EP2716196B1 - Anti-leakage liquid soap valve structure - Google Patents
Anti-leakage liquid soap valve structure Download PDFInfo
- Publication number
- EP2716196B1 EP2716196B1 EP12187417.6A EP12187417A EP2716196B1 EP 2716196 B1 EP2716196 B1 EP 2716196B1 EP 12187417 A EP12187417 A EP 12187417A EP 2716196 B1 EP2716196 B1 EP 2716196B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- soap
- liquid soap
- liquid
- valve
- air
- 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.)
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Links
- 239000000344 soap Substances 0.000 title claims description 283
- 239000007788 liquid Substances 0.000 title claims description 201
- 238000007599 discharging Methods 0.000 claims description 53
- 239000006260 foam Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 13
- 238000005187 foaming Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000004033 plastic Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 230000005611 electricity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K5/00—Holders or dispensers for soap, toothpaste, or the like
- A47K5/14—Foam or lather making devices
-
- 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
- B05B11/1097—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 with means for sucking back the liquid or other fluent material in the nozzle after a dispensing stroke
Definitions
- the present invention relates to a liquid soap structure, and particularly to a liquid soap valve structure for preventing liquid soap leakage.
- a soap supplying device is categorized into a manual soap discharge type and an automatic soap discharge type.
- a manual soap supplying device usually includes a soap conduit.
- the soap conduit communicates with a liquid soap container as well as a pressure device having a liquid soap pipe.
- the liquid soap pipe includes a pressure receiving section having a liquid soap chamber, a pressure applying section movable relative to the pressure receiving section and to apply pressure to the pressure receiving section, and check valves respectively disposed at two ends of the liquid soap pipe.
- the soap supplying device further includes a press section for a user to press thereupon to further operate the pressure receiving section. By butting the liquid soap chamber in the pressure receiving section through the pressure applying section, liquid soap in the liquid soap chamber is delivered and discharged to a hand of the user along the liquid soap pipe.
- An automatic soap supplying device of the prior art usually incorporates the above manual soap supplying device, which cooperates with an additional motor-driven automatic press device.
- the automatic press device operates at the press section or the pressure applying section, pressure is automatically applied on the pressure receiving section by the pressure applying section to achieve liquid soap supply.
- a soap supplying device having a soap discharge opening facing downwards is developed.
- a check valve device corresponding to a soap discharge opening is usually made of a plastic valve disposed at the soap discharge opening.
- the plastic valve presses tightly against an inner wall of the soap discharge opening.
- the plastic valve disengages from the inner wall to allow the liquid soap to pass through the liquid soap pipe to reach the soap discharge opening.
- the strength of the elastic member needs to be reinforced to render even greater tightness between the plastic valve and the inner wall.
- the increased strength of the elastic valve at the same time raises the level of force that needs to be applied for operating the pressure applying section.
- a motor of a battery-driven automatic soap supplying device may not function properly due to insufficient power from the battery, such that the press section or the pressure applying section is not successfully propelled.
- contact planes of the plastic valve and the soap discharge opening can easily become worn out.
- a gap between the contact planes of the plastic valve and the soap discharge opening is formed such that the liquid soap is guided through the gap to drip via the soap discharge opening.
- the Taiwan Patent No. 579820 discloses a soap supplying device as described above.
- the soap supplying device includes a liquid soap pipe.
- the liquid soap pipe respectively has a liquid soap entrance and a liquid soap exit at two ends thereof.
- the liquid soap pipe includes a roller valve at one end corresponding to the liquid soap entrance, and a plastic valve at one end corresponding to the liquid soap exit.
- the plastic valve is pushed by an elastic member to butt against an inner wall around the liquid soap exit on the liquid soap pipe.
- EP 2 082 809 A relates to a foam pump which defines the closest state of the art and includes a piston housing and a piston assembly received in the piston housing thereby defining a collapsible liquid chamber and a collapsible air chamber.
- the piston assembly includes a premix chamber separated from both the collapsible liquid chamber and the collapsible air chamber by a premix chamber wall and fluidly communicating with both the collapsible liquid chamber and the collapsible air chamber through a mix aperture in the premix chamber wall.
- a biasing member urges the piston assembly to a non-actuated position.
- the foam pump is actuated by urging the piston assembly against the biasing member to an actuated position in which the collapsible air chamber and the collapsible liquid chamber are reduced in volume such that air and foamable liquid are expelled from their respective collapsible air chamber and collapsible liquid chamber through the mix aperture.
- the simultaneous movement of the air and foamable liquid through the mix aperture causes a turbulent mixing thereof.
- the primary object of the present invention is to provide a power-saving liquid soap valve for effectively eliminating liquid soap leakage.
- the elastic washer may be made of a rubber material.
- the soap discharging valve may include a limiting end located at one end of the axle strut relative to the tightening end.
- the air supply valve may include a supporting plate linking with the soap discharging tube and having the air supply channel, and an elastic valve disposed on the supporting plate.
- the elastic valve includes an outer ring pressing against a wall of the outer housing corresponding to the air chamber, and an elastic section covering the air supply channel.
- the elastic valve may be made of a rubber material.
- liquid soap conduit may include an elastic member encircling the soap entering tube and the soap discharging tube.
