CN110831871A

CN110831871A - Actuator for aerosol container

Info

Publication number: CN110831871A
Application number: CN201880043919.5A
Authority: CN
Inventors: 山科拓也; 松村敏郎; 佐藤健二; 铃木雅之
Original assignee: Mandom Corp; Maruichi Co Ltd
Current assignee: Mandom Corp; Maruichi Co Ltd
Priority date: 2018-02-23
Filing date: 2018-09-26
Publication date: 2020-02-21
Also published as: JP6994744B2; WO2019163183A1; KR20200015705A; JPWO2019163183A1

Abstract

An actuator (1) for an aerosol container comprises: spherical rolling elements (3); and a cage (4) having a recess (41) for holding the rolling element (3) so as to be capable of rolling. A valve rod connecting part (42) is arranged at the bottom of the holding frame (4), the valve rod connecting part (42) is provided with a lead-out passage (7) of the content of the aerosol container (2), the valve rod connecting part (42) is embedded in the valve rod (23), and the lead-out passage (7) is communicated with a spray hole (77) formed in the concave part (41). A plurality of spherical protuberances (81, 82) are provided on the inner surface of the recess (41) near the bottom and along the opening edge, respectively, and the spherical protuberances (81, 82) have the same height and are separated from each other. An intermediate orifice for reducing the discharge pressure of the contents is provided in the discharge passage (7). Thus, the rolling elements (3) always roll lightly, the content can be stably supplied at a constant supply amount, and the rolling elements (3) are prevented from flying out.

Description

Actuator for aerosol container

Technical Field

The present invention relates to an actuator for aerosol containers of the rolling type.

Background

Such rolling type skin external preparations are commercially available: the skin external preparation such as body odor inhibitor or sunscreen agent is applied to the skin via spherical rolling elements. According to this skin external preparation, the contents can be reliably applied to a desired site without dirtying the hands, and a massage effect can be obtained by pressing the skin. Rolling-type applicators used for such external skin preparations can be broadly classified into non-aerosol type applicators and aerosol type applicators.

In a non-aerosol type coating device, a retainer for holding a spherical rolling element so as to be capable of rolling is fitted to an opening of a container body, and the container body is tilted or shaken to supply the content to the outer surface of the rolling element. By pressing and rolling the rolling body against the skin, the content can be applied to the target site. Therefore, in order to prevent the contents from being exposed to the outside air, a member for closing the gap between the rolling element and the retainer at least when not in use is required for a non-aerosol type application tool.

On the other hand, in the aerosol type coating device, the actuator is attached to the aerosol container so as to be fitted to a stem projecting from a metal pressure container (hereinafter, referred to as "aerosol container") such as an aluminum or tin plate, and includes a spherical rolling element and a holder rotatably holding the rolling element. When the actuator presses the valve stem, the aerosol valve is opened, and the content filled in the aerosol container is ejected from the valve stem and adheres to the outer surface of the rolling body through the ejection hole provided in the retainer. By pressing and rolling the rolling body against the skin, the content can be applied to the target site.

According to the aerosol type applicator having such an actuator, since the content is prevented from being discharged by the valve of the aerosol container, it is not necessary to close the gap between the rolling element and the retainer at least when not in use, as in the case of the non-aerosol type applicator. Therefore, the degree of freedom in the design of the actuator is improved. However, such an actuator is also required to be further improved in detail to solve problems such as the following: the rolling performance of the rolling body is further improved; the ejection amount of the content is fixed to prevent dripping; or to prevent the rolling elements from flying out due to the force of the discharge, and at present, an actuator that can sufficiently satisfy these problems has not been put to practical use.

