JP4263901B2 - Valve mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a valve mechanism, and more particularly to a valve mechanism that can be suitably used for a fluid container.
[0002]
[Prior art]
As such a valve mechanism, for example, as described in Patent Document 1, a valve having a spherical valve body and a spring for biasing the valve body toward the valve seat is used.
[0003]
[Patent Document 1]
JP 2001-179139 A
However, such a valve mechanism using a spherical valve body and a spring tends to be expensive to produce. For this reason, a valve mechanism having a valve seat and a valve body that moves between a closed position in contact with the valve seat and an open position separated from the valve seat is generally used.
[0005]
[Problems to be solved by the invention]
In such a valve mechanism, it is preferable that the fluid can be reliably closed while having a simple configuration. Moreover, it is preferable to set it as the structure which can change arbitrarily the flow volume of the fluid which passes there according to the pressure provided to the fluid. However, the actual situation is that a valve mechanism having such requirements has not yet been provided.
[0006]
The present invention has been made in order to solve the above-described problems, and is capable of reliably closing a fluid while having a simple configuration, and the flow rate of the fluid passing therethrough according to the pressure applied thereto. An object of the present invention is to provide a valve mechanism that can arbitrarily change.
[0007]
[Means for Solving the Problems]
The invention according to claim 1, flexibility and a substantially circular conical valve portion of the hollow with the base and the valve member which is composed of an elastic body having a connecting portion for connecting the valve portion and the base And a bottomed cylindrical shape whose inner diameter is smaller than the maximum outer diameter of the valve portion in the valve member, the bottom portion is engaged with the base portion of the valve member, and the inner peripheral surface is the valve of the valve member And a support member in which a flow hole for passing a fluid is formed in a region on the bottom side of a contact region between the inner peripheral surface of the valve member and the valve portion of the valve member. When the fluid to which the pressure is applied is introduced, the maximum outer diameter of the valve portion is smaller than the inner diameter of the support member due to the flexibility of the valve portion in the valve member, and the valve portion is separated from the support member. by separation, the flow path of the fluid is formed, the inner circumferential surface of the support member, than the previous SL bottom And having a septum to as a tapered shape with its inside diameter becomes larger.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded view showing a tube type container to which a valve mechanism according to the present invention is applied, and FIGS. 2 and 3 are enlarged views showing a main part of the tube type container to which the valve mechanism according to the present invention is applied. It is.
[0009]
This tube-type container is used as a container for gels such as hair gels and cleansing gels used in the field of beauty, generally called gels, or cream-like products such as nutritional creams and massage creams. Is. In addition, you may use this tube type container as containers, such as a general chemical | medical agent, a solvent, or a foodstuff.
[0010]
In this specification, the term “fluid” includes a normal liquid, a high-viscosity liquid, a semi-fluid, or a gel or a cream-like substance obtained by solidifying a sol in a jelly form. However, the present invention is not limited to the valve mechanism that targets the fluid described above, but can be applied to a valve mechanism that targets the entire fluid including gas.
[0011]
The tube-type container includes a container main body 140, a lid member 110 attached to the upper portion of the container main body 140, and the valve mechanism 10.
[0012]
The container body 140 includes a fluid reservoir 142 for storing a fluid therein, a fluid discharge opening 141 formed at one end of the fluid reservoir 142, and an upper end of the opening 141. A flange portion 143 (see FIGS. 2 and 3) formed in the vicinity and a male screw portion 144 formed outside the opening portion 141 are provided. The flange portion 143 can be engaged with an engaging groove 35 in the connecting member 30 described in detail later. For this reason, the valve mechanism 10 is configured to be fixed in the opening 141 in the container main body 140 through the engagement groove 35.
[0013]
The container main body 140 has a configuration in which a synthetic resin alone or a synthetic resin and aluminum are laminated, and has an elastic restoring force for returning to the original shape when the pressing force applied thereto is released.
