JP3594451B2 - Drainage mechanism of water supply control device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a drainage mechanism of a water supply control device that controls the supply of cleaning water supplied to a sanitary washing device or the like.
[0002]
[Prior art]
2. Description of the Related Art In recent years, a sanitary washing apparatus has been used in which a local area after stool is washed with washing water (warm water) so that post-treatment is performed in a hygienic manner. FIG. 5 is a perspective view showing a sanitary flush toilet seat generally used today. Reference numeral 1 denotes a toilet seat which is attached to the upper rear of a Western-style toilet 2 together with a toilet lid 3 so as to be openable and closable. , A sanitary washing device 4 mounted on the Western toilet 2 is additionally provided. Then, as shown in FIG. 6, a water supply pipe 5 connected to a water pipe (not shown), and hot water can be optimally spouted from the lower side of the toilet seat 1 toward the local area inside the sanitary washing device 4 as shown in FIG. Between the nozzle 6 attached to the nozzle 6 so as to be able to move forward and backward and the water supply pipe 5 and the nozzle 6, the supply and cutoff of tap water (hereinafter referred to as washing water) supplied from the water supply pipe 5 to the nozzle 6 is controlled. And a heating device 8 for heating the washing water to a predetermined temperature suitable for local washing. The washing water heated to a washable temperature by the heating device 8 is jetted from the nozzle 6 toward the local portion. Thereby, it is configured to perform local cleaning.
[0003]
The water supply control device 7 for washing water installed in the sanitary washing device 4 is generally configured, for example, as shown in FIG. That is, in FIG. 7, reference numeral 9 denotes a valve fitting tube which is connected to the water supply pipe 5 and allows washing water supplied from a water pipe (not shown) to flow into the valve chamber 10. A tapered valve port 10a is formed substantially at the center in the vertical direction. Reference numeral 11 denotes a valve body that opens and closes a valve port 10a of the valve fitting cylinder 9. A valve rod 12 is integrally provided at the center of the valve body 11 so as to project into the valve chamber 10. The valve rod 12 has a communication hole 15 communicating with the valve chamber 10 having a distal end interposed between an valve fitting cylinder 9 and a valve base 13 having a valve chamber 10 via an O-ring 14. The valve body 11 is inserted into the valve fitting cylinder 9 by passing through the bearing 17 of the support 16 and locking the locking body 18 provided at the tip of the valve rod 12 on the valve chamber 10 side of the bearing 17. To support slidable movement along the axial direction. Reference numeral 19 denotes a coil spring which is inserted through the valve rod 12 and interposed between the valve body 11 and the valve support 16, and constantly presses and biases the valve body 11 toward the valve port 10a.
[0004]
When the washing water flows into the valve fitting cylinder 9 through the water supply pipe 5, the pressure of the washing water pushes the valve body 11 toward the valve chamber 10 against the urging force of the coil spring 19, and the valve port is opened. 10a is opened, and the washing water is allowed to flow into the valve chamber 10 through the water supply pipe 5 → the valve fitting cylinder 9 and the water supply is stopped, so that the valve element 11 closes the valve port 10a by the urging force of the coil spring 19. Push in the direction. As a result, the inside of the valve fitting cylinder 9 and the valve chamber 10 is filled with the inflowing washing water. In addition, when the water supply source of the washing water is closed, the valve port 10 a is closed by the valve body 11.
[0005]
Next, in FIG. 7, reference numeral 20 denotes a pressure reducing valve connected to the valve chamber 10. The pressure reducing valve 20 is connected to the valve housing 10 by a fixing means (not shown) and a valve housing 21 having a flow path communicating with an inlet of an electromagnetic valve described later. The valve seat 22 includes a valve seat 22 mounted between the valve seat 22 and a valve shaft 23 that is swingably mounted in the valve seat 22 and that changes an opening cross-sectional area of the valve seat 22. The distance between the valve seat 22 and the valve 23a is changed by the urging force of the spring 26 on the valve chamber 25 side divided by the diaphragm valve 24, even if the water pressure of the washing water is changed by an external factor. The cleaning water flowing in the control device 7 is configured to always flow at a predetermined pressure.
