Planetary gear transmission systems or components – Planetary gearing or element
Patent
1992-04-14
1993-12-07
Braun, Leslie A.
Planetary gear transmission systems or components
Planetary gearing or element
74 7E, 74DIG10, 475902, F16H 5502, F16H 5506, F02N 1502
Patent
active
052679187
ABSTRACT:
In an epicycle reduction gear type starter device comprising a ring-shaped internal gear 20 which is molded from resin and secured to a front frame so as to engage with planet gears driven by a DC motor, the internal gear 20 has ribs 21 in the outer periphery of an annular inner portion and which are substantially equal in thickness and are arranged at substantially equal angular intervals, and a cylinder 22 which is small in wall thickness to which the outer radial edges of the ribs are connected, locking protrusions 23 are formed on the cylinder 22 which are locked to the front frame so as to prevent the rotation of the internal gear, and through-holes 24 are formed in the locking protrusions 23, respectively, into which through-bolts are inserted to secure the DC motor and the front frame. According to the arrangements, the teeth of the internal gear are prevented from being broken, and the lowering in gear accuracy of the internal gear is prevented which is caused when, in molding the, internal gear, the portion of the molding is deformed which corresponds to the locking means which is engaged with the starter frame for prevention of the rotation of the internal gear.
REFERENCES:
patent: 3081648 (1963-03-01), Duer
patent: 3376761 (1968-04-01), Stepputtis
patent: 4561316 (1985-12-01), Bolz et al.
patent: 4590811 (1986-05-01), Kasubuchi
patent: 4604907 (1986-08-01), Morishita et al.
patent: 4635489 (1987-01-01), Imamura et al.
patent: 4680979 (1987-07-01), Morishita et al.
patent: 4715243 (1987-12-01), Morishita et al.
patent: 5086658 (1992-02-01), Isozumi
patent: 5088338 (1992-02-01), Konishi
patent: 5098358 (1992-03-01), Igaku
patent: 5157978 (1992-10-01), Morishita et al.
Braun Leslie A.
Henn David E.
Mitsubishi Denki K.K.
LandOfFree
Ring-shaped internal gear for epicyclic reduction gear type star does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ring-shaped internal gear for epicyclic reduction gear type star, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ring-shaped internal gear for epicyclic reduction gear type star will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2012787