JP7345216B2 - Drain plug device - Google Patents

Description

The present invention relates to a drain plug device having a plug lid that can open and close the drain port of a tank body.

A drain plug device includes a plug lid provided on a drain port of a tank body (for example, a bathtub, a washbowl, etc.), and opens and closes the drain port by moving the plug lid up and down.

The drain plug device may include a flow path component that constitutes a flow path for drainage flowing through the drain port (for example, a cylindrical drain member inserted into the drain port, piping connected in series with the drain port member, etc.). ), a support shaft mechanism having a rod-shaped support shaft that supports the stopper lid in a vertically movable state, and an attachment for holding the support shaft mechanism inside the flow path structure. A transmission member (for example, a wire, etc.) that can be moved back and forth in response to the displacement (operation) of a predetermined operation part (for example, an operation button, an operation handle, etc.) is generally known (for example, as disclosed in patent literature). (See 1st prize). In such a drain plug device, the transmission member moves back and forth in response to the displacement of the operating portion, so that the support shaft and the plug lid move up and down, thereby switching the open/closed state of the drain port.

In addition, the attachment member is a cylindrical holding member that is equipped with a support protrusion that protrudes inward on the inner periphery of the lower part, and holds the support shaft mechanism on the inner periphery while the support shaft mechanism is supported by the support protrusion. There are some examples that include a part, an outer ring part that is annular as a whole and is attached to the inner surface of the flow path forming part, and a connecting part that connects the holding part and the outer ring part (see, for example, Patent Document 2). . The holding part is provided with a slit that opens at the lower end, and by widening the slit, the lower opening of the holding part can be enlarged.

Japanese Patent Application Publication No. 2016-132897 Japanese Patent Application Publication No. 2007-327311

Conventionally, the method of arranging the support shaft mechanism in the holding part is to widen the slit to enlarge (open) the lower opening of the holding part, and then insert the support shaft mechanism into the holding part through this enlarged lower opening. By pushing the support shaft mechanism into the holding part from the lower opening side of the holding part, the lower opening is enlarged (the slit is widened), and finally, the enlarged lower opening A method is known in which the support shaft mechanism is inserted into the holding portion through the support shaft. According to these methods, by enlarging the lower opening of the holding part, the support shaft mechanism can pass through the support protrusion relatively easily, making it easy to arrange (insert) the support shaft mechanism into the holding part. can be done. Therefore, it is possible to obtain sufficiently good installation workability, but on the other hand, there is also a desire to further improve installation workability.

The present invention has been made in view of the above-mentioned circumstances, and its object is to provide a drain plug that allows the support shaft mechanism to be more easily disposed within the holding part and provides extremely excellent installation workability. The goal is to provide equipment.

In the following, each means suitable for solving the above object will be explained in terms of sections. Note that effects specific to the corresponding means will be added as necessary.

Means 1. A stopper lid for opening and closing a drain provided in the tank body,
a flow path configuration part whose interior constitutes a flow path for drainage flowing through the drain port;
a support shaft mechanism having a rod-shaped support shaft that supports the stopper lid at its upper end and can move the stopper lid up and down by its own vertical movement;
A support projection protruding inward is provided on the lower inner periphery, and a cylindrical holding portion is provided that holds the support shaft mechanism on the inner periphery while the support shaft mechanism is supported by the support projection. , an attachment member provided within the flow path configuration section,
A drain plug device configured to switch the open/closed state of the drain port by vertical movement of the support shaft,
The holding part is provided with a slit that opens at the lower end, and is configured such that the lower opening of the holding part expands as the slit widens.
The support shaft mechanism includes a cylindrical case portion that holds the support shaft on its inner periphery in a vertically movable state,
Below the supporting protrusion in the holding part, a cylindrical insertion guide part projects downward from the lower end of the supporting protrusion, forms the lower opening, and is capable of being inserted into the case part. A drain plug device characterized by being provided with.

According to the above means 1, a cylindrical insertion guide part through which the case part can be inserted is provided at the lower part of the holding part. Therefore, when disposing (inserting) the support shaft mechanism into the holding part, by inserting the case part into the insertion guide part, the holding part and the support shaft mechanism can be easily aligned in a straight line. It becomes possible. That is, it is possible to easily set the relative positional relationship between the holding part and the support shaft mechanism to the most suitable state for insertion of the support shaft mechanism into the holding part. Therefore, the support shaft mechanism can be more easily disposed (inserted) into the holding portion, and the installation workability can be further improved.

In addition, it is more preferable that the insertion guide part has an inner diameter that is substantially the same as the outer diameter of the case part when the lower opening of the holding part is not enlarged. In this case, the case part can be inserted into the insertion guide part without enlarging the lower opening of the holding part, and it is easier to arrange the holding part and the support shaft mechanism in a straight line. becomes. Thereby, the installation workability can be further improved. Note that "almost the same" does not mean that they are exactly the same, but also that there is a slight difference (for example, 2 mm or less, more preferably 1 mm or less) between the inner diameter of the insertion guide part and the outer diameter of the case part. This is intended to include cases where there is a difference in diameter.

