JPH076110Y2 - Liquid discharge container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a liquid discharge container for discharging a liquid in a container.

"Prior Art" A cylinder having a suction valve at the bottom, which is hung in a container body, and a stem that is urged upward from inside the cylinder to stand up and a push-down head with a nozzle fitted to the upper end of the stem. Also, it has an operating member with a discharge valve, and when the operating member is pushed down against the container body, the pressure inside the cylinder becomes high and the discharge valve opens, discharging the liquid in the cylinder from the nozzle and releasing it from its lowered state. It is widely used that the member is lifted up and the liquid in the container is sucked into the cylinder through the suction pipe hanging from the lower end of the cylinder by closing the discharge valve and opening the suction valve.

[Problems to be Solved by the Invention] When the liquid discharge container has a relatively high viscosity, in the conventional liquid discharge container, the liquid remaining in the nozzle hole may drip from the tip of the nozzle hole. There has been a drawback that the sagging impairs consumer confidence in the discharge container.

The main idea is that the rod-shaped member is erected from the bottom of the cylinder, the upper part of the rod-shaped member is watertightly inserted into the lower part of the stem, and the stem can be moved up and down with respect to the rod-shaped member. Only by making the inside of the stem a negative pressure, and sucking outside air from the nozzle to eliminate the negative pressure,
The above drawbacks are eliminated by sucking back the liquid remaining in the nozzle.

"Means for Solving the Problem" A cylinder 2 having a suction valve 6 at the bottom, which hangs down into the container body 1, and a stem 15 which is urged upward from inside the cylinder 15
And push down the head 17 with the nozzle 16 on the upper end of the stem.
And a rod-shaped member 31 erected from the inside lower part of the cylinder, and large outer diameter parts 21 and 22 are provided above and below the lower part of the stem to provide both large outer diameter parts. A discharge valve hole 23 is formed in the lower part of the stem portion 15c between them, the cylindrical piston 20 is formed on the outer surface of the stem portion, and the upper end of the cylindrical piston is in contact with the lower surface of the upper large outer diameter portion 21 when the operating member 18 descends from the cylinder and discharges. The valve hole 23 is opened, and the lower end of the cylindrical piston is in contact with the outer surface of the lower large outer diameter portion 22 and the discharge valve hole 23 is closed when the actuating member is lifted, so that the stem is slidably fitted with a time lag. Further, on the inner surface of the stem portion below the discharge valve hole 23, there is provided a skirt portion 24 for sealing which slides so as to be always in watertight contact with the outer surface of the rod portion 32 of the rod member.

[Operation] When the actuating member 18 is pushed down from the state shown in FIG. 1, the cylindrical piston 20 stopped against the stem 15 due to the frictional resistance against the cylinder 2, and the upper large outer diameter portion 21 contacts the upper end surface. It begins to descend with stem 15 for the first time by pushing down,
At this time, the discharge valve hole 23 communicates with the pressurizing chamber formed inside the cylinder below the lower large outer diameter portion 22 by leaving the lower end of the cylindrical piston 20 away from the lower large outer diameter portion 22, and thus Is discharged from the nozzle 16 through the stem 15. Further, the lower half of the rod-shaped member is inserted into the stem 15 by lowering the operating member. Then, when the actuating member 18 is released, the coil spring 12
The operating member 18 rises by pushing up, but the cylindrical piston 20 rises with the stem 15 after a short delay and the lower end surface of the cylindrical piston 20 contacts the upper surface of the lower large outer diameter portion 22 to close the discharge valve hole 23. Then, due to the rise, negative pressure in the cylinder causes suction valve 6
Opens, sucks the liquid in the container phase into the pressurizing chamber of the cylinder through the suction pipe 7, and then closes the suction valve 6. When the operating member rises, the rod-shaped member 31 leaves the upper end and the stem 15
Since the sealing skirt portion 24 provided around the inner surface of the stem below the discharge valve hole 23 is in watertight contact with the outer surface of the rod-shaped member, only the volume of the rod-shaped member extracted from the stem is removed. The inside of the stem has a negative pressure, and the viscous liquid remaining on the inner surface of the nozzle hole is sucked back into the stem by the negative pressure.

"Example" 1 is a container body, 2 is a cylinder suspended in the container body. The cylinder has an outward flange 3 attached to the upper end.
Is placed on the top surface of the container body via the packing 4, and the screw tube fitting cylinder 5 is erected from the upper surface of the inner peripheral portion of the outward flange. The lower part of the cylinder is formed as a small inner diameter part through a plurality of upward steps, a suction valve 6 is provided in the lower end part thereof, and a suction pipe 7 is fitted into the cylinder part 8 from the lower end part thereof.
Droop.

Reference numeral 10 denotes a mounting cylinder screwed to the outer surface of the neck of the container body, and an inward flange 11 attached to the upper end of the cylinder part for sandwiching the outward flange 3 of the cylinder and the packing between the top surface of the container body. To do.

