CN101769006B - Concealed induction device and urinal equipped therewith - Google Patents
Concealed induction device and urinal equipped therewith Download PDFInfo
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- CN101769006B CN101769006B CN2010101194773A CN201010119477A CN101769006B CN 101769006 B CN101769006 B CN 101769006B CN 2010101194773 A CN2010101194773 A CN 2010101194773A CN 201010119477 A CN201010119477 A CN 201010119477A CN 101769006 B CN101769006 B CN 101769006B
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Abstract
The invention discloses a urinal equipped with a concealed induction device, which comprises the concealed induction device, a battery providing a power supply and an electromagnetic valve for water control. Wherein the concealed induction device comprises a control unit for signal processing, a microwave sensor that is controlled by the control unit and detects the existence or leaving of a human body, and a conductivity sensor for detecting urine. An electrode of the conductivity sensor is arranged below the liquid level of a siphon of the urinal, and the microwave sensor is arranged at the rear part of a ceramic piece of the urinal. After the conductivity sensor detects the urine, the microwave sensor is turned on by the control unit and notifies the control unit to open the electromagnetic valve for flushing when detecting the leaving of the human body. The urinal equipped with the concealed induction device has more ideal and reliable induction effects.
Description
[technical field]
The present invention relates to a kind of urinal that is used for cleaning the concealed induction installation of closet and concealed induction installation is installed.
[background technology]
In the prior art, in order to make the working automation of the clean closet body after going to toilet, traditional technology is the human detection sensor that infrared sensor etc. is set on closet.Yet the induction window that this traditional infrared sensor need expose not only influences attractive in appearance and maintenance, and more has following defective:
On the one hand, the most of active type infrared induction mode that adopts of this traditional infrared inductor, promptly infrared transmitter is launched the infrared rays of certain wavelength, after the human body reflection, after the infrared remote receiver reception, judge this reflected signal strength, realize that induction is judged automatically.Yet some materials low to the infrared reflection rate (as black clothes, hair etc.) just are difficult to realize that induction is judged automatically.After the infrared light of infrared transmitter reflects through those materials, have only the IR of only a few to be received by infrared remote receiver.Since the insufficient strength of reflected signal, and cause inductor can't judge whether that object exists, thereby cause responding to malfunctioning.
On the other hand,, detect the user once more and leave, will flow out a certain amount of clean water, clean closet when this traditional infrared inductor detects the user above behind the certain hour.Yet, this system that cleans automatically according to having or not of human body, no matter whether the user has and goes to toilet or also no matter what of urine amount all can be gone out a certain amount of water, therefore can cause very big waste.
The variation of electrical conductivity of water in the trap of urinal has appearred in the prior art detecting by conductivity sensor subsequently.Because urine is different with electrical conductivity between the tap water.When urine, the electrode of conductivity sensor contacts with urine, and detected electrical conductivity can change, and therefore judges have urine to enter, thus the bath of control urinal.
Further, three electrodes have also appearred being provided with in prior art in the urinal trap, and by the urine concentration distributional difference between the detecting electrode, decide the bath method on opportunity.When the balance of voltage between the electrode, promptly by the balance of anuria state at the beginning, to the imbalance that has after the urine, during the balance after urine is evenly distributed, this conductivity sensor is identified as the user and has stopped urine, and then the control bath again.This conductivity sensor has solved the deficiency that the traditional infrared sensor need be responded to window, has also overcome the traditional infrared sensor malfunctioning defective of material induction to reflectivity.
Yet, when the user because of prostatitis or other special circumstances, stand in urinal for a long time before, the urinal of this conductivity sensor is installed can under the situation that the user does not also leave, be just washed by water.On the one hand, such situation can cause user's discomfort, can think also that on the other hand this urinal induction is malfunctioning by mistake.Further, the bath time of this conductivity sensor needs manual the setting, can't decide discharging quantity of water according to amount of urine.
In order to overcome the deficiency of conductivity sensor, a kind of microwave induced urinal that utilizes has appearred again in the prior art.Its cardinal principle be microwave induced signal computing obtains the frequency spectrum of the induced signal of human body and urine through Fourier, thereby judge the existence of the length of urine and human body or leave.Further, by calculating control bath opportunity and discharging quantity of water.
