JP3644043B2 - Spitton cleaning equipment - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a spitton cleaning device provided in a dental treatment device.
The dental treatment apparatus is provided with a spitton that receives and discharges water that the patient gargles in the mouth. Since this spitton is contaminated when the patient gargles, it is necessary to wash it with washing water. However, it is desired that automatic water supply to the cup for gargle and water supply for washing in the spitton should be performed in a well-balanced manner.
[0002]
[Prior art]
7 and 8 show the configuration of a conventional dental treatment apparatus, FIG. 7 is a side view, and FIG. 8 is a top view. In both figures, 1 is a water supply pipe for supplying water for gargle, 2 is a spitton for collecting and discharging the water after gargle, 5 is a spittoon washing pipe for discharging water for cleaning the inside of the spittoon, and 4 is for manual operation. A cock, 6 is a medical chair, and K is a cup for gargle.
[0003]
Since the patient needs to gargle in the mouth, the spitton 2 is installed beside the medical chair 6 of the dental treatment apparatus, and is provided with a spit washing pipe 5 having an outlet toward the periphery of the spitn 2 at the periphery thereof. In the past, after a patient gargles, when a spittoon is cleaned, a doctor operates the cock 4 for manual operation to wash the spout 2 by flowing cleaning water.
[0004]
However, in this structure, since the doctor must touch the cock 4 for manual operation, it is unavoidable that the sanitary treatment will be unsanitary.
As a method of improving this, when the patient finishes gargle and returns the cup K to the pan, the water automatically starts to be supplied from the water bottle 1 to the cup K, and at the same time, the washing water is fixed from the spitton pipe 5 A method of cleaning the inside of the Spitton 2 by flowing a quantity is adopted.
[0005]
[Problems to be solved by the invention]
According to the improved method described above, since the doctor does not touch the device each time, it is hygienic, but the amount of water supplied to the cup and the amount of water in the spitone are required at the same time. However, the supply water source in the dental treatment device is limited, and if water is supplied to the cup and spit-washing water from the same water source at the same time, it is avoided that the water amount is biased to one of them and the discharge water amount is unbalanced. I couldn't.
[0006]
In this case, inadequate cleaning of the spitons causes a sanitary problem, and when the water supply to the cup is small, there is a problem that a certain amount of water is required to accumulate.
The present invention realizes a spitton cleaning device capable of automatically performing water supply to a cup and water supply for cleaning inside a spitton while ensuring a sufficient amount of water even when the capacity of the supply water source is relatively small. With the goal.
[0007]
[Means for Solving the Problems]
  The above problems are solved by the present invention described below.
(1) In a spitton cleaning device in a dental treatment device equipped with an automatic water supply mechanism for a cup,
  A cup placement detection unit that detects cup placement by a sensor, a cup water supply control unit that starts water supply based on the detection output of the cup placement detection unit, and performs water supply control for a certain amount, and water supply control for spitton cleaning Spitton cleaning control unit,
  When the water supply control unit detects that the water supply from the cup water supply control unit has ended, the water supply control unit starts the water supply for the spitton cleaning and controls the water to flow out for a predetermined time.When the cup that has been gargleed during Spitton cleaning is placed and the cup water supply starts, the water supply for the spitton cleaning is interrupted by a signal during the cup water supply to give priority to the cup water supply.A spitton cleaning device characterized by that.
[0008]
(2) In a spitton cleaning device in a dental treatment device equipped with an automatic water supply mechanism for a cup,
  A first electrode for detecting the electrical resistance of water at each interval and a water solution dropped to the water supply port and supplied to the cup are arranged at predetermined intervals between the water supply pipe and the water supply port. A second electrode for detecting the electrical resistance of the water column,
  Corresponding to a cup placement detection unit for detecting cup placement by a sensor, a reference voltage corresponding to water quality that generates a plurality of electrical resistance values detected by the first electrode, and an electrical resistance value detected by the second electrode A cup water amount detection control unit that detects the amount of water using a voltage to be applied, and a spitton cleaning control unit that performs water supply control for spitton cleaning,
  When the water supply control unit detects that the water supply from the cup water supply control unit has ended, the water supply control unit starts the water supply for the spitton cleaning and controls the water to flow out for a predetermined time.When the cup that has been gargleed during Spitton cleaning is placed and the cup water supply starts, the water supply for the spitton cleaning is interrupted by a signal during the cup water supply to give priority to the cup water supply.A spitton cleaning device characterized by that.
