JP2018071130A - Drain plug device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize operation of a drain plug device and to improve cleanability.SOLUTION: A drain plug device of the present invention is composed of a drain plug 1, a pipe 5, a valve member 15, an operation part, a transmission part 25, and a lifting part 30. In the drain plug device, operation applied to the operation part is transmitted to the lifting part 30 via the transmission part 25, and a drain port 2 is opened/closed by the valve member 15 pushed up by the lifting part 30. The pipe 5 includes a cylindrical housing part 9 where the lifting part 30 is forward/backward movably set in a bent part 7, and the cylindrical housing part 9 is provided with a step-like engaged part 35. Also, a C-shaped ring-like engagement part 40 is attached to a periphery of the lifting part 30, and in a lifted state of the lifting part 30 to the highest position, engagement of the engagement part 40 to the engaged part 35 prevents unexpected drop of the valve member 15. Also, an upper end of the lifting part 30 becomes flush with a bottom face 8 in a lifted state of the lifting part 30, and in cleaning time, an inner peripheral face of the drain pipe becomes smooth.SELECTED DRAWING: Figure 3

Description

The present invention relates to a drain plug device that operates a valve member attached to a drain port to open and close the drain port.

  As a conventional drain plug device, as disclosed in Patent Document 1, a structure is known in which a release wire is used as a transmission member, and a drain opening is opened and closed by pushing up a valve body from below. In such a drain plug device, the operation portion and the release wire are interlocked, and by pushing the operation portion, the inner wire inside the release wire advances toward the valve member side, and at the end of the release wire. The formed lifting part protrudes to push up and raise the valve member. At this time, when the packing fitted around the valve member is separated from the periphery of the drainage port, the drainage port is opened and the wastewater inside the tank body can be discharged. On the other hand, when the operating part is pulled up, the inner wire is retracted toward the operating part, and the elevating part is also lowered. At this time, the valve member is lowered by its own weight, and the drainage port is closed by the packing coming into contact with the periphery of the drainage port. As described above, the drain plug device is a device that operates opening and closing of the drain port by applying an operation to the operation unit.

Japanese Patent Laid-Open No. 10-227053

The drain plug device described in Patent Document 1 has a structure in which the elevating part is arranged directly below the valve member and pushes up the valve member directly. Therefore, when an impact is applied to the raised valve member from above, there is a problem that the valve member and the lifting / lowering portion are lowered. In addition, when a large amount of drainage occurs and the siphon phenomenon occurs due to the drainage flow path downstream from the drainage port being filled, the valve member is pulled in by the negative pressure associated with the phenomenon, and the valve member and the lifting part are There was a problem of going down. As a method for preventing the valve member from descending unexpectedly, it is possible to incorporate a lock mechanism such as a known thrust lock into the drain plug device, but the lock mechanism has a complicated structure and increases manufacturing costs. In addition, there are many malfunctions due to the lock mechanism. In addition, the drain plug device using a thrust lock or the like has a limited operation method for the operation unit, such as only a pushing operation or only one direction of rotation.
Further, the drain plug device as described above has a problem that the elevating part protrudes into the drainage flow path and it is difficult to clean.

  In view of the above problems, an object of the present invention is to stabilize the operation of the drain plug device and improve the cleaning property.

The present invention according to claim 1 for solving the above-mentioned problem, a drain port provided on the bottom surface of the tank body,
A drainage pipe having a drainage channel continuous from the drainage port;
A valve member for opening and closing the drain port;
An operation part for operating the operation of the valve member via the transmission part by a push-pull operation;
An elevating part that operates by an operation applied to the operating part and raises and lowers the valve member;
A storage cylinder portion in which the elevating portion is disposed so as to be able to advance and retreat; and
It consists of a locking part and a locked part, and has a locking structure that holds the valve body in an elevated state,
At least one of the locking portion and the locked portion has a protruding portion that protrudes toward the other, and the other is a drain plug device that is locked to the protruding portion.

In the present invention according to claim 2, the storage cylinder part is formed in a drain pipe,
The locking structure is
A locking part provided in the elevating part;
The drain plug device according to claim 1, comprising a locked portion provided in the storage cylinder portion.

According to a third aspect of the present invention, the locking portion is
While having a protruding portion that protrudes from the elevating part toward the storage cylinder part,
The drain plug device according to claim 1 or 2, wherein the drain plug device is locked with the locked portion by being deformed by pressure from the outside.

