JPH0418683Y2 - - Google Patents

Description

[Detailed explanation of the idea] "Industrial application field" This case concerns an aerosol foam container.

"Prior Art" A head with a nozzle is fitted onto the upper end of a stem that penetrates the top wall of the container body and projects upwardly, and when the head is pressed down, the liquid inside the container is ejected from the nozzle through the stem. An aerosol-type foam ejecting container provided in this manner is known.

``Problems to be solved by the invention'' In the conventional foam jetting container mentioned above, the foam does not cut easily after the foam is jetted by pressing down on the head, and the foam slowly flows out from the tip of the nozzle for a while. It was something to continue. Therefore, even after the bubbles are ejected, the remaining bubbles adhere to the nozzle opening, making them unsightly and difficult to remove.

The present invention is designed to eliminate these drawbacks.

"Means for solving the problem" A head 4 with a nozzle 5 is fitted onto the upper end of the stem 2 which penetrates the top wall of the container body 1 and protrudes upwardly, and when the head is pressed down, the liquid inside the container is discharged. In an aerosol type foam ejection container provided to eject foam from the nozzle 5 via the stem,
A cylindrical piston 3 is fitted to the upper end of the stem, and a cylinder 6 that communicates with the nozzle hole is suspended from the head 4, and the cylindrical piston 3 is inserted into the lower part of the cylinder so that it can freely move up and down and The head was pressed upward against the piston and fitted into the piston.

"Operation" When the head 4 is pushed down from the state shown in Fig. 1, the spring 7 is compressed and the stem 2 is pushed down via the cylindrical piston 3.Then, the discharge valve provided inside the container opens and the inside of the container is opened. Liquid is ejected in the form of foam through the stem 2, cylindrical piston 3, cylinder 6, and nozzle 5. When the head is released, the stem and cylindrical piston first rise relative to the container body to close the discharge valve inside the container, and then the head 4 rises relative to the cylindrical piston 3, as shown in FIG. As a result, a space is formed in the upper part of the cylinder and a negative pressure is created, so the bubbles in the nozzle hole 5a are sucked back into the space 10, and in this way, the bubbles from the nozzle port after the discharge valve is closed are sucked back into the space 10. This prevents bubbles from blowing out.

Embodiment 1 is a metal container body, and 2 is a stem that penetrates the top wall of the container body and projects upwardly. When the stem is pushed down, a discharge valve below the stem opens and the liquid inside the container is spouted out in the form of bubbles, and this structure is known.

A cylindrical piston 3 is fitted into the upper end of the stem.

Reference numeral 4 denotes a head having a nozzle 5, and a cylinder 6 that communicates with the base end of the nozzle hole 5a hangs down from the lower surface of the head, and the cylindrical piston 3 is fitted into the lower part of the cylinder so as to be able to move up and down. A compression coil spring 7 is interposed between the cylindrical piston 3 and the inner upper wall surface of the cylinder.

An outer cylinder 8 hangs down from the head 4 with a gap between it and the cylinder, and the cylindrical piston 3
In order to prevent the head 4 from being pulled out, a bottom plug 9 that closes the lower surface of the outer periphery of the cylindrical piston and the lower surfaces of the cylinder 6 and the outer tube 8 is fitted into the outer tube. A space 10 is formed between the upper surface of the cylindrical piston and the upper inner wall surface of the cylinder by pushing up the head with a coil spring 7.

Reference numeral 11 denotes a cap-like member, which has the head exposed on the upper wall surface, surrounds the head, and fits the lower end of the peripheral wall into the upper end of the container body 1.

``Effect of the invention'' Since the present invention has a structure that has the above-mentioned effect, bubbles can be easily removed by sucking the bubbles back into the space at the upper part of the cylinder, and even after the discharge valve is closed, unlike the conventional method, the bubbles can be easily removed from the discharge passage. Any remaining foam will not be discharged from the nozzle.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the container according to the invention, and FIG. 2 is a plan view thereof. 1... Container body, 2... Stem, 3... Cylindrical piston, 6... Cylinder.

Claims (1)

[Scope of utility model registration request] A head 4 with a nozzle 5 is fitted onto the upper end of the stem 2 which penetrates the top wall of the container body 1 and protrudes upwardly, and when the head is pressed down, the liquid inside the container flows from the nozzle 5 through the stem into bubbles. In an aerosol-type foam-jetting container that is designed to emit foam,
A cylindrical piston 3 is fitted to the upper end of the stem, and a cylinder 6 that communicates with the nozzle hole is suspended from the head 4, and the cylindrical piston 3 is inserted into the lower part of the cylinder so that it can freely move up and down and An aerosol foam ejecting container characterized in that the head is forced upwardly and fitted into the piston.