[0009]
  The basic configuration of the present invention is as shown in FIG.
  In FIG. 1, 10 is a cup placement detection unit, 11 is a cup water supply control unit, 12 is a cup water supply drive unit, 13 is a spitton cleaning control unit, and 14 is a cleaning water supply drive unit. In the following description, the term “water” includes “liquid” including a disinfectant, a fragrance, a disinfectant, and the like.
  The present invention uses a control circuit in which the water supply to the cup and the water supply to the spitton are all electronic, and if there is a cup, always supply a constant amount of water into the cup, and then wash water for a certain period of time. The cleaning is performed.
[0010]
[Action]
When the cup is placed on the tray, the cup placement detection unit 10 generates a detection signal and the cup water supply control unit 11 operates. The cup water supply control unit 11 detects the amount of water and outputs a control signal for driving the cup water supply driving unit 12 when the water amount is less than a certain amount. When a certain amount of water accumulates in the cup, the cup water supply control unit 11 detects this. Control to stop the drive signal for. The cup water supply drive unit 12 opens the water supply valve of the water supply passage to the cup when driven by the drive signal generated from the cup water supply control unit 11, and closes the water supply valve when the drive signal is stopped. Stop water supply.
[0011]
On the other hand, the spitton cleaning control unit 13 receives a signal indicating the driving state (driving state or stopped state) of the cup water supply generated from the cup water supply control unit 11 and performs control, and the cup water supply control unit 12 drives the cup water supply. While the cleaning water supply drive unit 14 is not driven during the operation, a driving signal for starting the cleaning water supply is generated for a predetermined time period when a signal indicating a state where the cup water supply is stopped is input. This drive signal opens the water supply valve of the cleaning water supply passage for cleaning the inside of the spittoon and cleans the inside of the spittoon. After a predetermined time, the drive signal is stopped and the water supply valve is closed.
[0012]
In this way, since the water is supplied to the cup and then the cleaning water in the spitone is supplied, the supply and distribution water is time-series and does not require a large amount of water at the same time. However, when the cup placement unit 10 detects the placement of the cup while cleaning the inside of the spittoon, the cup water supply control unit 11 is activated and the cup water supply drive unit 12 is driven. Immediately stops the driving of the cleaning water supply drive unit 14 and prioritizes the water supply to the cup.
[0013]
【Example】
Based on the above principle configuration, the configuration of the embodiment of the present invention will be described below.
In this embodiment, however, the technology of the automatic liquid supply device (Japanese Patent Application No. 5-312861) previously proposed by the present applicant is used as an automatic water supply device for controlling water supply to the cup. It is obvious that the automatic water supply is not limited to this embodiment, and can be used for a water supply (liquid) device based on other principles.
[0014]
FIG. 2 is an explanatory view of the water supply unit of the automatic water supply device for the cup of the dental treatment apparatus in which the present invention is implemented. FIG. 3 is a side view of a water supply tube of the cup water supply of the dental treatment apparatus in which the present invention is implemented.
4 and 5 are control circuits (part 1) and (part 2) of the embodiment of the present invention. FIG. 4 mainly shows a control circuit for cup water supply, and FIG. It is shown. FIG. 6 is an equivalent circuit diagram showing an electrical connection relationship between the water amount adjusting unit and the water amount detecting unit.
[0015]
In FIG. 2, it is a water supply pipe 3 comprised of a plastic pipe or the like having an insulation resistance of about 40 MΩ, and supplies water (including gargle water and other liquids containing fragrance) from a water supply source. Solenoid valve SV in the middle of this water supply pipe₁By opening and closing this valve, the amount of water supplied to the cup K is adjusted, and a constant amount of gargle water is always supplied to the cup K.
[0016]
Solenoid valve SV₁The electrode T with a predetermined interval in the middle of the water supply pipe 3 exiting₁~ T₄Each electrode is connected to a conductive wire indicated by (1) to (4), and is connected to a portion indicated by the same reference numeral in the control circuit shown in FIG. And electrode T₂・ T₃Electrical resistance value (R_AAnd electrode T₃・ T₄Electrical resistance value (R_BAnd electrode T₁・ T₂Electrical resistance value (R_CThe reference voltage is used as a reference voltage and is guided to one input of a comparator COMP of a water amount detection unit 36, which will be described later, and the water supply amount is always constant regardless of the deviation of the electrical resistance value due to the difference in water quality (liquid quality). Compensate to supply a certain amount of liquid to the cup.
