JP2018040176A - Drain plug device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain plug device capable of easily opening/closing a drain port and changing a drain flow rate.SOLUTION: The drain plug device includes a drain port member 10 forming a drain port 11, a drain plug 30 to be moved between a closing position for closing the drain port 11 and a plurality of opening positions for opening the drain port 11 to allow for different-volume drainage per unit time, and a holding mechanism for holding the drain plug 30 at the plurality of opening positions.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a drain plug device.

  Patent Document 1 discloses a conventional drain plug device. The drain plug device includes a drain plug, a drain port member, and an eye plate. The drain plug opens and closes the drain port formed in the drain port member. The drain port member forms a circular drain port and a drain channel continuous to the drain port. The drain port member has a cross-shaped rib provided in the middle of the drainage channel. The eye plate has a disk shape, and four circular through holes are formed. The eye plate can be detachably mounted on the rib of the drainage channel. For this reason, in this drain plug device, when the eye plate is placed on the rib of the drain channel of the drain port member, the drainage amount per unit time (hereinafter referred to as drainage flow rate) drained through the drain channel is on the rib. This can be reduced as compared with the case where no eye plate is placed on the plate.

Japanese Utility Model Publication No. 64-4186

  However, when the drainage flow rate is changed using the drain plug device of Patent Document 1, it is necessary to attach and detach the eye plate from the drainage channel of the drainage port member each time. Further, this drain plug device is separate from the drain plug whose eye plate opens and closes the drain port. For this reason, in this drain plug device, the opening and closing of the drain port and the change of the drain flow rate are different operations.

  This invention is made | formed in view of the said conventional situation, Comprising: It is set as the problem which should be solved to provide the drain plug apparatus which can perform opening and closing of a drain outlet, and the change of drainage flow volume easily.

The drain plug device of the present invention comprises:
A drain member forming the drain; and
A drain plug that moves between a closed position that closes the drain port, and a plurality of open positions that open the drain port and have different amounts of drainage per unit time;
A holding mechanism for holding the drain plug at a plurality of the open positions;
It is characterized by having.

  The drain plug device moves between a closed position where the drain plug closes the drain port and a plurality of open positions where the drain flow rate (drainage amount per unit time) is different. For this reason, this drain plug device can open and close the drain port and change the drain flow rate only by operating the drain plug.

  Therefore, the drain plug device of the present invention can easily open and close the drain port and change the drainage flow rate.

  In addition, since this drain plug device has a holding mechanism that holds the drain plug at a plurality of open positions, the drain plug moves due to the influence of water pressure or the like when draining, and the drainage flow rate changes. This can be prevented.

It is principal part sectional drawing of the bathtub in which the drain plug apparatus of Example 1 was attached. In the drain plug apparatus of Example 1, it is the schematic which shows the state which has a drain plug in a closed position. In the drain plug apparatus of Example 1, it is an expanded view explaining the movement of the holding mechanism when the drain plug is moved from the closed position to the first open position and is held, and (A) shows the drain plug in the closed position. FIG. 4B shows the state of the holding mechanism when the operation button is pushed down, and FIG. 5C shows the state of the holding mechanism when the drain plug is held at the first open position. Shows the state. In the drain plug apparatus of Example 1, it is the schematic which shows the state by which the drain plug was hold | maintained in the 1st open position. FIG. 6 is a development view for explaining the movement of the holding mechanism when the drain plug is moved from the state held in the first open position to the second open position and held in the drain plug device of Example 1; ) Shows the state of the holding mechanism when the drain plug is held in the first open position, and (B) shows the state of the holding mechanism when the drain plug is held in the second open position by pushing down the operation button. . In the drain plug device of Example 1, it is the schematic which shows the state by which the drain plug was hold | maintained in the 2nd open position (full open position). In the drain plug apparatus of Example 1, it is an expanded view explaining the movement of the holding mechanism when the drain plug is moved from the state held at the second open position to the closed position, and FIG. 2 shows the state of the holding mechanism when held in the open position, (B) shows the state of the holding mechanism when the operation button is pushed down, and (C) shows the holding when the drain plug is held in the closed position. Indicates the state of the mechanism. In the drain plug device of Example 2, (A) is in a state where the drain plug is in the closed position, (B) is in a state where the drain plug is held in the first open position, and (C) is in the second open position. It is the schematic which shows the state hold | maintained at. It is sectional drawing which shows the state which has a drain plug in a closed position in the drain plug apparatus of Example 3. FIG. It is sectional drawing which shows the state with which the drain plug was hold | maintained in the 1st open position in the drain plug apparatus of Example 3. FIG. It is sectional drawing which shows the state with which the drain plug was hold | maintained in the 2nd open position in the drain plug apparatus of Example 3. FIG. It is a perspective view which shows the drain outlet member and drain plug of the drain plug apparatus of Example 4. FIG. It is sectional drawing which shows the state which has a drain plug in a closed position in the drain plug apparatus of Example 4. FIG. It is sectional drawing which shows the state in which the drain plug was hold | maintained in the 1st open position in the drain plug apparatus of Example 4. It is sectional drawing which shows the state in which the drain plug was hold | maintained in the 2nd open position in the drain plug apparatus of Example 4.

