JP2013094407A - Ejection container with filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel ejection container with a filter, capable of smoothly ejecting a liquid, effectively draining the liquid, and easily separating an inner layer body from an outer layer body.SOLUTION: The ejection container includes: a double-structured container body 2 in which outside air is introduced into space between the outer layer body 2a and the inner layer body 2b through an outside air inlet A2 formed in a mouth of the outer layer body 2a; and an ejection cap 3 having a check valve 5 to be opened only by the content in the container force-fed out of a mouth of the container body 2 for discharging the content from the check valve 5 through an outlet A4. A filter 10 is disposed on the upstream side of the outlet A4. The inner layer body 2b is filled with an eye lotion, etc. as the content. The outer layer body 2a has flexibility to be deformed and restored. By repetition of pressing and releasing the pressure of the outer layer body 2a, the eye lotion, etc. loaded in the inner layer body 2b can be force-fed through the mouth.

Description

  The present invention relates to a dispensing container with a filter in which a dispensing cap is attached to a double-structured container body composed of an inner layer body and an outer layer body, and the contents of the container body are poured out through the dispensing cap.

  In a conventional dispensing container with a filter, a delamination bottle as a container body, and an inner plug (sealing) formed with an opening (valve hole) that seals the inside of the mouth of the delamination bottle and communicates with the mouth. Stop valve), a check valve that opens the opening by the contents pumped through the opening of the inner plug, and a spout (not shown) that forms a storage space for the check valve together with the inner plug and communicates with the storage space. An ophthalmic container having a discharge stopper (plug body) formed with a flow path in the nozzle and having a filter disposed adjacent to the upstream side of the discharge stopper (upstream with respect to the direction of discharging the contents). Yes (see, for example, Patent Document 1).

Japanese Patent No. 4580524

  However, in such a conventional container with a filter, since the content is poured out through the filter, a large load (resistance) is generated when the content is poured out. For this reason, when a user tries to pour out contents, it may not be poured out smoothly.

  In addition, the above-described conventional container with a filter merely opens and closes the opening of the inner plug by disposing a check valve in the space formed between the pouring tap and the inner plug. If a check valve remains in this space after pouring out, liquid leakage may occur.

  Furthermore, the delamination bottle can efficiently pour the contents by peeling the inner layer body from the outer layer body as the contents decrease, and if the outside air cannot be introduced well between the inner layer body and the outer layer body The outer layer body may be deformed following the decrease in the inner layer body. Such deformation affects not only the appearance defect but also operability such as pressure feeding of contents. For this reason, it is indispensable to introduce outside air from the outside air introduction hole formed in the mouth portion of the outer layer body.

  An object of the present invention is to provide a novel dispensing container with a filter that can be smoothly dispensed, has good liquid drainage, and can easily peel the inner layer from the outer layer.

The present invention opens the container body having a double structure in which the outside air is introduced between the inner layer body through the outside air introduction hole formed in the mouth portion of the outer layer body, and the contents pumped from the mouth portion of the container body. And a pouring cap that discharges the contents from the non-return valve through the spout, and the filter is disposed on the upstream side of the spout of the pouring cap. A container,
The dispensing cap interposes a discharge valve that is opened only by the contents from the check valve in the dispensing path formed between the check valve and the outlet and bypasses the discharge valve. A return path is formed between the spout and the check valve, and a first suction valve is interposed in the return path by the negative pressure generated between the check valve and the check valve. A filter is interposed on the upstream side of the first suction valve, and a gap is formed between the container body and the outside air introduction hole, and an air chamber leading to the gap is provided outside the check valve. To the outside world as an outside air introduction path, and the outside air introduction path is provided with a second suction valve that allows the outside air introduction path to communicate with the outside world only by the negative pressure generated in the air chamber. It is a thing.

  In the present invention, the discharge valve can be constituted by an on-off valve having a slit and can be constituted by a tongue piece provided integrally with the discharge valve as the first suction valve. Further, the discharge valve can be constituted by a valve body and an on-off valve composed of a connecting piece that supports the valve body, and a first suction valve can be constituted by a tongue piece provided integrally with the discharge valve. .

  In the discharge cap according to the present invention, a discharge valve that is opened only by the contents from the check valve is interposed in the discharge path formed between the check valve and the discharge outlet, and the discharge valve A return path is formed that bypasses the outlet and passes between the spout and the check valve, and a first intake valve that passes through the return path due to negative pressure generated between the return valve and the check valve is interposed in the return path As a result, the contents from the container main body pumped through the check valve are poured out to the outside by opening the discharge valve, but not from the return path because the first suction valve is in a closed state. . That is, the contents are not poured out through the filter interposed upstream of the first intake valve. This makes it possible to dispense smoothly compared to the case where a filter is interposed in the dispensing path.

