WO2005115567A1 - Undercarriage for a roller skate for a skateboard/scooter board - Google Patents

Undercarriage for a roller skate for a skateboard/scooter board Download PDF

Info

Publication number
WO2005115567A1
WO2005115567A1 PCT/CN2005/000732 CN2005000732W WO2005115567A1 WO 2005115567 A1 WO2005115567 A1 WO 2005115567A1 CN 2005000732 W CN2005000732 W CN 2005000732W WO 2005115567 A1 WO2005115567 A1 WO 2005115567A1
Authority
WO
WIPO (PCT)
Prior art keywords
steering axle
swivelling axis
undercarriage
steering
support
Prior art date
Application number
PCT/CN2005/000732
Other languages
French (fr)
Inventor
Martin Preining
Original Assignee
Marco Skates Limited
Micro Mobility Systems Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Marco Skates Limited, Micro Mobility Systems Ag filed Critical Marco Skates Limited
Priority to EP05749577A priority Critical patent/EP1755751A4/en
Publication of WO2005115567A1 publication Critical patent/WO2005115567A1/en

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
    • 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
    • A63C17/01—Skateboards
    • A63C17/014—Wheel arrangements
    • A63C17/016—Wheel arrangements with wheels arranged in one track
    • 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
    • A63C17/04—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs
    • A63C17/06—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs single-track type
    • A63C17/061—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs single-track type with relative movement of sub-parts on the chassis
    • A63C17/064—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs single-track type with relative movement of sub-parts on the chassis comprising steered wheels, i.e. wheels supported on a vertical 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
    • A63C17/22—Wheels for roller skates
    • A63C17/223—Wheel hubs
    • 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
    • A63C17/22—Wheels for roller skates
    • A63C17/226—Wheel mounting, i.e. arrangement connecting wheel and axle mount

