JP7396648B2 - Drain plug device - Google Patents

Description

The present invention relates to a drain plug device for opening and closing a 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.). BACKGROUND ART As a drain plug device, one is known that includes a reciprocating plug cap unit that includes a rod-shaped support shaft and a plug cap attached to one end (upper end) of the support shaft. In such a drain plug device, as the stopper unit moves forward (upwards), the stopper separates from the tank body or the parts attached to it, thereby opening the drain port and preventing the return of the stopper unit. With the movement (downward movement), the stopper lid comes into contact with the tank body and the above-mentioned parts, thereby closing the drain port.

Furthermore, there are known stopper lids that include a disc-shaped stopper main body and a cylindrical inserted portion provided at the center of the back surface of the stopper main body. In such a cap, the support shaft is inserted into the inner periphery of the inserted part, and one end (upper end) of the support shaft is fitted into the inserted part, thereby attaching the cap to the support shaft. It looks like this. Here, as a method for attaching the stopper lid to the support shaft, a method using an annular elastic member made of a flexible material has been proposed (see, for example, Patent Document 1).

To explain this method specifically, an annular groove extending in the circumferential direction of the support shaft is formed on the outer periphery of one end of the support shaft, while an annular groove extending in the circumferential direction of the support shaft is formed on the inner periphery of the inserted part. The elastic member is embedded with a portion protruding from the inner circumferential surface of the inserted portion. Then, by pushing one end of the support shaft into the inner periphery of the inserted part and arranging the inner periphery of the elastic member in the groove, the stopper lid is attached to the support shaft along the longitudinal direction of the support shaft. The stopper lid is attached to one end of the support shaft while restricting relative movement, that is, preventing the support shaft from coming off from the inserted portion. In addition, the stopper lid can be removed from the support shaft by pulling out the support shaft from the inserted portion, contrary to the installation process. Note that a rubber O-ring can be considered as the elastic member.

In addition, a C-ring made of resin is provided on the outer periphery of one end of the support shaft, and a recess (annular groove) with a relatively large inner diameter is provided on the inner periphery of the inserted portion, and the C-ring is placed in the recess. By doing this, it is also possible to attach the cap to one end of the support shaft while restricting the relative movement of the cap to the support shaft along the longitudinal direction of the support shaft, that is, preventing the support shaft from coming off from the inserted part. It has been proposed (for example, see Patent Document 2). Note that in this method, it is also possible to use an O-ring instead of the C-ring.

Patent No. 3928144 JP2017-166130 Publication

Furthermore, in the stopper unit, a member such as a hair catcher is attached to the other end (lower end) of the support shaft or to the outer peripheral part of the support shaft in the middle in the longitudinal direction (hereinafter referred to as "intermediate outer peripheral part"). may be adopted. Here, a member such as a hair catcher has the same property as a stopper lid in that it is attached to a support shaft. Therefore, in attaching the member to the support shaft, it is conceivable to use the above-mentioned method of attaching the stopper lid and the support shaft. For example, when attaching a member such as a hair catcher to the other end of the support shaft, an inserted part having a recess on the inner periphery is provided on the member, and a C-ring or O-ring is attached to the outer periphery of the other end of the support shaft. The member can be attached to the other end of the support shaft by inserting the other end of the support shaft into the inner periphery of the inserted part and placing a C ring or the like in the recess. is possible. In addition, when attaching a member such as a hair catcher to the intermediate outer periphery of the support shaft, an inserted portion having the same configuration as above is provided on the member, and a C-ring or the like is arranged at the intermediate outer periphery of the support shaft. It is conceivable that the support shaft is inserted into the inner periphery of the inserted portion and a C-ring or the like is disposed in the recessed portion, so that the member is attached to the intermediate outer periphery of the support shaft.

However, in each of the above methods, it is necessary to provide O-rings and C-rings separately from components such as the stopper lid and hair catcher (hereinafter collectively referred to as "attached components") that are attached to the support shaft. Therefore, there is a risk that costs related to manufacturing, maintenance, etc. will increase.

Furthermore, since C-rings and the like are relatively small, in the method of arranging C-rings and O-rings around the outer periphery of the support shaft, when the attached member is removed from the support shaft during cleaning, for example, If you remove the C-ring, etc., there is a risk that you will lose the C-ring, etc. If you lose the C-ring, etc., even if you insert the support shaft into the inner circumference of the inserted part, you will not be able to control the relative movement of the attached member to the support shaft along the longitudinal direction of the support shaft. . In such a state, the attachment state of the attached member to the support shaft becomes unstable, and for example, if the attached member is a stopper lid, there is a risk that it will be difficult to close the drain port.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a drain plug device that can reduce manufacturing costs and the like.

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. Equipped with a reciprocating stopper unit having a rod-shaped support shaft,
A drain plug device configured to be able to switch the open/closed state of a drain provided in a tank body by the stopper unit as the stopper unit moves back and forth,
The stopper lid unit has an inserted part through which the support shaft can be inserted, and an attached member that is attached to the support shaft with the support shaft inserted into the inserted part,
A recess is provided in an inner peripheral portion of the inserted portion through which the support shaft is inserted,
The support shaft is
a rod-shaped shaft body;
a mounting protrusion protruding from the outer periphery of the shaft body;
a slit extending from an end of the shaft body to at least a position past the mounting protrusion;
The shaft main body portion and the mounting protrusion portion are integrally formed from one member, and are configured to be elastically deformable by increasing or decreasing the width of the slit,
By inserting the support shaft into the inserted portion and placing the mounting protrusion in the recess, the attached member can move relative to the support shaft along the longitudinal direction of the support shaft. A drain plug device characterized in that the attached member is attached to the support shaft in a regulated state.

The "attached member" includes, for example, a stopper lid attached to one end (upper end) of the support shaft, a member (component) such as a hair catcher attached to the other end of the support shaft, and the longitudinal length of the support shaft. A member such as a hair catcher attached to the intermediate portion in the direction can be mentioned. In addition, "a state in which the relative movement of the attached member to the support shaft along the longitudinal direction of the support shaft is restricted" refers to the forward and backward movement of the attached member relative to the support shaft along the longitudinal direction of the support shaft. This includes not only a state in which both movements are restricted, but also a state in which only one of the forward and backward movements of the attached member relative to the support shaft along the longitudinal direction is restricted.

