JP2009243239A - Drain valve apparatus, and toilet bowl flushing tank apparatus mounted with the drain valve apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain valve apparatus capable of discharging a fixed quantity of flushing water without dispersion in the discharge quantity of flushing water by causing no change in the opening/closing speed of a flapper valve besides preventing erroneous mounting of a nonconforming flapper valve. <P>SOLUTION: The drain valve apparatus 30 disposed at a flushing water tank 10 storing toilet bowl flushing water is provided with a pair of horizontally projecting pivots 39 and a drain valve body part 30a or the like having a drain valve seat 37a. The drain valve body part 30a is provided with a projecting part 39a regulating an engaging range of the flapper valve 34 with the pivot 39. The projecting part 39a is formed to abut on an engaging part 53 of the flapper valve 34 at least when the flapper valve 34 closes a drain passage 37b and not to abut on the engaging part 53 of the flapper valve 34 when the flapper valve 34 is lifted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drain valve device and a toilet cleaning tank device equipped with the drain valve device. In particular, it relates to regulating the engagement range of the flapper valve in the drain valve device.

  Conventionally, a flapper valve that opens and closes a drain outlet that discharges wash water in a wash water tank that stores wash water for washing toilet bowls is exposed to water and water pressure when used for a long period of time. Or wear due to repeated opening and closing operations.

  For this reason, the deteriorated flapper valve cannot be maintained in watertightness due to deformation or pinhole formation, which may cause water leakage. Therefore, the deteriorated flapper valve is replaced and replaced with a new flapper valve.

  Usually, a flapper valve is a drain valve device disposed at a drain port of a wash water tank for storing wash water for washing a toilet bowl. Since it is engaged and supported by the support shaft protruding from the seat, when replacing the flapper valve, the deteriorated flapper valve engagement portion is removed from the aforementioned support shaft, and the new flapper valve engagement portion is removed. Is attached to the above-mentioned support shaft.

  During the replacement work, a standard flapper valve need only be installed properly, but the support shaft protruding from the lower side surface of the overflow pipe or the side surface of the drainage valve seat has a prescribed flapper valve. Since there is no means for regulating the engagement range (see, for example, Patent Document 1), a non-conforming product flapper valve may be erroneously attached.

  Therefore, in order to eliminate the attachment of the non-conforming product flapper valve, in the above-mentioned support shaft that engages and supports the flapper valve, the protruding portion extends over the periphery of the base end portion of the support shaft, that is, the end portion of the support shaft on the overflow pipe side. A support shaft with a shaft has been developed.

In other words, the protrusion provided over the periphery of the base end of the support shaft interferes with the engaging portion of the non-conforming product flapper valve, so that the non-conforming product flapper valve may be incorrectly attached to the support shaft. Absent.
JP-A-9-291580

  However, in the drain valve device disposed in the wash water tank for storing the wash water for washing the toilet bowl, the drain valve device is protruded from the lower part of the overflow pipe or the drain valve seat which is a component of the drain valve device. A conventional spindle for attaching a flapper valve has the following problems.

  In other words, a standard flapper valve is attached to the support shaft provided with a protrusion for removing the non-conforming flapper valve over the periphery of the base end of the pair of support shafts that engage and support the flapper valve as described above. When the attached flapper valve is swung left and right obliquely up and down to open and close the flapper valve, the engaging part on the opposite side to the pulling direction and the projection contact and interfere with each other, thereby increasing the flapper valve opening and closing speed. There was a drawback that the amount of washing water discharged varied.

  Therefore, the present invention is a drain valve device disposed in a wash water tank for storing wash water for washing toilet bowls, and is provided with a pair of horizontally projecting support shafts at the bottom of the wash water tank. A drain valve main body portion having a drain valve seat attached to the formed drain port to form a drain path to the toilet, and a pair of engaging portions that engage with the support shaft so as to be swingable up and down, A flapper valve that opens and closes the drainage path by being separated from and contacting the seating surface of the drainage valve seat, and the drainage valve main body is provided with a protrusion that regulates the engagement range of the flapper valve with respect to the support shaft, The protrusion is in contact with the engaging portion of the flapper valve at least when the flapper valve closes the drainage path, and when the flapper valve is pulled up, the protrusion is engaged with the engagement of the flapper valve. Features that it does not contact the joint There is provided a discharge valve device for.

  Furthermore, the protrusion is characterized in that it protrudes downward at a predetermined distance from the tip of the support shaft.

  Also, a drain valve device disposed in a washing water tank for storing washing water for washing the toilet bowl, wherein a drainage formed at the bottom of the washing water tank is provided with a pair of horizontally projecting support shafts. A drain valve main body having a drain valve seat that is attached to the mouth and forms a drain path to the toilet; and a pair of engaging portions that engage with the support shaft in a vertically swingable manner. A flapper valve that opens and closes the drainage path by being separated from and coming into contact with the seat surface, and the drainage valve main body part is the flapper of the pair of support shafts with which the pair of engagement parts of the flapper valve are engaged. Providing a drain valve device characterized in that a protrusion is provided only on a support shaft on the same side as the direction in which the valve is pulled up, and the protrusion engages the flapper valve with respect to the support shaft. It is.

