JP2000185768A - Attaching and sealing structure of pump cylinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attaching and sealing structure of a pump cylinder wherein a pump can be detachably attached easily to a pour-out part for use without need of an accessory provided on a liquid storage bag in advance. SOLUTION: A pair of tongue-like pieces 60 are respectively provided along a heat seal 25 on a pour-out part 24 protruding from an upper end face of a refill container 10, and a first circular flange 33 is brought into contact with a tip of a pour-out opening 27 to place a cylinder 31 of a pump cylinder 28 on the pour-out opening 27. A sealing unit 50 is placed to cover around the placed cylinder 31, and a pair of outer shells 51 are integrally joined, whereby a packing is brought into tight contact with the cylinder 31 across a sheet member of the pour-out part 24 for attaching the pump cylinder 28 to the pour- out opening 27 of a liquid storage bag 11 in a sealed state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting seal for detachably and sealedly mounting a pump cylinder to a discharge opening of a liquid storage bag formed by heat-sealing peripheral portions of a plurality of sheet members. The present invention relates to a replacement container having a retaining structure and a mounting / sealing structure for accommodating a liquid storage bag body in a replaceable manner.

[0002]

2. Description of the Related Art In order to attach a pump to a discharge opening of a liquid storage bag formed by heat-sealing the periphery of a plurality of sheet members so that the contents can be taken out, a resin for mounting the pump is required. It is necessary to provide a liquid discharging device such as a liquid discharging device or the like in the discharging portion of the liquid storage bag body through heat sealing or the like, and a cap for sealing the liquid discharging device and the content liquid, and a shrink covering the same. Since a film or the like is required, the price is greatly increased as compared with a general liquid storage bag.

A cartridge type bottle in which a liquid storage bag is exchangeably housed in a container and a pump is detachably attached to an outlet of the liquid storage bag so that the contents can be taken out is disclosed in Japanese Patent Application Laid-Open No. 8-192873. However, according to such a container, there is nothing to position when the bag is put into the cylindrical container, and the mounting position of the fitting block is fixed, so that the position of the bag is not considered. If the bag is not put in the container, the bag may be twisted when the fitting block is fitted, and the sealing property may be lost.

[0004] The present invention provides a pump cylinder which can be used by easily attaching and detachably mounting a pump to a spout portion in a sealed state without requiring an accessory previously provided in a liquid storage bag. It is an object to provide a mounting and sealing structure.

Further, the present invention provides a replacement container which can easily position the liquid storage bag at the time of mounting the pump, and can exchangeably store the liquid storage bag without deteriorating the sealing performance. The purpose is to provide.

[0006]

According to the present invention, a sealing unit is used for a spout opening obtained by opening a spout portion of a liquid storage bag formed by heat-sealing peripheral portions of a plurality of sheet members. A mounting and sealing structure for detachably mounting the pump cylinder in a sealed state, wherein the cylinder portion of the pump cylinder projects in a direction opposite to the cylinder portion below the flange portion and the flange portion. A pair of tongue-like pieces having a substantially triangular cross-section, the sealing unit covers the cylinder portion, and comprises a pair of detachably integrated outer shells, and an inner surface of each outer shell,
A flange locking groove in which the flange portion is locked, and an elastic packing member having a pressing surface along the outer surface shape of the cylinder portion, wherein the pair of tongue-like pieces are arranged along the pouring opening, and The flange portion is brought into contact with the tip of the pouring opening, the cylinder portion of the pump cylinder is installed at the pouring opening, the sealing unit is provided around the installed cylinder portion, The pump shell mounting and sealing structure in which the outer packing member is joined and integrated to sandwich the sheet member of the spouting portion with the elastic packing member and mount the pump cylinder in the spouting opening in a sealed state. By doing so, the above object has been achieved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A replacement container 10 according to a preferred embodiment of the present invention is a container for accommodating a liquid storage bag body 11 as shown in FIG. It comprises a bottomed cylindrical outer container 12 and an upper lid 14 which is detachably attached so as to cover the upper end opening 13 of the outer container 12.

