JPH0441946Y2 - - Google Patents

Description

[Detailed explanation of the idea] "Industrial application field" This case relates to 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 Problems" An aerosol foam jetting container body 1 having a stem 2 that penetrates the top wall of the container body and is biased upwardly, and a first cylindrical portion 4 that is fitted onto the stem. An auxiliary member 3 having an inversely tapered elastic shoulder wall 5 protruding diagonally upward outward and having a first circumferential wall 6 hanging from the outer peripheral edge of the shoulder wall; The third surrounding wall 10 hanging down from the top wall 9 is fitted onto the outer surface of the first surrounding wall 6, and a downward stepped portion 11 provided on the inner surface of the third surrounding wall 10 is fitted onto the outer surface of the first surrounding wall 6. while engaging the outer periphery of the upper end surface of the third
A press-down head 7 that protrudes forward a nozzle 14 that penetrates the peripheral wall 10 and opens a small through hole 16 into the second peripheral wall 8 through an inward flange 15, and a press-down head 7 that extends forward into the nozzle in the front-rear direction. It consists of a valve body 19 that is loosely fitted so that it can slide freely and be biased rearward,
The valve body is inserted through the small through hole so that the rear end of the valve body 19 engages with the upper surface of the first cylindrical portion 4, and the front end surface of the nozzle is formed by the outer surface of the large diameter portion 20 formed by the front end of the valve body. By closing the valve in a watertight manner to form the second discharge valve 21 and pushing down the head 7 with respect to the container body, the first cylindrical portion 4 pushes the rear end of the valve body forward to form the second discharge valve. The sliding surface 22 that opens the first
It is formed on the engagement surface between the upper end of the cylindrical portion and the rear end of the valve body.

"Operation" When the head 7 is pushed downward against the container body 1 from the state shown in FIG. 1, the elastic shoulder wall 5 is pushed down against its elasticity, and the auxiliary member 3
The first cylindrical portion 4 of FIG. The second discharge valve 21 opens. When the head 7 is further pushed down from the state shown in FIG. , the first cylindrical portion 4, the nozzle 14, and the second discharge valve 21.

When the head 7 is released after ejection, the stem 2 and the auxiliary member 3 rise to close the first discharge valve, and then
The head 7 is further pushed up with respect to the auxiliary member 3 due to the restoration of the elastic shoulder wall 5, and then the valve body 19 moves rearward due to the restoration of the rubber tube 24 that urges the valve body 19 rearward, and the second The discharge valve 21 is closed.

Embodiment 1 is a metal container body, and 2 is a stem that penetrates the top wall of the container body and is biased upward. The stem is provided so that when the stem is pressed down against the container body, a first discharge valve below the stem opens, and the liquid in the container body turns into bubbles and is ejected through the stem, and this structure is of a known type. be.

The first cylindrical portion 4 of the auxiliary member 3 is fitted onto the stem. The auxiliary member has a reversely tapered elastic shoulder wall 5 projecting obliquely upward and outward from the intermediate portion of the first cylindrical portion, and a first circumferential wall 6 hanging down from the outer peripheral edge of the elastic shoulder wall.

A second circumferential wall 8 of a push-down head 7 is fitted onto the outer surface of the first cylindrical portion 4 . Its push-down head 7
The second peripheral wall 8 is vertically provided from the top wall 9, and the third peripheral wall 8 is fitted onto the outer surface of the first peripheral wall 6 from the top wall.
A peripheral wall 10 is provided vertically, and a downward step 11 on the inner surface of the third peripheral wall is engaged with the upper end surface of the first peripheral wall 6. In the illustrated example, a fourth peripheral wall 12 is further suspended from the outer periphery of the top wall 9, and the lower part of the peripheral wall is fitted into the inner surface of a short cylindrical portion 13 rising from the outer periphery of the shoulder of the container body in a vertically movable manner. A nozzle 14 is further attached to the head 7. The nozzle 14 is the fourth
It penetrates the peripheral wall 12 and the third peripheral wall 10 and communicates with the inside of the second peripheral wall 8 through a small through hole 16 via an inward flange 15. 4 Nozzle outer cylinder part 1 formed integrally with the peripheral wall
7, and a nozzle inner cylinder part 18 whose rear part is fitted into the outer cylinder part and whose front part protrudes forward. The front end surface of the nozzle is a tapered surface that expands forward.