  A preferred embodiment of the present invention will be described.

  The drain plug device of the present invention includes a cord-like object that moves the drain plug by moving forward and backward in the axial direction, and an operation unit that advances and retracts the cord-like object in the axial direction. It can be incorporated between the part and the drain plug. In this case, it is possible to remotely control the opening / closing of the drain port and the change of the drainage flow rate by arranging the operation unit at a position where it can be easily operated and incorporating the holding mechanism into an appropriate part.

  In the drain plug device of the present invention, the holding mechanism may be configured by a locking portion provided in one of the drain port member or the drain plug and a locked portion provided in the other. In this case, it is possible to open and close the drain outlet and change the drainage flow rate with a simple configuration.

  Next, Examples 1 to 4 embodying the drain plug device of the present invention will be described with reference to the drawings.

<Example 1>
As shown in FIGS. 1 and 2, the drain plug device of the first embodiment includes a drain port member 10, a drain plug 30, a wire 50 that is a cord-like object, and an operation unit 70 in which a holding mechanism is incorporated. . This drain plug device is attached to the bathtub 1. The drain port member 10 is attached to the opening 2 penetrating the bottom surface 1 </ b> A of the bathtub 1 to form a drain port 11. The drain port 11 has a circular shape when viewed from above. The drain port member 10 has a flange 13 that engages with the peripheral edge of the opening 2 when inserted into the opening 2 penetrating the bottom surface 1 </ b> A of the bathtub 1 from the inside of the bathtub 1. Further, the drain port member 10 has a guide portion 15 through which a shaft portion 33 of a drain plug 30 described later is inserted and guides the vertical movement of the drain plug 30. Here, as shown in FIG. 1, the upper and lower sides are the upper and lower sides in a state where the drain plug device is attached to the bathtub 1 (the same applies hereinafter).

  As shown in FIGS. 1 and 2, the drain plug 30 has a lid portion 31 and a shaft portion 33. The lid portion 31 has a disk shape formed with a curved surface whose upper surface swells upward, and a lower surface formed with a plane extending on a horizontal plane. The outer diameter of the lid portion 31 is larger than the inner diameter of the drain port 11. An annular packing (not shown) is fixed to the lower surface of the lid portion 31 that is lowered and contacts the flange portion 13 of the drain port member 10. When the drain plug 30 is located at the closed position, the packing abuts against the upper surface of the flange 13 of the drain port member 10 to ensure water tightness. The shaft portion 33 has a cylindrical shape in which the upper end portion is connected to the center portion of the lower surface of the lid portion 31 and extends downward in a straight line. The shaft portion 33 is inserted through the guide portion 15 of the drain port member 10 so as to be movable up and down. One end of the wire 50 is in contact with the lower end of the shaft 33 of the drain plug 30 and the other end is connected to the center of the lower end surface of the rotating shaft 74B of the rotor 74 of the holding mechanism described later. Yes.

