JP6321936B2 - Drain plug device - Google Patents

Description

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

  The drain plug device is for opening and closing a drain port of a tank body (for example, a bathtub or a basin), and includes a plug lid provided at the drain port and a support shaft mechanism that supports the plug lid. ing. The support shaft mechanism includes a support shaft that supports the stopper lid so as to move up and down, and a cylindrical holding member provided on the outer periphery of the support shaft.

  Further, conventionally, a downward force is applied to the support shaft by a predetermined return spring or the like to connect a tank body or a contact target portion provided on the tank body (for example, a drain port and a drain pipe for connection). For example, there has been proposed a method for more reliably closing the drainage port by bringing the outer edge of the stopper lid into contact with the drainage port member) with a relatively large pressure. In this method, when the outer edge of the plug lid is brought into contact with the tank body or the like with a relatively large pressure, the support shaft is fitted to the plug lid to prevent the plug lid from being detached from the support shaft. (Refer to, for example, Patent Document 1). In the fitting method, for example, as shown in FIG. 7, the support shaft 111 is inserted into an attachment hole 112 </ b> A formed on the back surface of the plug lid 112, and is provided on the inner periphery of a portion where the attachment hole 112 </ b> A is formed. The support shaft 111 is fitted to the plug lid 112 by allowing the claw portion 112B to enter the recess 111A provided on the outer periphery of the support shaft 111.

  By the way, in the said method, since it is necessary to provide a nail | claw part and a recessed part, there exists a possibility of causing the complexity of a structure. Moreover, in the said method, in order to prevent that a stopper lid remove | deviates from a support shaft, it is necessary to deepen a recessed part and to make comparatively large the penetration | invasion amount of the nail | claw part with respect to a recessed part. Therefore, there exists a possibility of causing the fall of cleaning property by presence of a deep recessed part.

  Therefore, a method is known in which a stopper lid is placed on the upper end surface of the support shaft (so-called placement method), and the stopper lid contacts the tank body or the like by its own weight to close the drain port. . According to the method, since it is not necessary to provide a recess or the like, the structure can be simplified and good cleanability can be realized. In this method, the drain opening is opened by lifting the stopper lid by the upward movement of the support shaft. Further, in order to guide the vertical movement of the plug lid due to the movement of the support shaft, a guide portion protruding downward is provided on the back surface of the plug lid. The guide portion is disposed on the outer periphery of the holding member, and moves along the outer periphery of the holding member when the stopper lid moves up and down.

JP2011-241665A

  However, in the mounting method described above, when the support shaft is moved up vigorously, the guide portion may be detached from the support shaft mechanism (holding member), and thus the stopper lid may be detached from the support shaft mechanism. is there.

  The present invention has been made in view of the above circumstances, and is to effectively prevent the stopper lid from coming off from the support shaft mechanism in a so-called placement-type drain plug device.

  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 cylindrical holding member inserted into the drainage port of the tank body, and disposed at the inner periphery of the holding member, and at least an open position on the upper side and a closed position below the open position A support shaft mechanism having a support shaft that can move up and down between,
A stopper lid placed on the upper end surface of the support shaft, at least in a state where the support shaft is disposed at the open position;
The stopper lid has a guide portion in which the holding member is disposed on the inner periphery, and moves along the outer periphery of the holding member as the support shaft moves up and down.
When the support shaft is disposed at the closed position, the drain lid is capable of closing the drain port by contacting the stopper lid with a contact target portion that is a member provided in the tank body or the tank body. A stopper device,
The inner periphery of the guide portion is provided with an inward protrusion that protrudes toward the inner periphery, and the guide portion is elastically deformable along the radial direction,
The outer periphery of the holding member is provided with an outward projection that protrudes toward the outer periphery,
The outward projection is always located above the position where the inward projection is disposed, and can contact the inward projection when the stopper lid is separated from the upper end surface of the support shaft. Drain plug device to do.

  According to the said means 1, it is the structure by which a stopper lid is mounted in the upper end surface of a support shaft, It is comprised so that a drain outlet may be closed when a stopper lid contacts a tank body or a contact object part. Yes. Therefore, there is no need to provide a recess or the like on the support shaft or the like, and the simplification of the structure and good cleanability can be realized.

