JP6622035B2 - Flush toilet - Google Patents

Description

  The present invention relates to a flush toilet bowl.

  In a conventional flush toilet that drives the washing water supply means with electric power, when a power failure occurs, the washing water supply means may not operate and the toilet bowl may not be washed. In response to this problem, for example, in Patent Document 1, cleaning water is supplied by electrical drive at the time of a power failure, and a valve in the drain socket is opened and closed by any one of manual operation, emergency power supply, and mechanical elements. A flush toilet is disclosed in which water is stored in a section for washing.

JP 2013-227852 A

  When supplying cleaning water at the time of a power failure, it is necessary to adjust the supply amount of cleaning water in order to prevent the cleaning water from overflowing from the bowl portion. In the flush toilet disclosed in Patent Document 1, the cleaning water supply time is electrically controlled so that the cleaning water in the bowl portion does not exceed a predetermined water level. For this reason, for example, when a failure of the electrical system occurs during a power failure such as a power failure due to a lightning strike, there has been a problem that the cleaning water overflows from the bowl portion without controlling the supply time of the cleaning water.

  In view of the above circumstances, the present invention is a flush toilet that drives flush water supply means by electric power, and prevents flush water from leaking out of the toilet bowl (bowl portion) without using electric power during a power failure. The purpose is to provide.

A flush toilet according to the present invention communicates with a toilet bowl, the toilet bowl and a drain socket, a drain pipe into which flush water flows from the toilet bowl, a pivot shaft provided in the drain pipe, and the A flapper rotatably connected around a rotation axis; a valve portion for opening and closing the flow path of the drainage pipe; and a flap part connected to the rotation axis, the flapper passing through the flow path of the drainage pipe An urging member for urging to keep the closed state; and a locking portion for keeping the flapper in a valve-opened state in which the drainage pipe is opened. The valve portion is locked when energized. The valve portion is held in the open state and can be switched to be held in the closed state by the urging member when not energized, and the valve portion is formed by the washing water when the flapper is closed. When the water head pressure on the flapper exceeds a predetermined value, the flapper rotates and the drainage Wherein the biasing force of the biasing member so as to form a flowing water can be a gap between the inner wall of the road and the flapper is set.

  According to this invention, the flapper can be urged by the urging member, and the state where the drain pipe is closed can be maintained. Furthermore, when the flushing water accumulates in the toilet bowl with the valve closed, and the water head pressure on the flapper exceeds a predetermined value, the flapper rotates to create a gap between the inner wall of the drain pipe and the flapper. Since the urging force of the urging member is set to such an extent that it is formed, when the amount of flush water in the toilet bowl exceeds a predetermined amount, an extra space is formed from the gap formed between the inner wall of the drainage pipe and the flapper. Wash water can be drained. As described above, the valve closing state and the state of draining excess washing water can be controlled by the urging member, so that the washing water in the toilet bowl can be controlled without a power source. Therefore, it is possible to prevent the washing water supplied into the toilet bowl from overflowing from the upper opening of the toilet bowl without using an emergency power source or the like at the time of a power failure.

In flushing toilet according to the present invention may further comprise a rotation operating unit for the valve unit is rotated to the rotating axis of said flapper so that the open state manually.

  According to this invention, by providing the rotation operation part, the flapper can be manually rotated around the rotation axis. Therefore, the washing water can be stored in the toilet bowl without using an emergency power source or the like at the time of a power failure.

  In the flush toilet according to the present invention, the portion of the drainage pipe where the flapper is provided and the flapper may be made of resin.

  According to the present invention, since the drain pipe and the flapper are excellent in molding and can be reduced in weight, a structure for keeping the flapper closed by the biasing member, and a gap between the inner wall of the drain pipe and the flapper are provided. The structure to be formed can be easily manufactured.

  According to the flush toilet of the present invention, it is possible to adjust the water level in the toilet bowl without using power during a power failure, and the water level in the toilet bowl can be adjusted stably even during a power failure.