[0017]
Electrode T₄The water supply pipe 3 from the cup side to the cup side is divided into bifurcated water supply pipes 3a and 3b.₅, And at the tip of the other water supply pipe 3b is an electrode T₆And each electrode T₅And electrode T₆Conductive wires (5) and (6) connected to the same are connected to positions indicated by the same reference numerals in the control circuit of FIG. 4 described later, and the electric resistance value R of the water column ejected from the water supply pipe using these two electrodes._ZAnd is guided to the other input of the comparator COMP of the water amount detection unit 36 described later. The electrode T₄, T₆The electrical resistance value of the liquid between (4) and (6) connected to_D) Is detected and used for water volume detection.
[0018]
FIG. 3 shows a side surface of the water supply cylinder 1 of the cup water supply section. A cup K is placed on the tray T, and a bifurcated water supply pipe (3a, 3b in FIG. ) Appears and water is supplied from each tip.
An infrared light emitting diode LED is attached obliquely upward to the base of the arm of the water supply tube 1, and an optical integrated circuit ICp is attached to the tip of its optical axis. It is detected that the shaft is blocked by a part of the cup K and the cup K is placed on the tray T.
[0019]
The control circuit of FIGS. 4 and 5 will be described. 4 and 5 are electrically connected to each other by lead lines indicated by A, B, and C. FIG.
The AC power supply is applied to the terminals 13 and 14 in FIG. 4 and is rectified to DC in the DC power supply unit 31 including the rectifier circuit REC. This DC output is supplied to the DC12V stabilization unit 32 to generate a DC12V stabilized power source that drives the electronic circuit of this embodiment.
[0020]
The AC power is also applied to the drive unit 38 having terminals 13 'and 14' shown in FIG.₁And make contact rl of relay RL₁Constitutes an AC circuit connected in series with make contact rl₁Solenoid valve SV by turning on / off₁Is driven and stopped to control the water supply to the cup K. Further, the AC power supply is applied to the terminals 13 ″ and 14 ″ of the control circuit for spittoon cleaning in FIG. This circuit is a solenoid valve SV₂And the make contact ry of the relay RY constitute an AC circuit, and the solenoid valve SV is turned on and off by the make contact ry.₂Is driven and stopped to control the supply of cleaning water to Spitton.
[0021]
Transistor Q in FIG.₁, Infrared light emitting diode LED, optical integrated circuit ICp and resistor R₁~ R₆Thus, the cup detection unit 33 is formed.
The optical integrated circuit ICp is about 10 KH by the built-in oscillator._ZOscillation to the extent that the output is a resistor R₁, R₂Is output to the transistor Q.₁Transistor Q₁Is about 10KH_ZResistance R₃The infrared light emitting diode LED connected via₁Flashes in response to intermittent on / off.
[0022]
When this infrared ray is input to the detection element of the optical integrated circuit ICp, the resistor R constituting the circuit connecting portion 34 provided at the other output terminal.₅, R₆Is short-circuited, so transistor Q₂Transistor base input is lost, transistor Q₂Is not conducted, and power supply to each circuit such as the water amount adjusting unit is cut off.
[0023]
As shown in FIG. 3, when the cup K is placed on the tray T, the cup cuts off the optical path of the infrared light, so that no infrared light enters the optical integrated circuit ICp in FIG. The resistance R of the circuit connection 34 provided at the other output terminal₅, R₆Release the short circuit.
As a result, the resistance R₅, R₆The divided voltage of the transistor Q₂Therefore, the water supply to the water amount adjusting unit 35 in FIG. 4 and the power supply to the circuit in FIG. 5 are performed, and water supply to the cup K is started.
[0024]
Usually, the photocoupler is used with light shielding to avoid the influence of extraneous light, but in the case of the present invention, since it is used as an automatic water supply device in a dental treatment device, means such as light shielding cannot be adopted. .
Therefore, as shown in FIG. 3, the infrared light emitting diode LED is attached to the base of the water supply tube 1 obliquely upward, and the infrared light is also emitted obliquely upward. No. 4 optical integrated circuit ICp is mounted obliquely downward, and is configured to receive emitted infrared light.
