CN112469640B

CN112469640B - Content ejection operation button and aerosol product provided with same

Info

Publication number: CN112469640B
Application number: CN201980049598.4A
Authority: CN
Inventors: 川岛直人
Original assignee: Mitani Valve Co Ltd
Current assignee: Mitani Valve Co Ltd
Priority date: 2018-09-25
Filing date: 2019-09-10
Publication date: 2023-09-08
Anticipated expiration: 2039-09-10
Also published as: WO2020066586A1; JPWO2020066586A1; JP7351045B2; CN112469640A

Abstract

The invention provides a content injection operation button with annular injection ports, which aims to realize uniform injection and atomization of content, high adhesion rate of the content to injection target parts such as affected parts and silencing during content injection. An injection port (A) is provided between the annular nozzle (2) and the core (1 c). The content passage section which reaches the injection port (A) in a straight line in the lateral direction is composed of an upstream annular lateral passage section (B) and a downstream annular lateral passage section (C), the content passing cross-sectional area between the upstream annular lateral passage section (B) and the core (1C) is large to weaken the flow potential of the content, and the downstream annular lateral passage section (C) is formed on the downstream side of the content passage section and the content passing cross-sectional area continuously decreases in the flow direction of the content. The content of the downstream annular lateral passage part (C) is set by an annular nozzle conical surface (2 a) and a core (1C) whose inner diameter decreases toward the injection port (A) in a reduced cross-sectional area.

Description

Content ejection operation button and aerosol product provided with same

Technical Field

The present invention relates to a content injection operation button having a linear content passage portion in a ring, the content injection operation button being configured by an annular gap space region extending to a content injection port provided at a longitudinal outer peripheral portion of a core of a downstream side space region of a lever, and an annular nozzle provided on a content injection port side of the annular gap space region.

In particular, the content passage portion is constituted by an upstream side ring linear lateral passage portion, which has a large content passing cross-sectional area with the core, so as to weaken the flow potential of the content, and a downstream side ring linear lateral passage portion, which is set on the downstream side thereof and has a smaller content passing cross-sectional area with the core, so as to reach the ejection port in the content flow direction.

Further, an injection direction restricting portion that sets a flow direction of the content injected from the content injection port between the annular nozzle and the core to the outer space region inside the annular shape is provided at the inner peripheral surface front end side portion of the annular nozzle on the injection port side.

Further, the annular nozzle inner peripheral surface is prevented from abutting against the core outer peripheral surface, and the annular gap space region between the annular nozzle inner peripheral surface and the core outer peripheral surface is prevented from being partially blocked, and the core is set to a hollow shape.

The present invention is provided with a linear annular content passage portion including such an annular gap space region and an annular nozzle, in which the cross-sectional area of the content is changed, at the content injection operation button, and further, an injection direction regulating portion or the like is provided at the annular nozzle, and as described later, the following are realized:

uniform spray of the content

High adhesion rate of the content to the ejection target portion

Silencing during content injection

Reduction of the amount of resin used

In the present specification, the longitudinal direction of each of the annular gap space region of the core and the outer peripheral portion thereof and the annular nozzle is set to the front-rear direction (lateral direction), the content outflow side is referred to as "front", and the content inflow side opposite thereto is referred to as "rear". That is, the left side of fig. 1, 2, 4, 6 and 7 is set to "front", and the right side is set to "rear".

Background

Conventionally, there has been proposed a content injection operation button in which an annular gap space region as a content passage portion reaching an injection port is provided at a longitudinal outer peripheral portion of a core disposed in a downstream side space region of a lever (refer to patent document 1).

However, in the case of the content injection operation button, the following examination is not performed.

(11) The content flowing in from the rod side is sprayed to the external space region after the upstream side part of the annular linear passage part is in a weak flow potential state,

(12) The diffusion of the content toward the outer side of the substantially annular injection target portion such as the outer space region or the affected portion is slightly prevented on the side of the annular nozzle injection port of the annular gap space region,

(13) The core is made in a hollow shape.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2007-330861

Disclosure of Invention

Problems to be solved by the invention

The present invention contemplates the aspects (11) to (13) described above.