- liquid soap conduit may include a check valve disposed at the liquid soap entrance.
- the check valve may include a soap entering opening communicating with the liquid soap entrance and the soap entering tube, a stopping member formed at an outer diameter greater than an inner diameter of the soap entering opening, and at least one protruding section disposed in the soap entering opening to support the stopping member.
- the stopping member may be made of a rubber material.
- the elastic washer may include a deformation region surrounding the through hole.
- the foam discharging tube may include a press section, and a pressure applying section linking with the press section to push the air supply valve.
- the foam discharging tube may include a foaming filter disposed at the foam exit.
- the liquid soap exit can be controlled to open or close.
- the liquid soap chamber is pressurized to cause deformation of the elastic washer so that a passage allowing the liquid soap to pass through is generated.
- the elastic washer is made of a rubber material, the liquid soap is more effectively prevented from leaking along the wall of the liquid soap exit.
- the air supply valve of the present invention allows the soap discharging tube to restore to its initial position when being pressed by the elastic member.
- the residual liquid soap at the foam exit and the gas-liquid mixing chamber is sucked back to the air chamber via the air supply channel, thereby preventing the residual liquid soap from dripping to the ground and maintaining tidiness of an operation environment.
- FIG. 1 is a schematic diagram of an anti-leakage liquid soap valve structure according to an embodiment of the present invention cooperating with an automatic soap supplying device.
- an anti-leakage liquid soap valve structure 100 according to an embodiment of the present invention is applied in cooperation with a wall-mounted automatic soap supplying device.
- the wall-mounted automatic soap supplying device includes a liquid soap container 40 and an automatic press device 50.
- the automatic press device 50 is disposed below the liquid soap container 40 and is powered by electricity.
- the liquid soap container 40 includes an accommodating section 41 for accommodating liquid soap 42, and a liquid soap entrance 43 communicating with the accommodating section 41 and facing downwards.
- the automatic press device 50 includes a holding region to hold the anti-leakage liquid soap valve structure 100 of the present invention.
- the automatic press device 50 further includes a holding region formed correspondingly to the liquid soap entrance 43 to hold the anti-leakage liquid soap valve structure 100 and a butting element 51 that is controlled by a driving motor (not shown) to swing up and down.
- a press section 33 is located at one end of the anti-leakage liquid soap valve structure 100 to engage with the butting element 51, thereby forming the automatic soap supplying device with an exit facing downwards.
- FIGS. 2 and 3 show exploded views of an anti-leakage liquid soap valve structure of the present invention
- FIG. 4A shows a schematic diagram of gas-liquid mixture in an anti-leakage liquid soap valve structure of the present invention.
- an anti-leakage liquid soap valve structure 100 of the present invention includes a liquid soap conduit for accommodating the liquid soap 42 in the liquid soap container 40 and discharging the liquid soap 42 by pressure, an air conduit for accommodating air and discharging the air by pressure, and a foam discharging tube 30 for receiving and mixing the liquid soap 42 of the liquid soap conduit and the air of the air conduit to produce a foamed liquid soap.
- the liquid soap conduit includes a soap entering tube 212 communicating with the liquid soap entrance 43 to receive the liquid soap 42, a soap discharging tube 24 communicating with the soap entering tube 212 and having a liquid soap chamber 243 to allow the soap entering tube 212 to push forwards, a liquid soap exit 244 located at one end of the soap discharging tube 24 relative to the liquid soap entrance 43, a soap discharging valve 25, and a positioning member 26 located at the liquid soap exit 244 to clamp the soap discharging valve 25 with the liquid soap exit 244 from two sides.
- the soap discharging valve 25 includes an elastic washer 255 disposed at the liquid soap exit 244, and a pressing member pressing against an inner junction plane of the elastic washer 255.
- the air conduit includes an outer housing 20 encircling the liquid soap conduit to form an air chamber 28 therewith, an air exit located at one side of the air chamber 28, and an air supply valve linking with the soap discharging tube 24 and discharging the air from the air chamber 28 to the air exit 245.
- the outer housing 20 is formed by an upper half 21 and a lower half 21.
- the air supply valve includes at least one air supply channel 242 for discharging the air in the air chamber 28 towards the other side of the air chamber 28.
- the foam discharging tube 30 includes a gas-liquid mixing chamber 311 located at the liquid soap exit 244 and the air exit 245 and formed by an encircling soap chamber wall 31, a foam exit 35 communicating with the gas-liquid mixing chamber 311, and a foaming filter 34 disposed at the foam exit 35.
- the foam discharging tube 30 includes a pressure applying section 32 linking with the press section 33 to push the air supply valve.
- the outer housing 20 includes a limiting section 221 that butts the pressure applying section 32 to limit the pressure applying section 32 within the outer housing 20.
- the liquid soap conduit includes an elastic member 29 encircling the soap entering tube 212 and the soap discharging tube 24.
- the elastic member 29 has two ends butting against the inner wall of the air chamber 28 and connecting to the soap discharging tube 24.
- the elastic washer 255 has a through hole 256.
- the pressing member includes an axle strut 254 penetrating through the through hole 256, a tightening end 251 connected to the axle strut 254 to press against an inner junction plane of the elastic washer 255 corresponding to the liquid soap entrance 43, and a limiting end 257 located at the axle strut 254 relative to the tightening end 251.
