WO2012105319A1

WO2012105319A1 - Toilet flush tank

Info

Publication number: WO2012105319A1
Application number: PCT/JP2012/050954
Authority: WO
Inventors: 修平濱田; 雅史深川; 中西　淳
Original assignee: 株式会社Ｌｉｘｉｌ
Priority date: 2011-02-03
Filing date: 2012-01-18
Publication date: 2012-08-09
Also published as: TW201237239A

Abstract

Provided is a toilet flush tank making it possible to stably perform a high-volume flush and a low-volume flush. The toilet flush tank feeds flushing water to a water-flush toilet. This toilet flushing tank has: a tank body (10) for storing flushing water, the bottom of the tank body having a drain outlet (20); a drain valve (22) for opening a drain outlet (2) when an air release valve (58) is in a closed state or in an open state, the drain valve having the air chamber (50) for holding air inside, and an air release valve (58) for lifting and opening to thereby release the air inside the air chamber (50) and cause the flushing water stored inside the tank body (10) to flow into the air chamber (50); and a lifting material (35) for lifting and opening the drain valve (22) in a state in which the air release valve (58) has been closed, or in a state in which the air release valve (58) has been lifted and opened.

Description

Toilet bowl cleaning tank

The present invention relates to a toilet bowl cleaning tank.

As a conventional toilet bowl cleaning tank, two drain valves that open and close the drain port of the tank body are provided, and each is connected to a ball chain. Each ball chain has one float attached thereto. This toilet flushing tank can increase the amount of discharged water at the time of large washing and reduce the amount of discharged water at the time of small washing by changing the height of the float attached to these ball chains.

However, in this toilet cleaning tank, two floats occupy a large space in the tank body. In recent years, since the toilet bowl cleaning tank has been downsized and the space inside the tank body has become narrower, it is not desirable that the two floats occupy the space in the tank body widely.

Therefore, Patent Documents 1 to 4 disclose other conventional toilet bowl cleaning tanks having only one float. The toilet bowl cleaning tank disclosed in Patent Documents 1 and 2 includes a flapper valve divided into an upper valve body and a lower valve body, and two ball chains connected to each of the upper valve body and the lower valve body. And a single float attached to the ball chain connected to the upper valve body. The lower valve body has an air chamber for holding air. In addition, this air chamber cannot hold | maintain air and cannot evacuate air.

Moreover, the toilet bowl washing tank disclosed by patent document 3 is attached to the ball chain, the flapper valve which has an air chamber, the cover part as an air vent valve which opens and closes an air chamber, the ball chain connected to the cover part, and 1 Individual floats.

In this toilet bowl cleaning tank, as shown in FIG. 18, an air chamber 202 is provided in a flapper valve 200 that opens and closes a drain outlet. At all times, the lid portion 204 keeps the opening at the upper end of the air chamber 202 closed by the magnetizing force of the

magnets

206 and 208. The float 212 is attached to the ball chain 210 connected to the lid portion 204.

This toilet flushing tank has a force that lifts the lid 204 from the flapper valve 200 and opens the air chamber 202 rather than a force that pulls up the flapper valve 200 to open against the water pressure of the washing water stored in the tank body. Is strongly set by the magnetizing force of the

magnets

206 and 208.

For this reason, in this toilet bowl cleaning tank, when the ball chain 210 is pulled up, the flapper valve 200 is first lifted to open, and when the ball chain 210 is pulled up further, the lid 204 is opened and the air chamber 202 is opened in the tank body. Wash water flows in.

The flapper valve 200 generates buoyancy because the air chamber 202 is filled with air when the lid portion 204 is closed. For this reason, flapper valve 200 can maintain a valve-open state for a long time, and toilet bowl washing tank can perform large washing which discharges a lot of washing water. On the other hand, when the lid portion 204 is pulled up from the flapper valve 200 and opened after the flapper valve 200 is opened, the air in the air chamber 202 is released and the cleaning water flows into the air chamber 202. For this reason, since the flapper valve 200 does not generate buoyancy and cannot maintain the valve open state for a long time, the toilet bowl cleaning tank executes small washing for discharging a small amount of washing water.

The toilet flushing tank disclosed in Patent Document 4 has one flapper valve, one ball chain connected to the flapper valve, and one float fixed to the ball chain. The flapper valve is provided with an air chamber having an air vent hole. In this flapper valve, the air vent hole can be closed with a plug to hold air in the air chamber, or the plug can be removed to open the air vent hole to allow cleaning water to flow into the air chamber. In this way, the flapper valve can change the buoyancy. For this reason, this toilet bowl washing tank can change the amount of flushing water discharged according to the type of flush toilet bowl to be attached and the like.

Further, Patent Documents 5 and 6 disclose a rotating shaft that pulls up a ball chain connected to a drain valve. The rotating shaft is connected to the cleaning handle and is attached to the tank body so as to be rotatable about an axis. This rotating shaft is provided with a connecting portion at the tip portion for connecting the large cleaning ball chain and the small cleaning ball chain. The toilet bowl cleaning tank having the tank main body to which the rotating shaft is attached performs large cleaning when the rotating shaft is rotated in one direction, and the large cleaning ball chain is pulled up to discharge a large amount of cleaning water. In addition, when the rotating shaft is rotated in the opposite direction, the toilet bowl cleaning tank executes small washing in which the small washing ball chain is pulled up and the washing water having a smaller amount of water than the large washing is discharged.

As shown in FIG. 19, the rotating shaft 312 has a shaft portion 300 connected to the cleaning handle 302 and an arm portion 304 provided separately at the tip of the shaft portion 300. The arm part 304 has a cylindrical part 306. The arm portion 304 is coupled to the shaft portion 300 by the coupling pin 308 in a state where the tip portion of the shaft portion 300 is inserted into the cylindrical portion 306. The rotating shaft 312 can be fixed to the tank wall of the cleaning tank body by a nut 310 fitted to the shaft portion 300.

The arm portion 304 is located on the distal end side of the shaft portion 300 and has a plate-like side wall portion 314 extending downward and a flat plate portion 316 extending in both directions across the axis of the shaft portion 300 from the side wall portion 314. is doing. The flat plate portion 316 has connecting portions 318 and 329 provided at both ends. One connecting portion 318 connects the large cleaning ball chain 322, and the other connecting portion 320 connects the small cleaning ball chain 324.

The rotating shaft 312 can pull up the large cleaning ball chain 322 when the cleaning handle 302 is rotated in the clockwise direction, and can pull up the small cleaning ball chain 324 when the cleaning handle 302 is rotated in the counterclockwise direction.

As another conventional toilet cleaning tank, a cleaning handle provided on the tank wall of the tank body, a rotating shaft connected to the cleaning handle and extending into the tank body, and a drain for opening and closing the drain port of the tank body What is provided with the valve and the pulling-up material which has the flexibility connected between a rotating shaft and a drain valve is known.

This toilet flush tank is generally attached to the outer surface of the right tank wall (so-called right handle specification) when the tank body is viewed from the front. However, it may be difficult to attach the cleaning handle to the right tank wall, for example, because pipes pass right near the right tank wall in an apartment house. In this case, a cleaning handle is attached to the left tank wall (so-called left handle specification).

For this reason, it is necessary to prepare separate drain valves for the right handle specification and the left handle specification. That is, in the case of the right handle specification, the attachment portion that connects the lower end side of the lifting material provided on the drain valve is usually provided on the right side of the center in the left-right direction of the drain valve. Since this drain valve is not compatible with the left handle specification, it is necessary to prepare a drain valve with a mounting portion on the left side of the center in the left-right direction.

