JP6942336B2 - Drainage plug device and plug lid electric unit - Google Patents

Description

The present invention relates to a drain plug device that opens and closes a drain port by electrically driving a plug lid, and a plug lid electric unit for electrically driving the plug lid.

Conventionally, a drain plug device for opening and closing a drain port of a tank body (for example, a bathtub, a wash bowl, etc.) has been known.

The drain plug device includes, for example, a plug lid for opening and closing the drain port, a vertically movable support shaft having a plug lid attached to the upper end portion, and a transmission member (for example, a wire) capable of contacting the lower end portion of the support shaft. Etc.) and an operating device attached to a tank body or the like having a displaceable operating member (for example, an operating button) for operating the plug lid via the transmission member. Then, by displacing the operating member, the transmission member moves along the longitudinal direction thereof, and by extension, the plug lid moves up and down, so that the open / closed state of the drain port is switched.

Further, in recent years, a drain plug device for switching an open / closed state of a drain port by electrically moving the plug lid up and down has been proposed (see, for example, Patent Document 1 and the like). This drain plug device is provided with a state variable mechanism corresponding to the flange of the tank body. The state variable mechanism corresponds to the operating device including the operating member.

The state variable mechanism includes an energization drive mechanism (stepping motor) that can be driven by energization, a rotation shaft that is rotated by the energization drive mechanism, a cam that rotates integrally with the rotation shaft, and a cam that moves up and down with the rotation of the cam. It includes a support cylinder and a transmission member (wire) that reciprocates by moving the support cylinder up and down. Then, the open / closed state of the drain port is switched by turning on or off a predetermined electric operation switch to drive the energization drive mechanism, and by extension, rotating the rotating shaft and the cam.

Japanese Unexamined Patent Publication No. 2000-309966

By the way, in the above drain plug device, the driving force generated by the energization drive mechanism is transmitted to the plug lid via a cam, a support cylinder, a transmission member (wire), and the like. That is, the driving force generated by the energization driving mechanism is transmitted to the plug lid via a relatively long transmission path including a transmission member (wire) or the like. Therefore, since the transmission path is long, when the driving force is transmitted from the energization driving mechanism to the plug lid, the driving force is likely to be lost, and the operation stability of the device may be deteriorated. ..

The present invention has been made in view of the above circumstances, and an object of the present invention is to effectively suppress the transmission loss of the driving force from the energization driving mechanism to the plug lid, and to improve the operational stability of the apparatus. The purpose is to provide a drain plug device or the like that can be used.

Hereinafter, each means suitable for solving the above object will be described in terms of terms. In addition, the action and effect peculiar to the corresponding means will be added as necessary.

Means 1. A pipe having a main body pipe provided corresponding to a drainage port formed on the bottom wall of the tank body, and a pipe
A plug lid that opens and closes the drainage port by moving up and down,
A drain plug device including a plug lid electric unit for electrically driving the plug lid.
The stopper lid electric unit is
A rotating body provided with a rotatable rotating portion and a support portion for moving the plug lid up and down, which can be moved up and down with the rotation of the rotating portion.
An energization drive mechanism that has a drive unit that can be driven by energization and rotates the rotating unit as the drive unit is driven.
At least a case for holding the rotating body and the energizing drive mechanism is provided.
By attaching the case to the pipe, the plug lid electric unit is directly attached to the pipe on the back side of the bottom wall portion .
The plug lid electric unit is a unit in which at least the case, the rotating body having the rotating portion and the supporting portion, and the energizing drive mechanism are integrated, and the case, the rotating body, and the energizing driving mechanism are integrated. A drain plug device characterized in that it can be attached to and detached from the side of the pipe in a grouped state.

According to the above means 1, the plug lid electric unit having an energization drive mechanism or the like is directly attached to the pipe on the back side of the bottom wall portion. Therefore, the plug lid electric unit (particularly the energization drive mechanism) can be provided in the vicinity of the plug lid, and the transmission path of the driving force from the energization drive mechanism to the plug lid can be made extremely short. As a result, when the driving force is transmitted from the energization drive mechanism (driving unit) to the plug lid, the loss of the driving force can be made less likely to occur, and the plug lid can be operated more reliably. As a result, the operational stability of the device can be improved.

Means 2. The plug lid electric unit is configured such that the driving force generated in the driving portion is transmitted to the rotating portion directly or only through a gear arranged in the case. The drain plug device according to the featured means 1.

According to the above means 2, the driving force generated in the driving unit is directly transmitted to the rotating unit or indirectly via only the gear. Therefore, the loss of the driving force can be made less likely to occur as compared with the case where the driving force is transmitted via the wire-shaped transmission member. As a result, the stopper lid can be operated more reliably, and the operational stability of the device can be further improved.

Means 3. In a state where the plug lid electric unit is attached to the pipe, the support portion is arranged in the main body pipe, and the plug lid is indirectly supported by the support portion.
An absorber spring provided in the transmission path of the driving force from the support portion to the plug lid and capable of compression deformation when a downward force is applied to the plug lid at least when the drain port is in the open state. The drain plug device according to means 1 or 2, wherein the drain plug device is provided.

According to the above means 3, the absorber spring is compressed and deformed when a downward force is applied to the plug lid at least when the drain port is in the open state. Therefore, it is possible to prevent an excessive load from being applied to the support portion, the rotating portion, the energization drive mechanism, etc. when a large downward force is applied to the stopper lid, such as when the stopper lid is stepped on. can. As a result, it is possible to more reliably prevent deformation and damage in the support portion, the energization drive mechanism, and the like. In addition, it is possible to more reliably prevent a situation in which a member supported by the support portion (for example, the supported portion of the means 7 described later) comes off from the support portion and falls off, further improving the operational stability of the device. Can be made to.

Means 4. The energization drive mechanism is a motor in which the drive unit rotates when energized.
In a state where the plug lid electric unit is attached to the pipe, the rotation axis of the drive unit is orthogonal to the rotation axis of the rotation unit, or the rotation shaft of the rotation unit is orthogonal to the rotation shaft. When the rotation axis of the drive unit is projected along a direction orthogonal to the surface with respect to a surface parallel to the rotation axis of the drive unit, with respect to the rotation axis of the rotation unit. The drain plug device according to any one of means 1 to 3, wherein the straight lines formed by projecting the rotation axis of the drive unit are orthogonal to each other.

According to the above means 4, the rotation axis of the drive unit is orthogonal to the rotation axis of the rotation unit, or the rotation axis of the drive unit is orthogonal to the rotation axis of the rotation unit on the projection surface. It is configured so that the straight lines projected from are orthogonal to each other. Therefore, the size of the plug lid electric unit along the rotation axis direction of the rotating portion can be suppressed to a smaller size as compared with the configuration in which both rotation shafts extend in parallel, and the plug lid electric unit The cohesiveness can be very good. This facilitates the handling of the plug lid electric unit and makes the plug lid electric unit less likely to get in the way after mounting. Therefore, workability and convenience can be improved. Further, even when the space (installation space) on the back side of the bottom wall portion is relatively small, it is possible to provide the plug lid electric unit, and it is possible to improve the degree of freedom of installation.

Means 5. The stopper lid electric unit is
A displacement member provided in the case and displaceable with the rotation of the rotating portion,
The drain plug device according to any one of means 1 to 4, further comprising an open / closed state detection sensor that detects an open / closed state of the drain port by detecting the position of the displacement member.

According to the means 5, the open / closed state of the drain port is detected by detecting the position of the displacement member provided in the case by the open / closed state detection sensor. Here, since the displacement member is provided in the case, the rotating portion and the displacement member can be arranged in close proximity to each other. Therefore, the rotating portion and the displacement member can be more reliably interlocked, and it is more reliable that the position of the displacement member reflects the state of the rotating portion (that is, the open / closed state of the drain port). It will be possible. Thereby, the open / closed state of the drain port can be detected more accurately based on the position of the displacement member.

Means 6. A pinion having a plurality of teeth is provided on the outer circumference of the rotating portion.
The drain plug device according to means 5, wherein the displacement member is a rack including a plurality of teeth directly meshed with the pinion.

