JPH10183719A - Tank device for washing water for toilet bowl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tank device for washing water for a toilet bowl which performs washing for feces and washing for urine by two valves in which a lower valve body and an upper valve body are overlapped and has a compact configuration. SOLUTION: A tank device for washing water for a toilet bowl 10 is provided with a valve device 30 which opens and closes a water drain port 20a in a bottom part 22 of the tank. The valve device 30 is provided with a lower valve body 32 and an upper valve body 34 which are supported by the same shaft body 35 in such a manner that they can turn freely, and they are opened by a valve opening operation equipment 40. A cross section of the lower valve body 32 is triangular, a buoyancy chamber is provided inside it, and it is closed when a water level reaches the lower valve body 32. Moreover, the upper valve body 34 is closed when a water level reaches a float 37.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush water tank device for a toilet, and more particularly to a type of waste which is discharged from the toilet with the amount of flush water flowing from the tank body to the toilet, that is, the waste is stool or urine. The present invention relates to a flush water tank device for a toilet bowl that can be selectively changed into two stages, large and small, depending on the condition.

[0002]

2. Description of the Related Art Conventionally, a flush water tank device for a toilet bowl of this type requires a smaller amount of drainage than a large flush at the time of a small flush. One that can be selected, for example, the one shown in FIG. 26 is known. FIG. 26 is a sectional view showing a conventional flush water tank device 200 for a toilet. The toilet flush water tank device 200 includes a valve device 206 that opens and closes a drain port 204 provided at the bottom of the tank body 202, and an operation handle 208 that operates the valve device 206. The valve device 206 includes a seat portion 204 a of the drain port 204.
Lower valve element 210 seated on the bottom and having communication hole 210a
And an upper valve body 212 for opening and closing the communication hole 210a of the lower valve body 210. The lower valve element 210 and the upper valve element 212 are rotatably supported by the same shaft 214, and one end thereof is connected to a spindle 208 a of the operation handle 208 by ball chains 216 a and 216 b. Ball chains 216a, 216b by operation
To selectively open them. The floats 218a, 218 are attached to the chains 216a, 216b.
18b are attached respectively, and their floats 2
When the water level reaches the positions of 18a and 218b, the float 21
8a and 218b are closed by reducing buoyancy.

[0003]

However, the above valve device 2
At 06, the float 2 is attached to the lower valve body 210 and the upper valve body 212.
18a and 218b are connected to each other, so that there is a problem that the configuration becomes complicated.

In order to solve such a problem, the lower valve body 2
Although it is considered that the float is integrated into 10,
In this case, the thickness of the lower valve element 210 is increased, and the rotational path of the upper valve element 212 is not perpendicular to the seat surface. Therefore, when the shaft 214 is slightly moved up and down, the upper valve element 212 is connected to the communication hole 210a. , And there is a problem that the sealability is easily impaired.

An object of the present invention is to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a flush water tank device for a toilet bowl which has a simple structure and prevents a decrease in sealing performance.

[0006]

Means for Solving the Problems and Action / Effect The first invention for solving the above-mentioned problems is a toilet flushing system in which the drainage amount of washing water can be set to a first water amount and a second water amount. In a water tank device, a lower valve body having a tank body, a drain port formed at a tank bottom of the tank body and having a lower opening seat portion at an upper peripheral edge thereof, and a lower seating portion seated on the lower opening seat portion A shaft body rotatably supported at one end of the lower valve body so that the lower valve body opens and closes the drain port by the lower seat portion being seated on the lower opening seat portion; and the lower valve. A lower valve body having a communication hole formed in the main body and capable of communicating with the drain port, an upper opening seat provided at an upper peripheral portion of the communication hole, and an upper seating portion seated on the upper opening seat; Upper valve book with An upper valve body rotatably supported by the shaft so that the upper valve body opens and closes the communication hole when the upper seating portion is seated on the upper opening seat portion; and the tank. It is provided on the upper wall surface of the main body, and opens the lower valve body and discharges it with the first amount of water from the drain port, or opens the upper valve body alone to open the lower valve body through the communication hole and the drain port. Operating means operable to discharge with two water volumes, wherein the lower opening seat portion and the lower seating portion are disposed on the first surface including the shaft in a closed state of the lower valve body. The upper opening seat portion and the upper seating portion are disposed on the second surface including the shaft body in a closed state of the upper valve body, and the second surface is positioned with respect to the first surface. And are arranged to be inclined at a predetermined angle.

[0007] The flush water tank device for a toilet according to the present invention can selectively set the amount of flush water drainage to a first water amount and a second water amount. That is, when the operation is performed by the operation means to discharge the first water amount, the lower valve body rotates about the shaft body, and the lower seating portion is separated from the lower opening seat portion, so that the drain port is opened, Wash water in the tank body is discharged. Then, the lower valve body is closed when the first amount of water is discharged.

When the operating means is operated to discharge with the second amount of water, the upper valve body rotates about the shaft and the upper seating portion is separated from the upper opening seat portion, thereby opening the communication hole. When opened, the washing water in the tank body is discharged through the communication hole and the drain port. Then, the upper valve body is closed when the second amount of water is discharged.

Since the lower opening seat portion and the lower seat portion are arranged on the first surface including the shaft, the lower seat portion is the first seat portion.
Even in the plane, even if the seat is slightly displaced, the seat is seated with high sealing property on the lower opening seat portion. Similarly, since the upper opening seat portion and the upper seating portion are arranged on the second surface including the shaft, even if the upper seating portion is slightly displaced in the second surface, the upper opening seat portion. Seats with high sealing performance. Therefore, high dimensional accuracy is not required for the lower valve body and the lower opening seat portion, and the upper valve body and the upper opening seat portion, so that manufacture and assembly can be simplified. Moreover, since the lower valve body and the upper valve body are supported by the same shaft, the support structure is simplified.

The upper valve body or the lower valve body is formed so as to be inclined at a predetermined angle about the shaft body and becomes a thick valve itself. It is easy to form a buoyancy chamber, so that there is no need to separately provide a float, and the configuration is simplified.

