JP2013044123A - Drain plug device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To relatively freely set position relation between an operation part and a plug cover or the like, to easily handle a transmission part further, and to improve operability by miniaturizing the operation part.SOLUTION: A drain plug device 1 comprises a support member 33 for supporting a plug cover 36, an operation part 2 having a movable part 22, a transmission part 4 for transmitting displacement of the movable part 22 to the support member 33, and a drive part 31 for vertically moving the support member 33 accompanying turning of itself. The movable part 22 is relatively turnable to a wash basin 100 as a tank. The transmission part 4 includes first and second transmission wires 41 and 42 fixed respectively to the movable part 22 and the drive part 31. By pulling the first transmission wire 41 by turning of the movable part 22, the drive part 31 is turned in one direction, and by pulling the second transmission wire 42 by the turning of the movable part 22, the drive part 31 is turned in the other direction.

Description

  The present invention relates to a drain plug device for opening and closing a drain outlet of a tank body.

  The drain plug device is equipped with a plug lid for opening and closing the drain port of a tank body (for example, a bathtub, a washbasin, etc.). It has been known.

  As a drain plug device that opens and closes the drain port by remote control, it has a movable part that is displaced along the axial direction of a push button, etc., and an operation part that is attached to a tank body or a structure in the vicinity thereof, There has been proposed one that includes a transmission portion that transmits a displacement along the axial direction and opens and closes a drain plug by moving a support member that supports the plug lid up and down. Specifically, a release wire is used as the transmission portion, and a mechanism having a mechanism (for example, a thrust lock mechanism or the like) that alternately raises and lowers the stopper lid every time the movable portion is operated is known ( For example, see Patent Document 1). In general, the transmission part (wire or the like) is arranged in the tube, and the transmission part moves in one direction (for example, pushing operation) in the tube, so that the support member and thus the stopper lid moves upward, and the transmission part is By moving in the tube in the other direction (for example, pulling operation), the support member and thus the stopper lid are moved downward.

JP 2002-322703 A

  By the way, in the said technique, in order to respond | correspond to the displacement range of a movable part, it is necessary to make the member etc. which support a movable part comparatively long along an axial direction, and an operation part will become comparatively large. Therefore, the position where the operation part can be disposed is limited to a position where there is sufficient space inside the tank body or the structure, and as a result, the position where the operation part is disposed with respect to the plug lid or the support member There is a risk of being limited.

  Furthermore, in order to move the stopper lid up and down by pushing and pulling the transmission part in the tube, the wire diameter of the transmission part is set to a certain size or more in order to transmit the movement more reliably during the pushing operation. It is preferable to prevent bending deformation of the part. However, when the wire diameter of the transmission part is increased, in order to move the transmission part smoothly in the tube, it is necessary to increase the bending radius of the transmission part. Becomes difficult. On the other hand, if the bending radius of the transmission part is reduced, the frictional force generated between the transmission part and the tube increases, so a large force is required to move the transmission part within the tube, and a large force is required to operate the movable part. Power is needed. As a result, the smooth operation of the movable part is hindered, and the operability may be deteriorated.

  The present invention has been made in view of the above circumstances, and the purpose thereof is to reduce the size of the operation unit, so that the positional relationship between the operation unit and the plug lid can be set relatively freely. An object of the present invention is to provide a drain plug device that facilitates handling of the transmission section and can improve operability.

  In the following, each means suitable for solving the above-described object will be described in terms of items. In addition, the effect specific to the means to respond | corresponds as needed is added.

Means 1. A plug lid provided at the drain of the tank body;
A support member that supports the stopper lid and is movable up and down relative to the tank body;
An operation unit that is attached to the tank body or a structure in the vicinity thereof and has a movable part that can be displaced with respect to the tank body or the structure;
A drain plug device provided between the movable part and the support member, and comprising a transmission part for transmitting the displacement of the movable part to the support member;
While being capable of relative rotation with respect to the tank body or the structure, and having a drive unit that moves the support member up and down with its own rotation operation,
The movable part is rotatable relative to the tank body or the structure,
The transmission unit is
The first transmission wire and the second transmission wire fixed to the movable part and the driving part, respectively,
The first and second transmission wires can be pushed and pulled in a cylindrical tube,
By rotating the movable part in one direction and pulling the first transmission wire in the tube, the drive part is rotated in one direction,
The drain plug device according to claim 1, wherein the movable portion is rotated in the other direction, and the driving portion is rotated in the other direction by pulling the second transmission wire in the tube.