It is sectional drawing which shows the flush toilet bowl which concerns on embodiment of this invention. It is sectional drawing which shows the flush toilet bowl which concerns on embodiment of this invention. It is a side view of the valve part of the embodiment of the present invention. It is sectional drawing of the valve part of embodiment of this invention. It is sectional drawing of the valve part of embodiment of this invention. It is a perspective view of a guide member in an embodiment of the present invention. It is a perspective view of the flush toilet bowl concerning the embodiment of the present invention. It is an exploded view of the latching | locking part of embodiment of this invention. It is a schematic diagram which shows operation | movement of the latching | locking part and valve part of embodiment of this invention. It is a schematic diagram which shows operation | movement of the latching | locking part and valve part of embodiment of this invention. It is a schematic diagram which shows operation | movement of the latching | locking part and valve part of embodiment of this invention. It is a schematic diagram which shows operation | movement of the latching | locking part and valve part of embodiment of this invention. It is a schematic diagram which shows operation | movement of the latching | locking part and valve part of embodiment of this invention. It is a schematic diagram which shows the operation | movement of the valve part at the time of the power failure of embodiment of this invention, and the flow of washing water.

  A flush toilet according to an embodiment of the present invention will be described. 1 and 2 are cross-sectional views of a flush toilet 1 according to the present embodiment. FIG. 1 shows the opened state of the valve portion, and FIG. 2 shows the closed state of the valve portion.

As shown in FIGS. 1 and 2, the flush toilet 1 according to the present embodiment is a so-called siphon wash-out type Western-style toilet, and includes a toilet body 2, a toilet bowl 3, a toilet drainage path 4, and a valve portion 5. A drain socket 10 and a toilet seat 11. The toilet body 2, the toilet bowl 3, and a part of the toilet drainage path 4 are integrally formed of ceramic. The toilet drainage path 4 and the drainage socket 10 constitute a drainage pipe.
In the following description, the direction in which the face of the user seated on the toilet seat 11 faces is defined as the front, and the direction in which the user seated on the toilet seat 11 faces is defined as the back.

  As shown in FIG. 1, the toilet drainage path 4 communicates with the opening at the bottom of the toilet bowl 3 and communicates with the drain socket 10 on the downstream side. The toilet drainage path 4 has a water storage part 4a, an ascending part 4b, a top part 4c, and a descending part 4d in order from the upstream of the flow path of the washing water.

  A valve unit 5 is provided in the toilet drainage path 4. Specifically, the valve unit 5 is located between the water reservoir 4a and the drain socket 10 and is located at the top 4c. FIG. 3 shows a side view of the valve unit 5. FIG. 4 shows a cross-sectional view of the valve portion 5 in the valve open state. FIG. 5 shows a cross-sectional view of the valve portion 5 in a closed state. The valve unit 5 includes a valve unit main body 42, a rotating shaft 51, and a flapper 52.

  The valve body 42 is an integrally formed member made of resin. The valve body 42 is joined in a watertight manner with a downstream end of the ceramic ascending portion 4b and a sealing material 44 interposed therebetween. The valve part main body 42 includes a flowing water pipe part 42a. The flowing water pipe part 42 a forms a pipe line that curves downward between the joint part 42 b with the rising part 4 b and the lower end opening part 42 c connected to the drain socket 10. The flowing water pipe part 42 a constitutes a part of the toilet drainage path 4.

  In the upper part of the curved portion of the flowing water pipe part 42a (the top part 4c of the toilet drainage path 4), there is an enlarged part 42d where the pipe line is wider than the joint part 42b side (upstream side). The enlarged portion 42d serves as an air reservoir where air remains even during running water. The enlarged portion 42d is formed with such a dimension that a rotation shaft and a flapper described later can be arranged.

  A step portion 42e is provided at the lower portion of the curved portion of the flowing water pipe portion 42a so that the pipe line is wider than the joint portion 42b side (upstream side).

  The rotating shaft 51 is provided at the top 4 c of the toilet drainage path 4. Specifically, the rotation shaft 51 is provided at the upper part of the curved portion of the flowing water pipe portion 42a. The rotation shaft 51 extends in a direction perpendicular to the flow path, and is attached so that both end portions penetrate the valve portion main body 42. The rotating shaft 51 is accommodated on the upstream side in the enlarged portion 42d.

  The flapper 52 is provided at the top 4 c of the toilet drainage path 4. Specifically, one end of the flapper 52 is rotatably attached to the rotation shaft 51. Therefore, the connecting portion 5c between the rotating shaft 51 and the flapper 52 is provided in the enlarged portion 42d (air reservoir). The flapper 52 is provided so as to be closed in a direction substantially orthogonal to the flow path in the flowing water pipe portion (pipe) 42a.

