JP5234492B2 - Toilet flushing water supply device - Google Patents

Description

  The present invention relates to a toilet flushing water supply device, and more particularly, to a toilet flushing water supply device that supplies flush water to a flush water tank of a flush toilet.

  2. Description of the Related Art Conventionally, toilet bowls that discharge filth by siphon action by forming a rim spout and a jet spout in the bowl portion of a flush toilet and supplying wash water from these spouts are known. Such flush toilets are classified into a type in which wash water is directly supplied from a water supply source (for example, water supply) and a type in which wash water stored in a wash water tank provided in the flush toilet is supplied.

  As an example of a flush toilet equipped with this wash water tank, Patent Document 1 discloses a pilot-type diaphragm valve in the wash water tank in order to supply wash water from an external water supply source (water supply) into the wash water tank. A toilet flushing water supply device provided with a ball tap (water supply valve) is disclosed.

JP 2006-274540 A

  In the toilet flushing water supply device used in the toilet of Patent Document 1, a ball tap (water supply valve) having a pilot diaphragm valve is formed at the upper end of a water supply pipe connected to an external water supply source (water supply), and the float Is provided so as to penetrate the water supply pipe and move up and down.

  In the toilet flushing water supply device having such a structure, even when the float rises as the washing water level rises, the rattling is not large and can not rise smoothly. In addition, when the float rises and the pilot hole of the diaphragm valve is closed to switch from water discharge to water stoppage, the pressing force that closes the pilot hole due to fluctuations in the water pressure of the water supply pressure or fluctuations in the water level of the wash water (downward) The buoyancy (upward) of the float part also fluctuated, which caused a hunting phenomenon, and the float was shaken to generate vibration and noise. In particular, when the water pressure of the water supply source is high, this hunting phenomenon is likely to occur, which is a problem.

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and toilet flushing water supply that can prevent the occurrence of a hunting phenomenon that occurs when the water supply valve is switched from water discharge to water stoppage. The object is to provide a device.

In order to achieve the above object, the present invention is a toilet flushing water supply device that supplies flush water to a flush water tank of a flush toilet, comprising a water supply pipe that is connected to an external water supply source and extends in a vertical direction, A water supply valve that supplies water to the wash water tank by switching water discharge and stop water into the wash water tank supplied from the water supply pipe, and a fluctuation in the water level of the wash water in the wash water tank A float part that switches water discharge and water stop of the water supply valve by moving up and down, and a float guide part that is constituted by the water supply pipe itself or attached to the water supply pipe and guides the vertical movement of the float part, and A vertical arm that is fixed to the float unit and moves up and down together with the float unit, and a horizontal arm that is connected to the vertical arm and switches between water discharge and water stop of the water supply valve as the vertical arm moves up and down. And a sliding resistance applying means for applying a sliding resistance between the float part and the float guide part when the vertical movement of the float part is guided by the float guide part. , have a, the slide-resistance applying means is mounted in a state in which the longitudinal arm is inclined toward the float fixing portion fixed to the float portion from the arm connection part connected to the horizontal arm of the arm mechanism, the A part of the float part is constituted by being urged by the float guide part .
In the present invention configured as described above, the sliding resistance applying means provides sliding resistance between the float part and the float guide part when the vertical movement of the float part is guided by the float guide part. Even when the water level in the cleaning water tank moves up and down when the water supply valve switches from water discharge into the cleaning water tank supplied from the water supply pipe to water stoppage, it floats according to the vertical movement of the water surface. It is possible to prevent the part from moving up and down sensitively, and to suppress the occurrence of the hunting phenomenon of the float part. Further, since sliding resistance is provided between the float part and the float guide part when the vertical movement of the float part is guided by the float guide part, the washing water supplied from the water supply pipe by the water supply valve is washed water. Even if the water surface in the washing water tank moves up and down when switching from water discharge to the tank, the float part moves up and down with a simple structure according to the vertical movement of the water surface. And the occurrence of the hunting phenomenon in the float portion can be suppressed.

In the present invention, preferably, the sliding resistance applying means may further include a weight provided in the float portion, and a part of the float portion may be urged by the weight toward the float guide portion. .
In the present invention configured as described above, by providing a weight in the float part, the float guide part guides the vertical movement of the float part in a state where a part of the float part is biased by the float guide part. Therefore, even if the water level in the cleaning water tank moves up and down when the water supply valve switches from water discharge into the cleaning water tank supplied from the water supply pipe to the water stoppage, the water surface moves up and down. Accordingly, it is possible to prevent the float portion from moving up and down sensitively with a simple configuration, and it is possible to suppress the occurrence of the hunting phenomenon of the float portion.