According to a second aspect of the present invention, there is provided a flush water tank device for a toilet bowl capable of setting a flush water drainage amount to a first water amount and a second water amount, wherein the tank body is formed at a tank bottom of the tank body. A drain port having a lower opening seat portion at an upper peripheral portion thereof, a lower valve main body having a lower seating portion seated on the lower opening seat portion, and a lower portion having the lower seating portion seated on the lower opening seat portion. A first shaft body rotatably supported at one end of the lower valve body so that the valve body opens and closes the drain port; a communication hole formed in the lower valve body and communicating with the drain port; A lower valve body having an upper opening seat portion provided at an upper peripheral portion of the hole, an upper valve body having an upper seating portion seated on the upper opening seat portion, and the upper seating portion being provided on the upper opening seat portion. The upper part by sitting An upper valve body having a second shaft body rotatably supported at one end of the upper valve body so that the body opens and closes the communication hole; and a lower valve provided on an upper wall surface of the tank body. Operating means operable to open the valve and discharge the first amount of water from the drain, or to open the upper valve alone and discharge the second amount of water through the communication hole and the drain. Wherein the first shaft is fixed to a lower portion of the tank body, and the second shaft is provided at an end of the lower valve body.

Further, when the lower valve body and the upper valve body are supported by different shafts via members fixed to the tank body, the upper valve body is closed during the process of closing the lower valve body after the upper valve body is closed. The upper seating portion rubs against the upper opening seat portion, causing a problem that the portion between the upper seating portion and the upper seating portion is worn.
However, in the second invention, since the upper valve body is fixed to the end of the lower valve member via the second shaft, the lower valve body and the upper valve body are separated by the lower valve body at the upper seating portion. It does not open and close while rubbing against the upper opening sheet portion of the upper portion, and does not impair the sealing performance due to wear during this time.

[0013] With the upper valve body thus fixed to the end of the lower valve body via the second shaft, the upper valve body is rotated in a direction opposite to the direction in which the lower valve body rotates. When the second shaft body is arranged, when the upper valve body opens, no force is applied to the lower valve body in the closing direction, and there is no hindrance to the valve opening operation of the lower valve body. In addition, as a suitable mode for arranging the second shaft body, the second shaft body can be provided on the lower valve body and at a portion that straddles the communication hole with respect to the first shaft body.

Further, when the second shaft is provided on the lower valve body, a regulating member for regulating the opening angle of the upper valve body is provided at a position close to the second shaft body, whereby the upper valve body is provided. Since the valve opening angle is restricted within a predetermined angle, the upper valve body does not remain open. Moreover, when the regulating member is provided on the lower valve body, when the upper valve body hits the regulating member, the lower valve body does not receive the force in the closing direction due to the reaction force accompanying the lower valve body, There is no hindrance to the opening and closing of the body.

In the case where the lower valve body has a narrow angle portion in which the first shaft body side is narrowed, if the second shaft body is provided close to the narrow angle portion, the thickness of the lower valve body is reduced. The second shaft body can be arranged close to the first shaft body without taking into account the above, so that the force at the time of opening the upper valve body does not act as a force to close the lower valve body, and the operation of the lower valve body There is no problem.

Further, in the case where the lower opening sheet portion is provided at a drain port inclined at a predetermined angle with respect to the tank bottom portion, when the washing water in the tank body is discharged to prevent freezing, Even if the washing water remaining at the bottom of the tank freezes,
In the high portion of the lower opening sheet portion, the frozen ice is not covered, so that the sealing performance in this portion is not impaired, and in the low portion of the lower opening sheet portion, when the washing water is poured into the tank body, the lower portion is closed. The washing water flows between the valve body and the lower opening sheet portion, and the frozen state is eliminated by the washing water. In such a case where the tank is used in a cold region, even if the remaining water in the tank body freezes, the lower seating portion of the lower valve body can immediately seal with the lower opening seat portion.

Further, as another means for preventing the upper seating portion of the upper valve body and the upper opening seat portion of the lower valve body from being worn when the upper valve body is closed, the upper valve body is provided near the second shaft body. A holding member for holding the open state of the upper valve body may be provided at the position where the upper valve body is closed after the lower valve body is closed.
Thereby, when the lower valve body is performing the closing operation,
The closing operation of the upper valve body does not overlap, so that the upper opening seat portion and the upper seating portion do not rub, and the wear due to the rubbing does not impair the sealing performance.

According to a third aspect of the present invention, there is provided a flush water tank device for a toilet bowl in which a flush water discharge amount can be set to a first water amount and a second water amount, wherein the tank body is formed at a tank bottom portion of the tank body. A drain port having a lower opening seat portion at an upper peripheral portion; a lower valve body having a lower seating portion seated on the lower opening seat portion; and a lower valve body having the lower seating portion seated on the lower opening seat portion. A first shaft body rotatably supported at one end of the lower valve body so as to open and close the drain port, a communication hole formed in the lower valve body and communicating with the drain port, A lower valve body having an upper opening seat portion provided at an upper peripheral portion; an upper valve body having an upper seating portion seated on the upper opening seat portion; and the upper seating portion seating on the upper opening seat portion. That the upper valve body An upper valve body having a second shaft body rotatably supported at one end of the upper valve body so as to open and close the communication hole; and an upper valve body provided on an upper wall surface of the tank body, Operating means operable to open the valve and discharge the first water amount from the drain port, and to open the upper valve body alone and discharge the second water amount through the communication hole and the drain port; A connection member that holds the upper valve body and the lower valve body together when the lower valve body opens or closes.

Further, the third aspect of the present invention provides another means for preventing abrasion between the upper opening seat portion and the upper seating portion.
When the lower valve element opens or closes, a connecting member for integrally connecting the upper valve element with the lower valve element is provided. When the lower valve element is opened, the connecting member integrally connects the upper valve element with the lower valve element to maintain the upper opening seat portion and the upper seat portion in close contact with each other, so that the friction between the upper opening seat portion and the upper seat portion is maintained. Nor. Further, since the air in the communication hole also acts as buoyancy, the valve opening property is particularly improved.

In the case where a pulling member having one end fixed to the lower valve body and raising the lower valve body is provided as the operating means, a connecting member is fixed to one end of the pulling member, and the upper member is connected to the upper member by the connecting member. This can be realized by a configuration in which the valve body and the lower valve body are integrally connected.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of the present invention will be described below.

