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WO1992020410A1 - Raquette de tennis, de squash ou autre - Google Patents

Raquette de tennis, de squash ou autre Download PDF

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Publication number
WO1992020410A1
WO1992020410A1 PCT/DE1992/000398 DE9200398W WO9220410A1 WO 1992020410 A1 WO1992020410 A1 WO 1992020410A1 DE 9200398 W DE9200398 W DE 9200398W WO 9220410 A1 WO9220410 A1 WO 9220410A1
Authority
WO
WIPO (PCT)
Prior art keywords
string
strings
primary
sections
racket
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.)
Ceased
Application number
PCT/DE1992/000398
Other languages
German (de)
English (en)
Inventor
Herwig Fischer
Original Assignee
Protagon Sportprodukte Dr Mauv
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 Protagon Sportprodukte Dr Mauv filed Critical Protagon Sportprodukte Dr Mauv
Priority to EP92909971A priority Critical patent/EP0589906B1/fr
Priority to DE59201678T priority patent/DE59201678D1/de
Publication of WO1992020410A1 publication Critical patent/WO1992020410A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B51/00—Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings
    • A63B51/12—Devices arranged in or on the racket for adjusting the tension of the strings

Definitions

  • the invention relates to a tennis, squash, racquetball or other racket with an essentially elliptical frame, a handle connected to it and a stringing arranged within the frame head and consisting of crossing strings which have several deflected on the frame with low friction and several times comprise strings stretched over the frame with essentially parallel string sections, the stringing being connected to a tensioning device which exerts an adjustable tensile force on the strings.
  • the tensioning device integrated in a ball racket is intended to make it possible to change the string tension and to adapt it to individual needs.
  • rackets are known, for example, from US-A-2 089 118, US-A-2 206 548, US-A-2 165 701 and EP 0 108 150 A.
  • the strings, or part of the strings, should be extended beyond the striking surface and guided into the handle or at another suitable point in such a way that the tensioning device arranged there exerts a tensile force on the strings and an adjustment of the string tension enables.
  • the rackets according to the aforementioned publications show different stringing patterns.
  • the fundamental problem tensionable racket is that the string is the string force at initiation of the tensile in the two ends of the stress due to friction and the elasticity is not sufficiently equal ⁇ moderately on the entire face distributed.
  • the attempt to create by friction-reducing components, such as rollers or sliding elements ⁇ this situation fails, the fact that a large part of the friction losses comes from the cross-linking points when the strings are woven in the face and is practically unavoidable there, since according to the rules of the tennis spring weaving of the strings is mandatory.
  • the stringing pattern is selected such that at least part of the stringing means that the immediately adjacent string sections belong to different strings and that the distance between the parallel string sections belonging to the same string is at least about a ball radius is.
  • the ball strikes the strings primarily when striking the strings, which naturally have a higher tension, and that secondary strings which are generally softer are predominantly struck when the striking the edge.
  • each string of strings is guided outside the target area along the frame over a relatively large distance, which does bring about a great elasticity of the entire string bed, but the resulting softer feel is not perceived as pleasant by all players.
  • a string guide is selected which leads only a part of the strings along the frame into the handle to a tensioning mechanism, but the connected strings are not jumped by at least one ball radius and, on the contrary, the string guide is designed in such a way that the impacting ball touches as many primary and secondary strings as possible at all points on the face.
  • At least some of the primary and secondary string sections are arranged next to one another in an alternating sequence.
  • at least some of the primary string sections can also be arranged in such a way that two primary string sections lie alternately with two secondary string sections.
  • the racket preferably has a diagonal or orthogonal string pattern.
  • the string guide of the right side of the frame head is displaced to the left-hand side in such a way that crosslinking points result on the racket's longitudinal axis, which are formed from a primary and a secondary string section.
  • strings consisting of a primary and a secondary string section and the respective sections, which are extended beyond the striking surface and connect the primary and secondary sections to one another or to the tensioning device, are essentially They are of equal length, so that the tension is changed approximately in the same manner and by approximately the same amount when the tensioning device is actuated.
  • the different strings representing the strings are each of the same length.
  • the stretches of the string sections which are guided along the frame are in each case as short as possible, ie the string is guided from a first hole into the hole next to it. This keeps the elasticity of the string guide on the frame small.
  • this string guide has the effect that when the ball hits the strings lying side by side, which are connected to one another, so that a tension exchange with additional elasticity (via other strings) does not take place.
  • the distance between two strings lying next to one another in parallel is preferably about 1/4 of the ball diameter.
  • the angle of the string guide in the racket head in relation to the head shape is preferably selected such that in the racket head area of the frame with essentially all set tensions, the force curves at essentially all deflection points in the frame have no resultants which change the head geometry of the racket, that is to say the head shape is elongated, wider or otherwise deformed. In other words, bending stresses, which can cause the frame head to be deformed, are avoided.