- the elastic washer 255 includes a deformation region 258 surrounding the through hole 256 to promote deformation of the elastic washer 255.
- the tightening end 251 includes at least two butting members 252 butting against one side of the elastic washer 255 corresponding to the liquid soap entrance 43, and at least one spacing region 253 formed between the two butting members 252.
- the soap discharging valve 25 of the liquid soap conduit forms an exit for allowing the liquid soap 42 to pass through the deformation thereof.
- the pressing member of the soap discharging valve 25 is pressed to move downwards, and further presses the through hole 256 to deform and expand until the elastic washer 255 contacts the limiting end 257.
- the spacing region 253 between the two butting members 252 communicates with the expanded through hole 256 to form a passage for the liquid soap 42 to pass through.
- the elastic washer 255 is preferably made of a rubber material. As the rubber material expands when being humidified, the elastic washer 255 is able to more steadily fit around the axle strut 254 to prevent the liquid soap 42 from leaking via the through hole 256.
- the liquid soap conduit further includes a check valve 10 disposed at the liquid soap entrance 43.
- the check valve 10 includes a soap entering opening 11 communicating with the liquid soap entrance 43 and the soap entering tube 212, a stopping member 12 formed at an outer diameter greater than an inner diameter of the soap entering opening 11, and at least one protruding section 211 disposed in the soap entering opening 11 to support the stopping member 12.
- the stopping member 12 is preferably made of a rubber material.
- An airtight ring 23 is disposed between the soap entering tube 212 and the soap discharging tube 24 to separate the liquid soap chamber 243 and the air chamber 28.
- the liquid soap 42 in the liquid soap chamber 243 flows towards the liquid soap entrance 43 and the liquid soap exit 244.
- the check valve 10 disposed at the liquid soap entrance 43 moves towards the liquid soap entrance 43 due to the pressure in the liquid soap chamber 243. Since the outer diameter of the stopping member 12 is greater than the inner diameter of the soap entering opening 11, the stopping member 12 blocks on the soap entering opening 11 to allow the liquid soap 42 to flow towards the liquid soap exit 244.
- the air supply valve includes a supporting plate 241 and an elastic valve 27.
- the supporting plate 241 is linked with the soap discharging tube 24, and includes the air supply channel 242.
- the elastic valve 27 includes an outer ring 271 pressing against a wall of the outer housing 20 corresponding to the air chamber 28, and an elastic section 272 covering the air supply channel 242.
- the outer ring 271 presses tightly against the wall of the air chamber 28, such that the air pushes the elastic section 272 covering the air supply channel 242 through the air supply channel 242.
- the elastic valve 27 is preferably made of a rubber material for not only tightly pressing against the wall of the air chamber 28 but also avoiding a wearing issue of hard materials.
- FIGS. 4A to 4C are schematic diagrams of gas-liquid mixture as well as a corresponding gas-liquid mixing path in an anti-leakage liquid soap valve structure of the present invention.
- the pressure applying section 32 butts against the limiting section 221 of the outer housing 20, and the air supply valve and the soap discharging tube 24 linked with the pressure applying section 32 stay at the initial positions.
- the elastic member 29 is dilated, and a check valve at one end of the liquid soap entrance 43 is rested on and supported by the protruding section 211. At least one gap is formed between the check valve and the protruding section 211, so that the liquid soap 42 passes through the gap to fill the liquid soap chamber 243.
- the liquid soap chamber 243 currently does not receive any pressure, the through hole 256 of the soap discharging valve 25 is in contact with the surrounding wall of the axle strut 254, and the liquid soap 42 is confined within the liquid soap chamber 243.
- the pressure applying section 32 is driven by the press section 33 to move upwards to push the air supply valve and to compress the elastic member 29, such that the elastic member 29 is deformed and stores elasticity.
- the soap entering tube 212 exerts pressure to the liquid soap chamber 243 in the soap discharging tube 24.
- the check valve at one end of the liquid soap entrance 43 moves towards the liquid soap entrance 43 and butts on the soap entering opening 11, so that the liquid soap 42 in the liquid soap chamber 243 does not enter the liquid soap container 40.
- the liquid soap 42 when the liquid soap chamber 243 is pressed, the liquid soap 42 is prohibited from moving towards the liquid soap entrance 43. At this time, the liquid soap 42 can only flow towards the liquid soap exit 244 to exert pressure to the soap discharging valve 25.
- the soap discharging valve 25 receives pressure and is affected by the pressing member, it moves downwards to cause deformation of the elastic washer 255, such that the through hole 256 on the elastic washer 255 expands downwards.
- a passage is formed between the spacing region 253 between the butting members 252 on the pressing member and the expanded through hole 256 so as to allow the liquid soap 42 to enter the liquid soap exit 244 via the soap discharging valve 25 and further enter the gas-liquid mixing chamber 311 through the liquid soap exit 244.
- air supply valve moves towards an upper end of the air chamber 28
- air is only allowed to pass through the air supply channel 242 on the supporting plate 241 since the outer ring 271 of the elastic valve 27 presses tightly against the wall of the air chamber 28.
- the air passing through the air supply channel 242 pushes the elastic section 272 covering the air supply channel 242, and is then forwarded towards the air exit 245 to allow the air to enter the gas-liquid mixing chamber 311 to mix with the liquid soap 42.