Yet this microwave induced urinal utilizes the Fourier computing need take bigger energy consumption, and general No. five or No. seven batteries can't satisfy the demand of its energy consumption, must adopt alternating current to use.Therefore, this microwave induced urinal is advocated energy-conservation environmental protection concept in the incompatibility bathroom field on the one hand, this microwave induced urinal is installed on the other hand need could be used by alternating current is installed, and therefore can't extensively be promoted.
How to develop a kind of more energy-conservation, practical closet induction installation and the closet of this induction installation is installed, become the emphasis of industry institute common concern.
[summary of the invention]
Technical problem to be solved by this invention is to provide a kind of urinal of the concealed induction installation of installation of reliable, low energy consumption.
Technical problem to be solved by this invention can be achieved through the following technical solutions: a kind of urinal with concealed induction installation comprises concealed induction installation, the battery of power supply and the electromagnetic valve of control water outlet is provided.Wherein said concealed induction installation comprises that the control module of handling in order to signal, controlled unit controls human body exist or microwave remote sensor that leaves and the conductivity sensor that detects urine.The electrode of described conductivity sensor is installed on below the liquid level of urinal siphon bend, and microwave remote sensor is installed on the rear portion of urinal ceramic member.After conductivity sensor had detected urine, the controlled unit of microwave remote sensor was opened and after detecting human body and leaving, the notice control module is opened electromagnetic valve and washed by water.
Further, described electrode is that bipolar electrode detects electrical conductivity, has judged whether urine according to electrical conductivity.
Further, set the electrical conductivity preset value, when electrical conductivity is higher than this preset value, be judged as urine.
Further, it is characterized in that: calculate urine concentration according to conductivity meter, be converted to discharging quantity of water.Be provided with like this, make this concealed induction installation intelligent more, and be beneficial to water saving.
Further, the following A=aL of the relation of urine concentration and electrical conductivity
2+ bL, wherein A is a urine concentration, and L is an electrical conductivity, and a, b are coefficient.
Further, after conductivity sensor detected urine electrical conductivity balance, the notice control module was opened the microwave sensor sensing human body.Be provided with like this, make inductive effects more reliable, comfortable, prevent the generation of situation such as misoperation.
Further, be provided with certain value, the urine conductivity variations value that the N continuous point sampling arrives then is judged to be balance less than this definite value, and wherein N is more than or equal to 2.
Further, conductivity sensor is having the detection frequency under the urine state low in the detection frequency ratio under the anuria state.Be provided with like this, can avoid unnecessary power wastage, be beneficial to economize on electricity.
Further, two electrodes are positioned at same level height.
Further, conductivity sensor has self-learning function.
Further, microwave remote sensor has the gain amplifier adjustment circuit that can adjust distance of reaction and induction range.
Technical problem to be solved by this invention also can be achieved through the following technical solutions: a kind of urinal with concealed induction installation comprises concealed induction installation and the electromagnetic valve of controlling water outlet.Wherein said concealed induction installation comprises that the control module of handling in order to signal, controlled unit controls human body exist or microwave remote sensor that leaves and the conductivity sensor that detects urine.The electrode of described conductivity sensor is installed on below the liquid level of urinal siphon bend.After conductivity sensor had urine by the judgement of detection electrical conductivity, the notice control module was opened microwave remote sensor.Described microwave remote sensor is installed on the urinal or urinal is beneficial to the position that human body is moved on every side.After microwave remote sensor detected human body and leaves, the notice control module was opened electromagnetic valve and is washed by water.
Further, conductivity sensor has judged whether urine according to the detected conductivity variations of electrode.
Further, it is characterized in that: after conductivity sensor detected urine electrical conductivity balance, the notice control module was opened the microwave sensor sensing human body.
Compared with prior art, the induction mode of the present invention by conductivity sensor is combined with microwave remote sensor realized under the prerequisite of concealment effect, makes that the inductive effects of concealed induction installation is more reliable, comfortable; And can realize water saving, low-power consumption, satisfy technology trends.And after should concealed induction installation being applied on the urinal, can make that the more automatic inductive effects of urinal is desirable more, the outward appearance of urinal also can be more attractive in appearance.
[description of drawings]
Fig. 1 is concealed induction installation of the present invention and framework schematic diagram that concealed induction installation urinal is installed.
Fig. 2 is the framework schematic diagram of the conductivity sensor of the concealed induction installation of the present invention.
Fig. 3 is the conductivity sensor alternating source circuit diagram of the concealed induction installation of the present invention.