In the present invention, preferably, the sliding resistance applying means is further provided in the float portion, and when the vertical movement of the float portion is guided by the float guide portion, the cleaning water supplied from the water supply pipe into the cleaning water tank A water contact portion to which water is applied may be provided, and the float portion may be urged to the float guide portion by utilizing the water pressure of the washing water that hits the water contact portion.
In the present invention configured as described above, the float portion is moved up and down in a state in which the float portion is urged by the float guide portion by using the water pressure of the washing water that hits the water contact portion provided in the float portion. Since the water guide valve can be guided by the float guide, the water level in the wash water tank moves up and down when the water supply valve is switched from water discharge to the wash water tank supplied from the water supply pipe to the stop water. However, it is possible to prevent the float portion from moving up and down too sensitively according to the vertical movement of the water surface with a simple configuration, and it is possible to suppress the occurrence of the hunting phenomenon of the float portion.

In the present invention, preferably, the sliding resistance applying means further includes a spring provided on the float guide part and / or the float part and biasing the float part to the float guide part, and the float part is energized by the biasing force of the spring. May be configured by being urged by the float guide portion.
In the present invention configured as described above, the float guide portion and / or the spring provided in the float portion guides the vertical movement of the float portion by the float guide portion while the float portion is biased by the float guide portion. Therefore, even if the water level in the cleaning water tank moves up and down when the water supply valve switches from water discharge into the cleaning water tank supplied from the water supply pipe to water stoppage, It is possible to prevent the float portion from moving up and down in response to the movement with a simple configuration, and it is possible to suppress the occurrence of a hunting phenomenon in the float portion.

In the present invention, it is preferable that the sliding resistance imparting means is further provided on the surface of the portion that guides the float portion of the float guide portion and / or the portion that is guided by the float guide portion of the float portion. You may provide the processing surface for increasing resistance.
In the present invention configured as described above, the processed surface for increasing the sliding resistance applied to the surface of the part of the float guide part that guides the float part and / or the part of the float part that is guided by the float guide part. As a result, sliding resistance is appropriately generated between the float part and the float guide part, so when the water supply valve switches from water discharge to the wash water tank supplied from the water supply pipe to stop water, Even if the water surface moves up and down, it is possible to prevent the float portion from moving up and down sensitively according to the vertical movement of the water surface, and to suppress the occurrence of the hunting phenomenon of the float portion.
In addition, the processed surface for increasing the sliding resistance is formed by a rough surface with fine irregularities so that the float does not move greatly except in the vertical direction when the float part moves up and down. As a specific method, a textured surface can be mentioned.

In this invention, Preferably, the float guide part may be provided in a part of outer surface of the said water supply pipe so that attachment or detachment is possible from a horizontal direction.
In the present invention configured as described above, the float guide part is detachably provided in a part of the outer surface of the water supply pipe from the lateral direction, and the float guide part guides the vertical movement of the float part. The surface where the float part and the float guide part come into contact can be brought close to the float part that moves up and down, the dimensions of these contact surfaces are easy to manage, and the sliding resistance between the float part and the float guide part is desired. Can be set. For this reason, it is possible to prevent hunting and to smoothly guide the flow and the vertical movement of the part. Moreover, since it can be attached or detached from the horizontal direction, the assembly work of the apparatus is simplified.

In the present invention, preferably, a plurality of ribs extending in the vertical direction from the upper end to the lower end of the float guide portion and / or the portion guided by the float guide portion of the float portion are formed in the float guide portion. Also good.
In the present invention configured as described above, a plurality of ribs are provided, and the vertical movement of the float portion is guided by being brought into contact with the plurality of ribs by the float guide portion. Can be easily adjusted by correcting the mold, so that the sliding resistance can be set as desired. Further, the hunting phenomenon of the float part can be suppressed, and the smooth vertical movement of the float part can be realized.

  According to the toilet flushing water supply device of the present invention, it is possible to prevent the occurrence of a hunting phenomenon that occurs when the water supply valve is switched from water discharge to water stop.

Hereinafter, a toilet flushing water supply device according to a first embodiment of the present invention will be described with reference to the accompanying drawings.
First, an example of a toilet bowl to which the toilet flushing water supply device of the present invention is applied will be described with reference to FIG. FIG. 1 is a cross-sectional view of a flush toilet to which the toilet flushing water supply device of the present invention is applied. As shown in FIG. 1, reference numeral 1 denotes a flush toilet. A bowl portion 2 is formed on the front side of the upper part of the flush toilet 1, a water guide channel 4 is formed on the rear side, and a lower side of the water guide channel 4. Are formed with drain trap lines 6 communicating with the bowl portion 2.

  An overhang-shaped rim 8 is formed on the upper edge of the bowl portion 2 of the flush toilet 1, and one or two rim spouts 10 through which flush water is supplied from the water conduit 4 are formed on the rim 8. The washing water descends while swirling so that the bowl part 2 can be washed. Further, a jet spout 12 to which wash water is supplied from the water conduit 4 is formed at the center lower portion of the bowl portion 2, and the wash water is spouted from the jet spout 12 toward the drain trap pipe 6, and the siphon Is to be generated in a short time.