  According to a fourth aspect of the present invention, in the drain plug device according to any one of the first to third aspects, the locking portion is a substantially C-shaped ring body in the axial direction. is there.

  The fifth aspect of the present invention is the drain plug device according to any one of the first to fourth aspects, wherein the locking portion is made of a soft member.

  The drain plug apparatus according to any one of claims 1 to 5, wherein the operation portion is attached so as to be pushed and pulled in a substantially horizontal direction. It is.

In the above-described present invention, in the drain plug device that operates by pushing and pulling operation, it is possible to prevent the valve member from being unexpectedly lowered and to stabilize the operation of the device.
Further, as in the present invention according to claim 2, by forming the locked portion in the storage cylinder portion, it becomes possible to smooth the inner peripheral surface of the drainage pipe at the time of cleaning. improves.
In addition, as described in claims 3 to 5, it is possible to reduce the cost of the apparatus by using a locking portion as a C-shaped ring or a soft member.
And since this invention can prevent the enlargement of an operation part, as shown in Claim 6, especially in the drain plug device attached so that an operation part may be pushed and pulled in a substantially horizontal direction, Useful.

It is a reference figure which shows the construction state of the drain plug apparatus which concerns on 1st embodiment of this invention. It is sectional drawing which shows the drain plug apparatus of this invention. It is sectional drawing which shows the state which the valve member is falling. It is sectional drawing which shows the state which the valve member is raising. (A) It is an expanded sectional view which shows the state of the latching structure in the state of FIG. (B) It is an expanded sectional view which shows the state of the latching structure in the state of FIG. It is (a) sectional drawing (b) axial direction view which shows a latching | locking part. It is a reference figure which shows the construction state of the drain plug apparatus which concerns on 2nd embodiment of this invention. It is sectional drawing which shows the drain plug apparatus of this invention. It is sectional drawing which shows the state which the valve member is falling. It is sectional drawing which shows the state which the valve member is raising. (A) It is an expanded sectional view which shows the state of the latching structure in the state of FIG. (B) It is an expanded sectional view which shows the state of the latching structure in the state of FIG. It is (a) sectional drawing (b) axial direction view which shows a latching | locking part. It is sectional drawing which shows the drain plug apparatus which concerns on 3rd embodiment of this invention. It is sectional drawing which shows the state which the valve member is falling. It is sectional drawing which shows the state which the valve member is raising. (A) It is an expanded sectional view which shows the state of the latching structure in the state of FIG. (B) It is an expanded sectional view which shows the state of the latching structure in the state of FIG.

   Hereinafter, the drain plug device of the present invention will be described with reference to the drawings. The following description is for facilitating understanding of the embodiment, and the present invention is not limited and understood by this.

   Below, 1st embodiment of this invention is described using FIG. 1 thru | or FIG.

  As shown in FIG. 1, the drain plug device of the present invention is attached to a tank body 100 and includes a drain plug 1, a pipe 5, a valve member 15, an operation unit 20, a transmission unit 25, and an elevating unit 30. In the following description, the term “drainage pipe” will be used when referring to a pipe itself having a drainage channel inside, such as the drain plug 1 and the pipe 5. Further, the present invention is provided with a locking structure including a locking portion 40 and a locked portion 35 as a structure for maintaining the raised state of the valve member 15.

  The tank body 100 is a box-shaped wash bowl placed on the cabinet 200, and has openings on the bottom and side surfaces. A drain plug 1 is attached to the opening on the bottom side, and a drain port 2 for discharging hot water stored in the tank body 100 is formed. As shown in FIG. 2, a valve member 15 is disposed at the drain port 2, and hot water is stored in the tank body 100 by moving the valve member 15 up and down by an operation applied to the operation unit 20. It is possible. On the other hand, an overflow drain plug 4 is attached to the opening formed on the side surface of the tank body 100 and is connected to the branch pipe portion 11 on the downstream side of the drain port 2 through a bellows-like flexible pipe. The flow path continuous from the overflow drain plug 4 functions as an overflow flow path for discharging excess water from the tank body 100 when hot water is stored up to a predetermined water level relative to the tank body 100.

