EP1386850A1 - Check valve and liquid container with check valve - Google Patents

Check valve and liquid container with check valve Download PDF

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Publication number
EP1386850A1
EP1386850A1 EP02705158A EP02705158A EP1386850A1 EP 1386850 A1 EP1386850 A1 EP 1386850A1 EP 02705158 A EP02705158 A EP 02705158A EP 02705158 A EP02705158 A EP 02705158A EP 1386850 A1 EP1386850 A1 EP 1386850A1
Authority
EP
European Patent Office
Prior art keywords
opening
valve body
container
tubular body
check valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02705158A
Other languages
German (de)
English (en)
French (fr)
Inventor
Tadashi Hagihara
Naoya Tani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2001074962A external-priority patent/JP2004291968A/ja
Priority claimed from JP2001284366A external-priority patent/JP2004291969A/ja
Application filed by Individual filed Critical Individual
Publication of EP1386850A1 publication Critical patent/EP1386850A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/2031—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure the element being formed by a slit, narrow opening or constrictable spout, the size of the outlet passage being able to be varied by increasing or decreasing the pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/44—Closures
    • B65D35/46—Closures with valves

Definitions

  • Japanese Laid-Open Utility Model Publication Number SHO 60-89143 and Japanese Laid-Open Utility Model Publication Number HEI 2-83257 disclose a check valve structure or plug structure in which a slit is provided in an elastic body provided in the opening of a container, wherein the slit is pushed apart and opened by liquid or the like pushed out by internal pressure created by an outside force applied to the container, and the slit is closed by the self-restoring force of the elastic body when the outside force applied to the container body is released after the liquid or the like is discharged.
  • the latter is a thin plate-shaped upper wall plate hollowed in an arc shape which is formed by an elastic material, and is provided with a slit in the center portion thereof.
  • the elastic portion needs to have suitable elasticity to prevent leakage from the slit, but if the elasticity is made higher than such requirement, it becomes difficult to discharge contents, and this lowers the convenience of the container. For this reason, an excessive elastic force is not applied, but because the mechanism uses nothing outside of the elastic force of the elastic body to close the slit, the use of only the elastic force will essentially create an insufficient force for keeping the slit sealed. Accordingly, as shown in Fig. 13, when some outside force acts on the elastic body, the elastic body is easily deformed and the seal of the slit is broken, whereby the liquid inside the container leaks out, and conversely air is sucked inside the container.
  • these days most tube containers are made of a laminate material, and this by itself because of the elastic body will result in the container body having a strong restoring force. Namely, because negative pressure is created inside the container body by the restoring force of the container body, there are cases where the contents that have been pushed out up to the nozzle opening are pulled back inside the container again.
  • means are provided so that the elastic portion does not expand too much by the pressure inside the container, but no means are provided to prevent the contraction of the elastic portion in reverse. For this reason, as shown in Fig. 14, the tubular portion collapses, whereby the elastic body is operated in the direction that opens the slit.
  • liquids that need to be measured first include medicines and cosmetics, but also includes various substances such as paints, detergents and the like.
  • liquid container of the present invention has the characteristics given below.
  • Fig. 1 is an outside perspective view showing a first embodiment of the present invention.
  • Fig. 1 is a check valve body
  • 2 is a discharge opening
  • 3 is a container body.
  • Fig. 2 is a vertical cross-sectional view of an essential portion around the check valve body.
  • the check valve 2 is constructed from a tubular body 4, a valve body 5 and an outer casing 6 respectively shown in Figs. 3 (a), (b) and (c), and a protection cap 7 shown in Fig. 2.
  • the tubular body 4 has a container body side end portion 8 which is formed in a tapered shape to reduce fluid resistance. Because the tubular body 4 is also equipped with a function of maintaining the shape of the valve body 5, a material having a hardness at a degree which does not easily deform is preferred.
  • the valve body 5 is formed into a hollow projectile shape, and a slit 9 is provided in the tip thereof.
  • the valve body 5 is formed by an elastic material such as rubber or the like, wherein the slit 9 is normally sealed by the elastic force (restoring force) of the valve body 5 itself, but when the container body 3 is pressed by hand or the like to apply an outside pressure to deform the container, the seal of the slit 9 is easily broken by the inside pressure to form an opening.