Means 2. 2. The drain plug device according to means 1, wherein the supporting protrusion has a diameter-reducing surface that is continuous with the inner circumferential surface of the insertion guide portion and whose inner diameter gradually decreases upward.

According to the above means 2, when disposing (inserting) the support shaft mechanism into the holding part, the support shaft mechanism is pushed into the inside of the holding part while contacting the reduced diameter surface of the support protrusion. This allows the lower opening of the holding portion to be enlarged. As a result, installation workability can be further improved.

Means 3. The support shaft has an upper portion protruding from the case portion,
The upper part of the support shaft is configured to be close to or in contact with the inner surface of the support protrusion when the case part is inserted into the insertion guide part in order to arrange the support shaft mechanism in the holding part. The drain plug device according to means 1 or 2, characterized in that:

In addition, "a state in which the upper part of the support shaft is close to the inner surface of the support protrusion" means, for example, a state in which the upper part of the support shaft is slightly (for example, 1 mm or less) away from the inner surface of the support protrusion. .

According to the above means 3, when the case part is inserted into the insertion guide part, the upper part of the support shaft is close to or in contact with the inner surface of the support protrusion. Therefore, when the case part is inserted into the insertion guide part, the support shaft mechanism can be supported by both the support protrusion and the insertion guide part, and the holding part and the support shaft mechanism are arranged in a straight line. Can be maintained stably. Thereby, the support shaft mechanism can be more easily disposed (inserted) into the holding portion, and the installation workability can be further improved.

FIG. 3 is a sectional view of the drain plug device. It is a perspective view of a stopper lid. It is a perspective view of a stopper lid main body part. It is a perspective view of an attachment member. It is a top view of an attachment member etc. FIG. 6 is a cross-sectional view taken along line JJ in FIG. 5 with the bathtub and the like omitted. FIG. 3 is a perspective view of the attachment member for explaining that the lower opening of the holding portion is expanded by pressing the outer ring portion. FIG. 7 is a partially cutaway front view of the attachment member and the like, showing a state in which the case portion is inserted into the insertion guide portion when the support shaft mechanism is disposed within the holding portion.

An embodiment will be described below 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. The bathtub 100 includes a bottom part 101 forming the bottom surface thereof, and a drain port 102 is formed through the bottom part 101.

The drain plug device 1 includes a drain port member 2, piping 3, an attachment member 4, a support shaft mechanism 5, and a plug lid 6.

The drain port member 2 is formed in a cylindrical shape and is inserted into the drain port 102 such that its central axis and the center axis of the drain port 102 substantially coincide with each other. Further, the drain port member 2 includes a flange portion 21 formed to protrude radially outward at the upper end thereof, and a male thread portion 22 formed on the outer periphery below the flange portion 21 .

Furthermore, on the inner periphery of the drain port member 2, a mounting protrusion 23 formed to protrude inward and a mounting recess (not shown) that is recessed outward are provided on the inner circumference of the drain port member 2. A plurality of them are formed alternately along the circumferential direction. The attachment protrusion 23 and the attachment recess function as a portion to which the attachment member 4 is attached.

The pipe 3 has a bent cylindrical shape, and is provided with a female threaded portion 31 on the inner periphery of one end (upper end) into which the male threaded portion 22 can be screwed. Then, while inserting the drain port member 2 into the drain port 102, the male threaded portion 22 is screwed into the female thread portion 31, and the bottom surface portion 101 is sandwiched between the collar portion 21 and the upper end surface of the pipe 3. 3 are connected, and both are attached to the bathtub 100.

In this embodiment, an annular sealing member 7 made of an elastically deformable material (for example, resin, rubber, etc.) is disposed between the upper end surface of the pipe 3 and the back surface of the bottom surface portion 101. There is. The seal member 7 prevents water from leaking between the drain port member 2 and piping 3 and the bathtub 100.

Further, in this embodiment, the inside of the drain port member 2 and the pipe 3 constitute a flow path for drainage flowing through the drain port 102. Therefore, in this embodiment, the drain port member 2 and the piping 3 constitute the flow path forming section 8 .

The attachment member 4 is for holding the support shaft mechanism 5 in the drainage flow path, and is arranged inside the flow path configuration section 8 . The configuration of the attachment member 4 will be detailed later.

The support shaft mechanism 5 is for moving the stopper lid 6 up and down, and includes a cylindrical case portion 51 and a rod-shaped (column-shaped) support shaft 52. The case portion 51 is held in a vertically immovable state by an attachment member 4 (a holding portion 43 to be described later) disposed on its outer periphery. On the other hand, the case portion 51 holds the support shaft 52 on its inner periphery in a vertically movable state.