For example, patent document 1 proposes an aerosol container which is improved in durability of a component, is easy to dispose of after use, achieves a comfortable massage effect, and prevents accidental dripping. The aerosol container is provided with: a cage that holds a spherical rolling element (ball) so as to be rollable in a state in which a part of the rolling element is exposed; and a support base which engages with a valve stem protruding from the pressure-resistant container and elastically supports the rolling elements in cooperation with the holder. In the support seat, an elastic partition wall for separating the valve rod from the rolling elements is provided in a region other than a region of the discharge hole at the end of the valve rod. The elastically-dividing wall has an upwardly convex receiving surface with an arcuate cross section, and a plurality of projections are formed integrally with the elastically-dividing wall on the upper surface. According to such a configuration, the elastic partition wall elastically supports the rolling elements by the receiving surfaces and the protrusions thereof, so that a large vertical movement of the rolling elements can be ensured, a comfortable massage effect can be obtained, and an effect of preventing accidental dripping can be obtained.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2001-240163

Disclosure of Invention

Problems to be solved by the invention

In the aerosol container disclosed in patent document 1, the rolling elements are accommodated between the holder and the mount and held in a state of being capable of being moved largely in the vertical direction by elastic deformation of an elastic partition wall provided in the mount. That is, the gap between the inner surface of the cage and the outer surface of the rolling element varies in various ways according to the pressing condition of the rolling element. Therefore, the following may occur, for example, and the supply amount of the contents may vary: the content is supplied to the enlarged gap excessively, so that the content overflows from the opening edge of the holder; alternatively, when the rolling elements are strongly pressed, the elastic partition wall is largely deformed, and the gap around the discharge hole at the end of the valve stem is closed, so that the contents cannot be sufficiently supplied. Further, there is a concern that the rolling performance of the rolling elements may vary irregularly due to variations in the biasing force received from the elastic partition walls caused by the displacement of the rolling elements in the cage. If the urging force of the elastic partition walls is too strong, the rolling elements may fly out of the cage.

Further, since the retainer is molded separately from the holder using a resin material that is more easily elastically deformable than the holder, it is difficult to seal the joint between the holder and the retainer in a liquid-tight manner, and there is a possibility that dripping may occur from the gap.

The present invention has been made in view of these problems, and an object thereof is to provide an actuator for an aerosol container, comprising: the rolling elements always roll gently and quickly with a constant feeling, the content is stably supplied with a constant supply amount, and the rolling elements can be reliably prevented from flying out.

Means for solving the problems

In order to achieve the above object, an actuator for an aerosol container according to the present invention is an actuator for an aerosol container of a rolling type, having a basic configuration including: a rolling body having a spherical outer surface; and a retainer for rollably retaining the rolling body in a recess having a spherical inner surface with a part of the rolling body exposed, wherein the aerosol actuator is attached to an aerosol container filled with a content under pressure, and the aerosol actuator is configured to: the content ejected by pressing a stem protruding from the aerosol container is supplied into a recessed portion of the retainer and adheres to the outer surface of the rolling element, wherein a stem connecting portion having a discharge passage for the content is provided at the bottom of the retainer, the stem connecting portion is fitted in the stem, the discharge passage communicates with a discharge hole formed in the recessed portion, and a plurality of spherical protrusions are provided on the inner surface near the bottom of the recessed portion and the inner surface of the recessed portion along the opening edge so that the protrusions are spaced apart from each other at the same height.

According to this basic configuration, the clearance between the inner surface of the recess and the outer surface of the rolling element is kept constant throughout the entire recess by the function of the plurality of spherical protrusions provided at the same protrusion height on the inner surface near the bottom of the recess of the cage and the inner surface along the opening edge. This stabilizes the discharge amount of the content and makes the amount of the content adhering to the outer surface of the rolling element uniform. Further, since the spherical protrusions are not easily elastically deformed in the squashed direction due to their shapes, even when the rolling elements are strongly pressed, the rolling elements can be prevented from blocking the discharge holes in the recessed portions and preventing the contents from being easily discharged.

The spherical surface-shaped protrusions and the outer surfaces of the rolling elements are in point contact with each other with gentle convex curved surfaces, so that the rolling elements do not interfere with rolling, and the rolling elements smoothly roll at a constant lightness. Since the spherical bumps have no directivity, unevenness in rolling performance due to the rolling direction does not occur. The spherical surface-shaped protrusion provided along the opening edge of the recess also serves to prevent the rolling elements from flying out of the opening surface of the recess.

