| 摘要 |
<p>The invention relates to a drive (1) for a coffee brewing device (2), comprising: a first gearwheel (10) comprising an internal thread (11), via which said first gearwheel (10) is pivot-mounted to an external thread (21) of a guide cylinder (20), so that the first gearwheel (10) can be moved along a cylinder axis (22) of the guide cylinder (20) in response to a rotation; a second gearwheel (30), which for the purpose of driving the first gearwheel (10) along the cylinder axis (22), engages with said first gearwheel (10); a housing (50), in which the first gearwheel (10) is accommodated; a brewing piston (40), which is coupled to the housing (50), so that said brewing piston (40) can be moved together with the first gearwheel (10) along the cylinder axis (22). The drive (1) comprises a linear guide (80) for guiding the housing (50), which runs at a distance parallel to the cylinder axis (22) and with which the housing (50) is engaged in such a manner that a movement of the housing (50) opposite to the linear guide (80) in a radial direction to the cylinder axis (22) is prevented, wherein an axis of rotation (32) of the second gearwheel (30) is arranged in a provided distance relative to the linear guide (80).</p> |