According to the means 6, since the displacement member is directly meshed with the rotating portion, the rotating portion and the displacement member can be more reliably interlocked with each other. As a result, it is possible to more reliably make the position of the displacement member reflect the state of the rotating portion (that is, the open / closed state of the drain port). As a result, the open / closed state of the drainage port can be grasped more accurately based on the position of the displacement member, and the detection accuracy related to the open / closed state of the drainage port can be further improved.

Means 7. It has a supported portion that is directly or indirectly attached to the plug lid, is arranged along the inner peripheral surface of the main body tube, and is supported by the support portion.
Any of means 1 to 6, wherein the support portion is provided at a position that does not reach the central axis of the main body pipe when the plug lid electric unit is attached to the pipe. The drain plug device described in the crab.

According to the means 7, the supported portion arranged along the inner peripheral surface of the main body pipe is supported by the relatively short support portion configured so as not to reach the central axis of the main body pipe. Therefore, it is possible to effectively prevent foreign matter such as dust and hair contained in the drainage from adhering to the support portion. Further, it is possible to relatively easily clean the portion of the pipe located beyond the support portion (below). As a result, cleanability and hygiene can be improved.

Means 8. Instead of the plug lid electric unit, a plug lid manual unit for manually operating the plug lid can be attached to the pipe.
The drainage plug device according to any one of means 1 to 7, wherein the plug lid electric unit and the plug lid manual unit are configured to be mounted on the pipe by a common mounting method. ..

According to the above means 8, either the plug lid electric unit or the plug lid manual unit can be selectively attached to the pipe. On top of that, both units can be attached to the piping by a common attachment method. That is, the mounting method does not change regardless of which unit is mounted. Therefore, the convenience of mounting the unit can be enhanced, and the work such as switching of the unit can be performed very easily.

In addition, regardless of which unit is used, a stopper lid, piping, or the like can be used in common. Therefore, the manufacturing cost can be reduced.

Means 9. The energization drive mechanism is a motor in which the drive unit rotates when energized.
The drain plug device according to any one of means 1 to 8, further comprising a reduction gear portion that transmits the driving force generated in the driving portion to the rotating portion while reducing the rotation speed.

According to the above means 9, it is more reliable that the rotating portion unintentionally rotates due to the influence of an external force other than the driving force generated in the driving portion due to the resistance (friction force or the like) generated in the reduction gear portion. This can be prevented and the rotating portion can be locked at a fixed position. Therefore, when locking the rotating portion, it is not necessary to separately provide a mechanism for locking, and further, no electric power is required for locking. Therefore, the manufacturing cost can be suppressed, and when used, the advantages of extremely energy saving and economy can be generated.

Means 10. The energization drive mechanism is a motor in which the drive unit rotates when energized.
Any of claims 1 to 9, wherein the power transmission mechanism from the drive unit to the rotating unit includes a worm gear that rotates with the rotation of the drive unit and a gear meshed with the worm gear. The drain plug device described in the gear.

According to the means 10, it is possible to more reliably prevent the rotating portion from rotating unintentionally due to the self-locking effect produced by the worm gear and the gear meshed with the worm gear, and the rotating portion is positioned at a fixed position. It is possible to lock with more surely. As a result, the same effect as that of the above means 9 can be obtained.

In terms of further enhancing the locking function of the rotating portion, it is effective to adopt the configuration of the means 9 and the configuration of the means 10 together.

Means 11. Used for a drain plug device equipped with a pipe having a main body pipe provided corresponding to a drain port formed on the bottom wall of the tank body and a plug lid that opens and closes the drain port by moving up and down. It is a plug lid electric unit for electricizing the plug lid.
A rotating body provided with a rotatable rotating portion and a support portion for moving the plug lid up and down, which can be moved up and down with the rotation of the rotating portion.
An energization drive mechanism that has a drive unit that can be driven by energization and rotates the rotating unit as the drive unit is driven.
At least a case for holding the rotating body and the energizing drive mechanism is provided.
By attaching the case to the pipe, it is configured so that it can be directly attached to the pipe on the back side of the bottom wall portion .
It is a unit in which at least the case, the rotating portion, the rotating body having the supporting portion, and the energizing drive mechanism are grouped together, and the case, the rotating body, and the energizing drive mechanism remain as a group. An electric plug lid electric unit characterized in that it can be attached to and detached from the side of the pipe.

According to the means 11, the same action and effect as that of the means 1 can be achieved.

The technical matters described in the above means 1 to 10 may be applied to the above means 11.

It is sectional drawing of the drain plug device when the drain port is opened. It is a partially enlarged perspective view of a pipe. It is a partially enlarged sectional view of the drain plug device when the drain port is closed. It is sectional drawing of the drain plug device at the time when a shock absorber function is exhibited. It is a perspective view of the stopper lid electric unit when the stopper lid electric unit is seen from the front side. It is a perspective view of the stopper lid electric unit when the stopper lid electric unit is seen from the back side. It is a perspective view of the stopper lid electric unit in a state where the 2nd case component part and the 4th case component part are omitted. It is an exploded perspective view of the stopper lid electric unit. It is sectional drawing of the drain plug device which attached the plug lid manual unit instead of the plug lid electric unit. It is a perspective view of the stopper lid manual unit.

Hereinafter, one embodiment will be described with reference to the drawings. As shown in FIG. 1, the drain plug device 1 is attached to a wash bowl 100 as a tank body, and includes a drain port member 2, a pipe 3, a plug lid electric unit 4, and a plug lid unit 5. ing.

The wash ball 100 is provided with a bottom wall portion 101 that constitutes the bottom surface thereof, and the bottom wall portion 101 has a hanging portion 102 that hangs downward and an inward direction from the lower portion of the hanging portion 102. A protruding inner flange portion 103 is provided. The hanging portion 102 has a cylindrical shape in which the inner diameter gradually increases toward the upper side. Further, a drainage port 104 is formed inside the inner flange portion 103. Further, a peripheral wall portion (not shown) is erected on the outer periphery of the bottom wall portion 101, and an overflow port (not shown) for preventing the overflow of water is formed through the peripheral wall portion.

The drainage port member 2 is formed in a cylindrical shape, and is inserted into the drainage port 104 in a state where its own central axis and the central axis of the drainage port 104 are substantially aligned with each other. The drainage port member 2 includes a flange portion 21 formed so as to protrude outward in the radial direction at the upper end portion thereof, and a male screw portion 22 formed on the outer periphery below the collar portion 21.

The pipe 3 includes a cylindrical main body pipe 31 extending along the vertical direction, and a cylindrical mounting pipe 32 and a connecting pipe 33 extending from the main body pipe 31 in a branched state, respectively.

The main body pipe 31 is provided corresponding to the drainage port 104, and is a portion that constitutes a flow path for drainage that flows through the drainage port 104 and the like. The main body tube 31 is provided with a female threaded portion 31A capable of screwing the male threaded portion 22 on the inner circumference of one end (upper end) thereof. Then, with the collar portion 21 arranged on the inner collar portion 103, the male screw portion 22 is screwed into the female screw portion 31A, and the inner collar portion 103 is sandwiched between the collar portion 21 and the upper end surface of the pipe 3 to sandwich the drainage port. The member 2 and the pipe 3 are connected, and both are attached to the wash bowl 100.

Further, in the present embodiment, elastic deformation occurs between the wash bowl 100 (inner collar 103) and the drainage port member 2 (flame 21), and between the upper end surface of the pipe 3 and the wash ball 100, respectively. An annular sealing members 6 and 7 formed of a possible material (eg, resin, rubber, etc.) are interposed. These seal members 6 and 7 prevent water leakage from between the drain port member 2 and the pipe 3 and the wash bowl 100.

The mounting pipe 32 is a portion to which the plug lid electric unit 4 is mounted. As shown in FIG. 2, the mounting tube 32 has a cylindrical insertion portion 32A formed so as to project horizontally from the outer periphery of the main body tube 31 and its own internal space communicates with the internal space of the main body tube 31, and the covering. It is provided with a flange portion 32B to be attached, which is formed so as to project outward from the end portion of the insertion portion 32A.

The mounted flange portion 32B is formed with a locked hole portion 32C penetrating in the plate thickness direction thereof. The locked hole 32C has a curved shape extending along the circumferential direction of the flange 32B to be mounted, and a plurality (three in the present embodiment) are provided at intervals along the circumferential direction. ing. One side of each locked hole 32C along the circumferential direction has a size (width) through which the tip of the locking portion 431C described later (the portion where the claw portion 431D described later exists) can pass. ing. On the other hand, on the other side of each locked hole 32C along the circumferential direction, the tip of the locking portion 431C cannot pass through, while the base end of the locking portion 431C can pass through. It is the size (width).

