EP4347065A1 - Skateboard mit einem verformbaren trittbrett zum antrieb der räder - Google Patents
Skateboard mit einem verformbaren trittbrett zum antrieb der räderInfo
- Publication number
- EP4347065A1 EP4347065A1 EP22727300.0A EP22727300A EP4347065A1 EP 4347065 A1 EP4347065 A1 EP 4347065A1 EP 22727300 A EP22727300 A EP 22727300A EP 4347065 A1 EP4347065 A1 EP 4347065A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- skateboard
- connecting element
- footboard
- deck
- drive means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C17/00—Roller skates; Skate-boards
- A63C17/01—Skateboards
- A63C17/014—Wheel arrangements
- A63C17/015—Wheel arrangements with wheels arranged in two pairs
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C17/00—Roller skates; Skate-boards
- A63C17/01—Skateboards
- A63C17/011—Skateboards with steering mechanisms
- A63C17/012—Skateboards with steering mechanisms with a truck, i.e. with steering mechanism comprising an inclined geometrical axis to convert lateral tilting of the board in steering of the wheel axis
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C17/00—Roller skates; Skate-boards
- A63C17/12—Roller skates; Skate-boards with driving mechanisms
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C2203/00—Special features of skates, skis, roller-skates, snowboards and courts
- A63C2203/42—Details of chassis of ice or roller skates, of decks of skateboards
Definitions
- the invention relates to a skateboard with an elastically deformable footboard, on the underside of which are attached two skateboard axles, spaced apart from one another in the longitudinal direction of the footboard and oriented transversely to the longitudinal direction, for the attachment of two wheels each.
- the publication DE 10327970 A1 discloses a skateboard that has an elastically deformable footboard, on the underside of which two skateboard axles are mounted, of which wheels are rotatably attached to the rear axle of the skateboard via a freewheel with planetary gears.
- the one-piece running board is curved upwards when unloaded and is able to perform oscillating movements around an angle a when the weight is periodically loaded and unloaded.
- the oscillating movements result in a periodic oscillating movement of the rear axle of the skateboard, whereby the freewheel can be accelerated in such a way that the output number in the planetary gear is greater than the speed of the drive wheels.
- Document DE 3427834 A1 discloses a roller board with a footboard that can be tilted, the periodic tilting movements of which are used by means of a chain run to drive a drive wheel, the drive axle of which is coupled to the chain run via a freewheel.
- GB 2452692 A discloses a skateboard which provides a cable stretched between the front and rear axles which is connected to a rack and pinion gear mounted on the rear axle. By deformation of the board the distance between the front and rear axles is changed, whereby a torque generated in the transmission is transmitted to the rear wheels attached to the rear axle to drive them. When the board is relieved, a tension spring attached to the rack and pinion mechanism pulls back a linearly deflected rack and keeps the cable taut at all times.
- the publication WO 2014/043450 A1 describes a scooter similar to the above publication with an upwardly curved running board and a rigid connecting element between the front and rear axles, but the forward and backward movement of the rear end of the running board is converted into a rotational movement via a mechanism to drive the rear wheels wherein a connecting member fixed to the rear end of the footboard is guided along a helical member whose helical axis is connected to the rear axle of the amusement ride.
- the speed of the rear axle can be influenced by the number of windings or the tilting of the spiral in the longitudinal direction.
- a weight-driven deformation or change in inclination of the footboard is used directly via a drive mechanism to propel the skateboard.
- the invention is based on the object of further developing a skateboard with an elastically deformable footboard, on the underside of which two skateboard axles, which are arranged spaced apart from one another in the longitudinal direction of the footboard and are oriented transversely to the longitudinal direction, for attaching two wheels each, are attached in such a way that a muscle-power-driven Skateboard drive ensures that a skateboard acceleration is not caused, as with all known forms of drive, during a body weight-related deformation or change in position of the footboard, but during the relief of the footboard. In this way, the skateboard can be accelerated and operated by a user in a natural and much more harmonious manner.
- the skateboard according to the solution has at least one skateboard axle, preferably the rear axle, which has a rotary shaft that is preferably continuous, to which the wheels are each attached in a rotationally fixed manner at the end of the rotary shaft.
