STARTING DEVICE FOR AN INTERNAL COMBUSTION ENGINE

摘要

The invention relates to a starting device (10) for an internal combustion engine, the starting device (10) comprising a hub (12; 70) configured to drivingly engage an internal combustion engine when the hub (12; 70) is rotated in a first direction (A); a pulley (14; 47; 60) interconnected with the hub (12; 70) by a spring (23; 41); a shaft (21) on which the pulley (14; 47; 60) and hub (12; 70) are mounted independently rotatable; a flexible member (16) attached to and coiled about the pulley (14; 47; 60); and where the spring (23; 41) coupled at a first end (26; 53) to the hub (12; 70) and at a second end (28; 54) to the pulley (14; 47; 60). The pulley (14; 47; 60) comprises a recess (15) arranged to receive the flexible member (16), which recess has the shape of a conical helix having a first end (15A) with a first diameter and a second end (15B) with a second diameter, larger than the first diameter; and is attached to the pulley (14; 47; 60) at the second end (15B).

主权项

1. A starting device for an internal combustion engine, the starting device comprising:
a hub configured to drivingly engage an internal combustion engine when the hub is rotated in a first direction; a pulley interconnected with the hub by a spring; a shaft on which the pulley and hub are mounted independently rotatable; a flexible member attached to and coiled about the pulley; and the spring coupled at a first end to the hub and at a second end to the pulley, wherein the pulley is rotated in the first direction when the flexible member is pulled and unwound, wherein the spring is arranged to act on the hub during start, wherein the pulley comprises a recess arranged to receive the flexible member, which recess substantially has the shape of a conical helix having a first end with a first radius and a second end with a second radius, larger than the first radius; and wherein the flexible member is attached to the pulley at the second end.