FIG. 1 is a sectional view showing a flush water tank device 10 for a toilet bowl according to an embodiment of the present invention. In FIG. 1, the flush water tank device 10 for a toilet bowl can set a flush water drainage amount to a first water amount (large wash water amount) and a second water amount (small wash water amount). It is to be attached. The toilet flush water tank device 10 includes a tank body 20 having a drain port 20a at a lower portion, and a drain port 20a.
And a valve-opening device 40 mounted on the upper part of the tank side wall 21 for opening and closing the valve device 30 via the large ball chain 40a and the small ball chain 40b. I have.

FIGS. 2 to 4 are enlarged sectional views showing the valve device 30, which show a series of opening and closing operations. In FIG. 2, the drain port 20a is formed substantially at the center of the tank bottom 22, and the drain pipe 12 is connected to the lower part thereof. The drain pipe 12 is connected to a bowl of the toilet. Further, the drain port 20a is annularly protruded from the tank bottom portion 22, and the upper peripheral portion thereof is a lower opening sheet portion 20b.

The valve device 30 includes a lower valve body 32
And an upper valve element 34. The lower valve body 32 includes a lower valve main body 32b having a lower seating portion 32a that seats on the lower opening seat portion 20b of the drain port 20a, and a lower valve main body 3b.
2b, which is formed in 2b and communicates with the drain 20a.
2c and a buoyancy chamber 32d arranged annularly on the outer periphery of the communication hole 32c, and its outer shape is a triangular cross section. The passage area of the communication hole 32c is
The lower valve body 32 receives a large water pressure in the valve closing direction by the difference of the horizontal cross-sectional area of the buoyancy chamber 32d from the passage area a.

The lower valve body 32 has a lower valve body 3
At the end of 2b, it is rotatably supported via a shaft 35 provided on the support base 24. The lower seat portion 32a of the lower valve body 32 is formed in a horizontal plane parallel to the tank bottom 22. The lower valve body 32b opens and closes the drain port 20a by sitting on the lower opening seat portion 20b of the drain port 20a. Has become. Further, an upper opening seat portion 32g is formed on the inclined upper surface of the lower valve body 32 and on an upper peripheral portion of the communication hole 32c. The upper opening seat portion 32g is a portion where the upper valve body 34 sits. Also,
A lower valve chain attachment portion 32e is provided at an end of the lower valve main body 32b opposite to the shaft 35. This lower valve chain attachment part 3
2e is a large ball chain 40 of the valve opening operation tool 40 (see FIG. 1).
a is connected to the lower end.

The upper valve body 34 has an upper valve body 34a, and is rotatably supported by the same shaft 35 that pivotally supports the lower valve body 32. An upper seat portion 34c is provided on the lower surface of the upper valve body 34. The upper seat portion 34c is seated on the upper opening seat portion 32g of the lower valve body 32 so that the upper valve body 34a opens the communication hole 32c. It opens and closes. An upper valve chain attachment portion 34 d is projected from an upper surface portion of the upper valve body 34, and the upper valve chain attachment portion 34 d is connected to a lower end of the small ball chain 40 b of the valve opening operation tool 40. ing. A float 37 (see FIG. 1) is attached in the middle of the small chain 40b. The mounting position of the float 37 is set such that the amount of flush water up to the full position Hw1 above the mount position H1 is discharged at the time of small cleaning.

As described above, the lower valve body 32 is formed in a triangular cross section, has a lower seating portion 32a on its lower surface, and has an upper opening seat portion 32g on its inclined upper surface.
, The lower opening seat portion 20b and the lower seating portion 32a are arranged on the first surface f1 including the shaft 35, and the upper opening seat portion 32g and the upper seating portion 34c move the shaft 35. In addition to being arranged on the second surface f2 including the first surface f1, it is arranged to be inclined at a predetermined angle θ with respect to the first surface f1.

FIG. 5 shows the tank side wall 21 of the tank body 20.
Opening operation device 40 as operation means provided on the upper part of the valve
It is. The valve-opening device 40 includes a sleeve 41 fixed to the tank side wall 21 of the tank body 20 and having a through hole 41b, and a spindle 42 rotatably supported by the sleeve 41 by penetrating the through hole 41b. When,
An operation lever handle 43 fixed to one end of the spindle 42 is provided, and a large cleaning operation lever 44 and a small cleaning operation lever 45 attached to the spindle 42 inside the tank body 20. The above sleeve 4
1 is supported at one end thereof via a flange portion 41a in contact with the tank side wall portion 21 and is fastened at the other end thereof by a nut 48 via a packing 46 so that the tank side wall portion 21
It is fixed to. The lever handle 43 is fixed to one end of the spindle 42 with a screw 49,
An operation unit 43a is provided below the operation unit 43a. Therefore, when the operation unit 43 a is rotated clockwise or counterclockwise, the valve opening operation tool 40 rotates in those directions around the spindle 42 supported by the sleeve 41.

The small cleaning operation lever 45 includes a cylindrical portion 45a fixed to one end of the spindle 42, and a lever portion 45b protruding from a lower portion of the outer periphery of the cylindrical portion 45a. The portion 45a is fitted to the spindle 42 so as not to rotate and move in the axial direction so that the lever portion 45b normally extends downward from the spindle 42.

FIG. 6 is a sectional view taken along line 6-6 in FIG. The large cleaning operation lever 44 includes a cylindrical portion 44a and a lever portion 44b protruding from one end of the cylindrical portion 44a. The cylindrical portion 44a is formed at one end in the axial direction with a cutout portion 44c extending in the circumferential direction over a predetermined range of angles. The cylindrical portion 44a is formed on the outer peripheral surface of the base of the cylindrical portion 45a of the small cleaning operation lever 45 by the notch 44c.
Are fitted in the distal direction, and are rotatably supported by the small cleaning operation lever 45 so as to be immovable in the axial direction. Usually, the lever portion 44 b extends downward from the spindle 42.

The small cleaning operation lever 45 is rotated by rotating the small cleaning operation lever 45.
The notch 4 of the large cleaning operation lever 44
A projection 45c is formed which engages with the end face 4c and abuts the end face. The protruding portion 45c is formed such that the small cleaning operation lever 45 rotates integrally with the large cleaning operation lever 44 in the engaged state with the notch 44c.

