JP2022153001A - Pressure control valve - Google Patents

Abstract

To provide a pressure control valve enabling adjustment of a pressure inside a container and easy recognition on whether a through hole formed on a lid of the container is closed or not.SOLUTION: A pressure control valve 10 comprises a main shaft part 20 and a top surface part 30 connected to the main shaft part 20. The main shaft part 20 extends in a longitudinal direction, and has three projection parts 21 projecting in a direction substantially orthogonal to the longitudinal direction. The main shaft part 20 has a gap forming region 20B, the main shaft part 20 is inserted through a through hole 51A formed in a lid 51 of a sealed container 50, and a gap is formed between the gap forming region 20B and the edge of the through hole 51A. When the three projection parts 21 are in contact with the outer surface of the lid 51, the entire convex part 31 of the top surface part 30 can be separated from the lid 51, and this state can be stably maintained.SELECTED DRAWING: Figure 4

Description

The present invention relates to pressure regulating valves. More specifically, it relates to a pressure control valve used in a container for storing roasted coffee beans, for example.

Roasted coffee beans contain a lot of carbon dioxide, and little by little they release carbon dioxide, or carbon dioxide gas.
As a result, when coffee beans are placed in a container and stored with a lid, the released carbon dioxide causes the pressure inside the container to rise.
Therefore, unless the carbon dioxide inside the container is appropriately released to the outside of the container, there is a problem that the cover will come off due to the increased pressure inside the container.

Therefore, various techniques have been proposed to appropriately reduce the increased pressure inside the container.
For example, Patent Literature 1 describes a pressure regulating valve as shown in FIG.

That is, the pressure regulating valve 201 described in Patent Document 1 includes a columnar portion 220, a reversibly opening and closing cap portion 210 attached to one end of the columnar portion 220, and a truncated cone portion attached to the other end of the columnar portion 220. It has a shaped flange 230 .

Also, the flange portion 230 is pushed into the valve hole 302A formed in the upper lid 302 of the container, and the columnar portion 220 is inserted through the valve hole 302A, so that the pressure regulating valve 201 is attached to the upper lid 302 of the container.

A vertical groove 221 is provided on the side surface of the columnar portion 220 , and a lateral groove 231 is provided on the upper surface of the flange portion 230 .
Then, when gas is generated in the container and the pressure increases, the gas is passed through the lateral grooves 231 and the longitudinal grooves 221 to the inner side 211 of the cap portion 210 .
As a result, pressure is passed to the inside 211 of the cap portion 210, and when the pressure exceeds a certain pressure at which the cap portion 210 opens, the cap portion 210 deforms to open and communicate with the outside air to adjust the pressure. .

Japanese Patent Application Laid-Open No. 2004-190802

The pressure regulating valve described in Patent Document 1 can adjust the pressure inside the container by deforming the cap to open or close, but the pressure regulating valve is formed in the valve hole, that is, the lid of the container. However, there is a problem that it is difficult to recognize whether or not the through hole is blocked.

Here, when the pressure regulating valve blocks the through hole, it is difficult to open the lid of the container. If it can be determined whether the through hole is in communication with the outside air, it is possible to avoid the act of desperately trying to open the cover when the pressure regulating valve blocks the through hole. was rare.

SUMMARY OF THE INVENTION The present invention has been devised in view of the above points, and provides a pressure regulating valve that can regulate the pressure inside a container and that is easy to recognize whether or not the through hole formed in the lid of the container is closed. intended to provide

In order to achieve the above object, the pressure regulating valve of the present invention extends in the longitudinal direction, is insertable through a through hole formed in the lid of a container, and has a gap between the rim of the through hole. A main shaft portion capable of forming a gap and having a projection portion projecting in a direction substantially perpendicular to the longitudinal direction of the main shaft portion and connected to one end of the main shaft portion in the longitudinal direction. It extends in a direction substantially perpendicular to the longitudinal direction and has a convex portion, which is a predetermined distance from a connection point with the main shaft portion in a direction substantially perpendicular to the longitudinal direction. The protrusion projects in the same direction as the longitudinal direction from a position about the same distance as the longitudinal direction, and the position of the protrusion in the same direction as the longitudinal direction is closer to the connecting point than the position of the protrusion in the same direction as the longitudinal direction. and an elastically deformable top surface portion.

Here, the "predetermined distance" means a distance at which the protrusion can contact the lid when the main shaft is inserted into the through hole of the lid of the container.
a main shaft extending in the longitudinal direction and capable of being inserted into a through hole formed in the lid of the container and capable of forming a gap with the rim of the through hole; It is connected and extends in a direction substantially perpendicular to the longitudinal direction, and has a convex portion. Projecting in the same direction as the longitudinal direction from a position about a distance away, the convex portion contacts the outer surface of the lid when the main shaft portion is inserted into the through hole of the lid of the container by the elastically deformable top surface portion. The pressure regulating valve of the present invention can seal the container, and the main shaft part can form a gap with the edge of the through hole, so that at least a part of the convex part is separated from the lid by elastic deformation. By communicating the outside of the container with the inside of the container, the pressure inside the container can be reduced.

In addition, the position of the protrusion in the same direction as the longitudinal direction of the main shaft portion, which has a protrusion, and the protrusion protrudes in a direction substantially orthogonal to the longitudinal direction, is the position of the protrusion in the same direction as the longitudinal direction. A state in which at least a part of the convex portion of the top surface is separated from the outer surface of the lid when the protrusion is brought into contact with the outer surface of the lid of the container by the top surface that is closer to the connection point than the top surface. can be maintained.

In addition, the position of the protrusion in the same direction as the longitudinal direction of the main shaft portion, which has a protrusion, and the protrusion protrudes in a direction substantially orthogonal to the longitudinal direction, is the position of the protrusion in the same direction as the longitudinal direction. When the pressure regulating valve of the present invention is attached to the lid of the container, the convex portion is located and the imaginary plane spreads in the direction substantially orthogonal to the longitudinal direction by the top surface portion, which is closer to the connection point than Then, the lid of the container is positioned between the imaginary plane on which the projection is positioned and which extends in a direction substantially orthogonal to the longitudinal direction.
Then, when both the protrusion and the protrusion are pressed against the lid, elastic deformation of the top surface causes the protrusion to return to its original position, that is, stress is generated. Become. As a result, it is easier to bring the protrusions into close contact with the lid of the container than in the configuration without the protrusions, so that the sealed state can be strengthened.

