JP5207879B2 - Ejection head and aerosol ejection device - Google Patents

Description

  The present invention relates to an ejection head that is attached to an aerosol container and ejects the contents thereof, and an aerosol ejection apparatus.

A general aerosol container filled with a fragrance, a deodorant and the like is provided with a valve stem on the upper surface, and the contents are jetted by pressing the valve stem. In general, such an aerosol container is provided with, for example, an ejection head disclosed in Patent Document 1 in order to facilitate the pressing of the valve stem. That is, an aerosol injection apparatus in which an injection head is attached to an aerosol container is widely used. In this apparatus, when a button provided on the ejection head is pressed, the valve stem is pressed, and the contents are ejected from the ejection head.
JP 2002-308360 A

  By the way, in the above ejecting head, an opening is formed on the upper surface of the ejecting head, and a button is fitted into this opening. At this time, in order to make the operation of the button smooth, a gap is formed between the opening and the button, not in close contact. Since moisture may enter the gap, water may accumulate in the ejection head. In particular, when the aerosol spray device is placed in a room with high humidity, water tends to accumulate. If the aerosol is jetted in this state, when the jet head is tilted toward the object, water may flow out from the gap around the button, and the object and its surroundings may be unnecessarily wetted.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an ejection head and an aerosol ejection apparatus that can prevent water from accumulating inside.

  The present invention is an ejection head that is attached to an aerosol container and ejects the contents thereof, and has a ring-shaped peripheral edge that is in close contact with the outer peripheral surface of the upper part of the aerosol container, and a head body that covers the upper part of the aerosol container; A button attached to the head body and capable of pressing the valve stem on the top of the aerosol container, and a gap communicating with the internal space of the head body is formed between the head body and the button, Between the peripheral portion and the outer peripheral surface of the upper part of the aerosol container, at least one communication passage is formed which communicates the internal space of the head main body with the outside and opens at the lower end portion of the peripheral portion.

  According to this configuration, at least one communication path that communicates the inside and the outside of the head body is formed between the peripheral edge of the head body and the outer peripheral surface of the upper portion of the aerosol container. Therefore, even if moisture enters from the gap between the head main body and the button, the water in the internal space of the head main body is discharged to the outside through the communication path directed downward. Therefore, it is possible to prevent water from flowing out from the gap between the head main bodies during use as in the conventional example, and the water that has entered the head main body can be sequentially discharged.

  Various modes are possible for the communication path of the ejection head. For example, at the peripheral edge of the head body, at least one protrusion can be formed on the inner wall surface facing the upper peripheral edge of the aerosol container. When this protrusion comes into contact with the outer peripheral surface of the upper part of the aerosol container, a gap is formed on both sides sandwiching the protrusion. The gap serves as a communication path to discharge moisture. In particular, when the head main body is formed of an elastically deformable plastic or the like, the peripheral portion is pulled in the circumferential direction by providing the projecting portion, so that the peripheral portion further adheres to the aerosol container. Therefore, the peripheral edge portion is firmly fixed to the aerosol container at a place other than the portion where the communication path is provided, and the ejection head can be prevented from easily falling off from the aerosol container.

  Alternatively, the communication path can be configured as follows. That is, at least one groove is formed on the inner wall surface facing the outer peripheral surface of the upper part of the aerosol container at the peripheral edge. Water can be discharged using this groove as a communication path.

  There are various types of aerosol containers, for example, there are those in which an annular recess is formed in the upper peripheral edge. For such an aerosol container, the head body can be configured as follows. First, a convex portion that fits into the annular concave portion is formed on the peripheral edge portion of the head main body. At this time, a convex portion is not formed at a position corresponding to the communication path. According to this structure, since the annular recessed part of an aerosol container and the convex part of a head main body fit, both can be fixed firmly. At this time, since a convex part is not formed in the position where a communicating path is formed, it can prevent that discharge of water is prevented by a convex part. As an example of such a form, for example, there is a method in which a plurality of convex portions are formed in the circumferential direction at a predetermined interval, and a communication path is formed between the convex portions.

  An aerosol injection apparatus according to the present invention is made to solve the above-described problem, and includes an aerosol container and any one of the above-described injection heads. According to this configuration, as described above, water can be prevented from flowing out from the ejection head during use, and water that has entered the head main body can be sequentially discharged.

  According to the ejection head and the aerosol ejection apparatus according to the present invention, water can be prevented from accumulating inside.

  Hereinafter, an embodiment of an aerosol injection device according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an aerosol injection device according to the present embodiment, and FIG. 2 is an upper perspective view and a side view of an aerosol container. Various aerosols such as fragrances, deodorants, cleaning agents, and insecticides can be applied.