[0006]
7 is a diaphragm valve 30 that opens and closes an inlet 28 and an outlet 29, and a movable iron core 33 that slides in a guide cylinder 32 in the axial direction by exciting and demagnetizing an exciting coil 31. When the exciting coil 31 is energized by energization, the movable iron core 33 attracts the exciting coil 31 against the compression spring 34 when the exciting coil 31 is energized by energization. It moves upward in FIG. 7 by the action. Then, the diaphragm valve 30 is pushed toward the movable iron core 33 by the water pressure of the washing water supplied from the inflow port 28 to open the valve port 35, and the inflow port 28 and the outflow port 29 are communicated. When the energization of the exciting coil 31 is cut off, the movable core 33 is released from the attraction action, and is pushed toward the diaphragm valve 30 by the urging force of the compression spring 34 to move the diaphragm valve 30 downward in FIG. By pushing back, the valve port 35 is closed, the space between the inflow port 28 and the outflow port 29 is closed, and the supply and cutoff of the cleaning water supplied to the nozzle 6 via the heating device 8 is controlled.
[0007]
[Problems to be solved by the invention]
However, the water supply control device 7 has the following problems. That is, the water supply control device 7 pushes the valve body 11 by the water pressure to open the valve port 10 a to wash the water supplied to the valve fitting cylinder 9 through the water supply pipe 5 and into the valve chamber 10. When the supply of the washing water is stopped at the water supply source, the valve element 11 is pushed by the urging force of the coil spring 19 to completely close the valve port 10a, and the flow path of the washing water. To close. As a result, the cleaning water that has flowed into the valve chamber 10 by opening the valve port 10a of the valve body 11 remains in the valve chamber 10 with the stop of the water supply of the water supply source and is left undisturbed.
[0008]
When the sanitary washing device 4 using the conventional water supply control device 7 is used in, for example, a cold region, when the sanitary washing device 4 is not used for a certain period, the sanitary washing device 4 remains in the valve chamber 10 of the water supply control device 7. Without draining some of the wash water, residual water can often freeze in winter. When the washing water freezes in the valve chamber 10 due to freezing and expands in volume, the connecting portion 37 between the valve fitting cylinder 9 and the valve base 13 fastened and fixed by the fastening screw 36 causes the freezing water during freezing. Are separated by a force caused by volume expansion due to icing, and there is a problem that it is difficult to maintain a water-tight structure because a gap is formed in the connecting portion 37.
[0009]
Then, once a gap is formed in the joint portion 37 as described above, it is not possible to return (sealing) the joint portion 37 to its original position, and the frozen washing water is thawed as the temperature rises during the day. May leak from the connecting portion 37 in accordance with the above. Further, in the above-described state, when the cleaning water is supplied from the water supply pipe 5 to the valve fitting cylinder 9 when the sanitary cleaning device 4 is used, the cleaning water leaks from the gap formed in the coupling portion 37. There is a problem that the inside and outside of the sanitary washing device 4 shown in the drawing is soaked in water.
[0010]
The present invention has been made in view of the above problems, and when the sanitary washing device is not used for a certain period of time, washing water remaining in the valve chamber of the water supply control device freezes, thereby preventing damage to the watertight structure of the water supply control device. An object of the present invention is to provide a water drainage mechanism of a water supply control device that prevents the water supply.
[0011]
[Means for Solving the Problems]
The drainage mechanism of the water supply control device according to claim 1 , wherein a valve pedestal is provided on an upper portion of a mounting guide tube communicating with a water supply source, and a lower portion in a valve chamber formed inside the valve receiving pedestal in communication with the mounting guide tube. passage is nono below diaphragm portion, vertically movably fitted insert the valve body to form a water discharge hole between the lower diaphragm portion to said valve chamber, to the mounting guide tube, which communicates with the water supply of mounting a drain tap having the internal freely pulled out, the lower portion of the valve body, mounting the occluder to block the flow path in contact with the drain tap, removing the drain tap from the mounting guide tube Accordingly, characterized in that the pre Ki吐 water hole or al the valve residual water chamber to discharge to the outside.