- a gear preferably in the form of a freewheel gear or a centrifugal clutch, which is capable of generating a drive torque oriented exclusively in one direction of rotation about the rotary shaft to the rotary shaft.
- a connecting element extending between the skateboard axles is attached to the underside of the running board, which is preferably designed to be flexible and has two connecting element ends that are attached to the skateboard axles and/or the running board, preferably as close as possible to the skateboard axles .
- the connecting element runs between its connecting element ends at a distance from the underside of the running board, it has a convex shape facing away from the running board and has a maximum distance from the running board in the middle between the two skateboard axles, which is maximum when the running board is in a load-free state and by way of a load-related , Elastic deformation of the running board can be reduced.
- a cable or belt-type drive means that transmits tensile forces is provided, which on the one hand is attached to the gear unit so that it can be wound up and unwound in a first direction of rotation and on the other hand is articulated in the area of the maximum distance between the footboard and the connecting element in such a way that when the footboard is loaded and an associated reduction in the maximum distance between the running board and the connecting element, the drive means in the form of a cable or belt can be wound up on the gear and when the load on the running board is reduced and the maximum distance between the running board and the connecting element is increased as a result, the drive means exerting the force on the Rotary shaft acting drive torque, which is caused at least by an inherent elastic restoring force of the footboard, can be handled.
- a winding means in the form of a rope or belt that transmits tensile forces is provided, which on the one hand is attached to the gearing in a first winding direction of winding opposite winding direction up and unwound and on the other hand is attached to a spring arrangement for generating a tension acting along the winding means.
- the spring force of the spring assembly and thereby The tensile stress caused along the winding means is to be selected as low as possible, especially since it continuously counteracts the drive torque acting in the acceleration phase of the running board, but is to be selected sufficiently large enough to enable controlled winding of the cable or belt-shaped drive means onto the gearing, preferably in the state a maximum weight force-related elastic deformation of the running board, in which the maximum distance between the running board and the connecting element is minimal.
- a preferred embodiment of the skateboard provides for the attachment of at least one, preferably a large number of rotatably mounted deflection rollers both on the underside of the footboard and on the side of the connecting element facing the footboard at the location of the maximum distance between footboard and connecting element, so that the end drive means attached to the running board or to the connecting element at the location of the maximum distance is guided by multiple looping around the rotatably arranged deflection rollers, quasi comparable to a multiple pulley arrangement, before the drive means is guided directly or indirectly for winding onto the gear.
- the length of the drive means that can be wound onto the gear can be significantly increased in relation to the maximum stroke or a maximum change in distance between the running board and the connecting element.
- the skateboard according to the solution is thus able to convert the bending stress temporarily stored in the running board, which is caused by the weight of a person weighing on the skateboard, into drive energy when the bending stress bounces up or is released, with the rope or band-like drive means on the rotatably arranged deflection rollers between several times Footboard and the connecting element arranged underneath is guided.
- the drive means rolls onto the gear on the rear skateboard axle.
- the bending stress of the footboard ensures that the footboard returns to its load-free starting position and the distance between the deflection rollers attached to the footboard and the connecting element increases, whereby the rolled up or wound drive means unrolls.
- This drives the rotary shaft of the rear axle and the wheels attached to it.
- the path of the drive means can be influenced via this mechanism in the manner of a pulley block in such a way that the power transmission can be adapted to different speeds of the rotary shaft on the rear skateboard axle is possible.
- a stretch-resistant cable or band made of a low-wear plastic fiber mesh or a metallic material is preferably suitable for forming the attachment and winding means.
- Fig. 1b detailed view of the skateboard in the unloaded state
- 2a overall side view of a skateboard designed according to the solution in the loaded state
- Fig. 2b detailed view of the skateboard in the loaded state.
- the skateboard illustrated in all of FIGS. 1a, b and 2a, b consists of a flexible or elastically deformable footboard 1, which is preferably made of glued seams or other suitable flexible materials.
