JP7407446B2 - 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 is used to open and close a drain port provided in a tank body (for example, a bathtub, a washbasin, etc.) by moving a plug lid up and down.

The drain plug device includes a stopper lid having an elastically deformable annular packing part, a vertically movable support shaft that supports the stopper lid, and a cylindrical drain member inserted into the drain port. Some are known (for example, see Patent Document 1). In such a drain plug device, the support shaft moves upward and the stopper lid is lifted by a predetermined portion of the support shaft (for example, the upper end surface of the support shaft), thereby opening the drain port. On the other hand, the support shaft moves downward and the packing portion comes into contact with a predetermined contact target portion (for example, a drain port member, a predetermined portion of the tank body, etc.), thereby closing the drain port.

Japanese Patent Application Publication No. 2015-214813

By the way, when the drain port is in a closed state, there is a possibility that a large downward force is applied to the faucet lid due to placing a heavy object on the faucet lid or stepping on the faucet lid. When such a force is applied to the stopper lid, an excessive load is applied to the support shaft and the packing part through the stopper lid, and as a result, the support shaft and various parts related to the support shaft (for example, the support shaft and There is a risk of damage or deformation occurring in parts that interlock or support the support shaft) and packing parts. In addition, when the contact target part has a tapered shape in which the inner diameter gradually decreases downward, a large downward force is applied to the stopper lid, causing the packing part to fit into the contact target part. There is a risk that it will be difficult to open and close the drain.

The present invention has been made in view of the above circumstances, and its purpose is to prevent various problems caused by the force even if a large downward force is applied to the faucet lid when the drain port is closed. An object of the present invention is to provide a drain plug device that can more reliably prevent the occurrence of

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 having an annular packing portion and for opening and closing a drain hole formed in a bottom wall portion of the tank body;
Equipped with a support shaft configured to be able to move up and down,
The support shaft has a lifting part that lifts the stopper lid while coming into contact with the stopper lid when the support shaft moves upward;
As the support shaft moves downward, the packing portion comes into contact with a predetermined contact target portion, thereby closing the drain port, while as the support shaft moves upward, the lid is lifted by the lifting portion. A drain plug device configured such that the drain port is opened when the packing part is separated from the contact target part,
When the drain port is in a closed state, when a downward force is applied to the faucet lid, the packing portion is elastically deformed, and the faucet lid is configured to be able to sink downward;
The stopper lid is a regulating part that prevents the stopper cover from sinking further by contacting a predetermined receiving part in a state in which the stopper cover sinks downward when the drain port is in a closed state. Equipped with
A drain plug device characterized in that the lifting portion and the plug lid are vertically spaced apart in a state in which the regulating portion is in contact with the receiving portion.

According to the above means 1, when the drain outlet is in a closed state, if a downward force is applied to the faucet lid by, for example, placing a heavy object on the faucet lid or stepping on the faucet lid, the drain port is in a closed state. When the regulating part provided on the lid comes into contact with the predetermined receiving part, further sinking of the stopper lid is prevented. When the regulating portion is in contact with the receiving portion, the lifting portion of the support shaft and the stopper lid are separated in the vertical direction. Therefore, even if a large downward force is applied to the stopper lid, the force can be more reliably prevented from being transmitted to the support shaft (lifting part). As a result, damage and deformation of the support shaft, various parts related to the support shaft, and the packing portion can be effectively prevented. In addition, when the regulating part comes into contact with the receiving part, it is possible to prevent the stopper lid from sinking excessively. The packing part is less likely to fit into the part. Thereby, it is possible to effectively prevent problems in opening and closing the drain port due to the fitting of the packing part.

Means 2. a cylindrical drain member inserted into the drain port and whose inner space constitutes a flow path for drainage from the tank;
The drain plug device according to means 1, wherein the receiving portion is constituted by an upper end surface of the drain port member.

According to the above-mentioned means 2, the receiving portion is constituted by the upper end surface of the drain port member. Therefore, the receiving section can be constructed by effectively utilizing the drain port member that functions as a drainage channel, without separately installing special parts for configuring the receiving section. This makes it possible to reduce costs associated with manufacturing the device. Furthermore, since no special parts are installed as the receiving part, it is possible to prevent the drainage capacity from decreasing due to the presence of the receiving part. In addition, since the drain port member and the support shaft are generally arranged in a fixed positional relationship, it is necessary to arrange the receiving part more accurately in the desired relative positional relationship with respect to the object (supporting shaft) to which force transmission should be prevented. Can be done. Thereby, the configuration of the above-mentioned means 1 (the configuration in which the lifting part and the stopper lid are separated in the vertical direction when the regulating part is in contact with the receiving part) can be realized more reliably and easily.

