JP2016108864A - Drain plug device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain plug device that ensures water-tightness when an exhaust port is closed, at the same time offering high drainage capacity and enhanced strength of a support protrusion.SOLUTION: A drain plug device 1 includes a plug cover 55 for opening/closing an exhaust port 103, a water communicating member 52 having an annular outer peripheral wall part 52A disposed along an inner peripheral surface of a pipe 51, and a plug cover side mechanism part 4. The plug cover side mechanism part 4 includes a rotary part 41, and a support protrusion 44 protruding into the pipe 51 from the rotary part 41, the support protrusion having the outer peripheral wall part 52A mounted thereon for supporting the water communicating member 52. The support protrusion 44 separates from the outer peripheral wall part 52A when the exhaust port 103 is closed. The support protrusion 44 has a width in a horizontal direction wider than a thickness in a vertical direction, when the water communicating member 52 is positioned at a lowermost part of a range of movement thereof and the support protrusion 44 is positioned to come in contact with a lower edge surface of the outer peripheral wall part 52A.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drain plug device provided at a drain outlet of a tank body.

  The drain plug device is provided with a plug lid provided at a drain port of a tank body (for example, a bathtub or a basin), and the drain port is opened and closed 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 portion (support mechanism) that holds the support shaft in a vertically movable state. It is generally known that the lid is moved up and down by being transmitted to the support shaft by a transmission member or the like (see, for example, Patent Document 1).

  Further, in recent years, a pivotable rotation portion and a support protrusion that protrudes from the rotation portion toward the inside of the pipe and a water passage member that holds the support shaft with respect to the support protrusion are placed. Thus, there has been proposed a drain plug device that supports a water passage member, a plug lid, and the like by a support protrusion (see, for example, Patent Document 2). In the technique described in the patent document, the water-permeable member, and thus the plug lid, moves up and down as the support protrusion moves up and down as the rotation unit rotates. In addition, since the support protrusion is configured so as not to reach the center of the pipe, the prevention of adhesion of foreign matters and the like to the support protrusion and the improvement of the cleaning property are achieved. In this technique, a cylindrical protrusion is used as the support protrusion.

Japanese Patent Laid-Open No. 11-21965 JP 2012-36558 A

  By the way, in the above technique, when the drainage port is closed, the support protrusion is separated from the lower end surface of the water passage member when the drainage port is closed in order to secure a good water tightness by closely attaching the stopper lid to the tank body or the like. It is conceivable to make it possible. Further, in the above technique, when a drain outlet is opened in a state where water is accumulated in the tank body, a relatively large force can be applied to one support protrusion, so that the support protrusion is improved in strength. It is conceivable that the protrusion has a large diameter.

  However, when the support protrusion has a large diameter, as shown in FIG. 12, the amount of movement S along the vertical direction of the upper surface of the support protrusion 244 when the rotating portion 241 is rotated is relatively small. [If the water passage member 252 is always in contact with the upper surface of the support protrusion 244, the movement amount S becomes equal to the vertical movement amount (lift amount) of the plug lid). In addition, if the support protrusion 244 can be separated from the water passage member 252 when the drain outlet is closed, the lift amount (vertical movement amount) of the plug lid is further reduced, leading to a decrease in drainage capacity. There is a risk that.

  The present invention has been made in view of the above circumstances, and its object is to obtain excellent drainage capacity and improved strength of the support protrusion while ensuring good water tightness when the drain outlet is closed. It is in providing the drain plug device which can be performed.

  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;
A support shaft for supporting the stopper lid at its upper end;
While having an annular outer peripheral wall portion arranged along the inner peripheral surface of the predetermined pipe, a water passage member that supports the support shaft;
A pivotable pivot part, and a lower end surface of the outer peripheral wall part is placed in a state where the pivot part projects into the pipe from the pivot part and the drain port is opened to support the water passage member. A stopper lid side mechanism configured to have a support protrusion, wherein the rotating portion rotates, and the water passing member moves up and down as the support protrusion moves up and down. ,
A drain plug device configured such that the tip of the support protrusion does not reach the center of the pipe,
The support projection is configured to be separable from the outer peripheral wall portion in a state where the drain port is closed,
In the state where the support protrusion is disposed so as to be in contact with the lower end surface of the outer peripheral wall portion while the water passage member is disposed at the lowermost part of the movable range, the support protrusion is orthogonal to its own central axis. A drain plug device characterized in that the horizontal width along the direction of the drain is larger than the thickness of the vertical direction along the direction perpendicular to the central axis of the horizontal direction.

