JP4122830B2 - Low tank drain valve - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a low tank drain valve provided in a flush water tank of a toilet.
[0002]
[Prior art]
Conventionally, a flush tank low water tank drain valve has been used for toilet flush water tanks. This dual flush valve type low tank drain valve is incorporated in the wash water tank and has operation buttons for small washing and large washing arranged on the surface of the washing water tank.
Examples of such a dual flush valve type low tank drain valve are described in, for example, U.S. Pat. No. 5,657,494 and U.S. Pat. No. 6,081,938. The low tank drain valve described in these specifications is provided with an operating portion at the upper end, a casing having a lower end communicating with the tank drain, and an inner sleeve having a float and a valve body at the lower end. A feature of the sleeve is that it also serves as an overflow drain pipe.
In addition, as a low tank drain valve considering the operation of the operation section, a solenoid valve is used to lift the valve body in the cylinder to perform a drain operation, for example, Japanese Patent Laid-Open No. 55-92438 and U.S. Pat. No. 6, No. 263,519, as well as a self-cleaning valve described in, for example, US Pat. No. 4,304,015, which uses air pressure to lift the valve body in the pipe to perform drainage. There are also examples.
There are other examples of low tank drain valves that are remotely controlled using steel wire.
[0003]
[Problems to be solved by the invention]
However, in the low tank drain valve having a mechanism for opening and closing the valve body by moving the valve body in the vertical direction as in US Pat. No. 5,657,494, the auxiliary operation portion is disposed above the low tank drain valve. And since the operation part of the casing upper end connected via the rod from the said auxiliary operation part is provided, it was difficult to arrange | position an auxiliary operation part to a free direction and arbitrary positions.
[0004]
On the other hand, in the low tank drain valve aiming at remote control, such as JP-A-55-92438, when the electromagnetic valve is used as a driving means, the valve body on which the head of washing water collected in the low tank is applied is operated. Therefore, it is necessary to generate a great force. Therefore, in order to drive with a solenoid valve, it is necessary to enlarge the solenoid valve itself. For this reason, since the solenoid valve is larger than the low tank drain valve, it is difficult and unstable to incorporate the solenoid valve into the low tank drain valve.
In addition, it was difficult to realize it because it could not be stored in the washing water tank. Particularly, since the shaft is moved to the upper limit by the electromagnetic valve and the valve body is opened by the shaft, a stroke length to be moved up and down of the shaft must be secured, and the mounting in the low tank becomes difficult.
[0005]
Further, when such a solenoid valve is used, it is desirable to provide a manual operation means as a reserve means in case this solenoid valve fails. However, when this solenoid valve is used, it is difficult to easily incorporate the auxiliary operation means by attaching the solenoid valve to the upper end of the low tank drain valve. To achieve this, the structure becomes complicated and the humidity is high. In the low tank, it can also lead to poor operation.
[0006]
Furthermore, in the low tank drain valve that uses steel wire or the like as a remote control means, the low tank drain valve is housed in a narrow wash water tank, so if the wire is forcibly bent and assembled, the torque transmission performance of the wire will be significantly reduced. Therefore, the operation unit can be arranged only at a position where the wire is not bent as much as possible.
[0007]
Then, this invention is providing the compact low tank drain valve which can be accommodated in a low tank. In particular, it is an object of the present invention to provide a low tank drainage valve that can easily operate the operation part with a small force and can arrange the auxiliary operation part of the low tank drainage valve in a free direction and at an arbitrary position.
It is another object of the present invention to provide a low tank drain valve operating device that is compact and can be easily attached to a conventional low tank drain valve by retrofitting.
