JPH0245187Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention relates to a storage container that allows a fluid such as a liquid, a viscous substance, or a granular material, and particularly relates to a cylindrical fluid storage container having a movable bottom plate. .

BACKGROUND ART A container for storing a viscous substance such as printing ink or a fluid such as a liquid or a powder or granule includes a cylindrical part, one end of which is connected to one end of the cylindrical part, and the other end of which is connected to one end of the cylindrical part. a bellows portion having an outlet at the cylindrical portion; and a fluid storage chamber provided in the cylindrical portion so as to be movable in the axial direction only within the cylindrical portion and cooperating with the cylindrical portion and the bellows portion on one side. A fluid storage container having a piston-shaped movable bottom plate defining a This has already been proposed in No.-53775 (Japanese Patent Application Laid-Open No. 61-217374).

In the fluid storage container having the above-described structure, as the fluid in the fluid storage chamber, that is, the content decreases, the movable bottom plate moves into the cylindrical part in the axial direction, and this moves the inside of the cylindrical part into the bellows part. After moving to the connecting end with the bellows and becoming unable to move any further, the bellows contracts as the fluid in the fluid storage chamber is taken out, thereby causing the cylindrical part and the bellows to close together. The entire container body consisting of the container body moves, and this movement is detected by a limit switch or the like, thereby detecting the remaining amount of the contents, particularly whether or not there is any remaining amount of the contents.

Problems to be Solved by the Invention In the fluid storage container structured as described above, the bellows part is configured to be able to contract as the contents inside the container are taken out. If an axial force is applied to the bellows part due to an accidental impact or fall during the transportation process of the fluid storage container in the state closed by the cap, the bellows part easily contracts, and at this time, the fluid There is a risk that the internal pressure of the body storage chamber will rise and the movable bottom plate will fall off from the opening end on the opposite side of the connection end with the bellows part of the cylindrical part, climbing over the stopper claw, and the container body may burst. In either case, the fluid filled in the fluid storage chamber may leak.

In view of the above-mentioned problems, the present invention aims to provide a fluid storage container in which measures are taken to prevent the bellows portion from unnecessarily shrinking and deforming during the transportation process and the like.

Means for Solving the Problems According to the present invention, the above-mentioned object includes: a cylindrical portion; a bellows portion connected at one end to one end of the cylindrical portion and having an outlet at the other end; a piston-shaped movable bottom plate provided in the cylindrical part so as to be movable only in the axial direction of the cylindrical part, and cooperating with the cylindrical part and the bellows part on one side to define a fluid storage chamber; A fluid storage container having: a lock member that extends between the outlet and the cylindrical portion and prevents contraction of the bellows portion is removably attached. This is accomplished by a container.

Effects and Effects of the Invention According to the above-described structure, the attachment of the locking member prevents axial force from acting on the bellows portion even if an unexpected impact occurs on the fluid container during transportation or other processes. This prevents the contraction of the bellows portion, thereby preventing the movable bottom plate from falling off or the fluid storage container from bursting due to contraction of the bellows portion.

Embodiments Hereinafter, the present invention will be described in detail with reference to embodiments with reference to the accompanying drawings.

FIG. 1 shows one embodiment of a fluid storage container according to the present invention. In the figure, 1 indicates the container body of the fluid storage container, and 2 indicates the movable bottom plate.

The container body 1 includes a cylindrical portion 3 forming the main part of the container and a bellows portion 4 connected to one end of the cylindrical portion.
The whole body is made of a plastic having appropriate elasticity such as vinyl chloride. A side wall (shoulder) 5 is provided at the end of the bellows part 4 opposite to the end connected to the cylindrical part 3, and an outlet 6 is defined in the center of this end wall 5. An annular opening 7 is formed to protrude. A bellows portion 4 is continuously provided at one end of the cylindrical portion 3, while the other end is directly open, and an annular stopper claw 8 is formed protruding from the inner peripheral surface near the open end. has been done.

The movable bottom plate 2 includes a piston portion 9 that fits into the inner peripheral surface of the cylindrical portion 3 and is movable in the axial direction within the cylindrical portion 3, and a bellows formed protruding from the piston portion 9 on one side thereof. It has a protruding part 10 that can enter into the part 4, and when engaged with the stopper pawl 8, it can be moved to the right in the further drawings, that is, from the open end of the cylindrical part 3. It is prevented from falling off, and cooperates with the cylindrical part 3 and the bellows part 4 to define a fluid storage chamber 11 on the side of the bellows part 4 opposite to the open end.

