JP2015214813A - Drain plug device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain plug device capable of further surely preventing complication of a device and an increase in manufacturing cost, while improving installation workability.SOLUTION: A drain plug device 1 comprises: a support shaft mechanism 5 having a support shaft 51 for supporting a plug cover 6; a drain port member 2 inserted into a drain port 101; a pipe 3 for installing the outer periphery of the drain port member 2 on the inner periphery of itself; and an attachment member 4 arranged on the inner periphery such as the drain port member 2. The attachment member 4 comprises a holding part 41 for holding the support shaft 51 and an outer ring part 42 positioned on the outer peripheral side of the holding part 41. A step difference part 35 is formed under a part for installing the drain port member 2 among the pipe 3. The drain port member 2 can be installed in the pipe 3 in a state of holding the outer ring part 42 so as not to drop above the step difference part 35 by the pipe 3, and the outer ring part 42 is put in a state of being sandwiched between the drain port member 2 and the step difference part 35 in a state of installing the drain port member 2 in the pipe 3.

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 plug lid that can open and close a drain port of a tank body (for example, a bathtub, a bathroom vanity, etc.), a support shaft mechanism that supports the plug lid so as to move up and down, and the support shaft A release that includes a transmission member (for example, a wire) that is connected to the mechanism and transmits a displacement of an operation member such as a push button to the support shaft mechanism, and an attachment that holds the support shaft mechanism on the inner periphery of the drain outlet What has a member is known. Moreover, in order to connect the piping used as the flow path of drainage to a tank body (drainage port), a cylindrical drainage port member is used. More specifically, after arranging a pipe (for example, an elbow or a ring-shaped pipe body) on the back side of the tank body (drain port), the outer periphery of the drain port member is attached to the inner periphery of the pipe from the front side of the tank body (for example, The male threaded part formed on the outer periphery of the drain port member is screwed into the female threaded part formed on the inner periphery of the pipe), and the pipe is connected to the tank body by sandwiching the tank body between the drain port member and the pipe. Are connected (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 attached to the pipe (the pipe is connected to the tank body), one end side (support shaft mechanism) of the release is drawn from the inside of the pipe to the front side of the tank body, and the support shaft mechanism is used as an attachment member. Install. And while attaching an attachment member to a drain outlet member or a tank, a drain plug device is attached to a tank by attaching a plug lid to a support shaft mechanism. In the case where the support shaft mechanism and the attachment member are integrated, one end side of the transmission member is drawn out from the inside of the pipe, and one end portion of the drawn transmission member is connected to the support shaft mechanism. Then, the attachment member is attached to the drain port member or the tank body.

  However, it is difficult to pull out one end side (support shaft mechanism or transmission member) of the release from the pipe that cannot be reached. Therefore, a lot of labor and time are required, and there is a possibility that a great burden is imposed on the installation worker. Further, when the support shaft mechanism or the like is pulled out, the transmission member may be cut or bent, and there is a risk that the release member or the like may be damaged.

  Therefore, in order to improve attachment workability and prevent damage to the member, the ring member to which the attachment member holding the support shaft mechanism (or the support shaft mechanism is integrated) is attached to the pipe in advance. Thus, a technique has been proposed in which a support shaft mechanism is attached in advance to a pipe, and then a drain port member is attached to the pipe (see, for example, Patent Document 2). According to this technique, the troublesome work of pulling out the support shaft 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 shaft mechanism and the like are pulled out.

Japanese Patent Laid-Open No. 9-60073 JP 2013-253416 A

  However, in the above technique, it is necessary to separately provide a ring member. Therefore, there is a possibility that the apparatus becomes complicated and the manufacturing cost increases.

  The present invention has been made in view of the above circumstances, and a purpose of the present invention is to provide a drain plug device that can more reliably prevent complication of the device and increase in manufacturing cost while improving the mounting workability and the like. Is to provide.

