JP2012162924A - Discharge device for washing water in tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge device for washing water in a tank for requiring only one float, reducing a space in the washing tank to be occupied by the float, and enabling stable large-quantity flushing and small-quantity flushing as intended without depending on how is a control input to pull a ball chain up.SOLUTION: The discharge device for washing water in the tank includes a flapper valve 22, a lever arm, an air chamber 50 provided in the flapper valve 22, an air vent valve 58 to be opened with upper-side pulling force for removing air from the air chamber 50 to introduce water to the inside, a ball chain for directly pulling the flapper valve 22 up to open it with the rotation of the lever arm in one direction and for pulling the flapper valve 22 up via the air vent valve 58 to open it with the rotation thereof in the other direction, and a float mounted on the ball chain. In this case, during the rotation in the other direction, force required for the ball chain to open the air vent valve 58 is set to be smaller than force required to open the flapper valve 22.

Description

  The present invention relates to an in-tank wash water discharge device that discharges wash water stored in a wash tank from a drain port at the bottom of the tank toward a toilet.

  Conventionally, this type of tank wash water discharge device has been provided with two flapper valves as drain valves, each connected to a ball chain (pulling material), and floated to each ball chain corresponding to each flapper valve. Are attached individually, and the height position of each float is made different so that the amount of discharged water at the time of large washing differs from the amount of discharged water at the time of small washing.

However, in this case, two floats are required for one tank wash water discharge device, and the internal space of the wash tank is widely occupied by the two floats.
In recent years, as the cleaning tank has been reduced in size and the internal space has been reduced accordingly, it is not desirable that the two floats occupy a large space in the cleaning tank.

On the other hand, the flapper valve is divided into an upper valve body and a lower valve body, and an air chamber (buoyancy chamber) for holding air is provided in the lower valve body, and a ball chain (lifting material) is provided for the upper valve body and the lower valve body. Patent Document 1 below discloses a structure in which a float is attached to a ball chain connected to each other and connected to an upper valve body.
Although the thing disclosed in this patent document 1 has one float, this thing does not have a mechanism for holding air in the air chamber or drawing air.
The same type is also disclosed in Patent Document 2 below.

  On the other hand, in Patent Document 3 below, an air chamber is provided in the flapper valve, a lid portion as an air vent valve for opening and closing the air chamber is provided, and a ball chain (a pulling material) is connected to the lid portion. The thing of the form which attached the float is disclosed.

FIG. 17 shows a specific example.
In the figure, reference numeral 200 denotes a flapper valve that opens and closes a drain port. The flapper valve 200 is provided with an air chamber 202.
Reference numeral 204 denotes a lid that opens and closes the air chamber 202, and is normally held in a closed state by the attractive force of the magnets 206 and 208, that is, a state in which the opening at the upper end of the air chamber 202 is closed.
Reference numeral 210 denotes a ball chain connected to the lid portion 204, and a float 212 is attached to the ball chain 210.

  In the tank flush water discharge device shown in FIG. 17, the lid 204 is removed from the flapper valve 200 more than the force required to lift and open the flapper valve 200 against the pressure of the wash water inside the tank. The force for lifting and opening the air chamber 202 is set stronger.

  Therefore, in this tank cleaning water discharge device, when the ball chain 210 is lifted upward, the flapper valve 200 is first lifted and opened, and when the ball chain 210 is further lifted upward from this state, the lid 204 is opened. Then, the water in the tank flows into the air chamber 202.

Under the state where the flapper valve 200 is opened and the lid portion 204 is closed, air is held in the air chamber 202 and buoyancy is exerted, so that large washing is performed under this state.
On the other hand, under the state where the lid portion 204 is further lifted from this state and the air chamber 202 is opened, buoyancy does not act on the air chamber 202, and therefore, small washing is performed under this state.

  However, in the case of the tank cleaning water discharge device shown in FIG. 17, even if the ball chain 210 is pulled up with the intention of performing small cleaning, if the operation amount of the lifting is insufficient, large cleaning is performed contrary to the intention. There is a problem.

JP-A-10-183719 JP 2003-27554 A US Pat. No. 6,263,520

  The present invention is based on the circumstances as described above, and only one float is required. The space occupied by the float in the washing tank can be reduced, and it is not affected by the amount of lifting operation with respect to the lifting material. The purpose of the present invention is to provide an apparatus for discharging cleaning water in a tank that can stably perform large washing and small washing as described above.