From the inside of the cylinder 2, a stem 15 is erected by being urged upward by a coil spring 12, and a push-down head 17 with a nozzle 16 is fitted to the upper end of the stem 15. These stem and push-down head form an operating member 18, and a cylindrical piston that can move up and down a certain height on the outer surface of the lower part of the stem.
20 is fitted. Stem 15 is main pipe 15a as shown
The upper part of the short tube 15b may be fitted to the inner surface of the lower part of the. An upper large outer diameter portion 21 is provided around the lower end outer surface of the main pipe, and a lower large outer diameter portion 22 is also formed on the lower end outer surface of the short pipe 15b. The lower large outer diameter portion hangs down the large diameter cylindrical portion via an outward flange-shaped outward projecting portion. Also, the upper and lower large outer diameter portion 21,
A discharge valve hole 23 is formed in the lower portion of the stem portion 15c between the 22 and a cylindrical piston 20 is fitted to the outer surface of the stem portion 15c. The tubular piston may be formed as shown. That is, the skirt-shaped portions are respectively projected from the intermediate portion on the outer surface of the main cylinder 20a in the vertical direction and the tips of these skirt-shaped portions are brought into watertight contact with the inner wall surface of the cylinder. Further, the skirt-shaped portion is projected upward from the middle portion of the inner surface of the main cylinder, and the short pipe 15b is watertightly inserted into the cylindrical portion formed by the skirt-shaped portion. In the discharge valve hole 23, the cylindrical piston 20 is the stem portion.
With the lower limit of 15c, the tip of the inner skirt is in watertight contact with the outer surface of the short pipe above the discharge valve hole, and the lower end of the main cylinder 20a is in contact with the upper surface of the lower large outer diameter portion in a watertight manner, and the discharge valve hole 23 is formed. By blocking the in-cylinder liquid from flowing into the stem through it, and pushing down the operating member 18 from this state, the stopped state can be maintained until the upper large outer diameter portion 21 contacts the upper end of the cylindrical piston 20. The lower end of the cylindrical piston 20 separates from the lower large outer diameter portion 22 to open the flow path to the discharge valve hole, and then the upper large outer diameter portion of the cylindrical piston 20.
The stem and the cylindrical piston are both lowered by pushing down 20. A sealing skirt portion 24 is erected upward inward from the inner surface of the stem below the discharge valve hole 23.

Reference numeral 30 denotes a screw tube fitted to the above-described fitting cylinder 5, and the stem 15 is vertically movably inserted into the screw tube hole to prevent the stem from being pulled out. A female thread is formed on the inner surface of the upper part of the screw tube, and a stem fitting cylinder 17a hanging from the lower surface of the pressing head is screwed into the female thread, which makes the container bulky and makes packaging inconvenient. Is being prevented.

The rod-shaped member 31 is erected from the inside of the cylinder. The member hangs a tube 33 from the middle or underneath of the rod portion 32 through an outward projecting portion, and an outward flange-shaped foot piece 34 attached to the lower end of the tube.
Is placed on the suction valve 6 or on the upward step provided on the cylinder wall above, and the coil spring 12 for urging the operating member is mounted between the upper surface of the foot 34 and the lower surface of the stem as described above. ing. Further, a through hole 35 is bored in the projecting portion, and the rod portion 32 is inserted into the sealing skirt portion 24 and extended into the stem 15. Sealing skirt portion 24 Tip is rod portion 32
It is provided so as to move up and down with respect to the cylinder and the rod-shaped member 31 while being in watertight contact with the outer surface. The lower end of the rod portion 32 is positioned with a small gap between it and the ball valve upper surface of the suction valve to prevent the ball valve from being pulled out upward.

[Advantages of the Invention] Since the present invention has the above-described configuration, the operating member 18 descends and then rises until the discharge valve formed by the discharge valve hole 23 and the cylindrical piston 20 is closed. Is extracted from the inside of the stem 15 of the actuating member, leaving only the upper part thereof, so that the inside of the stem can be made under negative pressure by the volume of the extracted portion of the rod. Since the negative pressure state is canceled by sucking the outside air from the nozzle 16, the viscous liquid remaining in the nozzle 16 is sucked back into the stem by the sucking of the outside air, and thus the liquid from the tip of the nozzle is thus sucked. It is possible to prevent dripping.

[Brief description of drawings]

FIG. 1 is a half cross-sectional view of the liquid discharge container of the present invention, and FIG. 2 is a half cross-sectional view in a state in which an operating member of the container is pushed down and screwed into a cylinder. 2 …… Cylinder, 18 …… Operating member 31 …… Bar-shaped member

Claims (1)

[Scope of utility model registration request] 1. A suction valve 6 at the bottom, which hangs down into the container body 1.
A cylinder 2 having the above, a stem 15 is erected by being urged upward from the inside of the cylinder, an operating member 18 having a pressing head 17 with a nozzle 16 fitted on the upper end of the stem, and erected from the inside lower part of the cylinder. And a large outer diameter portion 21, 22 is provided above and below the lower portion of the stem, and a discharge valve hole 23 is formed in the lower portion of the stem portion 15c between these large outer diameter portions. The cylindrical piston 20 is provided on the outer surface of the stem portion, the upper end of the cylindrical piston contacts the lower surface of the upper large outer diameter portion 21 and the discharge valve hole 23 is opened when the operating member 18 with respect to the cylinder is lowered, and the lower end of the cylindrical piston is opened when the operating member is raised. It is in contact with the outer surface of the lower large outer diameter portion 22 and closes the discharge valve hole 23 so as to be slidably fitted to the stem with a time lag. A seal that slides in contact with the outer surface of the rod 32 of the member while always contacting it in a watertight manner. Liquid dispensing container, characterized in that it has provided around the skirt portion 24.