- the running board 1 has a conventionally shaped skateboard and is preferably curved somewhat convexly upwards in the middle of the running board area and is provided with a positive prestress, as is referred to as “camber” in skateboards.
- Figures 1a, b show the skateboard in an overall side view and detailed view in the unloaded state
- Figures 2a, b show the skateboard respectively in the loaded state.
- the further description refers to all figures.
- a front and rear skateboard axle 2, 3 are attached, on each of which two wheels 4 are attached.
- the skateboard front axle 2 corresponds to the standard construction of a skateboard axle, which causes the skateboard to be steered when the footboard 1 is tilted to one side.
- the connecting element 5 can be in one piece or composed of at least two parts which are connected to one another via a stable and preferably rigid joining means. In the case of a connecting element 5 composed of two parts, it is advantageous to join in the middle of the longitudinal extension of the connecting element 5 to select.
- the connecting element 5 is not necessarily made of a flexible material, for example wood or fiber-reinforced plastic. It is also conceivable to design the connecting element 5 to be dimensionally stable, for example by appropriate choice of shape and/or material.
- the two ends of the connecting element 5 are preferably fastened by means of hinges or grooves, so that a relative longitudinal mobility of the connecting element 5 relative to the running board 1 is possible.
- the convex shape of the connecting element 5 is selected such that the connecting element 5 just does not touch the ground on which the skateboard rests in the area of the maximum distance 6 between the connecting element 5 and the running board 1 .
- a bearing 7, 8 is arranged in the middle and transversely to the longitudinal direction of the running board 1, in which several ball bearing-mounted deflection rollers 9, 10 are attached, via which a rope-like drive means 11 is led.
- the rope-like drive means 11 is fixed on one end either to the footboard 1 or to the connecting element 5, runs around the large number of deflection rollers 9, 10 rotatably attached to the bearings 7, 8 and then runs over another one arranged near the rear skateboard axle 3 Pulley 12.
- the rear deflection roller 12 prevents the distance between the rear deflection roller 12 and the bearings 7, 8 from being lengthened when the running board 1 is pushed through and the skateboard rear axle 3 tilts as a result.
- the rear deflection roller 12 is also mounted so that it can be tilted laterally, so that the cable-like drive means 11 cannot jump out of the deflection roller guide during steering movements of the rear skateboard axle 3 .
- the board-like connecting element 5 has a recess in the area of the rear deflection rollers 12 through which the cable-like drive means 11 can be guided unhindered in the direction of the rear skateboard axle 3 .
- the rear skateboard axle 3 differs from a standard skateboard axle in that a continuous rotary shaft (not shown) is provided, on which the wheels 4 are seated so as to rotate.
- the rotating shaft of the rear skateboard axle 3 is connected to the axle frame 13 via ball bearings.
- the axle frame 13 has an open design in some areas, so that a gear 14, preferably in the form of a freewheel gear or a centrifugal clutch, is attached directly to the rotary shaft, and the rope-like drive means 11 is fastened to the end of the gear so that it can be wound and unwound in a first winding direction. Furthermore, the gear 14 has a first groove-shaped spindle contour 15 for the winding and unwinding of the rope-like drive means 11 .
- the rear skateboard axle 3 is attached, as is usual with skateboard axles, in such a way that a lateral inclination of the running board 1 causes the skateboard to be steered.
- the rope-like drive means 11 extends between a fixed attachment to the footboard 1 or connecting element 5 in the area of their mutual maximum distance 6 and the gear 14 attached to the rear skateboard axle 3.
- Gear 14 has a second groove-shaped spindle contour 16, on which a cable-like winding means 17 is wound and fixed with a second rotary winding direction oriented opposite to the first rotary winding direction.
- the other end of the winding means 17 is fixed to a spring arrangement 18 which is preferably attached centrally to the underside of the running board 1 .
- the spring arrangement 18 generates a tensile force or tensile stress acting along the cable-like winding means 17, which is just designed to be strong enough to loose rope-like drive means 11 can roll onto the first spindle contour 15 on the gear 14, especially since, as will be explained below, counteracts the drive torque.
