JP7212932B2 - Electric operating device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric operating device for remotely operating a plug lid for opening and closing a drain provided in a bathtub to switch the open/closed state of the drain.

An operation device for switching the open/closed state of a drain port formed at the bottom of the bathtub by remote control is sometimes provided in or near the bathtub.

As an operating device, an electric operating device capable of electrically switching the opening/closing state of a drain port is known. Such an electric operating device includes an energization operation section (electric motor) that can be operated by energization, a rotating body (worm wheel) that can rotate as the energization operation section operates, and a reciprocating movement that accompanies the rotation of the rotating body. It is possible and has a transmission part (screw barrel, operation shaft, transmission shaft, and release wire) for transmitting the driving force due to the rotation of the rotating body to the plug lid side (for example, Patent Document 1, etc.). reference).

In this electric operating device, the energizing operation section, the rotating body, and the ends of the transmission section (screw tube, operation shaft, and transmission shaft) are housed inside a predetermined case (operation tube and drive box). ing. A predetermined tube (guide tube) is connected to a predetermined portion of the case, and the internal space of the tube and the internal space of the case communicate with each other. In addition, the end portion of the tubular body opposite to the side connected to the case is installed on the drain port side, and is in a state in which waste water passing through the drain port can flow.

JP 2003-105824 A

By the way, in the case of the above-described electric operation device, the internal space of the portion that accommodates the energizing operation portion, the internal space of the portion that accommodates the rotating body, and the internal space of the portion that accommodates the end portion of the transmission portion. are in communication with each other. As a result, there is a risk that the drainage will flow through the tubular body and reach the internal space of the portion where the energized operation section is accommodated, leading to failure of the energized operation section and deterioration of safety.

The present invention has been made in view of the above circumstances, and its object is to be able to extremely effectively prevent drainage from reaching the internal space of the portion where the current-carrying operation part is accommodated through the tubular body, An object of the present invention is to provide an electric operating device capable of preventing failure of an energizing operation part and improving safety.

Each means suitable for solving the above object will be described below by itemizing. It should be noted that actions and effects peculiar to the corresponding means will be added as necessary.

Means 1. An electric operation device capable of remotely operating a plug cover for opening and closing a drain provided in a bathtub in a bathroom unit to switch the open/closed state of the drain,
an energization operation unit operable by energization;
a rotating body rotatable by the operation of the energizing operation section;
a transmission part capable of reciprocating along with the rotation of the rotating body, for transmitting a driving force due to the rotation of the rotating body to the stopper lid side;
A first constituent part in which the energizing operation part is arranged, a second constituent part in which the rotating body is arranged, and a third constituent part in which at least an end of the transmission part is arranged. and a case in which the internal space of the first component, the internal space of the second component, and the internal space of the third component communicate in this order,
One end side portion of the tubular body into which waste water passing through the drain port can flow is connected to the third component, and the internal space of the third component and the internal space of the tubular body are communicated. cage,
An annular seal portion disposed between the second component portion and the rotating body is provided, and the seal portion seals the internal space of the case on the side of the first component portion and the third component portion in the internal space of the case. The internal space on the side is spatially separated, and further,
A space formed by the internal space of the third component side communicating with the internal space of the tubular body in the internal space of the case and the internal space of the tubular body is sealed except for the other end side opening of the tubular body. An electric operation device characterized by being set to a state.

According to the above means 1, the case has a first component, a second component, and a third component, and the internal spaces of these components communicate in this order. A tubular body into which waste water can flow is connected so that the internal space of the tubular body communicates with the internal space of the third component. Therefore, there is a possibility that the waste water that has passed through the tubular body may enter the internal space of the third component, and eventually reach the internal space of the first component, in which the electrifying operation section is arranged.

In this regard, according to the above means 1, the space formed by the inner space of the case on the side of the third component communicating with the inner space of the tubular body and the inner space of the tubular body communicating with this inner space is The body is sealed except for the opening on the other end side. Therefore, the air existing in the sealed space can effectively suppress the movement of the waste water through the tubular body to the inner space side of the case. As a result, it is possible to prevent intrusion of waste water into the internal space of the case (the internal space on the side of the third component) that has passed through the tubular body.

Furthermore, according to the above means 1, the internal space on the first component side and the internal space on the third component side of the internal space of the case are separated by the seal portion disposed between the second component and the rotating body. are considered to be spatially separated. Therefore, even if the drainage reaches the internal space of the case (the internal space on the side of the third component) through the tubular body, the drainage will enter the internal space of the first component where the current-carrying part exists. It is possible to more reliably prevent it from being put away.

Combined with the above effects, according to the above means 1, it is possible to extremely effectively prevent drainage from reaching the inner space of the first component through the tubular body. As a result, it is possible to more reliably prevent failure of the energization operation section and to obtain good safety.

The "pipe body" may be a cylindrical outer tube in which a transmission part (for example, an inner wire) is arranged on the inner circumference, or a transmission part is arranged inside and guides the transmission part to the plug lid side. and a guide tube having the function of

The term "bathroom unit" refers to a box-like structure consisting of, for example, wall panels, a ceiling, doors, windows, etc., and defining an internal space in which the water storage space of the bathtub is arranged and an external space.

Means 2. The electric operating device according to means 1, wherein at least a portion of the case is positioned below the flange portion of the bathtub.

According to the above means 2, at least a portion of the case is positioned below the flange portion of the bathtub (the portion extending outward from the upper portion of the side wall portion of the bathtub forming the water storage space). Therefore, the transmission portion extending from the case to the stopper lid side can be made relatively short. Therefore, handling of the transmission portion is facilitated, and workability related to installation of the apparatus can be enhanced. In addition, the transmission portion can smoothly transmit the driving force generated by the rotation of the rotating body to the stopper lid side without any loss.

On the other hand, when at least a part of the case is positioned below the flange portion as in the above means 2, there is a possibility that the drainage may easily reach the inner space side of the case through the tubular body. Therefore, although there is a greater concern about the adverse effects of the drainage on the energized operation part, such concern can be dispelled by adopting the above-described means 1. In other words, the means 1 is particularly effective when at least part of the case is positioned below the flange.

Means 3. 3. The electric operating device according to means 1 or 2, wherein the first component is attached to the wall of the bathroom unit in a state positioned outside the bathroom unit.

According to the above means 3, the electric operating device is attached to the wall of the bathroom unit in a state where the first constituent part where the electrifying operation part is arranged is positioned outside the bathroom unit. Here, since the humidity outside the bathroom unit is usually lower than the humidity inside the bathroom unit, compared to the case where the entire first component is installed inside the bathroom unit, the adverse effect of moisture on the energized operation part. can be further suppressed. As a result, it is possible to more reliably prevent failures of the current-carrying operation section and improve safety.

In addition, the temperature outside the bathroom unit tends to be lower than inside the bathroom unit, and the temperature fluctuates less. As a result, it is possible to improve the operation stability of the energization operation section.

In addition, when a cable for supplying electric power to the energizing operation unit and a cable for transmitting and receiving signals related to operation control of the energizing operation unit are provided, such cables are arranged outside the bathroom unit. It is possible to more reliably prevent the cable from being abnormal due to moisture. In addition, since there is no need to seal the cable or the like to prevent adverse effects due to moisture, it is convenient in terms of the structure of the device and the manufacturing cost.