According to the above means 1, by a relatively simple method that utilizes elastic deformation of the support shaft, the attached member can be attached to the support shaft while the relative movement of the attached member to the support shaft is restricted along the longitudinal direction of the support shaft. A member to be attached can be attached. That is, for example, by pushing the support shaft into the inner periphery of the inserted part, the support shaft is inserted into the inner periphery of the inserted part while elastically deforming the support shaft so that the width of the slit is reduced. Finally, the attachment protrusion reaches the recess and the elastic deformation of the support shaft is completely or to some extent released, so that the attachment protrusion is disposed in the recess. As a result, the attached member can be attached to the support shaft while relative movement of the attached member with respect to the support shaft along the longitudinal direction of the support shaft is restricted.

Further, the attached member can be removed from the support shaft by a simple method of applying a force to the support shaft or the like in a direction to remove the support shaft from the inserted portion by utilizing the elastic deformation of the support shaft. That is, by applying a force in the direction of removing the support shaft from the inserted part to the support shaft or the attached member, for example, the width of the slit is reduced by contact of the mounting protrusion with the inner circumference of the inserted part. While the support shaft is elastically deformed, the mounting protrusion comes off from the recess. Thereafter, by continuing to apply the force, the support shaft finally comes out of the inserted portion, and the attached member can be removed from the support shaft.

In addition, according to the above-mentioned means 1, the shaft main body portion and the mounting protrusion portion are an integral part made of one material (for example, resin, etc.). Therefore, compared to the prior art configuration in which the O-ring and the C-ring are provided separately from the support shaft and the attached member, it is possible to extremely effectively reduce manufacturing, maintenance, etc. costs.

Furthermore, according to the above-mentioned means 1, since the shaft body and the mounting protrusion are integrated, the mounting protrusion does not come off from the shaft body. Therefore, when the attached member is removed from the support shaft, for example, there will be no loss of parts (such as the C-ring), and convenience for the user can be improved. Furthermore, from the viewpoint of manufacturing and mounting the device, by integrating the shaft body and the mounting protrusion, parts management can be facilitated. Furthermore, since there is no need to provide a C-ring or the like around the outer periphery of the support shaft during manufacturing (during assembly), work efficiency in manufacturing and assembly can be improved.

In addition, in a configuration in which a C-ring or the like is provided around the outer periphery of the support shaft as in the prior art, the C-ring or the like can move relative to the support shaft, albeit slightly, and as a result, the impact on the support shaft is reduced. There is a possibility that the mounting member may become loose. On the other hand, according to the above-mentioned means 1, since the mounting protrusion does not move relative to the shaft body, it is possible to more reliably suppress the rattling of the attached member with respect to the support shaft, and The attachment stability of the attached member can be improved.

Means 2. The drain plug device according to means 1, wherein the slit is configured to be hidden by the inserted portion when the attached member is attached to the support shaft. .

According to the above-mentioned means 2, the slit can be hidden by the inserted portion in a state where the attached member is attached to the support shaft. As a result, it is possible to improve the appearance quality, and it is also possible to more reliably prevent dirt from adhering within the slit. Further, since it is possible to suppress the elastic deformation of the support shaft from being inhibited due to foreign matter entering the slit, it becomes possible to remove the attached member from the support shaft without any trouble.

Means 3. The support shaft is configured such that it can come into contact with the attached member while protruding from the inner periphery of the inserted portion when the attached member is attached to the support shaft. Equipped with an exit part,
3. The drain plug device according to means 1 or 2, wherein the slit extends from an end of the shaft main body to a position in front of the projecting portion.

Note that "becomes in a contactable state" does not mean only when there is actual contact in the normal mounting state, but also when the support is not supported in the normal mounting state due to, for example, force being applied to the mounted member. This also includes a case where the space (play) that existed between the shaft and the inserted part disappears, and when the mounted part approaches the overhang part more than in the normal mounting state, they come into contact with each other.

According to the above-mentioned means 3, when the attached member is attached to the support shaft, the projecting portion comes into contact with the attached member while protruding from the inner periphery of the inserted portion. Therefore, based on the positional relationship between the overhang and the attached member (particularly the area that is expected to come into contact with the overhang), it is possible to easily check whether the attached member is properly attached to the support shaft. , it is possible to improve the convenience related to manufacturing/assembly, disassembly and cleaning by the user, etc. Further, the attached member can be supported by the overhang, and the attachment stability of the attached member to the support shaft can be further improved.

Furthermore, according to the above means 3, the slit extends from the end of the shaft body to a position in front of the overhang, and does not reach the overhang. Therefore, there is no possibility that the outer diameter of the projecting portion changes due to an increase or decrease in the slit width. As a result, the attached member can be more stably supported by the overhanging portion, and the above effect (improvement of attachment stability of the attached member to the support shaft) can be more effectively exerted.

Means 4. The attached member is attached to one end or the other end of the shaft main body,
The slit is open at one end or the other end of the shaft body portion located on the side to which the attached member is attached, while the slit is opened at one end or the other end of the shaft body portion located on the opposite side to the opening. It is configured so that it does not reach
According to any one of the means 1 to 3, the mounting protrusion is provided on a side opposite to the opening of the slit with respect to the center of the slit along the longitudinal direction of the shaft main body. Drain plug device.

According to the above-mentioned means 4, the portion of the shaft main body portion located between the attachment protrusion and one end or the other end where the slit opens can be made relatively long. Therefore, by using this part as a guide, it is possible to more easily insert the support shaft into the inner periphery of the inserted part, making it more convenient for manufacturing, assembly, and when the user disassembles and cleans it. can be improved.

Furthermore, according to the above-mentioned means 4, the amount of change in the outer diameter of the attachment protrusion can be made relatively small with respect to the increase or decrease in the slit width. That is, when a force is applied to the support shaft or the like in the direction of pulling out the support shaft from the inserted portion, the amount of change in the outer diameter of the mounting protrusion relative to this force can be made relatively small. Therefore, when force is applied to a mounted member, etc., it is more secure to prevent the mounted member from unintentionally coming off the support shaft or from shifting the mounting position of the mounted member with respect to the support shaft. It can be prevented. As a result, the attachment stability of the attached member to the support shaft can be further improved.