[0025]
In the real world, there is very little opportunity for extraneous light to enter from obliquely below, so the configuration described above makes it possible to detect a cup without using a special shade that eliminates the influence of extraneous light. .
[0026]
Integrated circuit IC of FIG.₁, Variable resistance VR₁, Resistance R₇The water amount adjustment unit 35 is configured by the variable resistance VR₁Is installed in an easy-to-operate part of the water supply section of the cup, and the integrated circuit IC₁The doctor can adjust the amount of water supplied to the cup K by changing the output voltage of the cup.
[0027]
Resistance R in FIG.₈~ R₁₀And signals detected from the lead wires (1) to (6), capacitor C₃, Diode D₁And the water amount detection part 36 is comprised by comparator COMP, and the detection of the water supply amount supplied to the cup K is performed. The conducting wires (1) to (6) are the electrodes T in FIG.₁~ T₆Each of the electrodes is supplied with power by the circuit connecting portion 34, and the electrical resistance value corresponding to the length of the water flow in each section shown in FIG. 1 and the water quality (liquid quality) at each connection position in FIG. (R_A~ R_D) Is generated.
[0028]
In the equivalent circuit of the water amount adjusting unit 35 and the water amount detecting unit 36 including electrodes shown in FIG._AIs the electrode T in FIG.₂And electrode T₃Resistance R_BIs the electrode T in FIG.₃Electrode T₄Resistance R_CIs the electrode T in FIG.₁And electrode T₂Each electric resistance value between is expressed.
These three resistors R_A, R_B, R_CAre connected in a π-type as shown in FIG._A・ R_CA variable voltage for adjusting the liquid volume is applied to the connection point of R, and the resistance R_A, R_BIs connected to one input of the comparator COMP as a reference voltage.
[0029]
R_ZIs the electrode T₅And electrode T₆Represents the electrical resistance value of the conductive circuit of the water column formed through the gargle water supplied into the cup K, and when the water is not accumulated in the cup K, the resistance value is infinite. As it approaches full water, the resistance value decreases rapidly.
This resistance R_ZThe current through the capacitor C₃Electrode T provided in parallel₆And T₄Resistance R between_DFlowing through. Therefore, resistance R_ZThe voltage generated corresponding to the resistance value of (water column resistance) is resistance R_DIt is possible to compensate for fluctuations caused by water quality.
[0030]
Resistance R_A, R_BThe reference voltage generated at the connection point is the electric resistance value R of the liquid column measured through the cup K even if the electric resistance value of the liquid changes due to the difference in water quality (liquid quality)._ZAnd the comparator COMP are compared with each other.₁The specified amount of water set up by is always supplied during the cup K.
[0031]
Integrated circuit IC₂And resistance R₁₁~ R₁₄, Capacitor C₁, C₂, Transistor Q₃The water amount control unit 37 is configured by a circuit of the relay RL and the photodiode PD. The water amount control unit 37 receives an appropriate water amount signal (indicated by b) from the water supply comparator COMP, generates an electromagnetic valve open / close control signal, controls water supply to the cup K, and the photodiode PD A signal indicating that the water is being supplied is transmitted to the cleaning control circuit (FIG. 5).
[0032]
The water amount control unit 37 measures the timing of the integrated circuit IC when an abnormality occurs in the water supply unit.₂A safety function is provided to prevent the water supply part from becoming flooded.
[0033]
Resistance R in FIG.₁₀Is an integrated circuit IC₂One of the circuits for generating an input signal for starting and stopping the circuit, and at the time of starting, the high potential is applied to the integrated circuit IC together with the output of the comparator COMP.₂Integrated circuit IC receiving the signal₂Starts the operation. When the comparator COMP detects that it has reached the appropriate set amount of liquid, its output is inverted and the integrated circuit IC₂Since a low potential is input to the integrated circuit IC₂Receives this signal and stops its operation.
[0034]
Resistance R₁₃, R₁₄And capacitor C₁, C₂Each of these circuits is a time constant circuit and has a resistance R₁₃And capacitor C₁Transistor Q₂Immediately after the start of water supply, the zero potential is applied to the integrated circuit IC.₂After that, when the supply potential rises with time and reaches 2/3 of the rated voltage, the integrated circuit IC₂It fulfills the safety function of stopping the drive of the. As this time constant, it is necessary to select a time constant slightly longer than the water supply completion time to the cup K.