Means 4. The first component is located outside the bathroom unit and the third component is located inside the bathroom unit through the attachment hole formed in the wall of the bathroom unit. The electric operating device according to means 3, characterized in that it is attached to the wall of the bathroom unit so as to block the.

According to the means 4, the electric operating device is in a state where the first component is positioned outside the bathroom unit and the third component is positioned inside (inside) the bathroom unit. Therefore, it is possible to reduce the amount of protrusion of the electric operation device toward the outside from the wall of the bathroom unit. As a result, even if the gap formed between the wall of the bathroom unit and the wall of the building arranged outside thereof is relatively small, the electric operation device can be mounted, resulting in a good degree of mounting freedom. can be obtained.

Furthermore, by blocking the mounting hole, it is possible to suppress the movement of air (moisture) from inside the bathroom unit through the mounting hole to the outside of the bathroom unit, thereby ensuring that the outside of the bathroom unit is kept in a low humidity state. can be maintained at Therefore, it is possible to more reliably suppress the adverse effects of moisture on the energization operation part and the like. In addition, adverse effects of water (humidity) on structures located outside the bathroom unit can be more reliably prevented.

In addition, since the electric operation device is attached to the wall of the bathroom unit so as to block the mounting hole, the step of mounting the electric operation device and the step of blocking the mounting hole can be performed at the same time. Therefore, workability can be effectively improved.

Means 5. The rotating body is
a large-diameter portion positioned on the inner space side of the first component;
a small diameter portion having a smaller diameter than the large diameter portion and located on the inner space side of the third component portion,
5. The electric operating device according to any one of means 1 to 4, wherein the seal portion is arranged between the second component portion and the small diameter portion.

According to the means 5, the seal portion is arranged between the small diameter portion and the second component portion. Therefore, the diameter of the seal portion can be reduced, and the frictional force generated between the seal portion and the second component or the like can be reduced. As a result, the driving force generated by the rotation of the rotating body can be more smoothly transmitted to the stopper lid side.

Moreover, since the diameter of the seal portion is small, the space formed by the internal space on the side of the third component and the internal space of the tubular body can be maintained in a more reliably sealed state. As a result, it is possible to more reliably prevent the drainage from moving through the tubular body to the inner space side of the case for a long period of time, and the effect of preventing failure of the energized operation part can be maintained for a long period of time. It can be stably exhibited.

Means 6. The large diameter portion has a cylindrical shape,
Inside the large-diameter portion, an intervening portion is inserted that is capable of rotating the rotating body by rotating in accordance with the operation of the current-carrying portion while in contact with the inner surface of the large-diameter portion. ,
Means 5, further comprising a clutch mechanism capable of idling the large diameter portion with respect to the intervening portion when a load generated between the large diameter portion and the intervening portion exceeds a predetermined amount. Electric operating device.

According to the means 6, when the load generated between the large diameter portion and the intermediate portion exceeds a predetermined amount, the large diameter portion can be idly rotated with respect to the intermediate portion by the clutch mechanism. Therefore, when the drain port is in the open state, that is, when the plug lid is in the upward movement state, even if the electrical operation of the plug lid becomes impossible due to a power failure or a failure of the energization operation part, etc., the manual operation can be performed. The stopper lid can be moved downward by pressing . As a result, it is possible to manually switch the drain port from the open state to the closed state, and it is possible to respond to requests such as filling the bathtub with water in the event of a power failure, for example.

Furthermore, when the drain port is manually switched from the open state to the closed state, the large-diameter portion idles relative to the intervening portion, which reduces the damage and deformation of the transmission portion and rotating body due to the application of load. can be reliably prevented. In addition, by preventing damage to the transmission section and the like, even if the drain port is manually switched from the open state to the closed state, there is no hindrance to normal use after the power is restored.

In addition, when a relatively large downward load is applied to the stopper, such as when the stopper is stepped on while the drain port is open (that is, when the stopper is moved upward), , it is possible to prevent damage or deformation of the transmission part, the rotating body, etc. due to the large-diameter part idling with respect to the intervening part.

Means 7. an end portion of the transmission portion is configured by a rack having a plurality of teeth arranged in a reciprocating direction of the transmission portion;
The electric operating device according to any one of means 1 to 6, wherein the rotating body has a gear portion that meshes with the teeth of the rack.

According to the means 7, the mechanism for transmitting the driving force from the rotating body to the transmission section can be configured simply, and the internal space of the case on the side of the third component can be made relatively small. can do. Therefore, the space formed by the internal space on the side of the third component and the internal space of the tubular body can be easily sealed. In addition, the size of the device (case) can be reduced, and the manufacturing cost can be reduced and workability related to installation of the device can be improved more effectively.

1 is a schematic perspective view showing a bathroom unit, an electric drain plug device system, and the like; FIG. It is a partially broken front view of a drain plug device. It is a front view of an electric operating device. It is a side view of an electric operating device. It is a bottom view of an electric operating device. FIG. 4 is a cross-sectional view taken along line JJ of FIG. 3; 6 is a cross-sectional view taken along line KK of FIG. 5; FIG. FIG. 4 is an exploded perspective view of a second transmission rotating part and a rotating body; In another embodiment, it is a cross-sectional schematic diagram showing an electric operation device and the like when only an outer tube is provided as a tubular body.

An embodiment will be described below with reference to the drawings. FIG. 1 is a simplified schematic diagram of a bathroom unit 110 constituting a bathroom and an electric drain plug operating system 1 provided corresponding to the bathroom unit 110. As shown in FIG. First, prior to describing the electric drain plug operating system 1, the general configuration of the bathroom unit 110, the bathtub 100 arranged in the bathroom unit 110, and the like will be described.

The bathroom unit 110 is a box-shaped structure defining an internal space in which the bathtub 100 is arranged and an external space. The bathroom unit 110 has a plurality of walls (wall panels) 111 surrounding the four sides (in FIG. 1, illustration of the two walls on the front side is omitted, and the two walls 111 on the back side are simplified by two-dot chain lines). ), the ceiling 112 provided on the upper part of each wall 111, the waterproof pan 113 arranged below the bathtub 100, the floor board 114 of the washing place constituting the washing place, and the opening for the door formed in the wall 111 Doors and windows (not shown) corresponding to the windows (not shown) are provided, and a bathroom is formed by these.

A predetermined one of the plurality of walls 111 has a mounting hole 111A and a plurality of screw holes 111B positioned around the mounting hole 111A (see FIG. 6) below a flange portion 103, which will be described later. ) are formed through each. In addition, in order to secure a larger internal space of the bathroom unit 110, the wall 111 of the bathroom unit 110 is in close proximity to the wall of the building outside the bathroom unit 110. A gap formed between the wall and the wall is relatively small (for example, 30 mm or less).

Also, the ceiling 112 is provided with an inspection opening 112A for inspecting various parts arranged on the back side of the ceiling 112 . The inspection opening 112A is normally closed with a cover (not shown), but the cover can be removed from the inspection opening 112A by pushing up the cover.

