JP2009127408A - Method and system for opening/closing drain valve by remote control - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a system for opening/closing a drain valve by remote control, which simplify and facilitate construction, and which enable retrofitting work. <P>SOLUTION: In the system for opening/closing the drain valve by remote control, the drain valve A is equipped with an opening/closing signal reception portion 1, an opening/closing sensor 2, an opening/closing operation portion 3, and an opening/closing state signal transmission portion 4: and an operation section B is equipped with an opening/closing button 5, an opening/closing operation display portion 6, an opening/closing signal transmission portion 7, an opening/closing state signal reception portion 8, and an opening/closing state display switching portion 9. In the method for opening/closing the drain valve by remote control, the drain valve A is opened/closed by performing a radio operation by the opening/closing button 5; an opening/closing signal, which is displayed on the opening/closing operation display portion 6 and transmitted from the transmission portion 7, is received by the opening/closing state signal transmission portion 4; the opening/closing sensor 2 detects the opening/closing state on the basis of the opening/closing signal; the opening/closing operation portion 3 makes the motor 301 stop, normally run and reversely run by an ON-OFF operation, so that the drain valve A can be opened/closed in an ascending/descending manner; the opening/closing state is wirelessly transmitted to the operation section B; and the opening/closing operation display portion 6 is switched to the display of the opening/closing state of the drain valve A on the basis of the signal. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for remotely opening and closing a drain plug that opens and closes a drain of a water tank such as a wash basin and a bathtub, and an opening and closing device thereof.

A conventional method for remotely opening and closing a drain plug, and its opening and closing device, wherein an operation is transmitted via a release wire from an operation unit spaced apart from the drain port to a drive unit positioned at the drain port. The drain outlet is opened and closed by raising and lowering.
However, the remote operation opening / closing method of the drain plug and the opening / closing device of the drain plug allow the release wire to pass through the drain pipe, and there is a problem in structural sealing performance, installation work, and maintenance.

In view of this, there has been proposed a remote operation opening / closing method of a drain plug and its opening / closing device that can raise and lower the drain plug without passing a release wire through the drain pipe.
This remote control opening and closing method of the drain plug and its switching device are operated by a solenoid arranged in the drain pipe to raise and lower the drain plug that opens and closes the drain port, and the solenoid sucks the plunger by electromagnetic force. The drainage stopper, which is actuated and returned, and the shaft rod is connected to the plunger, is raised and lowered to open and close the drainage port (Patent Document 1).

The opening / closing method and the opening / closing device in which the solenoid is disposed in the drain pipe require electrical wiring work into the drain pipe, and this wiring work has been difficult. Accordingly, it is an object of the present invention to provide a method for remotely opening and closing a drain plug that eliminates the need for electrical wiring work in the drain pipe, and an opening and closing device therefor.
This drain plug remote operation opening and closing device and its switching device are provided with a magnetic body in a drain plug that opens and closes a drain outlet, and an electromagnet is disposed outside the drain pipe, and the electromagnet is turned on and off by an operation switch. By being controlled, there was one that lifts and lowers the drain plug by the adsorption of the magnetic material (Patent Document 2).

  Also, a follower magnet that opens and closes the drain outlet is fixed, and a drive magnet is disposed outside the drain pipe, and the drive magnet is operated along the outer peripheral surface of the drain pipe. There is a remote operation opening / closing method of a drain plug that opens and closes the drain plug by moving the follower magnet up and down to open and close the drain port, and its switching device (Patent Document 3).

  Japanese Utility Model 1-174475   5-10564   JP2001-20340

  By the way, the remote control opening and closing method of the drain plug in which the solenoid is disposed in the drain pipe and the switchgear (Patent Document 1) have to wire the electric wire to the solenoid in the drain pipe. The structure is complicated in particular in terms of insulation and sealing, and difficult electrical work is required, making the structure and its construction difficult.

  In addition, a magnetic body is provided in the drain plug that opens and closes the drain outlet, and an electromagnet is disposed outside the drain pipe, and the electromagnet is controlled to be turned on and off by an operation switch. Although the drain plug is moved up and down, the method for remotely opening and closing the drain plug and its switchgear (Patent Document 2) is not an electric wiring work up to the inside of the drain pipe, but the electric wiring to the electromagnet outside the drain pipe Construction has to be performed, and construction in consideration of insulation and sealing points by the electric wiring is necessary, making the structure and construction work difficult.