The upper part of the support shaft 52 protrudes from the case part 51, and supports the stopper lid 6 at the upper part. The stopper lid 6 can be moved up and down by vertical movement of the support shaft 52. However, in this embodiment, the upper part of the support shaft 52 is not attached to the faucet lid 6, and is configured such that the faucet lid 6 is simply placed thereon at least when the drain port 102 is in the open state. . When the drain port 102 is in the closed state, the packing portion 62 (described later) comes into contact with the drain port member 2, so that the upper part of the support shaft 52 is separated from the stopper lid 6 (floating state). It is composed of Thereby, the packing part 62 can be brought into close contact with the drain port member 2 more reliably, and it is possible to obtain good water-stopping properties.

In addition, the support shaft 52 is configured so that the end of a transmission member 9 (for example, a metal wire) for transmitting a driving force generated by displacement of an operation section (for example, a push button, etc.) not shown can come into contact with the support shaft 52. . The transmission member 9 is disposed on the inner periphery of the cylindrical tube member 10 so as to be able to reciprocate. It should be noted that the operating device (not shown) including the operating section can be connected to the support shaft 52 by locking the transmission member 9 in a reciprocating state (moving from the operating section side to the support shaft mechanism 5 side). A locking mechanism (for example, a thrust locking mechanism), not shown, is provided for locking.

Further, an absorber spring 53 is disposed inside the support shaft 52. The absorber spring 53 is configured to prevent excessive load from being applied to the transmission member 9, attachment member 4, etc. when a large downward force is applied to the stopper cover 6, such as when the stopper cover 6 is stepped on. There is. In addition, in FIG. 1, only the cross sections of the absorber spring 53 and the return spring 54, which will be described below, are shown.

Further, a return spring 54 is provided between the case portion 51 and the support shaft 52 to apply a force to the support shaft 52 in the downward movement direction.

In this embodiment, when the transmission member 9 moves forward by operating (for example, pressing) the operation section, the support shaft 52 is pushed up by the transmission member 9 against the force from the return spring 54 . Then, when the operation on the operation section is released with the support shaft 52 sufficiently moved upward, the support shaft 52 is slightly lowered and the transmission member 9 is locked in the forward movement state by the lock mechanism. Ru. As a result, the support shaft 52 is locked in the upwardly moved state.

On the other hand, when the operating section is operated again in this state, the transmission member 9 moves forward again, and the locking of the transmission member 9 by the locking mechanism is released. When the operation on the operation section is released, the support shaft 52 is moved downward by the urging force from the return spring 54. Further, as the support shaft 52 moves downward, the transmission member 9 moves back.

As described above, in this embodiment, each time the operating section is operated, the support shaft 52 is locked in the upper position and the support shaft 52 is moved downward as the transmission member 9 is unlocked. Note that the support shaft mechanism 5 may be provided with a locking mechanism for locking the support shaft 52.

The stopper lid 6 is a stopper for opening and closing the drain port 102. As shown in FIG. 2, the stopper lid 6 includes a stopper main body 61 made of resin or the like, an annular packing part 62 made of an elastically deformable material (for example, resin, rubber, etc.), and a flow path forming part. A rectifying member 63 is provided for adjusting the flow and flow rate of wastewater flowing into the drain.

In this embodiment, the support shaft 52 and the stopper lid 6 move upward as the operating section is operated, and the packing section 62 is separated from the drain port member 2, so that the drain port 102 is opened. (See Figure 1). On the other hand, in this state, the support shaft 52 moves downward as the operating section is operated, and the entire outer peripheral portion of the packing section 62 comes into contact with the drain port member 2, thereby closing the drain port 102.

In addition, the stopper lid 6 is configured so that its specific gravity is greater than 1 (that is, so as to be submerged in water), so that the drain port 102 can be closed using only its own weight.

As shown in FIG. 3, the lid body 61 includes a disk-shaped base 611, and an outer cylindrical portion 612 and an inner cylindrical portion 613 that respectively protrude downward from the back surface of the base 611. The outer cylindrical portion 612 is a portion to which the packing portion 62 and the flow regulating member 63 are attached to the outer periphery.

The inner cylinder part 613 is a cylindrical part located outside the support shaft 52 and inside the outer cylinder part 612. The inner cylindrical portion 613 includes a base cylindrical portion 613A formed concentrically with the outer cylindrical portion 612, and a plurality of legs 613B extending downward from the tip (lower end) of the root cylindrical portion 613A. There is. A plurality of leg portions 613B (four in this embodiment) are provided at equal intervals along the circumferential direction of the base side cylindrical portion 613A, and are arranged on the outer periphery of the holding portion 43. The leg portion 613B is adapted to move along the outer periphery of the holding portion 43 as the support shaft 52 moves up and down, and as a result, the inclination of the stopper lid 6 and the occurrence of positional displacement along the horizontal direction are prevented. It is preventable.

In addition, an inward protrusion 613C that protrudes inward (toward the center of the inner cylindrical portion 613) is provided on the inner periphery of the tip (lower end) of each leg 613B. The inward protrusion 613C is provided to prevent the stopper lid 6 (inner cylindrical portion 613) from coming off from the holding portion 43.

