JP5972673B2 - Drain plug device - Google Patents

Description

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

  Conventionally, as a drain plug device, a support mechanism having a plug lid that can open and close a drain port of a tank body (for example, a bathtub or a vanity) and a support shaft that supports the plug lid so as to be movable up and down. And a release that includes a transmission unit (for example, a wire) that is connected to the support mechanism and transmits a displacement of an operation unit including a push button to the support mechanism, and the support mechanism (support And a holding member that holds the shaft) are known. Moreover, in order to connect the piping used as the flow path of drainage to a tank body (drainage port), the cylindrical drainage port member which has an external thread part on an outer periphery is used. The drain port member was formed on the inner periphery of the pipe from the front side of the tank body with a pipe (for example, elbow or ring-shaped pipe body) on the back side of the tank body (drain port). The pipe is connected to the tank body by screwing into the female screw portion and sandwiching the tank body between itself and the pipe (see, for example, Patent Document 1).

  By the way, the drain plug device is generally attached to the tank body by the following procedure. That is, after the drain port member is screwed into the pipe (the pipe is connected to the tank body), one end side (support mechanism) of the release is pulled out from the inside of the pipe through the drain port, and the support mechanism is attached to the holding member. And while attaching a holding member to a drain port member or a tank body, a drain plug apparatus is attached to a tank body by attaching a plug lid to the support shaft of the said support mechanism. When a support shaft is provided inside the holding member and the support mechanism is configured by a part of the holding member and the support shaft (that is, when the support mechanism and the holding member are integrated), The one end side of the transmission part is pulled out from the inside of the pipe through the drain port, and the outer peripheral part of the holding member is attached to the drain port member or the tank body after one end part of the pulled out transmission unit is connected to the support mechanism.

  However, since it is difficult to pull out one end side (support mechanism or transmission part) of the release from the pipe that is out of reach, it takes a lot of labor and time, and it imposes a great burden on the installation worker. There is a fear. Further, when the release is pulled out, there is a risk that the member such as the release may be damaged, such as the transmission part being cut or bent.

  Therefore, in order to improve the mounting workability and prevent damage to the member, a cylindrical portion having a male screw portion is provided on the outer peripheral side of the holding member, and the cylindrical portion is screwed into the pipe, thereby holding the holding member and the same. A support mechanism (if the holding member and the support mechanism are integrated) is attached to the pipe in advance (that is, the support mechanism is previously connected). A technique has been proposed in which the pipe is connected to the tank body by screwing the drain port member into the pipe (for example, see Patent Document 2). However, in this technique, after the drain port member is screwed to the pipe, the holding member disposed below the drain port member is moved upward, and the upper surface portion of the cylindrical portion is moved to the lower surface of the drain port member. By contacting the part, the support mechanism and thus the stopper lid attached to the support mechanism are arranged at a normal position. That is, after screwing the drain port member, it is necessary to move only the holding member disposed below (the back side) the drain port member. Therefore, there is a possibility that the mounting workability cannot be sufficiently improved.

  It is possible to arrange the holding member in advance at a position where it will be finally arranged with respect to the piping. In this case, however, the holding member is moved in accordance with the dimensional variation in the tank body. Can not be made. Therefore, due to dimensional variations and the like, there is a shift in the arrangement position of the holding member and the support mechanism with respect to the tank body, and there is a possibility that the sealing performance (adhesiveness) of the stopper lid with respect to the tank body and the drainage capacity may be reduced. .

  In contrast, the holding member (cylindrical portion) is screwed into the pipe, and the holding member and the support mechanism are attached to the pipe in advance, and the drain port member is integrated with the holding member when the drain port member is attached. The technology to simultaneously connect the pipe to the tank body and place the holding member and the support mechanism at the normal positions by screwing the integrated drain port member and holding member into the pipe It has been proposed (see, for example, Patent Document 3).

Japanese Patent Laid-Open No. 9-60073 JP 2003-82731 A JP 2000-328624 A

  However, according to the technique, the movement of the holding member after screwing of the drain port member is not necessary, but when performing maintenance such as failure handling, it is necessary to remove the holding member and the support mechanism, The holding member or the like cannot be removed unless the drain port member is removed. Therefore, it is inferior to maintainability.

  The present invention has been made in view of the above circumstances, and its purpose is to make it possible to dramatically improve the mounting workability by making the support mechanism attachable to the pipe in advance, and the like. An object of the present invention is to provide a drain plug device capable of improving the maintainability by making it possible to remove the attachment member that holds the support mechanism without removing the drain port member.

  In the following, each means suitable for solving the above-described object will be described in terms of items. In addition, the effect specific to the means to respond | corresponds as needed is added.

Means 1. A drain plug device attached to the drain of the tank body and connected to a predetermined pipe,
A first male screw portion that is inserted into the drainage port and can be screwed into a female screw portion formed on the inner periphery of the pipe is provided on the outer periphery, and the first male screw portion is screwed into the female screw portion, A cylindrical drainage port member connecting the pipe to the tank body by sandwiching the tank body with the pipe,
An annular ring member that has a second male screw portion that can be screwed to the female screw portion on the outer periphery, and is disposed coaxially with the drain port member below the drain port member;
A support shaft to which a plug lid provided at the drain outlet is attached, and a support mechanism for supporting the plug lid so as to be movable up and down;
A holding portion that directly or indirectly holds the support shaft, and an attachment member that has an arm portion that extends from the holding portion toward the outside and is attached to the ring member,
On the lower side of the drain port member, a locking portion that can be locked to the locked portion provided on the upper side of the ring member is provided,
In a state where the locking portion is locked to the locked portion, the relative rotation of the ring member with respect to the drain port member is restricted,
The screw pitch of the first male screw portion and the screw pitch of the second male screw portion are equalized, the locking portion is locked to the locked portion, and the upper surface portion of the ring member is In a state where the lower surface portion of the drain port member is in contact, the screw thread of the second male screw part is continuous with the screw thread of the first male screw part,
The drain plug device according to claim 1, wherein the attachment member is attachable / detachable to / from the ring member from above the drain port member.

  Note that “the screw thread of the second male screw part is continuous with the screw thread of the first male screw part” means that the screw thread of the first male screw part and the screw thread of the second male screw part. Including a case where there is a slight gap between both screw threads.

  Moreover, it is good also as providing the support shaft which supports a stopper lid in the inside of the holding part of an attachment member, and comprising a support mechanism with a holding part and a support shaft. That is, the support mechanism and the attachment member may be integrated.

  According to the above-mentioned means 1, the ring mechanism to which the attachment member that holds the support mechanism (or the support mechanism is integrated) is attached in advance to the pipe so that the support mechanism is attached to the pipe. Can be attached in advance. For this reason, the troublesome work of pulling out the support mechanism and the like from the inside of the pipe is not required, and it is possible to improve the mounting workability and prevent the member from being damaged when the support mechanism is pulled out.

