JP2024033615A - Content release mechanism and aerosol product equipped with this content release mechanism - Google Patents

Abstract

An object of the present invention is to facilitate the replacement of containers in any residual state in a content discharge mechanism that is individually equipped with a content container that accommodates content to be discharged and a propellant container that accommodates a propellant. SOLUTION: A propellant outflow valve 2b of a propellant container 1, a propellant inflow valve 5b of a content container 3, a content outflow valve 5c of a content container 3, a downstream side of the propellant outflow valve 2b, and an injection A connecting passage A that communicates with the upstream side of the propellant inflow valve 5b, a discharge passage B that continues with the downstream side of the content outflow valve 5c and the external space area, and a connecting passage A that communicates with the downstream side of the propellant outflow valve 2b. A propellant side attachment/detachment part C, and a content side attachment/detachment part D between the connection passage A and the upstream side of the content outflow valve 5c and between the downstream side of the content outflow valve 5c and the discharge passage B were provided. When the propellant side attachment/detachment part C and the content side attachment/detachment part D are attached, the propellant outflow valve 2b, the propellant inflow valve 5b, and the content outflow valve 5c are opened by the content release operation using the operating lever 8. It was made to be in a state where things are released. [Selection diagram] Figure 2

Description

The present invention relates to a content release mechanism in which a container containing content to be released can be attached to and removed from a content release operation mechanism.

In particular, it relates to a content release mechanism in which the content and its propellant are housed in separate containers.

In this specification, for convenience of explanation, the direction in which the contents are injected into the external space area, that is, the left direction in FIGS. 1, 2, and 4 to 10, and the lower left direction in FIG. The opposite direction is called "backward."

BACKGROUND ART Conventionally, a content release mechanism has been proposed in which a content and its propellant are housed in separate containers, and the two are integrated by a content release operation (see Patent Documents 1 and 2).

In this content discharge mechanism, the propellant flowing out from the propellant container is introduced into the content container, and the content is pushed out of the content container by the jetting action and is discharged from the discharge port into the external space area.

Here, in order to prevent the contents from leaking from the contents container when not in use, a valve is provided between the contents container and the discharge port, and is brought into an open use state based on the contents discharge operation.

Since the contents and propellant are stored in separate containers, you can use up the contents and propellant to the end by replacing only the one that is used up first. That's what I do.

Japanese Patent Application Publication No. 11-262703 Japanese Patent Application Publication No. 2007-062777

However, these content discharging mechanisms have a problem in that it is not easy to remove the content container and the propellant container from the content discharging operation mechanism while keeping the content or propellant contained therein.

In Patent Document 1, the liquid container 1 (content container) removed from the contents release mechanism is in an open state, and the contents of the liquid container cannot be stored unless a lid is separately prepared to close it.

Furthermore, in Patent Document 2, since the gas container valve 20 of the gas container main body 11 (propellant container) attached to the cap 28 is always open, when the content container is removed from the push button 60, the gas inside the button Since the propellant is ejected from the passage 61, it was first necessary to remove the gas container main body 11 (propellant container) to release the flow of the propellant into the push button 60.

Therefore, it is not easy and complicated to change to another type during use without using up the released contents.

Therefore, an object of the present invention is to provide a valve on the container side of each attachment/detachment part that is linked with the content release operation, thereby facilitating container replacement when the content container and propellant container are in any remaining state. shall be.

The present invention solves the above problems as follows.

(1) Individually equipped with a content container (e.g., content containers 3, 43 described below) that accommodates the contents to be released and a propellant container (e.g., propellant containers 1, 40, described later) that accommodates a propellant. , a content release mechanism that releases the content into an external space area by the action of the propellant based on a content release operation,
a propellant outflow valve (for example, a propellant outflow valve 2b described below) provided in the propellant container;
a propellant inflow valve (for example, propellant inflow valves 5b and 45b described below) provided in the content container;
A content outflow valve (for example, content outflow valves 5c and 45c described below) provided in the content container;
a connection passage (for example, connection passages A and E described below) that communicates the downstream side of the propellant outflow valve and the upstream side of the propellant inflow valve;
a discharge passage (for example, discharge passages B and F described below) that continues downstream of the content outflow valve and the external space area;
a first attachment/detachment portion (for example, propellant side attachment/detachment portions C and G described below) provided between the downstream side of the propellant outflow valve and the connection passage;
A second attachment/detachment part (for example, a content side attachment/detachment part D, H described later) provided between the connection passage and the upstream side of the content outflow valve and between the downstream side of the content outflow valve and the discharge passage. ) and,
By the content release operation with the first attachment/detachment part and the second attachment/detachment part in the attached state, the propellant outflow valve, the propellant inflow valve, and the content outflow valve are each in an open content release state. Become,
Use the configuration mode.
(2) In (1) above,
The connection passage is
Equipped with a pressure relief valve (for example, a thin wall portion 11a and a relief valve 12b, which will be described later) that communicates with the outside of the connection passage when the internal pressure of the connection passage exceeds a predetermined value.
Use the configuration mode.
(3) In (1) and (2) above,
The pressure relief valve has a part of the fitting part of the connection passage made thin so that it can be deformed.
Use the configuration mode.
(4) In (1) to (3) above,
The content container is
A content stem (for example, stem 45a described below) that opens a propellant inflow valve and a content outflow valve when pushed in,
The propellant container includes:
A propellant stem (for example, stem 41a described below) that opens the propellant outflow valve when pushed in,
The content stem and the propellant stem are connected to a passage member (e.g., propellant button 50, described below) with the connection passage (e.g., connection passage E, described below) and the discharge passage (e.g., discharge passage F, described below). The content container and the propellant container are arranged in such a manner that they face each other with an object button 51) in between.
Use the configuration mode.
(5) In (1) to (4) above,
The content container is
A bag body (for example, a bag body 22 described below) connected to the upstream side of the content outflow valve is accommodated,
A downstream side of the propellant inflow valve communicates with an outer peripheral side of the bag body,
Use the configuration mode.
(6) In (1) to (5) above,
The connection passage is equipped with a regulator (for example, a regulator 31 described below) that adjusts the flow rate of the propellant.
Use the configuration mode.

