JP2009091891A - Flush tank device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flush tank device suppressing the generation of a swirling flow at a time when overflow water flows into an opening section at the upper end of an existing overflow pipe and being capable of smoothing the inflow of wash water by devising the opening section at the upper end of the overflow pipe by using the overflow pipe as it is. <P>SOLUTION: A plurality of flow-regulating blades 51 extended towards the inside-diameter direction are dispersed and fitted on the periphery of an opening section 44 at the upper end of the overflow pipe 40, and the flow-regulating blade 51 has a width longer than a blade thickness. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a washing water tank apparatus provided with an overflow pipe.

  Conventionally, in a washing water tank, when excessive washing water is inadvertently supplied into the washing water tank, an overflow pipe is installed to drain excess water from the drain valve to the toilet. ing. Such an overflow pipe has a base end communicating with a drain outlet, and a front end opening projecting into the tank space above a prescribed washing water level.

  In such a conventional overflow pipe, in addition to an overflow pipe having a vertically rising structure, various overflow pipes having a horizontal pulling structure have been proposed.

  For example, in Patent Document 1, an auxiliary water pipe used for storing water in a toilet bowl is disposed above an upper end opening of an overflow pipe having a vertical structure, and a fixture for the auxiliary water pipe is provided in a rising shape at the upper end opening. And the upper end opening part of this overflow pipe is opened as it is and the structure where overflow water flows in from the upper part is disclosed.

In this overflow pipe structure, when cleaning water is supplied from above the upper end opening of the overflow pipe, the upper cleaning water flows into the overflow pipe from the upper end opening and is discharged out of the tank from the drain outlet at the bottom of the tank. It is only a general overflow pipe structure that prevents washing water from overflowing from the water tank.
Japanese Utility Model Publication No. 4-70374

  However, in the structure of the upper end opening of the overflow pipe, there is a possibility that a swirling flow may be generated due to the state of water flowing into the upper end opening of the overflow pipe or the shape of the opening of the overflow pipe. The swirling flow generated at this time obstructs the inflow of water into the upper end opening of the overflow pipe and reduces the drainage capacity of the overflow pipe, so there is a possibility that the excessively supplied wash water overflows outside the tank. .

  Thus, in the overflow pipe structure of the cleaning water tank apparatus described in Patent Document 1, a swirling flow is generated when the cleaning water flows in the upper end opening regardless of the shape of the fixture. Inflow of water is stagnant. For this reason, an excessive amount of water in the washing water tank is not sufficiently drained from the overflow pipe, and there is a possibility of causing a water leakage accident in which water overflows from the toilet flushing water tank.

  In this case, it is conceivable to increase the drainage capacity of the overflow pipe by increasing the diameter of the overflow pipe. However, in this structure, there is a possibility that the structure of the entire washing water tank apparatus is enlarged. In recent years, there has been a demand for a water-saving toilet flushing water tank, and there is a risk of interfering with other devices in the toilet flushing water tank if a large-diameter overflow pipe is used in the trend of the miniaturized tank itself. Inevitably, an increase in the size of the washing water tank apparatus was inevitable.

  Therefore, the present invention uses the existing overflow pipe as it is, and devise the upper end opening to suppress the generation of swirling flow when the overflow flows into the upper end opening of the overflow pipe, thereby smoothly flowing the washing water. It is an object of the present invention to provide a washing water tank apparatus that can be used.

  In order to achieve the above-mentioned object, the invention according to claim 1 stores the wash water in the wash water tank and supplies the wash water to the toilet from the drain outlet provided at the bottom of the wash water tank by opening and closing the drain valve. And a flush water tank device configured to discharge overflow water from a predetermined water level of the flush water tank to a drain outlet by an overflow pipe installed in the flush water tank. A plurality of rectifying blades extending in the inner diameter direction are provided in the opening so as to be dispersed on the circumference, and the rectifying wings have a width longer than the blade thickness.

  According to a second aspect of the present invention, in the first aspect of the present invention, the rectifying blade extends from the outer peripheral wall of the overflow pipe toward the center of the upper end opening.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the rectifying blade is detachable from the overflow pipe.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein a part of the lower end surface of the rectifying blade is in contact with the peripheral end surface of the overflow pipe. It is configured to enable positioning.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the upper parts of a plurality of rectifying vanes arranged dispersed on the circumference are connected by an upper ring. It is characterized by that.

  According to a sixth aspect of the present invention, in the first aspect of the present invention, the upper portions of the plurality of rectifying blades distributed on the circumference are connected by a covering portion. The cover portion is provided with an attachment portion for attaching an auxiliary water pipe.

  The invention according to claim 7 is the invention according to claim 6, wherein the attachment portion discharges water from the water injection port connected to the auxiliary water pipe and water flowing from the water injection hole toward the overflow pipe. For example, a water outlet is formed, and the water outlet protrudes from the lower surface of the covering portion.

  The invention according to claim 8 is the invention according to claim 6 or claim 7, wherein the attachment portion includes a water inlet connected to the auxiliary water pipe, and water flowing from the water inlet to the overflow pipe. And a water outlet for discharging water toward the outlet, wherein the water outlet is located at the center of the upper end opening of the overflow pipe.

  The invention according to claim 9 is the invention according to any one of claims 1 to 8, wherein the rectifying blade is formed of the overflow pipe from the lower portion of the rectifying blade toward the upper portion of the rectifying blade. Inclined toward the center of the upper end opening.