- the gear 14 is arranged and designed in such a way that it can move freely in the opposite direction of travel when the rope-like drive means 11 is wound up, without influencing the rotation of the rotary shaft to which the wheels 4 are fixed in a rotationally fixed manner.
- a torque accelerating the skateboard is transmitted to the rotary shaft as long as the unwinding takes place faster than the rotary shaft of the rear axle rotates.
- FIGS. 1a, b show the skateboard in a load-free state, in which the footboard 1 and the connecting element 11 arranged under the footboard 1 are at a maximum distance.
- a rider climbs onto the skateboard and presses the elastic footboard 1 downwards.
- the distance between the footboard 1 and the connecting element 5 is reduced and the rope-like winding means 17 rolls the rope-like drive means 11 that has become free or loose onto the first spindle contour 15 of the gear 14 .
- This state is illustrated in FIGS. 2a, b.
- the forward movement of the skateboard is not impaired by the winding-up process of the rope-like drive means 11 .
- FIGS. 1a, b This load-free state is illustrated in FIGS. 1a, b.
- the maximum distance 6 between the footboard 1 and the connecting element 5 increases and causes a tensile force along the rope-like drive means 11, which initiates the unwinding of the rope-like drive means 11 from the first spindle contour 15 on the gear 14.
- the rope-like drive means 11 By means of the rope-like drive means 11 are the The elastic restoring forces released in the running board 1 are converted into a torque that acts on the rotary shaft of the rear skateboard axle 3 in an accelerating manner, as long as the speed of the gear 14 is greater than the speed of the rotary shaft while the rope-like drive means 11 is being unwound from the first spindle contour 15.
Landscapes
- Motorcycle And Bicycle Frame (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021113422.6A DE102021113422A1 (de) | 2021-05-25 | 2021-05-25 | Skateboard |
| PCT/EP2022/061934 WO2022248176A1 (de) | 2021-05-25 | 2022-05-04 | Skateboard mit einem verformbaren trittbrett zum antrieb der räder |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4347065A1 true EP4347065A1 (de) | 2024-04-10 |
| EP4347065B1 EP4347065B1 (de) | 2025-12-31 |
| EP4347065C0 EP4347065C0 (de) | 2025-12-31 |
Family
ID=81928163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22727300.0A Active EP4347065B1 (de) | 2021-05-25 | 2022-05-04 | Skateboard mit einem verformbaren trittbrett zum antrieb der räder |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4347065B1 (de) |
| DE (1) | DE102021113422A1 (de) |
| WO (1) | WO2022248176A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8422458U1 (de) | 1984-07-27 | 1989-11-02 | Sokolowski, Klaus, 2730 Elsdorf | Rollbrett |
| US20020067018A1 (en) | 2000-12-06 | 2002-06-06 | Anthony Shaw | Scooter |
| DE10327970A1 (de) | 2003-06-21 | 2005-01-05 | GÖRGENS, Detlef | Muskelkraftbetriebenes Sport- und Spielgerät |
| DE102004029227A1 (de) * | 2004-06-17 | 2006-01-05 | Völkl, Thomas | Rollwagen |
| DE102005033829B4 (de) * | 2005-07-20 | 2007-04-19 | Werner Berger | Sportgerät, insbesondere Skateboard |
| US8820763B2 (en) | 2007-03-15 | 2014-09-02 | Mindworks Holdings Llc | Device of human conveyance |
| GB2452692A (en) | 2007-07-09 | 2009-03-18 | Steven Spong | Skateboard with its deck providing drive to wheels |
| CA2885006A1 (en) | 2012-09-14 | 2014-03-20 | Bowboard, LLC | Spiral gear system |
-
2021
- 2021-05-25 DE DE102021113422.6A patent/DE102021113422A1/de active Pending
-
2022
- 2022-05-04 EP EP22727300.0A patent/EP4347065B1/de active Active
- 2022-05-04 WO PCT/EP2022/061934 patent/WO2022248176A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022248176A1 (de) | 2022-12-01 |
| EP4347065B1 (de) | 2025-12-31 |
| DE102021113422A1 (de) | 2022-12-01 |
| EP4347065C0 (de) | 2025-12-31 |
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