US20230330510A1 - Skateboard with independent suspension and steering - Google Patents

Skateboard with independent suspension and steering Download PDF

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Publication number
US20230330510A1
US20230330510A1 US18/007,309 US202118007309A US2023330510A1 US 20230330510 A1 US20230330510 A1 US 20230330510A1 US 202118007309 A US202118007309 A US 202118007309A US 2023330510 A1 US2023330510 A1 US 2023330510A1
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US
United States
Prior art keywords
suspension
knuckle
steering
board
skateboard
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.)
Pending
Application number
US18/007,309
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English (en)
Inventor
Miguel MORGADO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcance Gradual Lda
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Alcance Gradual Lda
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Filing date
Publication date
Application filed by Alcance Gradual Lda filed Critical Alcance Gradual Lda
Assigned to ALCANCE GRADUAL, LDA reassignment ALCANCE GRADUAL, LDA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MORGADO, Miguel
Publication of US20230330510A1 publication Critical patent/US20230330510A1/en
Pending legal-status Critical Current

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    • 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
    • A63C17/0046—Roller skates; Skate-boards with shock absorption or suspension system
    • 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
    • A63C17/013—Skateboards with steering mechanisms with parallelograms, follow up wheels or direct steering action
    • 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
    • A63C17/017—Production or mounting thereof
    • 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
    • A63C2203/20—Shock or vibration absorbing