  Also, a washing water tank for storing washing water for washing the toilet bowl and a pair of horizontally projecting support shafts are provided, and attached to a drain outlet formed at the bottom of the washing water tank, and a drainage path to the toilet bowl A drain valve main body portion having a drain valve seat, and a pair of engagement portions that engage with the support shaft so as to be swingable up and down, and are separated from and contacting the seat surface of the drain valve seat. A toilet cleaning tank comprising: a flapper valve that opens and closes; an operation part that opens and closes the drainage path by pulling up the flapper valve by an external operation; and a linear connecting member that connects the operation part and the flapper valve. In the apparatus, the drain valve main body is provided with a protruding portion on one of the pair of supporting shafts with which the pair of engaging portions of the flapper valve are engaged, and the protruding portion provides the Of the flapper valve with respect to the support shaft. There is provided a toilet flushing tank device, characterized in that for regulating the range of focus.

  According to the first aspect of the present invention, since the drain valve main body is provided with a protrusion for restricting the range of engagement of the flapper valve with respect to the support shaft, the engaging portion of the non-conforming flapper valve is provided. And the projecting portion interfere with each other, so that it is possible to prevent erroneous attachment of the non-conforming product flapper valve, and it is possible to attach only the conforming product. The engaging portion of the fitted flapper valve that is attached may abut against the protruding portion at least when the flapper valve closes the drainage path, but the flapper valve is lifted up. When the flapper valve does not come into contact with the protrusion, the engaging part of the standard flapper valve is difficult to come into contact with the protrusion on both the left and right sides when the flapper valve opens and closes. In addition, since the flapper valve opening / closing speed does not change, there is an effect that the washing water discharge amount does not vary and a certain amount of washing water can be discharged.

  According to the second aspect of the present invention, since the protruding portion protrudes downward at a predetermined distance from the tip of the support shaft, in addition to the above-described effects, the flapper valve is moved to the left and right. When the opening / closing operation is performed while swinging obliquely in the up / down direction, the flapper valve engaging portion and the protrusion on the support shaft are not more reliably in contact with each other, the flapper valve is smoothly opened / closed, and the flapper valve opening / closing speed is increased. Since it does not change, the amount of washing water discharged does not vary, and a certain amount of washing water can be discharged more reliably. In addition, since the protrusion is provided on the support shaft, integral molding is possible without paying attention to the positional relationship between the support shaft and the protrusion, which improves productivity and is advantageous in terms of cost. effective.

  According to the third aspect of the present invention, the drain valve main body is on the same side as the direction in which the flapper valve is lifted out of the pair of support shafts with which the pair of engaging portions of the flapper valve are engaged. Since the protrusion is provided only on the support shaft, and the engagement range of the flapper valve with respect to the support shaft is regulated by this protrusion, the engagement portion of the non-conforming flapper valve and the protrusion interfere with each other. Therefore, it is possible to prevent erroneous attachment of a non-conforming product flapper valve. In addition, when the standard flapper valve is pulled up, the engaging part on the pulling direction side is shifted in the direction away from the protruding part, and the engaging part on the opposite side to the pulling direction is naturally engaged because there is no protruding part. And protrusions do not contact. Therefore, the flapper valve smoothly opens and closes, and the flapper valve opening / closing speed does not change, so that the amount of washing water discharged does not vary, and a certain amount of washing water can be discharged more reliably. Furthermore, since it is possible to form integrally without paying attention to the positional relationship between the support shaft and the protrusion, and only the protrusion needs to be formed on one side of the support shaft, it is possible to produce more easily. This has the effect of reducing production costs.

  According to this invention of Claim 4, the said drain valve main-body part has a projection part in the downward direction to the spindle of one side among the said pair of spindles which the said pair of engaging part of the said flapper valve engages. Since this protrusion restricts the range of engagement of the flapper valve with respect to the support shaft, the interference between the engaging portion of the non-conforming flapper valve and the protrusion causes the non-conforming product of the flapper valve. Incorrect mounting can be prevented. Furthermore, when the standard flapper valve is swung left and right diagonally up and down to open and close the flapper valve, even if the angle of the diagonal vertical direction is large, if there is a protrusion on the side opposite to the lifting direction The engaging portion on the direction side does not contact because there is no protrusion. On the other hand, although the upper half of the engaging portion on the opposite side to the pulling direction is twisted, the projection is provided downward, so that it does not contact and the lower half separates from the projection. So that it does not touch the protrusion. Further, when there is a protruding portion on the pulling direction side, the engaging portion on the pulling direction side is not in contact because it is displaced in a direction away from the protruding portion. On the other hand, the engaging portion on the opposite side to the pulling direction does not come into contact because there is no protrusion. Therefore, in either case, the flapper valve opens and closes smoothly, and the flapper valve opening and closing speed does not change, so the amount of washing water discharged does not vary and a certain amount of washing water can be discharged. There is. Furthermore, since it is possible to form integrally without paying attention to the positional relationship between the support shaft and the protrusion, and only the protrusion needs to be formed on one side of the support shaft, it is possible to produce more easily. This has the effect of reducing production costs.

  In the present invention, a drain valve device disposed in a wash water tank for storing wash water for washing a toilet bowl, wherein a pair of horizontally projecting support shafts are provided and formed at the bottom of the wash water tank. A drain valve main body portion having a drain valve seat attached to the drain outlet to form a drain passage to the toilet, and a pair of engaging portions that engage with the support shaft so as to be swingable up and down. A flapper valve that opens and closes the drainage path by being separated from and coming into contact with the seating surface of the seat, and the drainage valve main body is provided with a projection that regulates a range in which the flapper valve is engaged with the support shaft. At least when the flapper valve closes the drainage path, the portion contacts the engaging portion of the flapper valve, and when the flapper valve is pulled up, the engaging portion of the flapper valve It is configured not to come into contact with.