The object of the present invention is a content release mechanism having such a configuration and an aerosol type product equipped with the content release mechanism.

By adopting the above configuration, the present invention has the following features:
Facilitation of container replacement in any residual state of the content container and propellant container, respectively.
can be achieved.

FIG. 2 is an explanatory diagram showing a content release mechanism including a propellant container and a content container individually when the content release mechanism is not in use. FIG. 2 is an explanatory diagram showing an outline of the release route of the content release mechanism of FIG. 1; FIG. 2 is an explanatory diagram showing the container attachment/detachment relationship of the contents release mechanism of FIG. 1; FIG. 2 is an explanatory diagram showing an ejection state of the content discharge mechanism of FIG. 1; FIG. 4 is an explanatory diagram showing the contents valve of FIG. 3; FIG. 2 is an explanatory diagram showing a content release mechanism using a relief valve in place of the thin-walled portion of FIG. 1; FIG. 2 is an explanatory diagram showing a contents release mechanism of a double container in which a bag is housed in place of the contents container of FIG. 1; It is an explanatory view showing a contents release mechanism provided with a regulator for propellant adjustment. FIG. 2 is an explanatory diagram showing a content discharge mechanism in which propellant containers are arranged vertically in an inverted state above a content container. FIG. 10 is an explanatory diagram showing an ejection state of the content discharge mechanism of FIG. 9;

DESCRIPTION OF THE PREFERRED EMBODIMENTS A mode for carrying out the present invention will be described using FIGS. 1 to 10.

Note that the constituent elements indicated by the following alphabetical reference symbols (for example, stem 2a) are in principle part of the constituent elements indicated by the numerical part of the reference symbol (for example, propellant valve 2).

Here, in FIGS. 1 to 7,
1 is a propellant container containing a propellant for discharging the contents into an external space;
2 is a propellant valve provided at the upper end of the propellant container 1;
2a is a stem that communicates with the inside of the propellant container 1 and allows the propellant to flow out from the upper opening when pushed down against the biasing force;
2b is a propellant outflow valve that opens when the stem 2a is pushed down and communicates between the inside of the propellant container 1 and the inside of the stem 2a;
3 is a content container containing the content to be released;
4 is a cap screwed onto the upper end opening of the content container 3;
4a is a convex portion that engages with a hole of a stopper 7c, which will be described later;
5 is a content valve that is engaged and fixed to the inner ceiling of the cap 4;
5a consists of a double inner and outer cylindrical part, and by pushing down against the biasing force, the upper central opening communicates with a suction pipe 6, which will be described later, and the upper annular opening communicates with the inside of the propellant container 1. stem,
5b is a propellant inflow valve that opens when the stem 5a is pushed down and communicates the upper space inside the content container 3 with the outer peripheral space inside the stem 5a;
5c is a content outflow valve which is opened by pushing down the stem 5a and communicates the inside of the suction pipe 6 and the central space inside the stem 5a, which will be described later;
6 is a suction pipe having one end connected to the content valve 5 and the other end disposed near the bottom of the content container 3;
7 is a container holder in which the propellant container 1 and the content container 3 are held;
7a is a propellant container case which is screwed and fixed to the main body of the container holder 7, houses the propellant container 1, and also functions as a user's grip;
7b is a guide portion that guides a propellant passage 11 (described later) in a vertically displaceable manner and holds a propellant button 9 (described later) and a content button 10 (described later) from falling off the container holder 7;
7c is a seesaw type, which is provided in such a manner that the periphery is separated except for the two connecting portions at the front and back, and is swingable with this connecting portion as the center of rotation, and has a hole in which the convex portion 4a is engaged. Stopper (see Figure 3),
8 is an operating lever rotatably engaged with the container holder 7 and pressed down by the user during the content release operation;
8a is a rear concave portion that comes into contact with the propellant button 9 and is driven downward during the content discharge operation;
8b is a front concave portion that comes into contact with the content button 10 and is driven downward during the content release operation;
9 is a propellant button that fits into the upper end of the stem 2a of the propellant valve 2;
A pair of cylindrical shafts 9a are provided on the propellant button 9 in a manner that projects left and right, and are driven by contacting the rear concave portion 8a;
10 is a content button that fits into the upper end of the stem 5a of the content valve 5;
10a is a pair of cylindrical shafts that are provided on the content button 10 in a manner that projects left and right and are driven by contacting the front concave portion 8b;
10b is an injection port through which the contents are discharged into the external space;
10c is a groove portion 10c (see FIG. 5) provided in a portion that fits into the outer periphery of the outer cylindrical portion of the stem 5a;
11 is a propellant passage that communicates the downstream side of the propellant button 9 and the upstream side of the content button 10;
11a is a thin walled portion that deforms when the pressure inside the propellant passage exceeds a predetermined value and causes the propellant inside the passage to leak into the external space from the connection part with the content button 10;
A passes through the inside of the propellant button 9, the propellant passage 11, and the content button 10 from the fitting part between the propellant button 9 and the stem 2a (propellant side attachment/detachment part C described later), and the content is A connection passage leading to a fitting part between the button 10 and the stem 5a (content side attachment/detachment part D to be described later),
B is a discharge passage that passes through the inside of the content button 10 from the fitting part between the content button 10 and the stem 5a (content side attachment/detachment part D) and reaches the injection port 10b;
C is a propellant side attachment/detachment part that fits air-tightly and liquid-tightly between the propellant button 9 and the stem 2a;
D is a content side attachment/detachment part that fits airtightly and liquidtight between the content button 10 and the stem 5a;
are shown respectively.

