JP5900724B2 - Drain plug device - Google Patents

Description

  Aspects of the present invention generally relate to a drain plug device.

  For example, there is a drain plug device called a pop-up type. The pop-up drain plug device is provided with a release wire that connects, for example, an operation unit installed on a flange of a bathtub and a plug lid. Then, the user can remotely open and close the drain port by remotely operating the plug lid with the manual button of the operation unit.

  Here, there is a drain plug device that holds the push button in a pushed state when the push button is pushed in and releases the hold of the push button when the release button is pushed (Patent Document 1). However, in the drain plug device described in Patent Document 1, a push button that is pressed when the plug lid is opened and a release button that is pressed when the plug lid is closed are provided separately. For this reason, it is necessary to use different buttons when opening and closing the drain, and there is a problem that the operation becomes complicated. Further, when the stopper lid is raised, that is, when the drain opening is open, for example, when the user steps on the stopper lid, the drain stopper device may be damaged.

  On the other hand, there is a remote-operated drain plug device that can raise and lower the plug lid each time the operation unit is pushed and keep the drain port open (Patent Document 2). However, in the remote-operated drain plug device described in Patent Document 2, as with the drain plug device described in Patent Document 1, for example, when the user steps on the plug lid when the plug lid is raised, There is a risk of damage to the remotely operated drain plug device.

  On the other hand, as a result of the inventor's investigation, by synchronizing the lifted state of the operation button and the lifted state of the plug lid, for example, even when the user steps on the plug lid, the drain plug device is damaged. It turns out that it can be prevented. More specifically, it has been found that the drain plug device can be prevented from being damaged by reversing the direction of the transmission force by the operation button and transmitting the reversed transmission force to the plug lid. In this case, the raised state of the plug lid is held by the biasing force of biasing means such as a spring. For this reason, the urging means needs to have an urging force that can prevent the stopper lid from being lowered due to the force of the water pressure during drainage or the pulling force during drainage.

  However, when an urging means having a larger urging force is used, the force required for operating the operation button becomes large. Therefore, there is room for improvement in that the burden on the user when operating the operation buttons increases.

JP-A-7-197503 JP 2004-278164 A

  The present invention has been made based on recognition of such a problem, and an object of the present invention is to provide a drain plug device that can reduce the force required to operate an operation button or can reliably drain water.

  1st invention has a plug lid, the drain plug part which opens and closes the drain outlet of a bathtub by raising / lowering the said plug lid, the operation part which has a push button, and can input operation which pushes the push button, A transmission unit that transmits the operation of the push button to the plug lid to raise and lower the plug lid; a biasing unit that biases the plug lid in a direction that raises the plug lid and a direction that raises the push button; A locking mechanism for controlling the position of the push button, and the transmission unit includes an amplification unit that amplifies the force pushing the push button and transmits the amplified force to the plug lid, The amplified force is transmitted while opposing, and the plug lid is lowered, and the lock mechanism can hold the state where the plug lid is lowered and the drain port is closed and the push button is lowered. It is the drain plug device characterized by this.

  According to this drain plug device, the elevation state of the lid lid and the elevation state of the push button are synchronized. Therefore, the user can grasp | ascertain intuitively the opening / closing state of a drain outlet from the raising / lowering state of a push button, without looking in the inside of a bathtub. That is, the open / closed state of the drain outlet can be communicated to the user in an easily understandable manner.

  Further, by increasing the urging force of the urging unit, it is possible to maintain the drain port opening state, that is, the plug lid ascending state during drainage. In other words, since the amplifying unit amplifies the force generated by the downward movement of the push button and transmits the amplified force to the plug lid, the force required to operate the push button can be reduced even if the urging force of the urging unit is increased. . Therefore, the burden on the user when operating the push button can be reduced. Thereby, it can suppress that a drain outlet becomes a plugged state with the momentum of the water flow at the time of drainage, and can perform drainage more reliably.

  Further, in a second invention according to the first invention, the transmission part is provided in the middle of the transmission member, a transmission member that interlocks the lifting operation of the push button and the lifting operation of the plug lid, An operation reversing unit that reverses the direction of the force of pushing the push button and transmits the force to the plug lid, and the transmission member is a first transmission disposed between the push button and the operation reversing unit. A member, and a second transmission member disposed between the operation reversing part and the stopper lid, the operation reversing part being rotatable about an axis, and the rotating body. And a first connection part to which the first transmission member is connected, and a side opposite to the first connection part when viewed from the shaft, the rotating body, and the second transmission And a second connecting portion to which a member is connected, and the distance between the shaft and the first connecting portion is: Longer than the distance between the serial shaft and the second connecting portion is a drain plug device according to claim.

  According to this drain plug device, by using a rotating body having a simpler structure, the force generated by the downward movement of the push button is amplified and transmitted to the plug lid. Therefore, the number of parts and cost can be reduced.

  In addition, since the distance between the axis of the rotating body and the first connecting portion is longer than the distance between the axis of the rotating body and the second connecting portion, the lift distance (stroke) of the push button is It is longer than the lift distance (stroke) of the lid. Therefore, when the stopper lid is lifted, the lift distance of the push button is relatively long. Thereby, it becomes easy for the user to visually recognize the raised state of the push button, and the open / closed state of the drain port can be communicated to the user more easily.

  In a third aspect based on the first aspect, the transmission portion is provided in the middle of the transmission member, a transmission member that interlocks the lifting operation of the push button and the lifting operation of the plug lid, An operation reversing unit that reverses the direction of the force of pushing the push button and transmits the force to the plug lid, and the transmission member is a first transmission disposed between the push button and the operation reversing unit. And a second transmission member disposed between the operation reversing unit and the plug lid, wherein the operation reversing unit and the amplification unit are engaged with the first transmission member. A drain plug device having a gear and a second gear larger than the first gear and meshing with the first gear and the second transmission member.

  According to this drain plug device, the force generated by the downward movement of the push button is amplified and transmitted to the plug lid with a simpler structure using a plurality of gears of different sizes. Therefore, the number of parts and cost can be reduced.

  In addition, since the force due to the downward movement of the push button is transmitted from the first gear of the small gear through the second gear of the large gear, the lifting distance (stroke) of the push button is It is longer than the lifting distance (stroke). Therefore, when the stopper lid is lifted, the lift distance of the push button is relatively long. Thereby, it becomes easy for the user to visually recognize the raised state of the push button, and the open / closed state of the drain port can be communicated to the user more easily.

