Toilet seat device, toilet device, and descaling agent supply device

Abstract

The toilet seat device includes a function unit arranged in a rear part of the toilet; a toilet seat rotatably attached to the function unit; and a private parts cleaning mechanism part provided in the function unit and having a private parts cleaning function. The private parts cleaning mechanism part has a cleaning water flow passage through which cleaning water flows, the cleaning water flow passage is formed with an air gap that opens the cleaning water flow passage to atmosphere, and the air gap is connectable to a tube member for injecting a descaling agent for removing scale accumulated in the cleaning water flow passage.

1 . A toilet seat device attached to a toilet, the toilet seat device comprising:
 a function unit arranged in a rear part of the toilet;   a toilet seat rotatably attached to the function unit; and   a private parts cleaning mechanism unit provided in the function unit and having a private parts cleaning function,   wherein the private parts cleaning mechanism unit has a cleaning water flow passage through which cleaning water flows, the cleaning water flow passage being formed with an air gap that opens the cleaning water flow passage to atmosphere, and   wherein the air gap is connectable to a tube member for injecting a descaling agent for removing scale accumulated in the cleaning water flow passage.   
     
     
         2 . The toilet seat device of  claim 1 , wherein an inflow position at which the descaling agent flows into the cleaning water flow passage through the air gap is in a downstream side of the cleaning water flow passage further than a water supply position at which the cleaning water is supplied to the cleaning water flow passage. 
     
     
         3 . The toilet seat device of  claim 1 , wherein an inflow position at which the descaling agent flows into the cleaning water flow passage through the air gap is a lower position than a water supply position at which the cleaning water is supplied to the cleaning water flow passage. 
     
     
         4 . The toilet seat device of  claim 1 , wherein an inflow position at which the descaling agent flows into the cleaning water flow passage through the air gap is in an upstream side of the cleaning water flow passage further than an assist pump for causing the cleaning water to flow through the cleaning water flow passage. 
     
     
         5 . The toilet seat device of  claim 1 , wherein a downstream end portion of a supply tube of the descaling agent for causing the descaling agent to flow through the air gap is configured to be the thinnest in the supply tube. 
     
     
         6 . (canceled) 
     
     
         7 . A toilet seat device attached to a toilet, the toilet device comprising:
 a function unit arranged in a rear part of the toilet;   a toilet seat rotatably attached to the function unit; and   a private parts cleaning mechanism unit provided in the function unit and having a private parts cleaning function,   wherein a side surface of the function unit has a connection port that is connectable to an injection member for injecting a descaling agent for removing scale accumulated in a cleaning water flow passage through which cleaning water flows in the private parts cleaning mechanism unit.   
     
     
         8 . The toilet seat device of  claim 7 , wherein the injection member is a tube member. 
     
     
         9 . The toilet seat device of  claim 8 , wherein an end portion of the tube member mounted with an O-ring is pressed in and connected to the connection port. 
     
     
         10 . (canceled) 
     
     
         11 . A descaling agent supply device provided in a toilet device attached to a toilet, the toilet seat device comprising: a function unit arranged in a rear part of the toilet; a toilet seat rotatably attached to the function unit; and a private parts cleaning mechanism unit provided in the function unit and having a private parts cleaning function,
 the descaling agent supply device comprising a container storing a descaling agent for removing scale accumulated in a cleaning water flow passage through which cleaning water flows in the private parts cleaning mechanism unit, and   a container holding unit supported by a predetermined portion of the toilet seat device or a related device of the toilet seat device to hold the container.   
     
     
         12 . The descaling agent supply device of  claim 11 , further comprising a tube member communicating the container with the cleaning water flow passage and through which the descaling agent flows,
 wherein the tube member is provided with a valve that switches between flowing through and blocking of the descaling agent in the tube member.   
     
     
         13 . The descaling agent supply device of  claim 11 , wherein the container holding unit is supported by any of a toilet lid, a toilet seat, and a remote control device for operation of the private parts cleaning mechanism unit. 
     
