WO2002064264A1 - Unite de soupape et recipient - Google Patents

Unite de soupape et recipient Download PDF

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Publication number
WO2002064264A1
WO2002064264A1 PCT/JP2001/004724 JP0104724W WO02064264A1 WO 2002064264 A1 WO2002064264 A1 WO 2002064264A1 JP 0104724 W JP0104724 W JP 0104724W WO 02064264 A1 WO02064264 A1 WO 02064264A1
Authority
WO
WIPO (PCT)
Prior art keywords
bellows
shaft
container body
piston
check valve
Prior art date
Application number
PCT/JP2001/004724
Other languages
English (en)
Japanese (ja)
Inventor
Kiyoshi Chikashige
Akira Mizuochi
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
Priority claimed from JP2001037273A external-priority patent/JP3399930B2/ja
Priority claimed from JP2001143822A external-priority patent/JP3739669B2/ja
Application filed by Advanex Inc. filed Critical Advanex Inc.
Priority to EP01936848A priority Critical patent/EP1360995A4/fr
Publication of WO2002064264A1 publication Critical patent/WO2002064264A1/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
    • B05B11/01—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
    • B05B11/1059—Means for locking a pump or its actuation means in a fixed position
    • B05B11/106—Means for locking a pump or its actuation means in a fixed position in a retracted position, e.g. in an end-of-dispensing-stroke position