  According to a fourth aspect of the present invention, in the first aspect, the transmission unit is provided in the middle of the transmission member, a transmission member that interlocks the lifting operation of the push button and the lifting operation of the plug lid, An operation reversing unit that reverses the direction of the force of pushing the push button and transmits the force to the plug lid, and the operation reversing unit and the amplifying unit include a first sensor that detects an operation of pushing the push button, A second sensor for detecting a state in which the plug lid is raised and the drain opening is opened, an auxiliary force supply unit for supplying a force for assisting a lowering operation of the plug lid to the transmission member, and the second sensor In the case where the sensor detects that the drain outlet is open, when the first sensor detects an operation of pushing the push button, the auxiliary force supply unit is operated to assist the pushing force of the push button. Force to push the push button A control unit for executing control to transmit amplify and to the plug cap, a discharge valve apparatus characterized by having a.

  According to this drain plug device, the auxiliary force supply unit amplifies the force generated by the downward movement of the push button and transmits it to the plug lid. Therefore, even if the urging force of the urging unit is increased, it is necessary for the operation of the push button. Power can be reduced. Therefore, the burden on the user when operating the push button can be reduced.

  According to the aspect of the present invention, there is provided a drain plug device that can reduce the force required to operate the operation button or can reliably perform drainage.

It is a schematic diagram showing the drain plug device concerning an embodiment of the invention. It is a schematic diagram showing the drain plug device concerning an embodiment of the invention. It is a perspective schematic diagram showing the bathtub in which the drain plug device concerning this embodiment was installed. It is an exploded schematic diagram showing the internal structure of the casing of this embodiment. It is a cross-sectional schematic diagram for demonstrating the connection structure of a wire. It is a cross-sectional schematic diagram for demonstrating the connection structure of a wire. It is a cross-sectional schematic diagram in cut surface AA represented to FIG. It is a plane schematic diagram for demonstrating the connection structure of a release wire. It is a perspective schematic diagram showing the fixation structure of a release wire. It is a perspective schematic diagram showing the wire guide of this embodiment. It is a cross-sectional schematic diagram in the cut surface BB represented to FIG. It is a perspective schematic diagram showing the state which the inner wire fitted in the 2nd groove | channel of the rotary body. It is a perspective schematic diagram showing the rotary body of this embodiment. It is a perspective schematic diagram showing the guide recessed part formed in the casing of this embodiment. It is a schematic diagram for demonstrating operation | movement of the locking mechanism of this embodiment. It is a schematic diagram for demonstrating operation | movement of the locking mechanism of this embodiment. It is a schematic diagram for demonstrating operation | movement of the locking mechanism of this embodiment. It is a schematic diagram for demonstrating operation | movement of the locking mechanism of this embodiment. It is a plane schematic diagram for demonstrating the relative movement of the lock pin with respect to a cam groove. It is a schematic diagram showing the drain plug device concerning other embodiments of the present invention. It is a block diagram showing the principal part structure of the drain plug apparatus concerning further another embodiment of this invention. It is a schematic diagram showing the drain plug device concerning this embodiment. It is a schematic diagram which illustrates the auxiliary power supply part of this embodiment. It is a schematic diagram which illustrates the auxiliary power supply part of this embodiment.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
1 and 2 are schematic views showing a drain plug device according to an embodiment of the present invention. FIG. 3 is a schematic perspective view showing a bathtub in which the drain plug device according to the present embodiment is installed.
FIG. 1 is a schematic diagram showing a drain plug device in an opened state. FIG. 2 is a schematic diagram showing the drain plug device in a closed state.

  The drain plug device according to the present embodiment includes an operation unit 100, a casing 200, and a drain plug unit 300. As shown in FIG. 3, the drain plug device according to the present embodiment is attached to the bathtub 500 and used.

  The operation unit 100 includes a push button (operation button) 110 and a case 120, and is attached to a flange 510 formed in the upper part of the bathtub 500. The user can press the push button 110. That is, the operation unit 100 can input an operation of pressing the push button 110. The drain plug part 300 has a plug lid 310 and a case 320, and is attached to a bottom part 520 formed in the lower part of the bathtub 500. The operation unit 100 may be attached to a counter (not shown) provided in the vicinity of the bathtub 500. The user can raise and lower the plug lid 310 each time the push button 110 is pressed. That is, the user can remotely operate the plug lid 310 by operating the push button 110.

  The casing 200 has a pipe 203 extending upward, and is connected to the operation unit 100 at the upper end of the pipe 203. The casing 200 houses a transmission unit, an urging unit, and a lock mechanism that will be described in detail later. The transmission unit includes a transmission member, an operation reversal unit, and an amplification unit, and can transmit the operation of the push button 110 by pressing the push button 110 to the plug lid 310. More specifically, the transmission member includes a wire (first transmission member) 211 disposed between the push button 110 and the operation reversing unit, and a release disposed between the operation reversing unit and the plug lid 310. A wire (second transmission member) 212. As shown in FIGS. 1 and 2, the casing 200 accommodates a part of the wire 211 and the release wire 212 instead of the whole.

  The release wire 212 includes an outer tube 212a and an inner wire 212b. The inner wire 212b is provided so as to be movable in the outer tube 212a. The wire 211 and the release wire 212 are built in a guide tube 530 connected to the flange 510 and the bottom portion 520 of the bathtub 500. The wire 211 is built in the tube 203 of the casing 200. Note that the first transmission member 211 may be a release wire, like the second transmission member 212.

The plug lid 310 of the drain plug portion 300 is provided on a drain port fitting (not shown). A drain outlet fitting (not shown) is provided in a drain outlet 521 formed in the bottom 520 of the bathtub 500. The plug lid 310 can be switched between an open state and a closed state of the drain port 521 by an elevating operation.
The case 320 of the drain plug portion 300 is provided below the plug lid 310. The case 320 has an outer case 321 and an inner case 322. The outer case 321 and the inner case 322 are fitted to each other and have through holes in the upper end surface and the lower end surface, respectively.

  Further, the drain plug portion 300 has a pin 323. The pin 323 is provided in a state that can be moved up and down inside the case 320. The upper part of the pin 323 passes through a through hole formed in the upper end surface of the outer case 321 and is exposed to the outside of the case 320. On the other hand, the inner wire 212b of the release wire 212 is fixed to the lower portion of the pin 323 through the through hole of the inner case 322. The outer tube 212 a of the release wire 212 is fixed to the inner case 322.

  In the drain plug device according to the present embodiment, as shown in FIG. 1, the push button 110 is lifted from the case 120 of the operation unit 100 when the drain port 521 is opened (the lid lid 310 is lifted). It is in a state of protruding upward. In other words, the side surface of the push button 110 is exposed upward from the case 120 of the operation unit 100.

  When the push button 110 is pushed and moved downward from this state, as shown in FIG. 2, the push button 110 is lowered, that is, is housed in the case 120 of the operation unit 100. In other words, the side surface of the push button 110 is hidden by the case 120 of the operation unit 100. The upper surface of the push button 110 and the upper surface of the case 120 of the operation unit 100 are substantially the same surface. At this time, the plug lid 310 is lowered and closes the drain port 521. That is, the drain port 521 is in a plugged state. Subsequently, when the push button 110 moves upward from this state, the push button 110 transitions to the state described above with reference to FIG.

