CN218437369U - Induction device placed on water tank of flush toilet - Google Patents

Abstract

The utility model discloses a place induction system on toilet water tank, it includes casing, anion module, automatic button, manual button, speaker, sensing element, control module, power supply unit, fixing base, fixed disk. Implement the technical scheme of the utility model, when someone gets into in the bathroom and near squat pit or closestool near, can trigger sensing element, signal transmission to the controller that senses through sensing element in, rethread controller control sound control module, including a motor, an end cap, a controller, and a cover plate, the anion module, the broadcast music opens automatic flushing and anion and solves sound and stink when like the lavatory, thereby the awkwardness of people has been avoided, easily people use the bathroom more joyfully freely.

Description

Induction device placed on water tank of flush toilet

Technical Field

The utility model relates to a domestic, the public facilities field, a place induction system on toilet tank.

Background

According to the examination 1596 the first practical toilet, a wooden seat with a water tank and a flush valve, was invented by noble john harrington in the uk, and many people have gone under the nearest tree and in the river on the spot. Although harrington invented the toilet, it failed to find widespread use due to the imperfect sewerage system. Until 1861, a plumber in the uk, thomas clarpa, invented an advanced water-saving flush system, and waste discharge did not begin to enter modernization.

The water closet has been prevalent in europe and the united states in the sixty-seven decades of the 20 th century and has been introduced into asian countries such as japan, korea, china, etc. The invention of the flush toilet is an important progress mark of human civilization, and effectively solves the problems that human excrement produced in the toilet pollutes water and civilization.

At present, the traditional toilet equipment is generally of a squatting pot or a sitting toilet type, and a flushing tank is arranged on the rear side of a toilet. The water tank is pressed to flush water, and automatic water replenishing is realized. In order to solve the odor caused by the excrement, an exhaust fan is additionally arranged in the toilet.

However, the water closet has more embarrassment problems in the practical application process. Such as: the toilet can generate the accompanying odor and the unpleasant sound, and the embarrassment problem is brought to the toilet and people around the toilet in places such as home, office, hotel and the like.

Odor: the odor generated when people go to the toilet is diffused to the whole toilet, and although the toilet is provided with the exhaust fan, the exhaust fan generates suction through the rotation of the centrifugal motor to exhaust, the suction leads to the fact that the air flow is necessarily in a linear motion, the linear air flow motion from the exhaust fan to the door gap of the toilet is formed under the influence of the atmospheric pressure, and the odor diffused to the air in the toilet cannot be exhausted, so that even if the toilet is provided with the exhaust fan, the odor of people going to the toilet is the origin of the odor.

The sound is not elegant: when people go to the toilet, the sound generated by the impact of urine on water and the unpleasant sound generated by the intestines and the stomach when people excrete excrement are unavoidable, so that the embarrassing situation is formed for people going to the toilet and people outside the toilet, and more troubles are generated for the old people who partially sleep badly to go to the toilet at night.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a place induction system on toilet tank, can realize automatic flushing, in time wash away the function of stink source, broadcast music to the not enough of prior art. The utility model discloses the device need not change toilet tank facility, and is fixed with the tank lid, and convenient operation can solve current toilet bowl's not enough.

To achieve the above object, according to one aspect of the present invention, there is provided an induction device for placement on a toilet tank: the device comprises a shell, an anion module, an automatic button, a manual button, a loudspeaker, an induction element, a controller module, a power supply device, a fixed seat and a fixed disk, wherein the anion module comprises an anion generator window, an anion generator, an anion releaser and a fan, and the anion modules are electrically connected; the automatic button comprises a motor, a short ejector rod and a fixed disc arranged at the tail end of the short ejector rod; the manual button comprises a long ejector rod and a fixed disc arranged at the tail end of the long ejector rod; the controller module comprises a central controller, a communication module and a sound control module, and the controller modules are electrically connected with each other; the power supply device comprises a battery, a charging module and a power supply management unit, and the power supply devices are electrically connected with each other.

Furthermore, the shell is fixed with the upper end of the flusher through at least four fixed disks distributed below the shell; the negative ion releaser is fixed on the fan in a buckling mode; the fan is connected with the upper end of the shell through a screw or a buckle; the negative ion generator, the controller module, the power supply device and the loudspeaker are connected with the shell through screws or buckles; the fixed seat is connected with the upper part and the rear part of the shell through a nut or a buckle; the automatic button is fixed with a button at the upper end of the flusher through the fixed disk at the tail end of the short ejector rod; the manual button is fixed with another button at the upper end of the flusher through the fixed disc at the tail end of the long ejector rod.

