EP0898992A1 - Rad für Rollschuhe mit äusseren Streifen - Google Patents

Rad für Rollschuhe mit äusseren Streifen Download PDF

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Publication number
EP0898992A1
EP0898992A1 EP98114264A EP98114264A EP0898992A1 EP 0898992 A1 EP0898992 A1 EP 0898992A1 EP 98114264 A EP98114264 A EP 98114264A EP 98114264 A EP98114264 A EP 98114264A EP 0898992 A1 EP0898992 A1 EP 0898992A1
Authority
EP
European Patent Office
Prior art keywords
tread
wheel
wheel according
layer
hub
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Withdrawn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
EP98114264A
Other languages
English (en)
French (fr)
Inventor
Philippe Galy
Emmanuel Joumard
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.)
Salomon SAS
Original Assignee
Salomon SAS
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 Salomon SAS filed Critical Salomon SAS
Publication of EP0898992A1 publication Critical patent/EP0898992A1/de
Withdrawn legal-status Critical Current

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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
    • A63C17/22—Wheels for roller skates
    • A63C17/223—Wheel hubs

Definitions

  • the invention relates to a roller skate wheel, in particular a skate whose wheels or "casters" are in line.
  • the wheels are skate bodies which must be simple and robust. Since the wheels come in a big part in the price of skates, their cost must be optimized.
  • They usually consist of one or more layers molded on a hub.
  • the layer in contact with the ground i.e. the tread
  • the materials very adhesives like rubber are heavier than others materials which can also be used to form the layer bearing such as TPU or PUR.
  • a wheel with a tread has a central part (in axial direction) relatively hard, flanked by side parts with good qualities but flexible.
  • a skate with wheels of this type has good speed performance when the skater progresses in a straight line, and good grip qualities when the skater progresses along a curve.
  • the invention overcomes these drawbacks.
  • the wheel according to the invention is characterized in that it comprises an adherent and flexible tread reinforced at least partially by a rigid frame.
  • the presence of a rigid reinforcement allows reduce the thickness of the tread while optimizing the effectiveness of this in all phases of skating, because that it reduces its deformations.
  • the frame is for example constituted by a layer of stiffening in contact with the internal face of the strip of rolling.
  • a layer is provided damping between the frame and the wheel hub.
  • the reinforcement forecast increases the amount of layer shock absorbing compared to usual wheels, without reinforcement, and therefore increase the damping characteristics while retaining good rigidity.
  • the frame has a width, in the direction axial, corresponding to a large fraction of the total width of the wheel.
  • the pressure of the wheel against the ground is transmitted at a large width (or over the entire width) of the layer damping and the effects of this layer are maximized.
  • the peripheral surface of the hub has a U-shaped profile, the branches of the U constituting flanges trapping the material depreciation.
  • the wheel shown in this figure has a hub 10 with an axle 12 having a central opening with housings 14 and 16 for ball bearings (not shown).
  • the peripheral part 18 of the hub 10 has, in its part central, a groove 20 intended to facilitate the attachment of a cushioning layer 22 molded around the outer surface hub 10.
  • the damping layer 22 is in contact, opposite to the outer surface of the hub 10, with a frame 24 and this armature 24 is covered by a tread 26, having adhesion and wear resistance properties, and that is therefore relatively flexible.
  • This tread 26 with the peripheral part 18 of the hub 10, traps the assembly formed by the damping layer 22 and the armature 24. Thus, this tread 26 is in contact with the external surface 28 of the frame 24 and with the lateral parts 30 and 32 of the damping layer 22.
  • the tread present in its part central 34 - in the direction of the axis - more thickness important than in its lateral parts 36 and 38.
  • the parts side 36 and 38 have a substantially uniform thickness while that the central part 34 has a thickness which increases gradually from the edges towards the center.
  • the frame 24 has at the center 40 a greater thickness. important than on edges 42 and 44. More precisely the face inner 46 (i.e. the face in contact with the layer 22) of the armature 24 has a small radius of curvature while the outer face 28 has a greater curvature.
  • the armature 24 1 has on the contrary a substantially constant thickness and completely surrounds the damping layer 22 1 .
  • FIG. 1 gives great flexibility of the wheel in radial direction and therefore promotes greater amortization, while the realization of the figure gives it a greater lateral rigidity and therefore promotes better guidance.
  • the frame 24 makes it possible to optimize the tread performance because it reduces deformations of the latter, and its presence therefore makes it possible to improve notably the performances, in particular of speeds, both in line right than in curves.
  • the specific mass of the component material the reinforcement 24 is less than the specific mass of the material component the tread 26 and the specific mass of the material of the cushioning layer 22. In this way, the wheel is reduced, in particular because the thickness of the strip 26 - the heavier - is minimized. In addition, more cushioning material.
  • the wheel according to the invention will be both more rigid laterally and more shock absorbing than traditional wheel.
  • the embodiment of the invention shown in Figure 2 differs from that shown in Figure 1 mainly by the fact that the hub 10 has in section, at its periphery, a U shape with lateral branches 50 and 52 trapping the damping layer 22 over part of its height towards radial. Furthermore, as in the case of FIG. 1, the strip of bearing 26, with the U-shaped outer surface of the hub, traps the damping layer 22 and the reinforcement 24.
  • branches 50 and 52 of the U further improves damping because these branches limit deformation even more layer 22 in the axial direction.
  • the flexions lateral are limited which improves the maneuverability, especially during changes of direction.
  • the tread 26 has, in the examples described, a thickness between 2 and 5 mm, and a hardness between 50 and 85 shore A.
  • current wheels with rubber have a very thick one-piece tread superior.
  • the radial deformability of the wheel is between 2 and 4 mm approximately, under a compression load of 75 daN.
  • the materials that can be used to make the strip bearings are, for example, a thermosetting polyurethane loaded or not, or rubber. This layer can be produced by injection, gravity casting or vulcanization.
  • the frame 24 is made of any material more rigid than the tread.
  • the frame is preferably made up of metal or composite material. It can be a braid or a ring pierced or not made of one of these materials.
  • the band of bearing is chosen from the polyurethanes of PUR or TPU type, amide block polyethers (PEBA), polyether ester block (PEBE) or rubbers.
  • the materials that can be used are, in particular, a thermosetting polyurethane, a block polyether amide, a polyether block ester or a polybutylene terephthalate to polyether base.
  • the molding is carried out by injection or by casting.
  • the hub can be made of various materials, including aluminum, polyamide, polyurethane, polybutylene terephthalate, a polycarbonate or an alloy of magnesium or titanium.
  • This hub can be produced by molding, injection, casting gravity, extrusion or by stamping, forging or stamping.
  • this hub can be made in one single part but also in two or more parts assembled by welding, machining, crimping or gluing.
  • the hardness of the cushioning layer is between 50 and 85 shore A, and that of the tread between 50 and 85 shore A.