  Furthermore, the protrusion is characterized in that it protrudes downward at a predetermined distance from the tip of the support shaft.

  Also, a drain valve device disposed in a washing water tank for storing washing water for washing the toilet bowl, wherein a drainage formed at the bottom of the washing water tank is provided with a pair of horizontally projecting support shafts. A drain valve main body having a drain valve seat that is attached to the mouth and forms a drain path to the toilet; and a pair of engaging portions that engage with the support shaft in a vertically swingable manner. A flapper valve that opens and closes the drainage path by being separated from and coming into contact with the seat surface, and the drainage valve main body part is the flapper of the pair of support shafts with which the pair of engagement parts of the flapper valve are engaged. A protrusion is provided only on the support shaft on the same side as the direction in which the valve is lifted, and this protrusion is configured to restrict the range in which the flapper valve is engaged with the support shaft.

  Also, a washing water tank for storing washing water for washing the toilet bowl and a pair of horizontally projecting support shafts are provided, and attached to a drain outlet formed at the bottom of the washing water tank, and a drainage path to the toilet bowl A drain valve main body portion having a drain valve seat, and a pair of engagement portions that engage with the support shaft so as to be swingable up and down, and are separated from and contacting the seat surface of the drain valve seat. A toilet cleaning tank comprising: a flapper valve that opens and closes; an operation part that opens and closes the drainage path by pulling up the flapper valve by an external operation; and a linear connecting member that connects the operation part and the flapper valve. In the apparatus, the drain valve main body is provided with a protruding portion on one of the pair of supporting shafts with which the pair of engaging portions of the flapper valve are engaged, and the protruding portion provides the Of the flapper valve with respect to the support shaft. Configured to regulate the range of focus.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view schematically showing a toilet bowl cleaning tank device 100 applied to the present invention, and is a front sectional view before draining.

  As shown in FIG. 1, a toilet bowl cleaning tank device 100 is mounted on a toilet bowl (not shown) and adjusts the amount of drainage from the flush water tank 10 according to the type of toilet bowl. (For example, 6L) and adjustment to switch between a large amount of water (for example, 8L). The toilet cleaning tank device 100 stores cleaning water to be supplied to a toilet (not shown). Wash water tank 10, water supply device 20 that supplies and stores water in wash water tank 10, and drainage that discharges wash water for washing toilets stored in wash water tank 10 toward a toilet (not shown) And a valve device 30.

  The wash water tank 10 has a substantially rectangular box shape in appearance, and stores wash water supplied from a water supply source (not shown) and drains the wash water toward a toilet (not shown). .

  The water supply device 20 is cleaned from a water supply pipe 21 that extends vertically upward from the bottom 10 a of the cleaning water tank 10 and is connected to a water supply source (not shown), and a water supply pipe 21 that is disposed at the upper end of the water supply pipe 21. A water supply valve 22 for switching water discharge / stop to the water tank 10 and a float unit 23 for switching water discharge / stop by the water supply valve 22 in accordance with the vertical movement according to the fluctuation of the water level in the wash water tank 10 are provided. is doing.

  One end of the water supply device 20 is rotatably supported by the upper end of a water supply valve 22 with a built-in diaphragm valve. By switching the opening and closing of the water supply valve 22 by turning, the water supply valve 22 discharges water and stops water. In addition to switching, the lever lever 24 having a float portion 23 suspended from the other end is provided on the side surface of the water supply valve 22 by a water discharge pipe 27, and water discharged from the water supply valve 22 is directed to the bottom 10 a of the wash water tank 10. To discharge downward.

  The water supply pipe 21 is connected to a water supply source (not shown), and discharges water toward the cleaning water tank 10 by water pressure from the water supply source.

  The float unit 23 is lowered when the level of the cleaning water in the cleaning water tank 10 is lowered to open the water supply valve 22 via the lever lever 24, while the level of the cleaning water in the cleaning water tank 10 is When it rises, it moves up and down to close the water supply valve 22 by ascending.

  The water discharge pipe 27 opens toward the lower side, which is the direction in which water is discharged. The wash water discharged from the water discharge pipe 27 is replenished in the wash water tank 10 whose water level has dropped due to the drainage by the drain valve device 30, thereby maintaining the water level in the wash water tank 10 at a predetermined full water level. It has become so. The water discharge pipe 27 also has a refill pipe 28 that branches at an intermediate position and extends toward an upper end opening 38a of an overflow pipe 38 described later, and is inserted downward from the upper end opening 38a by a predetermined distance. Yes.

  Therefore, in the water supply apparatus 20, when the flush water in the flush water tank 10 is drained toward the toilet by the drain valve apparatus 30, the float portion 23 is lowered as the water level is lowered, and the lever lever 24 is By rotating downward, the water supply valve 22 is opened, water discharge from the water discharge pipe 27 is started, and water supply to the wash water tank 10 is started. On the other hand, as the water level rises due to continuation of water supply, the float portion 23 rises, the lever lever 24 rotates upward, the water supply valve 22 is closed, and the water discharge pipe 27 is stopped. Thereby, the inside of the washing water tank 10 is maintained at a predetermined water level.

  Next, the drain valve device 30 will be described. As shown in FIG. 1, the drain valve device 30 includes an operation lever device 31 supported on the side wall of the cleaning water tank 10 and one end fixed to the operation lever device 31 and extending substantially horizontally in the cleaning water tank 10. And a rotating shaft 32 that rotates as the operating lever device 31 is operated.

