WO2004069420A1 - Ensemble pompe et contenant - Google Patents

Ensemble pompe et contenant Download PDF

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Publication number
WO2004069420A1
WO2004069420A1 PCT/JP2004/000867 JP2004000867W WO2004069420A1 WO 2004069420 A1 WO2004069420 A1 WO 2004069420A1 JP 2004000867 W JP2004000867 W JP 2004000867W WO 2004069420 A1 WO2004069420 A1 WO 2004069420A1
Authority
WO
WIPO (PCT)
Prior art keywords
case
bellows
shaft
container body
piston
Prior art date
Application number
PCT/JP2004/000867
Other languages
English (en)
Japanese (ja)
Inventor
Akira Mizuochi
Isamu Ishijima
Original Assignee
Advanex Inc.
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 Advanex Inc. filed Critical Advanex Inc.
Publication of WO2004069420A1 publication Critical patent/WO2004069420A1/fr

Links

Classifications

    • 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
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • 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
    • B05B11/0027—Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
    • 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
    • B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
    • 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
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • 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
    • B05B11/1052—Actuation means
    • B05B11/1053—Actuation means combined with means, other than pressure, for automatically opening a valve during actuation; combined with means for automatically removing closures or covers from the discharge nozzle during actuation
    • B05B11/1054—Actuation means combined with means, other than pressure, for automatically opening a valve during actuation; combined with means for automatically removing closures or covers from the discharge nozzle during actuation the valve being located upstream of an outlet valve

