JPH0353708Y2 - - 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 an illustrated embodiment. Reference numeral 11 denotes a valve stem of a container 1 that accommodates a propellant. It is constantly receiving upward thrust from the valve spring of the injection valve. This invention consists of a push button 2 fitted to the top end of the valve stem 11, a protective cap as described below, and a push cover 4.
It has become famous.

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 moves from the corner position corresponding to the front surface of the push button 2 (referred to as spray angle position A) to the corner where the beak end 23 almost engages with the inner cylinder 31 as shown in FIG. It has an angular movement range up to a position (referred to as 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.

Guide pieces 41, 41 are provided protruding from the circumferential surface of the press cover 4, and the press cover 4 is slidably supported on the top edge 33 of the inner cylinder 31 by these guide pieces 41, 41. It engages with the outer cylinder 32 so as to be unable to rotate relative to it. That is, according to the illustrated example, since the vertical folds 39 (one of which is visible in the drawing) protrudes from the upper part of the outer cylinder 32 with respect to one guide piece 41, the push-cover 4 cannot rotate relative to the outer cylinder 32.

As shown in FIGS. 1 and 2, the inner cylinder 31 of the protective cap described above has a long window hole 34 through which the nozzle 22 can be inserted. This long window hole 34 is bored from a position that can accommodate the nozzle 22 at the above-mentioned injection angle position A (see Fig. 4) to a position that can accommodate the nozzle 22 at the above-mentioned storage angle position B (see Fig. 4). . In addition, here, select "Nozzle 2"
2 means that the nozzle 22 does not touch the window edge. Further, this inner cylinder 31 is bored with receiving grooves 38, 38 for the guide pieces 41, 41 of the roof of the mouth (see FIG. 1), and the positions of the grooves are as follows. That is, as mentioned above, since the palate 4 and the outer cylinder 32 cannot rotate relative to each other, the guide pieces 41, 41 of the palate are connected to the outer cylinder 32.
Therefore, when the outer cylinder 32 is located at the above-mentioned injection angle position A as shown in FIG. (see Figure 1). In the illustrated example, this angular position is on the radial line a that extends to the injection angular position A, but these guide pieces 41, 41
Of course, it is also possible to provide them at other angular positions. Therefore, in this invention, the receiving grooves 38, 38
are provided at positions corresponding to such guide pieces 41, 41.

The outer cylinder 32 of the protective cap described above is connected to the operation port 3.
As can be seen from FIGS. 1 and 2, a small window hole 37 through which the nozzle 22 can be inserted is bored in the side wall. Outer cylinder 3
2 also has an angular movement range from the above-mentioned injection angle position A to an angular position (referred to as a closing angle position C) in which the small window hole 37 is engaged with the inner cylinder 31 beyond the above-mentioned storage angle position B. ing.

Finally, when the press cover 4 rotates from the stowed angle position B to the spray angle position A, the press cover 4 moves the nozzle 22 (see FIG. 4) at the stowed angle position B to It has a protruding rod 42 that can be engaged from the closed angle position C side.

In the illustrated example, 25, 25 are guide folds protruding from the push button 2, and are inserted into guide grooves 51, 51 of the brackets 5, 5 protruding inwardly from the inner cylinder 31, so that undesired The reason for this is that the valve stem 11 is normally made rotatable.

