Dispensing container

Abstract

To provide a dispensing container allowed to prevent a suction pipe connected to a pump from falling out when refilling a content.SOLUTION: A dispensing container comprises a container body A that accommodates a highly viscous content α, a pump B that is mounted on the container body A, a suction pipe C that is fitted to the pump B and extends down into the container body A, and a press-plate member D that is rested on a liquid level of the content α within the container body A and descends along an outer periphery of the suction pipe C with lowering of the liquid level. The press-plate member D is provided with a displacement piece 24 that, when the pump B is pulled up from the container body A after reached a lower end of the container body A, deforms downward to thereby take air under a lower surface of the press-plate member D.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a dispensing container that stores a highly viscous content in a container body and dispenses the content by a pump attached to the container body. [Background technology]

[0002] Conventionally, a dispensing container has been used in which contents such as cosmetics or medicines are stored in a container body, and the contents are sucked up through a suction pipe connected to the pump cylinder by moving the push-down head of a pump attached to the container body up and down, and then dispensed from a nozzle on the push-down head.

[0003] In this type of dispensing container, if the contents contained in the container body are highly viscous, voids may form in the contents inside the container body when the contents are dispensed, and repeated dispensing may cause the contents to become unable to be dispensed.Therefore, a dispensing container is known that is equipped with a pressure plate member that is placed on the liquid surface of the contents and descends as the contents decrease (see, for example, Patent Document 1).

[0004] The discharge container described in Patent Document 1 above has a problem in that when the contents decrease and the pressure plate member reaches the lower end of the container body, it sticks to the bottom, and when the pump is removed from the container body to refill the contents, the suction pipe connected to the pump may fall off. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Microfilm of Utility Model Publication No. 57-183283 Summary of the Invention [Problem to be solved by the invention]

[0006] SUMMARY OF THE INVENTION The present invention aims to solve the above problem and to provide a dispensing container that can prevent the suction pipe connected to the pump from falling off when the contents are refilled. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the present invention provides a discharge container comprising a container body for containing highly viscous contents, a pump attached to the container body, a suction pipe fitted to the pump and hanging down into the container body, and a pressure plate member placed on the liquid level of the contents inside the container body and descending along the outer periphery of the suction pipe as the liquid level drops, wherein the pressure plate member has a displacement piece that deforms downward when the pump is pulled up from the container body after reaching the lower end of the container body, thereby drawing air into the underside of the pressure plate member.

[0008] In one embodiment of the discharge container, the pressure plate member comprises a guide tube portion that can move up and down along the outer periphery of the suction pipe, and a plate portion that extends radially from the guide tube portion to the inner periphery of the body of the container body, and the plate portion is characterized in that the guide tube portion side is separated by a slit portion and the plate portion is characterized in that it comprises a displacement piece to which the body portion side is connected, and further in that a plurality of displacement pieces are formed along the outer periphery of the guide tube portion. [Effects of the Invention]

[0009] By adopting the above-described configuration, the discharge container of the present invention has such a feature that when the remaining amount of contents decreases and the pressure plate member reaches the lower end of the container body, and then the pump is pulled up from the container body to refill the contents, the displacement piece provided on the pressure plate member deforms, causing air to be drawn into the underside of the pressure plate member, reducing the adhesive strength of the pressure plate member, and allowing the pump to be removed from the container body without affecting the fit between the pump and the suction pipe. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a partial half cross-sectional side view showing a state before use of a discharge container according to an embodiment of the present invention. [Figure 2] 1A and 1B are diagrams showing a suction pipe and a presser plate member of a discharge container according to an embodiment of the present invention, in which (a) is a top view and (b) is a side half cross-sectional view. [Figure 3] 1A and 1B are diagrams showing the state of a discharge container according to an embodiment of the present invention after use, in which (a) is a half-sectional side view of the pressure plate member when it has reached the lowest end, and (b) is a half-sectional side view of the pressure plate member when the displacement piece is deformed when the container lid is opened. DETAILED DESCRIPTION OF THE INVENTION

[0011] Next, the discharge container of the present invention will be described with reference to the drawings showing an embodiment. In the following description, the upward direction in FIG. 1 is referred to as "upper", the downward direction as "lower", the vertical direction as "axial direction", and the left-right direction as "radial direction".

[0012] (Example) In Figure 1, A is a container that contains a highly viscous content α, B is a pump attached to the top of container A, C is a suction pipe that is fitted to pump B and hangs down into container A, and D is a pressure plate member that is placed on the liquid surface of content α in container A and descends along the outer periphery of suction pipe C as the liquid level drops.