  Thus, in the drain plug device according to the present embodiment, the lifted state of the plug lid 310 and the lifted state of the push button 110 are synchronized. That is, when the plug lid 310 is in the raised state, the push button 110 is in the raised state. On the other hand, when the plug lid 310 is in the lowered state, the push button 110 is in the lowered state. The wire 211 and the release wire 212 transmit a force for pressing the push button 110 to the plug lid 310, and the lifting operation of the push button 110 and the lifting operation of the plug lid 310 can be linked.

Next, the internal structure of the casing 200 of the present embodiment will be described with reference to the drawings.
FIG. 4 is an exploded schematic view showing the internal structure of the casing of the present embodiment.

  Inside the casing 200 of the present embodiment, a packing 220, a wire guide 230, a rotating body (amplifying unit, operation reversing unit) 340, and an urging unit 250 are housed. In the packing 220, for example, water (including heated hot water) that has entered from a gap between the push button 110 and the case 120 of the operation unit 100 enters the wire guide 230, the rotating body 240, and the biasing unit 250. To prevent that. The urging unit 250 is a spring called, for example, a “torsion coil spring”. The urging portion 250 is engaged with the casing 200 and the rotating body 240 and urges the plug lid 310 in a direction that raises the plug lid 310, that is, a direction that raises the push button 110.

  The rotating body 240 has a lock mechanism that controls the positions of the plug lid 310 and the push button 110. That is, in the drain plug device according to the present embodiment, the operation reversing unit and the lock mechanism are housed and integrated in one casing 200. According to this, it is possible to reduce the number of parts and the cost. The rotating body 240 has a first groove 241 and a second groove 242 formed on the outer periphery. The wire guide 230 and the rotating body 240 will be described in detail later.

  The packing 220, the wire guide 230, the rotating body 240, and the urging unit 250 are covered with a lid 270 attached to the casing 200. A female screw 201 is formed on the inner peripheral surface of the casing 200. On the other hand, a male screw 711 is formed on the outer peripheral surface of the lid 270. The casing 200 and the lid 270 can be screwed together to conceal the packing 220, the wire guide 230, the rotating body 240, and the urging portion 250.

  Note that the method of joining the casing 200 and the lid 270 is not limited to screwing, but may be welding or adhesion. When the casing 200 and the lid 270 are welded or bonded, it is not necessary to provide the packing 220. Further, unlike the casing 200 shown in FIG. 4, it is not necessary to provide a step portion on the outer shape of the casing 200. Therefore, the number of parts can be reduced and the structure can be simplified. In addition, cost reduction can be achieved.

5 and 6 are schematic cross-sectional views for explaining a wire connecting structure.
FIG. 7 is a schematic cross-sectional view taken along the cutting plane AA shown in FIG.
FIG. 5 shows a case where the push button 110 is in the lowered state. FIG. 6 shows a state where the push button 110 is pushed further downward from the lowered state. 5 and 6, the lid 270, the packing 220, and the wire guide 230 are omitted.

  The wire 211 includes a first wire 211a and a second wire 211b. One end of the first wire 211 a is fixed to a coupling body 130 having one end connected to the push button 110. The other end of the first wire 211a is fixed to one end of the second wire 211b. The other end of the second wire 211b is appropriately fixed to the first groove 241 (see FIG. 4) of the rotating body 240. As shown in FIG. 7, the pipe 203 of the casing 200 has a double pipe structure. The wire 211 can move inside the inner tube 203 b of the tube 203 of the casing 200. On the other hand, the coupling body 130 can move in the space between the outer tube 203 a and the inner tube 203 b of the tube 203 of the casing 200.

  The rotating body 240 has a shaft 243 (see FIG. 13). On the other hand, the casing 200 has a bearing portion 205. When the shaft 243 of the rotating body 240 is engaged with the bearing portion 205 of the casing 200, the rotating body 240 can rotate around the shaft 243.

  When the push button 110 is pushed and moved in the direction of the arrow A1 shown in FIG. 6, the wire 211 connected to the push button 110 via the connecting body 130 moves downward, that is, toward the rotating body 240. And the force which pushes the push button 110 is transmitted to the rotary body 240 via the connection body 130 and the wire 211. FIG. Then, the rotator 240 rotates about the shaft 243 in the direction of the arrow A2 shown in FIG. At this time, as described above with reference to FIG. 4, the urging unit 250 is urging in the direction in which the stopper lid 310 is raised, that is, in the direction in which the push button 110 is raised. It rotates against the urging force.

  On the other hand, when the push button 110 moves in the direction opposite to the arrow A <b> 1 shown in FIG. 6, the wire 211 moves upward, that is, the side opposite to the rotating body 240 by the urging force of the urging unit 250. Then, the rotating body 240 rotates in the direction opposite to the arrow A <b> 2 shown in FIG. 6 about the shaft 243 by the urging force of the urging unit 250.

  The rigidity of the first wire 211a is higher than the rigidity of the second wire 211b. The length of the first wire 211a is longer than the length of the second wire 211b. According to this, even when the distance between the push button 110 and the rotating body 240 is relatively long, the wire 211 can more reliably transmit the force pushing the push button 110 to the rotating body 240. Further, the second wire 211b is fixed in a state of being fitted in the first groove 241 of the rotating body 240. Therefore, it is possible to suppress the second wire 211b from coming off from the first groove 241 of the rotating body 240.

  As described above with reference to FIG. 4, for example, water that has entered from the gap between the push button 110 of the operation unit 100 and the case 120 is the space between the outer tube 203 a and the inner tube 203 b of the tube 203 of the casing 200. Flowing. And it flows through the guide cylinder 530 (refer FIG. 3), and is guide | induced to the existing drainage pipe.

FIG. 8 is a schematic plan view for explaining a release wire coupling structure.
FIG. 9 is a schematic perspective view showing a release wire fixing structure.
FIG. 10 is a schematic perspective view showing the wire guide of this embodiment.
FIG. 11 is a schematic cross-sectional view taken along a cutting plane BB shown in FIG.
FIG. 12 is a schematic perspective view showing a state in which the inner wire is fitted in the second groove of the rotating body.
FIG. 13 is a schematic perspective view showing the rotating body of this embodiment.
In FIG. 8, the lid 270 and the packing 220 are omitted.

  The wire guide 230 of this embodiment is fixed to the casing 200. More specifically, as shown in FIG. 10, the wire guide 230 has legs 233. On the other hand, as shown in FIGS. 5 and 8, the casing 200 has a leg receiving portion 207. The wire guide 230 is fixed to the casing 200 by the leg portion 233 of the wire guide 230 being engaged with the leg receiving portion 207 of the casing 200. That is, unlike the rotating body 240, the wire guide 230 does not rotate with respect to the casing 200. Note that the numbers of the leg portions 233 and the leg receiving portions 207 are not particularly limited.

