WO1995012436A1 - Raquette et son procede de fabrication - Google Patents

Raquette et son procede de fabrication Download PDF

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Publication number
WO1995012436A1
WO1995012436A1 PCT/AT1994/000163 AT9400163W WO9512436A1 WO 1995012436 A1 WO1995012436 A1 WO 1995012436A1 AT 9400163 W AT9400163 W AT 9400163W WO 9512436 A1 WO9512436 A1 WO 9512436A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer shell
shell
frame
parts
circumferential direction
Prior art date
Application number
PCT/AT1994/000163
Other languages
German (de)
English (en)
Inventor
Helmut Umlauft
Original Assignee
Head Sport Aktiengesellschaft
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 Head Sport Aktiengesellschaft filed Critical Head Sport Aktiengesellschaft
Priority to EP94931444A priority Critical patent/EP0676977A1/fr
Publication of WO1995012436A1 publication Critical patent/WO1995012436A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/10—Frames made of non-metallic materials, other than wood
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like

Definitions

  • the invention relates to ballochers with a tensioning frame for stringing, a handle part and an outer shell at least partially encompassing the tensioning frame made of tough, elastic plastic with a smooth outer surface, the edge edges of the outer shell running parallel to the stringing plane and the outer shell in the circumferential direction ge slotted or consists of several shell parts, the 0 facing edges delimit slots extending in the circumferential direction, and a method for producing such a ball racket.
  • the layers of lacquer which are applied to the outside of such a racket, in particular to the outside of the tenter frame Q , are relatively thin and can only withstand mechanical stresses for a limited time.
  • Tennis racket frames are exposed to a number of stresses, and the bending and torsional stresses that occur can lead to fractures even with fiber-reinforced plastics.
  • Applied to the c outside the scope of such paint layers do not contribute to the stabilization of the frame, and account when broken there is a considerable risk of injury from protruding frame parts or parts of the reinforcement.
  • FR-A 2 326 211 shows a plastic part pressed onto the clamping frame in a form-fitting manner, it being a one-piece protective strip, the free ends of which lie at a distance from one another.
  • DE-AS 2 328 371 shows a metal-plastic rack in which the inner and outer straps of the tensioning frame have been coated with protective layers of plastic. These protective layers cover the surfaces of the two belts and should have a certain modulus of elasticity. From US Pat. No. 4,042,238 a plastic covering of a ball racket has also become known, ABS being used for the covering.
  • Frame constructions in which shell parts are used, have to be correspondingly reinforced in the material of the shell parts, which form load-bearing construction elements of the frame, and in this way cannot produce an outer surface that is screen-printable or inscribable. All such frame constructions therefore require elaborate finishes to produce a smooth surface, as well as further operations for applying the decor.
  • a tennis racket with an outer shell made of tough, elastic plastic with a smooth surface has become known from EP 0 262 117 B1. This construction substantially reduces the reworking effort for the application of fonts and decorations and offers improved protection against mechanical stress on the racket.
  • the aim of the present invention is to provide a racket frame with good vibration behavior, in which no post-processing is necessary after the pressing and a permanent and wear-resistant decor application can take place simultaneously with the pressing in one operation.
  • the configuration of the ball racket according to the invention essentially consists in that the outer shell contains at least one film provided with decoration by means of thermal diffusion pressure or back pressure and is connected to the tenter frame, in particular is glued or welded.
  • the slots in the outer shell running in the circumferential direction of the tenter frame can be closed in a mold by welding, gluing or pressing.
  • a film can advantageously be selected as the material which contains at least one layer of a tough, elastic plastic and has a smooth outer surface, as well as possibly armored. Because the decor is applied to the film by means of thermal diffusion printing or back pressure, it is particularly resistant to physical-chemical attack, in particular ultra violet radiation. Layers made of a polyamide, linear polyester or thermoplastic polyurethane are advantageously used for applying the decoration by means of thermal diffusion printing or back pressure.
  • the outer shell can have a relatively low material thickness and advantageously have a thickness of 0.1 to 0.5 mm, since it is not itself used directly as a supporting element but only as a surface-improving element and as a decorative support.