Definitions

  • the invention refers to an undercarriage for a roller skate or a skateboard / scooter board with at least one steering axle which pivots on a swivelling axis provided in a retaining framework.
  • the swivelling axis slants in or against the direction of travel.
  • an undercarriage (AT 005006 U1 ) exists with at least one steering axle pivoted on a swivelling axis provided in a retaining framework.
  • the swivelling axis slants in or against the direction of travel and goes with a radial distance to the steering axis. Due to the slant of the swivelling axis, a swivelling of the foot board around a longitudinal axis causes an additional swivelling adjustment of the steering axle that is supported on the ground by wheels on both sides, around an axle which is positioned in vertical position to the ground, resulting in a corresponding deflection of the steering mechanism.
  • the invention is intended to provide an undercarriage design of the above mentioned kind that is aimed at an importantly reduced overall width and road performance, mainly comparable to a one track undercarriage.
  • the invention solves this problem in the way that the swivelling axis, which is integrated in the steering axle, is arranged on a support forming part of a bearing fork.
  • the support is axially retained in the steering axle in a recess which is vertically positioned to the swivelling axis and provides clearance for the steering turn. Since, due to these arrangements, the swivelling axis within the steering axle is arranged on a support, which is axially retained in the steering axle, the steering axle can be of reduced length, since it is required to only take up the bearing of at least one wheel that encloses the steering axle and the swivelling axis and is integrated in the bearing fork for the support of the swivelling axis.
  • the recess in the steering axle for the retention of the support of the swivelling axis must, however, allow a horizontal-swing of the support determining the deflection of the steering mechanism in relation to the steering axle.
  • a simple, narrow overall width results for the undercarriage which allows it to be used not only for skateboards / scooter boards, but also for roller skates.
  • the overall width is mainly determined by the width of its rest.
  • the overall width is mainly determined by their axial distance.
  • the width of the wheel rest and the axial distance of the wheels respectively are dictated by the support of the steering axis on the ground needed for the steering and for tilt resistance. This can already be achieved with a comparably short wheel width or a small distance of the wheels, thereby achieving a road performance that can otherwise only be achieved by one-track undercarriages.
  • the wheel coating may exceed the axial length of the steering axle, thus the wheel coating juts out on both sides over the face of the steering axle.
  • the reduced length of the steering axle, which is set back to the wheel coating allows, in spite of its restricted diameter, enough steering movement in relation to the support which is retained in the steering axle within the provided clearance between the support of the steering axle and the steering axle recess taking up the support.
  • the geometrical axes of the swivelling axis and the steering axle may cut across each other.
  • Such an arrangement can do without the reset forces during a steering action, whereas of course, the corresponding reset forces can be provided, for example by spring elements between the support for the swivelling axis and the steering axle.
  • the drawing shows an example of the object of invention.
  • FIG. 1 an undercarriage according to the invention for a roller skate in a simplified, partial cross section view Fig 2 a larger scale profile of the undercarriage in the area of the swivelling axis Fig. 3 a section according to line Ill-Ill of fig. 2 Fig. 4 a front view of a wheel and its running carriage according to the invention in steering lock position Fig 5 a skateboard / scooter board with an undercarriage according to the invention in a simplified lateral view
  • the undercarriage assembled on a roller skate 1 shows a retaining framework 2 that takes up a front and rear wheel 3.
  • These wheels consist of a wheel body 4 with a basically cylindrical coating 5 of elastic rubber material.
  • the wheel body 4 pivots by means of two bearings 6 on a steering axle 7, which itself can be swivelled around a swivelling axis 8.
  • the steering axle 7 retains the swivelling axis 8 in the bushings 9.
  • the swivelling axis is assembled on a support 10 which is retained in the steering axle 7 in a recess 11 vertically positioned to the swivelling axis 8 while providing sufficient clearance to swivel steering axle 7 around the swivelling axis 8 for a steering turn without obstruction by support 10.
  • Support 10 itself is retained in the • lateral sides 12 of a fork 13 forming part of the retaining framework 2. Since the swivelling axis 8 slants in relation to the direction of travel, as especially illustrated by fig.
  • a horizontal-swing of the retaining framework around an axis going in the direction of travel causes a swivelling adjustment of the steering axle around the swivelling axis 8, since the steering axle 7 which is supported on the ground by means of wheel 3 cannot join in the swivelling movement of the swivelling axis 8 which is fixed on the support.
  • the only possible compensation of movement is a turn of the steering axle 7 around an axis positioned vertically to the ground as graphically illustrated in fig. 4.
  • a steering movement, for the front as well as for the rear wheel 3, can be produced by a bending movement to the sides of the retaining framework 2 by means of the roller skate 1. It is probably unnecessary to particularly stress that not both wheels 3 have to be supported on a steering axle.
  • an inclination to the sides of the retaining framework 2 must be provided. This can be guaranteed by an unguided wheel that allows an inclination to the sides or by a wheel that is supported with limited swivelling clearance in relation to the support around an axis in the direction of travel.
  • wheel 3 of each steering axle 7 could be replaced by two conventional wheels, the axial distance of which corresponds with the length of the contact area of the cylindrical coating 5 of one single wheel 3.
  • the use of the undercarriage according to the invention is not only restricted to roller skates. Undercarriages according to the invention can also be used with advantage for skateboards / scooter boards where the stepboard 14 is provided at both ends with a steering axle 7, as described above.
  • the undercarriage is formed by two separate retaining frameworks 2 that are fixed to the bottom side of the stepboard 14 and form a fork to carry the support 10 as described in correlation with fig. 1 to 4.

Abstract

The description refers to an undercarriage for a roller skate (1) or a skateboard/scooter board with at least one steering axle (7) which pivots on a swivelling axis (8) provided in a retaining framework (2). The swivelling axis slants in or against the direction of travel. In order to provide advantageous design data, it is suggested that the swivelling axis, (8) which is integrated in the steering axle, is placed on a bearing fork (13) of the retaining framework support (10). The support is axially retained in the steering axle (7) in a recess (11) which is vertically positioned to the swivelling axis (8) and which provides clearance for the steering turn.