  According to the above means 1, since the movable portion is not displaced in the axial direction but is rotated, it is not necessary to lengthen the member or the like that supports the movable portion, and the operation portion is reduced in size. be able to. As a result, even when the internal space of the tank body or the like is relatively small, it is possible to dispose the operation unit, and as a result, the relative positional relationship of the operation unit with respect to the plug lid or the like can be set relatively freely.

  Further, according to the above means 1, not the pushing operation, but the pulling operation of the first and second transmission wires (that is, the operation that does not cause the buckling of the wire), the rotating operation of the movable unit is applied to the driving unit. Since it is transmitted, the wire diameter can be reduced. Therefore, smooth movement of the wire in the tube can be realized while reducing the bending radius of the transmission portion. That is, it becomes easy to handle the transmission portion, and the movable portion can be smoothly rotated, so that the operability can be improved.

  In addition, in the above-described conventional method, when the movable portion is operated in one direction, the transmission portion performs one of the pushing operation and the pulling operation, and when the movable portion is operated in the other direction. The transmission unit performs the other of the pushing operation and the pulling operation. Accordingly, there is a possibility that a feeling of operation varies depending on the operation direction of the movable part.

  In this regard, according to the means 1, the rotating of the movable part is performed by the wire pulling operation both when the movable part is rotated in one direction and when the movable part is rotated in the other direction. The dynamic motion is transmitted to the drive unit. Therefore, it is possible to more reliably prevent a situation in which the operational feeling changes depending on the operation direction of the movable part.

Mean 2. The drive unit is provided with a support protrusion that protrudes into the drainage pipe and supports the support member directly or indirectly,
A portion of the support protrusion that supports at least the support member is configured to be movable up and down with respect to the tank body by rotation of the drive unit,
The drain plug device according to means 1, wherein the tip of the support protrusion does not reach the center of the pipe.

  According to the above means 2, since the protrusion amount of the support protrusion with respect to the inner peripheral surface of the pipe becomes very small, it becomes difficult for hair, dust and the like to be caught on the support protrusion, and the clogging of the pipe is effectively suppressed. be able to. In addition, since the protrusion amount of the support protrusion is small, it is possible to relatively easily clean the pipes, traps, and the like located ahead (downward) from the support protrusion.

  Means 3. The drain plug device according to means 1 or 2, wherein a turning radius of the driving unit is larger than a turning radius of the movable unit.

  Note that the “turning radius of the drive unit” refers to a part (transmission force receiving part) that is located on the outer peripheral side of the rotation axis of the drive part and receives a force from the transmission part. The distance. Further, the “turning radius of the movable part” means a part (transmission force) that is located on the outer peripheral side of the turning axis of the movable part and that is a base point for applying force to the transmission part. The distance to the “giving part” (hereinafter the same).

  Like the above means 3, by making the turning radius of the drive part larger than the turning radius of the movable part, the drive part can be sufficiently turned even if the force applied to the movable part is relatively small. . Therefore, the stopper lid can be easily moved up and down, and the operability can be further improved.

  Means 4. The drain plug device according to means 1 or 2, wherein a turning radius of the driving unit is made smaller than a turning radius of the movable unit.

  According to the above means 4, when the movable part is rotated, the rotation angle of the drive part becomes larger than the rotation angle of the movable part, and the drive part is enlarged even if the displacement amount of the movable part is small. It can be rotated. Therefore, the amount of displacement of the operation part (movable part) when the stopper lid is opened and closed can be reduced.

It is sectional drawing which shows the structure of a drain plug device. It is a cross-sectional perspective view which shows structures, such as an operation part. It is an expanded sectional view which shows the structure of a drain outlet mechanism. It is a cross-sectional perspective view which shows structures, such as a drive part. It is a perspective view which shows structures, such as an operation part. It is a perspective view which shows structures, such as a drive part.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1, the drain plug device 1 is attached to a basin 100 as a tank body, and includes an operation unit 2, a drain port mechanism 3, and a transmission unit 4.

  The operation part 2 is attached to the side wall part 102 standingly arranged by the outer periphery of the bottom wall part 101 of the washbasin 100, and is provided with the flange part 21 and the movable part 22 as shown in FIG.

