EP1849528A1 - Recipient de stockage de fluide avec piston - Google Patents

Recipient de stockage de fluide avec piston Download PDF

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Publication number
EP1849528A1
EP1849528A1 EP06113308A EP06113308A EP1849528A1 EP 1849528 A1 EP1849528 A1 EP 1849528A1 EP 06113308 A EP06113308 A EP 06113308A EP 06113308 A EP06113308 A EP 06113308A EP 1849528 A1 EP1849528 A1 EP 1849528A1
Authority
EP
European Patent Office
Prior art keywords
fluid
storage container
valve structure
main body
piston
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Withdrawn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
EP06113308A
Other languages
German (de)
English (en)
Inventor
Masatoshi Masuda
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
Application filed by Individual filed Critical Individual
Priority to EP06113308A priority Critical patent/EP1849528A1/fr
Publication of EP1849528A1 publication Critical patent/EP1849528A1/fr
Withdrawn legal-status Critical Current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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • B65D83/0044—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container the piston having a dispensing opening formed in the piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • B05B11/029—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container located on top of the remaining content
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1032—Pumps having a pumping chamber with a deformable wall actuated without substantial movement of the nozzle in the direction of the pressure stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0097—Means for filling or refilling the sprayer

Definitions

  • the present invention generally relates to a fluid storage container which causes a fluid which was stored within a container's main body to flow out to the outside from a discharge member which is established at the opening part which was formed on top of the container's main body.
  • Patent reference 1 This kind of fluid storage container is well-known as a container which is formed to allow fluid to flow out that has been stored inside by attaching to an opening neck an emptying pump as characterized in Japanese Patent Laid-open No. 2003-104416 (Patent reference 1).
  • the invention in Patent reference 1 provides a container main body which stores the fluid and a slidable base wall 3 at the base of the container's main body. Because of this structure, according to the invention of Patent reference 1, even with a reduction in the fluid which is stored in the container's main body, by raising the base wall 3 upward, it is possible to prevent a reduction within the container's main body, and from this prevention, it is possible to prevent outside air from flowing inside the container's main body from the reduction in pressure within the container's main body.
  • the present invention is constructed in order to solve at lease one of the previously described problems, and along with preventing fluid leaks, has an object of providing a fluid storage container which can prevent contact with outside air that has entered the inside of the container.
  • the present invention can be practiced in various ways including, but not limited to, embodiments described below, wherein numerals used in the drawings are used solely for the purpose of ease in understanding of the embodiments which should not be limited to the numerals. Further, in the present specification, different terms or names may be assigned to the same element, and in that case, one of the different terms or names may functionally or structurally overlap or include the other or be used interchangeably with the other.
  • the present invention provides a fluid storage container comprising: (i) a container main body (e.g., 10, 10', 110) for storing fluid inside comprised of an opening section (e.g., 11, 11', 111) formed on its top, a cylinder section (e.g., 12, 12', 112) formed on its side, and a bottom section (e.g., 15, 15', 115); (ii) a tube member (e.g., 30, 30', 30”) immovably disposed inside the cylinder section and extending nearly from the bottom section to the opening section, inside which tube member constitutes a flow path (e.g., 31, 31', 31") for the fluid to flow therethrough via its lower end (e.g., 32, 32', 32") toward the opening section; and (iii) a piston member (e.g., 40, 40', 140, 70, 70', 170) disposed between the cylinder section and the tube member and being fluid-tightly slidable in an axial
  • the above embodiment further includes, but is not limited to, the following embodiments:
  • the piston member may have an inner periphery (e.g., 47, 77) constituting a hole (e.g., 41, 71) through which the tube member is fluid-tightly inserted, and an outer periphery (e.g., 48, 78) fluid-tightly inserted in the cylinder section, said inner periphery and said outer periphery each having at least two fluid-tight portions (e.g., 42, 43, 44a, 44b; 44a', 44b', 72, 73, 74a, 74b: 74', 74b').
  • the at least two fluid-tight portions of the inner periphery may comprise an upper fluid-tight portion (e.g., 43, 73) arranged at an upper edge part of the inner periphery and a lower fluid-tight portion (e.g., 42, 72) arranged at a lower edge part of the inner periphery; and the at least two fluid-tight portions of the outer periphery may comprise an upper fluid-tight portion (e.g., 44a, 44a', 74a, 74a') arranged at an upper edge part of the outer periphery and a lower fluid-tight portion (e.g., 44b, 44b', 74b, 74b') arranged at a lower edge part of the outer periphery.
  • an upper fluid-tight portion e.g., 43, 73
  • a lower fluid-tight portion e.g., 42, 72
  • the at least two fluid-tight portions of the outer periphery may comprise an upper
  • Each of the upper and lower fluid-tight portions of the inner periphery and the upper and lower fluid-tight portions of the outer periphery may comprise at least one annular convex portion.
  • the at least one annular convex portion constituting the upper fluid-tight portion (e.g., 43, 73) of the inner periphery may more protrude inwardly than the at least one annular convex portion constituting the lower fluid-tight portion (e.g., 42, 72) of the inner periphery.
  • the inner periphery may have a length (e.g. L2) in an axial direction of the tube member, which is greater than a length (e.g., L1) of the outer periphery in the axial direction.
  • a lower edge (e.g., 44b, 44b', 74b, 74b') of the outer periphery may be less resilient in an inward radial direction perpendicular to an axial direction of the tube member than an upper edge (e.g., 44a, 44a', 74a, 74a') of the outer periphery in the inward radial direction.
  • the piston member may be formed from an elastic member and may have a lower surface (e.g., 76, 176) facing the bottom section extending from the inner periphery to the outer periphery, said lower surface being defined on a plane perpendicular to an axial direction of the tube member and having at least one concentric bending portion (e.g., 75, 175) to provide a biasing force in an outward radial direction toward the container main body.
  • a lower surface e.g., 76, 176
  • the piston member may be formed from an elastic member and may have a lower surface (e.g., 76, 176) facing the bottom section extending from the inner periphery to the outer periphery, said lower surface being defined on a plane perpendicular to an axial direction of the tube member and having at least one concentric bending portion (e.g., 75, 175) to provide a biasing force in an outward radial direction toward the container main body.
  • the piston member may be slidable between the opening section and the bottom section.
  • the piston member may be fixed to no part of the fluid storage container in an axial direction of the tube member between the opening section and the bottom section.
  • the fluid storage container may further comprise a discharge outlet member (e.g., 20, 200, 700, 700') arranged on the container main body at the opening section and having a flow passage (e.g., 21, 201, 721) connected to the flow path of the tube member for flowing the fluid inside the container main body out to the outside.