FIG. 3 is a sectional view of the drain plug device. FIG. 3 is a perspective view of the support shaft, etc., with the stopper lid removed from the support shaft. It is a sectional view of a support shaft, a stopper lid, etc. FIG. 3 is an enlarged sectional view of the end of the support shaft. It is a sectional view of a stopper lid unit in another embodiment. In another embodiment, it is a perspective view of the stopper lid unit in a state where the hair catcher is removed from the support shaft. In another embodiment, it is a sectional view of the stopper unit with the hair catcher removed from the support shaft. In another embodiment, it is a sectional view of a stopper lid unit having a hair catcher attached to the middle part of the support shaft. In another embodiment, it is a sectional view of a stopper lid unit in which a lower disposed portion is attached to a support shaft.

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 washbasin 100 as a tank body, and includes an operating device 10, a drain port member 2, piping 3, an attachment member 4, and an operating shaft mechanism 5. and a stopper lid unit 6.

The washbowl 100 includes a bottom wall part 101 constituting the bottom surface thereof, a side wall part (not shown) standing upright on the outer peripheral edge of the bottom wall part 101, and a side wall part (not shown) protruding outward from the upper end of the side wall part. A flange portion 105 is provided. The bottom wall portion 101 includes a cylindrical hanging portion 102 that hangs down so that its inner diameter gradually decreases downward, and an inner flange-shaped overhang portion 103 that protrudes inward from the lower end of the hanging portion 102. have. Further, a drain port 104 is formed through the bottom wall portion 101 (projection portion 103). On the other hand, the side wall portion is provided with an overflow port (not shown) for preventing water from overflowing. Further, the flange portion 105 is formed with a through hole 106 for attaching the operating device 10 thereto.

The operating device 10 is a device for remotely controlling the open/close state of the drain port 104. The operating device 10 includes a holding guide portion 11 fixed to the flange portion 105 while being inserted into the through hole 106, and a rod-shaped operating device inserted into the inner periphery of the holding guide portion 11 so as to be movable back and forth. 12. The holding guide section 11 functions as a mounting section for the operating device 10 to the flange section 105, and also has the role of holding the operating section 12 and guiding its movement. The operating unit 12 includes a knob at its upper end and functions as an object to be operated by the user.

Further, one end portion of a cylindrical tube member 13 is fixed to the lower end portion of the holding guide portion 11, and a transmission member 14 made of, for example, metal strands is inserted into the tube member 13. has been done. One end of the transmission member 14 is connected to the lower end of the operating section 12, and the transmission member 14 reciprocates within the tube member 13 as the operating section 12 moves back and forth.

The drain port member 2 is formed in a cylindrical shape and is inserted into the drain port 104 so that its central axis and the center axis of the drain port 104 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 .

The pipe 3 is a part that constitutes a drainage flow path, and includes a pipe main body 31 and a branch pipe 32. In this embodiment, water in the washbasin 100 can be discharged through a drainage channel formed by the hanging portion 102, the drain port member 2, and the piping main body portion 31.

The piping main body 31 has a cylindrical shape extending in the vertical direction, and is provided with a female thread 31a on the inner periphery of its upper end. Then, while inserting the drain port member 2 into the drain port 104, the male threaded portion 22 is screwed into the female thread portion 31a, and the bottom wall portion 101 is sandwiched between the collar portion 21 and the upper end surface of the pipe 3. The piping 3 is connected and both are attached to the washbasin 100. In this embodiment, the upper end of the piping main body 31 has a flange-like shape, and an elastically deformable material (for example, resin or rubber) is provided between the flange-shaped portion and the back surface of the bottom wall 101. An annular sealing member 7 formed of a material (such as a metal material) is disposed. The seal member 7 prevents water from leaking between the drain port member 2 and piping 3 and the washbasin 100.

Further, an annular stepped portion 31b is provided on the inner periphery of the pipe main body portion 31 and at a position below the branch pipe 32. The stepped portion 31b functions as a portion where the attachment member 4 is installed.

Furthermore, a tube insertion hole 31c is formed below the stepped portion 31b in the piping main body portion 31. In this embodiment, the tube member 13 and the transmission member 14 are inserted into the pipe body 31 from outside by being inserted into the tube insertion hole 31c. Note that a cylindrical bush member 8 made of an elastically deformable material is interposed between the surface of the pipe body 31 that forms the tube insertion hole 31c and the outer peripheral surface of the tube member 13. As a result, water leakage through the tube insertion hole 31c is prevented.

The branch pipe 32 is a cylindrical portion extending from the outer periphery of the pipe main body 31 in a direction intersecting the direction in which the pipe main body 31 extends. The branch pipe 32 has an internal space that communicates with the internal space of the piping main body 31, and is connected to the overflow port via a connecting pipe (not shown). Thereby, the waste water that has passed through the overflow port flows into the pipe main body 31 through the connecting pipe and the branch pipe 32.

The attachment member 4 is for holding the operating shaft mechanism 5 in the drainage flow path, and is installed on the inner periphery of the piping main body 31 in this embodiment. Note that the attachment member 4 may be installed on the inner periphery of the drain port member 2. The attachment member 4 includes an outer ring portion 41, a connecting portion 42, and a holding portion 43.

The outer ring portion 41 functions as a mounting portion for the attachment member 4 to the piping main body portion 31. In this embodiment, the attachment member 4 is attached to the piping main body 31 by placing the outer ring portion 41 on the stepped portion 31b.

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 are arranged in plurality (in this embodiment, three at equal intervals) at intervals along the circumferential direction of the holding portion 43. ) are provided. The drainage water that has flowed into the pipe main body 31 is configured to flow downstream through the gaps between the connecting parts 42.

The holding portion 43 is for holding the actuating shaft mechanism 5 on its inner periphery. 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 .

The operating shaft mechanism 5 is a mechanism for vertically moving the stopper unit 6, and includes an operating shaft 51, a first stopper part 52, and a second stopper part 53. Note that the actuation shaft mechanism 5 may include a cylindrical component through which the actuation shaft 51 is inserted in a reciprocating manner.