[0012]
The valve body in the water drainage mechanism of the water supply control device according to claim 2 includes a plurality of support arms bent upward from the periphery of the circular bottom plate, and the valve body is provided with the support arm facing upward in the valve chamber. It is housed so as to be able to move up and down, and a water discharge hole for communicating the valve body and the valve chamber is formed between the support arms of the valve body.
[0013]
The valve body in the water drainage mechanism of the water supply control device according to claim 3, wherein a bottomed cylindrical sliding guide is housed in the valve chamber so as to be vertically movable, and the outer peripheral surface of the sliding guide has the flow passage and the valve chamber. And a water discharge groove for communicating the water with the water is formed.
[0014]
The drainage plug in the drainage mechanism of the water supply control device according to claim 4 is provided with a flow passage communicating with a water supply source by piercing the inside into a hollow shape, and always providing a wash water between a flow path front end and a closing member. A passage is formed, the passage is closed when the water supply source is stopped, and the water discharge hole of the valve body is opened when the mounting guide tube is opened.
[0015]
[Action]
The drainage mechanism of the water supply control device of the present invention is provided with a valve support at an upper portion of a mounting guide tube communicating with a water supply source, and a lower portion of a valve chamber formed inside the valve receiver in communication with the mounting guide tube. internal is nonoxynol the diaphragm portion, vertically movably fitted insert the valve body to form a water discharge hole between the lower diaphragm portion to said valve chamber, to the mounting guiding tube, a flow path communicating with the water supply source has been drainage mounted stoppered freely pulled out, the lower portion of the valve body, mounting the occluder to block the flow path in contact with the drain tap by the drain tap removed from the mounting guide tube, the and then, is discharged before Ki吐 water hole or al the valve residual water chamber to the outside, well the problem of damaging the watertight structure of the valve chamber by the freezing of the washing water remaining in the valve chamber in winter Can be solved.
[0016]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4, the same components as those shown in FIGS. 6 and 7 are denoted by the same reference numerals. In FIG. 1, reference numeral 38 denotes a water supply control device installed in the sanitary washing device 4 shown in FIG. 6, and reference numeral 39 denotes washing water supplied from a water pipe (not shown) connected to the water supply pipe 5 into the water supply control apparatus 38. It is an inflow pipe for inflow. Reference numeral 40 denotes a mounting guide tube in which the inflow pipe 39 is fitted to the side, and a water drainage plug mounting opening 43 for opening a water drainage plug 42 provided with a screw portion 41 at a lower portion so as to be detachably screwed therein is provided. At the upper part, a lower throttle portion 46 for supporting a valve receiving base 45 having a valve chamber 44 formed by expanding a water passage above the drain plug 42 is formed.
[0017]
In the valve chamber 44, as shown in FIG. 2, a valve element 49 having a support arm 48 formed by bending upward in an L-shape at equal intervals at the periphery of a circular bottom plate 47, The base end 50 of the support arm 48 is vertically movably mounted on and housed on the lower throttle 46 of the valve chamber 44, and is always between the bottom plate 47 and the upper throttle 51 of the valve chamber 44. The coil spring 52 is pressed and urged toward the lower squeezed portion 46 by the inserted coil spring 52. As a result, a water discharge hole 53 is formed between the lower throttle portion 46 of the valve chamber 44 and the valve element 49 between the support arms 48 as shown in FIGS. At the lower end of the valve element 49, as shown in FIG. 4, a downwardly projecting projection 54 is formed with a step, and the water having a hollow upper part formed at the step. A closing member 56 made of an elastic member for closing the flow channel 55 in the stopper 42 is irremovably secured.