  Further, according to the above configuration, after the contents are poured out from the spout through the discharge valve, a negative pressure is generated in the container body, so that the discharge valve is closed, and then the check valve is closed. A negative pressure is generated in the path, and the first suction valve is opened by the negative pressure generated in the return path. As a result, the contents remaining in the spout are drawn into the return path by the negative pressure generated in the return path in order to cause the opening operation of the first suction valve, thereby ensuring good liquid drainage. can do. In addition, the contents pulled back from the spout side through the return path can be returned in a state in which foreign matters, germs, and the like are removed through a filter interposed on the upstream side of the first suction valve.

  Further, in the dispensing cap according to the present invention, a gap that leads to the outside air introduction hole is formed between the container body and the air chamber that leads to the gap is provided outside the discharge valve so that the air chamber communicates with the outside. As a result, the second intake valve that allows the outside air introduction path to communicate with the outside environment only by the negative pressure generated in the air chamber is provided in the outside air introduction path. When a negative pressure is generated between the outer layer body and the inner layer body, a negative pressure is generated in the air chamber through a gap communicating with the outside air introduction hole, and the second suction valve allows the air chamber to communicate with the outside. As a result, the outside air is drawn into the outside air introduction hole through the air chamber and supplied between the outer layer body and the inner layer body, whereby the inner layer body can be easily separated from the outer layer body.

  Therefore, according to the present invention, the pouring is smooth and the liquid is easily drained, and the inner layer body can be easily separated from the outer layer body.

It is a principal part half sectional view which shows the eye drop container with an overcap which is the 1st form of this invention. It is principal part sectional drawing which shows the operation | movement at the time of extraction concerning the form. It is principal part sectional drawing which shows the operation | movement after extraction concerning the form. It is a principal part half sectional view which shows the eye drop container with an overcap which is the 2nd form of this invention. (A) is principal part sectional drawing which shows the operation | movement at the time of extraction concerning this form, (b) is an enlarged view which shows the discharge | emission valve seen from the extraction port side. It is principal part sectional drawing which shows the operation | movement after extraction concerning the form.

  Hereinafter, with reference to drawings, various forms of the extraction container with a filter of the present invention are explained in detail.

  Reference numeral 1 denotes an eye drop container which is the first embodiment of the present invention. Reference numeral 2 denotes a container body having a double structure. The container body 2 includes an outer layer body 2a that forms the outer shape of the container body 2, and an inner layer body 2b that is detachably adhered to the inner surface of the outer layer body 2a. The inner layer body 2b is filled with eye drops or the like as contents. Further, the outer layer body 2a has flexibility that can be deformed and restored, and by repeatedly pressing and releasing, the eye drops filled in the inner layer body 2b can be pumped through the mouth. In addition, outside air is introduced between the outer layer body 2a and the inner layer body 2b through the outside air introduction hole A1 formed at the mouth.

  Reference numeral 3 is a pouring cap attached to the mouth of the container body 2. The dispensing cap 3 has an inner plug 4 that seals the inside of the mouth of the container body 2. The inner plug 4 has an opening A2 that opens a filling space formed in the inner layer body 2b. The inner plug 4 has a seal cylinder portion 4a that seals the inside of the mouth portion. The swelled portion 4c of the seal cylinder portion 4a stands up integrally through the partition wall 4b toward the downstream side (downstream with respect to the direction in which the eye drops or the like as the contents are poured out). The opening A2 is formed in the bulging portion 4c.

  Further, the dispensing cap 3 has a check valve 5 that opens the opening A2 by eye drops or the like fed through the opening A2 of the inner plug 4. The check valve 5 has a cylindrical base portion 5a that is fitted and held in the bulging portion 4c, and the distal end portion of the cylindrical base portion 5a is curved inwardly toward the distal end portion 4d of the bulging portion 4c. Part 5b is formed. The curved portion 5b is formed with a single-letter slit 5c that is sealed by being in close contact with each other. Thereby, the slit 5c can be opened only by pressure such as eye drops fed through the opening A2.

  Moreover, the check valve 5 is seated on the tip portion 4d of the bulging portion 4c as shown in the drawing. The check valve 5 is made of a flexible synthetic resin that can be deformed and restored, and forms a storage space S1 with the curved portion 5b.