  On the other hand, since the stopper lid is placed on the support shaft, the stopper lid may come off from the support shaft mechanism when the support shaft is vigorously moved up to open the drain port. However, according to the means 1, when the stopper lid is separated from the upper end surface of the support shaft, the inward protruding portion of the guide portion can contact the outward protruding portion of the holding member. Therefore, it can prevent more reliably that a stopper lid will remove | deviate from a support shaft mechanism.

  Further, the outward projection is configured to be always positioned above the position where the inward projection is disposed. Therefore, when the support shaft and thus the stopper lid are moved up and down during normal use, the inward protrusion does not contact the outward protrusion. As a result, the support shaft and thus the stopper lid can be moved smoothly, and good operability can be ensured.

  Further, in order to always place the outward protrusion above the position of the inward protrusion, the outward protrusion is the lower limit position of the inward protrusion in the normal state (more specifically, the support in which the stopper lid is normally attached). It will be provided at a position that is far away upward from the position of the inward projection when the shaft is disposed at the closed position. Therefore, when the plug cover is not completely attached to the support shaft mechanism, and the inward protrusion is on the outward protrusion, the plug in the normal state is placed when the support shaft is placed at the closed position. Compared with the position of the lid, the position of the plug lid is greatly displaced upward. That is, when the attachment of the stopper lid to the support shaft mechanism is incomplete, the stopper lid protrudes greatly upward. For this reason, it is difficult for the user to attach the plug lid to the support shaft mechanism by visually observing the plug lid or by water flowing out of the tank body (water cannot be accumulated in the tank body). It can be easily recognized that it is complete.

  Mean 2. The drain plug apparatus according to means 1, wherein the upper end surface of the support shaft mechanism is flat in a state where at least the support shaft is disposed at the closed position.

  According to the above means 2, the appearance of the upper end portion of the support shaft mechanism is improved and the appearance quality can be improved in a state where the stopper lid is removed from the support shaft mechanism for cleaning or the like. Moreover, since the large unevenness | corrugation resulting from presence of a support shaft does not exist in the upper end surface of a support shaft mechanism, a support shaft mechanism can be cleaned more easily and cleanability can further be improved.

Means 3. A first magnet is provided at the upper end of the support shaft,
The drain plug according to claim 1 or 2, wherein a second magnet that is attracted to the first magnet is provided in a portion of the plug lid that is disposed above the upper end of the support shaft. apparatus.

  According to the above means 3, the plug lid is pulled toward the support shaft by the two magnets. Therefore, it is difficult for the stopper lid to come off from the support shaft, and it is possible to more effectively prevent the stopper lid from coming off from the support shaft mechanism in combination with the function and effect of the means 1. Further, the stopper lid can be attached to the support shaft in a stable state only by placing the stopper lid on the upper end surface of the support shaft.

  Means 4. The drain plug device according to means 3, wherein the first magnet is provided inside the support shaft.

  According to the means 4, the first magnet does not appear outside the support shaft, and a step or a groove due to the first magnet is not formed outside the support shaft. Accordingly, it is possible to further improve the appearance quality and cleanability.

  Means 5. The drain plug device according to any one of means 1 to 4, wherein the support shaft mechanism includes a return member that applies a downward force to the support shaft.

  According to the means 5, when the support shaft is moved downward to close the drain port, the support shaft can be moved to the closed position more reliably by the force from the return member. Therefore, when closing the drain port, for example, the support shaft does not return to the closed position due to the presence of foreign matter or the like, and the plug lid can be effectively prevented from floating from the tank body or the like. As a result, the stopper lid can be more reliably brought into close contact with the tank body and the like, and the drain outlet can be more reliably closed.

  Furthermore, when the means 3 is used together, the plug lid is attracted to the support shaft by both magnets, and therefore the force from the return member is also transmitted to the plug lid. Therefore, when the drain outlet is closed, the plug lid can be strongly pressed against the tank body or the like by the force applied from the return member. As a result, the drain outlet can be more reliably closed.

  Means 6. The drain plug according to any one of means 1 to 5, wherein the inward projection moves along the outer peripheral surface of the holding member when the plug lid moves with the vertical movement of the support shaft. apparatus.

