Starter for an internal combustion engine

Details Starter for an internal combustion engine Starter for an internal combustion engine

1989-08-11

1990-07-31

Bonck, Rodney H.

Machine element or mechanism

Engine starters

74 7R, 123179M, F02N 1102

Patent

active

049441922

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 couteracted by an axially forward force generated by the axial 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: 1138286 (1915-05-01), Grillet et al.
patent: 1235163 (1917-07-01), Rushmore
patent: 1501497 (1924-07-01), Schwarz
patent: 3171284 (1965-03-01), Scherzinger
patent: 4304140 (1981-12-01), Ebihara
patent: 4455490 (1984-06-01), Giardini et al.

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