The liquid storage bag 11 is a self-supporting bag formed by laminating a plurality of sheet members formed by laminating a plastic film and heat sealing the periphery thereof. The shampoo or the like is hermetically sealed and accommodates an internal solution, and when the internal solution is accommodated, its cross-sectional shape becomes almost elliptical or rectangular except for the heat-sealed portion. In addition, according to the liquid storage bag 11, the central portion of the upper end protrudes as the pouring portion 24, and at the upper end portion of the pouring portion 24, a notch is provided in the uneven streaks and the sealing portion thereof. Then, by tearing and opening the upper end portion, the pouring opening 27 can be easily obtained by manual operation.

The outer container 12 is a cylindrical container having a substantially elliptical cross section so that the liquid storage bag 11 having a substantially elliptical cross section can be accommodated therein. Further, the upper end portion is formed to be slightly inwardly constricted so that the upper lid 14 can be easily attached.

As shown in FIGS. 1 and 2, the upper cover 14 has a substantially elliptical cross section similar to that of the outer container 12, and is formed by covering the upper surface of a cylindrical body 17 with a top end plate 18. Locking pieces 15 are provided on the outer peripheral surfaces at both ends in the major diameter direction at the lower end of the cylindrical body 17.
The upper cover 14 is removably fixed to the outer container 12 by locking the lock hole 57 of the lower cover with the projection 16 of the outer container 12. Also, the top end plate 18
An insertion port 19 is formed at substantially the center of the opening.

The insertion opening 19 comprises a central circular portion 21 and a pair of slit portions 22 extending along the major axis direction of the top end plate 18 in opposite directions from the central circular portion 21.
Each of the slits 22 has a locking projection 23 projecting from the inner surface thereof. The locking projection 23 is provided with the liquid storage bag 1.
Pre-formed locking holes 26 are locked in the respective heat sealing portions 25 on both sides of the first discharging portion 24, and the liquid storage bag 11 is inserted from the back side of the upper lid 14 into the insertion port 19. The liquid storage bag 11 is positioned in a state where the liquid storage bag 11 is suspended from the upper lid 14 while projecting the portion 24 to the front side.

A pair of slide guides, each having a T-shaped cross section, are provided on the surface of the top end plate 18 of the upper lid 14 and are arranged to face the insertion opening 19 along the minor diameter direction of the top end plate 18. A member 29 is provided.

The upper lid 14 to which the liquid storage bag 11 is locked.
Is placed in the outer container 12 and the lock piece 15 of the upper lid 14 is locked, and the liquid storage bag 11 is positioned in a state where the pouring section 24 is positioned and projected on the surface side of the upper lid 14, and the replacement container 10 is Is housed interchangeably within.

If the upper end of the spout 24 of the liquid storage bag 11 protruding from the surface of the upper lid 14 is cut off and opened, a spout opening 27 is formed (see FIG. 2). On the other hand, the pump cylinder 28 is inserted and mounted.

The liquid storage bag 11 is accommodated in the bag 1
1 is put in the outer container 12, the upper end of the spout 24 of the bag 11 is opened to form a spout opening 27, and then the spout 24 of the bag 11 is inserted into the insertion port 19 of the upper lid 14. The upper cover 14 is fitted into the outer container 12 while passing through from the back side, and then the locking holes 26 of the liquid storage bag body 11 are locked by the locking projections 23 in the slit portions 22 of the upper cover 14 to accommodate You can also do work.

As shown in FIG. 3, the pump cylinder 28 includes a pump section 30, a cylinder section 31, and a pipe section 32.
The cylinder portion 31 is provided with a disc-shaped first circular flange portion 33 having an enlarged diameter.
When 8 is inserted into the pouring opening 27, the lower surface of the first circular flange portion 33 abuts against the tip of the pouring opening 27, and the pump cylinder 28 is positioned.

Below the first circular flange portion 33, a pair of tongue-like pieces 60 each having a substantially triangular cross section are formed integrally so as to protrude in opposite directions (see FIG. 5). The outer peripheral surface below the first circular flange portion 33 is arranged along the inner surface shape of the pouring opening 27 joined by the heat seal portion 25.

On the other hand, above the first circular flange portion 33, a second circular flange portion disposed on the upper end surface of a sealing unit 50 to be described later is spaced apart from the first circular flange portion 33. 34, and a substantially octagonal cross section (FIG. 3B) immediately below the second circular flange portion 34.
(See FIG. 3) is integrally connected.

