초록 ▼

A recoil type starter device for an internal combustion engine is provided which includes a starting pulley fixed at one end of the engine crank shaft and having a plurality of openings in its circumferential side surface; and a rotatable rope pulley confronting the starting pulley and mounted on a

A recoil type starter device for an internal combustion engine is provided which includes a starting pulley fixed at one end of the engine crank shaft and having a plurality of openings in its circumferential side surface; and a rotatable rope pulley confronting the starting pulley and mounted on a separate fixed shaft, said rope pulley having a pawl to engage any of the openings of the starting pulley to transmit rotational force of the rope pulley to the starting pulley at the start of the engine, a spiral spring to take up the starting rope around the periphery of the rope pulley after start of the engine, a disc fixedly mounted on the shaft of the rope pulley, and a U-shaped wire spring, one end of which is connected to a spring fitting part on the pawl, and the other end of which is frictionally contacted around the circumference of the stationary disc. The spring normally biases the pawl to retracted position, but serves as a drag link to pull the pawl into erected position upon rotation of the rope pulley in a starting direction. A projected member is provided on the side surface of the rope pulley to contact with a tail of the wire spring wound around the stationary disc, when the pawl engages the starting pulley, to reduce the frictional contact force of the wire spring with respect to the stationary disc.

대표청구항 ▼

A recoil type starter for an internal combustion engine which comprises in combination: (a) a casing; (b) a starting pulley which is fixed at one end of an engine crank shaft within said casing, and has at least one opening in the peripheral side surface thereof; (c) a rope pulley which is provided

A recoil type starter for an internal combustion engine which comprises in combination: (a) a casing; (b) a starting pulley which is fixed at one end of an engine crank shaft within said casing, and has at least one opening in the peripheral side surface thereof; (c) a rope pulley which is provided in confrontation to said starting pulley and is rotatably supported on a shaft within and fixedly carried by said casing; (d) a forwarding pawl having a pawl portion at one end thereof to be engaged with the opening of said starting pulley and a spring fitting portion at the other end thereof, and which is supported on the shaft in a manner oscillatable on the side surface of said rope pulley to transmit the forward rotational force of said rope pulley to said starting pulley in engagement with the opening thereof at the start of the engine; (e) a spiral spring to take up a starting rope around the periphery of the rope pulley after start of the engine by reversely rotating the rope pulley; (f) a stationary disc having a groove on the circumference thereof, and which is mounted on the said supporting shaft of said rope pulley; (g) a wire spring having a part in the shape of a letter “U,”one end of a leg of which is connected to the spring fitting part of said forwarding pawl, and the end of the other leg of which is extended to form a ring-shaped section which is frictionally contacted around the circumference of said stationary disc in a substantially single turn, terminating in a tail, said wire spring having a force which tends to cause the opposing two legs of the U-shaped part thereof to open outwardly to a position to cause the forwarding pawl normally to be retracted, said spring acting as a drag link between said forwarding pawl and said disc when said rope pulley is rotated relative to said disc in a starting direction to cause said forwarding pawl to be erected with rotation of said rope pulley; (h) a stop which is fixedly provided On the side surface of said rope pulley to limit the angle of erection of said forwarding pawl and to cause said forwarding pawl to be engaged with the opening of said starting pulley; and (j) a projected member which is provided on the side surface of said rope pulley to contact with the tail of said wire spring frictionally contacted around said stationary disc, when said forwarding pawl becomes engaged with the starting pulley to reduce the frictional contact force of said wire spring with respect to said stationary disc.