Further, each leg portion 613B is arranged between connecting portions 42, which will be described later, when the drain port 102 is in an open state. By disposing each leg portion 613B between the connecting portions 42, relative rotation of the stopper lid 6 with respect to the flow path forming portion 8 can be restricted.

As shown in FIG. 2, the flow regulating member 63 includes an annular attachment portion 631, and the attachment portion 631 is fitted onto the outer periphery of the outer cylindrical portion 612, so that it is disposed on the back side of the stopper lid 6. . In this embodiment, the attachment portion 631 prevents the packing portion 62 from falling off from the outer cylinder portion 612.

Further, the rectifying member 63 includes a plurality of blades 632 arranged at equal intervals along the circumferential direction, and by the drainage hitting these blades 632, the flow and flow rate of the drainage flowing into the flow path forming portion 8 is adjusted. It is considered possible.

Next, the configuration of the attachment member 4 will be explained. The attachment member 4 is made of a predetermined elastically deformable resin or the like, and includes an outer ring part 41, a connecting part 42, and a holding part 43, as shown in FIG.

The outer ring portion 41 has an annular shape in plan view, and functions as a mounting portion for the attachment member 4 to the flow path forming portion 8 (drain port member 2). A plurality of recesses 411 are provided in the lower part of the outer ring part 41 at intervals along the circumferential direction of the outer ring part 41, and a plurality of protrusions 412 are provided on the outer periphery of the outer ring part 41. A plurality of them are provided at intervals along the circumferential direction of the ring portion 41. By arranging the mounting protrusion 23 of the drain port member 2 in the recess 411 and arranging the protrusion 412 in the mounting recess of the drain port member 2, the outer ring portion 41 and the attachment member 4 is attached to the inner surface of the flow path forming portion 8 (drain port member 2).

The connecting portion 42 is a portion that connects the inner circumferential surface of the outer ring portion 41 and the outer circumferential surface of the holding portion 43. The connecting portions 42 extend from the outer periphery of the holding portion 43 toward the outside in the radial direction of the holding portion 43, and in the present embodiment, only two connecting portions 42 are provided so as to sandwich the holding portion 43 when viewed from above. (See FIG. 5. In FIG. 5, the support shaft mechanism 5, the stopper lid 6, etc. are not shown). Note that the waste water that has flowed into the flow path forming portion 8 flows downstream through the gaps between the respective connecting portions 42.

Further, each connecting portion 42 includes a connecting base portion 421 and a reinforcing portion 422 each having a plate shape.

The connection base 421 has an inclined plate shape that gradually displaces from the top to the bottom to one side in the circumferential direction of the holding part 43, and the width of the top surface is very small in consideration of improving aesthetics. (For example, 3 mm or less, more preferably 2 mm or less). Further, one side surface of the connecting base 421 (a surface hanging down from the edge of the upper surface of the connecting base 421) is an inclined surface configured to gradually displace from above to one side in the circumferential direction of the holding section 43. The water flow generation surface 421A faces diagonally upward.

The water flow generation surface 421A is for receiving the drainage water flowing down and directing it toward the inner surface of the flow path component 8. It is possible to generate a directional water flow) or a water flow flowing in a rotating direction on the inner surface of the flow path forming portion 8 (spiral flow). By generating such a water flow, it is possible to effectively suppress the adhesion of dirt and foreign matter to the inner surface of the flow path forming part 8, and also to prevent dirt and foreign objects from adhering to the inner surface of the flow path forming part 8. However, these can be effectively washed away.

The reinforcing portion 422 is for increasing the rigidity (strength) of the connecting portion 42. The reinforcing part 422 has a plate shape extending in the vertical direction, and is connected to the upper part of the side surface of the connecting base 421 located on the back side of the water flow generating surface 421A and the outer peripheral surface of the holding part 43. Further, the reinforcing portion 422 is provided at a position hidden by the water flow generation surface 421A when viewed in plan, and is not visible in plan view in this embodiment (see FIG. 5). Thereby, it is possible to more reliably suppress deterioration in aesthetic appearance due to the presence of the reinforcing portion 422.

Furthermore, the outermost portion of the reinforcing portion 422 is in contact with or close to the mounting protrusion 23 . Therefore, when a large downward force is applied to the stopper lid 6, the reinforcing portion 422 can more reliably prevent the lower opening of the holding portion 43 from expanding. This more reliably prevents the support shaft mechanism 5 from falling off from the holding portion 43.

The holding part 43 is for holding the support shaft mechanism 5 on its inner periphery in a state in which the support shaft mechanism 5 is supported by a support protrusion 433 which will be described later. The holding portion 43 has a cylindrical shape as a whole, and is provided coaxially with the outer ring portion 41 inside the outer ring portion 41 .

Further, as shown in FIGS. 4 and 6 (FIG. 6 is a sectional view taken along line J-J in FIG. 5 with the bathtub 100 and the like omitted), the holding portion 43 includes an outward protrusion 431 on its outer periphery. It is provided with a retaining protrusion 432 and a supporting protrusion 433 on its inner periphery.

