WO2019163183A1

WO2019163183A1 - Actuator for aerosol container

Info

Publication number: WO2019163183A1
Application number: PCT/JP2018/035669
Authority: WO
Inventors: 拓也山科; 敏郎松村; 佐藤　健二; 鈴木　雅之
Original assignee: 株式会社マンダム; 株式会社丸一
Priority date: 2018-02-23
Filing date: 2018-09-26
Publication date: 2019-08-29
Also published as: CN110831871A; KR20200015705A; JPWO2019163183A1; JP6994744B2

Abstract

This actuator (1) for an aerosol container is provided with: a spherical rolling body 3; and a holder 4 having a recessed section 41 that rollably holds the rolling body. The bottom section of the holder 4 is provided with a stem connection part 42 that has a discharge passage 7 of the content of the aerosol container 2 and that is fitted to a stem 23, the discharge passage 7 communicating with an injection hole 77 formed inside the recessed section 41. In the recessed section 41, a plurality of spherical protrusions 81, 82 are provided protruding to the same height and spaced apart from each other on each of the internal surface near the bottom section and the internal surface along an opening edge. The discharge passage 7 is provided with a middle orifice that reduces the injection pressure of the content. Thus, the rolling body 3 rolls smoothly at all times, a certain amount of the content may be stably supplied, and the rolling body 3 is prevented from popping out.

Description

Actuator for aerosol container

The present invention relates to a roll-on type actuator for an aerosol container.

Roll-on type skin external products are commercially available in which skin external preparations such as body odor inhibitors and sunscreen agents are applied to the skin via spherical rolling elements. According to this type of external skin product, the contents can be accurately applied to a desired site without soiling the hand, and a massage effect by pressing the skin can also be obtained. The roll-on type application tools used for this type of external skin product can be roughly classified into two types: non-aerosol type and aerosol type.

Non-aerosol-type applicators have a holder that holds a spherical rolling element so that it can roll, and the contents are supplied to the outer surface of the rolling element by tilting or shaking the container body. It has come to be. By pressing the rolling elements against the skin and rolling, the contents can be applied to the target site. Therefore, in the non-aerosol application tool, in order to prevent the contents from being exposed to the outside air, a means for closing the gap between the rolling element and the holder is required at least when not in use.

On the other hand, in an aerosol-type application tool, an actuator including a spherical rolling element and a holder that rotatably holds the rolling element is made of a metal pressure vessel such as aluminum or tin (hereinafter referred to as “aerosol container”). .)) Is attached to the aerosol container so as to be fitted to the stem protruding from. When the actuator pushes the stem, the aerosol valve is opened, and the content filled in the aerosol container is ejected from the stem and adheres to the outer surface of the rolling element through the ejection hole provided in the holder. By pressing the rolling element against the skin and rolling, the contents can be applied to the target site.

According to the aerosol-type applicator equipped with such an actuator, the contents are prevented from being ejected by the valve of the aerosol container. Therefore, as in the case of the non-aerosol-type applicator, at least when not in use. It is not necessary to close the gap between the moving object and the holder. This increases the degree of freedom in designing the actuator. However, even for such an actuator, for example, further improving the rolling performance of the rolling element, preventing the dripping by making the amount of ejected content constant, or preventing the rolling element from jumping out by the force of ejection, etc. However, the present situation is that an actuator that can sufficiently satisfy these problems has not yet been put into practical use.

For example, Patent Document 1 discloses an aerosol whose problem to be solved is to improve the durability of component parts, facilitate disposal after use, provide a comfortable massage effect, and prevent inadvertent dripping. Containers have been proposed. In the aerosol container, a spherical rolling element (ball) is held in a state where a part of the rolling element is exposed to be able to roll, and a rolling element is engaged with the stem protruding from the pressure resistant container. A seat which is elastically supported under cooperation is attached. The seat is provided with an elastic partition wall that separates the stem from the rolling elements except for the region of the ejection hole at the tip of the stem. The elastic partition has an arch-shaped receiving surface that is convex upward, and a plurality of protrusions are formed integrally with the elastic partition on the upper surface. According to such a configuration, the elastic partition wall elastically supports the rolling element by the receiving surface and the protrusion, so that a large vertical motion of the rolling element is ensured, a comfortable massage effect is obtained, and inadvertent It is said that the effect of preventing dripping is also obtained.