  Further, according to the means 1, the screw pitch of the first male screw portion and the screw pitch of the second male screw portion are equalized, the locking portion is locked to the locked portion, and the ring member In a state in which the lower surface portion of the drain port member is in contact with the upper surface portion, the screw thread of the second male screw portion is continuous with the screw thread of the first male screw portion. Therefore, the ring member is placed in front of the final arrangement position with respect to the pipe (more specifically, the lower surface portion of the drain port member is brought into contact with the upper surface portion of the ring member without screwing the drain port member into the pipe. In a state where it is screwed into a possible position), the locking portion is locked to the locked portion and the relative rotation of the ring member with respect to the drain port member is restricted, and then the drain port member is rotated relative to the pipe. By doing so, the ring member can be screwed into the pipe together with the drain port member. When the drain port member is provided at the final arrangement position (when the pipe is connected to the tank body), the ring member is provided at an appropriate arrangement position with respect to the lower surface portion of the drain port member, and as a result The opening amount (stroke amount) of the lid is stabilized.

  For example, in the case of a configuration in which the drain lid is closed by the stopper lid being in close contact with the tank body, the drain port member contacts the surface of the tank body when sandwiching the tank body with the pipe, but the surface of the tank body Is usually formed more accurately than the back surface. Therefore, in the same kind of tank body, there is very little variation in the distance from the sealing position by the stopper lid to the surface that the drain port member contacts. Therefore, when the drain port member is provided at the final arrangement position, the drain port member is provided at a fixed position with respect to the sealing position by the plug lid, and as a result, a ring member that contacts the lower surface portion of the drain port member, and The arrangement position of the support mechanism attached to this is also provided at a fixed position with respect to the seal position. As a result, the opening amount (stroke amount) of the plug lid can be stabilized.

  In addition, in the case of a configuration in which the plug lid is in close contact with the drain port member and the drain port is closed as described above, the ring member is in contact with the lower surface portion of the drain port member. The relative arrangement position does not change, and as a result, the support mechanism and the plug lid are arranged at a fixed position with respect to the drain port member. Therefore, the opening amount (stroke) of the plug lid is stabilized. Thus, according to the means 1, when the drain port member is provided at the final arrangement position, the ring member is provided at an appropriate arrangement position. Therefore, it is not necessary to move the ring member after the drain port member is attached, and the attachment workability can be further improved.

  In addition, according to the means 1, the attachment member can be attached to and detached from the ring member from above the drain port member. Therefore, by removing the attachment member from the ring member, it is possible to easily remove the attachment member and the support mechanism without removing the drain port member from the pipe. As a result, maintenance can be improved.

  Mean 2. The height of the locking margin of the locking portion relative to the locked portion along the central axis direction of the drain port member is smaller than the screw pitch of the first male screw portion. The drain plug device according to means 1.

  Even when the upper surface of the ring member is separated from the lower surface of the drain port member by the thread pitch of the first male screw portion when the drain port member or the ring member is screwed to the pipe, the drain port member and the ring member are It is possible to screw onto the pipe at the same time. However, when the drain port member or the like is screwed in such a state, the ring member is disposed below the predetermined position by the screw pitch, and the ring member and thus the position of the support mechanism in the vertical direction is arranged. May deviate from the normal position.

  In this respect, according to the means 2, the height of the locking margin of the locking portion with respect to the locked portion is made smaller than the screw pitch of the first male screw portion. That is, if the locking part is locked with respect to the locked part, the gap between the drain port member and the ring member is not generated more than the screw pitch. Here, although there is a gap between the drain port member and the ring member, when the size of the gap is smaller than the screw pitch, the drain port member and the ring member can be screwed together with the pipe at the same time. Can not. Therefore, in the said means 2, if a latching part is latched with respect to a to-be-latched part, and if the drain port member and the ring member could be screwed together with piping simultaneously, a ring member will be own. It will be screwed together with piping in the state which the upper surface part has contacted the lower surface part of the drain port member. Therefore, according to the said means 2, the situation where a ring member will be arrange | positioned below only a screw pitch rather than a predetermined position can be prevented more reliably. As a result, the ring member and thus the support mechanism can be more reliably arranged with respect to a predetermined position.

  Means 3. At least one of the drain port member and the ring member regulates relative movement along the vertical direction of the ring member with respect to the drain port member in a state where the locking portion is locked to the locked portion. The drain plug device according to means 1 or 2, further comprising movement restriction means.

  According to the means 3, in the state where the locking portion is locked to the locked portion, even if an upward force is applied toward the drain port member, the drain port member cannot be detached from the ring member. Therefore, when the drain port member and the ring member are screwed to the pipe, the drain port member is not accidentally detached from the ring member, and the mounting workability can be further improved.

Means 4. A drain plug device attached to the drain of the tank body and connected to a predetermined pipe,
The external thread has a male screw part that is inserted into the drainage port and can be screwed into a female screw part formed on the inner periphery of the pipe, and the male screw part is screwed into the female screw part. By sandwiching the tank body with, a cylindrical drainage port member connecting the pipe to the tank body,
The upper surface portion of the drainage member contacts the lower surface portion of the drainage port member, and is disposed coaxially with the drainage port member, and is held in a relatively movable state along the central axis direction of the piping in the piping. An annular ring member;
A support shaft to which a plug lid provided at the drain outlet is attached, and a support mechanism for supporting the plug lid so as to be movable up and down;
A holding portion that directly or indirectly holds the support shaft, and an attachment member that has an arm portion that extends from the holding portion toward the outside and is attached to the ring member,
Below the ring member is provided an elastic member that urges the ring member toward the drain port member side,
The drain plug device according to claim 1, wherein the attachment member is attachable / detachable to / from the ring member from above the drain port member.

  The elastic member may be provided separately from the ring member or may be provided integrally with the ring member.

  According to the above means 4, the ring member to which the attachment member for holding the support mechanism (or integrated with the support mechanism) is attached can be attached in advance to the pipe. This eliminates the troublesome work of pulling out and improves the mounting workability.

  Moreover, according to the said means 4, a drain port member can be screwed together with piping, pushing a ring member to a downward side with a drain port member. Then, due to the urging force from the elastic member, the upper surface portion of the ring member comes into contact with the lower surface portion of the drain port member, and when the drain port member is provided at the final arrangement position (when the pipe is connected to the tank body). The ring member is provided at an appropriate arrangement position based on the lower surface portion of the drain port member. Therefore, it is not necessary to move the ring member to an appropriate arrangement position after the drain port member is attached, and the attachment workability can be further improved.

  In addition, according to the means 4, the attachment member can be attached to and detached from the ring member from above the drain port member. Therefore, by removing the attachment member from the ring member, it is possible to easily remove the attachment member and the support mechanism without removing the drain port member from the pipe. As a result, maintainability can be improved.

  In order to enable the drain port member and the ring member to be screwed to the pipe simultaneously as in the above means 1, the drainage member is drained when the upper surface portion of the ring member is brought into contact with the lower surface portion of the drain port member. It is necessary to align and assemble the second male screw portion of the ring member so that the second male screw portion of the ring member has a continuous spiral shape. However, in order to satisfy this configuration, for example, the second threaded portion is formed after aligning the position of the locked portion with the threaded portion at a certain position with respect to the locked portion. It is necessary to form the second male screw portion so as to be positioned, and there is a possibility that difficulty in manufacturing the ring member may occur. Further, when a plurality of locking portions and locked portions are provided, it is necessary to select a locked portion to which the locking portions are locked so that both screw portions have a continuous spiral shape.