Further, on the end surface of the collar portion 32B to be mounted on the side opposite to the main body tube 31, a recessed portion 32D for rotation regulation and a recessed portion 32E for mounting are formed in a recessed shape, respectively. An asymmetric wall portion 32F is provided between the recesses 32D and 32E. The asymmetric wall portion 32F is an inclined surface whose surface located on the side of the recess 32E for mounting is inclined with respect to the circumferential direction of the flange portion 32B to be mounted, while the surface located on the side of the recess 32D for rotation regulation is the circumferential direction. It is a right-angled surface that is almost perpendicular to the surface.

Returning to FIG. 1, the connecting pipe 33 is a portion to which a connecting pipe (not shown) for flowing the drainage flowing into the overflow port is connected. The connecting pipe 33 is formed so as to project obliquely upward from the outer circumference of the main body pipe 31, and its own internal space communicates with the internal space of the main body pipe 31. Then, the drainage that has flowed into the overflow port is guided into the main body pipe 31 through the connecting pipe and the connecting pipe 33.

The plug lid electric unit 4 is a mechanism for electrically moving the plug lid unit 5 up and down. The plug lid electric unit 4 includes a rotating body 41 including a rotatable rotating portion 411 and a supporting portion 412 that can move up and down with the rotation of the rotating portion 411. The stopper lid electric unit 4 is attached to the attachment pipe 32 with the support portion 412 arranged in the main body pipe 31. The support portion 412 is relatively short, and is configured so that its tip does not reach the central axis of the pipe 3 (main body pipe 31). Details of the plug lid electric unit 4 will be described later.

The stopper lid unit 5 is provided corresponding to the drainage flow path in order to open and close the drainage port 104 and the like. The plug lid unit 5 has a support member 51, a support shaft 52, an absorber spring 53, a hair catcher 54, and a plug lid 55.

The support member 51 is arranged in the main body pipe 31 so as to be vertically movable along the inner peripheral surface of the main body pipe 31. The support member 51 includes a tubular portion 511 arranged on the central axis side of the main body tube 31, and a supported portion 512 provided on the outside of the tubular portion 511.

The tubular portion 511 is a portion that supports the support shaft 52 inserted into its inner circumference via the absorber spring 53.

The supported portion 512 is a portion supported by the support portion 412, and includes an annular portion arranged in a state close to the inner peripheral surface of the main body tube 31 and an arm portion connecting the cylindrical portion 511 and the annular portion. It has. The supported portion 512 is supported by the support portion 412 by placing the lower surface of the annular portion on the support portion 412. A plurality of the arm portions are provided at intervals along the circumferential direction of the tubular portion 511, and drainage flows through a gap between the adjacent arm portions.

The support shaft 52 has a rod shape, and its upper end is fitted to the cylindrical attached cylinder portion 55C provided in the center portion of the back surface of the stopper lid 55, so that the support shaft 52 is attached to the stopper lid 55. It supports the stopper lid 55. In the present embodiment, the C ring 8 is provided in the groove-shaped portion on the outer periphery of the upper end side of the support shaft 52, and the C ring 8 is arranged in the recessed portion provided on the inner circumference of the attached cylinder portion 55C. As a result, the plug lid 55 is attached to the support shaft 52.

The absorber spring 53 is formed by spirally winding a predetermined metal wire, and is provided between the inner peripheral surface of the tubular portion 511 and the outer peripheral surface of the support shaft 52. The absorber spring 53 is sandwiched by the support shaft 52 and the cylindrical portion 511 along the axial direction of the support shaft 52, and is provided in the transmission path of the driving force from the support portion 412 to the plug 55. .. Further, the absorber spring 53 is elastically deformable along the axial direction of the support shaft 52.

The hair catcher 54 is arranged inside the hanging portion 102 and is for collecting foreign matter such as dust and hair contained in the drainage. The hair catcher 54 is supported by the hanging portion 102 by placing its outer edge portion on the tapered portion of the hanging portion 102. Further, a cylindrical portion is provided at the center of the hair catcher 54, and the support shaft 52 is inserted into the tubular portion in a state in which the support shaft 52 can move relative to the tubular portion. Therefore, the arrangement position of the hair catcher 54 does not change even when the support shaft 52 moves up and down.

The plug 55 is for opening and closing the drain port 104, and is indirectly supported by the support portion 412 via the support member 51 and the support shaft 52. The stopper lid 55 includes a disk-shaped stopper lid main body 55A made of resin or the like, and a packing portion 55B attached to the stopper lid main body 55A. The packing portion 55B is formed in an annular shape by an elastically deformable material (for example, rubber, resin, etc.), and is fitted into a recess opened to the outside provided on the outer peripheral side of the back surface of the stopper lid main body portion 55A. It is said that it is in a state of being.

In the present embodiment, the rotating portion 411 rotates to one side and the support portion 412 moves downward, so that the support shaft 52 and the plug lid 55 move downward. Then, the entire outer peripheral portion of the packing portion 55B comes into contact with a predetermined portion to be sealed on the bottom wall portion 101 (hanging portion 102), so that the drain port 104 is closed (see FIG. 3). On the other hand, when the rotating portion 411 rotates to the other side and the supporting portion 412 moves upward, the supported portion 512 of the supporting member 51 is lifted by the supporting portion 412, and the support shaft 52 and the plug lid 55 are lifted. Move up. As a result, the packing portion 55B is separated from the bottom wall portion 101, so that the drain port 104 is opened (see FIG. 1).

In the present embodiment, when the drain port 104 is closed and the support portion 412 is arranged at the lowest position, the support member 51 (the annular portion of the supported portion 512) floats from the support portion 412. It becomes. Therefore, when the drain port 104 is closed, the packing portion 55B can be more reliably brought into contact with the bottom wall portion 101, and good watertightness can be obtained.

Further, when the drain port 104 is in the open state, the absorber spring 53 is compressed and deformed when a downward force is applied to the plug lid 55, for example, when a heavy object is placed on the plug lid 55. (See FIG. 4). As a result, the function of absorbing the load on various parts such as the support shaft 52 and the support portion 412, that is, the shock absorber function is exhibited, and it is possible to more reliably prevent the various parts from being damaged or deformed. ..

Further, in the present embodiment, the plug lid unit 5 is composed of a hanging portion 102, a drain port member 2, and a main body pipe 31 by pulling up the plug lid 55 and the support shaft 52 upward from the front side of the wash bowl 100. It can be pulled out from the tubular portion, that is, the tubular portion that constitutes the drainage flow path. Then, in the state where the plug lid unit 5 is pulled out, only the support portion 412 is slightly projected inside the cylindrical portion constituting the drainage flow path. Therefore, it is possible to improve maintainability and cleanability.

Next, the plug lid electric unit 4 will be described. As shown in FIGS. 5 to 8, in the stopper lid electric unit 4, in addition to the rotating body 41 described above, the outer peripheral arrangement component group 42, the case 43, the receiving member 44, the reduction gear group 45 as the reduction gear portion, and the displacement member 46 It is provided with a motor 47 as an energization drive mechanism, and a first magnetic sensor 48A and a second magnetic sensor 48B corresponding to open / closed state detection sensors, respectively.

As described above, the rotating body 41 includes a rotating portion 411 and a supporting portion 412. The rotating portion 411 includes a flow path side disk portion 411A, an intermediate portion 411B, and a pinion 411C, which are arranged coaxially in this order.

The flow path side disk portion 411A is provided at one end of the rotating portion 411, and in a state where the plug lid electric unit 4 is attached to the mounting pipe 32, the internal space side of the main body pipe 31, that is, the drainage flow path side. It is a part that is placed so that it faces. The flow path side disk portion 411A has a disk shape, and its maximum outer diameter is set to be slightly smaller than the inner diameter of the insertion portion 32A.