However, the left-hand handle specification is extremely 1% less than the right-hand handle specification. Nevertheless, preparing separate drain valves to support the right-hand handle specification and the left-hand handle specification is an inventory management. It is also uneconomical because it becomes complicated and increases costs.

3 and 4 of Patent Document 7 disclose that a cleaning handle can be attached to either the left or right tank wall by providing a pull-up portion of the drain valve at the center of the tank body by a telescopic mechanism. Yes. This drain valve has an attachment portion for connecting a pulling material at the center.

Further, Patent Document 8 discloses a technique in which separate pulling materials are connected to two flapper valves that are vertically overlapped, and the large and small washings are switched by operating a washing handle.

Japanese Patent Laid-Open No. 10-183719 JP 2003-27554 A US Pat. No. 6,263,520 JP 2008-156898 A JP 2009-243097 A JP 2007-46349 A JP 2002-54210 A JP 2002-121799 A

However, in the toilet bowl cleaning tank of Patent Document 3, even if the ball chain is pulled up with the intention of executing small cleaning, if the amount of the lifting operation is insufficient, large cleaning is executed unintentionally.

Further, the toilet bowl cleaning tank of Patent Document 4 is used in such a state after the air vent hole is closed by the plug body or after the plug body is removed from the air vent hole and opened. For this reason, this toilet bowl washing tank cannot vary the amount of the wash water discharged every time toilet bowl washing is performed.

1st invention and 2nd invention are made | formed in view of the said conventional condition, Comprising: The problem which should be solved to provide the toilet bowl washing tank which can perform large washing and small washing stably It is said.

Further, as shown in FIG. 19, since the rotary shaft 312 of Patent Documents 5 and 6 has a large arm portion 304, if this is integrated with the shaft portion 300, a fixing nut 310 is inserted into the shaft portion 300. I can't. For this reason, this rotating shaft 312 comprises the arm part 304 and the shaft part 300 as separate bodies. In this case, the number of parts of the rotating shaft 312 increases and the cost increases. Moreover, the arm part 304 will occupy the space in a tank main body widely. This is not desirable because the toilet bowl cleaning tank has been downsized in recent years and the space inside the tank body has been narrowed.

The third invention has been made in view of the above-described conventional situation, and it is an object to be solved to provide a toilet cleaning tank that can be reduced in size.

Moreover, in the toilet bowl cleaning tank of Patent Document 7, when the drainage valve is provided with a lifting material mounting portion at a position deviated left and right from the center in the left and right direction, both the right handle specification and the left handle specification can be supported. Can not. Further, the toilet flushing tank disclosed in Patent Document 8 cannot be handled by the same drain valve regardless of whether it is a right handle specification or a left handle specification.

The fourth invention has been made in view of the above-described conventional situation, and corresponds to the case where the cleaning handle is the right handle specification or the left handle specification by using the same drain valve. Providing a toilet cleaning tank that can be used is a problem to be solved.

The toilet flushing tank of the first invention is a toilet flushing tank that supplies flush water to a flush toilet,
A tank body for storing washing water and having a drain outlet at the bottom;
An air chamber for holding air inside, and an air vent valve for letting the air in the air chamber to escape and allowing the cleaning water stored in the tank body to flow into the air chamber by opening the valve to open the air chamber. A drain valve that opens the drain port in a state where the valve is closed or opened; and
And a pulling material for pulling up and opening the drain valve in a state where the air vent valve is closed or in a state where the air vent valve is pulled up and opened.

This toilet flushing tank can open the drain valve with the air vent valve closed. In this case, the buoyancy generated by the air filled in the air chamber works so as to maintain the open state of the drain valve. For this reason, since the open state of a drain valve becomes long, the toilet bowl washing tank can perform large washing with a large discharge amount of washing water from the tank body.

Also, this toilet flushing tank can open the drain valve with the air vent valve opened after opening the air vent valve. In this case, the drain valve does not generate buoyancy because the air in the air chamber has escaped and the cleaning water stored in the tank body flows in. For this reason, since the opening state of a drain valve becomes short, the toilet bowl washing tank can perform small washing with little discharge amount of washing water from a tank main part. As described above, when performing the small washing, the toilet flushing tank first opens the air vent valve and opens the drain valve in that state, so that a large washing is performed unintentionally. Can be prevented.

Therefore, the toilet bowl cleaning tank of the first invention can stably perform large washing and small washing.

The toilet flushing tank of the second invention is a toilet flushing tank that supplies flush water to a flush toilet,
A tank body for storing washing water and having a drain outlet at the bottom;
An air chamber for holding air therein, and an air vent valve for allowing the cleaning water stored in the tank body to flow into the air chamber by allowing the air in the air chamber to escape by opening and opening the valve. A drain valve that opens the mouth;
A pulling material that lifts and opens the drain valve;
A float provided so as to be movable along the pulling material;
Fixed to the pulling material on the upper side of the float, the float abuts from below, and a stopper for receiving the buoyancy of the float;
A transmission member provided at a lower position apart from the lower end of the float in contact with the stopper and moving the drain valve downward by receiving the weight of the float when the float descends It is characterized by having.

This toilet flushing tank can open the drain valve with the air vent valve closed. In this case, the buoyancy generated by the air filled in the air chamber works so as to maintain the open state of the drain valve. For this reason, since the open state of a drain valve becomes long, the toilet bowl washing tank can perform large washing with a large discharge amount of washing water from the tank body. When the toilet bowl is subjected to large washing, the toilet valve can be closed by moving the drain valve having buoyancy by the air filled in the air chamber downward by the transmission member receiving the weight of the float.

Also, this toilet flushing tank can perform small washing by opening the air vent valve and drain valve. That is, in the state where the air vent valve is opened, the buoyancy is not generated in the drain valve because the air in the air chamber is removed. For this reason, the drain valve is maintained in the open state only by the buoyancy of the float, the valve open state of the drain valve is shortened, and small washing is performed with a small amount of flushing water discharged from the tank body.

In this way, this toilet flushing tank can be switched between large washing and small washing by using one float as a weight or working as an original float. In addition, by changing the length of the transmission member that receives the weight of the float, it is possible to change the closing timing of the drain valve when the large cleaning is executed. That is, it is possible to change the discharge amount of the cleaning water when the large cleaning is executed.

Therefore, the toilet bowl cleaning tank of the second invention can stably perform large washing and small washing.

Also, this toilet bowl cleaning tank requires only one float, so that the space occupied by the float in the tank body can be reduced, so that it can be made compact.

The toilet bowl cleaning tank of the third invention is a toilet bowl cleaning tank that supplies flush water to a flush toilet bowl,
A tank body for storing washing water and having a drain outlet at the bottom;
A drain valve for opening and closing the drain port;
A first pulling member connected to the drain valve, which raises the drain valve and opens the large valve when performing large washing to drain a large amount of washing water from the drain port;
A second pulling material that is connected to the drain valve and raises the drain valve to open when performing a small cleaning that drains less cleaning water from the drain port than the large cleaning;
Attached to the tank body so as to be rotatable about an axis, and extends into the tank body, the upper portion of the first pulling material is connected to one of both sides sandwiching the axis at the tip, and the other is A shaft portion having a connecting portion connecting the upper portions of the second lifting material, and extending downward from the tip portion of the shaft portion between the first lifting material and the second lifting material hanging down, A rotating shaft having an arm portion that rotates with the rotation of the shaft portion, pulls up the first pulling material when the shaft portion rotates in one direction, and pulls up the second pulling material when the shaft portion rotates in the reverse direction. It is characterized by having.

