EP2349742A1 - Roues à roulement - Google Patents

Roues à roulement

Info

Publication number
EP2349742A1
EP2349742A1 EP09809102A EP09809102A EP2349742A1 EP 2349742 A1 EP2349742 A1 EP 2349742A1 EP 09809102 A EP09809102 A EP 09809102A EP 09809102 A EP09809102 A EP 09809102A EP 2349742 A1 EP2349742 A1 EP 2349742A1
Authority
EP
European Patent Office
Prior art keywords
wheel
wheel centre
centre
bearing
air flow
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.)
Withdrawn
Application number
EP09809102A
Other languages
German (de)
English (en)
Inventor
Peter Elovaris
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.)
Namis Engineering Pty Ltd
Original Assignee
Namis Engineering Pty Ltd
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
Priority claimed from AU2008904385A external-priority patent/AU2008904385A0/en
Application filed by Namis Engineering Pty Ltd filed Critical Namis Engineering Pty Ltd
Publication of EP2349742A1 publication Critical patent/EP2349742A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B19/00—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group
    • B60B19/08—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group with lubricating passages, channels, or reservoirs
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B19/00—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group
    • B60B19/10—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group with cooling fins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/02—Hubs adapted to be rotatably arranged on axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B37/00—Wheel-axle combinations, e.g. wheel sets
    • B60B37/10—Wheel-axle combinations, e.g. wheel sets the wheels being individually rotatable around the axles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2316/00—Apparatus in health or amusement
    • F16C2316/30—Articles for sports, games and amusement, e.g. roller skates, toys

