plane of the Figure 23 , and passes through the transverse axle rotating shafts 28 at the level of brake wedges 32 of the braking devices 14. The Figure 24The left rolling device 15 has been moved, e.g. by shifting the weight of the person driving, from the basic position into a braking position in which the brake wedge 32 acts to brake the transverse axis rotary shaft 28.

[0095] The Figures 25 and 26 Finally, an embodiment of a personal transport device in the form of a skateboard 33 can be seen, which is designed for rolling movement driven by a slope force on a sloping surface. The board has a platform 3 with standing surfaces 4 for attachment by means of ski bindings of both feet of a riding person. On the underside, the platform 3 is provided with two pairs of roller assemblies 8, the structure of which is not shown in detail. However, in terms of function and structure, they correspond to the pairs of roller assemblies 8 of the embodiment of a roller ski 2 according to the Figures 1 to 11. Alternatively, they may also correspond to the roller assembly pairs 8 of the other described embodiments of a roller ski 2.

[0096] Due to the roller arrangement pairs 8 designed according to the invention, the riding behavior of the skateboard 22 is similar to the riding behavior of a snowboard on a snow surface.

[0097] In the Figures 27 to 31 A further embodiment of a roller ski 2 is shown. The roller ski 2 is characterized in that the front and rear pair of roller assemblies 8 are each pivotably mounted on the platform 3 about a steering pivot axis 35. The steering pivot axes 35 run perpendicular to the longitudinal center axis 7 and to the transverse axes 8, 9 of the respective pair of roller assemblies 8. In the unloaded basic state of the roller ski 2, the steering pivot axes 35 preferably also run perpendicular to the standing surface 4.

[0098] The pairs of rolling arrangements 8 are mounted on the platform 3 so as to be pivotable about the associated steering pivot axis 35, such that the rotational position of the rolling devices 15 about the steering pivot axis 35 is adjustable depending on the inclination of the platform 3 to the pairs of rolling arrangements 8.

[0099] In the Figures 28 and 29 is shown as an example a top view of the front roller assembly pair 8 without platform 3 but with the support plate 12, wherein Figure 28 the rolling arrangement pair 8 in the unloaded basic state, Figure 29 when the platform 3 is inclined. It can be seen that the rolling devices 15, including a bearing block 36, change their rotational position relative to the steering pivot axis 35 depending on the inclination of the support plate 12 and thus of the platform 3.

[0100] The bearing block 36 serves to support the rolling devices 15 around the overall rotational axes 16 of the rolling devices 15. Furthermore, the bearing block 36 comprises the brake cylinder 27 and piston 26 of the hydraulically operated braking device 14 of the rolling arrangement pair 8. It is connected to the pivot bearing 37 ( Figure 30 ) is mounted on the support plate 12 about the steering pivot axis 35. A driver 38 attached to the support plate 12 causes the rotational position of the bearing block 36 to change depending on the inclination of the support plate 12.

[0101] The control cylinder 22 and piston 23, together with the control profiles 13 of the brake device 14, are fixedly mounted on the support plate 12 or the platform 3 in a rotationally fixed manner about the steering pivot axis 35. The control cylinder 22 is connected to the brake cylinder 27 by means of a flexible hydraulic supply line 24 ( Figure 31 ) tied together.

[0102] The roller ski 2 according to the Figures 27 to 31In addition to being controlled by means of the variable lateral braking force, the roller ski 2 can also be steered to execute curves by changing or adjusting the rotational position of the roller devices 15 relative to the longitudinal center axis 7 by changing the platform inclination, similar to a conventional skateboard. This additional control option results in a driving behavior of the roller ski 2 that is even more similar to snow skiing, and in particular to so-called carving on a snow surface.

[0103] Further variations and modifications of the passenger transport device according to the invention are conceivable.

[0104] An example is a variant in which the control of the lateral braking force is carried out electronically and by means of sensors (e.g. in the form of gyro sensors) that measure the inclination of the platform relative to the rolling assembly or the pair of rolling assemblies.

