JP2016033300A - Drain valve driving unit, wash water tank device provided with drain valve driving unit, and water closet provided with wash water tank device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain valve driving unit that enhances ease of installation work and maintenance.SOLUTION: A drain valve driving unit 1 includes a drain valve device 28 having a valve body 62 for opening/closing an exhaust port provided on a water storage tank 8, and a connecting member 46 having an end connected to the drain valve device and the other end connected to an operation device 40. The connecting member includes an outside hose member 52 and an operation wire member 50 that pierces through the outside hose member. A fixing unit 48 is disposed on the other end of the connecting member, the fixing unit 48 having both the outside hose member and the operation wire member connected, so as to open/close the valve body when the operation wire member is shifted with regard to the outside hose member as the operation device is operated. The fixing unit 48 is detachably attached on the drain valve device.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a drain valve driving unit, a washing water tank device provided with the drain valve driving unit, and a flush toilet equipped with the washing water tank device, and in particular, the washing water in the washing water tank is used as a toilet. The present invention relates to a drain valve driving unit for draining, a washing water tank apparatus provided with the drain valve driving unit, and a flush toilet equipped with the washing water tank apparatus.

Conventionally, as a drain valve drive unit that drains wash water in a wash water tank to a toilet, for example, as described in Patent Document 1, one operation wire connected to an operation unit is pulled up. There is known a so-called wire-driven direct-acting drain valve in which the drain valve rises to open the drain port of the cleaning water tank.
The operation wire used in such a wire-driven drain valve is covered with a tube, and one end of the tube is fixed to a casing in which the drain valve is housed. On the other hand, one end of the operation wire protruding through the tube is fixed to a part of the valve body of the drain valve, and one end of the tube and one end of the operation wire are separately provided at two different places. It is fixed.

JP 2013-104271 A

However, in the conventional drain valve driving unit described above, since one end of the tube and one end of the operation wire are separately fixed at two different locations, for example, a malfunction or the like occurs in the drain valve. When it becomes necessary to perform parts replacement or maintenance for only the valve, there is a problem that it is not easy to remove only the drain valve. Therefore, if it is necessary to replace and maintain the drain valve along with the related parts around the drain valve, such as operation wires and tubes that do not need to be replaced or maintained at present, it will be a waste of time and effort. There is a problem that it also costs.
For example, in a toilet with an automatic cleaning function, the automatic cleaning drive unit is often hidden behind the toilet etc. There is also a problem that the maintenance work becomes more complicated.

  Then, this invention is made | formed in order to solve the trouble of the prior art mentioned above, and it aims at providing the drain valve drive unit which can improve workability and maintainability.

In order to achieve the above object, the present invention is a drain valve driving unit for draining flush water in a flush water tank to a toilet bowl, comprising a valve body for opening and closing a drain port provided in the flush water tank. A drain valve device portion, and a connecting member having one end connected to the drain valve device portion and the other end connected to the operation portion. The connecting member includes a hollow tube portion and a hollow tube portion. A connecting line portion penetrating through the inside of the tube portion, and at the other end of the connecting member, the valve body is moved when the connecting line portion is moved relative to the hollow tube portion in accordance with the operation of the operation portion. A fixed unit portion to which both the hollow tube portion and the connecting wire portion are connected to be opened and closed is provided, and the fixed unit portion is detachably attached to the drain valve device portion. It is said.
In the present invention configured as described above, in a state where the fixed unit portion is attached to the drainage valve device portion, the connecting wire portion of the connecting member may move relative to the hollow tube portion according to the operation of the operating portion. The valve body of the drain valve device can open and close the drain port of the wash water tank. In addition, for example, when a malfunction or the like occurs in the drain valve device, by removing the fixed unit from the drain valve device, both the hollow tube of the connecting member and the connecting line portion that penetrates the hollow tube portion are provided. Can be removed from the drain valve device at the same time, and only the drain valve device can be easily maintained. After that, by attaching the fixed unit portion to the drain valve device portion again, both the hollow pipe and the connecting wire portion of the connecting member can be simultaneously attached to the drain valve device portion and can be easily constructed. Therefore, the workability and maintainability of the drain valve drive unit can be improved.

In the present invention, preferably, the hollow tube portion is fixed to the fixed unit portion, and the connecting wire portion is movably connected to the fixed unit portion.
In the present invention configured as above, the hollow tube portion of the connecting member is fixed to the fixed unit portion, and the connecting wire portion is movably connected to the fixed unit portion. Since the connecting line portion penetrating through can stably move with respect to the hollow tube and the fixed unit portion according to the operation of the operating portion, the fixed unit portion can be connected to the drain valve device in a state in which the connecting line portion can stably operate. It can be attached to and detached from the part.

