JP2017210251A - Metering valve device and aerosol sprayer container using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metering sprayer mechanism capable of increasing spraying amount of content in a container having a limited height and a limited cross section area.SOLUTION: A metering mechanism attached to a lid part 22 of a container for spraying a constant amount of content from the container comprises: a valve action part including a ball valve 17 and a ball moving space, disposed under a housing encasing a stem 13. A tube part constituting the valve action part is provided with a curved part. The curved part preferably has a three-dimensionally curved shape with the height monotonously changing, such as, for example, a spiral shape.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a metering valve device for injecting a fixed amount of medicine, and more particularly to a metering valve device corresponding to a change in injection amount.

  Aerosol products are widely used to spray deodorants, cleaning agents, insecticides, gardening solvents, cosmetics, and other various drugs, and in particular, a certain amount of drug is sprayed or sprayed by a single push operation. Aerosol products equipped with such a fixed quantity injection mechanism are widely used.

  There are several types of fixed-quantity injection mechanisms, but a typical mechanism elastically supports a stem that can move up and down in a housing provided with a fixed-quantity chamber for storing a certain amount of contents. It has a structure in which a push button provided with an injection nozzle is fitted to the upper end of the nozzle. In this mechanism, by pushing down the push button, the contents passage in the stem connected to the external space and the metering chamber of the housing are communicated with each other through the hole provided in the stem, and the pressure in the container and the external pressure are reduced. Using the pressure difference, the contents in the quantitative chamber are released to the external space.

  When the stem returns to its original position by stopping the push-down operation of the push button, the hole moves to a position where the communication between the content passage of the stem and the metering chamber is interrupted, the injection stops, and the metering chamber The contents in the container flow in and return to the initial state.

  If the stationary state continues for a long time, the contents stored in the metering chamber after injection flow back to the container side by the action of the propellant (liquefied gas or compressed gas soluble in the contents) contained therein, There was a problem that the amount decreased. In order to solve this problem, in the technique disclosed in Patent Document 1, it is proposed to prevent a decrease in the amount of liquid in a stationary state by providing a valve action unit in the metering chamber of the metering mechanism as described above. . Specifically, the valve action portion includes a ball valve and valve seats provided at both ends of a cylindrical space in which the ball valve moves, and the ball valve is accommodated in the valve seat at the container side end portion in a stationary state. This prevents backflow from the metering chamber to the container side.

JP 2010-47290 A

  There is a demand to increase the amount of injection of contents depending on the application and application target of aerosol products. However, in the metering valve device provided with the valve action unit described above, the injection amount is determined by the volume of the cylindrical space in which the ball valve moves as described above. Therefore, in order to increase the volume of the quantitative chamber, it is necessary to increase its height or increase the cross-sectional area. However, when the height is increased, a container with a high height, for example, a non-standard container is used. There must be. As for the cross-sectional area, in the case of a fixed quantity injection mechanism using a ball valve that does not have a valve action part, the cross-sectional area can be widened, but the amount of liquid due to gas pressure is reduced accordingly. In addition, in the case of a quantitative injection mechanism having a valve action part as disclosed in Patent Document 1, if the cross-sectional area is increased, the clearance between the ball valve and the quantitative interior wall becomes large, and the operation of the ball valve becomes unstable. The function as a valve is inhibited.

  This invention makes it a subject to provide the fixed_quantity | quantitative_quantity injection mechanism which can increase the injection quantity of the content under restrictions of the height and cross-sectional area of a fixed_quantity | quantitative_assay chamber.

  The fixed-quantity injection mechanism of the present invention solves the above-mentioned problem by providing a curved portion in a pipe portion that constitutes the valve action portion in a fixed-quantity injection mechanism having a valve action portion at the lower part of the housing that houses the stem. The bending portion is preferably a bending portion whose height changes monotonously and bends three-dimensionally, and can take a spiral shape, for example.