- the foaming filter 34 disposed on the foam exit 35, the liquid soap 42 is thoroughly mixed with the air to form foamed liquid soap which is then sent to a hand of a user via the foam exit 35.
- FIG. 5 shows a schematic diagram of withdrawing liquid soap 42 by an anti-leakage liquid soap valve structure according to the present invention.
- the liquid soap exit can be controlled to open or close.
- the liquid soap chamber is pressurized to cause deformation of the elastic washer so that a passage allowing the liquid soap to pass through is generated.
- the elastic washer is made of a rubber material, the liquid soap is more effectively prevented from leaking along the wall of the liquid soap exit.
- the air supply valve of the present invention allows the soap discharging tube to restore to its initial position when being pressed by the elastic member.
- the residual liquid soap at the foam exit and the gas-liquid mixing chamber is sucked back to the air chamber via the air supply channel, thereby preventing the residual liquid soap from dripping to the ground and maintaining tidiness of an operation environment.
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Description
- The present invention relates to a liquid soap structure, and particularly to a liquid soap valve structure for preventing liquid soap leakage.
- A soap supplying device is categorized into a manual soap discharge type and an automatic soap discharge type. A manual soap supplying device usually includes a soap conduit. The soap conduit communicates with a liquid soap container as well as a pressure device having a liquid soap pipe. The liquid soap pipe includes a pressure receiving section having a liquid soap chamber, a pressure applying section movable relative to the pressure receiving section and to apply pressure to the pressure receiving section, and check valves respectively disposed at two ends of the liquid soap pipe. The soap supplying device further includes a press section for a user to press thereupon to further operate the pressure receiving section. By butting the liquid soap chamber in the pressure receiving section through the pressure applying section, liquid soap in the liquid soap chamber is delivered and discharged to a hand of the user along the liquid soap pipe. An automatic soap supplying device of the prior art usually incorporates the above manual soap supplying device, which cooperates with an additional motor-driven automatic press device. As the automatic press device operates at the press section or the pressure applying section, pressure is automatically applied on the pressure receiving section by the pressure applying section to achieve liquid soap supply. Further, to adapt to a wall-mounted soap supplying device and habits of hand operations of users, a soap supplying device having a soap discharge opening facing downwards is developed.
- A check valve device corresponding to a soap discharge opening is usually made of a plastic valve disposed at the soap discharge opening. By use of an elastic member, the plastic valve presses tightly against an inner wall of the soap discharge opening. When a press initiated by a user or when an automatic press device is applied, the plastic valve disengages from the inner wall to allow the liquid soap to pass through the liquid soap pipe to reach the soap discharge opening. Although the above structure is suitable for a soap supplying device that discharges the soap in an upward direction, complications are however incurred when implementing the above structure to a soap supplying device that discharges the soap in a downward direction. First of all, the liquid soap in an inverted-style liquid soap container applies a pressure to push the plastic valve due to gravitational force. In order to prevent the liquid soap from leaking through a gap between the plastic valve and the inner wall to drip onto the ground, the strength of the elastic member needs to be reinforced to render even greater tightness between the plastic valve and the inner wall. However, the increased strength of the elastic valve at the same time raises the level of force that needs to be applied for operating the pressure applying section. For example, a motor of a battery-driven automatic soap supplying device may not function properly due to insufficient power from the battery, such that the press section or the pressure applying section is not successfully propelled. Further, in a plug-in automatic soap supplying device that is free of the above issue of insufficient power from the battery, since the plastic valve is in prolonged and constant friction with the soap discharge opening, contact planes of the plastic valve and the soap discharge opening can easily become worn out. Thus, a gap between the contact planes of the plastic valve and the soap discharge opening is formed such that the liquid soap is guided through the gap to drip via the soap discharge opening.
- The Taiwan Patent No.
579820 -
EP 2 082 809 A relates to a foam pump which defines the closest state of the art and includes a piston housing and a piston assembly received in the piston housing thereby defining a collapsible liquid chamber and a collapsible air chamber. The piston assembly includes a premix chamber separated from both the collapsible liquid chamber and the collapsible air chamber by a premix chamber wall and fluidly communicating with both the collapsible liquid chamber and the collapsible air chamber through a mix aperture in the premix chamber wall. A biasing member urges the piston assembly to a non-actuated position. The foam pump is actuated by urging the piston assembly against the biasing member to an actuated position in which the collapsible air chamber and the collapsible liquid chamber are reduced in volume such that air and foamable liquid are expelled from their respective collapsible air chamber and collapsible liquid chamber through the mix aperture. The simultaneous movement of the air and foamable liquid through the mix aperture causes a turbulent mixing thereof. The documentsWO 97/27947A1 EP 1847 327 A ,EP 2 127581A1 andEP 2462852A1 disclose Alternative embodiments of soap dispenser. - Therefore the primary object of the present invention is to provide a power-saving liquid soap valve for effectively eliminating liquid soap leakage.
- The above object is achieved by a liquid soap dispenser according to claim 1.
- Further, the elastic washer may be made of a rubber material.
- Further, the soap discharging valve may include a limiting end located at one end of the axle strut relative to the tightening end.