  The drain plug 1 is a cylindrical drain pipe that forms a drain channel inside, and has a flange 3 formed from the outer periphery of the upper end to the outside, and a pipe 5 that continues to the sewage is attached to the lower end. ing. The drain plug 1 is attached by sandwiching an opening peripheral edge formed on the bottom surface of the tank body 100 by a flange 3 and a nut through packing, and the upper end of the drain plug 1 functions as a drain port 2 in the attached state. Then, hot water or hair stored in the tank body 100 is discharged from the drain port 2.

The pipe 5 is an eccentric pipe, and is extended to the side from the main pipe part 6 including the bent part 7 and the straight pipe part 10 extending in the vertical direction from the upstream side and the downstream side of the bent part 7. It consists of a branch pipe part 11. The pipe 5 is connected to a drain trap (not shown) on the downstream side.
The bent portion 7 has a bottom portion 8 extending in a substantially horizontal direction, and a storage cylinder portion 9 is formed on the bottom portion 8. The bottom portion 8 extends to a position exceeding the center of the drain port 2, and a storage cylinder portion 9 is formed on the central axis of the drain port 2.
The storage cylinder portion 9 is a cylindrical hole portion suspended from the bottom portion 8 on the central axis of the drain port 2, and an elevating portion 30 described later is accommodated therein so as to be able to advance and retract. As shown in FIGS. 3 to 5, the storage cylinder portion 9 has a stepped locked portion 35 that protrudes toward the locking portion 40 inside. Here, the inner diameter of the storage cylinder portion 9 above the locked portion 35 is larger than the outer diameter of the locking portion 40 described later, and the inner diameter of the storage cylinder portion 9 below the locked portion 35 is the locking portion 40. Is smaller than the outer diameter. In addition, the storage tube portion 9 is connected to the lower end of the transmission portion 25.
The branch pipe part 11 is extended from the straight pipe part 10 on the downstream side of the bent part 7 toward the side, and is connected to the flexible pipe extended from the overflow drain plug 4. Thereby, the branch pipe part 11 merges the waste_water | drain which flowed in from the overflow flow path with the main pipe part 6. FIG.

The valve member 15 includes a valve lid 16 that opens and closes the drain port 2, a valve shaft 17 that is detachably fitted to the valve lid 16, and an eye plate 19 that supplements dust.
The valve lid 16 is a water stop member having a packing fitted around it, and moves up and down together with the valve shaft 17 during operation of the apparatus. When the valve lid 16 is in the lowered state, the packing contacts the periphery of the drain port 2 in a watertight manner, so that hot water can be stored inside the tank body 100. On the other hand, when the valve lid 16 is in the raised state, the hot water in the tank body 100 can be discharged to the downstream side through the drain plug 1 (drain port 2).
The valve shaft 17 is a metal cylindrical body, the upper end of which is fitted to the back surface of the valve lid 16 and passes through an opening formed at the center of the eye plate 19. The valve shaft 17 has a reduced diameter portion 18 at the lower end. The outer diameter of the reduced diameter portion 18 is smaller than that of the storage cylinder portion 9 of the pipe 5, and the reduced diameter portion 18 is disposed inside the storage cylinder portion 9 when the valve member 15 is lowered as shown in FIG. 3. Has been.

The operation unit 20 includes a flange portion 21 having a flange portion, and an operation shaft 22 arranged so as to be capable of moving back and forth within the flange portion 21.
The flange portion 21 has a flange portion that protrudes outward, and a cylindrical portion in which the operation shaft 22 is disposed, and a nut disposed on the back side of the back plate 201 that is the side wall of the cabinet 200 and a male portion on the outer periphery of the cylindrical portion. Screws are screwed together, and the back plate 201 is sandwiched between the collar portion and the nut. Therefore, most of the cylindrical portion of the flange portion 21 is disposed on the back side of the cabinet 200. Further, as shown in FIG. 2, the flange portion 21 is attached so that the central axis thereof is in a substantially horizontal direction, and an operation shaft 22 is disposed therein.
The operation shaft 22 includes a knob portion 23 that can be directly pushed and pulled by a user at one end, and an inner wire 27 is connected to the other end. When the operation shaft 22 is pushed and pulled, Based on this operation, the inner wire 27 can be advanced and retracted in the outer tube 26. The operation shaft 22 is attached to the back plate 201 of the cabinet 200 by the flange portion 21 and is attached in a direction in which the central axis is substantially horizontal so as to extend from the back plate 201 toward the user side. .