[0014]
The lid member 110 includes a lid body 111 and a female screw portion 112 formed at the center of the lid body 111. The female screw portion 112 in the lid body 111 is configured to be screwed with the male screw portion 144 in the container main body 140.
[0015]
In the tube-type container having the above-described configuration, when the fluid is discharged from the container, the fluid in the fluid reservoir 142 is pressurized by pressing the fluid reservoir 142 in the container body 140. Add. In this state, the valve mechanism 10 composed of the valve member 20 and the support member 30 is opened, and the fluid in the fluid reservoir 142 is discharged to the outside through the valve mechanism 10 as shown in FIG. Is done.
[0016]
On the other hand, when the pressing force to the fluid reservoir 142 is released after the required amount of fluid is discharged, the fluid in the fluid reservoir 142 is decompressed by the elastic restoring force of the container body 140, and the fluid Air tends to flow backward from the discharge opening 141 toward the fluid reservoir 142.
[0017]
However, in this tube-type container, the flow path of the fluid is closed by the action of the valve mechanism 10 including the valve member 20 and the support member 30. For this reason, it becomes possible to prevent backflow of air effectively.
[0018]
Next, the configuration of the valve mechanism 10 according to the present invention will be described. The valve mechanism 10 includes a valve member 20 and a valve seat member 30.
[0019]
FIG. 4 is an explanatory view showing the valve member 20 constituting the valve mechanism 10 according to the present invention. 4A shows an upper surface of the valve member 20, FIG. 4B shows a longitudinal section of the valve member 20, and FIG. 4C shows a side surface of the valve member 20.
[0020]
The valve member 20 is a resilient member having flexibility, as shown in FIG. 4, a hollow substantially circular conical valve portion 21, coupling for connecting the base 23, and a valve portion 21 and the base 23 Part 22.
[0021]
FIG. 5 is an explanatory view showing a support member 30 constituting the valve mechanism 10 according to the present invention. 5A shows a longitudinal section of the support member 30, FIG. 5B shows a side surface of the support member 30, and FIG. 5C shows a bottom surface of the support member 30.
[0022]
As shown in FIG. 5, the support member 30 has a bottomed cylindrical shape whose inner diameter is smaller than the maximum outer diameter of the valve portion 21 in the valve member 20, and is an inner peripheral surface that contacts the valve portion 21 of the valve member 20. 32 and an engaging portion 33 that engages with the base portion 23 of the valve member 20 at the bottom 34 thereof. The inner peripheral surface 32 of the support member 30 has a tapered shape whose inner diameter increases as the distance from the bottom portion 34 increases. A fluid passage passage hole 31 is formed in a region closer to the bottom 34 than a contact region between the inner peripheral surface 32 of the support member 30 and the valve portion 21 of the valve member 20. The valve member 20 is fixed to the support member 30 by engaging the engagement portion 34 of the support member 30 with the base portion 23 of the valve member 20.
[0023]
In addition, as a material of the valve member 20, for example, rubber such as silicon rubber or soft resin such as soft polyethylene can be used. Further, as the material of the support member 30, a hard resin such as hard polyethylene can be used. These valve member 20 and support member 30 are produced by injection molding or the like.
[0024]
In the valve mechanism 10 having such a configuration, when pressure is applied to the fluid in the fluid reservoir 142 by pressing the fluid reservoir 142 of the container body 140 shown in FIG. A fluid to which more pressure is applied flows into the support member 30. Thereby, the valve member 20 receives the pressure of the fluid, and the maximum outer diameter of the valve portion 21 becomes smaller than the inner diameter of the support member 30 due to the flexibility of the valve portion 21 in the valve member 20. For this reason, the flow path of the fluid is formed when the valve portion 21 is separated from the inner peripheral surface 32 of the support member 30. On the other hand, when the pressing force to the fluid reservoir 142 is released, the inner peripheral surface 32 of the support member 30 comes into contact with the valve portion 21 of the valve member 20 again due to the elastic restoring force of the valve portion 21. Thereby, the intrusion of air into the fluid reservoir 142 can be prevented.