  • An inflow valve structure e.g., 50, 500, 750, 950
  • the inflow valve structure may be arranged between the discharge outlet member and the tube member.
  • the discharge outlet member may comprise an outflow valve structure (e.g., 60, 600, 770) for flowing the fluid to the outside which is arranged downstream of the inflow valve structure.
  • the fluid storage container may further comprise a pumping mechanism (e.g., 24, 900) disposed between the inflow valve structure and the outflow valve structure in the flow passage.
  • the pumping mechanism may comprise a reciprocally movable linking pipe (e.g., 781, 782) and a piston (e.g., 783) coupled thereto in the flow passage for pumping the fluid from the tube member through the inflow valve structure out of the discharge outlet member through the outflow valve structure by reciprocal movement of the linking pipe and the piston.
  • the pumping mechanism may comprise an expansion part (e.g., 24) which is elastically deformable and restorable in the flow passage for pumping the fluid from the tube member through the inflow valve structure out of the discharge outlet member through the outflow valve structure by reciprocally deforming and restoring the expansion part.
  • an expansion part e.g., 24
  • the cylinder section of the container main body may have an upper edge part having cutouts (e.g., 113) extending toward its upper edge.
  • the present invention provides a piston member (e.g., 40, 40', 140, 70, 70', 170) configured to be fluid-tightly disposed between a cylinder member (e.g., 12, 12', 112) and a tube member (e.g., 30, 30', 30") provided inside the cylinder member, comprising: (i) an inner periphery (e.g., 47, 77) constituting a hole (e.g., 41, 71) through which the tube member is to be fluid-tightly inserted; and (ii) an outer periphery (e.g., 48, 78) which is to be fluid-tightly inserted in the cylinder member, said inner periphery and said outer periphery each having at least two fluid-tight portions, wherein the inner periphery has a length (e.g., L2) in an axial direction of the piston member, which is greater than a length (e.g., L1) of the outer periphery
  • the above embodiment further includes, but is not limited to, the following embodiments:
  • the at least two fluid-tight portions of the inner periphery may comprise an upper fluid-tight portion (e.g., 43, 73) arranged at an upper edge part of the inner periphery and a lower fluid-tight portion (e.g., 42, 72) arranged at a lower edge part of the inner periphery; and the at least two fluid-tight portions of the outer periphery may comprise an upper fluid-tight portion (e.g., 44a, 44a', 74a, 74a') arranged at an upper edge part of the outer periphery and a lower fluid-tight portion (e.g., 44b, 44b', 74b, 74b') arranged at a lower edge part of the outer periphery.
  • an upper fluid-tight portion e.g., 43, 73
  • a lower fluid-tight portion e.g., 42, 72
  • the at least two fluid-tight portions of the outer periphery may comprise an upper
  • Each of the upper and lower fluid-tight portions of the inner periphery and the upper and lower fluid-tight portions of the outer periphery may comprise at least one annular convex portion.
  • the at least one annular convex portion (e.g., 43, 73) constituting the upper fluid-tight portion of the inner periphery may more protrude inwardly than the at least one annular convex portion (e.g., 42, 72) constituting the lower fluid-tight portion of the inner periphery.
  • a lower edge (e.g., 44b, 44b', 74b, 74b') of the outer periphery is less resilient in an inward radial direction perpendicular to an axial direction of the piston member than an upper edge (e.g., 44a, 44a', 74a, 74a') of the outer periphery in the inward radial direction.
  • the piston member may be formed from an elastic member and has a lower surface (e.g., 76, 176) facing the bottom section extending from the inner periphery to an outer periphery, said lower surface being defined on a plane perpendicular to an axial direction of the piston member and having at least one concentric bending portion (e.g., 75, 175) to provide a biasing force in an outward radial direction.
  • a lower surface e.g., 76, 176
  • the piston member may be formed from an elastic member and has a lower surface (e.g., 76, 176) facing the bottom section extending from the inner periphery to an outer periphery, said lower surface being defined on a plane perpendicular to an axial direction of the piston member and having at least one concentric bending portion (e.g., 75, 175) to provide a biasing force in an outward radial direction.
  • any element used in an embodiment can interchangeably be used in another embodiment unless such a replacement is not feasible or causes adverse effect.
  • the present invention can equally be applied to apparatuses and methods.
  • FIG. 1 is a longitudinal sectional view of a fluid-storing container wherein the fluid-dispensing pump 1 according to Embodiment 1 of the present invention is applied.
  • Figure 1 is a vertical cross-sectional diagram which shows the fluid storage container which is related to Embodiment 1 of this invention.
  • Figures 2(a)-2(c) are explanation diagrams which show the piston member 40.
  • Figures 2(a), 2(b), and 2(c) are cross sectional view, top view, and bottom view, respectively.
  • Figures 3(a) and 3(b) are explanation diagrams which show the discharge opening member 20.
  • Figures 3(a) and 3(c) are cross sectional view and front view, respectively.
  • Figures 4(a)-4(c) are explanation diagrams which show the valve member 61 which forms the outflow valve structure 60.
  • Figures 4(a), 4(b), and 4(c) are cross sectional view, front view, and rear view, respectively.
  • Figures 5(a)-5(c) are explanation diagrams (cross sectional views) which show the outflow valve structure 60.
  • Figures 6(a)-6(c) are explanation diagrams which show the valve seat member 52 which forms the inflow valve structure 50.
  • Figures 6(a), 6(b), and 6(c) are cross sectional view, top view, and bottom view, respectively.
  • Figures 7(a)-7(c) are explanation diagrams which show the valve member 51 which forms the inflow valve structure 50.
  • Figures 7(a), 7(b), and 7(c) are cross sectional view, top view, and bottom view, respectively.
  • Figures 8(a) and 8(b) are explanation diagrams (cross sectional views) which show the inflow valve structure 50.
  • Figure 9 is a vertical cross-sectional view of the fluid storage container which shows the state of discharging fluid that has been stored within the container main body 10 for the fluid storage container which is related to Embodiment 1.
  • Figure 10 is a vertical cross-sectional view of the fluid storage container which shows the state of discharging fluid that has been stored within the container main body 10 for the fluid storage container which is related to Embodiment 1.
  • Figure 11 is a vertical cross-sectional view of the fluid storage container which shows the state of discharging fluid that has been stored within the container main body 10 for the fluid storage container which is related to Embodiment 1.
  • Figure 12 is a vertical cross-sectional view which shows the fluid storage container which is related to the Embodiment 2 of this invention.