  The transmission unit 25 is a release wire composed of an outer tube 26 that is a resin tube and an inner wire 27 that is a metal stranded wire. The outer tube 26 has an inner wire 27 slidably disposed therein, and has one end fixed to the flange portion 21 and the other end fixed to the pipe 5. On the other hand, one end of the inner wire 27 is attached to the operation shaft 22 and the other end is attached to the elevating unit 30, and the inner wire 27 can be advanced and retracted in the outer tube 26 as the operation shaft 22 is pushed and pulled. Accordingly, when a pushing operation is applied to the operation unit 20, the inner wire 27 slides toward the drain port 2, and the drain port 2 side end projects from the outer tube 26. On the other hand, when a pull-in operation is applied to the operation unit 20, the inner wire 27 slides toward the operation unit 20, and the protruding end portion on the drain port 2 side is housed in the outer tube 26.

The elevating part 30 is a rod-shaped member connected to the end part of the inner wire 27 and is arranged so as to be able to be raised and lowered within the storage cylinder part 9 of the pipe 5. The elevating unit 30 has a packing and a locking unit 40 attached to the outer periphery.
As shown in FIG. 6, the locking portion 40 has a substantially triangular shape in cross section and is a substantially C-shaped ring body having a notch portion, and its outer periphery protrudes toward the locked portion 35. ing. The locking portion 40 can be deformed so as to contract toward the center of the elevating portion 30 when pressure is applied from the outside toward the center.
Here, as shown in FIG. 4 or FIG. 5B, when the elevating part 30 is raised to the maximum, the upper end thereof is arranged at a position flush with the bottom part 8 of the pipe 5. Therefore, the inner peripheral surface of the drainage pipe is smooth in a state where the elevating part 30 is raised to the maximum. At this time, the locking portion 40 is positioned above the locked portion 35, and the outer diameter thereof is larger than the inner diameter of the locked portion 35. On the other hand, when the elevating part 30 is lowered to the maximum, the upper end of the elevating part 30 is accommodated in the storage cylinder part 9, and the locking part 40 is disposed below the locked part 35 by contracting. .

The operation of the drain plug device comprising the above members is as follows.
As shown in FIG. 3, in a state where the valve member 15 is lowered, the operation shaft 22 protrudes toward the user side, and the elevating part 30 is arranged at a position where the upper end is below the bottom part 8. Yes. At this time, the locking portion 40 is disposed below the locked portion 35, and pressure is applied from the outside by the inner peripheral surface of the storage cylinder portion 9, so that the lifting and lowering portion is as shown in FIG. 30 is in a contracted state toward the center. Further, the valve shaft 17 is in a state where the reduced diameter portion 18 is inserted into the storage tube portion 9.
When the user pushes the operation shaft 22 from the state where the valve member 15 is lowered, the inner wire 27 connected to the end of the operation shaft 22 is moved to the drain port 2 side. Slide inside. At this time, as the inner wire 27 slides, the elevating part 30 rises in the storage cylinder part 9 and pushes up the valve shaft 17 to raise the valve member 15. As shown in FIG. It becomes an open state. Further, the upper end of the elevating part 30 is flush with the bottom part 8, and the inner surface of the bottom part 8 is smooth. Therefore, when the operator removes the valve member 15, the inside of the drain pipe can be easily cleaned. Further, as the elevating part 30 is raised, the locking part 40 is also lifted in the storage cylinder part 9, and when the locking part 40 reaches above the locked part 35, the locking part 40 becomes its own. It expands by elastic force, and its outer diameter becomes larger than the inner diameter of the locked portion 35 as shown in FIG. Therefore, even if the valve member 15 is about to descend, the locking portion 40 is locked to the locked portion 35, thereby preventing the valve member 15 from being unexpectedly lowered.