  • the outer casing 6 is provided to cover the valve body 5.
  • the outer casing 6 also has a function of restricting expansion deformation of the valve body 5.
  • the shape is roughly the same as that of the valve body 5, and the discharge opening 2 which is normally open is provided in the tip thereof
  • the material is preferably equipped with some elasticity.
  • the discharge opening 2 is provided so as to match a protrusion 12 provided in a cap 11 shown in Fig. 2, and by sealing both, the contents (a liquid, a semi-fluid or the like) remaining inside a discharge opening passage 20 is prevented from being oxidized by contact with air.
  • a flange portion 13 is provided on the outer surface of the outer casing 6, and as shown in Fig. 2, the flange portion 13 is fitted into the tip of a tubular portion 14 of the container body 3.
  • the protection cap 7 is formed so as to screw onto a screw provided on the outside of the tubular portion 14 of the container body 3.
  • valve body 5 in the case where it is assumed that such structure is not provided, namely, in the case where there is no tubular body like that shown in Fig. 14, then in the case where the pressure inside the container forms a negative pressure by the elastic (restoring) force of the container body 3, the valve body 5 is deformed inward and this opens the slit 9, whereby a gap is created between the valve body and the outer casing, and this allows air to flow into the inside of the container body. Further, as shown in Fig. 16, in the case where there is no outer casing 6, usually only expansion occurs without opening the slit 9 of the valve body. Accordingly, as is required in the present invention, the three functions of the tubular body 4, the valve body 5 and the outer casing 6 preferably work together systematically.
  • spaces A, B are provided respectively between the tip 15 of the tubular body 4 and an inside surface 16, and between a valve body tip 17 and an outer casing inner surface 18.
  • the space A collects contents which have passed through the passage 19 of the tubular body 4 from the inside of the container body, and as the volume thereof becomes large, the inner surface 16 of the valve body 5 is pressed by the dispersed pressure.
  • the space B determines the transfer quantity of the valve body 5. As the depth (the height in the up and down direction in the drawings) C of the space B becomes large, the valve body 5 undergoes a large expansion, and this opens the slit 9 by a large amount, whereby the opening also becomes large.
  • the check valve 2 of the invention having the structure described above operates as shown in Fig. 6.
  • the container body 3 when the container body 3 is pressed by hand or the like, the pressure inside the container rises due to the applied outside pressure, and this pushes out the contents toward the discharge opening 2 as shown by the long arrows in the drawing.
  • the pushed out contents pass through the passage 19 of the tubular body 4 and enter the space A.
  • the pressure inside the space A increases, and because the inner surface 16 of the tip of the valve body 5 is pushed to the outside, the valve body tip 17 expands while the space B contracts until contact is made with the inner surface 18 of the outer casing 6.
  • the slit 9 provided in the tip of the valve body 5 is opened, and the contents flow out and are discharged from the discharge opening 2 of the tip of the outer casing 6.
  • the opening provided in the valve 5 is not limited in this way to the slit 9, and there is no limit on the mechanism as long as such mechanism is opened by a rise in the pressure inside the container and automatically closed when the pressure inside the container is released, and as described later, it is of course possible to use a so-called opening hole.
  • Fig. 16 shows a check valve equipped with two slits
  • Fig. 17 shows the case where the tubular body 4 and the valve body 5 are formed integrally.
  • the tubular body 4 and the valve body 5 are formed integrally.
  • the tubular body 4 may be formed by a hard material such as plastic or the like which is then covered by an elastic material.
  • the check valve By constructing the check valve in this way, the contents are discharged only when the pressure inside the container body is constant. Namely, the contents are not discharged for complex outside pressures such as when the container body 3 is pressed carelessly. Accordingly, this structure is preferred very much for the case where the contents need to be dripped, wherein it is possible to prevent a continuous discharge.
  • Fig. 21 and Fig. 22 show the structure in which a protrusion 26 provided on the head of the tubular body 4 and a opening hole 27 provided on the valve body 5 are matched to form a valve mechanism.
  • Fig. 21(a) is a vertical cross-sectional view of the normal state
  • Fig. 21(b) is a plan view of the tubular body 4