  The flange portion 21 has a cylindrical shape, and one end portion thereof is inserted into the wash basin 100 from the hole portion 103 formed in the side wall portion 102, and the other end portion has a bowl shape protruding outward in the radial direction. None, protruding from the outer surface of the side wall 102. Further, a male screw portion 211 is formed on the outer peripheral surface of one end portion of the flange portion 21, and a predetermined nut 23 is inserted into the male screw portion 211 so as to sandwich the side wall portion 102 with the flange-shaped portion of the flange portion 21. As a result, the flange portion 21 is fixed to the side wall portion 102. An annular packing 24 made of an elastic material is provided between the flange-shaped portion of the flange portion 21 and the side wall portion 102, and the gap between the flange portion 21 and the side wall portion 102 is sealed by the packing 24. Has been.

  The movable portion 22 is inserted into the flange portion 21 and has a relatively large diameter insertion portion 221 having a claw portion 221A protruding radially outward at the other end, and a smaller diameter than the insertion portion 221. And a protruding portion 222 protruding toward the other end side.

  The insertion part 221 is inserted into the flange part 21, and the claw part 221 </ b> A is locked to a step formed on the inner periphery of the flange part 21. Therefore, the insertion part 221 is relatively immovable along the axial direction of the flange part 21 while being relatively rotatable (displaceable) with respect to the flange part 21 about the central axis of the insertion part 221. ).

  The protrusion 222 supports the operation knob 25 having a bottomed cylindrical shape. Specifically, the projecting portion 222 includes a concave constricted portion 222A at the tip portion thereof, and a protrusion provided on the inner periphery of the knob portion 25 is engaged with the constricted portion 222A. The knob portion 25 is supported in a state in which it cannot rotate relative to the protruding portion 222. And the movable part 22 rotates with the knob part 25 by rotating the knob part 25. An annular seal member 26 made of resin or rubber is sandwiched between the outer peripheral surface of the movable portion 22 (insertion portion 221) and the inner peripheral surface of the flange portion 21. Thereby, the exudation of the water from between the flange part 21 and the movable part 22 is suppressed.

  Further, a movable side attachment portion 223 is provided on the other end side of the movable portion 22 and has an annular shape to which the other end portion of the transmission portion 4 is attached (attachment of the transmission portion 4 to the movable side attachment portion 223). The state will be described in detail later).

  In addition, a tube holding member 27 including a tubular tube fixing portion 27A that protrudes radially outward is provided on the outer periphery of the movable side attachment portion 223. The tube holding member 27 cannot be relatively displaced with respect to the washbasin 100 by being fixed to the flange portion 21 or the like. Further, the other end portion of a flat tube 43 described later is inserted and fixed in the tube fixing portion 27A.

  Next, the drain port mechanism 3 will be described. As shown in FIG. 3, the drain port mechanism 3 is provided in the drain port 104 of the basin 100, and includes a drive unit 31, a water passage member 32, a support member 33, a hair catcher 34, and a drain port. A member 35 and a plug lid 36 are provided.

  As shown in FIG. 4, the drive unit 31 has a rod shape, and one end portion of the drive unit 31 is inserted into a cylindrical attachment tube 106 communicated with the drainage pipe 105. Further, the drive unit 31 is configured to be rotatable about its own central axis as a rotation axis while the movement along the axial direction is restricted by the claw portion 107 provided at the end of the attachment tube 106. ing.

  Further, a support protrusion 311 extending along the central axis direction of the drive unit 31 is provided on one end surface of the drive unit 31. In the present embodiment, the support protrusion 311 is provided at a position eccentric from the central axis of the drive unit 31 on one end face of the drive unit 31. As a result, the support protrusion 311 is rotated with the rotation of the drive unit 31. It is designed to move up and down.

  In addition, on the other end side of the drive unit 31, there is provided a drive-side attachment portion 312 that is annular and to which one end portion of the transmission portion 4 is attached (attachment of the transmission portion 4 to the drive-side attachment portion 312. The state will be described in detail later).

  In addition, a tube holding member 36 including a tubular tube fixing portion 36 </ b> A that protrudes radially outward is provided on the outer periphery of the drive side mounting portion 312. The tube holding member 36 is fixed to the attachment tube 106 so that it cannot be displaced relative to the basin 100. In addition, one end of a flat tube 43 described later is inserted and fixed in the tube fixing portion 36A.

  Returning to FIG. 3, the water-permeable member 32 has a cylindrical shape and is arranged in the pipe 105 so that the outer peripheral wall thereof is along the inner peripheral surface of the pipe 105. Further, the outer periphery of the lower end surface of the water passage member 32 is supported on the pipe 105 by being placed on the support protrusion 311, and the surface is washed by the vertical movement of the support protrusion 311 accompanying the rotation of the drive unit 31. It moves up and down relatively with respect to the vessel 100.