  The flapper 52 includes a flat plate portion 53 and a support portion 54. The flat plate portion 53 has an area enough to block the flow path of the flowing water pipe portion 42a and turn around the turning shaft 51 in the flowing water pipe portion 42a. The support portion 54 is connected to the flat plate portion 53, and one end portion thereof is rotatably engaged with the rotation shaft 51. The end portion 53a of the flat plate portion 53 located away from the rotation shaft 51 is curved so as to rise in the rotation direction. As shown in FIG. 2, the end portion 53a abuts on the step portion 42e when the valve is closed. The flow path can be sealed.

  As shown in FIGS. 1 and 4, the flat plate portion 53 is supported by the support portion 54 so as to be arranged along the inner wall 42 g on the upstream side of the flowing water pipe portion 42 a in a state where the flapper 52 is opened. Yes. Therefore, in the state where the flapper 52 is opened, the inner wall 42f of the flowing water pipe portion 42a and the flat plate portion 53 in the enlarged portion 42d are separated from each other. As shown in FIG. 4, the valve portion 5 is configured such that a gap S is formed between the inner wall 42 f of the valve body 42 and the peripheral portion 53 b of the flapper 52 in a state where the flapper 52 is opened. Yes.

  As shown in FIG. 4, the downstream end 42 j of the enlarged portion 42 d is formed so that the flow path is expanded outward from the inner wall 42 k on the lower end opening 42 c side of the flowing water pipe portion 42 a. That is, the downstream end portion 42j of the enlarged portion 42d protrudes outside the virtual flow path T connecting the inner wall 42g on the upstream side of the flowing water pipe portion 42a and the inner wall 42k on the lower end opening 42c side, and the flow path is enlarged. Yes.

  The flapper 52 is opened and closed by the rotation operation unit 6. The rotation operation unit 6 is provided above the enlarged portion 42 d on the outer surface side of the valve body 42. As shown in FIG. 3, the rotation operation unit 6 includes a rotation spring 61, a lever 62, a ball chain (long shaft member) 63, a guide member 64, and a locking portion 7.

  The rotating spring 61 is a torsion spring, and a coil portion is extrapolated to the end of the rotating shaft 51 protruding from the outer surface of the valve body 42, and the first end 61 a is provided in the valve body 42. The second end portion 61 b is engaged with the lever 62 while being in contact with the engagement portion 43. In the spring locking portion 43, a wall along a tangent line of a virtual circle centering on the rotation shaft 51 is formed at a portion where the rotation shaft 51 is disposed on the outer surface of the valve body 42. The rotation of the rotation spring 61 is restricted when the first end portion 61a contacts the wall.

  The lever 62 protrudes in a direction orthogonal to the rotation shaft 51 and is engaged with the support portion 54 of the flapper 52. The lever 62 can be rotated around the rotation shaft 51. Since the lever 62 is engaged with the support portion 54 of the flapper 52, the flapper 52 rotates as the lever 62 rotates.

  The lever 62 is urged in the direction indicated by the arrow A in FIG. 3 by the second end 62 b of the rotating spring 61. A ball chain (long shaft member) 63 is connected to the protruding end portion 62 a of the lever 62 via an urging member 55.

  The ball chain 63 is a long member having a first end 63 a connected to the lever 62 side and a second end 63 b extending to the outside of the toilet body 2. A ring 6c and a gripping part 63d are continuously provided at the second end 63b of the ball chain 63. The second end 63 b of the ball chain 63 is disposed in the opening / closing operation unit (operation unit) 66.

  The guide member 64 is provided above the enlarged portion 42 d on the outer surface side of the valve body 42. FIG. 6 shows a perspective view of the guide member 64. The guide member 64 is a molded member made of resin, and is a member in which the lever 62, the urging member 55, and the ball chain 63 are accommodated as shown in FIG. The guide member 64 has a function of guiding the path of the ball chain 63, and a function of preventing the ball chain 63, the urging member 55, and the lever 62 from falling off due to an external force.