  According to the means 6, when the stopper shaft is moved by moving the support shaft up and down, the movement of the stopper lid is guided by the inward projection. Therefore, when the stopper lid is moved, the stopper lid is less likely to rattle, and the stopper lid can be more reliably brought into contact with a target portion of the tank body or the like when the drain outlet is closed. As a result, it is possible to make the stopper lid tightly adhere to the tank body and the like, and the drain outlet can be more reliably closed.

  Mean 7 Any of the means 1 to 6 characterized in that the inner peripheral surface of the guide part moves along the outermost part of the outward projecting part when the stopper lid moves as the support shaft moves up and down. The drain plug device according to crab.

  According to the means 7, the movement of the plug lid is guided by the outward projection when the stopper lid is moved by moving the support shaft up and down. Therefore, the same function and effect as those of the means 6 can be obtained, and the drain outlet can be more reliably closed.

It is a partially broken front view which shows the drain plug apparatus in the state which closed the drain outlet. It is a partially broken front view which shows the drain plug apparatus in the state which opened the drain outlet. (A) is a partially broken enlarged front view showing the positional relationship between the upper end surface of the support shaft and the upper end surface of the outer cylinder portion arranged at the closed position, and (b) is the position at which the support shaft is closed. It is an expansion perspective view which shows the upper end surface of the support shaft mechanism in the state arrange | positioned in. It is a partially broken front view which shows the 1st, 2nd magnet, etc. in 2nd Embodiment. It is a partially broken front view which shows the return member etc. in 3rd Embodiment. It is a partially broken front view which shows the support shaft etc. in another embodiment. It is a partially broken front view which shows an example of the drain plug apparatus in a prior art.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1, the drain plug device 1 is attached to a bathtub 100 as a tank body, and includes a drain port member 2, a plug lid 3, and a support shaft mechanism 4. In addition, the bathtub 100 is a molded product, and the drain wall 102 for discharging the water in the bathtub 100 is provided in the bottom wall part 101 thereof.

  The drain port member 2 is formed in a cylindrical shape by resin or the like, and includes a male screw portion 21 provided on the outer peripheral surface and an annular flange portion 22 protruding from the upper end portion of the drain port member 2 to the outer peripheral side. Further, the drain port member 2 is configured so that the cylindrical portion having the male screw portion 21 on the outer periphery is inserted into the drain port 102 and the flange portion 22 is placed on the surface of the bottom wall portion 101. It is inserted in the mouth 102.

  In addition, the drain port 102 and the pipe 103 are connected in series by attaching a cylindrical pipe 103 serving as a flow path of water discharged from the bathtub 100 to the drain port member 2. More specifically, the pipe 103 includes a female screw portion 103A capable of screwing the male screw portion 21 on the inner peripheral surface of its own end portion, and the male screw portion 21 is screwed into the female screw portion 103A, so that the flange portion 22 is engaged. The bottom wall 101 is sandwiched between the pipe 103 and the pipe 103 so that the pipe 103 is attached to the drain port member 2 and the drain port member 2 and the pipe 103 are connected in series.

  Furthermore, an annular seal member 5 made of an elastic material such as rubber or resin is provided between the back surface of the bottom wall portion 101 and the upper end surface of the pipe 103. As the drain port member 2 is screwed to the pipe 103, the seal member 5 is sandwiched between the back surface of the bottom wall portion 101 and the upper end surface of the pipe 103, and as a result, drainage from the drain port 102. In order to prevent water leakage at times. In order to more reliably prevent water leakage, an annular seal member made of an elastic material may be disposed between the flange portion 22 and the surface of the bottom wall portion 101.

  The plug lid 3 is made of metal, resin, or the like, and is provided at the drain port 102. The plug lid 3 includes an umbrella-shaped portion 31 whose surface appears on the surface of the bathtub 100 and a guide portion 32 provided at the center of the back surface of the umbrella-shaped portion 31. The umbrella-shaped part 31 has its surface covered with a thin covering part 31A made of stainless steel or the like, and as a result, the appearance quality is improved.

  Moreover, the guide part 32 is formed in the cylinder shape with resin, and is provided with the notch part (not shown) extended along the own axial direction intermittently with two or more along the circumferential direction. And the guide part 32 is made elastically deformable along a radial direction by changing the width | variety of the said notch part.