  As shown in FIG. 2, the operation unit 70 incorporating the holding mechanism includes a case 71, an operation button 72, a knock bar 73, a rotor 74, four locking members 75, and a coil spring 76. The operation unit 70 is fixed to the upper portion of the bathtub 1 so that the operation button 72 is inserted through a through-hole penetrating the flange portion 1 </ b> B of the bathtub 1. The case 71 has a cylindrical shape extending in the vertical direction. The case 71 has an upper surface portion 71U in which an upper through hole 71A is formed. The upper through hole 71A is inserted through an operation shaft portion 73A of a knock rod 73 described later. In addition, the case 71 has a lower surface portion 71S in which a lower through hole 71B is formed. The lower through-hole 71B is inserted through the wire 50.

  The operation button 72 has a disk shape in which the upper surface and the lower surface are formed in a plane extending on a horizontal plane. The knock bar 73 has an operation shaft portion 73A and a cam portion 73B. The operation shaft portion 73A has a cylindrical shape whose upper end is continuous with the center portion of the lower surface of the operation button 72 and extends in the vertical direction. The operating shaft portion 73A passes through the upper through hole 71A of the case 71 and can reciprocate in the vertical direction. The cam portion 73B is continuous with the lower end of the operation shaft portion 73A and has a disk shape centered on the central axis of the operation shaft portion 73A. The outer diameter of the cam portion 73B is larger than the outer diameter of the operation shaft portion 73A and smaller than the inner diameter of the case 71. Moreover, the cam part 73B is formed in the outer peripheral part of a lower surface, and has the downward convex part 73C of the triangular wave shape in a side view. The cam portion 73B is housed in the case 71 so as to be reciprocally movable in the vertical direction.

  The rotor 74 has a rotor body 74A and a rotation shaft portion 74B. The rotor main body 74A has a disk shape having an outer diameter substantially equal to that of the cam portion 73B. The rotor main body 74A has a flat upper surface and lower surface. As shown in FIGS. 2 and 3, the rotor main body 74A has four cam protrusions 77 protruding upward from the upper surface of the rotor main body 74A and protruding outward from the side surface of the rotor main body 74A. doing. Each cam projection 77 extends in the vertical direction and projects. The cam protrusions 77 are provided on the outer periphery of the rotor main body 74A at the same interval. Each cam projection 77 is in contact with an inclined surface 73D in which an upper surface 77A protruding upward from the upper surface of the rotor body 74A is inclined in one direction (upper left direction in FIGS. 2 and 3) of the downward convex portion 73C of the cam portion 73B. In contact with each other, the inclined surface 73D is inclined in the same direction (in the upper left direction in FIGS. 2 and 3) as the inclination angle of the inclined surface 73D inclined in one direction. Each cam projection 77 has a lateral width smaller than the lateral width of a first guide groove 80A, a second guide groove 80B, a first locking portion 75A, and a second locking portion 75B of a locking member 75, which will be described later. The rotating shaft portion 74B has a cylindrical shape whose upper end is continuous with the center portion of the lower surface of the rotor body 74A and extends in the vertical direction. The rotor 74 is rotatable around the central axis, and is housed in the case 71 so as to reciprocate in the vertical direction. The rotor 74 has the other end of the wire 50 connected to the center of the lower end surface of the rotating shaft 74B. The wire 50 is inserted through the lower through hole 71B of the case 71 and extends outward from the case 71 so as to freely advance and retract.