  The guide member 64 is provided with an upper guide 64b and a lower guide 64c protruding from a side wall 64a. The upper end portion of the guide member 64 is provided with a lever accommodating portion 64d. As shown in FIG. 5, the guide member 64 is fixed to the valve body 42 by inserting a screw 64 f into the screw groove 64 e and the screwing portion 42 h of the valve body 42. The protruding amount of the upper guide 64b from the side wall 64a is larger than the protruding amount of the lower guide 64c. The ball chain 63 is accommodated between the upper guide 64b and the lower guide 64c and between the side wall 64a and the screwing portion 42h.

  The lower end portion 64 h of the guide member 64 is curved toward the direction in which the opening / closing operation portion 66 (see FIGS. 1 and 7) provided outside the toilet body 2 is located. In the present embodiment, the opening / closing operation part 66 is provided on the upper part of the toilet body 2 and the second end 63b of the ball chain 63 is disposed so as to extend above the toilet body 2, so that the lower end of the guide member 64 64h curves upward. As described above, the guide member 64 is moved in the direction in which the ball chain 63 moves to rotate the flapper 52 and in the direction in which the second end 63 b of the ball chain 63 is pulled outward of the toilet body 2. The route of the ball chain 63 is guided.

  The urging member 55 is a coil spring. The biasing member 55 biases the flapper 52 so that the flapper 52 keeps the toilet drainage path 4 closed when the valve is closed. The biasing member 55 rotates when the flapper 52 is closed, and when the head pressure on the flapper 52 due to the accumulated water of the cleaning water exceeds a predetermined value, the flapper 52 rotates and the inner wall 42i below the toilet drainage path 4 is rotated. The biasing force is set so as to form a gap that allows water to flow between the step portion 42e and the flapper 52. The urging force of the urging member 55 will be described later.

  The locking portion 7 has a knock mechanism that holds the ball chain 63 at a predetermined pulling position. The locking part 7 is provided on the upper side of the toilet body 2 where the gripping part 63 d of the ball chain 63 is arranged. FIG. 8 is an exploded view of the locking portion 7. The locking portion 7 includes a rotor 71, a cylindrical portion 72, and a knock cam 73.

  The rotor 71 is a cylindrical ring member provided with a through hole (not shown) on the central axis, and a ball chain 63 is inserted through the through hole. On the outer peripheral surface of the rotor 71, three convex portions 71a are formed at equal intervals. As shown in FIG. 8, the convex portion 71 a is provided so that a substantially triangular flat plate protrudes from the outer peripheral surface of the rotor 71. The convex portion 71a has a triangular shape having a first side 71b, a second side 71d, and a third side 71e. The first side 71 b is a side that is parallel to the axial direction of the rotor 71 (the direction in which the ball chain 63 extends) and is substantially equal to the height of the rotor 71. The upper side connecting the both ends of the first side 71b and the apex 71c located at the approximate center in the height direction of the rotor 71 is defined as a second side 71d, and the lower side is defined as a third side 71e.

  The rotor 71 is sandwiched between a pair of retaining rings 74 provided on the upper and lower sides. The pair of retaining rings 74 and 74 are fixed to the ball chain 63 in contact with the upper surface or the lower surface of the rotor 71. Therefore, the rotor 71 sandwiched between the pair of retaining rings 74 and 74 is configured to be immovable in the longitudinal axis direction with respect to the ball chain 63 and to be rotatable about the ball chain 63.

  The cylinder part 72 is a cylinder member having an insertion hole 72a penetrating in the vertical direction, and the upper end part has a large diameter part 72c thicker than the lower end part. The insertion hole 72a has an opening area through which the rotor 71 and the pair of retaining rings 74, 74 can be inserted, and the opening area is reduced in diameter at the lower end 72d. As shown in FIGS. 8 and 9A, a guide groove 72b extending in the longitudinal axis direction from the lower end portion of the cylindrical portion 72 to the vicinity of the lower end portion of the large diameter portion 72c is formed on the inner peripheral surface of the insertion hole 72a. ing. The guide groove 72b is dimensioned so that the convex portion 71a can slide, and is formed in three places in the insertion hole 72a. Each guide groove 72b has a first inclined surface 72e and a first vertical surface 72f at the upper end.

  Knock cam 73 has a lid portion 73b and a knock cam portion 73c. The lid 73b is provided with an opening 73d through which the ball chain 63 can be inserted at the center of a substantially disk-shaped member. A fitting projection 73f is provided on the lower surface of the lid portion 73b.

