JP2521724Y2 - Aerosol injection device - Google Patents

Description

The present invention relates to an aerosol container for cosmetics and the like. More specifically, the present invention relates to an aerosol spraying device that closes a spray opening with a closing member to prevent the aerosol contents from flowing out and dripping when the spray button is released to stop spraying.

2. Description of the Related Art Conventionally, in this type of aerosol injection device, a closing member is slidably provided in an ejection passage communicating with an ejection port of an ejection button between a forward position for opening the ejection port and a retreat position for closing the ejection port. Along with providing, the spring is normally biased to the retracted position, and when used for injection, it is moved to the forward position to eject the aerosol contents from the injection port, and when injection is stopped, the injection port is closed again with the closing member The aerosol content remaining in the ejection passage is prevented from flowing out of the ejection port and dripping, and so-called "cut" is improved.

However, in the conventional aerosol injection device, the fluid pressure of the aerosol contents causes the closing member to move to the forward position against the spring urging force to open the ejection port. The pressure was weakened, the opening of the ejection port became uncertain and unstable, and the contents remained in the aerosol container.

Therefore, an object of the present invention is to push down the ejection button, always open the ejection port when the ejection is used, and to prevent the contents from remaining.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention relates to a method of mounting a spray button 5 on a stem 3 of an aerosol container 1 and, as shown in, for example, the following illustrated embodiment, 6
And a second portion such as the outer member 7, a lateral hole 11 communicating with the inside of the stem 3 is formed in the first portion, and a closing member is formed in the lateral hole 11. In the aerosol injection device which is provided movably at a retreat position for closing the ejection port 15 of the ejection button 5 and at a forward position for opening the ejection port 15 and biases the closing member 16 to the retreat position, Hole 11
A push member 13 is provided so as to be able to move freely, and the second portion of the spray button 5 is pressed at the time of pressing down to roll the push member 13, and is pushed via the push member 13 to attach the closing member 16. It is characterized in that a push portion 25 that moves to the advance position against the force is formed.

In operation, when the injection button 5 is depressed during use, the pressing portion
25, the push member 13 is rolled, and the push member 13 is pushed through the push member 13 to move the closing member 16 to the forward position against the urging force. It is pushed into the aerosol container 1 and the contents in the aerosol container 1 are discharged from the inside of the stem 3 through the lateral hole 11 through the jet port 15.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an aerosol injection device according to the present invention,
FIG. 2 shows a vertical sectional view when the injection is not used, and FIG. 2 shows a vertical sectional view when the injection is used. The reference numeral 1 in the drawing denotes an aerosol container. In the aerosol container 1, a liquid chamber is provided inside a container (not shown), and a cosmetic agent and a propellant are housed together in the liquid chamber.
The lid 2 of the aerosol container 1 is provided with an outlet of a liquid chamber, a jetting valve is provided therein, and an upper portion of the stem 3 is provided to protrude outside. The lower portion of the stem 3 is connected to the ejection valve, and the ejection valve, which is normally closed at the time of downward movement, is provided to be openable.

A spray button 5 is mounted on the stem 3 of the aerosol container 1. The injection button 5 is composed of an inner member 6 to be fitted to the stem 3 and an outer member 7 that can move up and down with respect to the inner member 6.

The inner member 6 is formed of a synthetic resin material, and a large-diameter cylindrical portion 8 and a small-diameter cylindrical portion 9 are provided concentrically at a lower portion. The stem 3 is fitted to a lower portion 10a of a vertical hole 10 of the small-diameter cylindrical portion 9. Attach and fix. In the upper part of the inner member 6, a lateral hole 11
And is provided in communication with the vertical hole 10 inside. A notch groove 12 is provided in the upper outer periphery of the inner member 6 in the axial direction, and a lower end 12 a of the notch groove 12 is provided by notching a hole edge at one end of the horizontal hole 11. A push member 13 is accommodated in the side hole 11 on the side of the notch groove 12 and is provided so as to roll freely. As the pressing member 13, a steel ball, a sphere made of synthetic resin, a circular plate, or the like is used. An ejection pipe 14 is connected to the side of the lateral hole 11 opposite to the side where the notch groove 12 is provided, and an ejection port 15 protruding from the outer periphery of the inner member 6 is provided.
The jet port 15 is provided with a hole diameter larger than the diameter of the internal horizontal hole 15a. A closing member 16 is inserted and provided between the lateral holes 11 and 15a. The closing member 16 has a shaft shape and is provided horizontally long, and piston portions 17 and 18 are provided at both ends with the horizontal holes 11.
Provided so as to be slidable on the peripheral surface of 15a, and slidably provided at a forward position where one piston portion 17 is located at the ejection port 15 and a retreat position where it is retracted from the ejection port 15 and located at the lateral hole 15a. .
One piston portion 17 is provided in a ring shape slightly larger than the diameter of the lateral hole 15a, and a gap 19 is formed on the outer periphery of the piston portion 17 due to a difference in diameter at the ejection port 15 at the advanced position.
The horizontal holes 11 and 15a are provided so as to be able to communicate with each other through the outside, and the horizontal holes 15a at the retracted position are provided so as to be able to shut off. One end of a coil spring 20 is pressed against the shoulder 18a of the other piston 18, and the closing member 16 is normally biased to the retracted position by the coil spring 20. At the retracted position, one end of the closing member 16 on the piston portion 18 side is provided in contact with the pressing member 13. The other end of the coil spring 20 presses against one end of the ejection pipe 14.

