JP2010047290A - Constant volume jetting mechanism and aerosol product with the mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To fixate and stabilize the constant jetting amount of a content relative to the constant volume valve mechanism of an aerosol product. <P>SOLUTION: A content passage from a quantitative chamber A to the inside of a container is provided with a valve operating portion including a ball valve 9 and a valve seat 7b for setting the passage in a closed condition during a rest mode. When a liquid gas mixed in the content filling the chamber A is evaporated to reach the same pressure level as that of the gas phase in the inside of a container body, the valve operating portion including the valve 9 and the seat 7b prevents the content in the chamber A from flowing back to the content liquid level of the body and causes not to reduce the jetting amount of the content during the next operation mode. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, a part of the content passage between the metering chamber and the inside of the container is initially set to a closed state after the metering of the aerosol container. The present invention relates to a quantitative injection mechanism that prevents the contents of a fixed-quantity chamber from flowing into the container.

  In the aerosol container metering mechanism, the contents inside the container are filled into the metering chamber on the stem side (housing side) at the end of the operation mode setting operation as in the case of the normal non-quantitative continuous spraying mechanism. .

  It is desirable that this filling content is stored and held as it is in the stationary mode fixed amount chamber, and a fixed amount of the content is injected into the external space by the next operation mode setting operation, that is, the injection amount of the fixed amount injection mechanism is not reduced, The present invention meets such a need.

  In this specification, “stationary mode” is used as a term indicating a state in which the stem hole portion (= the content passage hole portion) is closed and the interior of the housing and the external space area do not communicate with each other. "Operation mode" is used as a word indicating a state where the external space area communicates with the external space.

  Conventionally, the stem interlocked with the operation mode setting operation comes into contact with the upstream annular seal member or the like inside the housing, and the downstream side for passing the contents released from the seal state between the contact portion and the stem gasket by the operation. A quantitative injection mechanism that injects the contents of a quantitative chamber defined between the stem hole and the external space is used (see Patent Document 1).

  Here, when the operation mode setting operation is completed, the mode is changed to the stationary mode, that is, the stem returns to the initial position, the stem hole is closed with the stem gasket, and the stem that can be said to be the upstream end of the metering chamber and the above-described annular shape When the contact state with the seal member or the like is released and the metering chamber communicates with the inside of the container, the contents of the container flow into the metering chamber. Then, this inflow content is quantitatively injected into the external space by the next operation mode setting operation.

  In the case of such a conventional quantitative injection mechanism, the liquid level in the fixed-quantity chamber is lowered when the operation mode is left in the stationary mode, and the injection amount is reduced at the next use.

The cause of this liquid level drop is that a part of the propellant (liquefied gas) that has flowed into the metering chamber of the housing is vaporized to form a gas phase part on the upper side of the metering chamber, and the pressure in the gas phase part increases. Is to do. If the pressure becomes the same as the pressure in the propellant gas phase part inside the container, the liquid level in the metering chamber (the lower end surface of the gas phase part) decreases until it becomes the same height as that in the container.
JP-A-11-300242

  As described above, in the conventional metering mechanism, the propellant (liquefied gas) in the metering chamber is vaporized as the stationary mode is continued, and the gas phase part above the metering chamber and the propellant gas phase part inside the container are A continuous space region of “gas phase part (quantitative chamber) -liquid phase part-gas phase part (inside the container)” like a U-shaped tube is formed.

  As the propellant in the metering chamber is vaporized, the pressure in the gas phase portion of the metering chamber increases, which lowers the liquid level in the metering chamber.

  For this reason, there is a problem in that a sufficient amount of contents are not stored in the fixed quantity chamber which is an injection target area when the next aerosol container is operated, and the quantity of contents quantitatively injected into the external space is reduced. It was.