That is, the content passage portion is constituted by an upstream side ring linear lateral passage portion that attenuates the flow potential of the content and a downstream side ring linear lateral passage portion that reaches the ejection port by reducing the cross-sectional area between the downstream side ring linear lateral passage portion and the core in the content flow direction,

an injection direction restriction portion for setting a flow direction of the content injected from the content injection port with the core to the outer space region at an annular inner side is provided at the annular nozzle,

an isolation setting portion or the like for preventing abutment with the outer peripheral surface of the core is formed at the annular nozzle,

the purpose is to achieve uniform spraying of the content, high adhesion rate of the content to the spraying target portion (external space region, affected part, etc.), and silencing at the time of spraying the content.

Further, the purpose is to reduce the amount of resin used by setting the core to be a hollow plastic core.

Means for solving the problems

The present invention solves the above problems as follows.

(1) A content ejection operation button comprising: cores (for example, cores 1c, 1d, 1e, 1g described below) disposed in a downstream ejection-side space region of a rod (for example, rod 5 described below) for performing a content ejection operation that exhibits a valve function along a flow direction of the content; a linear annular gap for the content passage, which is set up at an outer peripheral portion of the core up to an ejection port (for example, an ejection port a described later) of the content; and an annular nozzle (for example, an annular nozzle 2 described later) provided on the ejection port side of the annular gap, wherein the content ejection operation button is configured as follows:

a linear annular content passage portion (for example, an upstream-side linear annular lateral passage portion b+a downstream-side linear annular lateral passage portion C described later) is defined by the annular nozzle and the annular gap,

the annular linear content passage portion has an upstream annular lateral passage portion and a downstream annular lateral passage portion, the content passing cross-sectional area between the upstream annular lateral passage portion and the core being large, so that the flow potential of the content is weakened, and the downstream annular lateral passage portion being set on the downstream side of the content passage portion and being smaller in the flow direction than the upstream annular lateral passage portion so as to reach the ejection port.

(2) In the above (1), the following constitution is used:

the annular nozzle is configured as the downstream annular lateral passage portion, and is set in the form of an inner tapered surface (for example, an annular tapered surface 2a described later) whose inner peripheral surface has a diameter smaller at the tip end side where the injection port is smaller.

(3) A content ejection operation button comprising: cores (for example, cores 1c, 1d, 1e, 1g described below) disposed in a downstream ejection-side space region of a rod (for example, rod 5 described below) for performing a content ejection operation that exhibits a valve function along a flow direction of the content; a linear annular gap for the content passage, which is set up at an outer peripheral portion of the core up to an ejection port (for example, an ejection port a described later) of the content; and an annular nozzle (for example, an annular nozzle 2 described later) provided on the ejection port side of the annular gap, wherein the content ejection operation button is configured as follows:

the annular nozzle is provided with an injection direction regulating portion (for example, a tip circumferential inner surface 2b described later) at an inner circumferential surface front end side portion for setting a flow direction of the content injected from the injection port between the annular nozzle and the core to an outer space region inside the annular shape.

(4) In the above (1) and (2), the following configurations are used:

the annular nozzle is provided with an injection direction regulating portion at an inner peripheral surface front end side portion for setting a flow direction of the content injected from the injection port between the annular nozzle and the core to an outer space region inside the annular shape.

(5) In the above (1) to (4), the following configuration is used:

the annular nozzle is provided with an isolation setting portion (for example, an isolation setting convex portion 2e described later) at an inner peripheral surface for preventing the abutment of the inner peripheral surface portion of the annular nozzle with the outer peripheral surface of the core.

(6) In the above (1) to (5), the following configuration is used:

the cores (for example, cores 1c, 1d, 1e, 1g described later) are hollow plastic elements.

The content spraying operation button having such a structure and the aerosol product having the content spraying operation button are the objects of the invention.

ADVANTAGEOUS EFFECTS OF INVENTION

The present invention can realize the following by adopting the above configuration, as described in (41) to (47) and the like described below:

(21) The content is uniformly sprayed and atomized,

(22) The adhesion rate of the content to the ejection target portion is increased,

(23) The silencing of the content during the injection,

(24) The reduction in the amount of resin used.

Drawings

Fig. 1 is an explanatory view showing a longitudinal section of a jet operation button (button body portion+annular nozzle) constituted by a solid cylindrical core.

Fig. 2 is an explanatory view showing an enlarged state of a portion of the annular ejection port (annular gap) of fig. 1.

Fig. 3 is an explanatory diagram showing the front view of fig. 1. The front view is a shape when the injection operation button shown in fig. 1 and 2 is viewed from the front.

Fig. 4 is an explanatory view showing a longitudinal section of the injection operation button constituted by a core having a sheath shape in front opening/longitudinal circular section.