Definitions

  • the present invention relates to improved bearing wheels and, in particular, to bearing wheels that are used on skateboards, roller skates and the like.
  • the present invention relates to bearing wheels that have improved air flow through the wheel centre for dissipating excess heat caused by friction when the wheels are being used.
  • the present invention relates to bearing wheels that have improved resistance to heat conduction and expansion of the wheel centre caused by frictional heat generated during use.
  • bearing wheels for use on skateboards
  • the invention is not limited thereto but has wider application.
  • the bearing wheels may be used on roller skates and other movable devices, as well as on stationary devices, such as machinery in which bearing wheels are caused to spin about an immovable axis by frictional contact with moving components of the machinery.
  • bearing is to be understood as including any device, whether or not it is commonly referred to as a bearing, that can tightly receive an axle through a centre hole defined by a stationary inner ring and has an outer ring that can spin around the inner ring by the rolling action of balls, rods or the like that are captured between the inner and outer rings.
  • the bearing wheels used on skateboards often spin for long periods of time at high rotational velocity, and so are affected by heat caused by friction.
  • the frictional heat is generated at the interface of the wheel with the ground.
  • that interface is provided by a polyurethane outer surface which heats up very quickly and, because of its intimate contact with the wheel centre, transfers much of that heat to the bearings which are housed in that centre.
  • the present inventor has found that a better approach to addressing these problems is to provide air flow passageways through the wheel centre and to provide a wheel centre or hub made of a less heat conductive and expansive material than that used at the outer surface of the wheel.
  • an object of the present invention to overcome, or at least substantially ameliorate, the aforementioned shortcomings of the prior art. It is an object of a first aspect of the present invention to provide bearing wheels that have air flow passageways through the wheel centre which improve air flow through the wheel centre for dissipating excess heat caused by friction when the wheels are being used..
  • a bearing wheel comprising:
  • bearings housed in the wheel centre and adapted to allow the wheel centre to spin about an axle around which the bearings are mounted, (c) an outer surface for contacting a frictional surface over which the wheel centre is to spin, and
  • the wheel centre has a main body portion that is offset to one side of the wheel so that one side of the main body portion is substantially in the plane of one side of the outer surface and the other side of the main body portion is recessed from the plane of the other side of the outer surface to define a stepped recess in that other side of the wheel centre.
  • the stepped recess has a face at which there are openings to respective passageways.
  • the stepped recess is useful for generating turbulent air and for allowing that air to be drawn into the passageways through the openings at the face of the stepped recess.
  • the wheel centre is made of aluminium.
  • the outer surface is provided by a polyurethane cap that is secured around the wheel centre.
  • the passageways are preferably a plurality of spaced apart, cylindrically drilled, holes located annularly between an outer portion of the wheel centre and an inner portion of the wheel centre, the polyurethane cap being secured upon the outer portion, and the bearings being housed in respective cavities formed within the inner portion.
  • a bearing wheel comprising:
  • the metal is aluminium.
  • the aluminium wheel centre is useful for tightening the tolerance across the bearing diameters, so promoting longer life of the bearings.
  • the bearing wheel includes air flow passageways formed through the wheel centre, the air flow passageways extending between opposite sides of the wheel centre to allow air flow therethrough to dissipate excess heat caused by friction while the wheel is moving on the frictional surface.
  • the wheel centre has a main body portion that is offset to one side of the wheel so that one side of the main body portion is substantially in the plane of one side of the outer surface and the other side of the main body portion is recessed from the plane of the other side of the outer surface to define a stepped recess in that other side of the wheel centre.
  • the stepped recess has a face at which there are openings to respective passageways.
  • the stepped recess is useful for generating turbulent air and for allowing that air to be drawn into the passageways through the openings at the face of the stepped recess. It is also preferred that the wheel centre in both aspects of the invention has an outer portion upon which the outer surface is secured, the outer portion having a surface profile comprising a projecting circumferential rib having holes therethrough and grooves on opposed sides of the rib, the surface profile enabling the outer surface to form a bonded lock on itself .
  • Figure 1 is a side view of a wheel centre of a bearing wheel according to a first preferred embodiment of the invention
  • Figure 2 is a sectional end view through A-A of the wheel centre shown in Figure 1,
  • Figure 3 is a sectional end view through A-A of the wheel centre of Figure 1 after the bearings have been removed therefrom, with the bearings shown unsectioned alongside the sectioned wheel centre, and with a cap on it,
  • FIG 4 is a similarly sectional end view of the thermoplastic cap that is secured around the wheel centre as shown in Figure 3,
  • Figure 5 is a side view of a wheel centre of a bearing wheel according to a second preferred embodiment of the invention.
  • Figure 6 is an end view showing internal detail of the wheel centre of Figure
  • FIG. 7 is an isometric view of the wheel centre shown in Figures 5 and 6,
  • Figure 8 is a mid-sectional end view of the wheel centre of Figures 5 and 6 with a ground engaging cap secured therearound to form a bearing wheel
  • Figure 9 is a side view of a wheel centre of a bearing wheel according to a third preferred embodiment of the invention.
