JP5097000B2 - Aerosol device - Google Patents

Description

  The present invention relates to an aerosol apparatus that ejects gas or liquid in an aerosol container from an injection nozzle.

  2. Description of the Related Art Conventionally, there are two types of aerosol device injection parts, and consumers use the nozzle member itself by removing the overcap at the time of use, and protecting the nozzle member during storage. There are a general type in which the overcap is put on and a type in which the nozzle member is exposed by cutting out a part of the overcap so that the consumer does not have to remove the overcap at the time of use.

  In the latter type, the nozzle member is exposed even if the overcap is not removed at the time of use, so that it can be used with one touch and is highly convenient for consumers and has excellent design.

  The sound (injection sound) generated when injecting the contents, such as aerosol, varies in sound quality depending on the shape of the nozzle member's injection port and the injection port, such as the high sound range or the low sound range. The volume changes depending on the amount of gas remaining in the contents. Furthermore, it has been desired for consumers to reduce the injection sound itself so that it can be used without being noticed by others, and in some cases, it may be felt as an irritating injection sound, and an improvement has been desired.

  Japanese Patent Application Laid-Open No. 2006-167596 (Patent Document 1) discloses a technique for reducing the injection sound by forming a silencer on the flow path wall of the ejection amount passage through which the content passes during ejection. .

  In addition, an injection chamber is formed so that the aerosol contents collide with the nozzle body attached to the push button body by closing the communication path communicating with the stem, and a plurality of injection ports are formed on the front surface of the injection chamber for injection. Japanese Patent Application Laid-Open No. 2003-31192 (Patent Document 2) discloses a technique that suppresses the accompanying feeling of pressure and feeling of cooling and can reduce the injection sound.

An aerosol container that has a double structure consisting of an inner circular wall and an inner corrugated wall surrounding the injection port to reduce the injection noise, and has a noise reduction effect by forming a gap between them. No. 2000-185783 (Patent Document 3).
JP 2006-167596 A JP 2003-31192 A JP 2000-185783 A

  However, in Patent Document 1, a silencer is provided, in the technique of Patent Document 2, a nozzle body is attached to form an injection chamber, and in the technique of Patent Document 3, a double structure is formed. For this reason, there was a problem that the number of parts was large, such as mounting a separate object, and the number of assembly steps was large.

  In view of such circumstances, the present invention is intended to provide an aerosol device that can reduce the injection sound of a one-touch type aerosol container with a simple configuration.

  The present invention relates to an aerosol apparatus.

The present invention relates to an aerosol apparatus having an overcap that attaches a nozzle member to a stem that opens and closes an injection port of a spray can such as an aerosol by a projecting and retracting operation, and movably holds the nozzle member in the projecting and retracting direction of the stem. In
The overcap has a cylindrical outer side surface portion that is attached to a winding fastening portion of the spray can, and an outer injection opening is provided in a part of the outer side surface portion, and inward of the outer side surface portion. Comprises an inner side surface portion having an inner peripheral surface shape that is substantially the same as the outer peripheral surface shape of the nozzle member so that the nozzle member can be protruded and retracted, and the injection port center of the nozzle member, the inner injection opening center, and the outer injection surface The center of the opening for use is aligned in the same direction, and the content injected from the nozzle member is injected toward the opening for inner injection,
A partition that communicates the inner injection opening and the outer injection opening between the inner side surface portion and the outer side surface portion is provided,
An aerosol apparatus characterized in that at least one of an inner injection opening, an outer injection opening, and a partition wall is formed in a concavo-convex shape.

  In the present invention, the partition wall is preferably formed in a corrugated plate shape.

  In the present invention, it is preferable that at least one inner peripheral edge is formed to be uneven in the inner injection opening or the outer injection opening.

  In the present invention, the inner peripheral edge portions of the inner injection opening and the outer injection opening are formed in irregularities, and the partition wall is a cylindrical one that communicates the inner injection opening and the outer injection opening. Thus, it is preferable that the shape of the inner peripheral surface of the partition wall is uneven.

  According to the aerosol device of the first to fourth aspects of the present invention, the partition for connecting the inner injection opening and the outer injection opening is provided between the outer side surface and the inner side surface, and the inner injection opening, the outer Since at least one of the injection opening and the partition wall is formed in a concavo-convex shape, the injection sound when the contents are injected from the nozzle member toward the inner injection opening is relaxed by the concavo-convex shape. Can be avoided. For the reduction of the injection sound, a silencer is provided as in Patent Document 1, a nozzle body is formed by a member having a plurality of injection holes as in Patent Document 2, or the nozzle is surrounded as in Patent Document 3. There is no need to provide an annular wall, and the injection noise can be reduced with a simple configuration in which the partition walls are formed in irregularities. In addition, the ejection noise can be reduced more effectively by the uneven shape compared to simply providing the partition wall.

  In the present invention, the partition wall can be formed into a corrugated plate shape, or at least one inner peripheral edge portion can be formed to be uneven in the inner injection opening or the outer injection opening.

