Ender-5 Z-axis brake with spring (no deformation of the trapezoidal screw)

Between the pistons there is a small delicate spring (diameter ~ 7mm, length 20mm). The screw adjusts the spring pressure on the trapezoidal screw. The force works only in the Z axis. It does not deform it.
The element is screwed and adjusted with the bed raised.
We set the tension of the spring so that the firm pressure on the bed causes its movement (as in Ender3).