JPH04189752A - Opening and closing device for bag evacuation opening - Google Patents

Abstract

PURPOSE:To reduce the number of parts and permit evacuating operation to be performed rapidly by forming the structure to press a valve body without using any spring. CONSTITUTION:After bedquilt or other contents are received in a bag 17, a closing lid 5 is disengaged from the bag, a suction opening 19 of a vacuum cleaner is connected with a holding part 3 and the vacuum cleaner is operated for the bag evacuation. A valve body 2 is then raised to define an air space between itself and a seating part 1 and air in the bag 17 is sucked out by the vacuum cleaner. At the time of suction, since the air in the bag 17 reaches a ventilation hole 7 through a ventilation window 13 of an underlying cap 4, a smooth air suction can be effected, without the bedquilt or the like received in the bag 17 blocking the ventilation hole 7. Upon disconnection of the suction opening 19 at the end of evacuation, since the inner pressure of the bag 17 is low, the air space produced between the valve body 2 and the seating part 1 placed automatically in contact with each other is closed. When the closing lid 5 is put back in place, the valve body 2 is pressed by the closing lid 5 in the closing direction to keep an evacuation opening closed.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a method for opening and closing a deaeration port used in bags for compressing futons and storing them in a low-volume manner, or for storing other items by reducing the amount of air inside the bag. This relates to the improvement of ingredients.

[Conventional technology]

This type of degassing port opening/closing device has been widely used in the past, but when it is closed, the valve body is pressed by a spring, which requires a large number of parts and a lot of effort to assemble. There was also a high risk of failure. In addition, in conventional valve parts, both the valve seat and the valve body are horizontal, and degassing flows horizontally at one end at the valve part, and the flow of degassing is not smooth, making it impossible to quickly degas.

[Problem that the invention attempts to solve]

Therefore, this invention has a structure that does not require springs, which makes assembly work easy, has a small number of parts, and can be provided at a low price.Furthermore, there is no vibration caused by failures caused by springs, and the degassing flow is smooth and quick. The purpose of the present invention is to provide a bag deaeration port opening/closing device that can perform deaeration work.

[Means to solve the problem]

For this purpose, the bag vent opening/closing device of the present invention has a ventilation hole in a depression formed in the center, a guide wall is formed above the depression, and a flange is formed on the outside. The valve body is placed in a seat that can be ventilated, and has a retaining structure so that it can move up and down, and has a space between it and the inner surface of the guide wall, and an O-ring is placed on the underside of the valve body. A presser with an upward opening is fitted to the outside of the upper part of the seat, and a lower cap with a ventilation window formed at an appropriate distance from the ventilation hole is attached to the bottom of the seat. It was made into a structure.

Furthermore, an annular groove is formed on one of the flange of the seat and an outwardly protruding flange portion of the holding tool corresponding to the flange, and a protrusion that fits into the groove is formed on the other side. However, the opening edge of the bag can be held between the collar and the flange.

Alternatively, a closing lid may be removably fitted onto the upper part of the presser during sealing, and the closing lid may be brought into contact with the valve body in the closed state.

[Function] The bag deaeration port opening/closing device configured as described above does not use a spring, so it has a small number of parts and is easy to assemble, and there is no risk of failure due to springs. In addition, the degassed air passing through the ventilation holes of the seat will smoothly flow upward, allowing for quick degassing.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the drawings shown as examples.

First, the embodiment shown in FIGS. 1 to 3 will be described.

This bag's deaeration port opening/closing tool includes a seat (1), a valve body (2), a presser (3), a lower cap (4), and a closure! (5) is the main component.

The seat (1) has a ventilation hole (
7), and a cylindrical guide wall (
8) and a flange (9) projecting outward, creating a structure that allows ventilation in the vertical direction.

The valve body (2) opens and closes the ventilation hole (7) which functions as the valve hole described above, and has a structure to prevent it from coming off from the seat (1), so that it can move up and down, and also has a structure that prevents it from coming off the seat (1). ) space between the inner surface (
10) and is arranged in the seat (1).

Note that this valve body (2) has a protrusion (11) that slopes like a forest.
), and this overhang (11) opens and closes the ventilation hole (7), and an O-ring (12) is provided on the lower surface of the overhang (11).

The holding tool (3) has a shape that is open at the top, and is fitted on the outside of the upper part of the seat tool (1).

The cap (4) forms a ventilation window (13) and is attached under the seat (1) with an appropriate distance between it and the ventilation hole (7).

Further, a flange portion (14) protruding outward of the collar (9) of the seat (1) and the presser (3) corresponding to the collar (9) is provided.
) is formed with an annular groove (15), and the other side is formed with a protrusion (16) that fits into the groove (15).

In the illustrated embodiment, the concave groove (15) is located on the collar (9), and the convex groove (15) is located on the collar (9).
16) is formed on the flange portion (14).