  The drain valve device 30 also includes a linear connecting member 33 as a connecting portion suspended from the other end of the rotating shaft 32, a flapper valve 34 in which the lower end of the linear connecting member 33 is locked, and a flapper valve 34. A float 35 fixed to the linear connecting member 33 at a predetermined distance above, a retaining ring 35a as a locking member locked to the linear connecting member 33 above the float 35, and a linear connection Between the float 35 of the member 33 and the flapper valve 34, a predetermined width is provided. The sleeve 36 sandwiches the float 35 together with the retaining ring 35 a, and the flapper valve 34 is provided at the bottom 10 a of the cleaning water tank 10. And a drain valve seat 37a formed on the upper surface of the peripheral edge of the drain port 37, and an overflow pipe 38 continuously connected to a drain passage 37b which is an internal passage of the drain valve seat 37a. Water valve and a main body portion 30a.

  The overflow pipe 38 drains excess cleaning water in the cleaning water tank 10, is formed in a substantially cylindrical shape, and is a drain valve formed on the upper surface of the peripheral edge of the drain port 37 that is opened and closed by the flapper valve 34. It communicates with the lateral side of the drainage path 37b of the seat 37a through a horizontal pipe. In the present embodiment, the flapper valve 34 is supported at the lower end portion of the overflow pipe 38 so as to be rotatable up and down.

  An operation lever device 31 rotatably supported on a side wall of the wash water tank 10 via a predetermined fixing tool, an operation lever 31a for transmitting the rotation operation of the user of the toilet bowl cleaning tank device 100 to the rotation shaft 32, The operation lever 31a after the rotation operation and the operation lever adjustment portion 31b having a damper function for generating a resistance force when the rotation shaft 32 returns to the original position are provided.

  The linear connecting member 33 has its upper end locked to the end opposite to the end to which the operation lever 31a of the rotary shaft 32 is connected, and its lower end connected to the upper surface of the flapper valve 34. In order to transmit the above-described operation received by the unit to the flapper valve 34, the operation unit and the flapper valve 34 are connected. When the linear connecting member 33 is pulled upward through the rotation of the rotary shaft 32 by operating the operating portion, the flapper valve 34 is thereby lifted upward. At this time, the linear connecting member 33 is connected to the upper surface of the flapper valve 34 and functions as a string-like pulling member that pulls the flapper valve 34 upward.

  The flapper valve 34 is formed of, for example, an elastic material such as synthetic resin, and has an outer surface provided with a sealing surface 34a that is seated on the seating surface at the upper end of the drainage valve seat 37a of the drainage port 37 on the lower surface on the radially outer side. A substantially disc-like valve body 51 and a pair of left and right support shafts 39 that support the valve body 51 at one end and project at the lower end of the overflow pipe 38 at the other end are pivotally supported in a vertically rotatable manner. It has the distraction connection part 52.

  In this manner, the flapper valve 34 is pivotally supported by a pair of left and right support shafts 39 protruding from the lower end portion of the overflow pipe 38, and pivots up and down around the support shaft 39 to drain the drainage port 37. The drainage passage 37b of the valve seat 37a is opened and closed.

  That is, by rotating the flapper valve 34 about the pair of left and right support shafts 39 so as to separate the sealing surface 34a from the seating surface at the upper end of the drainage valve seat 37a of the drainage port 37, the drainage port shown in FIG. 37 is opened. On the other hand, the flapper valve 34 is rotated downward about the support shaft 39 from this open state, and the sealing surface 34a is seated on the seating surface of the drainage valve seat 37a of the drainage port 37, whereby the drainage shown in FIG. The mouth 37 is closed.

  The drain port 37 is disposed at a substantially center of the bottom portion 10a of the cleaning water tank 10 with a predetermined height from the bottom portion 10a, and the cleaning water in the cleaning water tank 10 is supplied with the flapper valve 34 opened. It drains toward the toilet through a pipe (not shown).

  As described above, the lower end of the overflow pipe 38 communicates with the drainage port 37 via the horizontal pipe and the drainage path 37b. Excess washing water in the washing water tank 10 from the upper end opening 38a, that is, full water. Washing water in excess of the time level is drained through the drain port 37. In addition, the overflow pipe 38 supplies water supplied from the refill pipe 28 inserted downward by a predetermined distance from the upper end opening 38a at the upper end so as to fill a trap portion (not shown) provided in the toilet bowl. It has become.

  In the toilet bowl cleaning tank device 100 configured as described above, the draining operation is performed as follows.

  As shown in FIG. 1, in the toilet bowl cleaning tank device 100, the level of the cleaning water stored in the cleaning water tank 10 is the water level when the water is full, and the flapper valve 34 is closed. In this state, the float 35 is submerged in the wash water and generates buoyancy. The float 35 applies only a buoyancy smaller than the force below the flapper valve 34 applied to the flapper valve 34 based on the pressure of the wash water at the level of full water to the flapper valve 34. Therefore, the flapper valve 34 has a buoyancy of the float 35. Even when added, the valve is kept closed.

  From this state, when the operation lever 31a is rotated in order to clean the toilet bowl (not shown), the linear connecting member 33 is pulled upward through the rotation of the rotary shaft 32, thereby lifting one end of the flapper valve 34. It is done.

  Then, as shown in FIG. 2, the flapper valve 34 rotates upward about a pair of left and right support shafts 39 to open the drainage port 37, and the drainage port 37 opens to a toilet (not shown). The drainage of the wash water is started, and the water level of the wash water in the wash water tank 10 starts to drop from the water level when the water is full.

