JPH0615848Y2 - Fixed volume liquid dispensing container - Google Patents

Description

[Detailed Description of the Invention] "Industrial field of application" The present invention relates to a metered-volume liquid dispensing container capable of, for example, dispensing a liquid detergent or the like almost in a fixed quantity.

Problems to be Solved by the Prior Art and Invention As a container of this type, for example, Japanese Utility Model Publication No. 51-2
There is a container of 9820 publication.

The container comprises a container body that stands up the mouth and neck, a stopper with a suction pipe fitted into the upper end of the mouth and neck, and a peripheral wall that is hung from the peripheral edge of the top wall to the outer surface of the mouth and neck. , A main member that erects a suction cylinder from the periphery of a valve hole formed in the center of the top wall thereof, and further erects a cylinder higher than the suction cylinder from the upper end of the peripheral wall, and a bottom opening hole through which the suction cylinder is inserted and withdrawn. And a piston that moves up and down in the cylinder by moving the suction cylinder in and out, and from the state in which the main member is slightly raised by a screwing operation with respect to the plug with the suction pipe, When the piston is pulled up, the inside of the cylinder becomes negative pressure and passes through the suction pipe, the valve hole, and the suction cylinder, and the liquid in the container is sucked up into the cylinder and stored up to the height of the suction cylinder. Tilt the container and install it on the top of the cylinder It was to discharge from the outlet.

In this type of conventional container of Japanese Utility Model Publication No. 51-29820, prior to the operation of pulling up the piston, the main member, which is a separate member from the piston, is sucked up against the stopper with the pipe and screwed into the neck of the container. Since it is configured to raise slightly by turning operation, it is troublesome to change the hand, and when pushing down the piston after pouring liquid, a means to positively release the air in the cylinder etc. to the outside. However, there is a problem that it is difficult to use because it requires force to push down the piston.

A liquid metering stopper having an improved ventilator in which the metering chamber and the piston portion are communicated with each other, and a second check valve for preventing backflow of air to the metering chamber is provided in the vent hole. Has been proposed (Shokaisho 61-146261).

The container shown here can suck up the liquid in the container into the metering chamber by screwing up the cap,
Further, after the measurement, if the cap is screwed down, the piston can be easily pushed down due to the presence of the second check valve.

However, since the second check valve in this container is formed by the vent hole provided in the piston and the ball valve element placed on the hole, for example, the cap is screwed up while holding the container. If the container is tilted during the operation, the ball valve element may move and the liquid may leak above the ball valve element.

Further, since the cap is screwed to the mouth and neck, it takes a long time to ascend and descend.

The present invention has been made in view of the above points, is easy to operate, does not require force to push down the piston, and even if the container is tilted, there is no risk of liquid leaking from the valve, and it is easy to attach and detach. The object is to propose an excellent metered-dose liquid dispensing container that does not take much time.

[Means for Solving Problems] In order to achieve the above object, the metered-dose liquid dispensing container according to the present invention comprises a container body 1 for erecting a mouth / neck portion 5, and a mounting portion 6 attached to the mouth / neck portion. A suction valve 9 is provided at the center of the bottom wall 8 of the first peripheral wall 7 that hangs down from the inside of the container to a suction pipe 10 that extends vertically from the suction valve to the bottom of the container. A cylinder member 2 which stands up a cylinder cylinder portion 11 from the peripheral edge of the bottom wall with a small gap, and a second peripheral wall 13 which is hung from the peripheral edge of the top wall 12 on the outer surface of the mounting portion or the mouth and neck.
A ring formed by fitting the lower part in a watertight and detachable manner, vertically fitting the rod-shaped piston portion 14 vertically extending from the top wall into the cylinder tubular portion, and drilling the lower outer surface of the rod-shaped piston portion. And a piston member 3 into which a piston ring 16 is fitted so as to be able to move up and down slightly in the groove 15.
An air intake hole 19 is formed in a bottom wall portion between the cylinder tubular portion and the first peripheral wall, and the piston ring moves upward in the ring groove between the contact surfaces of the ring groove and the piston ring. It is characterized in that an air escape passage 20 is additionally provided which is opened by opening and closed by moving downward.