Since this invention is made as described above, as shown in FIGS. 1 and 2, the nozzle 2 of the push button
2 at the injection angle position A, the long window hole 34 of the inner cylinder 31
and the small window hole 37 of the outer cylinder 32, and the protrusion 42 of the palate 4 is engaged with the nozzle 22 from the above-mentioned storage angle position B side to assemble. palate 4
The inner cylinder 3 is connected by guide pieces 41, 41 protruding from the circumferential surface.
However, as described above, the palate 4 cannot rotate relative to the outer cylinder 32, and the palate 4 is supported by the angular position of the outer cylinder 32 at the injection angle position A described above. Since the receiving grooves 38, 38 of the guide pieces 41, 41 at the corner positions of the lid 4 are bored in the inner cylinder 31, the palate 4 can be lowered at the injection angle position A. Therefore, when the palate 4 is pressed manually through the operating port 35 formed in the top wall 36 of the outer cylinder 32, the valve stem 11 is lowered via the push button 2, and the ejected material from the container 1 is caused to flow through the injection passage 21. and is ejected from the 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.
As shown in the figure, since the long window hole 34 is drilled to a position that can accommodate the nozzle 22 at the storage angle position B, if the outer cylinder 31 is rotated toward the storage angle position B,
The nozzle 22 is pushed by the edge of the small window hole 37 and rotates,
As shown in Figure 4, the tip of its beak 23 finally reaches the long window hole 3.
4 reaches the accommodation angular position B where it can almost engage the end edge 23 of 4. Since the outer cylinder 32 has an angular movement range from the accommodation angle position B to the closing angle position C, if the rotation of the outer cylinder 32 is continued, the small window hole 37 will be moved by the inner cylinder 31 at the closing angle position C. While being closed, the long window hole 34 is engaged with the outer cylinder 32 and closed, and the protrusion 42 is separated from the nozzle 22.
On the other hand, the operation port 3 bored in the top wall 36 of the outer cylinder 32
5 is closed by the palate 4 supported on the top edge 33 of the inner cylinder 31, so that 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 (arrow in Fig. 4), and when the small window hole 37 reaches the beak end 23 of the nozzle located at the storage angle position B,
Since the protruding rod 42 engages and presses the nozzle 22,
The nozzle 22 is inserted into the protruding rod 4 while protruding from the small window hole 37.
2, and the injection angle position A as shown in FIG.
reach. At this point, the palate guide piece 4
1 and 41 are located at positions corresponding to the receiving grooves 38 and 38 of the inner cylinder 31, so that the injection can be performed again by pressing the palate 4.

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
A jet head is provided in which the aim of the jet is well defined, the pushbutton including the nozzle is completely housed inside the protective cap when not in use, and the nozzle and other internal mechanisms are thus prevented from entering the nozzle and other internal mechanisms. However, since the mechanical operating mechanism does not use a cam mechanism or link mechanism, the mechanism is simple and can be assembled from a small number of moldable parts, making it ideal for mass production.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an embodiment of this device at the injection position, Fig. 2 is a sectional view taken along line XX in Fig. 1,
FIG. 3 is a longitudinal side view in the storage position, and FIG. 4 is a sectional view taken along line XX in FIG. 3. 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 rod, 31 is an inner cylinder, 32 is an outer cylinder, 3
3 is the top edge, 34 is a long window hole, 35 is an operating port, 36 is a top wall, 37 is a small window hole, 38 is a receiving groove, 39 is a vertical fold, 4 is a palate, 41 is a guide piece, 42 is a protrusion , 5 is the bracket, 51 is the guide groove, A is the injection angle position, B
is the retracted angle position, and C is the closed angle position.

Claims (1)

[Scope of utility model registration request] Protection consisting 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 rotatably fitted to the outside of the inner cylinder 31. The top edge 3 of the inner cylinder 31 is connected to the cap and the guide pieces 41, 41 protruding from the circumferential surface.
The push button 2 has an injection passage 21 connected to the valve stem 11 and a front A nozzle 22 is provided with a base rotatably supported horizontally in the part,
The nozzle 22 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 approximately engages with the inner cylinder 31. 22, and has a long window hole 34 drilled 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, and the outer cylinder 32 at the injection angle position A. The guide piece 41 of the lid 4 at the corner position corresponding to the corner position of
41 receiving grooves 38, 38 are bored therein, and the outer cylinder 32 has a top wall 36 in which an operation port 35 is bored,
A small window hole 37 through which the nozzle 22 can be inserted is bored in the side wall, and angular movement from the injection angle position A to the closing angle position C, where the small window hole 37 engages with the inner cylinder 31, beyond the accommodation angle position B. The push lid 4 has a range of
A protective cap comprising a protrusion 42 that can engage the nozzle 22 in the stowed angular position B from the side of the closed position C when it rotates from the stowed angular position B in the direction of the injection angular position A. With jet head.