Liquid material feeding container

摘要

In the liquid material feeding container, a piston is formed with a seal portion at a front portion thereof, being sliding in contact with an inner wall of a housing portion of a barrel body, and a cylindrical portion having projections in an outer periphery of a rear end portion and a female thread portion in an inner periphery thereof, and in an outer peripheral surface of the front portion extending frontward from the above-described operating portion of the above-described rotating element, a male thread portion is formed, and in the above-described barrel body, a space of the housing portion is formed in a frontward portion and a groove portion with which the projection is engaged is formed in a backward portion along an axial direction.

主权项

1. A liquid material feeding container which houses liquid content in a housing portion provided in a barrel body, and causes an operating portion of a rotating element exposed from a rear end portion of the barrel body to relatively rotate with the barrel body so as to advance a piston in the housing portion and feed the content to the frontward of the barrel body, wherein
the piston has a seal portion which slides in contact with an inner wall of the housing portion of the barrel body in a front portion thereof and is formed with a cylindrical portion having a female thread portion in an inner periphery thereof, a male thread portion which is mated with the female thread portion of the cylindrical portion is formed in an outer peripheral surface of a front portion extending frontward from the operating portion of the rotating element, wherein a projection portion which is elastically urged outward in a radial direction is formed, a plurality of projecting-recessing portions having rectangular shapes are formed in an inner peripheral portion of the barrel body, and in a state where the male thread portion of the rotating element is mated with the female thread portion in the cylindrical portion of the piston, the projection portion is engaged with the projecting-recessing portions, and when the rotating element is caused to relatively rotate with the barrel body, the projection portion is engaged and disengaged with and from the projecting-recessing portions, and when the rotating element is caused to inversely relatively rotate with the barrel body, the projection portion is pushed outwardly against the plurality of projecting-recessing portions to prevent further inverse rotation.