  According to the present invention, the height of the pipe part itself is obtained by making the shape of the pipe part in the valve action part having the pipe part and the ball valve moving in the pipe part into a curved cylinder instead of a linear cylinder. The capacity of the metering chamber formed in the pipe part can be increased without changing the (dimension in the vertical direction of the container) and the diameter.

The whole figure showing one embodiment of the aerosol injection container of the present invention. The side sectional view showing one embodiment of the metering valve device of the present invention. Sectional drawing which shows the detail of the connection part of the housing and pipe part of the metering valve apparatus of FIG. The sectional side view which shows the injection state of the metering valve apparatus of FIG. It is a figure which shows the principal part of the metering valve apparatus of FIG. 2, (a) is a side view, (b) is a top view. The figure explaining the parameter of a spiral. The sectional side view explaining the return from the injection state of the metering valve device of FIG.

  Hereinafter, embodiments of a metering valve device of the present invention and an aerosol injection container using the same will be described.

  The metering valve device of this embodiment is attached to the lid of a container for storing an aerosol drug (hereinafter referred to as “content”), and has a cylindrical housing having a space that serves as both a content passage and a storage portion. And a stem that is elastically supported by the housing so as to be movable along the inner wall of the housing. The stem is partly located outside the lid part, the remaining part is located in the housing, and has a hole communicating the space in the housing and the external space. In the valve device of the present embodiment, a valve action portion is provided at the end of the housing opposite to the end on the lid side.

  The valve action part includes a curved pipe part having a fixed quantity chamber for storing a certain amount of contents, a ball valve moving in the curved pipe part, and valve seats provided at both ends of the fixed quantity chamber. The part is formed with a curved part between both ends. As the shape of the bending portion, there may be a spiral shape, a U shape, an S shape, or the like.

Hereinafter, an embodiment of a metering valve device will be described with reference to the drawings.
First, an aerosol injection container to which the metering valve device of the present embodiment is applied will be briefly described. FIG. 1 is an overall view showing an example of an aerosol injection container 20. In the following description, the vertical direction is referred to as the bottom side of the container and the side to which the lid is attached, regardless of the direction in which the aerosol spray container is used.

  The aerosol injection container 20 includes a container 21 for storing the contents, and a lid part (hereinafter referred to as a mounting cap) 22 having an opening serving as a flow path for the contents, and the metering valve device 10 is provided in the opening of the lid part. It is fixed. A push button 23 for performing an operation of injecting contents is fixed to the upper end of the metering valve device 10. The push button 23 has a passage through which the contents pass, and a discharge port (nozzle) 24 for the contents is formed at the tip of the passage. The lower end of the metering valve device 10 is located higher than the bottom of the container, and a tube 25 serving as a content passage from the bottom of the container to the metering valve device 10 is connected thereto.

  In the example shown in FIG. 1, the push button 23 is a cylindrical cap integrally formed with the injection nozzle 24, and adopts a configuration in which the contents are ejected by a person pushing down the upper surface. However, the push button is not limited to the illustrated example, and a known configuration such as a configuration in which a lever or the like for pushing down the upper surface of the push button is added can be employed. FIG. 1 shows an example in which the lid portion 22 is a mountain cap that is caulked and fixed to an opening provided on the upper surface of the container 21, but a structure in which a neck portion is provided on the upper surface and the lid portion is fixed to the neck portion. Etc. In any case, the lid 22 is fixed to the container so as to keep the container 21 airtight, and a sealing member (not shown) for keeping the airtightness is disposed between the lid 22 and the container 21. May be.

  Such an aerosol injection container 20 includes, as contents, a liquid agent in which a drug component, a solvent, and other additives according to applications are appropriately mixed as necessary. In addition to the liquid agent, the propellant for injecting the liquid agent includes, for example, a liquefied gas such as liquefied petroleum gas, dimethyl ether and fluorocarbon, and a compressed gas soluble in the liquid agent.