JP 2001-240163 A

In the aerosol container disclosed in Patent Document 1, a rolling element is accommodated between a holder and a receiving seat, and is held in a state where it can move greatly up and down by elastic deformation of an elastic partition provided in the receiving seat. That is, the gap between the inner surface of the holder and the outer surface of the rolling element changes variously depending on how the rolling element is pressed. Therefore, the contents are excessively supplied to the widened gap, and the contents overflow from the opening edge of the holder, or when the rolling element is pushed hard, the elastic partition is greatly deformed, and the gap around the ejection hole at the tip of the stem becomes large. There is a possibility that unevenness may occur in the supply amount of the content, such as the content being blocked and not being sufficiently supplied. Further, there is a concern that the biasing force received from the elastic partition wall varies due to the bias of the rolling elements in the holder, and the rolling performance of the rolling elements changes irregularly. If the urging force by the elastic partition is too strong, the rolling element may jump out of the holder.

Furthermore, since the seat is molded separately from the holder by a resin material that is more elastically deformed than the holder, it becomes difficult to liquid-tightly seal the joint between the holder and the seat. In addition, liquid dripping may occur from the gap.

The present invention has been made paying attention to these problems. The rolling elements always roll lightly with a constant feel, and the contents are stably supplied at a constant supply amount. An object of the present invention is to provide an aerosol container actuator that can reliably prevent the moving body from popping out.

In order to achieve the above-described object, an actuator for an aerosol container according to the present invention includes a rolling element having a spherical outer surface and a rolling element in a state where a part of the rolling element is exposed in a recess having a spherical inner surface. A holder that can be held, and is attached to an aerosol container in which the contents are pressure-filled, and the contents ejected by pushing a stem projecting from the aerosol container are in the recess of the holder In the roll-on type aerosol container actuator configured to be supplied and attached to the outer surface of the rolling element, a stem connection portion having a lead-out path for the contents is provided at the bottom of the holder, and the stem connection A portion is fitted to the stem, and the lead-out path is communicated with an ejection hole formed in the recess, and an inner surface near the bottom of the recess , On the inner surface along the opening edge of the recess, the spherical protuberance of each plurality, respectively adopting the basic configuration of aligned protrusion height is provided spaced apart from one another, and.

According to this basic configuration, the inner surface of the concave portion of the holder and the inner surface near the bottom of the concave portion and the inner surface along the opening edge are respectively provided with a plurality of spherical ridges so that the inner surface of the concave portion The gap between the surface and the outer surface of the rolling element is always kept constant throughout the entire recess. Thereby, the ejection amount of the contents is stabilized, and the adhesion amount of the contents to the outer surface of the rolling element is equalized. In addition, because of the shape of the spherical bulge, it is extremely difficult to elastically deform in the direction of crushing, so even when the rolling element is pushed in strongly, the rolling element plugs the ejection hole in the recess and the contents are not easily ejected. Can be prevented.

Since the spherical bulge and the outer surface of the rolling element are in point contact with each other, the rolling elements do not hinder rolling, and the rolling element always rolls smoothly with constant lightness. . Since the spherical bulge has no directionality, non-uniformity of the rolling property due to the rolling direction does not occur. Furthermore, the spherical bulge provided along the opening edge of the recess also serves to prevent the rolling element from jumping out of the opening surface of the recess.