The outer member 7 is formed of a synthetic resin material into a circular cylindrical shape by hanging a cylindrical portion 23 downward from the outer periphery of the upper surface 22. The cylinder
A window hole 24 is provided in the outer periphery of 23. On the inner surface of the upper part of the cylindrical part 23,
A pushing portion 25 for pushing out the pushing member 13 is provided so as to protrude, and an inclined surface 25a whose projection amount decreases toward the lower end is provided below the pushing portion 25. Further, a small locking projection 26 is provided on the inner surface of the lower portion of the cylindrical portion 23.

Thus, the ejection button 5 accommodates the inner member 6 inside the outer member 7, fits the pushing portion 25 and the notch groove 12 to prevent rotation, and assembles the ejection tube 14 by projecting from the window hole 24. A coil spring is provided between the upper surface of the inner member 6 and the inner surface of the outer member 7.
28 are pressed against each other, and the inner member 6 is
The outer member 7 is provided so as to be able to be pushed up to a predetermined height and pushed down against a spring. The lower end of the large-diameter cylindrical portion 8 of the inner member 6 and the locking projection 26 of the outer member 7 are provided in engagement.

Then, the spray button 5 is attached to the aerosol container 1 by fitting the inner member 6 to the stem 3. As shown in FIG. 2, when the outer member 7 is pushed down against the coil spring 28, the inclined surface 25a of the pushing portion 25 comes into contact with the pushing member 13, and the pushing member 13 rolls and moves forward. Then, the closing member 16 is pushed out. The closing member 16 moves to the forward position, and the outside communicates with the lateral holes 15a and 11 via the gap 19. Then, when the outer member 7 is pushed down, the inner member 6 and the stem 3 move down to open the ejection valve of the aerosol container 1, so that the aerosol content rises in the stem 3, and the lateral holes 11, 15a and the gap 19 are formed. It spouts from the spout 15 through it. When the pressing force of the injection button 5 is released and the injection is stopped, the aerosol injection device returns to the original state by following the reverse of the above order, the closing member 16 returns to the retracted position, and the piston portion 17 The horizontal hole 15a is shut off, and the passage to the jet port 15 is shut off. As a result, the aerosol contents remaining in the passage from the ejection valve to the ejection port 15 are removed from the ejection port 15.
To prevent it from flowing out and dripping.

3 and 4 are longitudinal sectional views of another embodiment of the aerosol injection device according to the present invention when injection is not used. In FIG. 3, the outer member 7 is fitted and fixed to the lid 2 of the aerosol container 1. Further, the inner member 6 is integrally formed including the ejection pipe 14, and a finger contact portion is formed on the upper surface.
30 is provided so that it can be directly pushed down. In addition, the push section
The reference numeral 25 is provided on the inner surface of the outer member 7 so as to come into contact with the pushing member 13 when the inner member 6 is pushed down, so that the pushing member 13 can be pushed out.

In FIG. 4, the injection button 5 has an inner member 6 inside an outer member 7.
Are connected by a connecting portion 32 to form an integral structure, and the inner member 6 is provided so as to be able to be pushed down with the connecting portion 32 as a fulcrum. Further, the pressing portion 25 is provided on the inner surface of the outer member 7 as in FIG.

From the above, according to the present invention, according to the present invention, when the spray button is pressed down during use, the closing member is moved via the rolling member that moves in the rolling direction, so that the spray button moves in the horizontal direction from the vertically moving spray button. As a result, the force of the force applied to the closing member can be reliably and smoothly transmitted, and the closing member can be moved lightly even with the passage of time. Further, when the use of the jetting is stopped, the jetting port is closed, so that the aerosol content is prevented from flowing out and dripping from the jetting port, and so-called "cut" can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of the injection device of the present invention when the injection is not used, FIG. 2 is a vertical sectional view of the injection device when the injection is used, and FIGS. 3 and 4 show another embodiment of the present invention. It is a longitudinal section at the time of non-use. 1 aerosol container 5 spray button 15 spray port 16 closing member 25 push section

Claims (1)

(57) [Scope of request for utility model registration] An injection button is attached to a stem of an aerosol container, and the injection button is provided with a first portion and a second portion, and the first portion has a lateral hole communicating with the inside of the stem. In the aerosol injection device, a closing member in the lateral hole is movably provided to a retreat position for closing the ejection port of the ejection button and a forward position for opening the ejection port, and biases the closing member to the retreat position. A push member is provided movably in the lateral hole, and the second portion of the spray button is pressed at the time of its depression to roll the push member, and is pushed through the push member to push the closing member to an urging force. An aerosol injection device comprising a push portion which moves against the advance position.