Definitions

  • the present invention relates to a pump and a container used for a pump-type container such as a hair washing agent used at home, for example.
  • pump-type containers have been used as containers for accommodating, for example, hair washes and detergents used at home.
  • the pump-type container includes a container body and a pump unit removably inserted into the container body.
  • the piston unit When the piston unit is pressed, the piston unit returns, and the pump unit returns to suck up the liquid from the container body. Then, when the piston unit is lowered, the liquid is discharged from the discharge port of the piston unit.
  • the bellows (bellows tube), which contracts when the piston is pressed, releases the liquid into the bellows by using a return operation that expands again when you release your hand.
  • a discharge port for example; Gazette
  • a suction valve and a discharge valve are provided upstream and downstream of the bellows. Is provided.
  • a conventional pump unit usually has an air hole that connects the inside of the container body to the outside so that the internal pressure inside the container body before and after the liquid is discharged is almost constant and the container body does not swell or dent. Is provided.
  • a bellows made of a bellows tube may have a large diameter part and a small diameter part that are alternately repeated. Although it is generally used, it is desirable to use a spiral shape in terms of productivity and cost. In other words, in the case of a shape in which the large diameter portion and the small diameter portion are alternately repeated, it is difficult to remove the product by pulling out the product when taking it out of the mold, so that it is difficult to manufacture by injection molding. On the other hand, if it is a helical shape, it can be removed by rotating and pulling it out, so that injection molding is possible, increasing production and production, and reducing costs accordingly. .
  • An object of the present invention is to provide a pump unit and a container that can prevent liquid leakage from an air hole and can also handle a helical bellows. Disclosure of the invention
  • a pump unit inserted into the container body and sucking the liquid in the container body out of the container body, a suction pipe inserted into the container body, and an upper part of the suction pipe
  • a bellows connected in communication and capable of returning in the extension direction of the suction pipe; and a bellows connected to an upper portion of the bellows to expand and contract the bellows, and to transfer the liquid in the container body through the suction pipe to the container body
  • a cap section for covering.
  • the case is formed with an air hole for communicating the inside and the outside of the case.
  • the inside of the air hole communicates with the outside of the container body between the cap portion and the shaft case, and the bellows returns to the extending direction.
  • An opening / closing unit is provided for blocking communication between the inside of the air hole and the outside of the container body. According to this pump unit, since the opening / closing portion is provided between the cap portion and the shaft case, the inside of the air hole is communicated with the outside of the container body by the operation of contracting the bellows by the piston portion, thereby extending the bellows. The return to the ⁇ direction can cut off the communication between the inside of the air hole and the outside of the container body.
  • the opening / closing portion communicates the inside of the air hole with the outside of the container body by operating the biston portion, and the pressure inside the container body is maintained at substantially the atmospheric pressure.
  • the bellows return to the extending direction so that the opening / closing part blocks the communication between the inside of the air hole and the outside of the container body, so that the liquid leaks out through the air hole. Is prevented.
  • the shaft case may be inserted into the case so as not to rotate around the axis of the case and to be movable in the axial direction.
  • the torsion force of the bellows prevents the shaft case from rotating. Therefore, it is possible to prevent the operability from being impaired due to the transmission of the torsional force due to the spiral bellows to the piston portion.
  • the piston portion includes the shaft case, and a biston shaft movably inserted into the shaft case.
  • the piston portion detachably engages the first engagement portion of the shaft case with the biston shaft.
  • a second engaging portion may be provided to make the piston shaft and the shaft case liquid-tight when engaged.
  • the piston shaft and the shaft case are integrated by engaging the second engagement portion of the piston shaft with the first engagement portion of the shaft case. Therefore, the operation of the shaft case by the operation of the piston shaft becomes possible.
  • the second engagement portion of the biston shaft with the first engagement portion of the shaft case, it is possible to make the pistonton shaft and the shaft case liquid-tight. Therefore, even if the container is accidentally turned over during use, the liquid in the container body is prevented from leaking out from between the piston shaft and the shaft case.
  • the container of the present invention includes the pump unit.
  • the opening / closing portion allows the inside of the air hole to communicate with the outside of the container body by operating the piston during use.
  • the pressure in the container body is maintained at substantially the atmospheric pressure.
  • the bellows returns in the extension direction, so that the opening / closing section blocks communication between the inside of the air hole and the outside of the container body. This can prevent the liquid from leaking through the air holes.
  • FIG. 1 is a side sectional view showing one embodiment of a container provided with a pump unit of the present invention.
  • FIG. 2 is a side sectional view of a main part of the container shown in FIG.
  • FIG. 3 is a cross-sectional plan view of a main part for describing a mechanism for preventing rotation of a shaft case from a mast.
  • FIG. 4 is a cross-sectional view of the piston shaft and the piston head.
  • FIG. 5 is a side sectional view when the container shown in FIG. 1 is not used.
  • FIG. 6 is a side sectional view for explaining a use state of the container shown in FIG.
  • FIG. 7A is an enlarged view of a main part showing a modification of the valve stem