Description

UNDERCARRIAGE FOR A ROLLER SKATE OR A SKATEBOARD/ SCOOTER BOARD
FIELD OF THE INVENTION
The invention refers to an undercarriage for a roller skate or a skateboard / scooter board with at least one steering axle which pivots on a swivelling axis provided in a retaining framework. The swivelling axis slants in or against the direction of travel.
BACKGROUND OF THE INVENTION
In order to achieve easy steering of, for example a skateboard / scooter board, an undercarriage (AT 005006 U1 ) exists with at least one steering axle pivoted on a swivelling axis provided in a retaining framework. The swivelling axis slants in or against the direction of travel and goes with a radial distance to the steering axis. Due to the slant of the swivelling axis, a swivelling of the foot board around a longitudinal axis causes an additional swivelling adjustment of the steering axle that is supported on the ground by wheels on both sides, around an axle which is positioned in vertical position to the ground, resulting in a corresponding deflection of the steering mechanism. For a better control of this steering mechanism, the rotation of the steering axle, starting from the position for the straight ahead drive and going to both stop sides, takes place against an elastic force originating from a leaf spring which is in parallel position to the steering axle. The leaf spring sustains a sliding piece which is assigned to a retaining framework taking up the swivelling axis. This existing design requires a two track undercarriage that, due to its overall width, can only be fitted to scooters or skateboards / scooter boards.
SPECIFIC OF THE INVENTION
The invention is intended to provide an undercarriage design of the above mentioned kind that is aimed at an importantly reduced overall width and road performance, mainly comparable to a one track undercarriage.
The invention solves this problem in the way that the swivelling axis, which is integrated in the steering axle, is arranged on a support forming part of a bearing fork. The support is axially retained in the steering axle in a recess which is vertically positioned to the swivelling axis and provides clearance for the steering turn. Since, due to these arrangements, the swivelling axis within the steering axle is arranged on a support, which is axially retained in the steering axle, the steering axle can be of reduced length, since it is required to only take up the bearing of at least one wheel that encloses the steering axle and the swivelling axis and is integrated in the bearing fork for the support of the swivelling axis. The recess in the steering axle for the retention of the support of the swivelling axis must, however, allow a horizontal-swing of the support determining the deflection of the steering mechanism in relation to the steering axle. Under these conditions, a simple, narrow overall width results for the undercarriage which allows it to be used not only for skateboards / scooter boards, but also for roller skates. If a single wheel is provided, the overall width is mainly determined by the width of its rest. If two wheels are provided, the overall width is mainly determined by their axial distance. The width of the wheel rest and the axial distance of the wheels respectively are dictated by the support of the steering axis on the ground needed for the steering and for tilt resistance. This can already be achieved with a comparably short wheel width or a small distance of the wheels, thereby achieving a road performance that can otherwise only be achieved by one-track undercarriages.
If only a single wheel is used for the tilt resistant support of the steering axle on the ground, it is recommended to design the wheel with a basically cylindrical coating. In order to achieve, in spite of a compact design, an adequate axial length of the cylindrical coating, the length of the wheel coating may exceed the axial length of the steering axle, thus the wheel coating juts out on both sides over the face of the steering axle. The reduced length of the steering axle, which is set back to the wheel coating, allows, in spite of its restricted diameter, enough steering movement in relation to the support which is retained in the steering axle within the provided clearance between the support of the steering axle and the steering axle recess taking up the support. In order to obtain a neutral steering performance of the undercarriage, the geometrical axes of the swivelling axis and the steering axle may cut across each other. Such an arrangement can do without the reset forces during a steering action, whereas of course, the corresponding reset forces can be provided, for example by spring elements between the support for the swivelling axis and the steering axle.