[0035]
Integrated circuit IC once stopped₂Then transistor Q₂, In other words, the cup K is taken up and gargled, and the capacitor C₁, C₂If IC is not discharged, integrated circuit IC₂Does not drive again. Resistance R₁₄And capacitor C₂Is a trigger gate circuit, integrated circuit IC₂Drive start signal.
[0036]
Integrated circuit IC₂Is driven, the resistance R₁₁, R₁₂An output is generated above, and the divided voltage is the transistor Q₃Since it is input to the base of the transistor, it becomes conductive and the transistor Q₃And the relay RL connected in series is driven. At the same time, the photodiode PD and the capacitor C₄A voltage is applied to the parallel circuit.
[0037]
When the relay RL is driven, its make contact rl₁Is closed, so the solenoid valve SV₁Operates and water is supplied to Cup K. On the other hand, the diode PD is a capacitor C connected in parallel with the diode PD.₄Therefore, the photodiode PD is short-circuited and does not emit light immediately.
[0038]
Resistance R₁₅Through capacitor C₄As the battery voltage is charged, the terminal voltage increases, so that the photodiode PD starts to emit light with a delay. This light enters the phototransistor PT of the spitton cleaning control circuit shown in FIG.₃Is supplied with a low potential to suppress its drive.
[0039]
In the control circuit for the spit-on cleaning of FIG. 5, the second transfer contact rl of the cup water supply relay RL.₂Is connected to the make side and resistance R₂₁Capacitor C through₁₀Has started to charge the integrated circuit IC₃Since no start signal is input to the integrated circuit IC₃Is in a standby state without driving.
[0040]
When water supply to Cup K is complete, transistor Q₃Becomes non-conductive and the relay RL is restored, so the solenoid valve SV₁Stops and water supply is stopped. Also, the driving signal of the photodiode PD is stopped, but the capacitor C₄As a result of this discharge, light is emitted until after a certain time, after which light emission is stopped, and light incident on the phototransistor PT is stopped.
[0041]
Integrated circuit IC₃Is the resistance R due to the incident light of the phototransistor PT.₂₇The drive signal due to is suppressed, the drive is started when the signal disappears, and the relay RL is also restored and the contact rl₂Also returns to the break side and capacitor C₁₀The charge accumulated in the resistor R₂₂, R₂₃To start discharging.
[0042]
This discharge voltage is the resistance R₂₂, R₂₃Through transistor Q₄Transistor Q, so transistor Q₄Is conductive and integrated circuit IC₃Is supplied as a trigger gate signal to the integrated circuit IC₃Starts driving.
Integrated circuit IC₃Is driven, its output is the resistance R₂₅, R₂₆Appearing in transistor Q₅, The relay RY connected in series is driven, the make contact ry is closed, and the solenoid valve SV₂Is driven by receiving AC power from terminals 13 ″ and 14 ″, and the cleaning water is discharged into the spittoon 2 from the spit wash pipe 5 (see FIGS. 7 and 8).
[0043]
Capacitor C₁₀And resistance R₂₂, R₂₃The time constant circuit consisting of₄Non-conductive, integrated circuit IC₃Therefore, the relay RY is restored and the outflow of the Spitton wash water is stopped.
Therefore, the amount of water for cleaning in the spittoon is the capacitor C₁₀, Resistance R₂₂, R₂₃By appropriately selecting the circuit constants, the amount of water can be determined by adjusting the outflow time.
[0044]
Even if the patient picks up the cup K and starts gargle during spitton washing, the spitton washing is continued for a certain period of time. Then, the cup detection unit 33 detects this and starts supplying water into the cup K.₃Operates and the light from the photodiode PD is input to the phototransistor PT, and the integrated circuit IC₃Stop driving.
[0045]
One of the start signals, the trigger gate signal, is a contact rl due to the operation of the relay RL.₂Contacts the make side and the capacitor C₁₀Since charging starts, the trigger gate signal is cut off and the integrated circuit IC₃Is stopped, the relay RY is restored, the cleaning in the spitons is temporarily interrupted, and the cup water supply is given priority.
[0046]
The operation of the present embodiment will be described with reference to the other drawings based on the circuits of FIGS.