  In this regard, according to the above means 4, it is not necessary to provide a male thread portion for screwing with respect to the pipe on the outer periphery of the ring member. Therefore, a ring member can be manufactured easily and productivity can be improved. Further, when the drain port member is screwed, it is not necessary to lock the locking portion with respect to the locked portion, and as a result, the locking portion is locked so that both male screw portions have a continuous spiral shape. The troublesome work of selecting the locked portion to be performed cannot occur. Therefore, the mounting workability can be further improved.

  Means 5. The drain plug device according to claim 4, further comprising movement range defining means for defining a relative movable range in the vertical direction of the ring member in the pipe.

  According to the means 5, the movement range defining means causes the ring member to be removed from the upper opening of the pipe, or the ring member is excessively disposed on the upper side by the biasing force from the elastic member. Will not occur. Therefore, it becomes easy to handle the drain plug device at the time of mounting on the tank body, and the mounting workability can be further improved.

  The “movement range defining means” is, for example, provided in a pipe (or ring member) by a groove extending in the vertical direction, and a protrusion provided in the groove and provided in the ring member (or pipe). Can be configured.

Means 6. A drain plug device attached to the drain of the tank body and connected to a predetermined pipe,
The external thread has a male screw part that is inserted into the drainage port and can be screwed into a female screw part formed on the inner periphery of the pipe, and the male screw part is screwed into the female screw part. By sandwiching the tank body with, a cylindrical drainage port member connecting the pipe to the tank body,
An annular ring member disposed on the same axis as the drain port member, with its upper surface portion contacting the lower surface portion of the drain port member;
A support shaft to which a plug lid provided at the drain outlet is attached, and a support mechanism for supporting the plug lid so as to be movable up and down;
A holding portion that directly or indirectly holds the support shaft, and an attachment member that has an arm portion that extends from the holding portion toward the outside and is attached to the ring member,
The ring member is configured to be attachable to the drain port member in a state where its upper surface portion is in contact with the lower surface portion of the drain port member,
The drain plug device according to claim 1, wherein the attachment member is attachable / detachable to / from the ring member from above the drain port member.

  According to the means 6, as in the means 1 and 4, the ring member to which the attachment member for holding the support mechanism (or integrated with the support mechanism) is attached may be previously attached to the pipe. Therefore, the troublesome work of pulling out the support mechanism and the like from the inside of the pipe becomes unnecessary, and the mounting workability can be improved. Further, by removing the attachment member from the ring member, the attachment member and the support mechanism can be easily removed without removing the drain port member from the pipe, and the maintainability can be improved.

  Further, according to the means 6, the ring member is attached to the drain port member so that the upper surface portion thereof contacts the lower surface portion of the drain port member, and the drain port member is screwed to the pipe. Can do. When the drain port member is screwed into the pipe, the ring member attached to the drain port member enters the pipe and the drain port member is provided at the final arrangement position. A member will be provided in the suitable arrangement position on the basis of the lower surface part of a drain outlet member. Therefore, it is not necessary to move the ring member to an appropriate arrangement position after the drain port member is attached, and the attachment workability can be further improved.

  Further, similarly to the above means 4, since it is not necessary to provide a male screw portion on the outer periphery of the ring member, the ring member can be easily manufactured, and productivity can be improved. Further, when the drain port member is screwed, it becomes unnecessary to lock the locking portion with respect to the locked portion, and the locking portion is locked so that the male screw portion becomes a continuous spiral shape. The troublesome work of selecting the locked portion cannot occur. Therefore, the mounting workability can be further improved.

Mean 7 The inner periphery of the drain port member is provided with a plurality of convex portions projecting radially inward,
While the arm portion is provided intermittently along the circumferential direction of the holding portion ,
The distal end portion of the arm portion is provided with a curved portion that forms a curved shape along the inner peripheral surface of the drain port member,
In a state where the lower surface portion of the drain port member is in contact with the upper surface portion of the ring member to which the attachment member is attached, at least a part of the arm portion is located on the inner peripheral side of the drain port member, The drain plug device according to any one of means 1 to 6 , wherein the convex portion is disposed between the curved portions, and the curved portion substantially contacts the convex portion.

  Note that “the curved portion substantially contacts the convex portion” is not only when the convex portion is in contact with the curved portion without any gap, but also between the curved portion and the convex portion. This includes the case where a slight gap is formed.

  According to the above means 7, a plurality of convex portions are provided on the inner periphery of the drain port member, and when the drain port member is screwed into the pipe, a mounting tool is hooked on the convex portion. be able to. Therefore, the drain port member can be screwed into the pipe more easily, and the mounting workability can be further improved.

  By the way, in the attachment member, in order to prevent breakage of the arm portion or the like, it is preferable to provide an annular portion for connecting the tip portions of the arm portion to improve the strength of the arm portion. However, when the annular portion is located on the inner peripheral side of the drain port member, if the convex portion is formed on the inner periphery of the drain port member, it is necessary to reduce the inner diameter of the annular portion by the amount of the convex portion. End up. If the inner diameter of the annular portion is reduced, the water flow area of the drainage channel formed inside the annular portion is reduced, which may lead to a decrease in drainage capacity.

  In view of this point, according to the means 7, the convex portion is disposed between the curved portions positioned at the distal ends of the arm portions, and the curved portion is configured to substantially contact the convex portion. . That is, the curved portion and the convex portion are configured to be continuous in an annular shape. Therefore, similarly to the case where the above-described annular portion is provided, the strength of the arm portion can be improved, and breakage of the arm portion can be prevented. Further, since the bending portion is arranged at a position shifted from the convex portion in the circumferential direction, the inner diameter of the bending portion (the diameter from the outer peripheral surface of the holding portion to the inner peripheral surface of the bending portion is not disturbed). The distance along the direction) can be increased as much as possible. Therefore, the water flow area of the drainage channel formed inside the curved portion can be made sufficiently large, and an excellent drainage capacity can be realized.

  Means 8. The drain plug device according to claim 7, wherein the convex portion projects upward from the upper surface portion of the drain port member.

  According to the said means 8, while the convex part provided in the drain outlet member protrudes toward radial inside, it is comprised so that it may protrude from the upper surface part of a drain outlet member upward. Therefore, the attachment tool can be more reliably locked to the convex portion, and the drainage port member can be screwed into the pipe more reliably and more easily.

  Means 9. The inner surface of the curved portion and the inner surface of the convex portion are flush with each other when the lower surface portion of the drain port member is in contact with the upper surface portion of the ring member to which the attachment member is attached. The drain plug device according to the means 7 or 8.

  In addition, there is a slight level difference from the inner surface of the curved portion to the inner surface of the convex portion as well as the case where the inner surface of the curved portion and the inner surface of the convex portion are strictly flush with each other. Including cases.

  According to the said means 9, in the state which made the upper surface part of the ring member contact the lower surface part of a drain outlet member, it is comprised so that the inner surface of a curved part and the inner surface of a convex part may become flush | level. Therefore, the appearance quality can be improved, the water flow area can be further increased, and the drainage capacity can be further enhanced.