[0013] As shown in Figure 1, the container body A is composed of a container body A1 having a cylindrical mouth portion 1 formed at the top, a body portion 2 hanging down from the lower end of the mouth portion 1 and whose inner surface has the same diameter as the mouth portion 1, and a disk-shaped bottom portion 3 closing the lower end of the body portion 2, and a container lid A2 having a peripheral wall portion 5 screwed onto the outer periphery of the mouth portion 1, a ring-shaped shoulder portion 6 extending inward from the upper end of the peripheral wall portion 5, and a neck portion 7 hanging down from the inner edge of the shoulder portion 6. In order to screw the container lid A2 onto the container body A1, the container body A1 has a male thread portion 4 screwed onto the outer surface of the nozzle portion 1, and the container lid A2 has a female thread portion 8 screwed onto the inner surface of the peripheral wall portion 5.

[0014] Pump B comprises a cylinder 11 hanging down from the top of container body A by means of an attachment cap 10 that screws onto the outer periphery of the neck 7 of the container lid A2, a push-down head 12 attached to the upper end of a stem (not shown) that hangs down from within cylinder 11, and an actuating member (not shown) that is attached so as to be able to move up and down while being biased upward.By moving the push-down head 12 at the upper end up and down, the contents α in container body A1 are sucked up through a suction pipe C fitted to the outer periphery of cylinder 11 and discharged from a nozzle 13 provided on push-down head 12, and has a known pump mechanism.

[0015] As shown in FIGS. 1 and 2, the suction pipe C is composed of a rigid pipe portion 14 that extends axially from the outer periphery of the cylinder 11 of the pump B to the vicinity of the bottom 3 of the container body A1. The pipe portion 14 is divided into an upper inner periphery 14a and a lower inner periphery 14b by a ring-shaped locking protrusion 15 provided around the inner periphery, and the upper inner periphery 14a is fitted onto the outer periphery of the cylinder 11, while the lower inner periphery 14b gradually expands in diameter from the locking protrusion 15 toward the suction port 16 at the lower end.

[0016] The upper inner periphery 14a has a plurality of axially extending mating ribs 17 (four in this embodiment) protruding from the upper part of the locking protrusion 15 to fit into the reduced diameter part at the bottom of the cylinder 11. The mating ribs 17 may also be provided on the cylinder 11 side. The tubular portion 14 has a guide surface 18 formed on its outer periphery with a constant outer diameter from the upper end to the lower end, which guides the pressure plate member D so that it can move up and down, and a stopper protrusion 19 protruding radially from the lower end of the guide surface 18.

[0017] The pressure plate member D is formed of an elastic material such as synthetic resin (e.g., elastomer, silicone rubber, gasket, etc.), and is provided with a guide tube portion 20 whose inner surface is guided so as to be movable up and down along the guide peripheral surface 18 of the suction pipe C, and a ring-shaped plate portion 21 extending radially outward from the lower outer periphery of the guide tube portion 20 and close to the inner periphery of the barrel portion 2 of the container main body A1. The guide tube portion 20 has a stop step portion 22 at the lower inner circumferential end that abuts against the retaining protrusion 19 of the suction pipe C when the presser plate member D reaches the lower end of the container body A1.

[0018] The plate portion 21 has multiple displacement pieces 24 (in this embodiment, three evenly spaced apart) arranged around the guide tube portion 20, each of which is separated from the other parts of the plate portion 21 by a slit portion 23 cut from the top surface to the bottom surface in a V-shaped cross section. The slit portion 23 is formed so that the lower ends of the V-shaped cross section are as close as possible to each other, so that the contents α do not leak out from the slit portion 23 to the upper surface of the plate portion 21.

[0019] The displacement piece 24 is connected to the plate portion 21 on the outer periphery side of the plate portion 21 by a connection portion 25 where one end 23a and the other end 23b of the slit portion 23 are separated, and the displacement piece 24 has an approximately quadrilateral shape with the inner periphery side cut out in an arc shape by the arc portion 23c of the slit portion 23 formed along the guide tube portion 20. In this embodiment, the displacement pieces 24 are approximately quadrilateral in shape with an arc-shaped cutout on the inner periphery, and are arranged in three locations, but as long as there are connection portions 25 on the outer periphery of the plate portion 21, the shape and number can be selected appropriately as needed.

[0020] Next, the manner of use and the effects of this embodiment will be described. In the discharge container of this embodiment, first, the container body A1 and the container lid A2 are molded separately, and then the pump B is attached to the neck portion 7 of the container lid A2 by means of the mounting cap 10.

[0021] In parallel with the attachment of the pump B to the container lid A2, the pressure plate member D is attached to the suction pipe C by inserting the guide tube portion 20 of the pressure plate member D from the upper end of the tube portion 14 of the suction pipe C toward the lower end where the anti-slip protrusion 19 protrudes. Then, the upper inner circumference 14a of the suction pipe C is pushed into the cylinder 11 of the pump B from below, and inserted until the lower end of the cylinder 11 abuts the locking protrusion 15.Then, the reduced diameter portion of the lower part of the cylinder 11 is fitted into the upper inner circumference 14a of the suction pipe C by the fitting rib 17, and the setting of the pump B to the container lid A2 is completed.

