JPH0579457A - Pressure reducing vessel - Google Patents

Abstract

PURPOSE:To provide a pressure reducing vessel which is provided with the function of a hand type vacuum pump heretofore being a separate accessory, facilitates pressure reduction operation through elimination of a different hand type vacuum pump, increases a commercial value through reduction of the number of parts, and sharply reduces a cost by simple design structure. CONSTITUTION:In a pressure reducing vessel, a recessed part 3 for a cylinder is formed in the cover body 2 of a container body 1 and a valve mechanism 5 is arranged on the bottom part of the recessed part 3 for a cylinder. A cover disc 6 is installed in the recessed part 3 for a cylinder and a piston rod body 7 to effect air ventilation is slidably arranged on the cover disc 6. A regulating groove mechanism 16 is mounted on the piston rod body 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum container.

[0002]

2. Description of the Related Art Generally, a depressurized container is used for long-term storage of food or for accelerating overnight pickles, and recently, a container disclosed in JP-A-3-199681 is known.

Generally, a decompression container is provided with a valve mechanism in the container,
A separate hand-operated vacuum pump is applied to this valve mechanism, the piston of the pump is reciprocated, and the air in the container is evacuated through the valve mechanism. , And a hand-operated vacuum pump.

[0004]

SUMMARY OF THE INVENTION In the present invention, the function of a hand-operated vacuum pump, which has heretofore been a separate accessory, is provided in the decompression container, and a separate hand-operated vacuum pump is unnecessary.
It is a technical subject to provide a decompression container which is easy to depressurize, reduces the number of parts to enhance the commercial value, and has a simple structure to provide an extremely low-cost container.

[0005]

The gist of the present invention will be described with reference to the accompanying drawings.

A cylinder recess 3 is formed in the container body 1 or a lid 2 which is hermetically fitted in the container body 1, and a ventilation hole 4 communicating with the inside of the container body 1 is provided at the bottom of the cylinder recess 3 and this passage is provided. The valve mechanism 5 is provided in the pores 4, and the cylinder recess 3 is provided.
A piston rod 7 is slidably provided in a cover plate 6 that closes the piston rod 7, a knob body 8 is provided at an outer proximal end portion of the piston rod body 7, and a cylinder is provided at an inner distal end portion of the piston rod body 7. A valve seat 9 having a diameter larger than that of the piston rod 7 that slides along the inner surface of the recess 3 for use is provided, and this valve seat 9 has an O-ring type ring valve.
A ring groove 11 for fitting the ring groove 10 is provided, and when the ring valve 10 is fitted in the ring groove 11 so that the ring valve 10 projects slightly from the peripheral surface of the valve seat 9, the cylinder recess 3 The inside is airtightly divided so that it slides, and the width of the ring groove 11 is made slightly wider than the width of the ring valve 10.
Is provided so as to form a gap 12 between the inner surface of the tip wall portion 19 of the valve seat 9 and the ring valve 10 when the piston rod body 7 pushed toward the base end side of the ring valve 10 is communicated with the inside of the ring valve 10. An air vent passage 13 for venting air through the valve seat 9 is provided in the base end wall portion 20 of the valve seat 9, and a sliding gap 14 is formed in the sliding portion 15 of the piston rod body 7 and the lid plate 6 to allow air venting. The present invention relates to a vacuum container.

Further, the sliding portion 15 between the piston rod 7 and the lid 6
The decompression container according to claim 1, further comprising a restriction groove mechanism 16 for restricting a sliding direction and a sliding range of the piston rod body 7.

Further, the restriction groove 17 of the restriction groove mechanism 16 is formed on the peripheral surface of the piston rod body 7, and the restriction groove 17 is formed as a groove portion for reducing pressure sliding.
A rotation groove 17b perpendicular to the groove 17b is connected to the groove 17a, and an overslide groove 17c parallel to the pressure-reducing slide groove 17a is connected to the groove 17b. The length is formed so that the tip of the piston rod 7 can press the valve mechanism 5 at the bottom of the cylinder recess 3 when the piston rod 7 is slid toward the tip side along the excessive sliding groove portion 17c. Then
The pressure reducing container according to claim 2, wherein the valve mechanism 5 is constituted by a flexible valve disc 18 in which the vent hole 4 is opened by pressing.

[0009]

The gripping body 8 at the outer proximal end portion of the piston rod body 7 is held, and the piston rod body 7 is reciprocally slid so that the tip end portion of the piston rod body 7 is reciprocally slid in the cylinder recess 3.