  According to the first aspect of the present invention, a plurality of rectifying blades extending in the inner diameter direction are distributed on the circumference at the upper end opening of the overflow pipe, and the rectifying blades have a width longer than the blade thickness. As a result, even if the overflow water turns into a swirling flow at the time of inflow, it hits the rectifying blade whose width is longer than the blade thickness, so that it flows along the rectifying blade and is rectified by the rectifying blade to become a straight flow and eventually becomes the upper end of the overflow pipe It flows into the opening and can guide the overflow while rectifying the overflow toward the center of the upper end opening of the overflow pipe. Therefore, the generation of the swirling flow in the vicinity of the upper end opening of the overflow pipe can be reliably suppressed, and the generation of an air layer in the vicinity of the center of the swirling vortex can be prevented. In addition, there is an effect that the overflow water can be sufficiently discharged without increasing the diameter of the overflow pipe. Furthermore, it is possible to prevent the generation of swirling vortices generated at the upper end opening by simply changing the shape of the upper end opening without changing the configuration of the existing overflow pipe, and dramatically improve the drainage capacity of the overflow water by the overflow pipe. There is an effect that can.

  According to the second aspect of the present invention, since the rectifying blade is extended from the outside of the outer peripheral wall of the overflow pipe toward the center of the upper end opening, the overflow flowing into the upper end opening of the overflow pipe is minimized. The rectification can be performed at an early timing, and the effect of suppressing the swirling flow can be obtained, and the effect described in claim 1 can be achieved.

  According to the third aspect of the present invention, since the rectifying blade is detachable from the overflow pipe, the effect of the first aspect can be obtained only by being attached to the existing overflow pipe.

  According to the fourth aspect of the present invention, since a part of the lower end surface of the rectifying blade is in contact with the peripheral end surface of the overflow pipe, the rectifying wing can be positioned. When attaching to the upper end of the rectifier, the rectifier blade can be positioned simply by contacting a part of the lower end surface of the rectifier blade to the peripheral end surface of the overflow pipe, and there is no need to provide a separate positioning member or the like. This makes it possible to easily position and position the rectifying blades, thereby preventing an increase in manufacturing cost and improving workability.

  According to the invention of claim 5, since the upper parts of the plurality of rectifying blades dispersed and arranged on the circumference are connected by the upper ring, the position skeleton of the rectifying blades can be reliably configured, Moreover, since the rectifying blades are connected to each other, the strength of the rectifying blades can be secured, and even when the water flowing into the overflow pipe is strong, the shape of the rectifying blades can be prevented from being deformed. When installing the blade by fitting it into the upper end opening of the overflow pipe from above, the rectifier blades are firmly interconnected, so there is no eccentric load during installation and the inflow can be reliably installed. There is an effect that can prevent deformation and breakage due to the flowing water.

  According to the invention described in claim 6, since the upper part of the plurality of rectifying blades dispersed and arranged on the circumference is connected by the covering part, and the attachment part for attaching the auxiliary water pipe to the covering part is provided. Compared to a conventional auxiliary water pipe inserted into the overflow pipe, it is possible to secure a wider flow path of the overflow pipe, and to reliably exhibit the overflow capability.

  According to invention of Claim 7, the said attaching part forms the water inlet which connects with the said auxiliary water pipe, and the water outlet for discharging the water which flowed in from the said water inlet toward the said overflow pipe In addition, since the water discharge port protrudes from the lower surface of the covering portion, water supply from the auxiliary water pipe does not scatter outward from the upper end opening of the overflow pipe, and water is reliably supplied from the auxiliary water pipe into the overflow pipe. Can do.

  According to invention of Claim 8, the said attachment part forms the water injection opening connected with the said auxiliary water pipe, and the water discharge opening for discharging the water which flowed in from the said water injection opening toward the said overflow pipe. In addition, since the water outlet is located at the center of the upper end opening of the overflow pipe, the water supply from the auxiliary water pipe always goes to the center in the overflow pipe, so that water can be supplied more reliably. it can.

  According to the ninth aspect of the invention, since the rectifying blade is inclined toward the center of the upper end opening of the overflow pipe from the lower part of the rectifying blade toward the upper part of the rectifying blade, the portion where the rectifying blade is inclined Therefore, it becomes possible to prevent interference with parts arranged in the cleaning water tank.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a washing water tank apparatus having an overflow pipe structure to which the present invention is applied.

  As shown in FIG. 1, a flush water tank apparatus 1 according to this embodiment is mounted on a toilet (not shown) and supplies flush water to the toilet. The size of the toilet bowl of the toilet and the toilet bowl It is configured so that the amount of drainage from the wash water tank can be adjusted according to the type. For example, the amount of drainage can be adjusted to switch between a small amount of water (for example, 6 L) and a large amount of water (for example, 8 L). The washing water tank device 1 is stored in the washing water tank 2 for storing washing water to be supplied to the toilet, the water supply device 3 for supplying and storing water in the washing water tank 2, and the washing water tank 2. And a drainage device 4 for supplying and draining water to the toilet.

  The wash water tank 2 is formed in a thin box-shaped square shape, stores water supplied from a water supply source, and drains the stored water as wash water from a drain port 31 provided in the bottom 10 to the toilet.