Further, in the pressure regulating valve of the present invention, the projections are arranged in an annular shape centering on the connection point between the main shaft portion and the top surface portion, the main shaft portion has a plurality of projections, and the plurality of projections are connected to the main shaft. The positions of the portions in the longitudinal direction may be substantially the same, and the protrusions may be positioned at equal intervals in the circumferential direction centered on the longitudinal direction.

In this case, the entire convex portion of the top surface can be separated from the outer surface of the lid of the container, and this state can be easily maintained stably. That is, the open state can be more clearly indicated.
Further, when the pressure regulating valve of the present invention is in a state in which the through hole is blocked, that is, in a closed state, the stress of the convex portion is uniformly generated in the circumferential direction centered on the longitudinal direction of the main shaft portion, and the stress is uniformly generated in the circumferential direction. can strengthen the sealing condition.

Further, in the pressure regulating valve of the present invention, the protrusion of the main shaft portion can be elastically deformed, and the outer shape of the protrusion can be curved.

In this case, when the top surface of the pressure regulating valve of the present invention with the main shaft inserted through the through hole of the lid of the container is pulled or pushed, the protrusion hits the edge of the through hole. However, since it becomes easier to get over the edge, it is possible to switch between the state in which the pressure regulating valve of the present invention does not block the through hole, that is, the open state, and the state in which the pressure regulating valve of the present invention blocks the through hole, that is, the closed state. can be easily felt by the user's hand.

Further, in the pressure regulating valve of the present invention in which the protruding portion is elastically deformable, the first imaginary plane on which the protruding portion of the top surface portion is positioned and which extends in a direction substantially orthogonal to the longitudinal direction of the main shaft portion and The distance between the protrusion of the main shaft portion and the second virtual plane extending in the same direction as the direction in which the first virtual plane extends may be shorter than the thickness of the lid. can.

In this case, when the pressure regulating valve of the present invention is attached to the lid of the container, the lid of the container is sandwiched between the projection of the top surface and the projection of the main shaft, and the projection and the projection are pushed by the lid, The elastic deformation of the top surface causes the projection to return to its original position, that is, stress, and the elastic deformation of the projection causes the projection to return to its original position.
Both the stress of the projection and the stress of the projection are forces that push the lid and push the lid from opposite sides. It can be tightly attached to the lid of the container, and the sealed state can be further strengthened.

Further, in the pressure regulating valve of the present invention, the top surface portion has a grip portion protruding in a direction opposite to the projecting direction of the projection from the opposite side of the top surface portion to the side on which the projection is provided, On the opposite side to the side on which the convex portion is provided, a central recessed portion is formed at a location corresponding to the connecting portion with the main shaft portion, and is recessed toward the main shaft portion. On the side opposite to the side, there may be formed a concave portion extending so as to connect the central concave portion and the edge of the top surface portion and concave in the same direction as the central concave portion.

In this case, the grip allows the user to grip the grip and lift at least a portion of the top surface, thereby making it easier to separate at least a portion of the protrusions from the outer surface of the lid of the container.
In addition, the central recessed portion and the recessed portion facilitate elastic deformation of the top surface portion, making it easy for at least a portion of the convex portion to separate from the outer surface of the lid of the container.

In addition, the pressure regulating valve of the present invention is connected to the other end opposite to the one end in the longitudinal direction of the main shaft, and extends in a direction substantially orthogonal to the same direction as the longitudinal direction of the main shaft. , the position of the tip extending in a direction substantially perpendicular to the longitudinal direction of the main shaft is farther from the main shaft than the position of the protrusion in the direction substantially perpendicular to the longitudinal direction of the main shaft and the distance between the second virtual plane and a third virtual plane on which the tip is located and which extends in the same direction as the direction in which the second virtual plane extends is the distance between the first virtual plane and A configuration may be adopted in which a bottom surface portion that is approximately the same as the distance from the second virtual plane and that is elastically deformable is further provided.

In this case, when the main shaft portion moves in the same direction as the longitudinal direction, and the projection portion of the main shaft portion moves over the edge of the through-hole of the lid of the container and moves to the outside of the lid, the projection portion of the main shaft portion and the bottom surface of the container then move to the outside of the lid. The lid of the container is sandwiched between the parts, and the protrusion and the bottom part are pushed by the lid, and the force that causes the protrusion to return to its original position due to the elastic deformation of the protrusion, that is, the stress, and the elastic deformation of the bottom part causes the bottom surface to move. A force is generated that causes the part to return to its original position.
Both the stress of the projection and the stress of the bottom face are forces that push the lid and push the lid from opposite sides. It is possible to stabilize the state in which the convex portion is separated from the outer surface of the lid or the state in which the entire convex portion of the top surface portion is separated from the outer surface of the lid.

In addition, after the protrusion of the main shaft portion moves over the edge of the through hole of the lid of the container and moves to the outside of the lid, the bottom portion becomes difficult to get over the edge of the through hole, and the pressure regulating valve of the present invention does not penetrate through the lid. Hard to get out of the hole.
That is, the position of the tip of the bottom surface extending in the direction substantially perpendicular to the longitudinal direction of the spindle is higher than the position of the protrusion in the direction substantially perpendicular to the longitudinal direction of the spindle. , is located far away from the main shaft.

