JPH01128561U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of essential parts showing one embodiment of this invention, Fig. 2 is an exploded sectional view of a valve mechanism assembly used in the same embodiment, and Figs. 3 and 4 are used in the same embodiment. A plan view and a bottom view of the valve body holding plate, FIG. 5 is a cross-sectional view showing the operating state at positive pressure in the same embodiment, and FIG. 6 is a cross-sectional view showing the operating state at negative pressure in the same embodiment, FIG. 7 is a sectional view showing a conventional example. 11... Cap, 12... Cap body, 1
2a...Fluid channel, 12b...Annular protrusion, 13...
...Valve body, 14...Valve body holding plate, 15...Valve body support plate, 16...First coil spring, 17...Second coil spring, 31...Cylindrical portion, 31a...Convex strip, 32
...Inner arm part, 32a... Root part, 33
...Inner circumference lip part, 34...Outer arm part, 34
a... Root portion, 35... Outer lip portion, 41
a... Seal portion, 41b... Inner protrusion, 42a...
...Outer projection, 44...Annular groove, 45...Fluid channel hole.

Claims (1)

[Claims for Utility Model Registration] A cap with a valve comprising the following (a) to (f). (a) a cap body that is attached to the container opening and includes a fluid flow path and an annular protrusion that projects inwardly from the inner periphery of the fluid flow path; a cylindrical portion having a protruding strip; an inner arm portion extending radially inward in a flange shape from near the vertical middle of the cylindrical portion and having a thinner wall than the cylindrical portion; and a flange shape extending radially outward from a lower portion of the cylindrical portion. an outer arm portion that extends from the outer arm portion and has a thinner wall than the cylindrical portion, and further includes an inner circumferential lip portion that projects upwardly at the inner circumferential edge of the inner arm portion, and an outer circumferential lip portion that protrudes downwardly from the outer circumferential edge of the outer arm portion. , a rubber-like material disposed within the cap body fluid flow path, with the inner circumferential lip portion being located inside the cap body annular protrusion and the outer circumferential lip portion being in contact with the upper surface of the cap body annular protrusion. an annular valve body made of an elastic material; (c) an annular groove into which the upper part of the cylindrical portion is fitted to hold the valve body; a seal portion corresponding to the inner peripheral lip; and the inner and outer arms. The inner side and the inner side that come into contact with the root part of the cylindrical part respectively in the part.
a valve body retaining plate having an outer protrusion on its lower surface, further comprising a fluid passage hole penetrating the upper and lower surfaces between the seal portion and the annular groove, and disposed within the fluid passage of the cap body; (d) a first spring means disposed in the fluid flow path of the cap body above the valve body retaining plate and urging the valve body retaining plate downward; (e) a first spring means disposed around the valve body near the lower surface of the lip; (f) a valve body support plate having an annular supporting protrusion on its upper surface and disposed within the cap body fluid flow path below the valve body; (f) the cap body fluid flow path below the valve body support plate; second spring means disposed within the valve body for biasing the valve body support plate upwardly;