  As shown in FIG. 9, the release wire 212 has a protrusion 212c provided on a part of the outer tube 212a. On the other hand, as shown in FIGS. 9 and 10, the wire guide 230 has a hole 231. The release wire 212 can be fixed to the wire guide 230 by fitting the protrusion 212c of the release wire 212 with the hole 231 of the wire guide 230 as indicated by an arrow A3 shown in FIG. As described above, the wire guide 230 is fixed to the casing 200. Therefore, the outer tube 212 a is fixed to the casing 200 via the wire guide 230.

One end of the inner wire 212b is appropriately fixed to the second groove 242 (see FIG. 4) of the rotating body 240. At this time, as shown in FIGS. 11 and 12, the inner wire 212 b is fixed in a state of being fitted in the second groove 242 of the rotating body 240. Further, as shown in FIGS. 8 and 11, the inner wire 212 b is covered with a guide wall 235 formed on the wire guide 230 outside the second groove 242 of the rotating body 240. Therefore, it is possible to more reliably suppress the inner wire 212b from coming off from the second groove 242 of the rotating body 240.
As described above with reference to FIGS. 1 and 2, the other end of the inner wire 212 b is fixed to the pin 323 of the drain plug portion 300.

  As described above with reference to FIG. 6, when the push button 110 is pushed and moves in the direction of the arrow A1 illustrated in FIG. 8, the rotating body 240 rotates about the shaft 243 in the direction of the arrow A2 illustrated in FIG. To do. Then, the inner wire 212b fixed to the second groove 242 of the rotating body 240 moves in the direction of arrow A3 shown in FIG. Then, the pin 323 of the drain plug portion 300 fixed to the other end of the inner wire 212b is lowered. According to this, the plug lid 310 supported by the pin 323 loses its support and descends due to its own weight, thereby closing the drain port 521.

  On the other hand, when the push button 110 moves in the direction opposite to the arrow A1 shown in FIG. 8, the rotating body 240 rotates about the shaft 243 in the direction opposite to the arrow A2 shown in FIG. Then, the inner wire 212b fixed to the second groove 242 of the rotating body 240 moves in the direction opposite to the arrow A3 shown in FIG. If it does so, the pin 323 of the drain plug part 300 fixed to the other end of the inner wire 212b will raise. According to this, the plug lid 310 is supported and lifted by the pin 323 to bring the drain port 521 into the plug opened state.

  In this way, the lifted state of the plug lid 310 and the lifted state of the push button 110 can be synchronized. In other words, the raising / lowering operation of the push button 110 and the raising / lowering operation of the plug lid 310 can be interlocked. That is, the rotating body 240 has a function as an operation reversing unit that reverses the direction of the driving force generated by the operation of the push button 110 and transmits the direction to the plug lid 310.

  According to this, the user can intuitively grasp the open / close state of the drain port from the lifted state of the push button 110 without looking into the inside of the bathtub 500. That is, according to the drain plug device according to the present embodiment, the open / closed state of the drain port can be easily communicated to the user.

  Further, when the user forcibly pushes down the plug lid 310 by, for example, stepping on the plug lid 310 with his / her foot while the drain outlet 521 is in the plugged state, the driving force due to the operation of the plug lid 310 is changed to the inner via the pin 323. It is transmitted to the wire 212b. Then, the inner wire 212b moves in the direction of the arrow A3 shown in FIG. Then, the rotating body 240 rotates in the direction of the arrow A <b> 2 shown in FIG. 8 while resisting the urging force of the urging unit 250. Then, the wire 211 and the push button 110 are lowered.

  That is, the push button 110 can be freely lowered while the drain outlet 521 is in the open state. Therefore, even if the user forcibly pushes down the plug lid 310 by, for example, stepping on the plug lid 310 with a foot while the drain port 521 is open, the drain plug device can be prevented from being damaged.

  As shown in FIGS. 4 and 13, the second groove 242 of the rotating body 240 is provided on the side opposite to the first groove 241 when viewed from the shaft 243 of the rotating body 240. Therefore, as shown in FIG. 8, the connecting portion (first connecting portion) 211 d between the inner wire 212 b of the release wire 212 and the second groove 242 of the rotating body 240 is separated from the shaft 243 of the rotating body 240. Thus, the connection portion (second connection portion) 212d between the wire 211 and the first groove 241 of the rotating body 240 is located on the opposite side.

  A distance D1 between the first connecting portion 211d and the shaft 243 of the rotating body 240 is longer than a distance D2 between the second connecting portion 212d and the shaft 243 of the rotating body 240. Therefore, due to the lever principle or the moment of force, the force transmitted by the inner wire 212b of the release wire 212 is larger than the force transmitted by the wire 211. In other words, the force transmitted by the wire 211 is amplified by the rotating body 240 and transmitted by the inner wire 212 b of the release wire 212. That is, the rotating body 240 has a function as an amplifying unit that amplifies the force pushing the push button 110 and transmits the amplified force to the plug lid 310.

  Here, the open state of the drain port 521, that is, the raised state of the plug lid 310 is maintained with the biasing force of the biasing portion 250 as one element or factor. That is, with the force that the urging unit 250 urges the rotating body 240 in the direction opposite to the arrow A2 shown in FIG. Is maintained. Therefore, when the urging force of the urging unit 250 is relatively small, the raised state of the plug lid 310 may not be maintained due to the force due to the water pressure during drainage or the pull-in force during drainage.

  On the other hand, according to the drain plug device according to the present embodiment, the urging force of the urging portion 250 is further increased, so that the drain port 521 is kept open, that is, the plug lid 310 is raised when draining. can do. That is, since the rotating body 240 functions as an amplifying unit that amplifies the force pushing the push button 110 and transmits it to the plug lid 310, the push button 110 is pushed even if the urging force of the urging unit 250 is increased. The required force can be reduced. Therefore, the burden on the user when operating the push button 110 can be reduced. Thereby, it can suppress that the drain outlet 521 becomes a plugged state with the momentum of the water flow at the time of drainage, and can perform drainage more reliably.

  In addition, by using the rotating body 240 having a simpler structure, the force for pushing the push button 110 is amplified and transmitted to the plug lid 310. Therefore, the number of parts and cost can be reduced.

  Furthermore, the distance D1 between the first connecting portion 211d and the shaft 243 of the rotating body 240 is longer than the distance D2 between the second connecting portion 212d and the shaft 243 of the rotating body 240. The lifting distance (stroke) of the push button 110 is longer than the lifting distance (stroke) of the plug lid 310. For this reason, the lift distance of the push button 110 when the stopper lid 310 is raised is relatively long (see FIGS. 1 and 8). Thereby, it becomes easy for the user to visually recognize the raised state of the push button 110, and the open / closed state of the drain port can be communicated to the user in a more understandable manner.