It should be noted that, the fixing manner of the fixing disc includes, but is not limited to, a suction disc type and an adhesive buckle type, and the requirements can be met. The position of the fixed seat can also be at the bottom of the shell, and the fixed seat mainly can fix the motor and the long ejector rod.

Further, the communication module comprises any one or more of a bluetooth module, a Wifi module, a 4G module and a 5G module.

Further, the sensing element comprises any one or more of a gas sensor, an ultrasonic sensor, a sound control sensor, an infrared sensor and an influence sensor; the induction element is positioned in front of the shell; the sensing element and the shell form an angle of 5-45 degrees; the three surfaces of the induction element except the induction surface are provided with anti-interference covers; the induction element is electrically connected with the central controller.

Furthermore, the sound control module comprises a TF card reading module and a USB interface module, so that audio files on the TF card and the USB flash disk device can be conveniently read.

It should be noted that the sound control module may also have a volume adjustment function, and may adjust the volume or turn off the volume.

Furthermore, the anion generator opening on the shell is provided with a plurality of small holes, so that the anion and sound can be conveniently dispersed. The anion generator port and the loudspeaker port are respectively arranged at two ends of the shell.

Further, the starting time of the negative ion generator is equal to or later than the starting time of the fan; the turn-off time of the negative ion generator is equal to or earlier than the turn-off time of the fan. The anion can be dispersed in the air sufficiently, and the effect of removing the peculiar smell can be achieved.

Further, the motor and the fixed seat are fixed through screws; and a spring is arranged between the long ejector rod and the fixed seat. The manual button is pressed and then can be rebounded.

Further, the utility model discloses still include a job scenario:

(1) the standby induction frequency of the induction element is 3 seconds;

(2) the induction element induces that a person enters and then plays music, the induction frequency is 2 min/time, the person plays music, the playing is stopped after no person exists, the music content is designated content or networking playing content, the power of the loudspeaker is less than 5W, and the sound control module can adjust the sound and also can close the sound;

(3) after the infrared sensor or the image sensor senses that a person enters, the ultrasonic sensor enters a working state and does not send an instruction only after or for a short time of staying for 1 to 25 seconds;

(4) leaving the person after staying for 26 to 60 seconds, and sending an instruction a;

(5) the gas sensor stays for more than 61 seconds and enters a working state;

(6) the time is kept for 61 to 240 seconds or the person leaves, and the control distance of the ultrasonic sensor is shortened to 0.4 to 0.6 meter from 61 seconds. The three components are triggered in sequence by a person leaving, a gas sensor and an ultrasonic sensor and send out an instruction a;

(7) staying for 241 to 600 seconds or leaving, and in 241 to 600 seconds, sequentially triggering by a person leaving, a gas sensor and an ultrasonic sensor without repeatedly sending an instruction (only one instruction is received in the same time period);

(8) the gas sensor stops working after staying for 601 seconds, and the volume of music is halved on the same scale;

(9) when the person stays for more than 601 seconds, the ultrasonic sensor enters dormancy after leaving the command a;

the person in the area of the R face leaves and returns to execute the steps of (3) - (9).

Further, the instruction a is a control instruction for the motor and the negative ion module.

Compared with the prior art, the utility model has the following advantages: the product installation is simple, need not change original device, only need place this product in the flushing ware top, aim at button rigidity can.

The utility model discloses product built-in battery can provide power supply for a long time, and when the electric quantity was not enough, someone can remind when getting into the bathroom to charge. When the power is off, the battery can be charged by an external power supply, and the external power supply can be directly used under the condition that the condition allows. Flushing can also be performed manually when there is no power. When a person enters a toilet and approaches a squatting pot or a toilet, the sensing element is triggered, the sensing element transmits a sensing signal to the central controller, and then a piece of music is played through the sound control module and the loudspeaker to cover the sound of using the toilet; when people like the lavatory, response component response stink, timely bath is washed by water, discharges the excrement, and anion module begins work simultaneously, and the stink in the air-purifying gives other people a light joyful experience like the lavatory simultaneously.