  In addition, it is assumed that no electric wire is wired in the drain pipe, and a follower magnet is fixed to the drain pipe, and a drain plug with a driving magnet that moves up and down along the outer peripheral surface of the drain pipe is provided. There is an operation opening and closing method and its opening and closing device (Patent Document 3). However, this remote operation opening and closing method and its opening and closing device do not require wiring work to the inside of the drain pipe, but from the remote operation part to the drive magnet The construction of the transmission member such as the release wire has to be done, which makes the construction difficult and the structure complicated.

  In addition, a remote operation opening / closing method of a drain plug in which an electromagnet disposed on the outside of the drain pipe moves up and down by ON / OFF control, a switching apparatus thereof, and an outer peripheral surface of the drain pipe. Both of the remote operation opening and closing method of the drain plug in which the driven magnet in the drain pipe is made to follow by the drive magnet that moves up and down and the drain plug connected thereto is raised and lowered, The inside of the drain and the drain pipe are magnetized, making it easy for scale to adhere, slowing the movement of the drain plug, and hindering the opening and closing of the drain.

  Therefore, the present invention eliminates the need for the arrangement and electrical wiring of the release wire, and its construction at all, and simplifies the structure that has been complicated in terms of insulation, sealing properties, etc., and simplifies the construction. It is an object of the present invention to provide a remote operation opening / closing method and an opening / closing device for a drain plug that can be easily and retrofitted.

  The drain plug remote control opening / closing method of the present invention includes an opening / closing signal receiving unit, an opening / closing sensor, an opening / closing operation unit by forward and reverse rotation of the motor, and an opening / closing state signal transmitting unit. The operation unit disposed at a position separated from the drain port includes an open / close button, an open / close operation display unit, an open / close signal transmission unit, an open / close state signal reception unit, and an open / close state display switching unit. Opening and closing the drain plug by wireless remote operation with a button, opening and closing operation is displayed on the opening and closing operation display unit by operating the opening and closing button in the operation unit, and the wireless opening and closing signal is drained from the transmission unit The open / close signal is sent to the plug and received by the open / close signal receiving unit provided in the drain plug at a remote location. Based on this open / close signal, the open / close sensor detects the open / close state, and the open / close operation is performed by ON / OFF. Part Stops, forwards and reverses the motor to open and close the drain valve, and the open / close state of this operation is wirelessly transmitted to the operation unit. Based on this signal, the open / close operation indicator is opened / closed of the drain plug Switching to display.

  In the remote control opening / closing method of the drain plug according to the present invention, an opening button and a closing button are provided in the operation unit. When the opening button is operated, the opening operation is displayed together with the opening operation, and the opening signal is wirelessly transmitted from the transmission unit. When the close button is operated, the close operation is displayed together with this operation, and the close signal is transmitted wirelessly from the transmitter to the drive unit inside the drain plug. When the opening / closing signal is received by the receiving unit of the driving unit in the drain plug and the opening operation is received, if the opening sensor (position sensor) of the drain plug deployment is ON, the motor is stopped and OFF Then, the motor is rotated forward to open the drain plug, and when the closing operation is received, the motor is stopped if the closing sensor (position sensor) of the drain plug deployment is ON, and if it is OFF, the motor is stopped. Invert the drain plug and close this drain Closed state by receiving the reception unit of the operation unit in transmission by radio, in which switching to the opening and closing state display opening and closing the display unit from the opening and closing operation display.

  The drain valve remote control opening and closing method of the present invention is to perform digital signal processing of radio.

  The remote control opening / closing device for a drain plug according to the present invention includes a drain plug opening / closing button, an opening / closing operation display unit for the opening / closing button, and an opening / closing operation for the drain plug. An open / close signal transmission unit that wirelessly transmits to an internal drive unit, and a switching unit that wirelessly receives an open / close state of a drain plug and switches from an open / close operation display to an open / close state display. , An open / close signal receiving unit that receives an open / close signal from the electric wire and the operation unit, an open / close sensor (position sensor) that detects the open / close position of the drain plug in response to the open / close signal, and ON / OFF detection of the open / close sensor, If it is ON, it will stop, if the open sensor is OFF, it will rotate forward, and if the close sensor is OFF, the motor will reverse, and the open / closed state signal due to the stop of the motor will be wirelessly transmitted to the drain plug open / closed state signal receiving unit of the operation unit Open / close status signal Those comprising a signal portion.