Bathtub 100 is installed in bathroom unit 110. Bathtub 100 has a bottom wall portion 101 forming the bottom surface thereof, a side wall portion 102 extending upward from the outer edge of bottom wall portion 101, and an upper end edge of side wall portion 102. and a flange portion 103 extending outward. A drain port 104 (see FIG. 2) is formed through the bottom wall portion 101 . In addition, an apron 105 (in FIG. 1, the apron 105 is simplified by a two-dot chain line) is provided so as to cover the side wall portion 102 located on the washing place side of the bathroom unit 110, and the apron 105 always , the rear side of the side wall portion 102 and the electric operation device 5, which will be described later, are hidden. However, by removing the apron 105, it is possible to handle the electric operation device 5 from the washing area side.

Next, the electric drain plug operating system 1 will be described. An electric drain plug operating system 1 includes a drain plug device 2 , a power supply device 3 , an input device 4 and an electric operating device 5 .

First, the drain plug device 2 will be described. The drain plug device 2 includes a drain port member 21, a pipe 22, an attachment member 23, a support shaft mechanism 24, and a plug lid 25, as shown in FIG.

The drain port member 21 is formed in a cylindrical shape, and is inserted into the drain port 104 with the center axis of the drain port member 21 substantially aligned with the center axis of the drain port 104 . The drain port member 21 includes a collar portion 21A that protrudes radially outward at its upper end portion, and a male thread portion 21B that is formed on the outer periphery below the collar portion 21A.

The pipe 22 includes a cylindrical main pipe 221 extending in the vertical direction and a connection pipe 222 branching from the main pipe 221 and extending in the horizontal direction.

The main pipe 221 is provided corresponding to the drain port 104 and is a part that constitutes a flow path for the drainage flowing through the drain port 104 . The main tube 221 has a female threaded portion 221A on the inner circumference of one end (upper end) thereof, into which the male threaded portion 21B can be screwed. The male threaded portion 21B is screwed into the female threaded portion 221A, and the bottom wall portion 101 is sandwiched between the flange portion 21A and the upper end surface of the pipe 22, thereby connecting the drain port member 21 and the pipe 22. Both are attached to the bathtub 100 .

In addition, in the present embodiment, an elastically deformable material (for example, resin, rubber, etc.) is formed between the upper surface of the bathtub 100 (bottom wall portion 101) and the drain port member 21 (flange portion 21A). An annular sealing member 26 is arranged, and an annular sealing member 27 similarly formed of an elastically deformable material is arranged between the upper end surface of the pipe 22 and the lower surface of the bathtub 100 (bottom wall portion 101). It is These seal members 26 and 27 prevent water from leaking from between the drain port member 21 and the pipe 22 and the bathtub 100 .

The connection pipe 222 is a portion that functions as a connected portion of the guide tube 61 . The guide tube 61 has a cylindrical shape with only one end and the other end open, and serves to guide an inner wire 55B and an outer tube 62, which will be described later, from the electric operation device 5 side to the drain plug device 2 side. It is. The guide tube 61 has one end watertightly connected to the electric operation device 5 and the other end watertightly connected to the connecting pipe 222 . In this embodiment, the waste water that has passed through the drain port 104 and has flowed into the main pipe 221 can flow into the guide tube 61 through the connection pipe 222 . In this embodiment, the guide tube 61 corresponds to the tubular body.

The attachment member 23 is for holding the support shaft mechanism 24 at the center of the internal space of the drain port member 21 and the pipe 22 (main pipe 221), that is, at the center of the drain channel. The attachment member 23 includes a cylindrical holding portion 23A located inside, a cylindrical outer ring portion 23B provided concentrically with the holding portion 23A on the outside of the holding portion 23A, and a holding portion 23A and the outer ring. A plurality of connecting portions 23C connecting the portions 23B are provided. The holding portion 23A holds the support shaft mechanism 24 in a state in which the support shaft mechanism 24 is inserted through the inner periphery thereof. Further, the outer ring portion 23B is a portion to be attached to the drain port member 21, and by fixing the outer ring portion 23B to the inner periphery of the drain port member 21, the support shaft is held by the holding portion 23A and thus by this. A mechanism 24 is centrally located in the drainage channel. 23 C of connection parts are provided in multiple numbers at equal intervals along the circumferential direction of 23 A of holding|maintenance parts, and support 23 A of holding|maintenance parts. The drainage that has flowed into the main pipe 221 flows down through the gaps between the connecting portions 23C.

The support shaft mechanism 24 includes a cylindrical portion 24A, a return spring 24B, and a support shaft 24C, and is for moving the plug lid 25 up and down by vertical movement of the support shaft 24C.

The cylindrical portion 24A has a cylindrical shape and is held by the holding portion 23A in a state that it cannot move up and down. A long tubular outer tube 62 is connected and fixed to the lower end of the tubular portion 24A. One end of the outer tube 62 is connected to the electric operation device 5 (see FIG. 7), and the other end is connected to the cylindrical portion 24A. An inner wire 55B, which will be described later, is arranged on the inner periphery of the outer tube 62 so as to be reciprocally movable.

The return spring 24B is a spring member provided between the cylindrical portion 24A and the support shaft 24C, and applies force in the backward movement (downward movement) direction to the support shaft 24C.

The support shaft 24C, which supports the cap 25 at its upper portion, is arranged on the inner periphery of the cylindrical portion 24A and is vertically movable with respect to the cylindrical portion 24A. The support shaft 24C in this embodiment does not have a special mechanism for absorbing the load when a downward force is applied to the stopper lid 25 in an upwardly moved state. The term "special mechanism" refers to a mechanism exclusively provided for the purpose of absorbing a load, such as a shock absorber with a spring.

The plug lid 25 includes a disk-shaped plug lid main body portion 25A and an annular packing portion 25B provided on the back side of the plug lid main body portion 25A toward the outer side. The plug lid 25 is attached to the support shaft 24C by inserting the tip of the support shaft 24C into a cylindrical portion provided in the center of the back side of the plug lid main body 25A and locking it. Further, the stopper lid 25 can be removed from the support shaft 24C by applying a force in the direction of pulling out the support shaft 24C from the cylindrical portion. That is, the plug lid 25 can be relatively easily attached to and removed from the support shaft 24C without using a special tool or the like. Incidentally, the cap 25 may be constructed so as to be simply placed on the tip of the support shaft 24C. In this case, it becomes possible to attach and detach the plug lid 25 to and from the support shaft 24C more easily.

In this embodiment, the support shaft 24C and the plug cover 25 move upward, and the packing portion 25B is separated from the drain port member 21, thereby opening the drain port 104. FIG. On the other hand, in this state, the support shaft 24C and the stopper lid 25 move downward, and the entire outer peripheral portion of the packing portion 25B comes into contact with the drain port member 21, thereby closing the drain port 104 (see FIG. 2). .

Next, the power supply device 3 and the input device 4 will be described. The power supply device 3 is for supplying electric power to the electric operation device 5, and is mounted on the ceiling 112 near the inspection opening 112A, as shown in FIG. Installation and maintenance of the power supply device 3 are performed using the inspection opening 112A.

The power supply device 3 is connected to a power source (not shown) with a predetermined output (for example, 100V output) and the electric operation device 5 by predetermined power cables 71 and 72, respectively. The power supply device 3 steps down the power from the power supply and supplies it to the electric operation device 5 . The power cables 71 and 72 are installed along the wall 111 and the ceiling 112 outside the bathroom unit 110 .

