JP2008106859A - Bottom plate for pressurized vessel and pressurized vessel having bottom plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate storage of a member used with a pressurized vessel and prevent missing of the member by housing the member integrally with the pressurized vessel. <P>SOLUTION: A bottom plate for the pressurized vessel is in a dome shape bent upward and has a projection portion for holding the member downward, and the pressurized vessel has the bottom plate. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bottom plate for a pressurized container and a pressurized container having the bottom plate.

The inventor has invented a cap for completely discharging the internal gas after use, such as a spray can, an aerosol can, a gas cylinder for a stovetop, and a camping gas cylinder, and has applied for a patent. However, there is a problem that it is inconvenient if the cap is not at hand at the time of disposal, and it is easy to lose because the cap is small.
Japanese Patent Application No. 2006-137140

  The present invention has been made in order to integrally hold the members used in the pressurized container including the cap in the pressurized container.

  The present inventor has intensively developed to solve the above-mentioned problems, but has found that the dome shape of the bottom plate of a pressure vessel that has been conventionally used can be changed. That is, conventionally, only a dome-shaped object having a smooth surface curved upward is used as the bottom surface of the pressure vessel. This is because, if this shape is changed, the pressure resistance is lowered, which is considered to be undesirable. However, in practice, it has been found that the pressure resistance is maintained at a practical level even if the shape of the bottom surface is slightly changed. The present invention has been made based on such findings.

A first aspect of the present invention relates to a bottom plate of a dome-shaped pressurized container that is curved in an upward direction, a bottom plate having a protruding portion for holding a member in a downward direction, and a pressurized container having such a bottom plate. .
In the present invention, a projection is formed in the downward direction on the bottom plate of the dome-shaped pressurized container that is curved in the upward direction that has been conventionally used. The dome shape curved upward refers to a shape that is recessed in a bowl shape toward the inside of the container. The downward direction refers to a direction from the bottom surface of the container to the outside. Therefore, having a protruding portion in the downward direction means having a protruding portion formed so as to protrude in the outer direction of the container from the dome-shaped surface curved in the inner direction. Such a protruding portion can have a shape suitable for holding a member used in association with the pressurized container.

The second aspect of the present invention relates to a bottom plate of a dome-shaped pressurized container that is curved in the upward direction, a bottom plate having a protruding portion for holding a member in the upward direction, and a pressurized container having such a bottom plate. .
In this aspect, a protrusion is formed in the upward direction on the bottom plate of the dome-shaped pressurized container that is curved in the upward direction that has been conventionally used. The upward direction refers to the direction from the bottom of the container toward the inside. Therefore, having the protruding portion in the upward direction means having a protruding portion formed so as to protrude in the inner direction of the container from the dome-shaped surface curved in the inner direction of the container. Such a protruding portion can have a shape suitable for holding a member used in association with the pressurized container.

  The member means a member used accompanying the pressurized container, that is, a member used by being attached to the pressurized container before, during, or after use of the pressurized container. For example, an internal gas discharge device for a pressurized container, a spare nozzle, a container lid, a nozzle adapter, and the like can be given. The nozzle adapter refers to an adapter that is attached to the nozzle to change the injection characteristics, such as an adapter for injecting into a narrow gap or an adapter for injecting into a fold.

  The shape of the protrusion is arbitrary, but it is desirable that the protrusion can be stably fixed to the protrusion. In the case of having a downward projection, the member is held outside the projection, so that the outer surface of the projection corresponds to the inner surface of the member. On the other hand, in the case of having an upward protrusion, the member is held inside the protrusion, so that the inner surface of the protrusion corresponds to the outer surface of the member.

  In the following, the case of the downward projection will be described, but the present invention can be similarly implemented even in the upward direction, and those skilled in the art will understand the bottom plate having the upward projection based on the following description and It is easy to produce a pressurized container having it.