In the present invention, it is preferable that the spherical protuberances formed in the vicinity of the bottom of the concave portion are disposed at equal intervals on an imaginary circle centered on the discharge hole. Alternatively, it is preferable that the concave portions are arranged at equal intervals on an imaginary circle centered on an intersection point of an axis perpendicular to an opening surface of the concave portion and passing through a center of sphere of the concave portion and an inner surface of the concave portion.

Further, the actuator for an aerosol container according to the present invention has the following additional structure, and the lead-out passage is provided with: a large-diameter hole portion having an inner diameter that coincides with an outer diameter of the valve stem; a middle diameter hole portion which is smaller than the diameter of the valve rod and is connected to the large diameter hole portion via a stepped portion; a taper hole portion connected to the intermediate diameter hole portion via a stepped portion; and 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, the small-diameter hole portion being opened in the recessed portion to serve as a discharge hole.

That is, in this structure, an intermediate orifice for pressure reduction is provided in a lead-out passage connecting a valve stem provided to protrude from the aerosol container and a discharge orifice formed in the holder. The force of the contents discharged from the valve stem is weakened by the action of the intermediate orifice, and the rolling elements can be more reliably prevented from flying out.

Furthermore, the present invention adopts the following additional structure: the entire inner surface of the recess of the holder except for the discharge hole is integrally molded without a gap and in a liquid-tight continuous manner. This also prevents the contents from leaking from the recess to the inside of the actuator.

Effects of the invention

According to the actuator for an aerosol container of the present invention configured as described above, since the plurality of spherical protrusions provided on the inner surface of the recess of the cage for holding the rolling elements keep the gap between the inner surface of the recess and the outer surface of the rolling elements constant at all times, the discharge amount of the content is stable, and the amount of adhesion of the content to the outer surface of the rolling elements is uniform. Further, the rolling performance of the rolling elements is improved by the point contact of the spherical protrusions with the outer surfaces of the rolling elements. The spherical surface-shaped protrusion provided along the opening edge of the recess can prevent the rolling elements from flying out of the opening surface of the recess.

In the actuator for an aerosol container according to the present invention, the intermediate orifice for reducing the discharge pressure of the content is provided in the lead-out passage connecting the valve stem protruding from the aerosol container and the discharge hole formed in the retainer, and therefore, the rolling elements are less likely to fly out.

Drawings

Fig. 1 is an external perspective view of an actuator for an aerosol container according to a first embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of the actuator for an aerosol container.

Fig. 3 is a sectional view partially enlarged from a main portion of fig. 2.

Fig. 4 is a sectional view further enlarging a main portion of fig. 3 to show the structure of the lead-out passage.

Fig. 5 is a perspective view showing the inner surface of the retainer excluding the rolling elements of the actuator for an aerosol container.

Fig. 6 is a cross-sectional view of the actuator for an aerosol container taken along line a-a.

Fig. 7 is a cross-sectional view taken along line a-a showing a modified example of the arrangement of the spherical protrusions in the actuator for an aerosol container.

Fig. 8 is a cross-sectional view of the actuator for an aerosol container of fig. 7 taken along line B-B.

Fig. 9 is an external perspective view of an actuator for an aerosol container according to a second embodiment of the present invention.

Fig. 10 is a longitudinal sectional view of the actuator for an aerosol container.

Fig. 11 is a sectional view partially enlarged from a main portion of fig. 10.

Fig. 12 is a perspective view showing the inner surface of the retainer excluding the rolling elements of the actuator for an aerosol container.

Fig. 13 is a cross-sectional view of the actuator for an aerosol container taken along line C-C.

Detailed Description

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

(first embodiment)

Fig. 1 to 6 show an actuator for an aerosol container (hereinafter simply referred to as "actuator") according to a first embodiment of the present invention. The actuator 1 is mounted on the upper part of an aerosol container 2 filled with pressurized contents. In the following description, when the positional relationship and orientation of the parts and the components are shown, the vertical direction and the horizontal direction are determined based on the state shown in fig. 1 in which the aerosol container 2 is erected.