Definitions

  • the present invention relates to a parbunite 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 valve unit removably inserted into the container body. Normally, when a piston unit is pressed, the piston unit returns and the liquid is sucked up from the container body. Then, when the piston unit is pressed, the liquid is discharged from the discharge end of the piston unit.
  • the valve unit 1 includes a pipe-shaped valve body 2 removably inserted into a container body (not shown), and an L-shaped pipe-shaped biston portion 3. It is composed of
  • the piston part 3 is slidably inserted into the valve body 2, between the suction port 4 of the knob body 2 and the piston 5 at the end of the piston part 3 via the piston part 3.
  • a liquid storage section 6 communicating with the atmosphere is formed.
  • a first check valve B is provided on the suction port 4 side of the liquid storage section 6 to allow only the flow of the liquid from the container body side to the liquid storage section 6 side.
  • a second check valve G is provided between the discharge end of the liquid storage section 6 and the discharge side of the liquid storage section 6 to allow only the liquid to flow out of the liquid storage section 6 to the biston section 3.
  • a coil spring 7 is interposed between the first check valve B and the first check valve B. The coil spring 7 urges the piston 3 toward the valve body 2 in a direction to increase the volume of the liquid storage section 6.
  • Fig. 12 shows the state where the piston is pushed in
  • Fig. 13 This shows a state in which the piston part 3 has returned.
  • the conventional valve unit has a problem in that the coil spring 7 must be inserted between the piston 5 and the suction port 4, so that the assembling operation is troublesome.
  • the coil springs 7 made of metal usually have to be disassembled and disposed separately, which is an obstacle to reuse.
  • the liquid in the container body does not usually go out unless the piston portion 3 is pressed, but if the container falls down during transfer or the like, the first Check valve: There was a problem that the liquid flowed out from the piston 3 due to the opening of the check valve B and the second check valve G.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a valve unit that is easy to assemble, can be manufactured at low cost, and is easy to reuse, and can prevent the liquid from flowing out even if it falls down. And a container. Disclosure of the invention
  • valve unit (10) according to claim 1, wherein the valve unit (10) is inserted into the container body (12) and sucks the liquid in the container body (12) out of the container body (12).
  • a suction pipe (21) to be inserted into the container body (12) is provided, and a bellows-like bellows (22) capable of returning in the extending direction is connected to the upper part of the suction pipe (21).
  • a pipe-shaped shaft case (16) is connected to the upper part of (22) and the pipe-shaped piston shaft (30) can be moved relative to the shaft case (16) on the upper side of the shaft case (16). And connect the piston head (20) to the upper end of the piston shaft (30).
  • a first check valve (23) is provided upstream of the bellows (22) to allow only the flow of the liquid from the inside of the container body (12) into the bellows (22), and the bellows (22) Under A second check valve (24) is provided to allow only the outflow of liquid from inside the bellows (22) to the shaft case (16) side.
  • An engaging portion (35) is provided between the shaft case (16) and the biston shaft (30) for detachably engaging the biston shaft (30) in the shaft case (16).
  • the biston head (20) is provided with an engaging portion (39) which engages with the mouth of the container body (12) and is fixed thereto.
  • the valve unit (10) according to claim 2 is the valve unit (10) according to claim 1, wherein the locking portion (35) provided between the shaft case (16) and the piston shaft (30) is A locking groove (34) formed in one of the shaft case (16) and the biston shaft (30), and a locking projection (33) formed in the other.
  • the valve unit (10) according to claim 3 is the valve unit (10) according to claim 2, wherein a press-fit portion (22b) is formed at an upper portion of the bellows (22), and the press-fit portion (22b) is a shaft.
  • a guide groove (16a) is formed in the shaft case (16), and a rib (22c) for engaging with the guide groove (16a) is provided in a press-fit portion (22b) of the bellows (22). It is characterized by being.
  • the valve unit (10) according to claim 4 is the valve unit (10) according to claim 1, wherein an opening of the container main body (12) is attached to the container main body (12) and the shaft case (16). ) Is formed by a bush cap (15) through which the gap between the bush cap (15) and the shaft case (16) and the inside of the container body (12) are formed. An air hole (18) for communication is formed.
  • the valve unit (10) according to claim 5 is the valve unit (10) according to claim 4, wherein the piston head (20) is connected to the piston shaft (30) in a state of being fitted to the piston shaft (30),
  • a stopper is provided between the bush cap (15) and the shaft case (16) penetrating the bush cap (16), for preventing rotation of the shaft case (16) in the circumferential direction without hindering movement in the communicating direction.
  • (32) is provided.
  • the valve unit (10) according to claim 6 is the valve unit (10) according to claim 1, wherein the valve element (28) of the second check valve (24) is positioned downstream. (28a).
  • the valve unit (10) according to claim 7 is the valve unit (10) according to claim 1, wherein the suction pipe (21), the first check valve (23), the bellows (22) and the second It is characterized in that it is integrally molded with the check valve (24).
  • the valve unit (10) according to claim 8 is the valve unit (10) according to claim 7, wherein the piston head (20) is connected to the piston shaft (30) in a state of being fitted thereto.
  • a container (11) according to claim 9 is characterized by comprising the valve unit (10) according to claim 1 and a container body (12) to which the valve unit (10) is detachably attached.
  • the pulp unit (10) according to claim 10 is a pulp unit (10) that is inserted into the container body (12) and sucks the liquid in the container body (12) out of the container body (12).
  • a first check valve (24) that allows only the flow of liquid from inside the container body (12) into the bellows (22), and the bellows (22)