- Further, the air supply valve may include a supporting plate linking with the soap discharging tube and having the air supply channel, and an elastic valve disposed on the supporting plate. The elastic valve includes an outer ring pressing against a wall of the outer housing corresponding to the air chamber, and an elastic section covering the air supply channel.
- Further, the elastic valve may be made of a rubber material.
- Further, the liquid soap conduit may include an elastic member encircling the soap entering tube and the soap discharging tube.
- Further, the liquid soap conduit may include a check valve disposed at the liquid soap entrance.
- Further, the check valve may include a soap entering opening communicating with the liquid soap entrance and the soap entering tube, a stopping member formed at an outer diameter greater than an inner diameter of the soap entering opening, and at least one protruding section disposed in the soap entering opening to support the stopping member.
- Further, the stopping member may be made of a rubber material.
- Further, the elastic washer may include a deformation region surrounding the through hole.
- Further, the foam discharging tube may include a press section, and a pressure applying section linking with the press section to push the air supply valve.
- Further, the foam discharging tube may include a foaming filter disposed at the foam exit.
- Therefore, through the deformation between the elastic washer and the pressing member of the soap discharging valve, the liquid soap exit can be controlled to open or close. Thus, with only a small force applied to the automatic press device, the liquid soap chamber is pressurized to cause deformation of the elastic washer so that a passage allowing the liquid soap to pass through is generated. Further, as the elastic washer is made of a rubber material, the liquid soap is more effectively prevented from leaking along the wall of the liquid soap exit. Moreover, the air supply valve of the present invention allows the soap discharging tube to restore to its initial position when being pressed by the elastic member. Meanwhile, through the negative pressure in the air chamber, the residual liquid soap at the foam exit and the gas-liquid mixing chamber is sucked back to the air chamber via the air supply channel, thereby preventing the residual liquid soap from dripping to the ground and maintaining tidiness of an operation environment.
- The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.
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FIG. 1 is a schematic diagram according to an embodiment of the present invention cooperating with an automatic soap supplying device. -
FIG. 2 andFIG. 3 are exploded views of an anti-leakage liquid soap valve structure according to the present invention. -
FIGS. 4A to 4C are schematic diagrams of gas-liquid mixture in anti-leakage liquid soap valve structure according to the present invention. -
FIG. 5 is a schematic diagram of liquid soap withdrawal in an anti-leakage liquid soap valve structure according to the present invention. -
FIG. 1 is a schematic diagram of an anti-leakage liquid soap valve structure according to an embodiment of the present invention cooperating with an automatic soap supplying device. Referring toFIG. 1 , an anti-leakage liquidsoap valve structure 100 according to an embodiment of the present invention is applied in cooperation with a wall-mounted automatic soap supplying device. The wall-mounted automatic soap supplying device includes aliquid soap container 40 and anautomatic press device 50. Theautomatic press device 50 is disposed below theliquid soap container 40 and is powered by electricity. Theliquid soap container 40 includes anaccommodating section 41 for accommodatingliquid soap 42, and aliquid soap entrance 43 communicating with theaccommodating section 41 and facing downwards. At a position corresponding to theliquid soap entrance 43, theautomatic press device 50 includes a holding region to hold the anti-leakage liquidsoap valve structure 100 of the present invention. Theautomatic press device 50 further includes a holding region formed correspondingly to theliquid soap entrance 43 to hold the anti-leakage liquidsoap valve structure 100 and abutting element 51 that is controlled by a driving motor (not shown) to swing up and down. Apress section 33 is located at one end of the anti-leakage liquidsoap valve structure 100 to engage with the buttingelement 51, thereby forming the automatic soap supplying device with an exit facing downwards. -
FIGS. 2 and3 show exploded views of an anti-leakage liquid soap valve structure of the present invention;FIG. 4A shows a schematic diagram of gas-liquid mixture in an anti-leakage liquid soap valve structure of the present invention. Referring toFIGS. 2 ,3 and4A , an anti-leakage liquidsoap valve structure 100 of the present invention includes a liquid soap conduit for accommodating theliquid soap 42 in theliquid soap container 40 and discharging theliquid soap 42 by pressure, an air conduit for accommodating air and discharging the air by pressure, and afoam discharging tube 30 for receiving and mixing theliquid soap 42 of the liquid soap conduit and the air of the air conduit to produce a foamed liquid soap. The liquid soap conduit includes asoap entering tube 212 communicating with theliquid soap entrance 43 to receive theliquid soap 42, asoap discharging tube 24 communicating with thesoap entering tube 212 and having aliquid soap chamber 243 to allow thesoap entering tube 212 to push forwards, aliquid soap exit 244 located at one end of thesoap discharging tube 24 relative to theliquid soap entrance 43, asoap discharging valve 25, and a positioningmember 26 located at theliquid soap exit 244 to clamp thesoap discharging valve 25 with theliquid soap exit 244 from two sides. Thesoap discharging valve 25 includes anelastic washer 255 disposed at theliquid soap exit 244, and a pressing