The outward protrusion 431 is for preventing the stopper lid 6 (inner cylinder part 613) from coming off from the holding part 43 by coming into contact with the inward protrusion 613C. The outward protrusion 431 is provided on the upper outer periphery of the holding part 43 and has a protrusion shape extending along the circumferential direction of the holding part 43 . In this embodiment, two outward protrusions 431 are provided, and each outward protrusion 431 is provided corresponding to a portion of the holding portion 43 other than the connecting portion with the connecting portion 42 when viewed from above. It is being That is, a gap is formed between each of the outward protrusions 431, and the gap is located vertically above the connecting portion 42.

In addition, in this embodiment, as described above, when the drain port 102 is in the open state, the leg portion 613B is configured to be disposed between the connecting portions 42, so that the leg portion 613B is normally located above the connecting portion 42. The leg portions 613B are not disposed in any way, and the gap between the outward protrusions 431 and the inward protrusions 613C do not overlap when viewed in plan. Therefore, normally, all the inward protrusions 613C overlap with the outward protrusions 431 when viewed from above, and the stopper lid 6 (inner cylindrical part 613) is prevented from coming off from the holding part 43 very effectively. That will happen.

The retaining protrusion 432 is for preventing the support shaft mechanism 5 from coming off from the upper opening of the holding part 43. The retaining protrusion 432 is provided on the inner circumference of the upper part of the holding part 43, and has a protrusion shape that protrudes inward. In this embodiment, the retaining protrusions 432 are provided at two locations in the holding portion 43 that are located at the center of the two connecting portions 42 when viewed from above.

The support protrusion 433 is for supporting the lower part of the support shaft mechanism 5. The support protrusion 433 is provided on the lower inner periphery of the holding portion 43 and has a shape that projects inward. In this embodiment, the supporting protrusions 433 are provided at positions of the holding portion 43 that correspond to the formation locations of the two connecting portions 42 when viewed from above. That is, the supporting protrusion 433 is provided on the back side of the portion of the holding portion 43 to which the connecting portion 42 is connected, when viewed from above.

Further, the lower surface of the supporting protrusion 433 is a diameter-reducing surface 433A whose inner diameter gradually decreases upward. In this embodiment, the reduced diameter surface 433A has an inclined shape that gradually approaches the central axis CL toward the top in a cross section that includes the central axis CL of the holding portion 43. Of course, in the cross section, the reduced diameter surface 433A may be configured to have a curved shape that gradually approaches the central axis CL toward the top.

On the other hand, the upper surface of the support protrusion 433, that is, the surface that contacts and supports the support shaft mechanism 5, extends in a direction (horizontal direction) perpendicular to the central axis CL of the holding part 43, except for its outermost part. It is said to be the shape. Thereby, the support shaft mechanism 5 (case portion 51) can be stably supported by the support protrusion 433.

In addition, the inner surface of the supporting protrusion 433 (the surface located between the upper surface and the lower surface of the supporting protrusion 433 and facing the central axis CL side of the holding part 43) is located along the central axis CL in a cross section including the central axis CL. It is configured to have a shape extending parallel to the .

Further, the holding portion 43 includes a cylindrical insertion guide portion 434 below the supporting projection 433. The insertion guide part 434 is provided at the lowest part of the holding part 43 and forms a lower opening of the holding part 43. Furthermore, the insertion guide portion 434 has an inner diameter that is approximately the same as the outer diameter of the case portion 51 when the lower opening is not expanded, and is configured to allow the case portion 51 to be inserted therethrough. Further, the inner circumferential surface of the insertion guide portion 434 is continuous with the reduced diameter surface 433A.

In addition, the holding portion 43 includes a slit 435 that extends along the central axis CL direction and opens at the lower end. Only two slits 435 are provided in a positional relationship sandwiching the central axis CL of the holding part 43, and in this embodiment, each slit 435 is located at the center of two connecting parts 42 along the circumferential direction of the holding part 43. There are two locations located in . As a result, the slit 435 is provided at a position corresponding to the formation range of the outward protrusion 431 and the retaining protrusion 432 along the circumferential direction of the holding part 43.

In addition, the slit 435 is configured not to penetrate above the holding part 43, and as a result, the holding part 43 is in a state where its upper portion is connected in an annular shape. Furthermore, in this embodiment, the slit 435 is configured such that its upper end extends to the vicinity of the retaining projection 432.

In the attachment member 4 configured as described above, as shown in FIG. By pressing toward the axis CL, the outer ring portion 41, which is annular in plan view, can be deformed into an elliptical shape in plan view as represented by the virtual line VL. In the present embodiment, two locations on the outer circumferential surface of the outer ring portion 41 located at the center of the two connecting portions 42 along the circumferential direction of the outer ring portion 41 (a spot PA with a dot pattern; By pressing a portion of the outer peripheral surface of the portion 41 opposite to the portion PA with the holding portion 43 in between) toward the central axis CL of the holding portion 43 (in the direction of the diagonally shaded arrow in FIG. 7). , the outer ring portion 41 can be deformed efficiently.