  The drain plug remote control opening and closing device of the present invention comprises a main body case in which the drain plug is composed of a plug lid portion and a shaft rod portion, and a plug cover fitted on the main body case, and the shaft rod portion of the drain plug. Is supported and fixed to the drainage metal fitting of the drainage port, and a support member for raising and lowering the plug lid portion is provided.

  The drain plug remote control opening and closing device of the present invention is provided with an opening / closing sensor on the shaft rod portion, detecting the opening / closing state of the drain plug, and equipped with a rotation transmission shaft for raising and lowering the drain plug by rotation of the motor, A stopper opening / closing sliding shaft is provided on the outer side thereof, fixed to a support member, and sliding the drain plug in the axial direction to open and close the drain outlet.

  In addition, the stopper opening / closing sliding shaft fixed to the support member that opens and closes the drain outlet by sliding the drain plug in the axial direction rotates the spring of the shock absorber that absorbs the impact in the axial direction with the stopper opening / closing sliding shaft. It is provided between the transmission shaft.

  The drain plug remote control opening / closing method of the present invention can be miniaturized and a high performance power source, motor, receiver, etc. can be obtained, so that it can be stored in a narrow body case of the drain plug, and Since it was made with excellent sealing properties, it became possible to remotely control the drain plug from the control unit wirelessly. Therefore, the construction, handling and operation are simple and easy.

  According to the remote control opening / closing method of the drain plug of the present invention, the opening / closing operation is displayed on the opening / closing operation display unit by the operation of the opening / closing button of the operation unit, and the opening / closing state display is transmitted from the drain plug to the operation unit wirelessly and switched. Therefore, the opening / closing operation and the opening / closing state of the drain plug can be known only by the operation unit, and the drain plug can be opened / closed remotely by a simple and simple operation.

  According to the drain plug remote control opening / closing method of the present invention, the operation of the open / close button in the operation unit is wirelessly transmitted to the drain plug, the open / close sensor detects opening / closing of the drain plug, and the open / close operation unit is turned on / off by the open / close sensor The motor is stopped, forwardly rotated, and reversed, and the open / closed state by this operation is transmitted wirelessly to the operation unit. Based on this signal, the display of the operation unit can be switched to the open / close state of the drain valve, so the scale is small. Therefore, the operation is simple, easy and reliable.

  The drain plug remote control opening / closing method of the present invention is provided with an open button and a close button in the operation unit, and the opening / closing operation by each operation can be transmitted wirelessly to the drain plug, so that the operation mode and operation are simple. It can be made surely and reliably.

  The drain plug remote operation opening / closing method of the present invention can improve performance, reduce the size of the device, and reduce power consumption by wireless transmission using digital signal processing.

  Further, the drain plug remote control opening and closing device of the present invention wirelessly transmits the remote control from the operation unit to the drain plug, so that it does not require a release wire or electric wire for remote control that has been required conventionally, Moreover, since there is no structure for the arrangement and wiring, the entire structure is simplified, and the construction work can be performed easily and easily.

  According to the drain plug remote control opening / closing device of the present invention, the operation of the opening / closing button of the operation unit wirelessly transmits the opening / closing operation to the drain plug driving unit, and the opening / closing sensor (position sensor) is turned on based on the opening / closing operation signal.・ Detected by OFF, stops if detection is ON, forwards if open sensor is OFF, reverses if close sensor is OFF, and opens / closes the drain plug, simplifying the opening / closing structure Therefore, since it can be reduced in size, it can be stored in the main body case with a narrow drain plug, and can be embedded and sealed in a drain plug composed of a plug cover to be fitted. The function of opening and closing the stopper can be improved.

  And since the drain plug is equipped with the shock absorber which absorbs the impact of an axial direction, even if there is a stepping-on impact to a drain plug, there is no problem and it does not cause trouble.

  In addition, since the drain plug remote control opening / closing device of the present invention is a drain plug that is processed wirelessly, there is no accessory such as a release wire or an electric wire, and the drain plug can be simply attached to the drain fitting of the drain outlet. It can be done without any discretion and retrofitting.

BEST MODE FOR CARRYING OUT THE INVENTION

  The drain plug remote operation opening and closing method and the switch of the present invention are opened and closed by raising and lowering the drain plug by remote control of the drain port of the basin, bathtub, etc. from the operation unit separated from the drain port. The remote operation is performed wirelessly.