  Accordingly, the first aspect of the present invention is a tank wash water discharge device for discharging the wash water stored in the wash tank from the drain port at the bottom of the tank toward the toilet bowl, wherein: A flapper valve that opens and closes the opening; (b) a lever arm that extends into the tank; (c) an air chamber that is provided in the flapper valve and holds air therein; and (d) the air chamber. A valve that opens and closes, is opened by a pulling force upward, an air vent valve that draws out air in the air chamber and allows water in the tank to flow into the air chamber, and (e) hangs down from the lever arm, By rotating the lever arm in one direction, the flapper valve is lifted and opened without applying the opening force to the air vent valve, and by rotating in the other direction, the air vent valve is allowed to open. Pulling material that pulls up and opens the flapper valve And (f) a float attached to the pull-up material, and a force required to open the air vent valve with the pull-up material when rotating in the other direction causes the flapper valve to open. It is smaller than the force required to open the valve, and the flapper valve is pulled up with the opening of the air vent valve.

  According to a second aspect of the present invention, in the first aspect, an urging member having elasticity that urges the air vent valve in a downward valve closing direction is provided.

  According to a third aspect of the present invention, in any one of the first and second aspects, the lifting member is connected to the first pulling member directly connected to the flapper valve, to the air vent valve, and the float is attached. 2 pull-up material.

  According to a fourth aspect of the present invention, in any one of the first and second aspects, the lifting member is integrated into one, the float is attached to the lifting member, the lifting member is connected to the air vent valve, and the lever While the arm rotates in the other direction, the air vent valve is allowed to open, and when the arm rotates in the one direction, the air vent valve is locked to prevent the valve from opening.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the air chamber is provided below the flapper valve.

Effects and effects of the invention

According to the present invention described above, only one float is necessary, and the space occupied by the float in the tank can be reduced.
In the present invention, the rotation of the lever arm in one direction causes the flapper valve to be opened by pulling up the flapper valve without applying the opening force to the air vent valve by the pulling material hanging from the lever arm. Buoyancy can be generated in the air chamber and this can act as a second float.
Under this condition, it is possible to lengthen the time until the flapper valve is closed, and it is possible to perform large cleaning by discharging a large amount of the cleaning water in the tank.

In the present invention, the rotation of the lever arm in the other direction allows the flapper valve to be pulled up through the air vent valve in a state in which the air vent valve is allowed to open. The force required to valve the valve is set to be smaller than the force required to open the flapper valve against the pressure of the wash water in the tank, so when the lever arm is rotated in the other direction The air vent valve is first opened before the flapper valve is opened, and the flapper valve is opened thereafter with the opening of the air vent valve.
In this case, the water in the tank flows into the air chamber provided in the flapper valve, and the air chamber loses its function as the second float.
In this case, since only the float attached to the pulling material generates buoyancy, the flapper valve closes quickly after opening, and the amount of washing water discharged from the tank is reduced. That is, at this time, a small cleaning is performed.
In the present invention, large cleaning and small cleaning can be stably performed as intended by the user, depending on the difference in the rotation direction of the lever arm, regardless of the amount of pulling operation of the pulling material.

In the present invention, an urging member having elasticity for urging the air vent valve in the downward valve closing direction can be provided (claim 2).
In this way, when the lifting operation with the lifting material is completed at the time of small cleaning, the air vent valve is automatically closed by the urging member, so the water stop failure after the flapper valve is closed Can be prevented.
Also, during large cleaning, air in the air chamber can be prevented from leaking by pushing up the air vent valve, which stabilizes the buoyancy acting on the air chamber, and ensures that the cleaning water is supplied with a constant and stable amount of water during large cleaning. It becomes possible to discharge.

In the present invention, the pulling material may include the first pulling material directly connected to the flapper valve and the second pulling material connected to the air vent valve and attached with the float. (Claim 3).
In this case, the flapper valve can be opened directly by pulling up the first pulling material and large cleaning can be performed, while small cleaning can be performed by pulling up the second pulling material different from the first pulling material. The large cleaning and the small cleaning can be reliably distinguished and can be performed by switching.

Next, according to the fourth aspect of the present invention, there is provided a single lifting material, a float is attached to the lifting material, the lifting material is connected to the air vent valve, and when the lever arm rotates in the other direction, the air vent valve is allowed to open. A lock mechanism that prevents the valve from opening when the air vent valve is locked at the time of rotation in the one direction is provided. Even in this case, large washing and small washing can be reliably switched and executed.
According to the fourth aspect of the present invention, the discharge device of the in-tank cleaning device can be configured by using only one necessary lifting material.

In this invention, the said air chamber can be provided in the lower part of the flapper valve (Claim 5).
According to the fifth aspect, the air chamber can be arranged outside the tank, and the cleaning tank can be downsized.

