JP2520769Y2 - Liquid discharge container - Google Patents

Description

[Detailed Description of the Invention] “Industrial application field” The present invention proposes a spray container, a foam container, and
Further, the present invention relates to a liquid ejection container or a liquid ejection container used as a container for ejecting liquid as it is.

"Prior Art" For example, as shown in Japanese Utility Model Laid-Open No. 64-25368, a container body,
A first valve having a suction valve at the bottom, which is suspended in the container body.
A cylinder and a first cylindrical piston fitted into the first cylinder, and a stem is erected upward from the container body by urging;
A push-down head with a nozzle was fitted to the upper end of the stem,
A vertical pump type liquid discharge container including an actuator with a discharge valve is known.

[Problems to be Solved by the Invention] A conventional vertical pump type liquid discharge container has a coil spring for urging the actuator upward in the first cylinder, and the coil spring sucks the coil spring into the cylinder. When the raised liquid comes into contact with the liquid, the spring is made of metal and thus easily rusts. When rust occurs, the rust may be mixed in the discharged liquid.

The present invention eliminates the above-mentioned conventional drawbacks by preventing the discharge liquid from touching the spring even if the spring is unnecessary or used auxiliary.

"Means for Solving the Problems" From a container body 1, a first cylinder 2 with a suction valve 3 vertically installed in the container body, and a first cylindrical piston 6 fitted in the first cylinder. In the liquid discharge container, which comprises the operator 5 with the discharge valve 8 in which the stem 7 is urged to the upper side of the container body to stand up, and the push-down head 10 with a nozzle is fitted to the upper end of the stem, An inward flange 15 is attached to the inner surface of the lower portion of the discharge valve 8, and radial grooves are formed in the lower surface of the inward flange and the upper surface of the first cylinder bottom wall 2a, and into the first cylindrical piston 6. The bottom plate 17a is inserted above the suction valve 3 and the bottom plate 17a
A second cylindrical piston in which the cylinder 17 is placed on the bottom wall of the first cylinder and further fitted in the upper part of the second cylinder in an airtight manner.
The top wall 21 at the upper end of the slide body 20 which is loosely inserted from 19 into the stem 7 to erect the tubular portion 18 is brought into contact with the lower surface of the inward flange.

[Operation] When the upper surface of the push-down head 10 is pushed down from the state shown in FIG. 1, the operator 5 descends with respect to the first cylinder 2 and the slide body 20 descends with respect to the second cylinder 17. Second
Since the cylinder 17 has a bottom and the sliding body 20 has a top, and the second cylindrical piston 19 at the lower end of the cylindrical portion of the sliding body is in airtight contact with the inner wall surface of the second cylinder, the air inside them is compressed as it descends. Urging the actuator 5 upward. 1st by moving the actuator down
The inside of the cylinder is also pressurized, the discharge valve 8 is opened to discharge the air in the first cylinder, and then the discharge valve is closed. Then, when the push-down head 10 is released, the volume of the air in the second cylinder 17 and the sliding body 20 restores the pressure to push up the operator 5, and the push-up causes the suction valve 3 to open to the inside of the first cylinder 2. The body fluid is sucked up, and the next pressing down of the pressing head
The liquid in the first cylinder is discharged from the nozzle 9.

[Example] First, a conventionally known structure will be briefly described.
Reference numeral 1 is a container body, 2 is a first cylinder having a suction valve 3 at the bottom, and 4 is a holding cylinder for fixing the cylinder in a vertically suspended state inside the container, which is screwed onto the outer surface of the neck of the container body and attached to the upper end. The outward flange of the first cylinder is sandwiched between the outward flange and the top surface of the container mouth. Reference numeral 5 denotes an operator, which raises a stem 7 upward from a container body from a first cylindrical piston 6 fitted in a first cylinder, provides a discharge valve 8 in an upper portion of the stem, and has a nozzle at an upper end portion of the stem. Push-down head with 9 10
Are fitted. Further, a screw cylinder 11 is fitted to the upper end of the first cylinder, and a stem fitting cylinder 12 hung vertically from the pressing head is screwed into the screw cylinder so that the actuator does not interfere with transportation. It is formed so as to maintain the lowered state of the operator.