  Therefore, in the present invention, a valve action unit for setting the passage in the stationary mode at least in a part of the content passage (for example, the lower part of the housing or the tube for passing the content) from the fixed quantity chamber to the inside of the container. The purpose of this is to prevent the contents of the metering chamber, which is the next injection target, from flowing back to the inside of the container, and to stabilize and stabilize the metered quantity of the contents. To do.

The present invention solves the above problems as follows.
(1) The contents of a metering chamber (for example, metering chambers A and A ′ described later) formed in the housing portion of the aerosol container are externally connected via a stem (for example, stem 2 described later) linked with the operation mode setting operation. In the quantitative injection mechanism injected into
Initially setting a part of the content passage between the metering chamber and the inside of the container to a closed state at least when in a stationary mode to prevent the flow of the content from the metering chamber into the container,
In addition, the part is initially closed by the flow of the contents from the inside of the container to the quantitation chamber caused by the pressure difference between the inside of the container and the outside space side of the contents passage accompanying the operation mode setting operation. To transition from open to open,
A valve action part (for example, a ball valve 9 and a valve seat 7b, 7d 'described later)
Provided in the content passage.
(2) In (1) above,
As the quantitative chamber,
A stem gasket (for example, a later-described stem gasket 6) with respect to a content passage hole (for example, a later-described lateral hole 2b), and an annular seal portion (for example, an later-described annular seal) with which the stem abuts at the operation mode position. Using a space defined by the member 8) (for example, a quantitative chamber A described later),
As the valve action part,
Provided on the upstream side of the annular seal portion, and the contact state between the stem and the annular seal portion is released by the completion of the operation mode setting operation, and the contents flowing into the defined space from the inside of the container are pressed. A check valve (for example, a ball valve 9 described later) and a receiving portion of the check valve (for example, a valve seat 7b described later) are used.
(3) In (1) above,
As the quantitative chamber,
A space defined by a stem gasket (for example, a later-described stem gasket 6) with respect to a content passage hole (for example, a later-described lateral hole 2b) and a valve action portion at a stationary mode position (for example, a later-described quantitative amount). Room A ')
As the valve action part,
A check valve (for example, a ball valve 9 to be described later) pressed by the contents flowing from the inside of the container at the time of fixed quantity injection based on the operation mode setting operation, and a receiving portion (for example, a valve seat to be described later) of the check valve in the stationary mode 7d ′)
The defining space includes
A space on the downstream side of the check valve that is pressed by the inflow contents and closes a cylindrical quantitative indoor passage area (for example, a bush 8 ′ and a passage portion 8a ′ described later) after the constant injection An auxiliary passage area (for example, a groove 8d ′ and a notch 8e ′ described later) for allowing the contents to flow into the portion from the inside of the container is provided.

  The quantitative injection mechanism having such a configuration and the aerosol type product provided with the quantitative injection mechanism are the objects of the present invention.

  As described above, the present invention provides a valve for setting the passage in a stationary mode at least in a part of a content passage (for example, a lower part of the housing or a tube for passing the content) from the metering chamber to the inside of the container. Since the action part is provided, the content of the metering chamber, which is the next injection target, is prevented from flowing back to the inside of the container, so that the amount of metered injection of the content is stabilized and stabilized. Can do.

  The best mode for carrying out the present invention will be described with reference to FIGS.

here,
FIG. 1 shows a stationary mode of the metering injection mechanism (part 1) of the present invention,
FIG. 2 shows an operation mode (quantitative injection state) in which the push button of FIG. 1 is pressed,
FIG. 3 shows the metering chamber filling mode after releasing the pressing operation following FIG.
FIG. 4 shows a stationary mode of the quantitative injection mechanism (part 2) of the present invention,
FIG. 5 shows an operation mode (quantitative injection state) in which the push button of FIG. 4 is pressed,
FIG. 6 shows the metering chamber filled mode after the pressing operation is released following FIG.