In this toilet bowl, when the shaft portion is rotated in one direction, the arm portion pulls up the first pulling material, and when the shaft portion is rotated in the reverse direction, the arm portion pulls up the second pulling material. In other words, this toilet bowl cleaning tank has an arm portion extending downward from the tip portion of the shaft portion between the first pulling material and the second pulling material, and by rotating the shaft portion, The tip portion can hook either the first pulling material or the second pulling material to pull up the first pulling material or the second pulling material.

In this way, this toilet flushing tank does not need to connect the first pulling material and the second pulling material apart from each other on both sides with respect to the shaft center of the shaft portion. There is no need to install it. That is, the connection part of a 1st raising material and a 2nd raising material can be provided close. Further, since the arm portion is formed to extend downward from the tip portion of the shaft portion, the connecting portion and the arm portion can be reduced in size, and the space occupied by these in the tank body can be reduced.

Therefore, the toilet bowl cleaning tank of the third invention can be miniaturized.

The toilet bowl cleaning tank of the fourth invention is a toilet bowl cleaning tank for supplying flush water to a flush toilet bowl,
A tank body for storing washing water and having a drain outlet at the bottom;
A rotating shaft attached to the tank body and extending into the tank body;
A pulling material connected to the tip of the rotating shaft;
A drainage valve having an attachment portion for opening and closing the drainage port and connecting the lower end of the pulling material to the right side and the left side of the center in the left-right direction in a front view with respect to the tank body. To do.

This toilet flushing tank can be connected to the right-side mounting part when the handle is attached to the right tank wall. Further, in the case of the toilet handle cleaning tank having a left handle specification in which the cleaning handle is attached to the left tank wall, a pulling material can be connected to the left attaching portion.

Therefore, the toilet flushing tank according to the fourth aspect of the present invention can be used with the same drain valve regardless of whether the washing handle is a right handle specification or a left handle specification.

Also, this toilet flushing tank can reduce the number of types of drainage valves required and reduce costs.

It is a notch figure which shows the toilet bowl washing tank of Example 1. FIG. It is a partial cross section figure which shows the flapper valve of Example 1 and its peripheral part seen from the right side of FIG. It is a disassembled perspective view which shows the flapper valve of Example 1. FIG. It is an expanded sectional view which shows the flapper valve of Example 1 and its peripheral part seen from the right side of FIG. It is a partial cross section figure which shows the rotating shaft of Example 1, and its peripheral part. (A) is a top view which shows the principal part of the rotating shaft of Example 1. FIG. FIG. 4B is a cross-sectional view illustrating the arm portion of the first embodiment. FIG. 3C is a perspective view illustrating a main part of the rotating shaft according to the first embodiment. FIG. 3 is a perspective view illustrating a main part of a rotating shaft according to the first embodiment. It is sectional drawing which shows the connection state of the principal part of the rotating shaft of Example 1, and a ball chain, (A) shows the state which the ball chain hung down from the connection part, (B) shows the ball chain for large washings. Shown in the raised state. It is an enlarged view which shows the connection state of the connection part of Example 1, and a ball chain. It is an enlarged view which shows the connection state of the principal part of the rotating shaft of a comparative example, and a ball chain. FIG. 2 is a partial cross-sectional view showing the flapper valve of Example 1 and its peripheral portion as viewed from the right side of FIG. 1, wherein (I) shows a valve closing state, and (II) shows a valve opening state during large washing Show. FIG. 3 is a partial cross-sectional view showing the flapper valve of Example 1 and its peripheral portion viewed from the right side of FIG. 1, and (III) shows a state in which the weight of the float itself and the buoyancy are balanced during a large cleaning. , (IV) shows a state in which the float moves downward during the large cleaning. FIG. 4 is a partial cross-sectional view showing the flapper valve of Example 1 and its peripheral portion as viewed from the right side of FIG. 1, and (V) shows that the cylinder that receives the weight of the float lowers the flapper valve during large washing The state to move to is shown. FIG. 2 is a partial cross-sectional view showing the flapper valve of Example 1 and its peripheral portion as viewed from the right side of FIG. 1, wherein (I) shows a valve open state during small washing, and (II) shows during small washing. This shows a state where the weight of the float itself and the buoyancy are balanced. FIG. 3 is a partial cross-sectional view showing the flapper valve of Example 1 and its peripheral portion viewed from the right side of FIG. 1, and (III) shows a state where the small cleaning is finished and the valve is closed. It is a notch figure which shows the toilet bowl washing tank of Example 1 changed into the left steering wheel specification. It is the expanded sectional view which showed the flapper valve of Example 2, and its peripheral part, (A) shows the time of execution of small washing | cleaning, (B) has shown the time of execution of large washing | cleaning. It is a partial cross section figure which shows the conventional flapper valve and its peripheral part. The conventional rotating shaft is shown, (A) is an exploded perspective view, (B) is an enlarged view which shows an arm part.

A preferred embodiment of the first invention will be described.

In the first invention, the force required to lift and open the air vent valve can be made smaller than the force required to lift and open the drain valve. In this case, when performing the small cleaning, the drainage valve can be lifted and opened with the air release valve opened after the pulling material is surely lifted and opened.

The air vent valve of the first invention may have an elastic member that imparts an elastic force in the downward valve closing direction. In this case, when the toilet flushing tank performs small washing, after the drain valve is opened, the drain valve moves upwards relatively quickly with respect to the air vent valve by the elastic force of the elastic member, and the air vent valve is It closes automatically. For this reason, the water stop defect at the time of a drain valve closing after that can be prevented. Moreover, it can prevent that the air in an air chamber pushes up an air vent valve and leaks with the elastic force of an elastic member. For this reason, when the toilet flushing tank performs a large washing, buoyancy is generated by the air in the air chamber, and the open state of the drain valve can be stably maintained for a long time. The water can be discharged with a certain amount of water.

Further, the pulling material of the first invention may be composed of a first pulling material directly connected to the drain valve and a second pulling material connected to the air vent valve. In this case, it is possible to perform large cleaning by directly opening the drain valve by pulling up the first pulling material. On the other hand, small cleaning can be performed by pulling up the second pulling material. For this reason, this toilet bowl washing tank can distinguish and perform large washing and small washing reliably.

Further, the pulling material of the first invention may be connected to the air vent valve, and the air vent valve may have a lock device that locks in a closed state. In this case, if the lifting device is pulled up with the locking device locking the air vent valve in the closed state, only the drainage valve is opened and large washing can be performed. Further, when the lifting material is pulled up in a state where the lock device does not lock the air vent valve in the closed state, the drain valve opens after the air vent valve is opened, and small washing can be executed. For this reason, this toilet bowl washing tank can distinguish and perform large washing and small washing reliably.

Also, the air chamber of the first invention can be provided in the lower part of the drainage. In this case, since the air chamber can be provided outside the tank body when the drain valve is closed, the tank body can be downsized.

Next, a preferred embodiment in the second invention will be described.

The transmission member of the second invention may be separate from the drain valve. In this case, the length of the transmission member can be easily changed. By changing the length of the transmission member, it is possible to easily change the timing at which the drain valve starts to close in response to the weight of the float. For this reason, this toilet bowl washing tank can change easily the amount of washing water discharged when large washing is performed.

The drain valve of the second invention may have a guide portion for guiding the pulling material. In this case, the pulling material can be prevented from falling irregularly in the other direction. For this reason, this toilet flushing water can discharge | emit the set amount of washing water appropriately, without the amount of the amount of washing water discharged | emitted being different from the set amount of water.

Next, a preferred embodiment in the third invention will be described.