In the present invention, preferably, the drain valve device section further includes a main body portion extending upward from the valve body, and a guide portion that guides the main body portion so as to be movable in the vertical direction, and the fixed unit portion. Is attached to the drain valve device portion, the connecting wire portion contacts the part of the main body portion when moving with respect to the fixed unit portion by the operation of the operation portion, and the main body portion and the It is connected to a position where the valve body can be pulled up.
In the present invention configured as described above, in a state where the fixed unit portion is attached to the drain valve device portion, when the connecting wire portion moves relative to the fixed unit portion by the operation of the operation portion, a part of the main body portion Since the main body and the valve body are connected to a position where the main body and the valve body can be pulled up, it is possible to easily pull up the main body section and the valve body at the connecting line portion simply by attaching the fixed unit to the drain valve device section be able to. Therefore, the workability and maintainability of the drain valve drive unit can be improved.

In this invention, Preferably, the said connection line part is provided with the locking member which moves the inside of the said fixed unit part to an up-down direction by operation of the said operation part, The said main-body part is the said connection line part by operation of the said operation part. Is provided with a projection that moves the main body and the valve body upward when the locking member comes into contact with the fixed unit.
In the present invention configured as described above, the engaging member of the connecting line portion that moves up and down in the fixed unit portion by the operation of the operating portion, and the connecting wire portion is pulled up with respect to the fixed unit portion by the operation of the operating portion. The main body part of the drainage valve device part and the valve body can be lifted with a simple structure by the projection of the main body part of the drainage valve device part with which the locking member abuts in the state of being held.

In this invention, Preferably, the attachment part of the said fixed unit part and the said drain valve apparatus part is provided in the height position lower than the initial water level in the said washing water tank before drainage start.
In the present invention configured in this way, the attachment portion of the fixed unit portion and the drain valve device portion is provided at a height position lower than the initial water level in the wash water tank before the start of drainage. Since the attachment portion between the fixed unit portion and the drain valve device portion is submerged in the initial state before the start, it is possible to prevent water and the like from adhering to the attachment portion between the fixed unit portion and the drain valve device portion. Therefore, it becomes easy to attach and detach the fixed unit portion from the drain valve device portion, and the workability and maintainability of the drain valve driving unit can be improved.

Next, the present invention is a washing water tank device comprising the drain valve device.
In this invention comprised in this way, the wash water tank apparatus provided with the drain valve drive unit which can improve workability and maintainability can be provided.

Next, the present invention is a flush toilet comprising the flush water tank apparatus.
In this invention comprised in this way, the flush toilet which has the flush water tank apparatus provided with the drain valve drive unit which can improve workability and maintainability can be provided.

  According to the drain valve drive unit of the present invention, workability and maintainability can be improved.

1 is a perspective view of a flush toilet to which a flush water tank apparatus including a drain valve driving unit according to an embodiment of the present invention is applied. It is side surface sectional drawing of the flush toilet to which the flush water tank apparatus provided with the drain valve drive unit by one Embodiment of this invention was applied. It is the perspective view which abbreviate | omitted the upper cover and front side wall surface of the water storage tank about the washing water tank apparatus provided with the drain valve drive unit by one Embodiment of this invention, and looked at the internal structure from diagonally upward. It is front sectional drawing which shows the drain valve drive unit by one Embodiment of this invention. It is a disassembled perspective view which shows the drain valve apparatus in the drain valve drive unit by one Embodiment of this invention, the fixing unit removed from this drain valve apparatus, and a connection member. It is a disassembled perspective view which shows the casing member in the fixed unit of the drain valve drive unit by one Embodiment of this invention, and the connection member of the state removed from this casing member. It is the perspective view which looked at the cylindrical main body member of the drain valve apparatus in the drain valve drive unit by one Embodiment of this invention from diagonally downward. FIG. 5 is a partially enlarged front view in which a portion of a fixed unit is enlarged in the drain valve driving unit according to the embodiment of the present invention shown in FIG. 4.

Next, a drain valve drive unit according to an embodiment of the present invention, a flush water tank apparatus provided with the drain valve drive unit, and a flush toilet equipped with the flush water tank apparatus will be described with reference to the accompanying drawings.
First, referring to FIGS. 1 and 2, a flush toilet to which a flush water tank apparatus equipped with a drain valve driving unit according to an embodiment of the present invention is applied will be described.
FIG. 1 is a perspective view of a flush toilet to which a flush water tank apparatus having a drain valve drive unit according to an embodiment of the present invention is applied, and FIG. 2 is a drain valve drive unit according to an embodiment of the present invention. It is side surface sectional drawing of the flush toilet to which the washing water tank apparatus provided with was applied.