Next, the locking mechanism of this embodiment will be described with reference to the drawings.
FIG. 14 is a schematic perspective view showing guide recesses formed in the casing of the present embodiment. A guide recess 209 is provided on the bottom 208 of the casing 200 (see FIGS. 4 and 7). The guide recess 209 extends in the radial direction (see FIG. 15). A lock pin 260 is provided inside the guide recess 209. The lock pin 260 has a base 261 and a projection 263 protruding from the base 261, and can move in the directions of arrows A4 and A5 shown in FIG. That is, the lock pin 260 can move relative to the shaft 243 (see FIG. 13) of the rotating body 240 or the bearing portion 205 (see FIG. 5) of the casing 200.

As shown in FIG. 13, the rotating body 240 has a cam groove 245 in which the convex portion 263 of the lock pin 260 can move. When the shaft 243 of the rotating body 240 is engaged with the bearing portion 205 of the casing 200, the bottom surface 245 e of the cam groove 245 faces the top surface 263 a of the convex portion 263 of the lock pin 260.
As described above, the lock mechanism of this embodiment includes the guide recess 209, the lock pin 260, and the cam groove 245.

  The cam groove 245 includes a first corner portion 245a, a second corner portion 245b, a third corner portion 245c, and a fourth corner portion 245d. The diameters of the first to fourth corner portions 245a, 245b, 245c, and 245d are substantially the same as or larger than the diameter of the convex portion 263 of the lock pin 260. The cam groove 245 can hold the lock pin 260 in each of the first to fourth corner portions 245a, 245b, 245c, and 245d. As shown in FIG. 13, when viewed perpendicular to the bottom surface 245e of the cam groove 245, the cam groove 245 has a substantially heart shape.

15 to 18 are schematic views for explaining the operation of the locking mechanism of the present embodiment.
FIG. 19 is a schematic plan view for explaining the relative movement of the lock pin with respect to the cam groove.
FIG. 15A, FIG. 16A, FIG. 17A, and FIG. 18A are schematic cross-sectional views showing the lifted state of the push button.
FIG. 15B, FIG. 16B, FIG. 17B, and FIG. 18B are schematic plan views showing the positions of the rotating body and the lock pin.
Moreover, FIG.15 (c), FIG.16 (c), FIG.17 (c), and FIG.18 (c) are cross-sectional schematic diagrams showing the raising / lowering state of a stopper lid.
Also, in FIG. 15B, FIG. 16B, FIG. 17B, and FIG. 18B, the lid 270, the packing 220, and the wire guide 230 are omitted.
FIG. 19 is a schematic plan view when the cam groove 245 is viewed from the lock pin 260 side.

  As shown in FIGS. 15A and 15C, when the push button 110 is in the raised state, the plug lid 310 is supported by the pin 323 of the drain plug portion 300 and is in the raised state (drain port 521). Open state). At this time, as shown in FIG. 15B and FIG. 19, the lock pin 260 is positioned at the first corner portion 245 a of the cam groove 245. That is, when the lock pin 260 is positioned (reached) at the first corner portion 245a of the cam groove 245, the push button 110 is raised and the plug lid 310 is raised (the drain port 521 is opened). (First locked state).

  In this state, when the user forcibly pushes down the plug lid 310 by, for example, stepping on the plug lid 310 with a foot, the driving force due to the operation of the plug lid 310 is transmitted to the inner wire 212b via the pin 323. Is done. Then, the inner wire 212b releases the first locked state of the locking mechanism, and rotates the rotating body 240 in the direction of the arrow A12 shown in FIG. 15B while opposing the urging force of the urging portion 250. Move. Then, the wire 211 and the push button 110 are lowered. Thereby, even if an excessive force is applied by stepping on the plug lid 310, the drain plug device can be prevented from being damaged.

  Subsequently, when the user pushes the push button 110 in the direction of the arrow A <b> 11 shown in FIG. 15A, the driving force due to the lowering operation of the push button 110 is transmitted to the rotating body 240 by the wire 211. Therefore, the rotating body 240 rotates in the direction of the arrow A12 shown in FIG. 15B while opposing the urging force of the urging portion 250. Then, the lock pin 260 moves in the cam groove 245 as indicated by an arrow A21 shown in FIG. 19 while moving in the guide recess 209. That is, the first locked state is released. Further, the pin 323 of the drain plug portion 300 is lowered.

  16B and FIG. 19, when the lock pin 260 reaches the second corner portion 245b of the cam groove 245, the lowering operation of the push button 110 and the pin 323 of the drain plug portion 300 is stopped. To do. That is, when the lock pin 260 reaches the second corner portion 245b of the cam groove 245, the push button 110 and the pin 323 of the drain plug portion 300 reach the lowest end position.

  At this time, as shown in FIG. 16C, the pin 323 of the drain plug portion 300 is separated from the plug lid 310 and does not support the plug lid 310. Therefore, the plug lid 310 loses support by the pin 323 of the drain plug portion 300 and descends. As a result, the drain outlet 521 is closed.

  Subsequently, when the user releases his / her hand from the push button 110, the rotating body 240 rotates in the direction of the arrow A13 shown in FIG. Then, the driving force generated by the rotation of the rotating body 240 is transmitted to the push button 110 and the pin 323 of the drain plug portion 300 by the wire 211 and the release wire 212, respectively. Therefore, the push button 110 and the pin 323 of the drain plug part 300 are lifted from the lowest end position.

  At this time, the lock pin 260 moves inside the cam groove 245 as shown by an arrow A22 shown in FIG. 17B and FIG. 19, when the lock pin 260 reaches the third corner portion 245c of the cam groove 245 and is held, the push button 110 and the pin 323 of the drain plug portion 300 The ascending operation stops.

  At this time, as shown in FIG. 17C, the pin 323 of the drain plug portion 300 slightly rises from the lowermost position, but is separated from the plug lid 310 and does not support the plug lid 310. Therefore, the drain outlet 521 is held in a closed state. That is, as shown in FIGS. 17A to 17C, the lock pin 260 reaches the third corner portion 245c of the cam groove 245 and is held, so that the push button 110 is lowered and the plug is stopped. The lowered state of the lid 310 (the closed state of the drain port 521) is maintained (second locked state).

  Subsequently, when the user pushes the push button 110 in the direction of the arrow A14 shown in FIG. 17A, the driving force due to the downward movement of the push button 110 is transmitted to the rotating body 240 by the wire 211. Therefore, the rotating body 240 rotates in the direction of the arrow A15 shown in FIG. 17B while resisting the urging force of the urging portion 250. Then, the lock pin 260 moves in the cam groove 245 as indicated by an arrow A23 shown in FIG. 19 while moving in the guide recess 209. That is, the second locked state is released. Further, the pin 323 of the drain plug portion 300 is lowered.