  A washing water tank 14 for storing washing water is provided above the water conduit 4 of the flush toilet 1. A communication port 14 b communicating with the water conduit 4 of the flush toilet 1 is formed on the bottom surface 14 a of the flush water tank 14. As will be described later, various devices including the toilet flushing water supply device of the present invention are provided inside the flush water tank 14.

Next, various devices provided in the washing water tank 14 will be described with reference to FIGS. FIG. 2 is a cross-sectional perspective view showing the inside of the washing water tank, and FIG. 3 is a front view showing the inside of the washing water tank.
As shown in FIGS. 2 and 3, the flush water tank 14 is provided with a drain valve 16, an overflow pipe 18, a water supply pipe 22, a water supply valve 24, and a float 32.

  Specifically, the drain valve 16 is provided at a portion of the communication port 14b of the bottom surface 14a of the washing water tank 14, and includes a valve seat 16a, a valve body 16b, and a chain 16c connected to the valve body 16b. By operating a connected operation lever (not shown), the valve body 16b moves up and down, and an opening / closing operation is performed.

  The drain valve 16 stores the wash water in the wash water tank 14 by the closing operation, and the wash water in the wash water tank 14 through the water conduit 4 of the flush toilet 1 by the opening operation. And it guides to the jet spout 12.

  The overflow pipe 18 is provided so that an opening 18 a is formed at the upper end thereof and the lower end thereof communicates with the valve seat 16 a of the drain valve 16. Even if the water level of the washing water rises by this overflow pipe 18, the washing water overflows from the opening 18 a, passes through the valve seat 16 a of the drain valve 16, and further passes through the water conduit 4 of the flush toilet 1. After that, the rim water spouting port 10 and the jet water spouting port 12 are discharged into the bowl portion 2.

  Furthermore, a toilet flush water supply device 20 according to the first embodiment of the present invention is provided in the flush water tank 14.

  Next, the toilet flushing water supply device according to the first embodiment of the present invention will be described with reference to FIGS. The toilet flushing water supply device 20 includes a water supply pipe 22, a water supply valve 24, an arm mechanism 26, a float guide 30, and a float 32.

  First, as shown in FIGS. 5 and 6, the water supply pipe 22 is attached to the bottom surface 14 a of the cleaning water tank 14, connected to a water supply source (not shown) such as an external water supply, and the cleaning water is supplied to the cleaning water tank. 14 is supplied. The water supply pipe 22 has a water supply channel (primary side) 22a formed at the center, a drainage channel (secondary side) 22b formed at the outer side, and a drain outlet formed at the lower end of the drainage channel 22b. The washing water is discharged into the washing water tank 14 from 22c.

  Next, as shown in FIGS. 6 and 9, a diaphragm-type water supply valve 24 is provided at the tip of the water supply pipe 22 so as to be interposed between the water supply path 22a and the drainage path (secondary side) 22b. Is provided. The water supply valve 24 includes a valve housing 24b having a central shaft 24a and a diaphragm 24c attached to the central shaft 24a of the hubble housing 24b and capable of moving up and down along the central shaft 24a. A pilot hole 24d is formed between the diaphragm 24c and the central shaft 24a, and the pilot hole 24d allows the back of the water supply path (primary side) 22a of the water supply pipe 22 and the back side (upper side) of the diaphragm 24c. The pressure chamber 24e communicates with the pressure chamber 24e. A back pressure relief hole 24f is formed in the upper portion of the back pressure chamber 24e.

  The arm mechanism 26 includes a horizontal arm 28 and a vertical arm 36. The lateral arm 28 is attached to the upper surface of the valve housing 24b of the water supply valve 24, and can swing around the fulcrum 28a. A top seal 28 b that opens and closes the back pressure relief hole 24 f is attached to the left end portion of the horizontal arm 28. On the other hand, an upper end portion 36a of a vertical arm 36 that is fixed to a float 32 to be described later and moves up and down together with the float 32 is connected to the right end portion of the horizontal arm 28 by a hinge 28c. The horizontal arm 28 swings around the fulcrum 28a, and the top seal 28b opens and closes the back pressure release hole 24f to switch between water discharge and water stop of the water supply valve 24.

  Further, the vertical arm 36 is an arm connected to the horizontal arm 28 so that the vertical movement of the float 32 is guided by the float guide 30 in a state in which a part of the float 32 is urged by the float guide 30 and hits one side. The connecting portion 26a is attached to the float fixing portion 36b fixed to the float 32 in an inclined state. The float fixing part 36b is formed with a thread, and a part of these threads is screwed into a screw hole formed in the vertical arm fixing part 32a of the float 32 corresponding to the thread, The vertical arm 36 is fixed to the vertical arm fixing portion 32 a of the float 32.