  The water supply device 3 is erected on the bottom 10 on the left side in the wash water tank 2 and switches between a water supply pipe 20 having a lower end connected to a water supply source, and water discharge and water stoppage from the water supply pipe 20 into the wash water tank 2. Accordingly, a water supply valve 21 provided at the upper end of the water supply pipe 20 and a float unit 22 that performs a switching operation of water discharge and water stoppage of the water supply valve 21 by using fluctuations in buoyancy caused by vertical movement of the water level in the wash water tank 2. Have. Reference numeral 24 denotes an adjustment shaft 24 screwed into the float portion 22, and reference numeral 25 denotes a positioning guide portion 25 that determines the position while guiding the vertical movement of the float portion 22. Reference numeral 27 denotes a drain outlet 27 that directly discharges water into the wash water tank 2.

  The positioning guide portion 25 is adapted to be fitted to a rib 26 that is linearly disposed on the outer peripheral surface of the water supply pipe 20 along the extending direction of the water supply pipe 20.

  The ribs 26 are formed by projecting a plurality of strips radially on the outer peripheral surface of the water supply pipe 20. Thereby, the positioning guide part 25 is positioned and fixed in multiple stages in the extending direction.

  The water supply pipe 20 is formed in a substantially cylindrical shape, is connected to a water supply source, and is configured to supply water to the water supply valve 21 at the upper end by water pressure from the water supply source. A stopper, or a pipe or a connecting pipe connected to these is designated.

  The water supply valve 21 is interlocked and connected to the float part 22 via a lever lever (not shown), and a diaphragm type valve (see FIG. 5) of the water supply valve 21 according to the vertical movement of the float part 22 due to the fluctuation of the water level. (Not shown) can be opened and closed, and water can be discharged or water can be stopped through a back pressure relief hole that leads to the back pressure chamber.

  Specifically, when the water level in the wash water tank 2 is lowered, the float unit 22 is lowered, the lever lever is opened to open the water supply valve 21, the water supply to the wash water tank 2 is started, and the other water supply When the water level in the tank rises in accordance with this, the float portion 22 rises and the lever lever is closed to close the water supply valve 21.

  By the operation of the water supply valve 21, the cleaning water is discharged into the cleaning water tank 2 from the downward water discharge pipe 23 connected to the lower side of the water supply valve 21 or stopped. Such a water discharge and water stop action maintains the water level when the wash water tank 2 is full.

  As shown in FIG. 1, the drainage device 4 is connected to the operation lever device 6 provided on the outer surface of the cleaning water tank 2 and the base of the operation lever device 6 in the cleaning water tank 2 in a substantially horizontal direction. The rotary shaft 7 has a drain valve 32 that is connected to the rotary shaft 7 via a ball chain 30 and opens and closes the drain port 31. The rotary shaft 7 is rotated by the lever operation of the operation lever device 6, and the ball chain 30. The drain valve 32 connected through the valve is opened.

  The operation lever device 6 is rotatably supported on the side wall of the cleaning water tank 2 via a predetermined fixture, and the drain valve 32 is opened via the rotation shaft 7 by the rotation of the operation lever 8 by the user. Operate. Reference numeral 9 denotes an operation lever adjusting unit 9 having a damper function for generating a resistance force when the operation lever 8 returns to the original position.

  Further, a ball chain 30 as a string-like pulling member that is connected to the upper surface of the drain valve 32 from the tip of the rotating shaft 7 is suspended, and a drain valve 32 is suspended at the lower end of the ball chain 30. Is locked.

  The drain valve 32 is formed in a substantially disk shape with an elastic material such as a synthetic resin, and has a valve body 33 having a concave portion formed in a reverse opening shape with a lower opening at a substantially center, and an outer peripheral edge of the valve body 33. And an outer edge seal portion 34 having a sealing surface that is seated on the drain port 31, and a valve support arm 35 is provided laterally on the side of the valve body 33. The end is pivotally attached to the outer peripheral wall 42 of the L-shaped overflow pipe 40 communicating with the drain port 31. Accordingly, the drain valve 32 opens and closes the drain port 31 while rotating through the valve support arm 35 by the tension and relaxation of the ball chain 30 by the operation of the operation lever 8. Reference numeral 41 denotes a pivot formed on the outer peripheral wall 42 of the overflow pipe 40, and 36 denotes a pivot mounting hole at the base end of the valve support arm 35 that is pivotally attached to the pivot 41.

  The drain port 31 is provided at the substantially central bottom of the cleaning water tank 2, and a drain guide tube 37 is fitted on the inner peripheral wall surface of the drain port 31, and the drain guide tube 37 is connected to the cleaning water tank 2. It extends to the upper part of the bottom, and is configured so that the closed state of the drain port 31 is maintained by seating the sealing surface of the drain valve 32 on the opening edge of the upper end.

  The overflow pipe 40 is erected in an L shape with the base end communicating with the drain port 31. The upper end opening 44 of the overflow pipe 40 protrudes above the water level when the cleaning water in the cleaning water tank 2 is full. The overflow pipe 40 causes the overflow water to flow from the upper end opening 44 when excessive cleaning water is supplied into the cleaning water tank 2, that is, when cleaning water is supplied in excess of the water level when full. As a result, it flows down toward the drain port 31 below the overflow pipe 40 and drains from the drain port 31 to the toilet.

  The upper end opening 44 of the overflow pipe 40 is equipped with a rectifier 50 in order to prevent a swirling swirl from occurring in the overflow water flowing from the opening. Here, the first rectifier used in the overflow pipe structure in the washing water tank apparatus of the present invention will be described in detail with reference to FIGS. 2 and 3. FIG. 2 is a perspective view showing a main part of the cleaning water tank apparatus. 3A and 3B show the configuration of the first rectifier, where FIG. 3A is a perspective view and FIG. 3B is a plan view.