  • Fig. 22 is a vertical cross-sectional view of the discharge state.
  • Opening holes 22 is provided around the protrusion 26 of the tubular body 4. Four opening holes are shown in the drawings, but it is of course possible to provided any number of such opening holes.
  • Fig. 23 through Fig. 25 shown other different embodiments of the present invention.
  • valve body 5 is provided so as to be movable in the space B provided between the tubular body 4 and the outer casing 6.
  • a spring 28 is provided between the valve body 5 and the outer casing 6, and the check valve is constructed so that the valve body 5 is sealed against the tubular body 6 in the normal state.
  • Fig. 23 shows the type where the protrusion 23 provided on the valve body 5 forms a contact seal against the tip opening 22 of the tubular body 4
  • Fig. 25 shows the type where the protrusion 26 of the tip of the tubular body 4 and the opening hole 27 of the valve body 5 are sealed.
  • Fig. 23 and Fig. 24 are the same as the example of Fig. 19, and when the pressure inside the container body is above a prescribed level, the valve body 5 covers the discharge opening 2 of the outer casing 6, and this stops the discharging of contents.
  • Fig. 23 shows the normal state
  • Fig. 24(a) shows the discharge state
  • Fig. 24(b) shows the closed state.
  • Fig. 26 shows the case where the upper portion of the protection cap 7 is formed in the shape of a cup to provide a measuring portion 29. In this way, it is possible to measure the contents discharged from the discharge opening 2.
  • the measuring portion 29 is preferably formed by a transparent material.
  • the measuring portion 29 is directed upward, and then the container body 3 is pressed to measure out a required quantity. This is ideally suited to medicine and detergent containers.
  • Fig. 27 is a perspective view showing a liquid measuring container of the present invention.
  • 30 is a liquid measuring container
  • 3 is a container body
  • 7 is a protection cap
  • 29 is a measuring container (referred to as a cup below)
  • 31 is an air intake opening
  • 32 is a suction tube.
  • Fig. 28 is a vertical cross-sectional view of the vicinity of the protection cap 7 which is an essential portion of the present invention.
  • the check valve 1 is provided in a concave portion in the center portion inside the protection cap 7, and the discharge opening 2 of the tip thereof is inserted into an opening 32 provided in the center of the protection cap 7.
  • the check valve 1 is inserted into a tubular member 14, and the tubular member 14 is fitted into the concave portion inside the protection cap 7.
  • a screw may be used to engage the protection cap 7 and the tubular member 14.
  • the suction tube 33 hangs down in the lower portion of the tubular member 14, and the tip thereof reaches the bottom of the container body 3. This arrangement makes it possible to suck up liquid from the bottom of the container body 3.
  • the thickness (inner diameter) of the suction tube 33 can be changed in accordance with the viscosity of the liquid being used.
  • the inner diameter is made thick in the case of a high viscosity liquid, and made thin in the reverse case of a low viscosity liquid.
  • the cup 29 is fixed by a screw to the upper end of the protection cap 7.
  • fitting may be carried out in place of a screw, but the liquid collected in the cup 29 must be prevented from leaking. For this reason, the use of an O-ring is also effective.
  • the cup 29 is not fixed and is capable of being removed. In this way, the cup 29 can be easily removed and washed, and as shown in Fig. 30, the cup 29 is preferably replaced by different capacity cups to match the measured quantity.
  • the cup 29 is preferably a transparent material, and graduations are preferably provided to make it possible to easily measure quantities from the side.
  • an air intake opening 38 is provided in the side of the protection cap 7.
  • a through hole 39 is provided toward the center from the side of the protection cap 7.
  • a step 40 inside the protection cap, and a gap 41 is provided between the step 40 and the periphery of the tubular member 14.
  • the through hole 39 opens into the gap 41.
  • a side surface side opening of the through hole 39 has a wide inner diameter at a prescribed depth, a tubular member 42 is fitted into such portion, a check valve 43 is inserted into the inside thereof, and a cap 44 prevents removal of the check valve 43.
  • an air intake hole 45 is open in the center thereof.
  • the check valve 43 has a simpler structure than the check valve 1 of the discharge path described above. Of course, this does not deny the use of the same structure as the check valve 1 described above.
  • such air intake opening is closed when the pressure inside the container body is a positive pressure, and opened when there is a negative pressure.
  • the liquid measuring container of the present invention having the structure described above is used as follows below.
  • Fig. 33 shows the state where a prescribed quantity is measured into the inside of the cup.