  • FIG. 7B is an enlarged view of a main part showing a modification of the inner edge shape of the hole of the partition.
  • FIG. 1 shows an embodiment of a container provided with a pump unit of the present invention.
  • reference numeral 10 denotes a pump unit and 11 denotes a container.
  • the container 11 is configured by attaching a pump unit 10 to a container body 12 in which a liquid hair washing agent or the like is stored.
  • the container main body 12 is a bottomed cylindrical shape formed of a synthetic resin, and has a male screw portion 13 formed on the outer periphery of an upper mouth portion 12a.
  • a screw cap 15 made of synthetic resin with a female thread 14 screwed to the male thread 13 is detachable. Has been adhered to.
  • the pump unit 10 is attached to the container body 12. That is, a hole (not shown) is formed in the center of the screw cap 15, and a pipe-shaped case 16 made of synthetic resin is passed through the hole, so that the pump unit is formed. 10 is attached to the container body 12 via the screw cap 15.
  • the screw cap 15 together with a later-described caplet 18 constitutes a cap portion 50 in the present embodiment.
  • a flange 16 a is formed on an outer peripheral portion of the container body 12 on the side of the mouth portion 12 a.
  • the flange 16 a is in contact with the inner surface (lower surface) of the screw cap 15.
  • a packing 17 is provided on the lower surface side of the flange 16a. Through the packing 17, the inner (lower) side of the screw cap 15 and the upper edge of the mouth 12a are provided. And are tightly pressed against each other.
  • the inside and outside of the case 16 that is, the inside of the case 16, and the outside of the case 16 and the inside of the container body 12 are located at positions inside the mouth portion 12 a of the container body 12.
  • An air hole 16c to be communicated is formed.
  • the air hole 16 c is caused by a change in the liquid volume in the container body 12 by communicating the inside of the container body 12 to the outside through a gap between members formed in the case 16, as described later. To prevent “dents”.
  • a case 18 is attached to a portion of the case 16 projecting above the screw cap 15.
  • the chain 18 together with the screw cap 15 as described above constitutes the cap section 50 in the present embodiment.
  • the tablet 18 has an outer cylindrical portion 18 a fitted to the outer peripheral portion of the case 16, an inner cylindrical portion 18 b passed through the inside of the case 16, and an inner cylindrical portion 18 b. It has a top 18 formed directly above it. As shown in FIG. 2, fins 18d are formed on the inner surface (bottom surface) side of the top 18c.
  • the case 16 is fixed to the screw cap 15.
  • the chip plate 18 and the screw cap 15, that is, the cap portion 50 in the present embodiment, Part 1 2 Covers the end on the a side.
  • a hole (not shown) for sliding a biston shaft 21 described later is formed in the center of the top 18c. As shown in FIG. 2, the peripheral portion of this hole is formed thicker than other portions in order to hold the biston shaft 21 well and mechanically reinforce the fin 18d.
  • the hole is formed to have a larger diameter than the outer diameter of the piston shaft 21 so that the piston shaft 21 can slide smoothly. Accordingly, a slight gap is formed between the piston shaft 21 and the inner edge of the hole. This gap allows communication between the inside and outside of the top 18 c of the chip plate 18, that is, the air hole 16 c located inside the chip plate 18 and the outside air side outside the chip plate 18.
  • the fin 18 d is an annular and thin one formed around the hole of the top 18 c for sliding the piston shaft 21, and is a close-contact cylinder 20 c of a shaft case 20 described later. Together, they constitute the opening / closing section 51 in the present embodiment.
  • the pump unit 10 includes the case 16, a bellows unit 19 made of a synthetic resin disposed in a state inserted through the case 16, and the bellows unit 1.
  • a shaft case 20, a piston shaft 21, and a piston head 22 connected to 9 are provided.
  • the shaft case 20, the piston shaft 21, and the piston head 22 constitute a piston portion in the present embodiment.
  • the bellows unit 19 is inserted into the container body 12 to suck out the liquid in the container body 12 out of the container body 12.
  • the bellows unit 19 is provided with a suction pipe 23 inserted into the container body 12.
  • the suction pipe 23 is formed by cutting the suction end 23 a at the lower end thereof diagonally.
  • a connecting pipe 16b formed outside the bottom of the case 16 is provided.
  • a valve stem 24 made of resin is disposed on an opening side of the connecting pipe 16 b in the case 16.
  • the valve stem 24 is a rod-like member extending upward from the bottom side of the case 16 (the side of the connection pipe 16b).
  • a liquid passage hole 24a communicating with the connecting pipe 16b is formed inside the valve stem 24, and a valve portion 24 b is formed at the upper end portion of the valve stem 24, and the valve portion 24 b bulges in a state in which a central portion of the peripheral surface is curved outward.
  • the bottom side of the valve stem 24 is held and fixed to the inner surface of the case 16.
  • a closed cylindrical fixing portion 24c for holding and fixing the lower end portion of the bellows 25 is formed.
  • the bellows 25, which constitutes one component of the bellows unit 19, has a helical shape, and is capable of returning to its extending direction by expanding and contracting in the length direction (vertical direction) in the case 16. Is formed.
  • the bellows 25 is connected to the suction pipe 23 through the liquid hole 24 a of the valve stem 24 and the connecting pipe 16 b by inserting the valve stem 24 into the inside thereof. are doing.
  • the bellows 25 is made of low-density polyethylene and has a predetermined panel constant. When pressed, the bellows 25 easily compresses and reduces the internal volume. Also, when the pressing force is released, it easily returns to the original state, that is, the extending direction, and the internal volume increases.
  • a suction valve 26 that allows only liquid to flow from the container body 12 into the bellows 25 is provided in the connection pipe 16 b of the case 16 on the upstream side of the bellows 25.
  • the suction valve 26 has a valve chamber 27 integrally formed with the connecting pipe 16b.
  • a valve element 28 inserted from the upper opening side of the case 16 is provided in the valve chamber 27 in the valve chamber 27.