Means 3. The drain plug device according to means 2, wherein the receiving portion is constituted by a plurality of receiving pieces provided at intervals along the circumferential direction of the drain port member.

According to the above means 3, the receiving portion is constituted by a plurality of receiving pieces provided at intervals along the circumferential direction of the drain port member. That is, the receiving portion is not continuous in an annular shape but is discontinuous, and a gap is formed between each receiving piece. Therefore, when the drain port is opened to drain water from the tank body, the waste water easily flows into the drain port member (drainage flow path) through the gap. As a result, even if the drainage capacity is slightly reduced due to the presence of the regulating portion, the reduction in capacity can be compensated for and a sufficiently good drainage capacity can be more reliably ensured.

Means 4. 4. The drain plug device according to any one of means 1 to 3, wherein the restriction portion is constituted by a plurality of restriction pieces provided at intervals along the outer circumferential direction of the tap lid.

According to the above-mentioned means 4, since the regulating part is constituted by a plurality of regulating pieces provided at intervals along the outer circumferential direction of the stopper lid, a gap is formed between each regulating piece. The state will be as follows. Therefore, when draining water from the tank body with the drain port open, the drain water can flow through the gap, thereby making it more difficult for the drainage capacity to deteriorate due to the presence of the regulating portion. As a result, good drainage capacity can be ensured even more reliably.

Means 5. The stopper lid is
a plate-shaped lid portion located above the regulating portion;
5. The drain plug device according to any one of means 1 to 4, further comprising a reinforcing portion that connects the lid portion and the regulating portion.

According to the above-mentioned means 5, a reinforcing portion that connects the lid portion and the regulating portion is provided. Therefore, the durability of the regulating section against loads can be increased, and damage and deformation of the regulating section can be more reliably prevented. As a result, the effects of providing the regulating portion can be exerted over a longer period of time and more reliably.

Means 6. The stopper lid includes a cylindrical part that protrudes downward from the back surface of the lid part, and the packing part is disposed on the outer periphery of the cylindrical part,
5. The drain plug device according to means 5, wherein the reinforcing portion is connected to the cylindrical portion.

According to the above-mentioned means 6, since the reinforcing part is connected to the cylindrical part, the durability of the reinforcing part and thus of the regulating part against loads can be further improved. Thereby, it is possible to more reliably prevent damage or deformation of the regulating portion due to the application of a load.

Means 7. comprising a retraction force applying part that applies a retraction force to the support shaft in a downward movement direction thereof,
The stopper lid is
a plate-shaped lid portion located above the regulating portion;
an attached part provided on the back side of the lid part and attached to the upper end part of the support shaft;
The support shaft is provided with a predetermined locking portion, and
The attached part is provided with a locked part that can be locked by the locking part,
In a state where the attached part is attached to the upper end of the support shaft, the pulling force applied from the pulling force applying part to the support shaft is stopped by the locking part and the locking part. configured to be applied to the stopper lid via the locked portion,
With the attached part detached from the upper end of the support shaft, while installing the attached part on the upper end of the support shaft, a downward force is applied to the stopper lid so that the receiving part is 7. The drain plug device according to any one of means 1 to 6, characterized in that the to-be-attached portion can be attached to the upper end portion of the support shaft by bringing the regulating portion into contact with the drain plug device.

Note that the lids in the means 5 and 7 are the same, and it is not intended that there be a plurality of lids in the means 7 that is subordinate to the means 5.

According to the above means 7, in a state where the attached part (bottom lid) is attached to the upper end of the support shaft, when the drain port is closed, the drawing force is applied to the support shaft from the drawing force applying part. A retraction force is applied to the stopper lid via the locking portion or the like. Therefore, the packing part can be brought into contact with the contact target part under relatively large pressure, and good water-stopping properties can be obtained.

Furthermore, according to the means 7, when the attached part is detached from the upper end of the support shaft, the attached part is installed on the upper end of the support shaft (for example, the support shaft and the attached part are coaxial). The attached part can be attached to the upper end of the support shaft by applying a downward force to the stopper lid while placing the attached part on the support shaft in this state. Therefore, the attached part can be easily attached to the upper end of the support shaft. In addition, when force is applied to the stopper lid to attach the mounted part to the upper end of the support shaft, the regulating part can come into contact with the receiving part, so there is no need to apply excessive load to the support shaft during installation. . As a result, by simply applying a downward force to the stopper lid, the attached part can be easily attached to the upper end of the support shaft without causing damage or deformation of the support shaft or the like.

Means 8. Means characterized by comprising shock absorber means for absorbing a load applied to the support shaft through the stopper cover when a downward force is applied to the stopper cover when the drain port is in an open state. 8. The drain plug device according to any one of 1 to 7.