  Thereafter, the flapper valve 34 is maintained in the open state by the buoyancy of the float 35 until the water level of the cleaning water in the cleaning water tank 10 decreases and reaches a predetermined height position.

  When the water level of the washing water reaches the height position of the float 35 and a part of the float 35 is exposed from the water surface, the buoyancy of the float 35 rapidly decreases, and the flapper valve 34 is caused by the suction force of the drain port 37. Is pivoted downward about the pair of left and right support shafts 39 to be in a closed state in which the drain port 37 is closed. That is, since a negative pressure is generated at the drain port 37 to cause the flapper valve 34 to rotate downward due to the outflow of cleaning water, the flapper valve 34 is closed by receiving the force of the negative pressure.

  When the flapper valve 34 is closed, the drainage of the wash water from the drain port 37 to the toilet is completed, and the water level of the wash water at this time is the same as that in the case of the small water wash. It is the water level at the time of dead water.

  In the toilet cleaning tank apparatus 100 configured as described above, the gist of the present invention resides in the provision of the protrusion 39a.

  Hereinafter, specific examples of the subject matter of the present invention will be described in detail.

  As shown in FIG. 1, an elbow-shaped horizontal pipe below the overflow pipe 38 is connected to the middle of the side wall of the drain valve seat 37a formed on the upper surface of the peripheral edge of the drain port 37 so that the drainage is integrated. A valve seat 37a is configured. That is, an overflow pipe 38 is erected on the lateral side of the drain valve seat 37a via a horizontal pipe. A pair of left and right support shafts 39 project from both side surfaces of the lower portion of the overflow pipe 38, and a flapper valve 34 for opening and closing the drainage passage 37b of the drainage valve seat 37a is provided on the pair of support shafts 39. It is pivotally connected. The pair of left and right support shafts 39 may protrude from both side surfaces of the lateral side upper portion of the drain valve seat 37a. That is, the pair of left and right support shafts 39 with which the flapper valve 34 is pivotally engaged are projected from the drain valve main body 30a.

  That is, as shown in FIG. 3, the flapper valve 34 is provided with a pair of left and right extension connection portions 52 at its base, and a pair of left and right extension connection portions 52 and a pair of left and right support shafts 39 at its distal ends. The engaging portions 53 for connecting the two are formed.

  The engaging portion 53 is an enormous portion as compared to the distracting connecting portion 52, and a shaft hole 54 for inserting a support shaft is formed in the center. It is easy to insert from the free end.

  The free end of the support shaft 39 is provided with a stopper 39b bent upward to prevent the engaging portion 53 from being detached.

  Further, as shown in FIG. 4, a protrusion 39 a is provided at a position excluding a part of the upper side of the axis of the pair of support shafts 39, and the flapper valve 34 on the pair of support shafts 39 is defined. Engagement of the flapper valve 34 that regulates the engagement range and is out of specification due to interference of the position of the projection 39a even if a non-standardized flapper valve 34, that is, a non-conforming product flapper valve 34 is to be mounted. The portion 53 cannot be attached to the support shaft 39.

  In this way, the protrusion 39a can regulate the prescribed engagement range of the flapper valve 34 on the pair of support shafts 39. For example, the drain valve provided at the drain port 37 of the bottom 10a of the wash water tank 10 Even if the flapper valve 34 that does not conform to the seat 37a is erroneously replaced and mounted, the position of the projection 39a preliminarily regulates the prescribed engagement range of the flapper valve 34 on the support shaft 39. No. 34 cannot be mounted on the support shaft 39 due to the interference of the projection 39a. When the flapper valve 34 closes the drainage passage 37b, the engaging portion 53 of the fitted flapper valve 34, which is an attached product, is at least in contact with the protrusion 39a. When the flapper valve 34 is pulled up, it does not come into contact with the protrusion 39a. For this reason, the engaging portion 53 of the standard flapper valve 34 is difficult to come into contact with the protrusion 39a on both sides when the flapper valve 34 is opened and closed, and the flapper valve 34 smoothly opens and closes. Since the opening / closing speed of the nozzle does not change, the amount of washing water discharged does not vary, and a certain amount of washing water can be discharged.

  Moreover, since the protrusion 39a is provided at a position excluding a part of the upper side of the axis of the support shaft 39, as shown in FIGS. 11 and 12, the flapper valve 34 is connected to the drain valve seat 37a. Even when the valve opening operation stress is applied from an oblique direction when the drainage passage 37b is opened and closed, even when an eccentric load is applied to the flapper valve 34 on the opposite side support shaft in the oblique lifting direction, The engaging portion 53 of the flapper valve 34 is less likely to come into contact with the downwardly projecting portion 39a of the support shaft 39, and the flapper valve 34 can be smoothly smoothed without interfering with the rotation of the engaging portion 53 when the flapper valve 34 is opened and closed. The on-off valve operation can be performed, and an appropriate amount of drainage from the washing water tank 10 can be performed.

  Further, on the support shaft 39 on the oblique direction side where the flapper valve 34 is pulled up, the engaging portion 53 is engaged between the projection 39a projecting from the support shaft 39 and the stopper 39b at the tip of the support shaft. However, since the width has a certain margin, the engaging portion 53 escapes toward the stopper 39b and does not come in contact with the protruding portion 39a.

