Combination drive for a sampling system for collecting a liquid sample

摘要

A sampling system for collecting a liquid sample, having at least one analytic auxiliary means is proposed. The sampling system has a coupling element for coupling onto the analytic auxiliary means and at least one drive unit for driving a movement of the coupling element from a rest position into a deflected position. The drive unit comprises an energy transducer which is designed to generate a rotational movement with different rotational directions. The drive unit furthermore has a coupling device with at least one rotational-direction sensitive element, wherein the coupling device is designed to couple the energy transducer to a first system function in a first rotational direction, and to couple said transducer to a second system function which differs from the first system function in a second rotational direction which differs from the first rotational direction.

主权项

1. A sampling system for collecting a liquid sample, comprising:
an analytic auxiliary means; a coupling element for coupling to the analytic auxiliary means; and a drive unit for driving a movement of the coupling element from a rest position into a deflected position, the drive unit comprising:
an energy transducer which rotates a first drive wheel in first and second rotational directions; anda coupling device comprising a rotational-direction sensitive element for coupling to the first drive wheel and for transferring mechanical energy from the energy transducer to different subsystems; wherein, the coupling device couples the first drive wheel to a first subsystem in the first rotational direction and couples the first drive wheel to a second subsystem in the second rotational direction; and wherein the coupling device comprises a first drive element coupled to the first subsystem and/or the second subsystem, the first drive wheel and the first drive element being interconnected by the rotational-direction sensitive element, the rotational-direction sensitive element coupling the first drive wheel to the first drive element in the first rotational direction and decoupling the first drive wheel from the first drive element in the second rotational direction.