Here, in the quantitative injection mechanism (part 1),
In the stationary mode of FIG. 1, both the stem hole for passing the contents and the ball valve for preventing the contents backflow are closed,
In the operation mode of FIG. 2, the stem hole is opened, the ball valve is closed,
In the metering chamber filling mode of FIG. 3, the stem hole is closed and the ball valve is open.

  That is, in the stationary mode of FIG. 1, the ball chamber is shut off between the metering chamber and the inside of the container, and in the operation mode of FIG. 2, the contents of the metering chamber are injected into the external space region through the stem hole, In the metering chamber filling mode, the ball valve is opened and the contents on the container side flow into the metering chamber.

Further, in the quantitative injection mechanism (part 2),
In the stationary mode of FIG. 4, both the stem passage for passing the contents and the lower valve for preventing the contents backflow are closed,
In the operation mode of FIG. 5, the stem hole is opened, the lower valve is opened, and the upper valve for regulating the upward movement position of the lower valve is closed,
In the metering chamber filled mode of FIG. 6, the stem hole is closed, the upper valve is opened, and the lower valve is closed.

  That is, in the stationary mode of FIG. 4, the ball chamber is shut off between the metering chamber and the inside of the container, and in the operation mode of FIG. 5, the contents of the metering chamber are injected into the external space area through the stem hole and at the same time The valve moves up and the contents on the container side flow into the metering chamber. In the metering chamber filled mode of FIG. 6, the ball valve returns to the initial position in the stationary mode and the lower valve is closed.

  The components of the reference numbers with alphabets (for example, the passage area 2a) used in FIGS. 1 to 6 indicate that they are part of the components (for example, the stem 2) of the numeral portions of the reference numbers in principle.

1-3,
1 is a vertical movement type push button in which a passage to the external space is formed,
2 is fitted with a passage portion of the push button 1, and a lower portion is disposed in an upper housing 4 which will be described later, and is urged upward in the figure by an elastic action of a coil spring 5 which will be described later. A stem that exhibits a valve action together with the gasket 6,
2a is a passage area for the contents and propellant leading to the passage of the push button 1,
2b is a side hole part constituting the injection valve to the external space area,
2c is an annular step formed on the outer peripheral surface and receiving the upper end of a coil spring 5 described later,
3 is a mounting cap attached to the open end side of the container body of an aerosol type product containing the contents and propellant described later;
4 is a cylindrical upper housing for accommodating the stem 2 in a vertically movable manner,
4a is a plurality of ribs for receiving the lower end side of a coil spring 5 described later,
4b is an intermediate annular portion formed on the inner peripheral surface of the lower end portion of the rib,
4c is a vertical hole portion that is defined by the intermediate annular portion and guides the lower outer peripheral surface of the stem 2,
5 is a coil spring disposed between the annular step portion 2c of the stem 2 and the step portion of the rib 4a of the upper housing 4 to urge the stem upward.
6 is attached between the opening portion of the upper housing 4 and the ceiling surface of the mounting cap 3 to provide a sealing action for the internal space of the upper housing, and also acts as an injection valve together with the lateral hole portion 2b of the stem 2. Stem gasket,
7 is a cylindrical lower housing that fits into the lower cylindrical portion of the upper housing 4 and functions as a content passage;
7a is a cylindrical part to which a tube 10 described later is attached;
7b is an annular taper-shaped valve seat (valve action portion for preventing the backflow of contents) with which a ball valve 9 described later contacts,
A trumpet-shaped ring 8 is attached between the intermediate annular portion 4b of the upper housing 4 and the upper end surface portion of the lower housing 7, and defines a metering chamber by contacting with the stem 2 in the operation mode (see FIG. 2). Sealing member,
8a is formed so as to jump off in the circumferential direction of the opening on the lower end side, and receives a ball valve 9 described later in the metering chamber filling mode (see FIG. 3). The intermittent convex part,
9 is moved upward in the figure by the action of the contents flowing in based on the difference between the pressure and the propellant pressure inside the container when the pressure in the quantitative chamber decreases, such as after the end of the quantitative injection, A ball valve (a valve action portion for preventing the backflow of contents) that drops due to its own weight and returns to a contact state with the valve seat 7b (see FIG. 1) when the pressure difference is substantially eliminated with inflow,
10 is a tube for inflow of contents attached to the lower housing 7,
A is a metering chamber defined between the upstream annular seal member 8 and the downstream stem gasket 6 in the operating mode;
B is a flow of contents to be quantitatively injected in the operation mode (see FIG. 2),
C is the flow of the contents in the fixed chamber filling mode (see FIG. 3),
Respectively.