  • a second check valve (24) that allows only the liquid to flow from inside the bellows (22) to the piston (40) side is provided in the downstream of
  • the bellows (22) is made of low-density polyethylene, has a thickness of 0.1X to 0.4Xmm when the liquid suction capacity is X cc, and has a peak (22d). It is characterized in that the angle 0 formed by the outer surfaces of these is 80 ⁇ 15 °.
  • the valve unit (10) according to claim 11 is the valve unit (10) according to claim 10, wherein the bellows (22) has a ratio (dl / d2) of the trough diameter d1 to the peak diameter d2. (0.9 ⁇ 0.05) It is characterized by being formed in XZ3.
  • the valve unit (10) according to the twelfth aspect is the valve unit (10) according to the tenth aspect, wherein the biston portion (40) is connected to an upper portion of a bellows (22) to be connected to the container body (12).
  • a piston head (20) connected to the upper end of the piston shaft (30).
  • An engaging portion (35) for detachably engaging the piston shaft (30) is provided on the shaft case (16) between the shaft case (16) and the piston shaft (30).
  • the piston head (20) is provided with an engaging portion (39) that engages with the mouth of the container body (12) and is fixed thereto.
  • a container (11) according to claim 13 is characterized by comprising the valve unit (10) according to claim 10 and a container body (12) to which the valve unit (10) is detachably attached.
  • FIG. 1 is a side sectional view showing a schematic configuration of an embodiment of a valve unit of the present invention and a container provided with the valve unit.
  • FIG. 2 is a side sectional view of a bellows unit in the valve unit shown in FIG.
  • FIGS. 3A and 3B are diagrams for explaining the liquid suction capacity.
  • FIG. 3A is a diagram illustrating a state in which the bellows is compressed
  • FIG. 3B is a diagram illustrating an initial expanded state in which the bellows has returned from the compressed state.
  • FIG. 3A is a diagram illustrating a state in which the bellows is compressed
  • FIG. 3B is a diagram illustrating an initial expanded state in which the bellows has returned from the compressed state.
  • FIG. 4 is a cross-sectional side view of a main part for describing a schematic configuration of a first check valve and a second check valve in the pulp unit shown in FIG.
  • FIG. 5 is a view for explaining a part of a stopper between the bush cap and the shaft case, and is a view taken along line AA in FIG.
  • FIG. 6 is a side view of the piston shaft.
  • FIG. 7 is a sectional side view of a main part of the shaft case.
  • FIG. 8 is a view for explaining an engagement state between the rib of the bellows press-fit portion and the guide groove of the shaft case, and is a view taken along the line BB in FIG.
  • FIG. 9 is a side cross-sectional view showing the state of the container shown in FIG. 1 when liquid leakage is prevented during transfer or the like.
  • FIG. 10 is a side sectional view for explaining a use state of the container shown in FIG.
  • FIG. 11 is a graph showing the relationship between the pressing force and the response time with respect to the ratio (d 1 / d 2).
  • FIG. 12 is a schematic configuration diagram of an example of a conventional container, and is a side cross-sectional view illustrating a lowered state of a pulp unit.
  • FIG. 13 is a schematic configuration diagram of an example of a conventional container, and is a side cross-sectional view of the valve unit in an up state.
  • valve unit and the container of the present invention will be described in detail.
  • FIG. 1 is a view showing an embodiment of a valve unit of the present invention and a container provided with the valve unit.
  • reference numeral 10 denotes a valve unit
  • 11 denotes a container.
  • the container 11 is configured such that a valve unit 10 is attached to a container body 12 in which a liquid hair cleanser 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 in an upper mouth portion 12a.
  • a synthetic resin bush cap 15 having a female thread portion 14 to be screwed to the male thread portion 13 is detachably attached to the mouth portion 12a, and the push cap 15 is attached thereto.
  • Valpuni The port 10 can be attached to the container body 11.
  • the push cap 15 has an outer cylindrical portion 15a formed with the male screw portion 13 and an inner cylindrical portion 15b inserted into the mouth portion 12a of the container body 12 and attached thereto.
  • a hole (not shown) in the inner cylindrical portion 15b forms an opening in the container body 12, through which the shaft case 16 of the valve unit 10 is slidably passed. .
  • a synthetic resin case 17 attached to the inside of the container body 11 is mounted in the mouth 12 a of the container body 12, and the push cap 15 is inserted through the case 17. It is attached to the mouth 1 2a.
  • the inner cylindrical portion 15b is screwed to the inner surface of the case 17 and fixed thereto.
  • the inner cylinder portion 15b and the case 17 of the push cap 15 have an air hole for communicating the gap between the inner cylinder portion 15b and the shaft case 16 with the inside of the container body 12. 18 are formed.
  • an upper portion of the bush cap 15 is formed with a male screw portion 15c for engaging with a later-described biston head.
  • the valve unit 10 is connected to the case 17, a synthetic resin bellows unit 19 disposed so as to be inserted through the case 17, and a synthetic resin biston attached to the bellows unit 19. ⁇ 20.
  • the bellows unit 19 is inserted into the container main body 12 to suck the liquid in the container main body 12 out of the container main body 12.
  • a suction pipe 21 inserted into the container main body 12 is provided in the nozzle unit 19.
  • the suction pipe 21 is formed by cutting the suction end 21 a at the lower end thereof diagonally.
  • a bellows-shaped bellows 22 that can return in the extending direction is connected to the upper end side of the suction pipe 21 in a communicating state.
  • the bellows 22 is easily compressed by pressing, and reduces the internal volume.When the pressing force is released, the bellows 22 returns to the original state, that is, easily returns in the direction of extension, and It is made of low-density polyethylene configured to increase the volume of the filter, has a predetermined panel constant, and has a liquid suction part inside.
  • the bellows' 22 is in a state of being compressed as shown in FIG. 3 (a) and in a state of being returned from this compressed state as shown in FIG.