  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 stopper lid provided at the drain of the tank body;
A support shaft mechanism having a support shaft for supporting the stopper lid so as to be movable up and down;
A cylindrical drainage port member inserted through the drainage port;
In a state where the tank body is sandwiched between the drain port member, a cylindrical pipe to which the outer periphery of the drain port member is attached to the inner periphery of its upper end side,
With an attachment member disposed on the inner periphery of at least one of the drain port member and the pipe,
The attachment member is
A holding portion for holding the support shaft on its inner circumference;
A drain plug device located on the outer peripheral side of the holding portion and having an annular outer ring portion fixed to the holding portion;
A stepped portion on which the outer ring portion is placed is formed below a portion where the outer periphery of the drain port member is attached in the inner periphery of the pipe,
In the state where the outer ring portion is held so as not to fall on the stepped portion by the pipe, the outer periphery of the drain port member can be attached to the inner periphery on the upper end side of the pipe,
In the state where the drain port member is attached to the pipe, the outer ring portion is placed on the step portion and is sandwiched between the drain port member and the step portion. Drain plug device.

  In addition, “the state in which the outer ring portion is held on the stepped portion by the pipe so as not to fall” means that the outer ring portion is placed on the stepped portion or the outer ring portion contacts the stepped portion. Although it is not, the part located on the outer periphery of the outer ring part of the pipe just above the step part means the state holding and holding the outer ring part, etc., without using a member other than the pipe, A state in which the outer ring portion is held on the stepped portion so as not to drop.

  According to the means 1, the support member (support shaft mechanism) is held by the attachment member, and the attachment member that holds the support shaft (support shaft mechanism) is held on the stepped portion of the pipe so as not to drop. A drain port member can be attached to the piping. Therefore, when installing the drain plug device, the troublesome work of pulling out the support shaft mechanism and the like from the inside of the pipe becomes unnecessary. As a result, it is possible to improve the mounting workability, and it is possible to prevent the members from being damaged due to the support shaft mechanism and the like being pulled out.

  Furthermore, according to the means 1, the attachment member is configured to be held on the stepped portion so as not to be dropped on the stepped portion by the pipe. Therefore, it is not necessary to separately provide a member such as a ring member in order to realize the above-described operation effect. Therefore, the apparatus can be simplified and the increase in manufacturing cost can be effectively suppressed.

  Mean 2. In the state where the drain port member is attached to the pipe, the attachment member is configured to be attachable / detachable from above the drain port member through the inner periphery of the drain port member. The drain plug device according to claim 1.

  According to the means 2, the attachment member can be attached and detached from above the drain port member through the inner periphery of the drain port member. Therefore, the attachment member and the support shaft (support shaft mechanism) held by the attachment member can be easily removed without removing the drain port member from the pipe. As a result, maintenance can be improved.

  Means 3. The drain plug apparatus according to means 1 or 2, wherein an inner diameter of the innermost peripheral portion of the step portion is smaller than an inner diameter of the drain port member.

  According to the said means 3, the large allowance of the attachment member (outer ring part) with respect to a level | step-difference part can be ensured more reliably. Therefore, even when a large force is applied to the support shaft mechanism and thus the attachment member downward (on the side of the stepped portion), such as when the stopper lid is stepped on, the attachment member can be more reliably prevented from falling off. Can do.

  Furthermore, according to the means 3, the inner diameter of the drain port member is relatively large. Therefore, when the configuration of the means 2 is adopted, attachment / detachment of the attachment member passing through the inner periphery of the drain port member can be performed more easily.

  Means 4. Means 1, further comprising movement restraining means for restraining relative movement of the outer ring part toward the upper end side of the pipe in a state where the outer ring part is held unfallen on the stepped part by the pipe. The drain plug device according to any one of claims 1 to 3.

