FR2659931A1

FR2659931A1 - Device allowing the fastening and adjustment of a sailboard fin

Info

Publication number: FR2659931A1
Application number: FR8916157A
Authority: FR
Inventors: Bachelier Bernard
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-12-01
Filing date: 1989-12-01
Publication date: 1991-09-27

Abstract

The invention relates to a device making it possible to adjust the depth of a fin and to keep it securely fixed in the desired position. It is composed of a fixed casing (1) passing right through the board and into which is inserted a movable part (2) which slides over a portion of the profile of the fin (3). When the user introduces the fin (3) and the movable component (2) which traps it into the fixed casing (1) the interfitting of these two components creates clamping on the fin. The cap (4) is then fixed over the fixed casing (1), then the set screws (6) are tightened which press on the movable component (2) and provide locking thereof; on the other hand, for subsequent adjustment, it is sufficient to loosen the set screws (6), to adjust the depth of the fin (3), then to retighten the set screws (6).

Description

DESCRIPTION
La présente invention concerne un dispositif de fixation et de réglage d'aileron sur une planche à voile.DESCRIPTION
The present invention relates to a device for fixing and adjusting a fin on a windsurfing board.

La fixation des ailerons est habituellement effectué par un boitier rainuré 'd'une profondeur de 25 a 30 m inséré 3 l'arrière de la carène des flotteurs. Les possibilités de réglage de l'aileron sont limitées a une translation AV/AR. The attachment of the fins is usually carried out by a grooved box with a depth of 25 to 30 m inserted at the rear of the hull of the floats. The possibilities of adjustment of the aileron are limited to a translation AV / AR.

Les progrès accomplis en matière de compréhension des facteurs de performance et notamment le positionnement de l'aileron ont rendu pratiquement inutile cette possibilité de réglage.The progress made in terms of understanding the performance factors and in particular the positioning of the fin have made this possibility of adjustment practically useless.

En revanche, la nécessité de pouvoir faire varier rapidement la profondeur de l'aileron est devenue primordiale. On the other hand, the need to be able to quickly vary the depth of the fin has become paramount.

D'autre part, la résistance mécanique, si elle était convenable il y a quelques années, est devenue insuffisante avec l'évolution des performances et l'augmentation es efforts exercés sur l'aileron. On the other hand, the mechanical strength, if it was suitable a few years ago, has become insufficient with the evolution of performance and the increase in efforts exerted on the fin.

Le dispositif selon l'invention permet de remédier aux principaux défauts des systèmes existants:
1 - La solidité, en effet le dispositif est constitué
d'un boitier fixe traversant la planche de part en
part, ce qui réduit considérablement les effets de
couple que l'aileron exerce sur la base de sa
fixation.The device according to the invention makes it possible to remedy the main faults of existing systems:
1 - The solidity, in fact the device is made up
of a fixed box crossing the board right through
share, which greatly reduces the effects of
torque exerted by the fin on the basis of its
fixation.

2 - La possibilité de réglage en profondeur. Le
dispositif selon l'invention comporte une pièce
mobile (2) qui vient s'ajuster d'une part sur la
partie haute de l'aileron (3) ont le profil est
constant sur une longueur qui détermine l'amplitude
d réglage possible, et d'autre part, contre les
parois internes du boitier fie (I). Le serrage sur
la partie fie (1) se fait par emboitement. Celui
ci a pour effet de produire une étreinte sur
l'aileron (3) et d'en assurer le maintien en
position. Le serrage de la partie mobile (2) et
l'étreinte sur l'aileron (3) peuvent-être accrus
en augmentant la pression au sommet de la partie
mobile (2).2 - The possibility of depth adjustment. The
device according to the invention comprises a part
mobile (2) which adjusts on the one hand on the
upper part of the fin (3) have an east profile
constant over a length which determines the amplitude
d possible adjustment, and on the other hand, against
internal walls of the housing (I). Tightening on
the fie part (1) is done by interlocking. The one
this has the effect of producing an embrace on
the aileron (3) and ensuring its maintenance in
position. The tightening of the mobile part (2) and
the grip on the fin (3) can be increased
increasing the pressure at the top of the game
mobile (2).

Selon une forme de réalisation préférencielle, une pièce solidaire de la partie fie (1) et appelé capot (4), taraudé en trois points permet a des vis d'exercer une pression sur la partie mobile (2). According to a preferred embodiment, a piece integral with the solid part (1) and called the cover (4), tapped at three points allows screws to exert pressure on the movable part (2).

Selon une variante, ce système peut-etre remplacé par un excentrique qui va lui aussi exercer une pression sur la partie mobile (2). According to a variant, this system can be replaced by an eccentric which will also exert pressure on the mobile part (2).

La pièce mobile étant facilement inter-changeable, on peut, grâce à d'autres pièces mobiles, å l'intérieur desquelles le positionnement de l'aileron est différent, changer l'emplacement ou l'incidence de l'aileron. The movable part being easily interchangeable, it is possible, thanks to other movable parts, inside which the positioning of the aileron is different, to change the location or the incidence of the aileron.

Le dispositif selon l'invention est donc particulièrement adapté aux performances des nouvelles générations de planches de slaloom, courses racing et open. The device according to the invention is therefore particularly suitable for the performance of new generations of slaloom boards, racing and open races.

Claims

1) Device allowing fi>: ation and adjustment of a board fin .t sail characterized in that it comprises a fie box (1) crossing the board right through, a movable part (2) split in its front part and adjusted to the profile of a fin (3), a fin and heel with a constant profile in its upper part and a system exerting pressure on the moving part (2) which can be either eccentric or a cover (4) with pressure screw (6).

If Device according to claim 1 characterized in that the movable part (2) fits into the fixed housing.

3b Device according to claims 1 or 2 characterized in that the movable part (2i is adjusted on the fin (3) and slides thereon.

4) Device according to any one of the preceding claims, characterized in that the movable part (2) is opened by a vertical slot in its front part.

5) Device according to any one of the preceding claims, characterized in that the profile of the fin is constant in its upper part which makes it possible to determine the amplitude of adjustment.

6) Device according to any one of the preceding claims, characterized in that the tightening of the assembly 'takes place by fitting the movable clamp (2) into the fixed housing (1).

7) Device according to any one of the preceding claims, characterized in that this tightening can be accentuated by a pressure on the moving part (2) by an eccentric or by a cover (4) comprising pressure screws (6) acting in front and back of the fin.

8) Device according to any one of the preceding claims, characterized in that different adjustments, in particular in translation and in incidence can be obtained by using a movable part (2) provided with fin imprints positioned differently.

if Device according to any one of the preceding claims, characterized in that the internal walls of the solid part (1) and the external walls of the movable part (2) have a slope percentage (8).