JP2017172211A - Drain plug device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain plug device capable of further surely preventing leakage water of passing through the outer periphery of a movable surface.SOLUTION: A drain plug device 1 comprises: a plug cover; a main pipe part 35; a communication cylinder part 32 extending by branching off from the main pipe part 35; a pipe 3 having a seal water part 36 capable of storing seal water; a vertically moving part 5 vertically movable in the main pipe part 35; and a transmission body 8 for transmitting predetermined driving force to the vertically moving part 5. The transmission body 8 comprises an insertion object part 41 having a movable surface rotatable or reciprocatably movable along a fixed surface composed of an inner peripheral surface of the communication cylinder part 32. An annular movable seal member 41F for contacting with both is provided between the movable surface and the fixed surface, and is constituted so as to satisfy at least one of always positioning the whole seal part of the movable seal member 41F above an opening part 32D on the main pipe part 35 side in the communication cylinder part 32 and of always positioning the whole seal part of the movable seal member 41F above a seal water surface 37 in the seal water part 36.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a drain plug device provided with a plug lid for opening and closing a drain port of a tank body.

  The drain plug device is provided with a plug lid provided in a drain port of a tank body (for example, a bathtub or a washbasin), and opens and closes the drain port by moving the plug lid up and down.

  The drain plug device includes a support shaft that supports the plug lid, and a plug lid side mechanism (support mechanism) that holds the support shaft in a vertically movable state, and an operation member (for example, an operation button) It is generally known that the plug lid is moved up and down by transmitting the driving force due to the displacement of the above) to the support shaft by a predetermined transmission body.

  Further, in recent years, as a drain plug device, there is a pivotable rotation transmission part that constitutes a part of the transmission body, a support protrusion protruding from the rotation transmission part, and an annular outer peripheral wall part, and the plug lid It has been proposed to support a stopper lid or the like through a water-permeable member by a support protrusion (for example, see Patent Document 1). In the apparatus, the support protrusion extends in the vertical direction in the pipe and protrudes into the main pipe part through which the drainage flows, and the rotation transmitting part extends in a branching manner from the main pipe part in the pipe and has its own interior. The space is arranged on the inner periphery of the communication tube portion (attachment tube) communicating with the internal space of the main pipe portion. Then, the support protrusion moves up and down along with the operation of the transmission body (rotation of the rotation transmission unit), so that the water passage member, and thus the plug lid, moves up and down, and the drain opening is opened and closed. ing.

JP 2012-36558 A

  By the way, in the apparatus described in the above-mentioned patent document, there is a possibility that drainage flowing in the main pipe portion flows into the communication tube portion and water enters between the communication tube portion and the transmission body (rotation transmission portion). . Therefore, it is conceivable to dispose a movable seal member (a seal member corresponding to the movable portion) between the inner peripheral surface (fixed surface) of the communicating tube portion and the outer peripheral surface (movable surface) of the rotation transmitting portion.

  However, in the unlikely event that a minute breakage that can lead to water leakage occurs in the movable seal member, water leaks between the communicating cylinder part and the rotation transmitting part, that is, through the outer periphery of the movable surface. There is a possibility that sufficient water tightness cannot be secured.

  This invention is made | formed in view of the said situation, The objective is to provide the drain plug apparatus which can prevent more reliably the water leak which passed along the outer periphery of the movable surface.

  In the following, each means suitable for solving the above-described object will be described in terms of items. In addition, the effect specific to the means to respond | corresponds as needed is added.

Means 1. A plug lid for opening and closing the drain of the tank body;
Piping having a main pipe portion through which drainage from the drainage port flows;
A vertical movement part that is movable up and down in the main pipe part and moves the stopper lid up and down by its own vertical movement;
A drain plug device including a transmission body that transmits a driving force generated by displacement of a predetermined operation member to the vertical movement unit,
The pipe has a communicating cylinder part that branches and extends from the main pipe part and whose internal space communicates with the internal space of the main pipe part,
The transmission body rotates or reciprocates along a fixed surface which is an inner peripheral surface of the cylindrical member disposed on the inner peripheral surface of the communication tube portion or the inner periphery of the communication tube portion by displacement of the operation member. It has an insertion part comprising a movable surface that can move,
Between the movable surface and the fixed surface, an annular movable seal member that contacts both is provided,
The drain plug device characterized in that the entire seal portion of the movable seal member is always positioned above the opening on the main tube portion side in the communication tube portion.

  The “seal portion in the movable seal member” refers to a portion of the movable seal member that is in watertight contact with the movable surface and the fixed surface in order to prevent water leakage.

  According to the above means 1, the annular movable seal member (seal member corresponding to the movable portion) is provided between the movable surface and the fixed surface of the insertion portion that moves in accordance with the displacement of the operation member. The entire seal portion of the movable seal member is always positioned above the opening on the main tube portion side in the communication tube portion. Therefore, even if the water level in the pipe rises and water enters between the movable surface and the fixed surface, air remains between the water surface and the movable seal member, so the water level rises between the movable surface and the fixed surface. In general, water does not reach the movable seal member. In addition, even if there is a minute breakage that may lead to water leakage in the movable seal member due to use or the like, that is, even if a minute breakage that can cause air to escape occurs in the movable seal portion, the air will escape. Because it takes time, there is no such thing as water leakage immediately. Furthermore, even if water reaches the movable seal member, it becomes easy to draw water toward the opening located at a lower position than the movable seal member, and there is a relatively large amount of water around the movable seal member. The situation where it keeps doing does not occur easily. Combined with these effects, it is possible to effectively suppress the leakage of water through the outer periphery of the movable surface, thereby realizing excellent water tightness.