In the dental treatment device, when the patient picks up the cup K and gargles, since the cup K is not on the tray T, there is no cup K between the infrared light emitting diode LED and the optical integrated circuit ICp to prevent light reception. Since the intermittent infrared light is received by the optical integrated circuit ICp, the resistance R of the output portion thereof₅And R₆And short-circuit the transistor Q₂Since it becomes non-conductive, power is not supplied to the subsequent circuits and water is not supplied.
[0047]
When the cup K is placed on the tray T, the input of the optical integrated circuit ICp is lost, and the resistance R of the output part is lost.₅, R₆Since a voltage is generated at the transistor Q, the transistor Q₂Becomes conductive and power feeding starts.
[0048]
Variable resistance VR for adjusting the amount of water in the cup₁The voltage supplied via the resistor is the resistance R between the electrodes described above._A, R_B, R_CA reference voltage is generated when it is input to the circuit constituted by the above and is supplied to one input of the comparator COMP. The other input has a variable resistance R of the water column measured through the cup K_ZResistance value (resistance R_DRelative value with respect to the resistance value) is supplied, but initially there is no gargle water in the cup K, so the measured electrical resistance value is infinite, so the comparator COMP outputs a high potential. Integrated circuit IC₂Integrated circuit IC₂Is resistance R₁₁, R₁₂Produces output.
[0049]
This divided voltage is the transistor Q₃Transistor Q₃Is electrically connected to drive the relay RL and the photodiode PD connected in series with the make contact rl.₁Is closed, so the solenoid valve SV₁Works and starts watering the cup.
The variable resistance R of the measured water column as gargle water is supplied into the cup K_ZDecreases rapidly, the input to the comparator COMP rises and becomes the same as the input voltage of the reference voltage, the output of the comparator COMP is inverted and outputs a low potential, so that the integrated circuit IC₂Stops driving.
[0050]
Integrated circuit IC₂When transistor stops, transistor Q₃Also becomes non-conductive and the relay RL is restored, so the make contact rl₁Is open and solenoid valve SV₁Stop water supply and stop water supply. In this state, in order for the patient to perform the next gargle, the cup K that has become full of water is waiting.
[0051]
Transistor Q above₃Is turned on, the photodiode PD emits light after a certain time, enters the phototransistor PT, and the integrated circuit IC.₃This suppresses the driving of the engine and waits for spit-on cleaning.
On the other hand, the relay RL operates and the second contact rl₂Is switched and resistance R₂₁Capacitor C through₁₀Charging has started, but integrated circuit IC₃Trigger gate circuit (transistor Q₄Of the emitter side of the integrated circuit IC₃Is not driven.
[0052]
Water supply to cup K is completed, integrated circuit IC₂When the driving of transistor Q stops, transistor Q₃Becomes non-conductive, the water supply is stopped, and the light emission of the photodiode PD is stopped.₃Release the suppression of driving. Since the relay RL is restored at the same time, the contact rl₂Is restored, capacitor C₁₀The electric charge accumulated in the resistor R₂₂, R₂₃To start discharging.
[0053]
This voltage is the transistor Q₄Integrated circuit IC₃Is input as a trigger gate signal to the integrated circuit IC₃Drive.
Integrated circuit IC₃Is driven, its output is the resistance R₂₅, R₂₆Appears in transistor Q₅And the relay RY connected in series is operated. As a result, the make contact ry is closed and the solenoid valve SV is closed.₂, And wash the water by letting the wash water that has passed through the spit-on wash pipe into the spit.
[0054]
After the relay RY is activated, the capacitor C₁₀When the discharge of the charge accumulated in the capacitor decreases after a certain time, the integrated circuit IC₃Stops its operation because the trigger gate signal drops, and transistor Q₅Is turned off and the relay RY is restored, and the solenoid valve SV₂Stop the washing water.
[0055]
As described above, the water supply system that compensates for the deviation of the electrical resistance value of the water due to the difference in water quality by using the all-electronic control circuit by using the Spitton cleaning apparatus shown in FIGS. We have realized a spitton cleaning device that performs automatic water supply to a functional cup and spitton cleaning that operates in time series with the water supply function.
[0056]
In the present embodiment, the water amount detection and control for automatic water supply to the cup is shown for the case where the technology for detecting the electrical resistance value of water (liquid) is adopted, but by other conventionally known methods. It goes without saying that the spitton cleaning technique of the present invention can also be applied to an automatic water supply apparatus that detects and controls the amount of water. In that case, when the water supply operation to the cup is being performed, the driving of the spittoon cleaning is waited, and when the water supply operation is completed, the water supply for cleaning the spittoon is performed for a certain period of time.