When a device for discharging the internal gas of a pressurized container or a lid of a container is used as a member, the member has a cap shape, and thus a cylindrical shape having a circular or polygonal cross section that is inscribed in the cross sectional shape of the cap. Alternatively, it may be a columnar protrusion. Furthermore, the tip can be made thinner and tapered. In order to facilitate attachment and detachment of the member, irregularities may be provided on the side surface of the protrusion. In the case of a nozzle adapter or a lid, a screw can be provided.
In the case of a spare nozzle, it may have a recess to hold the tip or end of the nozzle, or a nozzle storage member may be attached to a cylindrical or columnar protrusion, or via a rubber tube or the like. May be attached. Similarly, in the case of a nozzle adapter, it can be preferably fixed to the bottom of the container by any one of the methods described above.

  The bottom plate of the present invention can be easily produced by a known metal forming method, for example, press working.

The present invention further relates to a pressurized container having the bottom plate of the present invention.
The bottom plate of the present invention may be attached to the body portion of the container by a known method such as caulking, or may be integrally formed with the body portion.
In the present invention, the pressurized container refers to a container in which the contents are held under a pressurized condition, such as a spray can, an aerosol can, a gas cylinder for a stovetop, and a gas cylinder for camping.

  According to the present invention, the member used with the pressurized container can be accommodated integrally with the pressurized container. The member can be easily stored and can be prevented from being lost.

An example of a pressurized container having a bottom plate of the present invention is shown in FIG.
A dome-shaped bottom plate 1 curved upward is attached to the pressurized container 2. And the baseplate 1 has the projection part 3 for hold | maintaining a member in the downward direction. In order not to impair the pressure resistance of the container, the protruding portion is preferably provided at the top of the dome, that is, substantially at the center of the bottom plate as shown in FIG.

A member used in association with the pressurized container is attached to the protrusion. As an example of such a member, there is an internal gas discharge device for a cylinder which is a pressurized container described in Japanese Patent Application No. 2006-137140. Hereinafter, the internal gas discharge device for the cylinder will be described.
The cap has a length shorter than the exposed portion of the nozzle, and is a cap for discharging the internal gas of the pressurized container that can be fitted to the nozzle base of the pressurized container. In the cross-section in the lateral direction of the contacting part, only a part of the cap is in close contact with the nozzle base of the pressurized container to fix the cap to the nozzle base, and part of the cap does not contact the nozzle base of the pressurized container This is a cap for discharging the internal gas of the pressurized container, which secures a flow path for the gas discharged into the container. Typically, this cap is hollow and has a cup-like shape.
In a preferred embodiment, the cross-sectional shape of the cap is substantially square in the cross-section in the lateral direction of the portion where the nozzle base of the pressure vessel and the cap are in contact with each other, and is in close contact with the nozzle base of the pressure vessel at the linear portion. In a different aspect, the cross-sectional shape of the cap has at least one protruding portion inward in the lateral cross section of the portion where the nozzle base portion of the pressurized container and the cap contact, and the nozzle of the pressurized container in the protruding portion Close contact with the base.

  The exposed portion of the nozzle refers to the nozzle portion of the aerosol valve that is exposed to the outside after removing the aerosol injection cap and the like, and the mountain cap portion that holds the nozzle portion. When discharging the internal gas, it is necessary to push the cap and push the nozzle through the upper surface of the cap, so that the length of the cap needs to be shorter than the height of the exposed portion of the nozzle. The nozzle base of the pressurized container refers to the rising portion (15 in FIG. 3) of the mountain cap that holds the valve housing. “Fitable” means that the cap can be fixed to the nozzle base by fitting the cap to the nozzle base.