  When the user pulls in the operation shaft 22 from the state in which the valve member 15 is raised, the inner wire 27 slides toward the operation unit 20, and the elevating unit 30 is moved to the storage cylinder unit 9. While descending, the valve member 15 descends by its own weight. At this time, the drainage port 2 is closed by the packing fitted around the valve lid 16 being in watertight contact with the periphery of the drainage port 2. Further, as the elevating part 30 is lowered, the locking part 40 is also lowered in the storage cylinder part 9 and comes into contact with the locked part 35. When the elevating part 30 continues to descend further, the locking part 40 is compressed by the locked part 35, and the locking part 40 contracts toward the center of the lifting part 30 as shown in FIG. . And when the outer diameter of the latching | locking part 40 becomes smaller than the internal diameter of the to-be-latched part 35, the latching | locking part 40 can descend | fall to a predetermined position beyond the to-be-latched part 35. FIG.

  When cleaning the drain plug device, the valve member 15 in the raised state is pulled up. At this time, the elevating part 30 is in the raised state, and its upper end is flush with the bottom part 8. Accordingly, the inner periphery of the drainage pipe is in a smooth state with no extra unevenness, and can be easily cleaned. In addition, although the packing is attached to the raising / lowering part 30, the said packing can scrape out the dust in the storage cylinder part 9 in accordance with the operation | movement of the raising / lowering part 30, besides performing the water stop in the storage cylinder part 9. FIG. .

  In the present invention, the valve member 15 is kept in the raised state by the locking structure including the locking portion 40 and the locked portion 35. Therefore, it is not necessary to incorporate a locking mechanism such as a thrust lock for maintaining the position of the valve member 15, and it can be provided at a low cost.

  The drain plug device according to the second embodiment will be described below with reference to FIGS.

  As shown in FIG. 7, the drain plug device of the present invention is attached to the tank body 100 and includes a drain plug 1, a pipe 5, a valve member 15, an operation unit 20, a transmission unit 25, and an elevating unit 30. In the following description, the term “drainage pipe” will be used when referring to a pipe itself having a drainage channel inside, such as the drain plug 1 and the pipe 5. Further, the present invention is provided with a locking structure including a locking portion 40 and a locked portion 35 as a structure for maintaining the raised state of the valve member 15.

  The tank body 100 is a box-shaped wash bowl placed on the cabinet 200, and has openings on the bottom and side surfaces. A drain plug 1 is attached to the opening on the bottom side, and a drain port 2 for discharging hot water stored in the tank body 100 is formed. As shown in FIG. 8, a valve member 15 is disposed in the drain port 2, and hot water is stored in the tank body 100 by moving the valve member 15 up and down by an operation applied to the operation unit 20. It is possible. On the other hand, an overflow drain plug 4 is attached to the opening formed on the side surface of the tank body 100 and is connected to the branch pipe portion 11 on the downstream side of the drain port 2 through a bellows-like flexible pipe. The flow path continuous from the overflow drain plug 4 functions as an overflow flow path for discharging excess water from the tank body 100 when hot water is stored up to a predetermined water level relative to the tank body 100.

  The drain plug 1 is a cylindrical drain pipe that forms a drain channel inside, and has a flange 3 formed from the outer periphery of the upper end to the outside, and a pipe 5 that continues to the sewage is attached to the lower end. ing. The drain plug 1 is attached by sandwiching the opening peripheral edge formed on the bottom surface of the tank body 100 by the flange 3 and the adapter 12 through packing, and the upper end of the drain plug 1 is a drain outlet 2 in the attached state. The hot water and hair stored in the tank body 100 are discharged from the drain port 2. Further, the drain plug 1 has an adapter 12 attached around it. The adapter 12 has a branch pipe portion 11 extending laterally, and the branch pipe portion 11 is connected to a flexible pipe extending from the overflow drain plug 4. Thereby, the branch pipe part 11 makes the waste_water | drain which flowed in from the overflow flow path merge with the drainage flow path which continues from the drain port 2. FIG.

The pipe 5 has an upper end connected to the drain plug 1, a straight tubular main pipe portion 6 connected to a drain trap (not shown) at the lower end, and a storage cylinder portion 9 extending substantially horizontally from the main pipe portion 6. It has.
As shown in FIGS. 10 to 11, the storage cylinder portion 9 accommodates the elevating portion 30 so that the elevating portion 30 can move forward and backward, and a stepped locked portion 35 protruding toward the elevating portion 30 at the outer end thereof. have. Here, the inner diameter of the storage tube portion 9 at the outer end of the storage tube portion 9 is larger than the outer diameter of the lock portion 40 described later, and is closer to the main pipe portion 6 side than the locked portion 35. The inner diameter of the storage cylinder portion 9 is smaller than the outer diameter of the locking portion 40. In addition, the storage tube portion 9 is connected to the end of the transmission portion 25 at the outer end.