  Then, as shown in FIGS. 18B and 19, when the lock pin 260 reaches the fourth corner portion 245 d of the cam groove 245, the lowering operation of the push button 110 and the pin 323 of the drain plug portion 300 is stopped. To do. That is, when the lock pin 260 reaches the fourth corner portion 245d of the cam groove 245, the push button 110 and the pin 323 of the drain plug portion 300 reach the lowest end position.

  At this time, as shown in FIG. 18C, the pin 323 of the drain plug portion 300 is separated from the plug lid 310 and does not support the plug lid 310. For this reason, the plug lid 310 remains in the closed state.

  Subsequently, when the user releases his / her hand from the push button 110, the rotating body 240 rotates in the direction of arrow A <b> 16 shown in FIG. 18B by the urging force of the urging unit 250. Then, the driving force generated by the rotation of the rotating body 240 is transmitted to the push button 110 and the pin 323 of the drain plug portion 300 by the wire 211 and the release wire 212, respectively. Therefore, the push button 110 and the pin 323 of the drain plug part 300 are lifted from the lowest end position.

  At this time, the lock pin 260 moves inside the cam groove 245 as indicated by an arrow A24 shown in FIG. 15B and FIG. 19, when the lock pin 260 reaches the first corner portion 245c of the cam groove 245 and is held, the push button 110 and the pin 323 of the drain plug portion 300 The ascending operation stops. That is, as shown in FIG. 15A to FIG. 15C, the lock pin 260 reaches the first corner portion 245a of the cam groove 245 and is held, so that the push button 110 is lowered and plugged. The lowered state of the lid 310 (the closed state of the drain port 521) is maintained (first locked state).

Next, another embodiment of the present invention will be described with reference to the drawings.
FIG. 20 is a schematic diagram showing a drain plug device according to another embodiment of the present invention.
The drain plug device according to the present embodiment includes an operation unit 100, a speed change mechanism (transmission unit) 400, and a drain plug unit 300. The operation unit 100 and the drain plug unit 300 are the same as the operation unit 100 and the drain plug unit 300 described above with reference to FIGS.

  The speed change mechanism 400 includes a first cable rack (first transmission member) 410, a first gear (amplifying unit, operation reversing unit) 420, a second gear (amplifying unit, operation reversing unit) 430, A second cable rack (second transmission member) 440. The diameter of the pitch circle of the first gear 420 is smaller than the diameter of the pitch circle of the second gear 430. In other words, the diameter of the pitch circle of the second gear 430 is larger than the diameter of the pitch circle of the first gear 420. That is, relatively, the first gear 420 is a small gear and the second gear 430 is a large gear.

  The first cable rack 410 and the second cable rack 440 are formed of a material such as a flexible resin. At least one side surface of the first cable rack 410 is provided with unevenness that engages with the first gear 420. At least one side surface of the second cable rack 440 is provided with unevenness that engages with the second gear 430.

  The first gear 420 meshes with the first cable rack 410 and the second gear 430. That is, the relationship between the first cable rack 410 and the first gear 420 is a so-called “rack and pinion” relationship. A connection body 130 (see FIG. 5) of the operation unit 100 is fixed to one end of the first cable rack 410.

  The second gear 430 meshes with the first gear 420 and the second cable rack 440. That is, the relationship between the second cable rack 440 and the second gear 430 is a so-called “rack and pinion” relationship. A pin 323 of the drain plug portion 300 is fixed to one end of the second cable rack 440.

  The transmission mechanism 400 shown in FIG. 20 has two gears, but the number of gears installed is not limited to this. Depending on the gear ratio, the number of gears installed can be changed as appropriate.

  When the push button 110 moves in the direction of the arrow A31 shown in FIG. 20, the first cable rack 410 connected to the push button 110 via the connector 130 moves in the direction of the arrow A32 shown in FIG. . Then, the first gear 420 that meshes with the first cable rack 410 rotates in the direction of arrow A33 shown in FIG. Then, the second gear 430 that meshes with the first gear 420 rotates in the direction of arrow A34 shown in FIG. Then, the second cable rack 440 that meshes with the second gear 430 moves in the direction of the arrow A35 shown in FIG.

  Then, the pin 323 of the drain plug portion 300 fixed to one end of the second cable rack 440 is lowered. According to this, the plug lid 310 supported by the pin 323 loses its support and descends due to its own weight, thereby closing the drain port 521.

  On the other hand, when the push button 110 moves in the direction opposite to the arrow A31 shown in FIG. 20, the first cable rack 410 moves in the direction opposite to the arrow A32 shown in FIG. Then, the first gear 420 rotates in the direction opposite to the arrow A33 shown in FIG. Then, the second gear 430 rotates in the direction opposite to the arrow A34 shown in FIG. Then, the second cable rack 440 moves in the direction opposite to the arrow A35 shown in FIG. According to this, the plug lid 310 is supported and lifted by the pin 323 to bring the drain port 521 into the plug opened state.

  According to this, the raising / lowering state of the plug lid 310 and the raising / lowering state of the push button 110 can be synchronized. In other words, the raising / lowering operation of the push button 110 and the raising / lowering operation of the plug lid 310 can be interlocked. That is, the first gear 420 and the second gear 430 function as an operation reversing unit that reverses the direction of the driving force generated by the operation of the push button 110 and transmits the direction to the plug lid 310.

  Thereby, the user can grasp | ascertain intuitively the opening / closing state of a drain outlet from the raising / lowering state of the push button 110, without looking in the inside of the bathtub 500. FIG. That is, according to the drain plug device according to the present embodiment, the open / closed state of the drain port can be easily communicated to the user.

  Further, since the driving force generated by the operation of the push button 110 is transmitted by the first gear (small gear) 420 and then transmitted by the second gear (large gear) 430, the second cable rack 440 transmits the driving force. The force to be transmitted is larger than the force transmitted by the first cable rack 410. In other words, the force transmitted by the first cable rack 440 is amplified by the first gear 420 and the second gear 430 and transmitted by the second cable rack 410. That is, the first gear 420 and the second gear 430 function as an amplifying unit that amplifies the driving force generated by the operation of the push button 110 and transmits the amplified driving force to the plug lid 310.

  Here, the speed change mechanism 400 is provided with an urging portion such as a spring (not shown) and a lock mechanism for controlling the positions of the plug lid 310 and the push button 110. An urging portion (not shown) urges the stopper lid 310 in a direction that raises the plug lid 310, that is, a direction that raises the push button 110. For this reason, the open state of the drain port 521, that is, the raised state of the plug lid 310 is maintained with the urging force of the urging unit (not shown) as one element or factor. Therefore, when the urging force of the urging unit (not shown) is relatively small, the raised state of the plug lid 310 may not be maintained due to the force of the water pressure during drainage or the pulling force during drainage.