member pressing against an inner junction plane of theelastic washer 255. The air conduit includes anouter housing 20 encircling the liquid soap conduit to form anair chamber 28 therewith, an air exit located at one side of theair chamber 28, and an air supply valve linking with thesoap discharging tube 24 and discharging the air from theair chamber 28 to theair exit 245. Theouter housing 20 is formed by anupper half 21 and alower half 21. The air supply valve includes at least oneair supply channel 242 for discharging the air in theair chamber 28 towards the other side of theair chamber 28. Thefoam discharging tube 30 includes a gas-liquid mixing chamber 311 located at theliquid soap exit 244 and theair exit 245 and formed by an encirclingsoap chamber wall 31, afoam exit 35 communicating with the gas-liquid mixing chamber 311, and a foamingfilter 34 disposed at thefoam exit 35. To allow the air supply valve to move within theair chamber 28, and to drive thesoap discharging tube 24 to move relative to thesoap entering tube 212 by the air supply valve, thefoam discharging tube 30 includes apressure applying section 32 linking with thepress section 33 to push the air supply valve. To confine thepressure applying section 32 within theouter housing 20, theouter housing 20 includes a limitingsection 221 that butts thepressure applying section 32 to limit thepressure applying section 32 within theouter housing 20. Further, to enable the air supply valve and thesoap discharging tube 24 to restore to their initial positions, the liquid soap conduit includes anelastic member 29 encircling thesoap entering tube 212 and thesoap discharging tube 24. Theelastic member 29 has two ends butting against the inner wall of theair chamber 28 and connecting to thesoap discharging tube 24. By storing the force applied to thepressure applying section 32, elasticity for restoring thesoap discharging tube 24 and the air supply valve back to their initial positions is provided. - The
elastic washer 255 has a throughhole 256. The pressing member includes anaxle strut 254 penetrating through the throughhole 256, a tighteningend 251 connected to theaxle strut 254 to press against an inner junction plane of theelastic washer 255 corresponding to theliquid soap entrance 43, and a limitingend 257 located at theaxle strut 254 relative to the tighteningend 251. Theelastic washer 255 includes adeformation region 258 surrounding the throughhole 256 to promote deformation of theelastic washer 255. The tighteningend 251 includes at least two buttingmembers 252 butting against one side of theelastic washer 255 corresponding to theliquid soap entrance 43, and at least onespacing region 253 formed between the two buttingmembers 252. With the above configuration, thesoap discharging valve 25 of the liquid soap conduit forms an exit for allowing theliquid soap 42 to pass through the deformation thereof. Thus, when pressure is applied by thesoap entering tube 212 to theliquid soap chamber 243 of thesoap discharging tube 24, the pressing member of thesoap discharging valve 25 is pressed to move downwards, and further presses the throughhole 256 to deform and expand until theelastic washer 255 contacts the limitingend 257. At this time, thespacing region 253 between the two buttingmembers 252 communicates with the expanded throughhole 256 to form a passage for theliquid soap 42 to pass through. To steadily fit theelastic washer 255 around theaxle strut 254, theelastic washer 255 is preferably made of a rubber material. As the rubber material expands when being humidified, theelastic washer 255 is able to more steadily fit around theaxle strut 254 to prevent theliquid soap 42 from leaking via the throughhole 256. - Moreover, to prevent the
liquid soap 42 from reflowing into theliquid soap container 40 via theliquid soap entrance 43 when pressure is applied to thesoap discharging tube 24 by thesoap entering tube 212, the liquid soap conduit further includes acheck valve 10 disposed at theliquid soap entrance 43. Thecheck valve 10 includes asoap entering opening 11 communicating with theliquid soap entrance 43 and thesoap entering tube 212, a stoppingmember 12 formed at an outer diameter greater than an inner diameter of thesoap entering opening 11, and at least one protrudingsection 211 disposed in thesoap entering opening 11 to support the stoppingmember 12. The stoppingmember 12 is preferably made of a rubber material. Anairtight ring 23 is disposed between thesoap entering tube 212 and thesoap discharging tube 24 to separate theliquid soap chamber 243 and theair chamber 28. When pressure is applied by thesoap entering tube 212 to thesoap discharging tube 24, theliquid soap 42 in theliquid soap chamber 243 flows towards theliquid soap entrance 43 and theliquid soap exit 244. At this time, thecheck valve 10 disposed at theliquid soap entrance 43 moves towards theliquid soap entrance 43 due to the pressure in theliquid soap chamber 243. Since the outer diameter of the stoppingmember 12 is greater than the inner diameter of thesoap entering opening 11, the stoppingmember 12 blocks on thesoap entering opening 11 to allow theliquid soap 42 to flow towards theliquid soap exit 244. - To facilitate delivery of the air from the
air chamber 28 to theair exit 245, the air supply valve includes a supportingplate 241 and anelastic valve 27. The supportingplate 241 is linked with thesoap discharging tube 24, and includes theair supply channel 242. Theelastic valve 27 includes anouter ring 271 pressing against a wall of theouter housing 20 corresponding to theair chamber 28, and anelastic section 272 covering theair supply channel 242. When the supportingplate 241 is pressed to move towards an upper end of theair chamber 28, theouter ring 271 presses tightly against the wall of theair chamber 28, such that the air pushes theelastic section 272 covering theair supply channel 242 through theair supply channel 242. Theelastic valve 27 is preferably made of a rubber material for not only tightly pressing against the wall of theair chamber 28 but also avoiding a wearing issue of hard materials. -