The intermediate portion 411B has a columnar shape having a smaller diameter than the flow path side disk portion 411A. An annular inner packing 411D formed of a predetermined elastically deformable material (for example, rubber, resin, etc.) is fitted on the outer periphery of the base portion of the intermediate portion 411B located on the flow path side disk portion 411A side. On the other hand, a plurality of dents are formed on the outer circumference of the intermediate portion 411B on the pinion 411C side of the inner packing 411D. With this recess, it is possible to reduce the frictional resistance generated between the intermediate portion 411B and the outer peripheral arrangement component group 42 (particularly the intervening cylindrical portion 421 described later) arranged on the outer periphery thereof, and by extension, the rotating portion 411 is smooth. It is possible to rotate.

Further, inside the intermediate portion 411B, a recessed receiving portion (not shown) in which one end portion of the second shaft portion 492, which will be described later, is arranged is provided. The receiving portion may be provided inside the pinion 411C or the like.

The pinion 411C is a portion that receives a driving force or the like from the motor 47 transmitted via the reduction gear group 45. The pinion 411C is provided at the other end of the rotating portion 411, and is composed of a plurality of teeth provided on the outer periphery of the rotating portion 411. The outer diameter of the pinion 411C is substantially the same as the outer diameter of the intermediate portion 411B.

As described above, the support portion 412 is arranged in the internal space of the pipe 3 (main body pipe 31) in a state where the plug lid electric unit 4 is attached to the mounting pipe 32. The support portion 412 protrudes from the outer peripheral side of one end surface (the surface located on the drainage flow path side) of the flow path side disk portion 411A, and moves up and down with the rotation of the rotating portion 411.

The outer peripheral arrangement component group 42 is composed of a plurality of components arranged on the outer periphery of the intermediate portion 411B, and includes an intervening cylindrical portion 421, an outer packing 422, and a C ring 423.

The intervening cylindrical portion 421 has a cylindrical shape with an annular groove on the outer periphery thereof, and is arranged on the outer periphery of the intermediate portion 411B. The intervening cylindrical portion 421 is in a state of being interposed between the intermediate portion 411B and the inserted portion 32A in a state where the plug lid electric unit 4 is attached to the attachment pipe 32. Further, the inner packing 411D is sandwiched between the outer peripheral surface of the intervening cylindrical portion 421 and the inner peripheral surface of the intermediate portion 411B, and water into the case 43 passing between the intermediate portion 411B and the intervening cylindrical portion 421. Invasion is suppressed.

The outer packing 422 is an annular member formed of a predetermined elastically deformable material (for example, rubber, resin, etc.), and is arranged in the groove formed on the outer periphery of the intervening cylindrical portion 421. The outer packing 422 is sandwiched between the outer peripheral surface of the intervening cylindrical portion 421 and the inner peripheral surface of the inserted portion 32A in a state where the plug lid electric unit 4 is attached to the mounting pipe 32. As a result, the infiltration of water into the case 43 that has passed between the inserted portion 32A and the intervening cylindrical portion 421 is suppressed.

The intervening cylindrical portion 421 does not actively rotate relative to the inserted portion 32A in a state where the plug lid electric unit 4 is attached to the mounting pipe 32, and is basically formed by the outer packing 422. It will be in a fixed state. Here, if the intermediate portion 411B has a large diameter and is configured so that frictional resistance is generated between the intermediate portion 411B and the inserted portion 32A when the rotating body 41 rotates, the intermediate portion 411B rotates. The larger the radius, the larger the frictional resistance generated. On the other hand, in the present embodiment, when the rotating body 41 rotates, the intermediate portion 411B rotates on the inner circumference of the intervening cylindrical portion 421, so that the friction generated due to the small turning radius of the intermediate portion 411B occurs. The resistance can be small. That is, the intervening cylindrical portion 421 is provided to reduce the frictional resistance when the rotating body 41 is rotated. Further, the outer packing 422 functions not only in ensuring watertightness but also in restricting the relative rotation of the intervening cylindrical portion 421 with respect to the inserted portion 32A.

The C-ring 423 is a thin-walled plate-shaped member having an annular shape in which a part is interrupted. The C ring 423 is fitted in a groove provided on the pinion 411C side in the intermediate portion 411B with the intervening cylinder portion 421 sandwiched between the flow path side disk portion 411A and the intervening cylinder from the intermediate portion 411B. Prevents the part 421 from falling off. Further, the outer peripheral portion of the C ring 423 is in a state of protruding from the outer circumference of the intervening cylindrical portion 421, and is in a state of being caught in the case 43 in the case 43 (see FIG. 1 and the like). As a result, the rotating body 41 and the intervening cylindrical portion 421 are prevented from falling off from the case 43 while projecting the flow path side disk portion 411A, the intervening cylindrical portion 421, and the like from the case 43.

The case 43 holds the rotating body 41, the reduction gear group 45, the motor 47, and the like, and functions as a mounting portion when the plug lid electric unit 4 is mounted on the mounting pipe 32. The case 43 is formed by assembling the first case component 431, the second case component 432, the third case component 433, and the fourth case component 434. In FIG. 7, the second case component 432 and the fourth case component 434 are not shown.

The first case component 431 is a portion that functions as a mounting portion to the mounting pipe 32 while holding the rotating body 41, the displacement member 46, and the like. The first case component 431 includes a first base 431A and a first accommodating wall 431B.

The first base portion 431A is a flat plate-shaped portion including a disc-shaped portion and a protruding portion protruding along a tangential direction with respect to the circumferential direction of the disc-shaped portion. The first accommodating wall portion 431B is composed of a plurality of walls in the shape of a flat plate or a curved plate erected with respect to the first base portion 431A. The space in the first case constituent portion 431 partitioned by the first base portion 431A and the first accommodating wall portion 431B constitutes an accommodating space for the C ring 423, the pinion 411C, the displacement member 46, and the like.

Further, the protruding portion of the first base portion 431A and the first accommodating wall portion 431B provided corresponding to the protruding portion form a brim shape provided at the tip of a cylindrical tube member (not shown). A tube connecting portion 431G for accommodating the flared portion of the above is formed. The tube connection portion 431G is used when the case 43 is used as a component of a unit for manually operating the plug lid 55. In the present embodiment, the tube member is housed in the tube connection portion 431G. Not. Therefore, it is not always necessary to provide the tube connection portion 431G.

Further, a through hole having an inner diameter substantially the same as the outer diameter of the intervening cylindrical portion 421 is formed in the central portion of the disk-shaped portion of the first base portion 431A. Then, the intervening cylindrical portion 421, the outer packing 422, the flow path side disk portion 411A, and the support portion 412 are in a state of projecting to the outside of the case 43 through the through hole. An annular step portion is provided at a portion of the first base portion 431A where the through hole is formed, and the C ring 423 is locked to the step portion.

In addition, a locking portion 431C is formed so as to protrude from the surface of the first base portion 431A located on the side opposite to the first accommodating wall portion 431B. The locking portions 431C are portions used for mounting the plug lid electric unit 4 to the mounting pipe 32, and a plurality of locking portions 431C are equidistantly spaced along the circumferential direction of the disk-shaped portion of the first base portion 431A (3 in the present embodiment). One) It is provided. Further, the tip of each locking portion 431C is provided with a claw portion 431D that projects outward (on the side opposite to the rotation axis of the rotating body 41).

Further, the disc-shaped portion of the first base portion 431A is formed with a notch portion 431E having an L-shape and opening to the outer periphery of the disc-shaped portion. Due to the presence of the notch 431E, a part of the disc-shaped portion of the first base 431A can be elastically deformed along the projecting direction of the locking portion 431C with respect to the first base 431A. A rotation-regulating convex portion 431F that protrudes in the same direction as the protruding direction of the locking portion 431C with respect to the first base portion 431A is provided corresponding to the elastically deformable portion. The rotation regulating convex portion 431F is arranged in the rotation regulating concave portion 32D to regulate the relative rotation of the plug lid electric unit 4 with respect to the mounting pipe 32.

The second case component 432 is attached to the first case component 431 to form a storage space for the receiving member 44, the reduction gear group 45, the displacement member 46, etc. inside both the case components 431 and 432. At the same time, it constitutes a storage space for the motor 47 and the sensors 48A and 48B. The second case component 432 includes a second base portion 432A, a second accommodating wall portion 432B, a gear accommodating wall portion 432C, a motor accommodating wall portion 432D, and a sensor accommodating wall portion 432E.

The second base portion 432A has a shape corresponding to the first base portion 431A, and the second accommodating wall portion 432B is composed of a wall having a shape protruding from the second base portion 432A and corresponding to the first accommodating wall portion 431B. There is.