The input device 4 is to be operated by the user when switching the opening/closing state of the drain port 104 electrically. The input device 4 is connected to the electric operation device 5 via a predetermined signal cable 73 and is capable of outputting various signals to the electric operation device 5 . The signal cable 73 is installed along the wall 111 outside the bathroom unit 110 .

Further, the input device 4 in this embodiment is provided inside the bathroom unit 110 . However, the installation location of the input device 4 is not limited to this, and the input device 4 may be installed, for example, in a predetermined room (for example, kitchen) outside the bathroom. Also, the input device 4 may be a portable device, or a plurality of input devices 4 may be provided. Furthermore, the signal cable 73 may be eliminated and the input device 4 and the electric operation device 5 may be configured to be wirelessly communicable.

Further, the input device 4 includes an input unit (not shown) for inputting information, which is composed of, for example, a plurality of push buttons. As the input unit, an input unit (referred to as a "closed time input unit") that is operated (for example, pressing) when the drain port 104 is closed, and an input unit that is operated when the drain port 104 is opened. An input section (referred to as an "open input section") is provided. The closed time input unit is configured by, for example, a push button or the like with a character such as "closed" or a graphic indicating that the drain port 104 is in a closed state. ” or a push button or the like with a graphic indicating that the drain port 104 is in an open state. When the closing input unit is operated (pressed), a predetermined closing request signal is output from the input device 4 to the electric operation device 5 (especially the control board 57 described later). On the other hand, when the opening input section is operated, a predetermined opening request signal is output from the input device 4 to the electric operation device 5 (in particular, a control board 57 described later).

Next, the electric operating device 5 will be described. The electric operation device 5 is a device for remotely operating the cap 25 to switch the open/closed state of the drain port 104 . The electric operating device 5 is attached to the wall 111 of the bathroom unit 110, as shown in FIGS. 6 and 7, the electric operating device 5 includes a case 51, a motor 52, a deceleration transmission section 53, a rotor 54, a transmission section 55, a seal section 56, and a control board 57. .

The case 51 accommodates the motor 52, the rotating body 54, etc., and functions as a mounting portion for the wall 111 of the bathroom unit 110. As shown in FIG. The case 51 has a first constituent portion 511 , a second constituent portion 512 and a third constituent portion 513 . Each component 511, 512, 513 has an internal space, and the internal space of the first component 511, the internal space of the second component 512, and the internal space of the third component 513 are arranged in this order. It is set to be in a communicating state.

The first component portion 511 includes a box-shaped accommodation portion 5111 in which the motor 52, the control board 57, etc. are accommodated, and a circular attachment flange portion 5112 protruding from the outer surface of the box-shaped accommodation portion 5111. I have.

The box-shaped housing portion 5111 is configured by assembling a plurality of parts. In addition, the mating portion of each part is arranged outside the bathroom unit 110, and is configured without a sealing member for ensuring watertightness.

A plurality of screw holes 5112A penetrating in the plate thickness direction are formed in the mounting flange 5112 . Then, the first component portion 511 is inserted into the mounting hole 111A, and screwed using both screw holes 5112A and 111B in a state where the positions of the screw hole 111B of the wall 111 and the screw hole 5112A are aligned. By fixing, the case 51 and the electric operation device 5 are attached to the wall 111 .

In this embodiment, when the electric operation device 5 is attached to the wall 111, the first component 511 is positioned outside the bathroom unit 110, and the third component 513 is positioned inside the bathroom unit 110, In addition, the case 51 blocks the attachment hole 111A. In addition, when the electric operation device 5 is attached to the wall 111 , at least a portion of the case 51 (in this embodiment, a portion of the case 51 that is arranged inside the bathroom unit 110 ) is positioned below the flange portion 103 . It is positioned (see FIG. 1). A sealing member may be arranged between the wall 111 and the mounting flange 5112 in order to more reliably prevent water from flowing out of the bathroom unit 110 from the inside of the bathroom unit 110 through the mounting hole 111A. In addition, a sealing member (for example, a seal washer) is arranged between the bearing surface of the threaded part inserted through the threaded holes 111B and 5112A and the mounting flange 51112 to further prevent water from flowing out of the bathroom unit 110. It may be configured to be reliably preventable.

The second component part 512 is a part in which the rotating body 54 is accommodated. The second constituent portion 512 has a shape in which two cylindrical portions having different outer diameters are stacked on top of each other, and protrudes from the first constituent portion 511 .

The third component portion 513 is a portion in which at least an end portion of the transmission portion 55 is arranged. The third constituent portion 513, in appearance, crosses the tip side portion of the second constituent portion 512 (the portion on the side opposite to the first constituent portion 511), and one end portion (upper end portion) is closed and the other portion is closed. It has a tubular shape with an open end (lower end). Further, in the present embodiment, the third component portion 513 extends vertically downward from one end side to the other end side, and the opening on the other end side opens vertically downward.

One end side portion of the guide tube 61 is connected to the third component portion 513 . More specifically, the third component portion 513 is inserted through one end portion of the guide tube 61, and the one end portion of the guide tube 61 is fitted onto the third component portion 513 so that the one end portion of the guide tube 61 is It is watertightly connected to the outer circumference of the third component 513 . As a result, the internal space of the third constituent portion 513 and the internal space of the guide tube 61 communicate with each other.

A guide part 514 and a tube fixing part 515 are arranged in the third component 513 (see FIG. 7).

The guide part 514 has the function of keeping the one end portion of the inner wire 55B, which will be described later, in a linearly extending state, and of fixing the end of the outer tube 62 . The guide part 514 has a thin cylindrical shape with a brim-shaped portion at one end, and the other end side portion (thin cylindrical portion) is located on the far side of the third component portion 513, and the brim-shaped portion It is arranged in a state of being locked to a stepped portion provided inside the third component portion 513 .

The tube fixing component 515 is a component for fixing the one end portion of the outer tube 62 to the third component 513 . The tube fixing part 515 includes a tubular holding portion that holds a relatively large-diameter flared portion provided at one end of the outer tube 62 on the inner circumference, and a tubular holding portion that is connected to the holding portion and is elastically deformable along the inward and outward directions. A deformed portion is provided, and an attachment projection is provided on the outer periphery of the deformed portion.

In this embodiment, the guide component 514 is arranged in the third component 513, and one end of the outer tube 62 is held by the inner periphery of the holding portion of the tube fixing component 515. is inserted into the inner circumference of the third constituent portion 513, and the protrusion of the tube fixing component 515 is fitted into the hole portion formed through the third constituent portion 513, whereby the inner circumference of the third constituent portion 513 The tube fixing component 515 is fixed to the outer tube 62 , and the one end portion of the outer tube 62 is held by the guide component 514 and the tube fixing component 515 .

The motor 52 is a drive source for electrically opening and closing the drain port 104 and is arranged inside the first component 511 . The motor 52 has a motor shaft (not shown) operable by energization, and the motor shaft is bidirectionally rotatable. A driving force generated by the rotation of the motor shaft is transmitted to the deceleration transmission portion 53 .