  According to the means 1, the support protrusion can be separated from the outer peripheral wall portion in a state where the drain outlet is closed. Therefore, at the time of closing the drain outlet, the stopper lid can be more securely adhered to the tank body and the like, and good water tightness can be obtained.

  Furthermore, according to the means 1, the support protrusion is arranged while the water passage member is disposed at the lowermost part of the movable range (that is, the water passage member is disposed at the position where the drain port is closed). In a state where it is arranged so as to be in contact with the lower end surface of the outer peripheral wall portion, the support protrusion has a horizontal width along the direction perpendicular to its central axis, and the vertical width along the direction perpendicular to its central axis. It is designed to be larger than the thickness in the direction. Accordingly, it is possible to secure a large amount of movement along the vertical direction of the upper surface of the support protrusion when the rotating portion is rotated while improving the strength of the support protrusion. As a result, even if the support protrusion can be separated from the outer peripheral wall portion in a state where the drain port is closed, the lift amount (vertical movement amount) of the plug lid can be sufficiently increased, and a good drainage capacity is obtained. be able to.

  Mean 2. While the water passage member is disposed at the lowermost part of the movable range and the support protrusion is disposed so as to be in contact with the lower end surface of the outer peripheral wall portion, the support protrusion is below the outer peripheral wall portion. 2. The drain plug device according to means 1, wherein the portion that contacts the end surface has a horizontal plane.

  The “horizontal plane” is not limited to a strict horizontal plane, but may be slightly inclined with respect to the horizontal plane or may have a slight convex shape or concave shape.

  According to the above means 2, the outer peripheral wall portion of the support protrusion is disposed in a state where the support protrusion is disposed so as to contact the lower end surface of the outer peripheral wall portion while the water passage member is disposed at the lowermost part of the movable range. The part which contacts is made into a horizontal surface shape. Therefore, the amount of movement along the vertical direction of the upper surface of the support projection (the surface that comes into contact with the outer peripheral wall portion and can change as the rotation portion rotates) when the rotation portion is rotated is larger. can do. As a result, the lift amount of the plug lid can be further increased, and the drainage capacity can be further improved.

  Means 3. The drain plug according to claim 1 or 2, wherein at least a portion of the support protrusion that contacts the lower end surface of the outer peripheral wall portion has a smooth shape with no corners along the outer peripheral direction of the support protrusion. apparatus.

  When a corner is provided at a portion of the support protrusion that contacts the lower end surface of the outer peripheral wall, the corner is compared with the outer peripheral wall when the support protrusion is rotated to open and close the lid. As a result, the support protrusion may be easily worn. If the support protrusion is worn, the strength of the support protrusion may be reduced, or the height of the stopper lid may be reduced when the drain port is opened, resulting in a decrease in drainage capacity. is there.

  In this regard, according to the means 3, the portion of the support protrusion that contacts the lower end surface of the outer peripheral wall portion has a smooth shape without corners. Therefore, it is possible to prevent a situation in which only a part of the support protrusion slides on the outer peripheral wall portion for a long period of time when the support protrusion is rotated to open the stopper lid. Thereby, abrasion of a support protrusion can be prevented more reliably and the fall of the intensity | strength of a support protrusion and drainage capability can be suppressed effectively.

It is sectional drawing which shows the structure of the part provided in the drain outlet side among drain plug devices. It is sectional drawing of an operating device. It is a side view of a plug lid side mechanism etc. attached to piping. It is the JJ sectional view taken on the line of FIG. It is a perspective view which shows structures, such as a case member and a moving direction conversion part. It is a top view for demonstrating the aspect in piping. It is sectional drawing for demonstrating the shape etc. of a support protrusion. It is the elements on larger scale which show the structure of a support protrusion. It is a cross-sectional schematic diagram for showing the amount of up-and-down movement of the upper surface of the support protrusion when the rotating part is rotated. It is an expanded sectional view which shows the structure of the support protrusion in another embodiment. (A)-(c) is the elements on larger scale which show the shape of the support protrusion in another embodiment. It is a cross-sectional schematic diagram for showing the up-and-down movement amount of the upper surface of the support protrusion in a prior art.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIGS. 1 and 2, the drain plug device 1 is attached to a basin 100 or the like as a tank body, and includes an operation device 2, a release wire 3, a plug lid side mechanism portion 4, and a drain port. And a device 5.