     
         14 . The descaling agent supply device of  claim 13 , further comprising a control unit that controls driving of the toilet lid,
 wherein, when the descaling agent is supplied from the container to the cleaning water flow passage, the control unit controls the toilet lid to maintain a state where the toilet lid is opened.   
     
     
         15 . (canceled) 
     
     
         16 . A descaling agent supply device provided in a toilet seat device attached to a toilet, the toilet seat device comprising: a function unit arranged in a rear part of the toilet; a toilet seat rotatably attached to the function unit; and a private parts cleaning mechanism unit having a private parts cleaning function,
 the descaling agent supply device comprising a pump for causing cleaning water to flow through a cleaning water flow passage in the private parts cleaning mechanism unit,   a flow rate sensor capable of detecting a flow rate of the cleaning water flowing through the cleaning water flow passage,   a descaling agent supply unit that supplies a descaling agent for removing scale accumulated in the cleaning water flow passage to the cleaning water flow passage, and   a control unit that performs control to drive the pump,   wherein the control unit drives the pump to supply the descaling agent from the descaling agent supply unit to the cleaning water flow passage, and performs control of determining whether the descaling agent is flowing through the cleaning water flow passage on the basis of the flow rate in the cleaning water flow passage that has been detected by the flow rate sensor.   
     
     
         17 . The descaling agent supply device of  claim 16 , wherein the control unit performs control of determining whether the descaling agent has been filled in the cleaning water flow passage and whether the descaling agent is discharged from the cleaning water flow passage on the basis of the flow rate in the cleaning water flow passage that has been detected by the flow rate sensor. 
     
     
         18 . The descaling agent supply device of  claim 16 , wherein, in the determination whether the descaling agent is flowing through the cleaning water flow passage by the control unit, when it is determined that the descaling agent is not flowing through the cleaning water flow passage, transition is made to control of causing the cleaning water to flow through the cleaning water flow passage, and discharging the descaling agent. 
     
     
         19 . The descaling agent supply device of  claim 16 , further comprising:
 a feed valve that switches between supply and supply stop of the cleaning water to the cleaning water flow passage,   wherein the control unit performs control to drive the pump and the feed valve on the basis of the flow rate of the cleaning water that has been detected by the flow rate sensor, and   performs, with respect to the feed valve, the pump, and the flow rate sensor, control of switching the feed valve to a state where the cleaning water can be supplied to the cleaning water flow passage, and at the same time, driving the pump to start supply of the cleaning water to the cleaning water flow passage and start detecting the flow rate of the cleaning water in the cleaning water flow passage by the flow rate sensor, and   performs, with respect to the feed valve and the flow rate sensor, flow rate determination control of switching the feed valve to cause the cleaning water not to be supplied to the cleaning water flow passage after a predetermined time, and at the same time, determining that an immediately preceding flow rate in the cleaning water flow passage is equal to or greater than a predetermined value by the flow rate sensor.   
     
     
         20 . The descaling agent supply device of  claim 19 , wherein the flow rate determination control by the control unit is repeated a plurality of times. 
     
     
         21 . The descaling agent supply device of  claim 19 , wherein, in the flow rate determination control by the control unit, when it is determined that an immediately preceding flow rate in the cleaning water flow passage is not equal to or greater than the predetermined value, a display appears on the remote control device to urge operation of performing control again from control of starting supply of the cleaning water to the cleaning water flow passage. 
     
     
         22 . The descaling agent supply device of  claim 19 , wherein it can be determined in the remote control device that descaling has been performed correctly only when the entire process has been performed, the entire process including starting the flow of the descaling agent through the cleaning water flow passage, retaining the descaling agent for a certain time, supplying the cleaning water to the cleaning water flow passage, and repeating the flow rate determination control a plurality of times after the predetermined time, by the control unit.