When the lever handle 43 is rotated clockwise in the valve opening operation tool 40, the small cleaning operation lever 45 is rotated clockwise, and the notch portion 44c of the large cleaning operation lever 44 and the small cleaning operation lever 44 are small. Engagement of the cleaning operation lever 45 with the protrusion 45c also rotates the large cleaning operation lever 44 clockwise. Thereby, as shown in FIG. 4, the lower valve body 32 is moved through the large ball chain 40a.
The upper valve body 34 is pulled up via the small ball chain 40b. Therefore, the upper valve body 34 and the lower valve body 32 are simultaneously opened to perform large-scale cleaning.

When the lever handle 43 is rotated counterclockwise, the small cleaning operation lever 45 is accordingly operated.
Rotates counterclockwise to pull up the upper valve body 34. However, the rotation of the small cleaning operation lever 45 in the counterclockwise direction causes the protrusion 45c to move away from the end face of the notch 44c of the large cleaning operation lever 44, so that the large cleaning operation lever 44 rotates. The lower valve body 32 is not pulled up. Therefore, as shown in FIG. 3, only the upper valve body 34 is opened, and small cleaning is performed.

As shown in FIG. 3, when the small washing is performed, the water pressure applied to the upper valve body 34 due to the start of drainage decreases. Therefore, the operation of the lever handle 43 is held and the upper valve body 34 is pulled up. Even if it does not, the upper valve body 34
The state where the upper valve body 34 and the float 37 are lifted by the buoyancy, that is, the valve open state is maintained. Thereby, drainage is continued. At this time, the diameter of the communication hole 32c of the lower valve body 32 is smaller than the inner diameter of the lower opening seat portion 20b, and the differential pressure of the area difference is applied to the lower valve body 32.
Is not opened by the buoyancy even if it has the buoyancy chamber 32d.

When the water level in the tank body 20 is lowered to the position of the float 37 due to the drainage, and the float 37 is exposed from the water surface, the buoyancy of the float 37 is reduced, so that the upper valve body 34 is opened. Cannot be maintained, and it turns in the valve closing direction and closes. Thereby, drainage is stopped.

On the other hand, as shown in FIG. 4, when the large cleaning is performed, the lower valve 32 and the upper valve 3
The lever handle 4 is hardly affected by water pressure.
Even if the operation position of No. 3 is not held, the valve-open state is maintained by the buoyancy of the lower valve body 32 and the upper valve body 34 and the buoyancy of the float 37. Thereby, drainage is continued.

When the water level in the tank body 20 is lowered due to the drainage and the float 37 is exposed from the water surface, the upper valve body 34 does not receive buoyancy from the float 37 and the small ball chain 40
Since b is also loosened, it is rotated by its own weight in the valve closing direction to seat on the upper opening seat portion 32g of the lower valve body 32 and close the communication hole 32c. Further, when the water level in the tank body 20 drops to the position of the lower valve body 32 and the lower valve body 32 is exposed from the water surface, the lower valve body 32 maintains its valve-open state because its buoyancy decreases. It cannot rotate and closes in the valve closing direction. As a result, the lower valve body 32 closes, and the drainage is stopped.

Therefore, in the case of the small washing, only the portion above the position of the float 37 attached to the small ball chain 40b is drained at a relatively high position in the tank body 20, whereas the large washing is performed. In this case, all the washing water above the position of the upper valve body 34 is drained.

According to the valve device 30, the lower valve body 32 and the upper valve body 34 are arranged coaxially, and the communication hole 32c of the lower valve body 32 is arranged to be closed by the upper valve body 34. The support structure is simplified, and the drain 20a
At one location, and the configuration of the tank body 20 can be simplified.

In addition, since the buoyancy chamber 32d is provided in the lower valve body 32, there is no need to separately attach a float to the large ball chain 40a or the like, and the configuration can be simplified.

In the valve device 30, since the lower seat portion 32a and the lower opening seat portion 20b of the lower valve body 32 are arranged on the first surface f1 including the shaft 35, the lower seat portion 32a is provided.
Even if a is slightly deviated in the first surface f1, it is seated on the lower opening seat portion 20b with a high sealing property.
Similarly, the upper opening seat portion 32g and the upper valve body 34
Is arranged on the second surface f2 including the shaft 35, so that even if the upper seating portion 34c is slightly displaced within the second surface f2, It sits with high sealing properties. As described above, since the lower valve body 32 and the upper valve body 34 are supported by the same shaft body 35, not only the support structure is simplified, but also the lower valve body 3
Since high dimensional accuracy is not required for the second and lower opening seat portions 20b, the upper valve body 34 and the upper opening seat portion 32g, manufacturing and assembly can be simplified.

FIG. 7 is a cross-sectional view showing a state in which the valve device 50 according to the modification of the first embodiment is closed. The lower valve body 32 of the valve device 30 shown in FIG. 2 and the like is a substantially right-angled triangle having an inclined upper surface, but the lower valve body 51 of the valve device 50 according to this embodiment has a lower surface. Are inclined and the upper surface is a right-angled triangle of a horizontal plane. That is, the lower opening sheet portion 20b of the drain port 20a
Is formed so as to project obliquely from the tank bottom 22, and the inclined lower opening seat portion 20 b is seated on a lower seating portion 51 a formed obliquely on the lower valve body 51. The upper opening seat portion 51b on the upper surface of the lower valve body 51 is disposed on a horizontal plane, and the upper opening seat portion 51b communicates with the upper seating portion 52a of the upper valve body 52 which is a flapper valve. The hole 51c is opened and closed.

With such a configuration of the valve device 50, the lower opening seat portion 20b and the lower seating portion 51a are arranged on the same first surface f3 including the shaft 54, and the upper opening seat portion 51b and the upper seating portion 52a are connected to each other. Are arranged on the same second surface f4 including the shaft body 54, and are arranged at a predetermined angle with respect to the first surface f3. Thereby, as described above, the buoyancy chamber 51d is provided in the lower valve body 51.
Can be arranged compactly, and high sealing performance can be obtained with a simple configuration.

FIGS. 8 and 9 are side views showing a valve device 60 according to another embodiment. FIG. 8 shows a valve closed state, and FIG. 9 shows a valve open state. The valve device 60 includes a lower valve body 61, an upper valve body 62, and a valve support 63. Lower valve element 6
1 has a substantially cylindrical shape, and a lower seating portion 61a on the lower surface;
An upper opening sheet portion 61b is provided on the upper surface, and a communication hole 61c and a buoyancy chamber 61d surrounding the communication hole 61c are provided inside.
It has. The upper valve body 62 has an upper seating portion 6 which is seated on the lower surface of the upper valve seat 61b of the lower valve body 61 on the lower surface.
2a, and a buoyancy chamber 62c (FIG. 9) serving as a substitute for the float of FIG. 1 therein.