[0008]
[Means for solving the problems and actions / effects]
In claim 1 of the present invention, a cleaning operation section is provided at the upper end, and the lower end is communicated with the drain tube. Installed inside the washing water tank A casing, and a valve body seated in a valve seat provided in the drain tube in the casing With In the low tank drain valve which operates to open the valve body by driving the valve body upward by operating the operation unit, Built into the tank lid of the washing water tank Large washing button and small washing for Button, this large washing button and small washing for A rod connected to each of the buttons, and each of the operation portions is provided at a position facing each of the rods. Above the casing, an actuator shaft is attached to the actuator shaft. An auxiliary operating device comprising: an arcuate rotary arm arranged so as not to interfere; and a rotary actuator arranged so as to transmit a driving force to an actuator shaft so that the rotary arm can move forward and backward. Provided, when the rotary actuator is driven to rotate the rotary arm in one direction, an operation portion facing a rod connected to the large washing button is operated by one end of the rotary arm, When the rotary arm is rotated in the other direction, the operation part facing the rod connected to the small cleaning button is the other side of the rotary arm. Was low tank drain valve, characterized in that it is operated by the tip.
[0009]
By operating the operation unit using the rotary arm in this way, the movable height of the rotary arm can be kept lower than the actuator shaft that rotates the rotary arm. Can be lowered.
Therefore, this auxiliary operating device can be arranged in a narrow gap between the tank lid and the casing.
The operation unit may be operated by being pushed down or operated by being pulled up.
[0010]
In addition, when attached to a dual flush valve type low tank drain valve as in the prior art (US Pat. No. 5,657,494) , Operation unit The auxiliary operation device can be arranged above the casing so as not to interfere with the rod that contacts the rod. In other words, since it is the rotary arm that operates the operation unit, it is only necessary that the rotary arm be disposed on the operation unit, and the rotary actuator body that transmits the driving force by the actuator shaft is shifted from above the casing. Therefore, the rod and the rotating arm can be arranged so as not to interfere with the upper part of the operation unit. Therefore, the rotary arm of the rotary actuator of The vertical drive can be reliably transmitted to the operation unit. Therefore, the operation unit can be easily operated with a small force for infants and elderly people who cannot take an unreasonable posture. , Stable The drainage operation can be realized.
[0011]
According to a second aspect of the present invention, the rotary actuator includes a motor and a reduction gear that decelerates the rotation of the motor and transmits it to the actuator shaft. It was a valve.
[0012]
In the present invention, the operating portion can be operated with high torque by using the reduction gear. Therefore, a small motor can be used for driving the rotary actuator, so that the auxiliary operation device itself can be made compact.
In particular, in the case of using a conventional solenoid valve, the driving force of the solenoid valve is directly transmitted to the drain valve in order to open the drain valve with the head on, so the solenoid valve itself is enlarged. Although it was necessary to ensure the driving force, it can be operated with high torque by using a motor having a rotating arm and a reduction gear as in the present invention.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
The low tank drain valve of the present invention is provided with a cleaning operation section at the upper end, a casing having the lower end communicating with the drain cylinder, a valve body that is in the casing and is seated on a valve seat provided in the drain cylinder, A float is provided above the valve body, and an inner sleeve that is driven in the vertical direction to realize a valve opening and closing operation is provided.
Above the casing, an auxiliary operation comprising at least an actuator shaft, a rotating arm pivotally attached to the actuator shaft, and a rotary actuator arranged so that the rotating arm can freely rotate forward and backward. Equipment.
Furthermore, when an auxiliary operation unit for operating the rotary actuator is provided, the auxiliary operation unit is operated to drive the rotary actuator of the auxiliary operation device and transmit the driving force to rotate the rotary arm. The operation portion is operated by the rotated rotating arm, and the inner sleeve connected to the operation portion is driven upward, so that the valve opening operation is realized.
[0025]
The rotary actuator preferably includes a motor and a reduction gear that decelerates the rotation of the motor and transmits it to the actuator shaft.
The rotating arm may be V-shaped.
[0026]
In addition, a motor having a super-elastic function is interposed between the rotary actuator and the auxiliary operation unit without providing a motor integrally with the rotary actuator, and the driving force can be transmitted through this wire. Good.
[0027]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In the present invention, when the auxiliary operation unit is operated to drive the rotary actuator arranged on the upper portion of the casing body and transmit the driving force to rotate the rotary arm, the tip of the rotary arm moves the operation unit. Press down.