Drawings

Fig. 1 is a schematic view of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

Fig. 3 is a structural block diagram of the present invention.

Wherein, 1, a shell; 2. an anion module; 21. a negative ion generator window; 22. an anion generator; 23. a negative ion releaser; 24. a fan; 3. an automatic button; 31. a motor; 32. a short ejector rod; 4. a manual button; 41. a long ejector rod; 51. a speaker port; 52. a speaker; 6. an inductive element; 61. a gas sensor; 62. an ultrasonic sensor; 63. a voice-controlled sensor; 64. an infrared sensor; 65. an image sensor; 7. a controller module; 71. a central controller; 72. a communication module; 721. a Bluetooth module; 722. a Wifi module; 723. a 4G module; 724. a 5G module; 73. a sound control module; 8. a power supply device; 81. a battery; 82. a charging module; 83. a power management unit; 9. a fixed seat; 10. and (7) fixing the disc.

Detailed Description

The invention will be further described with reference to specific examples, which are intended to be illustrative only and not to limit the scope of the invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents also fall within the scope of the appended claims.

Referring to fig. 1-3, a toilet tank sensor assembly is shown that is simple to install, does not require replacement of the original assembly, and requires the product to be placed over the flush tank and the alignment button to be fixed in position. The utility model discloses product built-in battery can provide power supply for a long time, and when the electric quantity was not enough, someone can remind when getting into the bathroom to charge. When the power is off, the external power supply can be used for charging the battery, and the external power supply can be directly used under the condition of permission.

Specifically, the device comprises a shell 1, an anion module 2, an automatic button 3, a manual button 4, a loudspeaker 52, an induction element 6, a controller module 7, a power supply device 8, a fixed seat 9 and a fixed disk 10, wherein the anion module 2 comprises an anion generator window 21, an anion generator 22, an anion releaser 23 and a fan 24, and the anion module 2 is electrically connected with one another; the automatic button 3 comprises a motor 31, a short ejector rod 32 and a fixed disc 10 arranged at the tail end of the short ejector rod 32; the manual button 4 comprises a long ejector rod 41 and a fixed disc 10 arranged at the tail end of the long ejector rod 41; the controller module 7 comprises a central controller 71, a communication module 72 and a sound control module 73, and the controller modules 7 are electrically connected with each other; the power supply device 8 comprises a battery 81, a charging module 82 and a power management unit 83, and the power supply device 8 is electrically connected with each other.

The power supply device 8 provides a power source for the whole product, the built-in battery 81 can provide power supply for a long time, and when the electric quantity is insufficient, people enter a toilet and are reminded to charge when being sensed. When the power is off, the battery 81 can be charged by an external power supply, and the external power supply can be directly used under the condition that the condition allows.

Wherein the shell 1 plays a supporting role and also wraps all components therein. The anion module 2 plays a role in purifying air and can remove peculiar smell in the air. The fixing plate 10 has a fixing function, the device can be well fixed on the flusher, and the automatic button 3 and the manual button 4 can be well combined with a button on the flusher. The fixing mode of the fixed disc comprises but is not limited to a sucker type and an adhesive buckle type, and the requirements can be met. The electric connection is a circuit board connection or a wire connection mode.

Further, the housing 1 is fixed to the upper end of the flusher by at least four fixing plates 10 distributed below the housing. The mounting plate may provide a good combination of the device with a flush cistern. The negative ion releaser 23 is fixed on the fan 24 in a buckling mode; the fan 24 is connected with the upper end of the shell 1 through screws or buckles. The fan 24 is a miniature silent fan, and is used for better dispersing the negative ions released by the negative ion releaser 23 into the air so as to achieve the effect of removing odor. The anion generator 22, the controller module 7, the power supply device 8 and the loudspeaker 52 are connected with the shell 1 through screws or buckles. The fixed seat 9 is connected with the upper part and the rear part of the shell 1 through a nut or a buckle, the connection between the fixed seat and the shell is increased, and the button can be more firm and not loosened. The automatic button 3 is fixed with a button at the upper end of the flusher through the fixed disc 10 at the tail end of the short ejector rod 32. The manual button 4 is fixed with another button at the upper end of the flusher through the fixed disc 10 at the tail end of the long ejector rod 41.