The arm part of the third invention may have a detachment preventing part for preventing the first pulling material and the second pulling material from coming off from both side surfaces. In this case, it can prevent that a 1st pulling material and a 2nd pulling material remove | deviate outside. For this reason, this toilet bowl washing tank can prevent that a drain part cannot be opened because an arm part cannot pull up these raising materials.

Next, a preferred embodiment in the fourth invention will be described.

The mounting portion of the fourth aspect of the present invention may be symmetric with respect to the center in the left-right direction of the drain valve. In this case, when the cleaning handle is attached to the right tank wall to the right handle specification, or the cleaning handle is attached to the left tank wall to the left handle specification, the tip of the rotary shaft and the opening / closing valve mounting portion The relative positional relationship of is the same except that it is symmetrical. For this reason, in either case of the right handle specification or the left handle specification, the tip of the rotary shaft and the mounting portion of the on-off valve can be similarly connected by a pulling material, and the on-off valve is similarly used during the cleaning operation. Can be opened and closed.

Next, Examples 1 and 2 embodying the toilet bowl cleaning tank of the first to fourth inventions will be described with reference to the drawings.

<Example 1>
The toilet bowl cleaning tank of the first embodiment includes a tank body 10 having an outer tank 12 and an inner tank 14 as shown in FIG. The outer tank 12 includes a bottom portion 16 and a tank wall 18. As shown in FIGS. 1 and 2, the toilet bowl cleaning tank is provided at the bottom of the tank body 10, and has a drain port 20 for discharging the cleaning water stored in the inner tank 14, and a flapper valve that is a drain valve for opening and closing the same. 22. The toilet bowl cleaning tank has an overflow pipe 24 provided in communication with the drain port 20. The overflow pipe 24 rises upward from the bottom inside the inner tank 14.

As shown in FIGS. 3 and 4, the flapper valve 22 has a disc-like valve portion 28 that holds a seal member 26 and a pair of arms 30 that extend from the valve portion 28 in the right direction in FIG. 4. is doing. Each arm 30 has a hook-shaped latching portion 32 provided at an end portion. The pair of latching portions 32 are rotatably locked to a shaft portion 34 provided at the lower portion of the overflow pipe 24. The shaft portion 34 extends outward and protrudes at two locations 180 ° apart in the circumferential direction of the overflow pipe 24. The flapper valve 22 opens and closes the drain port 20 by rotating around the shaft portion 34.

As shown in FIG. 1, the ball chain 35 as a pulling material is composed of a large cleaning ball chain 36 as a first pulling material and a small cleaning ball chain 70 as a second pulling material. . Each of these

ball chains

36 and 70 is composed of balls 38 arranged at a constant pitch and a connecting member 40 made of a wire connecting them.

As shown in FIGS. 1 and 3, the flapper valve 22 is provided with

first attachment portions

42R and 42L to which ball chains 36 for large washing can be attached at two locations on the outer peripheral portion of the valve portion 28. The

first attachment portions

42R and 42L are provided on the right side and the left side that differ by 180 ° in the circumferential direction of the outer peripheral portion of the valve portion 28 in a front view with respect to the tank body 10. As shown in FIG. 3, the first attachment portions 42 R and 42 L are formed in a symmetrical shape with respect to the center in the left-right direction of the flapper valve 22. That is, the first mounting

portions

42R and 42L are formed in a bilaterally symmetric shape with respect to the center of the flapper valve 22 in the left-right direction. Further, the

first attachment portions

42R and 42L engage with the insertion hole 120 through which the connecting member 40 of the ball chain 36 for large washing is inserted, and the upper ball 38 and the lower ball 38 of the inserted connecting member 40. Engaging portion 122. Furthermore, the

first attachment portions

42R and 42L are located at symmetrical positions.

The right first mounting portion 42R is provided with the large washing ball chain 36 when the toilet flushing tank has a right handle specification, that is, when the washing handle 94 is attached to the right tank wall 18. The left first attachment portion 42L is attached with a large washing ball chain 36 when the toilet flushing tank has a left handle specification, that is, when the washing handle 94 is attached to the left tank wall 18. This toilet bowl cleaning tank has a right handle specification, and a large washing ball chain 36 is attached to the first attachment portion 42R. As shown in FIG. 4, the valve seat 44 provided around the opening at the upper end of the drain port 20 is inclined obliquely downward toward the left in the figure. For this reason, the flapper valve 22 is in a closed state, and the valve portion 28 is also inclined obliquely downward in the left direction. That is, in the front view with respect to the tank main body 10, the valve seat 44 and the valve portion 28 in the closed state are inclined obliquely downward toward the front.

The flapper valve 22 has a switching device 46 for switching between execution of large washing and execution of small washing. As shown in FIG. 4, the switching device 46 is attached to the lower portion of the valve portion 28 and has a container 48 that forms an air chamber 50 therein. The air chamber 50 is provided below the flapper valve 22. The container 48 has a tapered shape with an upper part being cylindrical and a lower part tapering downward. Further, the container 48 has an opening 54 opened at the lower end and a pore 55 penetrating the upper portion. As air flows into the air chamber 50 from the pores 55, the washing water filled in the air chamber 50 flows out from the opening 54. The pore 55 is a small hole to the extent that the air is not leaked into the water when the air is held in the air chamber 50.

Further, the switching device 46 includes a housing 47 provided on the upper portion of the valve portion 28, an air vent valve 58, and a spring 60 which is an elastic member. The housing 47 includes a cylindrical tube wall 56 and an upper wall portion 82 that closes the opening at the upper end of the tube wall 56. The cylindrical wall 56 has an inflow port 72 therethrough (see FIG. 3). The air vent valve 58 is housed inside the housing 47 so as to be slidable in the vertical direction in the figure. The air vent valve 58 opens and closes an opening 57 at the upper end of the air chamber 50. The spring 60 is a coil spring that applies an elastic force to the air vent valve 58 in the downward valve closing direction in the figure.

The air vent valve 58 has a disc-like valve portion 64 holding the seal member 62 and a shaft portion 66 having a hollow inside. The shaft part 66 has a second attachment part 68 having an insertion hole 120 and an engagement part 122 (see FIG. 3) at the end part. The lower end portion of the ball chain 70 for small washing is attached to the second attachment portion 68. The second attachment portion 68 is located at the center of the flapper valve 22 in the left-right direction, that is, the center of the tank body 10 in the left-right direction.

As shown in FIGS. 3 and 4, the flapper valve 22 has an annular connecting portion 148 provided at the lower portion of the valve portion 28. The connecting portion 148 is provided with a locking hole 150. On the other hand, the container 48 is provided with a locking claw 152 at the top. For this reason, the container 48 is connected to the lower portion of the valve portion 28 by inserting the upper end portion into the connection portion 148 upward and locking the locking claw 152 in the locking hole 150.

This switching device 46 operates as follows.

When the air vent valve 58 is closed and the flapper valve 22 is opened in a state where air is stored in the air chamber 50, large washing for supplying a large amount of washing water from the toilet flushing tank to the flush toilet is executed. Can do.

On the other hand, when the air vent valve 58 is lifted and opened, the cleaning water flows into the housing 47 from the inlet 72 and further flows into the air chamber 50 through the opening 57 to fill the air chamber 50 with the cleaning water. When the flapper valve 22 is opened in this state, it is possible to execute a small washing for discharging a small amount of washing water from the toilet bowl washing tank to the flush toilet bowl. That is, by opening the air vent valve 58, the flapper valve 22 is switched to small washing. The specific principle of switching will be described later.