Further, in order to achieve the above object, the pressure regulating valve of the present invention extends in a longitudinal direction, is insertable into a through hole formed in a lid of a container, has a plurality of protrusions, and has a plurality of The protrusions protrude in a direction substantially orthogonal to the longitudinal direction, the positions of the plurality of protrusions in the same longitudinal direction are substantially the same, and the same in the circumferential direction centered on the longitudinal direction. The protrusions are positioned at equal intervals from each other, the protrusions are elastically deformable, the outer shape of the protrusions is curved, and the edges of the through holes are aligned in the circumferential direction centered on the longitudinal direction. A gap forming region where a gap can be formed between and a projection region where the projection is partly present alternately, the elastically deformable main shaft and the longitudinal direction of the main shaft It is connected to one end of the direction and extends in a direction substantially orthogonal to the same direction as the longitudinal direction. It protrudes in the same direction as the longitudinal direction from a position separated by a predetermined distance in a direction substantially orthogonal to the direction, and is arranged annularly around the same connection point, and is convex in the same direction as the longitudinal direction. The position of the portion is closer to the connection point than the position of the projection in the same direction as the longitudinal direction, and the protrusion is positioned and is substantially orthogonal to the same direction as the longitudinal direction of the main shaft portion. The distance between the first imaginary plane extending in the direction and the second imaginary plane on which the protrusion of the main shaft portion is located and extending in the same direction as the first imaginary plane is the above-mentioned A step is formed between the elastically deformable top surface portion which is shorter than the thickness of the lid and the projecting region at the other end opposite to the one end in the longitudinal direction of the main shaft portion. , extending in a direction substantially orthogonal to the same longitudinal direction of the main shaft portion, and extending in a direction substantially orthogonal to the same longitudinal direction of the main shaft portion is located farther from the main shaft than the position of the protrusion in the direction substantially orthogonal to the longitudinal direction of the main shaft, and the tip is positioned and the second imaginary The distance between the third virtual plane extending in the same direction as the direction in which the plane extends and the second virtual plane is approximately the distance between the first virtual plane and the second virtual plane. and an elastically deformable bottom portion.

Here, the "predetermined distance" means a distance at which the protrusion can contact the lid when the main shaft is inserted into the through hole of the lid of the container.
a main shaft extending in the longitudinal direction, capable of being inserted into a through hole formed in the lid of the container, and having a gap forming region, which is a region capable of forming a gap with the same edge of the through hole; It is connected to one end in the longitudinal direction of the main shaft and extends in a direction substantially orthogonal to the same longitudinal direction. Projecting in the same direction as the longitudinal direction from a position separated by a predetermined distance in a direction substantially orthogonal to the same direction as the longitudinal direction, the main shaft portion is formed as a through hole of the lid of the container by the elastically deformable top surface portion. When the pressure regulating valve of the present invention is in a state of being inserted into the through-hole, the projection abuts against the outer surface of the lid so that the pressure regulating valve of the present invention can seal the container, and the main shaft forms a gap with the edge of the through hole. Since it is possible, at least a part of the convex portion is elastically deformed and separated from the lid to allow communication between the outside of the container and the inside of the container, thereby reducing the pressure inside the container.

In addition, a main shaft portion having a plurality of protrusions, the positions of the plurality of protrusions in the longitudinal direction being substantially the same, and the protrusions being positioned at equal intervals in the circumferential direction centered on the longitudinal direction; The position of the protrusion in the same direction as the longitudinal direction is closer to the connection point than the position of the protrusion in the same direction as the longitudinal direction. In addition, the entire convex portion of the top surface can be separated from the outer surface of the lid of the container, and this state can be easily maintained stably, and the pressure regulating valve of the present invention does not block the through hole, that is, The open state can be more clearly indicated.

In addition, a plurality of protrusions are provided, and the plurality of protrusions protrude in a direction substantially orthogonal to the longitudinal direction. When the pressure regulating valve of the present invention is attached to the lid of the container, the convex portion is positioned and the convex portion is positioned substantially perpendicular to the longitudinal direction due to the top surface portion, which is closer to the connection point than the position of the projection portion. The lid of the container is positioned between the widened imaginary plane and the imaginary plane on which the projection is located and which is widened in a direction substantially orthogonal to the longitudinal direction.
Then, when both the protrusion and the protrusion are pressed against the lid, elastic deformation of the top surface causes the protrusion to return to its original position, that is, stress is generated. Become. As a result, it is easier to bring the protrusions into close contact with the lid of the container than in the configuration without the protrusions, so that the sealed state can be strengthened.
Further, when the pressure regulating valve of the present invention is in a state in which the through hole is blocked, that is, in a closed state, the stress of the convex portion is uniformly generated in the circumferential direction centered on the longitudinal direction of the main shaft portion, and the stress is uniformly generated in the circumferential direction. can strengthen the sealing condition.

In addition, since the protrusion is elastically deformable and the outer shape of the protrusion is curved, the top surface of the pressure regulating valve of the present invention in which the main shaft is inserted into the through hole of the lid of the container can be pulled. When the pressure regulating valve of the present invention does not block the through hole, i.e., the open state, and the pressure regulating valve of the present invention, the pressure regulating valve of the present invention does not close the through hole because the protruding portion easily overcomes the rim of the through hole even when it is hit or the top surface portion is pushed. It is possible to make it easier for the user to feel the switching between the state in which the pressure regulating valve blocks the through hole, that is, the closed state.

In addition, the main shaft portion in which the gap forming regions and the protruding regions exist alternately allows the gas inside the container to be evenly released to the outside of the container from the gap between the edge of the through-hole and the gap forming regions. Also, the entire convex portion of the top surface can be separated from the outer surface of the lid of the container, and this state can be easily maintained stably, making it even clearer that the pressure regulating valve of the present invention is in the open state. can be shown in

A first imaginary plane on which the protrusions are positioned and which extends in a direction substantially perpendicular to the longitudinal direction of the main spindle, and a first imaginary plane on which the projections of the main spindle are positioned and expands. Since the distance between the direction and the second imaginary plane extending in the same direction is shorter than the thickness of the lid, when the pressure regulating valve of the present invention is attached to the lid of the container, the convex portion of the top surface portion and the protrusion of the main shaft portion, the protrusion and the protrusion are pushed by the lid, and the protrusion returns to its original position due to the elastic deformation of the top surface, that is, the force, that is, the stress and the protrusion A force that causes the projection to return to its original position is generated by the elastic deformation of the projection.
Both the stress of the projection and the stress of the projection are forces that push the lid and push the lid from opposite sides. It can be tightly attached to the lid of the container, and the sealed state can be further strengthened.

In addition, it is connected to the other end opposite to the one end in the longitudinal direction of the main shaft so as to form a step with the projection region, and is substantially orthogonal to the same direction as the longitudinal direction of the main shaft. The position of the tip extending in the direction substantially perpendicular to the longitudinal direction of the main shaft portion is higher than the position of the protrusion in the direction substantially perpendicular to the longitudinal direction of the main shaft portion. The distance between the second virtual plane and a third virtual plane that is located away from the part and spreads in the same direction as the direction in which the second virtual plane spreads while the tip is located is the first The distance between the imaginary plane and the second imaginary plane is substantially the same, and the elastically deformable bottom portion causes the main shaft portion to move in the same direction as the longitudinal direction, and the protrusion of the main shaft portion moves in the direction of the lid of the container. When it moves over the edge of the through-hole and moves to the outside of the lid, the lid of the container is then sandwiched between the protrusion and the bottom of the main shaft, and the protrusion and the bottom are pressed by the lid, and the elasticity of the protrusion is increased. A force that causes the protrusion to return to its original position due to deformation, that is, a stress, and a force that causes the bottom portion to return to its original position due to elastic deformation of the bottom portion are generated.
Both the stress of the projection and the stress of the bottom face are forces that push the lid and push the lid from opposite sides. It is possible to stabilize the state in which the convex portion is separated from the outer surface of the lid or the state in which the entire convex portion of the top surface portion is separated from the outer surface of the lid.