  Here, the push button 1, the stem 2, the upper housing 4, the lower housing 7, the tube 10 and the like are made of plastic made of polypropylene, polyethylene, polyacetal, nylon, polybutylene terephthalate, or the like.

  The mounting cap 3 is made of metal, the coil spring 5 is made of metal or plastic, the stem gasket 6 is made of rubber, and the annular seal member 8 is made of plastic or rubber. The ball valve 9 is made of metal, rubber, or plastic.

  Note that the contact portion of the annular seal member 8 is deformed by contact with the stem 2 or the ball valve 9, and when the contact is not received, the annular seal member 8 tries to return to the original state.

  A basic feature of the metering mechanism of FIGS. 1 to 3 is that a valve seat 7d is provided in a lower housing 7 that is upstream of an annular seal member 8 that defines a metering chamber A and serves as a content passage between the inside of the container. And a valve action portion for preventing the back flow of the contents, which is composed of the ball valve 9.

  The ball valve 9 (see FIG. 3) immediately after the fixed quantity injection is pushed up by the action of the inflowing contents from the inside of the container as described above, and is brought into contact with the intermittent convex portion 8a and held in that state.

  In this contact state, the contents flow into the internal space of the upper housing 4 from between the intermittent convex portions 8a.

  When the contents from the inside of the container sufficiently flow into the metering chamber A such as the upper housing 4 and the pressure in the metering chamber A increases until it becomes substantially the same as that inside the container, the inflow of the contents ends, and the ball valve 9 Falls by its own weight and comes into contact with the valve seat 7d.

  Therefore, even if the propellant contained in the metering chamber A is vaporized together with the contents and the pressure in the gas phase increases, the content already filled in the metering chamber A passes through the tube 10 into the container. Will not flow.

  That is, the contents (see FIG. 3) that flowed into the metering chamber A with the end of the previous metering injection remain held there, and the contents that are released to the external space by the next metering injection are reduced. Does not occur.

  The fixed quantity injection operation itself is the same as that of the conventional fixed quantity injection mechanism. In the operation mode of FIG. 2, the stem 2 is moved downward by the pressing operation of the push button 1, and the horizontal hole 2b, the fixed quantity chamber A, Are communicated with each other so that the lower end portion of the stem and the annular seal member 8 are in contact with each other.

  Only the contents contained in the metering chamber A between the abutting portion and the stem gasket 6 are “the lateral hole 2b—the passage area 2a—the push button 1 due to the action of the propellant (liquefied gas) therein. It is injected into the external space through the passage portion.

  After the end of the injection, as described above, the mode is shifted to the content filling mode shown in FIG.

  At this time, since the user's pressing operation is also completed, the stem 2 is moved upward by the action of the coil spring 5 to return to the initial position (stationary mode position), and flows into the metering chamber A in FIG. The contents are not injected from the lateral hole portion 2b into the external space.

  As the inflow of the contents into the metering chamber A in FIG. 3 proceeds, the ball valve 9 falls as described above, and the space between the ball valve 9 and the valve seat 7d is closed, and the operation proceeds to the stationary mode in FIG.