The actuating shaft 51 has a cylindrical shape and is disposed on the inner periphery of the holding portion 43 so as to be movable up and down. In addition, when the actuation shaft mechanism 5 has the cylindrical part, the cylindrical part and the actuation shaft 51 are inserted and installed in the inner periphery of the holding part 43.

The upper end of the actuating shaft 51 is configured to be able to come into contact with the stopper unit 6, while the lower portion of the actuating shaft 51 is configured to be able to come into contact with the other end of the transmission member 14. As the transmission member 14 reciprocates as the operating portion 12 is operated, the operating shaft 51 reciprocates (up and down), which in turn causes the stopper unit 6 to reciprocate (up and down).

The first stopper part 52 and the second stopper part 53 each have a cylindrical shape, and are arranged in a line along the axial direction of the holding part 43 so as to close the opening on the lower end side of the holding part 43. It is being The first stopper part 52 and the second stopper part 53 prevent the operating shaft 51 from coming off from the holding part 43 and function as a connection part for the other end of the tube member 13. In this embodiment, the other end of the tube member 13 is sandwiched between the first stopper part 52 and the second stopper part 53, so that the other end of the tube member 13 is connected to the actuating shaft mechanism 5. has been done.

The stopper unit 6 is used to open and close the drain port 104 and to collect foreign matter such as garbage contained in the drain water. The lid unit 6 includes a support shaft 61, a lid 62, a lower portion 63, and a hair catcher 64. In this embodiment, the stopper lid 62 corresponds to the "attached member". The faucet lid unit 6 can be pulled out from the drain port member 2 or the piping main body 31 (drainage flow path) by being pulled upward from the front side (water storage space side) of the washbowl 100. , the hair catcher 64 can be easily cleaned.

The support shaft 61 has a rod shape as a whole, and is disposed approximately at the center of the drain port member 2 and the pipe body 31, that is, in the drainage flow path. The lower end portion of the support shaft 61 has a cylindrical shape, and the tip of the operating shaft 51 is disposed inside the cylindrical portion. On the other hand, a stopper lid 62 is attached to the upper end of the support shaft 61. Note that the structure related to the attachment of the support shaft 61 and the stopper lid 62 will be described in detail later.

The stopper lid 62 is a stopper for opening and closing the drain port 104. The lid 62 includes a disc-shaped lid main body 621 made of resin or the like, and an annular packing part 622 made of an elastically deformable material and attached to the outer peripheral side of the rear surface of the lid main body 621. are doing.

In this embodiment, the transmission member 14 moves forward (moves from the operating section 12 side to the operating shaft mechanism 5 side) as the operating section 12 is pushed down, and the operating shaft 51 and the cap unit 6 move upward. As a result, the packing portion 622 is spaced apart from the bottom wall portion 101, thereby opening the drain port 104. On the other hand, in this state, the transmission member 14 moves back in response to the lifting operation on the operating section 12, and the actuating shaft 51 and the stopper unit 6 move downward, so that the entire outer circumference of the packing section 622 is transferred to the bottom wall section 101. By contacting with, the drain port 104 is closed.

The lower disposed portion 63 is provided at the lower end of the support shaft 61, and includes a plurality of arm portions 63a extending radially from the outer periphery of the support shaft 61, and an annular ring connected to each tip of the arm portions 63a. and an outer ring portion 63b (see FIG. 2). A handle portion 64b of the hair catcher 64, which will be described later, can be inserted through the gap formed between adjacent arm portions 63a, and by placing the handle portion 64b in the gap, it can be supported. Rotation of the hair catcher 64 with respect to the shaft 61 can be regulated. That is, the lower disposed portion 63 has a function of regulating the rotational movement of the hair catcher 64 when cleaning the hair catcher 64 or the like. Further, the outer circumferential surface of the outer ring portion 63b is arranged along the inner circumferential surface of the piping main body portion 31. Thereby, the lower disposed portion 63 cooperates with the hair catcher 64 to suppress the occurrence of inclination or positional shift in the horizontal direction in the support shaft 61. Further, the lower disposed portion 63 is capable of collecting foreign matter such as garbage contained in the waste water, and also functions as a second hair catcher.

Note that, as described above, the lower disposed portion 63 in this embodiment has various functions such as the function of regulating the rotation of the hair catcher 64 and the function of collecting foreign matter, but it does not necessarily have all of these functions. do not have to. Therefore, for example, the lower portion 63 may have only the function of collecting foreign matter. Further, the functions of the lower disposed portion 63 are not necessarily limited to the above-mentioned functions, and the lower disposed portion 63 may have functions other than those described above. Of course, a configuration in which the lower disposed portion 63 is not provided may be adopted.

The hair catcher 64 is for collecting foreign matter such as dirt and hair contained in the waste water. The hair catcher 64 is disposed on the inner periphery of the hanging portion 102 and placed on the flange portion 21 of the drain port member 2.

Moreover, the hair catcher 64 in this embodiment includes a dish-shaped collecting part 64a in which many holes for water passage are formed, and a handle part protruding downward from the lower surface (back surface) of the collecting part 64a. 64b. Further, the hair catcher 64 has the support shaft 61 inserted through a hole provided at the center of the collection portion 64a, and is moved relative to the support shaft 61 along the axial direction of the support shaft 61. It is possible. Thereby, when the support shaft 61 moves up and down to switch the open/closed state of the drain port 104, the hair catcher 64 continues to be placed at a fixed position without moving up and down.

The handle portion 64b functions as a handle for the user when cleaning the hair catcher 64 after pulling out the stopper lid unit 6 from the drainage flow path. By having the handle portion 64b, it is possible to restrict the relative rotation of the hair catcher 64 with respect to the support shaft 61, and to easily clean the hair catcher 64 (particularly the collecting portion 64a). In this embodiment, as described above, the relative rotation of the hair catcher 64 with respect to the support shaft 61 can also be restricted by arranging the handle portion 64b in the gap between the arm portions 63a. .

Next, a configuration regarding attachment of the support shaft 61 and the stopper lid 62 will be explained. As shown in FIGS. 2 and 3, the support shaft 61 includes a rod-shaped shaft main body portion 611 and a mounting protrusion 612 protruding from the outer periphery of the shaft main body portion 611. The shaft body portion 611 has a relatively small diameter portion 611a constituting one end side portion (tip side portion) of the shaft body portion 611, and a constant outer diameter along the central axis direction of the shaft body portion 611. , a large diameter part 611b having a larger diameter than the small diameter part 611a, and a step-like protruding part 611c located between the small diameter part 611a and the large diameter part 611b, and has a cylindrical shape as a whole. ing.