[0028]
Then, the drive link connected to the operation unit rotates, and when the valve body is opened away from the valve seat by raising the inner sleeve in the low tank drain valve, drainage into the toilet is started, The water level in the tank drops and water supply from the ball tap to the tank is started.
[0029]
When the water level drops to the bottom of the tank and drainage into the toilet is completed, the inner sleeve that has floated due to the float buoyancy descends and sits on the valve seat, so that the tank begins to fill with water again, and the water level further increases. When approaching the full water position, the valve in the ball tap closes and water supply stops.
[0030]
As described above, even in the conventional low tank drain valve, by attaching the rotary actuator of the present invention by retrofitting, it becomes possible to easily perform remote operation and to arrange the operation unit at an arbitrary position. For the advent of an aging society, the operation part of the low tank drain valve can be made barrier-free. In addition, the actuator can be easily installed so as not to interfere with the rod extending from the conventional auxiliary operation part of the push button, and it fits in the washing water tank compactly, so the conventional remote-operated low tank drain valve is replaced with the washing water tank. Compared with the work to assemble, the assembly work efficiency can be improved.
[0031]
FIG. 1 is a view showing an example in which a flush tank 30 is provided with a dual flush valve type low tank drain valve 1 and a ball tap 20 of the present invention.
[0032]
As shown in FIG. 1, a low tank drain valve 1 is incorporated between a tank lid 101 and a tank bottom 102 of a cleaning water tank 30. The low tank drain valve 1 includes an auxiliary operation unit 2 incorporated in a tank lid 101, a casing 3, and a rotary actuator 200 attached to the upper part of the casing.
[0033]
The auxiliary operation unit 2 includes a large washing button 2c and a small washing button 2d arranged with a partition wall 2b sandwiched inside the push button housing 2a, and each of the large washing button 2c and the small washing button 2d. The rods 2e and 2f are connected to each other. A partition wall 2b is located between the large cleaning button 2c and the small cleaning button 2d, and the partition wall 2b blocks the buttons 2c and 2d.
[0034]
The casing 3 is formed with a partition wall 3a on the lower end side and provided with a drain cylinder 4 at the lower end, and the drain cylinder 4 is inserted into a tank bottom opening 102a opened in a tank bottom 102 of a washing water tank. Wash water from the drain tube 4 is supplied to a toilet body (not shown). As shown in the front view of FIG. 2, an opening 3 b communicating with the inside of the washing water tank 30 is opened on the peripheral wall of the casing 3, and water is allowed to flow into the casing 3 from the opening 3 b.
At the upper end of the casing 3, operation portions 5a and 5b are provided at positions facing the rods 2e and 2f. These operating portions 5a and 5b are urged toward the rods 2e and 2f by compression springs 5c and 5d.
[0035]
The rotary actuator 200 is arranged on the upper part of the casing 3, and the rotary arm 200b is arranged and fastened to the rotary actuator shaft 200a so as not to interfere with the rods 2e and 2f. When rotating clockwise (counterclockwise) or rightward (clockwise), the rotary arm tips 200c and 200d push down the operation portions 5a and 5b, respectively.
[0036]
FIG. 2 is a front view of the low tank drain valve 1 shown in FIG.
[0037]
FIG. 3 is an internal mechanical view of the low tank drain valve 1 shown in FIG.
As shown in FIG. 3, a support shaft 6 is fixed inside the casing 3, and a pair of drive links 7 and 8 are rotatably held around the support shaft 6. Operation arms 9 and 10 are connected to the drive links 7 and 8, respectively.
An inner sleeve 11 is connected to the lower end of the operation arm 9, and an outer sleeve 12 is connected to the lower end of the operation arm 10. The inner sleeve 11 is provided with a packing 11c as a valve body at the lower end, and a float 11d is formed above the packing 11c. The outer sleeve 12 has a bowl-shaped waiter 12a capable of storing water so that the height position can be adjusted, and a cam 13 on the upper end side so as to be rotatable in the vertical direction.