As shown in FIGS. 1 and 2, the drain valve driving unit 1 according to an embodiment of the present invention is disposed in a water storage tank 8 of a flush water tank device 6 disposed at the rear of the upper surface of the toilet body 4 of the flush toilet 2. It is provided for draining the wash water in the water storage tank 8 to the toilet body 4.
The toilet body 4 of the flush toilet 2 includes a bowl portion 10 provided on the front side thereof, a rim portion 12 formed on the upper edge of the bowl portion 10, and a shelf formed on the inner periphery of the rim portion 12. Part 14.
In addition, an inlet 16a of a drain trap conduit 16 is opened at the bottom of the bowl portion 10 of the toilet body 4, and the drain trap conduit 16 includes an upward pipe 16b extending upward and a downward pipe 16c extending downward. ing. As can be seen from the shape of the drain trap pipe 16, the flush toilet 2 is a wash-out toilet that discharges filth by a drop in the height direction.
In addition, in this embodiment, although the form applied to the wash-off type toilet bowl is demonstrated as the flush toilet 2, it is not limited to such a form, The filth in a bowl part is sucked in using a siphon action, and a drain trap The present invention can also be applied to other flush toilets such as a so-called siphon type toilet that is discharged to the outside at once from a pipeline.

Next, the toilet body 4 includes a water conduit 20 into which wash water discharged from the drain port 18 of the wash water tank device 6 flows, and a first rim spout formed at the center on the left side when viewed from the front of the rim portion 12. 22 and a second rim water spouting port 24 (see FIG. 1) formed on the rear right side when viewed from the front of the rim portion 12.
Further, the water conduit 20 extends downstream to the branch region 20a near the rear wall surface 12a of the rim portion 12, and then the first water conduit 20b extending from the branch region 20a to the first rim water spouting port 22 and the branch region The second water conduit 20c extends from 20a to the second rim spout 24, and the wash water of the water conduit 20 reaches the first rim spout 22 from the branch region 20a via the first water conduit 20b. It reaches the second rim water outlet 24 from the branch region 20a through the second water conduit 20c, and water is discharged from each of the first rim water outlet 22 and the second rim water outlet 24, the bowl portion 10 is washed, and filth is drained. The trap pipe 16 is discharged.

Next, the internal structure of the washing water tank apparatus provided with the drain valve driving unit 1 according to one embodiment of the present invention will be described with reference to FIGS.
FIG. 3 is a perspective view of the washing water tank apparatus including the drain valve driving unit according to the embodiment of the present invention, with the upper structure and the front side wall surface of the water storage tank omitted, and the internal structure seen from obliquely upward.
As shown in FIGS. 1 to 3, the washing water tank device 6 including the drain valve driving unit 1 according to the embodiment of the present invention includes a water storage tank 8 for storing washing water for washing the flush toilet 2, A drainage port 18 communicating with the water conduit 20 of the toilet body 4 is provided at the bottom of the water storage tank 8, and wash water in the water storage tank 8 is supplied from the drainage port 18 to the water conduit 20 of the toilet body 4. It has become so. Further, the amount of washing water stored in the water storage tank 8 differs depending on the type of toilet bowl.

  As shown in FIG. 3, in the water storage tank 8 of the cleaning water tank device 6, a water supply device 26 that supplies the cleaning water into the water storage tank 8 and a drain port 18 for the cleaning water stored in the water storage tank 8 are provided. A drainage valve device 28 of the drainage valve drive unit 1, which will be described in detail later, is provided that is opened and allowed to flow into the water conduit 20 of the toilet body 4. This drain valve device 28 is a so-called wire-driven direct-acting drain valve in which a valve body is lifted by pulling up one operation wire by operating the operation section to open a drain port of a water storage tank. Device.

  The water supply device 26 is connected to an external water supply source (not shown) and attached to the water supply pipe 30 provided so as to extend upward from the bottom of the water storage tank 8, and the upper end of the water supply pipe 30. A water supply valve 32 that switches between water discharge and stoppage of the wash water supplied from the water supply pipe 30 to the water storage tank 8, and water discharge and water stoppage by the water supply valve 32 by moving up and down according to fluctuations in the water level in the water storage tank 8. And a float 34 for switching between.