  Furthermore, in the present embodiment, the protrusion of the support protrusion 311 with respect to the inner peripheral surface of the pipe 105 is made relatively small so that one end (tip) of the support protrusion 311 does not reach the center of the pipe 105. Has been.

  In addition, the water flow member 32 includes a plurality of arm portions 32A extending from the outer peripheral wall toward the center of the drainage channel, and the lower end portion of the support member 33 having a rod shape is fixed to the arm portion 32A. . The support member 33 is fixed at its upper end to the center of the back surface of the plug lid 36, and when the water passage member 32 moves up and down, the support member 33 and thus the plug lid 36 move up and down to open and close the drain port 104. It has come to be. The support member 33 is configured to be separable at the substantial center of the support member 33 along its longitudinal direction. By separating the support member 33, the hair catcher 34 can be removed from the drain port 104 without removing the hair catcher 34. 36 can be removed from the drain port 104.

  The hair catcher 34 collects hair and the like, and is arranged in a state in which the outer peripheral edge thereof is in contact with the hanging portion 108 extending substantially along the vertical direction in the drain port 104. The hair catcher 34 includes a cylindrical portion 34A extending in the vertical direction at the center thereof, and the support member 33 is inserted into the cylindrical portion 34A. The support member 33 is supported by the hair catcher 34 whose outer peripheral edge is in contact with the hanging portion 108 of the drain port 104, so that the center axis of the support member 33 and the center axis of the drain port 104 substantially coincide with each other. And the central axis of the drain port 104 substantially coincide with each other.

  The drain port member 35 has a cylindrical shape, and a flange 109 extending radially inward from the lower end of the drooping portion 108 of the basin 100 between the upper end hook-shaped portion of the drain port member 35 and a predetermined nut 37. Is attached to the drainage port 104. Further, the lower end portion of the drain port member 35 is connected to the pipe 105 via the connecting pipe 111 including the overflow pipe 110 for flowing the overflow water from the basin 100, and as a result, from the drain port 104. A drainage channel leading to the pipe 105 is formed.

  The plug lid 36 includes a disc-shaped lid portion 36A made of resin or the like and an annular packing 36B made of an elastically deformable material. When closing the drainage port 104 with the plug lid 36, the packing 36 </ b> B comes into pressure contact with the tapered portion 112 of the drainage port 104 whose diameter is reduced downward. The gap is sealed. In the present embodiment, as described above, since the central axis of the plug lid 36 and the central axis of the drain port 104 are substantially coincident with each other, the outer peripheral edge of the plug lid 36 (packing 36B) is connected to the drain port 104. Therefore, the sealing property between the plug lid 36 and the drainage port 104 is improved.

  Returning to FIG. 1, the transmission unit 4 is provided between the operation unit 2 (movable unit 22) and the drain port mechanism 3 (support member 33), and transmits the displacement of the movable unit 22 to the support member 33. is there. In the present embodiment, the transmission unit 4 includes the first transmission wire 41 and the second transmission as shown in FIGS. 5 and 6 (note that the side wall 102 is omitted in FIG. 5 for convenience of illustration). A wire 42 is used. Both transmission wires 41 and 42 are each made of a predetermined metal and are parallel to a cylindrical flat tube 43 (corresponding to the tube of the present invention) made of a predetermined resin or the like. It is inserted. The first transmission wire 41 can be pushed and pulled in the flat tube 43, and the second transmission wire 42 can be pushed and pulled in the flat tube 43.

  In addition, as shown in FIGS. 2 and 5, the other end side of the first transmission wire 41 is a virtual plane passing through the tube fixing portion 27 </ b> A and the rotation axis X <b> 1 of the movable portion 22 in the movable side attachment portion 223. It is fixed to the movable side mounting portion 223 in a state of being wound around one side (right side in FIG. 5) from VS1. On the other hand, the other end side of the second transmission wire 42 is fixed to the movable side mounting portion 223 in a state of being wound around the other side (left side in FIG. 5) of the virtual side VL1 in the movable side mounting portion 223. Has been. In addition, both the transmission wires 41 and 42 are arrange | positioned with respect to the groove part 223M provided in the outer periphery of the movable side attaching part 223 (refer FIG. 2).