  As shown in FIG. 2, the operating device 2 is capable of reciprocating on a cylindrical guide portion 21 attached to a wall-like back guard 101 provided in the vicinity of the washbasin 100 and on the inner periphery of the guide portion 21. And a displacement member 22 disposed on the surface.

  In addition, one end of the displacement member 22 is attached to the other end of a transmission member 31 to be described later of the release wire 3 so that the transmission member 31 reciprocates as the displacement member 22 reciprocates. .

  Further, an operation side bending guide member 6 having a cylindrical shape that is bent substantially at a right angle is attached to the outer periphery of one end portion of the guide portion 21. And the other end part of the tube member 32 mentioned later of the release wire 3 is hold | maintained in the inner periphery of the operation side bending guide member 6. FIG.

  The release wire 3 includes a long transmission member 31 made of a wire or the like and a long cylindrical tube member 32 made of resin, rubber, or the like. The transmission member 31 is disposed on the inner periphery of the tube member 32, and reciprocates with respect to the tube member 32 as the displacement member 22 is displaced.

  The plug lid side mechanism unit 4 is configured to be freely attachable to and detachable from a pipe 51 (to be described later) of the drain port device 5, and in this embodiment, FIG. 1 and FIG. The plug lid side guide member 7 and the like are attached to the outside of the pipe 51 as shown in FIG. Further, as shown in FIGS. 4 and 5, the plug lid side mechanism unit 4 is connected to a rotatable rotation unit 41 and one end of the transmission member 31, and reciprocating the transmission member 31. The moving direction converting part 42 for converting to the moving direction and the moving direction converting part 42 are housed inside and a case member 43 attached to the pipe 51 is provided.

  The rotating portion 41 protrudes from the inside of the case member 43 to the outside, and this protruding portion is inserted into a mounting pipe 51B described later of the pipe 51. Moreover, the rotation part 41 has the rod-shaped support protrusion 44 which protrudes in the piping 51 (main body pipe | tube 51A) in the outer peripheral side of the end surface located in the internal space side of the main body pipe | tube 51A mentioned later of the piping 51. As shown in FIG. .

  The support protrusion 44 is relatively short so that the tip thereof does not reach the center of the main body pipe 51A (the central axis CL1 of the main body pipe 51A). Further, as the rotating portion 41 rotates, the support protrusion 44 moves up and down while rotating. In this embodiment, the turning radius of the support protrusion 44 (the distance from the turning axis CL2 of the turning portion 41 to the center axis CL3 of the supporting protrusion 44) is along the direction of the center axis CL1 of the main body pipe 51A. Thus, the radius of the portion corresponding to the range in which the support protrusion 44 can be arranged is made smaller.

  In addition, with the rotation of the rotation unit 41, the support protrusion 44 moves in a direction orthogonal to the rotation axis CL2 of the rotation unit 41 when viewed from above. In the present embodiment, the rotatable range of the rotating part 41 is set to be less than a half circumference, and the support protrusion 44 is fixed relative to the pipe 51 in a state where the stopper cover side mechanism part 4 is attached to the pipe 51. It is comprised so that it may be arrange | positioned in a position. As a result, when the rotation portion 41 is rotated in a state where the lower end surface of the outer peripheral wall portion 52A described later is placed on the support protrusion 44, the support protrusion 44 has its own The center axis CL3 moves within a range not exceeding the rotation axis CL2 of the rotation unit 41.

  The movement direction conversion part 42 includes a rack part 42A connected to one end of the transmission member 31, and a rotatable gear part 42B that is meshed with the rack part 42A and provided coaxially with the rotation part 41. It has. When the transmission member 31 reciprocates, the rack portion 42A reciprocates within the case member 43, and the rotation portion 41 rotates due to the rotation of the gear portion 42B. As a result, the support protrusion 44 rotates and moves up and down. It is supposed to be.

  The case member 43 includes a plurality of locking portions 43 </ b> A extending in parallel with the rotating portion 41 on the surface on the protruding side of the rotating portion 41. The locking portion 43A has a hook shape with its tip protruding to the outer peripheral side. Further, a protruding portion 43B that protrudes to the outer peripheral side is formed on the side surface portion of the locking portion 43A.