Mean 2. A plug lid for opening and closing the drain of the tank body;
A main pipe part through which the drainage from the drainage port flows, and a pipe having a sealing part in which the drainage water that has passed through the main pipe part flows and the sealed water is stored;
A vertical movement part that is movable up and down in the main pipe part and moves the stopper lid up and down by its own vertical movement;
A drain plug device including a transmission body that transmits a driving force generated by displacement of a predetermined operation member to the vertical movement unit,
The pipe has a communicating cylinder part that branches and extends from the main pipe part and whose internal space communicates with the internal space of the main pipe part,
The communicating cylinder part is provided with an upward part at least partially located above the opening on the main pipe part side of the communicating cylinder part and extending in a vertical direction or an oblique vertical direction,
The transmission body is rotated or reciprocated along a fixed surface that is an inner peripheral surface of a cylindrical member disposed on an inner peripheral surface of the upward portion or an inner periphery of the upward portion by displacement of the operation member. It has an insertion part comprising a movable surface that can move,
Between the movable surface and the fixed surface, an annular movable seal member that contacts both is provided,
The drain plug device, wherein the entire sealing portion of the movable sealing member is always positioned above the sealing surface of the sealing portion.

  The “sealed surface” refers to the water surface on the main pipe side of the sealed water when the maximum sealed water is stored in the sealed portion.

  There may be a sealing portion for storing the sealing water in the pipe. In this case, for example, if the sealing surface is set at a relatively close position to the bottom surface of the tank body due to the fact that the tank body is a bathtub with a lowered floor, etc., the movable body is movable with respect to the sealing water. At least a part of the seal member may be submerged. If it becomes such a structure, there exists a possibility that the amount of water leaks may increase when a micro breakage should arise in a movable seal member by any chance.

  In this regard, according to the above means 2, the movable seal member is disposed inside the upward portion, and the entire seal portion of the movable seal member is positioned above the sealing surface of the sealing portion. Therefore, normally, the sealed water does not reach the movable seal member, and even if the movable seal member is slightly damaged, water leakage does not occur immediately. Further, even if water reaches the movable seal member, it is easy to draw water toward the sealing surface at a position lower than the movable seal member, so that a large amount of water continues to exist around the movable seal member. Things are less likely to occur. Combined with these effects, it is possible to effectively prevent water from leaking through the outer periphery of the movable surface, and to obtain excellent water tightness.

  In addition, the structure of the said means 2 is easy to set the sealing surface to the position comparatively close with respect to the bottom face of a tank body, such as a bathtub made low flooring etc., for example, in the up-down direction from a sealing surface to a movable seal member. It is particularly effective when applied to a tank body in which the distance along it tends to be small.

  Means 3. The drain plug device according to means 2, wherein the whole sealing portion of the movable sealing member is always positioned above the opening.

  According to the above means 3, even if the water level in the pipe rises and water enters between the movable surface and the fixed surface, air remains between the water surface and the movable seal member. The rise of the water level is suppressed, and drainage does not normally reach the movable seal member. In addition, even if a minute breakage that may lead to water leakage occurs in the movable seal member, that is, even if a minute breakage that may cause air to escape occurs in the movable seal portion, it takes time for the air to escape. Therefore, there will be no immediate leakage of water. In addition, due to the configuration of the means 2, there is an effect such that normally sealed water does not reach the sealing member. Together, the probability of water leakage is extremely low, and better water tightness can be obtained.

  Means 4. The drain plug device according to any one of means 1 to 3, wherein the fixing surface is an inclined surface extending obliquely downward toward the opening side.

  According to the means 4, the fixed surface is an inclined surface extending obliquely downward toward the opening side. Accordingly, water becomes more difficult to reach the movable seal member, and even if water reaches the movable seal member, the water can be more easily drawn (flowed down) to the opening side. As a result, watertightness can be dramatically improved.

  Means 5. The drain plug device according to any one of means 1 to 4, wherein the movable surface is configured to rotate about its own central axis as a rotation axis in accordance with the displacement of the operation member.

  According to the means 5, the movable surface is configured to rotate with the displacement of the operation member. Therefore, the frictional force generated between the movable seal member and the fixed surface when transmitting the driving force can be made smaller than when the movable surface reciprocates. Thereby, the operativity can be improved.

Means 6. The communication tube portion is
A first tube portion extending from the main pipe portion;
A second portion extending from the end of the first tube portion opposite to the opening portion upward or obliquely upward toward a side away from the opening portion and extending in a direction different from the extending direction of the first tube portion. A drain plug device according to means 5, comprising a cylinder portion.

  In order to satisfy the requirements of the above means 1 etc. (the entire sealing portion of the movable sealing member is located above the opening, etc.), the entire communicating tube portion extends in a substantially horizontal oblique direction. In this case, it is necessary to make the communicating cylinder part extremely long, which may increase the size of the pipe.

  In this regard, according to the means 6, since the second cylinder portion extending upward or obliquely upward is provided following the first cylinder portion, the above-described requirements can be satisfied without making the communicating cylinder portion extremely long. It can be easily satisfied. Therefore, an increase in the size of the piping can be suppressed, and the degree of installation freedom can be improved and the manufacturing cost can be reduced.

Mean 7 The inserted portion is
A rotatable first component disposed inside the first tube portion;
A rotatable second component disposed inside the second cylindrical portion,
The first component and the second component are capable of transmitting rotational power to each other, and are connected in a state in which relative movement along the axial direction of the inserted portion is restricted,
In the state where the second constituent part is disposed inside the second cylindrical part, a regulation part is provided that restricts relative movement of the second constituent part along the axial direction of the second cylindrical part. The drain plug device according to claim 6.

  Note that “the state in which the relative movement along the axial direction of the inserted portion is restricted” is not only the case where the relative movement along the axial direction of the inserted portion is strictly restricted, but also the inserted portion. This includes a case in which relative movement is possible along the axial direction (for example, a slight amount of play provided between the two components).

  According to the means 7, when the relative movement of the second component part is restricted by the restricting part, the two component parts are connected in a state where the relative movement along the axial direction of the inserted part is restricted. For this reason, the first component portion is always arranged at a certain position along the axial direction of the first cylindrical portion, and further cannot move along the axial direction of the first cylindrical portion. Therefore, if the first component portion is designed so that it is finally disposed at a predetermined position (for example, a position where the amount of protrusion of the vertical movement portion with respect to the inner peripheral surface of the main pipe portion is appropriate), The first component is naturally arranged at the predetermined position without specially aligning the component, and does not move from the position along the axial direction of the first cylinder. Therefore, the installation work of the drain plug device can be performed more quickly and more accurately, and the workability related to attachment and replacement can be remarkably enhanced.