  Further, the first and second transmission wires 41 and 42 have their other end portions inserted and fixed to a predetermined attachment for attachment 224, and the attachment for attachment 224 is located on the inner peripheral side of the movable side attachment portion 223. It is being fixed to the movable side attachment part 223 by being fixed to the concave attachment attachment part 225 formed in this. The lengths of the first and second transmission wires 41 and 42 between the mounting portions 223 and 312 are adjusted by changing the amount of insertion of the first and second transmission wires 41 and 42 into the attachment 224 for attachment. It can be done.

  As shown in FIGS. 4 and 6, one end side of the first transmission wire 41 is from a virtual plane VS <b> 2 passing through the tube fixing portion 36 </ b> A and the rotation axis X <b> 2 of the drive portion 31 in the drive side attachment portion 312. Is also fixed to the drive side mounting portion 312 in a state of being wound around one side (the upper side in FIG. 6). On the other hand, the other end side of the second transmission wire 42 is wound around the driving side mounting portion 312 in a state of being wound around the other side (lower side in FIG. 6) of the driving side mounting portion 312 from the virtual surface VS2. It is fixed. In addition, both the transmission wires 41 and 42 are arrange | positioned with respect to the groove part 312M provided in the outer periphery of the drive side attaching part 312 (refer FIG. 4).

  In the present embodiment, the first transmission wire 41 is pulled in the flat tube 43 by rotating the movable portion 22 in one direction along with the operation of the knob portion 25, and the drive portion 31 is moved in one direction. To turn. On the other hand, when the movable portion 22 is rotated in the other direction in accordance with the operation of the knob portion 25, the second transmission wire 42 pulls in the flat tube 43, and the drive portion 31 moves in the other direction. To turn. That is, in the present embodiment, the driving unit 31 is rotated by the pulling operation of the transmission wires 41 and 42, and the support protrusion 311 of the driving unit 31 moves up and down relatively with respect to the washbasin 100. As the support protrusion 311 moves up and down, the plug cover 36 supported by the support member 33 and the like moves up and down. As a result, the drain port 104 is opened and closed.

  Furthermore, in the present embodiment, the drive unit 31 is operated by pulling the wires 41 and 42 in the flat tube 43, and the pushing operation of the wires 41 and 42 in the flat tube 43 is to operate the drive unit 31. It is not functioning in particular. For this reason, when the drive unit 31 is operated by a pushing operation, the wire diameter of the wire needs to be relatively large in order to transmit the force more reliably. The wire diameters of the wires 41 and 42 are relatively small (for example, 0.5 mm or less).

  In addition, in the present embodiment, as shown in FIGS. 5 and 6, the turning radius D <b> 2 of the drive unit 31 is configured to be substantially equal to the turning radius D <b> 1 of the movable unit 22.

  As shown in FIG. 5, the “turning radius D1” is located on the outer peripheral side of the turning axis X1 of the movable part 22 from the turning axis X1 of the movable part 22 and is the transmission part. 4 (first and second transmission wires 41, 42) is a distance to a base point where force is applied, and corresponds to the winding diameter of the wires 41, 42 with respect to the movable portion 22 in this embodiment.

  Further, as shown in FIG. 6, the “turning radius D2” is located on the outer peripheral side of the drive unit 31 from the rotary shaft X2 of the drive unit 31 to the transmission unit X1. 4 (first and second transmission wires 41, 42) refers to the distance to the portion receiving the force, and corresponds to the winding diameter of the wires 41, 42 with respect to the drive unit 31 in this embodiment.

  As described above in detail, according to the present embodiment, the movable portion 22 is not displaced in the axial direction, but is rotated, so that the flange portion 21 or the like that supports the movable portion 22 is elongated. Is unnecessary, and the operation unit 2 can be downsized. As a result, even when the internal space of the washbasin 100 is relatively small, the operation unit 2 can be disposed, and as a result, the relative positional relationship of the operation unit 2 with respect to the plug lid 36 and the like can be set relatively freely. Can do.

  Furthermore, according to the present embodiment, the pulling operation of the first and second transmission wires 41 and 42 (that is, the operation that does not cause buckling of the wires 41 and 42) is performed instead of the pushing operation. Since the rotation operation is transmitted to the drive unit 31, the wire diameters of the wires 41 and 42 can be reduced. Therefore, smooth movement of the wires 41 and 42 in the flat tube 43 can be realized while reducing the bending radius of the transmission portion 4. That is, the transmission unit 4 can be easily handled, and the movable unit 22 can be smoothly rotated, so that the operability can be improved.