It is sectional drawing which shows structures, such as a drain plug device. It is a perspective view which shows the structure of a drain outlet member. It is a perspective view which shows the structure of a ring member. It is a perspective view, such as a drain outlet member, for explaining the locking margin of the locking part to the locked part. It is a perspective view which shows the structure of an attachment member. It is a top view which shows the positional relationship of a drain port member and an attachment member. It is sectional drawing, such as a ring member for demonstrating one process of the attachment process of the drain plug apparatus with respect to a bathtub. It is sectional drawing, such as a ring member for demonstrating one process of the attachment process of the drain plug apparatus with respect to a bathtub. It is sectional drawing, such as a ring member for demonstrating one process of the attachment process of the drain plug apparatus with respect to a bathtub. It is sectional drawing of an attachment member etc. for demonstrating removal of an attachment member or a support mechanism. It is sectional drawing which shows the structure of the drain plug apparatus etc. in another embodiment. It is an expanded sectional view which shows the structure of the ring member and elastic member in another embodiment. It is an expanded sectional view which shows the structure of the movement range prescription | regulation means in another embodiment. It is a perspective view of the drain port member etc. which show the composition of the movement control means in another embodiment.

Hereinafter, embodiments will be described with reference to the drawings.
[First Embodiment]
As shown in FIG. 1, the drain plug device 1 is attached to a drain port 101 of a bathtub 100 as a tank body, and includes a drain port member 2, a ring member 3, an attachment member 4, a support mechanism 5, A stopper lid 6 is provided.

  The drain port member 2 is formed in a cylindrical shape from a predetermined resin (for example, POM), and is inserted into the drain port 101 so that the central axis of the drain port 101 substantially coincides with its own central axis. ing. In addition, an annular projecting portion 21 is formed on the upper end side of the drain port member 2 so as to protrude to the outer peripheral side, and a first male screw portion is formed on the outer peripheral surface on the lower end side of the projecting portion 21. 22 is formed. The drain port member 2 has its own overhanging portion 21 placed on the flange portion 101A that bulges radially inward from the lower end of the drain port 101, and then has its own first male screw portion. 22 is screwed into a female screw portion 102A formed on the inner periphery of the drainage pipe 102. As a result, the bathtub 100 is sandwiched between the drain port member 2 and the pipe 102, and as a result, the pipe 102 is connected to the drain port 101, and as a result, a drain channel leading from the drain port 101 to the pipe 102 is formed. Has been. In the present embodiment, the pipe 102 is connected to the drain port 101 with an annular seal member 7 made of an elastic material such as EPDM rubber interposed between the flange 101A and the pipe 102, for example. It is connected.

  Further, as shown in FIG. 2, the drain port member 2 includes projecting convex portions 23 that project radially inward and upward from the inner peripheral surface to the upper surface portion. The convex portion 23 is a portion to which a mounting tool is locked when the drain port member 2 is screwed into the pipe 102, and a plurality of the convex portions 23 are arranged at equal intervals along the circumferential direction of the drain port member 2 (this embodiment). Then, four) are provided.

  In addition, a locking portion 24 that protrudes downward is provided on the lower surface portion of the drain port member 2. A plurality of (for example, four) locking portions 24 are provided at equal intervals along the circumferential direction of the drain port member 2. In the present embodiment, at least one of the locking portions 24 has a width along the circumferential direction different from the width of the other locking portions 24.

  Returning to FIG. 1, the ring member 3 is formed in a ring shape from a predetermined resin (for example, POM), and has a second male screw portion 31 that can be screwed into the female screw portion 102 </ b> A of the pipe 102 on the outer periphery. ing. In addition, the ring member 3 has its second male screw portion 31 screwed into the female screw portion 102A below the drain port member 2 in a state where its upper surface portion is in contact with the lower surface portion of the drain port member 2. Yes. Since the second male screw portion 31 of the ring member 3 and the first male screw portion 22 of the drain port member 2 are both screwed into the female screw portion 102A, the center axis of the ring member 3 and the center axis of the drain port member 2 (That is, the ring member 3 and the drain port member 2 are arranged on the same axis). Further, in the present embodiment, the screw pitch of the second male screw portion 31 is made equal to the screw pitch of the first male screw portion 22.

  Further, as shown in FIG. 3, the upper surface portion of the ring member 3 has a concave shape, and the same number of locked portions 32 as the locking portions 24 are provided at equal intervals along the circumferential direction of the ring member 3. ing. The locked portion 32 is a portion where the locking portion 24 of the drain port member 2 is locked, and the width of each locked portion 32 along the circumferential direction is locked to the locked portion. The width is equal to 24. Further, as described above, since the width of at least one locking portion 24 is different from the width of the other locking portions 24, each locking portion 24 is locked to the locked portion 32. In addition, the ring member 3 is not combined with the drain port member 2 in a state of being shifted from the predetermined position in the circumferential direction, and the arrangement position of the ring member 3 with respect to the drain port member 2 is uniquely determined. . And in this embodiment, in the state which the latching | locking part 24 was latched by the to-be-latched part 32, and the lower surface part of the drain port member 2 was made to contact the upper surface part of the ring member 3, said 1st male thread part The second male threaded portion 31 is configured to have a continuous spiral with respect to 22 threaded threads. Accordingly, the drainage port member 2 is relative to the pipe 102 in a state where the latching portion 24 is latched to the latched portion 32 and the lower surface portion of the drainage port member 2 is in contact with the upper surface portion of the ring member 3. By rotating, the ring member 3 together with the drain port member 2 can be screwed to the pipe 102 at the same time.

  In addition, in this embodiment, as shown in FIG. 4, the height X of the locking allowance of the locking portion 24 with respect to the locked portion 32 along the central axis direction (vertical direction) of the drain port member 2 is The screw pitch of the first male screw portion 22 is smaller. That is, if the locking portion 24 is locked with respect to the locked portion 32, a gap larger than the screw pitch is not generated between the drain port member 2 and the ring member 3. ing.

  Returning to FIG. 3, in the inner periphery of the ring member 3, the drain port member 2 and the ring member 3 are combined in the circumferential direction of the ring member 3 at a position shifted in the circumferential direction from the convex portion 23. A plurality of step portions 33 are provided at equal intervals along. Moreover, the part located between the level | step-difference parts 33 among the ring members 3 becomes the thick part 34 which protruded slightly toward the radial inside rather than the internal peripheral surface of the site | part in which the level | step-difference part 33 was formed. .

  The attachment member 4 is formed of a predetermined resin (for example, POM) and is attached to the ring member 3 on the inner peripheral side of the drain port member 2 and the ring member 3, as shown in FIG. A holding part 41 and an arm part 42 are provided.

  The holding part 41 has a cylindrical shape and holds the support mechanism 5 on its inner circumference. Specifically, the holding portion 41 includes an upper protruding portion 41A that protrudes radially inward on the upper end side of the inner peripheral surface thereof, and a lower protrusion that protrudes radially inward on the lower end side of the inner peripheral surface thereof. A portion 41B (see FIG. 1) is provided. And the holding part 41 hold | maintains the support mechanism 5 by pinching the support mechanism 5 by both protrusion part 41A, 41B. In the present embodiment, the holding portion 41 is provided with a slit 41C extending along the central axis direction. The slit 41C allows the rear end side opening of the holding portion 41 to be easily opened when the support mechanism 5 is inserted into the holding portion 41 from the rear end side opening.

