JP2006219171A - Container having liquid discharging pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container having a liquid discharging pump enabling a person to use liquid contained in the container completely, adjust a discharging amount through one pumping operation and easily re-fill liquid. <P>SOLUTION: There is provided an upside-down structure having both a pump and a discharging port arranged at the lower part of a tank 9 storing liquid. An openable/closable lid 8 is installed at the upper part of the tank, an insertion length of a cylinder inserted into a boss part formed at the lower part of a tank bottom surface is extended or retracted to make an amount of stroke of a piston moving up and down in the cylinder variable. The aforesaid problem is resolved by arranging the pump capable of adjusting an amount of liquid discharged through one pumping operation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a container with a liquid discharge pump used as a liquid storage container such as shampoo, rinse, body soap, hand soap and the like.

  As a liquid storage container such as shampoo, rinse, body soap, hand soap, etc., a container with a liquid discharge pump as shown in FIG. 7 is known.

  This container with a liquid discharge pump has a pump mechanism built in the cap of a bottle-shaped container, and by depressing the head at the top of the pump, a certain amount of liquid is sucked from the container and discharged from the discharge port to the palm. It is.

  This container with a liquid discharge pump is economical because it can be refilled with a large amount of content compared to a container that discharges liquid by gripping and compressing the container by holding and inverting the conventional container, At present, this container with a liquid discharge pump has become the mainstream because the liquid discharge operation is simple.

  In recent years, refilling liquid sealed in a pack has been sold separately for the purpose of reducing the amount of waste discharged and reducing costs, so that refilling liquid can be replenished when the liquid in the container is reduced. Yes.

  This container with a liquid discharge pump is formed so that the center of the bottom of the container is higher than the outer periphery of the bottom so that no rattling occurs during installation, and the suction port to the pump is spaced from the center of the bottom of the container. It is impossible to suck up the liquid to the end because it is installed with a gap, and in order to use up the liquid to the end, it is necessary to remove the cap and invert the container to drop the liquid on the palm. It was.

  In this container with a liquid discharge pump, the stroke amount from when the head is pressed down to when it is stopped cannot be changed during the discharge operation, so the discharge amount by one pumping operation is constant. Therefore, in order to adjust to the desired discharge amount, the stroke amount of pressing the pump is arbitrarily adjusted to reduce the discharge amount, and the pumping operation is performed twice or more to increase the discharge amount. I needed it.

  There are various types of containers with liquid discharge pumps depending on the brand of the product, and the brand of liquid used for each user in a household may differ, but there are many types of pumps. In some cases, it is difficult to install the attached liquid discharge container in a limited space in a bathroom or a washroom.

  The cap of the container with the liquid discharge pump has a small diameter, making it difficult to refill the liquid. In some cases, the liquid is spilled or overflowed.

  In order to solve the above-mentioned problem, the invention according to claim 1 is provided with an openable / closable lid on the upper part of the tank for storing the liquid, and the bottom surface of the tank has an inclination that descends toward the pump part. A pump part with a built-in check valve is installed at the bottom, and a structure that discharges the liquid inside the tank by pressing down the plate installed at the tip of the piston rod that extends downward from the inside of the pump, that is, an inverted structure Features.

  According to the second aspect of the present invention, the stroke length of the piston that moves up and down in the cylinder can be varied by extending or retracting the insertion length of the cylinder inserted into the boss formed at the bottom bottom of the tank for storing the liquid by a cam or a screw. Thus, a pump is provided which can adjust the discharge amount of the liquid by one pumping operation in several steps or steplessly.

  According to a third aspect of the present invention, there is provided a disk valve in which a piston having a flow path hole communicating with a tank chamber and a cylinder chamber is in contact with a piston upper end surface on an outer peripheral side from the flow path hole to open and close the flow path; A check valve mechanism is provided that opens and closes the flow path by sliding between a stopper valve that opens and closes the flow path by contacting the lower end surface of the piston on the inner peripheral side of the flow path hole.