  The knock cam portion 73c is provided at the center portion of the lower surface of the lid portion 73b so as to protrude downward. The knock cam portion 73c is provided around the opening 73d of the lid portion 73b so as to be along the inner periphery of the insertion hole 72a while being inserted into the insertion hole 72a, and has a second inclined surface 73a and a second vertical surface 73e at the lower end portion. Is formed.

  As shown in FIG. 9A, the locking portion 7 inserts a rotor 71 and a pair of retaining rings 74, 74 attached to the ball chain 63 into the insertion hole 72a from above the cylindrical portion 72, so that the knock cam The part 73c is inserted into the insertion hole 72a. The lid portion 73 b is fixed to the cylinder portion 72 by fitting the fitting protrusion 73 f into an engagement hole 72 g provided on the upper surface of the cylinder portion 72. The lid portion 73b is fixed to the cylinder portion 72 so as not to rotate. At this time, the first inclined surface 72e of the cylindrical portion 72 and the second inclined surface 73a of the lid portion 73b are provided so as to be shifted in the circumferential direction. The ball chain 63 is provided so as to be movable in the longitudinal axis direction (vertical direction in FIG. 9A) in the insertion hole 72a. The rotor 71 and the pair of retaining rings 74, 74 are provided in the insertion hole 72a so as to be movable in the longitudinal axis direction between the bottom part of the lower end of the insertion hole 72a and the knock cam part 73c as the ball chain 63 moves. It has been.

  Next, operation | movement of the knock mechanism of the latching | locking part 7 is demonstrated using FIGS. 8-13. 9 to 13 show the operation of the locking portion 7 and the operation of the valve portion 5 corresponding to the operation of the locking portion 7.

  As shown in FIG. 9B, when the flapper 52 is in the valve open state, the rotor 71 is positioned at the lower end of the insertion hole 72a in the locking portion 7, as shown in FIG. 9A.

  When the flapper 52 is manually closed, when the user pulls the ball chain 63, as shown in FIG. 10A, the rotor 71 is pulled up to the lid portion 73b and reaches the upper portion of the insertion hole 72a. . At this time, the flapper 52 rotates in the direction of arrow F as shown in FIG. While the protrusion 71a of the rotor 71 slides in the guide groove 72b, the rotation of the rotor 71 is restricted. However, when the rotor 71 is pulled up to the upper portion of the insertion hole 72a and the convex portion 71a of the rotor 71 is disengaged from the guide groove 72b, the rotor 71 becomes rotatable. In the state where the ball chain 63 is pulled, the second side 71d of the convex portion 71a contacts the second inclined surface 73a of the knock cam portion 73c, so that the rotor 71 rotates in the right direction (the direction of arrow E in FIG. 9). . Subsequently, as shown in FIG. 11A, the first side 71b of the convex portion 71a contacts the second vertical surface 73e of the knock cam portion 73c, and the rotation of the rotor 71 is stopped. In this state, the movement of the ball chain 63 is restricted, so that the user can recognize that the ball chain 63 has been pulled by a predetermined amount, and stops pulling the ball chain 63.

  When the force pulled up by the ball chain 63 is released, as shown in FIG. 12A, the rotor 71 descends, the convex portion 71a comes into contact with the first inclined surface 72e of the cylindrical portion 72, and the first inclination Moving along the surface 72e, the rotor 71 rotates in the right direction. When the first side 71b contacts the first vertical surface 72f of the cylindrical portion 72, the rotation of the rotor 71 is restricted and the ball chain 63 is locked. As a result, the flapper 52 is kept closed as shown in FIG. Note that, in the state shown in FIGS. 12A and 12B, a traction force from the rotating spring 61 acts on the ball chain 63.

  Next, when opening the flapper 52, when the user pulls the grip part 63d of the ball chain 63 slightly to release it, the rotor 71 temporarily moves upward as shown in FIG. Then, the rotation restriction of the rotor 71 by the first vertical surface 72f of the cylindrical portion 72 is released, the rotor 71 rotates to the right, and the convex portion 71a enters the adjacent guide groove 72b. At this time, since the pulling force from the rotation spring 61 acts on the ball chain 63, the rotor 71 moves to the lower part of the insertion hole 72a. As a result, as shown in FIG. 13B, the flapper 52 is rotated in the direction of the arrow G to be opened.