  Further, in the present invention, the inner peripheral edge of the inner injection opening and the outer injection opening is formed in a concavo-convex shape, and the partition wall has a cylindrical shape that communicates the inner injection opening and the outer injection opening. In addition, by forming the inner peripheral surface shape of the partition wall in a concavo-convex shape, the concavo-convex shape is positioned so as to face the entire injection flow path, so that the injection sound can be reduced efficiently.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

1-5 is explanatory drawing of each embodiment of this invention.
1A and 1B are a perspective view and a longitudinal sectional view of an overcap according to the first embodiment. 2A and 2B are bottom views of the overcap before and after the nozzle member is disposed in the overcap of FIG. 3A, 3B, and 3C are a perspective view, a cross-sectional view, and a front view, taken along line bb, of the overcap according to the second embodiment. 4A and 4B are a perspective view and a bottom view of the overcap according to the third embodiment. FIGS. 5A, 5 </ b> B, and 5 </ b> C are a perspective view of an overcap according to the fourth embodiment, a cross-sectional view taken along line bb, and a front view. 6A and 6B are a perspective view and a bottom view of the overcap according to the conventional example 1, and FIGS. 6C and 6D are a perspective view and a bottom view of the overcap according to the comparative example 1, FIG. (F) is the longitudinal cross-sectional view of the overcap concerning the comparative example 2, and a bottom view.

  In the first embodiment, as shown in FIG. 1, a nozzle member 12 is attached to a stem 10 a that opens and closes an injection port of a spray can 10 containing contents such as aerosol (a mixture of liquid and gas) by projecting and retracting ( The spray can 10, the stem 10a, and the nozzle member 12 are all shown by imaginary lines), and relates to an aerosol device having an overcap 14 that holds the nozzle member 12 movably in the protruding and retracting direction of the stem 10a. .

  The spray can 10 is a metal pressure vessel made of, for example, steel or aluminum. As the contents, a liquid containing a solvent or an auxiliary agent in an active ingredient such as an antiperspirant, a bactericidal agent, a deodorant and a fragrance is filled with a propellant such as a liquid gas or a compressed gas.

  The overcap 14 has a cylindrical outer side surface portion 16 attached to the winding portion 10 b of the spray can 10, and an outer injection opening 22 is provided in a part of the outer side surface portion 16, and the outer side Inside the side surface portion 16, an inner side surface portion 18 having an inner peripheral surface shape that is substantially the same as the outer peripheral surface shape of the nozzle member 12 is provided so that the nozzle member 12 can be protruded and retracted. The nozzle 16 is integrally formed of a plastic resin, and the nozzle center 12a of the nozzle member 12, the inner injection opening 20 center 20a, and the outer injection opening 22 center 22a are aligned in the same direction, and the nozzle The contents ejected from the member 12 are ejected toward the inner ejection opening 20 and ejected from the outer ejection opening 22 to the outside.

  A partition wall 24 is provided between the inner side surface portion 18 and the outer side surface portion 16 to partition a space for communicating the inner injection opening 20 and the outer injection opening 22. As shown in FIG. 2, it is a space between the inner side surface portion 18 and the outer side surface portion 16 and is provided at an appropriate position so as to partition the space around the inner injection opening 20 and the outer injection opening 22 from other spaces. .

  In the first embodiment, the partition wall 24 among the inner spray opening 20, the outer spray opening 22, and the partition wall 24 is formed in an uneven shape. Specifically, as shown in FIG. 2, the partition wall 24 is formed in a corrugated shape in which a plate material having substantially the same thickness is formed into a wave shape when viewed in the axial direction of the overcap 14. As described above, in the first embodiment, the partition wall 24 has the same corrugated shape along the axial direction, so that the mold can be smoothly removed in the axial direction when the overcap 14 is molded, and the molding can be easily performed. .

As shown in FIG. 3, the overcap 14 according to the second embodiment has a circular inner opening 20, and an inner peripheral edge of the outer injection opening 22 is formed in irregularities. The cylindrical opening 20 and the outer injection opening 22 are formed in a cylindrical shape so as to communicate with each other. Since the unevenness is formed in the outer injection opening 22, the formation of the unevenness is easy.
The configuration of other portions is the same as that of the overcap 14 of the first embodiment.

As shown in FIG. 4, the overcap 14 according to the third embodiment is formed such that the inner peripheral edge portions of the inner injection opening 20 and the outer injection opening 22 are uneven, and the partition wall 24 has these inner injection openings. 20 and the outer injection opening 22 communicate with each other in a plate shape along the axial direction. Unevenness can be formed in the inner injection opening 20 and the outer injection opening 22 to obtain a sufficient silencing effect, and the partition wall 24 extends along the axial direction. Can be carried out smoothly and can be molded easily.
The configuration of other portions is the same as that of the overcap 14 of the first embodiment.