The valve member 15 includes a valve lid 16 that opens and closes the drain port 2, a valve shaft 17 that is detachably fitted to the valve lid 16, and an eye plate 19 that supplements dust.
The valve lid 16 is a water stop member having a packing fitted around it, and moves up and down together with the valve shaft 17 during operation of the apparatus. When the valve lid 16 is in the lowered state, the packing contacts the periphery of the drain port 2 in a watertight manner, so that hot water can be stored inside the tank body 100. On the other hand, when the valve lid 16 is in the raised state, the hot water in the tank body 100 can be discharged to the downstream side through the drain plug 1 (drain port 2).
The valve shaft 17 is a metal cylindrical body, the upper end of which is fitted to the back surface of the valve lid 16 and passes through an opening formed at the center of the eye plate 19.

The operation unit 20 includes a flange portion 21 having a flange portion, and an operation shaft 22 arranged so as to be capable of moving back and forth within the flange portion 21.
The flange portion 21 has a flange portion that protrudes outward, and a cylindrical portion in which the operation shaft 22 is disposed, and a nut disposed on the back side of the back plate 201 that is the side wall of the cabinet 200 and a male portion on the outer periphery of the cylindrical portion. Screws are screwed together, and the back plate 201 is sandwiched between the collar portion and the nut. Therefore, most of the cylindrical portion of the flange portion 21 is disposed on the back side of the cabinet 200. Further, as shown in FIG. 8, the flange portion 21 is attached so that the central axis thereof is in a substantially horizontal direction, and the operation shaft 22 is disposed therein.
The operation shaft 22 includes a knob portion 23 that can be directly pushed and pulled by a user at one end, and an inner wire 27 is connected to the other end. When the operation shaft 22 is pushed and pulled, Based on this operation, the inner wire 27 can be advanced and retracted in the outer tube 26. The operation shaft 22 is attached to the back plate 201 of the cabinet 200 by the flange portion 21 and is attached in a direction in which the central axis is substantially horizontal so as to extend from the back plate 201 toward the user side. .

  The transmission unit 25 is a release wire composed of an outer tube 26 that is a resin tube and an inner wire 27 that is a metal stranded wire. The outer tube 26 has an inner wire 27 slidably disposed therein, and has one end fixed to the flange portion 21 and the other end fixed to the pipe 5. On the other hand, one end of the inner wire 27 is attached to the operation shaft 22 and the other end is attached to the elevating unit 30, and the inner wire 27 can be advanced and retracted in the outer tube 26 as the operation shaft 22 is pushed and pulled. Accordingly, when a pushing operation is applied to the operation unit 20, the inner wire 27 slides toward the drain port 2, and the drain port 2 side end projects from the outer tube 26. On the other hand, when a pull-in operation is applied to the operation unit 20, the inner wire 27 slides toward the operation unit 20, and the protruding end portion on the drain port 2 side is housed in the outer tube 26.

The elevating part 30 is a rod-shaped member connected to the end part of the inner wire 27 and is disposed so as to be able to advance and retract in the storage cylinder part 9 of the pipe 5 in a substantially horizontal direction. Further, the elevating part 30 has a packing and a locking part 40 attached to the outer periphery, and a lever part 28 is rotatably attached to the end part.
As shown in FIG. 12, the locking portion 40 is a substantially C-shaped ring body in the axial direction having a notch portion, and has an outer periphery protruding toward the locked portion 35. ing. The locking portion 40 can be deformed so as to contract toward the center of the elevating portion 30 when pressure is applied from the outside toward the center.
Here, as shown in FIG. 10 or FIG. 11 (b), when the retraction operation is applied to the operation unit 20 and the valve member 15 is in the raised state, the elevating unit 30 is on the outer end side of the storage cylinder unit 9. In addition, the locking portion 40 is disposed on the outer end side of the storage cylinder portion 9 with respect to the locked portion 35. At this time, no pressure is applied to the locking portion 40, and the outer diameter thereof is larger than the inner diameter of the locked portion 35. On the other hand, when the elevating part 30 is disposed on the main pipe part 6 side, the locking part 40 is disposed closer to the main pipe part 6 than the locked part 35 by contracting.
The lever portion 28 is rotatably attached to the elevating portion 30 and pushes up the mounted valve member 15.