  • the valve element 28 is made of a synthetic resin having a bowl-shaped shape that opens toward the downstream side (the bellows 25 side).
  • the valve element 28 prevents the liquid from flowing backward by its outer peripheral surface being in close contact with the inner peripheral surface of the valve chamber 27.
  • the valve body 28 may be spherical or hemispherical, as long as it can close the valve chamber 27, and its shape is not particularly limited.
  • the valve element 28 is provided with a mouth part 28a on the upstream side thereof, and the posture of the valve element 28 is stabilized by the rod part 28a.
  • a V-shaped notch (not shown) is formed on the periphery of the valve element 28. Due to this notch, the liquid is quickly drawn out when the valve is opened, and flows toward the bellows 25 through the liquid passage hole 24 a of the valve stem 24.
  • a cylindrical press-fit portion 25a is formed on the upper end side of the bellows 25, a cylindrical press-fit portion 25a is formed.
  • a partition 25b is formed inside the press-fit portion 25a.
  • a hole (not shown) is formed in the center of the partition 25b. This hole is formed so as to be removably engaged with the valve portion 24 b of the valve stem 24. This hole closes the opening in a liquid-tight manner by engaging with the valve portion 24b. With such a configuration, the valve portion 24b and the partition 25b function as a valve.
  • the lower end side of the shaft case 20 is liquid-tightly inserted into the press-fit portion 25a.
  • the shaft case 20 has a cylindrical shape made of a synthetic resin, and its lower end is connected to the bellows 25 by projecting to the press-fitting portion 25a.
  • the shaft case 20 is held and fixed to the shaft 18 by passing the upper end through the inner cylinder 18 b of the chain 18.
  • a female screw portion 20 a force S is formed on the inner surface of the shaft case 20.
  • a first engaging portion 20b slightly extending inward is formed along the circumferential direction of the shaft case 20, as shown in FIG. ing.
  • a close contact cylinder 20c is formed so as to be detachably engaged with the fin 18d of the chip plate 18.
  • the close contact cylinder 20c is formed so as to surround the periphery of a hole (not shown) of the shaft case 20.
  • the close contact cylinder 20c comes into close contact with the inner surface side of the fin 18d, and separates from the fin 18d when the shaft case 20 is pushed down.
  • the fin 18 d and the close contact cylinder 20 c open and close the gap between the inner edge of the hole of the chip plate 18 and the biston shaft 21.
  • valves including the opening / closing portion 51, the valve portion 24b, and the partition 25b close almost simultaneously when the pressure on the piston portion is released.
  • the thickness of the fin 18d, the relationship between the inner diameter of the hole of the partition 25b and the outer diameter of the valve portion 24b, and the material, etc., should satisfy the relationship between the force A and the force B described above. Has been determined.
  • a ridge 29 is formed on the outer periphery of the shaft case 20 along the longitudinal direction of the shaft case 20. As shown in FIG. 3, the ridge 29 fits into a groove 30 formed in the inner cylinder 18 b of the chain 18, and when the piston head 22 is turned as described later, the shaft Functions as a detent to prevent case 20 from rotating. Since the ridges 29 are movable in the length direction of the groove 30, these ridges 2 are required to move up and down the shaft case 20 due to a pressing operation of the piston head 22 described later. It is not hindered by the fitting of 9 and groove 30 at all. As shown in FIG.
  • the shaft case 20 in this embodiment, four protruding ridges 29 are formed on the shaft case 20, and four grooves 30 are also formed on the inner cylinder 18 b of the chip plate 18 in response to this.
  • the number of the ridges 29 and the grooves 30 is not particularly limited, and may be one or two or more.
  • a small-diameter connecting pipe 21 c is formed at the upper end of the piston shaft 21.
  • a piston pipe 22 is connected to the connecting pipe 21c.
  • a discharge valve 34 is provided in the connecting pipe 21c so as to allow only the liquid to flow from the piston shaft 21 side to the piston head 22 side.
  • the discharge valve 34 includes a valve chamber 35 integrally formed with the connecting pipe 21c and a valve body 36, and is configured in the same manner as the above-described suction valve 26.
  • the biston head 22 is integrally connected to the upper end of the biston shaft 21.
  • the head body 22a and the discharge pipe 22b communicating with the biston shaft 21 are connected.
  • the head main body 22 a is fitted to the outer cylindrical portion 18 a of the above-mentioned chip plate 18 and is detachably attached thereto.
  • the discharge pipe 22b communicates with the piston shaft 21 via a valve chamber 35 in the connecting pipe 21c.
  • the discharge pipe 22 b has an opening at the tip end as a discharge port, from which the liquid in the container body 12 is discharged.
  • the biston head 22 When not in use, such as during transportation (transportation) or storage, the biston head 22 is rotated in advance, and the biston shaft 21 is pushed down against the shaft case 20, as shown in Fig. 5. Keep it. Then, the biston head 22 is fitted into the outer cylindrical portion 18a of the chair 18 and is attached thereto. Therefore, packing and the like are easily performed in this state. In this state, since the piston head 22 is not pressed, the liquid inside is not forcibly sent out.
  • the bellows 25 Since the piston shaft 21 is accommodated in the shaft case 20 without pushing down the shaft case 20, the bellows 25 is extended without being compressed. Therefore, the bellows 25 do not suffer from settling due to continuous compression for a long time.
  • valve portion 24 b of the valve stem 24 engages with the hole (not shown) of the partition 25 b of the press-fitting portion 25 a of the bellows 25, and the opening thereof is liquid-tightly closed, Even if the container 11 is accidentally turned over, the liquid in the container body 12 does not leak out of the discharge pipe 22 b through the bellows 25.
  • the shaft case 20 Since the shaft case 20 is at the highest position in the case 16 without being pushed down, the tight cylinder 20 c of the shaft case 20 and the fins 18 of the masts 18 forming the cap portion 50 are formed. d comes into close contact with it, and the opening / closing part 51 is closed. Therefore, even if the container 11 is accidentally overturned and the liquid in the container body 12 passes through the air hole 16c, the liquid between the chip plate 18 and the shaft case 20 may be removed. It does not leak out through the gap.
