Patent Grant
10519640
The present invention relates to a discharge valve operating device, a flush water tank device, and a toilet system, and particularly relates to a discharge valve operating device that performs a valve opening operation of a discharge valve of a flush water tank device that supplies flush water to a toilet, a flush water tank device, and a toilet system.
As a discharge valve operating device that performs a valve opening operation of a discharge valve of a flush water tank device that supplies flush water to a toilet, there has been known a discharge valve operating device in which an operation handle is rotationally operated in a predetermined direction manually, whereby a common rotary winding member is rotationally operated in a predetermined direction, the rotary winding member winds up a single operation wire connected to a discharge valve, and a valve opening operation is performed, as described in Patent Literature 1 (Japanese Patent Unexamined Publication No. 2014-190131).
Further, in a conventional discharge valve operating device described in Patent Literature 2 (Japanese Patent Unexamined Publication No. 2015-196949), there is also known the device that enables a valve opening operation by manually pulling up a single common operation wire linked to a discharge valve by a manual operation unit, and enables a valve opening operation by automatically pulling up a single common operation wire by an electric drive unit.
Further, in the conventional discharge valve operating device described in Patent Literature 2, a pulling-up amount of the operation wire is set to be large when a full-flushing mode in which a flush water amount is large is executed, and the pulling-up amount of the operation wire is set to be smaller than the pulling-up amount in the full-flushing mode when a partial-flushing mode in which the flush water amount is small is executed.
However, in recent years, in order to pursue ease of use of the discharge valve operating device, automation of the valve opening operation of a discharge valve has been realized by electrification of the operation itself of the discharge valve operating device or the like, without sticking to a direct manual operation by a user, and it has been a problem requested to be solved in recent years how to switch a flushing mode with an easy operation to perform a valve opening operation accurately.
Accordingly, the present invention is made to solve the problem requested to be solved in the aforementioned prior art, and has an object to provide a discharge valve operating device that can accurately perform a valve opening operation by switching a flushing mode with an easy operation, a flush water tank device, and a toilet system.
In order to solve the aforementioned problem, the present invention provides a discharge valve operating device configured to perform a valve opening operation of a discharge valve disposed in a flush water tank device configured to supply flush water to a toilet, the discharge valve operating device comprising: a first linking member and a second linking member including respective one ends linked to the discharge valve; a rotary winding device to which respective other ends of the first linking member and the second linking member are linked; and an operation unit configured to rotationally operate the rotary winding device, wherein when the operation unit rotationally operates in a first direction in a first flushing mode, the operation unit is configured to supply flush water from the flush water tank device to the toilet by a first flush water amount by pulling up the discharge valve by a first length by the rotary winding device which winds the first linking member by the first length in the first direction, and
when in a second flushing mode the operation unit rotationally operates in a second direction opposite to the first direction, the operation unit is configured to supply flush water from the flush water tank device to the toilet by a second flush water amount different from the first flush water amount by pulling up the discharge valve by a second length by the rotary winding device which winds the second linking member in the second direction by the second length which is the same as the first length.
According to the invention described above, when the operation unit is simply operated rotationally by the same rotational operation amount in the different direction in accordance with the desired flushing mode at the time of executing each of the first flushing mode and the second flushing mode in which the flush water amounts are different respectively, the flushing mode can be switched to the different flushing mode easily by using the common rotary winding device.
Further, the rotary winding device winds either one of the first linking member or the second linking member by the same amount in accordance with the flushing mode, whereby the valve opening operation of the constant pulling-up amount of the discharge valve can be accurately performed irrespective of the flushing mode, and toilet flushing in the different flushing mode can be easily executed.
In the present invention, it is preferable that the operation unit is an electric operation unit configured to electrically operate the discharge valve, the electric operation unit includes an electric rotating shaft configured to rotationally drive by electric power from an outside, and the electric rotating shaft is linked to the rotary winding device, and the rotary winding device is configured to rotate with a rotation radius larger than a rotation radius of the electric rotating shaft by rotational drive of the electric rotating shaft.
According to the invention described above, when the electric rotating shaft of the electric operation unit is rotationally operated in accordance with the desired flushing mode at the time of executing each of the first flushing mode and the second flushing mode in which the flush water amounts are different respectively, the rotary winding device can be rotated by the same rotation amount in the different direction in accordance with the desired flushing mode with the larger rotation radius than the rotation radius of the electric rotating shaft.