When the piston rod 7 is pushed toward the tip side, the ring valve 10 fitted in the ring groove 11 of the valve seat 9 is moved toward the base end side of the valve seat 9 in the ring groove 11 and the valve seat 9 A gap 12 is formed between the tip wall portion 19 and the ring valve 10.

On the other hand, when the piston rod 7 is pushed, as shown in FIG. 1, the valve mechanism 6 holds the vent hole 4 in a closed state by the pushing pressure, so that the valve in the cylinder recess 3 is closed. The air on the tip side of the seat 9 is pushed out from the gap 12 to the base end side of the valve seat 9 of the cylinder recess 3 through the air vent passage 13 communicating with the gap 12 and is discharged to the outside via the sliding gap 14. ..

On the contrary, when the piston rod 7 is pulled toward the base end side, as shown in FIG. 2, the ring valve 10 is moved toward the tip end side of the valve seat 9 in the ring groove 11 and the air vent passage 13 is moved. The air is blocked between the tip side and the base side of the valve seat 9 of the cylinder recess 3.

On the other hand, when the piston rod 7 is moved,
Since the valve mechanism 5 holds the vent hole 4 in the open state by the traction suction pressure, the air in the container body 1 is pulled up through the vent hole 4 and the inside of the container body 1 is depressurized.

When the restriction groove mechanism 16 is provided, the piston rod body 7
The sliding direction and the sliding reciprocating range of are regulated.

This restriction groove 17 is connected to a pressure-reducing sliding groove portion 17a and a rotation groove portion 17b which is orthogonal thereto.
Further, groove 17c for excessive sliding parallel to groove 17a for reduced pressure sliding is provided on b.
In the case where the piston rods 7 are arranged in series, the piston rod 7 is slid back and forth along the pressure-reducing sliding groove 17a as described above.

That is, the pressure-reducing sliding groove 17a functions as a guide groove for reciprocating sliding, and the length of the pressure-reducing sliding groove 17a regulates the range of reciprocal sliding.

The reciprocating sliding of the piston rod 7 reduces the pressure in the container body 1. However, in order to return the reduced pressure to the normal pressure, the flexible valve disc 18 of the valve mechanism 5 is pressed. When the vent hole 4 is opened by rotating the piston rod body 7 along the rotating groove portion 17b, the piston rod body 7 is further rotated along the excessive sliding groove portion 17c as shown in FIG. Is pushed toward the tip side, and the valve mechanism 5 is pushed by the tip portion of the piston rod body 7.

[0018]

EXAMPLE In this example, a cylinder recess 3 is formed in the center of a lid 2 that is fitted on a container body 1, and a piston rod 7 that reciprocates vertically is disposed in the cylinder recess 3. It was done.

When the depth of the cylinder recess 3 cannot be designed deep, it is desirable to design the bottom area to be large in order to increase the volume of the recess.

Depending on the setting position of the cylinder recess 3 and the mounting position of the piston rod 7, the reciprocating direction and the like can be appropriately designed.

In this embodiment, the lid plate 6 is crimped and fixed to the cylinder recess 3 so as to be detachable. The knob body 8 of the piston rod body 7 is a carrying knob of the present invention and a piston. It also serves as a knob for sliding operation of the rod body 7. In this embodiment, it is formed into an annular knob shape, but it may be designed into a handle shape.

In the restriction groove mechanism 16, a restriction groove 17 is formed on the peripheral surface of the piston rod body 7, and an engaging guide convex portion 21 that engages with the restriction groove 17 is formed in the piston rod body 7 insertion opening of the cover 6. 22 It projects on the edge.

The restriction groove 17 is designed in consideration of the length of the cylinder concave portion 3 and the like. Since the restriction groove 17 is slid up and down by a predetermined range above the valve mechanism 5, it is suitable for decompression sliding. A groove 17a is formed in the vertical direction, and a rotating groove portion 17b for switching and rotating the piston rod 7 is horizontally connected to the upper end of the pressure reducing sliding groove 17a.

Further, an over-sliding groove portion 17c is continuously provided above the pressure-reducing sliding groove 17a in parallel with the pressure-reducing sliding groove 17a.

Therefore, vertical sliding of the piston rod 7 for depressurizing the inside of the container body 1 is regulated by the length from one end to the other end of the depressurizing sliding groove 17a, and the normal pressure is applied. When returning, the piston rod 7 is once horizontally rotated along the rotation groove portion 17b to switch the engagement guide convex portion 21 to the state in which the engagement guide projection portion 21 is engaged with the oversliding groove portion 17c. By moving the piston rod 7 downwardly to press the bottom face of the piston rod 7 against the valve mechanism 5 to push the flexible valve disc 18 of the valve mechanism 5 to flip up the peripheral edge of the flexible valve disc 18 to open the vent hole 4. It is an open state.