  With the above configuration, the locking portion 7 can keep the flapper 52 in the valve open state or the valve closed state by an operation of moving the ball chain 63 by a predetermined distance.

  The flush toilet 1 has washing water supply means 9. The manual valve operating unit 81 is configured to be able to manually operate the cleaning water supply means 9 in order to allow the cleaning water to flow through the toilet bowl 3 and the drain pipe when there is no power supply such as during a power failure. The manual valve operation unit 81 is provided above the toilet body 2. The washing water supply means 9 and the manual valve operation unit 81 are known devices and are schematically shown in FIG. The user manually rotates the upper end portion 82 of the manual valve operation unit 81 around the longitudinal axis (in the direction of arrow D shown in FIG. 7), so that the cleaning water is supplied from the cleaning water supply means 9 to the toilet bowl 3. .

  As illustrated in FIG. 7, the manual valve operation unit 81 and the opening / closing operation unit 66 are disposed adjacent to each other. Here, as shown in FIGS. 5 and 7, the gripping portion 63 d has an opening at the center and can be fitted onto the rod-shaped upper end portion 82. The grip portion 63d also functions as an operation lever (grip portion) of the manual valve operation portion 81. When rotating the upper end portion 82 of the manual valve operating portion 81, the gripping portion 63d is fitted to the upper end portion 82 and the gripping portion 63d is rotated in the direction of arrow D. Note that the grip portion 63d is disposed in a state of being fitted to the upper end portion 82 in normal times.

  As shown in FIG. 1, an upper lid 21 that can be opened and closed is provided on the upper surface of the back side of the toilet body 2, and the manual valve operation portion 81 and the opening and closing operation portion 66 are covered with the upper lid 21.

Next, the operation | movement at the time of a power failure of the flush toilet 1 which concerns on this embodiment is demonstrated. FIG. 14 shows the operation of the valve unit 5 and the flow of washing water when washing the flush toilet 1 at the time of a power failure.
During normal operation (when energized), the flapper 52 is in a valve open state as shown in FIG. When cleaning the toilet bowl at the time of a power failure, the user opens the upper lid 21 and manually operates the manual valve operation unit 81 and the opening / closing operation unit 66.

  First, when the user rotates the gripping portion 63d disposed so as to be fitted to the upper end portion 82 by about 180 degrees counterclockwise, the supply of the cleaning water in the cleaning water supply means 9 is started, and FIG. Water is supplied into the toilet bowl 3 as shown in A). Subsequently, when the user lifts the grip portion 63d and pulls the ball chain 63 upward, the ball chain 63 is pulled while being in contact with the curved portion 64g of the upper guide 64b of the guide member 64. As a result, the lever 62 rotates in the direction of arrow B shown in FIG. 5, and the flapper 52 rotates in the direction of arrow C to close the valve and store water.

  At this time, when the end portion 53a of the flat plate portion 53 is in a closed state in contact with the stepped portion 42e, the ball chain 63 is temporarily locked by the knock mechanism of the locking portion 7 so as not to be pulled further. Is done. The user can feel that the gripper 63d feels a click and recognizes that the flapper 52 is closed. Further, since the ball chain 63 is locked to the locking portion 7, even when the user releases his / her hand from the gripping portion 63d, the valve closing state of the flapper 52 is maintained.

  The user visually confirms that a necessary amount of washing water is accumulated in the toilet bowl 3. When storing wash water in the toilet bowl 3, for example, when the user leaves the flush toilet 1, the wash water overflows from the upper part of the toilet bowl 3 when the amount of stored water is excessive. The urging member 55 acts to prevent the amount of water stored in the toilet bowl 3 from becoming excessive.

  When the flapper 52 is closed, the water head pressure with respect to the flapper 52 by the washing water when the washing water reaches a predetermined water level of the toilet bowl 3 is measured in advance. Based on the measurement result of the water head pressure, when the water head pressure with respect to the flapper 52 becomes a predetermined value or more, the urging member 55 is elastically deformed so that the lever 62 is slightly rotated in the direction in which the flapper 52 is opened. The elastic coefficient of the urging member 55 is set. Therefore, a gap is formed between the inner wall of the toilet drainage path 4 and the flapper 52 so that washing water of about 12 liters / minute at the maximum flows. By providing such an urging member 55, when the amount of water stored in the toilet bowl 3 exceeds a predetermined amount, the wash water is gradually discharged downstream from the flapper 52 of the toilet drainage path 4, and the toilet It is possible to prevent the washing water from overflowing from the upper part of the pot 3.

