JPH0235635Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a liquid metering dispenser that is capable of pouring out a fixed amount of liquid from within a liquid container.

"Conventional technology" As a conventional liquid metering dispenser, for example,
-The invention of No. 14551 is known. The dispenser is
A measuring chamber whose upper surface is closed and has a through hole at the lower end of the peripheral wall is erected from the bottom wall of the container body which has an elastically compressible body and whose mouth and neck are erected, and a short cylindrical dispensing tube is inserted from the top wall of the container body. At the same time, the lower end of the pipe is fitted to the outer surface of the spouting cylinder to erect the liquid feeding pipe, and an air vent pipe is raised from the top wall on the side of the spouting cylinder to open a hole in the upper part of the container body. . In addition, a cylindrical stopper is fitted into the mouth and neck of the container body, and the upper end of the liquid feeding pipe is fitted to the lower end of the cylinder of the stopper, and the upper end surface of the spouting cylinder is inserted into the liquid feeding pipe through the valve seat. A ball valve is fitted so that it can move up and down.

``Problems to be solved by the invention'' In the conventional liquid dispensing device mentioned above, a ball valve seals the top end of the dispensing tube when the container is in an upright state, and when liquid is poured into the container, the air vent tube As air is discharged from the tube, liquid enters the measuring chamber through the through hole, and when the container body is inverted from this state, the ball valve leaves the valve seat and the liquid in the metering chamber is discharged from the cylindrical stopper. However, since the measuring chamber stands up from the bottom wall of the container body, and the liquid flows into the measuring chamber from the through hole at the bottom of the measuring chamber due to the water pressure inside the container, the water level of the liquid inside the container increases. When the liquid falls below the upper end of the measuring chamber, the water level of the liquid entering the measuring chamber becomes the same as the water level of the liquid inside the container, resulting in a drawback that measurement cannot be performed. In addition, the structure of the dispenser is such that the measuring chamber stands up from the bottom wall of the container body, and the dispensing tube stands up from the top wall of the measuring chamber, and the upper end of the pipe is located within the lower part of the mouth neck of the container body. The lower end of the liquid feeding tube is fitted to the upper end of the liquid feeding tube, and the air vent tube is made to stand up from the top wall of the metering chamber within the container body. It is inevitable that the fitting structure and assembly would be extremely difficult for mass production.

The present invention eliminates the above-mentioned drawbacks and is designed to automatically measure liquid by simply removing the cap from the liquid container, and to dispense the metered liquid by simply turning the liquid container upside down.

"Means for Solving the Problem" A cylinder member 3 equipped with a suction pipe 4 is installed by vertically extending the suction pipe up to the inner bottom of the liquid container 1 and fitting the cylinder member 3 into the mouth and neck of the liquid container in a watertight manner. A piston member 5, which also serves as a nozzle, is fitted within the nozzle so that it can be slid a predetermined distance by being biased upwardly by a spring 13,
A through hole 7 in the sliding direction is provided in the piston member, and a valve is formed at the inner end portion of the through hole 7 to allow liquid flow only upward, and a cap 19 for pushing and holding the piston member inward is provided as a liquid container. Removable.

``Operation'' When the cap 19 is removed from the cylindrical body 16 from the state shown in FIG. Due to this rise, the cylinder chamber A below the piston member 5 increases by a certain volume and becomes a negative pressure state, so a certain amount of liquid is sucked up from inside the liquid container 1 and the cylinder chamber A
fill the inside. After this, when the liquid metering dispenser is turned upside down, the ball valve 9 separates from the valve seat 11 due to its own weight, and the liquid in the cylinder chamber and suction pipe 4 passes through the through hole 7 and passage hole 12 and exits from the spout 8a. Poured out. In addition, in this state, the liquid at the bottom of the liquid container in the inhalation tube is descending to the mouth and neck side due to its own weight, creating a space, so no further liquid enters the inhalation tube 4, and a certain amount of liquid remains. is poured out only. Further, after all the liquid in the cylinder chamber has flowed out, air enters the liquid container through the through hole 7 and the passage hole 12, and the inside of the liquid container does not become a negative pressure.

After a certain amount of liquid has been dispensed from the liquid dispenser, return the liquid dispenser from the inverted position to the upright position.
When the cap 19 is further screwed into the thread of the cylinder, the closing plate 20 pushes down the piston member against the force of the spring, returning to the initial state. Therefore, by performing the above operation again, a certain amount of liquid can be automatically dispensed.

