Need help with a mechanism design
Need help with a mechanism design
(OP)
Need help in locating details of a trash can open/close mechanism, ie.. flipping a trash can lid open by stepping on a foot pedal. Actually I need to do the reverse motion, closing the lid(by rotation) by displacing a smaller linear movement. Hope someone can help.
Thanks,
Thanks,





RE: Need help with a mechanism design
"Happy the Hare at morning for she is ignorant to the Hunter's waking thoughts."
RE: Need help with a mechanism design
RE: Need help with a mechanism design
RE: Need help with a mechanism design
RE: Need help with a mechanism design
A--->|
|
|
OB
\
\
C O---->D<----(Lid)
Image a triangle (bellcrank) made of BCD, with C being a pivot. There is a verticle member going up from B that pivots... there is a horizontal member from D attached to the Lid with a pivot.
If you apply a force (A) down on the lever connected to B, the bellcrank will rotate about C, making point D rock CCW. This motion would open/close your Lid. There are a zillion combinations of this system that are used in even more applications in almost everything. Playing with the ratios between BCD will give you different mechanical advantages and movements.
"Happy the Hare at morning for she is ignorant to the Hunter's waking thoughts."
RE: Need help with a mechanism design
I think this is what I am looking for. Thanks very much for your help.