Patent ID: 7069896
Filing Date: 2006-07-04
Classification: F02N

Abstract:
1. A recoil starter comprising: a casing including a reel shaft disposed coaxially with a crankshaft of an engine, which crankshaft has a rotating member coupled thereto; a rope reel rotatably supported on said reel shaft and provided at an outer periphery thereof with a drum portion around which a recoil rope is wound; a recoil spring for rotationally urging said rope reel in a direction in which said recoil rope is rewound; a cam, rotatably supported on said reel shaft, for transmitting a rotation thereof to said rotating member via a clutch mechanism; and a damper spring, disposed between said rope reel and said cam, for transmitting a rotation of said rope reel to said cam using a resilient action, wherein annular recesses are formed in mutually opposing joint surfaces of said rope reel and said cam, respectively, in a manner to face each other, said damper spring being received in said annular recesses while opposite ends of said damper spring are respectively held at said rope reel and said cam so that said rope reel and said cam are rotationally coupled together via said damper spring; said casing includes a side wall having air inlets formed therein for introducing air for cooling the engine; and said rope reel includes a boss portion which forms the annular recess of said rope reel, said rope reel having air passages which are formed between said drum portion and said boss portion thereof in such a manner as to face said air inlets formed in said casing, the boss portion of the rope reel and the cam have outer walls which form the respective annular recesses and which are located radially inwardly of the air passages and the damper spring comprises a torsion coil spring.