Automatic device for guiding and advantages of a movable piece articulee about an axis on a fixed piece considered about this axis.

摘要

PCT No. PCT/FR96/01140 Sec. 371 Date Apr. 29, 1998 Sec. 102(e) Date Apr. 29, 1998 PCT Filed Jul. 19, 1996 PCT Pub. No. WO97/05396 PCT Pub. Date Feb. 13, 1997An automatic device (1) for index guiding a part (2) pivotably mounted about an axis (3) on a part (4) that is stationary relative to the axis (3). The device uses a mechanism (5) provided with a ratchet (6) that is pivotable between a number of positions including a fully engaged position, an adjustment position, and a fully spaced position. A toothed surface (6B) of the ratchet (6) is formed in an angular sector (6S) which, in the fully engaged position, is centered on the rotational axis (3) of the movable part and does not include a pivot axis (6A) of the ratchet (6).