  As shown in FIGS. 2 and 3, the first rectifying device 50 is configured by integrally interposing a plurality of rectifying blades 51 between an upper ring body 52 and a lower ring body 53.

  The upper ring body 52 is formed in a flat ring shape, and the lower ring body 53 is formed in a short cylindrical shape that can be fitted to the outer peripheral wall 42 of the overflow pipe 40, and a flat plate-shaped rectifying blade 51 therebetween. Are distributed on the circumference and the required number is interposed. That is, the rectifying blade 51 has a configuration in which a plate-like blade extending in the vertical direction is extended in the inner diameter direction from the position of the outer peripheral wall 42 of the overflow pipe 40. In addition, the rectifying blade 51 is configured to extend from the plate-like blade thickness w2 toward the inner diameter direction so that the width w1 becomes longer.

  In the present embodiment, four rectifying blades 51 are arranged in a circumferential state at a certain angle in the circumferential direction, for example, every 90 °, and are integrated between the upper ring body 52 and the lower ring body 53. In order to interpose, the lower end surface 57 of the rectifying blade 51 is configured to protrude from the upper peripheral end surface 47 of the short cylindrical lower ring 53 in an overhang shape inwardly. With this configuration, when the short cylindrical lower ring 53 of the first rectifying device 50 is attached to the upper outer peripheral wall 42a of the overflow pipe 40 in the fitted state, the upper end opening 44 of the overflow pipe 40 is provided. The upper peripheral end surface 47 is in contact with the overhang portion of the lower end surface 57 of the rectifying blade 51 so that the positioning when the rectifying blade 51 is mounted can be easily performed.

  The arrangement of the plurality of rectifying blades 51 in a circumferential state means that the plate-like rectifying blades 51 are erected at regular intervals from the outer periphery toward the inner side at the circumferential position of the cylindrical overflow pipe 40. However, the rectifying blades 51 are not necessarily provided at regular intervals, and may be dispersed in the circumferential direction.

  As described above, the first rectifying device 50 has a structure in which the upper ring 52 and the plurality of rectifying blades 51 arranged in a circumferential state and the lower ring 53 are integrally connected. Since the skeleton can be reliably configured and the rectifying blades 51 are connected to each other by the upper ring body 52, the strength of the rectifying blades 51 can be ensured and the water flowing into the overflow pipe 40 is strong. Even in this case, deformation of the rectifying blade 51 can be prevented. Further, when the rectifier 50 is fitted and installed from above the overflow pipe 40 via the short cylindrical lower ring 53, the rectifying blades 51 are interconnected by the upper and lower rings 52, 53. Therefore, deformation and breakage of the rectifying blade 51 due to the eccentric load at the time of mounting can be prevented.

  The short cylinder-shaped lower ring body 53 is configured in such a shape that the inner peripheral wall of the short cylinder can be press-fitted to the upper outer peripheral wall 42 a of the overflow pipe 40. The inner peripheral wall 71 of the short cylinder is provided with a plurality of columnar ribs 70 that can be attached to and detached from the upper outer peripheral wall 42a of the overflow pipe 40. When fitted to the upper outer peripheral wall 42a of the overflow pipe 40, the rib 70 is pressed against the peripheral surface of the upper outer peripheral wall 42a of the overflow pipe 40 so that the rectifier 50 does not rotate. Therefore, when the cleaning water flows into the upper end opening 44 of the overflow pipe 40, it is possible to prevent the water flow from colliding with the rectifying blade 51 and the rectifier 50 from rotating and sliding on the upper part of the overflow pipe 40.

  As described above, in the first rectifying device 50, the overhang shape is formed on the lower end surface 57 of the rectifying blade 51, and the vertical ribs 70 are protruded from the surface of the inner peripheral wall 71 having a short cylindrical shape. As a result, the following effects are produced. That is, when the rectifier 50 is mounted on the upper peripheral end surface 47 of the overflow pipe 40, the overhanging lower end surface 57 of the rectifying blade 51 abuts on the upper peripheral end face 47 of the overflow pipe 40. Since the rectifying blade 51 can be positioned when the rectifying device 50 is mounted from above, it is not necessary to change the configuration of the existing overflow pipe, such as providing a separate positioning member, and the rectifying blade 51 can be configured with a simple configuration. Positioning with respect to the overflow pipe 40 can be performed, an increase in manufacturing cost can be prevented, and workability can also be improved.

  Furthermore, since the rectifier 50 has a plurality of ribs 70 projecting from the upper portion of the overflow pipe 40, when the overflow water rises from a predetermined water level in the washing water tank 2 and flows into the overflow pipe 40, it collides with the rectifying blade 51. The rectifier 50 itself does not rotate and slide on the outer peripheral wall 42 surface of the overflow pipe 40 due to the flow pressure, so that the swirling flow in the upper end opening 44 of the overflow pipe 40 can always be suppressed and high drainage performance can be exhibited. it can.

  When the rectifier 50 is mounted on the overflow pipe 40, the lower end surface 57 of the rectifying blade 51 overhangs from the short cylindrical lower ring 53 to perform the positioning function. The upper end surface 58 of the body 53 has the same height as the upper peripheral end surface 47 of the existing overflow pipe 40. Therefore, when the cleaning water rises above the predetermined water level in the cleaning water tank 2, the upper end surface 58 is located above the lower ring 53. It flows into the upper end opening 44 of the overflow pipe 40 from between the rectifying blades 51 in the circumferential state, and the discharge timing of the overflow water by the overflow pipe 40 can be made the same as the existing overflow pipe. The drainage capacity per unit time can be further improved while suppressing the inflow swirling flow that occurs in the upper end opening 44 of the 40. .