  Further, an annular seal portion 33 made of an elastic material such as rubber is provided on the back side outer peripheral portion of the umbrella-shaped portion 31 in the plug lid 3. And the drain port 102 is comprised by the outer periphery whole periphery of the annular seal part 33 contacting with the drain port member 2 as a contact object part. In the present embodiment, the plug lid 3 is configured so that its specific gravity is greater than 1 (that is, sinks in water), and the drain port 102 can be closed only by its own weight.

  The support shaft mechanism 4 includes a holding member 41 and a support member 42 disposed on the inner periphery of the holding member 41.

  The holding member 41 is formed of a predetermined resin, and is provided on the outer periphery of the cylindrical outer cylinder portion 41A that holds the support member 42 on its inner periphery, and on the outer periphery of the outer cylinder portion 41A. 2 and an attachment portion 41B having an annular shape along the inner peripheral shape. The outer cylinder part 41A and the attachment part 41B are connected by a plurality of connection parts 41C provided intermittently along the circumferential direction, and the central axis of the outer cylinder part 41A and the central axis of the attachment part 41B coincide. It is configured as follows. Further, the connecting portion 41 </ b> C is configured to be disposed in the notch portion of the guide portion 32 in a state where at least the drain port 102 is closed.

  In addition, an annular outer cylinder lid portion 41D protruding radially inward is provided at the upper end portion of the outer cylinder portion 41A, and the center of the outer cylinder portion 41A is provided on the inner periphery of the outer cylinder lid portion 41D. A hole 41E having a circular shape in plan view extending along the axial direction is formed. Furthermore, although the lower end part of 41 A of outer cylinder parts is opening, the lower support part 41F which protrudes to a radial inside is formed in the lower end part.

  A plurality of slits (not shown) extending along the central axis direction of the outer cylinder portion 41A are provided on at least the lower end side of the outer cylinder portion 41A. Then, the support member 42 is inserted from the lower end side opening of the outer cylinder portion 41A expanded by expanding the slit to the inner periphery of the outer cylinder portion 41A, and then the diameter expansion of the lower end side opening is released. By doing so, it is arrange | positioned in the inner periphery of 41 A of outer cylinder parts in the state pinched | interposed by 41 D of outer cylinder covers, and the lower support part 41F.

  Furthermore, the holding member 41 is attached to the drain port member 2 and is inserted into the drain port 102 as a result of the mounting portion 41B being locked to the stepped recess 23 provided on the inner periphery of the drain port member 2. It has been installed. In the state where the holding member 41 is attached to the drain port member 2, the lower end side opening of the outer cylinder portion 41A cannot be expanded in diameter, thereby preventing the support member 42 from coming off from the outer cylinder portion 41A.

  The support member 42 is made of resin or the like, and includes a rod-shaped support shaft 42A and a cylindrical inner cylinder portion 42B positioned on the outer periphery of the support shaft 42A. The support shaft 42A is configured such that its upper end can pass through the hole 41E.

  In addition, the support shaft 42A is configured to be able to contact an end portion of a transmission member 81 (for example, a metal wire) for transmitting displacement of an operation unit (not shown) configured by a push button or the like. ing. Then, along with the displacement of the operation portion, the transmission shaft 81 reciprocates on the inner periphery of the outer skin 82 provided on the outer periphery thereof, so that the support shaft 42A moves up and down with respect to the bathtub 100. . Specifically, the support shaft 42A is an upper open position due to the displacement of the operation portion (more specifically, as shown in FIG. 2, the support shaft 42A is an arrangement position when the drainage port 102 is opened. 42A, a position slightly below the most elevated end of 42A), and a closing position below the opening position (more specifically, as shown in FIG. 1, the arrangement position when closing the drain port 102). It can be moved up and down. Further, the support shaft 42 </ b> A is configured such that every time the operation unit is operated, the locking at the opened position and the downward movement accompanying the unlocking are alternately performed.

