FIELD: transport engineering; bicycles.
SUBSTANCE: invention relates to method of changing over of chain trains by means movable chain shifter. Base link 114 is hinge-connected with movable link 118 by means of first lever link 122 and second lever link 124. First end 148 of shifting spring 144 is secured on base link 114 in point 150 displaced relative to first hinge pin 128 equipped with bearing 162 and connecting first lever link 122 and base link 114. Second end of shifting spring 144 is secured on first lever link 122 on which drive lever 155 with control element 156 is installed made in form of cable deflected from longitudinal axis of first lever link 122 to provide action of forces of spring 144 in opposite directions, and force of control element 156 relative to longitudinal axis of first lever link 122. Invention is aimed at accumulating load on that hinge pin only which is furnished with bearing, thus providing increase of possible load of change-speed control mechanism at reduced cost.
EFFECT: reduced cost of mechanism.
10 cl, 7 dwg
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