  In addition, a front contact portion 43C and a rear contact portion 43D are provided at a portion of the case member 43 in which the rack portion 42A is accommodated so as to sandwich the front and rear in the reciprocating direction of the rack portion 42A. Then, when the rack portion 42A moves forward with the forward movement of the transmission member 31, the rack portion 42A comes into contact with the front side contact portion 43C, so that further forward movement of the rack portion 42A is restricted, and consequently rotates. Further rotation of the portion 41 is restricted. On the other hand, when the rack portion 42A is moved backward along with the backward movement of the transmission member 31, the rack portion 42A comes into contact with the rear side contact portion 43D, so that further backward movement of the rack portion 42A is restricted, and consequently Further rotation of the moving part 41 is restricted. In other words, in the present embodiment, the front side contact portion 43C and the rear side contact portion 43D constitute a rotation range defining means for defining a rotatable range of the rotation portion 41.

  Further, a tubular lid cover side guide member 7 is attached to the outlet portion of the release wire 3 in the case member 43. One end portion of the tube member 32 is held inside the stopper cover side guide member 7.

  Returning to FIG. 1, the drain port device 5 includes a pipe 51, a water passage member 52, a support shaft 53, a hair catcher 54, and a plug lid 55.

  The pipe 51 is attached to the back surface of the bottom wall portion 102 such that its internal space communicates with a drain port 103 formed through the bottom wall portion 102 of the basin 100. More specifically, an internal thread 51E is formed on the inner periphery of the upper end of the pipe 51. The upper end of the pipe 51 is disposed on the back surface of the bottom wall 102, and then the drain thread 103 is passed through the female thread 51E. A tubular drain port member 57 having a male screw portion 57A on the outer periphery is screwed together, and the bottom wall portion 102 is sandwiched between the upper end portion of the drain port member 57 and the upper end portion of the pipe 51, whereby the pipe 51 Is attached to the back surface of the bottom wall 102. And the waste water which passed the drain outlet 103 flows into the inside of the piping 51, and is discharged | emitted. An annular seal member 8 made of an elastically deformable material is disposed between the upper end portion of the pipe 51 and the bottom wall portion 102, and the gap between the pipe 51 and the bottom wall portion 102 is arranged by the seal member 8. It is sealed watertight.

  Further, the pipe 51 is formed of a predetermined resin or the like, and is formed in a cylindrical main body pipe 51A extending along the vertical direction and horizontally protruding from the outer periphery of the main body pipe 51A. And a cylindrical mounting pipe 51B communicating with the internal space of the main body pipe 51A. In the present embodiment, the attachment tube 51B has an inner diameter smaller than that of the main body tube 51A. Further, the attachment pipe 51B is disposed slightly shifted in the direction perpendicular to the radial direction of the main body pipe 51A so that its own central axis does not intersect with the central axis CL1 of the main body pipe 51A (see FIG. 4). For this reason, the rotation part 41 inserted through the attachment pipe 51B is arranged such that its own rotation axis CL2 does not intersect the center axis CL1 of the main body pipe 51A.

  Further, a pair of mounting hole portions 51C that are rotationally symmetric with respect to the central axis of the mounting tube 51B are formed through the end portion of the mounting tube 51B that is located on the opposite side of the main body tube 51A (see FIG. 4). ). The mounting hole 51C has a curved shape extending along the circumferential direction of the mounting tube 51B. Further, a recessed portion (not shown) having a shape recessed toward the outer peripheral side is formed in a portion of the attachment tube 51B where the attachment hole 51C is formed.

  Then, from the outside of the pipe 51, the rotation part 41 is inserted into the attachment pipe 51B, and the locking part 43A of the case member 43 is inserted into the attachment hole 51C. (Case member 43) is rotated, and the locking portion 43A is locked to the mounting tube 51B (particularly, the portion corresponding to the mounting hole 51C in the mounting tube 51B), while the recess portion of the mounting tube 51B is engaged. The stopper lid side mechanism 4 is attached to the pipe 51 by locking the protrusion 43B. In addition, the stopper lid side mechanism part 4 can be removed from the piping 51 in the reverse procedure to the attachment method. That is, the stopper lid side mechanism portion 4 can be attached to and detached from the pipe 51 from the outside.