  Each component (including the metering valve device) that constitutes the aerosol spray container is a material that is not affected by these contents, unless otherwise specified, such as plastic, rubber, metal, ceramics, etc., used in general containers Thus, any material can be selected and used according to the application.

  When the push button 23 is not pressed, that is, when the injection operation is not performed (referred to as a stationary state), the aerosol injection container having such a configuration is shut off from the external space, such as LPG contained in the contents. When the liquefied gas is vaporized or by the compressed gas sealed in the container, the pressure in the container is maintained higher than the external pressure, for example, 0.4 to 0.8 MPa (several times the atmospheric pressure). As will be described in detail later, the metering chamber provided in the metering valve device 10 is filled with contents.

  When the push button 23 is pushed from the stationary state, the inside of the container and the external space communicate with each other, the content in the metering chamber is pushed upward by the pressure difference between the two, and the push button 23 connected to the upper end of the metering valve device 10. It sprays from the front-end | tip (injection nozzle 24). When the push-down operation of the push button 23 is stopped, the push button 23 returns to the stationary position, and the container is again blocked from the external space. The metering chamber of the metering valve device 10 temporarily becomes low pressure due to the injection of the contents, but the contents flow in due to the pressure difference from the pressure in the container 21 and return to a stationary state.

  Next, details of the metering valve device 10 that enables the operation of the above-described aerosol injection container will be described with reference to FIGS. 2 and 4 are side sectional views showing the entire metering valve device, FIG. 2 shows a stationary state before an operation for injection is performed, and FIG. 4 is a state where the operation for injection is performed Is shown.

  As shown in FIG. 2, the metering valve device 10 of the present embodiment includes, as main elements, a first housing 11 having cylindrical spaces 11 a and 11 b inside, and a part of the first housing 11 in the space of the first housing 11. A stem 13 housed and movable in the vertical direction within the first housing, a second housing 15 connected to the lower end of the first housing 11, and a ball valve 17 that functions as a valve action part together with the second housing 15. Prepare.

  The outer diameter of the first housing 11 changes from the top to the large diameter, the medium diameter, and the small diameter in order, and the large diameter portion 111 is fixed to the mounting cap 22 of the aerosol injection container formed in the same shape as that. . Although the method of fixing is not particularly limited, for example, fitting or screwing using the spring force of the mounting cap 22 can be employed, and the large-diameter portion 111 is fixed so as not to come out of the mounting cap 22. A ring-shaped stem gasket 12 is inserted between the inside of the mounting cap 22 and the end of the large-diameter portion 111 to ensure sealing with the stem 13 described later. The stem gasket 12 is made of an elastic material such as rubber or elastomer.

  The space 11a inside the large-diameter portion 111 and the medium-diameter portion 112 is a storage space and passage for contents, and includes a stem 13 and a spring 14 that applies an upward biasing force when it is pushed downward. A space to store. This space is continuous with the internal space 11b of the small diameter portion 113 having a smaller diameter. A member (bush) 16 serving as a valve seat constituting a later-described valve action portion is fitted into the internal space 11b of the small diameter portion 113, and an end portion of the second housing 15 is fixed to the outside.

  The stem 13 is a substantially cylindrical member having a content passage 13a formed therein, and includes a portion (tip portion) 131 located outside the first housing 11, a portion (bottom portion) 133 located inside, and the like. The intermediate portion 132 is formed with a lateral hole 135 for communicating the content passage 13 a with the internal space 11 a of the first housing 11.

  A push button 23 (shown in FIG. 1) for pushing down the stem 13 is fixed to the distal end portion 131. The tip 131 is open and connects the content passage 13 a of the stem 13 to a passage formed in the push button 23 and communicating with the outside.