Fig. 4 is the structural representation that concealed induction installation urinal is installed.
Fig. 5 is the concealed induction installation working state schematic representation of the present invention.
[embodiment]
Specifically introduce various embodiment of the present invention with reference to the accompanying drawings, structure or function identical among the figure mark with identical numeral.Should be noted that the purpose of accompanying drawing just is convenient to the explanation to the specific embodiment of the invention, is not a kind of unnecessary narration or limitation of the scope of the invention, and in addition, accompanying drawing there is no need to draw in proportion.
As shown in Figure 1, the concealed induction installation 10 of the present invention comprises the microwave remote sensor 2 of control module (MCU) 1, human body motion and the conductivity sensor 3 that detects urine, but wherein microwave remote sensor 2 perception human bodies or object action.After conductivity sensor 3 detected urine, notice control module 1 was opened microwave remote sensor 2.Further, by moving of microwave remote sensor 2 human body or object, notify control module 1 with monitoring result.Then, by the corresponding closet of control module 1 control executing agency.And the present invention has the urinal 100 of this concealed induction installation except that comprising concealed induction installation 10, also further comprises the electromagnetic valve 5 of supplying cell 4 and control bath.
Specifically, the concealed induction installation 10 of urinal 100 of the present invention drives electromagnetic valve 5 by control module 1 control electromagnetic valve drive circuit and opens and closes by battery 4 power supplies, thus the water outlet of control closet.The electrode detection urine of described conductivity sensor 3 is led testing circuit by electricity and is notified control module 1 with testing result.Control module 1 is judged has the urine back to open microwave remote sensor 2, and microwave remote sensor 2 detects urinal 100 the place ahead users' existence or leaves, by signal processing circuit with result notification control module 1.Control module 1 is judged as the user and leaves, and then further passes through the switch of solenoid valve control circuit control electromagnetic valve 5, thus the water outlet of control urinal 100 or other closets.
The concealed induction installation 10 of the present invention on being applied in the auto-induction urinating device, also can have other application on closet, other executing agencies link with closet, for example control the auto-closing of closet cover plate, when microwave remote sensor perceives after human body leaves control module control cover plate auto-closing.
In addition, the power circuit of the urinal 100 of the concealed induction installation of described the present invention also comprises the battery supply testing circuit.When cell voltage is lower than certain value, think battery life at hand, notice is changed battery.The mode of notice can be the mode of regularly very brief buzzing or long-time buzzing etc.
Wherein, microwave remote sensor 2 is regulated distance of reaction or induction angular range, can adjust according to the application need of reality.For instance, be applied on the urinal 100, distance of reaction (relatively with installation wall facade) usually is adjustable in 20cm～75cm.In another embodiment of the present invention, be 15cm～70cm apart from adjusting range.Again in the embodiment, is 25cm～80cm apart from adjusting range in the present invention.In general, 20cm+/-5cm～75+/-be adjusted into more reasonable and desirable scope in the scope of 5cm.Respond to angular range in the present invention one preferred embodiment, horizontal direction is 25 °, and vertical direction is 35 °.In general, the induction angular range is 25+/-5 ° in the horizontal direction, and ° are advisable in vertical direction 35+/-5.Really, above-mentioned distance of reaction also can be adjusted according to washroom size or actual application environment with the induction angle, is not limited to above-mentioned description scope.
Described microwave sensor 2 also has gain amplifier and adjusts circuit, and the angle of above-mentioned distance of reaction and induction is adjusted.Its cardinal principle is by reducing the microwave signal gain amplifier, can reduce detection range, reducing the detection angle scope simultaneously.Can regulate the door that to avoid the user of the urinal that closes on, moves at switch or the interference of other washroom mobile objects like this according to actual application environment.Can effectively guarantee microwave induced practicality and reliability like this.
As shown in Figures 2 and 3, the detecting electrode of described conductivity sensor 3 is two, and extend into below the detection liquid level.That utilizes pure tap water and urine electrical conductivity differently responds to urine concentration, and system can judge whether bath.