[0018]
When the washing water flows from the water pipe (not shown) to the inflow pipe 39 through the mounting guide cylinder 40 and the water holes 57 and 57a formed in the water tap 42, the washing water flows into the flow path 55 of the water tap 42. As shown in FIG. 1, the valve element 49 housed in the chamber 44 so as to be movable up and down is pushed upward by the water pressure of the washing water filled in the flow path 55, and the water blocked by the closing material 56. The flow channel 55 of the stopper 42 is opened, and the washing water flows into the valve chamber 44 from the water discharge hole 53.
[0019]
The washing water flowing into the valve chamber 44 is reduced to a predetermined water pressure by the pressure reducing valve 20 provided by a fixing means (not shown) on the valve receiving base 45, as in the case of the water supply control device 7 shown in FIG. After that, the supply and cutoff of the washing water supplied to the nozzle 6 via the electromagnetic valve 27 and the heating device 8 shown in FIG. 6 is controlled.
[0020]
Further, when the washing water supplied from the water pipe (not shown) through the inflow pipe 39 into the flow channel 55 of the water drainage stopper 42 stops supplying water at the supply source, the valve element 49 is pushed back downward by the urging force of the coil spring 52. Then, the base end 50 of the support arm 48 of the valve body 49 is mounted on the lower throttle portion 46 of the valve chamber 44, and the flow path 55 of the water drain plug 42 is closed by the closing member 56 attached to the lower end of the valve body 49. Close.
[0021]
As a result, as shown in FIGS. 1 and 4, the cleaning water remaining in the valve chamber 44 is discharged from a water discharge hole 53 formed between the valve body 49 and the lower throttle portion 46 of the valve chamber 44. Through the inner peripheral wall of the mounting guide cylinder 40 to prevent leakage, but the water is prevented by the O-ring 58 provided on the outer peripheral wall of the drain plug 42 in a watertight manner, and the cleaning water leaks out. Not at all. Further, since the O-ring 59 is provided in the water drainage plug 42 under the screw portion 41 in a watertight manner, the washing water flowing from the inflow pipe 39 leaks outside through the screw portion 41. Prevent surely. Therefore, the inside and outside of the sanitary washing device 4 shown in FIG.
[0022]
When the washing water remaining in the valve chamber 44 is drained as required, that is, when the sanitary washing device 4 is not used for a certain period, the lower casing of the sanitary washing device 4 shown in FIG. As shown in FIG. 4, the drain plug 42 projecting downward from 4 a is unscrewed and removed from the drain plug mounting port 43 of the mounting guide tube 40 to remove the valve body 49 and the valve chamber 44. Wash water remaining in the valve chamber 44 can be discharged out of the mounting guide tube 40 from a water discharge hole 53 formed between the holes 46.
[0023]
As described above, by providing the water supply control device 38 with the drainage mechanism for discharging the cleaning water remaining in the valve chamber 44, the cleaning water remaining in the valve chamber 44 freezes in winter or the like. As a result, the problem that the watertight structure of the valve chamber 44 is damaged by the force generated at the time of the volume expansion or a water leak accident occurs due to the damage is solved, and the sanitary washing device 4 is used in a stable state for a long time. It was possible to do.
[0024]
Further, the valve body of the present invention is not limited to the structure shown in FIG. 2, but as shown in FIG. 3, a plurality of water discharge grooves 61 are formed in the outer peripheral surface of a sliding guide 60 formed in a bottomed cylindrical shape. The present invention can be realized even when the cut-out valve body 62 is used by being housed in a vertically movable manner on the lower throttle portion 46 of the valve chamber 44.
[0025]
【The invention's effect】
The water drainage mechanism of the water supply control device according to the present invention is characterized in that a water drainage plug is detachably mounted on a mounting guide tube communicating with a water supply source, on a valve body having a water discharge hole formed between the valve body and a lower part of the valve chamber. the occluder for closing the road provided, since it is configured to be easily drained water discharge holes or al valve residual water chamber formed between the valve body and the valve chamber upon removal of the drain tap, in winter or the like The problem that the valve chamber is damaged by freezing of the cleaning water remaining in the valve chamber can be surely solved.