  In the stationary state shown in FIG. 2, the lateral hole 135 formed in the intermediate portion 132 of the stem 13 is in contact with the inner wall of the stem gasket 12, whereby the content passage 13 a and the internal space 11 a of the first housing 11 are separated. Blocked. On the other hand, as shown in FIG. 4, in the state where the stem 13 is pushed down, the hole 135 is removed downward from the stem gasket 12 and allows the content passage 13 a and the internal space 11 a of the first housing 11 to communicate with each other. In the case where the stem gasket 12 is made of an elastic material such as rubber, the stem gasket 12 is pushed downward by the lower end of the distal end portion 131, deforms, and comes into close contact with the stem 13, thereby The sealing property between the stem gasket 12 can be improved.

  A step is formed on the outer surface of the boundary between the intermediate portion 132 and the bottom portion 133 of the stem 13, while a rib 115 is formed inside the middle diameter portion 112 of the first housing 11. A spring 14 is mounted between them.

  As shown in FIG. 3, the bush 16 fitted in the internal space of the small-diameter portion 113 of the first housing 11 includes a cylindrical member 161 having a content passage 161a formed therein, and a flange formed at the tip thereof. Part 162. The tubular member 161 has a vertical groove formed on the outer surface thereof, whereby a gap 113 a through which a small amount of content passes is formed between the inner surface of the small diameter portion 113. The flange portion 162 projects from the lower end of the first housing 11 and functions as a valve seat 181 of the ball valve 17. Further, a notch 163 is formed at the end of the cylindrical member 161, and the content is not lost even when the content passage 161 a of the cylindrical member 161 is closed by the ball valve 17 as shown in FIG. 4. It can be moved between the outer peripheral surface of the bush (tubular member 161) 16 and the inner surface of the small-diameter portion 113 (113 a) through this notch 163.

  The second housing 15 includes a cylindrical portion 151 connected to the small-diameter portion 113 of the first housing 11, and a curved pipe portion in which a space 153 a that provides a curved content passage and accommodates the ball valve 17 is formed. 153 and a tube connecting portion 155 whose internal space communicates with the internal space 153a of the curved pipe portion 153. A tube 25 having an inner diameter substantially equal to the outer diameter of the tube connecting portion 155 is inserted and fixed. The curved pipe portion 153 has an inner space 153a that functions as a metering chamber, and an end portion on the tube connection portion 155 side has a shape that gradually decreases in diameter, and functions as a valve seat 182 of the ball valve 17.

  During the injection operation, the ball valve 17 moves between the upper and lower valve seats 181 and 182 by its own weight after the injection operation is completed (at the time of return) due to the pressure difference between the inside and the outside air pressure. For this reason, the thing of the weight which can raise by the said pressure difference and can fall by own weight is used. For example, a non-corrosive metal ball having a diameter of stainless steel or the like is used. The diameter of the ball valve 17 is designed to be slightly smaller than the inner diameter of the curved pipe portion 153. For example, in a metering valve device having an injection amount of about 0.4 ml, a ball valve of about 5/32 inches is used.

  When such a ball valve 17 moves from a position in contact with the lower valve seat 182 shown in FIG. 2 to a position in contact with the upper valve seat 181 shown in FIG. A certain amount of contents determined by the capacity of 153a flows to the first housing 11 side, and a certain amount of contents are injected. When the ball valve 17 moves along the curved pipe portion 153, the content moves upward even from a slight gap between the ball valve 17 and the inner surface of the curved pipe portion 153. The injection amount depends on the moving speed of the ball valve 17.

  Next, the curved pipe portion 153 constituting the fixed quantity chamber will be described in detail with reference to FIGS. 5A and 5B are diagrams showing a valve action portion (curved pipe portion), where FIG. 5A is a diagram showing an appearance, and FIG. 5B is a view of the curved pipe portion 153 as viewed from above. FIG. 6 is a diagram for explaining parameters defining the spiral.