  The arm portion 42 extends radially outward from a portion located between the slits 41 </ b> C in the holding portion 41, and a plurality (four in this embodiment) are provided at equal intervals along the circumferential direction. The arm portion 42 includes a connecting portion 43 having a plate shape extending along the central axis direction of the holding portion 41, and a curved bending portion 44 provided at the distal end portion of the connecting portion 43.

  The connecting portion 43 is formed from the middle of the holding portion 41 to the lower end of the holding portion 41 along the central axis direction of the holding portion 41, and when the attachment member 4 is arranged on the inner periphery of the drain port member 2, The outermost peripheral portion is substantially in contact with the inner peripheral surface of the drain port member 2. Therefore, when the attachment member 4 is arranged on the inner periphery of the drain port member 2, the presence of the connecting portion 43 prevents the slit 41C from being widened. As a result, the support mechanism 5 can be prevented from coming off from the holding portion 41. It is like that.

  The curved portion 44 has a curved shape along the inner peripheral surface of the drain port member 2, and the thickness along the radial direction is substantially the same as the protruding amount toward the radially inner side of the convex portion 23 of the drain port member 2. Are equal. Further, the bending portion 44 includes a claw portion 44A that protrudes radially outward on the lower side, and includes a wider portion 44B that is wider than the lower side on the upper side. The attachment member 4 has the claw portion 44A locked to the stepped portion 33 of the ring member 3, and the wide portion 44B is placed on the thick portion 34 of the ring member 3. The claw portion 44A and the wide portion 44B It is attached to the ring member 3 by sandwiching the ring member 3. Moreover, the surface latched by the level | step-difference part 33 among nail | claw parts 44A becomes a shape which inclines gradually below as it goes to radial direction outer side, and the lower end side outer peripheral surface of the curved part 44 is radial direction. The shape is gradually inclined upward as it goes outward.

  Here, when attaching the attachment member 4 to the ring member 3, the attachment member 4 is made to approach the ring member 3 from the upper side thereof, and the lower end side outer peripheral surface (inclined surface) of the curved portion 44 is set to the ring member 3. The claw portion 44B is elastically deformed radially inward by being brought into contact with the inner peripheral surface. In this state, the attachment member 4 is further inserted into the ring member 3, and when the claw portion 44A reaches the stepped portion 33, the claw portion 44A is elastically restored, and the claw portion 44A is locked to the stepped portion 33. The attachment member 4 is attached to the ring member 3. On the other hand, when the attachment member 4 is removed from the ring member 3, the surface of the claw portion 44 </ b> A that is locked to the stepped portion 33 is an inclined surface, so that it faces upward with respect to the attachment member 4. As a result, the claw portion 44A is elastically deformed radially inward (that is, the locking force of the claw portion 44A with respect to the step portion 33 is released), and the attachment member 4 is removed from the ring member 3. The That is, according to the present embodiment, the attachment member 4 (arm portion 42) can be easily attached to and detached from the ring member 3.

  Further, in a state where the lower surface portion of the drain port member 2 is brought into contact with the upper surface portion of the ring member 3 to which the attachment member 4 is attached, the convex portion 23 is interposed between the curved portions 44 (wide portions 44B). Is arranged, and the side surface of the curved portion 44 is configured to substantially contact the side surface of the convex portion 23. That is, as shown in FIG. 6 (the stopper lid 6 is not shown in FIG. 6), the bending portion 44 and the convex portion 23 are configured to be connected in an annular shape. Further, as described above, since the thickness of the curved portion 44 and the protruding amount toward the radially inner side of the convex portion 23 are substantially equal, the inner surface of the curved portion 44 and the inner surface of the convex portion 23 are flush with each other. It has become.

  Returning to FIG. 1, the support mechanism 5 moves the support shaft 51 by displacing an operation portion (not shown) configured by a support shaft 51 that can move in the vertical direction relative to the holding portion 41 and a push button. A transmission unit 52 (for example, a metal wire). The support shaft 51 is fitted into a cylindrical portion formed on the back surface of the plug lid 6 at the tip, and the plug lid 6 is supported by the support shaft 51 so as to be movable up and down. The transmission part 52 is configured to be movable in a cylindrical tube 53 provided on the outer periphery thereof, and moves in the tube 53 by the displacement of the operation part. In the present embodiment, with the operation of the operation unit, the support shaft 51 is locked at the rising end and the support shaft 51 is lowered when the lock is released via the transmission unit 52. That is, every time the operation unit is operated, the stopper lid 6 is alternately raised and lowered (opening / closing the drain port 101).

  The plug lid 6 includes a lid portion 61 made of a resin such as POM and an annular packing 62 made of an elastically deformable material (for example, resin or EPDM rubber). The lid portion 61 includes an umbrella-shaped portion 61A whose surface is gently curved, and a cylindrical protruding portion 61B extending downward from the inner side of the back surface of the umbrella-shaped portion 61A. The packing 62 is fitted in a recess provided on the outer periphery. In addition, the packing 62 is configured to be gradually thinner toward the outer peripheral side, and when the drain port 101 is closed, the entire outer periphery of the packing 62 comes into contact with the bathtub 100. .

  Subsequently, the arrangement | positioning procedure with respect to the bathtub 100 of the drain plug apparatus 1 mentioned above is demonstrated.

  As shown in FIG. 7, first, at least the upper portion (the portion where the locked portion 32 is formed) is positioned above the upper end side opening of the pipe 102 (that is, the drain port member 2 is connected to the pipe). The ring member 3 is screwed to the pipe 102 and supported by the holding portion 41 (with the lower surface portion of the drain port member 2 being brought into contact with the upper surface portion of the ring member 3 without being screwed to 102). The attachment member 4 in which the mechanism 5 is inserted is attached to the ring member 3 in advance. In addition, attachment of the ring member 3, the support mechanism 5, etc. with respect to the piping 102 can be performed in places other than the installation place of the bathtub 100, such as a factory, for example.

  Next, as shown in FIG. 8, the pipe 102 to which the ring member 3, the attachment member 4, and the like are attached is brought into contact with the bathtub 100 via the seal member 7 on the back side of the drain port 101. Then, the drain port member 2 is placed on the ring member 3, the locking portion 24 is locked to the locked portion 32, and the lower surface portion of the drain port member 2 is brought into contact with the upper surface portion of the ring member 3. Next, after a predetermined mounting jig (not shown) is locked to the convex portion 23 of the drain port member 2, the bathtub 100 is provided between the protruding portion 21 of the drain port member 2 and the pipe 102. The drain port member 2 is screwed into the pipe 102 from the surface side of the bathtub 100 until the flange portion 102A is sandwiched. Thereby, the drain port member 2 and the ring member 3 are simultaneously screwed into the pipe 102. As described above, the height X of the locking allowance of the locking portion 24 with respect to the locked portion 32 is made smaller than the screw pitch of the first male screw portion 22, so that the lower surface portion of the drain port member 2 is The drain port member 2 and the ring member 3 cannot be screwed to the pipe 102 at the same time while locking the locking portion 24 to the locked portion 32 unless the upper surface portion of the ring member 3 is in contact. . That is, the fact that the drain port member 2 and the ring member 3 can be simultaneously screwed into the pipe 102 while locking the locking portion 24 to the locked portion 32 means that the ring member 3 is connected to the lower surface portion of the drain port member 2. The upper surface part of is in contact. Therefore, the ring member 3 screwed into the pipe 102 is provided at an appropriate arrangement position with respect to the lower surface portion of the drain port member 2, and as a result, the attachment member 4 attached to the ring member 3 and the attachment member 4 The support mechanism 5 held in the position is also provided at an appropriate arrangement position.