  • Figures 13(a) and 13(b) are explanation diagrams which show the discharge opening outlet member 200.
  • Figures 13(a) and 13(b) are cross sectional view and front view, respectively.
  • Figures 14(a)-14(c) are explanation diagrams which show the valve seat member 640 which forms the outflow valve structure 600.
  • Figures 14(a), 14(b), and 14(c) are cross sectional view, front view, and rear view, respectively.
  • Figures 15(a)-15(c) are explanation diagrams which show the valve member 630 which forms the outflow valve structure 600.
  • Figures 15(a), 15(b), and 15(c) are cross sectional view, front view, and rear view, respectively.
  • Figures 16(a)-16(c) are explanation diagrams (cross sectional views) which show the outflow valve structure 600.
  • Figures 17(a)-17(c) are explanation diagrams which show the valve seat member 540 which forms the inflow valve structure 500.
  • Figures 17(a), 17(b), and 17 (c) are cross sectional view, top view, and bottom view, respectively.
  • Figures 18(a)-18(c) are explanation diagrams which show the valve member 530 which forms the inflow valve structure 500.
  • Figures 18(a), 18(b), and 18 (c) are cross sectional view, top view, and bottom view, respectively.
  • Figures 19(a) and 19(b) are explanation diagrams (cross sectional views) which show the inflow valve structure 500.
  • Figure 20 is a vertical cross-sectional view which shows a fluid storage container which is related to Embodiment 3 of this invention.
  • Figure 21 is a vertical cross-sectional view of the discharge outlet member 700 including the fluid discharge pump 900 which shows the conditions for discharging the fluid that was stored within the container main body 10' which forms the fluid storage container which is related to Embodiment 3.
  • Figure 22 is a vertical cross-sectional view of the discharge outlet member 700 including the fluid discharge pump 900 which shows the conditions for discharging the fluid that was stored within the container main body 10 which forms the fluid storage container which is related to Embodiment 3.
  • Figure 23 is a vertical cross-sectional view of the discharge outlet member 700 including the fluid discharge pump 900 which shows the conditions for discharging the fluid that was stored within the container main body 10' which forms the fluid storage container which is related to Embodiment 3.
  • Figure 24 is a vertical cross-sectional view of the fluid storage container which shows the conditions for discharging fluid there was stored within the container main body 10' for the fluid storage container which is related to Embodiment 3.
  • Figure 25 is a vertical cross-sectional view of the fluid storage container which shows the conditions for discharging fluid there was stored within the container main body 10' for the fluid storage container which is related to Embodiment 3.
  • Figure 26 is a vertical cross-sectional view of the fluid storage container which shows the conditions for discharging fluid there was stored within the container main body 10' for the fluid storage container which is related to Embodiment 3.
  • Figure 27 is a vertical cross-sectional view which shows the fluid storage container which is related to Embodiment 4 of this invention.
  • Figures 28(a)-28(c) are explanation diagrams which show the piston member 70.
  • Figures 28(a), 28(b), and 28(c) are cross sectional view, top view, and bottom view, respectively.
  • Figure 29 is an explanation diagram which shows the base of the container main part 10 when there is slanting of the base of the container main body 100 and the base surface of piston member 170.
  • Figure 30 is an explanation diagram which shows the state of filling the fluid and the container main body 104 a fluid storage container which is related to Embodiment 5 of this invention.
  • Figure 31 is an explanation diagram which shows the fluid storage container which is assembled by selecting the container main body 100 and the piston member 70.
  • Figure 32 is an explanation diagram which shows a cross section of the piston member 40'.
  • Figure 33 is an explanation diagram which shows a cross section of the piston member 70'.
  • FIG. 1 is a vertical cross-sectional view which shows the fluid storage container which is related to Embodiment 1 of this invention.
  • This fluid storage container is used as a container for cosmetics for storing gel such as hair gel or cleansing gel which is used in the beauty field or crème products such as nourishing crème or massage cream or for liquids such as face lotion.
  • this fluid storage container it is permissible to use this fluid storage container as a container of general drugs or solvents or food products.
  • highly viscous liquids or semifluids or sols are called fluids which contain ordinary fluids such as jelly-shaped solidified gels or crème-shaped substances.
  • This fluid storage container provides an opening section 11 on top, a cylinder section 12 which is formed on the side surface, and there is provided a container main body 10 which stores the fluid inside, a discharge outlet member 20 which is established at the opening outlets section 11 which is formed on the container main body 10, and a tube member 30 which has a flow path 31 which reaches the discharge outlet member 20 of the base of the container main body 10 and there is provided a piston member 40 which moves inside the cylinder section 12 in the container main body 10.
  • a lower end 32 of the tube member 30 is disposed in the vicinity of (can be in contact with) a bottom section 15 of the container main body 10.
  • the lower end 32 of the tube member 10 has an angled edge so that the fluid in the container main body 10 can flow into the tube member 10.
  • this fluid storage container provides, on the inside of the discharge outlet member 20, an inflow valve structure 50 which flows in the fluid that is stored in the container main body 10 which is explained in detail later, and an outflow valve structure 60 which flows out to the outside the fluid that flowed in to the inflow valve structure 50 which is explained in detail later.
  • Figures 2(a)-2(c) are explanation diagrams which explain the piston member 40.
  • Figure 2 (a) is a vertical cross-sectional view of the piston member 40 and Figure 2(b) is a front view.
  • Figure 2(c) is a base surface view.
  • a hole 41 which passes through a tube member 30 is formed on the piston member 40.
  • a liquid tight part 44a/44b of convex shape which is connected with the cylinder section 12 of the container main body 10 is formed on the upper and lower parts of the outer circumferential surface of this piston member 40.
  • the liquid tight part 44a/44b which is formed on the upper part and the lower part is arranged at locations that are separated by fixed distances.
  • the liquid tight part 42 of convex shape which makes contact with the tube member 30 is formed on the lower parts of the inside of the hole 41 of this piston member 40, and the liquid tight part 42 of convex shape which makes contact with the tube member 30 is formed.
  • the upper part of the liquid tight part 43 projects inward more than the liquid tight part 42 of the lower part.
  • liquid tight parts 42, 43, 44a, and 44b which are formed on the piston member 40 are not limited to being formed at the top part or the bottom part, and may be formed at the center, and in addition, it is permissible to form a plurality of two or more.
  • the liquid tight parts 43, 44a, and 44b which are formed on the piston member are not limited to being formed at locations which respectively correspond.
  • the liquid tight parts 42 and 43 are formed on the inner periphery 47 and inwardly project.