A pair of tongue-shaped pieces 60 of the cylinder portion 31 are respectively aligned with the heat seal portion 25 at the pouring opening 27,
Further, the lower surface of the first circular flange portion 33 is brought into contact with the tip of the ejection opening 27, and the cylinder portion 31 of the pump cylinder 28 is inserted into the ejection opening 27 while the pipe portion 32 is inserted into the liquid storage bag body 11. The sealing unit 50 is installed so as to cover the periphery of the cylinder unit 31.

The sealing unit 50 is constituted by a pair of outer shells 51. As shown in FIG. 4, the outer shell body 51 is formed by dividing an elliptical cylindrical body whose upper end surface is covered with a plate member 38 having a locking opening 36 having a substantially octagonal cross section in half along its major axis direction. Formed. Each of the outer shells 51 includes upper and lower two-stage ribs 40 and 41 having an inner surface shape along the outer surface shape of the cylinder portion 31 from which the tongue-shaped piece 60 projects, and the upper rib 40 and the plate member are provided. 38, the first
A locking groove 42 into which the circular flange portion 33 is fitted is formed. On the other hand, a rubber packing 43 is fitted so as to be sandwiched between the upper and lower ribs 40 and 41. The packing 43 has an inner surface shape that conforms to the outer surface shape of the cylinder portion 31 from which the tongue-shaped piece 60 projects, and the inner surface protrudes inward from the inner surfaces of the ribs 40 and 41 to press the cylinder portion 31. The pressing surface to be formed is formed.

Each of the outer shells 51 has, at its lower end,
A slide groove member 44 having a T-shaped cross section is provided extending along the minor diameter direction.

Further, at both ends of the outer peripheral surface of each of the outer shells 51, either a lock piece 45 or an engaging projection 46 which is hinged and rotatable and constitutes a lock mechanism is provided. (See FIG. 5) By such a lock mechanism, the pair of outer shells 51 constituting the sealing unit 50 are joined and integrated so as to be disassembled.

According to the sealing unit 50 having the above-described structure, each outer shell is formed so as to cover the periphery of the cylinder portion 31 of the pump cylinder 28 provided at the pouring opening 27 of the pouring portion 24 protruding from the upper lid 14. The body 51 is arranged close to the slide guide member 29 while engaging the slide groove member 44 with the slide guide member 29 (see FIG. 5A), and is joined and integrated via a lock mechanism (see FIG. 5B). ). As a result, the packing 43 is brought into close contact with the cylinder portion 31 while pressing the sheet member of the pouring opening 27 therebetween,
The pump cylinder 28 can be easily attached to the discharge opening 27 in a sealed state. Also, the pump cylinder 28
By inserting the first circular flange portion 33 into the locking groove 42, the pump cylinder 28 does not fall out of the replacement container 10 even when the pump portion 30 is lifted. Furthermore, the locking flange portion 35 having a substantially octagonal cross section is fitted and locked with the locking opening 36 having a substantially octagonal cross section, thereby positioning the pump cylinder 28 and rotating the pump cylinder 28 during use. Is blocked.

The liquid storage bag 11 after the use of the internal solution can be easily removed from the replacement container 10 in the reverse procedure, and a new liquid storage bag 1 can be used.
The liquid storage bag 11 can be exchanged and used by replacing the liquid storage bag 11.

According to the replacement container 10 of the present embodiment, since the above-described mounting and sealing structure is employed, it is possible to eliminate the need for an accessory provided in the liquid storage bag 11 in advance. Opening 27 of liquid storage bag 11
The pump cylinder 28 can be easily and detachably attached in a sealed state for use.

Further, according to the replacement container 10 of the present embodiment, the positioning of the liquid storage bag 11 when the pump cylinder 28 is mounted can be easily performed, and the liquid storage bag 11 can be mounted without impairing the sealing performance. Can be accommodated interchangeably.

Note that the present invention is not limited to the above embodiment. For example, the mounting and sealing structure of the present invention does not necessarily need to be configured via the replacement container 10, An opening 27 formed by opening the opening 24
Then, the cylinder unit 31 of the pump cylinder 28 can be directly inserted, and the sealing unit 50 can be attached to bring the sealed state. Further, the pair of outer shells 51 constituting the sealing unit 50 does not always need to be guided and integrated through the slide guide member 29 and the slide groove member 44. Further, the lock mechanism of the pair of outer shells 51 may be configured such that one side is hingedly mounted on the upper lid so as to be openable and closable, and the lock mechanism is mounted on the opposite side.