  In addition, when the movable portion 22 is rotated in one direction and when the movable portion 22 is rotated in the other direction, the movable portion 22 is rotated by the pulling operation of the wires 41 and 42. The operation is transmitted to the drive unit 31. Accordingly, it is possible to more reliably prevent a situation in which the operational feeling changes depending on the operation direction of the movable portion 22.

  Further, since the protruding amount of the support protrusion 311 with respect to the inner peripheral surface of the pipe 105 is very small, it becomes difficult for hair, dust, etc. to be caught on the support protrusion 311, and clogging of the pipe 105 is effectively suppressed. can do. In addition, since the protruding amount of the support protrusion 311 is small, it is possible to relatively easily clean pipes, traps, and the like that are positioned ahead (downward) from the support protrusion 311.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, the turning radius D2 of the drive unit 31 is configured to be substantially equal to the turning radius D1 of the movable unit 22, but the turning radius D2 is larger than the turning radius D1. May be. In this case, even if the force applied to the movable part 22 (knob part 25) is relatively small, the drive part 31 can be sufficiently rotated. Therefore, the stopper lid 36 can be easily moved up and down, and the operability can be improved.

  Further, the turning radius D2 may be smaller than the turning radius D1. In this case, when the movable unit 22 (knob unit 25) is rotated, the rotation angle of the drive unit 31 is larger than the rotation angle of the movable unit 22, and the displacement amount of the movable unit 22 is small. Even so, the drive unit 31 can be largely rotated. Therefore, the amount of displacement of the operation unit 2 (movable unit 22) when the plug lid 36 is opened and closed can be reduced.

  (B) In the above embodiment, the attachment 224 for attachment is used to attach the first and second transmission wires 41 and 42 to the movable side attachment portion 223. However, the first attachment without the attachment 224 is provided. The end portions of the second transmission wires 41 and 42 may be directly fixed to the outer periphery of the movable side mounting portion 223.

  (C) In the said embodiment, although the 1st, 2nd transmission wires 41 and 42 are penetrated in one flat tube 43, two tubes are provided and the 1st transmission wire 41 is provided in one tube. The second transmission wire 42 may be inserted through the other tube.

  (D) In the said embodiment, although the drain plug device 1 is attached to the washbasin 100 as a tank body, the attachment object of the drain plug device 1 is not restricted to the washbasin 100, For example, a washbasin It is good also as attaching the drain plug apparatus 1 to tank bodies (for example, a bathtub, a sink, etc.) other than. Moreover, it is good also as attaching the operation part 2 to the structure provided in the vicinity of the tank body, while attaching the drain port mechanism 3 to a tank body.

  DESCRIPTION OF SYMBOLS 1 ... Drain plug apparatus, 2 ... Operation part, 4 ... Transmission part, 22 ... Movable part, 31 ... Drive part, 33 ... Support member, 36 ... Plug lid, 41 ... 1st transmission wire, 42 ... 2nd transmission wire, 43 ... Flat tube (tube), 100 ... Basin (tub), 105 ... Piping, 311 ... Support projection.

Claims (4)

A plug lid provided at the drain of the tank body;
A support member that supports the stopper lid and is movable up and down relative to the tank body;
An operation unit that is attached to the tank body or a structure in the vicinity thereof and has a movable part that can be displaced with respect to the tank body or the structure;
A drain plug device provided between the movable part and the support member, and comprising a transmission part for transmitting the displacement of the movable part to the support member;
While being capable of relative rotation with respect to the tank body or the structure, and having a drive unit that moves the support member up and down with its own rotation operation,
The movable part is rotatable relative to the tank body or the structure,
The transmission unit is
The first transmission wire and the second transmission wire fixed to the movable part and the driving part, respectively,
The first and second transmission wires can be pushed and pulled in a cylindrical tube,
By rotating the movable part in one direction and pulling the first transmission wire in the tube, the drive part is rotated in one direction,
The drain plug device according to claim 1, wherein the movable portion is rotated in the other direction, and the driving portion is rotated in the other direction by pulling the second transmission wire in the tube. The drive unit is provided with a support protrusion that protrudes into the drainage pipe and supports the support member directly or indirectly,
A portion of the support protrusion that supports at least the support member is configured to be movable up and down with respect to the tank body by rotation of the drive unit,
The drain plug device according to claim 1, wherein a tip of the support protrusion does not reach a center of the pipe.   The drain plug device according to claim 1 or 2, wherein a turning radius of the driving unit is larger than a turning radius of the movable unit.   The drain plug device according to claim 1 or 2, wherein a turning radius of the driving unit is smaller than a turning radius of the movable unit.

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