  • the liquid tight parts 44a and 44b are formed on the outer periphery 48 and outwardly project.
  • Each liquid tight part may comprise on its tip at least one annular convex portion which projects in a direction substantially or nearly perpendicular to an axial direction of the piston member 40.
  • Each convex portion may have a symmetrical cross section with respect to a direction perpendicular to an axial direction of the piston member, and may have a semicircular, triangular, polygonal, U-shaped, or V-shaped cross section.
  • the contact area of the convex portion against an inner circumferential surface of the cylinder section or an outer circumferential surface of the tube member can remain small (line contact) even if pressure is exerted toward the circumferential surface, so that a seal between the convex portion and the circumferential surface can become tight (thereby accomplishing high liquidtightness) while the piston member can slide smoothly against the inner circumferential surface of the cylinder section and the outer circumferential surface of the tube member.
  • the convex portion may have a protrusion height of 0.01-2.0 mm, typically 0.1-1.0 mm.
  • the piston member may be made of polypropylene or polyethylene, or resin such as silicone rubber.
  • liquidtightness performance can be doubled while a contact area of the piston member and the inner circumferential surface of the cylinder section remains small.
  • the size or protrusion height of the convex portion of the liquid tight part 43 may be 1.1 to 3 times (e.g., 1.3 to 2 times) greater than the convex portion of the liquid tight part 42 so that a seal at the liquid tight part 43 can be enhanced while movability of the piston member remains adequate. Even if a leak occurs at the liquid tight part 42, a leak can effectively be prevented at the liquid tight part 43.
  • liquid tight part 43 if the height of the convex portion of the liquid tight part 43 is higher than that of the liquid tight part 42, a seal at the liquid tight part 42 can also be enhanced (e.g., when one end of a free cylinder is forced to expand, the other end of the cylinder tends to contract).
  • the liquid tight parts 42, 43, 44a, and 44b can have different convex portions in terms of the number of the convex portions, the cross sectional shapes, the height of the convex portions, etc.
  • the outer periphery 48 may have an arched vertical cross section as shown in Figure 2(a).
  • the liquid tight parts 44a and 44b each comprise two convex portions.
  • the liquid tight parts 44a' and 44b' can each be constituted by a single convex portion.
  • the number or size of convex portion of each liquid tight part (42, 43, 44a, 44b, 44a', 44b') can be different.
  • the liquid tight part 44b can have two convex portions
  • the liquid tight part 44a can have one convex portion which is larger than the convex portion of the liquid tight part 44b, and vice versa.
  • the inner periphery 47 may have a length L2 which is greater than a length L1 of the outer periphery 48, e.g., by about 5% to about 50% (including about 10% to about 30%) of L1, in the axial direction of the piston member 40.
  • the length L1 of the outer periphery 48 may be smaller than a diameter D of the outer periphery 48. In an embodiment, the length L1 of the outer periphery 48 may be less than 50% of the diameter D of the outer periphery 48.
  • Figures 3(a) and 3(b) are explanation diagrams which show the discharge outlet member 20.
  • Figure 3(a) is a vertical cross-sectional view of the discharge outlet member 20, and
  • Figure 3(b) is a left side surface view.
  • the discharge outlet member 20 is formed from an elastic member which has a flow passage 21 for flowing out to the outside fluid that was stored within the container main body 10.
  • a male thread 22 is formed at the side of the container main body 10 of the flow path 21 at this discharge outlet member 20. This male thread 22 threads together the male thread 14 which was formed on the outside of the opening 11 of the container main body 10.
  • a plurality of ribs is formed at the end of the discharge side for the fluid in the flow path 21 at this discharge outlet member 20.
  • This rib part 23 forms one parts of the outflow valve structure 60, and supports the movement of the valve member 61 which will be explained in detail later.
  • Figures 4(a)-4(c) are explanation diagrams which show the valve member 61 which forms the outflow valve structure 60.
  • Figure 4(a) is a vertical cross-sectional view of the valve member 61 and
  • Figure 4 (b) is a left side surface view.
  • Figure 4 (c) is a right side surface view.
  • the outer circumferential surface of the valve member 61 is formed from an elastic member which provides a bowl-shaped valve 611 which is contactable with the inner surface of the flow path 21 at the discharge outlet member 20, an axis 612 which is established from the approximate center of the valve 611, and a latch which is positioned on the reverse side with the valve 611 of the axis 612.
  • the valve 611 is closely formed. Because of this, when there is pressure to the left side from the right side, the outer circumferential surface contracts, and there is separation from the inner surface of the flow path 21. On the other hand, when the pressure from the right side to the left side is eliminated, or when the pressure to the right side from the left side is biased, this outer circumferential surface is restored or expands, and makes contact with the inner surface of the flow path 21.
  • the axis 612 is formed to such a shape as to be slidable onto the rib 23 which is formed on the discharge outlet member 20.
  • the sliding of the rib 23 of this axis 612 is controlled by the valve 611 and latch 613.
  • Figures 5(a)-5(c) are explanation diagrams which show the outflow valve structure 60. Among these views, Figure 5(a) shows a closed state for the outflow valve structure 60, Figure 5 (b) shows a release condition, and Figure 5 (c) shows the state while returning to a closed condition from a released condition.
  • the outflow valve structure 60 is formed from the rib 23 at the valve member 61 at the discharge outlet member 20.
  • this outflow valve structure 60 spontaneously releases, as shown in Figure 5(a), the outer circumferential surface of the valve 611 for the valve member 61 becomes closed which makes contact with the inner surface of the flow path 21 at the discharge outlet member 20.
  • the outflow valve structure 60 prohibits the passage of fluid between the inside and outside when in a closed state.
  • valve 611 of the valve member 61 which forms this outflow valve structure it is not necessary for the valve 611 of the valve member 61 which forms this outflow valve structure to be positioned on the discharge side from the rib 23, and this valve 611 may be positioned on the inside from the rib 23.
  • Figures 6(a)-6(c) are explanation diagrams which show the valve seat member which forms the inflow valve structure 50.
  • Figure 6(a) is a vertical cross-sectional view of the valve seat member 52 and Figure 6(b) is a top surface view.
  • Figure 6(c) is a base surface view.
  • the valve seat member 52 provides a join part 521 for securing to the discharge outlet member 20 by sandwiching between the container main body 10 and the discharge outlet member 20, a tubular-shaped inner wall 522, a plurality of ribs 523 which slidably support a sliding part 513 (reference Figures 7(a)-7(c)) on the valve member 51 which is explained later in detail, and a join 524 which connects with the upper end of the tube member 30.