  • Figure 10 is an end view showing internal detail of the wheel centre of Figure 9,
  • Figure 11 is an isometric view of the wheel centre shown in Figures 9 and 10, and
  • Figure 12 is a mid-sectional end view of the wheel centre of Figures 9 and 10 with a ground engaging cap secured therearound to form a bearing wheel.
  • the bearing wheel 10 includes a wheel centre 12, a pair of bearings 14, 16 housed in the wheel centre and adapted to allow the wheel centre to spin about an axle 18 around which the bearings are mounted.
  • the bearing wheel 10 also includes an outer surface 20 for contacting a fi ⁇ ctional surface, such as the ground, over which the wheel centre is to roll.
  • the wheel centre 12 has a main body portion 24 that is offset to one side of the wheel 10 so that one side 26 of the main body portion is substantially in the plane of one side of the outer surface and the other side 27 of the main body portion is recessed from the plane of the other side of the outer surface to define a stepped recess 28 in that other side of the wheel centre.
  • the stepped recess 28 has a face at which there are openings 30 to respective passageways 22.
  • the stepped recess 28 is useful for generating turbulent air and for allowing that air to be drawn into the passageways 22 through the openings 30 at the face of the stepped recess.
  • the circumferential side wall of the stepped recess may cause a stalling of the turbulent air that promotes air flow into the passageways 22. This results in optimal bearing performance and extended bearing life.
  • the wheel centre is made of aluminium, although other suitable material may be used, such as other metals, non-metals or combinations of metals and non-metals.
  • the outer surface 20 of the bearing wheel 10 is provided by a polyurethane cap 32 that is secured around or upon the wheel centre 12 by, in this embodiment, a pressure fit.
  • the cap may alternatively be made of any hard plastic or durable elastomeric material suitable for use in the present invention.
  • the passageways 22, in his embodiment, consist of twelve spaced apart, cylindrically drilled, holes located annularly between an outer portion 34 of the wheel centre 12 and an inner portion 36 of the wheel centre, the polyurethane cap 32 being secured upon the outer portion, and the bearings 14, 16 being housed in respective cavities 38, 40 formed within the inner portion.
  • the wheel centre 12 may be made of any material that prevents heat conduction and expansion of the wheel centre caused by frictional heat generated while the wheel 10 is moving on the frictional surface.
  • a wheel centre 12 made of aluminium is also useful for tightening the tolerance across the bearing diameters, so also promoting longer life of the bearings 14, 16.
  • the cavities 38, 40 which house bearings 14, 16, respectively, are formed by any suitable means, and are interconnected by a hole 42 formed axially in the wheel centre and through which the axle 18 of, say, a skateboard truck, is located.
  • the diameter of the cavities 38, 40 may suit standard 608 bearings.
  • the diameter of the hole 42 may be 12 mm to permit clearance on axle and bearing spacers.
  • the polyurethane cap 32 is secured upon the outer portion 34 of the wheel centre 12, and the bearings 14, 16 are mounted into their respective cavities 38, 40.
  • the axle 18 is then inserted through a centre hole defined by an inner ring of one of the mounted bearings, then through the hole 42, and then through a centre hole defined by an inner ring of the other mounted bearing.
  • a commonly used Nyloc (TM) nut is fitted to prevent separation of the bearing wheel 10 from the axle 18.
  • the bearing wheel 50 is similar to the bearing wheel 10 except in the way that the cap is secured upon the outer portion of the wheel centre.
  • like features have been given like numerals.
  • the outer portion 52 of the wheel centre 53 has a projecting annular rib 54 surrounded on both sides by circumferential grooves 56, 58.
  • the rib 54 has a plurality of equally spaced apart holes 60 drilled across it.
  • the surface profile of the outer portion 52 allows the cap 62 to be secured upon it in an improved way.
  • the polyurethane flows into the grooves 56, 58 and through the holes 60 to form a bonded lock on itself, thereby ensuring that the cap 62 does not slip off the outer portion 52.
  • the cap 62 is thus securely keyed to the wheel centre 53.
  • the bearing wheel 70 is similar to the bearing wheels 10 and 50 except that it lacks a stepped recess in one side of the wheel centre, and in the way that the cap is secured upon the outer portion of the wheel centre.
  • like features have been given like numerals.
  • the bearing wheel 70 is manufactured to be of smaller width and diameter than the bearing wheels 10 and 50.
  • the bearing wheel 70 lacks a stepped recess in one side of the wheel centre 72.
  • the wheel centre 72 has a main body portion 74 that is symmetrical, and both sides of the main body portion 74 are outermost and present a respective face at which there are openings 76 to respective passageways 77.
  • the outer portion 78 of the wheel centre 72 has a projecting annular rib 80 surrounded on both sides by circumferential shoulders 82, 84, which in turn are surrounded by circumferential grooves 86, 88.
  • the rib 80 has a plurality of equally spaced apart holes 90 drilled across it.
  • the surface profile of the outer portion 78 allows the cap 92 to be secured upon it in an improved way. When, say, molten polyurethane is poured into the mould that forms the cap upon the wheel centre during manufacture, the polyurethane flows into the grooves 86, 88 and through the holes 90 to form a bonded lock on itself, thereby ensuring that the cap 92 does not slip off the outer portion 78. The cap 92 is thus securely keyed to the wheel centre.
  • An advantage in one aspect of the present invention is that the bearing wheels have improved air flow through the wheel centre for dissipating excess heat caused by friction when the wheels are being used.
  • An advantage in another aspect of the present invention is that the bearing wheels have improved resistance to heat conduction and expansion of the wheel centre caused by frictional heat generated during use.

