Screw for fastening

B - Operations – Transporting – 24 – B

Patent

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Details

B24B 45/00 (2006.01) B24B 23/02 (2006.01) B27B 5/32 (2006.01) F16B 33/00 (2006.01) F16D 1/06 (2006.01) F16D 7/04 (2006.01) F16D 41/12 (2006.01)

Patent

CA 2159107

The present invention aims to provide a screw (10) for fastening which is capable of being both fastened and loosened strongly simply with a direct manual rotating operation. The device (10) is provided with a screw member (11) with a female screw or a male screw formed in its core area; a flange ring (12) which is fitted around the outer circumferential area of one edge of said screw member the frontal surface of which makes contact with the object to be attached; an operating ring (13) which faces the flange ring (12), separated from it by a prescribed separation, and which inputs the operational rotational force; a reverse screw ring (14) which is positioned between the flange ring (12) and the operating ring (13), and is screwed onto the outer circumferential area of the screw member (11), regulating the screw feed amount; a screw feed ring (15) which is off-centred by screwing part of the female screw area provided on the relevant inner circumferential portion onto a male screw area provided on the outer circumference of the reverse screw ring (14), and which transmits the screw feed to the above-mentioned flange ring (12); and a holding ring (16) which permits revolution of the said screw feed ring (15) by holding the said screw feed ring (15) off-center.

La présente invention concerne une vis (10) de serrage qui peut être fortement serrée et desserrée manuellement, par un mouvement direct de rotation. Le dispositif (10) comprend un corps (11) qui forme une vis femelle ou mâle dans sa partie centrale; un anneau à bride (12) qui s'adapte autour de la circonférence extérieure de l'un des bords de ce corps et dont la surface frontale est en contact avec l'objet qui doit être fixé; un anneau de manoeuvre (13) qui fait face à l'anneau à bride (12) duquel il est séparé par un espace déterminé, et qui imprime la force motrice de rotation; un anneau à filetage inversé (14), situé entre l'anneau à bride (12) et l'anneau de manoeuvre (13), qui est vissé sur la circonférence extérieure du corps (11) et règle l'avance de la vis; un anneau d'avance de la vis (15) qui est décentré par la partie filetée de la vis femelle se trouvant sur la partie concernée de la circonférence intérieure vers une vis mâle se trouvant sur la circonférence extérieure de l'anneau à filetage inversé (14), et qui transmet l'avance de la vis à l'anneau à bride (12) mentionné plus haut; et un anneau de maintien (16) qui permet à l'anneau d'avance de la vis (15) de tourner en le maintenant dans une position décentrée.

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