BREWING UNIT FOR A COFFEE MACHINE

摘要

A brewing unit for a coffee machine has a brewing cylinder on a second end of which an end plate is pivotal between a closed position and an open position. A piston is axially movable in the cylinder away from the first end of the cylinder past the fill opening to compact coffee introduced through a fill opening at the second end in a brewing position and from the brewing position toward the second end in the open position of the end plate into an eject position to eject the used ground coffee from the brewing chamber. A pair of gear wheels flank the cylinder at the second end. Respective coupling plates each having an inner end pivoted on a respective one of the wheels and an outer end pivoted on the end plate about an actuating axis. A drive synchronously rotates both wheels.