The gear accommodating wall portion 432C forms a space for accommodating the reduction gear group 45. The gear accommodating wall portion 432C has a shape that protrudes from the second base portion 432A in appearance and is integrated with two closed cylindrical portions at the tip portion in a parallel state. Inside the gear accommodating wall portion 432C, two columnar spaces are provided in a state of being communicated with each other so that the gears 451 to 454 described later can be meshed with each other. One columnar space is provided corresponding to the first gear 451 and the third gear 453, which will be described later, respectively, and the other columnar space corresponds to the second gear 452 and the fourth gear 454, which will be described later, respectively. It is provided.

Further, in the gear accommodating wall portion 432C, the other end portion of the first shaft portion 491, which will be described later, is arranged on the back side (accommodation space side of the reduction gear group 45 or the like) of the closed portion on the tip end side of one of the cylindrical portions. It has a recessed receiving part (not shown). Further, the gear accommodating wall portion 432C has a recessed receiving portion (not shown) in which the other end portion of the second shaft portion 492, which will be described later, is arranged on the back side of the closed portion on the distal end side in the other cylindrical portion. I have.

In the present embodiment, the first case component 431 and the second case component 432 have both bases 431A and 432B facing each other and the first case component 432 using snap fit (a method using elastic deformation of the material). It is assembled in a state where the second accommodating wall portion 432B is fitted inside the first accommodating wall portion 431B. By assembling both case components 431 and 432, the C ring 423, the receiving member 44, the reduction gear group 45, the displacement member 46, and the like are held in a stable state in both case components 431 and 432.

The motor accommodating wall portion 432D forms a space for accommodating the motor 47. The motor accommodating wall portion 432D is provided so as to be connected to one cylindrical portion of the gear accommodating wall portion 432C. The space for accommodating the motor 47 provided in the motor accommodating wall portion 432D is in a state of communicating with the internal space of the gear accommodating wall portion 432C so that the first gear 451 and the worm gear 47B, which will be described later, can be meshed with each other. It has become.

The sensor accommodating wall portion 432E is for accommodating the first magnetic sensor 48A and the second magnetic sensor 48B. The sensor accommodating wall portion 432E is provided at a position where the second accommodating wall portion 432B is sandwiched between the sensor accommodating wall portion 432E and the accommodating space of the displacement member 46. The accommodation space of the sensors 48A and 48B formed by the sensor accommodation wall portion 432E extends along the reciprocating movement direction of the displacement member 46, which will be described later.

The third case component 433 is attached to the second case component 432 and is for covering the accommodation space of the first magnetic sensor 48A and the second magnetic sensor 48B formed by the sensor accommodating wall portion 432E. be. The third case component 433 is attached to the second case component 432 (sensor accommodating wall 432E) by utilizing a snap fit.

The fourth case component 434 is attached to the second case component 432 to hold the motor 47 while covering the storage space of the motor 47 formed by the motor housing wall 432D. be. The fourth case component 434 is attached to the second case component 432 (motor accommodating wall 432D) by utilizing the snap fit.

In the present embodiment, the first magnetic sensor 48A and the first magnetic sensor 48A and the first magnetic sensor 48A are obtained by removing only the third case component 433 while maintaining the state in which the plug lid electric unit 4 is attached to the pipe 3 (mounting pipe 32). (Ii) It is possible to replace the magnetic sensor 48B. Further, the motor 47 can be replaced by removing only the fourth case component 434 while maintaining the state in which the plug lid electric unit 4 is attached to the pipe 3 (mounting pipe 32). Therefore, maintenance of the sensors 48A and 48B and the motor 47 can be easily performed.

The receiving member 44 is a portion for receiving and supporting one end of the first shaft portion 491, which will be described later. The receiving member 44 has a semicircular plate shape with a semicircular hole formed in the center, and includes a recessed receiving portion 44A in which one end of the first shaft portion 491 is arranged. The receiving member 44 is sandwiched between the two case components 431 and 432 as the first case component 431 and the second case component 432 are assembled, so that the receiving member 44 is sandwiched between the two case components 431 and 432 in the accommodation space composed of the two case components 431 and 432. It is held in an immovable state.

The reduction gear group 45 transmits the driving force generated by the driving unit 47A, which will be described later, to the rotating unit 411 while reducing the number of rotations. In the present embodiment, the reduction gear group 45 is composed of two-stage gears (two gears having different numbers of teeth arranged so as to be arranged along the rotation axis direction of the gears), respectively, as gears. The first gear 451 and the second gear 452, the third gear 453, and the fourth gear 454 are provided.

The first gear 451 and the third gear 453 are arranged coaxially, and are supported by a rod-shaped first shaft portion 491 in a state in which they can freely rotate. The first shaft portion 491 is supported by a receiving portion 44A provided on the receiving member 44 and the receiving portion provided on one cylindrical portion of the gear accommodating wall portion 432C.

The second gear 452 and the fourth gear 454 are arranged coaxially, and are supported by a rod-shaped second shaft portion 492 (see FIG. 7, not shown in FIG. 8) in a freely rotatable state. The second shaft portion 492 is supported by the receiving portion provided inside the intermediate portion 411B and the receiving portion provided at the other cylindrical portion of the gear accommodating wall portion 432C.

The large side gear of the first gear 451 is meshed with the worm gear 47B described later, and the small side gear is meshed with the large side gear of the second gear 452. In the second gear 452, the third gear 453, and the fourth gear 454, each gear is meshed so that the driving force is transmitted in this order, but the driving force is from the smaller gear to the larger gear. It is designed to be transmitted to the gears. For example, the driving force is transmitted from the small side gear of the second gear 452 to the large side gear of the third gear 453 meshed with this gear. The small side gear of the fourth gear 454 is fitted to the inner circumference of the portion where the pinion 411C is formed in the rotating portion 411, and the rotating portion 411 moves with the rotation of the fourth gear 454. It is designed to rotate. That is, in the present embodiment, the driving force generated by the driving unit 47A, which will be described later, is transmitted to the rotating unit 411 only through the gears 451 to 454.

The displacement member 46 is a member configured so that its arrangement position changes according to the angle of the rotating portion 411. The displacement member 46 is arranged in a state in which it can be displaced (reciprocally movable) along the vertical direction in the accommodation space provided in the first case component 431 and the second case component 432. A plurality of teeth 46A are provided on the side surface of the displacement member 46 in a state of being arranged in parallel along the moving direction of the displacement member 46. Then, these teeth 46A are in a state of being directly meshed with the pinion 411C. That is, the displacement member 46 is a rack including a plurality of teeth 46A that are directly meshed with the pinion 411C. Then, the displacement member 46 is displaced by the rotation of the rotating portion 411.

In addition, a columnar magnet 46B is attached to the displacement member 46. The position of the magnet 46B changes according to the displacement of the displacement member 46.

The motor 47 is a drive source for electrically opening and closing the drain port 104. The motor 47 includes a rotatable rod-shaped drive unit 47A (see FIG. 8), and is electrically connected to a predetermined power source and a predetermined control means (for example, a microcomputer or the like) (not shown), respectively. The motor 47 is capable of rotating the drive unit 47A in both directions by supplying power from the power source.

A worm gear 47B is fixed to the drive unit 47A, and as described above, the worm gear 47B is meshed with the larger gear of the first gear 451. That is, the power transmission mechanism from the drive unit 47A to the rotation unit 411 includes a worm gear 47B that rotates with the rotation of the drive unit 47A, and a first gear 451 meshed with the worm gear 47B.

Further, in the present embodiment, the rotation axis of the drive unit 47A is projected on a surface including the rotation axis of the rotation unit 411 and parallel to the rotation axis of the drive unit 47A in a direction orthogonal to the surface. When this is done, the surface is configured so that a straight line formed by projecting the rotation axis of the drive unit 47A is orthogonal to the rotation axis of the rotation unit 411.

The first magnetic sensor 48A and the second magnetic sensor 48B are sensors for detecting the magnetism generated by the magnet 46B, respectively, and have, for example, a Hall element or the like. The first magnetic sensor 48A and the second magnetic sensor 48B are fixed to the sensor accommodating wall portion 432E in a state of being separated along the reciprocating movement direction of the displacement member 46. Both sensors 48A and 48B are connected to the control means, respectively, and detect the position of the displacement member 46 and the open / closed state of the drain port 104 by detecting the magnetism generated by the magnet 46B.