  Next, as shown in FIG. 7, the float guide 30 includes a substantially cylindrical mounting portion 30a and a float sliding plate 30b. A plurality (two or more) of holes 30 c that engage with a plurality (three or more) of protrusions 22 d formed on the outer surface of the water supply pipe 22 are formed in the attachment portion 30 a. By engaging these protrusions 22d and holes 30c, the float guide 30 can be detachably attached (fitted) to the outer surface of the water supply pipe 22 from the lateral direction. A plurality of protrusions 22d of the water supply pipe 22 are formed in the vertical direction so that the float guide 28 can be easily positioned at a desired position.

  Thus, in this embodiment, since the float guide 30 can be easily detached from the water supply pipe 22 in the lateral direction, when adjusting the vertical position of the float 32, It is not necessary to remove the water supply valve from the washing water tank, and the vertical position of the float 32 can be easily adjusted.

  Next, as shown in FIGS. 6, 8, and 9, the float 32 includes a vertical arm fixing portion 32 a to which the above-described vertical arm 36 is fixed, a buoyancy generating portion 32 b that is a space formed inside, The float 32 is constituted by a concave portion 32c extending in the vertical direction for accommodating the float sliding plate 30b of the float guide 30 so that the float 32 is guided in the vertical direction. Further, since the vertical arm fixing portion 32a is screwed with a thread formed on the float fixing portion 36b of the vertical arm 36, the vertical arm 36 can be easily screwed with the horizontal arm 28 by rotating the vertical arm 36. The distance to 32 (that is, the vertical position of the float 32) can be adjusted.

  In particular, the relative position of the float 32 in the left-right direction with respect to the float guide 30 will be described in detail. As shown in FIG. 9, the vertical arm 36 is tilted from the arm connecting portion 26a to the float fixing portion 36b. Since it is attached to the arm fixing portion 32a, when the water supply valve 24 switches from water discharge to water stop, the horizontal arm 28 swings around the fulcrum 28a, so that the float 32 and the vertical arm 36 are inclined. It is guided by the sliding plate 30b of the float guide 30 and moves to the upper right. Before and after the movement, a part of the concave portion 32c of the float 32 is urged in a state where it partially contacts the contact surface 30d of the sliding plate 30b of the float guide 30 on the water supply pipe 22 side. A sliding resistance is generated on the contact surface 30d of the sliding plate 30b. Therefore, the sliding resistance generated between the recess 32c of the float 32 and the float sliding plate 30b can suppress the backlash and smoothly guide the vertical movement of the float 32.

  Further, as shown in FIG. 8, a plurality of (five) vertical ribs 32 d extending in the vertical direction from the upper end to the lower end are formed in the concave portion 32 c of the float 32, and the float 32 is connected to the float guide portion 30. When moving up and down while being guided by the float sliding plate 30b, it is possible to smoothly move up and down by contacting at least one of the vertical ribs 32d. As a result, it is possible to easily correct the mold for preventing the occurrence of rattling, and it is possible to obtain an appropriate sliding resistance between the concave portion 32c of the float 32 and the float sliding plate 30b. Furthermore, the occurrence of hunting can be suppressed by reducing backlash. The longitudinal ribs 32d may be formed on the float sliding plate 30b of the float guide 30, or may be formed on both the concave portion 32c of the float 32 and the float sliding plate 30b.

Next, the operation (action) of the toilet flushing water supply device according to the embodiment of the present invention will be described with reference to FIGS.
First, when the cleaning water is sufficiently stored in the cleaning water tank 14, the level of the cleaning water is the full water level A (see FIG. 3). At this time, the water supply valve 24 and the like are in the following state.
That is, as shown in FIG. 9, the float 32 is raised to the upper position, and the buoyancy of the float 32 pushes the right end (arm connecting portion 26a) of the horizontal arm 28 upward through the vertical arm 36. Thus, the horizontal arm 28 is urged counterclockwise about the fulcrum 28a, and the left end of the horizontal arm 28 is pushed downward. As a result, the top seal 28 b of the lateral arm 28 closes the back pressure relief hole 24 f of the water supply valve 24. At this time, since the back pressure chamber 24e and the water supply path (primary side) 22a of the water supply pipe 22 are communicated with each other by the pilot hole 24d, the pressures in the back pressure chamber 24e and the water supply path (primary side) 22a are equal. As a result, the diaphragm 24c moves downward and is closed according to the area ratio of pushing the diaphragm 24c (back pressure chamber side area> primary side area).

  In particular, before and after the diaphragm 24c is switched from the opened state to the closed state, a part of the concave portion 32c of the float 32 is in contact with the contact surface 30d of the sliding plate 30b of the float guide 30 on the water supply pipe 22 side. In this state, a sliding resistance is generated in the concave portion 32c of the float 32 and the contact surface 30d of the sliding plate 30b. Therefore, the backlash associated with the vertical movement of the float 32 is completely suppressed, the float 32 does not move up and down excessively according to the vertical movement of the water surface, and the occurrence of the hunting phenomenon of the float 32 is suppressed.

