FR2567597A1

FR2567597A1 - Screw with anti-slip head and screwdriver therefor

Info

Publication number: FR2567597A1
Application number: FR8311580A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1983-07-08
Filing date: 1983-07-08
Publication date: 1986-01-17

Abstract

The subject of the invention is a screw with an anti-slip head and a screwdriver therefor enabling these screws to be screwed in or out without it being possible for the said screwdriver to come out of the cavity of the screw head where it rests, even with large rotary pressures. Referring to the drawings, 1 is a polyhedron fixed perpendicularly to the screwdriver shaft. When this polyhedron is inserted in the central cavity 3 of the screw head and the screwdriver turned in either direction, this polyhedron embeds itself in the horizontal cavities 4 and can only be withdrawn on execution of a reverse rotation. This screw may replace all screws, especially where these need to offer some resistance to being screwed or unscrewed, or where they need to be unscrewed and rescrewed very frequently.

Description

La présente invention a pour objet A titre de produit industriel nouveau, une vis à tête antidérapante et son tourne-vis, permettant de visser ou de dévisser ces vis sans que le tourne-vis ne sorte de la cavité de la tête de vis où il prend appui, même avec une forte pression de rotation. The present invention relates to As a new industrial product, a non-slip head screw and its screwdriver, allowing to screw or unscrew these screws without the screwdriver coming out of the cavity of the screw head where it is supported, even with strong rotational pressure.

Les vis catuellement employées, qu'elles soient à fentes simples ou cruxiformes, ne retiennent pas le tourne-vis dès que l'on exerce une certaine force de rotation, ce dernier sort de la fente et dérape, d'autant plus quand il s'agit de dévisser une vie prsentant une certaine résistance, pour essayer d'éviter ce dérapage l'on est améné à exercer une forte pression sur la vis avec le tourne-vis, il en résulte deux forces opposées puisque la vis en se dégageant de la matière où elle est fixée effectue un mouvement en sens inverse de la pression du tourne-vis, il s'en suit souvent une détèrioration de la tête de vis qui necessite parfois le changement de la vis pour le remontage. The screws used catually, whether with simple slits or cruxiform, do not hold the screwdriver as soon as a certain rotational force is exerted, the latter leaves the slit and skids, all the more when it s act of unscrewing a life presenting a certain resistance, to try to avoid this skid one is brought to exert a strong pressure on the screw with the screwdriver, it results from it two opposite forces since the screw while being released from the material where it is fixed performs a movement in the opposite direction to the pressure of the screwdriver, it often follows a deterioration of the screw head which sometimes requires the change of the screw for reassembly.

Cette vis à tête antidérapante et son tourne-vis vise la commodité et donc le gain de temps, la tête de vis est remarquable en ce qu'elle comporte en son pourtour, des cavités polyèdriques ayant sorties principales horizontalement vers une autre cavité centrale à ouverture verticale, le tourne vis comporte à la base une polyèdre perpendiculaire k sa tige et à son manche.Comme le démontrent les dessins annexés à la présente description lorsque l'on incruste le polyèdre I du tourne-vis, Fig. 1 et 2, dans la cavité centrale 3 de la tête de vis, Fig. 3,4 et 5. et que l'on effectue un mouvement de rotation dans un sens ou dans l'autre, ledit polyèdre s'in- troduit dans les cavités horizontales 4 et ne peut en ressortir qu'en effectuant une rotation inverse.On peut ainsi effec tuer de très forts mouvements de rotation sans risquer de dérapages du tourne-vis, de plus en dévissant on peut tirer sur le tourne-vis tout en tournant, aidant ainsi la vis à se déloger. This non-slip head screw and its screwdriver aims for convenience and therefore saving time, the screw head is remarkable in that it comprises around its periphery, polyhedral cavities having main outlets horizontally to another central opening cavity vertical, the screwdriver comprises at the base a polyhedron perpendicular to its rod and to its handle. As the drawings annexed to this description demonstrate when the polyhedron I of the screwdriver is encrusted, FIG. 1 and 2, in the central cavity 3 of the screw head, FIG. 3,4 and 5. and that a rotational movement is carried out in one direction or the other, said polyhedron is introduced into the horizontal cavities 4 and can only come out by performing a reverse rotation. We can thus perform very strong rotational movements without risking slippage of the screwdriver, more by unscrewing we can pull the screwdriver while turning, helping the screw to dislodge.

La vis à tête antidérapante et son tourne-vis objet de l'invention peut remplacer toutes les vis traditionnelles là où elles sont employées, c'est à dire:bois, plaques, tôles , pièces mécaniques, électriques etc..., pour leur assemblage ou leur fixation, mais à plus forte raison lorsque celles-ci ont à être démontées et remontées corme dans l'automobile, les appareils ou machines mécaniques, électriques etc... The non-slip head screw and its screwdriver object of the invention can replace all the traditional screws where they are used, that is to say: wood, plates, sheets, mechanical, electrical parts etc ..., for their assembly or their fixing, but all the more so when these have to be dismantled and reassembled in the automobile, mechanical, electrical apparatus or machines, etc.

Il est bien entendu que la présente invention n'est pas limitée aux modèles réprésentés par les dessins, des modèles de toutes tailles peuvent être réalisés, mais les rapporta de largeur et d'épaisseur entre le polyèdre du tourne-vis et les cavités de la tête de vis doivent être respectés afin de conserver une réelle efficacité. It is understood that the present invention is not limited to the models shown in the drawings, models of all sizes can be produced, but the width and thickness of the polyhedron of the screwdriver and the cavities of the screw head must be respected in order to maintain real efficiency.

Claims

CLAIMSSI - Screw with non-slip head and its screwdriver allowing to screw these screws or to unscrew them, even with a strong rotational pressure, without the aforementioned screwdriver being able to slip from the head of the screw which has in its circumference cavities with single outlet or main (4) which opens horizontally on a central cavity (3) which opens vertically upwards, characterized in that a polyhedron located perpendicular to the rod in of the screwdriver and at its base, is embedded in the horizontal cavities of the perimeter by rotation, after having been introduced into the central cavity.

20 - Screw and screwdriver according to claim I, characterized in that the polyhedron is a parallelepiped.

3 - Screw and screwdriver according to claim I, characterized in that the polyhedron is a decahedron.