In addition, with such a bottom portion, after the projection of the main shaft portion moves over the edge of the through hole of the lid of the container and moves to the outside of the lid, the bottom portion becomes difficult to climb over the edge of the through hole. The pressure regulating valve becomes difficult to fall out of the through hole of the lid.
That is, the position of the tip of the bottom surface extending in the direction substantially perpendicular to the longitudinal direction of the spindle is higher than the position of the protrusion in the direction substantially perpendicular to the longitudinal direction of the spindle. , is located far away from the main shaft.

In addition, the bottom portion connected to the other end of the main shaft portion forms a step between the protrusion and the bottom portion so that the protrusion and the bottom portion are arranged in a straight line. , the lid of the container can be stably and easily sandwiched between the protrusion and the bottom surface.

In addition, the elastically deformable protrusion, the elastically deformable main shaft, the elastically deformable top surface, and the elastically deformable bottom surface make the pressure regulating valve of the present invention integrated with an elastically deformable material. can be molded into

The pressure regulating valve according to the present invention can regulate the pressure inside the container, and it is easy to recognize whether or not the through hole formed in the lid of the container is closed.

It is a schematic front view (a) showing an example of a pressure regulating valve to which the present invention is applied, and a schematic plan view (b) showing an example of a pressure regulating valve to which the present invention is applied. It is a schematic bottom view of the pressure control valve to which this invention shown in FIG. 1 is applied. FIG. 2 is a schematic cross-sectional view showing a cross section taken along line AA of FIG. 1(b); FIG. 4 is a schematic cross-sectional view when the pressure regulating valve to which the present invention is applied attached to the lid of the sealed container is in a closed state; FIG. 4 is a schematic cross-sectional view showing an example of how the closed pressure regulating valve according to the present invention lowers the internal pressure of the sealed container. FIG. 4 is a schematic cross-sectional view when the pressure regulating valve to which the present invention is applied attached to the lid of the sealed container is in an open state; 1 is a schematic cross-sectional view of a conventional pressure regulating valve attached to a container lid; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings for understanding of the present invention.
FIG. 1(a) is a schematic front view showing an example of a pressure regulating valve to which the present invention is applied, and FIG. 1(b) is a schematic plan view showing an example of a pressure regulating valve to which the present invention is applied.
2 is a schematic bottom view of the pressure regulating valve to which the present invention shown in FIG. 1 is applied.
FIG. 3 is a schematic cross-sectional view showing the AA cross section of FIG. 1(b).

A pressure regulating valve 10 of the present invention shown in FIG. 1 is used, for example, in a sealed container for storing roasted coffee beans.
Specifically, the pressure regulating valve 10 of the present invention is used by partially inserting it into a through hole formed in the lid of a sealed container.

A pressure regulating valve 10 of the present invention shown in FIG. 1 includes a main shaft portion 20 made of silicone rubber.
Here, the main shaft portion 20 extends in the longitudinal direction and can be inserted through a through hole formed in the lid of the sealed container.
Further, since the main shaft portion 20 is made of silicone rubber, it can be elastically deformed.

Further, the main shaft portion 20 has three protrusions 21 .
The three protruding portions 21 protrude in a direction substantially perpendicular to the longitudinal direction of the main shaft portion 20 .

Moreover, the positions of the three protrusions 21 in the longitudinal direction of the main shaft portion 20 are substantially the same.
In addition, the three protrusions 21 are positioned at equal intervals in the circumferential direction around the longitudinal direction of the main shaft portion 20 .
That is, in the pressure regulating valve 10 of the present invention shown in FIG. 1, the three projections 21 are positioned at positions with a central angle of 120 degrees centering on the longitudinal direction of the main shaft 20 .

Further, the main shaft portion 20 has three protruding regions 20A and three gap forming regions 20B.
Here, the protruding region 20A is a region partially having the protruding portion 21, and the gap forming region 20B is a region in which a gap can be formed with the edge of the through hole formed in the lid of the sealed container. .

In addition, the three protruding regions 20A and the three gap forming regions 20B alternately exist in the circumferential direction around the longitudinal direction of the main shaft portion 20. As shown in FIG.

Further, the projection region 20A is configured by a substantially flat surface extending in the longitudinal direction of the main shaft portion 20, and a projection portion 21 is provided on a part thereof.
Moreover, the projecting region 20A is oriented radially about a virtual central axis (not shown) extending in the longitudinal direction of the main shaft portion 20. As shown in FIG.

Further, the gap forming region 20B is connected to the projecting region 20A substantially orthogonally, and is composed of two substantially flat surfaces extending in the longitudinal direction of the main shaft portion 20. As shown in FIG.
That is, the gap forming region 20B is composed of two substantially flat surfaces connected to two different projecting regions 20A.
In addition, in the gap forming region 20B, the virtual circle centered on the virtual center axis of the main shaft portion 20, where the connection portion between the two substantially flat surfaces is located, is the virtual center of the main shaft portion 20 where the projection region 20A is located. Smaller than an imaginary circle centered on the axis.

Therefore, when the main shaft portion 20 is inserted into the through-hole of the lid, the projection area 20A is in contact with the edge of the through-hole or is located near the edge of the through-hole, whereas the gap forming area 20B is located away from the edge of the through hole, and the gap forming region 20B can form a gap with the edge of the through hole of the lid.

Also, the three protrusions 21 are made of silicone rubber and are elastically deformable.
Also, the three protrusions 21 are hemispherical and have a curved outer shape.

Moreover, in the circumferential direction around the longitudinal direction of the main shaft portion 20, the projection regions 20A and the gap forming regions 20B alternately exist.