  • the difference in volume from the initial extended state where no pressure is applied is expressed as the liquid suction volume X
  • the bellows 22 has a bellows-like cylindrical body having a wall thickness of not less than 0.4 IX [mm] and not more than 0.4 X [mm], and preferably not more than 0.5 X / 3. [mm] and 1.OX / 3 [mm] or less.
  • X indicates the liquid suction volume described above.
  • the angle 6> formed by the outer surface of the bellows 2 2d in the bellows shape of the bellows 2 2 is 80 ⁇ 1 in the initial extended state where no pressing force is applied as shown in FIG. 3 (b). 5 °.
  • the bellows 22 is made of low-density polyethylene (for example, linear low-density polyethylene “Novatech LL (trade name); Nippon Polychem Co., Ltd.”), and its wall thickness and peak 22
  • the bellows 22 can be expanded and contracted, that is, compressed by pressing and release of the pressing force without interposing a metal coil spring as in the related art.
  • the return to the original state (expansion) is achieved in a favorable manner.
  • the thickness of the bellows 22 is less than 0. IX [mm], the elastic return force becomes insufficient because it is too thin, and the response after compressing the bellows 22, that is, the pressing force is released. This is not preferable because the time required to return to the original state later is later than the desired range.
  • the thickness exceeds 0.4 X [mm] the pressing force when compressing the bellows 22 due to excessive thickness exceeds the pressing force in a desired range, and the usability deteriorates. .
  • the angle formed by the outer surface of the peak 2 2 d of the bellows 22 is less than 65 °, the elastic restoring force becomes insufficient and the response becomes slower than the desired range, which is not preferable. On the other hand, if it exceeds 95 °, the pressing force when compressing the bellows 22 exceeds the desired range of pressing force, which is not preferable.
  • the liquid in the container body 12 is pressed several times.
  • Valleys in the form of a bellows for example, when the liquid is a shampoo and the liquid suction volume of Velody 22 is 1 cc or 3 cc.
  • the shaft case 16 is fixed to the upper end side of such a bellows 22 by press fitting as shown in FIG.
  • a valve 23 is provided.On the other hand, the liquid flowing from inside the bellows 22 to the piston 20 to the piston 20 side is provided downstream of the bellows 22, that is, between the bellows 22 and the shaft case 16.
  • a second check valve 24 is provided to allow only the outflow of water.
  • the first check valve 23 is formed with a valve chamber 25 integrally formed with the suction pipe 21 and the bellows 22, and the second check valve 24 is formed with the bellows 2 2 is formed with a valve chamber 26 integrally formed with the connection portion 22a at the upper end.
  • a pipe-shaped press-fitting portion 22b is further formed on the connecting portion 22a at the upper end of the bellows.
  • the press-fit portion 22 b is press-fitted into the shaft case 16 and fixed to the shaft case 16 as described above.
  • the press-fit portion 22b is provided with a rib 22c which is engaged with the guide groove 16a of the shaft case 16 as described later.
  • the bellows unit 19 penetrates through the lower opening 17 a of the case 17 at 25 valve chambers of the first check valve 23.
  • valve bodies 27, 28 that can be inserted from the upper opening side of the suction end 21a of the suction pipe 21 or the press-fitting part 22b of the bellows 22 are inserted. It is located.
  • each of the valve bodies 27 and 28 is formed to have a bowl-shaped part 27 a (28 a) that opens toward the downstream side (the shaft case 16 side). It is made of synthetic resin.
  • the valve bodies 27 and 28 may be spherical or hemispherical as long as they can close the lower opening 25a (26a) of the valve chamber 25 (26). The shape is not particularly limited.
  • the valve body 27 of the first check valve 23 and the valve body 28 of the second check valve 24 are located at the center of the bowl-shaped portion 27a (28a) as shown in FIG.
  • a rod 27 b (28 b) extending upstream is formed on the outside (lower side) of the part, and the rod-shaped part 27 a (28 b) is formed by these rods 27 b (28 b). a) The posture is stabilized.
  • the bowl-shaped portion 27 a (28 a) has an outer peripheral surface formed in an arc shape, and the outer peripheral surface is in close contact with the inner peripheral surface of the valve chamber 31.
  • these bowl-shaped portions 27a and 28a are made thinner or formed of a soft material to enhance the sealing property.
  • a V-shaped notch 27c is formed on the periphery of the bowl-shaped portion 27a. With such a configuration, when the first check valve 23 is opened, the valve element 27 allows liquid or air to escape from the notch 27c.
  • a pair of projections 29, 29 is formed on the downstream side in the valve chamber 26, whereby the valve element 28 Parts 29, 29 so that they do not rise above 29. If the valve body 28 can be prevented from being lifted, other configurations can be adopted in place of the projections 29, 29.
  • the cross-sectional shape of the valve chamber 26 itself can be changed to a valve body. Oval, square, triangular or other irregular cross-sections may be used so that 28 does not float.
  • the shaft case 16 is press-fitted into the press-fitting portion 2 2 b of the bellows 22, and is fixed in a pipe-like state so as to communicate with the shaft case 16.
  • a piston shaft 30 is movably inserted into the upper end side.
  • the shaft case 16 has a large-diameter portion 31 extending outward in the vicinity of the center of the outer peripheral surface. As shown in FIG. 1, the large-diameter portion 31 abuts against the lower end surface of the inner cylindrical portion 15 b of the push cap 15 so as to prevent the push cap 15 from being lifted upward. It functions as.
  • a projection 32 a projecting outward is formed as shown in FIG.
  • the projection 32a and the guide groove 32b are formed by a superstrate that prevents the shaft case 16 from rotating in the circumferential direction without hindering the movement in the through direction.
  • the piston shaft 30 has a pair of locking projections 33 formed at positions opposed to each other at the center of the outer peripheral surface.
  • These locking projections 33 have tapered surfaces 33a on the lower surface side as shown in FIG. 6, and are formed at the upper end of the inner peripheral surface of the shaft case 16 as shown in FIG.