As shown in fig. 2, the aerosol container 2 is sealed by pressing a sealing cup 22 against the upper portion of the container body 21. A case (not shown) having an aerosol valve therein is fixed to the inner center portion of the sealing cup 22, a cylindrical valve stem 23 is inserted into the case, and the upper portion of the valve stem 23 is provided to protrude from the aerosol container 2 in a biased state. When the valve stem 23 is pressed toward the inside of the aerosol container 2, the aerosol valve is opened, and the content filled in the aerosol container 2 is discharged from the upper end opening of the valve stem 23.

The present invention is not mainly based on the detailed structures of the pressurizing mechanism and the aerosol valve of the aerosol container 2, and can be implemented by appropriately combining the conventional technical means with these parts. The contents filled in the aerosol container 2 are assumed to be, for example, a body odor inhibitor, a sunscreen agent, an anti-inflammatory analgesic agent, and the like, but the present invention is not particularly limited with respect to the type and composition of the contents.

The illustrated actuator 1 is composed of the following 4 components: a rolling body 3 having a spherical smooth outer surface; a cage 4 for holding the rolling element 3 so as to be rollable; a shoulder cover 5 that holds the cage 4 so as to be movable up and down in response to the pressing of the rolling elements 3; and a cap 6 covering the shoulder cover 5 to cover the cage 4 and the rolling elements 3.

In the holder 4, a concave portion 41 having a spherical smooth inner surface is formed to open upward. The recess 41 is integrally formed in a liquid-tight and continuous manner so that a portion of the entire inner surface excluding a discharge hole 77 described later is free from a gap. The rolling elements 3 are press-fitted into the recesses 41, and are rollably held with a part of the rolling elements 3 exposed upward.

The bottom of the holder 4 is provided with: a stem connecting portion 42 having a content discharge passage 7; a short cylindrical play insertion tube portion 43 stabilizes the vertical movement of the cage 4 caused by the pressing of the rolling elements 3. The detailed structure of the lead-out path 7 is described later.

Further, at the side portion of the holder 4, an engaging projection 44 is provided projecting downward from a 4-position portion in the circumferential direction of the holder 4, and this engaging projection 44 is used to fix the holder 4 so as not to be disengaged from the shoulder cover 5.

On the other hand, the shoulder cover 5 is provided with: a short cylindrical guide cylinder portion 51 that is attached to the play insertion cylinder portion 43 of the retainer 4 so as to be inserted from the outside, and that guides the vertical movement of the retainer 4; an inner peripheral wall portion 52 surrounding the outside of the guide cylinder portion 51; and an outer peripheral wall portion 53 that further surrounds the outside of the inner peripheral wall portion 52. The lower edge of the inner peripheral wall portion 52 is fitted and attached to the outer peripheral edge of the sealing cup 22, and the shoulder cap 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 projection 44 of the holder 4 is inserted into the engagement groove 54 and held so as to be movable up and down and not to be easily pulled out. In this state, the valve rod connecting portion 42 of the cage 4 is fitted to the valve rod 23, and the valve rod 23 is pushed in response to the pressing down of the rolling elements 3 and the cage 4.

The main parts of the present invention are the shape of the lead-out passage 7 provided in the stem connecting portion 42 of the holder 4, and the spherical protrusions 8 provided at a plurality of positions on the inner surface of the concave portion 41. Details thereof are shown in fig. 3 to 6.

As shown in fig. 3 and 4 in an enlarged manner, the lead-out passage 7 is provided with: a large-diameter hole portion 71 having an inner diameter that coincides with the outer diameter of the valve stem 23; an intermediate diameter hole 73 that is smaller than the diameter of the valve stem 23 and is connected to the large diameter hole 71 via a flat step 72 perpendicular to the axial direction of the valve stem 23; a taper hole portion 75 which is reduced in diameter upward and is connected to the intermediate diameter hole portion 73 via the stepped portion 74; and a small-diameter hole portion 76 connected to a reduced diameter end (upper end) of the tapered hole portion 75 with the same diameter, the small-diameter hole portion 76 being opened into the recess 41 to serve as a discharge hole 77.