  Further, in the present embodiment, the plug lid 3 is attached to the support shaft mechanism 4 by inserting the outer tube portion 41A into the guide portion 32 thereof, and at least the support shaft as shown in FIG. In a state where 42A is disposed at the open position, the support shaft 42A is placed on the upper end surface. That is, the method of attaching the plug lid 3 to the support shaft 42A is not a method in which the plug lid 3 is fixed to the support shaft 42A, but a method in which the plug lid 3 is simply placed on the support shaft 42A. The plug lid 3 is not fixed to the shaft 42A. Then, by disposing the support shaft 42A at the open position, the plug lid 3 is pushed up by the support shaft 42A, and as a result, the drain port 102 is opened. On the other hand, as shown in FIG. 1, by arranging the support shaft 42 </ b> A at the closed position, the annular seal portion 33 of the plug lid 3 comes into contact with the drain port member 2 and the drain port 102 is closed. It is like that. In the present embodiment, the plug lid 3 is separated from the upper end surfaces of the support shaft 42A and the outer cylinder portion 41A in a state in which the drain port 102 is closed (that is, the support shaft 42A is disposed at the closed position). However, the stopper lid 3 may be configured to come into contact with the upper end surface of the support shaft 42 </ b> A in a state where the drain outlet 102 is closed.

  Further, in the present embodiment, an annular inward protrusion 32A that protrudes toward the inner periphery is provided on the inner periphery of the guide portion 32, and a holding member 41 (outer cylinder) disposed on the outer periphery of the guide portion 32 is provided. On the outer periphery of the portion 41A), an annular outward projecting portion 41G protruding toward the outer periphery is provided.

  The outward protrusion 41G is inwardly protruded when the holding member 41 (outer cylinder part 41A) is normally disposed on the inner periphery of the guide part 32 (that is, when the holding member 41 is not detached from the guide part 32). It is configured to be always above the position where the portion 32A is arranged. In addition, the diameter of the virtual circle that passes through the outermost peripheral portion of the outward projection 41G is configured to be larger than the diameter of the virtual circle that passes through the innermost peripheral portion of the inward projection 32A. As a result, the outward projecting portion 41G is supported by the support shaft 42A when, for example, the support shaft 42A moves up vigorously in the state in which the holding member 41 (outer cylinder portion 41A) is disposed on the inner periphery of the guide portion 32. When the stopper lid 3 is separated from the upper end surface of the stopper (when the stopper lid 3 is likely to be detached from the support shaft 42A), it can come into contact with the inward protrusion 32A.

  Further, in the present embodiment, as shown in FIGS. 3A and 3B, the outer cylinder portion 41A along the axial direction of the support shaft 42A in a state where the support shaft 42A is disposed at the closed position. The arrangement position of the upper end surface and the arrangement position of the upper end surface of the support shaft 42A along the axial direction of the support shaft 42A are configured to be substantially the same. Thereby, in a state where the support shaft 42A is disposed at the closed position, there is almost no unevenness between the upper end surface of the outer cylinder portion 41A and the upper end surface of the support shaft 42A, and the upper end surface of the support shaft mechanism 4 Is flat. The arrangement position of the upper end surface of the outer cylinder portion 41A along the axial direction of the support shaft 42A and the arrangement position of the upper end surface of the support shaft 42A along the axial direction of the support shaft 42A are substantially the same. Is not only when the arrangement position of the upper end surface of the outer cylinder portion 41A and the arrangement position of the upper end surface of the support shaft 42A are at the same position along the axial direction of the support shaft 42A, This includes a case where the arrangement position of the upper end surface of the support shaft 42A is slightly shifted (for example, 1 mm or less) along the axial direction of the support shaft 42A with respect to the arrangement position.

  Furthermore, in the present embodiment, as shown in FIG. 1, the outer diameter of the portion of the holding member 41 (outer cylinder portion 41A) where the inward projection 32A is disposed on the outer periphery is the innermost periphery of the inward projection 32A. Although it is configured to be smaller than the diameter of the imaginary circle passing through the part, the difference in diameter between the two is very small (for example, 1 mm or less, more preferably 0.5 mm or less). Moreover, although the internal diameter of the site | part in which the outward protrusion 41G is arrange | positioned in an inner periphery among the guide parts 32 is comprised so that it may become larger than the diameter of the virtual circle which passes the outermost periphery part of the outward protrusion 41G. The diameter difference between them is very small (for example, 1 mm or less, more preferably 0.5 mm or less). With these configurations, when the stopper lid 3 moves as the support shaft 42A moves up and down, the inward projection 32A moves along the outer peripheral surface of the holding member 41 (outer cylinder portion 41A) and the guide portion 32. Is moved along the outermost peripheral portion of the outward projecting portion 41G. That is, the movement of the plug lid 3 is guided by the inward protrusion 32A and the outward protrusion 41G.