  Next, after using the flush toilet 1, the toilet user operates an operation lever (not shown), the drain valve 16 opens, and the flush water stored in the flush water tank 14 flows into the flush toilet 1. The flush toilet 1 is washed. Finally, the water level of the cleaning water in the cleaning water tank 14 becomes the water level B (see FIG. 3) which is empty.

Thereafter, the drain valve 16 is closed, and the wash water is supplied from the external water supply source (water supply) into the wash water tank 14 from the empty state (water level B) of the wash tank 14. At this time, the water supply valve 24 and the like are in the following state.
That is, as shown in FIG. 10, the float 32 is lowered to a lower position, exposed from the cleaning water, and hung from the air to the right end (arm connecting portion 26 a) of the horizontal arm 28 by the vertical arm 36. . At this time, the lateral arm 28 is urged clockwise around the fulcrum 28a by the weight of the float 32, and the left end of the lateral arm 28 is pushed upward. At this time, the top seal 28b of the lateral arm 28 opens the back pressure release hole 24f of the water supply valve 24, and the back pressure chamber 24e is opened to the atmosphere. As a result, the diaphragm 24c moves upward by being pushed by the pressure (tap pressure) in the water supply channel (primary side) 22a, and is opened.

  If the water supply valve 24 is opened, the cleaning water is supplied from an external water supply source (water supply) to the water supply path (primary side) of the water supply pipe 22, and further from the drain outlet 22c via the drainage path 22b. It is discharged into the washing water tank 14. Thereby, the water level in the washing water tank 14 gradually rises.

  Thereafter, when the water level in the wash water tank 14 rises to the full water level A shown in FIG. 3, the water supply valve 24 is closed as described above, and the supply of the wash water into the wash water tank 14 is stopped. .

According to the toilet flushing water supply device 20 according to the first embodiment of the present invention described above, the vertical arm fixing portion of the float 32 with the vertical arm 36 of the arm mechanism 26 inclined from the arm connecting portion 26a to the float fixing portion 36b. Since the diaphragm 24c of the water supply valve 24 is switched from the opened state to the closed state, a part of the concave portion 32c of the float 32 is provided with the water supply pipe 22 of the sliding plate 30b of the float guide 30 because the diaphragm 24c of the water supply valve 24 is switched to the closed state. The contact surface 30d on the side can be urged in a single-contacted state, and sliding resistance can be generated in the concave portion 32c of the float 32 and the contact surface 30d of the sliding plate 30b. As a result, the rattling caused by the vertical movement of the float 32 is completely suppressed, the float 32 does not move up and down excessively according to the vertical movement of the water surface, and the occurrence of the hunting phenomenon of the float 32 is completely suppressed. Can do.
Further, according to the toilet flushing water supply device 20 of the present embodiment, the float guide 30 is detachably provided in a part of the outer surface of the water supply pipe 22 from the lateral direction, and the float guide 30 guides the vertical movement of the float 32. Therefore, the contact surface 30d where the float 32 and the float guide 30 contact each other can be brought close to the concave portion 32c of the float 32 that moves up and down, and the dimensions of these contact surfaces can be easily managed, and the float 32 and the float guide can be controlled. The sliding resistance between 30 can be set as desired. For this reason, hunting can be prevented and the vertical movement of the float 32 can be smoothly guided. Moreover, since it can be attached or detached from the horizontal direction, the assembly work of the apparatus is simplified.
Furthermore, according to the toilet flushing water supply device 20 of the present embodiment, the concave portion 32c of the float 32 is provided with a plurality of vertical ribs 32d extending in the vertical direction from the upper end to the lower end thereof, and the vertical movement of the float 32 is floated. Since the guide 30 is brought into contact with and guides the plurality of vertical ribs 32d, the sliding resistance between them can be easily adjusted by correcting the mold, and the sliding resistance can be set as desired. Further, the hunting phenomenon of the float part can be suppressed, and the smooth vertical movement of the float part can be realized.

Next, a toilet flushing water supply device according to a second embodiment of the present invention will be described.
FIG. 11 is a schematic view illustrating a toilet flushing water supply device according to a second embodiment of the present invention. Here, in FIG. 11, the same parts as those of the first embodiment shown in FIGS. 1 to 10 are denoted by the same reference numerals, and description thereof is omitted.
As shown in FIG. 11, in the toilet flushing water supply device 40 of the present embodiment, a part of the recess 42 a of the float 42 is a piece with respect to the contact surface 30 d on the water supply pipe 22 side of the sliding plate 30 b of the float guide 30. A weight 44 is provided on a part of the float 42 as sliding resistance applying means for applying a sliding resistance between the float 42 and the float guide 30 by urging them so that they come into contact with each other.
According to the toilet flushing water supply device 40 of the present embodiment, the center of gravity position of the float 42 changes due to the weight 44 provided in a part of the float 42, and a rotational moment in the direction indicated by the arrow in FIG. The float 42 is tilted. Then, a part of the concave portion 42a of the float 42 is urged in a state where it partially contacts the contact surface 30d of the sliding plate 30b of the float guide 30 on the water supply pipe 22 side. An appropriate sliding resistance can be generated on the contact surface 30d of the moving plate 30b. As a result, before and after the water supply valve 24 is switched from the opened state to the closed state, rattling due to the vertical movement of the float 42 is completely suppressed, and the float 42 moves up and down sensitively according to the vertical movement of the water surface. The occurrence of the hunting phenomenon of the float 42 can be completely suppressed.