  • Figures 7(a)-7(c) are explanation diagrams which show the valve member 51 which forms the inflow valve structure 50.
  • Figure 7(a) is a vertical cross-sectional view of the valve member 51 and Figure 7(b) is a top surface view.
  • Figure 7(c) is a base surface view.
  • the outer circumferential surface of the valve member 51 is formed from an elastic member which provides a bowl-shaped valve 511 which is connectable with the inner wall 522 of the valve seat member 52, an axis 512 which is placed from approximately the center of the valve 511, and a slide part 513 which slidably supports the rib 523 of the valve seat member 52 by being positioned at approximately the center of the axis 512.
  • the valve 511 is closely formed. Because of this, when the pressure in the upward direction from the downward direction is biased, the outer circumferential surface contracts, and there is separation from the inner wall 522 of the valve seat member 52. On the other hand, when the pressure is upward from downward is eliminated, or the pressure downward from upward is biased, the outer circumferential surface is restored or expands, and makes contact with the inner wall 522 of the valve seat member 52.
  • the slide part 513 is formed as a slidable shape with the rib 523 which is formed on the valve seat member 52. Sliding on the rib 523 of this slide part 513 is controlled by the top end and bottom end of the slide part 513.
  • Figures 8(a) and 8(b) are explanation diagrams which show the inflow valve structure 50. Among these diagrams, Figure 8(a) shows the closed condition for the inflow valve structure 50, and Figure 8(b) shows its open state.
  • the inflow valve structure 50 is formed by the valve seat member 52 and the valve member 51.
  • the outer circumferential surface of the valve 511 on the valve member 51 enters a closed state which makes contact with the inner wall 522 of the valve seat member 52.
  • the inflow valve structure 50 prohibits the flow of fluid between the outside and the inside of the container main body 10 in this closed condition.
  • Figures 9-11 are vertical cross-sectional views of the fluid storage container which shows the states during which there is discharge of the fluid which was stored inside the container main body 10 for this kind of fluid storage container.
  • the inflow valve structure 50 receives a pressure directed to the outside from the inside of the container main body 10. From this, the inflow valve structure 50 opens, and the fluid that was stored in this space that was formed between the base of the container main body 10 and the piston member 40 by means of the flow path 31 of the tube member 30 flows in to the inside of the flow path 21 at the discharge outlet member 20.
  • the outflow valve structure 60 receives a pressure directed to the inside from the outside.
  • the outflow valve structure 60 moves from an open state to a closed state. At this time, because inside the flow path 21 at the discharge outlet member 20 experiences a reduction in pressure, it becomes possible to drag into the inside of the flow path 21 at the discharge outlet member 20 the fluid that remained in the vicinity of the outflow valve structure 60.
  • the cylinder section 12 may have a slightly tapered inner wall having a narrower inner diameter on its top than at its bottom, so that the piston member 40 can move more easily toward its bottom than toward its top.
  • the bottom section may be formed separately from the cylinder section and then attached to the bottom of the cylinder section (instead of integral formation with the cylinder section), so that the cylinder section having the tapered inner wall can easily be made.
  • the piston member as with a conventional fluid storage container does not experience the gravity of the fluid, and there is no problem of the fluid from the piston member leaking and flowing out.
  • Figure 12 is a vertical cross-sectional diagram which shows a fluid storage container related to Embodiment 2 of this invention.
  • the fluid storage container that is related to Embodiment 2 of this invention substitutes for the discharge outlet member 20, the inflow valve structured 50, and the outflow valve structure 60 for the fluid storage container that is related to Embodiment 1, the discharge outlet member 200, the inflow valve structure 500, and the outflow valve structure 600. These substituted elements are what make Embodiment 2 different from Embodiment 1.
  • Figure 13 is an explanation diagram which shows the discharge outlet member 200.
  • Figure 13(a) is a vertical cross-sectional diagram of the discharge outlet member 200
  • Figure 13 (b) is the left side surface view.
  • the discharge outlet member 200 is formed from an elastic number which has the flow path 201 for flowing out to the outside fluid that was stored in the container main body 10.
  • a male thread 202 is formed at the side of the container main body 10 of the flow path 201 at this discharge outlet member 200. This male thread 202 threads together with the male thread 14 which was formed on the outside of the opening 11 of the container main body 10.
  • to join 203 which joins with the valve seat member 640 which forms the inflow valve structure 600 which is later described in detail is formed at the discharge and the fluid of the flow path 201 at this discharge outlet member 200.
  • an expansion part 204 is formed between the male thread 202 and the join 203 of the flow path 201 at this discharge outlet member 200. This expansion element 204 is closely formed. From this, there is contraction of the width of the flow path 201 from outside pressure, and it is possible to reduce the pressure inside the flow path 21 by the elastic restoring force the discharge outlet member 21 when eliminating the pressure from the outside.
  • the outflow valve structure 600 is formed by the valve seat member 640 and the valve member 630.
  • Figure 14 is an explanation diagram which shows the valve seat member 640 which forms the outflow valve structure 600.
  • Figure 14(a) is a vertical cross-sectional view of the valve member 640
  • Figure 14 (b) is its left side surface view
  • Figure 14 (c) is its right side surface view.
  • the valve seat member 640 which provides a hole 641 is formed with a shape that corresponds with the valve 631 of the valve member 630 which is later explained in detail, and a hollow tubular-shaped join which joins with the support 634 of the valve member 630, and a convex element 643 for connecting with the join 203 of the discharge outlet member 200.
  • the valve member 630 provides a valve 631 which is connectable with the outline of the hole 641 of the valve seat member 640, a support 634 which joins with the join 642 of the valve seat member 640, and 4 linking elements 632 which link together the valve 631 and the support 634.
  • These 4 linking elements respectively, have good elasticity and flexibility from a pair of bending elements 633.
  • Figure 16 is an explanation diagram which shows the outflow valve structure 600.
  • Figure 16(a) shows the close state of the outflow valve structure 600
  • Figure 16 (b) shows the open state
  • Figure 16 (c) shows the state while returning to a closed state from an open state.
  • the outflow valve structured 600 is formed from the valve seat member 640 and the valve member 630.
  • this outflow valve structure 600 spontaneously releases, as shown in Figure 16 (a), the valve 631 for the valve member 630 becomes closed which makes a connection with the outline of the hole 641 at the valve seat member 640.
  • the outflow valve structure 600 does not allow flow of the fluid between the inside and the outside in this closed state.
  • valve seat member 640 which forms the outflow valve structure and the discharge outlet member 200.