  The cross section in the lateral direction of the portion where the nozzle base and the cap are in contact refers to the cross section of the portion where the nozzle base and the cap are in contact in a direction perpendicular to the length direction of the nozzle. In such a cross section, only a part of the cap is in close contact with the nozzle base of the pressurized container to fix the cap to the nozzle base, and a part of the cap ensures a gas flow path without contacting the nozzle base of the pressurized container. To do. That is, a part of the cap is in close contact with the nozzle base of the pressurized container and the cap is firmly fitted and fixed to the nozzle, and a part of the cap does not contact the nozzle base of the pressurized container and the internal gas is discharged To maintain a flow path for outflow.

  The cap is hollow inside and has an opening in the direction in which the cap is inserted. The cap typically has a cup-like shape with a shortest diameter of the opening of about 10 mm and a height of about 10-15 mm. In general, the cap can be manufactured from a thin tin plate, and since the shape is not complicated, the cap can be manufactured relatively inexpensively.

  The cap is fitted to the nozzle of the pressurized container, pushed from above, the tip of the nozzle is pushed in on the upper surface of the cap, and the gas inside the pressurized container is discharged. At this time, for example, a cross-shaped projection in the inner direction is provided so that the upper surface of the cap does not block the nozzle hole. A part of the cap is in close contact with the nozzle base of the pressurized container, and a part of the cap is not in contact with the nozzle base of the pressurized container. By pushing diagonally, the cap can be easily removed from the nozzle, and gas discharge can be stopped.

  By using such a cap, it is possible to obtain a degassing device for a pressurized container that can be easily stopped during the degassing operation and can be manufactured at a lower cost. Furthermore, this cap can be discarded while attached to the discarded pressurized container, and if the cap is fitted, the effect that the gas in the pressurized container can be visually confirmed can be obtained. It is done.

The cap will be described below with reference to the drawings.
FIG. 3 shows a typical structure example of an aerosol can. The nozzle 12 is held by a valve housing 13 and a mountain cap 14 that is fastened thereto. The rising portion of the mountain cap 14 which is the nozzle base is indicated by 15. The exposed portion length of the nozzle refers to the distance between the apex of the nozzle 12 and the bottom portion 16 of the mountain cap. Further, the cross section in the lateral direction of the portion where the nozzle base and the cap are in contact means the cross section in the direction perpendicular to the length direction of the nozzle of the portion in contact with the nozzle base when the cap is fitted to the nozzle. . For example, a cross section taken along line AA in FIG.

A preferred embodiment cap is shown in FIGS. 4-6. 4 is a front cross-sectional view when the cap is used, and FIG. 5 is a view when the lower side is seen from the line BB in FIG. FIG. 6 is a cross-sectional view taken along line AA of FIG. 3 when caps of different modes are fitted.
The cap has a section that is shorter and longer than the diameter of the nozzle base in the cross section of the section that contacts the nozzle base, and contacts the nozzle base at a section that is shorter than the diameter of the nozzle base and securely fits and fixes. Is done. Further, in a portion longer than the diameter of the nozzle base, a space is formed between the nozzle base and the cap, and the flow path of the exhausted internal gas is maintained.

  On the upper surface of the cap shown in FIGS. 4 and 5, a cross-shaped projection 19 is provided in the inner direction. FIG. 4 depicts a state immediately before this protrusion comes into contact with the nozzle. When the cap is further pushed in, the projection comes into contact with the nozzle, the nozzle is pushed in, and the gas is discharged through a flow path secured between the projection and the nozzle.

  FIG. 5 shows an aspect in which the cross-sectional shape of the portion of the cap that contacts the nozzle base is substantially square. The width of the rectangular straight portion is made shorter than the diameter of the nozzle base, the nozzle base is sandwiched by the straight portion, and the cap is fixed. Also, the square corners do not contact the nozzle base, and the exhausted gas passes through the space between them and flows out. Furthermore, a protrusion can be provided on the straight portion, and it can be more strongly fitted into the nozzle base.

