JPH0352120Y2 - - Google Patents

Description

[Detailed description of the invention] (Purpose of the invention) This invention relates to a spray head with a protective cap for containers, such as aerosol injection containers and extrusion containers, that emit propellant by pressure against the propellant inside the container. In such a situation, the nozzle protruding outside the protective cap can be completely retracted after use.
Moreover, the purpose is to provide a simple structure.

(Structure of the device) This device will be explained below with reference to the illustrated embodiment. Reference numeral 11 is a valve stem of a container 1 that accommodates the propellant. It is constantly receiving upward thrust from the valve spring of the injection valve. This idea is
The valve stem 11 has a push button 2 fitted on the top end and a protective cap as described below.

The push button 2 has a nozzle 22 as well as an injection passage 21 connected to the valve stem 11.
The base of the nozzle 22 is pivotally supported at the front of the push button 2 so as to be horizontally rotatable. As shown in FIG. 2, this nozzle 22 has a beak end 23 that extends from the corner position corresponding to the front surface of the push button 2 (referred to as spray angle position A) to approximately the same position as shown in FIG. 4, FIG. 7, or FIG. 15. It has an angular movement range up to an angular position where it engages with the inner cylinder 31 (referred to as a storage angular position B).

The protective cap described above has an inner cylinder 31 and an outer cylinder 3.
The inner cylinder 31 has a hem fixed to the container 1, and the outer cylinder 32 is rotatably fitted onto the inner cylinder 31.

The inner cylinder 31 of the protective cap described above is particularly suitable for the second
4, 7 and 15, it has a long window hole 34 through which the nozzle 22 can be inserted.
This long window hole 34 is located at a position that can accommodate the nozzle 22 at the injection angle position A (see FIGS. 2 and 1).
3) to a position that can accommodate the nozzle 22 at the storage angle position B (see FIGS. 4, 7, and 15). Here, "compatible with the nozzle 22" means that the nozzle 22 does not touch the window edge.

The outer cylinder 32 of the protective cap described above has a top wall 35 that can be lowered by pressing the top surface, and can be elastically returned to its position by releasing the pressure.
As can be seen from FIG. 1, FIG. 2, FIG. 5, or FIG. 13, a small window hole 37 through which the nozzle 22 can be inserted
is punched into the side wall. The outer cylinder 32 further has an angular movement range from the above-mentioned injection angular position A to an angular position beyond the above-mentioned storage angular position B (referred to as a closing angular position C).

The push button 2 further has a top edge 25 which can substantially engage the lower edge of the push plate 36 in the raised position due to the return of the top wall 35 of the outer cylinder 32, as can be seen in FIGS. 1, 5 or 13. , the above-mentioned closure angle position C
A receiving groove 26 for receiving a push plate 36 of the outer cylinder is bored in the top edge 25.

Both the push button 2 and the inner cylinder 31 (see FIGS. 2 and 4) or either one (FIGS. 7 and 15 show the case of the push button 2) have the nozzle 22 in the storage angle position B. (See FIGS. 4, 7, and 14), it has protrusions 27 and 38 that can be engaged from the closed angle position C side.

In the illustrated example, 24, 24 are guide folds protruding from the push button 2, and are inserted into the guide grooves 51, 51 of the brackets 5, 5 protruding inwardly from the inner cylinder 31, and are inserted into the guide grooves 51, 51 of the brackets 5, 5 protruding inward from the inner cylinder 31. The reason for this is that the valve stem 11 is normally made rotatable. Further, according to the first example (see FIGS. 1 to 4), a small protrusion 33b is provided protrudingly on a part of the lower surface of the top wall 35 of the outer cylinder, and a notch 33a is formed on the top edge of the inner cylinder 31. It is bored so that the outer cylinder 32 can be lightly engaged with the inner cylinder 31.