[0022] After filling the container body A1 with highly viscous contents α, the suction port 16 of the suction pipe C set in the container lid A2 from above the nozzle portion 1 is gradually inserted into the contents α, and the plate portion 21 of the pressure plate member D comes into contact with the liquid surface of the contents α, causing the pressure plate member D to begin rising along the guide surface 18 of the suction pipe C.

[0023] Thereafter, when the female threaded portion 8 of the peripheral wall portion 5 of the container lid A2 reaches a position where it can be screwed into the male threaded portion 4 of the nozzle portion 1 of the container body A1, the container lid A2 is rotated in the closing direction relative to the container body A1 to seal the container body A, and the container is completed as a discharge container with the pressure plate member D placed on the liquid surface of the contents α, as shown in Figure 1.

[0024] When using the contents α contained in the container body A, the push-down head 12 of the pump B is moved up and down from the state shown in Figure 1, and the contents α in the container body A1 are sucked up through the suction port 16 of the suction pipe C fitted into the cylinder 11, and then discharged to the outside through the nozzle 13 provided on the push-down head 12. When the content α in the container body A is discharged by the pump B, the presser plate member D descends along the guide peripheral surface 18 of the suction pipe C in accordance with the decrease in the content α.

[0025] As shown in Figure 3(a), as the contents α in the container body A are used, the remaining amount of contents α decreases, and when the pressure plate member D reaches the lower end (bottom 3) of the container body A1, the pressure plate member D comes into a tight contact with the lower end of the container body A1, sandwiching the film-like contents α between the plate portion 21 and the lower end of the container body A1. In this state, in order to refill the contents α, it is necessary to pull up and remove the pump B, to which the suction pipe C and the pressing plate member D are attached, from the container body A.

[0026] To remove pump B from container body A, first rotate container lid A2 in the opening direction relative to container body A1, and the female threaded portion 8 of container lid A2 will unscrew from the male threaded portion 4 of container body A1, causing container lid A2 to begin rising together with pump B and suction pipe C.

[0027] As the suction pipe C rises, the stop step 22 of the pressure plate member D, which is engaged with the anti-slip protrusion 19, rises, and the space formed between the underside of the pressure plate member D and the bottom 3 of the container body A1 becomes negative pressure.As shown in Figure 3(b), the plate portion 21 of the pressure plate member D is sucked downward, particularly on the inner side, and the locally deformable displacement piece 24 deforms downward on the arc portion 23c side, with the connection portion 25 on the outer side as a fulcrum, so that air is taken in between the bottom 3 of the container body A1 and the plate portion 21 of the pressure plate member D.This reduces the adhesion strength between the bottom 3 of the container body A1 and the pressure plate member D, and the adhesion state can be eliminated.

[0028] As described above, although the discharge container of this embodiment is provided with a pressure plate member D that is placed on the liquid surface of the contents α in the container body A, when refilling the contents α, the pump B can be removed from the container body A without affecting the engagement between the cylinder 11 of the pump B and the suction pipe C. [Industrial Applicability]

[0029] In the discharge container of the present invention, when the remaining amount of contents decreases and the pressure plate member reaches the lower end of the container body, and the pump is pulled up from the container body to refill the contents, the displacement piece provided on the pressure plate member deforms, causing air to be drawn into the underside of the pressure plate member, reducing the adhesive strength of the pressure plate member, and the pump can be removed from the container body without affecting the fit between the pump and the suction pipe, and the discharge container is particularly suitable as a discharge container for storing highly viscous contents such as cosmetics. [Explanation of symbols]

[0030] A Container body A1 Container body A2 container lid B Pump C. Suction pipe D Retaining plate member α Contents 1 Mouth barrel 2. Torso 3 bottom 4 Male thread 5 Peripheral wall 6 Shoulder 7 Neck 8 Female thread 10 Mounting cap 11 cylinders 12 Press-down head 13 nozzles 14 Pipe section 14a Upper inner circumference 14b Lower inner circumference 15 Locking protrusion 16 Intake port 17 Mating rib 18 Guide surface 19. Retaining rib 20 Guide tube 21 Board part 22 Stop step 23 Slit section 23a One end 23b Other end 23c Arc section 24 Displacement piece 25 Connection

Claims

1. A dispensing container comprising: a container body for containing highly viscous contents; a pump attached to the container body; a suction pipe fitted to the pump and hanging down into the container body; and a presser plate member placed on the liquid surface of the contents in the container body and descending along the outer periphery of the suction pipe as the liquid level drops, A discharge container characterized in that the pressure plate member has a displacement piece that deforms downward when the pump is lifted up from the container body after reaching the lower end of the container body, thereby drawing air into the underside of the pressure plate member.

2. the presser plate member includes a guide tube portion that is movable up and down along the outer periphery of the suction pipe, and a plate portion that extends radially from the guide tube portion to the inner periphery of the body of the container body; 2. The discharge container according to claim 1, wherein the plate portion is separated on the guide tube side by a slit portion and includes a displacement piece connected on the body side.

3. 3. The discharge container according to claim 1, wherein a plurality of the displacement pieces are formed along the outer periphery of the guide tube portion.

Images