  As shown in FIG. 14B, when a sufficient amount of water is stored in the toilet bowl 3, the user lifts the grip 63d again and pulls the ball chain 63. At this time, by the above-described knock mechanism of the locking portion 7, the engagement of the rotor 71 with the guide groove 72 b is released to rotate to the right, and the ball chain 63 is pulled by the rotating spring 61, so that the rotor 71 is rotated. Also descends to the lowest part of the cylinder part 72. As a result, the flapper 52 is opened. Therefore, the ball chain 63 is released from the locked state by pulling the ball chain 63 a little, and the flapper 52 can be returned to the valve open state.

  When the flapper 52 returns to the valve open state, as shown in FIG. 14 (C), the washing water flows into the toilet drainage passage 4 and siphon phenomenon occurs, and the washing water flows from the toilet bowl 3 as in the normal state. It flows to the drain pipe side. When the user turns the gripping portion 63d fitted to the upper end portion 82 of the manual valve operating portion 81 about 180 degrees clockwise to stop the supply of the cleaning water in the cleaning water supply means 9, FIG. As shown, the toilet bowl cleaning is completed. The user closes the upper lid 21.

  In the flush toilet 1 according to the present embodiment, since the valve portion 5 is provided in the toilet drainage path 4, the position of the drain pipe provided in the installation location of the flush toilet 1 is provided on the floor (floor It is not necessary to change the configuration of the valve unit 5 even if it is provided on the wall (drainage toilet) or on the floor (floor drainage toilet). Therefore, there are many parts that can be shared by the floor drainage toilet and the floor drainage toilet, and versatility can be improved.

  According to the flush toilet 1 of this embodiment, the flapper 52 can be urged by the urging member 55 and the state where the flow path of the toilet drainage path 4 is closed can be maintained. Further, as a result of accumulating wash water in the toilet bowl 3 in a valve-closed state, when the water head pressure on the flapper 52 exceeds a predetermined value, the flapper 52 rotates and the inner walls 42i, 42e of the toilet drainage path 4 The biasing force of the biasing member 55 is set to such an extent that a gap is formed between the flapper 52 and the flapper 52. For this reason, when the wash water in the toilet bowl 3 exceeds a predetermined amount, excess wash water can be drained from the gap formed between the inner walls 42i, 42e of the toilet drainage path 4 and the flapper 52. As described above, since the urging member 55 can control the valve closing state and the state of draining excess washing water, the washing water in the toilet bowl 3 can be controlled without a power source. Therefore, it is possible to prevent the washing water supplied into the toilet bowl 3 from overflowing from the upper opening of the toilet bowl 3 without using an emergency power source or the like during a power failure.

  According to the flush toilet 1 of the present embodiment, since the valve body 42 is an integrally formed member, the toilet drainage path 4 (drainage pipe) has no joints between members. Therefore, it is possible to prevent sewage and filth from adhering to the toilet drainage path 4.

  According to the flush toilet 1 of this embodiment, the flapper 52 can be manually rotated around the rotation shaft 51 by providing the rotation operation unit. Therefore, the wash water can be stored in the toilet bowl 3 without using an emergency power source or the like at the time of a power failure.

  According to the flush toilet 1 of the present embodiment, since the toilet drainage path 4 and the flapper 52 are excellent in molding and can be reduced in weight, the structure in which the flapper 52 is closed by the biasing member 55, and the toilet drainage path The structure which forms the clearance gap S between the inner wall 42i of 4 and the flapper 52 can be manufactured easily.

As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.
In addition, the constituent elements shown in the above-described embodiments and modifications can be combined as appropriate.

  For example, the valve portion may be provided with a seal portion (not shown) at the peripheral portion 53b of the surface where the flapper 52 faces the inner wall of the toilet drainage path 4 when the valve is opened. According to this configuration, when the valve is opened, the gap between the flapper 52 and the inner wall of the toilet drainage path 4 is kept watertight, and sewage and dirt are prevented from flowing between the flapper 52 and the inner wall of the toilet drainage path 4. be able to.