By deforming the outer ring part 41 into an elliptical shape in a plan view, the portion of the outer ring part 41 connected to the connecting part 42 is deformed in a direction away from the central axis CL of the holding part 43. As a result, the connecting portion 42 moves in the direction away from the central axis CL of the holding portion 43 (in the direction of the black arrow in FIG. 7) and the slit 435 widens, thereby expanding the lower opening of the holding portion 43. Note that in this embodiment, when the lower opening of the holding part 43 is expanded, the supporting protrusion 433 moves in a direction away from the central axis CL.

Next, a method of arranging the support shaft mechanism 5 within the holding portion 43 of the attachment member 4 described above will be explained. When disposing the support shaft mechanism 5 in the holding part 43, first, the case part 51 is inserted into the insertion guide part 434, as shown in FIG. Thereby, the holding portion 43 and the support shaft mechanism 5 can be arranged in a straight line. Note that when inserting the case part 51 into the insertion guide part 434, the lower opening of the holding part 43 may be enlarged by pressing the outer ring part 41, or the outer ring part 41 may not be pressed. The lower opening of the holding portion 43 may not be enlarged. FIG. 8 shows a state in which the lower opening of the holding part 43 is not enlarged.

In this embodiment, by inserting the case part 51 into the insertion guide part 434, the upper part of the support shaft 52 protruding from the case part 51 comes close to the inner surface of the support protrusion 433. In particular, in this embodiment, when the case portion 51 is inserted into the insertion guide portion 434, the inner surface of the support protrusion 433 is arranged to correspond to the constricted portion provided at the upper part of the support shaft 52. There is. This makes it difficult for the support shaft mechanism 5 to come off from the insertion guide portion 434.

After the case part 51 is inserted into the insertion guide part 434, the support shaft mechanism 5 is pushed into the inside of the holding part 43 while enlarging the lower opening of the holding part 43 by pressing the outer ring part 41. By pushing in the support shaft mechanism 5, the reduced diameter surface 433A of the support protrusion 433 is pressed by the case part 51, the lower opening of the holding part 43 further expands, and finally the support shaft mechanism 5 The lower opening expands to the extent that the protrusion 433 can be passed through. At this time, by enlarging the lower opening of the holding part 43 by pressing the outer ring part 41, the support shaft mechanism 5 can pass through the support protrusion 433 without significantly increasing the pushing force applied to the support shaft mechanism 5. The lower opening can be easily enlarged to a certain extent.

Then, the support shaft mechanism 5 is further pushed into the holding part 43 and the entire support shaft mechanism 5 passes through the support protrusion 433, so that the support shaft mechanism 5 is disposed inside the holding part 43. . After the support shaft mechanism 5 is disposed within the holding part 43, the pressure on the outer ring part 41 is released, and the holding part 43 returns to its original shape, and the support shaft mechanism 5 is then moved by the support protrusion 433. is stably supported.

Note that by pressing the outer peripheral surface of the outer ring part 41, the lower opening of the holding part 43 is expanded to the extent that the support shaft mechanism 5 can pass through the supporting protrusion 433, and then the supporting shaft mechanism 5 is supported into the holding part 43. The shaft mechanism 5 may be arranged (inserted). In other words, without pushing the support shaft mechanism 5 into the inside of the holding part 43 with the case part 51 in contact with the reduced diameter surface 433A, the lower part of the holding part 43 is moved only by pressing the outer ring part 41. The opening may be sufficiently enlarged, and the support shaft mechanism 5 may be disposed (inserted) into the holding portion 43 in this state.

As described in detail above, according to the present embodiment, the attachment member 4 is configured so that the lower opening of the holding portion 43 is expanded by pressing the outer circumferential surface of the outer ring portion 41. Therefore, while enlarging the lower opening of the holding part 43 by pressing the outer ring part 41, the support shaft mechanism 5 can be more easily disposed (inserted) into the holding part 43 through the enlarged lower opening. As a result, very excellent installation workability can be obtained.

Furthermore, only two connecting parts 42 are provided in a positional relationship sandwiching the holding part 43 when viewed from above, and the slit 435 is located at the center of the two connecting parts 42 along the circumferential direction of the holding part 43. There are two locations each. Therefore, when the outer ring part 41 is pressed and deformed, the moving direction of the connecting part 42 and the width direction of the slit 435 can be made the same, and when the outer ring part 41 is pressed and deformed, the slit 435 can be can be efficiently expanded. Further, the lower part of the holding part 43 is composed of two parts separated by the slit 435, and when the outer ring part 41 is press-deformed, these two parts are separated from each other. It can be moved. Therefore, when the outer ring part 41 is press-deformed, the lower opening of the holding part 43 can be enlarged over its entire area. As a result, the support shaft mechanism 5 can be more easily disposed (inserted) into the holding portion 43, and even better installation workability can be obtained.