[0105] The passenger transport device according to the invention can also be equipped with an (electric) motor drive device by means of which the passenger transport device can be driven in addition to, instead of and / or against a slope drive force.

[0106] Furthermore, in addition to the braking device which generates a controllable transverse braking force, a braking force device can be provided by means of which the person driving can brake the rolling movement along the longitudinal central axis.

[0107] Regardless of the use of the rolling arrangement in a personal mobility device, a rolling arrangement is generally considered to be inventive which comprises a first rolling device which enables a rolling movement along a first axis of movement, and a second rolling device which, superimposed on the rolling movement along the first axis of movement made possible by the first rolling device, enables a rolling movement along a second axis of movement which runs at an angle, preferably perpendicular, transverse to the first axis of movement.The rolling arrangement further comprises a braking device by means of which a braking force can be generated which increases the rolling resistance of the second rolling device and thereby has a braking effect on rolling movements along the second axis of movement, wherein the braking device comprises a control element which is pivotable about the first axis of movement of the first rolling device or an axis parallel thereto in order to adjust the braking force acting on the second rolling device.

[0108] Advantageous embodiments of the rolling arrangement result from the above explanations regarding the rolling arrangements of the passenger transport device according to the invention. List of reference symbols 29. brake disc 1 ... 30. brake pad 2. roller skis 31. Single rolls 3. platform 32. brake wedge 4. Stand area 33. skateboard 5. Rolling arrangement 34. Gap between inner rolling segments and outer shell segment 6. Ski binding 7. Longitudinal center axis 8. Roller assembly pair 35. Steering swivel axle 9. front transverse axis 36. Bearing block of the roller directions 10. rear transverse axle 37. Pivot bearing for bearing block 11. Ski rotation axis 38. Driver for bearing block 12. carrier plate 13. Tax profile 14. braking device 15. Transverse and longitudinal rolling device 16. Total axis of rotation of the rolling device 17. outer shell segment 18. inner rolling segment 19. Rotation axis of the outer shell segment 20. Rotation axis of the inner rolling segments 21. Swivel axis of the rolling assembly pair 22. control cylinder 23. control piston 24. Hydraulic supply line 25. Return spring 26. brake piston 27. brake cylinder 28. Cross-axis rotary shaft

Claims

1. Roller arrangement (5), wherein the roller arrangement (5) comprises a first rolling device (15) that enables a rolling movement along a first movement axis (7), and a second rolling device (15) that, in superimposition with the rolling movement enabled by the first rolling device (15) along the first movement axis (7), enables a rolling movement along a second movement axis (9, 10) which extends at an angle to the first movement axis (7), the roller arrangement (5) having a braking device (14) by means of which a braking force can be generated which increases the rolling resistance of the second rolling device (15) and thereby acts as a brake on rolling movements along the second movement axis (9, 10), the braking device (14) comprising a control element (13) which, for the purpose of adjusting the braking force acting on the second rolling device (15), can be pivoted about a pivot axis (21) which runs parallel to the first movement axis (7) or coincides with the first movement axis (7), characterized in that the braking device (14) has a mechanical and / or hydraulic and / or electromagnetic spring device (25) which resiliently supports the roller arrangement (5) with respect to a platform (3) provided with a standing surface (4).

2. Personal locomotion device (2, 33) for rolling locomotion on a ground, the locomotion device (2, 33) having at least one standing surface (4) for at least one foot of a moving person and at least one roller arrangement (5) for rolling locomotion of the locomotion device (2, 33) on the ground, the locomotion device (2, 33) extending along a longitudinal center axis (7), and wherein the roller arrangement (5) comprises a longitudinal rolling device (15) for enabling rolling movement of the locomotion device (2, 33) along the longitudinal center axis (7) and a transverse rolling device (15) for enabling rolling movement of the locomotion device (2, 33) along a transverse axis (9, 10) extending at an angle to the longitudinal center axis (7), the longitudinal and transverse rolling devices (15) enabling rolling movements that overlap one another along the longitudinal center axis (7) and transverse axis (9, 10), the at least one roller arrangement (5) having at least one braking device (14) by means of which a transverse braking force can be generated that increases the rolling resistance of the transverse rolling device (15) and thereby has a braking effect on rolling movements along the transverse axis (9, 10), wherein the transverse braking force can be changed by the moving person via the standing surface (4), characterized in that the braking device (14) has a mechanical and / or hydraulic and / or electromagnetic spring device (25), which resiliently supports the roller arrangement (5) with respect to a platform (3) provided with the standing surface (4).