Next, a toilet flushing water supply device according to a third embodiment of the present invention will be described.
FIG. 12 is a schematic view illustrating a toilet flushing water supply device according to a third embodiment of the present invention. Here, in FIG. 12, the same parts as those of the first embodiment shown in FIGS. 1 to 10 are denoted by the same reference numerals, and description thereof is omitted.
As shown in FIG. 12, the toilet flushing water supply device 50 of the present embodiment includes a branch pipe 52 branched from the water supply pipe 22. Further, the float 54, the float guide 30, and the float 54 are energized so that a part of the concave portion 54 a of the float 54 comes into contact with the contact surface 30 d of the sliding plate 30 b of the float guide 30 on the water supply pipe 22 side. As a sliding resistance imparting means for imparting a sliding resistance between them, a part of the float 52 is provided with a water application plate 56 to which the cleaning water W supplied from the branch pipe 52 into the cleaning water tank 14 is applied. Yes.
According to the toilet flushing water supply device 50 of the present embodiment, the float 54 is inclined by using the water pressure of the washing water W from the branch pipe 52 applied to the water contact plate 56 of the float 54, and the recess 54 a of the float 54 is Part of the float guide 30 is urged in a state where it comes into contact with the contact surface 30d on the water supply pipe 22 side of the sliding plate 30b. As a result, an appropriate sliding resistance is generated in the contact surface 30d of the concave portion 54a of the float 54 and the sliding plate 30b before and after the water supply valve 24 is switched from the opened state to the closed state. The play associated with the vertical movement is completely suppressed, and the float 54 does not move up and down sensitively in accordance with the vertical movement of the water surface, and the occurrence of the hunting phenomenon of the float 54 can be completely suppressed.

Next, a toilet flushing water supply device according to a fourth embodiment of the present invention will be described.
FIG. 13 is a schematic diagram illustrating a toilet flushing water supply device according to a fourth embodiment of the present invention. Here, in FIG. 13, the same parts as those of the first embodiment shown in FIGS. 1 to 10 are denoted by the same reference numerals, and description thereof is omitted.
As shown in FIG. 13, in the toilet flushing water supply device 60 of the present embodiment, a branch pipe 62 branched from the water supply pipe 22 is provided in the float guide 30. Further, as a sliding resistance applying means for applying a sliding resistance between the float 64 and the float guide 30 by urging a part of the concave portion 64 a of the float 64 to the contact surface 30 d of the sliding plate 30 b of the float guide 30. The concave portion 64a of the float 64 that moves up and down the float guide 30 serves as a water contact portion to which the washing water W from the branch pipe 62 is directly applied.
According to the toilet flushing water supply device 60 of the present embodiment, the float 64 is urged against the sliding plate 30b of the float guide 30 by the water pressure of the flushing water W from the branch pipe 62 applied to the recess 64a of the float 64, A surface 64b facing the contact surface 30d of the sliding plate 30b of the float guide 30 in the concave portion 64a of the float 64 is in contact with the entire surface. As a result, before and after the water supply valve 24 is switched from the opened state to the closed state, an appropriate sliding resistance is generated on the partial surface 64b of the concave portion 64a of the float 64 and the contact surface 30d of the sliding plate 30b. Therefore, the rattling caused by the vertical movement of the float 64 is completely suppressed, the float 64 does not move up and down excessively according to the vertical movement of the water surface, and the occurrence of the hunting phenomenon of the float 64 is completely suppressed. Can do.