The element body of the nozzle 22 shown in FIG. 5 (second example) is as shown in FIGS.
The stopper 28 is inserted into the hole. The element body of this nozzle 22 may also have a structure as shown in FIG. 9b. In this case, the punching hole is formed at the lower end, so the plug 29 is inserted therein.

According to the third example (see FIGS. 13 to 15), the top wall 35 and the peripheral wall of the outer cylinder 32 are molded separately for convenience of molding. Therefore, in this example, it is possible to select a material for the top wall 35 that is particularly more elastic than the peripheral wall. Also,
According to this third example, the main body of the nozzle 22 includes upper and lower pins 61, 61 molded separately from the main body.
Since the push button 2 is pivoted by the push button 2, it is easy to assemble the push button 2 to the main body, and the nozzle 22 is pivoted smoothly and with good precision.

This idea is as described above, so the first step is
2, 5, or 13, the nozzle 22 of the push button is inserted into the long window hole 34 of the inner cylinder 31 and the small window hole 37 of the outer cylinder 32 at the injection angle position A. Assemble.

At injection angle position A, the top wall 35 of the outer cylinder 32
Since the lower edge of the push plate 36 formed on the lower surface almost engages with the top edge 25 of the push button, the top wall 35
When you press the push button 2 with your finger, the push button 2 is pressed down via the push plate 36, and the ejected material from the container 1 is released into the ejection passage 2.
1 and is ejected from a nozzle 22.

During the above-described injection operation, the nozzle 22 is inserted into the small window hole 37 of the outer cylinder 32, and the nozzle 22 is moved from the injection angle position A to the storage angle position B where the beak end 23 can almost engage with the inner cylinder 31. As shown in FIG.
7 or 15, the long window hole 34 is bored to a position that can accommodate the nozzle 22 at the storage angle position B, so if the outer cylinder 31 is rotated toward the storage angle position B, The nozzle 22 is a small window hole 37
The beak end 23 is rotated by being pushed by the edge of the
Finally, as shown in Figure 7 or Figure 15, the long window hole 3
It reaches the retracted angle position B where it can almost engage the edge of 4. Since the outer cylinder 32 has an angular movement range that extends beyond the retracted angular position B to the closed angular position C, the outer cylinder 32
If the rotation continues, the small window hole 37 is closed by the inner tube 31 at the closing angle position C, while the long window hole 34 is engaged with the outer tube 32 and closed. Since the top edge 25 of the push button has a receiving groove 26 that can receive the push plate 36 when the outer cylinder 32 is in the closed angle position, the top wall 35 will not hang down due to the pressure of the top wall 35 of the outer cylinder or external force. However, the push plate 36 does not engage with the push button 2, so there is no risk of erroneous injection.
Further, the inside of the protective cap is almost sealed from the outside, and foreign matter is prevented from entering the inside.

To perform the injection operation again, the outer cylinder 32 is reversed to the above, and when the small window hole 37 reaches the beak end 23 of the nozzle located at the storage angle position B, the protruding rods 27, 38
(1st example) or the protruding rod 27 alone (2nd and 3rd examples) pushes out the nozzle 22 by its elasticity, so the nozzle 22 is guided to the window edge of the small window hole 37 and The injection angle position A as shown in FIGS. 2 and 5 is reached. At this injection angle position A, the lower edge of the push plate 36 is almost engaged with the top edge 25 of the push button, so as described above, the top wall of the outer cylinder 3
Injection can be performed again by finger pressure in Step 5.

Although the illustrated container 1 is an aerosol container that uses a liquefied gas propellant, this invention can of course be applied not only to aerosol containers but also to other suitable extruded containers, and has a wide range of uses. There is.