It is the figure which showed the discharge apparatus of the wash water in the tank of embodiment of this invention with the wash tank etc. It is the figure which showed the flapper valve of FIG. 1, and its peripheral part. It is the perspective view which decomposed | disassembled and showed the flapper valve and peripheral part of FIG. 2 to each component. It is the figure which expanded and showed the flapper valve of FIG. 2, and its peripheral part. It is the figure which showed the lever arm and peripheral part in the same embodiment. It is the figure which expanded and showed the principal part of the lever arm, respectively. It is the figure which showed the principal part of the lever arm in the direction different from FIG. It is the figure which showed the connection relation between the principal part of the lever arm, and a ball chain. It is action | operation explanatory drawing of the principal part of the lever arm. It is the comparative example figure which showed the comparative example, in order to demonstrate the advantage of the lever arm. It is operation | movement explanatory drawing of a flapper valve, a float, etc. at the time of large washing | cleaning. FIG. 12 is an operation explanatory diagram following FIG. 11. FIG. 13 is an operation explanatory diagram following FIG. 12. It is operation | movement explanatory drawing of a flapper valve, a float, etc. at the time of small washing | cleaning. FIG. 15 is an operation explanatory diagram following FIG. 14. It is a figure of other embodiment of this invention. It is the figure which showed an example of the discharge apparatus of the conventional tank wash water.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, reference numeral 10 denotes a cleaning tank (hereinafter simply referred to as a tank) having an outer tank 12 and an inner tank 14.
In the figure, 16 represents the bottom of the tank 10 and 18 represents the tank wall.
As shown in FIG. 2, the bottom 16 of the tank 10 is provided with a drain port 20 for discharging the internal wash water toward the toilet and a flapper valve 22 as a drain valve for opening and closing the drain port.
In FIG. 2, reference numeral 24 denotes an overflow pipe provided in communication with the drain port 20, and rises upward from the bottom 16 inside the tank 10.

As shown in detail in FIGS. 3 and 4, the flapper valve 22 includes a disk-shaped valve portion 28 that holds a seal member 26, and a pair of arms 30 that extend rightward in the drawing. Yes.
A hook-shaped hook 32 is provided at the right end of each of the arms 30 in the drawing, and the pair of hooks 32 protrude from two locations separated by 180 ° in the circumferential direction of the overflow pipe 24. The shaft portion 34 is rotatably hooked downward.
The flapper valve 22 opens and closes by rotating around the shaft portion 34 based on the hook of the hook portion 32 with respect to the shaft portion 34.

In FIG. 1, reference numeral 35 denotes a ball chain as a lifting material, and this ball chain 35 is composed of a large cleaning ball chain (first lifting material) 36 and a small cleaning ball chain (second lifting material) 70. ing.
Each of the large cleaning ball chain 36 and the small cleaning ball chain 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 valve portion 28 of the flapper valve 22 has a ball at two positions on the outer peripheral portion, specifically, a right position and a left position that differ by 180 ° in the circumferential direction when viewed from the front with respect to the tank 10. Attachment portions 42R and 42L of the chain 36 are provided.
As shown in FIG. 3, each of the attachment portions 42R and 42L is engaged with the insertion hole 120 through which the connecting material 40 is inserted, and the upper ball 38 and the lower ball 38 of the inserted connecting material 40. Engaging portion 122.

The right attachment portion 42R is for the right handle, that is, the attachment portion for the right handle when a later-described washing handle 94 is attached to the right side of the tank 10 when viewed from the front, and the attachment portion 42L is provided with the washing handle 94. This is an attachment portion for the left handle when attached to the left side of the tank 10.
Here, the ball chain 36 for large washing is attached to the attachment portion 42R for the right handle.
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, and therefore the flapper valve 22 is closed. In this state, the valve portion 28 is also inclined obliquely downward toward the left.

In FIG. 4, reference numeral 46 denotes a switching mechanism that switches the operation of the flapper valve 22 to a small washing operation. The switching mechanism 46 has an air chamber 48 provided in the flapper valve 22 below the valve portion 28. The air chamber 48 forms an air chamber 50 inside.
The air chamber 48 has a tapered portion 52 whose lower portion tapers downward. The lower end of the taper portion 52 is an opening 54, and a penetrating pore 55 is provided in the upper portion.
Here, the pore 55 is a hole for introducing air into the air chamber 50 when water filling the inside of the air chamber 50 is drawn from the opening 54.
The pores 55 are small enough to prevent the internal air from leaking into water under the condition that the air is held in the air chamber 50.

  The switching mechanism 46 is also housed in a housing 47 having a cylindrical tube wall 56 and an upper wall portion 82 that closes the opening at the upper end of the tube wall 56, and is slidable in the vertical direction in the figure. An air vent valve 58 that opens and closes the opening 57 at the upper end of the air chamber 50 and a spring (here, a coil spring) 60 as an urging member that urges the air vent valve 58 in the downward valve closing direction in the figure. .

Here, the air vent valve 58 has a disc-like valve portion 64 holding the seal member 62 and a hollow shaft portion 66.
An end portion of the shaft portion 66 is an attachment portion 68 having an insertion hole 120 and an engagement portion 122 (see FIG. 3), and a small washing ball chain 70 having a ball 38 and a connecting member 40 there. The lower end is fixedly attached.
A water inlet 72 is provided in the cylindrical wall 56 of the housing 47 so as to penetrate therethrough.

