Starting Industrial Co., Ltd.

Mitsuo Osakabe

Shuhei Tsunoda

Keizo Shimizu

Seiichi Nieda

A starting device for an electric starter motor is described which is capable of downsizing a small-sized motor per se without increasing torque of the small-sized motor by deceleration by gears, is capable of being fabricated in a small size as a whole and inexpensively, and is capable of setting a reduction gear having desired dimensions without significantly changing sizes in a radial direction and in an axial direction of total of a starter case. The starting device for an electric starter motor includes a ring gear driven by two or more small-sized motors and a clutch mechanism installed between the ring gear and an engine for starting the engine by rotating the ring gear. Featured in the starting device for an electric starter motor is a reduction gear which is interposed between the small-sized motors and the ring gear. The reduction gear is arranged on an outer side of the ring gear.

Starting device for electric starter motor

There is provided a recoil starter for starting an internal combustion engine which has a simple and compact structure with a reduced number of parts and which can be manufactured at a reduced cost. In a recoil starter wherein a shaft portion 2' having a reel 3' rotatably attached thereto is provided on a starter case 1 and wherein a rope 4 wound around the reel 3' by a restoring force of a spring 5 is drawn out to rotate the reel 3' thereby driving a pulley 31 to start an internal combustion engine, a configuration is employed wherein a frictional resistance means is provided on the shaft portion 2'; one end of an arm 28 assembled with frictional resistance against the rotation of the reel 3' is anchored or press-fitted to the friction resistance means with another end thereof engaged with a guide groove 27 on the reel 3'; and the rotation of the reel 3' causes the other end of the arm 28 to move in the guide groove 27 for a swinging motion which causes the arm 28 to be engaged with a notch 32 on the pulley 31. This allows the number of parts to be reduced to achieve a reduced overall size and allows manufacturing cost to be reduced.

Recoil starter

A recoil starter is provided which prevents malfunction, such as disengagement of a claw, after the engine is started repeatedly even if the starter is not made of a material of high intensity. A spring can be wound substantially precisely circularly. It is quite easy to mount a friction plate to the starter. Furthermore, this subassembly does not loosen after long-term usage. A rope guide can be easily mounted to the starter case, thus reducing the fabrication cost. The recoil starter can be placed and locked in position relative to a fan cover with high accuracy. When the ratchet is in its protruded position, the pivotal point of the ratchet is located radially inside a pulley around the position where the pulley engages the ratchet. A ratchet support portion is formed radially outside the pulley on the reel. The ratchet forms a beam supported at its both ends. The beam acts against a force exerted by the pulley due to a resistance produced when the engine is started. A cover is mounted at the top end of the support portion to prevent the ratchet from moving toward the top end of the ratchet. A cylindrical engaging portion is formed on the outer surface of the stem of the starter case. One end of the spring engages this engaging portion. A rope takeout port is formed in the outer surface of the case such that the rope is payed out while tilted upwardly from a horizontal plane. The rope guide made of a hard material and acting to guide the rope is fitted over the case between the rope takeout port and the reel.

A recoil starter casing is made from a plate. The plate has a polygonal top face and a plurality of rectangular side faces integral with and extending from respective edges of the top face. Each of the side faces includes a recess in its edge, and a pair of projections at opposite ends of the recess. A plurality of air inlets are formed in the side faces. The side faces are bent from the top face along the respective edges of the top face. A fan cover has slots. The projections are inserted into the corresponding slots. The free ends of the projections are then bent so as to secure the starter casing to the fan cover. The inside of the starter casing is cooled through the air inlets and the recesses or air vents.

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Gunma-gun, Japan

Mitsuo Osakabe