In the present embodiment, when the drain port 104 is in the open state, the magnetism of the magnet 46B is detected by the first magnetic sensor 48A, and a predetermined magnetic detection signal is output from the first magnetic sensor 48A to the control means. .. On the other hand, when the drain port 104 is in the closed state, the magnetism of the magnet 46B is detected by the second magnetic sensor 48B, and the magnetic detection signal is output from the second magnetic sensor 48B to the control means.

The control means is electrically connected to a predetermined operation panel (not shown) provided with a display means (for example, a liquid crystal screen or the like) and an input means (for example, a button) (not shown). When the magnetic detection signal is input from the first magnetic sensor 48A, the control means causes the display means to display information indicating that the drain port 104 is in the open state. On the other hand, when the magnetic detection signal is input from the second magnetic sensor 48B, the control means causes the display means to display information indicating that the drain port 104 is in the closed state.

Further, when the control means inputs information to the input means to close the drain port 104, whether or not the drain port 104 is in the open state based on the outputs from the sensors 48A and 48B. Check if. Then, when the drain port 104 is in the open state, the control means causes the motor 47 to supply electric power for rotating the drive unit 47A to one side from the power source. Then, when the control means grasps that the magnetic detection signal is input from the second magnetic sensor 48B and the drain port 104 is switched to the closed state after the power supply to the motor 47 is started, the power supply from the power supply to the motor 47 is supplied. To stop the operation of the motor 47. On the other hand, when the information to the effect that the drainage port 104 is closed is input to the input means, the control means supplies electric power from the power source to the motor 47 when the drainage port 104 is in the closed state. I won't let you.

Further, when the control means inputs information to the input means to open the drain port 104, whether the drain port 104 is in the closed state based on the outputs from both sensors 48A and 48B. Check if it is not. Then, when the drain port 104 is in the closed state, the control means causes the motor 47 to supply electric power for rotating the drive unit 47A to the other side from the power source. Then, when the control means grasps that the magnetic detection signal is input from the first magnetic sensor 48A and the drain port 104 is switched to the open state after the power supply to the motor 47 is started, the power supply from the power supply to the motor 47 is supplied. To stop the operation of the motor 47. On the other hand, when the information to the effect that the drainage port 104 is opened is input to the input means, the control means supplies electric power from the power source to the motor 47 when the drainage port 104 is in the open state. I won't let you.

In the drain plug device 1 configured as described above, when the drain port 104 is in the open state and information to the effect that the drain port 104 is closed is input to the input means, the control means Power is supplied from the power source to the motor 47, and the drive unit 47A rotates to one side. As a result, the driving force of the driving unit 47A is transmitted to the rotating unit 411 via the gears 451 to 454. Then, as the rotating portion 411 rotates to one side, the support portion 412 moves downward, and as a result, the plug lid 55 moves downward by electric power, and the drain port 104 is closed. Further, when the displacement member 46 moves, a magnetic detection signal is output from the second magnetic sensor 48B, and the control means grasps that the drain port 104 is in the closed state. Then, the control means stops the power supply from the power source to the motor 47.

On the other hand, when the drainage port 104 is in the closed state and information indicating that the drainage port 104 is to be opened is input to the input means, the power supply supplies power to the motor 47 by the control means. , The drive unit 47A rotates to the other side. As a result, the driving force of the driving unit 47A is transmitted to the rotating unit 411 via the gears 451 to 454. Then, as the rotating portion 411 rotates to the other side, the support portion 412 moves upward, and as a result, the plug lid 55 moves upward by electric power, and the drain port 104 is opened. Further, when the displacement member 46 moves, a magnetic detection signal is output from the first magnetic sensor 48A, and the control means grasps that the drain port 104 is in the open state. Then, the control means stops the power supply from the power source to the motor 47.

Further, in the plug lid electric unit 4 configured as described above, the case 43 is attached to the attachment pipe 32, so that the pipe is piped on the back side of the bottom wall portion 101 (the side opposite to the water storage space in the wash bowl 100). It can be directly attached to 3. The plug lid electric unit 4 can be attached to the pipe 3 as follows.

That is, while inserting the flow path side disk portion 411A, the intervening cylindrical portion 421, etc., which are in a protruding state from the case 43, into the inserted portion 32A, the holes in the locked hole portions 32C are relatively large (engaged). The locking portion 431C is inserted into the stop portion 431C where the existing portion of the claw portion 431D can pass through). Further, the annular portion located around the intervening cylindrical portion 421 in the first base portion 431A is pressed toward the attached collar portion 32B.

At this time, if the mounting direction of the mounting pipe 32 of the plug lid electric unit 4 with respect to the pipe 3 is correct, the rotation regulating convex portion 431F is accommodated in the mounting concave portion 32E, and the above-mentioned The annular portion and the attached flange portion 32B come into surface contact with each other. In the state of surface contact, the claw portion 431D is in a state of passing through the locked hole portion 32C.

On the other hand, if the mounting direction of the plug lid electric unit 4 with respect to the pipe 3 is incorrect, the annular portion and the attached collar portion 32B do not come into surface contact due to the presence of the rotation restricting portion 431F, and the claw portion 431D is engaged. It stays in the stop hole 32C. In this state, the plug lid electric unit 4 (case 43) cannot be rotated relative to the insertion portion 32A, so that the mounting operator can grasp that the mounting direction is incorrect.

By the way, after the mounting direction of the plug lid electric unit 4 with respect to the pipe 3 is correct and the annular portion and the mounted collar portion 32B are in surface contact with each other, the plug lid electric unit 4 (case) is attached to the inserted portion 32A. By rotating 43) relative to each other, the hole in each locked hole 32C is relatively small (the tip of the locking portion 431C cannot pass through, while the base end of the locking portion 431C passes through. The locking portion 431C is moved to a possiblely configured location). At this time, when the rotation-regulating convex portion 431F comes into contact with the inclined surface of the asymmetric wall portion 32F, the portion of the first base portion 431A where the rotation-regulating convex portion 431F is formed is easily elastically deformed. Then, when the relative rotation of the case 43 progresses and the rotation-regulating convex portion 431F reaches the rotation-regulating recess 32D and the elastic deformation of the first base portion 431A is released, the rotation-regulating concave portion 32D is used for rotation regulation. The convex portion 431F is arranged, and the claw portion 431D is locked to the portion of the attached collar portion 32B that forms the locked hole portion 32C. As a result, the stopper lid electric unit 4 is attached to the pipe 3 (attachment pipe 32) in a state where the relative rotation of the stopper lid electric unit 4 with respect to the attachment pipe 32 is restricted.

In the present embodiment, as described above, since the surface of the asymmetric wall portion 32F located on the rotation regulating recess 32D side is a right-angled surface, the relative rotation of the plug lid electric unit 4 with respect to the mounting pipe 32 is effectively regulated. This makes it possible to more reliably prevent the plug lid electric unit 4 from being unintentionally detached. The plug lid electric unit 4 can be removed from the pipe 3 (mounting pipe 32) in the reverse procedure of the above method.

Further, as shown in FIG. 9, the drain plug device 1 can attach the plug lid manual unit 9 to the pipe 3 instead of the plug lid electric unit 4. The stopper lid manual unit 9 is a device used when the stopper lid 55 is operated exclusively manually. Note that FIG. 9 schematically shows only a part of the plug lid manual unit 9.

As shown in FIG. 10, the plug lid manual unit 9 includes a rotating portion 911 protruding outward from the case 93, a supporting portion 912 protruding from the end surface of the rotating portion 911, and the like, as in the plug lid electric unit 4. There is. A tubular tube member 94 is attached to the case 93, and a wire-shaped transmission member 95 is inserted through the inner circumference of the tube member 94 in a state where it can be reciprocated. The transmission member 95 reciprocates with the displacement of a predetermined operating member (for example, an operating button) (not shown), which is operated when the drain port 104 is manually opened and closed.

Further, inside the case 93, the tip portion of the transmission member 95 is connected to a reciprocally movable member (not shown) having substantially the same configuration as the displacement member 46, and is provided on the side surface of the member. A plurality of teeth (not shown) are in a state of being meshed with a pinion (not shown) of the rotating portion 911.