Also, in FIG. 6,
12 is a propellant button that engages with the upper end of the stem 5a of the content valve 5;
A pair of cylindrical shafts 12a are provided in a manner to protrude left and right and are driven by contacting the front concave portion 8b;
12b is a relief valve that moves against the bias of a spring when the pressure in the internal passage of the propellant button 12 exceeds a predetermined value, and communicates the internal passage with the external space area to release the pressure;
13 is a propellant passage that communicates the downstream side of the propellant button 12 and the upstream side of the content button 10;
are shown respectively.

Also, in FIG.
20 is an outer content container accommodating a bag 22 to be described later to constitute a double container;
21 is a content valve whose upstream side can be connected to a joint 22a described later;
21a is a stem that communicates with the inside of the propellant container 1 and allows the propellant to flow out from the upper opening when pushed down against the biasing force;
22 is a bag housed in the outer content container 20;
22a is a joint provided at the upper edge of the bag body 22 for taking out the contents;
22b is a suction pipe connected to the joint 22a inside the bag body 22;
are shown respectively.

Also, in FIG.
30 is a propellant button that accommodates a regulator unit 31 to be described later and serves as a substitute for the propellant button 9;
31 is a known regulator unit that adjusts the flow rate of propellant;
are shown respectively.

Moreover, in FIGS. 9 and 10,
40 is a propellant container containing a propellant for discharging the contents into an external space;
41 is a propellant valve provided at the upper end of the propellant container 40;
41a is a stem that opens the propellant outflow valve by pushing down against the biasing force, communicates with the inside of the propellant container 40, and allows the propellant to flow out from the upper end opening;
42 is a vent pipe having one end connected to the propellant valve 41 and the other end disposed near the upper space area of the propellant container 40 where the vaporized propellant stays;
43 is a content container containing the content to be released;
44 is a cap screwed onto the upper end opening of the content container 3;
45 is a content valve that is engaged and fixed to the inner ceiling of the cap 44;
45a consists of an inner and outer double cylindrical part, and by pushing down against the urging force, the upper end center opening communicates with a suction pipe 46 described later, and the upper end annular opening communicates with the inside of the propellant container 1. stem,
45b is a propellant inflow valve that opens when the stem 45a is pushed down and communicates the upper space inside the content container 43 with the outer peripheral space inside the stem 45a;
45c is a content outflow valve that opens when the stem 45a is pressed down and communicates the inside of the suction pipe 46 and the central space inside the stem 45a, which will be described later;
A suction pipe 46 has one end connected to the content valve 45 and the other end disposed near the bottom of the content container 43;
47 is a container holder in which the content container 3 is held;
47a is a pair of cylindrical protrusions that protrude left and right from a wall portion 47b, which will be described later, and engages with a recess of an operating lever 49, which will be described later, to serve as the center of rotation;
47b is a wall portion provided in an upright manner surrounding the left, right and rear sides of the holding portion of the cap 44 of the content container 3;
47c is a bulge provided on the left and right sides of the upper part of the wall portion 47b and guides a lid portion 48a, which will be described later, on its inner surface;
47d is a C-shaped cross-sectional upright portion that guides and holds the vertical passage portion of the content button 51, which will be described later, in a vertically movable manner;
47e is a guide portion that guides the horizontal passage portion of the content button 51 in a vertically displaceable manner and holds the content button 51 so that it does not fall off the container holder 47;
48 is a propellant container case that is guided and held by the bulging portion 47c of the container holder 47 and accommodates the propellant container 40;
48a is a lid part that allows the case body to be attached and detached by screwing;
48b is provided on the lid part 48a in a manner to protrude from side to side, and the front and rear planes are guided by vertical grooves (not shown) on the inner surface of the bulging part 47c, so that the container holder 47 and the lid part 48a are connected when the lid part 48a is attached or removed. a pair of U-shaped cross-sectional shafts that prevent relative rotation with the shaft and that are driven in the vertical direction with the upper curved surface abutting a concave portion 49a to be described later;
49 is a trigger-operated operating lever that is rotatably engaged with the container holder 47 and whose front lower end can be pulled down by the user when discharging the contents;
49a is a concave portion that comes into contact with the U-shaped cross-section shaft 48b of the propellant container case and is driven downward during the content discharge operation;
50 is a propellant button that fits into the lower end of the stem 41a of the propellant valve 41;
51 is a content button that fits into the upper end of the stem 45a of the content valve 45;
51a is an injection port through which the contents are discharged into the external space;
are shown respectively.
E passes through the inside of the propellant button 50 and the content button 51 from the fitting part of the propellant button 50 and the stem 41a (propellant side attachment/detachment part G), and connects the content button 51 and the stem 45a. A connection passage leading to the fitting part (content side attachment/detachment part H),
F is a discharge passage that passes through the inside of the content button 51 from the fitting part between the content button 51 and the stem 45a (content side attachment/detachment part H) to the injection port 51a;
G is a propellant-side attachment/detachment part that fits air-tightly and liquid-tightly between the propellant button 50 and the stem 41a;
H is a content-side attachment/detachment part that fits air-tightly and liquid-tightly between the content button 51 and the stem 45a;
are shown respectively.