  • piston shaft 21 Since the piston shaft 21 is not exposed to the outside, it can be protected from dirt.
  • the screw head 22 is rotated, and the male screw portion 2 1 a of the piston shaft 21 is connected to the shaft case 2. 0 along the female thread 20 a.
  • the piston shaft 21 rises with respect to the shaft case 20, and the second engagement portion 21b contacts the first engagement portion of the shaft case 20.
  • the second engagement portion 21 b of the biston shaft 21 becomes the first engagement portion 20 b of the shaft case 20. Over and engage with its upper side.
  • the piston shaft 21 and the shaft case 20 are integrated, and the container 11 is brought into a use state as shown in FIG.
  • the first engagement portion 20b of the shaft case 20 is sandwiched between the second engagement portion 21b of the biston head 21 and the male screw portion 21a, so that the piston The head 21 and the shaft case are integrated, and liquid tightness between the two is ensured.
  • the bellows 25 returns in the extending direction and returns to the state shown in FIG. 1, so that the inside of the bellows 25 becomes negative pressure.
  • the shaft case 20 also rises, so that the sealing cylinder 20c comes into close contact with the fin 18d, and the opening / closing section 51 is closed again.
  • the bellows 25 returns as described above, and the inside of the bellows 25 becomes negative pressure, and the liquid flows from the container body 12 into the bellows 25. Is sucked in, and the inside of the bellows 25 becomes filled with liquid.
  • the shaft case 20 also rises and the opening / closing part 51 closes again, and the communication between the inside of the container body 12 and the outside of the container body 12 is cut off.
  • the opening / closing part 51 is provided between the cap part 50 and the shaft case 20.
  • the shaft case 20 Since the shaft case 20 is prevented from rotating in the circumferential direction with respect to the case 16, the shaft case 20 is rotated by the torsion force of the bellows 25 even though the bellows 25 has a spiral shape. do not do. Therefore, it is possible to prevent the torsion force generated by the spiral bellows 25 from being transmitted to the piston head 22 and impairing the operability thereof.
  • the second engaging portion 21b of the piston shaft 21 is connected to the first engaging portion of the shaft case 20.
  • the shaft case 20 can be operated by operating the piston shaft 21 side.
  • the gap between the piston shaft 21 and the shaft case 20 is established. Can be liquid tight. Therefore, even if the container 11 is accidentally turned over during use, it is necessary to prevent the liquid in the container body 12 from leaking out from between the biston shaft 21 and the shaft case 20. Can be.
  • the convex portion may not be continuous in a spiral shape as shown in FIG. 1, but may be a large diameter portion and a small diameter portion which are alternately repeated.
  • the suction valve various types of conventionally known shapes such as a pole type can be used.
  • a plurality of air holes 16c may be formed.
  • valve stem 24 may be a valve portion 24 d having a shape as shown in FIG. 7A, that is, a cylindrical valve portion 24 d having substantially uniform swelling of the circumferential surface in the axial direction. .
  • the close contact cylinder 20 c of the shaft case 20 constituting the opening / closing portion 51 and the chip plate 18 are formed.
  • the bellows 25 can be easily contacted with the fin 18d, that is, the bellows 25 can be formed without being affected by the force A generated when the contact cylinder 20c comes into contact with and comes into contact with the fin 18d.
  • the valve portion 24 d instantaneously closes the hole of the partition 25 b.
  • valve part 24 d When the valve part 24 d is formed in a columnar shape as shown in FIG. 7A, in order to close the hole of the partition 25 b with the valve part 24 d in a liquid-tight manner, its outer diameter d 1 Must be larger than the inner diameter d2 of the hole of the partition 25b. However, if the dimensional difference is too large, the resistance here becomes large, and the bellows 25 may not return sufficiently in the extending direction, and the opening / closing portion 51 may not be closed. Therefore, it is necessary to keep the dimensional difference within a predetermined range.
  • the friction resistance when the valve portion 24d slides on the inner peripheral edge of the hole can be reduced. Therefore, the preferred range (predetermined range) of the dimensional difference can be widened to increase the degree of freedom in dimensional control.
  • the inside of the air hole is communicated with the outside of the container body by the operation of contracting the bellows by the biston portion between the cap portion and the shaft case, thereby extending the bellows.
  • An opening / closing part is provided to block communication between the inside of the air hole and the outside of the container body by returning to the direction. Therefore, at the time of use, the opening / closing portion allows the inside of the air hole to communicate with the outside of the container body by operating the piston portion, so that the pressure in the container body can be maintained at substantially the atmospheric pressure.
  • the bellows returns to the extending direction, so that the opening / closing part blocks the communication between the air hole ⁇ and the outside of the container body, preventing liquid from leaking through the air hole.
  • the piston portion is movably inserted into the shaft case within the shaft case.
  • the piston portion is detachably engaged with the first engagement portion of the shaft case and is engaged with the piston shaft.
  • the piston shaft and the shaft case are integrated by engaging the second engagement portion of the piston shaft with the first engagement portion of the shaft case.
  • the opening / closing portion allows the inside of the air hole to communicate with the outside of the container body by operating the biston portion.
  • the pressure inside can be kept almost at atmospheric pressure.
  • the bellows return to the extending direction, so that the opening / closing part blocks the communication between the inside of the air hole and the outside of the container body, so that the liquid leaks out through the air hole. Can be prevented.