  It should be noted that, in the support shaft 39 on the side of the oblique pull-up direction when the flapper valve 34 is opened, the surface of the engagement portion 53 on the projection 39a side is inclined with the lower half of the axis of the support shaft 39 toward the projection 39a. Even if the case where the lower half of the engaging portion 53 and the side surface of the protrusion 39a come into contact with each other, the lower half of the engaging portion 53, that is, the engagement connected to the distraction connecting portion 52 is provided. When the most distal portion 53a of the portion 53 contacts the side surface of the projection 39a, the most distal portion of the engagement portion 53 has a maximum torque when pivoting about the support shaft 39, and a slightly protruding projection The contact with the side surface 39a does not hinder the opening operation of the flapper valve 34.

  The above-described position excluding a part of the upper side of the axis of the support shaft 39 means that the engaging portion 53 of the flapper valve 34 is opened and closed when the flapper valve 34 is swung obliquely up and down. Refers to a position that does not hinder when rotating around the support shaft 39. That is, it refers to a position where the engaging portion 53 and the protruding portion 39a do not substantially interfere.

  Below, the modification which formed the protrusion part 39a in the position except a part of upper part rather than the axial center of the spindle 39 is demonstrated.

  FIG. 5 shows a first modification, which is similar to the above-described embodiment in that the left and right protrusions 39a protrude downward from the pair of left and right support shafts 39, but in this modification, The right and left protrusions 39a are characterized in that the protrusions 39a are provided across the lower side surfaces of the bases of the left and right support shafts 39 and the peripheral side surface of the overflow pipe 38 where the support shaft bases are connected.

  That is, the left and right protrusions 39a are disposed at the left and right positions that match the specified standard size of the flapper valve 34, in other words, the specified distance between the left and right extension connecting portions 52, and the overflow pipe. Thus, the protrusion is provided below the support shaft base part across the peripheral side surface of 38.

  By adopting such a configuration, the connecting portion of the support shaft 39 to the overflow pipe 38 can be reinforced, and the twisting with the engaging portion 53 of the flapper valve 34 can be eliminated, and the valve can be lifted and opened obliquely upward. Accordingly, the opening / closing valve operation of the flapper valve 34 can be performed smoothly, and the drainage function can be performed correctly.

  As a result, the opening / closing speed of the flapper valve 34 does not change, and the amount of washing water discharged does not vary, and a certain amount of washing water can be discharged from the washing water tank 10.

  In the embodiment and the first modification described above, that is, when the protrusion 39a is provided below the support shaft 39, it is possible to perform integral molding, which improves productivity, and is advantageous in terms of cost. For example, as compared with the case where the protrusion 39a is formed on the overflow pipe 38 or the drain valve seat 37a, these are formed at the time of integral molding without paying attention to the positional relationship between the support shaft 39 and the protrusion 39a for restricting the engagement range. This has the effect of completing the positional relationship.

  FIG. 6 shows a second modification in which the left and right protrusions 39a are not provided on the support shaft 39 but on the peripheral side surface of the overflow pipe 38 at a position below the support shaft 39 along the support shaft 39. To do.

  In other words, the protrusion 39a of the second modification has a length that matches the distance between the engagement portions 53 of the distraction connection portion 52 in the standard-compliant flapper valve 34, and the length of the support shaft 39. A fixed interval is maintained between the lower surface and the lower surface, and the upper surface of the overflow tube 38 is protruded along the longitudinal direction of the support shaft 39 below the support shaft.

  With this configuration, only the engaging portion 53 of the standard-compliant flapper valve 34 can be engaged with the support shaft 39 by this projection 39 a, and a certain distance is provided below the support shaft 39. Since the protrusion 39a is held and held, the flapper valve 34 is lifted obliquely upward even when the most distal portion 53a of the engaging portion 53 is rotated by the valve opening operation by pulling the flapper valve 34 obliquely upward. In the support shaft 39 on the opposite side, the side surface of the engagement portion 53 on the projection portion 39a side does not contact the side surface of the projection portion 39a at the lower position, and the support shaft 39 on the oblique pull-up direction side of the flapper valve 34 In general, the engaging portion 53 escapes in the direction of the stopper 39b at the tip end portion of the support shaft 39 so that it does not contact the protruding portion 39a. However, the side surface of the protruding portion 39a and the lower half side surface of the engaging portion 53 are in contact with each other. Even if there is, the position of the protrusion 39a is positioned as low as possible within the prescribed engagement range of the flapper valve 34, so the contact area is small and the lower half of the engagement portion 53 That is, since the rotational torque of the engagement portion distal end portion 53a is large, it does not hinder the rotation of the engagement portion 53, that is, the opening / closing valve operation of the flapper valve 34.

  Accordingly, the flapper valve 34 is smoothly opened and closed, and the opening and closing speed of the flapper valve 34 does not change. As a result, the amount of washing water discharged does not vary, and a certain amount of washing water is discharged from the washing water tank 10. it can.

  In the above-described embodiment, the first modification, and the second modification, the pair of left and right support shafts 39 are provided with a pair of left and right projections 39a projecting downward, or the projection 39a is supported below the support shaft 39. Although the projection provided on the peripheral side surface of the overflow pipe 38 along the shaft 39 is illustrated, the protrusions 39a can be provided only on one side, in addition to the case of providing a pair of left and right.

  That is, FIG. 7 shows a third modified example. When the flapper valve 34 is lifted obliquely upward by the linear connecting member 33 and opened, the support located on the side opposite to the pulling direction of the flapper valve 34 is shown. The protrusion 39a protrudes downward only on the shaft 39, or the protrusion 39a protrudes only on the peripheral surface of the overflow pipe 38 below the support shaft 39 located on the opposite side to the pulling-up direction of the flapper valve 34. be able to.