Accordingly, the rotary winding device can automatically wind either one of the first linking member or the second linking member by the same amount in accordance with the flushing mode. Thereby, the valve opening operation of the constant pulling-up amount of the discharge valve can be automatically performed irrespective of the flushing mode, and toilet flushing in the different mode can be easily executed automatically.
Further, the rotary winding device is rotatable with the larger rotation radius than the rotation radius of the electric rotating shaft, so that the rotary winding device can pull up either one of the first linking member or the second linking member with a relatively large pulling-up amount with respect to the rotation angle of the electric rotating shaft.
Consequently, the valve opening operation of the discharge valve can be efficiently performed.
In the present invention, it is preferable that an outer periphery of the rotary winding device includes a first mounting portion and a second mounting portion to which the respective other ends of the first linking member and the second linking member are mounted, and the respective mounting portions are disposed substantially in parallel in a direction of a rotation central axis of the rotary winding device, the first linking member and the second linking member are disposed symmetrically to each other at one side and the other side with respect to a rotation center of the rotary winding device in plan view of the rotary winding device, a standby position of the first mounting portion of the rotary winding device and the other end of the first linking member in a state before start of an electric operation of the electric operation unit is set at a position where the first linking member is wound in advance by a predetermined length along the outer periphery of the rotary winding device in the first direction, and a standby position of the second mounting portion of the rotary winding device and the other end of the second linking member in the state before start of the electric operation of the electric operation unit is set at a position where the second linking member is wound in advance by the predetermined length along the outer periphery of the rotary winding device in the second direction.
According to the invention described above, when the electric rotating shaft of the electric operation unit is rotationally operated in the first direction from the state before start of the electric operation of the electric operation unit first, the rotary winding device rotates in the first direction from the standby state, and the first mounting portion and the second mounting portion move by the first length in the first direction from the standby position. Thereby, the first linking member is further wound by the first length in the first direction from the standby position by the rotary winding device, whereas the second linking member is unwound by the first length in the first direction from the standby position by the rotary winding device.
When the electric rotating shaft of the electric operation unit is rotationally operated in the second direction, the rotary winding device rotates in the second direction from the standby state, and the first mounting portion and the second mounting portion move by the second length which is the same as the first length in the second direction from the standby position. Thereby, the first linking member is unwound by the second length in the second direction from the standby position by the rotary winding device, whereas the second linking member is further wound by the second length in the second direction from the standby position by the rotary winding device.
Accordingly, the rotary winding device can automatically wind either one of the first linking member or the second linking member by the same amount in accordance with the flushing mode smoothly, and the valve opening operation of the constant pulling-up amount of the discharge valve can be automatically performed reliably irrespective of the flushing mode.
Further, the respective mounting portions are disposed substantially in parallel in the direction of the rotation central axis of the rotary winding device. The first linking member and the second linking member are disposed symmetrically to each other at one side and the other side with respect to the rotation center of the rotary winding device in plan view of the rotary winding device, so that even when the rotary winding device rotates in accordance with the flushing mode, the first linking member and the second linking member can move reliably and smoothly without interfering with each other.
In the present invention, it is preferable that a first lever configured to indirectly link the discharge valve and the one end of the first linking member, and a second lever configured to indirectly link the discharge valve and the one end of the second linking member, wherein the first lever includes a first linking portion configured to slidably hold the first linking member and to link the other end of the first linking member engageably and disengageably, and the second lever includes a second linking portion configured to slidably hold the second linking member and to link the other end of the second linking member engageably and disengageably.
According to the invention described above, when the rotary winding device rotates in the first direction from the standby state by the rotational operation in the first direction of the electric operation unit first, the first linking member is wound by the first length by the rotary winding device. Thereby, the first linking member, the first lever and the discharge valve rise by the first length in the state where the one end of the first linking member and the first linking portion are engaged with each other.
At the same time, the second linking member is unwound by the first length by the rotary winding device, and the second linking member lowers by the first length in the state where engagement of the one end of the second linking member and the second linking portion is released.
Thereby, the second lever is not pulled up, but the first lever is pulled up by the first linking member, and the valve opening operation by the first flushing mode of the discharge valve can be accurately executed.
When the rotary winding device rotates in the second direction from the standby state by the rotational operation in the second direction of the electric operation unit, the second linking member is wound by the second length which is the same as the first length by the rotary winding device. Thereby, the second linking member, the second lever and the discharge valve rise in the state where the one end of the second linking member and the second linking portion are engaged with each other.