  As shown in FIGS. 2 and 3, each locking member 75 is formed with a first guide groove 80A between the locking members 75 for the cam projection 77 of the rotor body 74A to reciprocate in the vertical direction. However, the case 71 is provided side by side along the upper inner peripheral surface. Each locking member 75 has a first locking portion 75A and a second locking portion 75B that the cam projection 77 of the rotor body 74A locks. The first locking portion 75A of each locking member 75 is formed at the upper end of a second guide groove 80B formed by cutting from the lower end of each locking member 75 to the middle portion in the vertical direction of each locking member 75. ing. The first locking portion 75A of each locking member 75 is inclined in the same inclination angle and the same direction (upper left direction in FIGS. 2 and 3) as the upper surface 77A of the cam projection 77 of the rotor body 74A. The lower surface 81A of the first boundary portion 81 extending downward between the first guide groove 80A and the second guide groove 80B has the same inclination angle and the same direction as the first locking portion 75A (in FIGS. 2 and 3). Inclined in the upper left direction. The second locking portion 75B of each locking member 75 is formed continuously from the lower end edge of the second guide groove 80B opposite to the first guide groove 80A, and has the same inclination as the first locking portion 75A. The angle is inclined in the same direction (upper left direction in FIGS. 2 and 3). Each locking member 75 protrudes below the second locking portion 75B between the second locking portion 75B and the first guide groove 80A, and the lower surface 82A has the same inclination angle as the second locking portion 75B. And it has the 2nd boundary part 82 inclined in the same direction (upper left direction in FIG.2 and FIG.3). In this drain plug device, the knock bar 73, the rotor 74, and each locking member 75 constitute a holding mechanism.

  As shown in FIG. 2, the coil spring 76 is disposed outside the rotation shaft portion 74 </ b> B of the rotor 74 and between the lower surface of the rotor body 74 </ b> A and the upper surface of the lower surface portion 71 </ b> S of the case 71. . The coil spring 76 applies an elastic force in the upward direction to the rotor 74, the knock bar 73, and the operation button 72.

  In the drain plug device having such a configuration, when the operation button 72 is pushed down against the elastic force of the coil spring 76 in a state where the drain plug 30 is in the closed position (see FIG. 2), the knock bar 73 is lowered. The rotor 74 is lowered. At this time, the cam protrusion 77 of the rotor main body 74A descends along the side surface on the first boundary 81 side in the first guide groove 80A (see FIGS. 3A and 3B). When the rotor main body 74A descends and the upper surface 77A of the cam projection 77 reaches a position continuous with the lower surface 81A of the first boundary portion 81, the cam projection 77 is rotated while the rotor 74 is rotated by the elastic force of the coil spring 76. Slide along the lower surface 81A of the boundary portion 81 (see FIG. 3B). The cam projection 77 is fitted into the second guide groove 80B while the rotor 74 is further rotated by the elastic force of the coil spring 76, and the cam projection 77 is locked to the first locking portion 75A (FIG. 3 ( C)). In this state, the wire 50 is fed outward from the case 71 as compared with the state in which the drain plug 30 is in the closed position, and the drain plug 30 is positioned at an intermediate height as shown in FIG. Held in the first open position. That is, since the cam projection 77 is locked to the first locking portion 75A, the wire 50 is not drawn into the case 71, and the drain plug 30 is held in a state where it cannot move downward from the first open position. The The drainage flow rate in the state where the drain plug 30 is held at the first open position is smaller than the drainage flow rate in the state where the drain plug 30 described later is held in the second open position.

  In this drain plug device, when the operation button 72 is pushed down against the elastic force of the coil spring 76 in a state where the drain plug 30 is in the first open position (see FIG. 4), the knock bar 73 is lowered and the rotor 74 is lowered. Descends. At this time, the cam protrusion 77 of the rotor main body 74A descends along the side surface on the second locking portion 75B side in the second guide groove 80B (see FIGS. 5A and 5B). When the rotor main body 74A is lowered and the upper surface 77A of the cam projection 77 is in a position continuous with the second locking portion 75B (see FIG. 5B), the rotor 74 is rotated by the elastic force of the coil spring 76. The cam projection 77 slides along the second locking portion 75B while the cam projection 77 is locked to the second locking portion 75B (see FIG. 5B). In this state, the wire 50 is fed outward from the case 71 as compared with the state in which the drain plug 30 is in the first open position, and the drain plug 30 is positioned at the highest height as shown in FIG. The valve is held at the second opened position (fully opened position). That is, since the cam projection 77 is locked to the second locking portion 75B, the wire 50 is not drawn into the case 71 and the drain plug 30 cannot move downward from the second open position (fully open position). Kept in a state.