  After mounting the drain port member 2 and the like, as shown in FIG. 9, the stopper lid 6 is fixed to the distal end portion of the support mechanism 5, whereby the arrangement of the drain plug device 1 with respect to the bathtub 100 is completed.

  As shown in FIG. 10, even after the drain plug device 1 is attached, the attachment member 4 or the like can be removed without removing the drain port member 2 by pulling out the attachment member 4 from above the drain port member 2. It is possible to remove the support mechanism 5 held in the box.

  As described above in detail, according to the present embodiment, the ring member 3 to which the attachment member 4 that holds the support mechanism 5 is attached is screwed into the pipe 102 in advance, thereby supporting the pipe 102. The mechanism 5 can be attached in advance. For this reason, the troublesome work of pulling out the support mechanism 5 from the inside of the pipe 102 becomes unnecessary, and improvement of mounting workability and prevention of breakage of members (for example, the transmission unit 52 and the pipe 102) when the support mechanism 5 is pulled out are achieved. be able to.

  Further, the screw pitch of the first male screw portion 22 and the screw pitch of the second male screw portion 31 are equalized, the locking portion 24 is locked to the locked portion 32, and the upper surface portion of the ring member 3 In the state where the lower surface portion of the drain port member 2 is in contact with the screw port, the screw thread of the second male screw part 31 is continuous with the screw thread of the first male screw part 22. Therefore, in a state where the ring member 3 is screwed to the pipe 102 closer to the front side than the final arrangement position, the locking portion 24 is locked to the locked portion 32 and the ring to the drain port member 2 is locked. By restricting relative rotation of the member 3 and rotating the drain port member 2 relative to the pipe 102, the ring member 3 can be screwed into the pipe together with the drain port member 2. When the drain port member 2 is provided at the final arrangement position, the ring member 3 is provided at an appropriate arrangement position with respect to the lower surface portion of the drain port member 2, and as a result, the opening amount of the plug lid 6 ( Stroke amount) can be stabilized.

  That is, when the drain lid 101 is closed by the stopper lid 6 being in close contact with the bathtub 100 as in the present embodiment, the drain port member 2 has a surface of the bathtub 100 when sandwiching the bathtub 100 with the pipe 102. However, the surface of the bathtub 100 is usually formed with higher accuracy than the back surface or the like. Therefore, in the same kind of bathtub 100, the distance from the sealing position by the plug lid 6 to the surface to which the drain port member 2 contacts is extremely small. Therefore, when the drain port member 2 is provided at the final arrangement position, the drain port member 2 is provided at a fixed position with respect to the sealing position by the plug lid, and as a result, a ring that contacts the lower surface portion of the drain port member 2. The arrangement position of the member 3 and the support mechanism 5 attached thereto is also provided at a fixed position with respect to the seal position. As a result, the opening amount (stroke amount) of the plug lid 6 is stabilized. As described above, according to the present embodiment, when the drain port member 2 is provided at the final arrangement position, the ring member 3 is disposed at an appropriate position. There is no need to move. Therefore, the workability of mounting the drain plug device 1 can be further improved.

  In addition, in this embodiment, the arm portion 42 of the attachment member 4 can be attached to and detached from the ring member 3 from above the drain port member 2. Therefore, by removing the arm portion 42 (attachment member 4) from the ring member 3, the attachment member 4 and thus the support mechanism 5 can be easily removed without removing the drain port member 2 from the pipe 102. As a result, maintenance can be improved.

  In the present embodiment, the height X of the locking margin of the locking portion 24 with respect to the locked portion 32 is made smaller than the screw pitch of the first male screw portion 22. Therefore, the situation where the ring member 3 is disposed below the predetermined position by the screw pitch can be more reliably prevented. As a result, the ring member 3 and thus the support mechanism 5 can be more reliably arranged with respect to a predetermined position.

  Furthermore, a plurality of convex portions 23 are provided on the inner periphery of the drain port member 2, and when the drain port member 2 is screwed into the pipe 102, a mounting tool is hooked on the convex portion 23. be able to. Therefore, the drain port member 2 can be more easily screwed into the pipe 102, and the mounting workability can be further improved.

  In addition, in this embodiment, the convex part 23 is arrange | positioned between the curved parts 44 located in the front-end | tip of the arm part 42, and the curved part 44 and the convex part 23 are comprised so that it may continue in cyclic | annular form. Accordingly, it is possible to improve the strength of the arm portion 42 while sufficiently securing the water passage area of the drainage channel formed inside the curved portion 44.

  In addition, the projecting portion 23 is configured to project radially inward and project upward from the upper surface portion of the drain port member 2. Therefore, the attachment tool can be more reliably locked with respect to the convex portion 23, and the drainage port member 2 can be screwed into the pipe 102 more reliably and easily.

In addition, the inner surface of the curved portion 44 and the inner surface of the convex portion 23 are configured to be flush with each other when the lower surface portion of the drain port member 2 is in contact with the upper surface portion of the ring member 3. Therefore, the appearance quality can be improved, the water flow area can be further increased, and the drainage capacity can be further enhanced.
[Second Embodiment]
Next, the second embodiment will be described focusing on differences from the first embodiment. As shown in FIG. 11, the drain plug device 1 </ b> A according to the second embodiment includes a drain port member 2 and a ring member 3, as in the first embodiment. Although the external thread part 25 which can be screwed together in the internal thread part 102A is provided, unlike the said 1st Embodiment, the outer peripheral surface of the ring member 3 is made into the smooth shape. In the second embodiment, the lower surface portion of the drain port member 2 and the upper surface portion of the ring member 3 are flat (that is, the locking portion 24 and the locked portion 32 are not provided). In addition, an elastic member 8 made of a spring is provided below the ring member 3.

  The elastic member 8 is disposed between a step 102B provided on the inner periphery of the pipe 102 and the ring member 3, and the upper end contacts the lower surface of the ring member 3 and the lower end of the step 102B. In contact. Further, the elastic member 8 urges the ring member 3 toward the drain port member 2 side. As a result, the upper surface portion of the ring member 3 contacts the lower surface portion of the drain port member 2. ing.

  Subsequently, the arrangement | positioning procedure with respect to the bathtub 100 of the drain plug apparatus 1A mentioned above is demonstrated.