The deceleration transmission part 53 is arranged in the first component part 511 to transmit driving force from the motor 52 (motor shaft) to the rotating body 54 while reducing the rotation speed (while increasing the torque). . The deceleration transmission unit 53 includes a deceleration gear group (not shown) composed of a plurality of gears that rotate when force is applied from the motor 52 (motor shaft), and a first transmission that rotates when force is applied from the deceleration gear group. It has a rotating part 531 and a second transmitting rotating part 532 that rotates when a force is applied from the first transmitting rotating part 531 . The first transmission rotation part 531 and the second transmission rotation part 532 are coaxially connected by using, for example, serrations, and the first transmission rotation part 531 and the second transmission rotation part 532 are connected as the motor 52 operates. rotate on the same axis of rotation. The gears constituting the reduction gear group are rotatable by the rotation of the motor shaft, but are not rotated by the force applied from the first transmission rotating portion 531 .

Further, as shown in FIG. 8, the second transmission rotating portion 532 includes a small diameter connecting cylinder portion 5321 having a relatively small diameter and connected to the first transmission rotating portion 531, and a connecting cylinder portion 5321 having a larger diameter than the small diameter connecting cylinder portion 5321. and an intervening portion 5322 of .

The intervening portion 5322 has a cylindrical shape as a whole, and is provided with a plurality of slits 5322A extending in the axial direction at regular intervals along the circumferential direction. In addition, a large number of protruding locking portions 5322B are formed continuously along the circumferential direction of the intervening portion 5322 on the outer periphery of the intervening portion 5322 on the end side except for the portion where the slit 5322A is formed. In the present embodiment, the presence of the slit 5322A allows the intervening portion 5322 and thus the locking portion 5322B to be elastically deformed along the inner and outer directions (the radial direction of the intervening portion 5322).

The rotating body 54 is rotated by the operation of the motor 52, and is provided between the deceleration transmission portion 53 and the transmission portion 55 in the second component portion 512 (see FIGS. 6 and 7). The force received from is transmitted to the transmission portion 55 . The rotating body 54 has a large-diameter portion 541 located on the inner space side of the first component portion 511 (the deceleration transmission portion 53 side), and a smaller diameter than the large-diameter portion 541, and is located on the inner space side of the third component portion 513. and a small-diameter portion 542 located on the (transmission portion 55 side).

The large-diameter portion 541 has a cylindrical shape and is a portion into which the intervening portion 5322 is inserted. Inside the large-diameter portion 541, a large number of projecting locked portions 541A are continuously formed along the circumferential direction of the large-diameter portion 541. As shown in FIG. The locking portion 5322B of the intermediate portion 5322 inserted into the large-diameter portion 541 and the locked portion 541A are locked along the rotation direction of the rotating body 54 . As a result, as the motor 52 operates, the intervening portion 5322 rotates while being in contact with the inner surface of the large diameter portion 541 (locked portion 541A), thereby rotating the rotor 54 .

In addition, in the present embodiment, when the plug cover 25 is pressed downward while the drain port 104 is in an open state (that is, the plug cover 25 is in an upward movement state), the intervening portion 5322 (locking 5322B) and the large-diameter portion 541 (locked portion 541A) exceeds a predetermined amount, the intervening portion 5322 and thus the locking portion 5322B elastically deform radially inward. The locking state of the locking portion 5322B with respect to the portion 541A is insufficient, and the large diameter portion 541 is configured to idle with respect to the intervening portion 5322. As shown in FIG. In this embodiment, the clutch mechanism 58 is configured by the elastically deformable locking portion 5322B and the locked portion 541A.

A magnet arrangement hole 541B is formed through the largest diameter portion of the large diameter portion 541 . In this embodiment, two magnet arrangement holes 541B are provided along the circumferential direction of the large diameter portion 541 with an interval therebetween, and a magnet (not shown) is inserted into each magnet arrangement hole 541B. This magnet is used to detect the rotation angle of the rotor 54 . Only one magnet may be provided, or three or more magnets may be provided for adjusting the degree of opening of the drainage channel (vertical position of the cap 25).

The small diameter portion 542 has a cylindrical shape and is provided coaxially with the large diameter portion 541 . Two annular grooves (see FIG. 6) for arranging the seal portion 56 are formed on the outer periphery of the base end side (large diameter portion 541 side) of the small diameter portion 542 . A gear portion 542A is formed at a portion on the tip side of .

Returning to FIGS. 6 and 7, the transmission part 55 is for transmitting the driving force generated by the rotation of the rotating body 54 to the plug lid 25 (drain plug device 2) side. The transmission part 55 is reciprocally movable with the rotation of the rotating body 54, and includes a rack 55A and an inner wire 55B arranged in series.

The rack 55A has a plurality of teeth arranged in the reciprocating direction of the transmission portion 55 and is meshed with the gear portion 542A (see FIG. 7). The rack 55A moves within the third component portion 513 while sliding on the inner surface of the third component portion 513 as the rotor 54 rotates. That is, the movement of the rack 55A is guided by the inner surface of the third component portion 513 . Further, the rack 55A has a hole extending along the moving direction thereof, and one end portion of the inner wire 55B is inserted through the hole.

The inner wire 55B is, for example, a wire-like component made up of a core coil or a twisted wire, and is arranged on the inner periphery of the outer tube 62 so as to be reciprocally movable, as described above. One end portion of the inner wire 55B protrudes from one end opening of the outer tube 62, passes through the inner periphery of the guide member 514, and is arranged in the accommodation space of the rack 55A in the third component portion 513. As shown in FIG. Further, one end of the inner wire 55B is inserted through the hole of the rack 55A and is capable of contacting the rack 55A along the reciprocating direction of the rack 55A.

On the other hand, the other end of the inner wire 55B can contact the support shaft 24C along the reciprocating direction of the support shaft 24C. As the inner wire 55B moves forward (moves from the side of the electric operation device 5 to the side of the drain plug device 2), the support shaft 24C is lifted by the other end portion of the inner wire 55B. 25 moves up.

The seal portion 56 is an annular member made of an elastically deformable material (eg, rubber, resin, etc.), and in this embodiment, is configured by an X-ring having an X-shaped cross section. In the present embodiment, two seal portions 56 are provided in a state in which they are spaced apart from each other along the rotation axis direction of the rotating body 54 . Each seal portion 56 is arranged in the groove of the small diameter portion 542 and is sandwiched between the inner surface of the second component portion 512 and the rotor 54 . The internal space of the case 51 on the side of the first component 511 and the internal space on the side of the third component 513 are spatially separated by the seal portion 56 .

Here, in the present embodiment, the internal space of the third component portion 513 is sealed by the seal portion 56 except for the end opening thereof, and as described above, the guide tube 61 is positioned against the outer periphery of the third component portion 513. are watertightly connected, and the internal space of the third component 513 and the internal space of the guide tube 61 communicate with each other. Therefore, of the internal space of the case 51, the space formed by the internal space of the guide tube 61 on the side of the third component 513 communicating with the internal space of the guide tube 61 and the internal space of the guide tube 61 is located on the other end side of the guide tube 61 (drain plug It is in a sealed state except for the opening on the device 2 side). As a result, the movement of the waste water through the guide tube 61 to the inner space side of the case 51 can be suppressed by the air present in the sealed space. More specifically, even if the interior of the portion of the guide tube 61 extending substantially horizontally from the connecting pipe 222 side is filled with waste water, the air present in the sealed space causes the drain plug device of the guide tube 61 to move. 2 side toward the case 51 side (the case 51 side) from entering (rising up) ahead of the portion that turns upward toward the case 51 side; Movement of the waste water through the tube 61 can be suppressed.