The operation of the drain plug device comprising the above members is as follows.
As shown in FIG. 9, in the state where the valve member 15 is lowered, the operation shaft 22 is pushed into the back plate 201 side, and the elevating part 30 is disposed on the main pipe part 6 side. At this time, the locking part 40 is arranged on the main pipe part 6 side with respect to the locked part 35, and pressure is applied from the outside by the inner peripheral surface of the storage cylinder part 9, so as shown in FIG. The state is contracted toward the center of the elevating unit 30.
When the user pulls in the operation shaft 22 from the state in which the valve member 15 is lowered, the inner wire 27 connected to the end of the operation shaft 22 is moved to the outer tube 26 toward the operation portion 20 side. Slide inside. At this time, the elevating part 30 moves toward the outer end side of the storage cylinder part 9 by sliding of the inner wire 27, and the valve part 15 is raised by rotating the lever part 28, as shown in FIG. In addition, the drain port 2 is in an open state. Further, as the elevating part 30 moves, the locking part 40 also moves toward the outer end side of the storage cylinder part 9, and the locking part 40 is closer to the outer end side of the storage cylinder part 9 than the locked part 35. Then, the locking portion 40 is expanded by its own elastic force, and its outer diameter becomes larger than the inner diameter of the locked portion 35 as shown in FIG. Therefore, even if the valve member 15 is about to descend, the locking portion 40 is locked to the locked portion 35, thereby preventing the valve member 15 from being unexpectedly lowered.

  When the user pushes the operation shaft 22 into a state where the valve member 15 is raised, the inner wire 27 slides toward the drain port 2, and the elevating part 30 is moved to the storage cylinder part 9. While sliding toward the center of the main pipe portion 6, the valve member 15 is lowered by its own weight. At this time, the drainage port 2 is closed by the packing fitted around the valve lid 16 being in watertight contact with the periphery of the drainage port 2. Further, as the elevating part 30 moves, the locking part 40 also slides inside the storage cylinder part 9 toward the center of the main pipe part 6 and comes into contact with the locked part 35. And if the raising / lowering part 30 continues a movement further, the latching | locking part 40 will be compressed by the to-be-latched part 35, and the latching | locking part 40 will shrink | contract toward the raising / lowering part 30 center. And when the outer diameter of the latching | locking part 40 becomes smaller than the internal diameter of the to-be-latched part 35, the latching | locking part 40 exceeds the to-be-latched part 35, and to a predetermined position like Fig.11 (a). It becomes possible to slide.

In the first and second embodiments, the locking portion 40 is a ring body having a substantially C-shape in plan view. However, as in the third embodiment shown in FIGS. It may be a packing or the like. The locking portion 40 in the third embodiment has an outer diameter formed larger than the inner diameter of the locked portion 35, and the outer end protrudes toward the locked portion 35, but toward the center direction. When pressure is applied from the outside, it is deformed toward the center of the lifting unit 30 and can be contracted.
In the drain plug device according to the third embodiment, the locking portion 40 is disposed below the locked portion 35 when the valve member 15 is lowered. At this time, the locking portion 40 is applied with pressure from the outside by the inner peripheral surface of the storage cylinder portion 9 and is in a contracted state toward the center of the elevating portion 30 as shown in FIG. Then, when the valve member 15 (lifting part 30) is raised and the locking part 40 reaches above the locked part 35, the locking part 40 is restored by its own elastic force, and FIG. As described above, the outer diameter is larger than the inner diameter of the locked portion 35. Therefore, even if pressure is applied to the valve member 15 from above when the valve member 15 is in the raised state, or even if pull-in occurs from the downstream side due to siphoning or the like, the locking portion 40 is engaged with the locked portion 35. By being locked, the valve member 15 can be prevented from descending unexpectedly.
On the other hand, when the elevating part 30 is lowered by the pulling operation with respect to the operation part 20, the elevating part 30 is pushed and shrunk by the locked part 35, and the locking part 40 contracts toward the center of the elevating part 30. And when the outer diameter of the latching | locking part 40 becomes smaller than the internal diameter of the to-be-latched part 35, the latching | locking part 40 can fall to a predetermined position beyond a step part.