  In this embodiment, although the example which has arrange | positioned the valve part main body 42 to the top part 4c and the descent | fall part 4d was shown, the valve part main body 42 should just be provided in the toilet drainage path. For example, the valve body is provided between the water reservoir and the drain socket, provided in the region of the top and the lower part from the middle of the ascending part, and flowing water that curves at a position including a part of the ascending part and the top and the lower part. The structure in which a pipe part is formed may be sufficient.

  The long member is not limited to the ball chain, and may be a long member having such a strength that the rotating shaft is rotated by pulling from the outside of the toilet body, for example, a wire, a chain, or the like. May be.

  In this embodiment, the example which provides the three convex parts 71a and the three guide grooves 72b in the latching | locking part 7 was shown, However, There should just be two convex parts 71a and the guide grooves 72b, and it is not limited to three.

  In the present embodiment, an example in which the locking portion 7 has a knock mechanism is shown, but the locking portion is not limited to this structure. For example, a configuration in which a hook capable of engaging and disengaging the ball chain is provided in the vicinity of the operation unit and the rotation shaft, and the ball chain is pulled and locked to the hook may be employed.

  In the present embodiment, the locking portion 7 is provided on the upper side of the toilet body 2 where the gripping portion 63d of the ball chain 63 is disposed, but the locking portion 7 is provided at an arbitrary position on the path of the long member. It only has to be done.

In this embodiment, although the example which provides the latching | locking part 7 was shown, the latching | locking part 7 is not an essential structure.
In this embodiment, although the example which used the coil spring as the urging | biasing member 55 was shown, the kind of spring is not ask | required.

  By providing the enlarged portion 42d, the connection portion 5c between the flapper 52 and the rotating shaft 51 can be provided in a region that does not interfere with the flowing water region of the toilet drainage path 4, thereby preventing sewage and dirt from adhering during flowing water. Can do. In this embodiment, although the example which provided the enlarged part 42d in the flowing water pipe part 42a was shown, the enlarged part is not an essential structure in order to open and close the flow path of the toilet drainage path 4 in a non-energized state.

  In the present embodiment, an example in which the step portion 42e is provided in the lower portion of the water flow pipe portion 42a is shown. However, the step portion 42e is not an essential configuration, and the flapper can stop water contact with the inner wall of the water flow pipe portion 42a. I just need it.

  In the present embodiment, an example in which the opening / closing operation unit 66 is provided on the upper part of the toilet body 2 is shown, but the installation position of the opening / closing operation unit 66 is not limited to the upper part. For example, the side of the toilet body 2 may be used. At this time, the guide member 64 may form a long member guide path according to the installation position of the opening / closing operation unit 66.

  The guide member 64 shown in the present embodiment is merely an example, and may be any member that can guide the path of the long member, such as a cylindrical member, and can protect the lever and the long member in a protective manner.

1 Flush toilet 3 Toilet bowl 4 Toilet drainage channel (drainage line)
5 Valve part 10 Drain socket (drain pipe)
51 Rotating shaft 52 Flapper 55 Biasing member

Claims (3)

Toilet bowl,
A drainage conduit that communicates with the toilet bowl and the drain socket and into which wash water flows from the toilet bowl,
A rotation shaft provided in the drainage pipe and a flapper connected to be rotatable around the rotation axis, and a valve portion for opening and closing the drainage pipe;
An urging member that is connected to the pivot shaft and urges the flapper to keep the drain pipe line closed; and
A locking portion that keeps the flapper in an open state in which the drain pipe is opened;
With
The valve portion can be switched to be held in the valve open state by the locking portion when energized, and to be held in the valve closed state by the biasing member when not energized,
The valve portion is configured to rotate between the inner wall of the drain pipe and the flapper when the water head pressure with respect to the flapper by the washing water exceeds a predetermined value when the flapper is closed. A flush toilet, wherein the biasing force of the biasing member is set so as to form a possible gap. Flushing toilet of claim 1, further comprising a rotation operating part for rotating the rotating axis of the flapper such that the valve unit is put into the open state manually. The flush toilet bowl according to claim 1 or 2, wherein a portion of the drainage pipe where the flapper is provided and the flapper are made of resin.

Images