  In addition, since the protrusion 43B is locked to the recess, in the state in which the case member 43 is attached to the attachment pipe 51B, the plug lid side mechanism part 4 is in a state in which relative rotation with respect to the attachment pipe 51B is difficult. At a certain relative position. In this manner, the stopper lid side mechanism portion 4 is attached to the attachment pipe 51B at a fixed relative position, so that the support protrusion 44 is arranged at a fixed relative position with respect to the pipe 51.

  The water passage member 52 is configured to be vertically movable in the pipe 51, and includes an annular outer peripheral wall portion 52A and a lower collecting portion 52C extending inward from the inner periphery of the outer peripheral wall portion 52A. Yes.

  The outer peripheral wall 52A is arranged in the pipe 51 (main body pipe 51A) so as to be along the inner peripheral surface of the pipe 51 (main body pipe 51A). Further, since the lower end surface of the outer peripheral wall portion 52A is placed on the support protrusion 44, the water passing member 52 is supported in the pipe 51 (main body pipe 51A) by the support protrusion 44. Yes. Furthermore, the lower end surface of the outer peripheral wall 52A is configured to be positioned below the rotation axis CL2 in a state where the water flow member 52 is disposed at the lowermost position of the movable range.

  52 C of lower collection parts have the inner peripheral part being fixed to the support shaft 53, and have several ribs extended along the radial direction of 52 A of outer peripheral wall parts. In the lower collecting portion 52C, the waste water flowing through the main body pipe 51A flows down through the gap formed between the ribs, while the dust and the like contained in the waste water are collected.

  The support shaft 53 has a rod shape, and an upper end portion thereof is attached to the central portion of the back surface of the stopper lid 55, and a lower end side portion thereof is fixed to the water passage member 52. Therefore, the support protrusion 44 moves up and down, so that when the water passage member 52 moves up and down, the support shaft 53 and the plug lid 55 move up and down together with the water passage member 52.

  The hair catcher 54 extends from the outer periphery of the support shaft 53 toward the outer periphery, and has a function of collecting dust and the like contained in the drainage flowing through the main body pipe 51A.

  The plug lid 55 includes a disc-shaped lid portion 55A made of resin or the like, and an annular packing portion made of an elastically deformable material (for example, rubber or resin) attached to the back outer peripheral side of the lid portion 55A. 55B. In the present embodiment, when the support protrusion 44 is moved downward along with the displacement of the displacement member 22, the plug lid 55 is moved down together with the water passing member 52 and the support shaft 53, and the entire outer peripheral portion of the packing portion 55B is the bottom wall portion. By contacting 102, the drainage port 103 is closed. On the other hand, when the support protrusion 44 moves upward with the displacement of the displacement member 22, the plug lid 55 moves upward together with the water passing member 52 and the support shaft 53, and the packing portion 55 </ b> B is separated from the bottom wall portion 102. Thus, the drainage port 103 is opened.

  In the present embodiment, the support protrusion 44 is in contact with the lower end surface of the outer peripheral wall portion 52A when the drainage port 103 is opened. However, when the drainage port 103 is closed, the support protrusion 44 is connected to the outer peripheral wall portion 52A. It is separated from the lower end surface. Thereby, when the drain outlet 103 is closed, the stopper lid 55 (packing portion 55B) can be reliably brought into contact with the bottom wall portion 102, and good water tightness can be obtained.

  In the present embodiment, the unit 56 including the water passage member 52, the support shaft 53, the hair catcher 54, and the plug lid 55 is removed from the pipe 51 by pulling up the plug lid 55 and the support shaft 53 from the front side of the basin 100. It can be removed at once. When the unit 56 is removed from the pipe 51, the inside of the pipe 51 (main body pipe 51A) has a support protrusion 44 as shown in FIG. 6 (in FIG. 6, the plug lid side guide member 7 and the like are not shown). Only a slightly protruding state is obtained. For this reason, it is possible to improve maintenance and cleaning properties.

  Next, the shape and the like of the support protrusion 44 will be described in detail.

  In the present embodiment, as shown in FIG. 7 (in FIG. 7, the washbasin 100 and the like are not shown) and FIG. 8, the support protrusion 44 has an outer peripheral surface that connects the central axis CL3 and the rotation axis CL2. It is comprised so that it may become a symmetrical shape with respect to the virtual plane VS containing. In addition, an outer peripheral surface 45 positioned on the rotation axis CL2 side and an outer peripheral side surface 46 positioned on the opposite side of the rotation axis CL2 are formed on the outer peripheral surface of the support protrusion 44.