According to the above means 8, even if a large downward force (load) is applied to the faucet lid by stepping on the faucet lid while the drain opening is in an open state, the shock absorber means The load applied to the support shaft can be absorbed through the support shaft. This more reliably prevents damage and deformation of the support shaft and various related parts (for example, parts that interlock with or support the support shaft) when the drain port is open. be able to. As a result, according to the above-mentioned means 8 having the structure of the above-mentioned means 1, damage to the support shaft etc. due to downward force applied to the faucet lid can be avoided regardless of whether the drain port is in a closed state or an open state. and deformation can be effectively prevented.

FIG. 3 is a sectional view of the drain plug device when the drain port is in a closed state. It is a perspective view of a stopper lid. FIG. 3 is a sectional view of the drain plug device when the drain port is in an open state. It is a sectional view of the drain plug device when a downward force is applied to the plug lid when the drain port is in a closed state. FIG. 7 is an explanatory diagram for explaining a method of attaching the attached part to the support shaft in a state where the attached part is detached from the support shaft. FIG. 7 is a perspective view of a drain port member in another embodiment. It is a perspective view of the stopper lid for showing the regulating part etc. in another embodiment. It is a perspective view of the stopper lid for showing the regulating part etc. in another embodiment.

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 wall portion 101 forming the bottom surface thereof, and a drain port 102 is formed through the bottom wall portion 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 a cylindrical component whose inner space constitutes a flow path for drainage from the bathtub 100, and is inserted into the drain port 102 with its central axis substantially aligned with the center axis of the drain port 102. has been done. The drain port member 2 includes a flange 21 that projects radially outward at its upper end, and a male threaded portion 22 that is formed on the outer periphery below the flange 21 . In addition, in this embodiment, although the thickness of the collar part 21 is made into a comparatively large thing, you may change the thickness of the collar part 21 suitably.

In addition, the drain port member 2 includes an annular receiving portion 23 formed by the upper surface of the collar portion 21 (that is, the upper end surface of the drain port member 2). The receiving portion 23 comes into contact with a regulating portion 615 (described later) of the faucet lid 6 when a downward force is applied to the faucet lid 6 and the faucet lid 6 moves downward when the drain port 102 is in a closed state. It is a part.

Further, the drain port member 2 includes a contact surface 24 that comes into contact with a packing portion 62, which will be described later, at least when the drain port 102 is in a closed state. The contact surface 24 in this embodiment has a tapered shape whose inner diameter gradually decreases downward. In the present embodiment, the contacted surface 24 corresponds to the "contacted part".

The pipe 3 has a cylindrical shape, and together with the drain port member 2 constitutes a flow path for drainage from the bathtub 100. The piping 3 includes 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, by inserting the drain port member 2 into the drain port 102, screwing the male threaded portion 22 into the female thread portion 31, and sandwiching the bottom wall portion 101 between the collar portion 21 and the upper end surface of the pipe 3, the drain port member 2 and The piping 3 is connected and both are attached to the bathtub 100.

Further, in this embodiment, an annular sealing member 7 made of an elastically deformable material (for example, resin, rubber, etc.) is arranged between the upper end surface of the pipe 3 and the bottom wall portion 101. . The seal member 7 prevents water from leaking between the drain port member 2 and piping 3 and the bathtub 100. In addition, in order to more effectively prevent water leakage, a sealing member may be disposed between the lower surface of the collar portion 21 and the bottom wall portion 101.

The attachment member 4 is for holding the support shaft mechanism 5 in the drainage flow path. The attachment member 4 connects an annular outer ring part 41 attached to the inner peripheral surface of the drain port member 2, a cylindrical holding part 42 that holds the support shaft mechanism 5, and the outer ring part 41 and the holding part 42. A plurality of connecting portions 43 are provided. A plurality of connecting portions 43 are provided at intervals along the circumferential direction of the holding portion 42, and drainage water flows downstream through the gaps between the connecting portions 43.

The support shaft mechanism 5 is a mechanism for moving the stopper lid 6 up and down, and includes a case portion 51, a support shaft 52, an inner cylinder portion 53, an absorber spring 54, and a return spring 55. In this embodiment, the absorber spring 54 corresponds to "shock absorber means" and the return spring 55 corresponds to "retracting force applying section."

The case part 51 has a cylindrical shape and is held by the holding part 42 in a state where it cannot move up and down. The support shaft 52 has a cylindrical shape with a closed upper end, and is disposed on the inner periphery of the case portion 51 so as to be able to reciprocate (move up and down).

Furthermore, a locking portion 52a that protrudes outward is provided on the outer periphery of the upper end portion of the support shaft 52. The locking portion 52a has an annular shape that extends continuously along the circumferential direction of the support shaft 52. By locking the locking portion 52a with a locked portion 612a, which will be described later, it is possible to prevent the stopper lid 6 from coming off the support shaft 52 and to allow the support shaft 52 to pull the stopper lid 6 downward. becomes possible.