The cam 13 is integrally formed with a link rod 13a at the upper end side thereof and is connected to the outer sleeve 12 by a pivot 13b provided at the base end of the link rod 13a. And the front-end | tip part of the link rod 13a is contact | abutted to the operation arm 9 via the pin 13c. When the operation arm 13 is raised and the pin 13c moves in contact with the operation arm 9, the cam 13 can rotate clockwise around the pivot 13b. And when it exists in a stationary position, it is set as the positional relationship of the member in which the lower end of the outer sleeve 12 is seated on the partition 3a.
[0038]
FIG. 4 is an isometric view of the low tank drain valve 1.
[0039]
FIG. 5 is a view of the low tank drain valve 1 shown in FIG. From the figure, it can be seen that the rotary arm 200b of the rotary actuator is arranged so as not to interfere with the rods 2e and 2f.
[0040]
In FIG. 6, the rotary actuator 200 is arranged on the casing lid 3 c of the low tank drain valve 1 shown in FIG. 1.
As shown in FIG. 6, the rotary actuator 200 is fixedly attached to the casing lid 3b and has a rotary actuator base 200e having a through hole for attaching the rotary actuator shaft 200a, and a rotary actuator base 200e. A motor or wire is directly joined to one end, and a rotary actuator shaft 200a with a rotating arm 200b attached and fixed to the other end, and an operating portion 5a, 5b at both ends in a bow shape. And a rotary arm 200b having rotary actuator tips 200c and 200d.
[0041]
FIG. 7 shows that in the rotary actuator 200 of FIG. 6, the rotary arm 200b is turned upside down and pivotally attached, and the valve opening operation can be performed by pushing up the operation portions 5a and 5b.
From the figure, the rods 2e and 2f are coupled to or integrated with the operation portions 5a and 5b, respectively. Further, since the drive link (not shown) is removed and the operation portion and the inner sleeve are directly connected (not shown), the valve can be opened by an operation of pushing up the rod from the auxiliary operation portion.
In this structure, since the drive link for converting the pushing-down operation of the operation unit into the pushing-up operation of the inner sleeve can be omitted, the height of the low tank drain valve can be further reduced.
[0042]
FIG. 8 is a view in which the motor 40 is directly attached to the rotary actuator 200 shown in FIG. This is the position of the origin of the motor 40 and the operation units 5a and 5b. It can be seen that the motor is assembled compactly.
[0043]
FIG. 9 shows the operation of the rotary actuator during large cleaning. The motor rotates clockwise (clockwise) toward the front view, and the rotary arm tip 200c of the rotary arm 200b pushes the operation portion 5a. FIG.
In the case of large cleaning, when a command to execute large cleaning is given from the motor drive controller 51 to the motor 40, the motor starts to rotate rightward (clockwise) as shown in FIG. The fastened rotary actuator shaft 200a simultaneously rotates right (clockwise). Then, the rotary arm 200b inserted and fitted to the rotary actuator shaft 200a similarly rotates clockwise (clockwise), and the rotary actuator tip 200c pushes the operating portion 5a into contact with the casing button lid 3c. The operation unit 5a is held at the lowest point pushing position of the operation unit 5a for 0.5 to 1 second, and is rotated in the reverse direction (counterclockwise) again to return to the origin position in FIG. Since the operating portion 5a is biased by the spring 5c, the operating portion 5a returns to the origin position while contacting the rotary actuator tip 200c.
[0044]
FIG. 10 is a diagram showing a rotary actuator at the time of small cleaning, in which the motor rotates counterclockwise (counterclockwise) toward the front view, and the rotary arm tip 200d pushes the operation portion 5b.