Moreover, the pressure regulating valve 10 of the present invention includes a top surface portion 30 made of silicone rubber.
Here, the top surface portion 30 is connected to one longitudinal end of the main shaft portion 20 .
Further, the top surface portion 30 extends in a direction substantially orthogonal to the longitudinal direction of the main shaft portion 20 .

Further, as shown in FIG. 1(b), the outer shape of the top surface portion 30 is substantially circular, but it is needless to say that the outer shape is not limited to this shape.
Further, since the top surface portion 30 is made of silicone rubber, it can be elastically deformed.

Moreover, the top surface portion 30 has a convex portion 31 .
Here, the convex portion 31 protrudes from a predetermined position on the top surface portion 30 in the same direction as the longitudinal direction of the main shaft portion 20 .
That is, the predetermined position of the top surface portion 30 where the convex portion 31 protrudes is in a direction substantially perpendicular to the longitudinal direction of the main shaft portion 20 from the joint portion 36 of the top surface portion 30 with the main shaft portion 20. It is a position separated by a predetermined distance.

Further, the "predetermined distance" means the distance that the projection 31 can contact the lid when the main shaft portion 20 is inserted into the through hole formed in the lid of the sealed container.
Moreover, since the convex portion 31 of the top surface portion 30 abuts against the lid, the pressure regulating valve 10 of the present invention does not fall into the container body through the through hole.

Further, the projections 31 are arranged in an annular shape with the connection point 36 as the center.
A substantially flat pressure-receiving region 32 is provided between the convex portion 31 and the connecting portion 36 .
That is, the pressure-receiving regions 32 are also arranged in an annular shape with the connection point 36 as the center.

Moreover, the convex portion 31 protrudes from the same plane as the pressure receiving region 32 .
The plane referred to here means a plane extending in a direction substantially orthogonal to the same direction as the longitudinal direction of the main shaft portion 20 .

Further, the position of the projection 31 in the same direction as the longitudinal direction of the main shaft portion 20, specifically the position of the tip of the projection 31, is closer to the connection point 36 than the position of the protrusion 21 in the same direction as the longitudinal direction of the main shaft portion 20. near.

That is, the virtual plane on which the tip of the protrusion 31 is located and the virtual plane on which a part of the protrusion 21, that is, the portion of the protrusion 21 closer to the connection point 36 is located, are the same as the longitudinal direction of the main shaft portion 20. It means the position of the intersection with the imaginary straight line extending in the direction and passing through the connecting point 36 .

A first imaginary plane 31A on which the convex portion 31 is positioned and which extends in a direction substantially perpendicular to the longitudinal direction of the main shaft portion 20, and a first virtual plane 31A on which the protruding portion 21 of the main shaft portion 20 is positioned. The distance between the second virtual plane 22 that extends in the same direction as the direction in which the virtual plane 31A extends is a distance shorter than the thickness of the lid of the airtight container.

Here, the first virtual plane 31A is a virtual plane on which a part of the convex portion 31 that contacts the lid of the sealed container is positioned, and specifically, it is a virtual plane on which the tip of the convex portion 31 is positioned, for example.

A second virtual plane 22 is a virtual plane on which a portion of the protrusion 21 that contacts the lid of the sealed container is positioned. That is, since the protrusion 21 has a different portion in contact with the lid depending on whether the pressure regulating valve 10 of the present invention is in the closed state or the open state, the second virtual plane 22 is the second virtual upper plane 22A. , and a second imaginary lower plane 22B.

Therefore, in the present invention, "between the first virtual plane and the second virtual plane" means "between the first virtual plane and the second virtual upper plane". "Between the second virtual plane and the third virtual plane" means "between the second virtual lower plane and the third virtual plane".

In addition, a central recessed portion 35 is formed in a substantially central portion of the surface of the top surface portion 30 on the side opposite to the side on which the convex portion 31 is provided.
Here, the central recessed portion 35 is recessed toward the main shaft portion 20 at a portion of the top surface portion 30 corresponding to the connecting portion 36 with the main shaft portion 20 .

In addition, three concave portions 34 are formed on the side of the top surface portion 30 opposite to the main shaft portion 20 .
Here, each of the three recesses 34 extends so as to connect the central recessed portion 35 and the outer edge of the top surface portion 30 and is recessed in the same direction as the recessed direction of the central recessed portion 35 .

Also, the three recesses 34 are positioned at equal intervals in the circumferential direction around the central recessed portion 35 .
That is, in the pressure regulating valve 10 of the present invention shown in FIG. 1, the three recessed portions 34 are positioned at a central angle of 120 degrees with the central recessed portion 35 as the center.

In addition, the central recessed portion 35 is formed at a portion outside the top surface portion 30 corresponding to the connection portion 36 with the main shaft portion 20, so that it is separated from the position of the convex portion 31 by a predetermined distance.
That is, the convex portion 31 protrudes from a position separated by a predetermined distance in a direction substantially perpendicular to the longitudinal direction of the main shaft portion 20 from the connecting portion 36 with the main shaft portion 20 .

In addition, since the portion where the concave portion 34 and the central recessed portion 35 are formed has a smaller thickness than other portions of the top surface portion 30, it is easily deformed elastically.
Therefore, when the convex portion 31 is separated from the outer surface of the lid, the top surface portion other than the concave portion 34 and the central hollow portion 35 can be easily raised.

Moreover, the top surface part 30 has a grip part 33 made of silicone rubber.
Here, the grip portion 33 protrudes in the direction opposite to the projecting direction of the projection 31 from the side of the top surface portion 30 opposite to the side on which the projection 31 is provided.

The pressure regulating valve 10 of the present invention also includes three bottom portions 40 made of silicone rubber.
Here, the three bottom surface portions 40 are connected to the other end opposite to the longitudinal end of the main shaft portion 20 so as to form a one-to-one step with the projecting region 20A.

Also, the three bottom surface portions 40 extend in a direction substantially orthogonal to the longitudinal direction of the main shaft portion 20 .
In other words, the three bottom surface portions 40 are positioned at positions with a central angle of 120 degrees with respect to the longitudinal direction of the main shaft portion 20 .

In addition, the positions of the tips of the three bottom surface portions 40 extending in a direction substantially perpendicular to the longitudinal direction of the main shaft portion 20 correspond to the positions of the three protrusions in the direction substantially perpendicular to the longitudinal direction of the main shaft portion 20. It exists at a position farther from the main shaft portion 20 than each position of the portion 21 .