Means 8. The up-and-down moving part has a protruding shape that projects into the main pipe part from the end face on the main pipe part side in the first component part, supports a predetermined supported part, and rotates the inserted part. It is configured to move up and down while rotating,
The main pipe portion extends in the vertical direction,
The first cylinder part extends in a horizontal direction from the main pipe part,
The drain plug device according to means 6 or 7, wherein the second cylindrical portion extends obliquely upward toward a side away from the opening.

  The “horizontal direction” includes not only a strict horizontal direction but also a substantially horizontal direction.

  In the case where the vertically moving portion is formed to protrude from the end surface on the main tube portion side of the first component portion into the main tube portion and moves up and down by rotating the inserted portion, When the component is arranged in a pipe extending in the diagonally horizontal direction and the rotation axis of the first component is extended in the diagonally horizontal direction, the amount of protrusion of the vertically moving portion relative to the inside of the main pipe as the inserted portion rotates. Fluctuates. Therefore, it is necessary to make the vertically moving portion sufficiently long in order to support the supported portion more reliably even when the protruding amount becomes small. However, in this case, when the protruding amount is increased, the vertically moving portion is greatly protruded into the main pipe portion. For this reason, there is a risk that a problem such as foreign matter is likely to adhere to the vertically moving portion.

  In this respect, according to the means 8 described above, the first component portion is disposed in the first cylindrical portion extending in the horizontal direction and can be rotated by the rotation shaft extending in the horizontal direction. Therefore, even if the vertical movement part moves up and down with the rotation of the first component part, the protruding amount of the vertical movement part with respect to the main pipe part can be kept substantially constant. Therefore, the supported portion can be more reliably supported by the vertically moving portion without particularly increasing the length of the vertically moving portion. As a result, it is possible to more reliably prevent problems such as adhesion of foreign matter to the vertically moving portion.

  Means 9. Either of the means 6 to 8 characterized in that the inserted portion is configured to be insertable into the communicating tube portion from an opening of the second tube portion opposite to the first tube portion. The drain plug device described.

  According to the means 9, the inserted portion is inserted in the order of the first component portion and the second component portion from the opening opposite to the first tube portion in the second tube portion in the order of the first component portion and the second component portion. Thus, the inserted part can be arranged in the communicating cylinder part. Therefore, the installation work of the drain plug device can be performed more quickly, and the workability related to attachment and replacement can be further enhanced.

It is a partially broken front view of a drain plug device. It is a partially broken enlarged front view of the drain plug device. It is a partially broken front view of the unit for demonstrating attachment processes, such as a to-be-inserted part. It is a partially broken front view of piping etc. for explaining attachment processes, such as a penetration part. It is a cross-sectional schematic diagram which shows the state which the water level in piping went up. It is a partially broken front view of the drain plug device in a 2nd embodiment. It is a partially broken front view of the drain plug device in another embodiment.

Hereinafter, embodiments will be described with reference to the drawings.
[First Embodiment]
As shown in FIG.1 and FIG.2, the drain plug apparatus 1 is attached to the bathtub 100 as a tank body, the drain port member 2, the piping 3, the transmission mechanism body 4, the up-and-down moving part 5, A drain outlet device 6 is provided. The bathtub 100 includes a bottom wall portion 101 that constitutes the bottom surface thereof, and a drain outlet 102 is formed through the bottom wall portion 101.

  The drain port member 2 is inserted in the inner periphery of the drain port 102 and includes a cylindrical main body 21 and a flange 22 that protrudes from the upper end of the main body 21 to the outer periphery. A male screw portion 23 for attaching the pipe 3 to the bathtub 100 is formed on the outer periphery of the main body portion 21.

  The pipe 3 is connected to the bathtub 100 and mainly functions as a flow path for drainage that has passed through the drain port 102 (the inner periphery of the drain port member 2). The pipe 3 includes an inflow part 31, a communication cylinder part 32, a folded part 33, and an orthogonal part 34.

  The inflow portion 31 is a portion into which drainage from the drainage port 102 flows, and has a cylindrical shape extending in the vertical direction. A female screw portion 31 </ b> A capable of screwing the male screw portion 23 is formed on the inner periphery of the upper end portion of the inflow portion 31. The pipe 3 is attached to the bathtub 100 by screwing the male screw part 23 into the female screw part 31 </ b> A and sandwiching the bottom wall part 101 between the flange part 22 and the upper end part of the pipe 3. In the present embodiment, the annular seal member 9 is disposed between the upper end surface of the pipe 3 and the back surface of the bottom wall portion 101. With the screwing of the male screw portion 23 to the female screw portion 31A, the seal member 9 is It is in a state of being sandwiched between the pipe 3 and the bottom wall portion 101. Thereby, water leakage prevention between the piping 3 and the bottom wall part 101 is achieved.

  The communicating cylinder part 32 is a part where a to-be-inserted part 41 to be described later is arranged, extends in a branched manner from the inflow part 31, and has a bent cylindrical shape in which the internal space communicates with the internal space of the inflow part 31. In addition, in this embodiment, the communication cylinder part 32 is comprised by connecting several members in series.

  The communicating tube portion 32 extends in the horizontal direction, is connected to the inflow portion 31, has a horizontal portion 32A having an opening portion 32D on the inflow portion 31 side, and is connected to the horizontal portion 32A and is away from the opening portion 32D. And an inclined portion 32 </ b> B extending obliquely upward. In the present embodiment, the horizontal portion 32A corresponds to the first tube portion.

  The inclined portion 32B is located at least partially above the opening 32D and has a constant inner diameter along the axial direction. In the present embodiment, the inclined portion 32B corresponds to the second cylinder portion and the upward portion.

  The folded portion 33 has a cylindrical shape extending obliquely upward from the lower end portion of the inflow portion 31. And the waste_water | drain which flowed into the inflow part 31 through the drain outlet 102 can be stored in the inside of the bending part which consists of the inflow part 31 and the folding | returning part 33 as sealed water. That is, in this embodiment, the main pipe part 35 is constituted by the inflow part 31, and the sealed part 36 is constituted by the inflow part 31 and the turning part 33.