[0026]

Since the present invention is configured as described above, a separate manual pressure pump, which has been a necessary item for a decompression container in the past, is no longer required, and one pump is applied to the decompression container while supporting this state. Since there is no need for sliding operation, the operation is extremely easy, and the pump is easy to pack without forgetting to leave the pump, and the decompression container has extremely high commercial value and is highly practical.

Moreover, since the structure can be designed to have a simple structure, it is possible to provide a low-pressure decompression container.

Further, when the regulating groove mechanism is provided, the sliding direction and the sliding range are regulated, so that the sliding operation becomes very smooth and the decompression container further improves the operability.

Further, the restriction groove is formed by connecting a rotation groove section which is orthogonal to the restriction groove section to the decompression sliding groove section, and is further formed with an oversliding groove section which is parallel to the decompression sliding groove section. The length of this oversliding groove is such that the tip of the piston rod can press the valve mechanism at the bottom of the cylinder recess when the piston rod is slid toward the tip along the groove for oversliding. If the valve mechanism is made of a flexible valve disc that has a vent hole that is opened by pressing, the operability is improved and
The depressurization container is extremely highly practical in that the pressing operation of the valve mechanism, which has been conventionally pushed by hand, can be continuously performed by the piston rod.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a main part during a downward pressing sliding operation.

FIG. 2 is a cross-sectional view of a main part during an upward pulling operation.

FIG. 3 is a cross-sectional view of a main part when a valve mechanism pressing operation is performed.

FIG. 4 is a plan sectional view of a sliding portion between a piston rod and a lid.

FIG. 5 is a plan sectional view of a valve seat portion showing an air vent passage.

FIG. 6 is an external view of the product of the present invention.

[Explanation of symbols]

 1 Container Main Body 2 Lid Body 3 Cylinder Recess 4 Vent Hole 5 Valve Mechanism 6 Lid Plate 7 Piston Rod 8 Knife Body 9 Valve Seat 10 Ring Valve 11 Ring Groove 12 Gap 13 Air Venting Path 14 Sliding Gap 15 Sliding Part 16 Regulating groove mechanism 17 Regulating groove 17a Depressurizing sliding groove 17b Rotating groove 17c Over sliding groove 18 Flexible valve board 19 Tip wall 20 Base wall

Claims (3)

[Claims] 1. A container main body or a lid body hermetically fitted to the container main body is formed with a cylinder recess, and a vent hole communicating with the inside of the container main body is provided at the bottom of the cylinder recess, and a valve mechanism is provided in this vent hole. The piston rod body is slidably provided in the lid that closes the cylinder recess, the knob body is provided at the outer proximal end of the piston rod body, and the cylinder is provided at the inner tip of the piston rod body. A valve seat, which is larger than the piston rod that slides along the inner surface of the recess for use, is provided, and a ring groove for fitting an O-ring type ring valve is provided in this valve seat. When the ring valve is fitted to the ring valve, the ring valve protrudes slightly from the peripheral surface of the valve seat and divides the cylinder recess in an airtight manner so that the ring groove slides slightly wider than the ring valve width. And the ring valve is pushed toward the base end of the valve seat An air vent passage is provided so as to form a gap between the inner surface of the tip end wall of the valve seat and the ring valve when the rod is pressed, and an air vent passage that communicates with this gap and vents air through the inside of the ring valve is provided at the base end wall of the valve seat. A decompression container characterized in that a sliding gap is formed in the sliding portion between the piston rod and the lid so that air can be vented. 2. The depressurized container according to claim 1, wherein a regulating groove mechanism for regulating the sliding direction and the sliding range of the piston rod is provided in the sliding portion between the piston rod and the cover. 3. A restricting groove of a restricting groove mechanism is formed on a peripheral surface of a piston rod body, and this restricting groove is connected with a rotating groove portion of the depressurizing sliding groove portion which is orthogonal to the groove, and the depressurizing groove portion is further depressurized. It is constructed by connecting a series of oversliding grooves that are parallel to the sliding groove, and the length of this oversliding groove is adjusted so that when the piston rod is slid toward the tip side along the oversliding groove. The valve mechanism is constituted by a flexible valve disc having a tip portion formed to have a length capable of pressing the valve mechanism at the bottom of the recess for cylinder, and the vent hole is opened by pressing the valve mechanism. Decompression container.