In this way, the discharge passage 7 is formed so as to be gradually reduced in diameter, whereby the discharge pressure of the content discharged from the valve stem 23 is reduced. The 2-

step portions

72 and 74 provided perpendicular to the ejection direction function as walls against which the ejection flow collides, contributing to effective reduction of the ejection pressure. The specific diameter of the small-diameter hole portion 76, which facilitates this effect, is preferably about 0.2mm to 2.0mm, and particularly preferably about 0.3mm to 1.0 mm.

In the concave portion 41 communicating with the lead-out passage 7, a plurality of

spherical protrusions

81 and 82 are provided on the inner surface near the bottom thereof and the inner surface along the opening edge, respectively.

Each of the

spherical protrusions

81 and 82 has a smooth protrusion surface of a thin hemispherical shape (lens shape) with a circular front shape. The specific dimensions are preferably about 0.5mm to 5.0mm in diameter, particularly preferably about 1.0mm to 2.5mm, and the ridge height is preferably about 0.1mm to 1.5mm, particularly preferably about 0.2mm to 0.8 mm. All the

spherical protrusions

81 and 82 provided in plural number are preferably uniform in height, but are not limited to a diameter.

The

spherical protrusions

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

The spherical protrusions 81 provided along the opening edge of the concave portion 41 are arranged at approximately equal intervals in the circumferential direction of the opening edge, for example, about 6 pieces.

Further, the spherical ridges 82 provided near the bottom of the concave portion 41 are arranged at approximately 3 or so intervals along an imaginary circle centered on the discharge hole 77 formed at the bottommost portion. The size of the imaginary circle corresponding to the "vicinity of the bottom" is a size in which the opening angle θ expanded from the vertical axis passing through the center 45 of the concave portion 41 and the discharge hole 77 is about 4 to 20 degrees, and particularly preferably about 5 to 15 degrees.

The plurality of

spherical protrusions

81 and 82 provided on the inner surface of the recess 41 of the holder 4 in this manner function as: the gap between the inner surface of the recess 41 and the outer surface of the rolling element 3 is kept constant throughout the recess 41. By keeping the size of the gap constant, the content discharged from the discharge hole 77 passes between the

spherical protuberances

81 and 82 and spreads uniformly on the inner surface of the concave portion 41, and is appropriately attached to the outer surface of the rolling element 3. Further, since the

spherical protuberances

81 and 82 have a shape that is extremely unlikely to deform in the squashing direction, even when the rolling elements 3 are strongly pressed, such a situation can be prevented: the rolling elements 3 block the discharge holes 77 in the concave portion 41, and the contents are difficult to be discharged.

Since the

spherical protrusions

81 and 82 and the outer surfaces of the rolling elements 3 are in point contact with each other at gentle convex curved surfaces, the rolling elements 3 are not hindered from rolling, and the rolling elements 3 always roll smoothly with a certain degree of agility. Since the

spherical bumps

81 and 82 have no directivity, unevenness in rolling characteristics due to the rolling direction does not occur. The spherical surface-shaped protrusion 81 provided along the opening edge of the concave portion 41 also serves to prevent the rolling elements 3 from flying out of the opening surface of the concave portion 41.

The

spherical protrusions

81 and 82 are preferably arranged in the circumferential direction in the vicinity of the bottom and along the opening edge of the recess 41 by 3 to 9 pieces. In the case of 2 or less, the rolling elements 3 lose their stability and the rolling performance tends to deteriorate. On the other hand, when the number is 10 or more, the spherical protrusion is likely to be an obstacle when the content to be discharged spreads along the inner surface of the concave portion 41.

The

spherical protrusions

81 and 82 are preferably arranged at substantially equal intervals near the bottom and along the opening edge of the recess 41. Even if there is some deviation between the respective intervals, there is no problem, but it is preferable that they are separated from each other at least by a certain distance or more so as not to hinder the spreading of the contents.