At the same time, the first linking member is unwound by the second length by the rotary winding device, and the first linking member lowers by the second length in the state where engagement of the one end of the first linking member and the first linking portion is released.
Thereby, only the second lever is pulled up by the second linking member, and the valve opening operation by the second flushing mode of the discharge valve can be accurately executed.
In the present invention, it is preferable that the discharge valve operating device further includes a holding device configured to rotatably hold the rotary winding device, wherein the rotary winding device and the holding device include a rotating angle limiting device configured to limit a rotation angle of the rotary winding device.
According to the invention described above, the rotating angle limiting device that limits the rotation angle of the rotary winding device is provided in the rotary winding device and the holding device, whereby the range of the rotation angle of the rotary winding device which is rotationally operated in the first direction or the second direction in accordance with the flushing mode can be limited within the range of a predetermined angle.
Accordingly, the pulling-up amount of the discharge valve at the time of the valve opening operation can be accurately controlled.
Further, the present invention further provides a flush water tank device including the discharge valve operating device.
According to the invention described above, the flush water tank device that can accurately perform the valve opening operation of the constant pulling-up amount of the discharge valve irrespective of the flushing mode, and can easily execute toilet flushing in the different flushing modes can be provided.
Further, the present invention provides a toilet system including the flush water tank device, and a flush toilet connected to the flush water tank device.
According to the invention described above, the toilet system that can accurately perform the valve opening operation of the constant pulling-up amount of the discharge valve irrespective of the flushing mode, and can easily execute toilet flushing in the different flushing modes can be provided.
According to the discharge valve operating device, the flush water tank device and the toilet system of the present invention, the flushing mode is switched with an easy operation, and the valve opening operation can be performed accurately.
Hereinafter, a discharge valve operating device according to one embodiment of the present invention will be described with reference to the accompanying drawings.
First, based on
As illustrated in
Both left and right sides of the flush water tank device 4 are fixed by a fixing device 6 that fixes a rear end portion of the flush toilet 2 of the toilet system T from a wall back side via a wall W1.
Further, the flush water tank device 4 includes a gravity water supply type water storage tank 8 that is hidden in a back side region of the wall W1, and supplies flush water to the flush toilet 2 by using the gravity for the flush water in the water storage tank 8.
As for the wall-mounted type flush toilet 2, application may be made to a so-called wash-down type toilet in which flush water supplied from the flush water tank device 4 discharges excrement by a drop in a height direction of a bowl portion (not illustrated) in a toilet body 10, or application can be made to flush toilets of various modes such as a so-called siphon type toilet that sucks excrement in a bowl portion (not illustrated) and discharges the excrement at once from a drain trap conduit (not illustrated) by using a siphon action.
Next,
As illustrated in
First, as illustrated in
Details of the water supply valve device 12 are similar to the conventional water supply valve device, so that explanation will be omitted.
Next, as illustrated in
At a time of starting toilet flushing, a pulling-up operation (a valve opening operation) of the discharge valve body 24 is enabled by an electric operation of an electric operation unit 26 (details will be described later) that is an operation unit of the discharge valve operating device 1 of the present embodiment.
Further, as illustrated in
Next, with reference to
Further,
Further,
First, as illustrated in
The electric operation unit 26 contains a DC motor (not illustrated), a gearbox (not illustrated), an actuator (not illustrated) and the like, and includes an electric rotating shaft 26a capable of rotationally driving by electric power from an outside.
Further, in an operation of the electric operation unit 26, a controller (not illustrated) controls drive of the DC motor (not illustrated) and the actuator (not illustrated) and rotational drive of the electric rotating shaft 26a is controlled, based on, for example, a signal which a human sensor (not illustrated) installed in a periphery of the flush toilet 2 sends by sensing, and/or a signal which a user sends by operating a remote controller (not illustrated) or the like.
Further, the electric operation unit 26 is also provided with a return spring (not illustrated) or the like that urges the electric rotating shaft 26a in a direction to reverse the electric rotating shaft 26a to return the electric rotating shaft 26a to an initial position P0 reliably, after the electric rotating shaft 26a rotates by a predetermined rotation angle θ1 from the initial position P0.
Details of a structure of the electric operation unit 26 are similar to the conventional structure, so that explanation will be omitted.
In the present embodiment, a mode including both of the human sensor (not illustrated) and the remote controller (not illustrated) may be adopted, or either one of them is omitted, and based on a signal transmitted from only the other one, the controller (not illustrated) may actuate the electric rotating shaft 26a of the electric operation unit 26.
