Machine element or mechanism – Engine starters
Patent
1989-08-11
1990-07-03
Diehl, Dwight
Machine element or mechanism
Engine starters
74 7R, 123179M, F02N 1100
Patent
active
049380842
ABSTRACT:
A starter for an internal combustion engine is disclosed which comprises a motor, an output shaft operatively coupled to the armature shaft of the motor, and an axially slidable assembly splined to the output shaft and including an overrunning clutch and a hollow shaft having a pinion formed at the front end thereof.
According to a first aspect of the invention, at least a portion of the pinion, the teeth of which have a top surface of substantial circumferential width, is, when the hollow shaft is at the extreme rear position, received into and supported by an annular ball bearing which is mounted to the front frame to rotatably and axially slidably support the hollow shaft. According to a second aspect, the rear side surface of the ball bearing mounted to the front frame to support rotatably the hollow shaft abuts against the front side of the clutch to stop the forward movement of the axially slidably assembly. According to a third aspect, the output shaft forms an integral front extension of the armature shaft of the motor, and a stopper, i.e. an outwardly extending flange formed on the outer circumferential surface of the hollow shaft, abuts against the rear side of the annular bearing to stop the forward movement of the axially slidably assembly. The axially backward reaction acting on the output shaft at the splined portion from the axially slidable assembly is countered by an axially forward force generated by the axially backward deviated position of the armature of the motor with respect to the field magnets, or, alternatively, by an annular frustoconical leaf spring which is mounted to the rear bracket and bears against an annular disk mounted to a rear end portion of the armature shaft.
REFERENCES:
patent: 4304140 (1981-12-01), Ebihara
patent: 4412457 (1983-11-01), Colvin et al.
patent: 4573364 (1986-03-01), Divan
patent: 4590811 (1986-05-01), Kasubuchi
Isozumi Shuzoo
Morishita Akira
Anchell Scott
Diehl Dwight
Mitsubishi Denki & Kabushiki Kaisha
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