  The orthogonal part 34 has a cylindrical shape extending from the upper end part of the folded part 33 in a direction (horizontal direction) orthogonal to the inflow part 31. In the present embodiment, the sealed water 36 is sealed up to the sealed surface 37 having the same height as the boundary between the folded portion 33 and the orthogonal portion 34 (in FIGS. 1 and 2 and the like, the sealed surface 37 is indicated by a two-dot chain line). Can be stored. Further, in the present embodiment, the sealing surface 37 is positioned above the entire area of the opening 32 </ b> D, and the sealing water can flow into the communicating cylinder portion 32.

  The transmission mechanism 4 includes a transmission member (for example, a wire) (not shown) that can be reciprocated by displacement of a predetermined operation member (for example, an operation button or an operation handle), a case portion 42, and the case portion 42. A rack (not shown) connected to the transmission member and capable of reciprocating, and a portion to be inserted 41 that protrudes from the inside of the case portion 42 to the outside thereof, and the protruding portion is disposed in the communication tube portion 32. And a C-ring part 43.

  The case portion 42 is formed by combining a plurality of members, and is attached to the inclined portion 32B by, for example, screwing or the like. Moreover, the case part 42 is in the state which contacted or substantially contacted the other end surface of the 2nd structure part 41B mentioned later. Further, a step portion 42A exists on the inner surface of the portion of the case portion 42 that communicates with the internal space of the inclined portion 32B.

  The inserted portion 41 includes a first component portion 41A, a second component portion 41B, a connecting portion 41C, a tubular member 41D, a fixed seal portion 41E, and a movable seal portion 41F.

  41 A of 1st structure parts are arrange | positioned inside 32 A of horizontal parts in the state in which the center axis of the self became coaxial with the central axis of 32 A of horizontal parts. The first component 41A is configured to be rotatable on a horizontally extending rotation shaft. Furthermore, the first component 41A has one end face provided at substantially the same position as the opening 32D along the direction of the central axis thereof, and does not protrude into the inflow portion 31. And the vertical movement part 5 is protrudingly formed in the outer peripheral side of the said one end surface in 41 A of 1st components.

  The vertically moving portion 5 is disposed in the main pipe portion 35 and supports the drain port device 6. The vertical movement unit 5 moves up and down while rotating when the first component 41A rotates. In the present embodiment, the vertical movement portion 5 is short enough not to reach the central axis of the main pipe portion 35.

  In addition, the first component 41A has a portion on the side of the connecting portion 41C that is thinner than a portion on one end side (the side on which the vertically moving portion 5 protrudes). In addition, the outer diameter of the one end side part in the first component portion 41A is substantially the same as the inner diameter of the communication tube portion 32 (horizontal portion 32A).

  The second component 41B is in a state where a portion protruding from the case portion 42 is disposed inside the inclined portion 32B, and rotates around its own central axis (coaxial with the central axis of the inclined portion 32B) as a rotation axis. It is configured to be movable. In the present embodiment, the second component part 41B includes a gear part 41G on the outer periphery of the end part (the other end part) on the side disposed in the case part 42. And the rack part is meshed with the gear part 41G, and the second component part 41B is rotated by the rack reciprocating as the transmission member reciprocates.

  The second component 41B has a hook-like portion on the outer periphery of one end thereof (the end on the first component 41A side), and has an annular groove portion on the outer periphery of the central portion. The groove portion is an arrangement space for the movable seal portion 41F. Further, the outer diameter of the bowl-shaped part is substantially the same as the inner diameter of the communicating cylinder part 32 (inclined part 32B).

  Further, the C ring portion 43 is fitted into the outer periphery of a portion located on the other end side of the second component portion 41B and on the one end side of the gear portion 41G. The C ring portion 43 is in contact with the stepped portion 42A to prevent the second component portion 41B from coming off from the case portion 42, and the second component portion 41B or the like cannot be inserted any more into the inclined portion 32B. It is what.

  41 C of connection parts connect both component parts 41A and 41B in the state which can transmit the rotational force of both component parts 41A and 41B mutually. The connecting portion 41C is configured by, for example, a universal joint. Further, the connecting portion 41C connects the two constituent portions 41A and 41B with almost no backlash. As a result, the two constituent portions 41A and 41B are restricted from relative movement along the axial direction of the inserted portion 41. It has become a state. Therefore, when the relative movement along the axial direction of the inserted portion 41 is restricted in one of the two constituent portions 41A and 41B, the other of the two constituent portions 41A and 41B is also along the axial direction of the inserted portion 41. The relative movement will be restricted.

  In the present embodiment, the transmission member and the rack reciprocate with the displacement of the operation member, whereby the first component portion 41A, the second component portion 41B, and the connecting portion 41C rotate, and as a result, move up and down. The part 5 moves up and down while rotating. That is, in the present embodiment, the transmission member 8 that transmits the driving force generated by the displacement of the operation member to the vertical movement unit 5 is configured by the transmission member, the rack, and the insertion portion 41.

  The cylindrical member 41D has a cylindrical shape and is disposed between the inner peripheral surface of the inclined portion 32B and the outer peripheral surface of the second component portion 41B. The outer diameter of the cylindrical member 41D is substantially the same as the inner diameter of the inclined portion 32B, and the inner diameter of the cylindrical member 41D is substantially the same as the outer diameter of the second component 41B other than the flange-shaped portion and the groove portion. Are the same. The tubular member 41D is in a state of being sandwiched between the hook-shaped portion provided on the outer periphery of the one end portion of the second component portion 41B and the C-ring portion 43. Thereby, while the 2nd component 41B can rotate relatively with respect to the cylindrical member 41D, it is in the state which cannot move relatively along the axial direction.

  The cylindrical member 41D is arranged coaxially with the inclined portion 32B, and the inner peripheral surface thereof is an inclined surface extending obliquely downward toward the opening 32D side. Further, an annular groove portion for arranging the fixed seal portion 41E is formed on the outer periphery of the cylindrical member 41D.