  • the tensioning device is arranged in the handle so as to be longitudinally displaceable.
  • a string guide is selected in which the string sections extending beyond the frame surface are guided along the outer surface of the frame, where they engage on the tensioning device mentioned are steady.
  • the number of string sections which are guided in the handle and connected to the tensioning device is preferably greater than 10, preferably at least 14 and less than 36, preferably at most 28.
  • an optimum density of the stringing Saiten ⁇ achieved, which ensures that in each case a ball up aptly seen in a Besaitungsraum, meets several primary strings to allow a controlled ball guide.
  • the number of string sections which is to be handled as a string tree is limited to a maximum.
  • the string density in the striking surface can also be increased independently of the number of (primary and secondary) strings that are held in the handle by additionally tensioning string sections in the striking surface that are not connected to the tensioning device are.
  • tensioning string sections in the striking surface that are not connected to the tensioning device are.
  • the fixed strings will preferably be arranged in the outer edge zone, so that a ball hitting the racket hits the centrally arranged tensionable primary and secondary string sections in the majority of the strikes.
  • the number of fixed strings can be increased to such an extent that only primary string sections are required.
  • the arrangement of the fixed and the tensionable strings is also chosen such that the tensionable strings preferably run through the center of the face and the fixed strings lie in the edge zone.
  • a further limitation of the elasticity of the strings can be achieved according to a further development of the invention in that a viscoelastic material is arranged between the string sections guided on or over the frame and / or in the handle.
  • a polymer plastic, preferably polyurethane, is particularly suitable for this purpose.
  • a viscoelastic material refers to substances whose elasticity behavior is different in the case of brief abrupt movement sequences than in the case of longer influences.
  • the viscoelasticity of the intermediate layers which can also be designed as sleeves for Besaitungsabête, to the fact that a auftre ⁇ at a blow tender tennis ball is no relative movement of the or of concern ⁇ the string segments with the intermediate layer has the result ande hand, slippage Stringing during tensioning is readily possible, so that overall the impact behavior of the racket according to the invention is even "harder, more direct”. Exemplary embodiments of the invention are shown in the drawings. Show it
  • 1 and 2 are schematic plan views of a
  • the tennis racket shown in the figures has a handle 10 and a frame 11.
  • the handle is hollow and has a tensioning device, not shown.
  • the basic structure of a tennis racket with a tensioning device is known from the prior art, so that reference is made, for example, to EP 0 106 850 A.
  • Both tennis rackets shown in FIGS. 1 and 2 have a diagonal stringing pattern which is formed by 2 ⁇ 4 strings.
  • the ends of the strings 12 to 19 are each firmly connected to the tensioning device.
  • the connection points of the string 12 are denoted by a and b.
  • the string 12 guided by the clamping end a on the tensioning device in the handle 10 along the frame is passed through a bore in the frame 11 and forms a primary string section 121, since it is connected directly to the tensioning device.
  • the string section 121 ends at an opposite bore in the frame 11, where the string 12 is guided along the frame as a short string section piece 122 in order to run into the adjacent bore and form the secondary string section 123.
  • the string 12 As the string 12 progresses, the string is again guided through a bore in the frame 11, guided there along the frame with the formation of a short string section 124, again protruding through a bore, whereupon the string 12 is a further secondary string section 125 continues to the opposite end. Forming a further short string section 126, the string section 127 finally runs back to the exciting b on the tensioning device.
  • the strings 127 and 121 thus form primary string sections, the string sections 123 and 125 secondary.
  • the string sections 122, 124 and 126 are chosen as short as possible in order to obtain a minimum of elasticity from the relevant sections.
  • the string 13 is guided starting from the clamping point c to the other clamping point d;
  • the strings 14 to 19 In the course of the string 19, the primary string sections are designated 191 and 194, whereas the string sections 192 and 193 represent secondary string sections. If a ball now strikes in the area in which the strings 19 and 12 intersect several times over their string sections, the ball touches two primary string sections 191 and 194 as well as 121 and 127, which are essentially the restoring force and thus determine the ball trajectory. The same applies accordingly when the ball strikes at other locations, where it touches two pairs of primary strings arranged in a crossed manner. The beating behavior is essentially constant over the entire stringing, i.e. regardless of where the ball hits.
  • the guidance of the strings 12 to 19 is selected so that there is an asymmetrical stringing pattern with respect to the racket longitudinal axis 20 on the right and left.
  • this axis 20 there are respective crossing points of primary and secondary strings, but no crossing points of primary strings.
  • String sections running parallel to each other alternately represent secondary and primary string sections.
  • a PUR intermediate layer is arranged in each case, which, when tensioned, causes the string sections to slide against one another and against the intermediate layer and relative to the intermediate layer Frame or handle allowed, but blocks the relative movement in question in the event of brief force, such as a blow.
  • fixed strings 30 tensioned according to conventional methods can also be provided in the edge zone between two frame points 31 and 32.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)