  • the method according to the invention for producing such a racket frame is essentially characterized in that a plastic film is provided with a decoration by means of thermal diffusion printing or back pressure and the printed film is deformed into shell parts or a slotted outer shell, and that Outer shell or the shell parts with a clamping frame made of fiber-reinforced plastic or metal, optionally connected with the interposition of an adhesive layer, in particular glued or welded using heat and with pressing.
  • An advantageously not fully hardened, fiber-reinforced plastic material can be used as the core for the stenter frame, which hardens completely when pressed on and connected to the outer shell. The processing time is significantly reduced in this way, and a smooth frame surface provided with the decor is produced in only one process step.
  • the procedure is advantageously such that the shell parts are welded to one another along at least the edges lying in the circumferential direction of the clamping frame, or are pressed in a mold, the edge of the shell parts always being understood to mean the edge of the shell parts.
  • the shell parts can be preformed from the film provided with the decor using pressure and heat by deep drawing.
  • the edges of the opposite shell parts advantageously lie in the covering plane.
  • This design has the advantage that the seam on the outside of the tensioning frame between the shell parts can remain open and can be covered and protected by the eyelet tape on the outside of the tensioning frame.
  • the edges of the shell parts preferably lie on the underside and top side of the stenter.
  • the shell parts are positioned on the stenter, possibly with the interposition of an adhesive layer, and glued or welded to the stenter using heat while pressing, with protruding parts remaining after the pressing or welding, which are then separated off.
  • FIG. 1 shows embodiments according to the invention for a cross section of a racket frame
  • FIGS. 4 and 5 each show a preformed shell element, as is the case for the embodiment according to FIG. 1 and FIG .3 can be used
  • FIG. 6 shows a plan view of a tenter frame before completion.
  • FIG.l and 2 the clamping frame of a racket is designated 1.
  • This racket frame forms a wall, the shape of which is predetermined by the tool used to manufacture the racket frame.
  • Two prefabricated shell parts 2 and 3 provided with a decor applied to the inside, are placed on the outer wall of the frame 1.
  • the slots 4 are closed by welding, gluing or pressing in a mold.
  • this process uses heat to glue or weld to the tensioning frame 1, and a racket frame with a smooth outer surface and complete decoration is immediately obtained.
  • FIG. 3 shows an embodiment variant in which the shell element 2 shown in FIG.
  • the slot 4 preformed by pressure and heat and provided with a decor by means of thermal diffusion pressure or back pressure, is fixed on the clamping frame 1 by being clamped on, as a result of which complex positioning is avoided can.
  • the slot 4 can be closed in a mold by welding, gluing or pressing. In the embodiment according to FIG. 3, the slot 4 is not glued or closed, but is instead covered by an eyelet tape 5.
  • the components used as the outer shell can be produced by back-printing a film and by subsequent deep-drawing or hot forming, a shell part 2 suitable for the formation according to FIG. 1 being shown in section in FIG.
  • FIG. 6 shows a tensioning frame, on which shell parts provided with a decoration are applied, which have recesses 6 for a centerpiece 7. The completion is again carried out by pressing using heat.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne une raquette comprenant un cadre (1) sur lequel est tendu le cordage, un manche, et une coquille extérieure (2, 3) qui entoure au moins partiellement ledit cadre (1) et est constituée d'une matière plastique élastique résistante, présentant une surface extérieure lisse. Les bords extérieurs de ladite coquille extérieure (2, 3) sont parallèles au cordage ou se trouvent dans le plan de celui-ci, et la coquille extérieure (2, 3) est pourvue de rainures circonférentielles ou se compose de plusieurs sections de coquille dont les bords qui se font face délimitent des rainures circonférentielles. Ladite raquette se caractérise en ce que la coquille extérieure (2, 3) est collée ou soudée avec le cadre (1) de tension du cordage et comporte un film pourvu d'un motif décoratif appliqué par thermo-impression ou par impression en transparence.
PCT/AT1994/000163 1993-11-02 1994-11-02 Raquette et son procede de fabrication WO1995012436A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94931444A EP0676977A1 (fr) 1993-11-02 1994-11-02 Raquette et son procede de fabrication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0220793A AT402793B (de) 1993-11-02 1993-11-02 Ballschläger, sowie verfahren zu seiner herstellung
ATA2207/93 1993-11-02