As described above with reference to the drawings, as shown in FIG. 1, the drain plug A that opens and closes the drain outlet includes an opening / closing signal receiving unit 1, an opening / closing sensor 2, an opening / closing operation unit 3 by forward, reverse, and stop of the motor, An open / close state signal transmission unit 4 is provided, the operation unit B has an open / close button 5, an open / close operation display unit 6 for displaying an open / close operation by operating the open / close button, and an open / close operation to the drain plug A by a wireless open / close signal. An opening / closing signal transmitting unit 7 for transmitting, an opening / closing state signal receiving unit 8 for wirelessly receiving the opening / closing state of the drain plug, and an opening / closing state display switching unit 9 for switching the display of the opening / closing operation display unit 6 based on the opening / closing state are provided. The drain plug A is opened and closed by remote operation of wireless transmission of the operation of the open / close button 5 of the operation unit B.
The drain plug remote operation opening / closing method is such that the opening / closing operation is displayed on the opening / closing operation display unit 6 of the operation unit B by the operation of the opening / closing button 5 in the operation unit B, and the open / close signal is remotely transmitted from the opening / closing signal transmission unit 7 Is received by the open / close signal receiver 1 in the drain plug A, and the open / close sensor (position sensor) 2 detects the open / close state. The motor of the unit 3 is normally rotated, reversed, and stopped, and the open / close state by this operation is wirelessly transmitted by the open / close state signal transmitting unit 4 to the open / close state signal receiving unit 8 of the operation unit B, and based on this open / close state signal The open / close state display switching unit 9 switches the display of the drain plug to the open / close state display.

As shown in FIG. 2, when the open button 51 is operated, the remote control open / close method of the drain plug in which the operation of the open / close button in the operation unit B is separated into the open button 51 and the close button 52 is performed together with this open operation. When the opening operation display unit 61 displays the opening operation, the opening signal transmission unit 71 wirelessly transmits the opening signal to the driving unit A1 in the drain plug A, and when the closing button 52 is operated, Along with this closing operation, the closing operation is displayed on the closing operation display unit 62, and a closing signal is wirelessly transmitted from the closing signal transmitting unit 72 to the driving unit A1 in the drain plug A, and is sent to the opening / closing signal receiving unit 1 of the driving unit A1. When the open / close signal is received and the open signal is received, the drive is performed if the open sensor (position sensor) 21 of the drain plug arrangement of the opening operation unit 31 is in the open position and the drain plug A is in the open position. Stop the motor of section A1 and open drain plug A If it is not located and is OFF, the motor is rotated forward and the drain plug is raised by normal rotation of the rotation transmission shaft mounted on the shaft portion of the drain plug, and the open sensor 21 is turned ON. It will be stopped when it is done.
The open state is transmitted wirelessly by the open state signal transmitting unit 41 and received by the open / closed state signal receiving unit 8 of the operation unit B.
Further, when the closing signal is received, if the closing sensor (position sensor) 22 of the draining plug arrangement of the closing operation unit 32 is in the closing position of the draining plug A, the motor of the driving unit A1 is turned on. If it is stopped and the drain plug A is not in the closed position and is OFF, the motor is reversed, and the drain plug is lowered by reversing the rotation transmission shaft installed in the shaft rod portion of the drain plug. As a result, when the closing sensor 22 is positioned ON, it is stopped.
The closed state is transmitted wirelessly by the closed state signal transmitting unit 42 and received by the open / closed state signal receiving unit 8 of the operation unit B.
When the open / close state signal received by the open / close state signal receiver 8 of the operation unit B switches the open / close operation display of the drain valve to the open / close state display, the open state display switching unit when the open / close state signal is an open state signal If the operation display is an open display, the operation is switched to the open state display from the closed operation display if the operation display is a closed display. When the open / closed state signal is a closed state signal, the closed state display switching unit 92 closes the open operation display from the open operation display if the operation display is the close display if the operation display is the close display. Switch to status display.

  In addition, when wireless is changed to digital signal processing, digital signal processing can be performed by simple devices such as a transmission unit and a reception unit, and this performance can be improved, downsizing, and low power consumption can be achieved. There is a feature.