  The fixed seal portion 41E is disposed in the groove portion of the cylindrical member 41D, and is formed in an annular shape from an elastically deformable material (for example, rubber or resin). The entire circumference of the fixed seal portion 41E is sandwiched between the inner peripheral surface of the inclined portion 32B and the outer peripheral surface of the tubular member 41D. As a result, the space between the inclined portion 32B and the cylindrical member 41D is sealed in a watertight manner, and the cylindrical member 41D is basically unable to rotate relative to the inclined portion 32B by the frictional force of the fixed seal portion 41E. ing.

  Similar to the fixed seal portion 41E, the movable seal portion 41F is formed in an annular shape from an elastically deformable material. In addition, the movable seal portion 41F is disposed in the groove portion of the second component portion 41B, and the entire circumference thereof is in contact with the outer peripheral surface of the second component portion 41B and the inner peripheral surface of the cylindrical member 41D. Has been. The movable seal portion 41F provides a watertight seal between the inner peripheral surface of the cylindrical member 41D that is basically immovable and the outer peripheral surface of the second component portion 41B that rotates along the inner peripheral surface. Is done. In the present embodiment, the fixed surface FS is configured by the inner peripheral surface of the cylindrical member 41D, and the movable surface MS is configured by the outer peripheral surface of the second component 41B.

  Note that, as in the present embodiment, the movable seal portion 41F is configured to come into contact with the cylindrical member 41D provided on the inner periphery of the communication tube portion 32, not the communication tube portion 32, so that the movable seal portion 41F can have a relatively small diameter. Thereby, the frictional force at the time of the 2nd structure part 41B rotating can be reduced, and operativity can be improved. It is also possible to improve seal stability. Furthermore, when the second component 41B rotates, the frictional force applied to the cylindrical member 41D becomes relatively small, and the cylindrical member 41D cannot be relatively rotated relative to the inclined portion 32B. It can be maintained in a state. In order to further reduce the frictional force generated when the second component 41B rotates, the movable seal portion 41F may be configured by an X-ring having an X-shaped cross section.

  In addition, the entire sealing portion of the movable seal portion 41F (the portion of the movable seal portion 41F that is in watertight contact with the fixed surface FS and the movable surface MS in order to prevent water leakage) is the opening portion 32D. Is located above a virtual surface VS extending in the horizontal direction (the virtual surface VS is indicated by a dotted line in FIGS. 1 and 2). That is, the movable seal portion 41F is configured such that the entire seal portion is positioned above the opening portion 32D. On the other hand, in the present embodiment, a part of the seal portion in the movable seal portion 41F is configured to be positioned below the sealing surface 37.

  Moreover, in this embodiment, the insertion part 41 is comprised so that insertion to the communicating cylinder part 32 is possible from the opening on the opposite side to the horizontal part 32A in the inclined part 32B. However, when the insertion part 41 is inserted into the communication cylinder part 32, the case part 42 is inclined part 32B in the state where the second component part 41B and the cylindrical member 41D are arranged inside the inclination part 32B. And the inserted portion 41 cannot be inserted any further. That is, in the present embodiment, the C ring portion 43 and the case portion 42 cause the second component 41B to move relative to the horizontal portion 32A along the axial direction of the inclined portion 32B (the axial direction of the inserted portion 41). It is regulated.

  In the present embodiment, in a state where the case portion 42 is attached to the inclined portion 32B, the first component portion 41A moves up and down with respect to a predetermined position along the axial direction of the horizontal portion 32A (for example, up and down movement with respect to the inner peripheral surface of the main pipe portion 35). The first component 41A and the second component 41B so that the center CP of the coupling part 41C is arranged on the axis of the horizontal part 32A. The length of the is designed.

  Further, as described above, since the case portion 42 is in contact with or substantially in contact with the other end surface of the second component portion 41B, in the state where the case portion 42 is attached to the inclined portion 32B, the axial direction of the inclined portion 32B (the inserted portion 41). The relative movement of the second component portion 41B to the side opposite to the horizontal portion 32A along the axial direction) is restricted. Therefore, in the present embodiment, the C ring portion 43 and the case portion 42 constitute a restricting portion that restricts the relative movement of the second component portion 41B along the axial direction of the inclined portion 32B (the axial direction of the inserted portion 41). Has been.

  The drain port device 6 is arranged in a state in which the drain port member 2 and the main pipe portion 35 can move up and down on the inner circumference, and includes an outer peripheral wall portion 61, a support shaft 62, and a plug lid 63. The outer peripheral wall portion 61 and the support shaft 62 are interposed between the plug lid 63 and the vertical movement portion 5, and have a role of transmitting a driving force due to the displacement of the vertical movement portion 5 to the plug lid 63.

  The outer peripheral wall portion 61 has a cylindrical shape, and is disposed so that the outer peripheral surface thereof is along the inner peripheral surfaces of the drain port member 2 and the main pipe portion 35. In the present embodiment, the outer peripheral wall portion 61 corresponds to the supported portion.

  The support shaft 62 has a rod shape and includes a cylindrical shaft portion 62A, a closing portion 62B, a lid-side shaft portion 62C, and an absorber spring 62D.

  The cylindrical shaft portion 62 </ b> A is located inside the outer peripheral wall portion 61 and has a cylindrical shape coaxial with the outer peripheral wall portion 61. The outer peripheral surface of the cylindrical shaft portion 62A and the inner peripheral surface of the outer peripheral wall portion 61 are connected by a predetermined rib or the like (not shown). In this embodiment, the cylindrical shaft portion 62A and the outer peripheral wall portion 61 are integrated. Yes. Further, a slip-out restricting portion 62E that protrudes radially inward is formed on the inner periphery of the upper end portion of the cylindrical shaft portion 62A. In addition, between the cylindrical shaft part 62A and the outer peripheral wall part 61, for example, a collecting part for collecting a foreign substance having a mesh shape may be provided.

  The closing part 62B has a disk shape, and closes the lower end side opening by being fitted into the lower end side opening of the cylindrical shaft part 62A.