Next, as illustrated in
Further, the pulley 36 is a rotary winding member including a shaft portion 36a to which the electric rotating shaft 26a of the electric operation unit 26 is linked, and a rotary winding portion 36b in a substantially ring shape that projects outward in a radial direction from the shaft portion 36a.
In an interior of the shaft portion 36a of the pulley 36, a female hole 36c (refer to
Further, in a state where the electric rotating shaft 26a is inserted in the female hole 36c of the shaft portion 36a of the pulley 36, the fastener 38 is fitted in a predetermined position of an outer surface of the shaft portion 36a of the pulley 36 from outside, whereby the shaft portion 36a of the pulley 36 is fixed to the electric rotating shaft 26a, and is prevented from removing in an axial direction.
Further, as illustrated in
Likewise, a projection 44a at one end of the operation wire 44 for partial-flushing mode is linked to a second linking portion (a linking portion 50a) of a second lever (an operation lever 50 for partial-flushing mode) of the discharge valve device 14 which will be described in detail later to be engageable and disengageable.
A mounting hole 36d that is a first mounting portion and a mounting hole 36e (refer to
As illustrated in
Further, as illustrated in
The respective operation wires 40 and 44 are slidable with respect to the respective protective tubes 42 and 46 corresponding to the respective operation wires 40 and 44.
As illustrated in
As illustrated in
Next, in
As illustrated in
Accordingly, as illustrated in
Further, as illustrated in
That is, as illustrated in
Further, as illustrated in
Likewise, as illustrated in
That is, as illustrated in
Further, as illustrated in
Next, as illustrated in
Further, as illustrated in
The guide grooves 36h for limiting rotation and the protrusion 34a for limiting rotation function as a rotating angle limiting device that limits a rotation angle of the pulley 36 when the pulley 36 rotates around the rotation central axis A1.
That is, when the pulley 36 is rotationally operated in the first direction R1 or the second direction R2 in accordance with the flushing mode, the protrusion 34a for limiting rotation abuts on one of end portions in a circumferential direction of the guide groove 36h for limiting rotation, and thereby an angle range in which the pulley 36 is rotatable is limited.
Here, as illustrated in
Further, as illustrated in
That is, as illustrated in
Next, as illustrated in
Further, the discharge valve device 14 includes a discharge port-forming member 52, the discharge valve body 24, a full-flushing control casing 54, a float 56, a partial-flushing control casing 58, a water weight 60, a cam 62, a control casing lid 64, an overflow pipe 66, the operation lever 48 for full-flushing mode, a hook member 68 and the operation lever 50 for partial-flushing mode.
First, as illustrated in
As illustrated in
Further, as illustrated in
At a time of valve opening operation of the full-flushing mode, the operation lever 48 is pulled up by the operation wire 40, whereby the overflow pipe 66 and the discharge valve body 24 rise and the discharge port 22 is opened.
Further, as illustrated in
At a time of a valve opening operation of a partial-flushing mode, the operation lever 50 is pulled up by the operation wire 44, whereby the overflow pipe 66 and the discharge valve body 24 rise with the hook member 68, and the discharge port 22 is opened.
That is, a whole of the overflow pipe 66 and the discharge valve body 24 substantially functions as a discharge valve.
Further, when the water level in the water storage tank 8 exceeds an upper end position of the overflow pipe 66, the excessive flush water is discharged from the inside of the overflow pipe 66 into the discharge port 22 which always communicates with the overflow pipe 66.
Next, as illustrated in
As illustrated in
The float 56 is formed from a material such as expanded polystyrene (EPS) easily affected by a buoyant, so that when a buoyant acts on the float 56 by flush water in the full-flushing control casing 54, the float 56 itself easily rises.
Next, as illustrated in
As illustrated in
A rib 66b on an outer surface of the overflow pipe 66 is capable of abutting on an inner peripheral side upper edge portion 60a of the water weight 60 surrounding the outer surface of the overflow pipe 66 from a lower side when the overflow pipe 66 rises. In a state where the rib 66b of the overflow pipe 66 abuts on the inner peripheral side upper edge portion 60a of the water weight 60, the water weight 60 is also capable of rising integrally with rise of the overflow pipe 66.
Next, as illustrated in
The cam 62 for controlling the water weight does not abut on the overflow pipe 66 normally in the full-flushing mode.