In the present invention, the diameter of the first cylinder 2 and the stem 7 is made larger than that of the conventional one, and an inward flange 15 is attached to the inner surface of the stem upper portion below the discharge valve installation portion. The discharge valve 8 is provided in the cylindrical portion that stands up from the inner peripheral edge.

The lower surface of the inward flange 15 and the upper surface of the first cylinder bottom wall 2a are provided with protruding plates 16 radially to form radial grooves between these protruding plates.

In the already described first cylinder 2, a bottomed second cylinder 17 is provided on the first cylinder bottom wall. The second cylinder has an outer diameter smaller than the inner diameter of the first cylindrical piston, the upper end of which is loosely inserted into the first cylindrical piston 6, and the suction valve 3
The bottom plate 17a is provided so as to be located above.

Further, a second tubular piston 19 attached to the outer periphery of the lower end of the tubular portion 18 is fitted into the upper portion of the second cylinder 17 in an airtight manner to provide a tubular sliding body 20 with the upper end surface closed. The sliding body has a tubular portion 18
Is loosely inserted into the stem 7, and the upper surface of the outer peripheral portion of the top wall 21 thereof is brought into contact with the lower surface of the inner portion of the projecting plate 16. The sliding body is provided so as to descend together with the operator 5 by pushing down the depressing head 10, and the descending pressure raises the pressure in the second pressurizing chamber formed by the sliding body and the second cylinder 17, The restoring force of the compressed air in the second pressure chamber urges the actuator 5 upward through the sliding body 20. Actuator 5 only by the restoring force of the compressed air
If it is difficult to push up, the auxiliary spring 22 for pushing up the operator may be installed in the second pressure chamber.

[Advantages of the Invention] The present invention is configured as described above, and has a bottomed second cylinder 17 housed in the first cylinder 2 and a second cylinder airtightly fitted into the upper part of the second cylinder. With the sliding body 20 which erects the top end cylindrical portion 18 from the cylindrical piston 19, the inside of the second cylinder and the sliding body is pressed when the operator 5 is pushed down. When released, the actuator will be pushed up by the restoration of the pressurized air,
Therefore, unlike the conventional case, a spring is not required, and even if the auxiliary spring 22 for pushing down the operator is used as shown in the figure, the spring is for assisting pushing up of the operator by restoring compressed air. Therefore, the elasticity of the spring may be weaker than in the usual case, so that the cost can be reduced, and even if an auxiliary spring is used, the auxiliary spring can be used for the second cylinder 17 and the sliding body 20. Since it suffices that the auxiliary spring is internally provided, the auxiliary spring does not come into contact with the liquid to cause rusting, and even if the rusting occurs, there is no possibility that the rust will mix into the discharge liquid.

[Brief description of drawings]

FIG. 1 is a half cross-sectional view of the container of the present invention, and FIG. 2 is a half cross-sectional view showing a state in which an operator of the container is held in a depressed state. DESCRIPTION OF SYMBOLS 1 ... Container body, 2 ... 1st cylinder 5 ... Operator, 17 ... 2nd cylinder 20 ... Sliding body

Claims (1)

(57) [Scope of utility model registration request] 1. A container body 1, a first cylinder 2 with a suction valve 3 suspended in the container body, and a stem 7 from a first cylindrical piston 6 fitted in the first cylinder. In a liquid discharge container which is urged upward from the body and stands up, and a push-down head 10 with a nozzle is fitted to the upper end of the stem, and the operator 5 with a discharge valve 8, the discharge valve 8 above the stem An inward flange 15 is attached to the inner surface of the part, radial grooves are formed in the lower surface of the inward flange and the upper surface of the first cylinder bottom wall 2a, and the upper portion is loosely inserted into the first cylindrical piston 6. And the bottom plate 17a is positioned above the suction valve 3 to place the bottomed second cylinder 17 on the bottom wall of the first cylinder, and further to fit the second cylinder upper part in an airtight manner.
The cylindrical portion 19 is loosely inserted into the stem 7 and the cylindrical portion 18
A liquid discharge container characterized in that a top wall (21) at the upper end of a sliding body (20) standing upright is brought into contact with the lower surface of the inward flange.