  Further, the pouring cap 3 has a case member 6. The case member 6 has a mounting cylinder 6 a that is mounted on the outer side of the mouth of the container body 2. The mounting cylinder 6 a is integrally provided with an outer shell portion 6 b that forms a storage space S 2 for the check valve 5 together with the inner plug 4. The outer shell portion 6 b has a peripheral wall 6 b 1 that holds the cylindrical base portion 5 a of the check valve 5 together with the bulging portion 4 c of the inner plug 4. Thereby, the storage space S2 of the check valve 5 is partitioned by the check valve 5 into an inner diameter side storage space S2-1 and an outer diameter side storage space S2-2 as will be described later.

  At the tip (downstream side) of the peripheral wall 6b1, an inner diameter side annular wall 6b2 that forms the inner diameter side storage space S2-1 of the check valve 5 together with the peripheral wall 6b1 is provided. Further, an opening A3 that opens the inner diameter side storage space S2-1 is formed in the inner diameter side annular wall 6b2. A discharge valve 7 is provided in the opening A3. The discharge valve 7 has a cylindrical base portion 7a fitted and held on the inner diameter side annular wall 6b2, and forms a curved portion 7b in which the distal end portion of the cylindrical base portion 7a curves outward toward the downstream side. A cross-shaped slit 7c is formed in the curved portion 7b. The slit 7c can be opened only by the pressure of the eye drops fed through the check valve 5. The check valve 7 is also made of a flexible synthetic resin that can be deformed and restored, and forms a storage space S3 inside the curved portion 7b.

  In addition, the pouring cap 3 has a pouring tap 8 fixed to the case member 6. The spout 8 is fitted and held by the peripheral wall 6b1. Further, the spout 8 forms a storage space S4 for the discharge valve 7 between the outer shell 6b of the case member 6 and a spout A4 leading to the storage space S4 for the discharge valve 7. As a result, a pour route r1 is formed between the check valve 5 and the spout A4 as shown by the solid line arrow in FIG. Further, as described above, a discharge valve 7 that is opened only by eye drops from the check valve 5 is interposed in the extraction route r1.

  Further, a first through hole A5 is formed in the inner diameter side annular wall 6b2 to allow the space between the storage space S4 of the discharge valve 7 and the inner diameter side storage space S2-1 of the check valve 5. As a result, the return path r2 between the spout A4 and the check valve 5 bypasses the discharge valve 7 and passes through the spout A4 and the check valve 5, as shown by a two-dot chain line arrow in FIG. Is formed. In the return path r 2, a first suction valve 9 that passes through the return path r 2 only by a negative pressure generated between the check valve 5 and the discharge valve 7 is interposed. The first intake valve 9 is configured by a tongue piece provided integrally with the discharge valve 7. As shown in FIG. 2 and the like, the first suction valve 9 is in contact with the back surface (inner surface) of the spout 8 and seals the first through hole A5 from the outside through the spout A4. The form of the first intake valve 9 is not limited to the tongue piece provided integrally with the discharge valve 7. Further, the discharge valve 7 and the intake valve 9 can be configured separately.

  An annular filter 10 is provided on the back surface (upstream side surface) of the inner diameter side annular wall 6b2 so as to surround the opening A3. As a result, the filter 10 is interposed on the upstream side of the first suction valve 9 in the return path r2. In addition, as long as the filter 10 prevents that a microbe, refuse, etc. flow in into the container main body 2, various filters, such as an antibacterial filter and a filtration filter, can be applied.

  Further, the outer shell portion 6b of the case member 6 is provided with an outer diameter side annular wall 6b3 extending radially outward at the rear end of the peripheral wall 6b1. The outer diameter side annular wall 6b3 is integrally connected to the mounting cylinder 6a via a large diameter peripheral wall 6b4. Thereby, the case member 6 is attached to the mouth of the container body 2. Further, the outer diameter side annular wall 6b3 is fitted to an outer cylindrical wall 4e that stands integrally with the inner wall 4 from the partition wall 4b. Thereby, the outer diameter side storage space S2-2 arranged outside the discharge valve 5 becomes an annular air chamber partitioned by the discharge valve 5, the inner plug 4 and the case member 6.

  Further, the outer diameter side annular wall 6b3 is formed with a second through hole A6 that allows the outer diameter side storage space (hereinafter referred to as “air chamber”) S2-2 of the check valve 5 to communicate with the outside. In addition, the air chamber S2-2 includes a second suction valve 11 that is integrated with the check valve 5 so as to allow the air chamber S2-2 to communicate with the outside only by the negative pressure generated in the air chamber S2-2. Let The second intake valve 11 is configured by a tongue piece provided integrally with the check valve 5. As shown in FIG. 1 and the like, the second intake valve 11 seals the second through hole A6 by contacting the back surface (upstream surface) of the outer diameter side annular wall 6b3. The form of the second suction valve 11 is not limited to the tongue piece provided integrally with the check valve 5. Further, the check valve 5 and the suction valve 9 can be configured separately.