  Although the embodiments of the present invention are as described above, the present invention is not limited to the shapes of the above-described embodiments, and various shape modifications may be added without departing from the spirit of the invention.

  For example, in each embodiment, although the locking structure was arrange | positioned at the drain outlet side, you may arrange | position in the middle of a transmission part, the inside of an operation part, etc., The arrangement | positioning place is not limited.

  On the other hand, in each of the embodiments described above, the operation unit 20 is attached to the back plate 201 of the cabinet 200, but there is often no space for construction on the back side of the back plate 201. Therefore, when the locking structure is provided on the operation unit 20 side, the operation unit 20 is increased in size, and it may be difficult to secure a space for bending the release wire. However, when the locking structure by the locked portion 35 and the locking portion 40 is formed on the drain outlet 2 side as in the above embodiments, the operating portion 20 can be reduced in size, and the operating portion 20 Even if it is the drain plug apparatus of the structure attached to the backplate 201, since it can construct easily, it is more suitable.

  Moreover, in each embodiment, although all the tank bodies were wash bowls, a bathtub, a sink, etc. may be sufficient. In addition, although the drain plug device arranged so that the operation part protrudes substantially horizontally from the side wall of the bathtub or sink is known, the back side of the side wall is similar to the back side of the back plate of the cabinet. Therefore, the usable space is very narrow. Therefore, similarly to the above-described embodiments, it is possible to easily perform the construction by providing a locking structure on the drain outlet side as necessary.

  Moreover, in each said embodiment, although the to-be-latched part 35 was formed when the inner periphery of the storage cylinder part 9 protruded inside over the perimeter, the structure which protrudes only predetermined width may be sufficient. In addition, various shape changes may be added without departing from the gist of the invention, such as one or more convex shapes.

  Moreover, in each said embodiment, although the latching | locking part 40 and the to-be-latched part 35 have the protrusion part which protrudes toward the other mutually, the drain plug device of this invention is not restricted to the said structure. Absent. That is, only the locking portion 40 may have a protruding portion that protrudes toward the locked portion 35, and conversely, only the locked portion 35 protrudes toward the locking portion 40. You may have a protrusion part. For example, in the case of said 1st embodiment, the structure which the latching | locking part 40 latches directly with respect to the upper end of the storage cylinder part 9 may be sufficient.

DESCRIPTION OF SYMBOLS 1 Drain plug 2 Drain port 3 Gutter part 4 Overflow drain plug 5 Pipe 6 Main pipe part 7 Bent part 8 Bottom part 9 Storage cylinder part 10 Straight pipe part 11 Branch pipe part 12 Adapter 15 Valve member 16 Valve cover 17 Valve shaft 18 Reduced diameter part 19 Eyepiece 20 Operation part 21 Flange part 22 Operation shaft 23 Knob part 25 Transmission part 26 Outer tube 27 Inner wire 28 Lever part 30 Lifting part 35 Engagement part 40 Engagement part 100 Tank body 200 Cabinet 201 Back plate

Claims (6)

A drain outlet provided on the bottom of the tank body;
A drainage pipe having a drainage channel continuous from the drainage port;
A valve member for opening and closing the drain port;
An operation part for operating the operation of the valve member via the transmission part by a push-pull operation;
An elevating part that operates by an operation applied to the operating part and raises and lowers the valve member;
A storage cylinder portion in which the elevating portion is disposed so as to be able to advance and retract;
It consists of a locking part and a locked part, and has a locking structure that holds the valve body in an elevated state,
At least one of the locking portion and the locked portion has a protruding portion that protrudes toward the other, and the other is locked to the protruding portion. The storage cylinder part is formed in the drain pipe,
The locking structure is
A locking part provided in the elevating part;
The drain plug device according to claim 1, comprising a locked portion provided in the storage tube portion. The locking portion is
While having a protruding portion that protrudes from the elevating part toward the storage cylinder part,
The drain plug device according to claim 1 or 2, wherein the drain plug device is locked with the locked portion by being deformed by pressure from the outside. The drain plug device according to any one of claims 1 to 3, wherein the locking portion is a ring body that is substantially C-shaped when viewed in the axial direction. The drain plug device according to any one of claims 1 to 4, wherein the locking portion is made of a soft member. The drain plug device according to any one of claims 1 to 5, wherein the operation portion is attached so as to be pushed and pulled in a substantially horizontal direction.

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