  In the container with a liquid discharge pump according to claim 1, since the pump is installed below the bottom of the inclined tank, the cap is removed and the container is turned upside down by removing the cap so that the liquid can be used up to the end. It is economical that the liquid can be used up to the end without requiring a very troublesome operation of dripping.

By rotating the cylinder part and adjusting the insertion length into the tank part, the discharge amount by one pumping operation can be adjusted, so if you want to reduce the discharge amount, adjust the stroke amount to press the pump arbitrarily However, when it is desired to increase the discharge amount, a desired discharge amount can be obtained without requiring the troublesome operation of performing the pumping operation twice or more.

The plate provided on the piston rod at the bottom of the pump is pressed with the thumb and the discharged liquid can be received by the palm, so that the discharge operation can be performed with one hand.

Since the lid installed at the upper part of the tank is large, the content liquid can be easily refilled without spilling.

Since a plurality of containers can be installed one on top of the other or attached to a wall surface, a larger number of containers can be installed in a limited space than before.

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

FIG. 1 shows a stationary type embodiment of the product of the present invention. The main body 1 is provided with a tank 9 at the upper part, and the lower part is surrounded by a frame 1b on the side and back, and a space is provided so that a hand can be placed under the pump to receive the liquid in the palm. The bottom surface 1a of the tank is inclined downward toward the center, and a pump portion comprising a cylinder 2, a piston 3, a piston rod 4, a disk valve 5, a plate 6 and a spring 7 is fitted and engaged with the bottom surface of the tank. ing. A step portion 8 a is provided on the outer peripheral portion of the lid 8, and a lower end 1 c of another main body 1 can be overlaid on the step portion 8 a. The main body 1 is provided with air intake pores 1d that communicate from the bottom of the tank to the inside of the tank.

FIG. 2 shows an example of the wall-mounted type of the product of the present invention. The wall mounting attachment 11 is fixed to the wall surface with screws, double-sided tape, suction cups, etc., and hooked to the wall mounting attachment 11 with a hook 1e provided on the main body 1.

FIG. 3 shows an embodiment of a discharge amount adjusting mechanism using a cam mechanism provided at the insertion portion of the main body and the cylinder portion. FIG. 3 is a view of a structure in which the discharge amount can be adjusted in three stages, (E) is a side view, and (F) is a BB cross-sectional view.

An inner diameter 2a of the cylinder 2 is slidably fitted and engaged with a fitting portion 1f provided with a cylinder 2 provided at the bottom of the bottom surface of the main body 1. The cylinder 2 is formed of an elastically deformable material, and when assembled, the cylinder 2 is forcibly inserted into the fitting portion 1f of the main body 1 and a claw 2c provided on the inner diameter 2a of the cylinder 2 is fitted with the fitting portion 1f of the main body 1. The cylinder 2 does not come out of the main body 1 after assembling. The groove 1g provided in the fitting portion 1f of the main body 1 includes inclined step portions 1h, 1j, and 1k and step portions 1m and 1n that serve as stoppers, and the claw 2c provided on the inner diameter 2a of the cylinder 2 is inclined. The step 2d is engaged. When it is desired to reduce the discharge amount, when the cylinder 2 is rotated to the right, the inclined step portion 2d of the claw 2c provided on the inner diameter 2a of the cylinder 2 moves on the inclined step portion 1j provided in the groove 1g of the main body 1. If the side 2e of the claw portion 2c is moved upward while being slid and stopped when it is caught by the stopper 1n of the tank 1, the cylinder 2 moves upward by L1. As a result, the stroke amount of the piston 3 installed in the cylinder is reduced by L1, and the volume of the cylinder chamber 10 is reduced, whereby the discharge amount is reduced. When it is desired to increase the discharge amount, the cylinder 2 is pushed upward, the side surface 2e of the claw portion 2c is removed from the stopper 1n of the main body 1 and rotated leftward, and the inclined portion 2d of the claw 2c provided on the inner diameter 2a of the cylinder 2 is inclined. Moves downward while sliding on the inclined step portion 1j provided in the groove 1g of the main body 1, and when the side surface 2e of the claw portion 2c is caught by the stopper 1m of the main body 1, the cylinder 2 moves downward by L1. Will move. Thereby, the stroke amount of the piston 3 installed inside the cylinder is increased by L1, and the volume of the cylinder chamber 10 is increased, whereby the discharge amount is increased.