FIGS. 4A to 4C are schematic diagrams of gas-liquid mixture as well as a corresponding gas-liquid mixing path in an anti-leakage liquid soap valve structure of the present invention. Referring toFIG. 4A , at an initial state, thepressure applying section 32 butts against the limitingsection 221 of theouter housing 20, and the air supply valve and thesoap discharging tube 24 linked with thepressure applying section 32 stay at the initial positions. At this time, theelastic member 29 is dilated, and a check valve at one end of theliquid soap entrance 43 is rested on and supported by the protrudingsection 211. At least one gap is formed between the check valve and the protrudingsection 211, so that theliquid soap 42 passes through the gap to fill theliquid soap chamber 243. Theliquid soap chamber 243 currently does not receive any pressure, the throughhole 256 of thesoap discharging valve 25 is in contact with the surrounding wall of theaxle strut 254, and theliquid soap 42 is confined within theliquid soap chamber 243. Referring toFIG. 4B , when thepress section 33 receives force from the buttingelement 51 and moves upwards, thepressure applying section 32 is driven by thepress section 33 to move upwards to push the air supply valve and to compress theelastic member 29, such that theelastic member 29 is deformed and stores elasticity. At this time, thesoap entering tube 212 exerts pressure to theliquid soap chamber 243 in thesoap discharging tube 24. The check valve at one end of theliquid soap entrance 43, as affected by the positive pressure in theliquid soap chamber 243, moves towards theliquid soap entrance 43 and butts on thesoap entering opening 11, so that theliquid soap 42 in theliquid soap chamber 243 does not enter theliquid soap container 40. Referring toFIG. 4C , when theliquid soap chamber 243 is pressed, theliquid soap 42 is prohibited from moving towards theliquid soap entrance 43. At this time, theliquid soap 42 can only flow towards theliquid soap exit 244 to exert pressure to thesoap discharging valve 25. As thesoap discharging valve 25 receives pressure and is affected by the pressing member, it moves downwards to cause deformation of theelastic washer 255, such that the throughhole 256 on theelastic washer 255 expands downwards. Thus, a passage is formed between thespacing region 253 between the buttingmembers 252 on the pressing member and the expanded throughhole 256 so as to allow theliquid soap 42 to enter theliquid soap exit 244 via thesoap discharging valve 25 and further enter the gas-liquid mixing chamber 311 through theliquid soap exit 244. Meanwhile, when the air supply valve moves towards an upper end of theair chamber 28, air is only allowed to pass through theair supply channel 242 on the supportingplate 241 since theouter ring 271 of theelastic valve 27 presses tightly against the wall of theair chamber 28. The air passing through theair supply channel 242 pushes theelastic section 272 covering theair supply channel 242, and is then forwarded towards theair exit 245 to allow the air to enter the gas-liquid mixing chamber 311 to mix with theliquid soap 42. Further, with the foamingfilter 34 disposed on thefoam exit 35, theliquid soap 42 is thoroughly mixed with the air to form foamed liquid soap which is then sent to a hand of a user via thefoam exit 35. - In the present invention, to prevent the
residual liquid soap 42 in the gas-liquid mixing chamber 311 from dripping to the ground via thefoam exit 35, the anti-leakage liquidsoap valve structure 100 of the present invention further provides a back-sucked function of theliquid soap 42.FIG. 5 shows a schematic diagram of withdrawingliquid soap 42 by an anti-leakage liquid soap valve structure according to the present invention. When thesoap discharging tube 24 is butted by theelastic member 29 to restore to the initial position, the air supply valve is linked by thesoap discharging tube 24 to push thepressure applying section 32 to restore as well until thepressure applying section 32 butts the limitingsection 221. At this time, due to the negative pressure in theair chamber 28, air sequentially passes through thefoam exit 35, the gas-liquid mixing chamber 311 and theair supply channel 242 to be sucked back to theair chamber 28. Meanwhile, theresidual liquid soap 42 at the gas-liquid mixing chamber 311 and thefoam exit 35 is sucked back to theair chamber 28 along with the air flow. Further, when inner and outer pressures balance, theelastic section 272 butts on theair supply channel 242 to prohibit a small amount ofliquid soap 42 from flowing into the gas-liquid mixing chamber 311. - In conclusion, through the deformation between the elastic washer and the pressing member of the soap discharging valve, the liquid soap exit can be controlled to open or close. Thus, with only a small force applied to the automatic press device, the liquid soap chamber is pressurized to cause deformation of the elastic washer so that a passage allowing the liquid soap to pass through is generated. Further, as the elastic washer is made of a rubber material, the liquid soap is more effectively prevented from leaking along the wall of the liquid soap exit. Moreover, the air supply valve of the present invention allows the soap discharging tube to restore to its initial position when being pressed by the elastic member. Meanwhile, through the negative pressure in the air chamber, the residual liquid soap at the foam exit and the gas-liquid mixing chamber is sucked back to the air chamber via the air supply channel, thereby preventing the residual liquid soap from dripping to the ground and maintaining tidiness of an operation environment.
- While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims cover all embodiments which do not depart from the scope of the invention, as defined by their wording.