  As shown in FIG. 1, the aerosol injection apparatus includes an aerosol container 1 and an injection head 2 that is attached to the upper surface of the aerosol container 1 and injects aerosol. As shown in FIG. 2, the aerosol container 1 has a cylindrical container body 11 and a tubular valve stem 12 attached to the upper surface thereof. The container body 11 is made of metal or the like and is filled with aerosol. Moreover, the container main body 11 has a dome-shaped upper surface, and a valve stem 12 is attached to the top. The valve stem 12 is biased upward by a spring (not shown), and when the valve stem 12 is pressed against the spring, the aerosol, which is the contents, is injected. An annular recess 111 is formed on the periphery of the upper portion of the container body, and a projection of the ejection head 2 described later can be fitted into the annular recess 111.

  Next, the ejection head will be described with reference to FIG. FIG. 3 is a perspective view (a) of the ejection head and a cross-sectional view (b) taken along the line AA. The ejection head 2 is attached to the upper surface of the aerosol container 1 in order to facilitate the pressing of the valve stem 12, and is formed of a resin such as plastic. As shown in FIG. 3, the ejection head 2 includes a head body 21 formed in a cylindrical shape and a button 22 attached to the upper surface thereof. The head main body 21 has an open lower end, and the inner wall surface of the opening is in close contact with the upper outer peripheral surface of the aerosol container 1. On the other hand, a recess 211 (211a, 211b) is formed in the upper portion of the head body 21 over the entire length in the radial direction, and an opening 212 is formed in the center of the recess 211. The above-described button 22 is fitted into the opening 212 and is supported by the head body 21 so as to be movable up and down.

  An insertion port into which the valve stem 12 is inserted is formed at the lower part of the button 22, and a flow path 221 is formed through which aerosol passes upward from the insertion port. The flow path 221 extends upward from the insertion port, then bends in the horizontal direction, and extends to the nozzle 222 attached to the side surface of the button 22. Therefore, the aerosol that has flowed out of the valve stem 12 is jetted from the nozzle 222 via the flow path 221. As shown in FIG. 3 (b), in the head main body 21, of the pair of dents at the position where the button 22 is sandwiched, the dent 211a on the side facing the nozzle 222 is a passage for the injected aerosol. . The other recess 211b functions as a notch for facilitating pressing the button 22 with a finger.

  Next, fixing of the ejection head and the aerosol container will be described with reference to FIGS. 4 is a perspective view of the ejection head as viewed from below, and FIG. 5 is a cross-sectional view taken along line BB in FIG. As shown in FIG. 3B, the inner diameter of the lower opening of the head body 21 is substantially the same as the outer diameter of the upper part of the aerosol container 1, so that the opening peripheral part 213 is liquid-tight with the outer peripheral surface of the upper part of the aerosol container 1. Close contact with. However, as will be described later, a drainage communication passage is formed in a part of the contact area. As shown in FIG. 4, a plurality of convex portions 214 extending in the circumferential direction are formed on the inner wall surface of the lower opening of the head main body. These convex portions 214 are arranged along the circumferential direction at a predetermined interval, and are fitted into the annular concave portion 111 formed in the upper portion of the aerosol container 1 described above (see FIG. 3B). In this way, the projection 214 and the annular recess 111 are fitted together, thereby preventing the ejection head 2 from being detached from the aerosol container 1. In addition, a protrusion 215 extending in the axial direction is formed between a pair of adjacent protrusions 214 among these protrusions 214. The projecting portion 215 is disposed above the convex portion 214 and contacts the outer peripheral surface of the upper portion of the aerosol container 1 as shown in FIG.

  The aerosol injection device configured as described above is used as follows. First, the button 22 presses the valve stem 12 by pressing the button 22 with a finger. Thereby, aerosol is injected from the valve stem 12 and flows into the flow path 221 inside the button. The aerosol that has flowed out passes through the flow path 221 and is ejected from the nozzle 222 to the outside. On the other hand, when the finger is released from the button 22, the valve stem 12 is returned to the initial position by the spring, and the aerosol injection ends.

  As described above, according to the present embodiment, since the protruding portion 215 is formed on the inner wall surface of the lower opening of the head body, the following effects can be obtained. As shown in FIG. 5, since the protrusion 215 contacts the outer peripheral surface of the upper portion of the aerosol container 1, a gap S is formed on both sides thereof. That is, since the protruding portion 215 is sandwiched between the opening peripheral portion 213 of the head main body 21 and the outer peripheral surface of the upper portion of the aerosol container 1, the opening peripheral portion 213 of the head main body 21 is elastically deformed and pulled in the circumferential direction. As a result, gaps S are formed on both sides of the protrusion 215 in the circumferential direction. Therefore, although the opening peripheral part 213 of the head main body 21 and the outer peripheral surface of the aerosol container 1 upper part are closely_contact | adhering, since such a clearance gap S is formed, the inside of the head main body 21 faces below. It will communicate with the outside.