As shown in FIGS. 3 and 4, the air chamber 48 includes a cap 146 and a mounting portion 148 that make up most of the air chamber 48.
The mounting portion 148 is provided with a locking hole 150 and a locking claw 152 is provided on the side of the cap 146. By elastically locking them, the air chamber 48 is inserted into the mounting portion 148 upward. It is attached.

In the present embodiment, the switching mechanism 46 operates as follows.
When the air vent valve 58 is in a closed state and air is stored in the air chamber 50, the flapper valve 22 is largely washed by opening and closing, that is, a large washing that discharges a large amount of washing water toward the toilet. Do the operation for.

On the other hand, when the air vent valve 58 is lifted upward in the drawing and opened, water outside the cylinder wall 56 flows into the cylinder wall 56 from the inlet 72 and enters the air chamber 50 through the opening 57. The air chamber 50 is filled with water.
At this time, the flapper valve 22 performs an operation for small washing, that is, a small washing for discharging a small amount of washing water toward the toilet.
That is, in this embodiment, the operation of the flapper valve 22 is switched to the small cleaning operation by opening the air vent valve 58.
The specific principle of the switching will be described later.

  74 is a cylindrical cylindrical body that receives a weight of a float 84, which will be described later, and transmits a downward force to the flapper valve 22, and exerts a downward valve closing force on the flapper valve 22. The ball chain 70 is attached to the ball chain 70 so that the ball chain 70 can be inserted therethrough.

76 is a guide portion of the cylindrical body 74, and has a pair of plate-like guide walls 78 facing each other with the cylindrical body 74 therebetween, as shown in FIGS. The cylindrical portion 80 is integrally formed with the upper wall portion 82 and a fitting portion 154 projecting downward therefrom.
The fitting part 154 is provided with a locking claw 156.

On the other hand, the cylindrical wall 56 is provided with a corresponding locking hole 158, the guide portion 76 is fitted into the cylindrical wall 56 with the fitting portion 154 fitted therein, and the locking claw 156 is fitted into the locking hole. It is attached to the cylinder wall 56 by being locked to 158. That is, the guide portion 76 is provided on the flapper valve 22.
The cylindrical body 74 applies a downward force to the flapper valve 22 through the cylindrical portion 80 in the guide portion 76.

Here, the guide portion 76 allows the cylindrical body 74 to be inclined in the direction of the inclination side of the small cleaning ball chain 70 and inclines in the direction orthogonal to the inclination side direction by the contact action of the guide wall 78. It works to prevent.
At the upper end portions of the pair of guide walls 78 in the guide portion 76, guide portions 160 that are opened in a C shape are provided.
These guide portions 160 are portions that guide and insert the cylindrical body 74 between the pair of guide walls 78.

1 and 2, reference numeral 84 has a closed air chamber 86 having a float and donut shape, and holds air therein.
In addition, an insertion hole 88 is provided at the center, and the ball chain 70 for small washing is inserted into the insertion hole 88 in the vertical direction and attached to the ball chain 70.
Here, the float 84 can slide up and down along the ball chain 70 for small washing.

As shown in FIG. 1, a stopper 90 is attached to the ball chain 70 for small cleaning at a predetermined height position in a fixed state.
However, this stopper 90 can adjust the fixing position with respect to the ball chain 70 for small washing up and down.
The stopper 90 is a plate-like member, and has an attachment portion 162 including an insertion hole 120 through which the connecting material 40 is inserted and an engagement portion 122 at the center thereof.

Here, the stopper 90 is such that the distance between the upper end of the cylindrical body 74 and the stopper 90 is smaller than the vertical dimension of the float 84 under the state where the cylindrical body 74 hits the cylindrical portion 80 of the guide portion 76 downward. Is fixed to the ball chain 70 for small washing at a position where the distance becomes a certain distance.
Therefore, the float 84 can slide up and down a predetermined distance along the small cleaning ball chain 70 between the upper end of the cylindrical body 74 and the stopper 90.

In FIG. 1, 92 is a lever arm connected to the cleaning handle 94 and extending into the tank 10, and has a spindle portion 96 and a lever portion 112.
In FIG. 5, reference numeral 98 denotes an attachment member for attaching the cleaning handle 94 and the lever arm 92 to the tank wall 18, which has a male screw portion 100, and is fixed to the tank wall 18 by screwing a nut 102 therein. Yes.

The spindle portion 96 of the lever arm 92 has a square male fitting portion 104 and an elastic fitting portion 106 on the distal end side, and the male fitting portion 104 has a corresponding corner of the cleaning handle 94. The fitting portion 106 is elastically fitted into the fitting hole 110 provided in the cleaning handle 94 so as to be fitted to the female fitting portion 108 having a shape.
As a result, the spindle portion 96 is inserted through the insertion hole at the center of the attachment member 98 and is fixed to the cleaning handle 94 in the axial direction and the rotational direction.
Here, the spindle part 96 extends linearly toward the inner part of the tank.

