Clutch rocker mechanism for transfer case

192 clutches and power-stop control – Clutches – Plural clutch-assemblage

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Details

192 71, 192 93B, 192108, F16D 1112, F16D 2102

Patent

active

047211946

ABSTRACT:
An improved clutch shift mechanism for use with a motor vehicle transfer case. A cylindrical drive shell is concentrically positioned around a shaft axis in spaced relation to a relatively rotatable coaxial coupling member formed with external spline teeth. A plurality of axially directed circumferentially spaced slots are provided in the drive shell with each slot receiving a rocker key having an internal spline tooth at each ends of its inner face. The interior of the drive shell has grooves sized to capture therein a center and side annular springs. Each rocker key inner surface has a center notch and side notches receiving their associated springs therein with the key in its neutral position. An axially slidable shift ring surrounds the shell and includes an annular cam surface engaging a central depression in each key. Upon the shift ring being moved axially, each key is pivoted about the central spring causing the side spring to be compressed until each rocker key tooth drivingly engages a coupling members external spines. The side spring is operative to resiliently bias each rocker key one end to its neutral position upon the shaft ring being returned to its centered neutral position.

REFERENCES:
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patent: 2447058 (1948-08-01), Dence
patent: 3333661 (1967-08-01), Pawlina et al.
patent: 3502184 (1970-03-01), Pawlina et al.
patent: 3938634 (1976-02-01), Frost
patent: 4033437 (1977-07-01), Labat
patent: 4373604 (1983-02-01), Lunn et al.
patent: 4408684 (1983-10-01), Gladich
patent: 4677873 (1987-07-01), Eastman et al.

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