Furthermore, a stopper lid 6 is attached to the upper end of the support shaft 52, and the stopper lid 6 moves up and down as the support shaft 52 moves back and forth (up and down). In this embodiment, as the support shaft 52 moves upward, the stopper cover 6 is lifted by the upper end surface of the support shaft 52, thereby causing the stopper cover 6 to move upward. That is, in this embodiment, the upper end surface of the support shaft 52 constitutes a lifting portion 52b that lifts the stopper lid 6 while coming into contact with the stopper lid 6 when the support shaft 52 moves upward.

The inner cylinder part 53 has a cylindrical shape with a closed upper end, and is disposed inside the support shaft 52. An end of a transmission member 8 (for example, a metal wire) for transmitting the driving force generated by the displacement of an operation section (for example, a push button, etc.) not shown is inserted into the inner periphery of the inner cylinder section 53. The end surface of the transmission member 8 can come into contact with the lower surface of the upper end of the inner cylindrical portion 53 . The transmission member 8 is disposed on the inner periphery of the cylindrical tube member 9 so as to be able to reciprocate. In addition, the operating device (not shown) including the operating section has an inner cylindrical portion by locking the transmission member 8 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 to lock 53 in a forward (upward) movement state.

The absorber spring 54 is constituted by a spring component formed by spirally winding a metal wire, and is formed inside the support shaft 52 by an upper stepped portion of the support shaft 52 and a lower collar-like portion of the inner cylinder portion 53. They are placed between the top and bottom. If a large downward force is applied to the faucet lid 6, such as when stepping on the faucet lid 6 while the drain port 102 is open (the support shaft 52 has moved upward), the absorber spring 54 is compressed. By deforming, the load applied to the support shaft 52 via the stopper lid 6 is absorbed. In addition, in FIG. 1 etc., only the cross sections of the absorber spring 54 and the return spring 55 are schematically shown.

The return spring 55 is constituted by a spring component formed by spirally winding a metal wire, and is disposed between the case portion 51 and the support shaft 52 in a slightly compressed state. The return spring 55 has a role of applying a retracting force to the support shaft 52 in the backward movement (downward movement) direction.

The stopper lid 6 is a stopper for opening and closing the drain port 102. As shown in FIG. 2, the stopper lid 6 is formed of a stopper main body 61 made of resin or the like and an elastically deformable material (such as rubber or resin), and is attached to the stopper main body 61. It has an annular packing part 62.

The lid main body part 61 includes a disc-shaped lid part 611, and a cylindrical attached part 612 (see FIG. 1, etc.) and a guide part 613 that respectively protrude downward from the lower surface (back surface) of the lid part 611. We are prepared. In this embodiment, the guide portion 613 corresponds to a “cylindrical portion”.

The attached portion 612 is provided inside the guide portion 613 and concentrically with the guide portion 613 . The attached part 612 is a part that functions as a part to which the stopper lid 6 is attached to the support shaft 52, and when the upper end of the support shaft 52 is inserted through the attached part 612, the upper end of the support shaft 52 is attached. On the other hand, a stopper lid 6 is attached.

Furthermore, a locked portion 612a that protrudes inward is provided on the inner periphery of the lower end of the attached portion 612 (see FIG. 1, etc.). In this embodiment, a plurality of locked parts 612a are formed at intervals along the circumferential direction of the attached part 612.

In addition, the guide portion 613 is disposed on the outer periphery of the holding portion 42 and moves along the outer periphery of the holding portion 42 as the support shaft 52 moves back and forth (up and down). The guide portion 613 plays a role of guiding the reciprocating movement of the stopper lid 6 while more reliably preventing the occurrence of inclination of the stopper lid 6 or misalignment along the horizontal direction.

Furthermore, an annular groove 613a extending in the circumferential direction of the guide portion 613 is provided on the outer periphery of the guide portion 613 (see FIG. 1, etc.). By fitting the packing part 62 into the annular groove 613a, the packing part 62 is attached to the outer periphery of the guide part 613.

Furthermore, the stopper lid main body portion 61 is located closer to the lid portion 611 than the annular groove 613a (packing portion 62), and has a flange-shaped base 614 that protrudes from the outer periphery of the guide portion 613, and a flange-shaped base 614 that extends from the outer periphery of the flange-shaped base 614. A protruding restriction portion 615 is provided. The brim-shaped base 614 is a portion for connecting the guide portion 613 and the regulating portion 615, and has an outer diameter smaller than the upper end surface of the drain port member 2, that is, the inner diameter of the receiving portion 23.