Next, the control board 57 will be explained. The control board 57 is composed of, for example, a microcomputer or the like, and is a device for controlling power supply to the motor 52 . The control board 57 is installed inside the first component 511 . Also, the control board 57 is connected to the power supply device 3 by a power supply cable 72 and is supplied with electric power from the power supply device 3 .

Further, the control board 57 has a magnetic sensor (not shown) for detecting the magnetism of the magnet installed in the magnet arrangement hole 541B. The magnetic sensor is composed of, for example, a Hall element or the like. The control board 57 can detect the rotation angle of the rotating body 54 and the opening/closing state of the drain port 104 by detecting the magnetism generated by the magnet with the magnetic sensor.

In addition, the control board 57 is connected to the input device 4 via a signal cable 73 and configured to receive the open request signal or the close request signal from the input device 4 . The control board 57 controls the operation of the motor 52 according to the current open/closed state of the drain port 104 when the open request signal or the close request signal is input.

That is, when the control board 57 detects that the drain port 104 is closed by the magnetic sensor when the open request signal is input, the control board 57 causes the motor 52 to rotate the motor shaft to one side. supply power. As a result, the rotating body 54 rotates to one side, the transmission portion 55 moves forward (moves from the electric operation device 5 side to the drain plug device 2 side), and the support shaft 24C and the plug lid 25 move upward. To go. After starting power supply to the motor 52 , the control board 57 stops power supply to the motor 52 and stops the operation of the motor 52 when the magnetic sensor detects that the drain port 104 has switched to the open state. As a result, the stopper lid 25 is moved upward sufficiently, and the drain port 104 is switched from the closed state to the open state. Since the plug cover 25 is maintained in an upwardly moved state by the group of reduction gears, the drain port 104 is maintained in a closed state even if power is not supplied to the motor 52 . On the other hand, when the control board 57 detects that the drain port 104 is already open by the magnetic sensor when the open request signal is input, the control board 57 opens the drain port 104 without supplying power to the motor 52 . remain open.

Further, when the control board 57 detects that the drain port 104 is open by the magnetic sensor when the closing request signal is input, the control board 57 causes the motor 52 to rotate the motor shaft to the other side. supply power. As a result, the rotor 54 rotates to the other side and the rack 55A moves back. As the rack 55A moves back, the inner wire 55B moves back and the support shaft 24C and the plug lid 25 move downward due to the biasing force of the return spring 24B. After the start of power supply to the motor 52, the control board 57 stops the power supply to the motor 52 and stops the operation of the motor 52 when the magnetic sensor detects that the drain port 104 has been switched to the closed state. . As a result, the drain port 104 is switched from the open state to the closed state. On the other hand, when the control board 57 detects that the drain port 104 is already closed by the magnetic sensor when the closing request signal is input, the control board 57 closes the drain port 104 without supplying power to the motor 52 . remain closed.

In the above description, when switching the opening/closing state of the drain port 104, power supply to the motor 52 is stopped based on detection by the magnetic sensor. The power supply to the motor 52 may be stopped according to the number of revolutions. Further, in the above, the control board 57 is configured to detect the open/closed state of the drain port 104 by the magnetic sensor when a closing request signal or an opening request signal is input, and to control the operation of the motor 52 based on the detected content. However, the opening/closing state of the drain port 104 detected by the magnetic sensor is stored in advance in a predetermined storage means, and when a closing request signal or an opening request signal is input, the stored information is used. You may make it control the operation|movement of the motor 52. FIG.

In the electric drain plug operation system 1 configured as described above, basically, by performing an input operation on the input device 4, the open/closed state of the drain port 104 can be electrically switched. In addition, in the electric drain plug operating system 1 of the present embodiment, the plug cover 25 and the support shaft 24C are moved upward by the clutch mechanism 58 to move the plug cover 25 and the support shaft 24C upward when the drain port 104 is open. By applying a downward force to 24C so that the load generated between the large diameter portion 541 and the intervening portion 5322 exceeds a predetermined amount, the large diameter portion 541 is caused to idle with respect to the intervening portion 5322, and eventually the plug lid 25 and the support shaft 24C can be moved downward. Therefore, by utilizing this point, it is possible to manually switch the drain port 104 from the open state to the closed state when an abnormality such as a power failure or a failure occurs.

That is, when an abnormality occurs when the plug cover 25 moves upward and the drain port 104 is in an open state, and it becomes impossible to close the drain port 104 by electric operation, the support shaft 24C After the plug lid 25 is removed, a relatively large downward force is applied to the support shaft 24C to cause the large diameter portion 541 to idle with respect to the intermediate portion 5322 and to cause the transmission portion 55 to return. As a result, the support shaft 24C moves downward to the arrangement position when the drain port 104 is closed. The reason why the plug cover 25 is removed from the support shaft 24C in advance is to prevent a situation in which the support shaft 24C does not move downward sufficiently due to the contact of the plug cover 25 with the drain port member 21 or the like. Thereafter, the drain port 104 can be switched from the open state to the closed state by, for example, reattaching the plug lid 25 to the support shaft 24C.

As described in detail above, according to this embodiment, the internal space of the case 51 on the side of the third component 513 communicating with the internal space of the guide tube 61 and the interior of the guide tube 61 communicating with this internal space The space is sealed except for the opening on the other end side of the guide tube 61 . Therefore, the air existing in the sealed space can effectively suppress the movement of the waste water passing through the guide tube 61 toward the inner space side of the case 51 . As a result, it is possible to prevent the drainage from entering the internal space of the case 51 (the internal space on the side of the third component 513 ) through the guide tube 61 .

Further, the internal space of the case 51 on the side of the first component 511 and the internal space on the side of the third component 513 are spatially separated by the seal portion 56 . Therefore, even if the waste water passes through the guide tube 61 and reaches the internal space of the case 51 (the internal space on the side of the third component 513), the water will flow into the internal space of the first component 511 where the motor 52 exists. It is possible to more reliably prevent intrusion into.

Combined with the above effects, according to the present embodiment, it is possible to extremely effectively prevent drainage from reaching the internal space of the first constituent portion 511 through the guide tube 61 . As a result, failure of the motor 52 can be prevented more reliably, and good safety can be obtained.

At least part of the case 51 is positioned below the flange portion 103 . Therefore, the transmission portion 55 (inner wire 55B) extending from the case 51 toward the plug lid 25 can be relatively short. Therefore, handling of the transmission part 55 (inner wire 55B) becomes easy, and workability related to installation of the device can be improved. In addition, the transmission portion 55 (inner wire 55B) makes it possible to smoothly transmit the driving force due to the rotation of the rotating body 54 to the stopper lid 25 side without loss.