  As described in detail above, according to the present embodiment, the stopper lid 3 is placed on the upper end surface of the support shaft 42A, and the stopper lid 3 comes into contact with the drain port member 2 by its own weight. The drain port 102 is configured to be closed. Therefore, simplification of the structure and good cleanability can be realized.

  Furthermore, in this embodiment, when the stopper lid 3 is separated from the upper end surface of the support shaft 42A, such as when the support shaft 42A is moved up vigorously, the inward projection 32A can come into contact with the outward projection 41G. It has become. Therefore, it is possible to more reliably prevent the stopper lid 3 from being detached from the support shaft mechanism 4.

  Further, the outward projecting portion 41G is configured to be always positioned above the position where the inward projecting portion 32A is disposed. Therefore, when the support shaft 42A and thus the stopper lid 3 are moved up and down during normal use, the inward protrusion 32A does not come into contact with the outward protrusion 41G. As a result, the support shaft 42A and thus the stopper lid 3 can be moved smoothly, and good operability can be ensured.

  Furthermore, the outward projection 41G is a lower limit position of the inward projection 32A in the normal state (more specifically, the position of the inward projection 32A when the support shaft 42A to which the plug lid 3 is normally attached is disposed at the closed position). ) At a position far away from the upper side. Therefore, when the stopper cover 3 is not completely attached to the support shaft mechanism 4 and the inward protrusion 32A is placed on the outward protrusion 41G, the support shaft 42A is disposed at the closed position. In addition, the position of the plug lid 3 is greatly shifted upward as compared with the position of the plug lid 3 at the normal time. That is, when the attachment of the stopper lid 3 to the support shaft mechanism 4 is incomplete, the stopper lid 3 protrudes greatly upward. Therefore, when the stopper lid 3 is visually recognized or water flows out of the bathtub 100 (water cannot be stored in the bathtub 100), the stopper lid 3 with respect to the support shaft mechanism 4 is informed to the user. It is possible to easily recognize that the mounting is incomplete.

  In the present embodiment, the upper end surface of the support shaft mechanism 4 is configured to be flat when at least the support shaft 42A is disposed at the closed position. Therefore, the appearance of the upper end portion of the support shaft mechanism 4 is improved in the state where the stopper lid 3 is removed from the support shaft mechanism 4 for cleaning and the like, and the appearance quality can be improved. Moreover, since the large unevenness | corrugation resulting from presence of 42 A of support shafts does not exist in the upper end surface of the support shaft mechanism 4, the support shaft mechanism 4 can be cleaned more easily, and cleanability can further be improved.

In addition, in the present embodiment, when the stopper lid 3 moves along with the vertical movement of the support shaft 42A, the inward projection 32A moves along the outer peripheral surface of the holding member 41 (outer cylinder portion 41A), and the guide The inner peripheral surface of the portion 32 moves along the outermost peripheral portion of the outward projection 41G. Therefore, rattling of the plug lid 3 during the movement of the plug lid 3 can be extremely effectively suppressed, and the plug lid 3 (annular seal portion 33) is attached to the drain port member 2 when the drain port 102 is closed. The target part can be contacted more reliably. As a result, the plug lid 3 (annular seal portion 33) can be more securely adhered to the drain port member 2, and the drain port 102 can be more reliably closed.
[Second Embodiment]
Next, the second embodiment will be described focusing on differences from the first embodiment.

  In the second embodiment, as shown in FIG. 4, a columnar (disk-shaped) first magnet 51 is provided at the upper end of the support shaft 42A. The first magnet 51 is provided inside the support shaft 42A and is configured not to appear outside the support shaft 42A.

  Furthermore, a second magnet 52 that is attracted to the first magnet 51 is provided in a portion of the stopper lid 3 that is disposed above the upper end portion of the support shaft 42A. In the second embodiment, the second magnet 52 has a columnar shape, and the outer diameter thereof is the same as the outer diameter of the first magnet 51 or greater than or equal to the outer diameter of the first magnet 51.

  As described above, according to the second embodiment, the plug lid 3 is attracted to the support shaft 42A by the both magnets 51 and 52, so that the plug lid 3 is hardly detached from the support shaft 42A, and the inward protrusion 32A and the outward direction are prevented. In combination with the provision of the protrusion 41G, the stopper lid 3 can be more effectively prevented from coming off from the support shaft mechanism 4. Furthermore, the plug lid 3 can be attached to the support shaft 42A in a stable state only by placing the plug lid 3 on the upper end surface of the support shaft 42A.