"Operation" For example, from the state shown in FIG. 1, if the lower portion of the second peripheral wall 13 of the piston member 3 is unscrewed from the mounting portion 6 of the cylinder member 2 or the container body neck portion 5, and then the piston member is pulled upward, As the rod-shaped piston portion 14 rises with respect to the cylinder tubular portion 11, the inside of the cylinder tubular portion becomes negative pressure. At this time, since the piston ring 16 moves downward in the ring groove 15 by sliding friction and the air escape passage 20 is closed, the negative pressure state in the cylinder tubular portion is kept good and the container tilts. However, since the piston ring 16 does not move in the opening direction, there is no leakage of liquid from there.

When the suction valve 9 is opened by the above-mentioned negative pressure and the liquid in the container body 1 is sucked up into the cylinder cylinder portion through the suction pipe 10 and the rod-shaped piston portion 14 is completely withdrawn, the cylinder cylinder upper end surface It is sucked up and stored up to the water level which is almost the same height as the lowest part. It should be noted that, at the time of the suction, the inside of the container has a negative pressure, but the air introduced through the air suction hole 19 eliminates the negative pressure.

After that, the liquid in the cylinder tube portion may be discharged to the outside by inclining the container body or the like.

After discharging, the rod-shaped piston portion is again inserted into the cylinder tubular portion and pushed down, and finally the lower portion of the second peripheral wall is screwed to the mounting portion of the cylinder member or the neck of the container body. It takes less time to install the piston member compared to. Similarly, it does not take time to remove the piston member described above. At the time of pushing down, since the piston ring moves upward in the ring groove due to sliding friction to open the air escape passage, the air in the cylinder tubular portion passes through the air escape passage to the outside of the cylinder tubular portion. It is actively discharged.

[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the metered-dose liquid dispensing container according to the present invention includes a container body 1, a cylinder member 2, and a piston member 3.

The container body 1 is made of synthetic resin in which a threaded mouth-neck portion 5 is erected from the upper end of the body portion 4.

The cylinder member 2 includes a mounting portion 6 attached to the mouth / neck portion 5.
A suction valve 9 is provided at the central portion of the bottom wall 8 of the first peripheral wall 7 that hangs down from the inside of the container body, and a suction pipe 10 is hung from the suction valve 9 to the inside bottom of the container body 1, and the first peripheral wall 7 With a small gap from the bottom wall peripheral portion to the cylinder tube portion 11
To stand up.

In the illustrated example, the mounting portion 6 is formed by attaching an inward flange-shaped portion 6b to the inner surface of the middle portion of a screw cylinder 6a in which the lower half portion is screwed into the mouth / neck portion 5, and the inward flange-shaped portion 6b is formed. The first peripheral wall 7 is suspended from the inner peripheral edge of 6b. A screw thread is also formed on the outer surface of the upper half of the screw cylinder 6a.

The suction valve 9 has a tongue-shaped valve body 9b elastically supported by a support ring 9a for opening and closing a valve hole 9c formed in the bottom wall portion 8.

One half of the upper end surface of the cylinder tube portion 11 is obliquely cut.

The mounting portion 6, the first peripheral wall 7, the bottom wall 8 and the cylinder tube portion 11 are integrally molded using a synthetic resin material.

The piston member 3 is watertightly and detachably fitted to the outer surface of the mounting portion 6 or the mouth / neck portion 5, and the lower portion of the second peripheral wall 13 integrally extending from the peripheral edge of the top wall 12 is also vertically extended from the top wall 12. The rod-shaped piston portion 14 is vertically movably fitted in the cylinder tubular portion 11, and the piston ring 16 is fitted in a ring groove 15 formed on the outer surface of the lower portion of the rod-shaped piston portion 14 so that the piston ring 16 can be slightly moved vertically. It is a combination.