  • the valve seat member 640 which forms the outflow valve structure and the discharge outlet member 200.
  • the flow in structure 500 is formed by the valve seat member 540 and the valve member 530.
  • Figure 17 is an explanation diagram which shows the valve seat member 540 which forms the flow in structure 500.
  • Figure 17(a) is a vertical cross-sectional diagram of the valve seat member 540 and Figure 17 (b) is the top surface view.
  • Figure 17 (c) is a base surface view.
  • the valve seat member 540 provides a hole 541 which is formed as a shape which corresponds to the valve 531 of the valve member 530 which is later described in detail, a hollow shaped tubular join element 542 for joining with the support 534 of the valve member 530, the join element 543 for fixing to the discharge outlet member 200 and sandwiching between the container main body 10 and the discharge outlet member 200, and the join element 544 which connects with the
  • Figure 18 is an explanation diagram which shows the valve member 530 which forms the inflow valve structure 500.
  • Figure 18(a) is a vertical cross-sectional diagram of the valve member 530 and Figure 18 (b) is a top surface view.
  • Figure 18 (c) is a base surface view.
  • Valve member 530 provides the valve 531 which can make contact with the outline of the hole 541 of the valve seat member 540 and support 534 which joins with the join element 542 of the valve seat member 540, and the four linking elements 532 which link the valve 531 and the support 534. These four linking elements 532 have good elasticity and flexibility from a pair of bending elements 533.
  • Figure 19 is an explanation diagram which shows the inflow valve structure 500. Among these diagrams, Figure 19 (a) shows the closed state for the inflow valve structure 500 and Figure 19 (b) shows the closed state.
  • the inflow valve structure 500 is formed by the valve seat member 540 and the valve member 530.
  • the valve 531 on the valve member 530 becomes closed making contact with the outline of the whole 541 of the valve seat member 540.
  • the inflow valve structured 500 in this closed state, prohibits flow of fluid between the inside and the outside.
  • valve 531 of the valve member 530 separates from the hole 541 on the valve member 540 until controlled by the linking elements 532. Because of this, there is the possibility for the inflow valve structure 500 to have flow of fluid between the inside in the outside in the open state.
  • the inflow valve structure 500 becomes open, and the fluid that was stored in the space that was formed between the base of the container main body 10 and a piston member 40 by means of the flow path 31 of the tube member 30 flows into the inside of the flow passage 201 at the discharge outlet member 200.
  • the outflow valve structure 600 receives a pressure to the inside from the outside. From this, the outflow valve structure 60 moves to a close condition from an open condition. At this time, because within the flow passage 201 at the discharge outlet member 200 there is a reduction in pressure, it becomes possible to drag the fluid which remains in the vicinity of the outflow valve structure 600 to the inside of the flow path 201 at the discharge outlet member 200. The fluid that was stored in the space that was formed between the base of the container main body 10 and a piston member 40 is reduced. Because of this, the piston member 40 moves in the direction of the base of the container main body 10. Following this, the space that is formed between the opening 11 of the main container 10 and a piston member 40 expands. Because of this, air enters from the aeration hole 13 which was drilled in the container main body 10.
  • the piston member does not receive the gravity of the fluid, and there results no problem with the fluid from the piston member leaking and flowing out.
  • the fluid storage container may be formed so as not to provide inflow valve structures 50, 500 for the fluid storage container which is related to Embodiment 2 and Embodiment 1 both described above.
  • the outflow valve structure 60 or the outflow valve structure 600 there is received pressure from the inside to the outside. From this, the outflow valve structure 60 or the outflow valve structure 600 becomes open, and the fluid that remained in the flow path 20 of the discharge outlet member 20 flows out to the outside.
  • Figure 20 is a vertical cross-sectional diagram which shows the fluid storage container which is related to Embodiment 3 of this invention.
  • Embodiment 3 of this invention there are substitutions for the discharge outlet member 20, the inflow valve structure 50, and the outflow valve structure 60 which formed the fluid storage container which is related to Embodiment 1, namely, the discharge outlet member 700, the fluid discharge pump 900, the nozzle head 800, and the outside cover 810. These are the only differences between Embodiment 1 and Embodiment 3.
  • the discharge outlet member 700 with the fluid discharge pump 900 which forms the fluid storage container which is related to Embodiment 3 is established on the inside of the open part 11' of the container main body 10'.
  • the piston member 40 is installed inside the cylinder section 12'.
  • hollow 1st and 2nd linked pipes 781 and 782 which are linked and fixed mutually which form a linking pipe for lowering the piston 783 by transmitting to the piston 783 a pressure which is imparted to the nozzle head 800 by linking the cylinder 723 which the lower terminal opening connects with the tube member 30', and by linking the restorable and moveable piston 783 within the cylinder 723, and the nozzle head 800 and the piston 783, and there is provided also a coil spring 724 which is established on the outer circumference of the 1st and 2nd linked pipes 781 and 782 for biasing in the direction of raising the piston 783, a flow in structure 750 for flowing in to the inside of the cylinder 723 the fluid that
  • the inflow valve structure 750 is formed from a lower end opening which is formed at the lower end of the cylinder 723, from the valve which is formed into a shape which corresponds with the lower end opening of the cylinder 723, from the support which joins with the cylinder 723 and from the valve member 751 of resin manufacture which has 4 linking elements which have elasticity and flexibility which link the valve and the support.
  • the inflow valve structure 750 when there is pressure added inside the cylinder 723, along with the valve, through elasticity or flexibility of the linked elements closes the lower end opening of the cylinder 723 by making contact with the lower end opening of the cylinder 723, and when the pressure is reduced inside the cylinder 723, the valve through elasticity or flexibility of the linked elements opens the lower end opening of the cylinder 723 by separating from the lower end opening of the cylinder 723.
  • the intermediate valve structure 760 is formed by the piston 783 and the 2nd linked pipe 782.
  • the piston 783 is established on the 2nd linked pipe 782 so as to be slidable between the connector with the 1st linked pipe 78 in the 2nd linked pipe 782 and the lower end of the 2nd linked pipe 782.
  • the outflow valve structure 770 is formed by a resin manufactured valve member 771 which has a plurality of supports which are established from bowl-shaped valves which are formed as shapes which correspond to the upper end opening of the 1st linked pipe 782 and the upper end opening of the 1st linked said 782 and from valves.
  • Figures 21-23 are vertical cross-sectional diagrams of the discharge outlet member 700 with the fluid discharge pump 900 which show the discharging conditions of the fluid that is stored within the container main body 10' which forms the fluid storage container which is related to Embodiment 3.