In addition, when disposing (inserting) the support shaft mechanism 5 into the holding part 43, the support shaft mechanism 5 is brought into contact with the reduced diameter surface 433A of the support protrusion 433 and moved toward the inside of the holding part 43. By pushing in, the lower opening of the holding part 43 can be enlarged. Here, by pressing the outer ring part 41 to enlarge the lower opening of the holding part 43 and pushing the support shaft mechanism 5 toward the inside of the holding part 43, the pushing force applied to the support shaft mechanism 5 can be reduced. The lower opening of the holding part 43 can be enlarged without making it large. Therefore, according to the present embodiment, the provision of the diameter-reducing surface 433A and the fact that the lower opening of the holding part 43 can be enlarged by pressing the outer ring part 41 combine to provide support into the holding part 43. The shaft mechanism 5 can be disposed (inserted) very smoothly. As a result, installation workability can be further improved.

In addition, since only two connecting parts 42 are provided, a larger area (water passage area) of the drainage flow path formed between the holding part 43 and the outer ring part 41 can be secured, and the drainage capacity can be increased. You can improve your performance.

Further, the slit 435 is configured such that its upper end extends to the vicinity of the retaining projection 432, and is not opened at the upper end of the holding portion 43. Therefore, the upper part of the holding part 43 is in a continuous annular state, and the upper opening of the holding part 43 cannot be enlarged in diameter. Thereby, the function of preventing the support shaft mechanism 5 from falling off by the falling-off prevention protrusion 432 can be more effectively exerted.

In addition, a retaining protrusion 432 is formed in a portion of the holding portion 43 that corresponds to the upper end of the slit 435. Therefore, the part of the holding part 43 corresponding to the upper end of the slit 435 can be made sufficiently thick to have excellent strength, and can be held when the outer ring part 41 is pressed and deformed to widen the slit 435. Damage to the portion 43 can be more reliably prevented. As a result, durability and ease of handling can be improved.

In particular, in this embodiment, since the outward protrusion 431 is also formed in the portion of the holding portion 43 corresponding to the upper end of the slit 435, the portion of the holding portion 43 corresponding to the upper end of the slit 435 is further thickened. The meat can be made into a state with even greater strength. Thereby, it is possible to more reliably prevent damage to the holding part 43 when the outer ring part 41 is pressed and deformed to widen the slit 435, and extremely excellent durability and ease of handling can be obtained.

Further, an insertion guide part 434 through which the case part 51 can be inserted is provided at the lower part of the holding part 43. When disposing (inserting) the support shaft mechanism 5 into the holding part 43, the insertion guide part 434 By inserting the case portion 51 into the housing 434, the holding portion 43 and the support shaft mechanism 5 can be easily arranged in a straight line. That is, it is possible to easily set the relative positional relationship between the holding part 43 and the support shaft mechanism 5 to the most suitable state for insertion of the support shaft mechanism 5 into the holding part 43. Therefore, it becomes possible to more easily arrange (insert) the support shaft mechanism 5 into the holding part 43, and it is possible to further improve the installation workability.

Particularly in this embodiment, the insertion guide portion 434 has an inner diameter that is approximately the same as the outer diameter of the case portion 51 when the lower opening of the holding portion 43 is not enlarged. Therefore, the case part 51 can be inserted into the insertion guide part 434 without enlarging the lower opening of the holding part 43, and it is easier to arrange the holding part 43 and the support shaft mechanism 5 in a straight line. easily possible. Thereby, the installation workability can be further improved.

Furthermore, when the case part 51 is inserted into the insertion guide part 434, the upper part of the support shaft 52 is in a state close to the inner surface of the support protrusion 433. Therefore, when the case part 51 is inserted into the insertion guide part 434, the support shaft mechanism 5 can be supported by both the support protrusion 433 and the insertion guide part 434, and as a result, the holding part 43 and the support shaft mechanism 5 are The straight lined state can be maintained more stably. Thereby, the support shaft mechanism 5 can be disposed (inserted) into the holding portion 43 even more easily, and the installation workability can be further improved.

Note that the present invention is not limited to the content described in the above embodiment, and may be implemented as follows, for example. Of course, other applications and modifications not exemplified below are also possible.

(a) In the above embodiment, two connecting portions 42 are provided, but three or more connecting portions may be provided.

(b) In the above embodiment, the slit 435 is configured such that its upper end extends to the immediate vicinity of the retaining projection 432; however, the slit may be configured such that its upper end extends to the retaining projection 432. good. That is, the slit may be configured to reach the retaining protrusion 432.

Moreover, the formation position of the slit may be changed as appropriate.

Further, in the above embodiment, the slit 435 has a shape that does not penetrate above the holding part 43, but the slit may be configured so as to penetrate above the holding part 43. That is, the slits may be configured to penetrate above and below the holding portion 43.

(c) In the above embodiment, the connecting portion 42 has a shape including the connecting base 421 having the water flow generation surface 421A, but the shape of the connecting portion 42 is not limited to this. . Therefore, for example, the connecting portion may be configured to have a rod shape, a flat plate shape, or the like.