Here, the housing of the propellant valve 2, the stem 2a, the cap 4, the housing of the content valve 5, the internal collar of the content valve 5, the stem 5a, the suction pipe 6, the container holder 7, the operating lever 8, Propellant button 9, content button 10, propellant passage 11, propellant button 12, housing of content valve 21, internal collar of content valve 21, stem 21a, joint 22a, suction pipe 22b , housing of the propellant valve 41, stem 41a, vent pipe 42, cap 44, housing of the content valve 45, internal collar of the content valve 45, stem 45a, suction pipe 46, container holder 47, propellant The container case 48, the operating lever 49, the propellant button 50, and the contents button 51 are made of plastic, such as polypropylene, polyethylene, polyacetal, nylon, polybutylene terephthalate, or the like.

Further, the propellant container 1, the contents container 3, the outer contents container 20, the propellant container 40, and the contents container 43 are made of plastic, metal, or glass, for example, and the propellant valve 2, the contents container The springs of the propellant valve 5, the contents valve 21, the relief valve 12b, the regulator unit 31, the propellant valve 41, and the contents valve 45 are made of, for example, plastic or metal, and the propellant valve 2, The inner and outer gaskets, the relief valve 12b, and the O-ring on the downstream side of the regulator unit 31 are made of rubber or elastomer, respectively. be.

FIG. 1 shows a content release mechanism with a propellant container 1 and a content container 3, respectively, in a non-use state.

The propellant container 1 contains a propellant, and a propellant valve 2 is attached to prevent the contents from leaking.

Moreover, the content container 3 is in a state in which the content is accommodated, and a cap 4, a content valve 5, and a suction tube 6 are attached to prevent the content from leaking.

The stem 2a of the propellant valve 2 has a cylindrical portion, and the inside of the cylindrical portion communicates with the downstream side of the propellant outflow valve 2b. Note that the upstream side of the propellant outflow valve 2b communicates with the inside of the propellant container 1.

The stem 5a of the content valve 5 has a double cylindrical part, and has a central passage inside the inner cylindrical part and an annular passage between the inner and outer cylindrical parts, and the central passage is the content outlet valve 5c. The annular passage communicates with the upstream side of the propellant inflow valve 5b.

The downstream side of the propellant inflow valve 5b communicates with the inside upper side of the content container 3 through a hole in the outer peripheral surface of the housing of the content valve 5, and the upstream side of the content outflow valve 5c communicates with the inside of the content container 3 via a suction pipe 6. It communicates with the lower part of the interior of the content container 3 where the content is present.

The propellant valve 2 and the content valve 5 bias the stem 2a and stem 5a upward by springs provided inside each, and the propellant outflow valve 2b, the propellant inflow valve 5b, and the content outflow The valve 5c is closed.

The stem 2a of the propellant valve 2 and the propellant button 9 fit together as a propellant side attachment/detachment part C, and the stem 5a of the content valve 5 and the content button 10 fit together as a content side attachment/detachment part D. They are mated. Both ends of the propellant passage 11 provided between these are fitted into the propellant button 9 and the contents button 10, respectively.

The fitting portion of the content button 10 with the stem 5a has a large diameter portion that fits on the outer periphery of the outer cylindrical portion of the stem 5a, and a small diameter portion that fits on the outer periphery of the inner cylindrical portion of the stem 5a. Like the stem 5a, it has a central passage and an annular passage, and when the contents button 10 and the stem 5a are fitted, the central passages and the annular passages communicate independently with each other.

From the fitting part of the propellant button 9 with the stem 2a, it passes through the interior of the propellant button 9, the propellant passage 11 and the content button 10, and the fitting part of the content button 10 with the stem 5a. A connecting passage A is connected to the annular passage. Further, a discharge passage B is formed from the central passage of the fitting part of the content button 10 with the stem 5a to the injection port 10b.