A plurality of water discharge ports 36 are formed at the outer peripheral side lower end portion of the water supply pipe 30, and the wash water that has passed through the water supply valve 32 is discharged from the water discharge port 36 into the water storage tank 8.
In the water supply device 26, when the flush water in the water storage tank 8 is drained into the toilet bowl by the drain valve device 28 of the drain valve driving unit 1, the flush water level is lowered and the float 34 is lowered. Thus, the water supply valve 32 is opened, water discharge from the water discharge port 36 is started, and water discharge from the water supply source (not shown) outside the washing water tank device 6 into the water storage tank 8 is started.
Further, when water discharge continues and the water level in the water storage tank 8 rises, the float 34 rises, thereby closing the water supply valve 32 and stopping water discharge from the water discharge port 36. Thereby, the water level of the washing water in the water storage tank 8 is maintained at a predetermined water level at the time of full water (hereinafter referred to as “full water level W0”). Here, the full water level W0 substantially corresponds to the initial water level in the water storage tank 8 before the start of drainage.
Although not described in the present embodiment, the water supply device 26 includes a refill pipe (not shown) and the like, and a part of the washing water flowing out from the refill pipe (not shown) is described in detail. It flows into an overflow pipe 38 of a drain valve device 28 to be described later, and can be supplied into the bowl portion 10 as make-up water through the water conduit 20 of the toilet body 4.

  Further, as shown in FIG. 3, the washing water tank device 6 includes an operation device 40 for operating the operation of the drain valve device 28 of the drain valve driving unit 1, and this operation device 40 is attached to the outside of the water storage tank 8. And a wire take-up device 44 provided inside the water storage tank 8 and connected to the operation lever 42. In the wire winding device 44, a rotational force when the operation lever 42 is manually rotated is transmitted to a rotating mechanism member (not shown) such as a pulley or a gear in the casing 44a of the wire winding device 44. In this manner, one end of an elongated connecting member 46 of the drain valve driving unit 1 described later is connected.

Next, the details of the drain valve driving unit according to the embodiment of the present invention will be described with reference to FIGS.
First, FIG. 4 is a front sectional view showing a drain valve driving unit according to an embodiment of the present invention, and FIG. 5 shows a drain valve device in the drain valve driving unit according to an embodiment of the present invention and the drain valve device. It is a disassembled perspective view which shows the fixed unit and connection member of the state which removed.
FIG. 6 is an exploded perspective view showing the casing member in the fixed unit of the drain valve driving unit according to the embodiment of the present invention and the connecting member removed from the casing member. Furthermore, FIG. 7 is a perspective view of the cylindrical main body member of the drain valve device in the drain valve drive unit according to the embodiment of the present invention, as viewed obliquely from below. FIG. 8 is a partially enlarged front view of the fixed unit in the drain valve driving unit according to the embodiment of the present invention shown in FIG.

As shown in FIGS. 3 to 6 and 8, the drain valve driving unit 1 of the present embodiment includes a drain valve device 28 and a connecting member 46 whose upper end connection portion is coupled to a wire winding device 44 of the operating device 40. And a fixing unit 48 to which the lower end connection portion of the connecting member 46 is connected.
As shown in FIGS. 4, 6, and 8, the connecting member 46 includes a metal operation wire member 50 having a relatively elastic flexibility and a periphery of the operation wire member 50. A hollow outer hose member 52 having flexibility and durability for covering is provided, and the operating wire member 50 extends so as to penetrate the inside of the outer hose member 52.
In the present embodiment, an example in which a metal wire member having a relatively high elasticity and flexibility is used as the operation wire member 50 will be described. However, instead of the wire member, a resin or metal wire is used. A member such as a ball chain may be applied.

Further, as shown in FIG. 3, the upper end connection portion 52 a of the outer hose member 52 is fixed to the lower end connection portion 44 b of the casing 44 a of the wire winding device 44.
On the other hand, the upper end connection portion 50a of the operation wire member 50 extending from the upper end connection portion 52a of the outer hose member 52 is connected to a rotation mechanism member (not shown) such as a pulley in the casing 44a of the wire winding device 44. When the operation lever 42 is manually rotated about the rotation center axis A1, the operation wire member 50 is wound by the rotation mechanism member (not shown) of the wire winding device 44, and the outer hose is wound. The member 52 slides and moves in the longitudinal direction, and is pulled up as a whole.

Next, as shown in FIGS. 3 to 5, 7, and 8, the drain valve device 28 of the drain valve driving unit 1 is attached to the bottom surface of the water storage tank 8 and communicates with the water conduit 20 of the toilet body 4. A drain port forming member 54 that forms the drain port 18, and an overflow pipe 38 provided above the drain port 18 and extending in the vertical direction concentrically with the central axis C <b> 1 of the drain port 18 are provided.
As shown in FIG. 4, the lower end portion of the drain port forming member 54 penetrates the bottom surface 8 a of the water storage tank 8 and is fastened by the fastening member 58 via the seal member 56, and the drain port forming member 54 is connected to the water storage tank 8. Are fixed to the bottom surface 8a.
Further, as shown in FIG. 4, the drain port forming member 54 includes a valve seat 60 that is formed over the entire periphery along the upper edge of the drain port 18 and protrudes upward, and is shown in FIGS. 4 and 7. As described above, the valve body 62 that can come into contact with the valve seat 60 is provided at the lower end portion of the overflow pipe 38, and the drain port 18 is closed when the valve seat 60 and the valve body 62 are in contact with each other. It has become.