  As shown in FIG. 5 (a), the curved pipe portion 153 has an upper portion where the valve seat 181 of the bush 16 (flange portion 162) is located and a lower portion where the valve seat 182 is formed. It has a shape in which a tube is wound spirally. In the example shown in FIG. 5A, the number of turns of the spiral is 2.5, but the number of turns may be 2 or less, 3 or more, and may not be an integer. In the example shown in FIG. 5B, the tube is curved so that the centers of the upper cylindrical portion 151 and the lower tube connecting portion 155 coincide with each other on the spiral trajectory. The end may be further curved so that the center of the portion 155 coincides with the spiral center 150.

In general, the shape of a helix is defined by two parameters, radius r and pitch p. In the case of a helix shape of a thick tube, the diameter of the tube is D, and the radius r is the helix center (FIG. 5 (b )) To the center 150 of the pipe part.
r ≧ D / 2 (1)
p ≧ D (strictly, p> D) (2)
It is necessary to satisfy. Expressions (1) and (2) are essential conditions for a spiral using a tube having a diameter D.

On the other hand, the capacity of the tube of the spiral portion is approximately the product of the length L of the tube of the spiral portion and the cross-sectional area (πD ² ) of the tube. As shown in FIG. 6, the length L of the tube is represented by the formula (3), where n is the number of turns of the spiral.
L = n√ {(2πr) ² + p ² } (3)
Assuming that the height of the spiral portion is H, the capacity can be increased by a factor of L / H by replacing the vertical cylinder of the height H with the tube of the spiral portion. That is, since H = np, the capacity of the tube increases by {square root} {(2πr / p) ² +1} times that in the case of a cylinder. For example, when r = D and p = D, the capacity of the tube is √ {(2π) ² +1} times (about 6.4 times) that of a cylinder. Therefore, by adjusting the number n or pitch p of the spirals and the radius r within the limits of the size (diameter and height) of the container to which the metering valve device of the present embodiment is applied and the manufacturing restrictions, the curved pipe is obtained. The capacity of the portion 153 can be increased and can be arbitrarily set.

From the equation (3), the capacity of the spiral portion (the rate of increase compared to the case of the cylinder) increases as the number of turns n and the radius r increases, but the inclination of the spiral defined by the following equation (4) θ decreases.
θ = tan ⁻¹ (p / 2πr) (4)
If the inclination of the spiral is too small, the ball valve 17 moving in the curved pipe portion 153 receives a frictional force between the ball valve 17 and the inner surface of the curved pipe portion 153 or a frictional force due to the viscosity of the contents. In addition, the frictional force may be larger than the inclination direction component of the force (pressure difference or gravity) applied to the ball valve 17 and may remain in the passage of the curved pipe portion 153. From such a viewpoint, the inclination θ is preferably 8 degrees or more, and more preferably 10 degrees or more. In the example described above, the inclination θ when r = D and p = D is about 9 degrees.
From the above, it is preferable that the parameters r and p that determine the helical shape satisfy the expressions (1) and (2) with respect to the diameter of the tube and set θ in the expression (4) to 8 degrees or more.

  The curved pipe portion 153 having the above-described shape can use a commercially available hard coiling tube (specific example: nylon coiling tube or the like) that satisfies the above conditions. Further, depending on the diameter of the tube, the radius of the spiral, etc., for example, a spiral tube formed in advance in a spiral shape and a cylindrical tube may be connected by a joint tube.

Next, the operation of the metering valve device of the present embodiment having the above-described configuration will be described.
First, in the stationary state shown in FIG. 2, the stem 13 is urged upward by the spring 14, and the intermediate portion 132 abuts against the stem gasket 12 at the stepped portion with the tip portion 131, and the horizontal hole formed in the intermediate portion 132. 135 is closed by the stem gasket 12, and the content passage 13 a of the stem 13 communicating with the outside and the internal space 11 a of the first housing 11 are blocked. At this time, the internal space 11a of the first housing 11 and the internal space (including the metering chamber) of the second housing 15 are substantially filled with the contents, and the ball valve 17 has a valve seat at the bottom of the metering chamber due to its own weight. 182 to prevent the metering chamber and the container 20 from communicating with each other. This prevents the contents from flowing back to the container 20 from the quantitative chamber due to the pressure of the gas (liquefied gas) generated from the volatile components contained in the contents.

