JPH0642756U - Pump type liquid dispensing container - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Completely eliminates air that may be mixed in the contents in a liquid dispensing container in which the floating piston rises as the contents decrease. Improve work productivity. An opening / closing means 60 capable of communicating with the atmosphere is provided at the bottom of the floating piston 50, and after the contents are filled, the floating piston 50 is inserted into a container and at the same time, is present between the contents and the floating piston 50. The air is completely discharged by operating the opening / closing means 60.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid dispensing container to which the principle of a pump is applied, and more specifically, to an improvement of a viscous liquid dispensing container in which the bottom of a floating piston rises as the content decreases.

[0002]

[Prior art and problems]

 A floating piston is placed at the bottom of the container, filled with viscous substances and other contents without leaving gas inside, and the floating piston rises as the contents decrease, preventing pumping of air. Conventionally, containers have been widely used in various fields. For this type of container, the filling and assembling method is generally adopted in which the floating piston is first inserted into the bottom of the container to fill the contents, and then the container lid with the pump-type discharge mechanism is attached to the container body. Came.

However, in the above-mentioned assembly method, in order to attach the container lid body without air remaining on the upper surface of the content, the container lid body is filled with more than necessary contents when filling the contents. At the time of fitting, procedures such as operating the pump-type discharge mechanism to discharge excess contents were required, and the assembly work was troublesome and uneconomical. To avoid this inconvenience, a container lid with a built-in pump-type discharge mechanism was attached to the container with the bottom lid not fitted, and then the contents were filled with the container inverted and the floating piston was inserted. Later, an assembling method of fitting the bottom lid is being performed.

In this assembly method, when the floating piston is inserted into the container, it is difficult to insert the floating piston unless the air existing between the surface of the contents and the floating piston is removed. The loose piston is fitted and the hole is closed with a rubber stopper after fitting.

[0005]

According to the present invention, when a floating piston is inserted into a container, the floating piston having a function of discharging air existing between the upper surface of the contents and the floating piston is used at the same time. That is, it is composed of a cylindrical container, a pump-type discharge mechanism, a container lid body that incorporates the mechanism and is fixed to the container, an outer container lid, and a floating piston. In the liquid dispensing container, the above problem is solved by a liquid dispensing container characterized by having an opening / closing means capable of communicating with the atmosphere at the bottom of the floating piston.

In the liquid dispensing device according to the present invention, when the floating piston is inserted into the container filled with the contents, the opening / closing mechanism is opened by pushing down the opening / closing means located at the center of the bottom of the floating piston. The air existing between the liquid upper surface inside the container and the inserted floating piston is discharged to the outside of the floating piston, and the floating piston is smoothly and easily accommodated in the container. When the discharge of air is completed, the opening / closing means is automatically closed by its elastic recovery force.

The present invention relates to the improvement of the floating piston, and various known materials and structures are used for the cylindrical container body, the container lid of the pump type discharge mechanism, the container outer lid and the bottom lid. It goes without saying that any of the above can be used.

[0008]

[Specific disclosure of device]

 An embodiment of the present invention will be specifically described below with reference to the drawings. The liquid dispensing container according to the present invention shown in FIG. 1 includes a tubular container 10, a pump-type discharge mechanism 30, a container lid 20 which is attached to the container by accommodating the structure, an outer container lid 15, The container according to the present invention is characterized by a floating piston 50, an opening / closing means 60 for the floating piston, and a bottom lid 40 that is finally fitted to the cylindrical container 10.

In the present invention, after the container lid 20 having the pump-type discharge mechanism 30 incorporated therein is attached to the cylindrical container 10 in which the bottom lid 40 is not fitted, the liquid is placed in the container held in an inverted state. The contents are filled.

As described above, the tubular container 10, the pump-type discharging mechanism 30, the container lid 20, and the container outer lid 15 according to the present invention are all made of known materials, structures, and assembling methods that have been conventionally used. However, they are optional and will not be described in detail. The use of these parts with new materials or structures is also applicable to the invention without departing from the scope of the invention.

Next, the floating piston 50 and the opening / closing means 60 will be described in detail. The floating piston 50 shown in FIG. 2 is generally made of a highly flexible synthetic resin material, and its outer diameter dimension and the airtight structure of the outer portion that slides inside the tubular container 20 are those of the conventional technique. Therefore, no detailed explanation is needed. In this embodiment, a recess 51 for receiving the outer cylinder 31 of the pump type discharge mechanism 30 when the floating piston 50 is raised is provided on the surface of the floating piston 50. A cylindrical portion 53 opening downward is integrally formed with the body of the piston 50 at the center of the bottom of the recess 51, a partition 54 is provided at the center of the inner wall of the cylinder 53, and a partition 54 is provided at the center of the partition 54. Preferably, a taper hole 55 having a diameter reduced downward is provided. A plurality of slits 56 are preferably provided below the partition wall 54 of the cylindrical portion 53 in order to increase the flexibility of the cylindrical portion 53. Furthermore, a cylindrical skirt 52 is provided around the cylindrical portion 53, and when the floating piston 50 is located at the bottom of the container 20, the bottom of the skirt 52 contacts the bottom surface of the bottom lid 40. The cylindrical portion 53 is protected.