As shown in FIGS. 4 and 5, the drain port forming member 54 includes a plurality of support columns extending in the vertical direction from a position spaced apart from the valve seat 60 to the upper end of the drain port forming member 54. The support portions 64 are provided at predetermined intervals along the circumferential direction, and the wash water outside the drain valve device 28 is passed between the adjacent support portions 64 to the drain port 18. A plurality of communication ports 66 for inflow are formed.
Further, as shown in FIGS. 4, 5, 7 and 8, the drain valve device 28 of the drain valve driving unit 1 is provided above the drain port forming member 54 and so as to surround the periphery of the overflow pipe 38. A guide member 68 is provided. The guide member 68 includes a cylindrical portion 68a extending in a cylindrical shape upward from the lower end portion thereof, and the overflow pipe 38 is inserted into the cylindrical portion 68a of the guide member 68 and extends through the cylindrical portion 68a. The main body 38a is formed in a shape.
Further, as shown in FIGS. 7 and 8, a plurality of guide projections 38b formed to extend in the vertical direction are formed on the outer surface of the main body portion 38a of the overflow pipe 38 at predetermined intervals in the circumferential direction. Has been. In a state where the main body portion 38 a of the overflow pipe 38 is inserted into the cylindrical portion 68 a of the guide member 68, the plurality of guide protrusions 38 b abut against the inner peripheral surface of the cylindrical portion 68 a of the guide member 68, and the overflow pipe 38 is The guide member 68 can slide and move in the vertical direction without rattling.

Next, as shown in FIGS. 4 to 8, the fixed unit 48 includes a casing 70 that forms a main body portion thereof. The casing 70 is attached to a fixed unit formed on the side surface of the cylindrical portion 68 a of the guide member 68. The unit 72 is detachably attached.
As shown in FIGS. 5 and 6, a hinge shaft 70a extending in the vertical direction is provided at the center of the left side as viewed from the front of the casing 70. The casing 70 is centered on the hinge shaft 70a. Are provided with a front casing portion 70b and a rear casing 70c that can be opened and closed.
Further, a connection portion 70d to which the lower end connection portion 52b of the outer hose member 52 is attached and fixed is provided at the upper end portions of the front casing portion 70b and the rear casing 70c of the casing 70.

Further, elastic claws 70e arranged in parallel in a pair in the vertical direction are provided on the front surface of the front casing portion 70b and the rear surface of the rear casing 70c, respectively.
Further, as shown in FIG. 5, the fixed unit mounting portion 72 has a pair of sandwiching walls 72 a formed so as to extend in the vertical direction with a width substantially equal to the width of the casing 70 so that the longitudinal direction of the casing 70 can be sandwiched. 72b. The clamping walls 72a and 72b are provided with locking holes 72c in which the elastic claws 70e of the casing 70 are elastically locked in a state where the casing 70 is mounted on the fixed unit mounting portion 72.

When the casing 70 is attached to the fixed unit attachment portion 72, the front casing portion 70b and the rear casing 70c of the casing 70 are closed and fitted between the sandwiching walls 72a and 72b, and the distal end portion of each elastic claw 70e is fitted. The casing 70 is fixed to the fixed unit mounting portion 72 by being elastically fitted into the corresponding locking holes 72c. Thus, by attaching the fixed unit 48 to the fixed unit attachment portion 72 of the drain valve device 28, both the outer hose member 52 and the operation wire member 50 of the connecting member 46 can be attached to the drain valve device 28 at the same time. It is like that.
On the other hand, when removing the casing 70 from the fixed unit mounting portion 72, by pressing the tip of the elastic claw 70e, the locking of the elastic claw 70e elastically fitted in the locking hole 72c is released, The casing 70 can be removed from the fixed unit attachment portion 72. Thus, by removing the fixed unit 48 from the fixed unit mounting portion 72 of the drain valve device 28, both the outer hose member 52 of the connecting member 46 and the operation wire member 50 penetrating through the outer hose member 52 are drain valves. It can be removed from the device 28 at the same time.