Further, this conductivity sensor 3 can convert urine concentration to by the electrical conductivity that detects urine, and convert out discharging quantity of water according to the relation of the electrical conductivity of utilizing urine and its concentration.Be provided with like this, can intelligence decide discharging quantity of water according to amount of urine.Specifically, urine concentration is big more, and electrical conductivity is high more, and its basic principle formula is approximately A=aL
2+ bL, wherein A is a urine concentration, and L is an electrical conductivity, and a, b are coefficient.After bath finished, conductivity sensor 3 is detectable concentration further, monitoring bath effect.Therefore, conductivity sensor 3 of the present invention can be distinguished the ratio of urine in water, thereby determines what of discharging quantity of water according to the size of urine concentration, and detects the concentration of mixed liquor after bath, realizes the closed-loop control of discharging quantity of water.What relation of concrete urine concentration size and discharging quantity of water can be decided according to actual tests and concrete closet structure.Be provided with like this, can also be beneficial to water saving so that induction is intelligent more.
As shown in Figure 3, described conductivity sensor 3 also has the anti-polarized circuit of electrode.Electrical principle characteristic: adopt alternating source to prevent electrode polarization, switch polarity of electrode, thereby realize the function of anti-electrode polarization with two groups of commutator S.Wherein change-over switch is selected analog switch for use.Solve electrode generating electrodes polarization in the prior art by the polarity that changes electrode, and cause conductivity to descend or malfunctioning problem.
Continue with reference to shown in Figure 3, control module 1 sampling two electrode A point voltage values (being actually the magnitude of voltage between two electrodes) by the electrical conductivity of analog-to-digital conversion liquid that computing is surveyed, thereby draw urine concentration.Here need to prove that what Fig. 3 looked out is that the present invention is preferred embodiment a kind of, the voltage of sampling electrode can be taked multiple mode.The relation of A point voltage sampled value and electrical conductivity need be decided according to concrete circuit design, and design formulas is also not exclusive.Simply, promptly A point voltage sampled value is low more, and then electrical conductivity is high more; Otherwise A point voltage sampled value is high more, and then electrical conductivity is low more.
Fig. 4 is urinal 100 structural representations of the concealed induction installation of the present invention.Wherein, conductivity sensor 3 is installed in siphon bend 102 places of urinal body 101 belows, and conductivity sensor 3 installation sites help urine and respond to fast, and the installation site of conductivity sensor 3 makes electrode surface be difficult for deposit dirt to be advisable simultaneously.Electrode is 6mm in the present invention one preferred embodiment should enough immersion depths being arranged in the sealing liquid face after the installation, in general to be advisable greater than 5mm.In order better to detect effect, two electrodes should keep same level height.
Fig. 5 is the A point voltage sampled value of ordering according to sampling A among Fig. 3, the working state schematic representation in urinal 100 actual uses.We are as can be seen from the schematic diagram of this monitoring:
When no urine, A point voltage sampled value maintains standard value substantially, i.e. the A point voltage sampled value of pure tap water.
When urine entered, conductivity sensor 3 detected and A point voltage sampled value descends rapidly, also was that electrical conductivity uprises.The present invention sets a voltage sample preset value, and when A point voltage sampled value was lower than preset value, MCU had been judged as urine.
When A point voltage sampled value remain unchanged substantially, when reaching balance, MCU is judged as urine and finishes.The determination methods that reaches balance adopts N point balance method (N is more than or equal to 2).In the present invention one preferred embodiment, adopt A point voltage sampled value three point balance methods to determine whether urine finishes, promptly measure the continuous A point voltage sampled value of coming at 3 and remain unchanged or remain unchanged substantially, then think to reach balance.The A point is an equilibrium valve among the figure, and the changing value between 2 before the A point measured A point voltage sampled values and A point is less than certain value.In the present invention one preferred embodiment, the changing value between these 3 is not more than 5, then is judged as 3 balances.Really, also can adjust according to the position of electrode or the environment difference of detection, in another embodiment of the present invention, the changing value between these 3 is not more than 10, then is judged as 3 balances.
After judging A point voltage sampled value balance, MCU opens microwave remote sensor 2.When microwave remote sensor 2 detect do not have human body or object after, wash by water by MCU control open electromagnetic valve 5.According to top description, the amount of bath is decided according to urine concentration, thereby makes urinal 100 intelligent more.Really, the present invention another preferred embodiment in, the present invention also can not adopt according to urine concentration and decide discharging quantity of water, but washes by water with a certain amount of water.
After bath finished, conductivity sensor 3 detected A point voltage sampled value and gets back to normally.