  The lid-side shaft portion 62C has an upper end attached to the plug lid 63 and a lower end side portion having a bowl shape. The lid-side shaft portion 62C has the bowl-shaped portion disposed on the inner periphery of the cylindrical shaft portion 62A, and can move relative to the cylindrical shaft portion 62A along its own axial direction. However, the lid-side shaft portion 62C is in a state in which the removal from the cylindrical shaft portion 62A is prevented by the presence of the removal restricting portion 62E.

  The absorber spring 62D is disposed between the closing portion 62B and the lid side shaft portion 62C in the cylindrical shaft portion 62A.

  By configuring the support shaft 62 as described above, the support shaft 62 is provided with shock absorber means, and when the drain port 102 is in an open state, a downward force is applied to the plug lid 63. In such a case, the absorber spring 62D is compressed and deformed so that an excessively large force is not applied to the vertical movement portion 5, the outer peripheral wall portion 61, and the like. As a result, failure and breakage of the drain plug device 1 can be effectively prevented.

  The plug lid 63 is for opening and closing the drain port 102, and is a disc-shaped lid portion 63A made of resin or the like, and an elastically deformable material (for example, attached to the back outer peripheral side of the lid portion 63A). And an annular packing portion 63B made of rubber, resin or the like. The lid portion 63A is attached to the support shaft 62 by fitting the upper end portion of the lid side shaft portion 62C to, for example, a cylindrical attachment portion (not shown) provided in the central portion of the back surface. It has been.

  In the present embodiment, as the outer peripheral wall 61 and the support shaft 62 are lifted along with the upward movement of the vertical movement portion 5, the plug lid 63 moves upward, and as a result, the packing portion 63 </ b> B is separated from the bottom wall portion 101. As a result, the drain port 102 is opened. On the other hand, the stopper lid 63 is moved down by gravity with the downward movement of the vertically moving portion 5, and the entire outer periphery of the packing portion 63 </ b> B contacts the bottom wall portion 101, thereby closing the drainage port 102. Yes.

  In the present embodiment, the vertical movement unit 5 supports the drain port device 6 by contacting the lower end surface of the outer peripheral wall 61 when the drain port 102 is in an open state. When 102 is in the closed state, it is separated from the lower end surface of the outer peripheral wall 61. Thereby, when the drain outlet 102 is in a closed state, the stopper lid 63 (packing portion 63B) can be reliably brought into contact with the bottom wall portion 101, and good water tightness can be obtained. .

  Next, among the installation steps of the drain plug device 1 with respect to the bathtub 100, particularly the attachment steps of the transmission mechanism body 4 and the vertical movement portion 5 will be described. In addition, prior to the attachment of the transmission mechanism body 4 and the vertical movement portion 5, the pipe 3 is attached to the bathtub 100 in advance by the drain port member 2.

  As shown in FIG. 3, first, a unit in which the transmission mechanism 4 and the vertical movement unit 5 are integrated by assembling the first component 41A, the second component 41B, the cylindrical member 41D, the case 42, and the like. 7 is obtained in advance. At this time, the transmission member is connected in advance to the rack in the case portion 42.

  Then, as shown in FIG. 4, the unit 7 is sequentially inserted into the communicating tube portion 32 from the opening on the opposite side to the horizontal portion 32 </ b> A in the inclined portion 32 </ b> B with the vertical movement portion 5 as the head. Then, while adjusting the position of the vertical movement portion 5 along the rotational direction to be a predetermined position, the unit 7 is moved with respect to the communication tube portion 32 until the case portion 42 contacts the end portion of the inclined portion 32B. insert. When the unit 7 can no longer be inserted, the first component 41A is disposed at a predetermined position along the axial direction of the horizontal portion 32A.

  In the present embodiment, as described above, the first component 41A is configured from the horizontal portion 32A by configuring the first component 41A such that the portion on the connecting portion 41C side is thinner than the portion on the distal end side. It is possible to easily pass the bent portion extending to the inclined portion 32B. In addition, as described above, the outer diameter of the flange-shaped portion or the cylindrical member 41D in the second component 41B is substantially the same as the inner diameter of the communication cylindrical portion 32 (inclined portion 32B), so that the inclined portion 32B. On the other hand, the second component 41B is arranged substantially coaxially. The center CP (see FIG. 2) of the connecting portion 41C is disposed substantially on the axis of the horizontal portion 32A, and as a result, the first component portion 41A is disposed substantially coaxially with the communicating cylinder portion 32 (horizontal portion 32A). It has become.

  And finally, attachment of the unit 7 is completed by attaching the case part 42 to the inclined part 32B. The movement of the second component 41B along the axial direction of the inclined portion 32B is restricted by the attachment of the case portion 42 to the inclined portion 32B, and as a result, the first configuration along the axial direction of the inserted portion 41. The movement of the portion 41A is restricted.

  As described above in detail, according to the present embodiment, the entire seal portion of the movable seal member 41F is always located above the opening 32D. Therefore, as shown in FIG. 5, even if the water level in the pipe 3 rises and water W enters between the movable surface MS and the fixed surface FS, air remains between the water surface and the movable seal member 41F. The rise of the water level between the movable surface MS and the fixed surface FS is suppressed, and water does not normally reach the movable seal member 41F. In addition, even if a minute breakage that may lead to water leakage occurs in the movable seal member 41F due to use or the like, that is, even if a minute breakage that may cause air to escape occurs in the movable seal portion 41F, Since it takes time to escape, water leakage does not occur immediately. Furthermore, even if water reaches the movable seal member 41F, it becomes easy to draw water toward the opening 32D at a position lower than the movable seal member 41F, and a relatively large amount around the movable seal member 41F. The situation where the water continues to exist is less likely to occur. Combined with these effects, it is possible to effectively suppress the leakage of water through the outer periphery of the movable surface MS, thereby realizing excellent water tightness.

  The fixed surface FS is an inclined surface that extends obliquely downward toward the opening 32D side. Therefore, it becomes more difficult for water to reach the movable seal member 41F, and even if water reaches the movable seal member 41F, it becomes easier to draw water (to easily flow down) toward the opening 32D. As a result, watertightness can be dramatically improved.