Similarly, in the case of small cleaning, when a command to execute small cleaning is given from the motor drive controller 51 to the motor 40, the motor starts to rotate leftward (counterclockwise) toward the front as shown in FIG. The rotary actuator shaft 200a fastened to the motor shaft also rotates counterclockwise (counterclockwise) at the same time. Then, the rotary arm 200b inserted and fitted to the rotary actuator shaft 200a similarly rotates counterclockwise (counterclockwise), and the rotary actuator tip 200d pushes the operating portion 5b into contact with the casing lid 3c. The operation unit 5b is held at the lowest point pushing position of the operation unit 5b for 0.5 to 1 second, rotated again in the reverse direction (clockwise), and returned to the origin position in FIG. Since the operation portion 5b is biased by the spring 5d, the operation portion 5b returns to the origin position while contacting the rotary actuator tip 200d.
[0045]
FIG. 11 is a view in which a waterproof case lid 74 is attached to a waterproof case 73 in which a motor equipped with a reduction gear is loaded, the rotary arm 200b is attached to the shaft, and the rotary arm 200b is fixed by a removal prevention pin 75. The waterproof case 73 and the waterproof case lid 74 are waterproofed with a sealant, and the motor shaft and the waterproof case are sealed with an O-ring.
[0046]
FIG. 12 shows a structure in which a bellows-shaped elastic body 77 is stretched around the outer peripheral portion of the waterproof case 73 that is the fixed portion and the rotating arm 200b that is the rotating portion, and both ends of the elastic end are fixed to the respective portions. The rotation contact portion 79 is completely waterproofed. Even if the bellows-shaped elastic body is damaged and water is generated, an O-ring 76 is loaded between the motor shaft 72 and the waterproof case 73 to form a double waterproof seal structure. Can completely prevent flooding.
[0047]
In FIG. 13, a ring-shaped elastic body 78 is stretched across the fixed end and the rotating end on the outer peripheral portion of the waterproof case 73 that is the fixing portion and the rotating arm 200 b that is the rotating portion in FIG. 11. The ring-shaped elastic body is sealed against the outer peripheral portion by utilizing the contraction function of the elastic body.
Since the rotating arm 200b rotates forward and backward within a range of at least 90 degrees, the contact portion between the rotating arm 200b and the elastic body slides. Therefore, although some water intrusion occurs, Since the O-ring 76 is loaded between the waterproof cases 73 to form a double waterproof seal structure, it is easy to prevent water from entering the motor.
[0048]
FIG. 14 is a cross-sectional view of the low tank drain valve.
FIG. 15 is a cross-sectional view when the motor receives a “large washing” drive command and starts to rotate in the clockwise direction (clockwise).
When the operating portion 5a is pushed down via the rotary actuator tip 200c as shown in FIG. 9, the drive link 7 is rotated clockwise around the support shaft 6 as shown in FIG. The operation arm 9 is lifted upward by the rotation of the drive link 7, and the operation arm 9 makes the upper end of the inner sleeve upper ring 11e contact the projection 11a of the inner sleeve 11 to lift the inner sleeve 11 upward. When the inner sleeve 11 is lifted, the packing 11 c is opened when the inner sleeve 11 is separated from the valve seat 4 a at the upper end of the drain tube 4. (See Figs. 15, 16, and 17)
At this time, the wash water stored in the washing tank 30 flows through the drain tube 4 to the toilet body (not shown), and the filth in the toilet bowl is washed away.
[0049]
On the other hand, when the water level in the cleaning tank 30 starts to drop, the ball tap float (not shown) of the ball tap 20 starts to drop along the water surface, so that the water stop valve (not shown) of the ball tap 20 opens and the ball tap discharges. Water supply into the cleaning tank 30 is started from the water port 20c.
[0050]
When the drainage for toilet flushing is nearly complete, the water level in the washing tank approaches to the vicinity of the float 11d of the low tank drain valve. At that time, the weight of the inner sleeve 11 becomes larger than the buoyancy of the float 11d, the inner sleeve 11 is lowered, the packing 11c is seated on the valve seat 4a, and the drainage stops. (See Figure 14)
At this time, the water surface in the cleaning tank 30 starts to rise.
When the water level in the cleaning tank 30 continues to rise and approaches the position of the WL (water line) when the water is full, the ball tap float (not shown) of the ball tap 20 also rises along the water level and is joined to the ball tap float. The water stop valve (not shown) inside 20 is closed to stop water supply, and the large washing cycle is completed.