  In the drain plug 30, when the operation button 72 is pushed down against the elastic force of the coil spring 76 in a state where the drain plug 30 is in the second open position (fully opened position) (see FIG. 6), the knock bar 73 is lowered. At the same time, the rotor 74 is lowered. At this time, the cam projection 77 of the rotor body 74A descends along the side surface of the second locking portion 75B on the second boundary portion 82 side (see FIGS. 7A and 7B). When the rotor main body 74A descends and the upper surface 77A of the cam projection 77 reaches a position where it continues to the lower surface 82A of the second boundary portion 82, the cam projection 77 is moved while the rotor 74 is rotated by the elastic force of the coil spring 76. 2 Slide along the lower surface 82A of the boundary portion 82 (see FIG. 7B). Then, the cam protrusion 77 is fitted into the first guide groove 80A while the rotor 74 is further rotated by the elastic force of the coil spring 76, and the first guide groove 80A is raised (see FIG. 7C). In this state, the wire 50 is drawn into the case 71, and the drain plug 30 is in the closed position as shown in FIG.

As described above, in this drain plug device, the state of the drain plug 30 is repeatedly changed in the order of the closed position, the first opened position, the second opened position (fully opened position), and the closed position each time the operation button 72 is pushed down. That is, the drain plug device can open and close the drain port 11 and change the drain flow rate only by operating the drain plug 30 by depressing the operation button 72.
Therefore, this drain plug device can easily open and close the drain port 11 and change the drainage flow rate.

  In addition, since the drain plug device has a holding mechanism that holds the drain plug 30 at the first open position and the second open position, the drain plug 30 moves due to the influence of water pressure or the like when draining. It is possible to prevent the drainage flow rate from changing.

  In addition, the drain plug device can be remotely operated to open and close the drain port 11 and change the drainage flow rate by providing the operation button 72 of the operation unit 70 on the flange portion 1B of the bathtub 1 so as to be easily operated. .

  Moreover, if a foaming agent is mixed in the hot water stretched on the bathtub 1 to which the drain plug device is attached, foam is generated and bathed, and then the drain plug 30 is held at the first open position for draining, the drainage flow rate Can be reduced, foaming in the drainage pipe is prevented, and drainage can be performed satisfactorily. On the other hand, after bathing the hot water stretched on the bathtub 1 fitted with this drain plug device without mixing foaming agent, the drain plug 30 is held in the second open position, and the drainage flow rate is increased to drain the water in a short time. can do.

<Example 2>
The drain plug device of the second embodiment is different from the first embodiment in that the drain plug 130 slides in the horizontal direction to open and close the drain port 11. Other configurations are the same as those of the first embodiment, and the same configurations are denoted by the same reference numerals and detailed description thereof is omitted.

In the drain plug device, the drain plug 130 closes the drain port 11 (see FIG. 8A), and the drain plug 130 opens the drain port 11 halfway (see FIG. 8B). The drain plug 130 slides below the drain port 11 so that the drain plug 130 is in the second open position (full open position) where the drain port 11 is completely opened. That is, in this drain plug device, the wire 50 is connected to the drain plug 130, and the drain plug 130 is in the second open position (fully opened position) when the wire 50 is pulled into the case 71, and is operated in this state. When the button 72 is pushed down, the wire 50 is fed out from the case 71 to the first open position, and when the operation button 72 is pushed down again, the wire 50 is further fed out from the case 71 to the closed position. When the operation button 72 is pushed down again, the wire 50 is drawn into the case 71 and enters the closed position. As described above, in this drain plug device, each time the operation button 72 is depressed, the drain plug 130 is in the order of the second open position (fully opened position), the first open position, the closed position, and the second open position (fully opened position). It changes repeatedly. That is, the drain plug device can open and close the drain port 11 and change the drain flow rate only by pressing the operation button 72 and operating the drain plug 130.
Therefore, this drain plug device can easily open and close the drain port 11 and change the drainage flow rate.