The valve support 63 is provided on the tank bottom 2.
A support base 64 erected from 2, a lower support 65,
And an upper support portion 66. A first shaft 67 is fixed to the upper portion of the support base 64.
A lower shaft hole 65a at the lower end of the lower support portion 65 is rotatably supported. Further, the lower support portion 65 integrally includes an arm lower portion 65b and an arm upper portion 65c, and the lower valve body 61 is supported by the arm lower portion 65b and the arm upper portion 65c. Further, a second shaft 68 is fixed to an upper portion of the lower support portion 65.
8, an upper shaft hole 66b of an upper arm 66a of the upper valve body 62 is rotatably supported. That is, the upper valve body 62
The lower support portion 65 is rotatably supported via an upper arm 66 a and a second shaft 68.

In the valve device 60 having this configuration, when the upper valve body 62 is pulled up by the small ball chain 40b,
The water is rotated about the second shaft 68 and opened, and the washing water in the tank body 20 is drained. Then, when exposed from the water surface, the upper valve body 62 loses buoyancy by the buoyancy chamber 62c and closes by receiving a force in the closing direction due to its own weight.

On the other hand, as shown in FIG. 9, when the lower valve body 61 is pulled up by the large ball chain 40a, the lower valve body 61
Is opened by rotating counterclockwise around the first shaft 67,
The cleaning water in the tank body 20 is drained. At this time, since the water pressure applied to the upper valve body 62 decreases, the upper valve body 62 pivots around the second shaft body 68 and opens. The lower valve body 61 is integrally tilted and opened in the counterclockwise direction because it is supported by the upper shaft hole 66b.

When the water level is lowered by the drainage and the upper valve body 62 is exposed to the water surface, the upper valve body 62 is moved to the buoyancy chamber 62.
When the buoyancy of the buoyancy chamber 61d is lost, the lower valve body 61 is closed by losing the buoyancy of the buoyancy chamber 61d. At this time, when the lower valve body 61 closes, the upper valve body 6
The lower valve body 61 and the lower valve body 61 are connected to the lower support part 65 and integrally closed. That is, since the upper valve body 62 is not closed while being rubbed with the upper opening seat portion 61b of the lower valve body 61 by the upper seating portion 62a, the sealability due to wear during this time is not impaired.

That is, as shown in FIG. 10 (A), the valve device 70 has a valve support 7
1, when the first shaft 72 and the second shaft 73 are formed to support the lower valve body 75 and the upper valve body 76, respectively, as shown in FIG. In the process of closing the lower valve body 75 after the closing of the upper valve body 76, the upper seating portion 76a of the upper valve body 76 rubs against the upper opening seat portion 75a and wears therebetween, but the embodiment shown in FIGS. According to the valve device 60 according to the above, such a problem does not occur.

FIGS. 11 and 12 are side views showing a valve device 80 according to still another embodiment. FIG. 11 shows a valve closed state, and FIG. 12 shows a valve open state. This valve device 80 is different from the embodiment of FIGS. 8 and 9 in that the position of the second shaft body 82 for attaching the upper valve body 81 is the first position with the lower valve body 83 interposed therebetween.
The difference is that it is provided at a position facing the shaft 84.

That is, the valve device 80 includes a cylindrical lower valve body 83 and an upper valve body 81. Further, the valve device 80 includes a first support base 8 erected from the tank bottom 22.
5 and a lower valve body 8 via a first shaft 84 and a lower arm 83a provided above the first support base 85.
3 is rotatably supported. Further, on the upper side of the lower valve body 83 and on the side opposite to the lower arm 83a, a second
A support base 83b protrudes. This second support base 8
A second shaft body 82 is provided at an end of 3b, and the upper valve body 8 is connected via the second shaft body 82 and the upper arm 81a.
1 is rotatably supported. The upper valve body 81
Has a buoyancy chamber 81b shown in FIG.

In the valve device 80 having this configuration, when the upper valve body 81 is pulled up by the small ball chain 40b,
The water is rotated about the second shaft 82 and opened, and the washing water in the tank body 20 is drained.

On the other hand, as shown in FIG.
Is lifted by the large ball chain 40a, the lower valve body 83 is rotated around the first shaft body 84 and opened, and the washing water in the tank body 20 is drained. At this time, the upper valve body 81 also rotates about the second shaft body 82 and opens. In such a valve opening operation of the upper valve body 81, the second valve
The shaft 82 has a first shaft 84 supporting the lower valve body 83.
Is provided on the side surface on the opposite side with respect to the lower valve body 83. Therefore, when the upper valve body 81 opens and rises, the rising force does not act as a force in the closing direction on the lower valve body 83, and there is no hindrance to the opening / closing operation of the lower valve body 83.

That is, in the valve device 90 shown in FIG. 13 which is the same as FIG. 9, when a horizontal distance L occurs between the first shaft 92 and the second shaft 94 during opening and closing, it acts on the second shaft 94. Buoyancy F
Act as component forces f1 and f2 in the figure, and the component force f2 becomes a force in the direction to close the lower valve element 93. According to the valve device 80 according to the embodiment shown in FIGS. There is no such defect.

14 and 15 are side views showing a valve device 100 according to another embodiment. FIG. 14 shows a valve opening state at the time of small cleaning, and FIG. 15 shows a valve opening state at the time of large cleaning. Shown respectively. The valve device 100 has substantially the same configuration as the valve device 60 of FIG.
The difference is that a regulating member 101 for regulating the valve opening angle is provided. That is, when the upper valve body 62 is opened at the time of small cleaning, the end of the upper arm 66a comes into contact with the regulating member 101 to reduce the opening degree of the upper valve body 62 to a predetermined value or less.も な い The valve does not open too much and cannot return to the closed state even if the water level drops. In addition, the regulating member 101 is provided with a lower supporting portion 65 integrated with the lower valve body 61.
When the upper arm 66a of the upper valve body 62 strikes the regulating member 101, the lower valve body 61 does not exert a force in the closing direction due to the reaction force, so that the lower valve body 61 closes. Does not hinder valve operation.