  • the check valve 1 is automatically closed by the elasticity of the valve body 5.
  • a negative pressure is formed inside the container body by the restoring force due to the elasticity of the container body 3 as shown in Fig. 34, and then the check valve 43 of the air intake opening 38 is opened, whereby outside air flows into the inside of the container body.
  • the check valve 43 of the air intake opening 38 is automatically closed by its own elastic force. Then, the contents inside the cup may be distributed.
  • the present invention has the structures described above, it is possible to provide a check valve ideally suited to drip discharge of contents (a liquid, a semi-fluid or the like) and a container having a high preservability equipped with such check valve.
  • the pressure applied to the container can be very easily controlled to carry out a drip discharge of the contents, and because the valve mechanism portion is not exposed, the check valve can be operated reliably without the valve mechanism receiving outside pressure or the like, and it is possible to reliably prevent the reverse flow of air to the inside of the container body.
  • the adjustment of the discharge quantity of the contents can be freely adjusted in accordance with the viscosity.
  • the measuring cup can be removed and washed, such structure is hygienic.
  • Fig. 1 is a perspective view showing the first embodiment of a check valve of the present invention.
  • Fig. 2 is a vertical cross-sectional view of an essential portion thereof
  • Fig. 3(a) is a vertical cross-sectional view of a tubular body
  • Fig. 3(b) is a vertical cross-sectional view of a valve body
  • Fig. 3(c) is a vertical cross-sectional view of an outer casing.
  • Fig. 4 is an explanatory view of the space partitioned by the valve body.
  • Fig. 5 is an explanatory view showing the adjustment dimensions.
  • Fig. 6 is an explanatory view showing the operation.
  • Fig. 7 is an explanatory view showing the state where the cap is closed.
  • Fig. 1 is a perspective view showing the first embodiment of a check valve of the present invention.
  • Fig. 2 is a vertical cross-sectional view of an essential portion thereof
  • Fig. 3(a) is a vertical cross-sectional view
  • FIG. 8(a) is a front view of the case where one slit is provided
  • Fig. 8(b) is a plan view thereof
  • Fig. 8(c) is a vertical cross-sectional view showing the state where the slit is open.
  • Fig. 9(a) ⁇ 9(e) are explanatory views showing applied examples of the slit.
  • Fig. 10 is an explanatory view showing an example applied to a bottle.
  • Fig. 11 is an explanatory view showing an example applied to gusset bag.
  • Fig. 12 is an explanatory view showing an example applied to standing pouch.
  • Fig. 13 is an explanatory view showing prior art.
  • Fig. 14 and Fig. 15 are explanatory views showing the case where part of a function is omitted.
  • FIG. 20(b) are vertical cross-sectional views of an essential portion respectively showing the normal state and the discharge state for one example of a variation of the tubular body and the valve body.
  • Fig. 21(a) is a vertical cross-sectional view of an essential portion showing one example of a variation of the tubular body and the valve body
  • Fig. 2 1 (b) is a plan view of the tubular body.
  • Fig. 22 is a vertical cross-sectional view of an essential portion showing the discharge state for one example of a variation of the tubular body and the valve body.
  • Fig. 23 is a vertical cross-sectional view of an essential portion showing the normal state for one example of a variation of the tubular body and the valve body in a second embodiment.
  • FIG. 24(b) are vertical cross-sectional views of an essential portion respectively showing the discharge state and the closed state for one example of a variation of the tubular body and the valve body in the second embodiment.
  • Fig. 25(a) and Fig. 25(b) are vertical cross-sectional views of an essential portion respectively showing the normal state and the discharge state for one example of a variation of the tubular body and the valve body in the second embodiment.
  • Fig. 26 is a conceptual view of the case where the check valve of the present invention is applied to a container equipped with a liquid measuring function.
  • Fig. 27 is a perspective view showing the first embodiment of a container equipped with a liquid measuring function of the present invention.
  • Fig. 28 is a vertical cross-sectional view of an essential portion showing the state where the cover is removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP02705158A 2001-03-15 2002-03-13 Check valve and liquid container with check valve Withdrawn EP1386850A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2001074962 2001-03-15
JP2001074962A JP2004291968A (ja) 2001-03-15 2001-03-15 逆止弁及び逆止弁を備えた容器
JP2001284366 2001-09-19
JP2001284366A JP2004291969A (ja) 2001-09-19 2001-09-19 液体計量容器
PCT/JP2002/002390 WO2002076845A1 (fr) 2001-03-15 2002-03-13 Clapet et recipient de liquide a clapet