Next, a toilet flushing water supply device according to a fifth embodiment of the present invention will be described.
FIG. 14 is a schematic view showing a toilet flushing water supply device according to a fifth embodiment of the present invention. Here, in FIG. 14, the same parts as those of the first embodiment shown in FIGS. 1 to 10 are denoted by the same reference numerals, and description thereof is omitted.
As shown in FIG. 14, in the toilet flushing water supply device 70 of this embodiment, the sliding plate of the float guide 30 is used as sliding resistance applying means for applying sliding resistance between the float 72 and the float guide 30. An urging plate 74 is provided at 30b. A spring 76 is provided between the urging plate 74 and the sliding plate 30b, and the urging force of the spring 76 causes the contact surface 30d of the sliding plate 30b and the recess 72a of the float 72 to face each other. While the surface 72b always contacts, the contact surface 74a of the urging | biasing board 74 and the surface 72c which the recessed part 72a of the float 72 opposes always contact.
According to the toilet flushing water supply device 70 of the present embodiment, when the vertical movement of the float 72 is guided by the float guide 30 by the urging plate 74 and the spring 76 provided on the sliding plate 30 b of the float guide 30. Since the float 72 is always urged against the float guide 30 so as to generate a sliding resistance, the float 72 is moved up and down before and after the water supply valve 24 is switched from the opened state to the closed state. The backlash can be completely suppressed. Further, the float 72 does not move up and down sensitively according to the vertical movement of the water surface, and the occurrence of the hunting phenomenon of the float 72 can be completely suppressed.
In this embodiment, as an example of the sliding resistance applying means for applying sliding resistance between the float 72 and the float guide 30, an urging plate 74 and a spring 76 are provided on the sliding plate 30 b of the float guide 30. Although the provided form has been described, the present invention is not limited to such a form, and sliding resistance applying means corresponding to the urging plate 74 and the spring 76 may be provided on the float 72 side.
In short, the sliding resistance applying means corresponding to the urging plate 74 and the spring 76 can be provided on the float guide 30 side and / or the float 72 side.

Next, a toilet flushing water supply device according to a sixth embodiment of the present invention will be described.
FIG. 15 is a schematic view illustrating a toilet flushing water supply device according to a sixth embodiment of the present invention. Here, in FIG. 15, the same parts as those of the first embodiment shown in FIGS. 1 to 10 are denoted by the same reference numerals, and description thereof is omitted.
As shown in FIG. 15, in the toilet flushing water supply device 80 of the present embodiment, the contact surface 82 of the sliding plate 30 b of the float guide 30 is subjected to the texture processing, and the contact surface subjected to the texture processing. The sliding resistance is increased between the (textured surface) 82 and the contact surface 84 b facing the concave portion 84 a of the float 84.
According to the toilet flushing water supply device 80 of the present embodiment, the vertical movement of the float 84 can be achieved by applying a texturing process to the contact surface 82 of the sliding plate 30b of the float guide 30 as compared to the case where the texturing process is not applied. When the float 84 is guided by the float guide 30, the float 84 is in a state in which the sliding resistance is increased with respect to the float guide 30. Therefore, before and after the water supply valve 24 is switched from the opened state to the closed state, The play associated with the vertical movement of the float 84 can be completely suppressed. In addition, the float 84 does not move up and down excessively according to the vertical movement of the water surface, and the occurrence of the hunting phenomenon of the float 84 can be completely suppressed.
In the present embodiment, as an example, the embodiment in which the contact surface 82 of the sliding plate 30b of the float guide 30 is textured is described. However, the present invention is not limited to such a configuration, and the recess 84a of the float 84 is formed. The contact surface 84b may also be textured. In addition, the surface processing is often performed after surface molding, but this is not the only case, and a fine uneven pattern is formed on the mold during molding, thereby forming a rough surface with fine unevenness. May be.
In short, a rough surface is formed on the contact surface 82 of the float guide 30 and / or the contact surface 84b of the float 84 so that the float is not displaced greatly except in the vertical direction when the float portion moves up and down. In addition, sliding resistance can be added by deformation of the minute convex portion of the rough surface.

Next, a toilet flushing water supply device according to a seventh embodiment of the present invention will be described.
FIG. 16 is a schematic diagram illustrating a toilet flushing water supply device according to a seventh embodiment of the present invention. Here, in FIG. 16, the same parts as those of the first embodiment shown in FIGS. 1 to 10 are denoted by the same reference numerals, and the description thereof is omitted.
As shown in FIG. 16, in the toilet flushing water supply device 90 of the present embodiment, a float 92 is provided so as to penetrate the water supply pipe 22 and move up and down. Similarly to the first embodiment, the vertical arm 36 is attached in an inclined state from the arm connecting portion 26 a connected to the horizontal arm 28 to the vertical arm fixing portion 92 b of the float 92. The vertical movement of the float 92 is guided in a state in which a part of 92a is urged against the outer surface 94 of the water supply pipe 22 and hits one side.
According to the toilet flushing water supply device 90 of the present embodiment, a part of the opening 92a of the float 92 is attached to the outer surface 94 of the water supply pipe 22 before and after the water supply valve 24 is switched from the opened state to the closed state. The sliding resistance can be generated by urging them to one side. As a result, rattling caused by the vertical movement of the float 92 is completely suppressed, the float 92 does not move up and down excessively according to the vertical movement of the water surface, and the occurrence of the hunting phenomenon of the float 32 is completely suppressed. Can do.