Then, when the transmission member 95 moves forward (moves from the operation member side to the case 93 side) with the displacement of the operation member, the rotating portion 911 rotates to one side. As a result, the support portion 412 moves downward, so that the plug lid 55 moves downward and the drain port 104 is closed. On the other hand, when the transmission member 95 is relocated due to the displacement of the operating member, the rotating portion 911 rotates to the other side. As a result, when the support portion 412 moves upward, the plug lid 55 moves upward and the drain port 104 is opened.

Further, the case 93 includes a locking portion 931C having a claw portion 931D and a rotation restricting convex portion 931F, similarly to the case 43 in the plug lid electric unit 4. The configuration of the locking portion 931C and the claw portion 931D is the same as the configuration of the locking portion 431C and the claw portion 431D in the plug lid electric unit 4, and the configuration of the rotation regulating convex portion 931F is the rotation in the plug lid electric unit 4. It has the same configuration as the regulation convex portion 431F. Then, the stopper lid manual unit 9 can be attached to the pipe 3 by the same method as the attachment method of the stopper lid electric unit 4 to the pipe 3. That is, the plug lid electric unit 4 and the plug lid manual unit 9 are configured to be mountable to the pipe 3 by a common mounting method. The method of removing the plug lid manual unit 9 from the pipe 3 is also the same as the method of removing the plug lid electric unit 4 from the pipe 3.

As described in detail above, according to the present embodiment, the plug lid electric unit 4 having the motor 47 and the like is directly attached to the pipe 3 on the back side of the bottom wall portion 101. Therefore, the plug lid electric unit 4 (particularly the motor 47) can be provided in the vicinity of the plug lid 55, and the transmission path of the driving force from the motor 47 to the plug lid 55 can be made extremely short. As a result, when the driving force is transmitted from the motor 47 (driving unit 47A) to the plug lid 55, the loss of the driving force can be made less likely to occur, and the plug lid 55 can be operated more reliably. .. As a result, the operational stability of the drain plug device 1 can be improved.

Further, the driving force generated by the driving unit 47A is indirectly transmitted to the rotating unit 411 via only the gears 451 to 454. Therefore, the loss of the driving force can be made less likely to occur as compared with the case where the driving force is transmitted via the wire-shaped transmission member or the like. As a result, the plug lid 55 can be operated more reliably, and the operation stability of the drain plug device 1 can be further improved.

Further, at least when the drain port 104 is in the open state, the absorber spring 53 is compressionally deformed when a downward force is applied to the plug lid 55. Therefore, when a large downward force is applied to the stopper lid 55, it is possible to prevent an excessive load from being applied to the support portion 412, the rotating portion 411, and the like. As a result, deformation and breakage of the support portion 412 and the like can be prevented more reliably. Further, the situation in which the support member 51 (supported portion 512) comes off from the support portion 412 and falls off can be more reliably prevented, and the operational stability of the drain plug device 1 can be further improved. In the present embodiment, due to the presence of the reduction gear group 45, it is unlikely that an excessive load is applied to the motor 47 when a large downward force is applied to the plug lid 55.

Further, in the present embodiment, a straight line formed by projecting the rotation axis of the drive unit 47A is orthogonal to the rotation axis of the rotation unit 411. Therefore, the size of the plug lid electric unit 4 along the direction of the rotation axis of the rotating portion 411 can be suppressed to a smaller size as compared with the configuration in which both rotation axes extend in parallel, and the plug lid The unity of the electric unit 4 can be made very good. This facilitates the handling of the plug lid electric unit 4 and makes the plug lid electric unit 4 less likely to get in the way after mounting. Therefore, workability and convenience can be improved. Further, even when the back side space (installation space) of the bottom wall portion 101 is relatively small, the plug lid electric unit 4 can be provided, and the degree of freedom of installation can be improved.

In addition, since the displacement member 46 is provided in the case 43, the rotating portion 411 and the displacement member 46 can be arranged in close proximity to each other. Therefore, the rotating portion 411 and the displacement member 46 can be more reliably linked, and the position of the displacement member 46 is assumed to reflect the state of the rotating portion 411 (that is, the open / closed state of the drain port 104). Is more certainly possible. As a result, the sensors 48A and 48B can more accurately detect the open / closed state of the drain port 104 based on the position of the displacement member 46.

In particular, in the present embodiment, since the displacement member 46 is directly meshed with the rotating portion 411 (pinion 411C), the rotating portion 411 and the displacement member 46 can be more reliably interlocked with each other. As a result, it is possible to more reliably make the position of the displacement member 46 reflect the state of the rotating portion 411 (that is, the open / closed state of the drain port 104). As a result, the open / closed state of the drain port 104 can be grasped more accurately based on the position of the displacement member 46, and the detection accuracy related to the open / closed state of the drain port 104 can be further improved.

Further, in the present embodiment, the supported portion 512 arranged along the inner peripheral surface of the main body tube 31 is supported by the relatively short support portion 412 configured so as not to reach the central axis of the main body tube 31. .. Therefore, it is possible to effectively prevent foreign matter such as dust and hair contained in the drainage from adhering to the support portion 412. Further, the portion of the pipe 3 located beyond (below) the support portion 412 can be cleaned relatively easily. As a result, cleanability and hygiene can be improved.

Further, the reduction gear group 45 and the worm gear 47B not only have a function of transmitting a driving force from the motor 47 to the rotating portion 411, but also the rotating portion 411 unintentionally rotates due to the influence of an external force other than the driving force. It also exerts a function of locking the rotating portion 411 at a fixed position by preventing the rotating portion 411 from being locked. Specifically, the function of locking the rotating portion 411 at a fixed position is exhibited by the resistance (friction force, etc.) generated by the reduction gear group 45 and the self-locking effect exerted by the worm gear 47B and the first gear 451. .. Therefore, when locking the rotating portion 411, it is not necessary to separately provide a mechanism for locking, and further, no electric power is required for locking. Therefore, the manufacturing cost can be suppressed, and when used, the advantages of extremely energy saving and economy can be generated.

In addition, either the plug lid electric unit 4 or the plug lid manual unit 9 can be selectively attached to the pipe 3, and both units 4 and 9 can be attached to the pipe 3 by a common mounting method. It is possible. That is, the mounting method does not change regardless of which of the units 4 and 9 is mounted. Therefore, the convenience of mounting the units 4 and 9 can be enhanced, and operations such as switching of the units 4 and 9 can be performed very easily.

Further, regardless of which of the units 4 and 9 is used, other parts (for example, the plug lid 55, the pipe 3 and the like) constituting the drain plug device 1 can be used in common. Therefore, the manufacturing cost can be reduced.

The content is not limited to the description of the above embodiment, and may be implemented as follows, for example. Of course, other application examples and modification examples not illustrated below are also possible.

(A) The configuration of the driving force transmission mechanism from the driving unit 47A to the rotating unit 411 may be changed as appropriate. For example, the number of gears constituting the reduction gear group 45, the ratio of the rotation speed of the worm gear 47B to the rotation speed of the gears meshed with the worm gear 47B, and the like may be appropriately changed.

Further, in the above embodiment, the driving force generated by the driving unit 47A is transmitted to the rotating unit 411 via the reduction gear group 45, but the driving force is transmitted to the rotating unit 411 without passing through the reduction gear group 45. For example, the worm gear 47B may be configured to be directly meshed with the pinion 411C so that the driving force generated by the driving unit 47A is directly transmitted to the rotating unit 411.

(B) In the above embodiment, the rotation shaft of the drive unit 47A is configured to extend in the vertical direction, but the rotation shaft of the drive unit 47A may be configured to extend in the horizontal direction or the oblique horizontal direction. good.

Further, in the above embodiment, the straight line formed by projecting the rotation axis of the drive unit 47A is orthogonal to the rotation axis of the rotation unit 411. The positional relationship may be changed. For example, both rotation axes may be configured to be parallel to each other, or both rotation axes may be configured to be orthogonal to each other.