In the propellant side attachment/detachment section C, the inner passage of the stem 2a is connected to the connection passage A. In addition, in the contents side attachment/detachment part D, the central passage of the stem 5a, that is, the passage on the side of the contents outflow valve 5c, is connected to the discharge passage B, and the annular passage of the stem 5a, that is, the passage on the side of the propellant inflow valve 5b, is connected to the connection passage A. has been done.

The operating lever 8 is engaged with a hole in the container holder 7, with a pair of cylindrical sections provided on the front side serving as rotation axes.

Further, the operating lever 8 is held with its front concave portion 8b in contact with the upper side of the cylindrical shaft 10a of the content button 10. Note that the rear concave portion 8a and the cylindrical shaft 9a of the propellant button 9 are spaced apart from each other.

FIG. 2 schematically shows the aforementioned release path in FIG.

FIG. 3 shows the attachment/detachment relationship between the propellant container 1 and the content container 3 of the content discharge mechanism.

To install the propellant container 1, the propellant container 1 is housed in the propellant container case 7a and then screwed onto the rear lower side of the container holder 7. At this time, the stem 2a fits into the propellant button 9.

To remove the propellant container 1, remove the propellant container case 7a from the container holder 7, pull out the propellant container 1 downward, and remove the stem 2a from the propellant button 9.

To attach the content container 3, insert the content container 3 into the front lower side of the container holder 7. At this time, the stem 5a is fitted into the content button 10, and the convex portion 4a of the cap 4 is locked into the hole of the stopper 7c from the inside.

To remove the contents container 3, push in the upper side of the stopper 7c to move its hole outward, release the locking of the convex portion 4a of the cap 4, and then pull out the contents container 3 downward to remove the contents. Remove the stem 5a from the button 10.

The stopper 7c can be elastically rotated by the connection with the container holder 7, and when the push-in is released, the stopper 7c returns to a state in which it can lock the protrusion 4a.

The range of movement of the propellant button 9, content button 10, and propellant passage 11 is regulated by a pair of guide portions 7b provided to sandwich them. Since the upper ends of the guide portions 7b face each other at a narrower interval than the propellant passages 11, the propellant passages 11 come into contact with them and cannot move any further.

Therefore, even if the propellant container 1 and the content container 3 are not attached, the propellant button 9, the content button 10, and the propellant passage 11 will not fall off from the container holder 7.

In the unused state shown in FIG. 1, the propellant inflow valve 5b, the contents outflow valve 5c, and the propellant outflow valve 2b are closed, so that the propellant container 1 and its contents are prevented from leaking out. Each container 3 can be freely removed.

Note that a cover body for protecting the stem 2a and stem 5a can be attached to the propellant container 1 and content container 3 in a removed state.

4 and 5 show the ejection state of the content release mechanism. FIG. 5 shows an enlarged view of the contents valve 5 in this injection state.

When the rear part of the operating lever 8 is pushed down by the content release operation from the state shown in FIG. 10, the entire propellant passage 11 and propellant button 12 move downward.

At the same time, the stem 5a fitted to the content button 10 and the stem 2a fitted to the propellant button 12 are pushed down against the bias, respectively, and the propellant inflow valve 5b, content outflow valve 5c and The propellant outflow valve 2b is opened.

Then, the propellant in the propellant container 1 is "propellant outflow valve 2b - inside of stem 2a - inside of propellant button 12 (connection passage A) - inside of propellant passage 11 (connection passage A) - for contents". Flows into the upper space area of the content container 3 through the inside of the button 10 (connection passage A), the cylindrical passage of the stem 5a, the propellant inflow valve 5b, and the hole on the lower outer periphery of the content valve 5. do.

Due to the inflow of the propellant, the inside of the content container 3 is pressurized, pressure is applied to the liquid level of the contained content, and the content is transferred from the inside of the suction pipe 6 to the lower end of the content valve 5. It is discharged from the injection port 10b into the external space through the side interior, the content outflow valve 5c, the central passage of the stem 5a, and the interior of the content button 10 (discharge passage B).

Next, when the depression of the operating lever 8 is released to stop the discharge, the content button 10, the propellant passage 11, and the propellant button 12 move upward due to the restoring force of the stem 2a and the stem 5a, and the cylindrical shaft 10a and the cylindrical shaft 12a return the operating lever 8 to the position when not in use.

Then, by the return of the stem 2a and the stem 5a, the propellant inflow valve 5b, the content outflow valve 5c, and the propellant outflow valve 2b are closed, and the discharge of the content from the injection port 10b is stopped, as shown in FIG. Return to state.

Each valve is designed to prevent the stem 5a from coming off from the content button 10 due to pressure applied to the content attachment/detachment part D by the action of the propellant from the connection passage A at the start of the content release operation. At this time, the propellant inflow valve 5b and the content outflow valve 5c are first opened, and then the propellant outflow valve 2b is opened. In addition, in order to reduce the residual pressure in the connection passage A after the content discharge operation is completed, when returning from the operation, the propellant outflow valve 2b is first closed to release the pressure in the connection passage A to the discharge passage B, and then the injection is performed. The agent inflow valve 5b and the content outflow valve 5c are brought into a closed state.