  On the other hand, according to the drain plug device according to the present embodiment, by increasing the biasing force of the biasing portion (not shown), the drain port 521 is opened, that is, the plug lid 310 is lifted during drainage. Can be maintained. That is, since the first gear 420 and the second gear 430 function as an amplifying unit that amplifies the driving force generated by the operation of the push button 110 and transmits the amplified driving force to the plug lid 310, the urging force of the urging unit (not shown) is increased. Even so, the force required to operate the push button 110 can be reduced. Therefore, the burden on the user when operating the push button 110 can be reduced. Thereby, it can suppress that the drain outlet 521 becomes a plugged state with the momentum of the water flow at the time of drainage, and can perform drainage more reliably.

  Further, the driving force generated by the operation of the push button 110 is amplified and transmitted to the plug lid 310 with a simpler structure using a plurality of gears having different pitch circle diameters. Therefore, the number of parts and cost can be reduced.

  Further, relatively, since the first gear 420 is a small gear and the second gear 430 is a large gear, the lifting distance (stroke) of the push button 110 is the lifting distance (stroke) of the plug lid 310. Longer than. For this reason, the lift distance of the push button 110 when the stopper lid 310 is raised is relatively long. Thereby, it becomes easy for the user to visually recognize the raised state of the push button 110, and the open / closed state of the drain port can be communicated to the user in a more understandable manner.

Next, still another embodiment of the present invention will be described with reference to the drawings.
FIG. 21 is a block diagram showing a main configuration of a drain plug device according to still another embodiment of the present invention.
FIG. 22 is a schematic diagram showing a drain plug device according to this embodiment.

  The drain plug device according to the present embodiment includes an operation unit 100, an auxiliary mechanism (transmission unit) 600, and a drain plug unit 300. The drain plug portion 300 is the same as the drain plug portion 300 described above with reference to FIGS. The operation unit 100 of the present embodiment is provided with a known thrust lock mechanism 140 that is used in, for example, a push-type ballpoint pen. The thrust lock mechanism 140 is provided with a biasing portion 141 such as a spring and a support shaft 143. The urging unit 141 urges the stopper lid 310 in a direction that raises the plug lid 310, that is, a direction that raises the push button 110.

  The auxiliary mechanism 600 includes an opening / closing operation sensor (first sensor) 610, a control unit 620, a drain plug opening / closing sensor (second sensor) 630, an auxiliary force supply unit (amplifying unit, operation reversing unit) 640, Have The opening / closing operation sensor 610 can detect a state before the push button 110 is pushed (up state) or a push-in operation (down operation). The drain plug opening / closing sensor 630 can detect the raised state of the plug lid 310 (the drain port 521 is opened).

  As shown in FIG. 22, the first release wire 213 is disposed between the push button 110 and the auxiliary force supply unit 640. The first release wire (first transmission member) 213 includes an outer tube 213a and an inner wire 213b. In addition, a second release wire (second transmission member) 214 is disposed between the auxiliary force supply unit 640 and the plug lid 310. The second release wire 214 includes an outer tube 214a and an inner wire 214b.

  The auxiliary force supply unit 640 can supply an auxiliary force for lowering the stopper lid 310 to the first release wire 213 and the second release wire 214. That is, when the opening / closing operation sensor 610 detects the downward movement of the push button 110 while the drain plug opening / closing sensor 630 detects the opening state of the drain outlet 521, the control unit 620 operates the auxiliary force supply unit 640. The control to be executed is executed. As a result, the auxiliary force supply unit 640 applies the auxiliary force to the pushing force of the push button 110. That is, the pushing force of the push button 110 is amplified by the auxiliary force supply unit 640.

  According to this, as described above with reference to FIGS. 8 to 13, the urging force of the urging portion 141 is increased, thereby maintaining the open state of the drain port 521, that is, the raised state of the plug lid 310 during drainage. be able to. That is, since the auxiliary force supply unit 640 functions as an amplifying unit that amplifies the driving force generated by the operation of the push button 110 and transmits it to the plug lid 310, the urging force of the urging unit 141 of the thrust lock mechanism 140 is increased. In addition, the force required to operate the push button 110 can be reduced. Therefore, the burden on the user when operating the push button 110 can be reduced. Thereby, it can suppress that the drain outlet 521 becomes a plugged state with the momentum of the water flow at the time of drainage, and can perform drainage more reliably. Moreover, the drain plug device according to the present embodiment is easy to handle even for a user with relatively weak force.

FIG. 23 and FIG. 24 are schematic views illustrating the auxiliary force supply unit of this embodiment.
FIG. 23C is a schematic cross-sectional view taken along the line CC shown in FIG. FIG. 24B is a schematic perspective view when viewed in the direction of the arrow A41 shown in FIG. FIG. 24C is a schematic perspective view when viewed in the direction of the arrow A42 shown in FIG. In FIG. 24B and FIG. 24C, the case of the auxiliary force supply unit is omitted for convenience of explanation.

  The auxiliary force supply unit 640 includes a case 641, a motor 642, a rotating shaft 643, and a rotating body 644. The motor 642, the rotating shaft 643, and the rotating body 644 are housed in the case 641. The rotating shaft 643 is connected to the motor 642 and the rotating body 644. The driving force of the motor 642 is transmitted to the rotating body 644 through the rotating shaft 643. The motor 642 may be provided with a reduction gear, a torque limiter, or the like as necessary.

  As shown in FIGS. 24B and 24C, a groove 644 a is formed on the outer peripheral surface of the rotating body 644. One end of the inner wire 213 b of the first release wire 213 is fixed to the support shaft 143 of the thrust lock mechanism 140. The other end of the inner wire 213 b of the first release wire 213 is fixed to the groove 644 a of the rotating body 644. One end of the inner wire 214 b of the second release wire 214 is fixed to the groove 644 a of the rotating body 644. Similar to the release wire 212 described above with reference to FIG. 1, the other end of the inner wire 214 b of the second release wire 214 is fixed to the lower portion of the pin 323 of the drain plug portion 300.

  When the push button 110 moves in the direction of arrow A43 shown in FIG. 22, the inner wire 213b connected to the push button 110 via the support shaft 143 moves in the direction of arrow A44 shown in FIG. . The driving force generated by the operation of the push button 110 is transmitted to the rotating body 644 via the support shaft 143 and the inner wire 213b. Then, the rotating body 644 rotates about the rotation shaft 643 in the direction of the arrow A45 shown in FIG. At this time, as described above with reference to FIG. 22, the urging portion 141 is urged in the direction in which the stopper lid 310 is raised, that is, in the direction in which the push button 110 is raised. It rotates against the urging force.