A lever portion 112 that is bent at a right angle with respect to the spindle portion 96 is integrally provided on the tip end side of the spindle portion 96.
Here, the lever portion 112 extends vertically, that is, vertically downward in a normal state.
In this embodiment, as shown in FIG. 5, the lever portion 112 has a size that allows the nut 102 to be fitted and passed therethrough. The same applies to the spindle portion 96.

As shown in FIGS. 6C and 7, the lever portion 112 has a head portion 114 on the distal end side (lower end side in the drawing).
The head portion 114 has a large-washing-side mounting portion 116 and a small-washing-side mounting portion 118 at the upper end of the head portion 114 and the left and right positions when viewed from the front side with respect to the spindle portion 96. Yes.
As shown in FIG. 8, a large washing ball chain 36 is attached to the attachment portion 116, and a small washing ball chain 70 is attached to the attachment portion 118 in a fixed state.

Here, as shown in FIGS. 6 (A), 6 (C), and 7, each attachment portion 116, 118 is inserted through the insertion hole 120 through which the connecting member 40 is inserted in the vertical direction. And an engaging portion 122 that engages with the upper ball 38a (see FIG. 8) and the lower ball 38b of the connecting member 40.
Each of the large cleaning ball chain 36 and the small cleaning ball chain 70 inserts the connecting member 40 into the insertion hole 120 and engages the engaging portion 122 with the upper ball 38a and the lower ball 38b. By this, it is attached to each attachment part 116,118.
The large cleaning ball chain 36 and the small cleaning ball chain 70 attached to the attachment portions 116 and 118 are separated from the attachment portions 116 and 118 to the left and right, respectively, and hang downward.

The head portion 114 also has a pulling arm 124 that extends vertically downward to a position below the mounting portions 116 and 118 by a set distance at a position between the left and right of the mounting portions 116 and 118.
Here, the pulling arm 124 is constituted by a plate-like rib.
The pulling arm 124 is not fixed to either the large cleaning ball chain 36 or the small cleaning ball chain 70, and is normally free of them.

The large cleaning ball chain 36 and the small cleaning ball chain 70 are in a state of hanging vertically downward along the pulling arm 124 from the attachment portions 116 and 118.
Therefore, in this state, when the cleaning handle 94 is rotated counterclockwise when viewed from the right in FIG. 1, the spindle portion 96 and the pulling arm 124 rotate in the same direction, and the pulling arm 124 has its tip portion 124a. Is pulled over the large washing ball chain 36 and pulled up.

Here, the ball chain 36 is directly opened (without passing through the air vent valve 58, that is, without applying the opening force to the air vent valve 58) to open the flapper valve 22 to discharge a large amount of washing water in the tank 10. Make the toilet bowl clean.
At this time, the ball chain 70 for small cleaning is naturally not pulled up by the pulling arm 124 and remains hanging from the mounting portion 118.

  Conversely, when the cleaning handle 94 is rotated clockwise as viewed from the right side in FIG. 1, the pulling arm 124 that rotates in the same direction now hooks the tip end portion 124 a on the small cleaning ball chain 70. Pull this up.

In this embodiment, the force required to open the air vent valve 58 upward against the urging force of the spring 60 opens the flapper valve 22 in the closed state against the pressure of the cleaning water in the tank 10. Therefore, when the small cleaning ball chain 70 is pulled up, the air vent valve 58 is first lifted and opened, and then the air vent valve 58 is opened. The flapper valve 22 is raised with the opening of the valve.
Here, the flapper valve 22 is opened, and a small amount of washing water in the tank is discharged toward the toilet, so that the toilet is slightly washed.
At this time, the ball chain 36 for large washing is not pulled up by the pulling arm 124 and remains hanging downward from the mounting portion 116.

  Further, as shown in FIGS. 6 and 7, the head portion 114 is directed downward along the pulling arm 124 from the mounting portions 116 and 118 at positions in the axial direction of the spindle portion 96 with respect to the pulling arm 124. A large cleaning side detachment prevention portion (second detachment prevention portion) 130 and a small cleaning side detachment prevention portion (second detachment prevention portion) 132 having a pair of plate-shaped guide walls 128 extending in the front-rear direction. And.

  The large washing side detachment preventing portion 130 is configured so that the large washing ball chain 36 in the hanging position along the pulling arm 124 is caused by the abutment action of the guide wall 128 on the large washing ball chain 36 in the front-rear direction. It has the function of preventing it from coming off from the drooping position in the front-rear direction.

  Similarly, the detachment preventing portion 132 on the small cleaning side also has a small cleaning ball chain 70 from a drooping position along the pulling arm 124 due to the contact action of the guide wall 128 in the front-rear direction with respect to the small cleaning ball chain 70. Has a function of preventing the detachment in the front-rear direction.

