PROBLEM TO BE SOLVED: To provide a seeding machine that can be used by small-scale producers, gardening lovers and vegetable garden lovers with one hand, and thereby allows a small seed to be sown one by one.SOLUTION: A one-grain seeding machine is characterized as follows: an aperture of the lower end of a cylindrical nozzle is made smaller than a diameter of the handled seed to form a nozzle tip a mechanism for reciprocating the nozzle tip between the bottom of a seed container and the upper end of a discharge pipe with a lever operation is provided a pneumatic pump is configured such that a discharging force is generated when the nozzle tip is present in the upper end of the discharge pipe and a suction force is generated at the time other than that and a conduit of the pneumatic pump is connected to the nozzle. The one-grain seeding machine is also configured so as to suck only one seed by the suction force at the time when the nozzle tip is present at the bottom of the seed container, and to discharge the sucked seed with the discharging force and drop it on the hollow of the discharge pipe and discharge it outside from the lower end of the discharge pipe when the nozzle tip moves to the upper end of the discharge pipe. Determination is made whether or not the nozzle tip sucks the seed by whether or not the light pass through from the nozzle tip to the hollow of the nozzle, and an alarm is made when the seed is not sucked, and thereby the state where the one-grain is not sowed is prevented.COPYRIGHT: (C)2016,JPO&INPIT【課題】小規模な生産者、園芸愛好家、菜園愛好家が、片手で使え、小粒な種を一粒ずつ蒔ける種蒔き機の提供。【解決手段】筒状なノズルの下端の口径を扱う種の径よりも小さくしてノズル先端とし、レバー操作によりノズル先端を種容器の底と放出パイプの上端間を往復運動させる機構を備え、ノズル先端が放出パイプの上端にある時には排出力を発生させ、それ以外の時は吸引力を発生させるよう空気ポンプを構成し、その管路をノズルにつなぐ。ノズル先端が種容器の底にある時は、吸引力で種を一粒だけ吸着し、ノズル先端が放出パイプの上端まで移動すると、吸着していた種を排出力で放出して放出パイプの中空に落下させ、放出パイプの下端から外に出す一粒種蒔き機である。ノズル先端からノズルの中空に光が通過するか否かでノズル先端が種を吸着しているか否かを判断し、種を吸着していない場合は警報し、一粒も蒔かれないことを防止する。【選択図】図5