In this invention, it is preferable that the spherical bulges formed in the vicinity of the bottom of the recess are arranged at equal intervals on a virtual circle centered on the ejection hole. Or it is preferable to arrange | position at equal intervals on the virtual circle centering on the intersection of the axis line orthogonal to the opening surface of the said recessed part, and passing through the spherical center of the said recessed part, and the inner surface of the said recessed part.

Further, the actuator for an aerosol container of the present invention includes a large-diameter hole portion having an inner diameter that matches the outer diameter of the stem, and a hole diameter of the stem that is connected to the large-diameter hole portion via a step portion. A narrow medium-diameter hole, a tapered hole connected to the medium-diameter hole via a step, and a small-diameter hole connected to the reduced diameter end of the tapered hole with the same diameter as the reduced diameter end. Are provided, and the additional structure is adopted in which the small-diameter hole portion is opened into the concave portion to form an ejection hole.

That is, in this configuration, a middle orifice for pressure reduction is provided in a lead-out path connecting a stem projecting from an aerosol container and an ejection hole formed in the holder. By the action of the middle orifice, the moment when the contents are ejected from the stem is weakened, and the rolling-out of the rolling elements can be prevented more reliably.

Furthermore, the present invention employs an additional configuration in which the entire inner surface of the concave portion in the holder is integrally formed so as to be liquid-tightly continuous without a gap except for the ejection hole. Thereby, it is possible to prevent the contents from leaking from the inside of the recess to the inside of the actuator.

According to the aerosol container actuator of the present invention configured as described above, a plurality of spherical bulges provided on the inner surface of the concave portion of the holder for holding the rolling element are formed on the inner surface of the concave portion and the outer surface of the rolling member. Since the gap with the surface is always kept constant, the ejection amount of the contents is stabilized, and the adhesion amount of the contents to the outer surface of the rolling element is equalized. Further, the rolling property of the rolling element is improved by the point contact between the spherical bulge and the outer surface of the rolling element. Furthermore, the spherical bulge provided along the opening edge of the recess prevents the rolling element from jumping out of the opening surface of the recess.

Further, the actuator for an aerosol container of the present invention is configured such that a middle orifice for reducing the ejection pressure of the contents is formed in a lead-out path connecting the stem projecting from the aerosol container and the ejection hole formed in the holder. As a result, the rolling-out of the rolling element is further less likely to occur.

It is an external appearance perspective view of the actuator for aerosol containers concerning a 1st embodiment of the present invention. It is a longitudinal cross-sectional view of the said actuator for aerosol containers. It is sectional drawing which expanded the principal part of FIG. 2 partially. FIG. 4 is a cross-sectional view illustrating a configuration of a lead-out path by further enlarging the main part of FIG. 3. It is the perspective view which removed the rolling element of the said actuator for aerosol containers, and represented the inner surface of the holder. FIG. 2 is a cross-sectional view of the aerosol container actuator taken along the line AA. FIG. 10 is a cross-sectional view taken along line AA showing a modification of the aerosol container actuator according to the arrangement of spherical ridges. FIG. 8 is a cross-sectional view of the aerosol container actuator of FIG. 7 taken along the line BB. It is an external appearance perspective view of the actuator for aerosol containers which concerns on 2nd Embodiment of this invention. It is a longitudinal cross-sectional view of the said actuator for aerosol containers. It is sectional drawing which expanded the principal part of FIG. 10 partially. It is the perspective view which removed the rolling element of the said actuator for aerosol containers, and represented the inner surface of the holder. It is CC sectional drawing of the said actuator for aerosol containers.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1 to 6 show an aerosol container actuator (hereinafter simply referred to as “actuator”) according to a first embodiment of the present invention. This actuator 1 is mounted on the upper part of an aerosol container 2 filled with pressure. In the following description, when showing the positional relationship and orientation of the parts and members, the vertical direction and the horizontal direction are specified based on the state shown in FIG. 1 in which the aerosol container 2 is upright.