  Next, when the push button 23 fixed to the distal end of the stem 13 is operated and the stem 13 is pushed down against the elastic force of the spring 14, the stem 13 is moved to the outer periphery of the distal end portion 131 as shown in FIG. 4. Is lowered while pushing down the stem gasket 12, the lateral hole 135 of the intermediate portion 132 is detached from the stem gasket 12, and the content passage 13 a of the stem 13 communicating with the outside communicates with the internal space 11 a of the first housing 11. Due to the difference between the external air pressure and the internal pressure of the container that is higher than the external air pressure by the volatile component gas in the content, the content in the container 21 pushes up the ball valve 17 and flows into the metering chamber. As a result, the ball valve 17 ascends the spiral curved pipe portion 153 and stops contacting the fringe portion 162 (valve seat 181) of the bush 16 provided on the upper side of the curved pipe portion 153. While there is a pressure difference as described above, the ball valve 17 remains in the position of FIG.

  By the movement of the ball valve 17, the content in the spiral bent pipe portion 153 moves as a content passage through the space in the first housing 11, the lateral hole 135 of the stem 13 and the space 13 a in the stem. Sprayed from a nozzle 24 fixed to the tip of the button 23. The amount of injection at this time is determined by the volume of the metering chamber and the amount of a minute amount of content that passes between the ball valve 17 and the inner wall of the curved pipe portion 153 while the ball valve 17 moves. In the metering valve device of the present embodiment, the curved pipe portion 153 is spiraled to increase the capacity of the metering chamber itself, and the passage of the ball valve 17 that moves the curved pipe portion 153 is long. Since the time for moving between the valve seats can be lengthened, the amount of contents passing between the ball valve 17 and the inner wall of the curved pipe portion 153 is increased, and as a result, the injection amount can be increased.

  When the push-down operation of the push button 23 is finished, as shown in FIG. 7, the stem 13 returns to the state in which the intermediate portion 132 (stepped portion) of the stem is in contact with the stem gasket 12 by the urging force of the spring 14. 135 is closed by the stem gasket 12. At this time, the ball valve 17 is maintained at a position in contact with the valve seat 181 by the pressure in the container 21, but the notch 163 formed in the cylindrical member 161 of the bush 16, the bush 16, Since the inside of the container 21 and the internal space 11a of the first housing 11 communicate with each other by the gap 113a between the small diameter portion 113 of the one housing 11, the contents move through this gap, and the pressure difference between the two is Disappear. As a result, the ball valve 17 descends from the position in contact with the valve seat 181 by its own weight, and moves to the lower valve seat 182 through the curved pipe portion 153. During this time, the contents in the container 21 move to the metering chamber side through the gap between the ball valve 17 and the curved pipe portion 153, and when the ball valve 17 reaches the valve seat 182, the metering chamber is filled with the contents. It will be in the state.

  After that, the content in the space closed by the first housing 11 and the second housing 15 is vaporized by the injection gas contained therein, and a force for causing the content to flow back to the container 21 is generated. When 17 closely contacts valve seat 182, the contents remain in the quantitative chamber without flowing back into container 21. That is, it returns to the stationary state shown in FIG.

  According to the metering valve device of the present embodiment, the capacity of the metering chamber is increased by limiting the height and diameter of the metering chamber by making a part of the second housing part constituting the metering chamber a curved portion. can do. In particular, by making the bending portion into a shape in which the direction of bending changes three-dimensionally, for example, a spiral shape, the increase rate of the capacity can be increased, and an arbitrary capacity can be adjusted by adjusting the radius and pitch of the spiral. realizable. Further, by sharing parts other than the second housing part with the existing metering valve device, a metering valve device that can inject a desired amount of contents by replacing only the second housing part is provided. .