In addition, when prioritizing good moderation in starting and stopping the content discharge, each valve should be set such that the content outflow valve 5c is the last to open during the content discharge operation, and the return from the operation is controlled. In some cases, it may be set to the closed state first.

Note that after the discharge of the contents has stopped, the propellant remains in the connecting passage A while maintaining pressure. In this state, when the ambient temperature rises and the remaining propellant expands, and the pressure in the connecting passage A increases to a predetermined value, the thin wall portion 11a of the propellant passage 11 receives the pressure and contacts the inside. By separating from the rear cylindrical portion of the object button 10 and letting the expanded propellant escape from the gap into the external space area, damage to the content release mechanism can be prevented.

This predetermined value must be above the pressure necessary to release the contents, but below the pressure that will not cause deformation or cracking of each member constituting the connection passage A, or dislodgement or loosening of each fitting part even if maintained for a long period of time. Set.

In addition, when the content container 3 is removed at the fitting part with the stem 5a of the content button 10 (content attachment/detachment part D) with the propellant remaining in the connection passage A, the inner side of the stem 5a The connecting passage A communicates with the groove 10c (see Fig. 5) before the small-diameter fitting part that is in close contact with the outer periphery of the cylindrical part is released, and the propellant in the connecting passage A flows outside through the groove 10c. released into the spatial region. After that, the inner cylindrical part of the stem 5a is released, so that the propellant in the connecting passage A directly flows into the discharge passage B under its pressure and is unintentionally discharged from the injection port 10b together with the remaining contents. Never.

The groove portion 10c may be omitted. In this case, when the content container 3 is removed at the fitting part with the stem 5a of the content button 10 (content attachment/detachment part D) with the propellant remaining in the connection passage A, the content container 3 is removed from the stem 5a. The small-diameter fitting portion that is in close contact with the outer periphery of the inner cylindrical portion is disengaged earlier than the large-diameter fitting portion that is in close contact with the outer periphery of the outer cylindrical portion of the stem 5a, and the propellant remaining in the connecting passage A is removed. With that pressure, it directly flows into the discharge passage B and is discharged from the injection port 10b together with the remaining contents. Since the fitting of the outer cylindrical portion of the stem 5a is then released, if the contents are different after replacement, mixing of the remaining contents in the discharge passage B can be reduced.

FIG. 6 shows a contents release mechanism including a relief valve 12b using a moving valve body instead of the thin wall portion 11a.

In FIG. 6, a propellant button 12 is used in place of the propellant button 9 in FIG. 1, and the propellant button 12 has the same function as the propellant button 9 except that it is provided with a relief valve 12b. ing. Further, instead of the propellant passage 11 in FIG. 1, a propellant passage 13 having no thin wall portion 11a is used.

When the pressure in the connection passage A increases to a predetermined value, the relief valve 12b receives pressure through the hole provided in the connection passage A of the propellant button 12, and the relief valve 12b closes against the bias of the spring. The contents release mechanism can be prevented from being damaged by separating from the hole and allowing the expanded propellant to escape into the external space.

By making the relief valve 12b and the spring that biases it an independent component, it is possible to reduce variations in the pressure at which the relief valve is opened from a predetermined value.

FIG. 7 shows a content release mechanism including a double container containing a bag 22 instead of the content container 3.

In FIG. 7, an outer content container 20, a content valve 21, and a bag body 22 are used in place of the content container 3, content valve 5, and suction pipe 6 of FIG. 1, and the content valve 21 is located at the lower end. It has the same function as the contents valve 5 except that the section is extended.

The bag body 22 is formed into a bag shape by thermally welding the periphery of a plastic film that does not allow the contents or the propellant to pass through together with the joint 22a, and the contents are housed inside the bag body 22.

In this jetting state of the contents discharge mechanism, the propellant from the connecting passage A flows into the space between the outer contents container 20 and the bag body 22 and compresses the bag body 22. The contents stored in the bag body 22 then flow into the contents valve 21 through the joint 22a from the gap below the joint 22a and the lower end of the suction pipe 22b, and as in FIG. It is discharged through the button 10 into the external spatial area.

Since the propellant and the contents do not come into contact with each other, they are used when the contents change in quality due to contact, or when problems arise when the propellant dissolves in the contents.

FIG. 8 shows a content release mechanism with a regulator unit 31 for propellant regulation.

In FIG. 8, a propellant button 30 equipped with a regulator unit 31 for constantizing the flow rate of the propellant is used in place of the propellant button 9 of FIG. It has the same function as the propellant button 9, except that it has the same function as the propellant button 9. Note that the regulator unit 31 is disclosed in International Publication No. 2007/034564.

The inflow side of the regulator unit 31 is fitted into the stem 2a (propellant side attachment/detachment part C), and the outflow side of the regulator unit 31 is connected to the outflow side passage of the propellant button 30 with a sealing O-ring in between. There is.

Since the propellant passing through the connecting passage A becomes constant, the state of the contents discharged from the injection port 10b is stabilized, and excess propellant does not leak out from the thin wall portion 11a and be wasted.

9 shows a content discharging mechanism in which propellant containers 40 are vertically arranged above a content container 43 in an inverted state, unlike the content discharging mechanisms shown in FIGS. 1 to 8.