The regulating portion 615 includes a plurality of (in this embodiment, four equally spaced regulating pieces) 615a provided at intervals along the outer circumferential direction of the stopper lid 6 (the circumferential direction of the guide portion 613). It is made up of. In this embodiment, the regulating piece portion 615a has a rectangular shape in a plan view, and has a plate shape with the thickness direction being the vertical direction. The outer diameter of the regulating portion 615 (more specifically, the diameter of a virtual circle passing through the outer peripheral portion of each regulating piece portion 615a) is larger than the inner diameter of the receiving portion 23 and smaller than the outer diameter of the receiving portion 23. .

Furthermore, the stopper lid main body portion 61 includes a reinforcing portion 616 that connects the lid portion 611 and the regulating portion 615. In this embodiment, the reinforcing section 616 is constituted by a plate-shaped rib, and a plurality of reinforcing sections 616 are provided so as to connect each regulating piece section 615a and the lid section 611. Further, each reinforcing portion 616 is connected to the outer circumferential surface of the guide portion 613.

In the drain plug device 1 described above, the open/closed state of the drain port 102 can be switched as follows. That is, when the outer peripheral portion of the packing portion 62 is in contact with the contacted surface 24 (that is, when the drain port 102 is in the closed state), the transmission member 8 is activated by operating (for example, pressing) the operating portion. The transmission member 8 pushes up the inner cylinder portion 53, the support shaft 52, etc. against the force from the return spring 55, and moves upward. Further, as the support shaft 52 moves upward, the lid 6 is lifted by the lifting portion 52b (the upper end surface of the support shaft 52) and moves upward. 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 8 is locked in the forward movement state by the lock mechanism. Ru. As a result, the support shaft 52 is locked in an upwardly moved state, and the packing portion 62 is separated from the contact surface 24, thereby opening the drain port 102 (see FIG. 3).

On the other hand, when the operating portion is operated (for example, pressed) again when the drain port 102 is in the open state, the transmission member 8 moves forward again, and the locking of the transmission member 8 by the locking mechanism is released. Then, when the operation on the operation section is released, the support shaft 52 moves downward by the retracting force from the return spring 55. As a result, the entire circumference of the outer circumferential portion of the packing portion 62 comes into contact with the contacted surface 24, thereby closing the drain port 102 (see FIG. 1).

Furthermore, in this embodiment, when the upper end of the support shaft 52 is inserted into the attached part 612 and the stopper lid 6 is attached to the upper end of the support shaft 52, the drain port 102 is closed. At times, the lower part of the support shaft 52 becomes lifted from the parts below it. In other words, a space S (see FIG. 1) exists below the support shaft 52. As a result, the retraction force applied from the return spring 55 to the support shaft 52 is applied to the stopper lid 6 via the locking portion 52a and the locked portion 612a locked to the locking portion 52a. As a result, the packing portion 62 comes into contact with the contact surface 24 with a relatively large pressure.

Furthermore, in this embodiment, when the drain port 102 is in the closed state, a downward force is applied to the faucet lid 6, for example, by placing a heavy object on the faucet lid 6 or stepping on the faucet lid 6. When it is applied, the packing portion 62 is elastically deformed, allowing the stopper lid 6 to sink downward. As shown in FIG. 4, when the drain port 102 is in the closed state and the stopper lid 6 is sunk downward, the regulating portion 615 comes into contact with the receiving portion 23, thereby causing the stopper lid 6 to This is to prevent further sinking (see Figure 4). In addition, in the state in which the regulating portion 615 is in contact with the receiving portion 23, the support shaft 52 moves downward (backward movement) due to the retraction force applied from the return spring 55, and the space S does not exist. The portion 52b and the stopper lid 6 are in a state separated from each other in the vertical direction.

In addition, in this embodiment, as shown in FIG. 5, when the upper end of the support shaft 52 is detached from the attached part 612 and the locking part 52a is not locked to the locked part 612a, the downward movement is not possible. The attached part 612 is installed on the upper end of the support shaft 52 so that the supported shaft 52 and the attached part 612 are coaxial, and then a downward force is applied to the stopper lid 6 to remove the support. An attached part 612 can be attached to the upper end of the shaft 52. That is, even when the support shaft 52 is in a downwardly moved state, the stopper lid 6 can be attached to the support shaft 52, and when a downward force is applied to the stopper lid 6, the stopper lid 6 can be restrained by the receiving part 23. Since the portion 615 can come into contact with each other, unnecessary force associated with attachment is not applied to the support shaft 52.