The aerosol container 2 is sealed by clinching a mountain cup 22 on the upper part of the container body 21 as shown in FIG. A housing (not shown) containing an aerosol valve is fixed to the inner center portion of the mountain cup 22, and a cylindrical stem 23 is inserted into the housing, and the upper portion of the stem 23 is attached above the aerosol container 2. Projected in a state of force. When the stem 23 is pushed into the inside of the aerosol container 2, the aerosol valve is opened, and the contents filled in the aerosol container 2 are ejected from the upper end opening of the stem 23.

It should be noted that the present invention does not include the detailed structure of the pressurization mechanism of the aerosol container 2 or the aerosol valve, etc., and therefore, these are implemented by appropriately combining conventionally known technical means. Can do. Further, as the contents filled in the aerosol container 2, for example, a body odor suppressor, a sunscreen agent, an anti-inflammatory analgesic, and the like are assumed, but the present invention also particularly restricts the kind and composition of the contents. It is not a thing.

The illustrated actuator 1 includes a rolling element 3 having a spherical and smooth outer surface, a holder 4 that holds the rolling element 3 so as to freely roll, and a holder 4 that can move up and down in response to the pressing of the rolling element 3. Shoulder cover 5 and a cap 6 that covers the shoulder cover 5 and covers the holder 4 and the rolling element 3.

The holder 4 is formed with a concave portion 41 having a spherical smooth inner surface so as to open upward. The recess 41 is integrally formed so that the entire inner surface thereof is liquid-tight and continuous with no gap except for an ejection hole 77 to be described later. The rolling element 3 is press-fitted into the recess 41, and a part of the rolling element 3 is formed. Is held so as to be able to roll in a state of being exposed upward.

At the bottom of the holder 4, there are provided a stem connecting part 42 having a content outlet path 7 and a short cylindrical loose insertion cylinder 43 that stabilizes the vertical movement of the holder 4 due to the pressing of the rolling elements 3. . The detailed configuration of the derivation path 7 will be described later.

Also, on the side of the holder 4, engaging protrusions 44 are provided so as to protrude downward from four locations in the circumferential direction of the holder 4 so as to prevent the holder 4 from being detached from the shoulder cover 5.

On the other hand, the shoulder cover 5 has a short cylindrical guide tube portion 51 that is inserted from the outside into the loose insertion tube portion 43 of the holder 4 to guide the vertical movement of the holder 4, and an inner peripheral wall portion 52 that surrounds the outside. And an outer peripheral wall portion 53 that further surrounds the outside. Then, the lower edge of the inner peripheral wall portion 52 is fitted to the outer peripheral edge of the mountain cup 22, and the shoulder cover 5 is fixed to the aerosol container 2.

An engagement groove 54 is formed between the inner peripheral wall portion 52 and the outer peripheral wall portion 53, and the engagement protrusion 44 portion of the holder 4 is inserted into the engagement groove 54 so as to be movable up and down, and It is held so as not to come out easily. In this state, the stem connecting portion 42 of the holder 4 is fitted into the stem 23, and the stem 23 is pushed in response to the pressing of the rolling elements 3 and the holder 4.

The essential parts of the present invention are the shape of the lead-out path 7 provided in the stem connection part 42 of the holder 4 and the spherical ridges 8 provided at a plurality of locations on the inner surface of the recess 41. Details thereof are shown in FIGS.

3 and 4, the lead-out path 7 has a large-diameter hole portion 71 having an inner diameter matching the outer diameter of the stem 23 and an axial direction of the stem 23 in order from the bottom to the top. Connected to the large-diameter hole portion 71 through the flat stepped portion 72 orthogonal to the medium-diameter hole portion 73 thinner than the hole diameter of the stem 23, and connected to the intermediate-diameter hole portion 73 via the stepped portion 74 upward The diameter-reduced tapered hole portion 75 and the diameter-reduced end (upper end) of the tapered hole portion 75 are provided with a small-diameter hole portion 76 that is connected with the same diameter as the diameter-reduced end. 41 is formed as an ejection hole 77.