That is, as shown in FIG. 16, when the regulating member 102 is provided on a member standing upright from the tank body 20 or the like, the upper valve body 62 hitting the regulating member 102 closes to the lower valve body 61. Direction, and the upper valve body 62
However, in the present embodiment, there is no such problem.

FIGS. 17 and 18 are views showing a valve device 110 according to still another embodiment. FIG. 17 shows a valve closing state, and FIG. 18 shows a valve opening state during heavy cleaning. This valve device 110 is characterized in that the lower valve body 111 is substantially a right triangle and the position of the second shaft body 112 is provided on the lower arm 111b at a distance close to the narrow angle portion 111a of the lower valve body 111. .

That is, the lower valve body 111 of the valve device 110 shown in FIG. 17 has a lower surface inclined and an upper surface formed into a horizontal right-angled triangle. In order for the lower seating portion 111c having such an inclined surface to sit on the drain port 20a, the lower opening seat portion 20b is formed to project from the tank bottom 22 so as to be inclined. The upper opening seat portion 111d on the upper surface of the lower valve body 111 is disposed on a horizontal plane, and the upper opening seat portion 111d communicates with the upper seating portion 113b of the upper valve body 113 which is a flapper valve. The hole 111e is opened and closed.

The valve device 110 has a support base 114 erected from the tank bottom 22. A first shaft 115 is provided above the support base 114, and the lower valve 1
The lower valve body 111 is rotatably supported via a lower arm 111 b protruding from a side end of the lower valve 11. A second shaft 112 is provided at one end of the lower arm 111b. The second shaft body 112 rotatably supports the end of the upper valve body 113.

In the valve device 110 having this configuration, when the upper valve body 113 is lifted up by the small ball chain 40b, the upper valve body 113 is pivotally opened about the second shaft body 112, and the washing water in the tank body 20 is drained. Is done.

On the other hand, as shown in FIG.
When 1 is pulled up by the large ball chain 40a, it rotates around the first shaft 115 and opens, and the washing water in the tank body 20 is drained. At this time, the upper valve body 113 also rotates about the second shaft body 112 and opens. The upper valve body 113 is directly attached to the lower arm 111b at its end.
Therefore, when the upper valve body 113 opens and rises,
This rising force does not act as a force in the closing direction on the lower valve body 111, and does not hinder the closing operation of the lower valve body 111.

That is, in the valve device 120 shown in FIG. 19, when a horizontal distance L is generated between the first shaft body 124 and the second shaft body 122 at the time of opening and closing, the buoyancy F acting on the second shaft body 122 is increased. Acting as component forces f1 and f2, the component force f2 is a force in the direction to close the lower valve body 123. According to the valve device 110 according to the embodiment of FIG.
By providing 2 near the narrow angle portion 111a of the lower valve body 111, it is not necessary to consider the thickness of the lower valve body 111. Therefore, when the upper valve body 113 opens, its buoyancy does not act as a force in the direction to close the lower valve body 111,
There is no problem in the operation of the lower valve body 111.

In a cold region, for example, a means for discharging the washing water in the tank body 20 to prevent freezing is employed. In this case, if the drain port 20a is a lower opening seat portion 20b standing upright from the tank bottom portion 22, water remains in the tank bottom portion 22 and this is the valve device 11
0 is a factor that impairs the sealing performance. However, in the present embodiment, since the lower opening sheet portion 20b of the drain port 20a is formed to be inclined with respect to the tank bottom portion 22, FIG.
As shown in the figure, the washing water remaining in the tank bottom 22
Even if frozen at c1, the high portion 20b1 of the lower opening sheet portion 20b does not cover the frozen ice, so that the sealing performance at this portion is not impaired, and the lower opening sheet portion 20b is not damaged.
In the lower portion 20b2, when the washing water is poured into the tank body 20, the lower valve body 111 and the lower opening seat portion 20
The washing water flows between b and b, and the frozen state is eliminated by the washing water. Therefore, even in the case of use in a cold region, the lower seating portion 111c of the lower valve body 111 can be immediately brought into close contact with the lower opening seat portion 20b, and the valve can be reliably closed.

FIGS. 20 to 24 are views showing a valve device 130 according to another embodiment, showing a series of opening and closing operations at the time of large-scale cleaning. The valve device 130 has substantially the same configuration as the valve device 60 in FIG. 8, but has a holding member 1 on the side of the lower support portion 65 for determining the valve closing timing of the upper valve body 62.
31 is provided. That is, the holding member 13
Reference numeral 1 denotes a member that acts to close the upper valve body 62 after the lower valve body 61 is closed when both the lower valve body 61 and the upper valve body 62 are opened.

The operation of the holding member 131 will be described with reference to FIGS. The lower valve element 61 is a large chain 4
When it is pulled up by Oa, it turns around the first shaft body 67 and opens, and the washing water in the tank body 20 is drained.
At this time, the upper valve body 62 also pivots about the second shaft body 68 and opens, and stands almost vertically under the influence of the buoyancy chamber 62c in the upper valve body 62 (the state of FIG. 20).

Then, as shown in FIG. 21, when the water level drops to Ha1 due to drainage, the upper valve body 62 rotates counterclockwise due to the position of the center of gravity, and maintains the open state by the holding member 131. . Further, as shown in FIG. 22, when the water level drops to Ha2 and the lower valve body 61 starts closing,
The upper valve body 62 is also pushed by the holding member 131 and the lower valve body 61
Pivots in the closing direction together with Then, when the lower valve body 61 reaches a position where it is almost closed (the state of FIG. 23), the upper valve body 62 is closed by receiving a clockwise force due to its own weight due to the position of the center of gravity.

As described above, according to the valve device 130, even if the lower valve body 61 and the upper valve body 62 are supported by different shafts on the first shaft body 67 and the second shaft body 68, When the lower valve body 61 performs the closing operation, the closing operation of the upper valve body 62 overlaps, and the upper opening seat portion 61b
The upper seat portion 62a does not rub against the upper seat portion 62a (see FIG. 10), and the sealing performance between the upper opening seat portion 61b and the upper seat portion 62a due to the rub is not impaired.

FIGS. 24 and 25 show a valve device 140 according to another embodiment. The valve device 140 is characterized in that it has a connecting member 143 that holds the upper valve body 142 integrally with the lower valve body 141 when the lower valve body 141 opens.

