Abstract: A starter for a small-sized engine, capable of reliably starting the engine by a rope reel and stably supporting a drive cam. The starter has, received in a starter case, a cylindrical drive cam having a starter clutch mechanism, the rope reel for a recoil starter, and a starter motor, where the drive cam can be selectively operably connected to the rope reel or a starter motor. The rope reel is directly operably connected to the drive cam through a one-way clutch mechanism. Support plates are formed projected from the inner surface of the starter case toward the outer peripheral surface of the drive cam. Opposite ends of the drive cam are rotatably supportedly fitted into bearing holes formed in the support plates.

Abstract: A starting apparatus of a small-sized engine includes: a cylindrical cam; a drive gear connected to the cylindrical cam coaxially, wherein: whereas the drive gear is made to be connected to a rope reel by ratchet claws, the drive gear is made to be connected to a cell motor by at least two pieces of reduction gears; and a reduction gear in the reduction gears brought in mesh with the drive gear is divided into a small diameter gear portion and a large diameter gear portion to be arranged coaxially, side faces of the small and the large diameter gear portion opposed to each other are formed with engaging claws engaged with each other only in one direction, and the small and the large diameter gear portion are urged as the two side faces are brought into contact with each other.

Abstract: A starter for a small-sized engine, capable of reliably starting the engine by a rope reel and stably supporting a drive cam. The starter has, received in a starter case, a cylindrical drive cam having a starter clutch mechanism, the rope reel for a recoil starter, and a starter motor, where the drive cam can be selectively operably connected to the rope reel or a starter motor. The rope reel is directly operably connected to the drive cam through a one-way clutch mechanism. Support plates are formed projected from the inner surface of the starter case toward the outer peripheral surface of the drive cam. Opposite ends of the drive cam are rotatably supportedly fitted into bearing holes formed in the support plates.

Abstract: A starting system for a small-sized engine is described which achieves downsizing, light-weight, and cost reduction of the system, prevents entry of dust or foreign substances at the time of assembly, and achieves easy assembly of a motor. The starting system for a small-sized engine includes a recoil starting system and a motor starting system integrated in a starter case, in which the motor starting system has a configuration in which a pinion is mounted on an output shaft of a reducer motor by an one-way clutch of a needle bearing and the pinion is engaged with a starting gear 6 of an engine, and the starter case has a configuration in which an inner lid is secured to a crankcase of the engine together by a screw and the inner lid has a joint portion with respect to the crankcase and a mounting seat for the reducer motor on the outside thereof.

Abstract: Energy is stored in the horse power spring to surely start the engine. The stopper having the engaging engageable with the end behind the rotation direction of the cam plate depressed area is arranged at near the cam plate which is integrally formed with pulley fixed to the engine crank shaft and has the depressed area to the disk rim, and the urging means supporting the stopper in a movable manner to the engaging position where the engaging engages with the depressed area and to the avoidance position for avoiding the rim of cam plate, and normally urging to move the stopper to the avoidance position, on the other hand, enabling the stopper to move to the engaging position from the outside, and urging not to move the stopper to the avoidance position until a sufficient rotation load is added to the cam plate at the engaging position is provided.

Abstract: A recoil starter includes: a rope reel on which a recoil rope, one end of which is held on an outside of a starter case, is wound and which is fitted turnably on a reel pivot formed on an inside of the starter case; a recoil spring that turns and energizes the rope reel in a direction along which the recoil rope is rewound; a cam member one end of which is fitted turnably onto the reel pivot to oppose to the rope reel and which transfers a turning to an engine side via a ratchet mechanism; and a coil spring-like damper spring both ends of which are engaged with the rope reel and the cam member respectively; a bearing portion that supports turnably the cam member; and a dust cover provided integrally with the starter case.

Abstract: A recoil starter includes: a rope reel; a cylindrical cam; a coil spring; a reel spindle; an extending cylindrical portion; a recess; a hook; an engaging groove; an inner annular portion; and an outer annular portion, wherein: the extending cylindrical portion is inserted in the inner side of the recess; the coil spring is wound on the outer side of the extending cylindrical portion; the hook is engaged with the engaging groove; an end portion opposite the hook of the coil spring is engaged with the cylindrical cam; the inner annular portion is made flush; and the outer annular portion is made such that a portion corresponding to the engaging groove is formed to have the same height as that of the inner annular portion whereas an opposite side is formed to have a larger height than that of the inner annular portion.