  As shown in FIGS. 1 and 2, the drain plug remote control opening / closing device has an opening / closing button 5 for opening / closing the drain plug, and an opening / closing button 5 for opening / closing the drain plug. An open / close operation display unit 6 for displaying the open / close operation, an open / close signal transmitting unit 7 for displaying the open / close operation and transmitting the open / close operation to the drive unit A1 in the drain plug wirelessly, and an open / close state of the drain plug wirelessly The signal receiving unit 8 includes a switching unit 9 that switches from the opening / closing operation display to the opening / closing state display of the opening / closing operation display unit 6, and the drain plug A that opens and closes the drain port has a power source and a radio from the operation unit B Open / close signal receiving unit 1 for receiving an open / close signal by, an open / close sensor (position sensor) 2 for receiving the open / close signal and detecting the open / close position of the drain plug, and stop if ON / OFF of the open / close sensor is detected. If the open sensor is OFF An open / close state signal transmission unit that wirelessly transmits an open / close state signal signal generated by stopping the motor to the open / close state signal reception unit 8 of the operation unit B. 4 is provided.

  As shown in FIG. 2, the operation unit B may include an open button 51 and a close button 52, and may include an opening / closing operation display unit 6 that displays an opening / closing operation of the opening / closing button.

  As shown in FIGS. 3 and 4, the drain plug A includes a main body case 10 composed of a plug lid portion 101 and a shaft rod portion 102, and a plug cover 20 fitted into the main body case. Is fixed to the drainage fitting D, and a battery (power source) E, an open / close signal receiving unit 1, open / close sensors 21, 22 open / close operation unit 3, and open / close A status signal transmission unit 4 is embedded.

  By operating the open / close button 5 of the operation unit B separated from the drain port, an open / close signal is wirelessly transmitted to the drain plug A, and this open / close operation signal is received by the open / close signal receiving unit 1 of the drain plug A, Upon reception, the open / close sensor 2 (21, 22) detects the open / closed state of the drain plug A, operates the open / close operation unit 3 based on this detection, and uses the resulting open / closed state as an open / closed state signal. The data is transmitted from the transmission unit 4 to the operation unit B.

  The opening / closing operation unit 3 includes a motor 301, a speed reduction mechanism 302, a rotation gear 303, a rotation transmission shaft 304, a drain plug raising / lowering shaft 30 including a plug opening / closing sliding shaft 305, and the like. An opening / closing operation signal is received by the driving unit A1 of the drain plug A. Based on the opening / closing operation signal, the opening / closing sensor of the driving unit A1 detects the opening / closing state of the drain plug, receives the opening operation signal, and opens the sensor 21. If the motor is OFF, the motor 301 is rotated forward. If the motor is ON, the motor 301 is stopped. If the closing sensor 22 is OFF, the motor 301 is reversed. If the motor is ON, the motor 301 is stopped. To do. When the motor 301 is rotated forward or reversely, it is rotated and decelerated by the speed reduction mechanism 302 to rotate the rotation transmission shaft 304 in the shaft rod portion 102, and the rotation gear 303 is rotated by the rotation of the rotation transmission shaft. At the same time, the inside of the stopper opening / closing sliding shaft 305 fixed to the support member C is raised and lowered, and the outer periphery of the stopper opening / closing sliding shaft is raised and lowered by the rotation of the rotation transmission shaft 304, and the shaft rod portion 102 slides in the vertical direction. The drain plug is opened and closed.

  The open / close sensor 2 (21, 22) for detecting the open / close state of the drain plug is installed on the plug open / close sliding shaft 305 fixed to the support member C at a position where the shaft rod portion 102 is at the upper limit point. Then, the closed sensor 22 is installed at a position where the shaft rod portion 102 is at the lower limit point.

  A plug opening / closing sliding shaft 305 fixed to the support member C has a shock absorber spring F interposed between the rotation transmission shaft 304 and the plug opening / closing sliding shaft 305 above the rotation gear 303, so that the drain plug plug The impact on the lid 101 is absorbed.

  In addition, since this drain plug remote control opening and closing device can be remotely operated wirelessly from the operation part B that is separated from the drain port, the drain plug that moves up and down by opening and closing the drain port can be installed on its own drain port. Therefore, replacement at any time can be facilitated, and retrofitting work can be facilitated.

  It is a block diagram of a drain plug remote control opening and closing device.   It is a flowchart figure of a drain plug remote control opening / closing apparatus.   It is a closed state sectional view of the drain plug of the drain plug remote control opening and closing device.   It is sectional drawing of the open state of the drain plug of a drain plug remote control opening / closing apparatus.