Next, a method for calculating the discharge amount will be described. The outer diameter of the piston rod 4 is D1, the inner diameter of the cylinder 2 is D2, the stroke variable amount of the one-step discharge amount adjusting mechanism is L1, the stroke amount of the piston 3 with the discharge amount adjusted to the minimum is L2, and the discharge amount is L2. Let L3 be the stroke amount of the piston 3 with the amount adjusted to the maximum.
The discharge amount variable amount V1 per step of the discharge amount adjustment is expressed by the following equation.
V1 = ((circumference ratio × D2 ^ 2 ÷ 4) − (circumference ratio × D1 ^ 2 ÷ 4)) × L1
The discharge amount V2 when the discharge amount is adjusted to the minimum is expressed by the following equation.
V2 = ((circumference ratio × D2 ^ 2/4) − (circumference ratio × D1 ^ 2 ÷ 4)) × L2
The discharge amount V3 when the discharge amount is adjusted to the maximum is expressed by the following equation.
V3 = ((circumference ratio × D2 ^ 2 ÷ 4) − (circumference ratio × D1 ^ 2 ÷ 4)) × L3
= ((Circumference x D2 ^ 2/4)-(circumference x D1 ^ 2/4)) x (L2 + L1 x 2)

Next, the structure of the pump will be described. FIG. 4 is a cross-sectional view of the state in which the plate 6 is not depressed. The upper diagram (G) shows a state where the discharge amount is adjusted to the minimum, and the lower diagram (H) shows a state where the discharge amount is adjusted to the maximum.

A piston 3 that has a sealing function and is slidable is incorporated in the inner diameter portion 2 a of the cylinder 2. The piston 3 is provided with a flow path hole 3e that connects the tank chamber 9 and the cylinder chamber 10, and the inner diameter portion 3b has a sealing function. A slidable piston rod 4 is fitted and engaged with the inner diameter portion 3 b of the piston 3. Here, the sliding resistance force between the piston 3 and the piston rod 4 is designed and manufactured to be smaller than the sliding resistance force between the piston 3 and the cylinder 2. The piston rod 4 has a stopper valve 4a that functions as a check valve for opening and closing the liquid flow path at the same time as the piston 3 is pushed up by the reaction force of the spring 7, and flow paths 4b and 4c connected from the cylinder chamber 10 to the discharge port 6a. Is provided. A disk valve 5 that functions as a check valve that opens and closes the flow path between the tank chamber 9 and the cylinder chamber 10 is fitted and engaged with the upper end of the piston rod 4 while the piston 3 is pushed down in the discharge process. A plate 6 having a discharge port 6 a is fitted and engaged with the lower end of the piston rod 4.

Next, the operation of the pump will be described. 4 shows a state in which the plate 6 is not pressed, FIG. 5 shows a state in which the plate 6 is pressed and the seat surface 5a of the disc valve 5 is in contact with the piston upper end surface 3a, and FIG. It is sectional drawing of the state which contacted the cylinder chamber lower end 2b, and discharge was completed, The upper figure (G), (J), and (M) of each figure are the states which are adjusting the discharge amount to the minimum, The lower figure (H) (K ) (N) represents a state in which the discharge amount is adjusted to the maximum.

4, when the plate 6 is not pressed down, the piston rod 4 is pushed up by the reaction force of the spring 7, and the stopper valve 4a pushes up the piston 3 so that the upper end surface 3a of the piston 3 is pressed against the lower end surface 1p of the main body 1. By being attached, the stopper 4a and the lower end surface 3d of the piston 3 are in contact with each other without any gap, and the cylinder chamber 10 and the flow paths 4b and 4c in the piston rod 4 are shut off to prevent liquid from leaking from the discharge port.