Abstract: The invention relates to a power transmission mechanism between an engine starting device and an engine. A side surface shape of a lever-shaped engaging and disengaging member (107) in a side facing to a ratchet wheel (120) of a rotation driven portion is formed in a concave shape concaved in a direction away from the wheel (120). The lever-shaped engaging and disengaging member (107) is engaged with and disengaged from a centrifugal clutch mechanism of the engine engaging with and disengaging from the ratchet wheel (120). A first engaging and disengaging lever (141) is engaged with the ratchet wheel (120), a sufficient force to start the engine is accumulated in a force accumulating power spring (131), thereafter the engagement of the first engaging and disengaging member (141) is disconnected by a manual operation, and the ratchet wheel (120) is rapidly rotated by releasing the accumulated force in the force accumulating power spring (131).

Abstract: A rotary cutter for a mowing machine includes a cord for mowing grass by rotating, a reel which contains the cord and intermittently rotates to pay out the cord, a case which contains the reel, and a cover which covers the case, wherein the reel includes an upper cam and a lower cam, a stopper is incorporated in the case at a center of a bottom thereof, one end of the stopper is engaged with the upper cam thereby to stop the rotation of the reel, the other end of the stopper is engaged with the lower cam, one end of the cord is engaged with the stopper from outside thereof and guided out of the rotary cutter through a cord guide, and the other end of the cord is guided out of the rotary cutter without touching the stopper.

Abstract: A recoil starter includes: a rope reel; a cylindrical cam; a coil spring; a reel spindle; an extending cylindrical portion; a recess; a hook; an engaging groove; an inner annular portion; and an outer annular portion, wherein: the extending cylindrical portion is inserted in the inner side of the recess; the coil spring is wound on the outer side of the extending cylindrical portion; the hook is engaged with the engaging groove; an end portion opposite the hook of the coil spring is engaged with the cylindrical cam; the inner annular portion is made flush; and the outer annular portion is made such that a portion corresponding to the engaging groove is formed to have the same height as that of the inner annular portion whereas an opposite side is formed to have a larger height than that of the inner annular portion.

Abstract: A recoil starter includes a reel/cam unit defined with a rope reel wound with a starter rope and urged to pivot in a direction of reeling the starter rope, and a cam in a cylindrical shape for transmitting rotation of the rope reel to an output shaft on a side of an engine. A damper unit connects the rope reel and the cam, and a reel support shaft supports the rope reel and the cam. A draw-out preventing unit restricts the reel/cam unit from being moved along the reel support shaft. One side of the cam is extended to form a cylindrical extended portion, where the rope reel is fitted to an outer side of the cylindrical extended portion. The cylindrical extended portion is rotatably fitted to an outer side of the reel support shaft.

Abstract: A recoil starter enabling a power-driven device to be coupled to a crankshaft of an engine in a state where the recoil starter is mounted to the crankshaft on the same side of the engine as the crankshaft is disposed on. A starter housing is provided on an inside thereof with a reel support shaft which projects coaxially with the crankshaft. A rope reel having a recoil rope wound thereon and a cam, which transmits rotation via centrifugal ratchets to the crankshaft, are rotatably mounted on the reel support shaft while they are rotatingly coupled to each other via a damper spring. An opening is formed in the reel support shaft so as to extend from a distal end thereof near the crankshaft to the outside of the starter housing. A drive shaft of the device is coupled to the crankshaft inside the opening. An annular plate is secured to the starter housing to prevent the cam and rope reel from being detached from the reel support shaft.

Abstract: A coil starter formed so that the rotation of a rope reel is transmitted to a cam member via a coil spring-like damper spring both ends of which are engaged with the rope reel and cam member respectively, wherein the rope reel or cam member is provided with a boss portion the length of which is substantially equal to that of a wound portion of the damper spring, the inner circumferential side of substantially the whole length of the damper spring being supported on the boss portion, the wound portion of substantially the whole length of the damper spring being thereby wound uniformly and tightly around the outer circumferential surface of the boss portion when the damper spring is elastically deformed due to the engine starting resistance.