  The embodiment of the metering valve device of the present invention has been described above with reference to the drawings, but the metering valve device of the present invention is not limited to the above description and drawings, and various modifications can be made. For example, as the shape of the curved pipe portion, a horizontal U-shape or S-shape can be adopted in addition to the spiral shape.

  The metering valve device of the present invention and the aerosol spray container using the same are, for example, deodorants, cleaning agents, cleaning agents, antiperspirants, cooling agents, muscle anti-inflammatory agents, hair styling agents, hair treatment agents, hair dyes. , Hair restorer, cosmetics, shaving foam, food, pharmaceuticals, quasi-drugs, paints, horticultural solvents, repellents, laundry glue, fire extinguishing agents, adhesives, lubricants, etc.

DESCRIPTION OF SYMBOLS 10 ... Metering valve apparatus, 11 ... 1st housing, 11a ... space, 11b ... space, 111 ... Large diameter part of 1st housing, 112 ... Medium diameter of 1st housing 113, a small diameter portion of the first housing, 115, a rib portion, 12 ... a stem gasket, 13 ... a stem, 13a ... a content passage, 131 ... a tip portion of the stem, 132 ... Intermediate part of stem, 133 ... Bottom of stem, 135 ... Horizontal hole, 14 ... Spring, 15 ... Second housing (valve action part), 151 ... Cylindrical part, 153: Bent pipe part, 155 ... Tube connecting part, 16 ... Bush, 161 ... Cylindrical member, 162 ... Flange part, 163 ... Notch, 17 ... Ball valve , 181, 182 ... valve seat, 20 ... air zone Injection vessel, 21 ... container (container body), 22 ... mounting cap (lid), 23 ... push button, 24 ... nozzle, 25 ... tube.

Claims (8)

A metering valve device fixed to a lid of a container for storing contents,
A cylindrical housing having a space that doubles as a passage for the contents and a storage portion;
A stem partly located outside the housing and the rest located inside the housing and resiliently supported by the housing movably along an inner wall of the housing, A stem having a hole that communicates the space and the external space;
A valve action part provided in the passage of the contents of the housing,
The valve action part includes a pipe part having a fixed quantity chamber for storing a certain amount of the contents, a ball valve movably disposed in the pipe part, and valve seats provided at both ends of the fixed quantity chamber. , And the tube portion is formed with a curved portion between the both end portions. The metering valve device according to claim 1,
The metering valve device, wherein the bending portion of the pipe portion is a bending portion whose height monotonously decreases from one end to the other end of the metering chamber and whose bending direction changes three-dimensionally. The metering valve device according to claim 1,
The metering valve device, wherein the curved portion of the tube portion is spiral. The metering valve device according to claim 3,
The metering valve device according to claim 1, wherein the radius of the spiral of the curved portion is not more than four times the diameter of the tube portion. A metering valve device according to any one of claims 1 to 3,
The metering valve device, wherein the curved portion of the tube portion has a minimum inclination angle (an angle with respect to a horizontal plane) of 8 degrees or more. The metering valve device according to claim 1,
The diameter of the said pipe part is larger than the diameter of the said ball valve, and is 1.1 times or less of the diameter of a ball valve, The metering valve apparatus characterized by the above-mentioned. The metering valve device according to claim 1,
The housing includes a first housing that supports the stem, and a second housing that is coupled to the first housing and includes the pipe portion,
One of the valve seats provided at both ends of the metering chamber is provided at the end of the first housing, and the other of the valve seats is provided at an intermediate portion in the longitudinal direction of the second housing, and is continuous with the intermediate portion. And the cylindrical part connected to the said container is formed, The metering valve apparatus characterized by the above-mentioned. A container having a lid and storing an aerosol medicine; a metering valve device attached to the lid; and a push button having a spray port for the aerosol medicine and operating the metering valve device; An aerosol spray container provided,
An aerosol injection container comprising the metering valve device according to any one of claims 1 to 7 as the metering valve device.

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