Publications (1)

Publication Number Publication Date
WO1995012436A1 true WO1995012436A1 (fr) 1995-05-11

Family

ID=3530005

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1994/000163 WO1995012436A1 (fr) 1993-11-02 1994-11-02 Raquette et son procede de fabrication

Country Status (3)

Country Link
EP (1) EP0676977A1 (fr)
AT (1) AT402793B (fr)
WO (1) WO1995012436A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19745649C2 (de) * 1996-10-17 2000-06-08 Fischer Gmbh Dekor für die Oberflächengestaltung von Sportgeräten, Verfahren zur Herstellung sowie Sportgerät

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2328371A1 (de) * 1972-06-08 1974-01-03 Fischer Gmbh Ballschlaeger und verfahren zu seiner herstellung
EP0033776A2 (fr) * 1980-02-07 1981-08-19 CP Components GmbH Kunststoff-Bauteile Procédé et dispositif de mise en couleur ou d'impression d'objets en forme de bande, en particulier de garnitures de ski, et objets d'une telle nature
DE3636645A1 (de) * 1985-10-29 1987-04-30 Kneissl International Gmbh Sportgeraet, insbesondere ski oder dergleichen
EP0262117A1 (fr) * 1986-09-23 1988-03-30 Head Sportgeräte Gesellschaft m.b.H. & Co.OHG. Raquette pour jeu de balle et son procédé de fabrication
FR2620974A1 (fr) * 1987-09-25 1989-03-31 Salomon Sa Procede de decoration d'articles par une methode d'impression par sublimation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH599790A5 (en) * 1975-11-27 1978-05-31 Mueller Montana Research & Co Fibre reinforced plastics tennis racket
DE3048588C2 (de) * 1980-12-23 1982-08-05 Rehau Plastiks Ag & Co, 8673 Rehau Verfahren zur Herstellung von Dekorprofilen
FR2528318A1 (fr) * 1982-06-14 1983-12-16 Cousin Freres Sa Cadre de raquette de tennis et son procede de fabrication

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2328371A1 (de) * 1972-06-08 1974-01-03 Fischer Gmbh Ballschlaeger und verfahren zu seiner herstellung
EP0033776A2 (fr) * 1980-02-07 1981-08-19 CP Components GmbH Kunststoff-Bauteile Procédé et dispositif de mise en couleur ou d'impression d'objets en forme de bande, en particulier de garnitures de ski, et objets d'une telle nature
DE3636645A1 (de) * 1985-10-29 1987-04-30 Kneissl International Gmbh Sportgeraet, insbesondere ski oder dergleichen
EP0262117A1 (fr) * 1986-09-23 1988-03-30 Head Sportgeräte Gesellschaft m.b.H. & Co.OHG. Raquette pour jeu de balle et son procédé de fabrication
FR2620974A1 (fr) * 1987-09-25 1989-03-31 Salomon Sa Procede de decoration d'articles par une methode d'impression par sublimation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19745649C2 (de) * 1996-10-17 2000-06-08 Fischer Gmbh Dekor für die Oberflächengestaltung von Sportgeräten, Verfahren zur Herstellung sowie Sportgerät

Also Published As

Publication number Publication date
AT402793B (de) 1997-08-25
EP0676977A1 (fr) 1995-10-18
ATA220793A (de) 1997-01-15

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