In addition, the tip of each of the three bottom surface portions 40 is positioned, and a virtual plane extending in the same direction as the second virtual plane 22, that is, the second virtual upper plane 22A and the second virtual lower plane 22B are expanded. , a third virtual plane 40A.
The distance between the second virtual lower plane 22B and the third virtual plane 40A is substantially the same as the distance between the first virtual plane 31A and the second virtual upper plane 22A.

Further, since the bottom portion 40 is made of silicone rubber, it can be elastically deformed.

Here, the pressure regulating valve of the present invention does not necessarily have a bottom portion.
However, if the pressure regulating valve of the present invention has a bottom portion, a state in which a part of the convex portion of the top surface portion is separated from the outer surface of the lid or a state in which the entire convex portion of the top surface portion is separated from the outer surface of the lid. can be stabilized.

Also, the number of bottom portions does not necessarily have to be three, and can be, for example, one to two, or four.

Further, in the pressure regulating valve of the present invention, the bottom surface portion does not necessarily have to be connected to the other end of the main shaft portion so as to form a step with the protrusion area having the protrusion as a part thereof.
However, if the bottom portion is connected to the other end of the main shaft portion in this way, the protrusion and the bottom portion are arranged in a straight line, and the protrusion and the bottom portion arranged in a straight line form a container. It is preferable because it is easy to hold the lid stably.

Further, in the pressure regulating valve of the present invention, the projections do not necessarily have to be annularly arranged, and the main shaft does not necessarily have three, that is, a plurality of projections positioned at equal intervals. good too.

However, if the projections are arranged in an annular shape and the main shaft has a plurality of such projections, the entire projection of the top surface can be separated from the outer surface of the lid of the container. can be stably maintained, and it is possible to more clearly indicate that the pressure regulating valve of the present invention does not block the through-hole, that is, is in an open state.
Further, when the pressure regulating valve of the present invention is in a state in which the through hole is blocked, that is, in a closed state, the stress of the convex portion is uniformly generated in the circumferential direction centered on the longitudinal direction of the main shaft portion, and the stress is uniformly generated in the circumferential direction. It is preferable because the sealing state can be strengthened immediately.

The mandrel can also have, for example, one protrusion, two protrusions, or four or more protrusions.

Moreover, in the pressure regulating valve of the present invention, the projection does not necessarily have to be elastically deformable, and the outer shape of the projection does not necessarily have to be curved.
However, with such a projection, when the top surface of the pressure regulating valve of the present invention in which the main shaft portion is inserted through the through hole of the lid of the container is pulled or pushed, Since the protruding part hits the edge of the through hole but can easily overcome the edge, the pressure regulating valve of the present invention can be manually switched between the open state and the closed state where the through hole is not blocked. It is preferable because it can be easily made to feel

Further, in the main shaft portion of the pressure regulating valve of the present invention, the three gap forming regions and the three protruding regions do not necessarily have to alternately exist. It is also possible to adopt a configuration in which they are connected in the circumferential direction.
However, if the gap forming regions and the protruding regions are alternately present, the gas inside the container can be evenly released to the outside of the container from the gap between the edge of the through hole and the gap forming regions. Also, the entire convex portion of the top surface can be separated from the outer surface of the lid of the container, and this state can be easily maintained stably, making it even clearer that the pressure regulating valve of the present invention is in the open state. It is preferable because it can be shown in

Further, in the pressure regulating valve of the present invention in which the protrusion is elastically deformable, the distance between the first imaginary plane and the second imaginary upper plane, that is, the second imaginary plane, is necessarily shorter than the thickness of the lid. It doesn't have to be.
However, if the distance between the first imaginary plane and the second imaginary plane is shorter than the thickness of the lid, the projecting portion can be brought into closer contact with the lid of the container than the configuration in which the projecting portion is not elastically deformed, and the sealed state is achieved. can be further strengthened, which is preferable.

Moreover, in the pressure regulating valve of the present invention, the top surface portion does not necessarily have a grip portion.
However, if the top surface has a grip, the user can grasp the grip to lift at least a portion of the top surface, thereby making it easier to separate at least a portion of the projections from the outer surface of the lid of the container. It is preferable because it can be done.

Further, in the pressure regulating valve of the present invention, the central depression and the recess may not necessarily be formed on the top surface.
However, if the top surface has a central depression and a recess, the top surface is likely to be elastically deformed, and at least a portion of the protrusions are easily separated from the outer surface of the lid of the container, which is preferable.

Also, the protrusion, main shaft, top surface, and bottom surface may not all be made of silicone rubber. may be composed of
However, if the projection, main shaft, top surface, and bottom surface are all made of silicone rubber, the pressure regulating valve of the present invention can be integrally molded from an elastically deformable material, which is preferable.
In addition, not only silicone rubber but also other materials can be integrally molded in the same manner as long as the projection, main shaft, top surface, and bottom surface are all made of the same elastically deformable material.

Next, pressure regulation using the pressure regulation valve of the present invention will be described with reference to the drawings.
FIG. 4 is a schematic cross-sectional view when the pressure regulating valve to which the present invention is applied attached to the lid of the sealed container is in the closed state.
FIG. 5 is a schematic cross-sectional view showing an example of how the closed pressure regulating valve according to the present invention lowers the internal pressure of the sealed container.
Further, FIG. 6 is a schematic cross-sectional view when the pressure regulating valve to which the present invention is applied attached to the lid of the sealed container is in an open state.

As shown in FIG. 4, the pressure regulating valve 10 of the present invention is detachably attached to a lid 51 of a sealed container 50 in which roasted coffee beans 53 are stored.
That is, the pressure regulating valve 10 of the present invention is detachably attached to the lid 51 by inserting the main shaft portion 20 of the pressure regulating valve 10 of the present invention into a through hole 51A formed substantially in the central portion of the lid 51. there is

At this time, the bottom surface portion 40 is located in the internal space of the container body 52 of the sealed container 50, and the top surface portion 30 is located on the opposite side of the outer surface of the lid 51, that is, the inner surface of the container body 52 facing the internal space. in contact with the face.
That is, the tip of the convex portion 31 of the top surface portion 30 is in contact with the outer surface of the lid 51 .