The cylindrical cylindrical body 74 as a transmission member receives a weight of a float 84 described later, thereby transmitting a downward force to the flapper valve 22 and moving the flapper valve 22 downward. The cylindrical body 74 is attached to the ball chain 70 with the small washing ball chain 70 inserted therethrough.

The guide portion 76 of the cylindrical body 74 has a pair of plate-shaped guide walls 78 facing each other with the cylindrical body 74 therebetween, and a cylindrical portion 80 provided on the lower side thereof. The cylindrical portion 80 integrally forms an upper wall portion 82 and a fitting portion 154 that protrudes downward from the upper wall portion 82. The fitting portion 154 is provided with a locking claw 156.

On the other hand, the cylindrical wall 56 is provided with a locking hole 158 at a position corresponding to the locking claw 156. The guide portion 76 is attached to the cylindrical wall 56 by fitting the fitting portion 154 inside the cylindrical wall 56 and locking the locking claw 156 in the locking hole 158. In this way, the guide portion 76 is provided on the flapper valve 22. The cylindrical body 74 can transmit a downward force to the flapper valve 22 via the cylindrical portion 80 of the guide portion 76.

The guide portion 76 allows the cylindrical body 74 to tilt in the same direction as the direction in which the small washing ball chain 70 tilts. Further, the guide portion 76 prevents the cylindrical body 74 from inclining in a direction orthogonal to the direction in which the small washing ball chain 70 is inclined. That is, when the cylindrical body 74 tries to tilt in a direction orthogonal to the direction in which the small cleaning ball chain 70 tilts, the guide wall 78 abuts on the cylindrical body 74, so that the cylindrical body 74 can be prevented from tilting. The guide portion 76 has guide portions 160 that are opened outward at the upper end portions of the guide walls 78. These guide portions 160 guide the cylindrical body 74 between the pair of guide walls 78.

As shown in FIGS. 1 and 2, the float 84 is annular and has a hollow portion 86 sealed inside. The cavity 86 holds air. The float 84 has an insertion hole 88 at the center. The float 84 is attached to the ball chain 70 in a state in which the small washing ball chain 70 is inserted through the insertion hole 88 in the vertical direction. The float 84 can slide up and down along the ball chain 70 for small washing.

The ball chain 70 for small washing has a stopper 90 fixed at a predetermined height position. This stopper 90 can adjust the position fixed to the ball chain 70 for small washing up and down. The stopper 90 has a plate shape and has a fixing portion 162. The fixing portion 162 includes an insertion hole 120 provided in the center portion of the stopper 90 and an engaging portion 122. The insertion hole 120 can insert the connecting member 40 of the ball chain 70 for small cleaning.

In the state where the lower end of the cylindrical body 74 is in contact with the cylindrical portion 80 of the guide portion 76, the distance between the upper end of the cylindrical body 74 and the stopper 90 is formed wider than the vertical dimension of the float 84. That is, the cylindrical body 74 is provided on the lower side away from the lower end of the float 84 in contact with the stopper 90 at a set distance. For this reason, the float 84 can move up and down along the ball chain 70 for small washing between the upper end of the cylindrical body 74 and the stopper 90.

The rotary shaft 92 connected to the cleaning handle 94 extends into the tank body 10 as shown in FIG. The rotating shaft 92 has a shaft portion 96 and an arm portion 114. As shown in FIG. 5, the cleaning handle 94 and the rotating shaft 92 are attached to the tank wall 18 by an attachment member 98. The attachment member 98 has a male screw portion 100 and is fixed to the tank wall 18 by screwing a nut 102 into the male screw portion 100.

The shaft portion 96 of the rotary shaft 92 has a square male fitting portion 104 provided at one tip portion and an elastic fitting portion 106 provided on the tip side from the male fitting portion 104. . The cleaning handle 94 includes a rectangular female fitting portion 108 corresponding to the male fitting portion 104 of the shaft portion 96 and a fitting hole 110 into which the fitting portion 106 is fitted. The shaft portion 96 is connected to the cleaning handle 94 by elastically fitting the fitting portion 106 into the fitting hole 110 while fitting the male fitting portion 104 into the female fitting portion 108 of the washing handle 94. Therefore, the shaft portion 96 is fixed to the cleaning handle 94 in the axial direction and the rotational direction. Further, the shaft portion 96 is inserted through an insertion hole provided at the center of the attachment member 98 and extends linearly toward the inside of the tank body 10.

The shaft portion 96 is integrally provided with an arm portion 114 extending downward from the other curved tip portion. The arm portion 114 extends vertically, that is, vertically downward in a normal state. The arm portion 114 has a size that allows the central hole of the nut 102 to pass therethrough. The same applies to the shaft portion 96.

As shown in FIGS. 6C and 7, the shaft portion 96 is a first connecting portion in which the upper part of the large wash ball chain 36 is connected to one of the both sides sandwiching the axis at the other curved end portion. 116 and a second connecting portion 118 to which a small washing ball chain 70 is connected.

As shown in FIGS. 6A, 6C, and 7, the first connecting portion 116 and the second connecting portion 118 are inserted through holes 120 through which the connecting members 40 of the

ball chains

36 and 70 are inserted in the vertical direction. It has an engaging portion 122 that engages the upper ball 38A (see FIG. 8) and the lower ball 38B of the inserted connecting material 40. The

ball chains

36 and 70 are formed by inserting the connecting member 40 into the insertion hole 120 and engaging the upper ball 38 A and the lower ball 38 B with the engaging portion 122, so that the first connecting portion 116 or the second connecting portion 118. It is connected to. The large cleaning ball chain 36 connected to the first connecting portion 116 and the small cleaning ball chain 70 connected to the second connecting portion 118 hang down on both sides of the shaft center 96. It becomes a state.

The arm portion 114 has a plate-like arm main body 124 that extends vertically downward from an intermediate position between the first connecting portion 116 and the second connecting portion 118 to a lower side that is a set distance away. The arm main body 124 has neither the large cleaning ball chain 36 nor the small cleaning ball chain 70 fixed thereto. For this reason, the large cleaning ball chain 36 and the small cleaning ball chain 70 are not normally restrained by the arm body 124.

In a normal state, the large cleaning ball chain 36 hangs down from the first connecting portion 116 along the arm main body 124, and the small cleaning ball chain 70 also hangs down from the second connecting portion 118 along the arm main body 124. When the cleaning handle 94 is rotated in the counterclockwise direction, the shaft portion 96 and the arm portion 114 are rotated in the same direction. Then, the tip end portion 124 A of the arm main body 124 hooks the large cleaning ball chain 36 and pulls up the large cleaning ball chain 36.

The ball chain 36 for large washing directly opens the flapper valve 22 (without passing through the air vent valve 58, that is, without applying the opening force to the air vent valve 58). For this reason, the large washing | cleaning by which the washing water in the tank main body 10 is discharged | emitted in large quantities can be performed. At this time, the ball chain 70 for small washing remains hung from the second connecting portion 118 without being pulled up by the arm body 124.

When the cleaning handle 94 is rotated in the clockwise direction, the shaft portion 96 and the arm portion 114 are rotated in the same direction. Then, the tip end portion 124 A of the arm main body 124 hooks the small cleaning ball chain 70 and pulls up the small cleaning ball chain 70.