The attachment protrusion 612 is provided on the outer periphery of the narrow diameter portion 611a, and has an annular (flange-like) shape as a whole, although it is interrupted at a location where a slit 613, which will be described later, is formed. The outer diameter of the mounting protrusion 612 (more precisely, the diameter of an imaginary circle that overlaps the outer circumferential surface of the mounting protrusion 612 in a cross section that is perpendicular to the central axis of the shaft body 611 and passes through the attachment protrusion 612) is as described above. The outer diameter is smaller than the outer diameter of the large diameter portion 611b. Further, a portion of the outer circumferential surface of the mounting protrusion 612 that is continuous with the outer circumferential surface of the narrow diameter portion 611a has a tapered shape, and the outer circumferential surface of the attachment protrusion 612 is smoothly continuous with the outer circumferential surface of the narrow diameter portion 611a. It has a shape.

In addition, in this embodiment, the mounting protrusion 612 is located closer to the opening of the slit 613 (more specifically, the slit 613 (opening located on one end surface of the shaft body portion 611). As a result, it is possible to ensure a certain length of the portion of the shaft body 611 (in the present embodiment, the narrow diameter portion 611a) located between the tip thereof and the attachment protrusion 612.

Furthermore, the support shaft 61 has a slit 613 that extends from one end of the shaft body 611 to at least a position past the attachment protrusion 612 . The slit 613 in this embodiment opens at the end (one end in this embodiment) of the shaft main body 611 located on the side where the stopper lid 62 is attached, and the slit 613 opens at the end (one end in this embodiment) of the shaft main body 611 located on the side opposite to the opening. It is configured so that it does not reach the end of the portion 611 (the other end in this embodiment). In particular, in this embodiment, the slit 613 does not reach the overhang 611c, but extends to a position in front of the overhang 611c. Furthermore, the slit 613 in this embodiment has a shape that passes through the shaft body 611 along a direction perpendicular to the central axis of the shaft body 611 .

In addition, the support shaft 61 is configured such that the shaft main body 611 and the mounting projection 612 are integrally made of one material (for example, resin, etc.), and the shaft main body 611 and the mounting projection 612 cannot be separated. . Further, the support shaft 61 can be elastically deformed by increasing or decreasing the width of the slit 613, and by increasing or decreasing the width of the slit 613, the outer diameter of the support shaft 61 (particularly the mounting protrusion 612) can be increased or decreased. is possible.

Next, the stopper lid 62 attached to the support shaft 61 will be explained in more detail. The stopper lid 62 has a cylindrical inserted portion 621a which is capable of inserting one end (particularly the narrow diameter portion 611a) of the support shaft 61 into the center of the back surface of the stopper main body 621 and is open at the lower end. We are prepared. Although the inserted portion 621a in this embodiment includes a plurality of notches 621e for die cutting during molding, etc., it may be configured without the notches 621e.

Further, in the inner peripheral part of the inserted part 621a through which the support shaft 61 is inserted, from the opening side of the inserted part 621a toward the back side, there is an opening side small diameter part 621b, a recessed part 621c, and a back side small diameter part 621d. are provided in this order.

The opening-side small diameter portion 621b is a portion that forms the opening of the inserted portion 621a. The opening side small diameter portion 621b has a substantially constant inner diameter except for both end portions along the axial direction of the inserted portion 621a, and the inner diameter is approximately the same as the outer diameter of the narrow diameter portion 611a, The outer diameter of the mounting protrusion 612 is smaller than that of the mounting protrusion 612 . The inner small diameter portion 621d is the innermost portion of the inner circumferential portion of the inserted portion 621a, and the inner diameter of most of it is approximately the same as the outer diameter of the narrow diameter portion 611a. Further, in this embodiment, a portion of the inner peripheral portion of the inserted portion 621a from the recess 621c to the opening side small diameter portion 621b and the back side small diameter portion 621d is tapered.

The recess 621c is a portion where the attachment protrusion 612 is placed when the stopper lid 62 is attached to the support shaft 61. The inner diameter of the recess 621c is approximately the same as the outer diameter of the mounting protrusion 612. Further, the recess 621c has an annular groove shape extending along the circumferential direction of the inserted portion 621a.

When the support shaft 61 and the lid 62 are configured as described above, the support shaft 61 is inserted into the inserted portion 621a and the mounting protrusion 612 is disposed in the recess 621c. The stopper cover 62 is attached to the support shaft 61 such that relative movement of the stopper cover 62 with respect to the support shaft 61 along the longitudinal direction is restricted.

Furthermore, the length and width of the slit 613 and the inserted portion 621a are adjusted so that the slit 613 can be hidden by the inserted portion 621a when the stopper lid 62 is attached to the support shaft 61. is set. In this embodiment, the notch 621e is formed in the inserted part 621a, but by aligning the notch 621e and the slit 613 so that they do not overlap, the slit 613 can be opened by the inserted part 621a. It is possible to keep it hidden.

In addition, when the stopper lid 62 is attached to the support shaft 61, the projecting portion 611c is configured to be able to come into contact with the stopper lid 62 (inserted portion 621a). Here, the "contactable state" refers not only to the state in which the contact is actually made in the normal mounting state (the state in which no special force is applied from the outside to the support shaft 61 or the stopper lid 62). For example, due to force being applied to the stopper lid 62, the space (play) that existed between the support shaft 61 and the stopper lid 62 in the normal installation state disappears, and the stopper lid 62 becomes more extended than in the normal installation state. This also includes a case where the object comes into contact with the portion 611c when approaching the portion 611c. In the present embodiment, the projecting portion 611c is in contact with the stopper lid 62 (inserted portion 621a) in the normal attachment state.