The structure of the fluid storage container as described above is disclosed in the patent application filed in 1983.
It is similar to that of the fluid storage container shown in the specification and drawings of No. 277754 and Japanese Patent Application No. 60-53775.

In the fluid storage container according to the present invention, a locking member 1 for selectively inhibiting contraction of the bellows portion 4 is provided.
2 is provided. The locking member 12 includes a cap portion 13 which also serves as a cap for the outlet 6 and is screwed onto the outer periphery of the annular opening 7, and a connecting end 3a between the cap portion 13 and the bellows portion 4 of the cylindrical portion 3. and a cylindrical locking portion 14 extending around the outer periphery of the bellows portion 4 between the bellows portion 4 and the bellows portion 4.
The lock member 12 is fixed to the container body 1 by screwing its cap portion 13 to the outer circumference of the annular mouth portion 7 as shown in the figure. The cylindrical portion 3 contacts the connecting end 3a of the cylindrical portion 3 with the bellows portion 4, and its rigidity in the axial direction prevents contraction of the bellows portion 4.

By attaching the lock member 12 as described above, even if an axial force is applied to the container body 1, the axial force is prevented from acting on the bellows part 4, and the bellows part 4 is prevented from acting on the bellows part 4.
contraction is prohibited.

By attaching the locking member 12 during the transport process of the fluid storage container, unnecessary contraction of the bellows part 4 is avoided, and the internal pressure of the fluid storage chamber 11 increases due to the contraction of the bellows part 4. This prevents the movable bottom plate 2 from falling off and the container body 1 from bursting.

Further, since the locking member 12 is configured to cover the bellows part 4, the whole bellows part 4 is protected against external shocks.

2 and 3 show another embodiment of the fluid container according to the present invention. In FIGS. 2 and 3, parts corresponding to those in FIG. 1 are designated by the same reference numerals as in FIG. 1.

In the embodiment shown in FIG. 2, the lock member 12 is formed to match the shape of the tip of the bellows portion 4, and the cap portion 13 protrudes accordingly so that it can be used as a knob when attaching and detaching. There is.

In the embodiment shown in FIG. 3, the cap part and the locking part in the above-mentioned embodiment are constructed as separate members as a cap member 15 and a locking member 16, and the locking part is Working member 1
6 is fixed by screwing the cap member 15 to the outer periphery of the annular opening 7, thereby being sandwiched between the cap member 15 and the connecting end 3a of the bellows portion 4 of the cylindrical portion 3. It's becoming like that.

In either of the embodiments shown in FIGS. 2 and 3, the locking member 12 or the locking member 16
is attached to the container body 1, the bellows part 4
contraction is prohibited, and accidental contraction and deformation of the bellows portion 4 is prevented.

In any of the embodiments described above, the locking portion or locking member is configured as a cylindrical body that extends around the entire circumference of the bellows portion; It may have a plurality of leg portions spaced apart from each other.

In the above, the present invention has been described in detail with respect to specific embodiments, but the present invention is not limited to these, and it is understood that various embodiments are possible within the scope of the present invention. It will be clear to those skilled in the art.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing one embodiment of a fluid storage container according to the present invention, and FIGS. 2 and 3 are longitudinal sectional views showing other embodiments of the fluid storage container according to the invention. . DESCRIPTION OF SYMBOLS 1... Container body, 2... Movable bottom plate, 3... Cylindrical part, 4... Bellows part, 5... Side wall, 6... Outlet,
7... Annular opening, 8... Stopper claw, 9... Piston part, 10... Projection part, 11... Fluid storage chamber, 12... Lock member, 13... Cap part,
14...Lock action part, 15...Cap member,
16...Lock action member.

Claims (1)

[Scope of utility model registration request] a cylindrical portion; a bellows portion connected to one end of the cylindrical portion at one end and having an outlet at the other end; In the fluid storage container, the fluid storage container has a piston-shaped movable bottom plate that cooperates with the cylindrical portion and the bellows portion to define a fluid storage chamber on the side thereof, A fluid storage container characterized in that a locking member extending between the bellows portions and preventing contraction of the bellows portion is removably attached.