As described in detail above, according to the present embodiment, when a downward force is applied to the stopper lid 6 when the drain port 102 is in the closed state, the regulating part 615 comes into contact with the receiving part 23, thereby causing the stopper Further sinking of the lid 6 is prevented. When the regulating portion 615 is in contact with the receiving portion 23, the lifting portion 52b of the support shaft 52 and the stopper lid 6 are spaced apart in the vertical direction. Therefore, even if a large downward force is applied to the stopper lid 6 when the drain port 102 is in the closed state, the force can be more reliably prevented from being transmitted to the support shaft 52 (lifting part 52b). As a result, damage or deformation of the support shaft 52, various parts related to the support shaft 52 (for example, the transmission member 8, the attachment member 4, etc.), the packing portion 62, etc. can be effectively prevented. Further, since the restricting portion 615 comes into contact with the receiving portion 23, it is possible to prevent the stopper lid 6 from sinking excessively, so that the inner diameter of the contacted surface 24 gradually decreases downward as in the present embodiment. Even when the tapered shape is formed, the packing portion 62 is less likely to fit into the contact surface 24. Thereby, it is possible to effectively suppress the occurrence of trouble in opening and closing the drain port 102 due to the fitting of the packing part 62.

In addition, in this embodiment, the upper end surface of the drain port member 2 constitutes the receiving portion 23 . Therefore, the receiving portion 23 can be configured by effectively utilizing the drain port member 2 that functions as a drainage channel without separately installing special parts for configuring the receiving portion 23. Thereby, it is possible to reduce the cost associated with manufacturing the drain plug device 1 and the like. Furthermore, since no special parts are installed as the receiving portion 23, it is possible to prevent the drainage capacity from decreasing due to the presence of the receiving portion 23. In addition, the support shaft 52 (support shaft mechanism 5) is attached to the drain port member 2 via the attachment member 4, and the support shaft 52 and the drain port member 2 are arranged in a fixed positional relationship, so that no force is applied. The receiving portion 23 can be more accurately arranged in a desired relative positional relationship with respect to the object (support shaft 52) whose transmission should be prevented. Thereby, the "configuration in which the lifting part 52b and the stopper lid 6 are vertically separated while the regulating part 615 is in contact with the receiving part 23" can be more reliably and easily realized.

Further, since the regulating portion 615 is constituted by a plurality of regulating pieces 615a, a gap is formed between each regulating piece 615a. Therefore, when draining water from the bathtub 100 with the drain port 102 in an open state, the drain can flow through the gap, and it is therefore possible to make it more difficult for the drainage capacity to decrease due to the presence of the regulating portion 615. . As a result, good drainage capacity can be ensured even more reliably.

Furthermore, since a reinforcing portion 616 is provided that connects the lid portion 611 and the regulating portion 615, the durability of the regulating portion 615 against loads can be increased, and damage and deformation of the regulating portion 615 can be more reliably prevented. Can be done. As a result, the effect of providing the regulating portion 615 can be exerted more reliably over a longer period of time. Furthermore, in this embodiment, since the reinforcing part 616 is connected to the guide part 613, the durability of the reinforcing part 616 and, in turn, the regulating part 615 against loads can be further improved. Thereby, it is possible to more reliably prevent damage or deformation of the regulating portion 615 due to the application of a load.

In addition, in this embodiment, in a state where the attached part 612 (bottle cap 6) is attached to the upper end of the support shaft 52, when the drain port 102 is closed, the return spring 55 moves away from the support shaft. The retracting force applied to the stopper 52 is applied to the stopper lid 6 via the locking portion 52a and the like. Therefore, when the drain port 102 is in the closed state, the packing portion 62 can be brought into contact with the contact surface 24 with a relatively large pressure, and good water-stopping properties can be obtained.

Furthermore, when the attached part 612 is detached from the upper end of the support shaft 52, by applying a downward force to the stopper lid 6 while installing the attached part 612 on the upper end of the support shaft 52, An attached portion 612 can be attached to the upper end of the support shaft 52. Therefore, the attached portion 612 can be easily attached to the support shaft 52. Further, when force is applied to the stopper lid 6 to attach the attached part 612 to the support shaft 52, the regulating part 615 may come into contact with the receiving part 23, so that an excessive load is not applied to the support shaft 52 during attachment. No need to worry. As a result, by simply applying a downward force to the stopper lid 6, the attached part 612 (stopper lid 6) can be easily attached to the support shaft 52 without causing damage or deformation of the support shaft 52, etc. Can be done.

Furthermore, even if a large downward force (load) is applied when the drain port 102 is in the open state (the support shaft 52 is in the upwardly moved state), the absorber spring 54 allows the water to be The load applied to the support shaft 52 can be absorbed. Thereby, when the drain port 102 is in the open state, damage and deformation of the support shaft 52 and various parts related thereto can be more reliably prevented. As a result, according to this embodiment, damage or deformation of the support shaft 52 etc. due to downward force applied to the stopper lid 6 can be effectively prevented, regardless of whether the drain port 102 is in the closed or open state. can be prevented.