It should be noted that the fixing manner may be a snap-in type, a screw-in type, a combination of the two types, or other types of fixing manners, such as an adhesive type, a pull-out type, a rope binding or a band binding manner. The position of the fixing seat 9 may also be at the bottom of the housing 1, and mainly functions to fix the motor 31 and the long push rod 41.

Further, the communication module 72 includes any one or more of a bluetooth module 721, a Wifi module 722, a 4G module 723, and a 5G module 724. The communication module 72 provides information updates for the device including firmware updates, voice updates, and the like. The bluetooth module 721 may be connected to a bluetooth device, and may play the content in the bluetooth device to the device via bluetooth. The communication module 72 may also perform networking operations such as playing news, music, etc. The communication module is integrated within the controller module.

Further, the sensing element 6 includes any one or more of a gas sensor 61, an ultrasonic sensor 62, a sound control sensor 63, an infrared sensor 64, and an influence sensor 65; the inductive element 6 is located in front of the housing 1; the induction element 6 and the shell 1 form an angle of 5-45 degrees; three sides of the sensing element 6 except the sensing surface are provided with anti-interference covers, so that the accuracy and the service life of the sensing element 6 are improved, and meanwhile, the sensing element 6 can be prevented from being interfered by negative ions. The sensing element 6 is electrically connected with the central controller 71. The gas sensor 61 is used for sensing odor in the air, and an ammonia gas sensor head, a VOC sensor head, a hydrogen sulfide sensor head and the like can be integrated in the gas sensor. When the gas sensor 61 senses that the gas exceeds the set limit, the central controller 71 receives a command to turn on the anion module 2 for deodorization. Meanwhile, if the other sensors determine that the toilet is in a squatting position or the toilet is occupied, the central controller 71 will send a command to the motor 31 to perform intermittent flushing operation. The ultrasonic sensor 62, the infrared sensor 64, and the image sensor 65 are used to determine the activity of the person, and the corresponding sensors start to operate when the person starts to enter the range of the sensors until the person leaves the sensing range of the sensors. The sound control sensor 63, the sound control module 73 and the central controller 71 work synchronously, and can be used for adjusting the playing volume of music or sending a sound instruction and the like.

The sound control module 73 includes a TF card reading module and a USB interface module. Corresponding hole sites are formed in the shell 1 of the TF card reading module and the USB interface module, so that the TF card and the USB equipment can be conveniently inserted, and audio files on the TF card and the USB equipment can be read.

It should be noted that the sound control module may also have a volume adjustment function, and may adjust the volume or turn off the volume.

Further, the window of the negative ion generator on the housing 1 has a plurality of small holes on the speaker port 51. The appearance is attractive, and meanwhile, the negative ions and the sound are convenient to disperse. The ionizer window 21 and the speaker port 51 are respectively provided at both ends of the housing 1. The arrangement is to avoid negative ions from interfering the loudspeaker and influencing the sound quality of the played music. Meanwhile, the negative ion module 2 is separated from the inductor element 6,

further, the activation time of the negative ion generator 22 is equal to or later than the activation time of the fan 24; the anion generator 22 is turned off for a time equal to or earlier than the turn-off time of the blower 24. This can sufficiently disperse negative ions into the air.

Further, the motor 31 and the fixed seat 9 are fixed by screws; a spring is arranged between the long ejector rod 41 and the fixed seat 9. The automatic button 3 is for decorating, and the manual button 4 will kick back after being pressed down, so that the device is convenient to use and power-off, or the flushing operation can be normally carried out when the device is closed, and the function of the original flusher is not influenced.

The present invention is further described below by way of specific implementation scenarios.