4-5,
4 'is a cylindrical general-purpose housing that accommodates the stem 2 so as to be movable up and down.
4a ′ is a rib which is provided inside and guides the outer peripheral surface of the lower end of the stem 2 in the vertical direction and which has a stepped portion for receiving the lower end of the coil spring 5
4b 'is a cylindrical part for attaching a tube for inflow of contents when no additional housing part is attached,
7 ′ is an additional housing that fits to the outer peripheral surface of the cylindrical portion 4b ′;
7a ′ is a cylindrical part to which the tube 10 is attached,
7b 'is a rib for guiding the ball valve 9 to the center in the radial direction of the additional housing;
7c ′ is the lower space of the quantitative chamber for storing the ball valve 9,
7d 'corresponds to the valve seat 7b of FIGS. 1 to 3, and in the static mode, the ball valve 9 contacts and the valve seat with an annular taper surface shape that closes the upstream side of the constant volume lower space 7c' ( Lower valve: valve action part),
8 'is a cylindrical bush with flange,
8a 'is a passage part,
8b ′ is provided on the upstream side of the passage portion 8a ′, and a flange portion that contacts the lower end surface of the cylindrical portion 4b ′ and the upper end portion of the rib 7b ′ to set the fixing position of the bush,
8c ′ is an annular tapered surface seat (upper valve) that closes the inlet portion of the passage portion 8a ′ by the close contact of the ball valve 9;
8d 'is provided in the vertical direction of the outer peripheral surface of the bush, and a groove portion 8e' acting as a content inflow passage when the valve seat 8c 'and the ball valve 9 are closed is provided in the flange portion 8b', and the valve seat 8c ' A notch that acts as a content inflow passage when the ball valve 9 is closed;
A ′ is a metering chamber defined between the upstream ball valve 9 in contact with the valve seat 7d ′ in the stationary mode and the downstream stem gasket 6;
B ′ is a schematic flow direction of the contents from the container body to the lower space area 7c ′ of the quantitative chamber,
C ′ is a schematic flow direction of contents from the lower space area 7c ′ of the quantitative chamber to the space outside the container,
D ′ is a schematic flow direction of the contents from the lower determination chamber space area 7c ′ to the general purpose housing 4 ′ and the passage portion 8a ′ in the upper determination chamber space area,
Respectively.

  The push button 1, the stem 2, the mounting cap 3, the coil spring 5, the stem gasket 6, the ball valve 9 and the tube 10 other than the general-purpose housing 4 ′, the additional housing 7 ′ and the bush 8 ′ are shown in FIGS. 3 have the same function as each component having the same reference number.

  Here, the general-purpose housing 4 'and the additional housing 7' are made of plastic made of polypropylene, polyethylene, polyacetal, nylon, polybutylene terephthalate, or the like. The bush 8 'is made of plastic or rubber.

The basic features of the quantitative injection mechanism shown in FIGS.
(11) The metering chamber A ′ and the inside of the container are blocked by the valve action of the ball valve 9 for defining the metering chamber and the valve seat 7d ′ in the stationary mode.
(12) A mode in which a unit for adding a metering chamber (additional housing 7 ', bush 8' and ball valve 9) is attached to the cylindrical portion 4b 'of the general-purpose housing 4' constituting a general non-quantitative valve mechanism. ,
It is.

  Due to the valve action of the ball valve 9 or the like in the stationary mode, the content of the next injection target that has already flowed into the metering chamber is passed through the tube 10 inside the container, as in the case of the metering mechanism of FIGS. Is reliably prevented from flowing into Thereby, the fixed amount injection of the contents can be ensured.

  The operation button 1, the stem 2, the mounting cap 3, the general-purpose housing 4 ′, the coil spring 5 and the stem gasket 6 are general-purpose parts for a general non-quantitative valve mechanism, and are special for the quantitative injection mechanism of the present invention. There is no need to design.

  In addition, when assembling these general-purpose components, no special process is required, and the assembled non-quantitative valve mechanism can be used as it is.

