Actuator that adjusts to side loads automatically by...

F - Mech Eng,Light,Heat,Weapons – 16 – H

Patent

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Details

F16H 25/24 (2006.01)

Patent

CA 2246420

The actuator includes a housing (12) and a gear nut (64) within the housing (12). A leadscrew (78) on which the gear nut (64) is threaded traverses the housing (12). As the leadscrew (78) moves axially, the gear nut (64) rotates. To prevent misalignment between the gear nut (64) and leadscrew (78), the gear nut's outer walls (74 and 76) and bearing surfaces (30 and 46) within the housing (12) permit the gear nut's axis of rotation to pivot in any direction along with any pivoting of the leadscrew (78), while allowing the gear nut (64) to rotate about the leadscrew (78). Therefore, if the leadscrew (78) is not aligned with the housing (12), the leadscrew will pivot the gear nut (64) so that the gear nut (64) remains aligned with the leadscrew (78) and movement of the leadscrew (78) can continue.

L'actionneur de l'invention comprend un corps (12) et un écrou d'engrenage (64) logé dans le corps (12). Une vis sans fin (78), sur laquelle est enfilé l'écrou d'engrenage (64), traverse le corps (12). Lorsque la vis sans fin (78) se déplace axialement, l'écrou d'engrenage (64) tourne. Afin d'éviter le décentrage entre l'écrou d'engrenage (64) et la vis sans fin (78), les parois externes (74 et 76) de l'écrou d'engrenage et les surfaces d'appui (30 et 46) à l'intérieur du corps (12) permettent le pivotement de l'axe de rotation de l'écrou d'engrenage dans n'importe quel sens ainsi que tout pivotement de la vis sans fin (78), tout en permettant la rotation de l'écrou d'engrenage (64) autour de la vis sans fin (78). Par conséquent, si la vis sans fin n'est pas dans l'alignement du corps (12), elle fera pivoter l'écrou d'engrenage (64) de sorte qu'ils restent tous les deux dans le même alignement et que la vis sans fin (78) continue de se déplacer.

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