  As shown in FIGS. 3, 4 and 8, the mounting portion between the casing 70 of the fixed unit 48 and the fixed unit mounting portion 72 of the drain valve device 28 has an initial water level W 0 in the water storage tank 8 before drainage is started. It is provided at a lower height position. As a result, in a state where the casing 70 is attached to the fixed unit attachment portion 72, the attachment portion between the casing 70 of the fixed unit 48 and the fixed unit attachment portion 72 of the drain valve device 28 is submerged in the initial state before the start of drainage. It is possible to prevent scales and the like from adhering to the mounting portion, and the casing 70 of the fixed unit 48 can be easily attached and detached from the fixed unit mounting portion 72 of the drain valve device 28.

Further, as shown in FIGS. 6 and 8, a projection 50 b is provided in the casing 70 at the lower end of the operation wire member 50 extending from the lower end connection portion 52 b of the outer hose member 52. The protrusion 50 b is moved relative to the outer hose member 52 by the operation of the operating device 40, and can be moved in the vertical direction in the casing 70 together with the operation wire member 50.
Further, an oval fastener 74 that can be accommodated in the casing 70 and has a larger outer shape than the protrusion 50 is provided above the protrusion 50 b of the operation wire member 50. The operation wire member 50 passes through the central hole 74 a of the fastener 74, and when the operation wire member 50 is pulled up, the upper surface of the protrusion 50 b at the lower end of the operation wire member 50 is the lower surface of the fastener 74. , The protrusion 50b and the fastener 74 can be raised together.

  As shown in FIGS. 5, 7, and 8, a valve body operating protrusion 76 that protrudes outward in the horizontal direction is provided on the side surface of the main body 38 a of the overflow pipe 38. When the guide member 68 is attached to the main body portion 38 a of the overflow pipe 38, the valve body operation protrusion 76 penetrates the opening 68 b formed on the side surface of the cylindrical portion 68 a of the guide member 68 corresponding to the fixed unit attachment portion 72. Projecting outward. Further, in a state where the casing 70 is attached to the fixed unit attaching portion 72, the valve element operating projection 76 has an opening 70f on the drain valve device 28 side of the casing 70 facing the opening 68b of the cylindrical portion 68a of the guide member 68 (FIG. 6). And is located within the casing 70.

Furthermore, a guide groove 76a is formed in the valve element operating projection 76 from its substantially central portion toward the tip in the horizontal direction. In a state in which the casing 70 of the fixed unit 48 is attached to the fixed unit attaching portion 72, the valve element operating protrusion 76 is positioned above the protrusion 50b of the operating wire member 50 and the fastener 74 in the casing 70, and the operating wire The member 50 extends so as to penetrate the guide groove 76a of the valve element operating projection 76 in the vertical direction. When the operation wire member 50 is pulled up, the upper surface of the fastener 74 that rises together with the protrusion 50b at the lower end of the operation wire member 50 comes into contact with and is connected to the lower surface of the valve element operation protrusion 76. Yes.
Further, when the operation wire member 50 is further pulled up in a state in which the fastener 74 and the valve element operation protrusion 76 are in contact with each other, the protrusion 50b of the operation wire member 50 and the body portion of the attachment 74 and the overflow pipe 38 are obtained. The valve element operating projection 76 of 38a is integrally raised. When the overflow pipe 38 rises together with the valve body operating projection 76, the valve body 62 provided at the lower end portion of the overflow pipe 38 rises, and the drain port 18 is opened.
4 and 8, the protrusion 50b and the fastener 74 of the operation wire member 50, and the overflow pipe 38, the valve body 62, and the valve body operation protrusion 76 rise to the highest level, and toilet cleaning is performed in the large washing mode. Is indicated by a chain line, and a position (lowest position) in which the valve body 62 is lowered and the drain port 18 is closed is indicated by a solid line.

For example, as shown in FIG. 3, when the operating lever 42 of the operating device 40 is manually rotated in a predetermined direction B around the rotation center axis A1, a rotating mechanism such as a pulley in the casing 44a of the wire winding device 44 is obtained. A member (not shown) rotates, and the operation wire member 50 of the connecting member 46 is wound up by the rotation mechanism member (not shown), and the protrusion 50b and the fastener 74 of the operation wire member 50 are pulled up. It has become.
As shown in FIGS. 3, 4, and 8, the raised protrusion 50 b and the fastener 74 of the operation wire member 50 abut against the valve element operation protrusion 76 of the main body 38 a of the overflow pipe 38 from below. When the valve body operating projections 76 are pulled up and the body portion 38a and the valve body 62 of the overflow pipe 38 are pulled up to a predetermined height H1, the drain port 18 is opened. Then, drainage is performed with a relatively large amount of drainage from the drain port 18 of the water storage tank 8 to the water conduit 20 of the toilet body 4, and toilet cleaning is executed in the large washing mode within the bowl portion 10 of the toilet body 4. ing.