  • the locking projection 34 and the locking groove 34 constitute a locking portion 35 of the present invention.
  • the locking groove 34 has a tapered surface 34a on the upper surface side, whereby the biston shaft 30 is rotated so that the locking projection 33 is formed as described later.
  • the tapered surface 33 a and the tapered surface 33 b lock with the locking projection 33.
  • the further rotation will eliminate the above-mentioned looseness, so that the locking protrusion 33 and the locking groove 34 will be securely locked. . That is, the locking projection 33 and the locking groove 34 are locked by rotating the piston shaft 30 and the shaft case 16 relatively in one direction, and are rotated in the opposite direction. The lock is released by the movement.
  • a guide groove 16a is formed on the inner peripheral surface of the shaft case 16 along the longitudinal direction thereof so as to be engaged with the rib 22c.
  • the locking projection 33 is also slidably engageable with 6a. That is, when the piston shaft 30 is at a position where the piston shaft 30 is not locked to the shaft case 16, the locking projection 33 is slidably engaged with the guide groove 16a. With this configuration, the locking projection 33 can freely move up and down in the shaft case 16 without being interfered by the inner peripheral surface of the shaft case 16.
  • a rib 22c formed at the press-fitting portion 22b of the bellows 22 is engaged with the lower end side (the bellows 22 side) of the guide groove 16a. As a result, the connection between the shaft case 16 and the bellows 22 is strengthened, and liquid leakage between them is prevented.
  • the lower end of the piston shaft 30 has a shape and dimensions corresponding to the inner shape of the bowl-shaped portion 28a of the valve element 28 of the second check valve 24 as shown in FIG.
  • a small diameter portion 36 for mounting the piston head 20 is formed at the upper end.
  • the piston head 20 is an L-shaped one attached to the upper end of the piston shaft 30, that is, the upper end of the bellows unit 19 having the configuration shown in FIG. 2, as shown in FIG.
  • the piston head 20 is formed with a discharge hole 37 communicating with a hole (not shown) of the piston shaft 30.
  • the discharge port 37 has a discharge port 3 for discharging liquid. It is 8.
  • the piston head 20 has a female screw portion 39 which is screwed to the male screw portion 15c of the push cap 15 on an inner peripheral surface of a lower portion thereof.
  • the pad 20 is adapted to engage with the bush cap 15 and be fixed here, as shown in FIG.
  • the internal thread 39 of the piston head 20 and the external thread 15 c of the bush cap 15 are formed between the piston cap 20 and the bush cap 15 which is a substantial mouth of the container body 12. It is an engaging portion that makes an engagement between them.
  • biston head 20 the aforementioned biston shaft 30 and the shaft case 16 constitute a biston portion 40 of the present invention.
  • the suction pipe 21, the first check valve 23, the bellows 22, and the second check valve 24, which constitute the bellows unite 19, are integrally formed by blow molding or the like. 6.
  • the biston shaft 30 is assembled by press fitting or the like, and the case 17 is attached to the bellows unit 19 with the case 17 extrapolated.
  • the bush cap 15 is attached with the case 17 fixed, and the piston head 20 is attached to the piston shaft 30 to assemble the valve unit 10 according to one embodiment of the present invention. It is formed. Next, a method of using the container 11 having the valve unit 10 having such a configuration will be described.
  • the piston head 20 is pivoted in a predetermined direction with the piston head 20 pulled up, and the piston shaft 30 is rotated by this to lock it.
  • the projection 33 is locked in the locking groove 34 of the shaft case 16.
  • the taper surfaces 33a and 34a are formed on the locking projections 33 and the locking grooves 34, respectively.
  • the slack disappears by further rotation, and the locking projection 33 and the locking groove 34 are firmly locked.
  • the lower opening 25a is closed by the bowl-shaped portion 27a, while the valve body 28 of the second check valve 24 is used to discharge the air in the bellows 22. Is opened, and air is discharged from the discharge port 38 of the piston 20 through the shaft case 16 and the piston shaft 30.
  • the bellows 22 When the bellows 22 is compressed by pushing down the piston head 20 in this way and the air in the bellows 22 is discharged, the inside of the container body 12 becomes negative pressure, but the port of the container body 12 is opened. Since air holes 18 are formed in the bush cap 15 and the case 17 attached to the part 12a, the outside air is taken into the container body 12 by the air holes 18 and the container body 1 The inside of 2 becomes the same as the external pressure (atmospheric pressure). Therefore, the bellows 22 should not be adversely affected by the compression of the bellows 2 or its return. It is becoming.
  • the bellows 22 returns in the extending direction and returns to the state shown in FIG. 1, so that the inside of the bellows 22 becomes negative pressure. Then, the lower opening 25 a of the valve body 27 of the first check valve 23 opens as shown by a two-dot chain line in FIG. 1, whereby liquid is sucked into the bellows 22 from the container body 12. The bellows 22 is filled with liquid.
  • the piston head 20 when not in use, such as during transfer, the piston head 20 is turned in advance in a predetermined direction, that is, in a direction opposite to the direction in which the above-described locking projection 33 and the locking groove 34 are locked.
  • the biston shaft 30 By moving the biston shaft 30 along with it, the engagement between the engagement protrusion 33 and the engagement groove 34 of the shaft case 16 is released.
  • the piston head 20 is pushed down as shown in FIG. 9 and the piston head 20 is put on the bush cap 15. Further, the piston head 20 is rotated in a predetermined direction, and the female screw portion 39 of the piston head 20 is screwed into the male screw portion 15c of the bush cap 15 so that the biston head 20 is engaged with the bush cap 15. Fit together.