(C) The plug lid electric unit 4 may be provided with a mechanism that enables manual operation of the plug lid 55. For example, a tube member (for example, the tube member 94) is connected to the tube connecting portion 431G, and a wire-shaped transmission member (for example, the transmission member 95) can be reciprocated around the inner circumference of the tube member. The insertion / transmission member is configured to reciprocate in the tube member with the displacement of a predetermined operation member (for example, an operation button) (not shown). Further, the transmission member is projected from the tip of the tube member and connected to the displacement member 46. In terms of smooth rotation of the rotating portion 411 by the reciprocating movement of the displacement member 46, the reduction gear group 45 may be composed of gears that can rotate with low resistance, or the reduction ratio of the reduction gear group 45 may be adjusted. It is preferable to reduce the number of gears constituting the reduction gear group 45, or to eliminate the reduction gear group 45.

In the case of the above configuration, when the drain port 104 is in the open state, the operation member is displaced and the transmission member is moved forward (moved from the operation member side to the plug electric unit 4 side). Then, the displacement member 46 moves forward. As a result, the support portion 412 moves downward as the rotating portion 411 rotates to one side, so that the plug lid 55 moves downward and the drain port 104 is closed.

On the other hand, when the drain port 104 is in the closed state, the displacement member 46 is displaced by displacement of the operation member and removing the transmission member (moving from the plug lid electric unit 4 side to the operation member side). Revolve. As a result, the support portion 412 moves upward as the rotating portion 411 rotates to the other side, so that the plug lid 55 moves upward and the drain port 104 is opened.

By making it possible to switch the open / closed state of the drain port 104 both electrically and manually as described above, the drain port can be used even when a component that operates by power supply, such as a motor 47 or the control means, breaks down. The open / closed state of 104 can be switched. Therefore, convenience can be improved.

(D) In the above embodiment, the function of locking the rotating portion 411 is exhibited by the actions of both the reduction gear group 45 and the worm gear 47B. On the other hand, the rotating portion 411 may be configured to exert the locking function only by the resistance generated by the reduction gear group 45. Further, the function of locking the rotating portion 411 may be exerted only by the self-locking effect exerted by the worm gear 47B and the gear meshed with the worm gear 47B.

(E) The method of attaching the plug lid electric unit 4 and the plug lid manual unit 9 to the pipe 3 is not limited to those mentioned in the above embodiment, and can be changed as appropriate. Therefore, for example, the plug lid electric unit 4 and the plug lid manual unit 9 may be screwed to the pipe 3, or the plug lid electric unit 4 and the plug lid manual unit 9 may be screwed to the pipe 3 by using snap fit. May be attached.

(F) In the above embodiment, the drainage port 104 is closed when the plug lid 55 (packing portion 55B) comes into contact with the bottom wall portion 101, but the plug lid 55 (packing portion 55B) May be configured to close the drainage port 104 when the drainage port member 2 comes into contact with the drainage port member 2.

(G) In the above embodiment, the wash bowl 100 is illustrated as the tank body, but the tank body to which the technical idea of the present invention can be applied is not limited to the wash bowl. Therefore, for example, the technical idea of the present invention may be applied to a bathtub, a kitchen sink, or the like.

1 ... Drain plug device, 3 ... Piping, 4 ... Plug lid electric unit, 9 ... Plug lid manual unit, 31 ... Main body pipe, 41 ... Rotating body, 43 ... Case, 45 ... Reduction gear group (reduction gear part), 46 ... Displacement member, 46A ... Gear, 47 ... Motor (energization drive mechanism), 47A ... Drive unit, 48A ... First magnetic sensor (open / close state detection sensor), 48B ... Second magnetic sensor (open / close state detection sensor), 53 ... Absorber spring, 55 ... stopper lid, 100 ... wash bowl (tank body), 101 ... bottom wall part, 104 ... drain port, 411 ... rotating part, 411C ... pinion, 412 ... support part, 451 ... first gear (gear) ), 452 ... Second gear (gear), 453 ... Third gear (gear), 454 ... Fourth gear (gear), 512 ... Supported part.

Claims (11)

A pipe having a main body pipe provided corresponding to a drainage port formed on the bottom wall of the tank body, and a pipe
A plug lid that opens and closes the drainage port by moving up and down,
A drain plug device including a plug lid electric unit for electrically driving the plug lid.
The stopper lid electric unit is
A rotating body provided with a rotatable rotating portion and a support portion for moving the plug lid up and down, which can be moved up and down with the rotation of the rotating portion.
An energization drive mechanism that has a drive unit that can be driven by energization and rotates the rotating unit as the drive unit is driven.
At least a case for holding the rotating body and the energizing drive mechanism is provided.
By attaching the case to the pipe, the plug lid electric unit is directly attached to the pipe on the back side of the bottom wall portion .
The plug lid electric unit is a unit in which at least the case, the rotating body having the rotating portion and the supporting portion, and the energizing drive mechanism are integrated, and the case, the rotating body, and the energizing driving mechanism are integrated. A drain plug device characterized in that it can be attached to and detached from the side of the pipe in a grouped state. The plug lid electric unit is configured such that the driving force generated in the driving portion is transmitted to the rotating portion directly or only through a gear arranged in the case. The drain plug device according to claim 1. In a state where the plug lid electric unit is attached to the pipe, the support portion is arranged in the main body pipe, and the plug lid is indirectly supported by the support portion.
An absorber spring provided in the transmission path of the driving force from the support portion to the plug lid and capable of compression deformation when a downward force is applied to the plug lid at least when the drain port is in the open state. The drain plug device according to claim 1 or 2, wherein the drain plug device is provided. The energization drive mechanism is a motor in which the drive unit rotates when energized.
In a state where the plug lid electric unit is attached to the pipe, the rotation axis of the drive unit is orthogonal to the rotation axis of the rotation unit, or the rotation shaft of the rotation unit is orthogonal to the rotation shaft. When the rotation axis of the drive unit is projected along a direction orthogonal to the surface with respect to a surface parallel to the rotation axis of the drive unit, with respect to the rotation axis of the rotation unit. The drain plug device according to any one of claims 1 to 3, wherein the straight lines formed by projecting the rotation axis of the drive unit are orthogonal to each other. The stopper lid electric unit is
A displacement member provided in the case and displaceable with the rotation of the rotating portion,
The drain plug device according to any one of claims 1 to 4, further comprising an open / closed state detection sensor that detects the open / closed state of the drain port by detecting the position of the displacement member. A pinion having a plurality of teeth is provided on the outer circumference of the rotating portion.
The drain plug device according to claim 5, wherein the displacement member is a rack including a plurality of teeth directly meshed with the pinion. It has a supported portion that is directly or indirectly attached to the plug lid, is arranged along the inner peripheral surface of the main body tube, and is supported by the support portion.
Claims 1 to 6, wherein the support portion is provided at a position that does not reach the central axis of the main body pipe when the plug lid electric unit is attached to the pipe. The drain plug device according to any one item. Instead of the plug lid electric unit, a plug lid manual unit for manually operating the plug lid can be attached to the pipe.
The drain plug according to any one of claims 1 to 7, wherein the plug lid electric unit and the plug lid manual unit are configured to be mounted on the pipe by a common mounting method. Device. The energization drive mechanism is a motor in which the drive unit rotates when energized.
The drain plug device according to any one of claims 1 to 8, further comprising a reduction gear portion that transmits the driving force generated in the driving portion to the rotating portion while reducing the rotation speed. .. The energization drive mechanism is a motor in which the drive unit rotates when energized.
Any of claims 1 to 9, wherein the power transmission mechanism from the drive unit to the rotating unit includes a worm gear that rotates with the rotation of the drive unit and a gear meshed with the worm gear. The drain plug device according to item 1. Used for a drain plug device equipped with a pipe having a main body pipe provided corresponding to a drain port formed on the bottom wall of the tank body and a plug lid that opens and closes the drain port by moving up and down. It is a plug lid electric unit for electricizing the plug lid.
A rotating body provided with a rotatable rotating portion and a support portion for moving the plug lid up and down, which can be moved up and down with the rotation of the rotating portion.
An energization drive mechanism that has a drive unit that can be driven by energization and rotates the rotating unit as the drive unit is driven.
At least a case for holding the rotating body and the energizing drive mechanism is provided.
By attaching the case to the pipe, it is configured so that it can be directly attached to the pipe on the back side of the bottom wall portion .
It is a unit in which at least the case, the rotating portion, the rotating body having the supporting portion, and the energizing drive mechanism are grouped together, and the case, the rotating body, and the energizing drive mechanism remain as a group. An electric plug lid electric unit characterized in that it can be attached to and detached from the side of the pipe.

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