Next, a method for attaching and removing the stopper lid 62 to the support shaft 61 will be explained. First, the stopper lid 62 can be attached to the support shaft 61 in the following manner. That is, the portion of the shaft body portion 611 (small diameter portion 611a) located between the tip and the attachment protrusion 612 is inserted into the inner periphery of the inserted portion 621a, and the shaft body portion 611 and the inserted portion 621a are inserted. Arrange them in a straight line. Then, a force is applied to the support shaft 61 and the stopper lid 62 in the direction of pushing the shaft body portion 611 further into the inserted portion 621a. As a result, the tapered portion of the mounting protrusion 612 comes into pressure contact with the inserted portion 621a (particularly the portion corresponding to the opening side small diameter portion 621b), so that the width of the slit 613 is reduced and the support shaft 61 (small diameter The mounting projection 612 is inserted into the inner periphery of the inserted portion 621a while the portion 611a and the mounting projection 612) are elastically deformed. Finally, when the tip of the shaft main body part 611 comes into contact with the deepest part of the inner circumference of the inserted part 621a and the mounting protrusion 612 reaches the recess 621c, the elastic deformation of the support shaft 61 is released. The mounting protrusion 612 is arranged in the recess 621c. Thereby, the stopper lid 62 can be attached to the support shaft 61.

On the other hand, the stopper lid 62 can be removed from the support shaft 61 by applying force to the support shaft 61 and the stopper lid 62 in the direction of pulling out the support shaft 61 from the inserted portion 621a. That is, by applying such a force to the support shaft 61 etc., the mounting protrusion 612 is pressed against the inserted portion 621a (especially the portion corresponding to the tapered portion of the opening side small diameter portion 621b), and the width of the slit 613 is reduced. The support shaft 61 is elastically deformed in such a manner that the amount decreases. When the support shaft 61 is elastically deformed to the point where the outer diameter of the mounting protrusion 612 becomes equal to or less than the inner diameter of the opening side small diameter part 621b, the mounting protrusion 612 comes off from the recess 621c and passes through the opening side small diameter part 621b. The support shaft 61 is removed from the inserted portion 621a. As a result, the stopper lid 62 can be removed from the support shaft 61.

As described in detail above, according to this embodiment, the stopper lid 62 can be attached to the support shaft 61 by a relatively simple method that utilizes elastic deformation of the support shaft 61. Moreover, the stopper lid 62 can be removed from the support shaft 61 by a simple method of applying a force to the support shaft 61 and the like in the direction of pulling out the support shaft 61 from the inserted portion 621a by utilizing the elastic deformation of the support shaft 61. I can do it.

In addition, the shaft main body portion 611 and the mounting protrusion portion 612 are made of one piece. Therefore, compared to a configuration in which the O-ring and the C-ring are provided separately from the support shaft 61 and the stopper lid 62 as in the prior art, it is possible to extremely effectively reduce manufacturing, maintenance, etc. costs.

Furthermore, since the shaft body portion 611 and the attachment protrusion 612 are integrated, the attachment protrusion 612 will not come off from the shaft body portion 611. Therefore, when removing the stopper lid 62 from the support shaft 61, for example, there will be no loss of parts (such as the C-ring), and convenience for the user can be improved. Furthermore, from the viewpoint of manufacturing and mounting the device, by integrating the shaft body portion 611 and the mounting protrusion portion 612, parts management can be facilitated. Furthermore, since there is no need to provide a C-ring or the like around the outer periphery of the support shaft during manufacturing (during assembly), work efficiency in manufacturing and assembly can be improved.

In addition, the shaft body portion 611 and the attachment protrusion 612 are integral, and the attachment protrusion 612 does not move relative to the shaft body portion 611. Therefore, wobbling of the stopper lid 62 with respect to the support shaft 61 can be suppressed more reliably, and the attachment stability of the stopper lid 62 with respect to the support shaft 61 can be improved.

Furthermore, in this embodiment, when the stopper lid 62 is attached to the support shaft 61, the slit 613 can be hidden by the inserted portion 621a. Thereby, it is possible to improve the appearance quality, and to prevent dirt from adhering inside the slit 613 more reliably. Further, since it is possible to suppress the elastic deformation of the support shaft 61 from being inhibited due to foreign matter entering the slit 613, it becomes possible to remove the stopper lid 62 from the support shaft 61 without any trouble.

In addition, in this embodiment, when the stopper lid 62 is attached to the support shaft 61, the projecting portion 611c comes into contact with the stopper lid 62 while protruding from the inner periphery of the inserted portion 621a. . Therefore, based on the positional relationship between the projecting portion 611c and the stopper lid 62 (particularly the lower end of the inserted portion 621a), it is possible to easily check whether the stopper lid 62 is properly attached to the support shaft 61. This makes it possible to improve the convenience of manufacturing, assembly, and disassembly and cleaning by the user. Moreover, the stopper lid 62 can be supported by the overhanging portion 611c, and the attachment stability of the stopper lid 62 to the support shaft 61 can be further improved.

Further, the slit 613 extends from the end (one end) of the shaft body 611 to a position in front of the overhang 611c, and does not reach the overhang 611c. Therefore, there is no possibility that the outer diameter of the projecting portion 611c changes due to an increase or decrease in the width of the slit 613. As a result, the stopper lid 62 can be more stably supported by the overhanging portion 611c, and the above effect (improvement of attachment stability of the stopper lid 62 to the support shaft 61) can be more effectively exerted. can.

In addition, the attachment protrusion 612 is provided on the opposite side of the opening of the slit 613 from the center CL of the slit 613. Therefore, the portion of the shaft body 611 located between the one end where the slit 613 opens and the attachment protrusion 612 can be made relatively long. Therefore, by using this part as a guide, it becomes possible to more easily insert the support shaft 61 into the inner periphery of the inserted part 621a, which improves convenience in manufacturing, assembly, and when the user disassembles and cleans the part. can be further improved.

Furthermore, by setting the formation position of the attachment protrusion 612 as described above, the amount of change in the outer diameter of the attachment protrusion 612 can be made relatively small relative to the increase or decrease in the width of the slit 613. That is, when a force in the direction of pulling out the support shaft 61 from the inserted portion 621a is applied to the support shaft 61, etc., the amount of change in the outer diameter of the mounting protrusion 612 in response to this force can be made relatively small. can. Therefore, when force is applied to the stopper cover 62 etc., it is possible to prevent the stopper cover 62 from unintentionally coming off from the support shaft 61 or the mounting position of the stopper cover 62 relative to the support shaft 61 shifting. It can definitely be prevented. As a result, the attachment stability of the stopper lid 62 to the support shaft 61 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, the technical idea of the present invention is applied to attaching the stopper lid 62 to the support shaft 61, but may be applied to attaching parts other than the stopper lid 62 to the support shaft 61.