BRIEF DESCRIPTION OF THE DRAWINGS
The drawing shows an example of the object of invention.
Fig. 1 an undercarriage according to the invention for a roller skate in a simplified, partial cross section view Fig 2 a larger scale profile of the undercarriage in the area of the swivelling axis Fig. 3 a section according to line Ill-Ill of fig. 2 Fig. 4 a front view of a wheel and its running carriage according to the invention in steering lock position Fig 5 a skateboard / scooter board with an undercarriage according to the invention in a simplified lateral view
ENBODI ENTS
According to fig. 1 the undercarriage assembled on a roller skate 1 (graphically illustrated with dot dashed lines) shows a retaining framework 2 that takes up a front and rear wheel 3. These wheels consist of a wheel body 4 with a basically cylindrical coating 5 of elastic rubber material. As especially shown in fig. 2 and 3, the wheel body 4 pivots by means of two bearings 6 on a steering axle 7, which itself can be swivelled around a swivelling axis 8. The steering axle 7 retains the swivelling axis 8 in the bushings 9. The swivelling axis is assembled on a support 10 which is retained in the steering axle 7 in a recess 11 vertically positioned to the swivelling axis 8 while providing sufficient clearance to swivel steering axle 7 around the swivelling axis 8 for a steering turn without obstruction by support 10. Support 10 itself is retained in the • lateral sides 12 of a fork 13 forming part of the retaining framework 2. Since the swivelling axis 8 slants in relation to the direction of travel, as especially illustrated by fig. 2, a horizontal-swing of the retaining framework around an axis going in the direction of travel causes a swivelling adjustment of the steering axle around the swivelling axis 8, since the steering axle 7 which is supported on the ground by means of wheel 3 cannot join in the swivelling movement of the swivelling axis 8 which is fixed on the support. The only possible compensation of movement is a turn of the steering axle 7 around an axis positioned vertically to the ground as graphically illustrated in fig. 4. A steering movement, for the front as well as for the rear wheel 3, can be produced by a bending movement to the sides of the retaining framework 2 by means of the roller skate 1. It is probably unnecessary to particularly stress that not both wheels 3 have to be supported on a steering axle. If only one steering axle is used, an inclination to the sides of the retaining framework 2 must be provided. This can be guaranteed by an unguided wheel that allows an inclination to the sides or by a wheel that is supported with limited swivelling clearance in relation to the support around an axis in the direction of travel.
Since the steering movement of the steering axle depends on its tilt resistant support to the ground, wheel 3 of each steering axle 7 could be replaced by two conventional wheels, the axial distance of which corresponds with the length of the contact area of the cylindrical coating 5 of one single wheel 3.
As can be seen from fig. 5, the use of the undercarriage according to the invention is not only restricted to roller skates. Undercarriages according to the invention can also be used with advantage for skateboards / scooter boards where the stepboard 14 is provided at both ends with a steering axle 7, as described above. For this purpose, the undercarriage is formed by two separate retaining frameworks 2 that are fixed to the bottom side of the stepboard 14 and form a fork to carry the support 10 as described in correlation with fig. 1 to 4.

