System for preparing hot beverages in automatic vending machines

A system for preparing hot beverages in automatic vending machines, especially for preparing coffee, the system comprising an assembly body housing a distribution chamber where a dose of ground coffee is introduced by means of a feeding funnel and pressed by means of a pressing piston, wherein the assembly body comprises:

• two side walls arranged one at each side of the distribution chamber, each of the side walls comprising:
• a first side guide, implemented by means of a groove comprising a horizontal section and an inclined section,
• a second side guide,
• a driving rotating wheel, and
• a connecting rod provided with a first and a second end,
• said first end of the connecting rod being connected to the driving rotating wheel at a peripheral part of said driving rotating wheel, and
• said second end of the connecting rod, opposite to the first end of the connecting rod;
• and
• said distribution chamber, further comprising:
• a first transversal shaft which is guided by the first side guide of each side wall, and which passes through said first side guide in order to be connected to the second end of the connecting rod of each side wall,
• a second transversal shaft which is guided by the second side guide of each side wall, and
• a bottom filter which is housed inside the distribution chamber, said bottom filter being provided with a means for operating said bottom filter, further comprising:
• an axial shaft of the bottom filter,
• a spring surrounding the axial shaft of the bottom filter, and
• a screw fastening the bottom filter to the axial shaft of the bottom filter;
• said distribution chamber being movable within the assembly body by means of the first and second transversal shafts moving along respectively the first and second side guides:
• from a first vertical resting and product loading position in which the distribution chamber faces the feeding funnel, to a second inclined product preparation position in which the distribution chamber faces and houses the pressing piston in order to press the dose of coffee, this second position corresponding to the first transversal shaft placed in the inclined section of the first side guide of each side wall;
• said distribution chamber being moved from the first vertical resting and product loading position to the second inclined product preparation position and back to the first vertical resting and product loading position again, by means of the connecting rod of each side wall being actuated by the driving rotating wheel of each side wall.