For example, as shown in FIGS. 5 to 7, the stopper unit 16 includes a support shaft 161, a stopper cover 162 provided at one end (upper end) of the support shaft 161, and the other end (upper end) of the support shaft 161. The technical concept of the present invention may be applied to the attachment of the hair catcher 163 to the support shaft 161.

In this case, the support shaft 161 includes a rod-shaped shaft main body 161a, a mounting protrusion 161b protruding from the outer periphery of the other end of the shaft main body 161a, and at least a mounting protrusion 161b protruding from the other end (lower end) of the shaft main body 161a. It has a slit 161c that extends to a position past the protrusion 161b, and the shaft body 161a and the mounting protrusion 161b are an integral piece made of one member, and the width of the slit 161c is elastically deformed by increasing or decreasing the width. configured as possible. On the other hand, the hair catcher 163, which corresponds to the "attached member", includes a cylindrical inserted part 163a located at the center through which the support shaft 161 is inserted, and a collecting part 163b that extends outward from the outer periphery of the inserted part 163a. and a stepped recess 163c provided on the inner circumference of the inserted portion 163a.

Then, by pushing the other end (lower end) of the support shaft 161 into the inserted portion 163a, the support shaft 161 is elastically deformed so that the width of the slit 161c is reduced, and the mounting protrusion 161b is inserted through the insertion portion. By inserting the attachment protrusion 161b into the inner periphery of the portion 163a and finally arranging the attachment protrusion 161b in the recess 163c, the hair catcher 163 can be moved relative to the support shaft 161 along the longitudinal direction of the support shaft 161 (in this example, The hair catcher 163 can be attached to the support shaft 161 while restricting one of the forward and backward movements of the hair catcher 163 relative to the support shaft 161. In this example, in order to prevent the inserted portion 163a from coming into close contact with the support shaft 161, a plurality of protrusions 163d (see FIG. 7) are provided on the inner circumference of the inserted portion 163a. A configuration in which 163d is not provided may be used.

Furthermore, as shown in FIG. 8, the stopper unit 17 is attached to the support shaft 171, the stopper cover 172 provided at one end (upper end) of the support shaft 171, and the middle part of the support shaft 171 in the longitudinal direction. In the case where a hair catcher 173 is attached, the technical concept of the present invention may be applied to attaching the hair catcher 173 to the support shaft 171.

In this case, the support shaft 171 includes a rod-shaped shaft body 171a, a mounting protrusion 171b protruding from the outer periphery of the longitudinally intermediate portion of the shaft body 171a, and at least one end (lower end) of the shaft body 171a. It has a slit 171c that extends to a position past the mounting protrusion 171b, and the shaft body 171a and the mounting protrusion 171b are an integral piece made of one member, and the width of the slit 171c is increased or decreased to provide elasticity. Constructed to be deformable. On the other hand, the hair catcher 173, which corresponds to the "attached member", includes a cylindrical inserted part 173a located at the center and into which the support shaft 171 is inserted, and a collecting part 173b that extends outward from the outer periphery of the inserted part 173a. and a stepped recess 173c provided on the inner circumference of the inserted portion 173a.

Then, by inserting the other end (lower end) of the support shaft 171 into the inserted portion 173a, the width of the slit 171c is reduced and the support shaft 171 is elastically deformed, while the mounting protrusion 171b is covered. The hair catcher 173 is moved relative to the support shaft 171 along the longitudinal direction of the support shaft 171 (in this example The hair catcher 173 can be attached to the support shaft 171 while restricting one of the forward and backward movements of the hair catcher 173 relative to the support shaft 171. In this case, the support shaft 171 and the stopper lid 172 may be separate bodies, and the slit 171c may be configured to extend from the upper end of the shaft body 171a to a position past the attachment protrusion 171b.

Further, the technical idea of the present invention may be applied to the case where a member to be attached other than a stopper lid or a hair catcher is attached to the support shaft. For example, the above technical concept can be applied when attaching a receiving member (corresponding to the "attached member") to the end (lower end) of the support shaft to receive the force applied from the vertically movable drive part. You can. In this example, the force applied from the driving section to the receiving member causes the faucet lid unit to move up and down, thereby switching the open/closed state of the drain port. In addition, it is attached to the outer circumference of the support shaft, and its outer edge is placed close to the inner circumferential surface of the drain port member 2 and the pipe 3 (the inner circumferential surface of the part that forms the drainage flow path). The above technical concept may be applied to the case where a regulating member (corresponding to a "mounted member") for regulating the inclination or horizontal displacement of the stopper lid is attached to the support shaft.

(b) In the above embodiment, the lower part 63 is formed integrally with the support shaft 61, but as shown in FIG. It may be a separate body. The technical concept of the present invention may also be applied to the attachment of the lower disposed portion 183 to the support shaft 181.

In this case, the support shaft 181 includes a rod-shaped shaft main body 181a, a mounting protrusion 181b protruding from the outer periphery of the other end (lower end) of the shaft main body 181a, and an end (lower end) of the shaft main body 181a. The shaft body 181a and the mounting projection 181b are integrally made of one member, and the width of the slit 181c is increased or decreased. It is configured to be elastically deformable. On the other hand, the lower part 183 corresponding to the "mounted member" has a cylindrical inserted part 183a located at the center and through which the support shaft 181 is inserted, and a structure similar to the arm part 63a of the above embodiment. The structure includes an arm portion 183b and the like, and a groove-shaped recess 183c provided in the inner peripheral portion of the inserted portion 183a.

Then, by inserting the other end (lower end) of the support shaft 181 into the inserted portion 183a, the width of the slit 181c is reduced and the support shaft 181 is elastically deformed, while the attachment protrusion 181b is covered. By inserting into the inner periphery of the insertion portion 183a and finally arranging the mounting protrusion 181b in the recess 183c, the relative movement of the lower disposed portion 183 with respect to the support shaft 181 along the longitudinal direction of the support shaft 181 is restricted. In this state, the lower disposed portion 183 can be attached to the support shaft 181. In addition, in FIG. 9, the support shaft 181 and the stopper lid 182 are integrated, but the support shaft and the stopper lid may be separate bodies as in the above embodiment. In this case, the technical idea of the present invention may be applied to both the attachment of the stopper lid 182 to the support shaft 181 and the attachment of the lower disposed portion 183 to the support shaft 181.