(1) The standby induction frequency of the induction element 6 is 3 seconds;

(2) the sensing element 6 senses that a person enters and then plays music, the sensing frequency is 2 min/time, the person plays music, the person stops playing after no person exists, the music content is designated content or networking playing content, the power of the loudspeaker 52 is less than 5W, the sound control module 73 can adjust the sound and can also close the sound;

(3) after the infrared inductor 64 or the image inductor 65 induces that a person enters, the ultrasonic inductor 62 enters a working state and does not send an instruction only after or for a short time of staying for 1 to 25 seconds;

(4) after staying for 26 to 50 seconds, the person leaves, and a control instruction for the motor 31 and the anion module 2 is sent out;

(5) the gas sensor 61 stays for more than 51 seconds and enters a working state;

(6) the time for the ultrasonic sensor 62 to stay for 51 to 240 seconds or the person leaves, and the control distance of the ultrasonic sensor 62 is shortened to 0.4 to 0.6 meter from 51 seconds. The three components are triggered in sequence by the gas sensor 61 and the ultrasonic sensor 62 when people leave, and send out control instructions to the motor 31 and the anion module 2;

(7) the person stays for 241 to 600 seconds or leaves, and in 241 to 600 seconds, the person leaves, the gas sensor 61 and the ultrasonic sensor 62 are sequentially triggered as a principle, but the instruction is not repeatedly sent out (only one instruction is received in the same time period);

(8) stopping for 601 seconds until the gas sensor 61 stops working;

(9) when the person stays for more than 601 seconds, the control instruction for the motor 31 and the anion module 2 is sent out, and the ultrasonic sensor 62 enters the dormancy state;

the person in the area of the R face leaves and returns to execute the steps of (3) - (9).

It should be noted that the above scenario is only one of the work scenarios, and the utility model can redesign the scenario by modifying the program, and can drive more functions.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

This is done in accordance with the above embodiment.

When a person enters a toilet, the infrared sensor 64 senses that the sound control module 73 starts playing music and approaches or passes through the toilet, the continuous stay time is not more than 25 seconds, the central controller 71 does not give an instruction to the motor 31, and only the music is played;

when a person enters a toilet, the infrared sensor 64 senses that the sound control module 73 starts playing music, and when the person approaches a toilet and stays for more than 25 seconds, the central controller 71 judges that the person urinates, and sends an instruction to the motor 31 to automatically flush after the person leaves at any time between 25 and 50 seconds;

when the person leaves after not leaving and staying for 51 to 240 seconds, the central controller 71 judges that the person is in a defecation behavior, immediately starts the gas sensor 61 to monitor odor in the air, sends an instruction to the motor 31 if the odor concentration is greater than a system set value, starts flushing water to flush away the source feces of the odor, and reduces the odor of the toilet to the maximum extent; if the person does not leave the gas sensor 61 or send a signal within 240 seconds, the central controller 71 also sends a command to the motor 31 to start flushing water to flush away the excrement so as to reduce the odor in the air; if the person leaves at any time point within 51-240 seconds, the motor 31 is directly flushed by water after being instructed. The system also defaults that the principle of triggering within 51 to 240 seconds by taking the sequence of the departure of a person, the gas sensor 61 and the time period as a rule is that the triggering is performed at most twice in the same time period, for example, the triggering is performed by the gas sensor 61 in any time period 61 or 72 seconds, and the triggering is performed again after the departure of the person in 225 or 236 seconds;

and when the person leaves after not leaving and continuing to stay for 241 to 600 seconds, the central controller 71 continues to judge that the person is in the defecation behavior. The central controller 71 continues to default to trigger within 241 to 600 seconds by taking the sequence of the departure of the person, the gas sensor 61 and the time period as a principle, and the triggering is performed at most twice in the same time period, for example, the gas sensor 61 is triggered in any time period such as 242 and 352 seconds, or the departure of the person is triggered once again in 584 seconds;

when the person does not leave and stays for more than 600 seconds until the person leaves, the embarrassing volume for using the toilet is reduced, and the volume of the music is reduced at the same time compared with the previous volume so as to ensure the experience of using the toilet;

when the person does not leave and stays for more than 600 seconds until the person leaves, the central controller 71 continues to judge that the person is in the stool behavior and constipation may occur. The central controller 71 continues to default to the principle of triggering by leaving people for over 600 seconds, and triggers at most twice, for example, people leave the trigger for over 600 seconds in any time period such as 735 and 846 seconds, and if the trigger is continued, constipation symptoms may occur, such feces are difficult to clean by flushing once, and the feces are flushed once after 20 seconds after the people leave;

the above-described trigger is to instruct the motor 31 to flush.

Whether go to the lavatory is confirmed to the judgement to dwell position, time through the entering of monitoring people, and according to the time quantum sensing signal of difference, judge and react like the lavatory condition and make difference again, let the music cover the awkward sound like the lavatory, let the source of in time washing by water and washing away the stink alleviate like the stink behind the lavatory, give people a light joyful more free experience like the lavatory.