The valve device 140 has a cylindrical lower valve element 141.
And an upper valve body 142. A connecting member 143 rotatably supported by a shaft 143c at one end is attached to a side portion of the lower valve body 141. This connecting member 143
Has a substantially U-shape, but has a connection engaging piece 143b whose other end is inclined to open the U-shape. The distal end of the connection engagement piece 143b is connected to the lower end of the large ball chain 40a of the valve-opening device (see the figure). On the other hand, the upper valve body 142 has an engagement protrusion 142b formed on the side wall portion 142a. The engagement protrusion 142b is connected to the connection engagement piece 1
43b is provided at a position to be engaged with the base.

Now, when the large chain 40a is pulled up, the connecting member 143 fixed to the lower end of the large chain 40a.
Pivots counterclockwise about the shaft 143c, engages the engagement projection 142b with the base of the coupling engagement piece 143b, and integrates the upper valve body 142 with the lower valve body 141. When the large chain 40a is further pulled up, the connecting member 143 becomes
The lower valve 141 is opened while the upper valve 142 and the lower valve 141 are in close contact and integrated. And
Until the lower valve element 141 is closed, the state integrated with the upper valve element 142 is maintained.

Therefore, when the lower valve element 141 is performing the closing operation, the upper valve element 14 shown in FIG.
2, the upper opening seat portion 141a and the upper seating portion 142c are not rubbed, and the sealing performance between the upper opening seat portion 141a and the upper seating portion 142c due to the rubbing is not impaired. .

The present invention is not limited to the above embodiment, but can be implemented in various modes without departing from the gist of the invention.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a flush water tank device for a toilet bowl according to an embodiment of the present invention.

FIG. 2 is a valve device 3 according to the flush water tank device 10 for a toilet bowl.
FIG.

FIG. 3 is a sectional view showing a state in which an upper valve body of the valve device 30 is opened at the time of small cleaning.

FIG. 4 is a cross-sectional view showing a state in which a lower valve body 32 and an upper valve body 34 of the valve device 30 are opened during large cleaning.

FIG. 5 is a cross-sectional view showing the valve-opening operation device 40.

FIG. 6 is a sectional view taken along the line 6-6 in FIG. 5;

FIG. 7 is a sectional view showing a valve device 50 according to another embodiment.

FIG. 8 is a side view showing a valve device 60 according to still another embodiment.

FIG. 9 is a side view showing a state where the valve device of FIG. 8 is opened at the time of large cleaning.

FIG. 10 is an explanatory diagram for explaining the operation of the valve device 60.

FIG. 11 is a side view showing a valve device 80 according to another embodiment.

FIG. 12 is a side view showing a state where the valve device 80 of FIG. 11 is opened at the time of large cleaning.

FIG. 13 is an explanatory diagram illustrating the operation of the valve device 80 of FIG. 11;

FIG. 14 shows a valve device 100 according to still another embodiment.
FIG.

FIG. 15 is a side view illustrating the operation of the valve device 100 of FIG. 14;

FIG. 16 is an explanatory diagram illustrating the operation of the valve device 100 of FIG.

FIG. 17 is a sectional view showing a valve device 110 according to another embodiment.

FIG. 18 is a cross-sectional view showing a state where the valve device 110 is opened at the time of large cleaning.

FIG. 19 is an explanatory diagram illustrating the operation of the valve device 110 of FIG. 17;

FIG. 20 shows a valve device 130 according to still another embodiment.
FIG.

FIG. 21 is a side view showing the operation at the time of large cleaning, following FIG. 20;

FIG. 22 is a side view showing the operation following FIG. 21;

FIG. 23 is a side view showing the operation following FIG. 22;

FIG. 24 shows a valve device 140 according to still another embodiment.
FIG.

FIG. 25 is a side view illustrating the operation of the valve device 140.

FIG. 26 is a sectional view showing a conventional flush water tank device 200 for a toilet bowl.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Toilet flush water tank device 12 ... Drain pipe 20a ... Drain port 20 ... Tank main body 20b ... Lower opening sheet part 21 ... Tank side wall 22 ... Tank bottom 24 ... Support base 30 ... Valve device 32 ... Lower valve body 32a ... Lower seat portion 32b Lower valve body 32c Communication hole 32d Buoyancy chamber 32g Upper opening seat portion 32e Lower valve chain mounting portion 34 Upper valve body 34a Upper valve body 34c Upper seating portion 34d Upper valve chain mounting Part 35 ... Shaft 37 ... Float 40a ... Large ball chain 40b ... Small ball chain 40 ... Valve opening device 41b ... Through hole 41 ... Sleeve 41a ... Flange portion 42 ... Spindle 43 ... Lever handle 43a ... Operation portion 44 ... Large cleaning operation lever 44a ... Cylinder part 44b ... Lever part 44c ... Notch part 45 ... Small cleaning operation lever 45a ... Cylinder part 45b ... Lever part 45c Projecting part 46 ... Packing 48 ... Nut 49 ... Screw 50 ... Valve device 51 ... Lower valve element 51a ... Lower seating part 51b ... Upper opening seat part 51c ... Communication hole 51d ... Buoyancy chamber 52 ... Upper valve body 52a ... Upper seating part 54 ... Shaft body 60 ... Valve device 61 ... Lower valve body 61a ... Lower seat part 61b ... Upper opening seat part 61c ... Communication hole 61d ... Buoyancy chamber 62 ... Upper valve body 62a ... Upper seat part 62c ... Buoyancy chamber 63 ... Valve support part Reference numeral 64: Support base 65: Lower support 65a: Lower shaft hole 65b: Arm lower 65c: Upper arm 66: Upper support 66a: Upper arm 66b: Upper shaft hole 67: First shaft 68: Second shaft 70 Valve device 71 ... Valve support part 72 ... First shaft body 73 ... Second shaft body 75 ... Lower valve body 75a ... Top opening seat part 76 ... Upper valve body 76a ... Top seating part 80 ... Valve device 81 ... Top Valve body 81a Upper arm 81b Buoyancy chamber 82 Second shaft 83 Lower valve 83a Lower arm 83b Second support base 84 First shaft 85 First support base 90 Valve device 91 Upper Valve element 92 ... First shaft element 93 ... Lower valve element 94 ... Second shaft element 100 ... Valve device 101 ... Regulatory member 102 ... Regulatory member 110 ... Valve device 111 ... Lower valve member 111a ... ... lower seating portion 111d ... upper opening seat portion 111e ... communication hole 112 ... second shaft body 113 ... upper valve body 113b ... upper seating portion 114 ... support base 115 ... first shaft body 120 ... valve device 121 ... upper valve body 122 .., First shaft 123, lower valve 130, valve device 131, holding member 140, valve 141, lower valve 141 a, upper opening seat 142, upper valve 142 a, side wall 142b ... engagement projection 142c ... upper seating part 143 ... connection member 143c ... shaft 143b ... connection engagement piece