<Example 3>
As shown in FIGS. 9 to 11, the drain plug device of the third embodiment includes a drain port member 210 and a drain plug 230. This drain plug device is attached to the bathtub 1. The drain port member 210 has a drain port body 211 and a flange 213. The drain port body 211 has a cylindrical shape, and is threaded on the outer peripheral surface and the inner peripheral surface. The flange portion 213 has an annular shape extending outward from the upper end edge of the drain port body 211. The drain port member 210 inserts the drain port body 211 from above into the opening 2 penetrating the bottom surface 1 </ b> A of the bathtub 1, engages the flange 213 with the peripheral edge of the opening 2, and starts from the lower end of the drain port body 211. A nut N is screwed and fixed to the outer peripheral surface of the drain outlet main body 211. The upper opening of the drain port member 210 forms the drain port 11.

  The drain plug 230 has a lid 231 and a drain plug body 233. The lid portion 231 has a disk shape. The outer diameter of the lid portion 231 is larger than the inner diameter of the drain port 11 and smaller than the outer diameter of the flange portion 213. The lid portion 231 has an annular packing P fixed to the outer peripheral edge of the lower surface. When the drain plug 230 is located at the closed position, the packing P abuts against the upper surface of the flange portion 213 of the drain port member 210 to ensure water tightness. The drain plug main body 233 has a cylindrical shape, and a thread that is screwed into a thread that is carved on the inner peripheral surface of the drain outlet main body 211 is formed on the outer peripheral surface. Further, the drain plug body 233 has four vertically-oriented rectangular openings 233A that are provided at equal intervals in the circumferential direction.

In the drain plug device having such a configuration, depending on how the drain plug 230 is screwed into the drain port member 210, the drain plug 230 is placed in a closed position as shown in FIG. The first opening position where the drain plug 230 is opened at the intermediate height (see FIG. 10), the second opening position where the drain plug 230 is opened at the highest height (the fully opened position) (see FIG. 10). 11))).
Therefore, the drain plug device can easily open and close the drain port 11 and change the drain flow rate with a simple configuration.

  Moreover, in this drain plug device, since the thread engraved on the inner peripheral surface of the drain outlet main body 211 and the thread engraved on the outer peripheral surface of the drain plug main body 233 are screwed together, water is drained. At this time, the drainage plug 230 does not move and the drainage flow rate does not change due to the influence of water pressure or the like. In other words, in this drain plug device, one of the thread engraved on the inner peripheral surface of the drain outlet main body 211 and the thread engraved on the outer peripheral surface of the drain plug main body 233 is a locking portion, and the other is engaged. It corresponds to a stop and constitutes a holding mechanism.

<Example 4>
As shown in FIGS. 12 to 15, in the drain plug device of the fourth embodiment, the stepped groove 315 is formed on the inner peripheral surface of the drain port body 311 of the drain port member 310 without being threaded, and the drain plug The third embodiment is different from the third embodiment in that protrusions 335 are formed at two locations on the lower end of the outer peripheral surface without being threaded on the outer peripheral surface of the drain plug main body 333. Other configurations are the same as those of the third embodiment, and the same configurations are denoted by the same reference numerals and detailed description thereof is omitted.