Definitions

  • the present disclosure relates to a skateboard comprising a suspension assembly and a steering assembly for steering and connecting two parallel wheels to the board with independent suspension and steering.
  • skateboards that comprise an independent suspension from the turning system, having each wheel its own independent suspension with wheel travel from 30 mm to 50 mm.
  • this skateboards are heavy, being 3 to 4 times heavier than other skateboards as they require an independent structure that is always parallel to the ground and another that rotates as a normal skateboard does. In the cases where two structures are not built, they could not isolate the turning from the camber of the wheel.
  • Another type of solution is one that is light but has a very small wheel travel and affects the steering system. These systems are substantially cheaper but interfere with the steering, creating a much more unstable and less responsive system.
  • the patent document EP0933103 discloses a wheel suspension for a skateboard, fitted with four wheels or runners, having a steering linkage arm in a rotary mounting at each wheel or runner, along the line of the skateboard as a longitudinal steering member.
  • the longitudinal steering members are linked to the superstructure by two auxiliary steering linkages for a cardanic movement action.
  • the patent document US2018/0185738 discloses a bifurcated truck in a laterally-sliding board wheel assembly, in which the board can easy travel forward, backwards, sideways or in any other directional combination.
  • the wheel assembly employs a bifurcated truck system having two independent suspension arms, both operating independently from one another and from the board's castering wheels.
  • Prior art disclosures also have the problem of requiring further structures for example, kept always parallel to the ground which results in a much heavier skate as it requires an additional large and rigid structure.
  • Another prior art problem is that the steering system is controlled by an external device, normally a servo motor.
  • the present disclosure relates to a skateboard comprising a suspension that works independently from the steering system.
  • a skateboard comprising a suspension that works independently from the steering system.
  • multiple points are shared with the centre axis of the skateboard, resulting on a considerably different system.
  • the present disclosure relates to a skateboard comprising a board comprising a suspension assembly and a steering assembly for steering and connecting two parallel wheels to the board with independent suspension and steering; wherein the suspension assembly comprises a support frame rotatably coupled to an underside of the board; the steering assembly comprises a steering crank fixed to and extending from an underside of the board;
  • the suspension assembly is a double-wishbone suspension.
  • the upper and lower suspension arms are ‘A’-shaped arms.
  • the spindle is rigidly mounted on the knuckle.
  • the spring is coupled between the lower suspension arm and the board, for resiliently holding the knuckle.
  • the spring is coupled by fastening means, particularly bolts.
  • the knuckle comprises a knuckle shaft arranged between the pivotable coupling to the upper suspension arm and the pivotable coupling to the lower suspension arm.
  • the knuckle shaft is pivotably coupled to the upper suspension arm and to the lower suspension arm by a resilient pivotable coupling.
  • the resilient pivotable coupling comprises a resilient ring arranged around the knuckle shaft and within the respective suspension arm.
  • the tie rod of each wheel is an adjustable length rod.
  • the tie rod of each wheel comprises an inner tie rod and an outer tie rod arranged telescopically.
  • the upper suspension arm and the lower suspension arm are arranged to remain parallel as the arms pivot.
  • the skateboard further comprises a resilient body attached between the board and the support frame for resiliently providing resistance to the turning of the board in respect of the support frame.
  • the body is made of an elastic polymer, in particular the elastic polymer is polyurethane.
  • the steering assembly and the suspension assembly are made of carbon fibre or steel or aluminium.
  • the board comprises a front part and a back part, wherein the suspension assembly and a steering assembly are located at the front part or the back part.
  • each said front and back part comprises a suspension assembly and a steering assembly as previously described.
  • the assemblies of the front part and assemblies of the back part are independent. Thus, being only joined by the board.
  • FIG. 1 Schematic representation of a back view of an embodiment of the skateboard.
  • FIG. 2 Schematic representation of back view of an embodiment of the skateboard when an obstacle is underneath of one wheel.
  • FIG. 3 Side view representation of a lateral view of an embodiment of the skateboard.
  • FIG. 4 Schematic representation of a perspective view of an embodiment of the skateboard.
  • FIG. 5 Schematic representation of a front view of an embodiment of the skateboard.
  • FIG. 6 Schematic representation of a perspective view of an embodiment of the skateboard.
  • FIG. 7 Schematic representation of a back view of an embodiment of the skateboard.
  • FIG. 8 Schematic representation of a perspective view of an embodiment of the skateboard.
  • FIG. 9 Schematic representation of a steering assembly of an embodiment of the skateboard.
  • FIG. 10 Schematic representation of a steering assembly of an embodiment of the skateboard when is turning.
  • FIG. 11 Schematic representation of a suspension assembly of the skateboard.
  • FIG. 12 Schematic representation of a suspension assembly of the skateboard when an obstacle is underneath a wheel.
  • FIG. 13 Schematic representation of a suspension mechanism of an embodiment of the skateboard.
  • FIG. 14 Schematic representation of the steering mechanism of an embodiment of the skateboard.
  • the present disclosure relates to a skateboard comprising a board 2 comprising a suspension assembly and a steering assembly for steering and connecting two parallel wheels 3 to the board with independent suspension and steering; wherein the suspension assembly comprises a support frame 8 rotatably coupled to an underside of the board; the steering assembly comprises a steering crank 12 fixed to and extending from an underside of the board;