Claims (11)

[Claims] 1. A toilet flushing water tank device capable of setting a flushing water drainage amount to a first water amount and a second water amount, comprising: a tank main body; a tank main body formed at a tank bottom portion; A drain port having a lower opening seat portion; a lower valve body having a lower seating portion seated on the lower opening seat portion; and a lower valve body having the lower valve body having the lower opening seat portion seated on the lower opening seat portion. A shaft body rotatably supported at one end of the lower valve body so as to open and close,
A lower valve body having a communication hole formed in the lower valve body and capable of communicating with the drain port, an upper opening seat provided at an upper peripheral portion of the communication hole, and seating on the upper opening seat; An upper valve body having an upper seating portion, wherein the upper seating portion is rotatably supported by the shaft so as to open and close the communication hole by seating on the upper opening seat portion. An upper valve body, provided on an upper wall surface of the tank body, so as to open the lower valve body and discharge the first water amount from the drain port,
Or operating means operable to open the upper valve body independently and to discharge the second valve through the communication hole and the drain port, and wherein the lower opening seat portion and the lower seating portion include The upper opening seat portion and the upper seat portion are disposed on the first surface including the shaft in a closed state of the lower valve body, and the upper opening seat portion and the upper seat portion include the shaft body in a closed state of the upper valve body. A flush water tank device for a toilet bowl, wherein the flush water tank device is disposed on two surfaces, and the second surface is inclined at a predetermined angle with respect to the first surface. 2. The buoyancy chamber according to claim 1, wherein the lower valve body and / or the upper valve body store air therein to determine a water level at which the upper valve body or the lower valve body is closed. Wash water tank device for toilet bowl. 3. A toilet flushing water tank device capable of setting a flushing water drainage amount to a first water amount and a second water amount, wherein the tank body is formed on a tank bottom portion of the tank body, and an upper peripheral portion is formed on the tank body. A drain port having a lower opening seat portion; a lower valve body having a lower seating portion seated on the lower opening seat portion; and a lower valve body having the lower valve body having the lower opening seat portion seated on the lower opening seat portion. A first shaft body rotatably supported at one end of the lower valve body so as to open and close, a communication hole formed in the lower valve body and communicating with the drain port, and an upper peripheral portion of the communication hole. A lower valve body having an upper opening seat portion provided; an upper valve body having an upper seating portion seated on the upper opening seat portion; and an upper valve seat having the upper seating portion seated on the upper opening seat portion. The valve body communicates with the above An upper valve body having a second shaft body rotatably supported at one end of the upper valve body so as to open and close, and provided on an upper wall surface of the tank body to open the lower valve body. So that the first amount of water is discharged from the drain port,
Or an operating means operable to open the lower valve body independently and discharge the second valve through the communication hole and the drain port, and the first shaft body is provided with the tank body. A flush water tank device for a toilet bowl fixed to a lower portion, wherein the second shaft body is provided at an end of the lower valve body. 4. The lower valve body according to claim 3, wherein the second shaft body rotates the upper valve body around the first shaft body in a direction opposite to a direction in which the lower valve body rotates. A flush water tank device for the toilet placed at the end. 5. The flush water tank device for a toilet bowl according to claim 3, wherein the second shaft body is provided on the lower valve body and at a position straddling the communication hole with the first shaft body. 6. The flush water tank device for a toilet according to claim 3, wherein the lower valve body includes a regulating member that regulates a valve opening angle of the upper valve body. 7. The lower valve body according to claim 3, wherein the lower valve body has a narrow angle portion having a narrowed first shaft body side.
A flush water tank device for a toilet, wherein the second shaft body is provided near the narrow angle portion. 8. The container according to claim 3, wherein the lower opening seat portion is provided at a drain port protruding from the tank bottom so as to be inclined at a predetermined angle with respect to the tank bottom. A flush water tank device for a toilet bowl configured to arrange an opening sheet portion on a horizontal plane. 9. The upper valve body according to claim 3, wherein the upper valve body has a buoyancy chamber for storing air therein to determine a water level at which the upper valve body is closed, and the upper valve body is adjacent to the second shaft body. It is provided at the end of the body, and when the lower valve body and the upper valve body are both opened, holds the open state of the upper valve body so that the upper valve body is closed after the lower valve body is closed. A flush water tank device for a toilet, comprising: a holding member; 10. A toilet flushing water tank device capable of setting a flushing water drainage amount to a first water amount and a second water amount, comprising: a tank main body; a tank bottom formed in the tank bottom of the tank main body; A drain port having a lower opening seat portion; a lower valve body having a lower seating portion seated on the lower opening seat portion; and a lower valve body having the lower valve body having the lower opening seat portion seated on the lower opening seat portion. A first shaft body rotatably supported at one end of the lower valve body so as to open and close, a communication hole formed in the lower valve body and communicating with the drain port, and an upper peripheral portion of the communication hole. A lower valve body having an upper opening seat portion provided; an upper valve body having an upper seating portion seated on the upper opening seat portion; and an upper valve seat having the upper seating portion seated on the upper opening seat portion. If the valve body is An upper valve body having a second shaft body rotatably supported at one end of the upper valve body so as to open and close the hole; provided on an upper wall surface of the tank body, and opening the lower valve body Operating means operable to discharge a first amount of water from the drain port and to open the upper valve body alone to discharge the second water amount through the communication hole and the drain port; and A connection member for integrally connecting the upper valve body with the lower valve body when the lower valve body opens or closes, the flush water tank device for a toilet bowl. 11. The operating means according to claim 10, further comprising a lifting member fixed at one end to the lower valve body and lifting the lower valve body, wherein the connecting member is fixed to one end of the lifting member and lifted. A flush water tank device for a toilet bowl configured to integrally connect the upper valve body by lifting a member.