Incidentally, when at least a portion of the case 51 is positioned below the flange portion 103, there is a concern that the drainage may easily reach the inner space side of the case 51 through the guide tube 61, but the configuration of the present embodiment Such concerns can be dispelled by adopting

Further, the electric operation device 5 is attached to the wall 111 of the bathroom unit 110 with the first component 511 where the motor 52 is arranged located outside the bathroom unit 110 . Here, since the humidity outside the bathroom unit 110 is usually lower than the humidity inside the bathroom unit 110, compared to the case where the entire first component 511 is installed inside the bathroom unit 110, the motor 52 The adverse effects of moisture can be further suppressed. As a result, failure prevention of the motor 52 and improvement in safety can be achieved more reliably. In addition, the temperature outside the bathroom unit 110 tends to be lower than that inside the bathroom unit 110, and the temperature fluctuates less, so the motor 52 can be operated in a stable environment. Thereby, the operational stability of the motor 52 can be improved.

In addition, since the first component 511 is positioned outside the bathroom unit 110, a current-carrying cable 72 for supplying power to the motor 52 and a signal cable 73 for transmitting/receiving a signal related to operation control of the motor 52 are provided. can be arranged outside the bathroom unit 110, and it is possible to more reliably prevent the electric cable 72 and the signal cable 73 from becoming abnormal due to moisture. Furthermore, since there is no need to seal these cables 72 and 73 to prevent adverse effects due to moisture, it is convenient in terms of the structure of the device and the manufacturing cost. Furthermore, in the present embodiment, since the mating portions of the components that make up the box-shaped housing portion 5111 are arranged outside the bathroom unit 110, there is no need to provide sealing members for ensuring watertightness at the mating portions. This is more advantageous in terms of device manufacturing and manufacturing costs.

In addition, since the electric operating device 5 is in a state where the first constituent portion 511 is positioned outside the bathroom unit 110 and the third constituent portion 513 is positioned inside (inside) the bathroom unit 110, the bathroom unit 110 The amount of protrusion of the electric operation device 5 toward the outside from the wall 111 of the rear can be reduced. As a result, as in this embodiment, even if the gap formed between the wall 111 of the bathroom unit 110 and the wall of the building arranged outside is relatively small, the electric operation device 5 can be attached. It is possible to obtain a good degree of mounting freedom.

Furthermore, since the attachment hole 111A is closed by the case 51, it is possible to suppress the movement of air (moisture) from inside the bathroom unit 110 to the outside of the bathroom unit 110 through the attachment hole 111A. can be more reliably maintained in a low humidity state. Therefore, the adverse effects of moisture on the motor 52 and the like can be suppressed more reliably. In addition, adverse effects of water (humidity) on structures located outside the bathroom unit 110 can be more reliably prevented.

Furthermore, since the electric operation device 5 is attached to the wall 111 of the bathroom unit 110 so as to block the mounting hole 111A, the step of mounting the electric operation device 5 and the step of closing the mounting hole 111A are performed at the same time. be able to. Therefore, workability can be effectively improved.

Furthermore, the seal portion 56 is arranged between the small diameter portion 542 and the second component portion 512 . Therefore, the diameter of the seal portion 56 can be reduced, and the frictional force generated between the seal portion 56 and the second constituent portion 512 and the like can be reduced. As a result, the driving force generated by the rotation of the rotating body 54 can be more smoothly transmitted to the stopper lid 25 side.

In addition, since the seal portion 56 has a small diameter, the space formed by the internal space on the side of the third component portion 513 and the internal space of the guide tube 61 can be more reliably maintained in a sealed state. As a result, it is possible to more reliably prevent the movement of the waste water through the guide tube 61 to the inner space side of the case 51 over a long period of time. can be stably exhibited.

Further, in this embodiment, the clutch mechanism 58 allows the plug cover 25 to be pulled out even if a power failure or a failure of the motor 52 occurs when the drain port 104 is in an open state (that is, when the plug cover 25 is in an upward movement state). Even if the electric operation of the cap 25 becomes impossible, the plug lid 25 can be lowered manually. As a result, the drain port 104 can be manually switched from the open state to the closed state, making it possible to respond to requests such as filling water in the bathtub 100 in the event of a power failure, for example.

Furthermore, since the clutch mechanism 58 allows the large-diameter portion 541 to idle with respect to the intervening portion 5322, when the drain port 104 is manually switched from the open state to the closed state, the transmission portion 55 and the rotation of the transmission portion 55 due to the application of a load are prevented. Damage and deformation of the body 54 and the like can be more reliably prevented. In addition, since the transmission part 55 and the like can be prevented from being damaged, even if the drain port 104 is manually switched from the open state to the closed state, there is no hindrance to normal use after the power is restored.

In addition, when the drain port 104 is open (that is, the plug cover 25 is moved upward), a relatively large downward load is applied to the plug cover 25, such as when the plug cover 25 is stepped on. In this case, the large-diameter portion 541 idles with respect to the intervening portion 5322, thereby preventing damage or deformation of the transmission portion 55, the rotating body 54, and the like.

Further, since the driving force is transmitted from the gear portion 542A of the rotating body 54 to the rack 55A of the transmitting portion 55 meshed with the gear portion 542A, the driving force transmitting mechanism from the rotating body 54 to the transmitting portion 55 can be simplified. In addition, the inner space of the inner space of the case 51 on the side of the third component 513 can be made relatively small. Therefore, the space formed by the internal space on the side of the third component 513 and the internal space of the guide tube 61 can be easily sealed. In addition, the size of the electric operation device 5 (especially the case 51) can be reduced, and the manufacturing cost can be reduced and the workability of installing the device can be improved more effectively.

In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other applications and modifications not exemplified below are naturally possible.

(a) In the above-described embodiment, the guide tube 61 is connected to the third component 513 as a tubular body into which waste water passing through the drain port 104 can flow. On the other hand, as shown in FIG. 9, an outer tube 62 as a tubular body may be connected to the third constituent portion 513 . Furthermore, the one end side portion of the outer tube 62 is watertightly connected to the inner circumference of the third constituent portion 513, and the inner space of the outer tube 62 and the inner space of the third constituent portion 513 communicate with each other. You may In this configuration, for example, the entire inner peripheral surface of the tube fixing component 515 is pressed against the entire outer peripheral surface of the one end portion of the outer tube 62 , and the entire outer peripheral surface of the tube fixing component 515 is attached to the third component 513 . This can be achieved by pressing the entire circumference of the inner peripheral surface. Since the other end opening of the outer tube 62 is arranged inside the pipe 22 (main pipe 221 ), that is, in the drainage channel, the outer tube 62 can receive drainage passing through the drainage port 104 .

The outer tube 62 is watertightly connected to the inner circumference of the third component 513, and the inner space of the outer tube 62 and the inner space of the third component 513 are communicated, and in the same manner as in the above embodiment, By sealing the internal space of the third component 513 except for the end opening thereof with the seal part 56, the interior of the third component 513 that communicates with the internal space of the outer tube 62 in the internal space of the case 51 is closed. The space formed by the space and the inner space of the outer tube 62 can be sealed except for the opening on the other end side of the outer tube 62 (the drain plug device 2 side). As a result, it is possible to suppress movement of the waste water through the outer tube 62 to the inner space side of the case 51 by the air present in the sealed space. More specifically, due to the air present in the sealed space, the water is introduced into the portion of the outer tube 62 that turns upward from the side of the drain plug device 2 toward the side of the case 51 (the side of the case 51). As a result, the movement of the waste water through the outer tube 62 to the inner space side of the case 51 can be suppressed. By being able to suppress the movement of the waste water in this way, it is possible to extremely effectively prevent the waste water from passing through the outer tube 62 and reaching the internal space of the first component part 511, which in turn prevents failure of the motor 52 and improves safety. It is possible to effectively secure the quality.