  Furthermore, the movable surface MS is configured to rotate with the displacement of the operation member. Therefore, compared to the case where the movable surface MS reciprocates, the frictional force generated between the movable seal member 41F and the fixed surface FS when transmitting the driving force can be reduced. Thereby, the operativity can be improved.

  In addition, since the first component 41A is disposed on the horizontal portion 32A and is rotated by a horizontally extending rotation shaft, even if the vertical moving portion 5 moves up and down due to the rotation of the first component 41A, the main pipe The protruding amount of the vertically moving portion 5 with respect to the inside of the portion 35 can be kept substantially constant. Therefore, the outer peripheral wall portion 61 can be more reliably supported by the vertical movement portion 5 without particularly increasing the length of the vertical movement portion 5. As a result, it is possible to more reliably prevent problems such as adhesion of foreign matter to the vertical movement portion 5.

  In addition, since the inclined portion 32B is provided following the horizontal portion 32A, the entire seal portion in the movable seal member 41F is positioned above the opening portion 32D without making the communication cylinder portion 32 extremely long. It is possible to satisfy the configuration of Therefore, an increase in the size of the pipe 3 can be suppressed, and the degree of installation freedom can be improved and the manufacturing cost can be reduced.

Further, the insertion part 41 is inserted into the communication cylinder part 32 from the opening on the opposite side to the horizontal part 32A in the inclined part 32B, and the second component part 41B is moved by the C ring part 43 and the case part 42. When the state is restricted, the first component portion 41A is necessarily arranged at a fixed position along the axial direction of the horizontal portion 32A, and further cannot move along the axial direction of the horizontal portion 32A. Therefore, as in the present embodiment, if the first component 41A is designed to be finally disposed at a predetermined position along the axial direction of the horizontal portion 32A, the first component 41A is aligned. The first component 41A can be naturally arranged at the predetermined position without any special operation, and the first component 41A does not move from the position along the axial direction of the horizontal portion 32A. Therefore, the installation work of the drain plug device 1 can be performed more quickly and more accurately, and the workability related to attachment and replacement can be remarkably improved.
[Second Embodiment]
Next, the second embodiment will be described focusing on the differences from the first embodiment. In the first embodiment, a part of the seal portion in the movable seal portion 41 </ b> F is configured to be positioned below the sealing surface 37.

  On the other hand, in the second embodiment, as shown in FIG. 6, for example, by extending the inflow portion 31 further downward, the entire seal portion in the movable seal portion 41 </ b> F becomes the sealed surface in the sealed portion 36. It is configured to be positioned above 37. In the second embodiment, as in the first embodiment, the entire seal portion of the movable seal portion 41F is configured to be positioned above the opening 32D.

  As described above, according to the second embodiment, the movable seal member 41F is disposed inside the inclined portion 32B, and the entire seal portion of the movable seal member 41F is positioned above the sealing surface 37. Therefore, normally, the sealing water does not reach the movable seal member 41F, and even if the movable seal member 41F is slightly damaged, water leakage does not occur immediately. Further, even if water reaches the movable seal member 41F, it becomes easy to draw water toward the sealing surface 37 at a position lower than the movable seal member 41F, so that a large amount of water around the movable seal member 41F. The situation where it continues to exist is less likely to occur. Combined with these functions and effects, it is possible to effectively prevent water from leaking through the outer periphery of the movable surface MS, and excellent water tightness can be obtained.

  Also in the second embodiment, since the entire seal portion of the movable seal portion 41F is configured to be positioned above the opening portion 32D, the same effects as those of the first embodiment are achieved. The Rukoto. Therefore, in combination with the above-described operation and effect due to the fact that the entire seal portion of the movable seal member 41F is positioned above the water sealing surface 37, the probability of water leakage is extremely low, and better water tightness can be obtained. .

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, at least a part of the opening 32D is configured to be positioned below the sealing surface 37. However, as shown in FIG. You may comprise so that it may be located above. In this case, normally, the sealed water does not enter the communication tube portion 32, so that the water tightness can be further improved.

  (B) In the above embodiment, the movable surface MS is configured to be rotatable with respect to the fixed surface FS. However, the movable surface may be configured to reciprocate with respect to the fixed surface. When the movable surface reciprocates with respect to the fixed surface, the movable seal portion can move along the axial direction of the communication tube portion 32 as the movable surface moves, so the movable seal portion is arranged at any position. However, it is necessary to adjust the arrangement position of the movable seal portion so that the entire seal portion of the movable seal portion is always disposed above the opening 32D and the sealing surface 37.

  (C) In the above embodiment, the outer peripheral surface (movable surface MS) of the second component 41B is configured to rotate along the inner peripheral surface (fixed surface FS) of the tubular member 41D. Since the cylindrical member 41D is integrated with the second component 41B, the outer peripheral surface (movable surface) of the second component is rotated along the inner peripheral surface of the communicating cylinder 32 (inclined portion 32B). Or you may comprise so that it may reciprocate. That is, the fixed surface may be configured by the inner peripheral surface of the communication tube portion 32.

  (D) In the above embodiment, the vertically moving portion 5 protrudes from the outer peripheral side of the one end surface of the first component 41A, and is configured to move up and down while rotating as the first component 41A rotates. However, the vertical movement part can be moved up and down within the main pipe part 35 and can move the plug lid 63 up and down by its own vertical movement, and the configuration thereof is the same as that described in the above embodiment. It is not limited. Therefore, the vertically moving portion may be, for example, a bar-like member that is vertically movable and disposed at the center of the main pipe portion 35 (inflow portion 31). Further, the vertical movement portion is a rod-shaped member whose distal end portion is disposed in the main pipe portion 35 and whose proximal end portion is rotatably supported, and the stopper lid 63 is directly or indirectly attached to the distal end portion. You may comprise so that it may support. In this case, by rotating the vertically moving portion at the base end portion, the distal end portion of the vertically moving portion moves up and down, and consequently the plug lid 63 moves up and down.

  (E) In the above embodiment, the upward portion and the second cylindrical portion are configured by the inclined portion 32B extending obliquely upward, but the upward portion and the second cylindrical portion may extend vertically upward. .