In this way, the outlet pressure of the contents ejected from the stem 23 is reduced by forming the lead-out path 7 so as to reduce the diameter stepwise. The two

step portions

72 and 74 provided so as to be orthogonal to the ejection direction act as walls against which the ejection flow collides, and effectively contribute to the reduction of the ejection pressure. The specific diameter of the small-diameter hole portion 76 at which such an effect is easily obtained is about 0.2 to 2.0 mm, particularly preferably about 0.3 to 1.0 mm.

The concave portion 41 communicated with the lead-out path 7 is provided with a plurality of

spherical ridges

81 and 82 on the inner surface near the bottom and on the inner surface along the opening edge.

Individual

spherical ridges

81 and 82 have a smooth front surface with a circular shape and a thin hemispherical shape (lens shape). As specific dimensions, the diameter is about 0.5 to 5.0 mm, particularly preferably about 1.0 to 2.5 mm, and the raised height is 0.1 to 1.5 mm, particularly preferably 0.2. About 0.8 mm. It is preferable that all of the plurality of

spherical ridges

81 and 82 are provided with the same ridge height, but the diameter is not necessarily limited thereto.

The

spherical ridges

81 and 82 are formed integrally with the holder 4 by the same material as the synthetic resin material constituting the holder 4.

For example, about six spherical ridges 81 provided along the opening edge of the recess 41 are arranged so as to be substantially equidistant in the circumferential direction of the opening edge.

Further, about three spherical ridges 82 provided in the vicinity of the bottom of the recess 41 are arranged at substantially equal intervals along a virtual circle centered on the ejection hole 77 formed in the bottom. The size of the virtual circle corresponding to “near the bottom” is such that the divergence angle θ from the vertical axis passing through the spherical center 45 of the recess 41 and the ejection hole 77 is 4 to 20 degrees, and particularly preferably about 5 to 15 degrees. It is a size.

In this way, the plurality of

spherical ridges

81, 82 provided on the inner surface of the recess 41 of the holder 4 always keep the gap between the inner surface of the recess 41 and the outer surface of the rolling element 3 over the entire recess 41. It acts to keep it constant. By keeping the size of the gap constant, the contents ejected from the ejection holes 77 pass between the

spherical ridges

81, 82 and spread evenly on the inner surface of the recess 41, and the outside of the rolling element 3 It adheres favorably to the surface. In addition, since the

spherical ridges

81 and 82 have a shape that is extremely difficult to deform in the crushing direction, even when the rolling element 3 is strongly pressed, the rolling element 3 plugs the ejection hole 77 in the recess 41. Thus, it is possible to prevent the contents from being easily ejected.

Furthermore, since the

spherical ridges

81 and 82 and the outer surface of the rolling element 3 are in point contact with each other between the convex surfaces, the rolling element 3 is not prevented from rolling, and the rolling element 3 is always fixed. Rolls smoothly with lightness. Since the

spherical ridges

81 and 82 have no directionality, there is no nonuniformity in rolling characteristics depending on the rolling direction. Furthermore, the spherical ridge 81 provided along the opening edge of the recess 41 also serves to prevent the rolling element 3 from jumping out of the opening surface of the recess 41.

Regarding the arrangement of the

spherical ridges

81 and 82, it is preferable that 3 to 9 are arranged in the circumferential direction in the vicinity of the bottom of the recess 41 and along the opening edge. In the case of two or less, the stability of the rolling element 3 is lost, and the rolling property tends to deteriorate. On the other hand, when the number is 10 or more, the ejected contents tend to be an obstacle when the contents expand along the inner surface of the recess 41.

Further, it is preferable that the

spherical ridges

81 and 82 are arranged at substantially equal intervals in the vicinity of the bottom of the recess 41 and along the opening edge. Although there may be some variation in individual intervals, it is preferable that they are separated from each other by at least a certain distance so as not to prevent the contents from spreading.