Incidentally, as illustrated in
When the water weight 60 rises with rise of the overflow pipe 66, with a valve opening operation in the full-flushing mode thereafter, the upper end of the cam 62 abuts on a guide portion 64a of the control casing lid 64, and rotates to a rib 68a side (a proximal side) of the hook member 68.
The upper end of the cam 62 abuts on and is hooked on the rib 68a of the hook member 68, and thereby the water weight 60 is suspended without abutting on the outer surface of the overflow pipe 66.
Thereby, a weight of the water weight 60 does not act onto the overflow pipe 66 after valve opening, so that a valve closing operation of the overflow pipe 66 can be delayed.
In the partial-flushing mode, the cam 62 for controlling the water weight abuts on the overflow pipe 66 which is lowering, and thereby a load of the water weight 60 acts on the overflow pipe 66 at a time of valve closing. Thereby, the valve closing operation of the overflow pipe 66 at a time of the partial-flushing mode can be advanced more than the valve closing operation of the overflow pipe 66 at the time of the full-flushing mode.
Next,
As illustrated in
Diameters of the respective through-holes 48b and 50b are set to be larger than diameters of the respective operation wires 40 and 44, and to be smaller than diameters of the respective projections 40a and 44a.
Thereby, the respective operation wires 40 and 44 are slidable in the vertical direction with respect to the respective through-holes 48b and 50b, and the respective projections 40a and 44a do not remove upward in a state engaged with the respective linking portions 48a and 50a from the lower side, when the respective operation wires 40 and 44 rise.
Next, with reference to
First, with reference to
Further,
Further,
Further,
Further,
First, as illustrated in
At this time, for example, when a user instructs a toilet flushing operation in the full-flushing mode by pressing a predetermined operation button (not illustrated) of a remote controller (not illustrated) or the like, or the human sensor (not illustrated) senses the user, a signal thereof is transmitted to the control device (not illustrated).
Subsequently, the electric rotating shaft 26a of the electric operation unit 26 illustrated in
Next, as illustrated in
At this time, as illustrated in
Thereby, as illustrated in
At the same time, the projection 40a of the operation wire 40 is pulled up in a state where the projection 40a is engaged with the linking portion 48a of the operation lever 48 for full-flushing mode.
Thereby, as illustrated in
Further, as illustrated in
At this time, as illustrated in
Further, in the discharge valve device 14 in the state S1 illustrated in
Further, as illustrated in
Consequently, the overflow pipe 66 is smoothly pulled up to the highest position without being influenced by the water weight 60.
Thereby, the discharge valve body 24 smoothly opens, and the flush water in the water storage tank 8 is started to be discharged to the conduit (not illustrated) of the toilet body 4 from the discharge port 22.
As illustrated in
Thereby, as illustrated in
Incidentally, the water level of the flush water in the water storage tank 8 in the state S1 illustrated in
Next, after the state S1 illustrated in
Subsequently, after the discharge valve body 24 is opened for the predetermined time period, the DC motor (not illustrated) of the electric operation unit 26 is actuated again.
Thereby, the electric rotating shaft 26a and the pulley 36 rotate (reverse) by the rotation angle θ1 in the second direction R2 around the rotation central axis A1 and thereafter stop again, and are brought into a state S2 similar to the standby state S0 illustrated in
That is, the operation wire 40 for full-flushing mode from the state S1 illustrated in
Thereby, as illustrated in
At the same time, the projection 40a of the operation wire 40 lowers without engaging with the linking portion 48a of the operation lever 48 for full-flushing mode.
The operation wire 44 for partial-flushing mode from the state S1 illustrated in
Thereby, as illustrated in
At the same time, the projection 44a of the operation wire 44 rises to a vicinity of the linking portion 50a of the operation lever 50 for partial-flushing mode.
At this time, the water level in the water storage tank 8 in the state S2 illustrated in
Further, a water level in the full-flushing control casing 54 in the state S2 illustrated in
Further, a water level in the partial-flushing control casing 58 in the state S2 illustrated in
However, in the state S2 illustrated in
Next, when the water level in the water storage tank 8 further lowers after the state S2 illustrated in
Finally, as illustrated in
Further, as illustrated in
Further, as illustrated in
As illustrated in
As a result of the above, in the full-flushing mode, as illustrated in
Next, an operation at a time of performing the valve opening operation in the partial-flushing mode by using the discharge valve operating device 1 according to the present embodiment will be described with reference to
Further,
Further,
Further,
Furthermore,
First, as illustrated in
On this occasion, for example, when a user instructs a toilet flush operation in the partial-flushing mode by pressing a predetermined operation button (not illustrated) of the remote controller (not illustrated) or the like, or the human sensor (not illustrated) senses the user, a signal thereof is transmitted to the control device (not illustrated).