Claims

claims
1. An undercarriage for a roller skate or a skateboard / scooter board with at least one steering axle which pivots on a swivelling axis provided in a retaining framework. The swivelling axis slants in or against the direction of travel. The undercarriage is characterized in the way that the swivelling axis (8), which is integrated in the steering axle, is placed on a bearing fork (13) of the retaining framework support (10). The support is axially retained in the steering axle (7) in a recess (11 ) which is vertically positioned to the swivelling axis (8) and which provides clearance for the steering turn.
2. Undercarriage according to claim 1 characterized in the way that a wheel (3) being positioned on the steering axle is provided with a basically cylindrical coating (5) with an axial length exceeding the axial length of the steering axle.
3. Undercarriage according to claim 1 or 2 characterized in the way that the two geometrical axes of the swivelling axis (8) and the steering axle (7) cut across each other.
PCT/CN2005/000732 2004-05-27 2005-05-26 Undercarriage for a roller skate for a skateboard/scooter board WO2005115567A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05749577A EP1755751A4 (en) 2004-05-27 2005-05-26 Undercarriage for a roller skate for a skateboard/scooter board

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT9172004A AT500652B1 (en) 2004-05-27 2004-05-27 CHASSIS FOR A ROLLING SHOE OR ROLLERBOARD
ATA917/2004 2004-05-27

Publications (1)

Publication Number Publication Date
WO2005115567A1 true WO2005115567A1 (en) 2005-12-08

Family

ID=35450681

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2005/000732 WO2005115567A1 (en) 2004-05-27 2005-05-26 Undercarriage for a roller skate for a skateboard/scooter board

Country Status (4)

Country Link
EP (1) EP1755751A4 (en)
CN (1) CN200977385Y (en)
AT (1) AT500652B1 (en)
WO (1) WO2005115567A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016153836A1 (en) * 2015-03-25 2016-09-29 Jacob Barnes Wheeled ski

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4138127A (en) * 1977-11-08 1979-02-06 Mattel, Inc. Two wheel roller skate or the like
US5263725A (en) * 1992-02-24 1993-11-23 Daniel Gesmer Skateboard truck assembly
JPH09168628A (en) * 1995-11-23 1997-06-30 Tecnica Spa Roller skate
CN1195566A (en) * 1998-04-07 1998-10-14 穆卫平 Roller skate board
AT5006U1 (en) * 2001-01-31 2002-02-25 Zeug Design G M B H CHASSIS FOR A SCOOTER OR SCOOTER

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Publication number Priority date Publication date Assignee Title
US3389922A (en) * 1965-10-22 1968-06-25 Edward H. Eastin Amusement and sporting device
DE68924509T2 (en) * 1988-08-01 1996-06-13 Stefan Kubierschky Chassis for a steerable element, especially for a roller skate.
WO1992018210A2 (en) * 1991-04-18 1992-10-29 Stefan Kubierschky Sporting device steerable by weight displacement and a steerable wheel assembly for use therein
US5199727A (en) * 1992-03-03 1993-04-06 Lai Kuo J Steerable wheel assembly for a roller skate
EP0801587A2 (en) * 1993-08-02 1997-10-22 Stefan Kubierschky In-line skate and wheel and stopper therefor
NL9401369A (en) * 1994-08-24 1996-04-01 Andreas Petrus Bergmans In-line skate wheel structure and front wheel brake- stopping system
DE19953176A1 (en) * 1999-11-04 2001-05-23 Christian Zwinger Roller board
US6637827B2 (en) * 2000-02-28 2003-10-28 Myron Stuart Hurwitz Generation of in-line skates and skate-boards wtih safety “edging friction control™”
DE10013413C2 (en) * 2000-03-17 2003-06-05 Harry Gaus Roller sports equipment
GB2389318A (en) * 2002-06-06 2003-12-10 Clive John Godfrey A mountain board steering system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4138127A (en) * 1977-11-08 1979-02-06 Mattel, Inc. Two wheel roller skate or the like
US5263725A (en) * 1992-02-24 1993-11-23 Daniel Gesmer Skateboard truck assembly
JPH09168628A (en) * 1995-11-23 1997-06-30 Tecnica Spa Roller skate
CN1195566A (en) * 1998-04-07 1998-10-14 穆卫平 Roller skate board
AT5006U1 (en) * 2001-01-31 2002-02-25 Zeug Design G M B H CHASSIS FOR A SCOOTER OR SCOOTER

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1755751A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016153836A1 (en) * 2015-03-25 2016-09-29 Jacob Barnes Wheeled ski
US9643074B2 (en) 2015-03-25 2017-05-09 Jacob Barnes Wheeled ski

Also Published As

Publication number Publication date
AT500652A1 (en) 2006-02-15
AT500652B1 (en) 2006-10-15
EP1755751A1 (en) 2007-02-28
EP1755751A4 (en) 2008-08-13
CN200977385Y (en) 2007-11-21

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