Centrifugal clutch

A centrifugal clutch comprising:

• a support disk (2), operatively associated with a drive shaft, having a first surface (2a) a second surface (2b) and a seat (11a);
• at least one centrifugal mass (3) pivoted on the first surface (2a) of the support disk (2) having an axis of rotation (X), said mass (3) being provided with a friction pad (8);
• an external drum (9), operatively associated with a driven shaft, coaxial to the support disk (2) and having an inner wall (9a) against which the friction pad (8) comes in contact by effect of the centrifugal force;
• means (30) for returning said centrifugal mass (3), connected to said support disk (2), including:
• an elastic element (12), having two ends, positioned within the seat (11a) and a first end supported by a bottom (11b) of the seat (11a);
• at least one motion transferring element (15) acting between each centrifugal mass (3) and the corresponding elastic element (12);
• and
• at least one adjusting element (14) acting on the second end of the elastic element (12), for varying pre-load of the elastic element (12), the adjusting element (14) being positioned and operable in a substantially parallel manner to the axis (X) of rotation of the support disk (2).

A centrifugal clutch comprising:

• a support disk (2), operatively associated with a drive shaft, having a first surface (2a) a second surface (2b) and a seat (11a);
• at least one centrifugal mass (3) pivoted on the first surface (2a) of the support disk (2) having an axis of rotation (X), said mass (3) being provided with a friction pad (8);
• an external drum (9), operatively associated with a driven shaft, coaxial to the support disk (2) and having an inner wall (9a) against which the friction pad (8) comes in contact by effect of the centrifugal force;
• means (30) for returning said centrifugal mass (3) connected to said support disk (2), including:
• an elastic element (12), having two ends, positioned within the seat (11a) and a first end supported by a bottom (11b) of the seat (11a);
• an adjusting element (14) acting on the second end of the elastic element (12), for varying pre-load of the elastic element (12), said adjusting element (14) being operable and being positioned in a substantially parallel manner to the axis (X) of rotation of the support disk (2);
• at least one motion transferring element (15) for transferring motion between the at least one centrifugal mass (3) and the corresponding elastic element (12);
• a plate (17) having a hole (17c) for connecting the plate (17) with the support disk (2) and connected to the at least one motion transferring element (15), wherein said plate (17) has a central portion (171) and at least two substantially circular planar portions (172), extending from the central portion (171) in radial direction, each motion transferring element (15) extending from said central portion (171) in a direction substantially orthogonal to said circular portions (171).

A centrifugal clutch comprising:

• a support disk (2), operatively associated with a drive shaft, having a first surface (2a) a second surface (2b) and a seat (11a);
• at least one centrifugal mass (3) pivoted on the first surface (2a) of the support disk (2) having an axis of rotation (X), said mass (3) being provided with a friction pad (8);
• an external drum (9), operatively associated with a driven shaft, coaxial to the support disk (2) and having an inner wall (9a) against which the friction pad (8) comes in contact by effect of the centrifugal force;
• means (30) for returning said centrifugal mass (3) connected to said support disk (2), including:
• an elastic element (12), having two ends, positioned within the seat (11a) and a first end supported by a bottom (11b) of the seat (11a);
• at least one motion transferring element (15) for transferring motion between the at least one centrifugal mass (3) and the corresponding elastic element (12);
• a plate (17) having a hole (17c) for connecting the plate (17) with the support disk (2) and a central portion (171) and at least two substantially circular planar portions (172), extending from the central portion (171) in radial direction, the at least one motion transferring element (15) being connected to the plate (17) and extending from said central portion (171) in a direction substantially orthogonal to said circular portions (171);
• an adjusting element (14) acting on the second end of the elastic element (12), for varying pre-load of the elastic element (12), said adjusting element (14) being operable and being positioned in a substantially parallel manner to the axis (X) of rotation of the support disk (2);
• and
• means (31) for setting the elastic element (12).