The valve body 19 is loosely inserted into the nozzle with the front end face of the nozzle watertightly closed by the large diameter portion 20 formed by the front end of the valve body. The rear part of the valve body is inserted into the small through hole 16 and its rear end surface is engaged with the upper surface of the first cylindrical part 4, and one or both of these engaging surfaces are shown in FIG. As shown, a sliding surface 22 is provided for moving the valve body 19 forward and opening the second discharge valve 21 formed by the front end surface of the nozzle and the large diameter portion of the valve body when the head 7 is pressed down with respect to the container body. I'll keep it. In the illustrated example, a long hole 23 is provided on the axis from the rear end surface of the valve body to the middle part of the valve body, and the front end thereof is opened to the side surface of the valve body, but instead of the long hole, a groove may be provided on the outer surface of the valve body. can also be considered. In order to bias the valve body, in the illustrated example, a rubber tube 24 is fitted onto the inner surface of the nozzle inner cylinder portion 18, and an outward flange 25 biased at the rear of the valve body is engaged with the rear end surface of the rubber tube. , the rubber cylinder can be replaced with a coil spring.

``Effects of the invention'' As mentioned above, this invention has the second discharge valve 21 at the front end of the nozzle, which facilitates the removal of bubbles, and the second discharge valve is opened before the first discharge valve below the stem opens. At the same time, since the nozzle is closed after the first discharge valve is closed, there is no possibility that the pressure inside the nozzle will become high due to bubbles and leak from the second discharge valve.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the main part of the container according to the present invention, and FIG. 2 is a longitudinal sectional view of the main part of the container showing a state in which the second discharge valve is open. 1... Container body, 3... Auxiliary member, 7... Head, 19... Valve body.

Claims (1)

[Scope of utility model registration request] An aerosol foam ejecting container main body 1 has a stem 2 which penetrates the top wall of the container main body and is biased upwardly, and a first cylindrical portion 4 that is fitted onto the stem has an elastic shape that is inversely tapered diagonally upward and outward. an auxiliary member 3 that protrudes from the shoulder wall 5 and has a first peripheral wall 6 hanging down from the outer peripheral edge of the shoulder wall; a second peripheral wall 8 hanging down from the top wall 9 on the outer surface of the first cylindrical portion 4; A third circumferential wall 10 hanging down from the top wall 9 is fitted onto the outer surface of the first circumferential wall 6, and a downward step 11 provided on the inner surface of the third circumferential wall 10 is engaged with the outer circumference of the upper end surface of the first circumferential wall 6. 3rd above
A push-down head 7 that projects forward a nozzle 14 that penetrates the peripheral wall 10 and opens a small through hole 16 into the second peripheral wall 8 through an inward flange 15, and a push-down head 7 that extends forward into the nozzle in the front-rear direction. It consists of a valve body 19 that is loosely fitted so that it can slide freely and is biased rearward, and the valve body is inserted through the small through hole and the rear end of the valve body 19 is inserted into the first cylindrical portion 4. Engaging with the upper surface and watertightly closing the nozzle front end surface with the outer surface of the large diameter portion 20 formed by the front end of the valve body to form a second discharge valve 21, and pressing down the head 7 with respect to the container body. The first cylindrical portion 4 presses the rear end of the valve body forward to open the second discharge valve.
An aerosol type foam ejecting container characterized in that a foam is formed on the engagement surface between the upper end of the cylindrical portion and the rear end of the valve body.