  On the inner peripheral side surface 45, there are a flat central surface 45A located on the virtual plane VS, and a right side surface 45B and a left side surface 45C that are positioned so as to sandwich the central surface 45A and have a flat surface shape, respectively. Is provided. The right side surface 45B and the left side surface 45C each have an inclined surface shape in which the distance to the rotation axis CL2 increases as the distance from the central surface 45A increases. In addition, among the angles formed by the right side surface 45B and the central surface 45A, the angle angle positioned on the central axis CL3 side, and among the angles formed by the left side surface 45C and the central surface 45A, the angle angle positioned on the central axis CL3 side Are each set to a size slightly smaller than 180 °, and as a result, the inner peripheral side surface 45 has a substantially flat shape with a relatively small bulge toward the rotation axis CL2.

  The outer peripheral side surface 46 forms a convex curved surface toward the side opposite to the rotation axis CL2. Further, when viewed from the tip end side of the support protrusion 44, the outer peripheral side surface 46 is positioned in the immediate vicinity of the outer peripheral edge of the rotating portion 41, and along the vertical direction when the rotating portion 41 is rotated. The amount of movement is made as large as possible. However, in the present embodiment, a slight gap is formed between the outer peripheral side surface 46 and the outer peripheral edge of the rotating portion 41 when viewed from the front end side of the support protrusion 44. Thereby, when the rotation part 41 is rotated, the movement inhibition of the support protrusion 44 by the pipe 51 [this movement inhibition occurs at the boundary portion of the main body pipe 51A and the attachment pipe 51B inside the pipe 51, for example, the pipe 51. The so-called “burrs” (protruding pieces) and the like that occurred with the molding during the manufacture of the device are suppressed, and the operating device 2 is operated (the displacement member 22 is displaced). ) When the operability is better.

  In addition, while the water flow member 52 is disposed at the lowermost part of the movable range (that is, the water flow member 52 is disposed at a position where the drainage port 103 is closed), the support protrusion 44 is disposed on the outer periphery. In a state where it is arranged so as to be in contact with the lower end surface of the wall portion 52A (see FIG. 8), the support protrusion 44 has a horizontal width W along the direction orthogonal to its own central axis CL3. It is comprised so that it may become larger than the thickness T of the perpendicular direction along the direction orthogonal to CL3.

  Further, in the present embodiment, in the state where the support protrusion 44 is disposed so as to contact the lower end surface of the outer peripheral wall portion 52A while the water flow member 52 is disposed at the lowermost part of the movable range, Of these, the portion that contacts the lower end surface of the outer peripheral wall 52A (in this embodiment, the right side surface 45B) has a horizontal plane.

  When the rotating portion 41 is rotated to move the water passage member 52 upward, as shown in FIG. 9, the right side surface 45B first contacts the lower end surface of the outer peripheral wall portion 52A, and the rotating portion When 41 is further rotated, the contact portion of the support protrusion 44 with the lower end surface of the outer peripheral wall portion 52A changes, and finally the outer peripheral side surface 46 comes into contact with the lower end surface of the outer peripheral wall portion 52A.

  In addition, in this embodiment, the entire outer peripheral surface of the support protrusion 44 has a smooth shape with no corners along the outer peripheral direction. That is, at least a portion of the support protrusion 44 that contacts the lower end surface of the outer peripheral wall portion 52A has a smooth shape with no corners along the outer peripheral direction of the support protrusion 44, and the rotating portion 41 is rotated. Sometimes, only a part of the support protrusion 44 does not keep in contact with the lower end surface of the outer peripheral wall 52A for a long period of time.

  As described above in detail, according to the present embodiment, the support protrusion 44 is separated from the outer peripheral wall portion 52 </ b> A in a state where the drainage port 103 is closed. Therefore, when the drainage port 103 is closed, the plug lid 55 can be more closely attached to the bottom wall portion 102, and good water tightness can be obtained.

  Furthermore, in a state where the water passage member 52 is disposed at the lowermost part of the movable range and the support protrusion 44 is disposed so as to contact the lower end surface of the outer peripheral wall portion 52A, the support protrusion 44 is disposed in the horizontal direction. The width W is configured to be larger than the thickness T in the vertical direction. Therefore, while improving the strength of the support protrusion 44, as shown in FIG. 9, a large amount of movement S along the vertical direction of the upper surface of the support protrusion 44 (the portion in contact with the lower end surface of the outer peripheral wall portion 52A) is secured. can do. As a result, even if the support projection 44 is configured to be separated from the outer peripheral wall portion 52A in a state where the drain port 103 is closed, the lift amount (vertical movement amount) of the plug lid 55 can be sufficiently increased. Can get a good drainage capacity.