  In this one projection 39a, the prescribed engagement range of the flapper valve 34 can be restricted, and at the same time, the projection 39a does not interfere with the rotation of the engagement portion 53 when the flapper valve 34 is opened. The flapper valve 34 can be opened smoothly. In particular, the other engaging portion 53 has no protrusion 39a, so that the engaging portion 53 is inclined in the pulling-up direction of the flapper valve 34. Even if it rotates, there is no hindrance to the movement, and the flapper valve 34 can be opened more smoothly.

  Further, in the modified example of the protruding portion 39a only on one side, when the flapper valve 34 is lifted obliquely upward by the linear connecting member 33 as described above, the support shaft 39 positioned on the opposite side to the pulling direction is opened. In addition to the third modified example in which the protrusion 39a is provided only on the circumferential surface of the overflow pipe 38 below the support shaft 39 on the opposite side, the flapper valve is a fourth modified example as shown in FIG. It is also possible to provide the projections 39a only on the support shaft 39 on the side of the upper side of the diagonally upward direction 34, or only on the peripheral side surface of the overflow pipe 38 below the support shaft 39.

  That is, when the protrusion 39a is provided in relation to the support shaft 39 on the side of pulling up the flapper valve 34, the engaging portion 53 escapes to the side of pulling up the flapper valve 34 and is a stopper that is the tip of the support shaft 39 on the side of pulling up. 39b tends to move away from the projection 39a as much as possible, and even if the projection 39a partially contacts the tip of the engagement portion 53 during rotation, the tip of the engagement portion 53 rotates. Since the torque is large, the valve opening operation of the flapper valve 34 is not hindered.

    As a result, the flapper valve 34 smoothly opens and closes, and the opening and closing speed of the flapper valve 34 does not change, so that the amount of washing water discharged does not vary and a certain amount of washing water can be discharged from the washing water tank 10. . Furthermore, it is possible to perform integral molding without paying attention to the positional relationship between the support shaft 39 and the projection 39a, and it is only necessary to form the projection 39a on only one of the support shafts 39, so that production is easier. It is possible to reduce the production cost.

  FIG. 9 shows a fifth modification in which the left and right protrusions 39a have protrusions 39a extending over the lower side surfaces of the bases of the left and right support shafts 39 and the peripheral side surface of the overflow pipe 38 in which the support shaft bases are connected. In this modification, the protrusion 39a is provided up to a position excluding a part of the upper side from the axis of the support shaft 39. It has a special feature.

  That is, the left and right protrusions 39a are disposed at the left and right positions that match the specified standard size of the flapper valve 34, in other words, the specified distance between the left and right extension connecting portions 52, and the overflow pipe. It is provided so as to protrude below the support shaft base part over the 38 circumferential side surfaces, and further to a position excluding a part of the upper part from the shaft core of the support shaft 39.

  By adopting such a configuration, the connecting portion of the support shaft 39 to the overflow pipe 38 can be more reliably reinforced, and the twisting with the engaging portion 53 of the flapper valve 34 can be eliminated, so The on / off valve operation of the flapper valve 34 that is pulled up and opened can be made smooth to perform the drainage function correctly.

  That is, since the opening / closing speed of the flapper valve 34 does not change, the washing water discharge amount does not vary, and a certain amount of washing water can be discharged from the washing water tank 10.

  FIG. 10 shows a sixth modification, in which the left and right protrusions 39a are not provided on the support shaft 39, but are provided on the peripheral side surface of the overflow pipe 38 along the support shaft 39. Although similar to the example, the present modification is characterized in that the engaging portion 53 and the protruding portion 39a on the upper side of the shaft core of the support shaft 39 are projected at a position where they do not interfere with each other.

  In other words, the protrusion 39a of the sixth modification has a length that matches the distance between the engagement portions 53 of the distraction connection portion 52 in the standard-compliant flapper valve 34, and the length of the support shaft 39. Maintaining a certain distance between the upper surface and the upper surface of the support tube 39 along the longitudinal direction of the support shaft 39, the engagement portion 53 is located on the peripheral side surface of the overflow pipe 38 on the upper rotation side and the rotation direction side. Projected.

  With this configuration, only the engaging portion 53 of the standard-compliant flapper valve 34 can be engaged with the support shaft 39 by the projection 39 a, and a certain distance is provided obliquely above the support shaft 39. And the protrusion 39a is disposed, so that the flapper valve 34 can be lifted diagonally upward even if the leading edge 53a of the engaging portion 53 is rotated by the valve opening operation by pulling the flapper valve 34 diagonally upward. In the support shaft 39 on the opposite side, the side surface of the engaging portion 53 on the side of the protrusion 39 a is in contact with the side surface of the protrusion 39 a located obliquely above, but the protrusion 39 a is centered on the support shaft 39 and the flapper valve 34. Is located on the opposite side, so that the contact area is small, so that it does not hinder the rotation of the engaging portion 53, that is, the opening / closing valve operation of the flapper valve 34. Further, in the support shaft 39 on the oblique pull-up direction side of the flapper valve 34, the engagement portion 53 generally escapes in the direction of the stopper 39b at the tip of the support shaft 39, and the engagement portion 53 is separated from the protrusion 39a. Since it is twisted, it does not contact the protrusion 39a.

  Accordingly, the flapper valve 34 is smoothly opened and closed, and the opening and closing speed of the flapper valve 34 does not change. As a result, the amount of washing water discharged does not vary, and a certain amount of washing water is discharged from the washing water tank 10. it can.

