SUPPORT FOR CONSTANT FORCE Russian patent published in 2023 - IPC F16L3/21 

FIELD: technology of support devices for movable elements with constant force.

SUBSTANCE: constant force support includes body 1, spring 2 with spring guide 3 fixed in body 1 of the constant force support. Rockers 4 with a curved profile are positioned in a mirrored fashion in body 1. In the lower part of the cup there are two through symmetrical holes around its axis, perpendicular to the plane passing through the axis of cup 5 and the axis of guide spring 3, with pins 12 installed in them. Pins 12 connect cup 5 with one end of each H-shaped lever 13 through coaxial holes in parallel branches 14 of lever 13. The second end of H-shaped lever 13 with coaxial holes in branches 15 of lever 13 is located on pivot shafts 10 of plates 8 and 9. The rollers of one plate are placed on the pivot shafts on the outer side of the branches of H-shaped lever 13, rollers 11 are fixed on pivot shafts 10 with end washers 16. Each roller 11 is in contact with the corresponding curved surface of rocker 4. At the left end of guide spring 3, grooves 18 are made, in which cruciform limiter 19 limiting movements of left plate 9 is located, the position of which is adjusted by bolt 20. At the right end of guide spring 3, grooves 22 are made, in which a cruciform tensioner 23 for moving left plate 9 is located, the position of which is regulated by bolt 24. Cup 5 is placed in guide sleeve 27, fixed in the upper part of body 1, and in cup 5 and guide sleeve 27, a diametrical hole is made with pin 28 placed in it.
EFFECT: support device is proposed.

1 cl