  In particular, in this embodiment, in the state where the support protrusion 44 is disposed so as to contact the lower end surface of the outer peripheral wall portion 52A while the water passage member 52 is disposed at the lowest part of the movable range, The part (the right side surface 45B) that comes into contact with the outer peripheral wall part 52A is formed in a horizontal plane. Therefore, the amount of movement along the vertical direction of the upper surface of the support protrusion 44 (the portion in contact with the outer peripheral wall portion 52A) can be increased. As a result, the lift amount of the plug lid 55 can be increased, and the drainage capacity can be further improved.

  Furthermore, in this embodiment, the site | part which contacts the lower end surface of 52 A of outer peripheral wall parts among the support protrusions 44 has comprised the smooth shape without a corner | angular. Therefore, it is possible to prevent a situation in which only a part of the support protrusion 44 slides with respect to the outer peripheral wall portion 52A for a long period of time when the support protrusion 44 is rotated to open the stopper lid 55. Can do. Thereby, abrasion of the support protrusion 44 can be prevented more reliably, and a decrease in strength and drainage capacity of the support protrusion 44 can be effectively suppressed.

  In addition, the support protrusion 44 is configured such that the outer peripheral surface thereof is symmetrical with respect to the virtual plane VS. Therefore, when the water flow member 52 is moved upward, the support protrusion 44 rotates in the opposite direction to the present embodiment (for example, a structure in which the stopper lid side mechanism portion 4 is turned upside down and attached to the pipe 51. Etc.), the horizontal left side surface 45C comes into contact with the lower end surface of the outer peripheral wall portion 52A. For this reason, the drainage capacity can be further improved as in the case where the right side surface 45B contacts the outer peripheral wall portion 52A. That is, as in the present embodiment, by making the outer peripheral surface of the support protrusion 44 symmetrical with respect to the virtual plane VS, it is possible to improve versatility and attachment flexibility.

  Further, according to the present embodiment, the support protrusion 44 is configured such that the tip thereof does not reach the center (center axis CL1) of the main body pipe 51A, and the protruding amount from the pipe 51 (main body pipe 51A) is extremely small. Has been. Therefore, it is possible to more reliably prevent foreign matters and the like from adhering to the support protrusions 44 and improve hygiene. In addition, the support protrusions 44 are less likely to become an obstacle during cleaning, and the cleaning performance can be improved.

  In addition, in the present embodiment, when the outer peripheral wall portion 52A is placed on the support protrusion 44 (the water passage member 52 is supported by the support protrusion 44 and can be drained), when viewed from above. The center axis CL3 of the support protrusion 44 moves within a range not exceeding the rotation axis CL2 of the rotation part 41. That is, in the present embodiment, in the state where the outer peripheral wall portion 52A is placed on the support protrusion 44, the movement range of the support protrusion 44 along the direction orthogonal to the rotation axis CL2 when viewed from above is It is said to be relatively small. Therefore, in the state where the water passage member 52 is supported by the support protrusion 44 and drainage is possible, the support protrusion 44 with respect to the inner peripheral surface of the pipe 51 (main body pipe 51A) accompanying the rotation of the rotation portion 41. The fluctuation range of the protrusion amount can be kept relatively small. As a result, the protrusion amount of the support protrusion 44 can ensure the stable support of the water passage member 52 (outer peripheral wall portion 52A) by the support protrusion 44, and more reliably adhere foreign matter or the like to the support protrusion 44 during drainage. It can be set to a size that can be prevented. As a result, it is possible to further improve the cleanability and hygiene while ensuring the operational stability of the drain plug device 1.

  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, the outer peripheral surface (outer surface) of the support protrusion 44 is configured to have a symmetrical shape with respect to the virtual plane VS, but the shape of the support protrusion is not limited to this. Absent. Therefore, for example, as illustrated in FIG. 10, the support protrusion 62 may be configured such that its outer peripheral surface has an asymmetric shape with respect to the virtual plane VS. 10, most of the inner peripheral side surface 63 of the support protrusion 62 is formed into a flat surface, and when the rotating portion 41 is rotated to move the water passage member 52 upward, First, the flat surface portion of the inner peripheral surface 63 contacts the lower end surface of the outer peripheral wall portion 52A.