Foregoing description is weighed with A point voltage sampled value and is judged, also can directly weigh with electrical conductivity and judge.As when whether judgement has urine, set the electrical conductivity preset value, when electrical conductivity is higher than this electrical conductivity preset value, be judged as urine.When whether further judging balance as need, be provided with an electrical conductivity definite value, the urine conductivity variations value that N continuous (N is more than or equal to 2) point sampling arrives then is judged to be balance less than this definite value.In fact, A point voltage sampled value reaction electrical conductivity.What A point voltage value was reacted in fact exactly is two interelectrode voltages.Certainly because A point voltage sampled value can produce different values according to concrete circuit is different, the embodiment that Fig. 3 of the present invention looks out for the present invention one preferred embodiment.Therefore, the numerical value that any utilization is associated with electrical conductivity is weighed and is judged, all should be considered to the electrical conductivity is to weigh and judgement, belongs to the scope that the present invention protects.
Really, in another embodiment of the present invention, also can not adopt these 3 balances to judge, adopt or 4 balances at 2.Be provided with like this, make inductive effects more reliable, comfortable, prevent the generation of situation such as misoperation.Certainly, further, also can not adopt equilibrium method to judge in the simple version, promptly conductivity sensor 3 judge urine is arranged after, promptly open microwave remote sensor 2 induction human bodies and exist or leave, carry out subsequent action.
In order to realize the purpose of low energy consumption better, conductivity sensor no urine with have under the urine state, the time cycle of detection is different, is greater than sense cycle under the urine state in the time cycle of detecting under the anuria liquid status.In the present invention one preferred embodiment, be to detect once in 5 seconds under the anuria liquid status; Have under the urine state is to detect once in 1 second.The present invention another preferred embodiment in, be to detect once in 6 seconds under the anuria liquid status; Have under the urine state is to detect once in 2 seconds.
Because the power consumption of conductivity sensor 3 is smaller, detects urine by conductivity sensor 3 and can save power consumption.And conductivity sensor 3 is lower than the detection frequency under the urine state is being arranged in anuria, more can reduce power consumption.And microwave remote sensor 2 relative conductivity sensors, power consumption is higher, only just opens microwave remote sensor 2 after conductivity sensor 3 detects urine, therefore can often open microwave remote sensor 2, and realizes the purpose of low-power consumption.The present invention is by the design of compound induction mode that microwave remote sensor 2 is combined with conductivity sensor 3, and the order induction is more reliable, and realizes low-power consumption, the development trend of adaptive technique.
In addition, the similar conductivity sensor of other that are disclosed in the prior art (as three electrodes etc.) also can combine with microwave remote sensor of the present invention use.And described microwave remote sensor is beneficial to other positions that human body is moved around also can being installed in closet.
Though disclosed the specific embodiment of the present invention above, they are not the limitations of the scope of the invention, know those skilled in the art person the above concrete modifications and variations of implementing is also contained within the scope of the present invention.
Claims (13)
1. the urinal with concealed induction installation is characterized in that: comprise concealed induction installation, the battery of power supply and the electromagnetic valve of control water outlet are provided; Wherein said concealed induction installation comprises that the control module of handling in order to signal, controlled unit controls human body exist or microwave remote sensor that leaves and the conductivity sensor that detects urine; The electrode of described conductivity sensor is installed on below the liquid level of urinal siphon bend, and microwave remote sensor is installed on the rear portion of urinal ceramic member; After conductivity sensor had detected urine, the controlled unit of microwave remote sensor was opened and after detecting human body and leaving, the notice control module is opened electromagnetic valve and washed by water.
2. the urinal with concealed induction installation as claimed in claim 1 is characterized in that: described electrode is that bipolar electrode detects electrical conductivity, has judged whether urine according to electrical conductivity.
3. the urinal with concealed induction installation as claimed in claim 2 is characterized in that: set the electrical conductivity preset value, when electrical conductivity is higher than this preset value, be judged as urine.
4. the urinal with concealed induction installation as claimed in claim 3 is characterized in that: calculate urine concentration according to conductivity meter, be converted to discharging quantity of water.
5. the urinal with concealed induction installation as claimed in claim 4 is characterized in that: the following A=aL of the relation of urine concentration and electrical conductivity
2+ bL, wherein A is a urine concentration, and L is an electrical conductivity, and a, b are coefficient.
6. as the urinal with concealed induction installation of claim 2 to 5 described in any one, it is characterized in that: after conductivity sensor detected urine electrical conductivity balance, the notice control module was opened the microwave sensor sensing human body.