This collar (9) and flange portion (14) are configured to sandwich the opening edge of the bag (17).

In addition, a closing lid (5) is removably fitted onto the upper part of the presser (3), and furthermore, when fitted, the closing lid (5)
5) and the protrusion (18) of the valve body (5) are brought into contact with each other. Therefore, when the closing lid (5) is attached at the time of closing after degassing, the upper part of the opening/closing tool is covered by the closing M (5), and the valve body (5) is pressed in the closing direction.

The embodiment shown in FIGS. 5 to 7 has almost the same structure as the above embodiment, but the shapes of the valve mechanism of the seat (1) and the valve body (2) are slightly different.

That is, in this embodiment, the recessed part (6) is formed in the central part of the seat (1) in a vertically cylindrical shape, and the protruding part (11) of the valve body (2) is formed in a substantially U-shaped shape. It is formed into a letter shape.

In this embodiment, the protrusion (11) is inserted into the recess (6) in a removable manner, and the O
The ring (12) engages and disengages from the upper edge step of the recess (6) to close and open the valve.

Next, the usage state of the bag deaeration port opening/closing device having the above structure will be explained.

First, after placing the futon and other items in the bag (17),
Remove the closure M (5), connect the suction port (19) of the vacuum cleaner to the presser (3), and operate the vacuum cleaner to create suction. Then, the valve body (2) rises to form a ventilation space between it and the seat (1) as shown in Figures 1 and 4, and the bag (17)
The air inside is sucked out by a vacuum cleaner.

During this suction, the air inside the bag (17) is removed from the lower cap (4).
Since the ventilation hole (7) is reached through the ventilation window (13) of the bag (17), objects such as a futon stored in the bag (17) do not get cold in the ventilation hole (7) and air can be taken in smoothly. Furthermore, the air flowing in through the ventilation hole (7) is
1) Since the air flows diagonally upward through the outer periphery and the space (10), the air flow is smooth and fast.

In addition, in FIGS. 1 and 4, the valve body (2) and the guide wall (8) of the seat (1) appear in contact with each other to prevent ventilation, but the guide wall (8) is shown in FIG. As shown in Fig. 6, the inside has a concave and convex shape, and the air is removed from the concave space (10).After the vacuum cleaner finishes degassing the air from the concave space (10), it opens to the suction port (19). When the valve body (2) is removed, the air pressure inside the bag (17) is low, so the valve body (2) is automatically joined to the seat (1), and the ventilation space created between the two is closed. Furthermore, when the closure M (5) is attached, the valve body (2) is pressed in the closing direction by the closure lid (5), and as shown in Figs. It will remain closed.

In the second state, the bag (17) has a collar (9) and a flange (14).
), and the opening of the bag (17) is sealed by this deaeration port opening/closing device. The situation can be maintained more closely.

The illustrated reference numeral (20) is a double-sided tape, which is inserted as necessary to maintain a tight seal between the sandwiched bag (17) and the deaeration port opening/closing device.

〔Effect of the invention〕

The present invention has the above-described configuration, and therefore, since no spring is required to close the valve body (2), the number of parts is small, the cost is low, and the assembly work is easy. Furthermore, there is no risk of failure due to the spring, and there is nothing that obstructs the flow of degassing, so the air flow during suction is smooth and quick (degassing work can be done).

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing the bag deaeration port opening/closing device according to the present invention during suction. Figure 2 is a longitudinal sectional view when closed. FIG. 3 is an exploded perspective view. FIGS. 4 to 6 show other embodiments, and FIG. 4 is a longitudinal cross-sectional view showing the state during suction. FIG. 5 is a longitudinal sectional view when closed. FIG. 6 is an exploded perspective view.

Claims (1)

[Scope of Claims] 1. A vertically ventilable seat having a ventilation hole in a depression formed in the center, a guide wall above the depression, and a flange on the outside. The valve body has a retaining structure, is movable up and down, and is arranged with a space between it and the inner surface of the guide wall, and an O-ring is provided on the lower surface of the valve body, and the upper part of the seat The bag is characterized in that a lower cap is fitted under the seat with a presser which is open upwardly on the outside, and further has a ventilation window formed with an appropriate distance between it and the ventilation hole. Deaeration port opener. 2. An annular groove is formed in either the flange of the seat tool or the outwardly protruding flange portion of the presser corresponding to the flange,
2. The bag deaeration port opening/closing device according to claim 1, wherein a protruding strip is formed on the other side to fit into the groove, and the opening edge of the bag is held between the collar and the flange. 3. The bag deaeration port opening/closing device according to claim 1 or 2, wherein a closing lid is removably fitted onto the upper part of the holding device when the bag is sealed, and the closing lid is brought into contact with the valve body in the closed state.