  The shape and material of the protrusion 39a in the embodiment and each modification are optimally selected so as not to hinder the opening / closing operation of the conforming standard flapper valve 34. For example, regarding the shape, the shape of the protruding portion 39a protruding downward on the support shaft 39 is a columnar shape, or the protrusion 39a is formed on the peripheral side surface of the overflow pipe 38 along the support shaft 39. When the protrusion 39a is projected at a lower position, the tip of the protrusion 39a has a smooth shape such as a hemisphere so that the contact area when the protrusion 39a and the engagement portion 53 of the flapper valve 34 are in contact with each other is made possible. Can be made small.

  The material may be, for example, a synthetic resin that allows the flapper valve 34 to smoothly open and close even when the protrusion 39a and the engaging portion 53 come into contact with each other.

  Accordingly, the opening / closing valve operation of the flapper valve 34 becomes smooth and the opening / closing speed does not change, so that the amount of washing water discharged does not vary, and a certain amount of washing water can be discharged from the washing water tank 10.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims. It can be changed. For example, in the present invention, the protrusion 39a is provided on the side surface of the overflow pipe 38 or the drain valve seat 37a, but is provided so as to stand upward from the upper end surface of the drain valve seat 37a in the vicinity of the overflow pipe 38. Also good.

It is the schematic which showed the front cross section before the drainage of the toilet bowl washing tank device applied to the present invention. It is the schematic which showed the front cross section in the waste_water | drain of the toilet bowl washing tank apparatus applied to this invention. It is the figure which showed the flapper valve of the toilet bowl washing | cleaning tank apparatus applied to this invention. It is the figure which showed the projection part concerning embodiment of this invention. It is the figure which showed the 1st modification of the projection part concerning embodiment of this invention. It is the figure which showed the 2nd modification of the projection part concerning embodiment of this invention. It is the figure which showed the 3rd modification of the projection part concerning embodiment of this invention. It is the figure which showed the 4th modification of the projection part concerning embodiment of this invention. It is the figure which showed the 5th modification of the projection part concerning embodiment of this invention. It is the figure which showed the 6th modification of the projection part concerning embodiment of this invention. It is the schematic which showed that the flapper valve of the tank apparatus for toilet bowl washing applied to this invention was pulled up diagonally upward. It is the schematic diagram which showed the relationship between the engaging part and projection part in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Washing water tank 10a Bottom part 20 Water supply apparatus 21 Water supply pipe 22 Water supply valve 23 Float part 24 Lever type lever 27 Water discharge pipe 28 Refill pipe 30 Drain valve apparatus 30a Drain valve main-body part 31 Operation lever apparatus 31a Operation lever 31b Operation lever adjustment part 32 Rotating shaft 33 Linear connecting member 34 Flapper valve 34a Seal surface 35 Float 35a Retaining ring 36 Sleeve 37 Drainage port 37a Drainage valve seat 37b Drainage path 38 Overflow pipe 38a Upper end opening 39 Support shaft 39a Protruding part 39b Stopper 51 Valve body 52 Extension coupling Part 53 Engagement part 53a The most advanced part of the engagement part 54 Shaft hole 100 Tank apparatus for toilet flushing

Claims (4)

A drain valve device disposed in a wash water tank for storing wash water for washing a toilet,
A drain valve body having a drain valve seat provided with a pair of horizontally projecting support shafts and attached to a drain outlet formed at the bottom of the wash water tank to form a drain path to the toilet;
A flapper valve having a pair of engaging portions that engage with the support shaft so as to be swingable up and down, and that opens and closes the drainage path by being separated from and contacting the seating surface of the drainage valve seat;
With
The drain valve main body is provided with a protrusion that restricts the range of engagement of the flapper valve with respect to the support shaft, and the protrusion is at least provided when the flapper valve closes the drainage path. The drainage valve device according to claim 1, wherein the drain valve device is in contact with the engaging portion of the valve and does not contact the engaging portion of the flapper valve when the flapper valve is pulled up.   2. The drain valve device according to claim 1, wherein the protruding portion protrudes downward at a predetermined distance from the tip of the support shaft. A drain valve device disposed in a wash water tank for storing wash water for washing a toilet,
A drain valve body having a drain valve seat provided with a pair of horizontally projecting support shafts and attached to a drain outlet formed at the bottom of the wash water tank to form a drain path to the toilet;
A flapper valve having a pair of engaging portions that engage with the support shaft so as to be swingable up and down, and that opens and closes the drainage path by being separated from and contacting the seating surface of the drainage valve seat;
With
The drain valve main body portion is provided with a protrusion only on a support shaft on the same side as the direction in which the flapper valve is lifted, of the pair of support shafts with which the pair of engagement portions of the flapper valve are engaged. A drain valve device characterized in that a range in which the flapper valve engages with the support shaft is regulated by a protrusion. A washing water tank for storing washing water for washing the toilet,
A drain valve body having a drain valve seat provided with a pair of horizontally projecting support shafts and attached to a drain outlet formed at the bottom of the wash water tank to form a drain path to the toilet;
A flapper valve having a pair of engaging portions that engage with the support shaft so as to be swingable up and down, and that opens and closes the drainage path by being separated from and contacting the seating surface of the drainage valve seat;
An operation unit that opens and closes the drainage path by pulling up the flapper valve by an external operation;
A linear connecting member that connects the operating portion and the flapper valve;
In the toilet bowl cleaning tank device comprising:
The drain valve main body portion is provided with a protruding portion on one side of the pair of support shafts with which the pair of engaging portions of the flapper valve are engaged. A toilet cleaning tank device that restricts a range in which the flapper valve is engaged.

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