(c) In the above embodiment, the slit 613 has a shape that penetrates the shaft body 611 along a direction perpendicular to the central axis of the shaft body 611, but has a shape that does not penetrate the shaft body 611. There may be. In this case, for example, the support shaft (shaft main body portion) may be configured to have a C-shape in a cross section perpendicular to its central axis.

(d) In the above embodiment, the attachment protrusion 612 has an annular shape (flange shape) as a whole, but does not necessarily have to have such a shape. Therefore, for example, the attachment protrusion may be constituted by a plurality of protrusions (for example, dot-shaped small protrusions) provided at intervals along the circumferential direction of the shaft body portion 611. Of course, the attachment protrusion may be formed by one protrusion.

Further, in the embodiment described above, the recess 621c has an annular groove shape, but the shape of the recess may be changed as appropriate depending on the shape of the mounting protrusion. For example, the recess may be formed by a plurality of recesses provided at intervals along the circumferential direction of the inserted portion 621a, or one recess.

(e) In the above embodiment, the washbowl 100 is exemplified as the tank body, but the tank body to which the technical idea of the present invention can be applied is not limited to the washbowl. Therefore, for example, the technical idea of the present invention may be applied to bathtubs, kitchen sinks, and the like.

(f) In the above embodiment, the drain port 104 is closed when the stopper lid 62 (packing part 622) comes into contact with the bottom wall part 101, but the stopper lid 62 (packing part 622) The drain port 104 may be configured to be closed by contacting the drain port member 2.

(g) In the above embodiment, the valve cover unit 6 is configured to move up and down as the rod-shaped operating shaft 51 moves up and down, but the configuration for vertically moving the valve cover unit 6 is limited to this. It is not something that will be done. Therefore, for example, a rotating part that can be rotated about a rotating shaft extending in the horizontal direction, and a support part that protrudes into the pipe 3 (drainage flow path) and moves up and down as the rotating part rotates. The stopper lid drive mechanism may be used to move the stopper unit up and down. In this case, the supporting part moves upward as the rotating part rotates, and the stopper unit moves upward by being lifted by the supporting part, while the supporting protrusion moves upward as the rotating part rotates. By moving downward, the stopper unit will move downward due to its own weight and water pressure.

Further, a return force applying member (for example, a spring member, etc.) that applies a force in the downward movement direction to the stopper unit may be provided.

(h) The operating device 10 in the above embodiment is merely an example, and an operating device having a configuration different from that of the operating device 10 may be used. For example, the operating device may have a rotatable operating section (operating handle) or may be electrically powered. Alternatively, the drain port may be configured to be alternately opened and closed, for example, without providing an operating device, each time the stopper lid is pressed.

(i) In order to more reliably hide the slit 613 by the inserted portion 621a, when the stopper lid 62 is attached to the support shaft 61, the support shaft 61 and A positioning means for keeping the relative position of the inserted portion 621 constant may be provided. The positioning means may be provided, for example, in a recess or a convex part provided on the overhanging part 611c and on the other end of the inserted part 621a, and when the stopper lid 62 is attached to the support shaft 61, it is placed in the recess. Examples include those having a protrusion in which the protrusion is placed or a recess in which the protrusion is disposed. Further, the positioning means is configured such that the mounting protrusion 612 can be placed in the recess 621c only when the relative position of the support shaft 61 and the inserted portion 621 along the circumferential direction of the support shaft 61 becomes constant. The mounting protrusion 612 and the recess 621 may be provided.

DESCRIPTION OF SYMBOLS 1... Drain plug device, 6, 16, 17, 18... Tap lid unit, 61, 161, 171, 181... Support shaft, 62... Tap lid (attached member), 100... Wash bowl (tank body), 104... Drain port, 161a, 171a, 181a, 611... Shaft body part, 161b, 171b, 181b, 612... Mounting protrusion, 161c, 171c, 181c, 613... Slit, 163, 173... Hair catcher (attached member), 163a , 173a, 183a, 621a... inserted part, 163c, 173c, 183c, 621c... recessed part, 183... lower disposed part (attached member), 611c... overhang part.

Claims (4)

Equipped with a reciprocating stopper unit having a rod-shaped support shaft,
A drain plug device configured to be able to switch the open/closed state of a drain provided in a tank body by the stopper unit as the stopper unit moves back and forth,
The stopper lid unit has an inserted part through which the support shaft can be inserted, and an attached member that is attached to the support shaft with the support shaft inserted into the inserted part,
A recess is provided in an inner peripheral portion of the inserted portion through which the support shaft is inserted,
The support shaft is
a rod-shaped shaft body;
a mounting protrusion protruding from the outer periphery of the shaft body;
a slit extending from an end of the shaft body to at least a position past the mounting protrusion;
The shaft main body portion and the mounting protrusion portion are integrally formed from one member, and are configured to be elastically deformable by increasing or decreasing the width of the slit,
By inserting the support shaft into the inserted portion and placing the mounting protrusion in the recess, the attached member can move relative to the support shaft along the longitudinal direction of the support shaft. A drain plug device characterized in that the attached member is attached to the support shaft in a regulated state. The drain plug according to claim 1, wherein the slit is configured to be hidden by the inserted portion when the attached member is attached to the support shaft. Device. The support shaft is configured such that it can come into contact with the attached member while protruding from the inner periphery of the inserted portion when the attached member is attached to the support shaft. Equipped with an exit part,
The drain plug device according to claim 1 or 2, wherein the slit extends from an end of the shaft main body to a position in front of the projecting portion. The attached member is attached to one end or the other end of the shaft main body,
The slit is open at one end or the other end of the shaft body portion located on the side to which the attached member is attached, while the slit is opened at one end or the other end of the shaft body portion located on the opposite side to the opening. It is configured so that it does not reach
4. The mounting protrusion is provided on a side opposite to the opening of the slit, with respect to the center of the slit along the longitudinal direction of the shaft body. Drain plug device described in.

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