JPH0513420Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Purpose of the invention) This invention relates to an aerosol injection container whose operating mechanism can be locked to prevent accidental injection while carrying or other undesired situations. The purpose is to provide a means for using the well-known aerosol injection container body, which is consumable and inexpensive, without changing the specifications, and in addition, it is possible to lock the operating mechanism.

Conventionally, a removable cap was attached to an aerosol injection container, and it was customary to cover the operating mechanism located outside the container body, such as a push button with an injection spout, to prevent the occurrence of protective injection. However, since the cap is particularly easy to lose for small injection containers, it has already been proposed to omit the cap and instead make the operating mechanism lockable. However, when attaching a locking mechanism to the container body, which is consumed in large quantities and is inexpensive, according to the conventional proposal, a part of the locking mechanism is provided in the mountain cap, so it is necessary to change the specifications of the well-known mountain cap. There are significant disadvantages. This invention avoids these disadvantages and realizes a low-cost means for preventing erroneous injection, similar to the above-mentioned attachment of the removable cap.This invention will be explained below with reference to the illustrated embodiment. do.

(Structure of the invention) In other words, 1 is a container body that stores the injection liquid under the pressure of the propellant, and the mountain cap 12 fixes the valve housing (not shown) of the injection valve, which opens by downward pressure of the valve stem 11. It is equipped with Reference numeral 2 denotes a push button with an injection port 21 mounted on a valve stem 11. The container body 1 and the push button 2 constitute an injection container, and such an injection container is of course well known.

By the way, according to this invention, the protective tube 3 having the exposed window 32 of the injection port 21 is connected to the mountain cap 1.
It is rotatably fitted onto the edge of the 2 and hard to come off.

A stopper piece 31 is formed protrudingly on the inner peripheral surface of the protective cylinder 3, while a first stopper piece 31 is formed on the push button 2.
A hem edge 23 is formed corresponding to the level of the top surface of the stopper piece 31 in the raised position shown in FIG. It's dripping. and,
The facing wall surface 25 including the level of the top surface of the stopper piece 31
is formed adjacent to the receiving groove 24. moreover,
The exposure window 32 described above is provided in front of the injection port 21 when the stopper piece 31 is located in the receiving groove 24.

Although this invention has been developed as described above, in each of the illustrated embodiments, the stopper pieces 31 and the receiving grooves 24 are each provided in pairs axially symmetrically. However, the number and position of these stopper pieces 31 and receiving grooves 24 are arbitrary as long as they correspond to each other. Also,
According to each of the illustrated embodiments, the mountain cap 12 is sandwiched from above and below between the hook 33 provided on the protection tube 3 and the stopper piece 31.
3 only, the protection tube 3 becomes the mountain cap 12.
If the stopper piece 31 is attached so that it is difficult to come off from the edge of the cover, the stopper piece 31 may be moved further upward.

Next, according to the first embodiment, the stopper piece 3
1 is formed on the side surface of a pin 26 that hangs downward from the hem edge 23 of the push button, and except for this pin 26 and the receiving groove 24, the stopper is not in the raised position of the push button. Since the hem edge 23 corresponding to the level of the top surface of the piece 31 is formed around the entire circumference, the protection tube 3 can be rotated approximately 180 degrees with respect to the push button 2. On the other hand, according to the second embodiment, the facing wall surface 25
is formed as the end surface of the hem wall 27 that hangs down below the hem edge 23 corresponding to the level of the top surface of the stopper piece 31, and this hem wall 27 is formed over approximately 1/4 of the entire circumference. , the rotatable range of the protection tube 3 is approximately 90 degrees. According to the second embodiment, a notch 34 for finger contact is provided in the protection tube 3 at a position axially symmetrical to the exposure window 32 described above.

Now, this invention is made as described above, and the receiving groove 24 of the stopper piece 31 formed on the inner peripheral surface of the rotatable protective cylinder 3 is bored in the hem edge 23 of the push button 2, while the stopper Since the facing wall surface 25 including the level of the top surface of the piece 31 is formed adjacent to the receiving groove 24, the protection cylinder 3 is rotated and the stopper piece 31
When the valve comes into contact with the facing wall surface 25 and stops, if the push button 2 is pressed, the stopper piece 31 is received in the receiving groove 24 along the facing wall surface 25, so the valve stem 11 is lowered together with the push button 2, and the injection is started. The valve opens. On the other hand, an exposure window 32 bored in the protection tube 3
is provided in front of the injection port 21 when the stopper piece 31 is located in the receiving groove 24, so when the injection valve is opened as described above, the injection liquid contained in the container body 1 is injected. It is released from the mouth 21 through the exposure window 32.