  First, in a factory or the like, the ring member 3 and the elastic member 8 are provided in advance in the pipe 102, and the attachment member 4 into which the support mechanism 5 is inserted is attached to the ring member 3 in advance. Next, the pipe 102 to which the ring member 3 and the like are attached is brought into contact with the bathtub 100 via the seal member 7 on the back side of the drain port 101. Then, after a predetermined mounting jig is locked to the convex portion 23 of the drain port member 2, the drain port member 2 is screwed into the pipe 102, and the drain port member 2 is mounted at the final arrangement position. In the state where the drain port member 2 is attached to the final arrangement position, the ring member 3 has its upper surface pressed against the lower surface of the drain port member 2 by the urging force from the elastic member 8. It has become. Therefore, the ring member 3 is provided at an appropriate arrangement position with reference to the lower surface portion of the drain port member 2, and the attachment member 4 and the support mechanism 5 held by the attachment member 4 are also provided at an appropriate arrangement position. It becomes.

  Finally, fixing the stopper lid 6 to the distal end portion of the support mechanism 5 completes the arrangement of the drain plug device 1 </ b> A with respect to the bathtub 100.

  As in the first embodiment, even after the drain plug device 1A is attached, the attachment member 4 can be pulled out from the upper side of the drain port member 2 without removing the drain port member 2. 4 and the support mechanism 5 can be removed.

  As described above, according to the second embodiment, as in the first embodiment, the support mechanism 5 and the like can be attached to the pipe 102 in advance, and the drain port member 2 can be removed without removing the drain port member 2. The attachment member 4 and the like can be removed from above. Therefore, it is possible to improve the mounting workability and the maintainability.

  Further, in the second embodiment, the drain port member 2 can be screwed into the pipe 102 while pushing the ring member 3 downward by the drain port member 2. Then, due to the urging force from the elastic member 8, the upper surface portion of the ring member 3 comes into contact with the lower surface portion of the drain port member 2, and when the drain port member 2 is provided at the final arrangement position, the ring member 3 is It will be provided at an appropriate arrangement position based on the lower surface portion of the drain port member 2. Therefore, it is not necessary to move the ring member 3 to an appropriate arrangement position after the drain port member 2 is attached, and the attachment workability can be further improved.

  In addition, according to the second embodiment, since it is not necessary to provide a male screw portion on the outer periphery of the ring member 3, the ring member 3 can be easily manufactured, and productivity can be improved. Further, when the drain port member 2 is screwed, it is not necessary to lock the locking portion 24 with respect to the locked portion 32, and as a result, the male screw portions 22 and 31 have a continuous spiral shape. The troublesome work of selecting the locked portion 32 to which the locking portion 24 is locked cannot occur. Therefore, the mounting workability can be further improved. In addition, when the widths of the respective locking portions 24 are equal, it is particularly troublesome to select an appropriate locked portion 32. However, as in the first embodiment, When the width is different and the relative position between the two is uniquely determined when the drain member 2 is combined with the ring member 3, the appropriate locked portion 32 can be easily selected, which is very troublesome. It ’s not work.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, the drain cover 101 is configured to close the drain port 101 when the plug lid 6 is in close contact with the bathtub 100, but the drain port 101 is configured so that the plug cover 6 is in close contact with the drain port member 2. You may comprise so that it may close. Even in this case, since the ring member 3 is in contact with the lower surface portion of the drain port member 2, the relative arrangement position of the drain port member 2 and the ring member 3 does not change, and as a result, drainage serving as a sealing surface. The support mechanism 5 and the plug lid 6 are arranged at fixed positions with respect to the mouth member 2. Therefore, the opening amount (stroke) of the plug lid 6 is stabilized.

  (B) In the said embodiment, although the bathtub 100 is illustrated as a tank body, the tank body which can apply the technical idea of this invention is not limited to a bathtub. Therefore, for example, the technical idea of the present invention may be applied to a drain outlet of a unit bath as a tank body, a drain outlet of a bathroom vanity, and a drain outlet of a sink.

  (C) The configuration of the pipe 102 in the above embodiment is an example, and for example, a ring-shaped pipe having an internal thread portion on the inner peripheral surface may be used as the pipe 102.

  (D) In the above embodiment, the drain port member 2 and the ring member 3 are formed of a resin material. However, the drain port member 2 and the like are formed of a metal material (for example, stainless steel) having excellent corrosion resistance. Also good.

  (E) In the above embodiment, the support mechanism 5 is held by the holding portion 41. However, the support shaft 51 is provided inside the holding portion 41, and the support shaft 51 and the holding portion 41 constitute the support mechanism. (That is, the support mechanism and the attachment member may be integrated). Therefore, the holding part 41 may hold the support shaft 51 directly or indirectly.

  (F) In the first embodiment, the locking portion 24 is locked to the locked portion 32, and both the drain port member 2 and the ring member 3 are screwed into the pipe 102. On the other hand, while making the outer peripheral surface of the ring member 3 smooth as in the second embodiment, a claw portion extending downward is provided on the lower surface portion of the drain port member 2, and the ring member 3 The upper surface portion is provided with a hole that can engage the claw portion, and the claw portion is engaged with the hole portion (that is, snap-fit connection), whereby the lower surface portion of the drain port member 2 and the upper surface portion of the ring member 3 are brought into contact with each other. In this state, the drain port member 2 may be attached to the ring member 3. In this case, by screwing the drain port member 2 to the pipe 102, the ring member 3 attached to the drain port member 2 and the ring member 3 attached to the pipe 102 enter the pipe 102. When provided at the arrangement position, the ring member 3 is provided at an appropriate arrangement position based on the lower surface portion of the drain port member. In addition, as a means for attaching the drain port member 2 to the ring member 3, means other than the snap-fit connection (for example, screwing or the like) may be used.

  (G) In the second embodiment, the elastic member 8 is provided separately from the ring member 3, but the ring member and the elastic member may be integrated. Therefore, for example, as shown in FIG. 12, a projection 9 as an elastic member that is placed on the step 102 </ b> B of the pipe 102 and is elastically deformable is provided below the ring member 3, and the drain port member 2 is finally attached. In an attached state at a specific arrangement position, the upper surface portion of the ring member 3 may be pressed against the lower surface portion of the drain port member 2 by the urging force from the protrusion 9. In this case, the number of parts used can be reduced, and the manufacturing cost can be reduced and the mounting workability can be further improved. In addition, it is preferable to provide a plurality of protrusions 9 at equal intervals along the circumferential direction of the ring member 3 from the viewpoint of uniformly applying a biasing force to the entire circumferential direction of the ring member 3.

(H) the contact Itewa to the case where the elastic member 8 as in the second embodiment, as shown in FIG. 13, the moving range regulating means 82 for defining the relative movable range of the ring member 3 in the pipe 102 It is preferable to provide it. The movement range defining means 82 is, for example, provided by an inner periphery of the pipe 102 and a groove 83 extending along the vertical direction, and a protrusion 84 provided in the outer periphery of the ring member 3 and disposed in the groove 83. Can be configured. By providing the movement range defining means 82, the ring member 3 is removed from the upper opening of the pipe 102, or the ring member 3 is excessively disposed on the upper side by the biasing force from the elastic member 8. Things will not happen. Therefore, handling of the drain plug device 1 at the time of attachment to the bathtub 100 becomes easy, and further improvement in attachment workability can be achieved.