  A bush 8 ′ is fitted on the inner peripheral surface side of the cylindrical portion 4 b ′ of the general-purpose housing 4 ′, and a groove portion 8 d ′ provided on the outer peripheral surface side of the bush 8 ′ is between the inner peripheral surface, A passage portion (auxiliary passage region) having a small cross-sectional area for passing contents is formed.

  An additional housing 7 ′ is fitted on the outer peripheral surface side of the cylindrical portion 4 b ′ of the general-purpose housing 4 ′, and the ball valve 9 freely moves up and down in the lower space area 7 c ′ below the metering chamber below the bush 8 ′. It is provided in a movable manner.

  Note that a rib 7b 'is provided on the inner peripheral surface of the additional housing 7' to prevent the ball valve 9 from moving in a direction other than the vertical direction and to ensure close contact with the valve seat 8c '.

  Further, between the ribs 7b ', when the ball valve 9 falls by its own weight, it acts as a content passage area.

  The stem 2 in the stationary mode of FIG. 4 is in close contact with the stem gasket 6 by the action of the coil spring 5, and the hole 2b is closed.

  The contents flow into the metering chamber A 'from the container main body at the end of the previous metering injection, and the ball valve 9 is in contact with the valve seat 7d' at the lower end of the metering chamber lower space 7c '.

  As described above, in the stationary mode (see FIGS. 4 and 6) after the previous quantitative injection operation is completed, the ball valve 9 and the valve seat 7d ′ are brought into contact with each other to be in a closed state. Even when the liquefied gas mixed in the content filled in the quantitative chamber A ′ is vaporized to the same pressure as the gas phase inside the container, the content on the quantitative chamber side is the content of the container body. It does not flow back to the liquid level. By preventing the reverse flow, the content injection amount is prevented from being lowered when the operation mode is shifted to the next operation mode.

  When the operation button 1 is pressed by the user from the state of FIG. 4, the stem 2 moves down against the elastic force of the coil spring 5 and shifts to the quantitative injection mode of FIG. 5.

  At this time, the close contact state between the stem 2 and the stem gasket 6 is released, the hole 2b is opened, and the internal space area of the general-purpose housing 4 ′ becomes the hole 2b of the stem 2 and the internal passage area 2a. And it communicates with the container external space via the passage portion of the operation button 1 and the injection hole (not shown).

  As a result, the content of each housing flows in the C ′ direction due to a pressure difference between the container outer space and the container inner space area (the inner space areas such as the general-purpose housing 4 ′, the additional housing 7 ′, and the container body). The contents of the container main body are injected from the injection hole to the outside, and the content of the container main body flows from the tube 10 to the lower space area 7c ′ of the quantitative chamber in the B ′ direction.

  The ball valve 9 moves upward as the contents flow into the lower space area 7c ′ of the metering chamber, and finally closes the valve seat 8c ′ to set the inflow side of the passage portion 8a ′ to a closed state. To do.

  When the passage portion 8a ′ and the downstream space area thereof are substantially equal to the atmospheric pressure by this closed state setting, the injection state until then substantially stops, so that the user can recognize that the quantitative injection of the contents has ended. .

  Even after the inflow side of the passage portion 8a 'is closed, the contents in the space area downstream from the inflow side of the passage portion 8a' are almost all ejected to the outside by the vaporization and expansion of the liquefied gas mixed therewith. End up.

  Even after the ball valve 9 and the valve seat 8c ′ are brought into close contact with each other and the upstream side of the passage portion 8a ′ is in the closed state, the contents of the container main body remain “under the quantitative chamber” while the operation button 1 is pressed. It continues to be sprayed to the outside through the space area 7c'-notch 8e'-groove 8d'-general housing 4'internal space-hole 2b-internal passage area 2a-passage portion of the operation button 1, but the groove 8d ' Since the cross-sectional area is small, the injection amount is small.