In addition, according to the second embodiment, the first magnet 51 does not appear outside the support shaft 42A, and a step, a groove, or the like due to the first magnet 51 is formed outside the support shaft 42A. It will not be done. Accordingly, it is possible to further improve the appearance quality and cleanability.
[Third Embodiment]
Next, the third embodiment will be described focusing on the differences from the first embodiment.

  In the third embodiment, as shown in FIG. 5, a return member 61 made of a spring is provided between the outer periphery of the support shaft 42A and the inner periphery of the inner cylinder portion 42B. The return member 61 is provided at the upper end portion of the inner cylindrical portion 42B, and is sandwiched between an annular protruding portion 42C protruding radially inward and a stepped portion 42D provided on the lower side of the support shaft 24A. It has become. For this reason, a force directed downward is applied to the support shaft 42 </ b> A by the return member 61.

  As described above, according to the third embodiment, when the support shaft 42A is moved down to close the drain port 102, the support shaft 42A is more reliably moved to the closed position by the force from the return member 61. Can be moved. Therefore, when the drain port 102 is closed, the support shaft 42 </ b> A does not return to the closed position, and the plug lid 3 can be effectively prevented from floating from the drain port member 2. As a result, the plug lid 3 can be more closely attached to the drain port member 2 and the drain port 102 can be more reliably closed.

  When the first and second magnets 51 and 52 are provided in addition to the return member 61 as in the second embodiment, the plug lid 3 is attached to the support shaft 42A by both the magnets 51 and 52. Therefore, the force from the return member 61 is also transmitted to the plug lid 3. Therefore, when the drain port 102 is closed, the plug lid 3 can be strongly pressed against the drain port member 2 by the force applied from the return member 61, and the drain port 102 can be more reliably closed.

  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 second embodiment, the first magnet 51 is provided inside the support shaft 42A. However, the first magnet 51 is not necessarily provided inside the support shaft 42A, and the support shaft 42A is not necessarily provided. It is good also as providing in the outer surface part.

  (B) In the above embodiment, in the state where the support shaft 42A is disposed at the closed position, the position of the upper end surface of the outer cylinder portion 41A along the axial direction of the support shaft 42A and the axial direction of the support shaft 42A The upper end surface of the support shaft mechanism 4 is configured to be substantially the same, so that the upper end surface of the support shaft mechanism 4 is flat. However, the method of flattening the upper end surface of the support shaft mechanism 4 is not limited to this. Therefore, for example, as shown in FIGS. 6A and 6B, the upper end portion of the support shaft 42A is formed to have a relatively large diameter, and the outer diameter of the upper end portion of the support shaft 42A is set to the outer diameter of the outer cylinder portion 41A. The upper end portion of the support shaft 42A is always disposed above the outer cylinder portion 41A (that is, the upper end surface of the support shaft mechanism 4 is constituted by the upper end surface of the support shaft 42A). Shall be). In addition, the upper end surface of the support shaft 42A may be formed flat so that the upper end surface of the support shaft mechanism 4 is flat. Note that, by providing the upper end portion of the support shaft 42A with a relatively large diameter, the size (outer diameter) of the first magnet 51 is increased in providing the first magnet 51 at the upper end portion of the support shaft 42A. Can do. In this case, the magnetic force of the first magnet 51 can be increased more effectively and more easily. By increasing the magnetic force of the first magnet 51, the pulling force of the second magnet 52 against the first magnet 51 side can be further increased, and the stopper lid 3 can be prevented from coming off from the support shaft mechanism 4. This can be achieved more effectively.

  In addition, it is good also as forming the said large diameter part of 42 A of support shafts by providing the disk-shaped member provided separately in the upper end part of 42 A of support shafts.

  (C) In the above embodiment, when the stopper lid 3 moves along with the vertical movement of the support shaft 42A, the inward projection 32A moves along the outer peripheral surface of the holding member 41 (outer cylinder portion 41A), and the guide The part 32 is configured such that the inner peripheral surface thereof moves along the outermost peripheral part of the outward projecting part 41G. On the other hand, when the stopper lid 3 moves with the vertical movement of the support shaft 42A, only the inward projection 32A moves along the outer peripheral surface of the holding member 41 (outer cylinder portion 41A). Alternatively, only the inner peripheral surface of the guide portion 32 may be configured to move along the outermost peripheral portion of the outward projecting portion 41G.