In the illustrated example, the lower portion of the second peripheral wall 13 is screwed onto the outer surface of the upper half of the screw cylinder 6a.

The rod-shaped piston portion 14 is a tubular portion 1 having a lower end surface opening integrally provided so as to extend downward from the top wall 12 and a small outer diameter portion 17a at the lower end portion.
7 and a lid body 18 with an outward flange 18a whose lower end surface is closed. Therefore, the ring groove 15 is formed by the lower end of the cylindrical portion 17 and the outward flange 18a of the lid 18 fixedly mounted on the lower end. The top wall 12, the second peripheral wall 13, and the tubular portion 17 are integrally molded using a synthetic resin material.

The piston ring 16 is made of an elastic material and has a predetermined sectional shape.

An air suction hole 19 is formed in the bottom wall 8 portion between the cylinder tube portion 11 and the first peripheral wall 7, and the ring groove is formed.
Between the contact surface between 15 and the piston ring 16, the piston ring
An air escape passage 20 is provided so that the air passage 16 is opened by moving upward in the ring groove 15 and closed by moving downward.

In the illustrated example, the air escape passage 20 is formed by vertically installing groove portions on the upper side surface and the bottom surface of the ring groove 15 and on the inner surface of the piston ring 16.

[Effect of the Invention] As described above, the container of the present invention is fitted with the piston ring 16 in the ring groove 15 formed on the outer surface of the lower portion of the rod-shaped piston portion so that the piston ring 16 can be slightly moved up and down. Between the contact surfaces of, the piston ring is opened by moving upward in the ring groove and closed by moving downward, so that an air escape passage 20 is attached, so when the rod-shaped piston portion descends, the ring cylinder is inserted from the passage 20. The air in the unit can be positively discharged to the outside, and the operating force is small, and even if the container is tilted when rising, the liquid does not leak from the piston ring portion.

Further, since the lower part of the second peripheral wall 13 vertically extending from the peripheral edge of the top wall 12 is watertightly and detachably fitted to the mounting portion or the outer surface of the mouth / neck portion, the attachment / detachment of the piston member 3 does not take time, and the air escape passage is provided. With the presence of, it is possible to quickly perform the pouring operation.

[Brief description of drawings]

FIG. 1 is a half sectional view showing an embodiment of the present invention, and FIG. 2 is a half sectional view showing a usage state. 1 ... Container body, 2 ... Cylinder member 3 ... Piston member

Claims (1)

[Scope of utility model registration request] 1. A container body 1 for erecting a mouth / neck portion 5, and a suction valve 9 provided at a central portion of a bottom wall 8 of a first peripheral wall 7 hanging from a mounting portion 6 attached to the mouth / neck portion into the container body. , While vertically extending the suction pipe 10 from the suction valve to the bottom of the container body,
A cylinder member 2 which erects a cylinder cylinder portion 11 from the peripheral portion of the bottom wall with a small gap between the peripheral wall of the first peripheral wall, and the outer peripheral surface of the mounting portion or the mouth / neck portion. Two
The lower portion of the peripheral wall 13 is watertightly and detachably fitted, and the rod-shaped piston portion 14 vertically hung from the top wall is vertically movably fitted into the cylinder tubular portion, and is drilled on the lower outer surface of the rod-shaped piston portion. And a piston member 3 into which a piston ring 16 is fitted so as to be capable of slightly moving up and down, and an air suction hole 19 is provided in a bottom wall portion between the cylinder tubular portion and the first peripheral wall. Along with drilling, between the contact surfaces of the ring groove and the piston ring, an air escape passage 20 is provided which is opened by the piston ring moving upward in the ring groove and closed by moving downward. Characteristic liquid dispensing container.