Claims (12)
- A liquid soap dispenser, comprising an anti-leakage liquid soap valve structure (100) and a liquid soap container (40) connected to the anti-leakage liquid soap valve structure (100); the liquid soap container (40) including an accommodating section (41) for accommodating liquid soap (42), and a liquid soap entrance (43) communicating with the accommodating section (41) and facing downwards; the anti-leakage liquid soap valve structure being characterized by:a liquid soap conduit, comprising:a soap entering tube (212), communicating with the liquid soap entrance (43) to receive the liquid soap (42);a soap discharging tube (24), communicating with the soap entering tube (212), including a liquid soap chamber (243) to allow the soap entering tube (212) to push forwards, and a liquid soap exit (244) located at one end of the soap discharging tube (24) relative to the liquid soap entrance (43); anda soap discharging valve (25), including an elastic washer (255) disposed at the liquid soap exit (244), and a pressing member pressing against an inner junction plane of the elastic washer (255),an air conduit, comprising:an outer housing (20), encircling the liquid soap conduit to form an air chamber (28) therebetween;an air exit (245), located at one side of the air chamber (28); andan air supply valve, linking with the soap discharging tube (24), discharging air from the air chamber (28) to the air exit (245), including at least one air supply channel (242) to discharge the air from the air chamber (28) to another side of the air chamber (28); anda foam discharging tube (30), comprising:wherein the elastic washer (255) comprises a through hole (256); the pressing member comprising an axle strut (254) penetrating through the through hole (256), and a tightening end (251) connected to the axle strut (254) to press against an inner junction plane of the elastic washer (255) corresponding to the liquid soap entrance (43);a gas-liquid mixing chamber (311), located at the liquid soap exit (244) and the air exit (245); and a foam exit (35), communicating with the gas-liquid mixing chamber (311);
the tightening end (251) comprising at least two butting members (252) butting against one side of the elastic washer (255), and at least one spacing region (253) formed between the at least two butting members (252). - The liquid soap dispenser of claim 1, wherein the elastic washer (255) is made of a rubber material.
- The liquid soap dispenser of either of the claims 1 and 2, wherein the soap discharging valve (25) comprises a limiting end (257) located at one end of the axle strut (254) corresponding to the tightening end (251).
- The liquid soap dispenser of any of the claims 1 to 3, wherein the elastic washer (255) comprises a deformation region (258) surrounding the through hole (256).
- The liquid soap dispenser of any of the claims 1 to 4, wherein the air supply valve comprises:a supporting plate (241), linking with the soap discharging tube (24), including the air supply channel (242); andan elastic valve (27), disposed on the supporting plate (241), including an outer ring (271) pressing a wall of the outer housing (20) corresponding to the air chamber (28), and an elastic section (272) covering the air supply channel (242).
- The liquid soap dispenser of claim 5, wherein the elastic valve (27) is made of a rubber material.
- The liquid soap dispenser of any of the claims 1 to 6, wherein the liquid soap conduit comprises an elastic member (29) encircling the soap entering tube (212) and the soap discharging tube (24).
- The liquid soap dispenser of any of the claims 1 to 7, wherein the liquid soap conduit comprises a check valve (10) disposed at the liquid soap entrance (43).
- The liquid soap dispenser of claim 8, wherein the check valve (10) comprises a soap entering opening (11) communicating with the liquid soap entrance (43) and the soap entering tube (212), a stopping member (12) formed at an outer diameter greater than an inner diameter of the soap entering opening (11), and at least one protruding section (211) disposed in the soap entering opening (11) to support the stopping member (12).
- The liquid soap dispenser of claim 9, wherein the stopping member (12) is made of a rubber material.
- The liquid soap dispenser of any of the claims 1 to 10, wherein the foam discharging tube (30) comprises a press section (33), and a pressure applying section (32) linking with the press section (33) to push the air supply valve.
- The liquid soap dispenser of any of the claims 1 to 11, wherein the foam discharging tube (30) comprises a foaming filter (34) disposed at the foam exit (35).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP12187417.6A EP2716196B1 (en) | 2012-10-05 | 2012-10-05 | Anti-leakage liquid soap valve structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP12187417.6A EP2716196B1 (en) | 2012-10-05 | 2012-10-05 | Anti-leakage liquid soap valve structure |
Publications (2)
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EP2716196A1 EP2716196A1 (en) | 2014-04-09 |
EP2716196B1 true EP2716196B1 (en) | 2014-12-10 |
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EP12187417.6A Active EP2716196B1 (en) | 2012-10-05 | 2012-10-05 | Anti-leakage liquid soap valve structure |
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JP3709996B2 (en) * | 1996-01-31 | 2005-10-26 | エアースプレー・インターナショナル・ビー・ブイ | Aerosol container for dispensing multi-component materials |
TWM291409U (en) * | 2005-11-25 | 2006-06-01 | Yih Tai Galss Ind Co Ltd | Piston device and liquid/gas suction device using the piston device and foam generation device |
US7850049B2 (en) * | 2008-01-24 | 2010-12-14 | Gojo Industries, Inc. | Foam pump with improved piston structure |
US8047403B2 (en) * | 2008-02-08 | 2011-11-01 | Gojo Industries, Inc. | Bifurcated stem foam pump |
ATE490714T1 (en) * | 2008-05-29 | 2010-12-15 | Gojo Ind Inc | PULL POWERED FOAM PUMP |
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