  On the other hand, at the base of the mouth portion of the container body 2 (outer layer body 2a), there is provided a sealing step portion 2a1 in which an extension 6a1 extending from the mounting cylinder 6a seals the entire circumference of the mouth portion. As a result, a gap C sealed by the mounting cylinder 6a is formed between the container body 2 (outer layer body 2a). The gap C leads to an outside air introduction hole A1 formed in the outer layer body 2a. The inner plug 4 is formed with a third through hole A7 that allows the air chamber S2-2 to communicate with the gap C. As a result, an outside air introduction path R3 is formed between the container body 2 and the dispensing cap 3 as shown by the dashed arrow in FIG. Since the second intake valve 11 is interposed in the outside air introduction path R3, when a negative pressure is generated between the outer layer body 2a and the inner layer body 2b, the outside air introduction hole A1 is shown as indicated by a broken line arrow in FIG. Can be communicated from the third through hole A7 to the outside through the second through hole A6 through the air chamber S2-2.

  In this embodiment, after removing the overcap 30 from the state shown in FIG. 1, as shown in FIG. 2, if the eye drop container 1 is inverted and the container body 2 is pressed, as shown in FIG. The eye drops and the like in the container main body 2 can be poured out to the outside through a pouring route r1 formed between 5 and the pouring outlet A4. In addition, a discharge valve 7 that is opened only by eye drops or the like from the check valve 5 is interposed in the discharge route r1, and as shown in FIG. 3, the discharge valve 7 is bypassed to reverse the discharge port A4. A return path r2 to be communicated with the check valve 5 is formed, and a first suction valve 9 to be passed through the return path r2 by a negative pressure generated between the return valve r2 and the check valve 5 is interposed in the return path r2. Thus, the contents such as eye drops from the container main body 2 pumped through the check valve 5 are poured out to the outside by opening the discharge valve 7, as shown by the solid line arrow in FIG. Is not dispensed because the first suction valve 9 is closed. That is, contents such as eye drops are not poured out through the filter 10 interposed on the upstream side of the first suction valve 9. This makes it possible to dispense smoothly as compared with the conventional case where the filter 10 is interposed in the dispensing path r1.

  Moreover, according to the said structure, after releasing the press of the container main body 2 and pouring out eye drops etc. from the spout A4 through the discharge valve 7, a negative pressure arises in the container main body 2 (inner layer body 2b). Thus, as shown by the two-dot chain arrow in FIG. 3, the discharge valve 7 is closed, and then the check valve 5 is closed, so that a negative pressure is generated in the return path r2, and the negative pressure generated in the return path r2 is generated. The first suction valve 9 is opened by the pressure. Thereby, the eye drops and the like remaining in the spout A4 are drawn into the return path r2 by the negative pressure generated in the return path r2 in order to cause the opening operation of the first suction valve 9 to be good. It is possible to ensure that the liquid runs out. In addition, the contents such as eye drops drawn back from the spout A4 side through the return path r2 can be returned in a state in which foreign matters and germs are removed through the filter 10 interposed on the upstream side of the first suction valve 9. it can.

  Furthermore, in this embodiment, a gap C that leads to the outside air introduction hole A1 is formed between the container body 2 and an air chamber S2-2 that leads to the gap C is provided outside the check valve 5, and the air chamber S2 -2 is communicated to the outside world to form an outside air introduction path r3, and the second intake valve 11 that allows the outside air introduction path r3 to communicate with the outside world only by the negative pressure generated in the air chamber S2-2 in the outside air introduction path r3. When a negative pressure is generated between the outer layer body 2a and the inner layer body 2b as the eye drops are dispensed, a negative pressure is generated in the air chamber S2-2 through the gap C leading to the outside air introduction hole A1. When the second suction valve 11 is opened, the air chamber S2-2 is brought to the outside through the through hole A6. As a result, as indicated by the broken line arrow in FIG. 3, the outside air is drawn into the outside air introduction hole A1 through the through hole A6 and supplied between the outer layer body 2a and the inner layer body 2b. 2b can be easily peeled off.

  Therefore, according to the present invention, the dispensing is smooth and the liquid runs out well, and the inner layer body 2b can be easily separated from the outer layer body 2a.

  4-5 is an eye drop container which is the 2nd form of this invention. In this embodiment, the discharge valve 7 is constituted by an opening / closing valve including a valve body 7d and a connecting piece 7e that supports the valve body 7d, instead of the slit valve.