Subsequently, the electric rotating shaft 26a of the electric operation unit 26 illustrated in
Next, as illustrated in
At this time, as illustrated in
Thereby, as illustrated in
At the same time, the projection 44a of the operation wire 44 is pulled up in a state where the projection 44a is engaged with the linking portion 50a of the operation lever 50 for partial-flushing mode.
Consequently, as illustrated in
Further, as illustrated in
Therefore, in the partial-flushing mode, the discharge valve body 24 also opens smoothly by a similar operation to the operation in the full-flushing mode, and the flush water in the water storage tank 8 is started to be discharged into the channel (not illustrated) of the toilet body 4 from the discharge port 22.
As illustrated in
Thereby, as illustrated in
At the same time, the projection 40a of the operation wire 40 lowers without engaging with the linking portion 48a of the operation lever 48 for full-flushing mode.
Therefore, in the start state S4 in the partial-flushing mode, the operation lever 48 for full-flushing mode is not pulled up by the operation wire 40 itself for full-flushing mode.
However, as illustrated in
Further, in the discharge valve device 14 in the state S4 illustrated in
Here, the cam 62 of the water weight 60 in the partial-flushing control casing 58 of the discharge valve device 14 in the state S4 illustrated in
However, in the partial-flushing mode in the state S4 illustrated in
Therefore, the upper end of the cam 62 is not hooked on the rib 68a of the hook member 68, and is in a state where the upper end abuts on the outer surface of the overflow pipe 66.
In a state halfway through valve opening before reaching the state S4 illustrated in
Further, in the state S4 illustrated in
Next, after the state S4 illustrated in
Subsequently, after the discharge valve body 24 opens for the predetermined time period, the DC motor (not illustrated) of the electric operation unit 26 is actuated again.
Thereby, the electric rotating shaft 26a and the pulley 36 rotate (reverse) by the rotation angle θ1 in the first direction R1 around the rotation central axis A1 and thereafter stop again, and are in a state S5 similar to the standby state S0 illustrated in
That is, the operation wire 44 for partial-flushing mode from the state S4 illustrated in
Thereby, as illustrated in
At the same time, the projection 44a of the operation wire 44 lowers without engaging with the linking portion 50a of the operation lever 50 for partial-flushing mode.
The operation wire 40 for full-flushing mode from the state S4 illustrated in
Thereby, as illustrated in
At this time, the projection 40a of the operation wire 40 does not engage with the linking portion 48a of the operation lever 48 for full-flushing mode, and is separated downward from the linking portion 48a.
Further, the water level in the water storage tank 8 in the state S5 illustrated in
At this time, the water level in the partial-flushing control casing 58 in the state S5 illustrated in
Further, in the state S5 illustrated in
Next, when the water level in the water storage tank 8 further lowers after the state S5 illustrated in
Finally, as illustrated in
Further, as illustrated in
As illustrated in
As a result of them, in the partial-flushing mode, as illustrated in
According to the discharge valve operating device 1 according to one embodiment of the aforementioned present invention, when the electric rotating shaft 26a of the electric operation unit 26 is simply operated rotationally by the same rotation operation amount θ1 in the different direction R1 or R2 in accordance with a desired flushing mode at a time of executing the full-flushing mode and the partial-flushing mode in which the flush water amounts differ from each other, the flushing mode can be easily switched to the different flushing mode by using the rotary winding portion 36b of the common pulley 36.
Further, the rotary winding portion 36b winds either one of the operation wire 40 for full-flushing mode or the operation wire 44 for partial-flushing mode by the same amount α1 or α2 in accordance of each of the flushing modes, whereby the valve opening operation of the constant pulling-up amount H1 of the discharge valve body 24 can be accurately performed irrespective of the flushing mode, and toilet flushing in the different flush modes can be easily executed.
Further, according to the discharge valve operating device 1 according to the present embodiment, when the electric rotating shaft 26a of the electric operation unit 26 is rotationally operated in accordance with the desired flushing mode when each of the full-flushing mode and the partial-flushing mode in which the flush water amounts differ respectively is executed, the rotary winding portion 36b of the pulley 36 can be rotated by the same rotation amount in the different direction R1 or R2 in accordance with the desired flushing mode with a rotation radius larger than the rotation radius of the electric rotating shaft 26a.