7 to 8 show modifications according to the arrangement of the spherical ridges 82 provided in the vicinity of the bottom of the recess 41. FIG. Three spherical ridges 82 are arranged along each of the inner and outer double virtual circles centered on the ejection hole 77. The size of the inner virtual circle is such that the divergence angle θ1 from the vertical axis passing through the spherical center 45 of the recess 41 and the ejection hole 77 is about 6 degrees, and the size of the outer virtual circle is The spread angle θ2 from the vertical axis is about 15 degrees. In both the inner side and the outer side, three spherical ridges are arranged at equal intervals so as to form a central angle of 120 degrees in the top view with the ejection hole 77 as the center, but the inner three and the outer three Means that the arrangement directions around the ejection holes 77 are shifted from each other by 60 degrees in a top view. Further, the height of the spherical protrusion 82 is the same on both the inside and the outside, but the diameter is larger on the outside than on the inside.

Such an arrangement is advantageous for dispersing the pressure concentration near the bottom of the recess 41 due to the pressing of the rolling elements 3. Further, by making the diameter of the spherical protrusion 82 on the inner side near the ejection hole 77 smaller than that on the outer side, the contents ejected from the ejection hole 77 are not easily disturbed.

(Second Embodiment)
9 to 13 show an actuator 1 according to a second embodiment of the present invention. Since this actuator 1 is mounted on the same aerosol container 2 as that shown in the first embodiment, description of the aerosol container 2 is omitted. In addition, components having the same functions or operations as those of the first embodiment are denoted by the same reference numerals, and the description thereof is simplified.

In the same manner as in the first embodiment, the actuator 1 rolls the rolling element 3 having a spherical outer surface and the rolling element 3 in a recess 41 having a spherical inner surface, with a part thereof exposed. A holder 4 that can be held, and a shoulder cover 5 that holds the holder 4 so as to be movable up and down in response to the pressing of the rolling element 3, but the concave portion 41 of the holder 4 opens obliquely upward. This is different from the first embodiment. Specifically, the opening surface of the recess 41 of the holder 4 is formed so as to be inclined by about 10 to 80 degrees, particularly preferably about 20 to 45 degrees with respect to the horizontal plane in a state where the aerosol container 2 is upright. .

The holder 4 swings in the vertical direction by axially attaching the shaft portion 47 of the hinge arm 46 projecting from the holder 4 to a hinge receiving portion 55 provided inside the inner peripheral wall portion 52 of the shoulder cover 5. It is held so that it can move. In this state, a stem connecting portion 42 provided at the bottom of the holder 4 is fitted to the stem 23 of the aerosol container 2, and the stem 23 is pushed in response to the rolling element 3 and the holder 4 being pushed down. The detailed configuration of the lead-out path 7 provided in the stem connection portion 42 is the same as that in the first embodiment (FIG. 4).

The holder cover 9 is attached to the upper part of the shoulder cover 5 so as to surround the outside of the holder 4 that opens obliquely. Further, the cap 6 is put on the holder cover 9 to cover the exposed portion of the rolling element 3.

Also in this actuator 1, a plurality of

spherical ridges

81 and 82 are provided on the inner surface of the recess 41, but the arrangement of the

spherical ridges

81 and 82 is such that the recess 41 of the holder 4 opens obliquely upward. This is somewhat different from the first embodiment. The shapes and dimensions of the

spherical ridges

81 and 82 are the same as those in the first embodiment.

For example, about six spherical ridges 81 are arranged at substantially equal intervals along the opening edge of the inclined recess 41. The spherical ridge 82 provided in the vicinity of the bottom of the recess 41 is not a virtual circle centered on the ejection hole 77 formed at the bottom, but the spherical center 45 of the recess 41 is perpendicular to the opening surface of the recess 41. For example, about three are arranged at substantially equal intervals along an imaginary circle centered at an intersection 48 between the axis passing therethrough and the inner surface of the recess 41. Also in this form, the size of the virtual circle is such that the spread angle θ from the axis passing through the spherical center 45 of the recess 41 and the intersection 48 is 4 to 20 degrees, particularly preferably about 5 to 15 degrees. .