[0028]

According to the mounting and sealing structure of the present invention, the pump can be easily and detachably attached to the spouting portion in a sealed state without the need for an accessory previously provided in the liquid storage bag. Can be used. Further, according to the replacement container of the present invention, the positioning of the liquid storage bag at the time of mounting the pump can be easily performed, and the liquid storage bag can be exchangeably stored without impairing the sealing property.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a replacement container according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating an upper lid constituting a replacement container.

FIGS. 3A and 3B are side views illustrating a configuration of a pump cylinder, and FIG. 3B is a cross-sectional view taken along line AA of FIG.

FIG. 4 is a perspective view illustrating an outer shell constituting the sealing unit.

FIGS. 5 (a) and (b) are explanatory views showing a situation in which a pair of outer shells are joined and integrated, and a pump cylinder is attached to an ejection opening in a sealed state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Replacement container 11 Liquid storage bag body 12 Outer container 13 Upper end opening part 14 Upper lid 19 Insertion port 22 Slit part 23 Locking projection 24 Discharge part 25 Heat seal part 26 Lock hole 27 Discharge opening 28 Pump cylinder 29 Slide guide member Reference Signs List 30 pump part 31 cylinder part 32 pipe part 33 first circular flange part 34 second circular flange part 40, 41 rib 42 locking groove 43 packing 44 slide groove member 50 sealing unit 51 outer shell 60 tongue piece

Claims (3)

[Claims] 1. A pump cylinder is detachably attached to a discharge opening obtained by opening a discharge portion of a liquid storage bag body obtained by heat-sealing peripheral portions of a plurality of sheet members using a sealing unit. A mounting and sealing structure for mounting in a sealed state, wherein a cylinder portion of the pump cylinder has a flange portion, and a pair of tongues having a substantially triangular cross section projecting in opposite directions from the cylinder portion below the flange portion. The sealing unit comprises a pair of outer shells that cover and removably integrate the cylinder part, and the flange part is locked to the inner surface of each outer shell. An elastic packing member having a flange locking groove and a pressing surface along the outer surface shape of the cylinder portion, wherein the pair of tongue-shaped pieces is aligned with the pouring opening, and the flange portion is connected to the pouring opening. of The cylinder unit of the pump cylinder is set in the pouring opening in contact with the tip, and the sealing unit is disposed around the installed cylinder unit, and the pair of outer shells are joined and integrated. Thereby, the sheet member of the spout is sandwiched by the elastic packing member,
A mounting and sealing structure for the pump cylinder, wherein the pump cylinder is mounted on the pouring opening in a sealed state. 2. The liquid storage bag body is exchangeably housed,
A replacement container for sealingly attaching a pump cylinder to the pouring opening by the mounting and sealing structure, comprising: an outer container having an upper end opening; and an upper lid having an insertion port of the pump cylinder mounted on the upper end opening. The upper lid includes a pair of slits extending in opposite directions from the insertion opening, and a locking projection projects from the slit, and the locking projection projects heat at a discharge portion of the liquid storage bag body. A locking hole formed in advance in the seal portion is locked, and the liquid storage bag is positioned in such a manner that the ejection portion of the liquid storage bag inserted through the back surface of the upper lid is protruded to the front surface side. A cylinder part of the pump cylinder is installed in the spout opening obtained by opening the spout part of the body, and the sealing unit is arranged so as to cover the periphery of the cylinder part, and the pair of outer parts is provided. Join the shell In this manner, the pump cylinder is attached to the spout opening in a sealed state, and the upper lid in which the liquid storage bag is positioned is attached to the upper end opening, and the liquid storage bag is placed in the outer container. Replacement container to be stored in. 3. The upper lid includes a pair of slide guide members disposed on the surface thereof, the slide guide members being opposed to each other and extending toward the insertion port, and the pair of outer shells forming the sealing unit are provided. A groove for engaging a slide guide member at a lower end portion thereof, wherein the groove is engaged with the slide guide member, and the groove is guided to a position covering the periphery of the cylinder portion to be joined and integrated. 3. The replacement container according to 2.