Fig. 5 is an explanatory diagram showing a front view of fig. 4 and (fig. 6, 7). The front view is a shape when the injection operation buttons shown in fig. 4, 6, and 7 are viewed from the front side.

Fig. 6 is an explanatory view showing a longitudinal section of the injection operation button constituted by the first cylindrical core.

Fig. 7 is an explanatory view showing a longitudinal section of the injection operation button constituted by the second cylindrical core.

Fig. 8 is an explanatory diagram showing a verification example of the content ejection pattern in the ejection operation button of fig. 7.

Detailed Description

An embodiment of the present invention will be described with reference to fig. 1 to 8.

Fig. 1 to 3 show a content ejection operation button in which a core for setting a ring linear space region for content passage at an outer peripheral portion thereof is set to a solid cylindrical shape, and fig. 4 to 7 show a content ejection operation button in which the core is made to be a hollow sheath shape or a cylindrical shape.

The constituent element (for example, the tubular vertical passage portion 1 a) with a letter reference numeral used in the present specification basically represents a part of the constituent element (for example, the button main body portion 1) of the numeral portion of the reference numeral.

In the figures 1 to 7 of the drawings,

a represents an injection port in the form of an annular gap for injecting the content into the outer space region,

b represents an upstream side annular linear transverse passage portion in which the flow potential of the content is reduced by a large cross-sectional area of the content,

c represents a straight-line-shaped lateral passage portion where the content passing sectional area becomes smaller in the content flow direction and reaches the downstream side ring of the ejection port A,

indicating the outer diameter of the front end surface of the core,

represents the inner diameter of the front end surface of the annular nozzle>

θ represents the inclination of the annular tapered surface with respect to the length direction of the core,

l represents the length of the annular tapered surface in the front-rear direction.

The radial length of the annular gap of the injection port A is

In addition, in the case of the optical fiber,

1 denotes a button body portion constituting a spray operation button for the container body contents,

1a denotes a tubular longitudinal passage portion formed at the button main body portion 1 and communicating with a rod 5 to be described later which exhibits a known valve action,

1b represents an annular lateral passage portion for passing the annular linear content which communicates with the outflow portion of the tubular longitudinal passage portion 1a,

1c shows a solid cylindrical core (see fig. 1 to 3) having an annular cross passage portion 1b formed at its outer periphery,

1d shows a core having a sheath-shaped front opening/longitudinal circular cross section and formed with an annular cross-sectional portion 1b at its outer periphery (see fig. 4 and 5),

1e denotes a first cylindrical core (see fig. 6) having an annular cross passage portion 1b formed at its outer periphery,

1f represents a vertical passage area for passing outside air formed in a form of communicating in a downward straight direction from the rear end opening portion of the core 1e,

1g shows a second cylindrical core (see fig. 7) having an annular cross passage portion 1b formed at the outer periphery,

1h represents a lateral passage area for passing outside air formed in a state of communicating in the rear straight direction from the rear end opening portion of the core 1g,

1j denotes an annular stepped portion formed at the outer and inner peripheral surfaces of the annular lateral passage portion 1b, which receives and engages the rear annular surface 2c of the annular nozzle 2 mounted from the opening side thereof,

1k denotes an annular concave portion formed in a portion of the outer peripheral surface of the annular lateral passage portion 1b on the front side of the annular stepped portion 1j and engaged with the annular convex portion 2d of the annular nozzle 2,

1m represents the top surface to be pressed at the time of the ejection operation.

In addition, in the case of the optical fiber,

2 denotes an annular nozzle which is attached to a front end side portion (opening side) of the annular lateral passage portion 1b, constitutes an injection operation button together with the button main body portion 1, and defines an annular content injection port a between each of the front annular portions of the cores 1c, 1d, 1e, 1g,

2a denotes an annular tapered surface of a front narrow shape, which is an entire inner peripheral inclined surface of the annular nozzle 2, and the longitudinal annular sectional area between the inner peripheral surfaces of the cores 1c, 1d, 1e, 1g is smaller toward the injection port side,

2b denotes a front end circumferential inner surface as an injection direction regulating portion which is formed at a front end portion of an inner peripheral surface of the continuous annular tapered surface 2a in a form of a horizontal direction as shown protruding toward the front side than front end surfaces of the cores 1c, 1d, 1e, 1g, and regulates a flow direction of the injected content toward the outer space region to a so-called annular inner side,

2c shows a rear annular surface engaged with the annular stepped portion 1j of the button main body portion 1,

2d denotes an annular convex portion engaged with the annular concave portion 1k of the button main body portion 1,

2e denotes, for example, a total of three quadrangular-shaped isolation setting convex portions formed at the tip portion of the inner peripheral surface of the annular nozzle in a circumferentially equally spaced manner for preventing the other inner peripheral surfaces from abutting against the outer peripheral surfaces of the cores 1c, 1d, 1e, 1g, and isolating both of these peripheral surfaces to ensure annular front-rear direction passage portions of the outer periphery of the cores.