  FIG. 5 shows the shape of the cross-shaped protrusion 19 by a dotted line. The protrusion is above the BB line, but is shown for convenience in order to show the positional relationship between the nozzle hole and the cross-shaped protrusion. With this cross-shaped projection, the nozzle can be pushed in without blocking the nozzle hole. In addition, although the cross-shaped protrusion was illustrated, if the nozzle can be pushed in without blocking a nozzle hole, the shape can be arbitrary.

  FIG. 6 shows an aspect in which the cross-sectional shape of the portion that contacts the nozzle base of the cap has a protruding portion protruding inward. With this protrusion, the cap is firmly fitted into the nozzle base and fixed.

  As an example of the cross-sectional shape of the portion that contacts the nozzle base of the cap, those having a rectangular portion in FIG. 5 and those having a protruding portion in FIG. 6 are shown, but the cross-sectional shape is not limited to these, It can be of any shape that can be securely fitted to the nozzle base and ensures a flow path for the exhaust gas.

As mentioned above, it is the bottom plate of the dome-shaped pressurization container curved in the upper direction, which is the first aspect of the present invention, and the bottom plate having the protruding portion for holding the member in the downward direction, and the pressure having the same The container has been described.
A second aspect of the present invention relates to a bottom plate of a dome-shaped pressurized container that is curved upward, and a bottom plate having a protruding portion for holding a member upward, and a pressurized container having the same. The second aspect is different from the first aspect only in that the protrusions are formed in the upward direction, that is, the inner direction of the container. As described above, the bottom plate of the second aspect and the pressurized container having the same can be manufactured based on the above description.

7 and 8 show a front view and a bottom view of an example of the pressurized container according to the second aspect of the present invention. As is clear from comparison with FIGS. 1 and 2 showing the first embodiment, in FIG. 7, the protrusion 3 protrudes upward, that is, inward of the container. Further, the protrusion is formed substantially at the center of the bottom plate of the dome-shaped pressurized container.
Other requirements can be selected and determined in the same manner as in the first aspect.

It is a front view of the example of the pressurized container of the 1st mode of the present invention. It is a bottom view of the example of the pressurized container of the 1st mode of the present invention. It is a figure which shows the typical structural example of an aerosol can. It is front sectional drawing at the time of use of a cap. It is a cross-sectional view at the time of use of a cap. It is sectional drawing at the time of use of a cap. It is a front view of the example of the pressurization container of the 2nd aspect of this invention. It is a bottom view of the example of the pressurized container of the 2nd aspect of this invention.

Explanation of symbols

1: Bottom plate 2: Pressurized container 3: Projection 11: Aerosol can 12: Nozzle 13: Aerosol valve 14: Mountain cap 15: Standing portion 16 of mountain cap 8: Bottom portion 17 of mountain cap 17: Cap 18: Nozzle hole 19: Cruciform protrusion

Claims (7)

A bottom plate of a dome-shaped pressurized container curved upward, and having a protruding portion for holding a member downward. A bottom plate of a dome-shaped pressurized container curved upward, and having a protruding portion for holding a member upward. A pressurized container having the bottom plate according to claim 1. A pressurized container having the bottom plate according to claim 2. The pressurized container according to claim 3 or 4, wherein the member is a device for discharging an internal gas of the pressurized container, a preliminary nozzle, a container lid, or a nozzle adapter. The apparatus for discharging the internal gas of the pressurized container is a cap for discharging the internal gas of the pressurized container having a shorter length than the exposed part of the nozzle and can be fitted to the nozzle base of the pressurized container. In the cross section in the lateral direction of the portion where the nozzle base of the container and the cap contact, only a part of the cap is in close contact with the nozzle base of the pressurized container to fix the cap to the nozzle base, and part of the cap is a pressurized container 5. The pressurized container according to claim 3, wherein the pressurized container is a cap for discharging an internal gas of the pressurized container that secures a flow path of the gas discharged without contacting the nozzle base. The pressurization container according to any one of claims 1 to 6, which is a pressurization container selected from a spray can, an aerosol can, a gas cylinder for a stovetop, and a gas cylinder for camping.

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