  Specifically, the discharge valve 7 has a cylindrical base portion 7a fitted and held on the inner diameter side annular wall 6b2, and a valve element is provided at the distal end portion of the cylindrical base portion 7a as shown in FIG. 7d is elastically supported through three connecting pieces 7e. As shown in FIG. 4 and the like, the valve body 7d is seated on the inner diameter side annular wall 6b2 to seal the opening A3, and can be opened only by pressure such as eye drops fed through the check valve 5.

  According to the present invention, at least one connecting piece 7e may be provided. In this embodiment, the basic configuration other than the check valve 5 and the operation method thereof are the same as those in the first embodiment.

  The above description only shows one embodiment of the present invention, and various modifications can be made within the scope of the claims. For example, if the container main body 2 can pour out the contents filled in the inner layer body 2b by pressing the outer layer body 2a, the outer layer body 2a is positive by having flexibility as in this embodiment. In particular, the present invention is not limited to one that can be deformed and restored. The container body 2 is not limited to the delamination container, and can simply adopt a double-structure container including the outer layer body 2a and the inner layer body 2b.

  Further, if the first suction valve 9 is provided integrally with the discharge valve 7 as in the above-described embodiments, the number of parts can be reduced, and simplification of the dispensing route r1 and the return route r2. Can do. The same applies to the case where the second suction valve 11 is provided integrally with the check valve 5. In each of the above embodiments, the pouring cap 3 is basically composed of the inner plug 4, the case member 6 and the pouring plug 8. The basic configuration is the pouring route r1, the return route r2, and the introduction of outside air. The present invention is not limited to this as long as it forms the path r3 (air chamber S2-2). In addition, the shape of the slit used for the check valve 5 or the discharge valve 7 can be changed or selected as appropriate in addition to a single character shape and a cross shape, as well as an existing shape.

  The present invention opens the container body having a double structure in which the outside air is introduced between the inner layer body through the outside air introduction hole formed in the mouth portion of the outer layer body, and the contents pumped from the mouth portion of the container body. And a pouring cap that discharges the contents from the non-return valve through the spout, and the filter is disposed on the upstream side of the spout of the pouring cap. As long as it is an outlet container, it is not limited to an eye drop container.

1 eye drop container (first form)
2 container body 2a outer layer body 2b inner layer body 3 pouring cap 4 inner plug 4c bulging part 5 check valve 6 case member 6a mounting cylinder 6b outer shell part 6b1 peripheral wall 7 discharge valve 7a cylindrical base part 7b curved part (first Form)
7c Slit (first form)
7d Valve body (second form)
7e Connecting piece (second form)
8 Pouring tap 9 First suction valve (for contents)
10 Filter 11 Second intake valve (for outside air)
20 eye drop container (second form)
A1 Outside air introduction hole A2 Opening (inner plug)
A3 opening (case member)
A4 spout (pour tap)
A5 1st through hole (case member)
A6 First through hole (case member)
r1 discharge path r2 return path r3 outside air introduction path S1 storage space S2 check valve storage space S2-1 check valve 5 inner diameter side storage space S2-2 check valve outer diameter side storage space (air chamber)

Claims (3)

A double-structured container body in which outside air is introduced between the outer layer body and the inner layer body through an outside air introduction hole formed in the mouth part of the outer layer body, and a check that is opened only by the contents pumped from the mouth part of the container body A discharge container with a filter, which has a valve and a discharge cap that discharges the contents from the check valve through the discharge port, and a filter is arranged upstream of the discharge port of the discharge cap. And
The dispensing cap interposes a discharge valve that is opened only by the contents from the check valve in the dispensing path formed between the check valve and the outlet and bypasses the discharge valve. A return path is formed between the spout and the check valve, and a first suction valve is interposed in the return path by the negative pressure generated between the check valve and the check valve. While interposing a filter upstream of the first suction valve,
A gap that leads to the outside air introduction hole is formed between the container body and an air chamber that leads to the gap is provided outside the check valve. The outside air introduction path is formed by allowing the air chamber to communicate with the outside world. A dispensing container with a filter, characterized in that a second suction valve for allowing the outside air introduction path to communicate with the outside world is interposed only by the negative pressure generated in the air chamber.   2. The filter-attached note according to claim 1, wherein the discharge valve is constituted by an on-off valve having a slit, and the first suction valve is constituted by a tongue piece provided integrally with the discharge valve. Out container.   2. The exhaust valve according to claim 1, wherein the discharge valve is configured by an on-off valve including a valve body and a connecting piece that supports the valve body, and the first suction valve is configured by a tongue piece that is provided integrally with the discharge valve. An extraction container with a filter characterized by the above.

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