(d) In the embodiment described above, the insertion guide portion 434 is configured to have an inner diameter that is approximately the same as the outer diameter of the case portion 51 when the lower opening of the holding portion 43 is not expanded. In contrast, by configuring the insertion guide part so that it has an inner diameter smaller than the outer diameter of the case part 51 when the lower opening of the holding part 43 is not expanded, and enlarging the lower opening, the insertion guide The case portion 51 may be configured to be insertable into the portion. Even with such a configuration, the lower opening of the holding part 43 is expanded by pressing the outer peripheral surface of the outer ring part 41, so that the case part 51 can be easily inserted into the insertion guide part. be able to.

(e) In the above embodiment, the stopper lid 6 is provided with the flow regulating member 63, but the flow regulating member 63 may not be provided.

(f) In the above embodiment, the flow path configuration section 8 is configured by the drain port member 2 and the pipe 3, but the flow path configuration section is not necessarily limited to such a configuration. For example, in a configuration in which the drain port member is omitted and the pipe is directly connected to the bathtub 100 so that the inner peripheral surface of the pipe is continuous with the surface forming the drain port 102 in the bathtub 100, the drain port in the bathtub 100 is The portion forming 102 and the piping constitute a flow path configuration section. Furthermore, in this configuration, when an annular sealing member is disposed between the upper end surface of the bathtub 100 and the piping, since drainage flows through a portion of the bathtub 100 that forms the drain port 102, the sealing member, and the piping, the seal The member also becomes a part of the flow path structure.

(g) In the above embodiment, the attachment member 4 (outer ring part 41) is attached to the inner surface of the drain port member 2, but the attachment member 4 (outer ring part 41) is attached to the flow path forming part 8. As long as it's on the inside. Therefore, the attachment member 4 (outer ring portion 41) may be attached to the inner surface of the pipe 3, or may be attached to both inner surfaces extending from the drain port member 2 to the pipe 3.

(h) In the above embodiment, the stopper lid 6 is placed on the support shaft 52, but the tip (upper end) of the support shaft 52 is attached (fixed) to the stopper lid 6. may be configured. Incidentally, in this configuration, since it is possible to prevent the inclination of the stopper lid 6, etc., the inner cylindrical portion 613 may be omitted.

(i) In the above embodiment, the drain port 102 is configured to be in a closed state when the stopper lid 6 (packing portion 62) comes into contact with the drain port member 2, but the stopper lid 6 (packing portion 62) The drain port 102 may be configured to be in a closed state when the drain port 102 comes into contact with the bottom surface 101 of the bathtub 100.

(j) In the above embodiment, the bathtub 100 is illustrated as an example of a bathtub, but the bathtub to which the technical idea of the present invention can be applied is not limited to a bathtub. Therefore, for example, the technical idea of the present invention may be applied to baths other than bathtubs, such as washbowls and kitchen sinks.

DESCRIPTION OF SYMBOLS 1... Drain plug device, 4... Attachment member, 5... Support shaft mechanism, 6... Bottle lid, 8... Channel structure part, 41... Outer ring part, 42... Connecting part, 43... Holding part, 51... Case part, 52... Support shaft, 100... Bathtub (tank body), 102... Drain port, 432... Removal prevention protrusion, 433... Support protrusion, 433A... Diameter reduction surface, 434... Insertion guide part, 435... Slit.

Claims (3)

A stopper lid for opening and closing a drain provided in the tank body,
a flow path configuration part whose interior constitutes a flow path for drainage flowing through the drain port;
a support shaft mechanism having a rod-shaped support shaft that supports the stopper lid at its upper end and can move the stopper lid up and down by its own vertical movement;
A support projection protruding inward is provided on the lower inner periphery, and a cylindrical holding portion is provided that holds the support shaft mechanism on the inner periphery while the support shaft mechanism is supported by the support projection. , an attachment member provided within the flow path configuration section,
A drain plug device configured to switch the open/closed state of the drain port by vertical movement of the support shaft,
The holding part is provided with a slit that opens at the lower end, and is configured such that the lower opening of the holding part expands as the slit widens.
The support shaft mechanism includes a cylindrical case portion that holds the support shaft on its inner periphery in a vertically movable state,
Below the supporting protrusion in the holding part, a cylindrical insertion guide part projects downward from the lower end of the supporting protrusion, forms the lower opening, and is capable of being inserted into the case part. A drain plug device characterized by being provided with. 2. The drain plug device according to claim 1, wherein the supporting protrusion has a diameter-reducing surface that is continuous with the inner circumferential surface of the insertion guide portion and whose inner diameter gradually decreases upward. The support shaft has an upper portion protruding from the case portion,
The upper part of the support shaft is configured to be close to or in contact with the inner surface of the support protrusion when the case part is inserted into the insertion guide part in order to arrange the support shaft mechanism in the holding part. The drain plug device according to claim 1 or 2, characterized in that:

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