7. the urinal with concealed induction installation as claimed in claim 6 is characterized in that: be provided with certain value, the urine conductivity variations value that the N continuous point sampling arrives then is judged to be balance less than this definite value, and wherein N is more than or equal to 2.
8. the urinal with concealed induction installation as claimed in claim 7 is characterized in that: conductivity sensor is having the detection frequency under the urine state low in the detection frequency ratio under the anuria state.
9. the urinal with concealed induction installation as claimed in claim 2 is characterized in that: two electrodes are positioned at same level height.
10. concealed induction installation as claimed in claim 1 is characterized in that: microwave remote sensor has the gain amplifier that can adjust distance of reaction and induction range and adjusts circuit.
11. the urinal with concealed induction installation is characterized in that: the electromagnetic valve that comprises concealed induction installation and control water outlet; Wherein said concealed induction installation comprises that the control module of handling in order to signal, controlled unit controls human body exist or microwave remote sensor that leaves and the conductivity sensor that detects urine; The electrode of described conductivity sensor is installed on below the liquid level of urinal siphon bend; After conductivity sensor had urine by the judgement of detection electrical conductivity, the notice control module was opened microwave remote sensor; Described microwave remote sensor is installed on the urinal or urinal is beneficial to the position that human body is moved on every side; After microwave remote sensor detected human body and leaves, the notice control module was opened electromagnetic valve and is washed by water.
12. the urinal with concealed induction installation as claimed in claim 11 is characterized in that: conductivity sensor has judged whether urine according to the detected conductivity variations of electrode.
13. the urinal with concealed induction installation as claimed in claim 12 is characterized in that: after conductivity sensor detected urine electrical conductivity balance, the notice control module was opened the microwave sensor sensing human body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101194773A CN101769006B (en) | 2008-10-10 | 2008-10-10 | Concealed induction device and urinal equipped therewith |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101194773A CN101769006B (en) | 2008-10-10 | 2008-10-10 | Concealed induction device and urinal equipped therewith |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810201044.5A Division CN101368401B (en) | 2008-10-10 | 2008-10-10 | Concealed inductor and urinal equipped with the same |
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| Publication Number | Publication Date |
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| CN101769006A CN101769006A (en) | 2010-07-07 |
| CN101769006B true CN101769006B (en) | 2011-10-05 |
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| CN2010101194773A Active CN101769006B (en) | 2008-10-10 | 2008-10-10 | Concealed induction device and urinal equipped therewith |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422557A (en) * | 2012-05-18 | 2013-12-04 | 邱金和 | Structurally modified urinal set |
| CN104775494B (en) * | 2014-05-28 | 2019-01-25 | 厦门优胜卫厨科技有限公司 | A kind of induction type urinal of auto-flushing |
| CN106522330A (en) * | 2016-12-07 | 2017-03-22 | 程棁 | Method and device for automatically washing urinal |
| CN112796394B (en) * | 2020-12-30 | 2022-08-16 | 上海科勒电子科技有限公司 | Microwave inductor and intelligent closestool |
| CN218176026U (en) * | 2022-03-31 | 2022-12-30 | 骊住(中国)投资有限公司 | Modularized induction flushing device for urinal and induction urinal |
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|---|---|---|---|---|
| WO2003021052A1 (en) * | 2001-08-30 | 2003-03-13 | Toto Ltd. | Stool flushing device |
| JP2005163324A (en) * | 2003-12-01 | 2005-06-23 | Toto Ltd | Toilet bowl flushing apparatus |
| JP2005290718A (en) * | 2004-03-31 | 2005-10-20 | Toto Ltd | Urinal |
| CN101230592A (en) * | 2007-12-27 | 2008-07-30 | 上海科勒电子科技有限公司 | Auto-induction urinating bucket |
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2008
- 2008-10-10 CN CN2010101194773A patent/CN101769006B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003021052A1 (en) * | 2001-08-30 | 2003-03-13 | Toto Ltd. | Stool flushing device |
| JP2005163324A (en) * | 2003-12-01 | 2005-06-23 | Toto Ltd | Toilet bowl flushing apparatus |
| JP2005290718A (en) * | 2004-03-31 | 2005-10-20 | Toto Ltd | Urinal |
| CN101230592A (en) * | 2007-12-27 | 2008-07-30 | 上海科勒电子科技有限公司 | Auto-induction urinating bucket |
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