In the example shown in FIG. 9, a cylindrical bush member 74 made of an elastically deformable material (eg, rubber) is fitted into the through hole 221B provided in the pipe 22 (main pipe 221). The outer tube 62 is configured to extend outside the pipe 22 through the inner circumference of the bush member 74 . The bush member 74 prevents water leakage from between the outer tube 62 and the pipe 22 (especially the portion where the through hole 221B is formed).

(b) The arrangement position of the electric operation device 5 in the above embodiment is merely an example, and the arrangement position of the electric operation device 5 may be changed as appropriate. Therefore, for example, the electric operation device 5 may be installed such that the entire case 51 is positioned outside the bathroom unit 110 . Further, for example, the electric operation device 5 may be attached to a portion of the bathroom unit 110 other than the wall 111 (for example, the ceiling 112).

Furthermore, the electric operation device 5 may be installed above the draft of the bathtub 100 . By installing the electric operation device 5 above the draft surface, it is possible to more reliably prevent water from entering the case 51 . The term "draft surface" refers to the water surface when the bathtub 100 is fully filled with water. When the bathtub 100 is not provided with an overflow port as in the above embodiment, the "draft surface" is basically a horizontal plane at the same height as the flange portion 103, while the bathtub 100 is provided with an overflow port. the "draft plane" is the horizontal plane at the same height as the overflow mouth.

(c) In the above embodiment, when manually switching the drain port 104 from the open state to the closed state in the event of an abnormality such as a power outage, the cap 25 is removed from the support shaft 24C and force is applied to the support shaft 24C. It shows an example to add. On the other hand, the drain port 104 may be manually closed only by applying a downward force to the plug lid 25 without removing the plug lid 25 from the support shaft 24C. This structure adjusts, for example, the shapes of the plug lid body portion 25A and the packing portion 25B, and adjusts the relative positional relationship between the plug lid 25 and members located around the plug lid 25, such as the drain port member 21. For this reason, it can be realized by configuring the support shaft 24C to sufficiently move downward when a downward force is applied to the cap 25 .

According to this configuration, the user can change the state of the drain port 104 from the open state to the closed state simply by taking an action that is naturally conceivable when trying to close the drain port 104, such as pressing the plug cover 25 downward. can be switched intuitively. Moreover, even if the user does not know or forgets that the drain port 104 can be manually switched to the closed state by pressing the cap 25, as described above, it is easy for the user to come up with the idea naturally. The drain port 104 can be manually closed by taking action, which is very convenient for the user.

(d) In the above embodiment, a signal is directly input from the input device 4 to the electric operation device 5. A configuration may be adopted in which a signal is input from the device (for example, a water heater) to the electric operation device 5 when the input device 4 is operated for input.

(e) Although the bathroom unit 110 includes the waterproof pan 113 in the above embodiment, it may not include the waterproof pan. In this case, bathtub 100 constitutes a part of bathroom unit 110 instead of waterproof pan 113 . Further, the guide tube 61 and the outer tube 62 are placed outside the bathroom unit 110, and the electric operation device 5 to which the guide tube 61 and the like are connected is also normally placed outside the bathroom unit 110. At this time, the electric operation device 5 may be attached to a mounting bracket or the like installed on the back side of the bathtub 100 or on the wall 111, for example.

(f) In the above embodiment, the power supply device 3 and the input device 4 are provided separately, but they may be integrated together. Alternatively, the input device 4 and the electric operation device 5 may be integrated.

(g) In the above embodiment, the power supply control to the motor 52 is performed by the control board 57, but the power supply control function to the motor 52 may be provided in another device. For example, such a function may be provided in the power supply device 3 or the like.

(h) In the above embodiment, the drain port 104 is closed by contacting the drain port member 21 with the plug lid 25 (packing portion 25B). The drain port 104 may be closed by contacting the bottom wall portion 101 .

Reference Signs List 5 Electric operating device 25 Plug lid 51 Case 52 Motor (Energizing operation unit) 54 Rotating body 55 Transmission unit 55A Rack 56 Sealing unit 58 Clutch mechanism 61 Guide tube (tubular body) 62 Outer tube (tubular body) 100 Bathtub 103 Flange 104 Drain port 110 Bathroom unit 111 Wall 111A Mounting hole 511 First component , 512... Second component part, 513... Third component part, 541... Large diameter part, 542... Small diameter part, 542A... Gear part, 5322... Interposition part.

Claims (7)

An electric operation device capable of remotely operating a plug cover for opening and closing a drain provided in a bathtub in a bathroom unit to switch the open/closed state of the drain,
an energization operation unit operable by energization;
a rotating body rotatable by the operation of the energizing operation section;
a transmission part capable of reciprocating with the rotation of the rotating body, for transmitting the driving force generated by the rotation of the rotating body to the stopper lid side;
A first constituent part in which the energization operation part is arranged, a second constituent part in which the rotating body is arranged, and a third constituent part in which at least an end of the transmission part is arranged. and a case in which the internal space of the first component, the internal space of the second component, and the internal space of the third component communicate in this order,
One end portion of the tubular body into which waste water passing through the drain port can flow is connected to the third component, and the internal space of the third component and the internal space of the tubular body are communicated. cage,
An annular seal portion disposed between the second component portion and the rotating body is provided, and the inner space of the inner space of the case on the side of the first component portion and the third component portion are separated by the seal portion. The internal space on the side is spatially separated, and further,
Of the internal space of the case, the space formed by the internal space on the side of the third component communicating with the internal space of the tubular body and the internal space of the tubular body is sealed except for the other end side opening of the tubular body. An electric operation device characterized by being set to a state. 2. The electric operating device according to claim 1, wherein at least part of said case is positioned below a flange portion of said bathtub. 3. The electric operating device according to claim 1, wherein the first component is attached to the wall of the bathroom unit while being positioned outside the bathroom unit. The first component is located outside the bathroom unit and the third component is located inside the bathroom unit through the attachment hole formed in the wall of the bathroom unit. 4. The electric operating device according to claim 3, wherein the electric operating device is attached to the wall of the bathroom unit so as to close the wall. The rotating body is
a large-diameter portion positioned on the inner space side of the first component;
a small diameter portion having a smaller diameter than the large diameter portion and located on the inner space side of the third component portion,
The electric operating device according to any one of claims 1 to 4, wherein the seal portion is arranged between the second component portion and the small diameter portion. The large diameter portion has a cylindrical shape,
Inside the large-diameter portion, an intervening portion is inserted that is capable of rotating the rotating body by rotating in accordance with the operation of the current-carrying portion while in contact with the inner surface of the large-diameter portion. ,
6. The apparatus according to claim 5, further comprising a clutch mechanism capable of idling the large-diameter portion with respect to the intervening portion when a load generated between the large-diameter portion and the intervening portion exceeds a predetermined amount. electric operating device. an end portion of the transmission portion is configured by a rack having a plurality of teeth arranged in a reciprocating direction of the transmission portion;
The electric operating device according to any one of claims 1 to 6, wherein the rotating body has a gear portion that meshes with the teeth of the rack.

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