The prevention of detachment of the ball chain by these detachment prevention portions 130 and 132 has the following meaning.
Depending on the type and size of the tank, the attachment position of the ball chains 36 and 70 to the attachment portions 116 and 118 on the upper end side and the position on the lower end side on the flapper valve 22 side may be in front and rear in the axial direction of the spindle portion 96. May vary more than a certain amount.

In this case, if the detachment preventing portions 130 and 132 having the guide walls 128 are not provided, the large cleaning ball chain 36 and the small cleaning ball chain 70 are respectively shown in the comparative example diagram of FIG. In some cases, the position may deviate from the hanging position along the pulling arm 124 in the front-rear direction.
In such a state, even if the pulling arm 124 is rotated, the tip end portion 124a is hooked on a predetermined position of the ball chain 36, 70 and cannot be pulled up.
Therefore, here, a detachment preventing portion 130, 132 having a pair of guide walls 128 is provided to prevent this.

  The head portion 114 also prevents a ball chain that is hanging down when the pulling arm 124 is rotated from coming off from the mounting portion in the left-right direction. Are provided with a large washing side detachment prevention part 134 and a small washing side detachment prevention part 136.

  Here, the disengagement prevention portions 134 and 136 are respectively formed on the cover portion 138 following the cover portion 138 extending downward while being curved along the guide wall 128 from the attachment portions 116 and 118, and the insertion holes 120 of the attachment portions 116 and 118. And a slit 140 provided.

  Here, the cover portion 138 is in a state in which the lower ball 38b of the pair of balls 38a and 38b adjacent to each other attached to the attachment portions 116 and 118 as shown in FIG. The lower ball 38b is covered from the outside in the left-right direction.

In addition, when attaching the ball chains 36 and 70 to the attachment portions 116 and 118, the slit 140 passes the connecting member 40 in the ball chains 36 and 70 through the cover portion 138 as shown in FIG. It is for bringing it into 118 insertion holes 120.
At this time, as shown in FIG. 9, the lower ball 38b 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 attached to the mounting portions 118, 116. Move to the side.
Here, at the lower end of the cover portion 138, an inclined guide portion 144 that guides the connecting material 40 toward the slit 140 is provided.

A reinforcing rib 142 extends from the upper end of the head portion 114 toward the spindle portion 96 continuously to the pulling arm 124.
The reinforcing rib 142 can be considered to form part of the pulling arm 124.

Next, the operation of this embodiment will be described.
In this embodiment, when the cleaning handle 94 is in the neutral position shown in FIG. 5, the flapper valve 22 is closed as shown in FIG. 11 (I), and the float 84 is submerged in water. It is in a state of contacting the stopper 90 upward due to buoyancy.
At this time, the air chamber 50 provided in the flapper valve 22 is filled with air.

When the washing handle 94 is rotated in this state from the large washing side, that is, the above-described counterclockwise direction, the pulling arm 124 provided on the lever portion 112 is rotated in the same direction, and the tip end portion 124a thereof is The ball chain 36 is pulled up by a certain required distance by hooking a portion below the set distance from the mounting portion 116 of the ball chain 36.
At this time, the large wash ball chain 36 is pulled up while being pulled toward the side close to the overflow pipe 24 in FIG.
As a result, as shown in FIG. 11 (II), the flapper valve 22 is directly lifted by the ball chain 36 and opened.
The flapper valve 22 that has been opened (the flapper valve 22 is prevented from further rotation by a flapper valve stopper (not shown) when the flapper valve 22 reaches the set maximum valve opening position), and the float 84 is still submerged in the water. Due to the buoyancy and the buoyancy by the air chamber 48, the valve is maintained in an open state thereafter, and the wash water in the tank 10 is discharged from the drain port 20 toward the toilet.

As the cleaning water in the tank 10 is discharged, the water level W in the tank drops.
Then, as shown in FIG. 12 (III), when the water level W is lowered from the upper end of the float 84 to a lower position by a certain distance, the buoyancy acting on the float 84 and the gravity of the float 84 itself are balanced, Thereafter, the float 84 moves downward along the ball chain 70 as the water level W descends.

At this time, the air chamber 50 in the air chamber 48 is still filled with air, so that buoyancy continues to act on the air chamber 48, and as shown in FIG. Even if 84 moves downward in conjunction with the lowering of the water level W, the flapper valve 22 is still held open.
Therefore, as shown in FIG. 12 (IV), the float 84 moves away from the stopper 90 and moves downward along the ball chain 70 on the small washing side.

The float 84 that has been moved downward alone comes to abut on the upper end of the cylindrical body 74 as shown in FIG.
When the water level W further falls from this state, the buoyancy with respect to the float 84 is further reduced, and accordingly, the weight of the float 84 is applied to the cylindrical body 74 and the weight applied to the cylindrical body 74 as the water level W decreases is increased. It will increase.