Landscapes

  • Tires In General (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
EP98114264A 1997-08-28 1998-07-30 Rad für Rollschuhe mit äusseren Streifen Withdrawn EP0898992A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9710984 1997-08-28
FR9710984A FR2767710B1 (fr) 1997-08-28 1997-08-28 Roue pour patin a roulettes munie d'une bande de roulement

Publications (1)

Publication Number Publication Date
EP0898992A1 true EP0898992A1 (de) 1999-03-03

Family

ID=9510740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98114264A Withdrawn EP0898992A1 (de) 1997-08-28 1998-07-30 Rad für Rollschuhe mit äusseren Streifen

Country Status (3)

Country Link
EP (1) EP0898992A1 (de)
FR (1) FR2767710B1 (de)
TW (1) TW383230B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2369604A (en) * 2000-12-01 2002-06-05 Far Great Plastics Ind Co Ltd Wheel for skates or skateboards
WO2002094121A1 (en) * 2001-05-24 2002-11-28 Benetton Group S.P.A. A method for manufacturing a wheel and a wheel obtained thereby
WO2004060506A1 (de) * 2003-01-02 2004-07-22 Mario Herzog Rad

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2814373A1 (fr) 2000-09-25 2002-03-29 David Artasona Dispositif amortisseur a balancier pour patins ou planches a roulettes
KR101516799B1 (ko) * 2013-08-09 2015-05-04 서진영 이종 재질이 삽입된 휠

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB229745A (en) * 1923-11-23 1925-02-23 Walter Miller Metcalf Improvements in wheels for roller skates, toy wagons, furniture castors and other purposes
DE628872C (de) * 1936-04-17 Friedrich Herkenrath Ben Hur R Rollschurolle mit einer aus uebereinanderliegenden, verschieden harten Schichten bestehenden Gummibereifung
US2241685A (en) * 1938-07-07 1941-05-13 Chicago Roller Skate Co Wheel
WO1995012497A1 (en) * 1993-11-04 1995-05-11 Wear And Tear, Inc. Improved performance skate wheel
WO1997017116A1 (de) * 1995-11-03 1997-05-15 Mrk Handels-Ag Einspuriger rollschuh und laufrollen zur verwendung an einem solchen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE628872C (de) * 1936-04-17 Friedrich Herkenrath Ben Hur R Rollschurolle mit einer aus uebereinanderliegenden, verschieden harten Schichten bestehenden Gummibereifung
GB229745A (en) * 1923-11-23 1925-02-23 Walter Miller Metcalf Improvements in wheels for roller skates, toy wagons, furniture castors and other purposes
US2241685A (en) * 1938-07-07 1941-05-13 Chicago Roller Skate Co Wheel
WO1995012497A1 (en) * 1993-11-04 1995-05-11 Wear And Tear, Inc. Improved performance skate wheel
WO1997017116A1 (de) * 1995-11-03 1997-05-15 Mrk Handels-Ag Einspuriger rollschuh und laufrollen zur verwendung an einem solchen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2369604A (en) * 2000-12-01 2002-06-05 Far Great Plastics Ind Co Ltd Wheel for skates or skateboards
WO2002094121A1 (en) * 2001-05-24 2002-11-28 Benetton Group S.P.A. A method for manufacturing a wheel and a wheel obtained thereby
WO2004060506A1 (de) * 2003-01-02 2004-07-22 Mario Herzog Rad

Also Published As

Publication number Publication date
FR2767710A1 (fr) 1999-03-05
TW383230B (en) 2000-03-01
FR2767710B1 (fr) 1999-10-22

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