Next, when the pressure on the push button 2 is released, the push button 2 returns to the raised position as the injection valve closes, and at this time the stopper piece 31 escapes downward from the receiving groove 24, and the hem edge 23 of the push button returns to the level corresponding to the top surface of the stopper 31. Therefore, if the protection tube 3 is rotated in the opposite direction, the stopper piece 3
1 moves below and along the skirt edge 23, and the exposure window 32 moves from the position in front of the injection port 21, so that the injection port 21 is covered and protected by the cylinder wall of the protection cylinder 3. .

As described above, the hem edge 23 is at a position corresponding to the level of the top surface of the stopper piece 31, so when the push button 2 is pressed, the hem edge 23 immediately comes into contact with the stopper piece 31, and therefore, The push button 2 cannot be lowered, so even if an unexpected external force is applied to the push button 2, erroneous injection is prevented. At the same time, the injection port 21 is covered by the cylinder wall of the protection cylinder 3, so the injection port 21 is protected from external force.

(Effect of the invention) Thus, according to this invention, the push button 2 can be easily locked or unlocked by a light operation with the tip of a finger, and at the same time, the injection port 21 can be protected from external force in the locked state. Not only is it protected, but the protective tube is non-removable and there is no risk of loss. Not only that, when configuring such an injection container, the container body 1 can be used as it is without changing the specifications, and the push button 2 has a hem part. Even if it has a special shape, it can be mass-produced by plastic molding at the same production cost as ordinary conventional products.Similarly, the shape of the protective tube 3 is very special compared to the conventional removable protective cap. However, since the required amount of plastic material is small, the injection container according to this invention can be mass-produced at a lower cost than conventional products with a removable cap.
Therefore, it will significantly contribute to the spread of aerosol injection containers and the improvement in their usability.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional side view of the main part of the head of the first embodiment of this invention in a ready state for use, Fig. 2 is a cross-sectional view taken from Fig. 1, and Fig. 3 is the bottom of the container body shown in Fig. 1. 4 is a vertical sectional view of the main part in an unused state corresponding to Fig. 1, Fig. 5 is a front view of the push button in Figs. 1 and 4, and Fig. 6 is the same. A bottom view corresponding to FIG. 5, FIG. 7 is a vertical cross-sectional side view of the main part of the head in the state of preparation for use of the second embodiment, FIG. 8 is a cross-sectional view of FIG. A vertical cross-sectional view of the main part of the bottom of the container body shown in the figure.
10 is a vertical sectional front view of the main part of the protection tube in FIG. 7, FIG. 11 is a front view of the push button in FIG. 7, and FIG. 12 is a bottom view corresponding to FIG. 11. 1 is the container body, 11 is the valve stem, 12 is the mountain cap, 13 is the shaft hole, 14 is the liquid suction pipe,
2 is a push button, 21 is an injection port, 22 is an injection passage,
23 is a hem edge, 24 is a receiving groove, 25 is an opposite wall surface, 26 is a pin, 27 is a hem wall, 28 is a bottom surface, 3 is a protective tube, 3
1 is a stopper piece, 32 is an exposure window, 33 is a hook,
34 is a notch.

Claims (1)

[Scope of utility model registration request] The container body 1 is equipped with a mountain cap 12 that fixes the valve casing of an injection valve that opens by downward pressure from the valve stem 11, and contains the injection liquid under the pressure of the propellant, and the injection valve that is attached to the valve stem 11. In an injection container having a push button 2 with a spout 21, the protective tube 3 of the push button 2, which has an exposed window 32 of the nozzle opening 21, is rotatably fitted onto the edge of the mountain cap 12 in a manner that does not easily come off. 3 is
A stopper piece 31 is formed protrudingly on the inner circumferential surface, and the push button 2 has a stopper piece 31 in its raised position.
A hem edge 23 is formed corresponding to the level of the top surface of the stopper piece 31, and the receiving groove 24 of the stopper piece 31 is bored in the hem edge 23, and the facing wall surface including the level of the top surface of the stopper piece 31 is formed in the raised position of the push button 2. 25 to receiving groove 2
4, and the exposure window 32 is provided in front of the injection port 21 when the stopper piece 31 is located in the receiving groove 24.