  • FIG. 1 shows a schematic representation of a back view of an embodiment of a skateboard 1 where: 2 represents a board, 3 represents two parallel wheels, 4 represents a tie rod, 5 represents a spring, 6 represents a spring bolt, 7 a represents an upper suspension arm and 7 b represents a lower suspension arm and 14 represents a body.
  • FIG. 2 shows a schematic representation of the back view of an embodiment of a skateboard 1 when an obstacle appears, like a bump or a rock for example, on the right side
  • 2 represents a board
  • 3 represents two parallel wheels
  • 4 a represents an inner tie rod
  • 4 b represents an outer tie rod
  • 5 represents a spring
  • 6 represents a spring bolt
  • 7 a represents an upper suspension arm
  • 7 b represents a lower suspension arm
  • 9 represents the knuckle and 14 a body. It is shown that the suspension does not affect the steering system.
  • the left and right wheel are at different heights but the wheels are not turning.
  • FIG. 3 shows a side view representation of a lateral view of an embodiment of a skateboard 1 where: 3 two parallel wheels, 4 represents a tie rod right, 5 represents a spring.
  • FIG. 4 shows a side view representation of a perspective view an embodiment of a skateboard 1 where: 4 a represents an inner rod, 4 b represents an outer tie rod, 5 represents a spring, 16 represents a first ball joint, 10 represents a second ball joint 7 represents a suspension arm.
  • the board comprises a front side and a backside where in the front side of the board, the suspension assembly for each of the two parallel wheels 3 comprises one spring and in the backside, the suspension assembly for each of the two parallel wheels 3 also comprises one spring.
  • the spring 5 are coupled to the board 2 .
  • FIG. 5 shows a front view of an embodiment of a skateboard 1 where: 4 a represents an inner tie rods 4 b represents an outer tie rod, 7 b represents a lower suspension arm, 16 represents a first ball joint, 10 represents a second ball joint, 11 represents a tie rod socket.
  • FIG. 6 shows a perspective view of an embodiment of a skateboard 1 where: 4 represents a tie rods and 7 b represents a lower suspension arm and 7 a represents an upper suspension arm.
  • FIG. 7 shows a back-view representation of an embodiment of a skateboard 1 when the skateboard is turning. It can be seen that the board is leaned to the right side.
  • FIG. 8 shows a perspective view of an embodiment of a skateboard 1 when the skateboard is turning where 8 is a support frame, 13 is a spindle.
  • the spindle is responsible to rotatably support the wheel.
  • FIG. 9 shows a representation of a steering mechanism of a skateboard where: 2 represents a board, 3 represents two parallel wheels, 4 represents a tie rod, 9 represents a knuckle, 16 represents the first ball joint, 10 represents the second ball joint and 12 represents the steering crank.
  • FIG. 10 shows a representation of a steering mechanism of a skateboard where: 2 represents a board, 4 represents a tie rod, 9 represents a knuckle for the wheel, 12 represents the steering crank and 13 is the spindle. It is shown that when the wheel 3 is rotating the steering crank 12 rotates in respect of the support frame.
  • FIG. 11 shows a schematic representation of a suspension mechanism of a skateboard where: 2 represents the board, 3 represents a wheel, 7 a represents the upper suspension arms, 7 b represents a lower suspension arm, 8 represents a support frame, 9 represents a knuckle and 13 a spindle.
  • FIG. 12 shows a schematic representation of a suspension mechanism of a skateboard where: 2 represents the board, 3 represents a wheel, 7 a represents an upper suspension arms, 8 represents a support frame, 9 represents a knuckle and 12 represents an obstacle.
  • This figure shows that when an obstacle 15 appears, the user will lean the board sideway 2 for the wheel 3 to pass over said object, and the respective upper 7 a and lower 7 b arms of the suspension of the side where the obstacle is will go up, keeping the knuckle parallel to the support frame.
  • FIG. 13 shows a schematic representation of the suspension mechanism where, despite rotation of the board in respect of the support frame, the suspension structure is not altered.
  • FIG. 14 shows a schematic representation of the steering mechanism, where, despite suspension movement of a wheel caused by an obstacle 15 , the steering structure is not altered (i.e. there is no wheel turning).
  • the suspension assembly and the steering assembly are independent. These embodiments show that the suspension assembly does not influence the steering assembly since they are completely independent of each other.
  • the centre of rotation of the whole assembly is concentrated on the centre of the board. Surprisingly, this way it is possible to pass over bumps without affecting the steering assembly and the camber and it is possible to turn without affecting the camber or the suspension assembly.
  • the bolt joint may comprise an elastic polymer.
  • the polymer is polyurethane.
  • the support frame 8 is rotatably coupled and is always perpendicular to the wheel, even when the wheel is moving upwards and the board is tilted.
  • the second ball joint 10 and tie rod socket 11 moves upwards and downwards.
  • the springs of the suspension assembly of each wheel cancel each other when turning/pivoting the board, not offering resistance while turning. This happens because both of them have preload and while turning, one of the springs gets compressed and the other extends, so one helps the other. Although the spring getting extended has less energy stored and the spring being compressed is increasing the stored energy, the resulting force is balanced due to the change in the angle of the springs during the movement. The change in the angle changes the ratio wheel/spring travel that is why it balances the force. This way the springs of two lateral wheels only offer resistance for the suspension assembly and cancel each other for the turning/steering assembly.
  • the steering assembly and the suspension assembly are smaller, lighter and allows the use of normal skateboards wheels. While comparing to the other kind of simpler systems it has basically the same weight of a normal longboard truck while giving a full suspension system with a real wheel travel of 46 mm.