  (I) In the first embodiment, the locking portion 24 and the locked portion 32 are configured to have a certain width along the vertical direction. Even when the drain port member 2 is engaged with the pipe 102, the drain port member 2 is removed from the ring member 3 by applying an upward force toward the drain port member 2 before the drain port member 2 is screwed to the pipe 102. It will come off. On the other hand, as shown in FIG. 14, the ring member 3 with respect to the drain port member 2 in a state where the locking portion 24 is locked to the locked portion 32 on at least one of the drain port member 2 and the ring member 3. It is good also as providing the movement control means 85 which controls the relative movement along the up-down direction. In this case, in a state where the locking portion 24 is locked to the locked portion 32, even if an upward force is applied toward the drain port member 2, the drain port member 2 cannot be detached from the ring member 3. Therefore, when the drain port member 2 and the ring member 3 are screwed to the pipe 102, the drain port member 2 is not accidentally detached from the ring member 3, and the mounting workability can be further improved. The movement restricting means 85 can be constituted by, for example, a protrusion 86 that protrudes from the side surface of the locking portion 24 and a recess 87 that is provided on the locked portion 32 and in which the protrusion 86 is disposed. (The recessed part may be provided in the latching | locking part 24, and a protrusion may be provided in the to-be-latched part 32). In order to provide such a movement restricting means 85, a slit extending in the vertical direction is provided in the locking portion 24 so that the locking portion 24 can be easily locked to the locked portion 32. You may comprise so that it can elastically deform easily along the width direction of the stop part 24. FIG.

  DESCRIPTION OF SYMBOLS 1 ... Drain plug apparatus, 2 ... Drain port member, 3 ... Ring member, 4 ... Attachment member, 5 ... Support mechanism, 6 ... Plug cover, 8 ... Elastic member, 22 ... 1st external thread part, 23 ... Convex part, 24 DESCRIPTION OF SYMBOLS ... Locking part, 25 ... Male screw part, 31 ... 2nd male screw part, 32 ... Locked part, 41 ... Holding part, 42 ... Arm part, 44 ... Curved part, 51 ... Support shaft, 82 ... Moving range defining means , 85 ... Movement restriction means, 100 ... Bathtub (tank), 101 ... Drain port, 102 ... Piping, 102A ... Female thread portion.

Claims (9)

A drain plug device attached to the drain of the tank body and connected to a predetermined pipe,
A first male screw portion that is inserted into the drainage port and can be screwed into a female screw portion formed on the inner periphery of the pipe is provided on the outer periphery, and the first male screw portion is screwed into the female screw portion, A cylindrical drainage port member connecting the pipe to the tank body by sandwiching the tank body with the pipe,
An annular ring member that has a second male screw portion that can be screwed to the female screw portion on the outer periphery, and is disposed coaxially with the drain port member below the drain port member;
A support shaft to which a plug lid provided at the drain outlet is attached, and a support mechanism for supporting the plug lid so as to be movable up and down;
A holding portion that directly or indirectly holds the support shaft, and an attachment member that has an arm portion that extends from the holding portion toward the outside and is attached to the ring member,
On the lower side of the drain port member, a locking portion that can be locked to the locked portion provided on the upper side of the ring member is provided,
In a state where the locking portion is locked to the locked portion, the relative rotation of the ring member with respect to the drain port member is restricted,
The screw pitch of the first male screw portion and the screw pitch of the second male screw portion are equalized, the locking portion is locked to the locked portion, and the upper surface portion of the ring member is In a state where the lower surface portion of the drain port member is in contact, the screw thread of the second male screw part is continuous with the screw thread of the first male screw part,
The drain plug device according to claim 1, wherein the attachment member is attachable / detachable to / from the ring member from above the drain port member.   The height of the locking margin of the locking portion relative to the locked portion along the central axis direction of the drain port member is smaller than the screw pitch of the first male screw portion. The drain plug device according to claim 1.   At least one of the drain port member and the ring member regulates relative movement along the vertical direction of the ring member with respect to the drain port member in a state where the locking portion is locked to the locked portion. The drain plug device according to claim 1, further comprising a movement restricting unit. A drain plug device attached to the drain of the tank body and connected to a predetermined pipe,
The external thread has a male screw part that is inserted into the drainage port and can be screwed into a female screw part formed on the inner periphery of the pipe, and the male screw part is screwed into the female screw part. By sandwiching the tank body with, a cylindrical drainage port member connecting the pipe to the tank body,
The upper surface portion of the drainage member contacts the lower surface portion of the drainage port member, and is disposed coaxially with the drainage port member, and is held in a relatively movable state along the central axis direction of the piping in the piping. An annular ring member;
A support shaft to which a plug lid provided at the drain outlet is attached, and a support mechanism for supporting the plug lid so as to be movable up and down;
A holding portion that directly or indirectly holds the support shaft, and an attachment member that has an arm portion that extends from the holding portion toward the outside and is attached to the ring member,
Below the ring member is provided an elastic member that urges the ring member toward the drain port member side,
The drain plug device according to claim 1, wherein the attachment member is attachable / detachable to / from the ring member from above the drain port member.   The drain plug device according to claim 4, further comprising a movement range defining unit that defines a relative movable range of the ring member in the vertical direction in the pipe. A drain plug device attached to the drain of the tank body and connected to a predetermined pipe,
The external thread has a male screw part that is inserted into the drainage port and can be screwed into a female screw part formed on the inner periphery of the pipe, and the male screw part is screwed into the female screw part. By sandwiching the tank body with, a cylindrical drainage port member connecting the pipe to the tank body,
An annular ring member disposed on the same axis as the drain port member, with its upper surface portion contacting the lower surface portion of the drain port member;
A support shaft to which a plug lid provided at the drain outlet is attached, and a support mechanism for supporting the plug lid so as to be movable up and down;
A holding portion that directly or indirectly holds the support shaft, and an attachment member that has an arm portion that extends from the holding portion toward the outside and is attached to the ring member,
The ring member is configured to be attachable to the drain port member in a state where its upper surface portion is in contact with the lower surface portion of the drain port member,
The drain plug device according to claim 1, wherein the attachment member is attachable / detachable to / from the ring member from above the drain port member. The inner periphery of the drain port member is provided with a plurality of convex portions projecting radially inward,
While the arm portion is provided intermittently along the circumferential direction of the holding portion ,
The distal end portion of the arm portion is provided with a curved portion that forms a curved shape along the inner peripheral surface of the drain port member,
In a state where the lower surface portion of the drain port member is in contact with the upper surface portion of the ring member to which the attachment member is attached, at least a part of the arm portion is located on the inner peripheral side of the drain port member, The drain plug device according to any one of claims 1 to 6, wherein the convex portion is disposed between the curved portions, and the curved portion substantially contacts the convex portion.   The drain plug device according to claim 7, wherein the convex portion protrudes upward from the upper surface portion of the drain port member.   The inner surface of the curved portion and the inner surface of the convex portion are flush with each other when the lower surface portion of the drain port member is in contact with the upper surface portion of the ring member to which the attachment member is attached. The drain plug device according to claim 7 or 8.

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