  • the biston shaft 30 is engaged with the guide groove 16 a of the shaft case 16. By combining, this shaft can be moved without moving with the shaft case 16. Lower inside the case 16. Then, at the position where the biston head 20 is screwed into and engaged with the bush cap 15, the biston shaft 30 presses the valve element 28 of the second check valve 24 at its lower end, and the valve The lower opening 26a of the chamber 26 is closed. Therefore, as described above, the second check valve 24 is closed by screwing the biston head 20 to the bush cap 15 to engage with the bush cap 15, thereby, for example, when the container body 12 falls down. In addition, the liquid in the container body 12 is prevented from flowing out.
  • the bellows 22 is loaded and compressed by the piston 20. Without being stretched and maintained in a free state. Therefore, the bellows 22 is reliably prevented from being deformed due to being left in a compressed state for a long time.
  • the bellows 2 2 itself functions as a member for storing the liquid, and thereby the liquid in the container main body 12 is sucked out. Therefore, unlike the case where a coil spring is used, a member for containing the liquid is not required, and the number of parts and the number of assembling steps can be reduced.
  • each member can be molded with synthetic resin, it can be disassembled and reused compared to using a steel coil spring, the first check valve, and the second check valve. It will be easier.
  • the piston head 20 (piston shaft 30) is operated by locking the locking portion 35 composed of the locking projection 33 and the locking groove 34. By doing so, the bellows 22 can be easily operated.
  • the locking of the locking portion 35 is released, and the button head 20 is engaged with the push cap 15 serving as the mouth of the container body 12.
  • the second check valve 24 can be fixed in a closed state by the piston shaft 30 by fixing the container here and again.
  • the liquid in the main body 12 can be prevented from flowing out.
  • the bellows 22 expands without being compressed by being loaded. —Because it is maintained in a compressed state, deformation due to being left in a compressed state for a long time is surely prevented.
  • the bellows 22 is made of low-density polyethylene, the thickness of the bellows 22 is set to a predetermined thickness corresponding to the liquid suction capacity X, and the angle 0 formed by the outer surface of the crest 22 d is 80 ⁇ 15. Since the bellows 22 can expand and contract satisfactorily without using a metal coil spring, the bellows 22 can suck the liquid in the container body 12 satisfactorily. As a result, it is possible to avoid the problem of assembling work and the difficulty of separating at the time of recycling, which occur when using a coil spring as in the past, and also reduce the number of parts and the number of assembling steps.
  • the present invention is not limited to the above-described embodiment, and various design changes can be made.
  • the stopper portion between the push cap 15 and the shaft case 16 for preventing the shaft case 16 from rotating in the circumferential direction without hindering the movement in the through direction.
  • the location where the first check valve .23 is formed may be pressed into the lower opening 17a of the case 17 and fixed there.
  • the locking portion 35 is locked by rotating the piston shaft 30 and the shaft case 16 relatively in one direction, or by rotating the piston shaft 30 and the shaft case 16 in the opposite direction.
  • the lock is released, it is possible to prevent the shaft case 16 from rotating and becoming difficult to rotate.
  • the locking portion 35 is also configured by the locking groove 34 and the locking projection 33.
  • the locking portion 35 is configured by a male screw portion and a female screw portion. You may. That is, the locking groove may be formed by a female screw portion, and the locking protrusion may be formed by a male screw portion. Even with such a configuration, it is possible to lock the piston shaft 30 and the shaft case 16 by relatively rotating in one direction and release the locking by rotating in the opposite direction. become.
  • the configuration of the piston portion 40, the shaft case 16, the biston shaft 30, and the biston head 20 do not only consist of the shaft case 16, but additional members are added. Alternatively, other members may be used instead of these members.
  • Bellows 22 were made of four types of linear low-density polyethylene, “Novatech LL (trade name); Nippon Polychem Co., Ltd.” grade UE320.
  • Each of these four types has a liquid suction volume X [cc] of 3 cc, an angle 0 formed by the outer surface of the peak 22 d in the bellows 22 bellows 22 at about 80 °, and a bellows-shaped cylinder.
  • Omm the wall thickness was different between the peak 22d and the valley 22e.
  • the bellows had 15 peaks 22d and the distance between the vertices of adjacent peaks 22d, that is, the width of the valley 22e was 4 mm.
  • the bellows diameter was set to 18.2 mm, and the valley diameter d1 was set to 11.0 mm, 12.9 mm, 15.0 mm, and 16.4 mm. As a result, the ratio (d 1 / d 2) of the valley diameter d 1 to the peak diameter d 2 becomes less than that.
  • Fig. 11 shows the obtained pressing force and response time for the ratio (d1 / d2) of the valley diameter d1 to the peak diameter d2.
  • valve unit according to claim 1 of the present invention is provided with a bellows which itself functions as a member for accommodating a liquid, so that the liquid in the container body can be sucked out by expansion and contraction of the rose. This eliminates the need for a member for containing the liquid as in the case of using a spring, thus reducing the number of parts and the number of assembling steps.
  • each member can be molded with synthetic resin, it can be disassembled and reused compared to using a steel coil spring, the first check valve, and the second check valve. It can be easier.
  • the second check valve can be fixed in a closed state, thereby reliably preventing the liquid in the container main body from flowing out even when the container main body falls, for example. Can be.
  • the biston shaft does not move with the shaft case, even if the piston head is pushed down, the bellows is maintained in an extended free state without being pressed and compressed by the piston. Is done. Therefore, the bellows are reliably prevented from being deformed due to being left in a compressed state for a long time.
  • the locking portion provided between the shaft case and the biston shaft includes a locking groove formed on one of the shaft case and the biston shaft, and a locking groove formed on the other. At least so that the piston and the shaft case are locked by being relatively rotated in the negative direction, and the locking is released by being rotated in the opposite direction. One of them is formed in a tapered shape, so that the locking portion can be easily locked and released by a rotating operation, thereby providing excellent operability.