Accordingly, the rotary winding portion 36b of the pulley 36 can automatically wind up either one of the operation wire 40 for full-flushing mode or the operation wire 44 for partial-flushing mode in accordance with the flushing mode by the same amount α1 or α2. Thereby, irrespective of the flushing mode, the valve opening operation of the discharge valve body 24 of the constant pulling-up amount H1 can be performed automatically, and toilet flushing in the different flushing modes can be easily executed automatically.
Further, the rotary winding portion 36b of the pulley 36 is rotatable with the larger rotation radius than the rotation radius of the electric rotating shaft 26a, so that the rotary winding portion 36b of the pulley 36 can pull up either one of the operation wire 40 for full-flushing mode or the operation wire 44 for partial-flushing mode by a relatively large pulling-up amount with respect to the rotation angle θ1 of the electric rotating shaft 26a.
Consequently, the valve opening operation of the discharge valve body 24 can be efficiently performed.
Furthermore, according to the discharge valve operating device 1 according to the present embodiment, when the electric rotating shaft 26a of the electric operation unit 26 is rotationally operated in the first direction R1 from the standby state S0 before start of the electric operation of the electric operation unit 26 first, the rotary winding portion 36b of the pulley 36 rotates in the first direction R1 from the standby state S0, and the respective mounting holes 36d and 36e move by the first length α1 in the first direction R1 from the standby position P0.
Thereby, the operation wire 40 for full-flushing mode is further wound by the first length α1 in the first direction R1 from the standby position P0 by the rotary winding portion 36b, whereas the operation wire 44 for partial-flushing mode is unwound by the first length α1 in the first direction R1 from the standby position P0 by the rotary winding portion 36b.
When the electric rotating shaft 26a of the electric operation unit 26 is rotationally operated in the second direction R2 which is opposite to the first direction R1, the rotary winding portion 36b rotates in the second direction R2 from the standby state S0, and the respective mounting holes 36d and 36e move by the second length α2 which is the same as the first length α1 in the second direction R2 from the standby position P0.
Thereby, the operation wire 40 for full-flushing mode is unwound by the second length α2 in the second direction R2 from the standby position P0 by the rotary winding portion 36b, whereas the operation wire 44 for partial-flushing mode is further wound by the second length α2 in the second direction R2 from the standby position P0 by the rotary winding portion 36b.
Accordingly, the rotary winding portion 36b can automatically wind either one of the operation wire 40 for full-flushing mode or the operation wire 44 for partial-flushing mode smoothly by the same amounts α1 and α2 in accordance with the flushing mode, and the valve opening operation of the constant pulling-up amount H1 of the discharge valve body 24 can be automatically performed reliably irrespective of the flushing mode.
Further, the respective mounting holes 36d and 36e are disposed substantially in parallel in the direction of the rotation central axis A1 of the rotary winding portion 36b. Further, the operation wire 40 for full-flushing mode and the operation wire 44 for partial-flushing mode are disposed symmetrically to each other at one side and the other side with respect to the rotation central axis A1 in plan view of the rotary winding portion 36b as illustrated in
Further, according to the discharge valve operating device 1 according to the present embodiment, when the rotary winding portion 36b of the pulley 36 is rotated in the first direction R1 from the standby state S0 first by the rotational operation in the first direction R1 of the electric rotating shaft 26a of the electric operation unit 26, the operation wire 40 for full-flushing mode is wound by the first length α1 by the rotary winding portion 36b.
Thereby, in the state where the projection 40a at one end of the operation wire 40 for full-flushing mode and the linking portion 48a of the operation lever 48 for full-flushing mode are engaged with each other, the operation wire 40, the operation lever 48 for full-flushing mode, the overflow pipe 66 and the discharge valve body 24 rise by the first length α1.
At the same time, the operation wire 44 for partial-flushing mode is unwound by the first length α1 by the rotary winding portion 36b.
Thereby, the operation wire 44 lowers by the first length α1 in the state where engagement of the projection 44a at one end of the operation wire 44 for partial-flushing mode and the linking portion 50a of the operation lever 50 for partial-flushing mode is released.
Thereby, the operation lever 50 for partial-flushing mode is not pulled up, but the operation lever 48 for full-flushing mode is pulled up by the operation wire 40, and the valve opening operation in the full-flushing mode of the discharge valve body 24 can be accurately executed.