Fig. 7 to 8 show a modified example of the arrangement of the spherical protrusions 82 provided near the bottom of the concave portion 41. The spherical protrusions 82 are arranged in 3 numbers along an imaginary circle which is double inside and outside with the discharge hole 77 as the center. The size of the inner imaginary circle is about 6 degrees from the opening angle θ 1 extending from the vertical axis passing through the center 45 of the concave portion 41 and the discharge hole 77, and the size of the outer imaginary circle is about 15 degrees from the opening angle θ 2 extending from the vertical axis. The 3 spherical protrusions are arranged at equal intervals on both the inner side and the outer side so as to form a 120-degree center angle in plan view with respect to the discharge hole 77, but the arrangement directions of the inner 3 spherical protrusions 82 and the outer 3 spherical protrusions 82 are shifted from each other by 60 degrees in plan view with respect to the discharge hole 77. The height of the spherical protrusion 82 is the same on both the inner and outer sides, but the diameter of the spherical protrusion 82 on the outer side is larger than the diameter of the spherical protrusion 82 on the inner side.

Such an arrangement is advantageous in dispersing the pressure concentrated in the vicinity of the bottom of the recess 41 by the pressing of the rolling elements 3. Further, by making the diameter of the spherical protrusion 82 near the inner side of the discharge hole 77 smaller than the diameter of the spherical protrusion 82 on the outer side, it is not easy to become an obstacle when the content discharged from the discharge hole 77 spreads.

(second embodiment)

Fig. 9 to 13 show an actuator 1 according to a second embodiment of the present invention. Since the actuator 1 is attached to the aerosol container 2 in the same manner as the actuator of the first embodiment, the description of the aerosol container 2 will be omitted. Note that the same reference numerals are given to the same components having the same functions and actions as those of the first embodiment, and the description thereof is simplified.

As in the first embodiment, the actuator 1 includes: a rolling element 3 having a spherical outer surface; a cage 4 that holds the rolling elements 3 so as to be rollable in a state in which a part of the rolling elements 3 is exposed in a recess 41 having a spherical inner surface; and a shoulder cover 5 that holds the cage 4 so that the cage 4 can move up and down in response to the pressing of the rolling elements 3, but differs from the first embodiment in that the recess 41 of the cage 4 opens diagonally upward. Specifically, the opening surface of the recess 41 of the holder 4 is inclined at 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 erected.

The shaft portion 47 of the hinge arm 46 protruding outward of the retainer 4 is pivotally attached to the hinge receiving portion 55 provided inside the inner peripheral wall portion 52 of the shoulder cover 5, whereby the retainer 4 is held so as to be swingable in the vertical direction. In this state, the 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 pressed in response to the pressing down of the rolling elements 3 and the holder 4. The detailed configuration of the lead-out passage 7 provided in the stem connecting portion 42 is the same as that of the first embodiment (fig. 4).

The holder cover 9 is attached to the upper portion of the shoulder cover 5 so as to surround the outside of the holder 4 having the oblique opening. The cap 6 covers the cage cover 9 and covers the exposed portion of the rolling element 3.

In this actuator 1, too, a plurality of

spherical protrusions

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

spherical protrusions

81 and 82 is slightly different from that of the first embodiment in view of the relationship that the concave portion 41 of the retainer 4 opens obliquely upward. The shape and size of the

spherical protuberances

81, 82 are common to the first embodiment.

At the opening edge of the inclined concave portion 41, for example, about 6 spherical protrusions 81 are arranged at substantially equal intervals along the opening edge. The spherical protrusions 82 provided near the bottom of the concave portion 41 are arranged at approximately equal intervals of, for example, about 3 along an imaginary circle centered on the discharge hole 77 formed at the bottommost portion, not along an imaginary circle centered on an intersection point 48 that is perpendicular to the opening surface of the concave portion 41 and passes through the axis of the spherical center 45 of the concave portion 41 and the inner surface of the concave portion 41. In this embodiment, the size of the virtual circle is also a size in which an opening angle θ extending from an axis passing through the center 45 of the concave portion 41 and the intersection 48 is about 4 to 20 degrees, and particularly preferably about 5 to 15 degrees.