Since the center of gravity of this content release mechanism is placed near the user's grip in the vertical direction, there is no tendency for the content release mechanism to tilt forward due to the weight of the content, which occurs in the content release mechanisms shown in FIGS. 1 to 8. In addition, the rear projecting portion of the wall portion 47b rests on the base of the thumb and index finger of the user, thereby preventing them from sliding downward, thereby eliminating the need for a large gripping force on the part of the user.

Similarly, since the center of gravity can be easily set near the center of the bottom surface of the content container 43, the content discharge mechanism can be stably stored vertically on a horizontal surface.

By arranging the stems 41a and 45a close to each other to face each other, the volume of the connecting passage E is reduced, reducing residual propellant, and the omission of the propellant passage 11 reduces the number of connection points, reducing damage. can.

The propellant valve 41 includes a propellant outflow valve (Fig. (not shown) is provided.

In addition, in order to hold the cap 44 on the container holder 47, the same structure as the convex part 4a and the stopper 7c is provided, respectively.

FIG. 10 shows the ejection state of the content discharge mechanism of FIG.

When the front surface of the operating lever 49 is pressed by the content release operation from the state shown in FIG. 9, the operating lever 49 rotates around the convex portion 47a and acts on the U-shaped cross-sectional shaft 48b that the concave portion 49a abuts. Since the propellant container case 48 is pushed down, the propellant container 40 and the content container 43 approach each other in such a way that the stems 41a, 45a are brought closer to each other.

Since the stems 41a and 45a are fitted and integrated with the propellant button 50 and the content button 51, this approach causes each stem to be pushed in relative to the propellant container 40 and content container 43, respectively. Then, the propellant inflow valve 45b, the content outflow valve 45c, and the propellant outflow valve of the propellant valve 41 are opened.

Then, the propellant in the propellant container 40 is connected to the "propellant outflow valve of the propellant valve 41 - inside of the stem 41a - inside of the propellant button 50 (connection passage E) - inside of the contents button 51 (connection passage E) - the cylindrical passage of the stem 45a - the propellant inflow valve 45b - the hole in the lower outer periphery of the content valve 45" into the upper space area of the content container 43.

The inflow of the propellant pressurizes the inside of the content container 43 and applies pressure to the liquid level of the contained content, causing the content to be transferred from the inside of the suction pipe 46 to the lower end of the content valve 45. It is discharged from the injection port 51a into the external space through the side interior, the content outflow valve 45c, the central passage of the stem 45a, and the interior of the content button 51 (discharge passage F).

When the pressure on the front side of the operating lever 49 is released, the stems 41a and 45a of the propellant container 40 and content container 43 return to their original positions due to force, each valve closes, and the content is no longer discharged from the injection port 51a. The state returns to the state shown in FIG. 9 in which the operating lever 49 and the propellant container 40 have returned to their positions when not in use.

The opening and closing order of each valve is set by the balance of the biasing forces (stem biasing spring, deformation recovery force of the stem gasket, pressure inside the propellant container, etc.) that move the stems 41a and 45a to the closed state, and no interlocking mechanism is required. It is.

In FIG. 9, the biasing force due to the deformation resistance force of the two stem gaskets corresponding to the propellant inflow valve 45b and the content outflow valve 45c of the stem 45a is the same as that of the one stem gasket corresponding to the stem 41a. Since the deformation resistance force is larger than that caused by the deformation resistance force, during the content discharge operation, the propellant outflow valve of the propellant valve 41 is first opened, and then the propellant inflow valve 45b and the content outflow valve 45c are opened. Become.
Note that the opening and closing order of the valves can be changed by strengthening the spring that biases the stem 41a.

It goes without saying that the present invention is not limited to the above embodiments,
(11) Using a sliding member in place of the rotary operation levers 8 and 49, and driving the cylindrical shafts 9a and 10a, the U-shaped cross-section shaft 48b, etc. by the cam surface provided on this member,
(12) Instead of the groove 10c, the fitting length of a large-diameter fitting part that closely contacts the outer periphery of the outer cylindrical part of the stem 5a is shortened, so that when the content container 3 is removed, the inner cylindrical part of the stem 5a The fitting is released before the small-diameter fitting part that is close to the outer periphery,
You can do it like this.

Aerosol products to which the present invention is applicable include cleaning agents, cleaning agents, antiperspirants, cooling agents, muscle anti-inflammatory agents, hair styling agents, hair treatment agents, hair dyes, hair growth agents, cosmetics, shaving foam, and foods. , droplets (vitamins, etc.), pharmaceuticals, quasi-drugs, paints, gardening agents, repellents (insecticides), cleaners, deodorants, laundry starches, urethane foam, fire extinguishers, adhesives, lubricants There are various uses such as agents.

The contents contained in the contents containers 3 and 43 and the bag body 22 may be in various forms such as liquid, cream, or gel. Components added to the contents include, for example, powder, oil components, alcohols, surfactants, polymer compounds, active ingredients depending on the purpose, and water.

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

As 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, etc. are used.

Examples of surfactants include anionic surfactants such as sodium lauryl sulfate, nonionic surfactants such as polyoxyethylene oleyl ether, amphoteric surfactants such as lauryldimethylaminoacetic acid betaine, and cationic surfactants such as alkyltrimethylammonium chloride. Use a surfactant, etc.

