Geared motor for the drive of components, such as...

Details Geared motor for the drive of components, such as... Geared motor for the drive of components, such as...

E - Fixed Constructions

05

F

E05F 15/10 (2006.01) B60J 7/057 (2006.01) F16H 1/32 (2006.01) F16H 21/14 (2006.01)

Patent

CA 2045985

- i - Geared motor for the drive of components, such as motor- vehicle accessories, particularly an opening roof. ABSTRACT This geared motor comprises an output shaft (2) of the motor (1), carrying two coaxial screws (3, 4) offset axially and of mutually opposed screw pitch, two gearwheels (5, 6) located on either side of the shaft and each interacting with a screw (3, 4), an axle (7, 8) fastened to each gearwheel and extended by a crankpin (9, 11) eccentric relative to the corresponding axle (7, 8) so as to be capable of executing rotations about this axle, an element (12) equipped with a toothing (13) and linked to the crankpins in such a way as, during the rotation of the crankpins, to be driven in a circular translational movement, the radius of which is equal to the eccentricity of the crankpins, and a member (16) equipped with an output shaft (18) connectable to the component to be driven and carrying a toothing (17) interacting with that of the said element so as to bring about a rotation of the member (16) in a ratio determined by the difference in the numbers of teeth of the two toothings. This arrangement makes it possible to accom- modate the geared motor in a very small space, whilst at the same time ensuring that it has sufficient resistance to very high torques.

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