According to such an embodiment, since the clearance between the inner surface of the recess 41 of the cage 4 and the outer surface of the rolling element 3 is also kept constant, the discharge amount of the content is stable, and the spread on the outer surface of the rolling element 3 is good. Further, the rolling performance of the rolling elements 3 is improved, and the rolling elements 3 can be further prevented from flying out of the opening surface of the concave portion 41.

Although 2 embodiments of the present invention have been described above, the technical scope of the present invention should not be construed in a limited manner by the illustrated embodiments, but should be conceptually construed according to the description of the claims. In carrying out the present invention, the shape, structure, positional relationship, joining manner, and the like of the components (parts) not specifically defined in the claims can be appropriately changed without departing from the scope of the present invention.

Description of the reference symbols

1: an actuator; 2: an aerosol container; 21: a container body; 22: sealing the cup body; 23: a valve stem; 3: a rolling body; 4: a holder; 41: a recess; 42: a valve stem connecting portion; 43: a play insertion cylinder portion; 44: a snap-fit protrusion; 45: a spherical center; 46: a hinge arm; 47: a shaft portion; 48: a point of intersection; 5: a shoulder cover; 51: a guide cylinder part; 52: an inner peripheral wall portion; 53: an outer peripheral wall portion; 54: a clamping groove; 55: a hinge receiving portion; 6: a cap; 7: a lead-out path; 71: a large-diameter hole portion; 72: a step portion; 73: a middle diameter hole part; 74: a step portion; 75: a taper hole portion; 76: a small-diameter hole portion; 77: an ejection hole; 81: a spherical bulge; 82: a spherical bulge; 9: a cage cover.

Claims

1. An actuator for an aerosol container, which is a rolling-type actuator for an aerosol container, comprising:

a rolling body having a spherical outer surface; and

a cage for rollably retaining the rolling element in a recess having a spherical inner surface in a state in which a part of the rolling element is exposed,

the actuator for an aerosol container is mounted to an aerosol container pressurized with contents,

the actuator for an aerosol container is configured to: the content ejected by pressing a valve stem protruding from the aerosol container is supplied into the concave portion of the retainer and adheres to the outer surface of the rolling element,

it is characterized in that the preparation method is characterized in that,

a valve rod connecting part having a discharge passage for the content is provided at the bottom of the holder,

the valve rod connecting part is embedded in the valve rod, and,

the lead-out passage communicates with a spouting hole formed in the recess,

a plurality of spherical protuberances are provided on the inner surface of the recess near the bottom and along the opening edge so as to be spaced apart from each other at a uniform height.

2. An actuator for an aerosol container according to claim 1,

the lead-out path is provided with:

a large-diameter hole portion having an inner diameter that coincides with an outer diameter of the valve stem;

a middle diameter hole portion which is smaller than the diameter of the valve rod and is connected to the large diameter hole portion via a stepped portion;

a taper hole portion connected to the intermediate diameter hole portion via a stepped portion; and

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,

the small-diameter hole portion is opened in the concave portion to be a discharge hole.

3. An actuator for an aerosol container according to claim 1 or 2,

the spherical protuberances formed near the bottom of the concave portion are arranged at equal intervals along an imaginary circle having the discharge hole as a center.

4. An actuator for an aerosol container according to claim 1 or 2,

the spherical protuberances formed near the bottom of the recessed portion are disposed at equal intervals along an imaginary circle centered on an intersection point of an axis perpendicular to the opening surface of the recessed portion and passing through the center of the sphere of the recessed portion and the inner surface of the recessed portion.

5. An actuator for an aerosol container according to any one of claims 1 to 4,

the retainer is integrally formed in the following manner: the entire inner surface of the recess is continuous liquid-tightly without a gap except for the ejection hole.