As the polymer compound, methyl cellulose, gelatin, starch, casein, hydroxyethyl cellulose, xanthan gum, carboxyvinyl polymer, etc. are used.

Active ingredients depending on each application include anti-inflammatory analgesics such as methyl salicylate and indomethacin, disinfectants such as sodium benzoate and cresol, insect repellents such as pyrethroids and diethyltoluamide, and control agents such as zinc paraphenolsulfonate. Perspiration agents, coolants such as camphor and menthol, anti-asthmatic drugs such as ephedrine and adrenaline, sweeteners such as sucralose and aspartame, adhesives and paints such as epoxy resin and urethane, dyes such as paraphenylenediamine and aminophenol, and Use oxidizing agents such as hydrogen oxide water, extinguishing agents such as ammonium dihydrogen phosphate, and sodium/potassium hydrogen carbonate.

Furthermore, suspending agents, ultraviolet absorbers, emulsifiers, humectants, antioxidants, metal ion sequestering agents, etc. other than the above-mentioned contents can also be used.

The propellants contained in the propellant containers 1 and 40 include compressed gases such as carbon dioxide gas, nitrogen gas, compressed air, oxygen gas, rare gases, and mixed gases thereof, and liquefied gases such as liquefied petroleum gas, dimethyl ether, and fluorocarbons. Use gas.

1: Propellant container 2: Propellant valve 2a: Stem 2b: Propellant outflow valve 3: Contents container 4: Cap 4a: Protrusion 5: Contents valve 5a: Stem 5b: Propellant inflow valve 5c: Contents Outflow valve 6: Suction pipe 7: Container holder 7a: Propellant container case 7b: Guide portion 7c: Stopper 8: Operation lever 8a: Rear concave portion 8b: Front concave portion 9: Propellant button 9a: Cylindrical shaft 10 : Content button 10a: Cylindrical shaft 10b: Injection port 10c: Groove 11: Propellant passage 11a: Thin wall part A: Connection passage B: Discharge passage C: Propellant side attachment/detachment part D: Content side attachment/detachment part

12: Propellant button 12a: Cylindrical shaft 12b: Relief valve 13: Propellant passage

20: Outer content container 21: Content valve 21a: Stem 22: Bag body 22a: Joint 22b: Suction pipe

30: Propellant button 31: Regulator unit

40: Propellant container 41: Propellant valve 41a: Stem 42: Vent pipe 43: Contents container 44: Cap 45: Contents valve 45a: Stem 45b: Propellant inflow valve 45c: Contents outflow valve 46: Suction Upper tube 47: Container holder 47a: Convex portion 47b: Wall portion 47c: Swelling portion 47d: C-shaped cross-section standing portion 47e: Guide portion 48: Propellant container case 48a: Lid portion 48b: U-shaped cross-section shaft 49: Operation lever 49a: Concave portion 50: Propellant button 51: Content button 51a: Injection port E: Connection passage F: Discharge passage G: Propellant side attachment/detachment part H: Content side attachment/detachment part

Claims (7)

A content container that includes a content container that contains the content to be released and a propellant container that contains a propellant, and that releases the content into an external space by the action of the propellant based on a content release operation. In the release mechanism,
a propellant outflow valve provided in the propellant container;
a propellant inflow valve provided in the content container;
a content outflow valve provided on the content container;
a connection passage communicating a downstream side of the propellant outflow valve and an upstream side of the propellant inflow valve;
a discharge passageway extending from the downstream side of the content outflow valve to the external space area;
a first attachment/detachment portion provided between the downstream side of the propellant outflow valve and the connection passage;
a second attachment/detachment portion provided between the connection passage and the upstream side of the content outflow valve and between the downstream side of the content outflow valve and the discharge passage;
By the content release operation with the first attachment/detachment part and the second attachment/detachment part in the attached state, the propellant outflow valve, the propellant inflow valve, and the content outflow valve are each in an open content release state. Become,
A content release mechanism characterized by: The connection passage is
comprising a pressure relief valve that communicates with the outside of the connection passage when the pressure inside the connection passage exceeds a predetermined value;
The content release mechanism according to claim 1, characterized in that: The pressure relief valve has a part of the fitting part of the connection passage made thin so that it can be deformed.
The content release mechanism according to claim 1 or 2, characterized in that: The content container is
Equipped with a content stem that opens the propellant inflow valve and content outflow valve when pushed in,
The propellant container includes:
comprising a propellant stem that opens the propellant outflow valve when pushed;
The content container and the propellant container are arranged such that the content stem and the propellant stem face each other across a passage member including the connection passage and the discharge passage.
The content release mechanism according to claim 1 or 2, characterized in that: The content container is
accommodating a bag body connected to the upstream side of the content outflow valve,
A downstream side of the propellant inflow valve communicates with an outer peripheral side of the bag body,
The content release mechanism according to claim 1 or 2, characterized in that: The connection passage is equipped with a regulator that adjusts the flow rate of the propellant.
The content release mechanism according to claim 1 or 2, characterized in that: Equipped with the content release mechanism according to claim 1 or 2 and containing the content,
This is an aerosol product that is characterized by:

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