Explanation of symbols

A Drain plug A1 Drive unit B Operation unit C Support member D Drainage fitting E Battery F Spring 1 Open / close signal receiver 2 Open / close sensor 21 Open sensor 22 Close sensor 3 Open / close operation unit 30 Drain plug lift shaft 301 Motor 302 Deceleration mechanism 303 Rotating gear 304 Rotation transmission shaft 305 Plug opening / closing sliding shaft 31 Opening operation unit 32 Closing operation unit 4 Opening / closing state signal transmitting unit 41 Opening state signal transmitting unit 42 Closed state signal transmitting unit 5 Open / close button 51 Open button 52 Close button 6 Opening / closing operation display unit 61 Opening operation display unit 62 Closing operation display unit 7 Opening / closing signal transmission unit 71 Opening signal transmission unit 72 Closing signal transmission unit 8 Opening / closing state signal receiving unit 9 Opening / closing state display switching unit 91 Opening state display switching unit 92 Closed state display switching unit 10 Main body case 101 Plug cover 102 Shaft bar 20 Plug cover

Claims (7)

  When the open / close button is operated, the open / close operation is displayed on the open / close operation display unit, and the open / close signal transmitted from the transmitter unit is received wirelessly by the open / close signal receiving unit provided in the drain plug at a remote location. Based on this open / close signal, the open / close operation unit stops, forwards and reverses the motor to open and close the drain plug, and sends the open / close state by this operation to the operation unit wirelessly. A drain valve remote control opening / closing method characterized in that the opening / closing operation display part is switched to an opening / closing state display of the drain valve.   When an open button and a close button are provided in the operation unit, and the open button is operated, the open operation is displayed together with this open operation, an open signal is transmitted wirelessly from the transmission unit to the drive unit in the drain plug, In addition, when the close button is operated, the close operation is displayed together with the close operation, and the close signal is wirelessly transmitted from the transmission unit to the drive unit in the drain plug, and the reception unit of the drive unit in the drain plug When the open / close signal is received and the open operation is received, the motor is stopped if the open sensor (position sensor) of the drain plug is ON, and if it is OFF, the motor is rotated forward to open the drain plug. When the closing operation is received, the motor is stopped if the closing sensor (position sensor) of the drain plug is ON, and if it is OFF, the motor is reversed and the drain plug is closed. Receiving part of the operation unit by wireless transmission It received, the drain plug remote control opening and closing method according to claim 1, wherein a switch to open and close status closing operation display unit from closing operation display.   The drain valve remote control opening and closing method according to claim 1, wherein the radio is digital signal processing.   An operation unit disposed at a remote position away from the drain outlet includes an opening / closing button for the drain plug, an opening / closing operation display unit for the opening / closing button, and an opening / closing signal for wirelessly transmitting the opening / closing operation to the driving unit in the drain plug A transmitter and a switching unit that wirelessly receives the opening / closing state of the drain plug and switches from the opening / closing operation display to the opening / closing state display, and the drain plug that opens and closes the drain outlet receives a power source and an opening / closing signal from the operation unit. An open / close signal receiving unit for receiving, an open / close sensor (position sensor) for detecting the open / close position of the drain plug upon receipt of the open / close signal, detection of ON / OFF of the open / close sensor, stopping if ON, OFF if open sensor is OFF A motor that normally rotates and reverses when the closed sensor is OFF, and an open / closed state signal transmission unit that wirelessly transmits an open / closed state signal by stopping the motor to a drain plug open / closed state signal receiving unit of the operation unit. Drainage Remote control switchgear.   The drain plug is composed of a main body case composed of a plug lid portion and a shaft rod portion, and a plug cover that covers the main body case. The shaft rod portion of the drain plug is supported by a drain fitting of the drain port, The drain plug remote control opening and closing device according to claim 4, further comprising a support member for raising and lowering the lid.   On the shaft rod part, an open / close sensor is installed to detect the open / close state of the drain plug, and a rotation transmission shaft that raises and lowers the drain plug by the rotation of the motor is installed. The drain plug remote control opening / closing device according to claim 5, further comprising a plug opening / closing sliding shaft for sliding the drain plug in the axial direction to open and close the drain port.   The stopper opening / closing sliding shaft fixed to the support member that opens and closes the drain outlet by sliding the drain plug in the axial direction includes a spring of the shock absorber that absorbs the impact in the axial direction and the rotation transmission shaft. The drain valve remote control opening and closing device according to claim 6, which is provided between

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