  Here, with reference to FIG.4 and FIG.5, the comparative example of the generation | occurrence | production state of the swirl | vortex flow of the existing overflow pipe | tube and the overflow pipe | tube with which the rectifier of this invention was mounted is shown. FIG. 4 is a plan view illustrating a state in which overflow flows into an existing overflow pipe. FIG. 5 is a plan view showing a state in which overflow flows into an overflow pipe equipped with a rectifier.

  As shown in FIG. 4, when overflow water flows into the existing overflow pipe 40, the overflow water f <b> 1 flows into the upper end opening 44 of the overflow pipe 40 while forming a swirling flow. The overflow f1 that forms this swirling flow is in a vortex state toward the center 44a of the upper end opening 44 of the overflow pipe 40. Since the vicinity of the center 44a of the upper end opening 44 is the center of the spiral, an inverted conical air layer 48 is formed, and no overflow flows into the blank portion. The drainage capacity per unit time of 40 is significantly reduced. The swirling direction of the swirling flow is a right swirl or a left swirl depending on various conditions such as the direction of the overflow that first flows into the upper end opening 44 of the overflow pipe 40 and the shape of the overflow pipe 40. This swirling flow of the spiral reduces the drainage capacity of the overflow pipe 40 regardless of the spiral direction.

  As shown in FIG. 5, when the first rectifying device 50 of the present invention is used, when the overflow flows into the overflow pipe 40 fitted with the rectifying device 50, the outer peripheral wall of the overflow pipe 40. A plurality of rectifying blades 51 extending from the outside of 42 toward the center 44a of the upper end opening 44 guide the overflow f2 while rectifying the overflow f2 toward the center 44a of the upper end opening 44 of the overflow pipe 40. Generation of a swirling flow in the vicinity of the upper end opening 44 is reliably suppressed.

  That is, even if the overflow f2 becomes a swirling flow when it flows in, it hits the plate-shaped surface of the rectifying blade 51 and flows as it is along the plate-shaped surface of the rectifying blade 51. Thus, it flows into the upper end opening 44 of the overflow pipe 40 and can fulfill the above-described function.

  In addition, since it is possible to prevent the generation of an air layer near the center of the swirling flow that has been generated conventionally, the effective channel area of the overflow can be reliably ensured. As described above, the drainage capacity of the overflow water flowing into the upper end opening 44 of the overflow pipe 40 can be dramatically improved only by mounting the rectifier 50 of the present invention on the existing overflow pipe. For example, when the rectifier 50 is attached to the overflow pipe 40 capable of draining 23 liters per minute, 25 liters can be drained per minute, and the drainage capacity per unit time can be improved.

  Next, the 2nd rectifier and the 3rd rectifier which are modifications of the rectifier concerning this embodiment are explained, referring to Drawing 6 and Drawing 7.

  The second rectifying device 80 shown in FIG. 6 is the same as the rectifying device 50 described above in that a plurality of rectifying blades 81 are interposed between the upper ring body 52 and the lower ring body 53.

  However, here, in particular, the width w3 of the rectifying blade 81, that is, the length w4 of the plate-like rectifying blade 81 extending in the inner diameter direction from the outer diameter side of the short cylindrical lower ring 53 is defined as the outer shape of the lower ring 53. It extends in the opposite direction, and has a shape protruding from the outer peripheral edges 59 and 63 of the upper ring body 52 and the lower ring body 53 by the length w5.

  According to the rectifier 80 having such a configuration, the rectifying blade 81 is provided to extend further outward from the outer peripheral edge 59 of the lower ring 53 and the outer peripheral edge 63 of the upper ring 52, so that the upper end of the overflow pipe 40 is Overflowing water flowing into the opening 44 can be rectified at the earliest possible timing, and the swirling flow can be more strongly suppressed to exhibit high drainage capacity.

  Next, the third rectifying device 90 shown in FIG. 7 has a structure in which a rectifying blade 91 is interposed between an upper ring body 92 and a lower ring body 93 as in FIG. The ring body 92 has an enlarged outer periphery and is formed in a large diameter, and the lower ring body 93 has a flange 98 projecting from the upper peripheral surface of a short cylinder, and this flange The outer diameter of 98 and the outer diameter of the upper ring body 92 are substantially the same diameter, and a vertical plate-shaped rectifying blade 91 is provided between the large-diameter upper ring body 92 and the flange portion 98 of the lower ring body 93. It is installed.

  In addition, the vertical plate-shaped rectifying blade 91 is formed in a substantially U-shaped cross section by slightly bending the midway portion 99 near the outer edge so as to face the swirling direction of the washing water. That is, it is bent so as to face the swirling direction of the washing water. With this configuration, when the swirling water flow collides with the rectifying blade 91 at the start time of the swirling flow, the inner surface of the rectifying wing 91 is substantially letter-shaped. The water flow is diminished by wrapping around from the outside along the line, and at the same time, the overflow flows into the upper end opening 44 of the overflow pipe 40 without swirling along the straight surface toward the center of the rectifying blade 91.

  According to the rectifying device 90 having such a configuration, the rectifying blade 91 extended to the upper end opening 44 of the overflow pipe is slightly bent so that the midway part 99 near the outer edge of the flange part 98 faces the swirling direction of the washing water. Since the surface is formed in a substantially square shape, it can be quickly collected and rectified by the substantially square-shaped rectifying blade 91, and the swirling flow can be suppressed more strongly and high drainage ability can be exhibited.