The ball chain 70 for small washing opens the air vent valve 58 by pulling it upwards against the elastic force of the spring 60. The force required at this time is set to be smaller than the force necessary to open the flapper valve 22 in the closed state against the water pressure of the washing water in the tank body 10 to open the valve. For this reason, when the ball chain 70 for small washing is pulled up, the air vent valve 58 is first lifted and opened, and then the flapper valve 22 is lifted and opened with the air vent valve 58 opened. When the flapper valve 22 is opened in this way, a small amount of washing water is discharged from the tank body 10 as compared with the large washing, and the small washing can be executed. At this time, the ball chain 36 for large washing is not pulled up by the arm body 124 and remains hanging from the first connecting portion 116.

As shown in FIGS. 6 and 7, the arm portion 114 has a pair of plate-shaped guide walls 128 extending downward from the first connecting portion 116 and the second connecting portion 118 on both side surfaces of the arm main body 124 and facing each other. is doing. The guide walls 128 include a first detachment preventing portion 130 for preventing the large cleaning ball chain 36 from coming off from both side surfaces of the arm main body 124, and a small cleaning ball chain 70 from both side surfaces of the arm main body 124. Constitutes a second detachment preventing portion 132 that prevents the detachment of the detachment to the outside.

The ball chain 36 for large washing hangs down to the rear side of the arm main body 124 in a front view with respect to the tank main body 10. The large cleaning ball chain 36 is caught by the tip of the arm body 124 and pulled up. At this time, the large cleaning ball chain 36 abuts against the inner surface of the guide wall 128, so that the first detachment prevention unit 130 has the large cleaning ball chain 38 that hangs down along the arm body 124. It is possible to prevent deviation from the down position in the left-right direction.

Further, the ball chain 70 for small washing hangs down to the front side of the arm main body 124 in a front view with respect to the tank main body 10. This small washing ball chain 70 is also pulled up by being caught by the tip end portion 124A of the arm body 124. At this time, the small cleaning ball chain 70 abuts against the inner surface of the guide wall 128, whereby the second detachment prevention unit 132 has the small cleaning ball chain 70 hanging down along the arm body 124. It is possible to prevent deviation from the down position in the left-right direction.

Depending on the type and size of the tank body 10, the first connecting portion 116 and the second connecting portion 118 and the attachment position of the flapper valve 22 may be displaced in the axial direction of the shaft portion 96. In this case, if the first detachment prevention portion 130 and the second detachment prevention portion 132 made of the guide wall 128 are not provided, as shown in the comparative example of FIG. The ball chain 70 may come off from the position where the ball chain 70 hangs down along the arm body 124. In this state, even if the arm portion 114 rotates, the tip end portion 124A of the arm main body 124 cannot hook the

ball chains

36 and 70, and the

ball chains

36 and 70 cannot be pulled up. For this reason, the first detachment prevention unit 130 and the second detachment prevention unit 132 are provided to prevent such a state.

In addition, the arm portion 114 became a drooping side during rotation and a third disengagement prevention portion 134 that prevents the large washing ball chain 36 that drooped during rotation from coming off the first connecting portion 116. A fourth detachment preventing portion 136 for preventing the small washing ball chain 70 from being detached from the second connecting portion 118 is provided.

The third detachment prevention part 134 and the fourth detachment prevention part 136 are respectively a cover part 138 that extends downward while being curved along the guide wall 128 from the first connection part 116 or the second connection part 118, and the first connection part 116. Or it has the slit 140 provided in the cover part 138 continuously to the insertion hole 120 of the 2nd connection part 118. As shown in FIG.

As shown in FIG. 8, the cover portion 138 has an outer ball 38 B below the large washing ball chain 36 and the small washing ball chain 70 attached to the first coupling portion 116 and the second coupling portion 118. The shape that covers from.

When attaching the large cleaning ball chain 36 to the first connecting portion 116 and attaching the small cleaning ball chain 70 to the second connecting portion 118, as shown in FIG. The connecting material 40 passes through the slit 140 and is inserted into the insertion hole 120. At this time, the lower ball 38B of each

ball chain

36, 70 is first fitted inside the cover portion 138, and in this state, the connecting member 40 along with the slit 140 together with the upper ball 38A is the first connecting portion. 116 or the second connecting part 118 side. The cover part 138 is provided with an inclined guide part 144 at the lower end for guiding the connecting material 40 toward the slit 140.

The shaft portion 96 has a reinforcing rib 142 extending from the upper end of the arm portion 114 and continuing to the arm main body 124 as shown in FIGS.

Next, the toilet cleaning operation of the toilet cleaning tank having such a configuration will be described.

As shown in FIG. 5, when the cleaning handle 94 is in the neutral position, the flapper valve 22 is in a closed state (see FIG. 11 (I)). In this state, the float 84 is in contact with the stopper 90 upward by buoyancy at a position immersed in water. The air chamber 50 provided in the flapper valve 22 is filled with air.

When the cleaning handle 94 is rotated in this state in the direction in which large cleaning is executed, that is, in the counterclockwise direction, the arm portion 114 rotates in the same direction. Then, the tip end portion 124A of the arm main body 124 hooks a lower portion away from the first connecting portion 116 of the large cleaning ball chain 36 to raise the ball chain 36 by a set distance. At this time, the ball chain 36 is pulled up while being pulled toward the side approaching the overflow pipe 24. As a result, as shown in FIG. 11 (II), the flapper valve 22 is lifted directly by the ball chain 36 and opened. When the flapper valve 22 reaches the set maximum valve opening position, the flapper valve 22 is prevented from further rotation by a stop member (not shown). The opened flapper valve 22 is maintained in an open state by the buoyancy caused by the float 84 immersed in water and the buoyancy of the air chamber 50, and the wash water in the tank body 10 is discharged from the drain port 20. .

The water level W in the tank body 10 falls as the washing water in the tank body 10 is discharged. Then, as shown in FIG. 12 (III), when the water level W drops to a certain distance from the upper end of the float 84, the weight of the float 84 itself and the buoyancy are balanced, and then the float 84 is at the water level W. As it descends, it moves downward along the ball chain 70.

In this situation, the air chamber 50 is filled with air, and buoyancy continues to act. For this reason, as shown in FIG. 12 (IV), even if the float 84 moves downward as the water level W decreases, the flapper valve 22 is held in the open state. The float 84 moves away from the stopper 90 and along the ball chain 70 for small washing.

The float 84 comes into contact with the upper end of the cylindrical body 74 as shown in FIG. When the water level W further decreases, the buoyancy of the float 84 decreases and the weight of the float 84 applied to the cylinder 74 increases.

If the force by which the float 84 pushes the cylinder 74 downward becomes larger than the buoyancy of the air chamber 50, the flapper valve 22 cannot maintain the valve open state. Thereafter, as the water level W decreases, the flapper valve 22 starts to close, and finally closes completely. As a result, the discharge of the washing water from the drain port 20 is stopped.

On the other hand, when the cleaning handle 94 is rotated in the direction in which small cleaning is performed, that is, in the clockwise direction, the arm portion 114 rotates in the same direction. Then, the tip end portion 124 A of the arm main body 124 hooks a lower portion away from the second connecting portion 118 of the ball chain 70 for small washing and lifts the ball chain 70 by the set distance. At this time, the ball chain 70 is pulled up while being pulled away from the overflow pipe 24.

In the state where the flapper valve 22 is closed, the air vent valve 58 of the switching device 46 is lifted upward and opened against the elastic force of the spring 60. Then, the upper end opening 57 of the air chamber 50 is opened, and the tank body 10 is filled with the wash water that has flowed in through the inlet 72.