  • the valve unit according to claim 3 wherein a press-fit portion is formed in an upper portion of the bellows, and the press-fit portion is press-fitted into a shaft case to connect and connect the bellows and the shaft case, and the locking portion is formed in the shaft case. Since the locking groove is formed and the rib for locking the locking groove is provided in the press-fit portion of the bellows, the connection between the shaft case and the bellows can be strengthened. At the same time, liquid leakage between them can be prevented.
  • the valve unit according to claim 5 is connected in a state where the piston head is fitted in the piston shaft, and does not hinder the movement of the shaft case between the push cap and the shaft case passing therethrough.
  • the stopper part is provided to suppress the rotation in the circumferential direction, the locking portion is locked by relatively rotating the biston shaft and the shaft case in one direction, or When the lock is released by rotating in the opposite direction, it is possible to prevent the shaft case from rotating together in the bush cap, making it difficult to perform the rotating operation.
  • the operation of the piston head is hindered by the stopper because the piston head is connected while being fitted to the piston shaft.
  • valve body of the second check valve since the valve body of the second check valve has a bowl-shaped portion that opens toward the downstream side, the valve body of the second check valve is configured such that the liquid tends to flow backward.
  • the bowl-shaped portion is quickly moved in the closing direction under the pressure of the liquid. Also, when not in use, such as during transfer, the locking of the locking portion was released, and the piston head was engaged with the mouth of the container body by the engaging portion and fixed here. Edge Since the valve body of the second check valve has a bowl-shaped portion, the inside thereof is easily pressed by the lower end of the piston shaft, and thus the second check valve is closed. It can be fixed more reliably.
  • the suction pipe, the first check valve, the bellows, and the second check valve are integrally formed, the number of parts and the number of assembling parts can be significantly reduced. it can.
  • the locking portion is fixed to the case fixed to the mouth of the container body and disposed so as to cover the bellows.
  • the piston head is engaged with the mouth of the container body, the piston head is connected to the piston in a state of being fitted into the piston shaft. It is not obstructed by a part of the stopper.
  • the container according to claim 9 of the present invention includes the valve unit according to claim 1 and a container body to which the valve unit is detachably attached, the number of parts and the number of assembling steps can be reduced as a whole container. Can be planned. Further, the biston shaft can prevent the liquid in the container main body from flowing out even when the container main body falls down during non-use such as during transfer. Also, at this time, since the piston shaft does not move with the shaft case, even if the piston head is depressed, the bellows is maintained in an extended free state without a load being applied and compressed by the piston head. Therefore, the bellows are surely prevented from being deformed by being left in a compressed state for a long time.
  • the bellows is made of low-density polyethylene, the thickness of the bellows is a predetermined thickness corresponding to the liquid suction capacity X, and the angle formed by the outer surface of the peak is a predetermined angle.
  • a metal coil spring The bellows expands and contracts well without using it, and therefore the bellows sucks out the liquid in the container body well. Problems and difficulties in sorting during recycling can be avoided, and the number of parts and assembly man-hours can be reduced.
  • the piston case comprises a pipe-shaped piston shaft movably inserted with respect to the piston case, and a piston head connected to the upper end of the piston shaft.
  • An engaging portion for detachably engaging a shaft is provided; an engaging portion engaging with a mouth portion of the container main body and fixed thereto is provided on the biston head; When the stop portion is locked, the lock portion is not locked without interfering with the second check valve, and the biston head is fixed to the container body by the engagement portion.
  • the second check valve is configured to be fixed in a closed state when the second check valve is engaged with and fixed here, so that in normal use, the locking portion is locked. By doing so, the movement of the biston shaft in the shaft case is stopped, the shaft case and the piston shaft are integrated, and the bellows can be easily operated by the piston shaft.
  • the locking of the locking portion is released, and the piston head is engaged with the mouth of the container body by the engaging portion and fixed here.
  • the second check valve can be fixed in a closed state, so that, for example, even when the container main body falls down, the liquid in the container main body can be reliably prevented from flowing out. At this time, the piston shaft does not move with the shaft case.
  • the bellows is maintained in a stretched free state even when the biston head is pushed down, without being loaded and compressed by this. Therefore, the bellows are reliably prevented from being deformed due to being left in a compressed state for a long time.
  • the container according to claim 13 includes the valve unit according to claim 10 and a container body to which the valve unit is detachably attached, the number of parts and the number of assembling steps can be reduced as a whole container. Can be achieved. Further, the piston shaft can prevent the liquid in the container main body from flowing out even when the container main body falls down during non-use such as transfer. Also, at this time, since the piston shaft does not move with the shaft case, even if the piston head is pushed down, the bellows is maintained in an extended free state without being loaded and compressed by the piston. You. Therefore, deformation of the bellows caused by being left in a compressed state for a long time is reliably prevented.