Abstract

La présente invention concerne un système pour corder des raquettes à cordes, par exemple des raquettes de tennis dont la tension des cordes est réglable, avec lequel une partie des cordes est reliée, en tant que sections de cordage primaires, au mécanisme de tension, tandis que l'autre partie n'est reliée qu'indirectement, en tant que sections de cordage secondaires, au mécanisme de tension par l'intermédiaire des sections de cordage primaires. Du fait de la disposition des sections de cordage primaires et secondaires, la balle rencontre toujours le même nombre de sections de cordage primaires ou secondaires dans toutes les zones du tamis.
PCT/DE1992/000398 1991-05-21 1992-05-12 Raquette de tennis, de squash ou autre Ceased WO1992020410A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP92909971A EP0589906B1 (fr) 1991-05-21 1992-05-12 Raquette de tennis, de squash ou autre
DE59201678T DE59201678D1 (de) 1991-05-21 1992-05-12 Tennis-, squash-, racquetball- oder anderer schläger.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEP4116472.5 1991-05-21
DE4116472 1991-05-21
DEP4134566.5 1991-10-19
DE4134566A DE4134566A1 (de) 1991-05-21 1991-10-19 Tennis-, squash-, racquetball- oder anderer schlaeger

Publications (1)

Publication Number Publication Date
WO1992020410A1 true WO1992020410A1 (fr) 1992-11-26

Family

ID=25903768

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/000398 Ceased WO1992020410A1 (fr) 1991-05-21 1992-05-12 Raquette de tennis, de squash ou autre

Country Status (3)

Country Link
EP (1) EP0589906B1 (fr)
DE (2) DE4134566A1 (fr)
WO (1) WO1992020410A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1473063B1 (fr) * 2003-04-30 2008-02-06 Wilson Sporting Goods Company Raquette avec des cordes principales périphériques allongées et un centre de percussion élargi

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2165701A (en) * 1938-11-26 1939-07-11 Goerke Henry Racket
DE3211738A1 (de) * 1982-03-30 1983-10-06 Herwig Fischer Tennisschlaeger

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59500628A (ja) * 1982-03-30 1984-04-12 フレキシボツクス　リミテツド メカニカル・シ−ルの改良

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2165701A (en) * 1938-11-26 1939-07-11 Goerke Henry Racket
DE3211738A1 (de) * 1982-03-30 1983-10-06 Herwig Fischer Tennisschlaeger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1473063B1 (fr) * 2003-04-30 2008-02-06 Wilson Sporting Goods Company Raquette avec des cordes principales périphériques allongées et un centre de percussion élargi

Also Published As

Publication number Publication date
DE59201678D1 (de) 1995-04-20
EP0589906A1 (fr) 1994-04-06
DE4134566A1 (de) 1992-11-26
EP0589906B1 (fr) 1995-03-15

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