  (D) In the above embodiment, the annular seal portion 33 of the plug lid 3 is configured to come into contact with the drain port member 2 when the drain port 102 is closed. The lid 3 (annular seal portion 33) does not necessarily have to contact the drain port member 2. Therefore, for example, the drain outlet 102 may be closed when the stopper lid 3 (annular seal portion 33) contacts the bathtub 100.

  (E) The configuration of the pipe 103 in the above embodiment is an exemplification, and the configuration of the pipe 103 is not particularly limited. Therefore, for example, a ring-shaped pipe having an internal thread portion on the inner peripheral surface may be used as the pipe 103.

  (F) In the said embodiment, although the drain plug apparatus 1 is attached to the bathtub 100 as a tank body, the attachment object of the drain plug apparatus 1 is not restricted to the bathtub 100. FIG. Therefore, the drain plug device 1 may be attached to a tank body (for example, a bathroom vanity or a sink) other than the bathtub.

  (G) In the above embodiment, the plug lid 3 is configured such that its specific gravity is greater than 1 (that is, sinks in water). However, when the magnets 51 and 52 are provided, The specific gravity of the lid 3 may be 1 or less. By setting the specific gravity of the plug lid 3 to 1 or less, the force required when opening and closing the drain port 102 is reduced, and good operability can be obtained. If the specific gravity of the plug lid 3 is 1 or less, the plug lid 3 is easily detached from the support shaft mechanism 4 when the support shaft 42A is moved up vigorously, but the inward projection 32A and the outward projection 41G. Therefore, it is possible to prevent the stopper lid 3 from coming off more reliably.

  DESCRIPTION OF SYMBOLS 1 ... Drain plug apparatus, 2 ... Drain port member (contact part), 3 ... Plug lid, 4 ... Support shaft mechanism, 32 ... Guide part, 32A ... Inward protrusion, 41 ... Holding member, 41G ... Outward protrusion, 42A ... support shaft, 51 ... first magnet, 52 ... second magnet, 61 ... return member, 100 ... bathtub (tank), 102 ... drainage port.

Claims (7)

A cylindrical holding member inserted into the drainage port of the tank body, and disposed at the inner periphery of the holding member, and at least an open position on the upper side and a closed position below the open position A support shaft mechanism having a support shaft that can move up and down between,
A stopper lid placed on the upper end surface of the support shaft, at least in a state where the support shaft is disposed at the open position;
The stopper lid has a guide portion in which the holding member is disposed on the inner periphery, and moves along the outer periphery of the holding member as the support shaft moves up and down.
When the support shaft is disposed at the closed position, the drain lid is capable of closing the drain port by contacting the stopper lid with a contact target portion that is a member provided in the tank body or the tank body. A stopper device,
The inner periphery of the guide portion is provided with an inward protrusion that protrudes toward the inner periphery, and the guide portion is elastically deformable along the radial direction,
The outer periphery of the holding member is provided with an outward projection that protrudes toward the outer periphery,
The outward projection is always located above the position where the inward projection is disposed, and can contact the inward projection when the stopper lid is separated from the upper end surface of the support shaft. Drain plug device to do.   2. The drain plug device according to claim 1, wherein an upper end surface of the support shaft mechanism is flat at least in a state where the support shaft is disposed at the closed position. A first magnet is provided at the upper end of the support shaft,
3. The drain according to claim 1, wherein a second magnet that is attracted to the first magnet is provided in a portion of the stopper lid that is disposed above the upper end portion of the support shaft. Stopper device.   The drain plug device according to claim 3, wherein the first magnet is provided inside the support shaft.   The drain plug device according to any one of claims 1 to 4, wherein the support shaft mechanism includes a return member that applies a downward force to the support shaft.   The said inward protrusion part moves along the outer peripheral surface of the said holding member, when the said plug lid moves with the up-and-down movement of the said support shaft, The any one of Claims 1 thru | or 5 characterized by the above-mentioned. Drain plug device.   The guide part moves along the outermost part of the outward projecting part when the stopper lid moves with the vertical movement of the support shaft. The drain plug device according to any one of claims.

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