Landscapes

  • Closures For Containers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne un ensemble pompe qui comporte : un tuyau d'aspiration inséré dans un corps de contenant ; un soufflet communiquant avec le tuyau d'aspiration ; une partie piston reliée au soufflet pour tendre et comprimer celui-ci afin de faire sortir par pompage un liquide se trouvant dans le contenant ; un logement destiné à recevoir un logement de tige et le soufflet ; et une partie capuchon destinée à recouvrir une extrémité du logement. Dans ledit logement est formé un trou de passage d'air assurant la communication entre l'intérieur et l'extérieur du logement. Une partie d'ouverture/fermeture est placée entre la partie capuchon et le logement de tige. Lorsque le soufflet est comprimé, cette partie d'ouverture/fermeture fait communiquer la partie intérieure du trou de passage d'air avec la partie extérieure du corps de contenant, et, lorsque le soufflet effectue un déplacement dans son sens de compression, la partie d'ouverture/fermeture ferme la communication entre l'intérieur du trou de passage d'air et l'extérieur du corps de contenant.
PCT/JP2004/000867 2003-02-10 2004-01-29 Ensemble pompe et contenant WO2004069420A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003-032659 2003-02-10
JP2003032659A JP2004261639A (ja) 2003-02-10 2003-02-10 ポンプユニット及び容器

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4112493A4 (fr) * 2020-02-25 2024-04-03 Pan Jingyuan Pompe à émulsion entièrement en plastique

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Publication number Priority date Publication date Assignee Title
KR101987557B1 (ko) * 2017-12-07 2019-09-30 양형택 펌프식 액체 밀폐용기
JP7086457B2 (ja) * 2017-12-28 2022-06-20 株式会社吉野工業所 容器用吐出具
KR102248269B1 (ko) * 2020-11-25 2021-05-03 윤성수 잔량 방지 기능을 구비한 펌프용기
JP7440015B1 (ja) 2023-07-10 2024-02-28 株式会社平賀 注入器およびこれを使用したコンクリート構造物の補強方法

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Publication number Priority date Publication date Assignee Title
JPS59150549U (ja) * 1983-03-25 1984-10-08 株式会社資生堂 噴霧容器のためのポンプ装置
JPH1094744A (ja) * 1996-07-29 1998-04-14 Shiseido Co Ltd 容器用ポンプ
JP2000070776A (ja) * 1998-08-27 2000-03-07 Lion Corp ポンプディスペンサー

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150549U (ja) * 1983-03-25 1984-10-08 株式会社資生堂 噴霧容器のためのポンプ装置
JPH1094744A (ja) * 1996-07-29 1998-04-14 Shiseido Co Ltd 容器用ポンプ
JP2000070776A (ja) * 1998-08-27 2000-03-07 Lion Corp ポンプディスペンサー

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4112493A4 (fr) * 2020-02-25 2024-04-03 Pan Jingyuan Pompe à émulsion entièrement en plastique

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