When the air vent valve 58 is further lifted, the pulling force by the small washing ball chain 70 reaches the flapper valve 22 and the flapper valve 22 is opened. The flapper valve 22 separated from the valve seat 44 moves upwards relatively quickly with respect to the air vent valve 58 by the elastic force of the spring 60. That is, once the air vent valve 58 is opened, it quickly returns to the closed state. In this state, the flapper valve 22 is pulled up by the ball chain 70 for small washing, and then reaches the maximum valve opening position (see FIG. 14I).

When the flapper valve 22 is opened, the cleaning water in the tank body 10 is discharged and the water level W is lowered. As shown in FIG. 14 (II), when the upper portion of the float 84 is slightly exposed from the water surface, the weight of the float 84 itself and the buoyancy are balanced. At this time, unlike the large cleaning, the air chamber 50 is not buoyant because the cleaning water is filled in the air chamber 50 when the small cleaning is performed. For this reason, when the float 84 moves downward as the water level W is lowered, the flapper valve 22 decreases the valve opening for a while and finally sits on the valve seat 44 as shown in FIG. Close completely.

During this time, since the air chamber 50 does not generate buoyancy, the float 84 remains in contact with the stopper 90, that is, maintains a state where a certain distance from the cylinder 74 is maintained. As the water level W decreases, the water level W moves downward. For this reason, when the small cleaning is executed, the time from when the flapper valve 22 is completely opened until the valve is started is short. That is, at the time of the small cleaning, the flapper valve 22 starts to close at an earlier stage than the large cleaning. For this reason, at the time of small cleaning, cleaning with a small discharge amount of cleaning water is executed.

As described above, this toilet flushing tank requires only one float, and the space occupied by the float 84 in the tank body 10 can be reduced. For this reason, the tank main body 10 can be reduced in size.

Further, this toilet flushing tank rotates the rotating shaft 92 in the counterclockwise direction, and does not give the valve opening force to the air vent valve 58 by the large washing ball chain 36 hanging from the rotating shaft 92. The flapper valve 22 can be lifted directly to open. At this time, the buoyancy generated by the air filled in the air chamber 50 works so as to maintain the open state of the flapper valve 22. For this reason, the valve open state of the flapper valve 22 becomes longer, and a large amount of washing water stored in the tank body 10 can be discharged to perform large washing.

Further, this toilet flushing tank rotates the rotating shaft 92 in the clockwise direction, thereby pulling up the small washing ball chain 70 suspended from the rotating shaft 92, first opening the air vent valve 58, and then air vent valve. The flapper valve 22 can be opened with the valve 58 opened. At this time, the air chamber 50 does not generate buoyancy because the cleaning water in the tank body 10 flows therein. For this reason, since the buoyancy of only the float 84 attached to the ball chain 70 for small washing acts on the flapper valve 22, the open state of the flapper valve 22 is shortened, and the discharge amount of the washing water stored in the tank body 10 is reduced. And less cleaning can be performed.

Therefore, the toilet bowl cleaning tank according to the first embodiment can perform large washing and small washing by changing the amount of the wash water discharged. In particular, the toilet cleaning tank is not affected by the amount of lifting operation with respect to the ball chain, and can perform large cleaning and small cleaning stably as intended by the difference in the rotation direction of the rotating shaft 92. .

Further, in this toilet bowl cleaning tank, the cylinder 74 which is a transmission member is configured separately from the flapper valve 22, so that the flapper valve 22 receives the weight of the float 84 by changing the length of the cylinder 74. The timing for starting the valve closing can be easily changed. For this reason, this toilet bowl washing tank can change easily the amount of washing water discharged when large washing is performed.

Further, in this toilet bowl cleaning tank, the switching device 46 has a spring 60 that applies an elastic force in the downward valve closing direction of the air vent valve 58, so that the flapper valve 22 is opened when a small cleaning is performed. Thereafter, the air vent valve 58 is automatically closed. For this reason, the water stop failure when the flapper valve 22 is closed thereafter can be prevented. Further, the elastic force of the spring 60 can prevent the air in the air chamber 50 from leaking by pushing up the air vent valve 58. For this reason, when this toilet flushing tank performs a large washing, buoyancy is generated by the air in the air chamber 50, the flapper valve 22 is kept open for a long time, and the washing water stored in the tank body is kept constant. A stable amount of water can be discharged.

In addition, since this toilet bowl cleaning tank is provided with the air chamber 50 below the flapper valve 22, the air chamber 50 can be disposed outside the inner tank 14, and the tank body 10 can be downsized.

In addition, this toilet flushing tank has a distal end portion 124A of the arm main body 124 that extends vertically downward from the intermediate position between the first connecting portion 116 and the second connecting portion 118 to the lower side by a set distance due to the difference in the rotation direction. Either the cleaning ball chain 36 or the small cleaning ball chain 70 is hooked and pulled up. For this reason, it is not necessary to provide the 1st connection part 116 and the 2nd connection part 118 largely apart on either side, and it can provide in close proximity. Further, since the arm portion 114 is formed to extend downward from the tip portion of the shaft portion 96, the first connecting portion 116, the second connecting portion 118, and the arm portion 114 can be reduced in size, and these are tanks. The space occupied in the main body 10 can be reduced.

Therefore, the toilet bowl cleaning tank of Example 1 can be downsized.

Also, the arm portion 114 can pass through the center hole of the nut 102. For this reason, the arm part 114 and the shaft part 96 can be integrated, the number of parts can be reduced, and the cost can be reduced.

In addition, since the toilet bowl cleaning tank is provided with the first detachment prevention unit 130 and the second detachment prevention unit 132, the large washing ball chain 36 or the small washing ball chain 70 hangs down from the arm body 124. It can prevent that it remove | deviates outside from a state. That is, this toilet bowl cleaning tank can prevent the leading end portion 124A of the arm main body 124 from pulling up the large washing ball chain 36 or the small washing ball chain 70 and causing poor washing.

Further, as shown in FIG. 16, this toilet bowl cleaning tank can correspond to the left handle specification by attaching the cleaning handle 94 to the left tank wall 18. In this case, the lower end of the large washing ball chain 36 hanging from the rotary shaft 92 is attached to the left first attachment portion 42 L provided in the flapper valve 22. The ball chain 70 for small washing is the second attachment portion of the flapper valve 22, which has the lower end at the center position in the left-right direction of the flapper valve 22 and the center position in the left-right direction of the tank body 10, as in the right handle specification. 68.

¡Toilet bowl cleaning tank with left-hand handle specification, the direction of rotating shaft 92 is opposite to the left and right toilet bowl. The large cleaning ball chain 36 is connected to the second connecting portion 118, and the small cleaning ball chain 70 is connected to the first connecting portion 116. Thus, when viewed from the left side of the tank body 10, the cleaning handle 94 can be rotated in the clockwise direction to execute large cleaning, and the counterclockwise rotation can be performed to perform small cleaning. The right handle cleaning handle 94 and the rotating shaft 92 shown in FIG. 1 are the same as the left handle cleaning handle 94 and the rotating shaft 92 shown in FIG.

Thus, in the case of the right handle specification in which the cleaning handle 94 is attached to the right tank wall 18, this toilet bowl cleaning tank attaches the large washing ball chain 36 to the right first attachment portion 42R. Further, when the toilet handle cleaning tank is of a left handle specification in which the cleaning handle 94 is attached to the left tank wall 18, a large cleaning ball chain 36 is attached to the first attachment portion 42 L on the left side. Furthermore, by attaching a small washing ball chain 70 to the second mounting portion 68 at the center position in the left-right direction of the flapper valve 22, both the right handle specification and the left handle specification can be handled using the same flapper valve 22. can do. For this reason, it is possible to reduce costs by reducing the types of flapper valves required.