Abstract

Une roue à roulement (50) comporte un centre de roue (53) et des roulements (14, 16) logés dans le centre de roue qui sont conçus pour permettre au centre de roue de tourner autour d’un essieu (18) autour duquel sont montés les roulements. Il y a une surface extérieure (20) entrant en contact avec une surface de frottement sur laquelle doit tourner le centre de roue. Des passages d’écoulement d’air (22) sont formés dans le centre de roue, et s’étendent entre les côtés opposés du centre de roue pour permettre à l’écoulement d’air qui les traverse de dissiper l’excès de chaleur causée par le frottement pendant le déplacement de la roue sur la surface de frottement.
EP09809102A 2008-08-25 2009-08-25 Roues à roulement Withdrawn EP2349742A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2008904385A AU2008904385A0 (en) 2008-08-25 Improved bearing wheels
PCT/AU2009/001096 WO2010022449A1 (fr) 2008-08-25 2009-08-25 Roues à roulement

Publications (1)

Publication Number Publication Date
EP2349742A1 true EP2349742A1 (fr) 2011-08-03

Family

ID=41720700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09809102A Withdrawn EP2349742A1 (fr) 2008-08-25 2009-08-25 Roues à roulement

Country Status (4)

Country Link
US (1) US20110156471A1 (fr)
EP (1) EP2349742A1 (fr)
AU (1) AU2009287417A1 (fr)
WO (1) WO2010022449A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8783699B2 (en) * 2012-05-15 2014-07-22 Daniel Jon GESMER Truck and wheel bearing assembly
FR3140576A1 (fr) * 2022-10-10 2024-04-12 Elwing Tech Systeme de roue motorisee pour skateboard classique

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB871118A (en) * 1958-11-13 1961-06-21 Davies Steel Specialities Ltd Improvements in and relating to roller skate wheels
US3807817A (en) * 1972-07-14 1974-04-30 Pemko Kalamazoo Inc Bearing assembly and method of making same
IT1266132B1 (it) * 1993-09-10 1996-12-20 Nordica Spa Struttura di ruota, particolarmente per pattini o skateboards
JPH07236726A (ja) * 1994-02-25 1995-09-12 Toyo Tire & Rubber Co Ltd ベアリング内蔵型合成樹脂製ローラー
IT1267848B1 (it) * 1994-08-10 1997-02-18 Alfaplastic Srl Ruota per pattini con ruote in linea
US5567019A (en) * 1994-09-23 1996-10-22 U.S. Farathane Corporation Wheel for in-line roller skates
US5573309A (en) * 1994-10-21 1996-11-12 All American Aviation & Mfg. Inc. In-line roller skate wheel assembly
US5725284A (en) * 1994-11-29 1998-03-10 Glenn Boyer Technologies Inc. Wheel for in-line skates
US5922151A (en) * 1994-12-12 1999-07-13 The Hyper Corporation Polyurethane skate wheel with shaped foam core
US5692809A (en) * 1995-05-18 1997-12-02 Hook; Kenneth Wayne In-line skate wheels
US5984328A (en) * 1996-04-25 1999-11-16 Tipton; David W. Two-wheeled skateboard
FR2750880A1 (fr) * 1996-07-12 1998-01-16 Salomon Sa Roue ventillee notamment pour patin a roues en ligne
US6309108B1 (en) * 1997-07-11 2001-10-30 Richard Wershe Bearing spacer for in-line skate
US5979992A (en) * 1997-10-27 1999-11-09 Calderone; Anthony M Hub and wheel assembly for an in-line skate
US6655747B2 (en) * 2001-07-20 2003-12-02 Bravo Sports In-line roller skate wheel
CA2528072C (fr) * 2005-11-28 2014-05-27 Honey Bee Manufacturing, Ltd. Ensemble a roues

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010022449A1 *

Also Published As

Publication number Publication date
US20110156471A1 (en) 2011-06-30
WO2010022449A1 (fr) 2010-03-04
AU2009287417A1 (en) 2010-03-04

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