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US18/007,309 2020-07-30 2021-07-29 Skateboard with independent suspension and steering Pending US20230330510A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PT116615 2020-07-30
PT11661520 2020-07-30
PCT/IB2021/056929 WO2022024036A1 (en) 2020-07-30 2021-07-29 Skateboard with independent suspension and steering

Publications (1)

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US20230330510A1 true US20230330510A1 (en) 2023-10-19

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US18/007,309 Pending US20230330510A1 (en) 2020-07-30 2021-07-29 Skateboard with independent suspension and steering

Country Status (4)

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US (1) US20230330510A1 (zh)
EP (1) EP4188565A1 (zh)
TW (1) TW202208039A (zh)
WO (1) WO2022024036A1 (zh)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5513865A (en) * 1991-09-03 1996-05-07 Paul E. Brooks Simplified steering mechanism having both steering and tilting capabilities
US20100327546A1 (en) * 2009-06-24 2010-12-30 Carvedog Llc Steering assemblies, vehicles including a steering assemblies, and methods of steering a vehicle
US20160206949A1 (en) * 2013-08-27 2016-07-21 Bajaboard International Pty Ltd Apparatus for board sports
US20190351314A1 (en) * 2018-03-30 2019-11-21 Alan K Lewis Lean-steered mountain board and method of operation
US20210046994A1 (en) * 2018-04-23 2021-02-18 Audi Ag Scooter and method for operating a scooter
US20210171132A1 (en) * 2019-12-06 2021-06-10 James Matthew Underwood Stand up vehicle
US20220331686A1 (en) * 2019-07-09 2022-10-20 Bajaboard International Pty Ltd Skateboard suspension
US11684842B2 (en) * 2020-06-29 2023-06-27 Karsten Manufacturing Corporation Skateboards with a multi-wheel truck

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19803412A1 (de) 1998-01-29 1999-08-05 Bayerische Motoren Werke Ag Radaufhängung für Rollbretter
CN105073209B (zh) * 2013-02-26 2017-06-16 R·小利宁格 具有悬架机构的滑板支架装置和脚轮
US10421024B2 (en) * 2015-02-13 2019-09-24 Elaine Stewart Plush standing doll and backpack dollhouse
US10322332B2 (en) 2016-12-30 2019-06-18 Steen Strand Laterally-sliding board with bifurcated trucks
CN109731318A (zh) * 2019-02-24 2019-05-10 宁波市甬陵橡塑有限公司 一种运动滑板的制作方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5513865A (en) * 1991-09-03 1996-05-07 Paul E. Brooks Simplified steering mechanism having both steering and tilting capabilities
US20100327546A1 (en) * 2009-06-24 2010-12-30 Carvedog Llc Steering assemblies, vehicles including a steering assemblies, and methods of steering a vehicle
US20160206949A1 (en) * 2013-08-27 2016-07-21 Bajaboard International Pty Ltd Apparatus for board sports
US20190351314A1 (en) * 2018-03-30 2019-11-21 Alan K Lewis Lean-steered mountain board and method of operation
US20210046994A1 (en) * 2018-04-23 2021-02-18 Audi Ag Scooter and method for operating a scooter
US20220331686A1 (en) * 2019-07-09 2022-10-20 Bajaboard International Pty Ltd Skateboard suspension
US20210171132A1 (en) * 2019-12-06 2021-06-10 James Matthew Underwood Stand up vehicle
US11684842B2 (en) * 2020-06-29 2023-06-27 Karsten Manufacturing Corporation Skateboards with a multi-wheel truck

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WO2022024036A1 (en) 2022-02-03
TW202208039A (zh) 2022-03-01
EP4188565A1 (en) 2023-06-07

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Effective date: 20230130

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