[0026]
Further, the valve element used for the water drainage mechanism of the water supply control device is formed with a plurality of support arms bent upward from the periphery of the circular bottom plate, and the valve element is connected to the valve chamber via the support arm. The valve body has a water discharge hole for allowing the valve body to communicate with the mounting guide cylinder communicating with the water supply source between each support arm and the lower part of the valve chamber. It can be conveniently formed.
[0027]
Further, the valve body used in the water drainage mechanism of the water supply control device is formed by forming a water discharge groove by cutting out the outer circumference of the bottomed cylindrical sliding guide by a plurality of lines, so that the valve body is easily manufactured. The water supply control device can be manufactured easily and economically.
[0028]
Furthermore, since the water drainage stopper used for the water drainage mechanism of the water supply control device is formed such that the water drainage stopper itself is formed in a hollow shape and a flow path is provided, the flow control of the washing water by opening and closing the valve body and the valve chamber opening and closing are performed. Opening and closing can be easily performed, and since the drainage of the valve chamber can be reliably performed when the sanitary washing device is not used, the adverse effect due to freezing of residual water can be satisfactorily eliminated.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a water supply control device of the present invention.
FIG. 2 is a perspective view of a valve body used in the water supply control device of the present invention.
FIG. 3 is a perspective view showing another embodiment of the valve body used in the water supply control device of the present invention.
FIG. 4 is a longitudinal sectional view showing a state in which a water tap is removed from the water supply control device of the present invention.
FIG. 5 is a perspective view showing a Western style toilet provided with a sanitary washing device in which the water supply control device of the present invention is installed.
FIG. 6 is a plan view showing a use state of the water supply control device of the present invention.
FIG. 7 is a longitudinal sectional view of a conventional water supply control device.
[Explanation of symbols]
4 Sanitary Washing Device 7, 38 Water Supply Control Device 40 Mounting Guide Tube 42 Drain Valve 43 Drain Valve Mounting Port 46 Lower Restrictor 47 Bottom Plate 48 Support Arm 49, 62 Valve Element 51 Upper Restrictor 52 Coil Spring 53 Water Discharge Hole 55 Flow Path 56 Closure Material 60 Sliding guide 61 Water discharge groove

Claims (4)

The valve cradle provided above the mounting guide tube in communication with the water source, is nono under diaphragm portion of the lower portion of the valve chamber to be formed inside the valve receiving base communicates with the mounting guide cylinder, diaphragm the lower A valve body forming a water discharge hole between the part is inserted into the valve chamber so as to be vertically movable,
A water drainage stopper having a flow passage communicating with a water supply source is detachably attached to the mounting guide tube,
At the bottom of the valve body, mounting the occluder to block the flow path in contact with the drain tap,
Wherein by removing from the drain tap mounting guide tube, draining mechanism of the water supply control apparatus being characterized in that the pre Ki吐 water hole or al the valve residual water chamber to discharge to the outside. The valve body includes a plurality of support arms bent upward from a peripheral edge of a circular bottom plate, and the valve body is housed in a valve chamber so that the support arms can move upward and downward. 2. The drainage mechanism for a water supply control device according to claim 1, wherein a water discharge hole for communicating the valve body and the valve chamber is formed between the support arms. The valve body accommodates a bottomed cylindrical sliding guide in a valve chamber so as to be vertically movable, and has a water discharge groove formed on an outer peripheral surface of the sliding guide for communicating the flow path with the valve chamber. The drainage mechanism of the water supply control device according to claim 1, wherein: The water drainage is provided with a flow path communicating with a water supply source by piercing the inside of the water drainage into a hollow shape, and normally forming a passage of washing water between a flow path tip and a closing material. 2. The drainage mechanism of a water supply control device according to claim 1, wherein the passage is closed, and a water discharge hole of the valve body is opened when the mounting guide tube is opened.

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