The utility model discloses gain effect: the product installation is simple, need not change original toilet's water tank device, only need place this product in the flusher top, aim at button rigidity can. The utility model discloses product built-in battery can provide power supply for a long time, and when the electric quantity was not enough, someone can remind when getting into the bathroom to charge. When the power is off, the external power supply can be used for charging the battery, and the external power supply can be directly used under the condition of permission. When a person enters a toilet and approaches a squatting pot or a toilet, the sensing element is triggered, the sensing element transmits a sensing signal to the central controller, and then a piece of music is played through the sound control module and the loudspeaker to cover the sound of using the toilet; when people like the lavatory, response component response stink, timely bath is washed by water, discharges the excrement, and anion module begins work simultaneously, and the stink in the air-purifying gives other people a light joyful experience like the lavatory.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. An induction device for placement on a toilet tank, comprising: the device comprises a shell (1), an anion module (2), an automatic button (3), a manual button (4), a loudspeaker port (51), a loudspeaker (52), an induction element (6), a controller module (7), a power supply device (8), a fixed seat (9) and a fixed disk (10), wherein the anion module (2) comprises an anion generator window (21), an anion generator (22), an anion releaser (23) and a fan (24), and the anion modules (2) are electrically connected; the automatic button (3) comprises a motor (31), a short ejector rod (32) and a fixed disc (10) arranged at the tail end of the short ejector rod (32); the manual button (4) comprises a long ejector rod (41) and a fixed disc (10) arranged at the tail end of the long ejector rod (41); the controller module (7) comprises a central controller (71), a communication module (72) and a sound control module (73), and the controller modules (7) are electrically connected with each other; the power supply device (8) comprises a battery (81), a charging module (82) and a power supply management unit (83), and the power supply device (8) is electrically connected with one another.

2. An induction device to be placed on a toilet tank according to claim 1, characterized in that said housing (1) is fixed to the upper end of the flushing device by at least four of said fixed plates (10) distributed under the housing (1); the negative ion releaser (23) is fixed on the fan (24) in a buckling manner; the fan (24) is connected with the upper end of the shell (1) through a screw or a buckle; the anion generator (22), the controller module (7), the power supply device (8), and the loudspeaker (52) are connected with the shell (1) through screws or buckles; the fixed seat (9) is connected with the upper part and the rear part of the shell (1) through a nut or a buckle; the automatic button (3) is fixed with a button at the upper end of the flusher through the fixed disk (10) at the tail end of the short ejector rod (32); the manual button (4) is fixed with another button at the upper end of the flusher through the fixed disc (10) at the tail end of the long ejector rod (41).

3. A sensing device for placement on a toilet tank as claimed in claim 1, characterized in that the communication module (72) comprises any one or more of a bluetooth module (721), a Wifi module (722), a 4G module (723) and a 5G module (724).

4. A sensing device to be placed on a toilet tank according to claim 1, characterized in that the sensing element (6) comprises any one or more of a gas sensor (61), an ultrasonic sensor (62), a sound control sensor (63), an infrared sensor (64), an image sensor (65); the induction element (6) is positioned in front of the shell (1); the induction element (6) and the shell (1) form an angle of 5-45 degrees; the three surfaces of the induction element (6) except the induction surface are provided with anti-interference covers; the induction element (6) is electrically connected with the central controller (71).

5. A sensing device to be placed on a toilet tank according to claim 1, wherein the voice control module (73) comprises thereon a TF card reading module or a USB interface module.

6. A sensing device for placement on a toilet tank as claimed in claim 1 wherein said anion generator window (21) of said housing (1) has a plurality of small holes in said speaker port (51); the anion generator window (21) and the loudspeaker port (51) are respectively arranged at two ends of the shell (1).

7. The induction device placed on a toilet tank according to claim 2, wherein said anion generator (22) is activated at a time equal to or later than the activation time of said blower (24); the turn-off time of the negative ion generator (22) is equal to or earlier than the turn-off time of the fan (24).

8. An induction device to be placed on a toilet tank according to claim 2, characterised in that said motor (31) is fixed to said holder (9) by means of screws; a spring is arranged between the long ejector rod (41) and the fixed seat (9).

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