[0051]
Next, in the case of small cleaning, the rotary actuator 200 rotates counterclockwise (counterclockwise) as shown in FIG. 10 and the rotary arm tip 200d pushes the operation portion 5b. Omission) The packing 11c is opened after it is separated from the valve seat 4a at the upper end of the drain tube 4. (See FIGS. 19 and 20)
At this time, the water stored in the washing tank 30 similarly flows through the drain tube 4 to the toilet body (not shown) to wash away the filth in the toilet bowl.
[0052]
On the other hand, when the water level in the cleaning tank 30 starts to drop, the ball tap float (not shown) of the ball tap 20 starts to fall along the water surface, so that the water stop valve (not shown) of the ball tap 20 opens and the ball tap Water supply into the cleaning tank 30 is started from the water outlet 20c. (See Figure 21)
[0053]
When the drainage for toilet bowl small cleaning approaches completion, the water surface in the cleaning tank 30 approaches to the vicinity of the waiter 12a of the low tank drain valve 1. At that time, the weight of the water added to the inner sleeve 11, the outer sleeve 12, and the waiter 12a becomes larger than the buoyancy of the float 11d, the inner sleeve 11 is lowered, and the packing 11c is seated on the valve seat 4a. Since drainage stops, the water surface in the cleaning tank 30 starts to rise. (See FIGS. 22 and 23)
When the water level in the cleaning tank 30 continues to rise and approaches the WL (water line) when it is full, the ball tap float (not shown) of the ball tap 20 also rises along the water level and is joined to the ball tap float (not shown). Then, a water stop valve (not shown) inside the ball tap 20 is closed to stop water supply and complete the small cleaning cycle.
(See Figure 14)
[0054]
The inner sleeve 11 described above has a cylindrical shape with opened upper and lower ends. When the water level in the tank becomes higher than the inner sleeve 11, the inner sleeve 11 is inserted into the toilet bowl via the inner sleeve 11. It has a structure with an overflow mechanism for draining.
[0055]
In FIG. 24, the wire 60 is joined to the rotary actuator 200, and the motor 40 is joined to the end of the other wire.
In this case, a superelastic functional material is used for the wire 60. Therefore, even if the wire 60 is bent greatly, the motor 40 can be arranged freely because of excellent torque transmission. Since the motor 40 is hardly affected by water by disposing the motor 40 outside the cleaning tank 30 from this, the motor waterproof function can be omitted or simplified.
[0056]
FIG. 25 is a view in which a rotary operation lever 41 is joined to the end of the other wire 60 in place of the motor 40 of FIG. Since the connection is made by the wire 60, the rotary operation lever 41 can be arranged at any position.
[0057]
Similarly, FIG. 26 is a diagram in which a push button type operation switch 42 is connected to the end of the other wire 60 instead of the motor 40 of FIG. Since the connection is made by the wire 60, the push button type operation switch 42 can be arranged at any position.
[0058]
FIG. 27 is an exploded view of the push button type operation switch 42, which is composed of a push button case 42a, a rotating disk 42b, and push button switches 42c and 42d for large and small washing, respectively.
[0059]
FIG. 28 is an internal mechanical view of the push button case 42a of the push button type operation switch 42 shown in FIG. As shown in the figure, a rotating disk foot 42g for connecting wires and rotating disk arms 42e and 42f project from the rotating disk 42b, and the rotating disk arms 42e and 42f are respectively The push button switches 42c and 42d are in contact with the bottom surfaces cut obliquely.
[0060]
In FIG. 29, when the push button switch 42d is pressed, the rotary disk arm 42f is in contact with the bottom surface of the push button switch 42d, so that the rotary disk 42b rotates in the direction of the arrow in FIG. This rotational motion is transmitted to the rotary actuator 200 joined to the end of the other wire through the wire 60 joined to the rotating disk foot 42g, and the drainage cycle of the low tank drain valve is started. .