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, the receiving portion 23 is formed by the upper end surface of the drain port member 2, but may be formed by a portion other than the upper end surface of the drain port member 2. Therefore, for example, the attachment member 4 or the bottom wall portion 101 of the bathtub 100 may constitute the receiving portion. Further, the receiving portion may be configured by a component provided separately from the drain port member 2, the attachment member 4, and the like.

(b) In the embodiment described above, the receiving portion 23 has a continuous annular shape along the circumferential direction of the drain port member 2. On the other hand, as shown in FIG. It may also be configured by the piece portion 23a. That is, the receiving portion 23 may be discontinuous rather than continuous in an annular shape, and a gap 23b may be formed between each receiving piece portion 23a. With this configuration, when the drain port 102 is opened to drain water from the bathtub 100, the waste water easily flows into the drain port member 2 (drainage channel) through the gap 23b. As a result, even if the drainage capacity is slightly reduced due to the presence of the regulating portion 615, the reduction in capacity can be compensated for and a sufficiently good drainage capacity can be more reliably ensured.

In order to improve drainage performance, the width of the gap 23b (the distance between the receiving pieces 23a along the circumferential direction of the drain port member 2) is the width of the regulating piece 615a (in the outer circumferential direction of the stopper lid 6). The width of the regulating piece 615a along the width of the regulating piece 615a is preferably greater than or equal to the width of the regulating piece 615a. However, when the width of the gap 23b is set to be larger than the width of the regulating piece part 615a, for example, a means for regulating the rotation of the stopper lid 6 (regulating part 615) with respect to the drain outlet member 2, etc., is provided in the regulating piece part 615a in the gap 23b. It is preferable to provide a means to prevent this from dropping.

On the other hand, in terms of making it possible for the regulating part 615 to come into contact with the receiving part 23 (receiving piece part 23a) more reliably without providing a means for preventing the regulating piece part 615a from falling into the gap 23b, the gap It is preferable that the width of the regulating piece 23b is smaller than the width of the regulating piece 615a. Therefore, in terms of drainage performance, it is preferable that the width of the gap 23b is greater than or equal to the width of the regulating piece 615a, and in terms of preventing increases in manufacturing costs and complication of the device, the width of the gap 23b should be set equal to or larger than the width of the regulating piece 615a. It is preferable that the width be smaller than the width of 615a.

(c) In the above embodiment, the plate-shaped rib as the reinforcing part 616 is connected to the regulating part 615, but as shown in FIG. The shaped base portion 614 and the lid portion 611 may be configured to be connected. In this case, it becomes possible to more reliably prevent damage and deformation of the flanged base 614, and as a result, the effect of the regulating part 615 provided on the outer periphery of the flanged base 614 can be maintained for a longer period of time. , and can be more reliably demonstrated.

(d) In the above embodiment, the regulating piece 615a has a rectangular shape in plan view, but the shape of the regulating piece 615a is not limited to this. Therefore, for example, as shown in FIG. 7, the regulating piece portion 615a may be configured to have a triangular shape in plan view. Further, as shown in FIG. 8, the regulation piece part 615a is formed integrally with the reinforcing part 616 without providing the flange-like base part 614, so that the regulation piece part 615a and the reinforcing part 616 are plate-shaped as a whole. may be configured.

Additionally, the restricting portion 615 may be formed integrally with the lid portion 611. For example, a projection may be provided on the back surface (lower surface) of the lid portion 611, and the restriction portion may be configured by the projection. Further, the regulating portion may be simply formed by a part of the back surface (lower surface) of the lid portion 611 without providing a protrusion or the like.

Further, the restriction portion 615 is not necessarily constituted by a plurality of restriction piece portions 615a spaced apart from each other, but may be constituted by a continuous annular portion.

(e) In the above embodiment, the lifting portion 52b is formed by the upper end surface of the support shaft 52, but the lifting portion 52b may be formed from other parts of the support shaft 52. For example, when the support shaft 52 moves upward, the lifting portion may be formed by a stepped portion (shoulder portion) that comes into contact with the attached portion 612 and lifts it.

(f) In the above embodiment, the pipe 3 is connected to the bathtub 100 using the drain port member 2, but the pipe 3 is connected to the bathtub 100 by, for example, screwing, without providing the drain port member 2. It may be configured to connect. In this case, the receiving portion may be constituted by the attachment member 4, the bottom wall portion 101 of the bathtub 100, or the like.

(g) The configuration of the packing part 62 in the above embodiment is an example, and the configuration of the packing part 62 may be changed as appropriate.

Further, in the embodiment described above, the packing portion 62 is arranged on the outer periphery of the guide portion 613, and the guide portion 613 constitutes a “cylindrical portion”. On the other hand, a cylindrical part protruding downward from the back surface (lower surface) of the lid part 611 may be provided separately from the guide part 613, and the packing part may be disposed on the outer periphery of the cylindrical part.