  (F) In the said embodiment, although the bathtub 100 is illustrated as a tank body, the tank body which can apply the technical idea of this invention is not limited to a bathtub. Therefore, for example, the technical idea of the present invention may be applied to a wash basin or a kitchen sink.

  (G) In the above embodiment, the stopper lid 63 (packing portion 63B) is configured to close the drain port 102 by contacting the bottom wall portion 101 (tub 100), but the stopper lid 63 (packing portion) 63B) may contact the member (for example, drain port member 2) installed in the bathtub 100, and you may comprise so that the drain port 102 may be closed.

  (H) In the above-described embodiment, the inserted portion 41 is inserted into the communicating cylinder portion 32 in the order of the first component portion 41A and the second component portion 41B from the opening opposite to the horizontal portion 32A in the inclined portion 32B. Thus, the inserted portion 41 is arranged in the communication cylinder portion 32. On the other hand, after separating the two components 41A and 41B, the first component 41A is inserted from the opening 32D of the horizontal portion 32A, and the first portion 41A is opened from the opening on the opposite side to the opening 32D in the inclined portion 32B. The inserted part 41 may be arranged in the communicating cylinder part 32 by inserting the two constituting parts 41B and connecting both the constituent parts 41A and 41B in the communicating cylinder part 32.

  DESCRIPTION OF SYMBOLS 1 ... Drain plug apparatus, 3 ... Piping, 5 ... Vertical movement part, 8 ... Transmission body, 32 ... Communication cylinder part, 32A ... Horizontal part (1st cylinder part), 32B ... Inclination part (2nd cylinder part, upward) Part), 32D ... opening part, 35 ... main pipe part, 36 ... sealed part, 37 ... sealed surface, 41 ... inserted part, 41A ... first constituent part, 41B ... second constituent part, 41D ... cylindrical member, 41F ... Moving seal part, 42 ... Case part (regulation part), 43 ... C ring part (regulation part), 61 ... Outer peripheral wall part (supported part), 63 ... Cover lid, 100 ... Ttub (tank), 102 ... drain port, FS ... fixed surface, MS ... movable surface.

Claims (9)

A plug lid for opening and closing the drain of the tank body;
Piping having a main pipe portion through which drainage from the drainage port flows;
A vertical movement part that is movable up and down in the main pipe part and moves the stopper lid up and down by its own vertical movement;
A drain plug device including a transmission body that transmits a driving force generated by displacement of a predetermined operation member to the vertical movement unit,
The pipe has a communicating cylinder part that branches and extends from the main pipe part and whose internal space communicates with the internal space of the main pipe part,
The transmission body rotates or reciprocates along a fixed surface which is an inner peripheral surface of the cylindrical member disposed on the inner peripheral surface of the communication tube portion or the inner periphery of the communication tube portion by displacement of the operation member. It has an insertion part comprising a movable surface that can move,
Between the movable surface and the fixed surface, an annular movable seal member that contacts both is provided,
The drain plug device characterized in that the entire seal portion of the movable seal member is always positioned above the opening on the main tube portion side in the communication tube portion. A plug lid for opening and closing the drain of the tank body;
A main pipe part through which the drainage from the drainage port flows, and a pipe having a sealing part in which the drainage water that has passed through the main pipe part flows and the sealed water is stored;
A vertical movement part that is movable up and down in the main pipe part and moves the stopper lid up and down by its own vertical movement;
A drain plug device including a transmission body that transmits a driving force generated by displacement of a predetermined operation member to the vertical movement unit,
The pipe has a communicating cylinder part that branches and extends from the main pipe part and whose internal space communicates with the internal space of the main pipe part,
The communicating cylinder part is provided with an upward part at least partially located above the opening on the main pipe part side of the communicating cylinder part and extending in a vertical direction or an oblique vertical direction,
The transmission body is rotated or reciprocated along a fixed surface that is an inner peripheral surface of a cylindrical member disposed on an inner peripheral surface of the upward portion or an inner periphery of the upward portion by displacement of the operation member. It has an insertion part comprising a movable surface that can move,
Between the movable surface and the fixed surface, an annular movable seal member that contacts both is provided,
The drain plug device, wherein the entire sealing portion of the movable sealing member is always positioned above the sealing surface of the sealing portion.   The drain plug device according to claim 2, wherein the entire seal portion of the movable seal member is always positioned above the opening.   The drain plug device according to any one of claims 1 to 3, wherein the fixed surface is an inclined surface extending obliquely downward toward the opening side.   5. The drain plug according to claim 1, wherein the movable surface is configured to rotate about its own central axis as a rotation axis in accordance with displacement of the operation member. apparatus. The communication tube portion is
A first tube portion extending from the main pipe portion;
A second portion extending from the end of the first tube portion opposite to the opening portion upward or obliquely upward toward a side away from the opening portion and extending in a direction different from the extending direction of the first tube portion. The drain plug device according to claim 5, further comprising a tube portion. The inserted portion is
A rotatable first component disposed inside the first tube portion;
A rotatable second component disposed inside the second cylindrical portion,
The first component and the second component are capable of transmitting rotational power to each other, and are connected in a state in which relative movement along the axial direction of the inserted portion is restricted,
In the state where the second constituent part is disposed inside the second cylindrical part, a regulation part is provided that restricts relative movement of the second constituent part along the axial direction of the second cylindrical part. The drain plug device according to claim 6. The up-and-down moving part has a protruding shape that projects into the main pipe part from the end face on the main pipe part side in the first component part, supports a predetermined supported part, and rotates the inserted part. It is configured to move up and down while rotating,
The main pipe portion extends in the vertical direction,
The first cylinder part extends in a horizontal direction from the main pipe part,
The drain plug device according to claim 6 or 7, wherein the second cylindrical portion extends obliquely upward toward a side away from the opening.   The said insertion part is comprised so that it can insert with respect to the said communication cylinder part from the opening on the opposite side to said 1st cylinder part in said 2nd cylinder part, The any one of Claim 6 thru | or 8 characterized by the above-mentioned. The drain plug device according to Item 1.

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