  When the user releases the pressing operation state of the operation button 1 in FIG. 5, the stem 2 returns upward by the elastic force of the coil spring 5, and comes into close contact with the stem gasket 6 to close the hole 2 b (FIG. 6). ).

  As described above, in the internal space of the general-purpose housing 4 ′ and the bush 8 ′ that have become almost atmospheric pressure with the end of the quantitative injection, the contents in the lower space area 7c ′ of the quantitative chamber are D due to the propellant pressure of the container body. 'Inflow in the direction increases the internal space pressure of the bush.

  As the pressure increases, the internal space of the bush 8 ′ and the lower space area 7 c ′ of the quantitative chamber become substantially the same pressure, and the ball valve 9 that is in close contact with the valve seat 8 c ′ is under its own weight. It falls to the lower end portion of 7c ′ and returns to the stationary mode.

Of course, the present invention is not limited to the above embodiments, for example,
(21) In place of the ball valve 9 in FIGS. 1 to 6, those having various shapes such as a cylindrical valve body, a sheath-like valve body, and a valve body having a hemispherical shape on the end face of the cylinder are used.
(22) A plurality of valve bodies 9 are placed in the lower housing 7 or the additional housing 7 ′.
(23) Instead of the valve seat 7b and the ball valve 9 in FIGS. 1 to 3, various check valves such as a swing type, a diaphragm type, and a lift type other than a ball are used.
(24) The contents different from the valve action part upstream of the valve seat 7d 'in place of or in combination with the valve action part by the valve seat 7d' (ball valve 9 and) of FIGS. Provide a check valve (swing type, diaphragm type, lift type, etc.) to prevent material backflow.
(25) The bush 8 ′ of FIGS. 4 to 6 is omitted, and a groove or the like having the same action as the groove 8d ′ or the notch 8e ′ is formed on the inner peripheral surface of the cylindrical portion 4b ′.
You may do it.

  Aerosol products to which the present invention is applied include deodorants, cleaning agents, cleaning agents, antiperspirants, cooling agents, muscle anti-inflammatory agents, hair styling agents, hair treatment agents, hair dyes, hair restorers, cosmetics, Shaving foam, food, droplets (vitamins, etc.), pharmaceuticals, quasi-drugs, paints, horticultural agents, repellents (insecticides), cleaners, laundry pastes, urethane foams, fire extinguishers, adhesives, lubrication There are various uses such as agents.

  As a component mix | blended with the contents of a container main body, a powdery substance, an oil component, alcohol, surfactant, a high molecular compound, an active ingredient according to each use, water, etc. are mentioned, for example.

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

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

  Examples of the alcohol include monovalent lower alcohols such as ethanol, monovalent higher alcohols such as lauryl alcohol, and polyhydric alcohols such as ethylene glycol, glycerin, and 1,3-butylene glycol.

  Surfactants include anionic surfactants such as sodium lauryl sulfate, nonionic surfactants such as polyoxyethylene oleyl ether, amphoteric surfactants such as lauryldimethylaminoacetic acid betaine, and cations such as alkyltrimethylammonium chloride. A surfactant is used.

  As the polymer compound, methyl cellulose, gelatin, starch, casein, hydroxyethyl cellulose, xanthan gum, carboxyvinyl polymer, or the like is used.

  Active ingredients according to each application include anti-inflammatory analgesics such as methyl salicylate and indomethacin, antibacterial agents such as sodium benzoate and cresol, insect repellents such as Hillesroid and diethyltoluamide, antiperspirants such as zinc oxide, Coolants such as camphor and menthol, anti-asthma 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, dihydrogen phosphate Use a fire extinguishing agent such as ammonium or sodium bicarbonate.

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

  As the propellant, a liquefied gas such as liquefied petroleum gas, dimethyl ether, or fluorocarbon is used.

