JP3030712U - Decompression container - Google Patents

Abstract

In a decompression container of a manual pump type, the structure is simple, the stroke of the piston is large, the thickness of the lid is small, and the normal pressure return operation is also easy. SOLUTION: A horizontal cylinder 30 is integrally provided on the upper surface of a lid body 20, and a vent hole 60 for returning to normal pressure is provided in the lid body 20 on the side of the cylinder 30.
Return to normal pressure with 0 operation.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a vacuum container used for long-term storage of food.

[0002]

[Prior art]

 As a conventional decompression container of this type, a container in which a separate manual pump is attached / detached to / from the lid of the container is proposed by Kaikai 4-124957. Further, Japanese Patent Application Laid-Open No. 5-79457 proposes a decompression container in which a manual pump is integrally incorporated in the lid of the container.

[0003]

[Problems to be solved by the device]

 However, in the depressurized container of the above-mentioned Kaikaihei 4-124957, the container and the manual pump are separate bodies, so the cost is high, and the manual pump has to be attached to and detached from the lid, which is troublesome. The horizontal pump operation may damage the attachment / detachment part for long-term use, and in order to release the reduced pressure, the manual pump had to be removed from the lid and the sealing plug was pressed, which was troublesome.

Further, in the decompression container of JP-A-5-79457, the thickness of the lid is remarkably increased due to the structure in which the manual pump that operates in the vertical direction is integrally incorporated in the lid, and as a result, the volume of the container body is increased. There is the inconvenience that a large amount of food etc. cannot be stored in the container body because it is not large, and because the cylinder of the manual pump moves up and down inside the lid, the stroke of this up and down movement cannot be increased so much. Therefore, many manual pumps had to be moved up and down in a short stroke to reduce the pressure, which was troublesome. The present invention aims to provide a decompression container that solves these problems.

[0005]

[Means for Solving the Problems]

 To achieve the above object, in the present invention, a container main body, a lid that is hermetically fitted to the container main body, and a protrusion integrally provided on an upper surface of the lid, and one end side in a horizontal direction is decompressed. A horizontal cylinder that communicates with the inside of the lid through a ventilation hole and has a piston inlet / outlet at the other end in the horizontal direction, and a horizontal cylinder that is slidably accommodated in the cylinder from the piston inlet / outlet. And a piston for dynamically depressurizing air from the depressurizing vent hole to the outside to depressurize a closed space formed by the container body and the lid, and for restoring normal pressure provided on the side of the cylinder in the lid. A vent hole; and a normal pressure return operating member made of an elastic material that closes the normal pressure return vent hole from the upper surface of the lid in a depressurized state and communicates the normal pressure return vent hole to the outside by an operation. There is.

Therefore, the container is decompressed by sliding the piston horizontally in the horizontal cylinder integrated with the lid. To return to normal pressure, pinch the normal pressure return member at a location different from the cylinder of the lid with your finger to make the normal pressure return vent communicate with the outside.

[0007]

[Embodiment of device]

 An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the decompression container 1 of the present invention includes a container body 10 having an opening 11 on an upper surface thereof, and a lid body 20 which is fitted into the container body 10 in a sealed manner. The lid 20 has an inner edge 21 in the up-down direction that fits the inner peripheral surface of the upper end of the opening 11 of the container body 10. A strip-shaped elastic packing 23 is sandwiched between the inner edge 21 and the outer edge 22, and when the lid 20 is fitted into the opening 11 of the container body 10, the elastic packing 23 seals the opening 11 airtightly. It is sealed in a shape.

On a central upper surface of the lid body 20, a horizontal cylindrical cylinder 30 constituting a manual pump is provided so as to integrally project with the lid body 20. A piston inlet / outlet 31 is provided at one end of the cylinder 30 in the horizontal direction, and a piston 40 is accommodated in the cylinder 30 slidably in the horizontal direction. A partition wall 32 is provided at the other end of the cylinder 30 in the horizontal direction, and the inside of the cylinder 30 and the inside of the lid body 20 are communicated with each other by vent holes 33 and 34 for decompression.

An attachment protrusion 50 a of an airtight plug 50 made of an elastic body is fitted into the attachment hole 35 at the center of the partition wall 32 in an airtight manner. As shown in FIG. 2, the airtight stopper 50 has a dish shape inside the container body 10 at normal pressure, and when the inside of the container body 10 becomes a negative pressure than the inside of the cylinder 30, elastically deforms as shown in FIG. To close the ventilation hole 34 in an airtight manner.

A disc 51 is provided on an inner annular step 36 in the cylinder 30, and the peripheral edge of the dish-shaped airtight plug 50 is in contact with the disc 51 when the pressure inside the container body 10 is normal pressure. . A vent hole 52 is provided in the disc 51.

An annular groove 41 is provided on the outer periphery of the tip of the piston 40, and an annular O-ring 42 is provided in the annular groove 41 in a state of being airtightly pressed against the inner peripheral wall of the cylinder 30 and the bottom surface of the annular groove 41. Therefore, when the piston 40 is moved to the left as shown in FIG. 2, the inside of the annular groove 41 is moved to the right, and when it is moved to the right as shown in FIG. 3, the inside of the annular groove 41 is moved to the left. Move to.