In addition, in the case of the optical fiber,

3 denotes a known container body for containing an aerosol product of a content and a gas for injection described later,

reference numeral 4 denotes a known mounting cup mounted on a winding portion of the open end of the container body 3,

a lever 5 shows a well-known valve action, and is set in an engagement form with the tubular vertical passage portion 1a by projecting its upper end portion from the central opening portion of the mounting cup 4 to the upper side, and is pushed against the upward biasing force.

Here, the button main body 1 and the annular nozzle 2 are made of plastic, for example, polypropylene, polyethylene, polyacetal, nylon, polybutylene terephthalate, or the like.

The container body 3, the stem 5 are made of plastic or metal, for example. Furthermore, the mounting cup 4 is made of metal, for example.

The illustrated content ejection operation button has the following basic features:

(31) An annular nozzle 2 is set on the injection port A side of the annular lateral passage portion 1b of the button main body portion 1 such that its annular tapered surface 2a is opposed to the respective outer peripheral surfaces of the cores 1c, 1d, 1e, 1g,

(32) In this state of the annular lateral passage portion 1b+annular nozzle 2, an upstream-side annular linear lateral passage portion B and a downstream-side annular linear lateral passage portion C reaching the injection port A are defined,

(33) The front end surfaces of the cores 1c, 1d, 1e, 1g are set back from the front end surfaces of the annular nozzles,

(34) An isolation setting convex portion 2e is formed at the inner peripheral surface front end side portion of the annular nozzle 2 at the outer periphery of the core front end surface, the isolation setting convex portion 2e preventing abutment of the annular nozzle inner peripheral surface with the respective outer peripheral surfaces of the cores 1c, 1d, 1e, 1g,

(35) Cores 1d, 1e, and 1g in a so-called hollow shape are formed in the plastic button body 1.

The width (length) of the front end circumferential inner surface 2b of the annular nozzle 2 in the front-rear direction is about 0.5mm, and the retreating length corresponding to the drawing in (33) is about 0.3mm.

Here the number of the elements to be processed is,

(41) The flow potential of the content is weakened by the large cross sectional area of the content passing between the upstream side annular linear lateral passage portion B and the core, and the downstream side annular linear lateral passage portion C is provided between the annular tapered surface 2a and the core outer peripheral surface in such a manner that the cross sectional area of the content passing continuously decreases, and the other annular gap passage portions are reliably set by the abutment action of the isolation setting convex portion 2e against the core outer peripheral surface. Thus, the turbulent flow state of the inflow content is suppressed, and the substantially stable and uniform ejection of the content from the ejection port a is ensured.

(42) Further, by forming the ejection port a in the annular shape, the flow potential of the ejection is reduced as compared with the conventional circular hole-shaped ejection port, and the content is prevented from being diffused by the flow potential of the ejection gas in a state where the content is not attached to the ejection target portion, thereby improving the attachment rate of the content to the ejection target.

(43) In addition to the reduction of the injection flow potential by enlarging the injection port a in the annular shape, the so-called linear reduction of the passage cross-sectional area of the content reaching the injection port a by using the annular tapered surface 2a can suppress pressure fluctuation due to turbulence or the like, thereby making it difficult to gasify the content, and reducing the injection port passage noise of the gasified content.

(44) Further, the flow direction of the content passing through the downstream side annular linear cross passage portion C is displaced inward as approaching the injection port a by the guide of the annular tapered surface 2a, whereby the injected content from the injection port a is easily injected into the annular inner region, and the spread of the injected content outward in the annular shape is suppressed (see fig. 8).

(45) Further, this outward diffusion suppressing effect of the ejection content is more effective in the case where it becomes a peripheral outer wall with respect to the ejection content by forming the front-end circumferential inner surface 2b at the front-end inner circumferential surface portion of the annular nozzle 2. In addition, whether or not the tip circumferential inner surface 2b is provided is arbitrary in addition to the annular tapered surface 2 a.