In the overcap 14 according to the fourth embodiment, as shown in FIG. 5, the inner peripheral edge portions of the inner injection opening 20 and the outer injection opening 22 are formed to be uneven, and the partition wall 24 has the inner injection openings. 20 and the outer injection opening 22 communicate with each other, and the inner peripheral surface shape of the partition wall 24 is formed to be uneven. The unevenness of each inner peripheral edge of the inner injection opening 20 and the outer injection opening 22 and the unevenness of the partition wall 24 are continuously formed. Since a separate peripheral wall concavo-convex cylinder can be formed by being inserted through the overcap 14, molding is easy. In addition, since the cylindrical partition wall 24 is provided with irregularities, the noise reduction effect is great.
The configuration of the other parts is the same as that of the overcap 14 of the first embodiment.

  Next, the operation of the above-described embodiment will be described.

  The silencing effect of the overcap 14 according to the embodiment was evaluated by a sensory test.

  FIG. 6 shows overcaps A, B, and C of Conventional Example 1 and Comparative Examples 1-2. In either case, the outer side surface portion 110 and the inner side surface portion 112 are integrally formed and have the same configuration as in the embodiment.

  6A and 6B are a perspective view and a bottom view of a conventional overcap A having no partition wall between the inner injection opening 100 and the outer injection opening 102, respectively.

  6 (c) and 6 (d) show an overcap of Comparative Example 1 in which a partition wall 104 having no irregularities along the axial direction is formed on the overcap between the inner injection opening 100 and the outer injection opening 102. It is the perspective view and bottom view of the cap B.

  6 (e) and 6 (f) show a comparative example 2 in which a cylindrical partition wall 106 having a trumpet shape with no irregularities communicating between the inner injection opening 100 and the outer injection opening 102 is formed. FIG. 6 is a perspective view and a bottom view of the overcap C.

  In the test, about the injection sound when the contents of the first embodiment, the second embodiment, the fourth embodiment, and the overcaps of the conventional example 1, the comparative example 1, and the comparative example 2 are attached to the spray can 10 and the contents are injected. evaluated. The evaluation method is a sensory test by n = 10 people.

この評価結果から、従来例１では、噴射音には耳障りな音が含まれたままであった。また、比較例１と比較例２では、耳障りな音が少し減少しているが充分ではなかった。 The test results are shown in Table 1.

From this evaluation result, in the prior art example 1, the jetting sound still contained an annoying sound. In Comparative Example 1 and Comparative Example 2, the harsh sound was slightly reduced, but it was not sufficient.

  On the other hand, in Embodiment 1 and Embodiment 4, there was no annoying sound in the injection sound, and the sound was reduced. Moreover, in Embodiment 2, there was no harsh sound in the injection sound.

  The aerosol device of the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the scope of the present invention.

(A), (b) is the perspective view of the overcap which concerns on Embodiment 1, and a longitudinal cross-sectional view. (A), (b) is a bottom view of the overcap before and after arrangement | positioning of the nozzle member in the overcap of FIG. (A), (b), (c) is the perspective view of the overcap concerning Embodiment 2, the cross-sectional view in alignment with a bb line, and a front view. (A), (b) is the perspective view of the overcap which concerns on Embodiment 3, and a bottom view. (A), (b), (c) is the perspective view of the overcap concerning Embodiment 4, the cross-sectional view in alignment with a bb line, and a front view. (A), (b) is a perspective view and bottom view of the overcap according to Conventional Example 1, and (c), (d) is a perspective view, bottom view of the overcap according to Comparative Example 1, (e), (f) ) Is a longitudinal sectional view and a bottom view of the overcap according to Comparative Example 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Spray can 10a Stem 10b Tightening part 12 Nozzle member 12a Injection nozzle center 14 Overcap 16 Outer side part 18 Inner side part 20 Inner injection opening 20a Inner injection opening center 22 Outer injection opening 22a Outer injection Opening center 24

Claims (4)

In an aerosol apparatus having an overcap that attaches a nozzle member to a stem that opens and closes an injection port of a spray can such as an aerosol by a projecting and retracting operation, and movably holds the nozzle member in the projecting and retracting operation direction of the stem.
The overcap has a cylindrical outer side surface portion that is attached to a winding fastening portion of the spray can, and an outer injection opening is provided in a part of the outer side surface portion, and inward of the outer side surface portion. Comprises an inner side surface portion having an inner peripheral surface shape that is substantially the same as the outer peripheral surface shape of the nozzle member so that the nozzle member can be protruded and retracted, and the injection port center of the nozzle member, the inner injection opening center, and the outer injection surface The center of the opening for use is aligned in the same direction, and the content injected from the nozzle member is injected toward the opening for inner injection,
A partition that communicates the inner injection opening and the outer injection opening between the inner side surface portion and the outer side surface portion is provided,
An aerosol apparatus, wherein at least one of the inner injection opening, the outer injection opening, and the partition wall is formed in an uneven shape.   The aerosol device according to claim 1, wherein the partition wall is formed in a corrugated plate shape.   The aerosol apparatus according to claim 1, wherein at least one inner peripheral edge portion is formed to be uneven in the inner injection opening or the outer injection opening.   The inner peripheral edge of each of the inner injection opening and the outer injection opening is formed in a concavo-convex shape, and the partition wall has a cylindrical shape that communicates the inner injection opening and the outer injection opening. The aerosol device according to claim 1, wherein the peripheral surface shape is formed to be uneven.

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