It is sectional drawing of the flush toilet to which the toilet bowl washing water supply apparatus by 1st Embodiment of this invention is applied. It is a cross-sectional perspective view which shows the inside of the washing water tank containing the toilet bowl washing water supply apparatus by 1st Embodiment of this invention. It is a front view which shows the inside of the washing water tank containing the toilet bowl washing water supply apparatus of this invention. It is a top view which shows the toilet bowl washing water supply apparatus by 1st Embodiment of this invention. It is a front view which shows the toilet bowl washing water supply apparatus by 1st Embodiment of this invention. It is sectional drawing seen along the VI-VI line of FIG. It is a perspective view which shows the float guide of the toilet bowl washing water supply apparatus by 1st Embodiment of this invention. It is a top view which shows the float of the state which removed the cover part of the toilet bowl washing water supply apparatus by 1st Embodiment of this invention. It is a fragmentary sectional view which shows the valve closing state (water stop state) of the water supply valve of the toilet bowl washing water supply apparatus by 1st Embodiment of this invention. It is a fragmentary sectional view which shows the valve opening state (water supply state) of the water supply valve of the toilet bowl washing water supply apparatus by 1st Embodiment of this invention. It is the schematic which shows the toilet bowl washing water supply apparatus by 2nd Embodiment of this invention. It is the schematic which shows the toilet bowl washing water supply apparatus by 3rd Embodiment of this invention. It is the schematic which shows the toilet bowl washing water supply apparatus by 4th Embodiment of this invention. It is the schematic which shows the toilet bowl washing water supply apparatus by 5th Embodiment of this invention. It is the schematic which shows the toilet bowl washing water supply apparatus by 6th Embodiment of this invention. It is the schematic which shows the toilet bowl washing water supply apparatus by 7th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flush toilet 20, 40, 50, 60, 70, 80, 90 Toilet flush water supply device 22 Water supply pipe 22a Water supply path 22b Drainage path 22c Drainage port 22d Protrusion 24 Water supply valve 24c Diaphragm 24d Pilot hole 24e Back pressure chamber 24f Back pressure Punching hole 26 Arm mechanism 26a Arm connecting portion 28 Horizontal arm 28a Support point 28b Top seal 28c Hinge 30 Float guide 30a Mounting portion 30b Float sliding plate 30c Hole 30d Contact surface 32, 42, 54, 64, 72, 84, 92 Float 32a Vertical arm fixing part 32b Buoyancy generating part 32c Recess 32d Vertical rib 36 Vertical arm 36a Upper end part of vertical arm 36b Float fixing part of vertical arm

Claims (7)

A toilet flushing water supply device for supplying flush water to a flush water tank of a flush toilet,
A water supply pipe connected to an external water supply source and extending vertically;
A water supply valve that switches between discharging and stopping water into the cleaning water tank supplied from the water supply pipe and supplying the cleaning water into the cleaning water tank;
A float unit that switches between water discharge and water stop of the water supply valve by moving up and down with the fluctuation of the water level of the wash water in the wash water tank;
A float guide part configured by the water supply pipe itself or attached to the water supply pipe to guide the vertical movement of the float part;
A vertical arm that is fixed to the float unit and moves up and down together with the float unit, and a horizontal arm that is connected to the vertical arm and switches water discharge and water stop of the water supply valve in accordance with the vertical movement of the vertical arm. Arm mechanism,
Vertical movement of the float portion is closed and a slide-resistance applying means for applying sliding resistance between the float portion and the float guide portion when guided by the float guide part,
The sliding resistance applying means is attached in a state where the vertical arm of the arm mechanism is inclined from an arm connecting part connected to the horizontal arm to a float fixing part fixed to the float part, and a part of the float part The toilet flushing water supply device is configured by being biased by the float guide portion . The said sliding resistance provision means is further provided with the weight provided in the said float part, The part of the said float part is urged | biased by the said float guide part by this weight, It is comprised. Toilet flushing water supply device. The sliding resistance imparting means is further provided with the washing water supplied from the water supply pipe into the washing water tank when the vertical movement of the float part is guided by the float guide part. The toilet flushing water supply device according to claim 1, further comprising: a water contact portion that is configured to be urged by the float guide portion using a water pressure of the wash water that hits the water contact portion. The sliding resistance applying means further includes a spring provided in the float guide part and / or the float part and biasing the float part to the float guide part. The biasing force of the spring causes the float part to be 2. The toilet flushing water supply device according to claim 1, wherein the toilet flushing water supply device is configured to be urged by the float guide portion. The sliding resistance applying means further includes a process for increasing the sliding resistance applied to the surface of the part of the float guide part that guides the float part and / or the part of the float part that is guided by the float guide part. The toilet flushing water device of Claim 1 provided with the surface. The toilet flushing water supply device according to any one of claims 1 to 5 , wherein the float guide portion is detachably provided in a part of an outer surface of the water supply pipe from a lateral direction. The portion to be guided by the float guide part of the part and / or the float portion for guiding the float portion of the float guide part, according to claim 6, wherein the plurality of ribs extending vertically from its upper end to the lower end is formed Toilet bowl wash water supply device.

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