[Other Embodiments]
Next, as another embodiment, the upper portions of the plurality of rectifying blades dispersed and arranged on the circumference are connected by a plate-shaped covering portion instead of the ring-shaped upper ring body, and this covering portion is connected to the upper portion. A rectifier having a configuration in which a mounting portion for attaching an auxiliary water pipe is provided will be described. 8 to 10 and 12 are explanatory diagrams of the fourth to seventh rectifiers, and FIG. 11 is an explanatory diagram of the washing water tank apparatus including the overflow pipe equipped with the rectifier.

  The fourth rectifying device 100 shown in FIG. 8 has a configuration in which one rectifying blade 51 is removed from the first rectifying device 50, and includes three flat rectifying blades 51. That is, the two rectifying blades 51 and 51 are provided in the diameter direction, and the rectifying blade 51 is provided in a direction perpendicular to the diametric direction. The upper portions of the three rectifying blades 51 are connected not by a ring but by a substantially semicircular disk-shaped covering portion 102.

  Further, the substantially semicircular covering portion 102 has a shape in which a semicircular protruding portion 102b is provided in the vicinity of the center of the string, and an L-shaped attachment for attaching the auxiliary water pipe 28 (see FIG. 11) to the protruding portion 102b. A mounting portion 103 is provided. That is, the attachment portion 103 is located on the center (center 44a in the drawing) of the upper end opening of the overflow pipe 140. In addition, the height of each rectifying blade 51 is set to a height that does not allow the washing water in the tank to flow back to the auxiliary water pipe 28 via the attachment portion 103, and therefore the lower ring 53 attached to the upper end of the overflow pipe 140. A wash water backflow prevention space is formed between the cover 102 and the cover 102.

  The attachment portion 103 is formed with a water inlet 104 provided continuously with the auxiliary water pipe 28 and a water outlet 105 for discharging water toward the center of the overflow pipe 140. The water outlet 105 is formed on the lower surface of the covering portion 102. It is formed at the tip of a ring-shaped rectifying protrusion 106 that slightly protrudes from 102a.

  The lower ring 53 is provided with engaging portions 107 and 107 that engage with ring-shaped convex portions 143 and 143 formed in two upper and lower stages on the upper outer peripheral wall 142a of the overflow pipe 140. The rectifying device 100 is prevented from dropping from the overflow pipe 140 by engaging the engaging portion 107 with the lower convex portion 143 while the recess portion 107a inside the engaging portion 107 is in contact with the portion 143.

  According to the fourth rectifier 100 having such a configuration, the same effect as that of the above-described embodiment is achieved, and the water outlet 105 of the attachment portion 103 is located at the center of the upper end opening 44 of the overflow pipe 140. Water can always be reliably supplied from the auxiliary water pipe 28 toward the center 44 a in the overflow pipe 140.

  Then, three rectifying blades 51 are provided on the half circumference so as to ensure an interference avoidance space over a half circumference with respect to the upper end opening 44 of the overflow pipe 140, and the upper portions of the rectifying wings 51 are also provided. Are connected by a substantially semicircular covering portion 102, for example, even if the upper connecting portion 7a in the washing water tank 2 that is connected to the operating lever 8 and operates the ball chain 30 is movable, Since it does not contact the rectifying blades 51 and the covering portion 102 of the apparatus 100, there is an effect that it can be used without changing the design of the washing water tank apparatus.

  Next, the fifth rectifying device 110 shown in FIG. 9 is provided with two rectifying blades 111, 111 in the diameter direction on the circumference, like the above-described fourth rectifying device 100, and a direction perpendicular to the diameter direction. Further, the rectifying blades 111 are further provided, and the upper portions of the three rectifying blades 111 are connected by a semicircular plate-shaped covering portion 112.

  In particular, each rectifying blade 111 formed in a plate shape has a lower portion of the rectifying blade 111 formed wider than an upper portion. That is, the lower part of the rectifying blade 111 extends from the outer peripheral surface of the short cylindrical lower ring 53 by a length w4 in the radial inner direction, and conversely by the length w5 by extending in the radial outer direction. The width w3 is wider than the upper side. That is, the lower portion of the rectifying blade 111 is projected outwardly by the length w5 from the outer peripheral edges 59 and 63 of the covering portion 112 and the lower ring 53.

  An L-shaped attachment portion 103 for attaching the auxiliary water pipe 28 is provided at substantially the center of the covering portion 112 formed in a plate-like semicircular shape. Since the covering portion 112 is formed in a semicircular shape, the attachment portion 103 is eccentric with respect to the center 44 a of the overflow pipe 140.

  Also, here, the same engaging portions 107 and 107 as the fourth rectifying device 100 (see FIG. 8) are provided so that the rectifying device 110 does not fall off the overflow pipe 140.

  According to the fifth rectifying device 110 having such a configuration, the same effect as that of the above-described embodiment can be obtained, and the rectifying blade 111 is further extended outward from the outer peripheral edge 59 of the lower annular body 53. Further, the overflow water flowing into the upper end opening 44 of the overflow pipe 140 can be rectified at the earliest possible timing, and the swirling flow can be suppressed more strongly and a high drainage capacity can be exhibited.