When the rotary winding portion 36b rotates in the second direction R2 from the standby state S0 by the rotational operation in the second direction R2 of the electric rotating shaft 26a of the electric operation unit 26, the operation wire 44 for partial-flushing mode is wound by the second length α2 which is the same as the first length α1 by the rotary winding portion 36b. Thereby, the operation wire 44, the operation lever 50 for partial-flushing mode, the overflow pipe 66 and the discharge valve body 24 rise in the state where the projection 44a at one end of the operation wire 44 and the linking portion 50a of the operation lever 50 for partial-flushing mode are engaged with each other.
At the same time, the operation wire 40 for full-flushing mode is unwound by the second length α2 by the rotary winding portion 36b, and the operation wire 40 lowers by the second length α2 in the state where engagement of the projection 40a at one end of the operation wire 40 and the linking portion 48a of the operation lever 48 for full-flushing mode is released.
Thereby, the operation lever 50 for partial-flushing mode is pulled up by the operation wire 44, and the valve opening operation in the partial-flushing mode of the discharge valve body 24 can be accurately executed.
Further, according to the discharge valve operating device 1 according to the present embodiment, the guide groove 36h for limiting rotation of the rotary winding portion 36b of the pulley 36 and the protrusion 34a for limiting rotation of the upper casing 34 function as the rotating angle limiting device that limits the rotation angle θ1 of the rotary winding portion 36b of the pulley 36.
Thereby, the range of the rotation angle θ1 of the rotary winding portion 36b which is rotationally operated in the first direction R1 or the second direction R2 in accordance with the flushing mode can be limited within the range of a predetermined angle (for example, θ1=83.5[°]).
Accordingly, the pulling-up amount H1 of the discharge valve body 24 at the time of the valve opening operation can be accurately controlled.
Further, according to the discharge valve operating device 1 according to the present embodiment, the flush water tank device 4 can be provided, which can accurately perform the valve opening operation of the constant pulling-up amount H1 of the discharge valve body 24 irrespective of the flushing mode, and can easily execute toilet flushing in the different flushing modes.
Further, according to the discharge valve operating device 1 according to the present embodiment, the toilet system T can be provided, which can accurately perform the valve opening operation of the constant pulling-up amount H1 of the discharge valve body 24 irrespective of the flushing mode, and can easily execute toilet flushing in the different flushing modes.
In the discharge valve operating device 1 according to the aforementioned present embodiment, the mode that is applied to the flush water tank device 4 which is hidden on the back side of the wall W1, and performs the valve opening operation of the discharge valve device 14 by the electric operation of the electric operation unit 26 is adopted.
However, the discharge valve operating device 1 according to the present embodiment is also applicable to a flush water tank device which is not hidden in the back of the wall or the like.
Further, the rotational operation of the pulley 36 is not limited to the electric operation by the electric operation unit 26, but a handle or the like linked to the pulley 36 may be rotationally operated manually.
Further, in the discharge valve operating device 1 according to the present embodiment described above, the mode capable of toilet flushing by the two kinds of flushing modes of full flushing and partial flushing by using the two operation wires 40 and 44 is described.
However, toilet flushing, for example, by three kinds of full, medium and partial flushing modes, or by four kinds or more flushing modes can be enabled by properly changing only the structure of the discharge valve device 14 without changing the discharge valve operating device 1 and the two operation wires 40 and 44 of the present embodiment.
Further, in the discharge valve operating device 1 of the present embodiment described above, as the means for limiting the rotation angle of the pulley 36, the mode in which the protrusion 34a for limiting rotation of the upper casing 34 is set as the male side, and the guide groove 36h for limiting rotation of the rotary winding portion 36b is set as the female side is described, but the male side and the female side may be replaced with each other.
Further, such a mode may be adopted that limits the rotation angle by providing protrusions or the like that can abut on each other when the pulley rotates a predetermined angle, for both the pulley and the casing which rotatably holds the pulley.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2017-014683 | Jan 2017 | JP | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 4969218 | Comparetti | Nov 1990 | A |
| 5669082 | Sun | Sep 1997 | A |
| 5960482 | Chang | Oct 1999 | A |
| 20140123378 | Luettgen | May 2014 | A1 |
| Number | Date | Country |
|---|---|---|
| 2651312 | Oct 2004 | CN |
| Number | Date | Country | |
|---|---|---|---|
| 20180216329 A1 | Aug 2018 | US |