[0025]
In the valve mechanism 10, the maximum outer shape of the valve portion 21 changes according to the pressing force to the fluid storage portion 142, that is, the pressure applied to the valve mechanism 10, and the fluid passing through the valve mechanism 10 It becomes possible to arbitrarily change the flow rate. Therefore, when a normal liquid is used as the fluid, it is possible to discharge the liquid one by one by applying a small pressure to the liquid in the fluid reservoir 142.
[0026]
Further, the pressure applied to the fluid in the fluid reservoir 142 and the discharge of the fluid by changing the thickness and maximum outer shape of the valve portion 21, the inner diameter of the support member 30, or the material (hardness) thereof. You may make it adjust the relationship with quantity.
[0027]
The reason why the inner peripheral surface 32 of the support member 30 has a tapered shape whose inner diameter increases as the distance from the bottom 34 increases is as follows. That is, even if the deformation amount of the valve portion 21 is very small, when the support member 30 having the tapered shape as described above is adopted, the valve portion 21 itself having elasticity expands to have a tapered shape. This is because it is possible to effectively secure a gap for the fluid to be discharged as compared with the case where the fluid is not used.
[0028]
【The invention's effect】
According to the first aspect of the present invention, when the fluid to which pressure is applied from the flow hole is introduced, the maximum outer diameter of the valve portion is larger than the inner diameter of the support member due to the flexibility of the valve portion in the valve member. Since the flow path of the fluid is formed by the valve portion being separated from the support member by being smaller, the fluid can be reliably closed even with a simple configuration, and the fluid is applied thereto. It becomes possible to arbitrarily change the flow rate of the fluid passing therethrough according to the pressure.
[0029]
Further, according to the invention described in claim 1 , since the inner peripheral surface of the support member has a tapered shape in which the inner diameter increases as the distance from the bottom portion increases, the amount of deformation of the valve portion is small. However, it is possible to effectively secure a gap for discharging the fluid.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an exploded tube type container to which a valve mechanism according to the present invention is applied.
FIG. 2 is an enlarged view showing a main part of a tube type container to which the valve mechanism according to the present invention is applied.
FIG. 3 is an enlarged view showing a main part of a tube-type container to which the valve mechanism according to the present invention is applied.
FIG. 4 is an explanatory view showing a valve member 20 constituting the valve mechanism 10 according to the present invention.
FIG. 5 is an explanatory view showing a support member 30 constituting the valve mechanism 10 according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Valve mechanism 20 Valve member 21 Valve part 22 Connection part 23 Base part 30 Support member 31 Flow hole 32 Inner peripheral surface 33 Engagement part 34 Bottom part 35 Engagement groove 110 Lid member 111 Lid body 112 Female screw part 140 Container main body 141 Opening part 142 Fluid storage part 143 Flange part 144 Male thread part

Claims (1)

Flexibility and a substantially circular conical valve portion of the hollow with a base, a valve member which is composed of an elastic body having a connecting portion for connecting the valve portion and the base portion,
The valve member has a bottomed cylindrical shape whose inner diameter is smaller than the maximum outer diameter of the valve portion in the valve member, the bottom portion engages with the base portion of the valve member, and the inner peripheral surface thereof is the valve portion of the valve member. A support member having a flow hole for passing a fluid in a region closer to the bottom than a contact region between the inner peripheral surface of the valve member and the valve portion of the valve member;
When a fluid to which pressure is applied through the flow hole is introduced, the maximum outer diameter of the valve portion becomes smaller than the inner diameter of the support member due to the flexibility of the valve portion in the valve member. Is separated from the support member to form a fluid flow path,
The inner circumferential surface of the support member, the valve mechanism, characterized in that it has a more tapered shape whose inner diameter becomes larger away from the front Symbol bottom.

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