  Similarly, when the operation lever 42 of the operation device 40 is manually rotated in the direction C opposite to the predetermined direction B around the rotation center axis A1, a rotation mechanism member such as a pulley in the casing 44a of the wire winding device 44 is obtained. As shown in FIGS. 3 and 4, the valve body 62 of the drain valve device 28 is pulled up to a predetermined height H2 lower than the predetermined height H1 by the pulled up operating wire member 50, as shown in FIGS. The drain port 18 is opened by being pulled up. Then, drainage is performed with a relatively small amount of drainage from the drain port 18 of the water storage tank 8 to the water conduit 20 of the toilet body 4, and toilet cleaning is performed in the small washing mode within the bowl portion 10 of the toilet body 4. ing.

  In the present embodiment, an example in which the wire winding device is operated by manually rotating the operation lever 42 of the operation device 40 and the operation wire member 50 can be pulled up has been described. A drive means such as a motor for rotation may be provided, and the operation lever of the operation device and the wire winding device may be driven electrically. Further, an operation mode may be adopted in which the operation of the driving means is automatically controlled by an operation button set outside or a command signal from a human sensor.

  According to the drain valve driving unit 1 according to the above-described embodiment of the present invention, in a state where the fixing unit 48 is attached to the fixing unit attaching portion 72 of the drain valve device 28, the connecting member 46 is operated according to the operation of the operating device 40. The operation wire member 50 can move with respect to the outer hose member 52, and the valve body 62 of the drain valve device 28 can open and close the drain port 18 of the water storage tank 8. Further, for example, when a failure or the like occurs in the drain valve device 28, the outer hose member 52 of the connecting member 46 and the outer hose member are removed by removing the fixing unit 48 from the fixing unit mounting portion 72 of the drain valve device 28. Both the operation wire members 50 penetrating through the inside 52 can be removed from the drain valve device 28 at the same time, and only the drain valve device 28 can be easily maintained. Thereafter, by attaching the fixing unit 48 to the fixing unit attaching portion 72 of the drain valve device 28 again, both the outer hose member 52 and the operation wire member 50 of the connecting member 46 can be attached to the drain valve device 28 at the same time. Easy to install. Therefore, the workability and maintainability of the drain valve driving unit 1 can be improved.

  Further, according to the drain valve driving unit 1 according to the present embodiment, the outer hose member 52 of the connecting member 46 is fixed to the casing 70 of the fixing unit 48, and the protrusion 50 b and the fastening of the lower end connection portion of the operation wire member 50 are fixed. Since the tool 74 is movably connected in the casing 70 of the fixed unit 48, the operation wire member 50 penetrating the outer hose member 52 can be operated in accordance with the operation of the operating device 40. It is possible to move stably with respect to the casing 70. Therefore, the fixed unit 48 can be attached to and detached from the fixed unit mounting portion 72 of the drain valve device 28 in a state where the operation wire member 50 can stably operate.

  Furthermore, according to the drain valve driving unit 1 according to the present embodiment, in the state where the fixing unit 48 is attached to the fixing unit attachment portion 72 of the drain valve device 28, the protrusion 50b and the fastener at the lower end connection portion of the operation wire member 50 When 74 is moved relative to the casing 70 of the fixed unit 48 by operating the operating device 30, the main body portion and the valve body are brought into contact with the valve body operating projection 76 of the main body portion 38a of the overflow pipe 38 of the drain valve device 28. Since it is connected to a position where it can be pulled up, it is possible to easily connect the main unit 38a of the overflow pipe 38 of the drain valve device 28 with the operation wire member 50 by simply attaching the fixed unit 48 to the fixed unit mounting portion 72 of the drain valve device 28. The valve body 62 can be lifted. Therefore, the workability and maintainability of the drain valve driving unit 1 can be improved.

  Further, according to the drain valve driving unit 1 according to the present embodiment, the protrusion 50b and the fastener 74 at the lower end connection portion of the operation wire member 50 that moves in the vertical direction in the casing 70 of the fixed unit 48 by the operation of the operation device 40. And the valve body operation of the main body portion 38a of the overflow pipe 38 of the drain valve device 28 with which the fastener 74 abuts in a state where the operation wire member 50 is pulled up with respect to the casing 70 of the fixed unit 48 by the operation of the operation device 40. With the action protrusion 76, the main body 38a and the valve body 62 of the overflow pipe 38 of the drain valve device 28 can be lifted with a simple structure.