  By the way, as described above, the button 22 is fitted in the upper opening 212 of the head main body 21, but in order to make the vertical movement of the button 22 smooth, between the button 22 and the edge of the opening 212, There is a gap. If there is such a gap, for example, when the aerosol jet apparatus is placed in a room with high humidity, water may enter from the gap and the water may accumulate in the jet head 2. On the other hand, in this embodiment, since the clearance S is formed between the opening peripheral edge 213 of the head main body 21 and the outer peripheral surface of the upper portion of the aerosol container 1, the accumulated water can be discharged sequentially. Therefore, as in the conventional example, when the aerosol injection device is used, it is possible to prevent water from flowing out from the gap between the buttons 22 and unnecessarily wetting the injection target. In addition, the clearance gap S by this protrusion part 215 should just be a magnitude | size which is the extent which flows out without the surface tension of water acting. Therefore, the height of the protrusion 215 can be set to, for example, about 0.3 to 1 mm.

  In particular, in the present embodiment, the peripheral portion 213 of the head main body 21 is pulled by the protruding portion 215, so that the aerosol container 1 can be tightened by the peripheral portion 213. As a result, the peripheral edge 213 and the aerosol container 1 can be more firmly adhered.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning. For example, in the above-described embodiment, the gap S is formed between the peripheral edge 213 and the aerosol container 1 by providing the protrusion 215 on the peripheral edge 213 of the ejection head 2, but from the internal space of the ejection head 2. Other forms may be used as long as a communication path that communicates with the outside downward can be formed. For example, as shown in FIG. 6, a groove 216 extending in the axial direction is formed on the inner wall surface of the lower opening of the head body. The groove 216 passes through the contact area between the inner wall surface of the opening and the aerosol container 1 and extends to the end of the opening. Therefore, the water inside the head body can be discharged.

  Moreover, in the said embodiment, although the some convex part 214 was provided in the inner wall face of the ejection head, the structure of a convex part is not specifically limited. For example, it is possible to form convex portions that are continuous in the circumferential direction and discontinuously form the convex portions only in regions where protrusions and grooves are formed. Moreover, while forming a cyclic | annular recessed part in the inner wall face of the injection head 2, a convex part is formed in the outer peripheral surface of an aerosol container, and the injection head 2 can also be fixed to an aerosol container by fitting these. In this case, only the region where the above-described protrusions and grooves are formed is not formed with an annular recess or protrusion.

  The form of the ejection head is not particularly limited as long as it forms a gap into which water enters, and can eject the contents of the aerosol container to the outside. For example, the present invention can also be applied to an ejection head that ejects a so-called mousse as shown in FIG. The head main body 81 of the ejection head is provided with a circular upper surface portion 82 that is swingably connected to the upper surface, and an ejection pipe 83 that ejects the contents of the aerosol container 1 to the upper surface portion 82. And a button 84 is formed. In this example, when the button 84 is pressed, the upper surface portion 82 swings, and thereby the stem valve 12 of the aerosol container 1 is pushed. Then, the contents flowing out from the stem valve 12 are injected from the injection pipe 83. Further, a gap 85 is formed around the upper surface portion 82 of the head body 81 so that the upper surface portion 82 can swing, and water can enter from the gap 85. Therefore, the same effect can be obtained by forming the above-described protrusions 215 and grooves 216 on the inner wall surface of the opening peripheral edge 86 of the head body 81 having such a configuration.

It is a perspective view showing one embodiment of an aerosol injection device concerning the present invention. It is the upper perspective view and side view of an aerosol container. It is the perspective view (a) of an ejection head, and its AA sectional view (b). FIG. 4 is a perspective view of the ejection head as viewed from below. FIG. 4 is a cross-sectional view taken along line BB in FIG. It is the perspective view (a) and sectional drawing (b) which show other embodiment of the ejection head which concerns on this invention. It is a perspective view which shows the other example of the head main body applied to the ejection head which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Aerosol container 2 Injection head 21 Head main body 213 Peripheral part 214 Convex part 215 Protrusion part 216 Groove 22 Button

Claims (3)

An ejection head attached to an aerosol container and ejecting its contents,
A head body having an annular peripheral edge closely contacting the outer peripheral surface of the upper part of the aerosol container and covering the upper part of the aerosol container; and a button attached to the head body and capable of pressing the valve stem on the upper part of the aerosol container. ,
Between the head main body and the button, a gap leading to the internal space of the head main body is formed,
Between the peripheral portion and the outer peripheral surface of the upper portion of the aerosol container, there is formed at least one communication passage that communicates the internal space of the head main body with the outside and opens at the lower end of the peripheral portion,
At the peripheral edge, at least one protrusion is formed on the inner wall surface facing the outer peripheral surface of the upper part of the aerosol container, and the protrusion and the outer peripheral surface of the upper part of the aerosol container are in contact with each other, thereby A gap is formed on both sides,
On the outer peripheral surface of the upper part of the aerosol container, an annular recess is formed,
A convex part that fits into the annular concave part is formed on the peripheral part of the head body,
The ejection head in which the convex portion is not formed at a position corresponding to the communication path .   2. The ejection head according to claim 1, wherein the communication path is configured by at least one groove formed in an inner wall surface facing an outer peripheral surface of an upper portion of the aerosol container at the peripheral edge. An aerosol container;
An aerosol injection apparatus comprising: the injection head according to claim 1 .

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