Even in such an embodiment, the gap between the inner surface of the concave portion 41 of the holder 4 and the outer surface of the rolling element 3 is held constant, so that the amount of ejection of the contents is stable and the rolling element 3 is stable. The spread to the outer surface is improved. Further, the rolling performance of the rolling element 3 is improved, and furthermore, the rolling element 3 can be prevented from jumping out from the opening surface of the recess 41.

Although two types of embodiments of the present invention have been exemplified above, the technical scope of the present invention should not be construed as limited by the illustrated embodiments, but conceptually based on the description of the claims. It should be interpreted. In carrying out the present invention, the shape, structure, positional relationship, joining form, etc. of members / parts not specifically specified in the claims are appropriately modified within the scope of the present invention. can do.

DESCRIPTION OF SYMBOLS 1 Actuator 2 Aerosol container 21 Container body 22 Mountain cup 23 Stem 3 Rolling body 4 Holder 41 Recess 42 Stem connection part 43 Free insertion cylinder part 44 Engagement protrusion 45 Ball center 46 Hinge arm 47 Shaft part 48 Intersection point 5 Shoulder cover 51 Guide cylinder Part 52 inner peripheral wall part 53 outer peripheral wall part 54 engaging groove 55 hinge receiving part 6 cap 7 lead-out path 71 large diameter hole part 72 step part 73 medium diameter hole part 74 step part 75 taper hole part 76 small diameter hole part 77 ejection hole 81 Spherical ridge 82 Spherical ridge 9 Holder cover

Claims

A rolling element having a spherical outer surface;
A holder for holding the rolling element in a recess having a spherical inner surface so that the rolling element can be rolled in a state in which a part thereof is exposed;
Comprising
The contents are attached to an aerosol container filled with pressure,
In the roll-on type aerosol container actuator configured such that the contents ejected by pushing a stem projecting from the aerosol container are supplied into the concave portion of the holder and adhere to the outer surface of the rolling element.
A stem connection part having a lead-out path for the contents is provided at the bottom of the holder,
The stem connection portion is fitted to the stem,
The lead-out path communicates with an ejection hole formed in the recess;
A plurality of spherical bulges are provided on the inner surface in the vicinity of the bottom of the concave portion and the inner surface along the opening edge of the concave portion, respectively, with the height of the ridges being spaced apart,
An actuator for an aerosol container.
In the aerosol container actuator according to claim 1,
In the lead-out path,
A large-diameter hole having an inner diameter that matches the outer diameter of the stem;
A medium-diameter hole portion that is connected to the large-diameter hole portion via a stepped portion and is thinner than the hole diameter of the stem;
A taper hole connected to the medium diameter hole via a step;
A small diameter hole portion connected to the reduced diameter end of the tapered hole portion with the same diameter as the reduced diameter end;
Is provided,
The small-diameter hole portion is opened into the concave portion to form an ejection hole;
An actuator for an aerosol container.
The actuator for an aerosol container according to claim 1 or 2,
Spherical ridges formed in the vicinity of the bottom of the recess are arranged at equal intervals along a virtual circle centered on the ejection hole.
An actuator for an aerosol container.
The actuator for an aerosol container according to claim 1 or 2,
A spherical ridge formed in the vicinity of the bottom of the recess is along a virtual circle centered at the intersection of the axis passing through the spherical center of the recess and the inner surface of the recess perpendicular to the opening surface of the recess. Arranged at intervals,
An actuator for an aerosol container.
The aerosol container actuator according to any one of claims 1 to 4,
The holder is integrally molded so that the entire inner surface of the recess is liquid-tightly continuous without a gap except for the ejection hole,
An actuator for an aerosol container.