[0061]
FIG. 30 is an overall view of the stepping type operation unit 43.
As shown in the figure, the foot-operated operation unit 43 has a flat bottom portion that comes into contact with the floor, and has a pedestal binge attachment portion 43m for attaching the left and right foot pedals 43b and 43c to one end and the other. Has a rotating disk holding pedestal 43n having a through hole for axially mounting the rotating disk 43h, and a foot-operated operation unit pedestal 43a having a spring fixing projection 43s for inserting a spring on the upper surface thereof. On the other hand, there is a pedal hinge mounting part 43p for buttering with the foot-operated operation unit base 43a at one end, and a left projecting part 43q with a rounded tip on the entire lower side of the other end. The right foot pedal 43b, 43c, the rotating disk foot 43g for connecting the wire, and the rotating disk 4 with the rotating disk arms 43e, 43f projecting out. h, a coupling ring 43k for pivotally attaching the rotary disk 43h to the foot-operated operation unit base 43a and coupling, and a compression spring 43d for biasing the left and right foot pedals to be flipped up and held It is configured.
[0062]
In FIG. 31, when the foot pedal 43b shown in FIG. 30 is pressed, the rotary disk arm 43e is brought into contact with the protruding portion 43q of the foot pedal 43b and rotates in the direction of the arrow in FIG. This rotating operation is transmitted to the rotary actuator 200 joined to the end of the other wire through the wire 60 joined to the rotating disc foot 43g, and the draining cycle of the low tank drain valve is started thereafter. .
[0063]
FIG. 32 is an isometric view showing the entire state where the low tank drain valve is assembled to the cleaning tank, the front side of the cleaning tank is cut, and the operation operation unit 50 and the motor drive controller 51 are mounted.
In addition, although the low tank drain valve mentioned above is providing the operation part of a large washing and a small washing, it is good also as an operation part only for a large washing.
[Brief description of the drawings]
FIG. 1 is a plan view of a main part showing an example in which a flush tank low valve drain valve and a ball tap of the present invention are provided in a washing water tank.
FIG. 2 is a front view of a low tank drain valve as viewed from the front.
FIG. 3 is an internal mechanism diagram of the low tank drain valve casing as viewed from the front with the upper part of the casing removed.
FIG. 4 is an isometric view of a low tank drain valve.
FIG. 5 is a right side view of the low tank drain valve.
FIG. 6 is an isometric view of a rotary actuator mounted on a casing lid.
FIG. 7 is an isometric view in which a motor is directly mounted on a rotary actuator.
FIG. 8 is a diagram in which a rotary arm is turned upside down and pivotally attached to a rotary actuator, and shows that a valve opening operation can be performed by pushing up an operation unit.
FIG. 9 is a diagram in which the rotary actuator receives a large cleaning command, rotates right (clockwise), and stops at the maximum right rotation angle.
FIG. 10 is a diagram in which a rotary actuator receives a small cleaning command, rotates counterclockwise (counterclockwise), and stops at a maximum counterclockwise rotation angle.
FIG. 11 is a diagram in which a motor with a reduction gear is attached to a waterproof case and a rotary arm 200b is axially attached.
12 is a cross-sectional view of the bellows-shaped elastic body attached to FIG.
13 is a cross-sectional view in which a ring-shaped elastic body is mounted in FIG.
FIG. 14 is a diagram showing a stationary state of the low tank drain valve.
FIG. 15 is a diagram showing an operating state of a low tank drain valve during large cleaning.
FIG. 16 is a diagram showing an operating state of a low tank drain valve during large cleaning.
FIG. 17 is a view showing an operating state of a low tank drain valve during large cleaning.
FIG. 18 is a diagram showing an operating state of a low tank drain valve during large cleaning.
FIG. 19 is a diagram showing an operating state of a low tank drain valve during small cleaning.
FIG. 20 is a diagram showing an operating state of a low tank drain valve during small cleaning.
FIG. 21 is a diagram showing an operating state of a low tank drain valve during small cleaning.