A first imaginary plane 31A on which the tip of the protrusion 31 is located and a second imaginary plane on which a portion of the protrusion 21 that contacts the lid 51 is located when the pressure regulating valve 10 of the present invention is in the closed state. The distance from the flat surface 22A is shorter than the thickness of the lid 51 .

Therefore, the lid 51 is sandwiched between the convex portion 31 of the top surface portion 30 and the projection portion 21 of the main shaft portion 20, and the convex portion 31 and the projection portion 21 are pressed by the lid 51, and the elastic deformation of the top surface portion 30 causes the convex portion 31 to move. A force to return to the original position, ie stress, and a force to return the projection 21 to its original position due to elastic deformation of the projection 21 are generated.
Both the stress of the projection 31 and the stress of the projection 21 are forces that push the lid 51 and push the lid 51 from the opposite sides, so that the projection 31 can be brought into close contact with the lid 51, and the sealing state can be strengthened. can.

In addition, since the protrusion 31 protrudes from the same plane as the pressure receiving area 32 , when the tip of the protrusion 31 contacts the outer surface of the lid 51 , the pressure receiving area 32 contacts the outer surface of the lid 51 . A pressure receiving space 55 is formed between the pressure receiving area 32 and the outer surface of the lid 51 .

A gap is formed between the gap forming region 20B of the main shaft portion 20 and the edge of the through hole 51A of the lid 51, and the gap and the pressure receiving space 55 communicate with each other.

Carbon dioxide gas 54 is released from the roasted coffee beans 53 .
The carbon dioxide gas 54 released from the coffee beans 53 increases the air pressure inside the sealed container 50 , that is, in the space surrounded by the lid 51 and the container body 52 .
This is because the convex portion 31 of the top surface portion 30 of the pressure regulating valve 10 of the present invention is in close contact with the lid 51 of the sealed container 50 to strengthen the sealed state.

The carbon dioxide gas 54 released from the coffee beans 53 passes through the gap between the gap forming region 20B of the main shaft portion 20 and the edge of the through hole 51A of the lid 51, and further flows into the pressure receiving space 55.
The carbon dioxide gas 54 that has flowed into the pressure receiving space 55 applies pressure to the pressure receiving area 32 of the top surface portion 30. When the pressure received by the pressure receiving area 32 exceeds the stress of the convex portion 31, the top surface portion 30 is elastically deformed to form the convex portion. The tip of the projection 31 is separated from the outer surface of the lid 51 as shown in FIG.

As a result, the carbon dioxide gas 54 flows out of the sealed container 50 through the gap between the tip of the protrusion 31 and the outer surface of the lid 51 .
A state in which a gap is formed between the tip of the projection 31 and the outer surface of the lid 51 is a state in which the outside of the sealed container 50 and the inside of the sealed container 50 are in communication.

Therefore, the inside of the sealed container 50, that is, the carbon dioxide gas 54 in the space surrounded by the lid 51 and the container main body 52 is trapped in the gap between the clearance forming region 20B of the main shaft portion 20 and the edge of the through hole 51A of the lid 51. , and flows out of the sealed container 50 through the gap between the tip of the projection 31 and the outer surface of the lid 51 .

Next, since the carbon dioxide gas 54 flows out of the sealed container 50, the air pressure in the space surrounded by the lid 51 and the container body 52 is reduced.
When the air pressure in the space surrounded by the lid 51 and the container body 52 decreases, the pressure received by the pressure-receiving area 32 of the top panel 30 also decreases. The tip of 31 contacts the outer surface of lid 51 .

When the air pressure in the space surrounded by the lid 51 and the container body 52 rises again due to the carbon dioxide gas 54, the top plate 30 is elastically deformed again, and the tip of the projection 31 and the outer surface of the lid 51 are separated from each other. A gap is generated in the closed container 50, the carbon dioxide gas 54 flows out of the sealed container 50, and the air pressure in the space surrounded by the lid 51 and the container main body 52 decreases.
Thus, the pressure regulating valve 10 of the present invention can regulate the pressure inside the sealed container 50 .

In addition, the main shaft portion 20 of the pressure regulating valve 10 of the present invention has three projections 21, and the positions of the three projections 21 in the longitudinal direction of the main shaft portion 20 are substantially the same. The two protruding portions 21 are positioned at equal intervals in the circumferential direction centering on the longitudinal direction of the main shaft portion 20 .

Therefore, for example, the top surface portion 30 of the pressure regulating valve 10 of the present invention shown in FIG. When the state of contact with the side surface, that is, the state shown in FIG. 6, the entire convex portion 31 of the top surface portion 30 can be separated from the lid 51 of the sealed container 50, and this state can be stably maintained. .
As a result, it can be clearly shown that the pressure regulating valve 10 of the present invention is in the open state.
That is, the pressure regulating valve 10 of the present invention can easily recognize whether or not the through hole 51A formed in the lid 51 of the sealed container 50 is blocked.

Also, although not shown, for example, only one protrusion 21 out of the three protrusions 21 may cross over the edge of the through hole 51A of the lid 51 and contact the outer surface of the lid 51. The convex portion 31 is partially separated from the lid 51, and the pressure regulating valve 10 of the present invention does not block the through hole 51A, so the state is in the open state.
In the pressure regulating valve 10 of the present invention, even when only one protrusion 21 is in contact with the outer surface of the lid 51 over the edge of the through hole 51A of the lid 51, it is easy to stably maintain the state.
As a result, the pressure regulating valve 10 of the present invention can clearly indicate such an open state as well.

As described above, the pressure regulating valve of the present invention includes the main shaft portion capable of forming a gap with the edge of the through hole and the top surface portion having the convex portion and being elastically deformable. is inserted into the through-hole of the lid of the container, the projection abuts against the outer surface of the lid so that the pressure regulating valve of the present invention can seal the container, and the main shaft portion Since a gap can be formed between and, at least a part of the convex portion is elastically deformed away from the lid to allow communication between the outside of the container and the inside of the container, thereby reducing the pressure inside the container.

Further, in the pressure regulating valve of the present invention, the main shaft portion having the projection portion and the position of the projection portion in the same direction as the longitudinal direction of the main shaft portion is closer to the connecting portion than the position of the projection portion in the same direction as the longitudinal direction of the main shaft portion. At least a part of the convex portion of the top surface should be kept away from the outer surface of the lid when the protrusion is brought into contact with the outer surface of the lid of the container. can be done.