Publications (1)

Publication Number Publication Date
EP1386850A1 true EP1386850A1 (en) 2004-02-04

Family

ID=26611385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02705158A Withdrawn EP1386850A1 (en) 2001-03-15 2002-03-13 Check valve and liquid container with check valve

Country Status (7)

Country Link
US (1) US20040112916A1 (zh)
EP (1) EP1386850A1 (zh)
KR (1) KR20040012732A (zh)
CN (1) CN1498184A (zh)
CA (1) CA2441026A1 (zh)
TW (1) TW577844B (zh)
WO (1) WO2002076845A1 (zh)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9155679B2 (en) * 2009-04-21 2015-10-13 Terumo Kabushiki Kaisha Medical container and syringe
US20120114800A1 (en) * 2010-11-10 2012-05-10 Ecosentials, Llc Drink Enhancer System
JP5333611B2 (ja) * 2012-01-10 2013-11-06 サーモス株式会社 飲料用容器
CN102795396B (zh) * 2012-08-18 2014-12-24 李红彪 可自动开闭的瓶盖
CN102795398B (zh) * 2012-08-18 2015-03-25 李红彪 一种自动开闭的瓶盖
US10343183B2 (en) * 2016-12-21 2019-07-09 Stoneridge Kitchen & Bath Llc Glue gun
JP6180009B1 (ja) * 2017-05-08 2017-08-16 瑟芬 洪 流量調節機構を備えた真空機構
US11448542B2 (en) 2018-10-31 2022-09-20 Dow Global Technologies Llc Dosing cap with adjustable volume
CN110812535A (zh) * 2019-10-24 2020-02-21 自贡市第四人民医院(自贡市急救中心) 耳挂式鼻腔分泌物收集装置及收集方法
KR102279627B1 (ko) 2021-03-02 2021-07-21 한국콜마주식회사 내용물 용기
EP4302638A1 (en) 2021-03-02 2024-01-10 Kolmar Korea Co., Ltd. Container for contents
CN113598509B (zh) * 2021-07-30 2024-06-28 绍兴市佳彩塑业有限公司 一种复合软管瓶

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Publication number Priority date Publication date Assignee Title
JPS4967781A (zh) * 1972-10-14 1974-07-01
JPS5631956Y2 (zh) * 1976-07-20 1981-07-30
JPS5330438U (zh) * 1977-09-16 1978-03-15
JPS6081862U (ja) * 1983-11-10 1985-06-06 サンスター株式会社 押出容器
JPH047092Y2 (zh) * 1984-09-06 1992-02-26
JP3820489B2 (ja) * 1997-06-05 2006-09-13 忠 萩原 空気の混入を防止した自立型容器
JP2000203605A (ja) * 1998-11-16 2000-07-25 Waterfall Co Inc 汚染のない分配送出システムのためのカ―トリッジ

Non-Patent Citations (1)

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Title
See references of WO02076845A1 *

Also Published As

Publication number Publication date
KR20040012732A (ko) 2004-02-11
US20040112916A1 (en) 2004-06-17
CA2441026A1 (en) 2002-10-03
WO2002076845A1 (fr) 2002-10-03
CN1498184A (zh) 2004-05-19
TW577844B (en) 2004-03-01

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