(Effect of the invention) That is, according to this invention, the nozzle protrudes outside from the protective cap during the injection operation, so
The aim of the injection is well defined, and not only is the pushbutton including the nozzle completely housed inside the protective cap when not in use, but also the top wall of the outer cylinder 32 is always sealed, so that the nozzle and other A jet head is provided that can almost completely prevent foreign matter such as dust from entering the internal mechanism, but its mechanical operation mechanism does not use a cam mechanism or link mechanism, so the mechanism is simple. It is ideal for mass production because it can be assembled with a small number of moldable parts.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of the first example of this device at the injection angle position, Fig. 2 is a sectional view taken along line XX in Fig. 1, Fig. 3 is a longitudinal sectional side view at the stowed angle position, and Fig. 4. is a sectional view taken along the line X-X in Fig. 3, Fig. 5 is a longitudinal sectional side view of the second example of this device at the injection angle position, Fig. 6 is a longitudinal sectional side view of the second example of this device at the stowed angle position, and Fig. 7 is a longitudinal sectional view of the second example of this device at the injection angle position. FIG. 8 is a plan view of the nozzle element of the second example, FIG. 9 a is a vertical sectional view, and FIG. 9 b is an element that can be substituted for the element of FIG. 10 is a bottom view of the nozzle element body of the second example, FIG. 11 is a plan view of the push button body of the second example, and FIG. 12 is a vertical sectional view, Fig. 13 is a longitudinal sectional side view of the third example of this device at the injection angle position, Fig. 14 is a longitudinal sectional side view at the retracted angle position, and Fig. 15 is the X of Fig. 14.
-X sectional view, FIG. 16 is a plan view of the push button body of the third example, FIG. 17 is a vertical side view, FIG. 18 is a plan view of the nozzle, FIG. 19 is a vertical side view, and FIG. is a plan view of the pin, FIG. 21 is a side view, and FIG. 22 is a longitudinal sectional view. 1 is a container, 11 is a valve stem, 2 is a push button, 21 is an injection passage, 22 is a nozzle, 23 is a beak end, 24 is a guide fold, 25 is a top edge, 26 is a receiving groove,
27 and 38 are projecting rods, 28 and 29 are plugs, 30 is a punching hole, 31 is an inner cylinder, 32 is an outer cylinder, 33a is a notch,
33b is a small projection, 34 is a long window hole, 35 is a top wall, 3
6 is a push plate, 37 is a small window hole, 5 is a bracket, 51
is a guide groove, 61 is a pin, A is an injection angle position, B is a storage angle position, and C is a closing angle position.

Claims (1)

[Scope of utility model registration request] It consists of a push button 2 fitted to the top end of a valve stem 11 of a container 1 that accommodates the propellant, an inner cylinder 31 whose hem is fixed to the container 1, and an outer cylinder 32 which is rotatably fitted onto the inner cylinder 31. It has a protective cap,
The push button 2 has an injection passage 21 connected to the valve stem 11 and is provided with a nozzle 22 whose base is pivoted horizontally rotatably at the front part.
2 has an angular movement range from an injection angle position A corresponding to the front surface of the push button 2 to a storage angle position B where the beak end 23 almost engages with the inner cylinder 31.
2, and has a long window hole 34 bored from a position that can accommodate the nozzle 22 at the injection angle position A to a position that can accommodate the nozzle 22 at the storage angle position B. The outer cylinder 32 has a top wall 35 with a push plate 36 projecting from the lower surface, and the outer cylinder 32 has a small window hole 37 through which the nozzle 22 can be inserted. The push button 2 is bored in the side wall and has an angular movement range from the injection angle position A to the closing angle position C exceeding the storage angle position B, and the push button 2 is pressed in the raised position by the return of the top wall 35 of the outer cylinder 31. A top edge 25 that can substantially engage with the lower edge of the plate 36 and a receiving groove 26 that receives the push plate 36 of the outer cylinder at the closed angle position C are bored in the top edge 25, and both of the push button 2 and the inner cylinder 31 or Either one is a protruding rod 2 that can elastically engage and press the nozzle 22 at the retracted angle position B from the side of the closed angle position C.
A jet head with a protective cap comprising: 7,38.