Furthermore, since the pressure regulating valve of the present invention includes such a main shaft portion and top surface portion, when the pressure regulating valve of the present invention is attached to the lid of the container, the convex portion is positioned and extends in the longitudinal direction. The lid of the container is positioned between a virtual plane extending in a direction substantially perpendicular to the projection and a virtual plane extending in a direction substantially perpendicular to the longitudinal direction along with the projection.
Then, when both the protrusion and the protrusion are pressed against the lid, elastic deformation of the top surface causes the protrusion to return to its original position, that is, stress is generated. Become. As a result, it is easier to bring the protrusions into close contact with the lid of the container than in the configuration without the protrusions, so that the sealed state can be strengthened.

Therefore, the pressure regulating valve of the present invention can regulate the pressure inside the container, and it is easy to recognize whether or not the through hole formed in the lid of the container is closed.
Moreover, the pressure regulating valve of the present invention can of course be used not only for coffee beans, but also for containers for storing foods that ferment to generate gas, for example.

REFERENCE SIGNS LIST 10 Pressure regulating valve 20 Main shaft 20A Projection region 20B Gap formation region 21 Projection 22 Second virtual plane 22A Second virtual upper plane 22B Second virtual lower plane 30 Top surface 31 Projection 31A First virtual plane 32 Pressure receiving area 33 Grip portion 34 Recess 35 Central depression 36 Connection point 40 Bottom portion 40A Third imaginary plane 50 Sealed container 51 Lid 51A Through hole 52 Container main body 53 Coffee beans 54 Carbon dioxide gas 55 Pressure receiving space

Claims (7)

extending in the longitudinal direction, capable of being inserted into a through-hole formed in the lid of the container, capable of forming a gap with the edge of the through-hole, and having a projection, the projection being a main shaft projecting in a direction substantially perpendicular to the same longitudinal direction;
It is connected to one end of the longitudinal direction of the main shaft portion and extends in a direction substantially perpendicular to the longitudinal direction, and has a convex portion, the convex portion extending in the same longitudinal direction from the connection point with the main shaft portion. It protrudes in the same direction as the longitudinal direction from a position separated by a predetermined distance in a direction substantially orthogonal to the same direction as the direction, and the position of the same convex portion in the same direction as the same longitudinal direction is the same as the same longitudinal direction. and an elastically deformable top surface that is closer to the connecting point than the position of the protrusion in the direction. The protrusions are arranged in an annular shape centering on the connection point between the main shaft portion and the top surface portion,
The main shaft portion has a plurality of projections, and the plurality of projections are substantially the same in position in the longitudinal direction of the main shaft and are the same in the circumferential direction centered on the longitudinal direction. 2. The pressure regulating valve of claim 1, wherein the portions are equally spaced from each other. 3. The pressure regulating valve according to claim 1, wherein the protrusion of the main shaft is elastically deformable and has a curved outer shape. A first imaginary plane on which the convex portion of the top surface portion is positioned and which extends in a direction substantially orthogonal to the same direction as the longitudinal direction of the main shaft portion; The pressure regulating valve according to claim 3, wherein the distance between the direction in which the first imaginary plane spreads and the second imaginary plane extending in the same direction is a distance shorter than the thickness of the lid. The top surface portion has a grip portion projecting in a direction opposite to the projecting direction of the projection from a side of the top surface portion opposite to the side on which the projection is provided,
A central recessed portion recessed toward the main shaft portion is formed on the side of the top surface portion opposite to the side on which the convex portion is provided and at a location corresponding to a connection location with the main shaft portion,
On the side of the top surface portion opposite to the side on which the convex portion is provided, there is formed a recessed portion that extends so as to connect the central recessed portion and the edge of the top surface portion and that is recessed in the same direction as the central recessed portion. The pressure regulating valve according to claim 1, claim 2, claim 3 or claim 4. It is connected to the other end opposite to the one end in the longitudinal direction of the main shaft portion and extends in a direction substantially perpendicular to the same direction as the longitudinal direction of the main shaft portion. The position of the tip extending in the direction substantially orthogonal to the same longitudinal direction is further away from the main shaft portion than the position of the protrusion in the direction substantially orthogonal to the same longitudinal direction of the main shaft portion. The distance between the second virtual plane and a third virtual plane on which the tip is positioned and which extends in the same direction as the direction in which the second virtual plane extends 5. The pressure regulating valve according to claim 4, further comprising an elastically deformable bottom portion having substantially the same distance between the first virtual plane and the second virtual plane. It extends in the longitudinal direction, can be inserted into a through hole formed in the lid of the container, and has a plurality of projections, the plurality of projections projecting in a direction substantially orthogonal to the longitudinal direction. The positions of the plurality of protrusions in the same longitudinal direction are substantially the same, the protrusions are positioned at equal intervals in the circumferential direction around the longitudinal direction, and the protrusions are elastically deformable. In addition, the outer shape of the protrusion is curved, and in the circumferential direction centered on the longitudinal direction, the gap forming region and the protrusion, which are regions where a gap can be formed between the edge of the through hole and the A projecting region, which is a region partially having
It is connected to one end of the main shaft in the longitudinal direction and extends in a direction substantially perpendicular to the same direction as the longitudinal direction. protruding in the same direction as the longitudinal direction from a position separated by a predetermined distance in a direction substantially orthogonal to the same direction as the longitudinal direction from the The position of the projection in the same direction as the longitudinal direction is closer to the connecting point than the position of the projection in the same direction as the longitudinal direction, and the projection is located in the same direction as the longitudinal direction of the main shaft portion and a second virtual plane on which the protrusion of the main shaft portion is located and which extends in the same direction as the direction in which the first virtual plane extends. The distance between is a distance shorter than the thickness of the lid and is elastically deformable, and
It is connected to the other end of the main shaft portion opposite to the one end in the longitudinal direction so as to form a step with the protruding region, and is arranged in the same direction as the longitudinal direction of the main shaft portion. and the tip extending in the direction substantially perpendicular to the same longitudinal direction of the main shaft portion is located in the direction substantially perpendicular to the longitudinal direction of the main shaft portion. A third imaginary plane located at a position further from the main shaft portion than the position of the protrusion, having the tip thereof positioned, and extending in the same direction as the direction in which the second imaginary plane extends. a distance between two virtual planes is substantially the same as a distance between the first virtual plane and the second virtual plane, and an elastically deformable bottom portion.

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