  Further, regarding the support protrusion, while the water passage member 52 is disposed at the lowermost part of the movable range, the support protrusion is disposed so as to be in contact with the lower end surface of the outer peripheral wall portion 52A, and is orthogonal to the central axis CL3. Any shape satisfying that the horizontal width W along the direction to be larger than the vertical thickness T along the direction orthogonal to the central axis CL3 may be used. Therefore, for example, as shown in FIG. 11A, the support protrusion 64 may have an elliptical shape when viewed from the tip side, or as shown in FIG. May have a rounded rectangular shape when viewed from the distal end side, and as shown in FIG. 11C, the support protrusion 66 has a rectangular shape when viewed from the distal end side. May be.

  (B) In the said embodiment, although the rotatable range of the rotation part 41 is set to less than a half circumference, the rotatable range of the rotation part 41 is not specifically limited. Therefore, the pivotable range of the pivoting part 41 may be set to a half or more. In addition, the rotating portion 41 was rotated in a state where the support protrusion 44 was disposed so as to contact the lower end surface of the outer peripheral wall portion 52 while the water passage member 52 was disposed at the lowermost portion of the movable range. Sometimes, when viewed from above, the support protrusion 44 defines a rotatable range of the rotating portion 41 so that its center axis CL3 moves within a range exceeding the rotating shaft CL2 of the rotating portion 41. Also good.

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

  (D) The configuration of the operating device 2 and the installation location in the above embodiment are merely examples. Therefore, as the operating device, instead of the displacement member that reciprocates, a device that rotates (rotates) the displacement member and operates the transmission member 31 along with the rotation (rotation) operation may be used. . Moreover, it is good also as installing an operating device in tank bodies, such as a washbasin and a bathtub, and good also as installing in the structure provided in the vicinity of the tank body.

  (E) In the above embodiment, the stopper lid 55 (packing portion 55B) is configured to close the drainage port 103 by contacting the bottom wall portion 102 (basin 100). The portion 55B) may be configured to close the drain port 103 by contacting a member (for example, the drain port member 57) installed in the washbasin 100.

  DESCRIPTION OF SYMBOLS 1 ... Drain plug apparatus, 4 ... Plug lid side mechanism part, 41 ... Turning part, 44 ... Support protrusion, 51 ... Piping, 52 ... Water flow member, 52A ... Outer peripheral wall part, 53 ... Support shaft, 55 ... Plug lid , 100 ... basin (tank body), 103 ... drain port, CL1 ... (main body tube) central axis, CL2 ... (rotary part) rotational axis, CL3 ... (supporting projection) central axis.

Claims (3)

A plug lid for opening and closing the drain of the tank body;
A support shaft for supporting the stopper lid at its upper end;
While having an annular outer peripheral wall portion arranged along the inner peripheral surface of the predetermined pipe, a water passage member that supports the support shaft;
A pivotable pivot part, and a bottom end surface of the outer peripheral wall part is placed in a state of projecting into the pipe from the pivot part and opening the drain port, thereby supporting the water flow member. A stopper lid side mechanism configured to have a support protrusion, wherein the rotating portion rotates, and the water passing member moves up and down as the support protrusion moves up and down. ,
A drain plug device configured such that the tip of the support protrusion does not reach the center of the pipe,
The support projection is configured to be separable from the outer peripheral wall portion in a state where the drain port is closed,
In the state where the support protrusion is disposed so as to be in contact with the lower end surface of the outer peripheral wall portion while the water passage member is disposed at the lowermost part of the movable range, the support protrusion is orthogonal to its own central axis. A drain plug device characterized in that the horizontal width along the direction of the drain is larger than the thickness of the vertical direction along the direction perpendicular to the center axis of the drain.   While the water passage member is disposed at the lowermost part of the movable range and the support protrusion is disposed so as to be in contact with the lower end surface of the outer peripheral wall portion, the support protrusion is below the outer peripheral wall portion. The drain plug device according to claim 1, wherein a portion that contacts the end surface has a horizontal plane shape.   The drainage according to claim 1 or 2, wherein at least a portion of the support protrusion that contacts the lower end surface of the outer peripheral wall portion has a smooth shape with no corners along the outer peripheral direction of the support protrusion. Stopper device.

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