<Example 2>
The toilet bowl cleaning tank of Example 2 has only one ball chain 35 as a pulling material as shown in FIG. The ball chain 35 is connected to an air vent valve 58, and a float 84 (not shown) is attached thereto. This toilet flushing tank has a lock device 164 for locking the air vent valve 58 to a closed state. Other configurations are the same as those of the first embodiment, and the same configurations are denoted by the same reference numerals and detailed description thereof is omitted.

The lock device 164 locks the air vent valve 58 in a closed state and prevents the valve from opening when the cleaning handle 94 is rotated in the direction in which large cleaning is performed, that is, in the counterclockwise direction. On the other hand, the lock device 164 allows the air vent valve 58 to be opened when the cleaning handle 94 is rotated in the direction in which the small cleaning is performed, that is, in the clockwise direction.

The lock device 164 is provided on the shaft portion 66 of the air vent valve 58, and the protrusion 166 having a pointed upward shape, the groove 168 provided in the housing 47, and the protrusion 166 are brought into contact with each other upward. 166, that is, a contact portion 170 that prevents the air vent valve 58 from moving upward.

When the cleaning handle 94 is rotated in the direction in which large cleaning is executed, that is, in the counterclockwise direction, as shown in FIG. 17B, the protrusion 166 contacts the contact portion 170, and the air vent valve 58 is locked. Thus, the opening of the air vent valve 58 is prevented. For this reason, the flapper valve 22 is opened without applying the opening force to the air vent valve 58. In this case, the air chamber 50 is still filled with air, and buoyancy is generated. For this reason, in the toilet bowl cleaning tank, the open state of the flapper valve 22 becomes long, and a large amount of cleaning water stored in the tank body 10 can be discharged to perform large cleaning.

Further, when the cleaning handle 94 is rotated in the direction in which the small cleaning is performed, that is, in the clockwise rotation direction, as shown in FIG. 17A, the ball chain 35 is pulled up while being pulled away from the overflow pipe 24. The protrusion 166 enters the groove 168 side and relatively moves upward along the groove 166. For this reason, the air vent valve 58 is opened, and then the flapper valve 22 is opened with the air vent valve 58 opened. In this case, buoyancy does not occur because the cleaning water in the tank body 10 flows into the air chamber 50. For this reason, in the toilet bowl cleaning tank, the valve open state of the flapper valve 22 is shortened, the discharge amount of the cleaning water stored in the tank body 10 is reduced, and small cleaning can be executed.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Examples 1 and 2, the transmission member has a cylindrical body, but may be configured in a form other than the cylindrical body. Moreover, you may comprise a cylinder integrally with a flapper valve.
(2) In the first embodiment, the first connecting portion and the second connecting portion are arranged on both sides of the shaft center, but are shifted in the axial direction of the shaft portion or shifted in height. May be.
(3) In the first embodiment, the arm body is composed of a single plate, but it may be composed of two plates for large cleaning and small cleaning.
(4) In Examples 1 and 2, a ball chain is used as the pulling material, but other forms may be used.

10 ... Tank body 20 ... Drain port 22 ... Flapper valve (drain valve)
35, 36, 70 ... Ball chain (lifting material) (36 ... 1st lifting material, 70 ... 2nd lifting material)
42L, 42R ... 1st attachment part (attachment part)
50 ... Air chamber 58 ... Air vent valve 60 ... Spring (elastic member)
74 ... Cylinder (transmission member)
76 ... Guide part 84 ... Float 90 ... Stopper 92 ... Rotating shaft 96 ... Shaft part 114 ...

Arm part

130, 132 ... Detachment prevention part (130 ... 1st removal prevention part, 132 ... 2nd removal prevention part)
164 ... Locking device

Claims

A toilet flushing tank for supplying flush water to a flush toilet,
A tank body for storing washing water and having a drain outlet at the bottom;
An air chamber for holding air inside, and an air vent valve for letting the air in the air chamber to escape and allowing the cleaning water stored in the tank body to flow into the air chamber by opening the valve to open the air chamber. A drain valve that opens the drain port in a state where the valve is closed or opened; and
A toilet flushing tank, comprising: a pulling material that lifts and opens the drain valve in a state where the air vent valve is closed or in a state where the air vent valve is pulled up and opened.
2. The toilet flushing tank according to claim 1, wherein a force required to raise and open the air vent valve is smaller than a force necessary to raise and open the drain valve.
The toilet flushing tank according to claim 1 or 2, wherein the air vent valve has an elastic member for applying an elastic force in a downward valve closing direction.
The toilet cleaning tank according to claim 1 or 2, wherein the pulling material is composed of a first pulling material directly connected to the drain valve and a second pulling material connected to the air vent valve.
3. The toilet flushing tank according to claim 1, wherein the pulling material is connected to the air vent valve, and the air vent valve has a lock device that locks the valve in a closed state.
The toilet bowl according to claim 1 or 2, wherein the air chamber is provided at a lower portion of the drain valve.
A toilet flushing tank for supplying flush water to a flush toilet,
A tank body for storing washing water and having a drain outlet at the bottom;
An air chamber for holding air therein, and an air vent valve for allowing the cleaning water stored in the tank body to flow into the air chamber by allowing the air in the air chamber to escape by opening and opening the valve. A drain valve that opens the mouth;
A pulling material that lifts and opens the drain valve;
A float provided so as to be movable along the pulling material;
Fixed to the pulling material on the upper side of the float, the float abuts from below, and a stopper for receiving the buoyancy of the float;
A transmission member provided at a lower position apart from the lower end of the float in contact with the stopper and moving the drain valve downward by receiving the weight of the float when the float descends And a toilet bowl cleaning tank.
The toilet cleaning tank according to claim 7, wherein the transmission member is separate from the drain valve.
The toilet flushing tank according to claim 7 or 8, wherein the drain valve has a guide portion for guiding the pull-up material.
A toilet flushing tank for supplying flush water to a flush toilet,
A tank body for storing washing water and having a drain outlet at the bottom;
A drain valve for opening and closing the drain port;
A first pulling member connected to the drain valve, which raises the drain valve and opens the large valve when performing large washing to drain a large amount of washing water from the drain port;
A second pulling material that is connected to the drain valve and raises the drain valve to open when performing a small cleaning that drains less cleaning water from the drain port than the large cleaning;
Attached to the tank body so as to be rotatable about an axis, and extends into the tank body, the upper portion of the first pulling material is connected to one of both sides sandwiching the axis at the tip, and the other is A shaft portion having a connecting portion connecting the upper portions of the second lifting material, and extending downward from the tip portion of the shaft portion between the first lifting material and the second lifting material hanging down, A rotating shaft having an arm portion that rotates with the rotation of the shaft portion, pulls up the first pulling material when the shaft portion rotates in one direction, and pulls up the second pulling material when the shaft portion rotates in the reverse direction. A toilet bowl cleaning tank characterized by comprising.
11. The toilet flushing tank according to claim 10, wherein the arm portion has a detachment preventing portion for preventing the first lifting material and the second lifting material from coming off from both side surfaces.
A toilet flushing tank for supplying flush water to a flush toilet,
A tank body for storing washing water and having a drain outlet at the bottom;
A rotating shaft attached to the tank body and extending into the tank body;
A pulling material connected to the tip of the rotating shaft;
A drainage valve having an attachment portion for opening and closing the drainage port and connecting the lower end of the pulling material to the right side and the left side of the center in the left-right direction in front view with respect to the tank body, Toilet bowl to wash.
The toilet flushing tank according to claim 12, wherein the attachment portion has a symmetrical shape with respect to the center in the left-right direction of the drain valve.