``Example'' Next, the liquid metering dispenser of the present invention will be explained with reference to the drawings. A cylinder member 3 is disposed within the mouth and neck portion 2 of the liquid container 1.
are fitted watertightly to the upper end flange 3 of the cylinder member.
Place a on the upper end of the mouth and neck. A small cylindrical portion 3b protrudes from the liquid container bottom side of the cylinder member 3, that is, from the lower end of the cylinder 3. A suction pipe 4 is communicated with the small cylindrical portion, and the suction pipe 4 extends to the bottom of the liquid container 1.

A piston member 5 which also serves as a nozzle is slidably fitted into the cylinder member 3, and an O-ring 6 is provided on the outer peripheral surface of the piston member to ensure water tightness with the inner peripheral surface of the cylinder member. A cylinder chamber A is formed between the lower end of the piston member and the lower part of the cylinder member. The upper part of the piston member 5 protrudes above the cylinder member 3 to form a liquid spouting tube 8, the piston member is provided with a through hole 7 in its sliding direction, and the upper end of the through hole 7 is formed into a liquid spouting port 8a. becomes. Through hole 7
A valve chamber 10 containing a ball valve 9 is formed in the lower part of the valve chamber 10, and a valve seat 11 is formed in the lower part of the valve chamber 10, so that the liquid can flow only outward between the valve seat and the ball valve. Forms a check valve. A passage groove 12 is provided at the upper end of the valve chamber 10 to allow liquid flow even when the ball valve comes into contact with the valve chamber.
When the liquid dispensing device is turned upside down and the ball valve comes into contact with the lower surface of the through hole 7, the liquid can flow out from the passage groove 12.

A spring 13 is disposed between the lower end surface of the piston member 5 and the lower end surface of the cylinder member 3 to bias the piston member 5 upward. A protruding piece 14 is provided on the outer periphery of the liquid spout cylinder 8 at the upper part of the piston member, and the lower limit of movement of the piston member is set until the protruding piece 14 hits the flange 3a of the cylinder member. Note that a member for regulating the lower limit of the piston member may be provided on the cylindrical body 16 similarly to the upper limit stopper 15 described later. The upward movement of the piston member 5 is controlled by the protrusion 1 placed on the upper limit stopper 15.
The upper limit stopper is provided at the upper end of the cylinder 16 that is screwed into the neck part 2 of the liquid container.
The flange 3a of the cylinder member is pressed against the mouth and neck.

A thread 18 is provided on the outer periphery of the cylinder 16, and a cap 19 is screwed into the thread 18. A closing plate 20 is attached to the back surface of the upper end of the cap 19.
9 is screwed onto the thread 18 of the cylinder, the closing plate 2
0 will push the piston member down against the force of the spring 13.

"Effects of the Invention" Since the present invention has the configuration described above, it is possible to eliminate all the drawbacks of the conventional examples described above. That is, since the measuring liquid is sucked into the cylinder chamber A through the suction pipe 4 extending vertically to the inner bottom of the liquid container 1 and measured, it is impossible to measure the liquid at the inner bottom of the container as in the case of the conventional example. Since there is no inconvenience of liquid remaining, the cylinder member 3 is fitted into the mouth and neck of the liquid container, and the piston member 5 is also fitted into the cylinder member, the above conventional example in which the metering mechanism is provided inside the bottom of the container The structure is so complicated that it is difficult to form a spout. Furthermore, automatic measurement can be performed simply by removing the cap 19, and the measured liquid can be poured out simply by inverting the container, making the operation extremely simple.

[Brief explanation of the drawing]

FIG. 1 is a half-sectional view of the liquid metering dispenser according to the present invention in a stored state, and FIG. 2 is a half-sectional view of the liquid metering dispenser with the cap removed. 3... Cylinder member, 5... Piston member, 7
...Through hole, 10...Valve chamber, 15...Upper limit stopper, 19...Cap.

Claims (1)

[Scope of utility model registration request] A cylinder member 3 with a suction pipe 4 is vertically disposed up to the inner bottom of the liquid container 1 to fit watertightly into the mouth and neck of the liquid container, and is urged upward by a spring 13 inside the cylinder member. Then, the piston member 5 which also serves as a nozzle is slidably fitted over a predetermined distance,
A through hole 7 in the sliding direction is provided in the piston member, and a valve is formed at the inner end portion of the through hole 7 to allow liquid to flow only upward, and a cap 19 for pushing and holding the piston member inward is provided as a liquid container. A liquid metering dispenser that is removably attached to the.