  • valve structure 750 when in a condition where there is spontaneous release, the valve structure 750, the intermediate valve structure 760 and the outflow valve structure 770 become closed.
  • the upper end of the piston 783 on the intermediate valve structure 760 opens the opening 791 by moving to a position which makes contact with the join of the 1st linked pipe on the 2nd linked pipe. From this, the fluid which was stored inside the space that was formed between the lower end opening of the cylinder 823 and the piston a role 783 flows inside the 1st and 2nd linked pipes 781 and 782. In this way, when there is flow in to the inside of the 1st and 2nd linked pipes 781 and 782, inside the 1st and 2nd linked pipes 781 and 782 experience added pressure.
  • the inside of the 1st and 2nd linked pipes 781 and 782 does not experience any increased pressure.
  • the plan maximum surface area of the bowl-shaped valve in the outflow valve structure 770 expands, and the upper end opening of the 1st linked pipe closes.
  • the value, through the elasticity or flexibility of the link with the inflow valve structure 750 closes the lower end opening of the cylinder 723 by separating from the lower end opening of the cylinder 723.
  • the fluid which was stored within the container main body 10' between the piston member 40 and the bottom section 15' flows into the inside of the cylinder 723 through the flow path 31' of the tube member 30' via the lower end 32'.
  • Figures 24-26 are vertical cross-sectional diagrams of the fluid storage container which shows the condition for discharge in the fluid that was stored inside the container main body 10 for the fluid storage container which is related to Embodiment 3.
  • the piston member does not receive gravity of the fluid as with conventional fluid storage containers, and there is no generation of problems such as fluid leakage from the piston member.
  • Figure 27 is a vertical cross-sectional diagram which shows the fluid storage container which is related to Embodiment 4 of this invention.
  • the fluid storage container which is related to Embodiment 4 of this invention provides the discharge outlet member 700' in place of the discharge outlet member 700 which formed the fluid storage container which is related to Embodiment 3, and it is at this point where the Embodiment 4 differs from the Embodiment 3.
  • the discharge outlet member 700' including the fluid discharge pump 900 which forms the fluid storage container which is related to Embodiment 4 substitutes for the cylinder 723 and the inflow valve structure 750 in the discharge outlet member 700 which formed the fluid storage container which is related to Embodiment 3, and there is provided the cylinder 923 and the inflow valve structure 950.
  • a plurality of ribs is formed in the vicinity of the lower end opening of the cylinder 923.
  • the inflow valve structure 950 is formed from the rib part which was formed in the cylinder 923 and the lower opening and the valve member 952.
  • the valve member 952 is formed from an elastic member which provides an approximate bowl-shaped valve whose outer circumferential surface can connect with the lower end opening of the cylinder 923, an axis which is established from the approximate center of the valve, and a slidable part which supports slidably the rib part of the cylinder 923 by being located at the approximate center of the axis.
  • the valve in the valve member 952 is closely formed. Because of this, the outer circumferential surface contracts when there is a biasing pressure from the bottom to the top, and there is separation from the lower end opening of the cylinder 923. On the other hand, when the pressure from the bottom to the top is cancelled, or the pressure is biased from the top to the bottom, this outer circumferential surface is restored or expands, and there is a connection with the lower end opening of the cylinder 923.
  • the slidable part is formed to give a slidable shape to the rib which is formed on the cylinder 923.
  • the sliding motion for the rib of this slidable part is controlled by the lower and upper ends of the slidable part.
  • the tube member 30" has a slightly different configuration than the tube member 30' in the previous embodiment.
  • the tube member 30', 30" are integrally formed with the cylinder 723, 923, respectively.
  • the flow pass 31" is formed inside the tube member 30" which has the lower end 32", as in the previous embodiment.
  • the inflow valve structure 950 When there is cancellation of the pressure on the nozzle head 800, along with the outflow valve structure 770 entering a closed state, the inflow valve structure 950 enters an open state, and the fluid that was stored inside the space that was formed between the base of the container main body 10' and the piston member 40 flows in to the inside of the cylinder in 923 by means of the tube member 30". From this, inside the flow path 31" in the tube member 30", and inside the space that is formed between the base of the container main body 10' in the piston member 40 experiences reduced pressure. Because of this, the piston member 40 moves in the direction of the base of the container main body 10' .
  • Figures 28(a)-28(c) are explanation diagrams which show the piston member 70.
  • Figure 28 (a) is a vertical cross-sectional diagram of the piston member 70 and Figure 28 (b) is a top surface view.
  • Figure 28 (c) is a base surface view.
  • the piston member 70 in the same way as with the piston member 40, there is formed a hole 70 which passes through the tube member 30".
  • the liquid tight parts 74a and 74b are formed on the upper and lower parts of the outer periphery 78 (outer circumferential surface) of this piston member 70 and are convex shaped which connect with the cylinder 12 of the container main body 10'.
  • the liquid tight part 73 of this upper part projects from the liquid tight part 72 of the bottom part.
  • the liquid tight parts 72, 73, 74a, and 74b correspond to the liquid tight parts 42, 43, 44a, and 44b, respectively, and can have the configurations described with regard to the liquid tight parts 42, 43, 44a, and 44b.
  • Figure 33 shows a different embodiment wherein the piston member 70' has the liquid tight parts 74a' and 74b' each constituted by a single convex portion.
  • This piston member 70 with a surface 76 perpendicular to the moving direction within the cylinder part 12 of the container main body 10', is formed from elastic material for which a concentric circle shaped bending part 75 is formed concentrically with the outer periphery. Because of the surface 76 is formed at a lower end of the piston member 70, the lower end is less resilient than the upper end. However, in this embodiment, due to the bending part 75, the lower end can be effectively resilient.
  • the bending part 75 has a biasing force in the direction of the outer circumference, and even when there are changes in shape of the cylinder part 12 of the container main body 10', it is possible to make liquid tight contact with the wall surface of the cylinder part 12 corresponding to these changes.
  • Figure 29 is an explanation diagram which shows the base part of the container main body 100 when the base part of the container main body 100 and the base surface of the piston member 170 are slanted.
  • the base part of the container main body 100 which is shown in Figure 29 is formed in an approximate hemispherical shape.
  • an approximate hemispherical shape for the base part in this way, fluid remains by being concentrated at the center.
  • a concentric bending part 175 formed in a surface 176, and a liquid tight part 74b below in a shape which is contactable at the same time with the base of the container main body 100, it becomes possible to lower the residual amount of the fluid between the container main body 100 and the piston member 170.