Landscapes

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

Abstract

L'invention concerne une unité de soupape destinée à aspirer un liquide situé à l'intérieur d'un corps principal de récipient, l'unité comprenant un tuyau d'aspiration (21), un soufflet (22), une chemise de tige (16), une tige de piston (30) et une tête de piston (20). Un premier clapet (23) est fixé en amont du soufflet et un second clapet (24) est fixé en aval du soufflet. Une partie de verrouillage (35) est fixée entre la chemise de tige (16) et la tige de piston (30) et sert à les fixer l'une à l'autre. La tige de piston (30) n'interfère pas avec le second clapet (24) lorsque la partie de verrouillage (35) se verrouille, et maintient ledit clapet dans un état fermé lorsque la tête de piston vient au contact du port (12a) du corps principal de récipient, la partie de verrouillage (35) ne se verrouillant pas.
PCT/JP2001/004724 2001-02-14 2001-06-05 Unite de soupape et recipient WO2002064264A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01936848A EP1360995A4 (fr) 2001-02-14 2001-06-05 Unite de soupape et recipient

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2001-37273 2001-02-14
JP2001037273A JP3399930B2 (ja) 2001-02-14 2001-02-14 バルブユニット及び容器
JP2001143822A JP3739669B2 (ja) 2001-05-14 2001-05-14 バルブユニット及び容器
JP2001-143822 2001-05-14

Publications (1)

Publication Number Publication Date
WO2002064264A1 true WO2002064264A1 (fr) 2002-08-22

Family

ID=26609392

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/004724 WO2002064264A1 (fr) 2001-02-14 2001-06-05 Unite de soupape et recipient

Country Status (2)

Country Link
EP (1) EP1360995A4 (fr)
WO (1) WO2002064264A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2720604A1 (es) * 2018-01-23 2019-07-23 Horng Chang Metal Ind Co Ltd Dispositivo de presión para recipiente de alimentos líquidos

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AU2003220863A1 (en) * 2002-03-15 2003-09-29 Advanex Inc. Pump unit and container
US7695122B2 (en) 2005-05-17 2010-04-13 Brother Kogyo Kabushiki Kaisha Ink feeding apparatus and ink jet recording apparatus
CA2567917A1 (fr) * 2006-11-14 2008-05-14 Gotohti.Com Inc. Raccordement de tube de guidage qui supporte l'autoclave pour chambre de piston
DE102008029004A1 (de) * 2007-06-29 2009-01-02 Rpc Bramlage Gmbh Spender zur Ausgabe flüssiger oder pastöser Massen
FR3073756B1 (fr) * 2017-11-21 2020-07-31 Promens Sa Dispositif de distribution avec chambre de dosage a soufflet et clapet d'entree bi-injectes

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US5462208A (en) * 1994-08-01 1995-10-31 The Procter & Gamble Company Two-phase dispensing systems utilizing bellows pumps
JPH1094744A (ja) * 1996-07-29 1998-04-14 Shiseido Co Ltd 容器用ポンプ
JPH1099741A (ja) * 1996-09-26 1998-04-21 Yoshino Kogyosho Co Ltd 液体注出容器

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JPH08511723A (ja) * 1993-06-24 1996-12-10 ザ、プロクター、エンド、ギャンブル、カンパニー 所定の伸縮パターンを持つ伸縮自在のポンプチャンバ
US5561901A (en) * 1994-10-06 1996-10-08 The Procter & Gamble Company Assembly process including severing part of integral collapsible pump chamber

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US5462208A (en) * 1994-08-01 1995-10-31 The Procter & Gamble Company Two-phase dispensing systems utilizing bellows pumps
JPH1094744A (ja) * 1996-07-29 1998-04-14 Shiseido Co Ltd 容器用ポンプ
JPH1099741A (ja) * 1996-09-26 1998-04-21 Yoshino Kogyosho Co Ltd 液体注出容器

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See also references of EP1360995A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2720604A1 (es) * 2018-01-23 2019-07-23 Horng Chang Metal Ind Co Ltd Dispositivo de presión para recipiente de alimentos líquidos

Also Published As

Publication number Publication date
EP1360995A1 (fr) 2003-11-12
EP1360995A4 (fr) 2006-07-19

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