(46) The content injection operation button shown in the figure ensures uniform atomization of the content, high adhesion rate of the content to the injection target, and noise reduction during content injection.

(47) In addition, the so-called hollow cores 1d, 1e, 1g are formed in the plastic button body 1, thereby ensuring a reduction in the amount of resin used for manufacturing the button body.

The content ejection operation buttons of fig. 1 to 7 are used in a state of being mounted on the lever 5 as shown in the drawing.

When a user or the like presses the top surface 1m of the content ejection operation button, the entire operation button and the lever integral with the operation button move downward.

As the stem 5 moves downward, the known valve action portion of the stem and stem gasket is switched from the closed state to the open state, and the content of the container body 3 flows from the stem 5 into the tubular longitudinal passage portion 1a by the injection gas.

The content flowing into the tubular vertical passage portion 1a is ejected to the outer space region by the flow of the "upstream side annular linear lateral passage portion B-downstream side annular linear lateral passage portion C-annular ejection port a".

The content spray pattern of FIG. 8 is

(outer diameter of core front end surface): 6.5mm

(inner diameter of annular nozzle front end surface): 7.0mm

θ (inclination of annular tapered surface with respect to the core length direction): 15 degrees

L (length of the annular tapered surface in the front-rear direction): 6.3mm

Content and gas for injection: LPG obtained by adding 0.5% ethanol

Injection time: 1 second

Jet distance: 20mm of

Is a verification example of the above.

The illustrated verification pattern is an observation example when the content is ejected onto the thermal paper, and the portion within the illustrated broken line is the ejection pattern itself. The portion extending downward from within the dotted line is a portion where the ejection content hangs down, which is not the ejection pattern itself.

That is, it can be confirmed from the injection pattern itself within the broken line in the drawing that the content is injected substantially uniformly, and the effects of (21), (22) and the like can be seen.

Of course, the present invention is not limited to the above embodiment, and may be:

(51) Instead of the annular tapered surface 2a, an arbitrary number of steps of a front narrow shape are set,

(52) The gap longitudinal section shape of the ejection opening A is set to various shapes such as an ellipse, a polygon and the like other than a circle,

(53) An arbitrary number of isolation setting convex portions 2e are set,

(54) The present invention is applicable to a content injection passage portion corresponding to various button-type operation portions such as a tilting type operation portion and a trigger lever other than the push-down type operation portion.

Examples of the products to which the present invention is applied include products for various uses such as detergents, cleaning agents, antiperspirants, coolants, muscle-diminishing agents, hair-setting agents, hair-care agents, hair dyes, hair-growing agents, cosmetics, shaving foams, foods, pharmaceuticals for nutrition-aid foods (vitamins, etc.), quasi-pharmaceuticals, paints, gardening agents, insect repellents (insecticides), cleaners, deodorants, washing gums, polyurethane foams, fire extinguishers, adhesives, lubricants, etc.

The content contained in the container body may be in various forms such as liquid, cream, gel, etc., and examples of the component to be blended in the content include powder, oil component, alcohol, surfactant, polymer compound, and water as an active ingredient for each application.

As the powder, metal salt powder, inorganic powder, resin powder, and the like are used. For example, talc, kaolin, aluminum hydroxychloride (aluminum salt), calcium alginate, gold powder, silver powder, mica, carbonate, barium sulfate, cellulose, mixtures thereof, and the like are used.

As the oil component, silicone oil, palm oil, eucalyptus oil, camellia oil, olive oil, jojoba oil, paraffin oil, myristic acid, palmitic acid, stearic acid, linoleic acid, linolenic acid, and the like are used.

As the alcohols, monohydric lower alcohols such as ethanol, monohydric higher alcohols such as lauryl alcohol, polyhydric alcohols such as ethylene glycol, glycerin, 1, 3-butylene glycol, and the like are used.

As the surfactant, an anionic surfactant such as sodium lauryl sulfate, a nonionic surfactant such as polyoxyethylene oil ether, an amphoteric surfactant such as lauryl dimethylaminoacetic acid betaine, a cationic surfactant such as alkyl trimethylammonium chloride, and the like are used.

As the polymer compound, methylcellulose, gelatin, starch, casein, hydroxyethylcellulose, xanthan gum, a carboxyvinyl polymer, and the like are used.