Abstract: A starting apparatus of a small-sized engine includes: a cylindrical cam; a drive gear connected to the cylindrical cam coaxially, wherein: whereas the drive gear is made to be connected to a rope reel by ratchet claws, the drive gear is made to be connected to a cell motor by at least two pieces of reduction gears; and a reduction gear in the reduction gears brought in mesh with the drive gear is divided into a small diameter gear portion and a large diameter gear portion to be arranged coaxially, side faces of the small and the large diameter gear portion opposed to each other are formed with engaging claws engaged with each other only in one direction, and the small and the large diameter gear portion are urged as the two side faces are brought into contact with each other.

Abstract: A recoil starter in which a side face of a rope reel is formed with a ring-like recess portion for containing a damping force storing member, a boss portion of a cam is contained at inside of the ring-like recess portion and the damping force storing member is contained between an inner peripheral face of the ring-like recess portion and an outer peripheral face of the boss portion of the cam, an inner side of the boss portion of the cam is formed with a ratchet mechanism for engaging and disengaging the cam to and from the rope reel, when the rope reel is rotated by traction of the recoil rope, the both members are disengaged from each other and when the rope reel is rotated in a direction of reeling back the recoil rope, the both members are engaged with each other.

Abstract: A recoil starter includes: a reel/cam unit including: a rope reel wound with a starter rope and urged to pivot in a direction of reeling the starter rope; and a cam in a cylindrical shape for transmitting rotation of the rope reel to an output shaft on a side of an engine; a damper unit for connecting the rope reel and the cam; a reel support shaft for supporting the rope reel and the cam; and a draw-out preventing unit for restricting the reel/cam unit from being moved along the reel support shaft, wherein: one side of the cam is extended to form a cylindrical extended portion; the rope reel is fitted to an outer side of the cylindrical extended portion; and the cylindrical extended portion is rotatably fitted to an outer side of the reel support shaft.

Abstract: A damper spring having a torsion coil spring-like shape is placed on outer peripheries of bosses respectively formed on a rope reel and a cam. The ends of the damper spring are engaged with the rope reel and the cam, respectively, so that the rope reel and the cam are rotatingly coupled with each other. A wire member constituting the damper spring is formed so as to have a section shape in which at least one side is linearly formed, and the damper spring is formed by winding the wire member into a coil-like shape so that the linear portion of the wire member is placed on an inner peripheral side, thereby enabling the inner side face of the damper spring to be tightly wound in a wide area around outer peripheral faces of the bosses.

Abstract: A recoil starter capable of introducing cooling air into an engine through the recoil starter and reducing a size and weight thereof. Annular recesses are formed in opposing joint surfaces of a rope reel and a cam, respectively, in a manner to face each other. A damper spring is received in the annular recesses while opposite ends thereof are respectively held at the rope reel and the cam so that the rope reel and the cam are rotationally coupled together via the damper spring. Air inlets for introducing air for cooling the engine are formed in a side wall of a casing. Air passages facing the air inlets of the casing are formed between a drum portion at an outer periphery of the rope reel and a boss portion forming the annular recess of the rope reel.

Abstract: A drive pulley is formed in a cup-like shape one end side of which is integrally formed with a peripheral wall in a cylindrical shape, the peripheral wall in the cylindrical shape of the drive pulley is formed with openings to be engaged with a ratchet member at intervals of 90 degrees along a circumferential direction, an engaging face for engaging with the ratchet member is formed at a side edge of each for the openings directed in an engine starting direction, and a side edge opened substantially orthogonal to the engaging face or by an angle equal to or larger than 90 degrees is formed at a side edge of the opening on an opposed side opposed to the engaging face.

Abstract: A recoil starter in which a side face of a rope reel is formed with a ring-like recess portion for containing a damping force storing member, a boss portion of a cam is contained at inside of the ring-like recess portion and the damping force storing member is contained between an inner peripheral face of the ring-like recess portion and an outer peripheral face of the boss portion of the cam, an inner side of the boss portion of the cam is formed with a ratchet mechanism for engaging and disengaging the cam to and from the rope reel, when the rope reel is rotated by traction of the recoil rope, the both members are disengaged from each other and when the rope reel is rotated in a direction of reeling back the recoil rope, the both members are engaged with each other.