It is explanatory drawing which shows the still mode of the fixed injection mechanism (the 1) of this invention. It is explanatory drawing which shows the operation mode (quantitative injection state) by which the pushbutton of FIG. 1 was pressed. It is explanatory drawing which shows the mode during filling of the fixed_quantity | quantitative_assay chamber after the press operation cancellation following FIG. It is explanatory drawing which shows the stationary mode of the fixed injection mechanism (the 2) of this invention. It is explanatory drawing which shows the operation mode (quantitative injection state) by which the pushbutton of FIG. 4 was pressed. It is explanatory drawing which shows the fixed_quantity | quantitative_assay filling completed mode after the press operation cancellation following FIG.

Explanation of symbols

1: Push button 2: Stem 2a: Passage area 2b: Horizontal hole portion 2c: Annular step portion 3: Mounting cap 4: Upper housing 4a: Rib 4b: Intermediate annular portion 4c: Vertical hole portion 5: Coil spring 6: Stem gasket 7: Lower housing 7a: Cylindrical portion 7b: Valve seat 8: Annular seal member 8a: Intermittent convex portion 9: Ball valve 10: Tube A: Metering chamber B: Flow of contents to be metered in operation mode (Fig. 2)
C: Flow of contents in fixed-quantity chamber filling mode (see Fig. 3)

(The following is used only in FIGS. 4 to 6)
4 ': General-purpose housing 4a': Rib 4b ': Cylindrical part 7': Additional housing 7a ': Cylindrical part 7b': Rib 7c ': Determination chamber lower space area 7d': Valve seat (lower valve)
8 ': Bush 8a': Passage 8b ': Flange 8c': Valve seat (upper valve)
8d ′: Groove 8e ′: Notch A ′: Determination chamber B ′: Flow direction of contents from the container main body to the determination chamber lower space area 7c ′ C ′: From the determination chamber lower space area 7c ′ to the container external space Flow direction D ′ of contents to the flow direction of the contents from the lower space area 7c ′ of the quantitative chamber into the general-purpose housing 4 ′ and the passage 8a ′

Claims (4)

In the quantitative injection mechanism in which the contents of the quantitative chamber formed in the housing part of the aerosol container are injected into the external space via a stem that is linked to the operation mode setting operation,
Initially setting a part of the content passage between the metering chamber and the inside of the container to a closed state at least when in a stationary mode to prevent the flow of the content from the metering chamber into the container,
In addition, the part is initially closed by the flow of the contents from the inside of the container to the quantitation chamber caused by the pressure difference between the inside of the container and the outside space side of the contents passage accompanying the operation mode setting operation. To transition from open to open,
A valve action part is provided in the content passage,
A quantitative injection mechanism characterized by that. The quantitative chamber is
It consists of a space defined by a stem gasket for the contents passage hole of the stem and an annular seal portion with which the stem abuts in its operating mode position,
The valve action part is
Provided on the upstream side of the annular seal portion, and the contact state between the stem and the annular seal portion is released by the completion of the operation mode setting operation, and the contents flowing into the defined space from the inside of the container are pressed. A check valve,
Consisting of the receiving part of the check valve,
The fixed-quantity injection mechanism according to claim 1 characterized by things. The quantitative chamber is
It consists of a space defined by a stem gasket for the content passage hole of the stem and the valve action part in the stationary mode position,
The valve action part is
A check valve that is pressed against the contents flowing from the inside of the container at the time of quantitative injection based on the operation mode setting operation;
It consists of the receiving part of the check valve in stationary mode,
The defined space is
In the stage after the quantitative injection, the content is caused to flow from the inside of the container into the space portion that is downstream of the check valve that is pressed by the inflow content and the cylindrical quantitative chamber passage area is closed, Auxiliary passage area for
The fixed-quantity injection mechanism according to claim 1 characterized by things. Comprising the quantitative injection mechanism according to any one of claims 1 to 3, and containing a propellant and contents;
Aerosol type product characterized by that.

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