| 摘要 |
PURPOSE:To prevent sampled liquid from splashing to improve the dispensing accuracy at the time of sampling in an automatic chemical analyzer by providing a shock absorber on a driving system of a sampling nozzle. CONSTITUTION:A sampling nozzle 1 is provided on an end of an arm 2 which is attached to a splice 18 of a shaft which is vertically moved via a rack at the same time when it is rotatingly driven by a gear 17 which rotates via a stepping motor, wherein liquid sample and reaction reagent are dispensed into a plurality of reaction tubes. A boss 16 coupled with the jig 18 and the gear 17 slidably fitted to this are coupled by a shock absorbing mechanism formed of a plate spring 14 of the boss 16 and a non-resilient rubber 15 of the gear 17 wherein vibration of the sampling nozzle which moves and stops via the arm is suppressed. As a result, liquid sampled by the sampling nozzle of an automatic chemical analyzer can be prevented from splashing to have accuracy in dispensing improved. |