3. Personal locomotion device (2, 33) according to claim 2, characterized in that the standing surface (4) is mounted with respect to the roller arrangement (5) or the roller arrangements (5) in such a way that the moving person can change the inclination of the standing surface (4) with respect to the roller arrangement (5) or roller arrangements (5) about a pivot axis (21) which runs parallel to or coincides with the longitudinal center axis (7), and the lateral braking force can thus be changed.

4. Personal locomotion device (2, 33) according to one of the claims 2 or 3, characterized in that the braking device (14) is designed in such a way that the lateral braking force is at its lowest in a basic position of the standing surface (4) with respect to the roller arrangement (8) or roller arrangements (8).

5. Personal locomotion device (2, 33) according to one of the claims 2 to 4, characterized in that the braking device (14) is designed in such a way that the transverse braking force increases with increasing inclination of the standing surface (4) with respect to the roller arrangement (5) or roller arrangements (5).

6. Personal locomotion device (2, 33) according to one of the claims 2 to 5, characterized in that the braking device (14) is designed such that the transverse braking force can be changed as a result of an inclination of the standing surface (4) with respect to the roller arrangement (5) or roller arrangements (5) introduced into the locomotion device (2, 32) by the moving person independently of the rolling resistance of the longitudinal rolling device (15).

7. Personal locomotion device (2, 33) according to one of the claims 2 to 6, characterized in that the standing surface (4) is provided with at least one fastening means (6) for the foot, shoe, boot or similar of the moving person.

8. Personal locomotion device (2, 33) according to one of the claims 2 to 7, characterized in that the locomotion device (2, 33) has a platform (3) on the upper side of which the standing surface (4) is provided and on the underside of which the roller arrangement (5) or the roller arrangements (5) are provided.

9. Personal locomotion device (2, 33) according to one of the claims 2 to 8, characterized in that the longitudinal and / or the transverse rolling device (15) enable(s) unlimited rolling movement along the longitudinal center axis (7) or transverse axis (9, 10) and / or that the roller arrangement (5) is designed as an omnidirectional roller arrangement.

10. Personal locomotion device (2, 33) according to one of the claims 2 to 9, characterized in that the longitudinal and the transverse rolling device (15) of the roller arrangement (5) have separate rolling surfaces (17, 18) which are integrated into one another, are arranged next to one another or radially with respect to one another.

11. Personal locomotion device (2, 33) according to one of the claims 2 to 10, characterized in that the roller arrangement (5) is designed as a pair of roller arrangements (8) which has two longitudinal and transverse rolling devices (15) arranged at the same height along the longitudinal center axis (7) and offset with respect to one another along the transverse axis (9, 10), and at least one braking device (14).

12. Personal locomotion device (2, 33) according to one of the claims 2 to 11, characterized in that the roller arrangement (5) is attached to a platform (3) provided with the standing surface (4) so as to be pivotable about a pivot axis (21).

13. Personal locomotion device (2, 33) according to one of the claims 2 to 12, characterized in that the longitudinal rolling device (15) of a roller arrangement (5) is attached to a platform (3) provided with the standing surface (4) such that it can be pivoted about a steering pivot axis (35), wherein the steering pivot axis (35) extends perpendicular to the longitudinal center axis (7) and the transverse axis (9, 10).

14. Personal locomotion device (2, 33) according to one of the preceding claims, characterized in that the longitudinal rolling device (15) of a roller arrangement (5) is attached to a platform (3) provided with the standing surface (4) such that it can be pivoted about a steering pivot axis (35) such that the rotational position of the longitudinal rolling device(s) about the steering pivot axis (35) can be changed in dependence on the inclination of the platform (3) to the roller arrangement (5) with respect to the longitudinal center axis (7).