[0057]
【The invention's effect】
  As described above in detail as an embodiment, the spitone cleaning apparatus according to the present invention has the following various advantages.
  Since the doctor does not need to repeat the washing operation each time and the washing is automatically performed after the water supply to the cup is completed, it is extremely hygienic and the cup water supply and spitton washing are performed in time series. The water supply source can be made smaller.
  Since there are no mechanical parts in the water supply part, the water supply part can be reduced in size and weight, and maintenance is easy.
  Then, when cleaning the inside of the Spitton, if the cup after gargle is placed on the cup placement section, the cup water supply control section is activated, and the Spitton cleaning control section immediately stops driving by that signal and stops the cleaning. Then, since water supply to the cup is prioritized and executed, a cup that is always supplied with water is prepared.
[0058]
Furthermore, since the spitton cleaning device of the present invention is an all-electronic circuit, assembly wiring can be performed using an automated device such as a part inserter in the production thereof, so that the cost can be reduced, and in addition, if assembled into a package type, When an accident occurs, it can be dealt with promptly by replacement.
[Brief description of the drawings]
FIG. 1 is a principle configuration diagram of the present invention.
FIG. 2 is an explanatory diagram of a water supply unit of a dental treatment apparatus in which the present invention is implemented.
FIG. 3 is a side view of a water supply tube of a dental treatment apparatus in which the present invention is implemented.
FIG. 4 is a control circuit diagram (part 1) according to the embodiment of the present invention.
FIG. 5 is a control circuit diagram (No. 2) according to the embodiment of this invention.
FIG. 6 is an equivalent circuit diagram showing an electrical connection relationship between a water amount adjusting unit and a water amount detecting unit.
FIG. 7 is a side view of a conventional dental treatment apparatus.
FIG. 8 is a top view of a conventional dental treatment apparatus.
[Explanation of symbols]
1: Water bottle
2: Spitton
3: Water supply pipe
4: Cook
5: Spitton wash pipe
6: Medical chair
10: Cup placement detector
11: Cup water supply control unit
12: Cup water supply drive
13: Spitton cleaning control unit
14: Cleaning water supply drive unit
K: Cup
SV₁~ SV₂: solenoid valve
T₁  ~ T₆: Electrode
R_A  ~ R_C: Equivalent resistance between electrodes
R_Z  : Equivalent resistance of water column
▲ 1 ▼ ～ ▲ 6 ▼: Conductor

Claims (2)

In the spitton cleaning device in the dental treatment device equipped with an automatic water supply mechanism to the cup,
A cup placement detection unit that detects cup placement by a sensor, a cup water supply control unit that starts water supply based on the detection output of the cup placement detection unit, and performs water supply control for a certain amount, and water supply control for spitton cleaning Spitton cleaning control unit,
The spittoon wash control section, the have line control flowing only washing water fixed time to start the water supply of the water by the cup feed water control unit detects the completion of spittoon washing and gargling is terminated during spittoon washing When the cup is placed and the cup water supply is started, the water supply for the spitton cleaning is interrupted by a signal during the cup water supply, and the control to give priority to the cup water supply is performed . In the spitton cleaning device in the dental treatment device equipped with an automatic water supply mechanism to the cup,
A first electrode for detecting the electrical resistance of water at each interval and a water solution dropped to the water supply port and supplied to the cup are arranged at predetermined intervals between the water supply pipe and the water supply port. A second electrode for detecting the electrical resistance of the water column,
Corresponding to a cup placement detection unit for detecting cup placement by a sensor, a reference voltage corresponding to water quality that generates a plurality of electrical resistance values detected by the first electrode, and an electrical resistance value detected by the second electrode A cup water amount detection control unit that detects the amount of water using a voltage to be applied, and a spitton cleaning control unit that performs water supply control for spitton cleaning,
The spittoon wash control section, the have line control flowing only washing water fixed time to start the water supply of the water by the cup feed water control unit detects the completion of spittoon washing and gargling is terminated during spittoon washing When the cup is placed and the cup water supply is started, the water supply for the spitton cleaning is interrupted by a signal during the cup water supply, and the control to give priority to the cup water supply is performed .

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