The piston 40 has a hollow portion 45, has a vent hole 43 in the center of the annular groove 41 at the right end in the left-right direction, and has a vent hole 44 at the left end side. The lid 20 is provided with a recess 24 so as not to prevent the movement of the operation portion 46 having a large diameter at the left end of the piston 40.

As shown in FIGS. 4 and 5, the cover 20 is provided with vent holes 60, 60 for returning to normal pressure, which communicate with the inside of the cover 20 on the side of the cylinder 30. A mounting hole 61 is provided between the ventilation holes 60, 60.

An attachment protrusion 70 a of the normal pressure restoring operation member 70 made of an elastic body is fitted into the attachment hole 61 in an airtight manner. The normal pressure return operating member 70 has a disk-shaped operation protrusion 70b having a ring shape on the upper surface, and the normal pressure return operating member 70 has a vent hole 60 when the inside of the container body 10 is under negative pressure, as shown in FIG. , 60 are airtightly closed, and when the normal pressure restoring operation member 70 is deformed by applying a force to flip the normal pressure restoring operation member 70 with a finger or the like, the outside of the lid 20 and the vent hole 60 communicate with each other. Then it returns to normal pressure.

Next, the operation of the decompression container 1 of the present invention will be described. The lid 20 is fitted to the container body 10, and then the piston 40 is moved to the left as shown in FIG. Then, the O-ring 42 moves in the annular groove 41 to the right side of the ventilation hole 43 on the tip end side of the piston 40, so that the internal space A of the cylinder 30 and the ventilation hole 43 are disconnected from each other. Therefore, the air in the container body 10 is sucked into the internal space A through the ventilation holes 33, 34, 52.

Next, when the piston 40 is pushed rightward as shown in FIG. 3, the O-ring 42 moves in the annular groove 41 to the left of the O-ring 42, and the internal space A shown in FIG. The vent hole 43 of the piston 40 communicates with the hollow portion 45 of the piston 40, and the hollow portion 45 communicates with the outside through the vent hole 44 on the left side. Therefore, as shown in FIG. 3, when the piston 40 is pushed rightward, the airtight plug 50 is pressed and elastically deformed to close the ventilation holes 34, 34 of the partition wall 32, and the air in the internal space A is removed by the piston 40. The air is discharged to the outside through the ventilation holes 44. When the left and right reciprocating motions of the piston are repeated, the air in the container body 10 is sequentially discharged to the outside and becomes a negative pressure. As a result, as shown in FIG. 3, the airtight plug 50 is maintained in a state in which the pressure reducing vent holes 34 of the partition wall 32 are sealed. In this negative pressure state, the elastic packing 23 of the lid 20 is strongly adsorbed to the upper edge of the opening 11 of the container body 10.

Next, in order to return the inside of the container body 10 to the normal pressure, the normal pressure return operating member 70 may be deformed with a finger or the like to connect the vent holes 60, as shown in FIG.

[0018]

[Effect of device]

 As described above, in the decompression container of the present invention, the manual pump is not a separate body, but the cylinder 30 is integrally formed on the upper surface of the lid body 20 in a horizontal direction. It is possible to eliminate the complexity of attaching and detaching the cylinder, and since the cylinder 30 is provided so as to project in the horizontal direction along the plane of the lid body 20, the operation stroke of the piston can be increased, which facilitates the depressurization operation. Further, the vertical thickness of the lid 20 does not have to be so large, the storage volume of the container can be increased, and the normal pressure restoring member located in a place different from the cylinder 30 of the lid 20 is operated. Since the normal pressure can be restored, the normal pressure restoration operation becomes extremely simple.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is an operation explanatory diagram of the manual pump of FIG.

FIG. 3 is an operation explanatory diagram of the manual pump of FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

5 is an operation explanatory view of the normal pressure return operating member 70 shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Decompression container 10 Container body 20 Lid body 30 Cylinder 32 Partition wall 34 Vent hole 40 Piston 42 O-ring 43 Vent hole 44 Vent hole 50 Airtight plug 60 Vent hole for normal pressure recovery 70 Normal pressure return operation member

Claims (1)

[Scope of utility model registration request] 1. A container body, a lid body fitted into the container body in a hermetically sealed manner, integrally projectingly provided on an upper surface of the lid body, and one end side in a horizontal direction is provided with a depressurizing vent hole inside the lid body. A horizontal cylinder that communicates with the horizontal cylinder and has a piston inlet / outlet on the other side in the horizontal direction, and is slidably accommodated in the cylinder from the piston inlet / outlet. A piston that discharges to the outside to depressurize a closed space formed by the container body and the lid, a vent for returning normal pressure provided in the lid at a side of the cylinder, and a normal pressure in a depressurized state. A decompression container comprising: a normal pressure return operating member made of an elastic material that closes the return vent hole from the upper surface of the lid and communicates the normal pressure return vent with the outside by an operation.