As the active ingredients corresponding to each application, there are used an anti-inflammatory analgesic such as methyl salicylate and indomethacin, an antibacterial agent such as sodium benzoate and cresol, a pest repellent such as pyrethroid and diethyltoluamide, an antiperspirant such as zinc oxide, a cooling agent such as camphor and menthol, an antiasthmatic such as ephedrine and epinephrine, a sweetener such as sucralose and aspartame, an adhesive or paint such as epoxy resin and polyurethane, a dye such as p-phenylenediamine and aminophenol, a fire extinguishing agent such as monoammonium phosphate, sodium hydrogencarbonate and potassium, and the like.

In addition to the above-described contents, suspending agents, ultraviolet absorbers, emulsifiers, moisturizers, antioxidants, metal ion chelating agents, and the like can be used.

As the gas (propellant) for injection in the aerosol product, a compressed gas such as carbon dioxide gas, nitrogen gas, compressed air, oxygen gas, rare gas, or a mixed gas thereof, or a liquefied gas such as liquefied petroleum gas, dimethyl ether, fluorocarbon, or the like is used.

Description of the reference numerals

A: jet orifice with annular gap

B: straight-line transverse passage part of upstream side ring

C: straight-line transverse passage part of downstream side ring

1: button main body

1a: tubular longitudinal passage portion

1b: annular transverse passage part

1c: a solid cylindrical shaped core (figures 1 to 3),

1d: a core with a sheath-shaped front opening/longitudinal circular cross section (figures 4, 5),

1e: a first cylindrically shaped core (figure 6),

1f: longitudinal passage area for passage of external air (FIG. 6)

1g: a second cylindrically shaped core (figure 7),

1h: lateral passage area for passage of outside air (FIG. 7)

1j: annular step part

1k: annular recess

1m: top surface

2: annular nozzle

2a: annular conical surface in front narrow form

2b: front end circumferential inner surface

2c: rear end annular surface

2d: annular convex part

2e: isolation setting convex part

3: container body

4: mounting cup

5: rod

Claims

1. A content ejection operation button comprising: a core disposed along a flow direction of the content in a downstream ejection-side space region of the rod for the content ejecting operation exhibiting the valve action; a linear annular gap for the content passage, which is set at an outer peripheral portion of the core up to the ejection port of the content; and a normally open annular nozzle provided on the ejection port side of the annular gap, characterized in that a content ejection operation button for aerosol,

a linear annular content passage portion is defined by the annular nozzle and the annular gap,

the annular linear content passage portion has an upstream side annular lateral passage portion and a downstream side annular lateral passage portion, the content passing cross-sectional area between the upstream side annular lateral passage portion and the core is large, so that the flow potential of the content is weakened, the downstream side annular lateral passage portion is set on the downstream side of the content passage portion and the content passing cross-sectional area between the downstream side annular lateral passage portion and the core is smaller than the upstream side annular lateral passage portion in the flow direction to reach the ejection port,

the annular nozzle is provided with an isolation setting portion at a front end portion of an inner peripheral surface for preventing the front end portion of the inner peripheral surface of the annular nozzle from abutting against an outer peripheral surface of the core.

2. The content ejection operation button according to claim 1, wherein the annular nozzle constitutes the downstream side annular lateral passage portion and is set by an inner conical surface shape whose diameter of an inner peripheral surface is narrowed at a front end side where the ejection port becomes smaller.

3. The content ejection operation button according to claim 1 or 2, characterized in that the annular nozzle is provided at an inner peripheral surface front end side portion with an ejection direction restriction portion for setting a flow direction of the content ejected from the ejection port between the annular nozzle and the core to an outer space region inside the annular shape.

4. The content ejection operation button according to claim 1 or 2, wherein the core is a hollow-shaped plastic member.

5. A content ejection operation button comprising: a core disposed along a flow direction of the content in a downstream ejection-side space region of the rod for the content ejecting operation exhibiting the valve action; a linear annular gap for the content passage, which is set at an outer peripheral portion of the core up to the ejection port of the content; and a normally open annular nozzle provided on the ejection port side of the annular gap, characterized in that a content ejection operation button for aerosol,

the annular nozzle is provided with an injection direction regulating portion at an inner peripheral surface front end side portion for setting a flow direction of the content injected from the injection port between the annular nozzle and the core to an outer space region to an annular inner side,

6. The content ejection operation button according to claim 5, wherein the core is a plastic member of a hollow shape.

7. An aerosol product comprising the content-spraying operation button according to any one of claims 1 to 6, wherein a container body contains a spraying gas and a content.