(h) In the above embodiment, when a heavy object is placed on the stopper lid 6 or the stopper lid 6 is stepped on, the stopper lid 6 sinks downward, and the regulating portion 615 comes into contact with the receiving portion 23. are listed. On the other hand, when the force applied to the stopper lid 6 is smaller, the stopper lid 6 may be configured to sink downward and the regulating portion 615 may come into contact with the receiving portion 23 . For example, the stopper lid 6 may sink downward due to the water pressure applied from the water stored in the bathtub 100, and the regulating portion 615 may come into contact with the receiving portion 23. With this configuration, it is possible to more reliably prevent excessive load from being applied to the packing section 62 due to the application of water pressure, and the packing section 62 can be effectively protected.

(i) In the above embodiment, the contact target portion is configured by the contacted surface 24, but the contact target portion may be configured by a portion other than the contact target surface 24. Therefore, for example, the bathtub 100 (bottom wall portion 101) may constitute the contact target portion.

(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, 2... Drain port member, 23... Receiving part, 23a... Receiving piece part, 24... Contact surface (contact target part), 6... Plug lid, 52... Support shaft, 52a... Locking part, 52b... Lifting part, 54... Absorber spring (shock absorber means), 55... Return spring (retracting force applying part), 62... Packing part, 611... Lid part, 612... Mounted part, 612a... Locked part, 613 ...Guide part (cylindrical part), 615...Regulation part, 615a...Regulation piece part, 616...Reinforcement part, 100...Bathtub (tank body), 101...Bottom wall part, 102...Drain port.

Claims (8)

a stopper lid having an annular packing portion and for opening and closing a drain hole formed in a bottom wall portion of the tank body;
Equipped with a support shaft configured to be able to move up and down,
The support shaft has a lifting part that lifts the stopper lid while coming into contact with the stopper lid when the support shaft moves upward;
As the support shaft moves downward, the packing portion comes into contact with a predetermined contact target portion, thereby closing the drain port, while as the support shaft moves upward, the lid is lifted by the lifting portion. A drain plug device configured such that the drain port is opened when the packing part is separated from the contact target part,
When the drain port is in a closed state, when a downward force is applied to the faucet lid, the packing portion is elastically deformed, and the faucet lid is configured to be able to sink downward;
The stopper lid is a regulating part that prevents the stopper cover from sinking further by contacting a predetermined receiving part in a state in which the stopper cover sinks downward when the drain port is in a closed state. Equipped with
A drain plug device characterized in that the lifting portion and the plug lid are vertically spaced apart in a state in which the regulating portion is in contact with the receiving portion. a cylindrical drain member inserted into the drain port and whose inner space constitutes a flow path for drainage from the tank;
The drain plug device according to claim 1, wherein the receiving portion is constituted by an upper end surface of the drain port member. The drain plug device according to claim 2, wherein the receiving portion is constituted by a plurality of receiving pieces provided at intervals along the circumferential direction of the drain port member. The drainage according to any one of claims 1 to 3, wherein the regulating portion is constituted by a plurality of regulating pieces provided at intervals along the outer circumferential direction of the stopper lid. Stopper device. The stopper lid is
a plate-shaped lid portion located above the regulating portion;
The drain plug device according to any one of claims 1 to 4, further comprising a reinforcing part that connects the lid part and the regulating part. The stopper lid includes a cylindrical part that protrudes downward from the back surface of the lid part, and the packing part is disposed on the outer periphery of the cylindrical part,
The drain plug device according to claim 5, wherein the reinforcing portion is connected to the cylindrical portion. comprising a retraction force applying part that applies a retraction force to the support shaft in a downward movement direction thereof,
The stopper lid is
a plate-shaped lid portion located above the regulating portion;
an attached part provided on the back side of the lid part and attached to the upper end part of the support shaft;
The support shaft is provided with a predetermined locking portion, and
The attached part is provided with a locked part that can be locked by the locking part,
In a state where the attached part is attached to the upper end of the support shaft, the pulling force applied from the pulling force applying part to the support shaft is stopped by the locking part and the locking part. configured to be applied to the stopper lid via the locked portion,
In a state where the attached part is detached from the upper end of the support shaft, applying a downward force to the stopper cover while installing the attached part on the upper end of the support shaft, the support shaft is removed. The drain plug device according to any one of claims 1 to 6, wherein the drain plug device is configured such that the attached portion can be attached to an upper end portion of the drain plug device. A claim characterized by comprising shock absorber means for absorbing a load applied to the support shaft through the stopper cover when a downward force is applied to the stopper cover when the drain port is in an open state. Item 8. The drain plug device according to any one of Items 1 to 7.

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