That is, the force by which the float 84 pushes the cylinder 74 downward gradually increases.
When the downward force overcomes the buoyancy with respect to the air chamber 48, the flapper valve 22 can no longer maintain the open state, and thereafter the flapper valve 22 starts to close as the water level W decreases. Eventually, the flapper valve 22 is completely closed.
Here, the discharge of the washing water from the drain port 20 is stopped.

On the other hand, when the washing handle 94 is rotated in the small washing side opposite to that at the time of large washing, that is, in the above-described clockwise direction, the pulling arm 124 of the lever portion 112 turns its tip end portion 124a to the ball chain 70 for small washing. In detail, the ball chain 70 for small cleaning is hooked to a portion below the set distance from the mounting portion 118 to raise the ball chain 70 by a predetermined required distance.
At this time, the ball chain 70 for small washing is pulled upward while being pulled away from the overflow pipe 24 in FIG.

At this time, the air vent valve 58 of the switching mechanism 46 is first lifted upward against the urging force of the spring 60 under the state in which the flapper valve 22 is closed.
Then, the opening 57 at the upper end of the air chamber 50 is opened, and the water in the tank 10 flows into the air chamber 50 through the inlet 72 and fills the air chamber 50 with water.

When the air vent valve 58 lifted upward hits the upper wall portion 82 of the housing 47, the pulling force by the ball chain 70 for small washing is exerted on the flapper valve 22 itself, and the flapper valve 22 opens here. .
At this time, the flapper valve 22 separated from the valve seat 44 is quickly moved upward relative to the air vent valve 58 by the biasing force of the spring 60. That is, the air vent valve 58 once opened returns to its original closed state immediately thereafter.
In this state, the flapper valve 22 is pulled up by the ball chain 70 for small cleaning, and then is in the maximum open state (see FIG. 14I).

When the flapper valve 22 is opened, the wash water in the tank 10 is discharged, and the water level W drops along with the discharge.
Then, as shown in FIG. 14 (II), when the head of the float 84 is slightly exposed from the water surface, the buoyancy with respect to the float 84 and the force applied downward with respect to the float 84 are balanced (at the time of large washing). Unlike the above, no buoyancy is exerted on the air chamber 48 at the time of small cleaning), and then the float 84 moves downward or moves downward along with the lowering of the water level W, and accordingly the flapper valve 22 opens the valve opening degree. As shown in FIG. 15 (III), the valve seat 44 is finally seated and the valve is completely closed.

During this time, since the buoyancy is not acting on the air chamber 48, the float 84 remains in contact with the stopper 90, that is, with a certain distance from the cylinder 74 maintained. It moves downward along with the descent of W.
Therefore, at the time of this small cleaning, the time from when the flapper valve 22 is completely opened to when the valve starts to be closed is short, that is, the valve starts to be closed at an earlier stage than at the time of the large cleaning, and the valve is closed.
Therefore, at the time of small cleaning, the amount of discharged water is small, and toilet cleaning (small cleaning) is performed with a small amount of water.

According to the above embodiment, only one float is necessary, and the space occupied by the float 84 in the tank 10 can be reduced.
In the present embodiment, the flapper without applying a valve opening force to the air vent valve 58 by the large cleaning ball chain 36 hanging from the lever arm 92 by rotation of the lever arm 92 in one direction (counterclockwise). By directly raising the valve 22 to open it, buoyancy is generated in the air chamber 50 provided in the flapper valve 22, and this is used as a second float.
Under this state, it is possible to lengthen the time until the flapper valve 22 is closed, and a large amount of washing water in the tank 10 can be discharged to perform large washing.

On the other hand, when the lever arm 92 is rotated in the other direction (clockwise), the air release valve 58 is first opened before the flapper valve 22 is opened by pulling up the ball chain 70 for small washing. The flapper valve 22 opens after the valve opening.
In this case, water in the tank 10 flows into the air chamber 50 provided in the flapper valve 22, the air chamber 50 loses its function as the second float, and only the float 84 attached to the ball chain 70 is present. In order to generate buoyancy, the flapper valve 22 is closed soon after the valve is opened, and the amount of cleaning water discharged from the tank 10 is reduced. That is, at this time, a small cleaning is performed.
In this embodiment, regardless of the amount of operation for pulling up the ball chain, large washing and small washing can be performed stably as intended by the user due to the difference in the rotation direction of the lever arm 92. it can.

In the present embodiment, since the spring 60 for biasing the air vent valve 58 in the downward valve closing direction is provided, the air vent valve 58 is automatically operated by the spring 60 when the pulling operation by the ball chain 70 is finished during the small cleaning. Therefore, the water stop failure after the flapper valve 22 is closed can be prevented.
Further, at the time of large cleaning, it is possible to prevent the air in the air chamber 50 from leaking by pushing up the air vent valve 58, thereby stabilizing the buoyancy acting on the air chamber 50, and a constant and stable amount of water at the time of large cleaning. It becomes possible to discharge cleaning water.