  Furthermore, according to the drain valve driving unit 1 according to the present embodiment, the mounting portion between the casing 70 of the fixed unit 48 and the fixed unit mounting portion 72 of the drain valve device 28 is from the initial water level W0 in the water storage tank 8 before drainage is started. Since the mounting portion between the casing 70 of the fixed unit 48 and the fixed unit mounting portion 72 of the drainage valve device 28 is submerged in the initial state before the start of drainage. It is possible to prevent water and the like from adhering to the attachment portion between the casing 70 of the unit 48 and the fixed unit attachment portion 72 of the drain valve device 28. Therefore, the casing 70 of the fixed unit 48 can be easily detached from the fixed unit mounting portion 72 of the drain valve device 28, and the workability and maintainability of the drain valve driving unit 1 can be improved.

  Moreover, according to the drain valve drive unit 1 by this embodiment, the washing water tank apparatus 6 and the flush toilet 2 which can improve workability and maintainability can be provided.

DESCRIPTION OF SYMBOLS 1 Drain valve drive unit 2 Flush toilet 4 Toilet body 6 Wash water tank device 8 Water tank 8a Bottom surface of water tank 10 Bowl part 12 Rim part 12a Rear wall surface of rim part 14 Shelf part 16 Drain trap pipe 16a Drain trap pipe 16b Drain pipe of drain trap pipe 16c Down pipe of drain trap pipe 18 Drain port 20 Water conduit 20a Branch area of water conduit 20b First water conduit 20c Second water conduit 22 First rim outlet 24 Second rim Water outlet 26 Water supply device 28 Drain valve device (Drain valve unit)
30 Water supply pipe 32 Water supply valve 34 Float 36 Water outlet 38 Overflow pipe (main part of drain valve device)
38a Overflow pipe body 38b Overflow pipe guide protrusion 40 Operating device (operating section)
42 Operation lever 44 Wire winding device (operation unit)
44a casing 44b lower end connection part of casing 46 connecting member 48 fixing unit 50 wire member for operation (connection line part of connecting member)
50a Upper end connection part of operation wire member (other end of connecting member)
50b Projection of operation wire member (one end of connecting member)
52 Outer hose member (hollow tube part of connecting member)
52a Upper end connection part of outer hose member (other end of connecting member)
52b Lower end connection part of outer hose member (one end of connecting member)
54 Drainage port forming member 56 Sealing member 58 Fastening member 60 Valve seat 62 Valve body 64 Strut portion 66 Communication port 68 Guide member (guide portion of drainage valve device portion)
68a Cylindrical portion of guide member 68b Opening of guide member 70 Casing 70a Hinge shaft 70b Front casing portion 70c Rear casing portion 70d Connection portion 70e Elastic claw
70f Opening 72 Fixed unit mounting part 72a Holding wall 72b Holding wall 72c Locking hole 72a Opening 74 Fastening (locking member)
74a Center hole of fastener 76 Protrusion for valve body operation 76a Guide groove

Claims (7)

A drain valve drive unit for draining the wash water in the wash water tank to the toilet bowl,
A drain valve device having a valve body for opening and closing a drain port provided in the washing water tank;
A connection member having one end connected to the drain valve device and the other end connected to the operation unit;
The connecting member includes a hollow tube portion and a connecting line portion penetrating through the hollow tube portion. The other end of the connecting member has the connecting line portion in the middle according to the operation of the operating portion. A fixed unit portion to which both the hollow tube portion and the connecting wire portion are connected is provided so that the valve body is opened and closed when moved with respect to the empty pipe portion. A drain valve driving unit, which is detachably attached to the valve device.   The drain valve drive unit according to claim 1, wherein the hollow tube portion is fixed to the fixed unit portion, and the connecting wire portion is movably connected to the fixed unit portion.   The drain valve device part further includes a main body part extending upward from the valve body, and a guide part that guides the main body part so as to be movable in the vertical direction, and the fixed unit part is attached to the drain valve device part. In the attached state, when the connection line portion is moved with respect to the fixed unit portion by operation of the operation portion, the connection wire portion is brought into contact with a part of the main body portion so that the main body portion and the valve body can be pulled up. The drainage valve drive unit according to claim 2 connected to.   The connecting line portion includes a locking member that moves in the up and down direction within the fixed unit portion by operation of the operation portion, and the main body portion is configured such that the connecting line portion is moved with respect to the fixed unit portion by operation of the operation portion. The drain valve drive unit according to claim 3, further comprising a protrusion that contacts the locking member in a state of being pulled up and moves the main body and the valve body upward.   The attachment part of the said fixed unit part and the said drain valve apparatus part is any one of the Claims 1 thru | or 4 provided in the height position lower than the initial water level in the said washing water tank before drainage start. The described drain valve drive unit.   A cleaning water tank apparatus comprising the drain valve driving unit according to any one of claims 1 to 5.   A flush toilet comprising the flush water tank apparatus according to claim 6.

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