초록 ▼

The control device comprises a motor (5) having a shaft (7a) provided at one end with a worm (8a) to drive a nut-wheel (9a), the set of the worm (8a) and of the nut-wheel (9a) forming part of a reduction gear (R). A screw (12a) cooperates with the nut (11a). This screw (12a) is fixed in rotation aro

The control device comprises a motor (5) having a shaft (7a) provided at one end with a worm (8a) to drive a nut-wheel (9a), the set of the worm (8a) and of the nut-wheel (9a) forming part of a reduction gear (R). A screw (12a) cooperates with the nut (11a). This screw (12a) is fixed in rotation around its axis. The reduction gear (R) comprises a stirrup (26a) comprising two intersecting cylindrical sleeves (30a, 31a) communicating through an opening (W). One (30a) of these sleeves receives the nut-wheel (9a). The worm (8a) is accommodated in a tube (10a), connected to the casing (6) of the motor (5), which comprises a window (32a) on its cylindrical wall at one end intended to be engaged in the other sleeve. For the assembly of the reduction gear, the above mentioned end of the tube (10a) is fitted in the other sleeve (31a) of the stirrup (26a) so that the above mentioned window should come to be opposite the above mentioned opening (W). The threads of the worm (8a) project through the said window (32a) to mesh with the nut-wheel (9a).

대표청구항 ▼

A device for controlling the displacement of an element in relation to a base comprising a motor having a shaft provided at an end with a worm, the shaft having an axis extending in a given direction, a stirrup including two orthogonal and intersecting cylindrical sleeves defining an opening at the

A device for controlling the displacement of an element in relation to a base comprising a motor having a shaft provided at an end with a worm, the shaft having an axis extending in a given direction, a stirrup including two orthogonal and intersecting cylindrical sleeves defining an opening at the intersection thereof, one of said sleeves of said stirrup having a nut-wheel disposed therein, said nut-wheel having an axis of rotation that is orthogonal to the shaft axis, said worm being housed in a tube and said motor having a casing connected to said tube, said tube having a cylindrical wall which includes a first window located adjacent said opening whereby a portion of said worm projects through said first window of said tube and said opening to engage said nut-wheel in said one sleeve, said one sleeve having open opposite ends and the device further including a surrounding component having parallel faces disposed to close said ends of said one sleeve, said parallel faces having holes for receiving a screw which cooperates with said nut-wheel; means for flexibly securing said stirrup relative to said base including a frame which defines a second window, said frame connected to said base and said second window receiving a portion of said stirrup so that said frame completely surrounds said portion to allow limited displacement of said stirrup relative to said base in said given direction, said stirrup and said means for securing further including conjugate connection means for preventing displacement of said stirrup relative to said base in a second direction which is mutually perpendicular to said given direction and said axis of rotation of said nut-wheel; said screw having means for detachable connection to said displaceable element including a head provided with an eye for receiving a pin connected to said displaceable element.