In the opening / closing means 60 shown in FIG. 3, a stepped rod-shaped portion 61 and a cylindrical portion 62 surrounding the stepped-rod portion 61 are made of a synthetic resin integrally molded with a bottom plate 63, and a leakage liquid storage 64 is formed. There is. The stepped rod-shaped portion 61 has a taper portion 65 that gradually expands in diameter downward from the upper surface thereof, a tapered portion 67 that reduces the diameter, an arc portion 66 that connects both tapered portions, and a tapered portion that reduces the diameter. It has an enlarged diameter taper portion 68 connected to 67 and a base taper portion 69 that enlarges the diameter, and is formed integrally with the bottom plate 63. The tapered taper portion 67 has the same taper as the taper hole 55 in the floating piston 50, and the outer diameter of the arc portion 66 is set larger than the maximum diameter of the taper hole 55.

By pushing the floating piston opening / closing means 60 into the tapered small hole portion 55 of the floating piston 50 by utilizing its elasticity, the reduced diameter tapered portion 67 is engaged with the tapered portion of the small hole portion 55. To meet. In this state, the partition wall 54 presses the base taper portion 69 of the stepped rod-shaped portion of the opening / closing means, so that the opening / closing means 60 is locked by the floating piston 50, so that the opening / closing portion can be kept airtight. There is. FIG. 4 shows a state in which the opening / closing means 60 is attached to the floating piston 50. The left half of the figure shows a state in which the opening / closing mechanism is closed, and the right half of the figure shows the opening / closing means 60. It is pushed up and the open / close mechanism is opened.

When inserting the floating piston 50 to which the opening / closing means 60 is attached into the cylindrical container 20, the opening means 60 is pushed down (the floating piston 50 is inserted into the inverted container 20 from above). Since it is inserted, the opening means 60 will be pushed down), and the air existing between the upper surface of the liquid inside the container and the floating piston 50 to be inserted, the taper of the small hole 55 of the floating piston and the opening / closing means 60. It is discharged into the open atmosphere through an annular gap formed between the reduced-diameter taper portion 68. In this state, by inserting the floating piston 50 to the predetermined position, the air in the container is completely discharged. When the air is completely discharged, the opening / closing means 60 is automatically returned to the closed position by the elastic recovery force of itself and the partition wall.

After the floating piston 50 is fitted in the container 10 containing the contents without leaving the space, the bottom lid 40 is fitted in the container 10 and the outer container 15 is detachably mounted. This completes the assembly work. In the present invention, the bottom lid 40 also uses a well-known structure that can be fitted into the cylindrical container 10, and the structure and other detailed description are not necessary. Preferably, the side surface of the bottom lid 40 is exposed to the outside air, which prevents the pressure drop of an increasing space layer between the bottom lid 40 and the floating piston due to the rise of the floating piston 50 between the bottom lid 40 and the fitting portion of the container. The one with the through hole is used.

[0016]

[Effect of device]

 According to the present invention, a bottomless container having a container lid with a pump-type discharge mechanism attached is filled with the contents in an inverted state of the container, and after the floating piston is inserted, the bottom lid is fitted. In the liquid dispensing container that adopts the assembly method described above, when the floating piston is inserted into the container, the air existing between the surface of the contents and the floating piston can be easily and quickly discharged into the atmosphere. It enables rationalization of assembly work and labor saving.

[Brief description of drawings]

FIG. 1 is an assembled sectional view of an embodiment of a liquid dispensing container according to the present invention.

FIG. 2 is a sectional view of the floating piston of the embodiment shown in FIG.

FIG. 3 is a sectional view showing a floating piston opening / closing means of the embodiment shown in FIG.

FIG. 4 is a sectional view showing a combination of a floating piston and its opening / closing means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cylindrical container 15 Container outer lid 20 Container lid 30 Pump type discharge mechanism 40 Container bottom lid 50 Floating piston 53 Cylindrical part 54 Partition wall 55 Reduced diameter taper hole 60 Floating piston opening / closing means 67 Reduced diameter tapered part

Claims (1)

[Scope of utility model registration request] 1. A tubular container, a pump-type discharge mechanism, a container lid body which incorporates the mechanism and is fixed to the container, and a container outer lid.
A liquid dispensing container comprising a floating piston, wherein the bottom of the floating piston has an opening / closing means capable of communicating with the atmosphere.