  • Figure 30 for the fluid storage container which is related to Embodiment 5 of this invention, is an explanation diagram which shows the state of filling a fluid in the container main body 100 which has an upper end port 111 and a lower part 110 which is constituted by a cylinder section 112, and a bottom section 115.
  • Embodiment 5 With the fluid storage container which is related to Embodiment 5 there is provided a container main body 100 in place of the container main body 10 in the fluid storage container which is related to Embodiment 4. This is the point of difference between Embodiment 5 and Embodiment 4.
  • the container main body 100 in this fluid storage container provides a container with a lower part 110 of base tubular shape and a container upper part which is joinable at the upper end part 111 of the container lower part 110. Because of this, there is removed from the container lower part 110 of the container upper part 120 and the piston member 140, and it is possible to easily fill with fluid.
  • a plurality of aeration holes are drilled for drawing in from the outside air to this space which is formed between the opening part 121 of the container main body 100 and the piston member 140.
  • a male spring 124 is formed on the outer circumference of the opening part 121 in order to join with the fluid discharge pump 900.
  • the container lower part 110 has the cylinder part 112 for sliding the end 111 and the piston member so as to join with the container upper end 120.
  • a plurality of notches 113 is formed on the inside of the tube of this end 111. Because of this, as shown in Figure 30, at the container lower end 110, and when the piston member 140 is held, it becomes possible to flow to the outside of the container lower part 110 by passage through the notches 113 air that has been entered between the fluid that filled the container lower part 110 and the piston member 140.
  • 113 is formed at the container lower part 110 but all the peripheral surfaces may be slanted with respect to the cylinder part 112 from the end part 111.
  • Figure 31 is an explanation diagram which shows the fluid storage container that is assembled by selecting the container main body 100 and the piston member 70.
  • a fluid storage container as characterized in Item 1 wherein there is provided a valve structure on the inside of the previously described discharge outlet member.
  • a fluid storage container as characterized in any one of Items 1-4 wherein the previously described piston member is formed from an elastic member whose concentric bending section is formed with the outer circumference on a perpendicular plane with the movement direction within the piston section of the previously described container main body, and the piston has a biasing force in the outer circumferential direction from the center.
  • a fluid storage container with an opening inlet section formed on the top and a cylinder formed on the side surface wherein there is provided a flow discharge pump which from pressure on a nozzle head which is arranged on the opening outlet section which is formed on the previously described container main body causes flow out from the previously described nozzle head fluid which was stored in the previously mentioned container main body, and having a flow path which reaches the previously described fluid discharge pump from the base of the previously described container main body, there is provided a tube member which causes flow of fluid which has been stored in the previously described container main body, and there is storage of fluid in the space that is formed between the base of the previously described container main body and the previously described piston member.
  • a fluid storage container as characterized as in any one of Items 1-7 wherein the previously described piston member is a convex section which makes contact with the previously described tube member at the hole section.
  • Item 3 and Item 4 because there is provided a fluid valve structure which enters into a flow passage fluid that was stored in the container main body, and an output valve structure which causes output flow to the outside of fluid that was entered by the inflow valve structure, along with controlling the output to the outside of the fluid that was stored within the container main body, it becomes possible to prevent the entry of outside air in the space that is formed between the base of the container main body and the piston member.
  • the piston member for the surface perpendicular to the movement direction within the cylinder of the container main body, is formed from an elastic member whose concentric ending section is formed with the outer circumference and because there is a biasing force in the outer circumferential direction from the center, even when there are changes in the cylinder's diameter it is possible to maintain liquid density.
  • the cylinder section in the container main body has a taper shape which results from a taper oriented to the direction of the discharge of the member, it is possible to prevent the movement of the piston member in the direction of the discharge outlet member, and it is possible to prevent movement of the piston member in the direction of the discharge outlet member in the container main body.
EP06113308A 2006-04-28 2006-04-28 Recipient de stockage de fluide avec piston Withdrawn EP1849528A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06113308A EP1849528A1 (fr) 2006-04-28 2006-04-28 Recipient de stockage de fluide avec piston

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Application Number Priority Date Filing Date Title
EP06113308A EP1849528A1 (fr) 2006-04-28 2006-04-28 Recipient de stockage de fluide avec piston

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GB2474316A (en) * 2009-10-09 2011-04-13 Kuo-Chung Fang Fluid dispenser with spout blocking arrangement
CN102259721A (zh) * 2011-07-22 2011-11-30 孙德善 手控式液体出口阀门
GB2508862A (en) * 2012-12-13 2014-06-18 Tlc Design Ltd Piston incorporating valve controlling flow of fluid from storage cylinder
ITMI20132062A1 (it) * 2013-12-11 2015-06-12 L4Belle S R L Tappo erogatore con chiusura automatica di una luce di erogazione di un fluido
US9403632B1 (en) * 2013-06-17 2016-08-02 José Luis Marrero Ramos Fluid dispenser
WO2018011740A1 (fr) * 2016-07-12 2018-01-18 Aria Soluzione Gmbh Dispositif de pompage pour un récipient à fluide
JP7318433B2 (ja) 2019-09-06 2023-08-01 トヨタ紡織株式会社 液体塗布モジュール
JP7322630B2 (ja) 2019-09-24 2023-08-08 トヨタ紡織株式会社 乗物用内装材の製造方法

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DE10130965A1 (de) * 2001-06-27 2003-01-16 Wella Ag Kolbenspender

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2474316A (en) * 2009-10-09 2011-04-13 Kuo-Chung Fang Fluid dispenser with spout blocking arrangement
GB2474316B (en) * 2009-10-09 2011-10-12 Kuo-Chung Fang Fluid dispenser
CN102259721A (zh) * 2011-07-22 2011-11-30 孙德善 手控式液体出口阀门
GB2508862A (en) * 2012-12-13 2014-06-18 Tlc Design Ltd Piston incorporating valve controlling flow of fluid from storage cylinder
US9403632B1 (en) * 2013-06-17 2016-08-02 José Luis Marrero Ramos Fluid dispenser
ITMI20132062A1 (it) * 2013-12-11 2015-06-12 L4Belle S R L Tappo erogatore con chiusura automatica di una luce di erogazione di un fluido
WO2018011740A1 (fr) * 2016-07-12 2018-01-18 Aria Soluzione Gmbh Dispositif de pompage pour un récipient à fluide
JP7318433B2 (ja) 2019-09-06 2023-08-01 トヨタ紡織株式会社 液体塗布モジュール
JP7322630B2 (ja) 2019-09-24 2023-08-08 トヨタ紡織株式会社 乗物用内装材の製造方法

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