  Then, the inner wire 214b fixed to the groove 644a of the rotating body 644 moves in the direction of arrow A46 shown in FIG. Then, the pin 323 of the drain plug portion 300 fixed to the other end of the inner wire 214b is lowered. According to this, the plug lid 310 supported by the pin 323 loses its support and descends due to its own weight, thereby closing the drain port 521.

  On the other hand, when the push button 110 moves in the direction opposite to the arrow A43 shown in FIG. 22, the inner wire 213b moves in the direction opposite to the arrow A44 shown in FIG. The driving force generated by the operation of the push button 110 is transmitted to the rotating body 644 via the support shaft 143 and the inner wire 213b. Then, the rotating body 644 rotates about the rotation shaft 643 in the direction opposite to the arrow A45 shown in FIG.

  Then, the inner wire 214b fixed to the groove 644a of the rotating body 644 moves in the direction opposite to the arrow A46 shown in FIG. If it does so, the pin 323 of the drain plug part 300 fixed to the other end of the inner wire 214b will raise. According to this, the plug lid 310 is supported and lifted by the pin 323 to bring the drain port 521 into the plug opened state.

  In this way, the lifted state of the plug lid 310 and the lifted state of the push button 110 can be synchronized. In other words, the raising / lowering operation of the push button 110 and the raising / lowering operation of the plug lid 310 can be interlocked. That is, the auxiliary force supply unit 640 functions as an operation reversing unit that reverses the direction of the driving force generated by the operation of the push button 110 and transmits the direction to the plug lid 310.

  According to this, the user can intuitively grasp the open / close state of the drain port from the lifted state of the push button 110 without looking into the inside of the bathtub 500. That is, according to the drain plug device according to the present embodiment, the open / closed state of the drain port can be easily communicated to the user.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, size, material, arrangement, and the like of each element included in the casing 200 and the installation form of the operation unit 100 and the drain plug unit 300 are not limited to those illustrated, and can be changed as appropriate. Further, for example, the casing 200 may be installed away from the drain plug portion 100 or may be installed at an intermediate position of the release wire.
Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  DESCRIPTION OF SYMBOLS 100 Operation part, 110 Push button, 120 Case, 130 Connection body, 140 Thrust lock mechanism, 141 Energizing part, 143 Support shaft, 200 Casing, 201 Female screw, 203 pipe, 203a Outer pipe, 203b Inner pipe, 205 Bearing part, 207 Leg receiving portion, 208 bottom portion, 209 guide recess, 211 wire, 211a first wire, 211b second wire, 211d first connecting portion, 212 release wire, 212a outer tube, 212b inner wire, 212c protrusion, 212d 2nd connection part, 213 1st release wire, 213a outer tube, 213b inner wire, 214 2nd release wire, 214a outer tube, 214b inner wire, 220 packing 230 wire guide, 231 hole, 233 leg, 235 guide wall, 240 rotating body, 241 first groove, 242 second groove, 243 shaft, 245 cam groove, 245a first corner, 245b second Corner, 245c third corner, 245d fourth corner, 245e bottom surface, 250 biasing portion, 260 lock pin, 261 base, 263 convex portion, 263a top surface, 270 lid, 271 male screw, 300 drain plug Part, 310 plug lid, 320 case, 321 outer case, 322 inner case, 323 pin, 400 transmission mechanism, 410 first cable rack, 420 first gear, 430 second gear, 440 second cable rack, 500 bathtub, 510 flange, 520 bottom, 521 drain, 30 the guide tube, 600 assist mechanism, 610 opening and closing sensor, 620 control unit, 630 drain plug opening sensor, 640 assist force supply unit, 641 case, 642 motor, 643 rotary shaft, 644 rotating body, 644a grooves

Claims (4)

A drain plug portion that has a plug lid and opens and closes the drain outlet of the bathtub by raising and lowering the plug lid;
An operation unit having a push button and capable of inputting an operation of pushing the push button;
A transmission unit that transmits the operation of the push button to the stopper lid and raises and lowers the stopper lid;
An urging portion that urges the stopper lid in a direction to raise the push button and a direction to raise the push button;
A locking mechanism for controlling the positions of the stopper lid and the push button;
With
The transmitting unit has an amplifying unit that amplifies a force pushing the push button and transmits the amplified force to the plug lid, transmits the amplified force against the urging force of the urging unit, and Down,
The drainage device according to claim 1, wherein the lock mechanism is capable of holding a state in which the stopper lid is lowered and the drain outlet is closed, and a state in which the push button is lowered. The transmission unit is
A transmission member that interlocks the lifting operation of the push button and the lifting operation of the stopper lid;
An operation reversing unit that is provided in the middle of the transmission member and reverses the direction of the force of pushing the push button and transmits the direction to the plug lid;
Have
The transmission member is
A first transmission member disposed between the push button and the operation reversing unit;
A second transmission member disposed between the operation reversing unit and the stopper lid;
Have
The operation reversing unit is
A rotating body rotatable about an axis;
A first connecting portion to which the rotating body and the first transmission member are connected;
A second connection portion provided on the side opposite to the first connection portion when viewed from the shaft, to which the rotating body and the second transmission member are connected;
Have
The drain plug device according to claim 1, wherein a distance between the shaft and the first connection portion is longer than a distance between the shaft and the second connection portion. The transmission unit is
A transmission member that interlocks the lifting operation of the push button and the lifting operation of the stopper lid;
An operation reversing unit that is provided in the middle of the transmission member and reverses the direction of the force of pushing the push button and transmits the direction to the plug lid;
Have
The transmission member is
A first transmission member disposed between the push button and the operation reversing unit;
A second transmission member disposed between the operation reversing unit and the stopper lid;
Have
The operation inversion unit and the amplification unit are
A first gear meshing with the first transmission member;
A second gear larger than the first gear and meshing with the first gear and the second transmission member;
The drain plug device according to claim 1, comprising: The transmission unit is
A transmission member that interlocks the lifting operation of the push button and the lifting operation of the stopper lid;
An operation reversing unit that is provided in the middle of the transmission member and reverses the direction of the force of pushing the push button and transmits the direction to the plug lid;
Have
The operation inversion unit and the amplification unit are
A first sensor for detecting an operation of pressing the push button;
A second sensor for detecting a state in which the stopper lid is raised and the drain opening is opened;
An auxiliary force supply unit that supplies the transmission member with a force that assists the lowering operation of the stopper lid;
In the case where the second sensor detects the open state of the drain outlet, when the first sensor detects an operation of pressing the push button, the auxiliary force supply unit is operated, and the push button is A control unit that executes control for giving auxiliary force to the pushing force, amplifying the pushing force of the push button, and transmitting the amplified force to the cap lid;
The drain plug device according to claim 1, comprising:

Images