  In this drain plug device, a two-step step-like groove portion 315 in which the central axis of the drain port body 311 is symmetric is formed at two opposing positions on the inner peripheral surface of the drain port body 311 of the drain port member 310. . That is, the groove portion 315 includes a first vertical groove portion 315A, a first horizontal groove portion 315B, a second vertical groove portion 315C, a second horizontal groove portion 315D, and a third vertical groove portion 315E. The first vertical groove portion 315A has an upper end that opens upward at the upper end of the drain port body 311 and extends in the vertical direction. The first horizontal groove portion 315B extends in the horizontal direction continuously to the lower end of the first vertical groove portion 315A. The first horizontal groove portion 315B is a first locking portion that is locked by the convex portion 335 formed with the drain plug main body 333. The second vertical groove portion 315C is continuous with the end portion of the first horizontal groove portion 315B opposite to the end portion where the first vertical groove portion 315A is continuous, and extends in the vertical direction. The second horizontal groove 315D extends in the horizontal direction continuously to the lower end of the second vertical groove 315C. The second horizontal groove portion 315D is a second locking portion to which the convex portion 335 formed with the drain plug main body 333 is locked. The third vertical groove 315E extends in the vertical direction continuously to the end opposite to the end where the second vertical groove 315C of the second horizontal groove 315D is continuous, and the lower end is below the lower end of the drain port body 311. Is open. Further, in this drain plug device, convex portions 335 to be inserted into the groove portions 315 of the drain port body 311 are formed at two positions on the lower end of the outer peripheral surface with the central axis of the drain plug body 333 symmetrical. The convex portion 335 is a locked portion that is locked to the first horizontal groove portion 315B and the second horizontal groove portion 315D.

  In the drain plug device having such a configuration, the convex portion 335 of the drain plug main body 333 is inserted from the upper end of the groove portion 315 of the drain outlet main body 311, and the convex portion 335 of the drain plug main body 333 is inserted into the first portion as shown in FIG. When positioned in the three vertical grooves 315E, the drain plug 330 can be in the closed position. Further, as shown in FIG. 14, when the convex portion 335 of the drain plug body 333 is positioned in the second horizontal groove portion 315D (second locking portion), the drain plug 330 is positioned at an intermediate height and opened. 1 is held in the open position. Further, as shown in FIG. 15, when the convex portion 335 of the drain plug body 333 is positioned in the first horizontal groove portion 315B (first locking portion), the drain plug 330 is positioned at the highest height and opened. The second open position (fully open position) is maintained. That is, the drain plug device includes a convex portion 335 (locked portion) of the drain plug body 333, a first horizontal groove portion 315B (first lock portion) and a second horizontal groove portion 315D (second block) of the drain port body 3. (Holding portion) constitutes a holding mechanism.

  Accordingly, this drain plug device has a simple configuration, and the drain port 11 is opened and closed by moving the convex portion 335 of the drain plug body 333 to the first horizontal groove portion 315B or the second horizontal groove portion 315D of the drain port body 311. In addition, it is possible to easily change the drainage flow rate.

The present invention is not limited to the first to fourth embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Embodiments 1 and 2, the holding mechanism is incorporated in the operation unit, but the holding mechanism may be incorporated in the middle of the drain plug or the wire.
(2) In Examples 1, 2, and 4, the drain plug is opened in two stages, the first opening position and the second opening position, but the drain plug may be provided with three or more opening positions with different drainage flow rates. .
(3) In Examples 1 to 4, the drain plug device is attached to the bathtub, but the drain plug device may be attached to a basin or the like.

DESCRIPTION OF SYMBOLS 10,210 ... Drain port member 11 ... Drain port 30, 130, 230 ... Drain plug 50 ... Wire (cord)
70 ... operation part 73, 74, 75 ... holding mechanism (73 ... knock bar, 74 ... rotor, 75 ... locking member)
315B, 315D ... locking part (315B ... first horizontal groove part (first locking part), 315D ... second horizontal groove part (second locking part))
335 ... convex portion (locked portion)

Claims (3)

A drain member forming the drain; and
A drain plug that moves between a closed position that closes the drain port, and a plurality of open positions that open the drain port and have different amounts of drainage per unit time;
A holding mechanism for holding the drain plug at a plurality of the open positions;
A drain plug device characterized by comprising: A cord that moves the drain plug by moving back and forth in the axial direction;
An operation unit for moving the cord-like object in the axial direction; and
With
2. The drain plug device according to claim 1, wherein the holding mechanism is incorporated between the operation unit and the drain plug.   The drainage plug according to claim 1, wherein the holding mechanism is configured by a locking portion provided in one of the drain port member or the drainage plug and a locked portion provided in the other. apparatus.