  In the present embodiment, since the air chamber 50 is provided below the flapper valve 22, the air chamber 50 can be disposed outside the tank, and the cleaning tank 10 can be downsized.

FIG. 16 shows another embodiment of the present invention.
This example is an example in which only the ball chain 351 as the pulling material is connected to the air vent valve 58 and the float 84 is attached to the ball chain 35 (the float 84 is not shown in FIG. 16).
In this example, when the cleaning handle 94 is rotated to the large cleaning side, the air vent valve 58 is locked and prevented from opening, while when the cleaning handle 94 is rotated to the small cleaning side, the air vent valve 58 is allowed to open. A lock mechanism 164 is provided.

  Here, the lock mechanism 164 for switching the air vent valve 58 between the valve opening permitting state and the valve opening prohibiting state is provided on the shaft 47 of the air vent valve 58 and the protrusion 166 having an upwardly sharp shape, and provided on the housing 47 side. The groove 168 is provided with a protrusion 166 that abuts the protrusion 166 upward to prevent the protrusion 166, that is, the air vent valve 58 from moving upward.

In this example, when the washing handle 94 is rotated to the large washing side, as shown in FIG. 16B, the protrusion 166 comes into contact with the contact portion 170, and the air vent valve 58 is locked to prevent valve opening. Is done.
Accordingly, at this time, the flapper valve 22 is opened without applying the opening force to the air vent valve 58.
At this time, air remains held in the air chamber 50, and buoyancy acts on the air chamber 48.

On the other hand, when the cleaning handle 94 is rotated to the small cleaning side, the ball chain 35 is pulled up while being pulled away from the overflow pipe 24 at this time, as shown in FIG. The protrusion 166 enters the groove 168 side and relatively moves upward along the groove.
That is, at this time, the air vent valve 58 is opened, and the flapper valve 22 is opened along with the opening of the air vent valve 58.
At this time, water in the tank flows into the air chamber 50 and the air chamber 50 is filled with water, and the buoyancy to the air chamber 48 disappears.
Accordingly, small cleaning is performed by opening and closing the flapper valve 22 under this state.
Also in this embodiment, the same effects as in the above embodiment can be obtained.

Although the embodiment of the present invention has been described in detail above, this is merely an example.
For example, the present invention does not depart from the gist of the present invention, for example, by omitting the cylinder 74 and configuring the tank wash water discharge device in a form in which the float 84 is fixed to the ball chain 70. It can be configured in various forms with various changes in the range.

DESCRIPTION OF SYMBOLS 10 Washing tank 16 Bottom part 20 Drain outlet 22 Flapper valve 35, 36, 70 Ball chain 50 Air chamber 58 Air vent valve 60 Spring 84 Float 92 Lever arm 164 Lock mechanism

Claims (5)

An apparatus for discharging cleaning water in a tank that discharges cleaning water stored in the cleaning tank from a drain outlet at the bottom of the tank toward a toilet,
(a) a flapper valve that opens and closes the drain;
(b) a lever arm extending into the tank;
(c) an air chamber provided in the flapper valve for holding air therein;
(d) a valve for opening and closing the air chamber, the valve being opened by a pulling force upward, and an air vent valve that vents air from the air chamber and causes water in the tank to flow into the air chamber;
(e) The flapper valve is hung down from the lever arm and rotated in one direction of the lever arm to open the flapper valve without applying an opening force to the air vent valve, and the air vent valve is rotated by rotation in the other direction. A pull-up material that opens the flapper valve through the air vent valve in a valve-opening permitted state; and
(f) a float attached to the pulling material;
And the force necessary to open the air vent valve with the pulling material during rotation in the other direction is smaller than the force necessary to open the flapper valve, the air vent valve An apparatus for discharging cleaning water in a tank, wherein the flapper valve is pulled up with the opening of the valve.   2. The in-tank washing water discharge device according to claim 1, further comprising an urging member having elasticity that urges the air vent valve in a downward valve closing direction.   3. The lifting material according to claim 1, wherein the lifting material includes a first lifting material directly connected to the flapper valve, and a second lifting material connected to the air vent valve and attached to the float. An apparatus for discharging cleaning water in a tank.   3. The lifting member according to claim 1, wherein the lifting member is a single member, the float is attached to the lifting member, the lifting member is connected to the air vent valve, and the lever arm rotates in the other direction. An apparatus for draining flush water in a tank, wherein a lock mechanism is provided which sometimes allows the air vent valve to open, but prevents the valve from being opened when the air vent valve rotates in the one direction.   5. The apparatus for discharging washing water in a tank according to claim 1, wherein the air chamber is provided below the flapper valve.

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