When the plate 6 is pressed, the sliding resistance force between the piston 3 and the piston rod 4 is smaller than the sliding resistance force between the piston 3 and the cylinder 2, so that the piston rod 4 does not move as shown in FIG. The inner diameter portion 3b of the piston 3 is slid to form a gap 10a between the lower end surface 3d of the piston 3 and the stopper valve 4a, and the flow path 4b provided in the piston rod 4 is opened. At the same time, the seat surface 5a of the disc valve 5 installed on the upper part of the piston rod 4 abuts against the upper end surface 3a of the piston 3 without any gap, shuts off the tank chamber 9 and the cylinder chamber 10 and prevents back flow of liquid.

When the plate 6 is further pressed down, the disk valve 5 pushes down the piston 3, and an amount of liquid equal to the volume of the piston stroke is discharged from the discharge port 6a through the flow paths 10a, 4b and 4c. As shown in FIG. 6, the piston 3 stops when it abuts on the lower end 2b of the cylinder chamber and completes the discharge of a predetermined amount of liquid. When the hand is released from the plate 6, the piston rod 4 is pushed up by the reaction force of the spring 7, and the stopper valve 4a first comes into contact with the lower end surface 3d of the piston 3 due to the difference in the sliding resistance force, leading to the discharge port 6a. At the same time as the flow path in 4 is blocked, a gap is formed between the seat surface 5 a of the disk valve 5 and the upper end surface 3 a of the piston 3. Next, the piston 3 is pushed up by the stopper valve 4 a, and the liquid in the tank chamber 9 flows into the cylinder chamber 10 through the flow path hole 3 e provided in the piston 3.

It is the top view and side view showing an example of a stationary type, and the left half of a side view is a sectional view. It is a side view showing the Example of a wall surface attachment type. It is a figure showing one Example of the discharge amount adjustment mechanism using the cam mechanism provided in the insertion part of a tank part and a cylinder part, (E) is a side view, (F) is BB sectional drawing. FIG. 4 is a cross-sectional view of the pump portion in a state where the lever is not depressed, wherein the upper diagram (G) shows a state where the discharge amount is adjusted to the minimum, and the lower diagram (H) shows a state where the discharge amount is adjusted to the maximum. The cross section of the pump part with the lever pressed down and the disc valve seat surface in contact with the piston. The upper figure (J) shows the discharge amount adjusted to the minimum, and the lower figure (K) shows the discharge amount adjusted to the maximum. Represents the state. The cross-sectional view of the pump part when the lever is pressed and the piston is at the bottom dead center (when the discharge is completed). (M) shows the minimum discharge amount adjustment, and (N) shows the maximum discharge amount adjustment. Yes. It is a side view of the conventional container with a liquid discharge pump.

Explanation of symbols

1 Body 2 Cylinder 3 Piston 4 Piston Rod 5 Disc Valve 6 Plate 7 Spring 8 Lid 9 Tank Chamber 10 Cylinder Chamber 11 Attachment for Wall Mounting

Claims (3)

  There is a lid that can be opened and closed at the top of the tank that stores the liquid, the bottom of the tank has a slope that descends toward the pump, and a pump that contains a check valve is installed at the bottom of the tank. A container with a liquid discharge pump, which discharges liquid inside a tank by pressing a plate installed at a tip of a piston rod extending downward.   Discharge of liquid by a single pumping operation by changing the stroke amount of the piston that moves up and down in the cylinder by expanding and contracting the insertion length of the cylinder inserted into the boss formed at the bottom of the tank bottom where liquid is stored The container with a liquid discharge pump according to claim 1, further comprising a pump whose amount can be adjusted in several steps. A piston having a flow path hole that communicates between the tank chamber and the cylinder chamber has a disk valve that contacts the piston upper end surface on the outer peripheral side of the flow path hole to open and close the flow path, and an inner peripheral side of the flow path hole. The liquid discharge pump according to claim 1, further comprising a check valve mechanism that opens and closes the flow path by sliding between a stopper valve that contacts the lower end surface of the piston and opens and closes the flow path. container.

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