Next, the sixth straightening device 120 shown in FIG. 10 has the basic structure in which the straightening blade 121 is interposed between the covering portion 122 formed in a semicircular shape and the lower ring body 125. Although it is the same as the apparatus 110, the coating | coated part 122 here reduces the outer periphery compared with the lower ring body 125, and is formed in the small diameter. That is, like the fourth and fifth rectifiers 100 and 110 shown in FIGS. 8 and 9, two rectifying blades 121 and 121 are provided in the diameter direction, and the rectifying blades are perpendicular to the diameter direction. However, unlike the configurations described so far, these rectifying blades 121, 121, 121 are configured to stand slightly inclined.
Further, the lower ring body 125 has a flange portion 128 formed on the upper peripheral surface of the short cylindrical body so as to protrude outward, and on the periphery of the flange portion 128, Three rectifying blades 121, 121, 121 having a width substantially equal to the width are provided. Therefore, the overflow water flowing into the upper end opening 44 of the overflow pipe 140 can be rectified at a relatively early timing, and the swirling flow can be suppressed to exhibit a high drainage capacity.

  Then, the upper ends of the three rectifying blades 121, 121, 121 are connected to the covering portion 122 having a diameter smaller than that of the lower ring body 125, so as to be inclined toward the center of the upper end opening 44 of the overflow pipe 140. In addition to the interference avoidance space formed over the half circumference of the rectifier 120, the rectifier blade 121 itself can avoid interference with other components in the tank as much as possible. ing.

  An L-shaped attachment portion 123 is provided at substantially the center of the covering portion 122 formed in a plate-like semicircular shape. Since the covering portion 122 is formed in a semicircular shape, the attachment portion 123 is eccentric with respect to the center 44 a of the overflow pipe 140. The attachment portion 123 is formed with a water injection port 104 connected to the auxiliary water tube 28 and a water discharge port 105 for discharging water toward the center of the overflow tube 140. The water discharge port 105 is formed from the lower surface 102 a of the covering portion 122. It is formed at the tip of a ring-shaped straightening protrusion 106 that slightly protrudes.

  The lower annular body 125 is provided with an engaging portion 127 that engages with ring-shaped convex portions 143 and 143 formed in two upper and lower stages on the upper outer peripheral wall 142a of the overflow tube 140. The rectifying device 120 is prevented from falling off the overflow pipe 140 by engaging the engaging portion 127 with the convex portion 143 on the lower side while the recess portion 127 a inside the engaging portion 127 is in contact with the portion 143.

  According to the sixth rectifying device 120 having such a configuration, the same effect as that of the above-described embodiment can be obtained. Can be quickly collected and rectified, and the swirling flow can be suppressed more strongly and high drainage capacity can be exhibited.

  Each rectifying blade 121 is configured such that the rectifying blade 121 is inclined from the lower portion of the rectifying blade 121 toward the upper portion of the rectifying blade 121 toward the center of the upper end opening 44 of the overflow pipe 140. Therefore, the strength of the skeleton of the rectifying blade 121 can be improved, and long-term reliability can be obtained.

  And the upper part of the three rectifying blades 121 is connected by a semicircular covering portion 122 so as to be distributed on the circumference, and the interference avoidance space is ensured similarly to the fourth and fifth rectifying devices 100 and 110. Therefore, as shown in FIG. 11, a connecting portion 7 a is provided above the washing water tank 2 so as to be connected to the operating lever 8 and operate the ball chain 30. Even if the part 7a is movable, the rectifying blade 120 of the rectifying device 120 is not in contact with the rectifying device 120. Therefore, the cleaning water tank device 1 can be used without changing the design.

Next, the seventh rectifier 130 shown in FIG. 12 has the same basic structure as that of the rectifier described so far, with the rectifier blade 121 interposed between the covering portion 132 and the lower ring body 135. is there.
However, the covering portion 132 here is circular rather than semicircular, and is smaller in diameter (for example, about 2/3) than the lower rectifier 135 than the sixth rectifier 120 described above. ing. Then, like the sixth rectifying device 120, the lower ring 135 is provided with a flange portion 138, and four rectifying blades 121 are provided on the periphery of the flange portion 138 at a predetermined interval. Yes. The upper portions of the four rectifying blades 121, 121, 121, 121 are connected by a circular covering portion 132.

  As described above, since the outer periphery of the covering portion 132 is formed to be extremely small compared to the lower ring body 135, the degree of inclination of each rectifying blade 121 is increased, and accordingly, the lower ring body 135 and the covering portion 132 are separated from each other. Interference avoidance space can be secured in between, and even with the configuration in which the rectifying blade 121 is erected over the entire circumference of the lower ring body 135, interference with other components in the tank is made possible as much as possible. It can be avoided.

  Each rectifying blade 121 is configured such that the rectifying blade 121 is inclined from the lower portion of the rectifying blade 121 toward the upper portion of the rectifying blade 121 toward the center of the upper end opening 44 of the overflow pipe 140. Therefore, the strength of the skeleton of the rectifying blade 121 can be improved, and long-term reliability can be obtained.

  Also in the seventh rectifier 130, the lower ring 135 is provided with engaging portions 137 and 137 that engage with the convex portion 183 formed on the upper outer peripheral wall 182a of the overflow pipe 180, and the upper side Since the engaging portions 137 and 137 are engaged with the convex portion 183 from the side, the rectifier 130 is prevented from dropping from the overflow pipe 180.

  Further, since the water discharge port 105 of the attachment portion 123 is located at the center of the upper end opening 44 of the overflow pipe 170, water can be reliably supplied from the auxiliary water pipe 28 toward the center in the overflow pipe 170 at all times.