FIG. 22 is a diagram showing an operating state of a low tank drain valve during small cleaning.
FIG. 23 is a diagram showing an operating state of a low tank drain valve during small cleaning.
FIG. 24 is a view in which a motor is joined to the other end of a wire joined to a rotary actuator.
FIG. 25 is a view in which a rotary operation lever is joined to the other end of the wire joined to the rotary actuator.
FIG. 26 is a view in which a push button type operation switch is joined to the other end of the wire joined to the rotary actuator.
FIG. 27 is a view in which a push button type operation switch is joined to the other end of the wire joined to the rotary actuator.
FIG. 28 is an exploded view of a push button type operation switch.
FIG. 29 is an internal structure diagram of the push button type operation switch with the case body removed.
FIG. 30 is a diagram showing an operating state of the push button type operation switch.
FIG. 31 is a diagram showing the entire stepping type operation unit.
FIG. 32 is a diagram showing an operating state of the stepping type operation unit.
[Explanation of symbols]
1 Low tank drain valve
2 Auxiliary operation section
2a push button housing
2b Bulkhead
2c Large washing button
2d Button for small washing
2e, 2f rod
3 Casing
3a Bulkhead
3b opening
3c Casing lid
4 Drain tube
4a Valve seat
5a, 5b Operation unit
5c, 5d spring
6 Support shaft
7, 8 Drive link
9, 10 Operation arm
11 Inner sleeve
11a protrusion
11b Engagement protrusion
11c packing
11d float
11e Inner sleeve upper ring
12 Outer sleeve
12a Waiter
13 cams
13a Ring rod
13b Axis
13c pin
20 ball tap
20a Ball tap spout
30 Washing water tank
40 motor
41 Rotary control lever
42 Pushbutton operation switch
42a push button case
42b Rotating disc
42c, 42d push button switch
42e, 42f Rotating disc arm
42g rotating disc foot
43 Foot-operated operation unit
43a Foot-operated operation unit base
43b, 43c Foot pedal
43d spring
43e, 43f Rotating disc arm
43g rotating disc foot
43h Rotating disc
43k coupling ring
43m base hinge mount
43n Rotating disk holding base
43p Pedal hinge mounting part
43q protruding part
43s Spring fixing protrusion
50 Remote control unit
51 Motor drive controller
60 wires
70 motor
71 Reduction gear section
72 Motor shaft
73 waterproof case
74 Waterproof case lid
75 Pin prevention pin
76 O-ring
77 Bellows-shaped elastic body
78 Ring-shaped elastic body
79 Rotating contact
101 Tank lid
102 Tank bottom
102a Tank bottom opening
200 Rotary actuator
200a Rotary actuator shaft
200b Rotating arm
200c, 200d Rotating arm tip
200e Rotary actuator base

Claims (2)

An operation unit for cleaning provided at the upper end, a casing provided inside the flushing water tank by communicating the lower end the drain tube, and a valve body seated on the valve seat provided in the drainage tube be within casing In a low tank drain valve that opens and operates the valve body upward by operating the operation unit,
A large flushing button and small flushing button incorporated in the tank lid of the flushing water tank, and a rod connected to each of the large cleaning button and small cleaning button, position opposing the respective rod Each of which is provided with the operation unit,
Above the casing, an actuator shaft, an arcuate rotary arm that is attached to the actuator shaft so as not to interfere with the rod, and the actuator shaft is driven so that the rotary arm can freely rotate in the forward and reverse directions. An auxiliary operating device comprising a rotary actuator arranged to transmit force,
When the rotary actuator is driven to rotate the rotary arm in one direction, an operation portion facing a rod connected to the large washing button is operated by one end of the rotary arm, and the rotary arm The low tank drain valve is characterized in that when the is rotated in the other direction, the operation portion facing the rod connected to the small cleaning button is operated by the other end of the rotary arm.   The low tank drain valve according to claim 1, wherein the rotary actuator includes a motor and a reduction gear that reduces the rotation of the motor and transmits the reduced speed to the actuator shaft.

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