  As described above, according to the fourth to seventh rectifiers described in the present embodiment, since the attachment portion for attaching the auxiliary water pipe is provided in the covering portion, the conventional auxiliary water pipe is provided by being inserted into the overflow pipe. It is possible to secure a wide flow path of the overflow pipe as compared with the above.

  Further, since the water outlet of the mounting portion is opened at the tip of the ring-shaped rectifying protrusion protruding from the lower surface of the covering portion, the water supply from the auxiliary water pipe is outside the upper opening of the overflow pipe. Therefore, water can be reliably supplied from the auxiliary water pipe into the overflow pipe.

  Furthermore, by providing a washing water backflow prevention space between the lower ring body and the covering portion, the washing water in the tank can be prevented from backflowing to the auxiliary water pipe via the attachment portion.

  Note that the water supplied from the auxiliary water pipe 28 to the overflow pipe is stored water in the toilet bowl.

  By the way, the rectifier which has been described so far can use an adapter according to the diameter of the overflow pipe in order to provide versatility. For example, taking the seventh rectifier 130 as an example, as shown in FIG. 13, when the diameter of the overflow pipe is small, an adapter pipe 160 having a flow pipe connecting portion corresponding to the overflow pipe having a small diameter is attached. By doing so, the same seventh rectifier 130 can be used. That is, the flow pipe connecting portion of the adapter pipe 160 is inserted into the upper outer peripheral wall 172 a of the overflow pipe 170 having a different diameter, and the rectifier 130 is mounted on the upper side of the adapter pipe 160.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to each embodiment mentioned above, In the range of the summary of this invention described in the claim, various deformation | transformation are carried out.・ Change is possible.

It is a block diagram which shows the washing water tank apparatus which comprised the overflow pipe | tube structure which concerns on this embodiment. It is the perspective view which showed the principal part of FIG. It is the block diagram which showed the 1st rectifier of the principal part of FIG. It is a top view which shows the drainage state of the conventional overflow pipe. It is a top view which shows the waste_water | drain state at the time of using a rectifier for the overflow pipe | tube structure which concerns on this embodiment. It is a block diagram which shows embodiment of the 2nd rectifier. It is a block diagram which shows embodiment of the 3rd rectifier. It is a block diagram which shows embodiment of the 4th rectifier. It is a block diagram which shows embodiment of the 5th rectifier. It is a block diagram which shows embodiment of the 6th rectifier. It is a block diagram which shows the washing water tank apparatus provided with the overflow pipe | tube equipped with the 6th rectifier concerning this embodiment. It is a block diagram which shows embodiment of the 7th rectifier. It is a block diagram which shows embodiment of the 7th rectifier.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Washing water tank apparatus 2 Washing water tank 3 Water supply apparatus 4 Drainage apparatus 5 Tank upper cover 6 Operation lever apparatus 7 Rotating shaft 8 Operation lever 9 Operation lever adjustment part 10 Bottom part 40,140,170,180 Overflow pipe 44 Upper end opening part 48 Air Layer 50, 80, 90, 100, 110, 120, 130 Rectifier 51, 81, 91, 121 Rectifier blade 52, 92 Upper ring 102, 112, 122, 132 Cover 53, 93, 125, 135 Lower ring 55 Upper part 56 Lower part 57 Lower end surface 70 Rib 103 Attachment part 104 Water inlet 105 Water outlet 106 Rectification projection part 160 Adapter pipe

Claims (9)

The wash water is stored in the wash water tank, and the wash water is supplied to the toilet from the drain port provided at the bottom of the wash water tank by opening and closing the drain valve, and the overflow installed in the wash water tank In the washing water tank apparatus configured to discharge the overflow from the predetermined water level of the washing water tank to the drain outlet by a pipe,
In the upper end opening of the overflow pipe, a plurality of rectifying blades extending in the inner diameter direction are provided dispersed on the circumference,
The rectifying blade has a width longer than the blade thickness. The flush water tank apparatus according to claim 1, wherein the rectifying blade extends from the outer peripheral wall of the overflow pipe toward the center of the upper end opening. The washing water tank apparatus according to claim 1 or 2, wherein the rectifying blade is detachable from the overflow pipe. 4. The structure according to claim 1, wherein a part of a lower end surface of the rectifying blade is in contact with a peripheral end surface of the overflow pipe so that the rectifying blade can be positioned. The washing water tank apparatus according to the item. The washing water tank apparatus according to any one of claims 1 to 4, wherein upper portions of the plurality of rectifying blades arranged in a distributed manner are connected by an upper ring. The upper part of the said several rectification | straightening wing | distribution arrange | positioned disperse | distributed on the periphery was connected by the coating | coated part, and the attaching part which attaches an auxiliary water pipe to the said coating | coated part was provided. The washing water tank apparatus of any one of Claims. The attachment portion is formed with a water inlet connected to the auxiliary water pipe, and a water outlet for discharging water flowing from the water inlet toward the overflow pipe, and the water outlet is formed on the covering portion. The washing water tank apparatus according to claim 6, wherein the washing water tank apparatus protrudes from a lower surface. The attachment portion is formed with a water inlet connected to the auxiliary water pipe, and a water outlet for discharging water flowing from the water inlet toward the overflow pipe, and the water outlet is the overflow. The cleaning water tank apparatus according to claim 6 or 7, wherein the cleaning water tank apparatus is located at a center of an upper end opening of the pipe. The rectifying blade is inclined toward the center of the upper end opening of the overflow pipe from the lower portion of the rectifying blade toward the upper portion of the rectifying blade. The washing water tank apparatus described in 1.

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