  As the “movement restraining means”, for example, the pipe has an inner diameter slightly smaller than the outer diameter of the outer ring portion, and the outer ring portion is sandwiched when the outer ring portion is placed on the stepped portion. The part to be held, the convex or concave locked part formed on the inner periphery of the pipe, and the locked part formed on the outer periphery of the outer ring part and when the outer ring part is arranged on the stepped part And a means comprising a concave or convex engaging portion that is locked to the surface.

  According to the said means 4, it can suppress effectively that an attachment member remove | deviates from a piping and drops | omits by a movement suppression means at the time of attachment operation | work. As a result, the drain port member can be more easily attached to the pipe, and the workability of the attachment can be further improved.

Means 5. The drain port member is attached to the pipe by screwing a male thread part formed on the outer periphery of the drain port member with a female thread part formed on the inner periphery on the upper end side of the pipe,
The movement suppression means is
An internal thread-shaped groove formed in a portion between the internal thread portion and the stepped portion of the pipe, and having the same pitch as the internal thread portion;
The drain plug device according to means 4, wherein the drain plug device is configured by a convex portion provided on an outer periphery of the outer ring portion and disposed in the groove portion.

  According to the means 5, the female screw portion and the female screw-like (spiral) groove portion are configured to have the same pitch. Therefore, when the pipe is produced by mold forming, the one inner mold corresponding to the female screw part and the groove part is rotated so as to be removed from the female screw part when the die is removed, so that the first inner mold is removed from the pipe. Can be easily removed. In addition, the inner mold corresponding to the female screw portion and the inner mold corresponding to the groove portion are not separated, and both can be formed by one inner mold. Therefore, the movement suppressing means can be formed by a relatively simple method without increasing the manufacturing cost.

  Means 6. The drain plug device according to means 5, wherein a plurality of the groove portions are provided along the axial direction of the pipe.

  According to the above means 6, since a plurality of groove portions are provided (in multiple lines), the distance between one groove portion and the other groove portions adjacent thereto can be made relatively small. Accordingly, when the drain port member is attached to the pipe, the position along the axial direction of the pipe in the attachment member set to the pipe can be adjusted more finely. For example, the outer ring portion of the attachment member can be more reliably placed on the stepped portion while the convex portion is disposed with respect to the groove portion, and the attachment member can be dropped in a more stable state. Can be held. Thereby, the attachment of the drain port member to the pipe can be performed more easily, and the attachment workability can be further enhanced.

Mean 7 The drain port member is attached to the pipe by screwing a male thread part formed on the outer periphery of the drain port member with a female thread part formed on the inner periphery on the upper end side of the pipe,
The drain lid can be closed by contacting the drain lid member with the stopper lid,
Means 1 to 6 further comprising relative position defining means for making the relative position along the vertical direction of the pipe with respect to the drain port member a fixed position when the drain port member is screwed into the pipe. A drain plug device according to any one of the above.

  As the “relative position defining means”, the drainage port member protrudes to the outer peripheral side above the male screw portion, and protrudes against the pipe when the drainage port member is screwed into the pipe, or a pipe Among them, there may be mentioned a bumping portion that hits the drain port member when the drain port member is screwed together.

  In the state in which the drain port member is screwed to the pipe, if variation occurs in the relative position along the vertical direction of the pipe with respect to the drain port member, the attachment member or attachment member placed on the pipe with respect to the drain port member Variations occur in the relative positions along the vertical direction of the support shaft mechanism to be held and the plug lid attached to the support shaft mechanism. If the drain lid is closed by bringing the lid lid into contact with the drain port member when there is a variation in the relative position along the vertical direction between the plug lid and the drain port member, the plug is closed to close the drain port. Even if the lid is moved downward, the plug lid cannot be brought into sufficient contact with the drain port member, or the plug lid does not come into contact with the drain port member and the plug lid remains floating. There is a fear. That is, if variation occurs in the relative position along the vertical direction between the plug lid and the drain port member, there is a risk that the drain port may be reliably closed.

  In this regard, according to the means 7, when the drain port member is screwed into the pipe by the relative position defining means, the relative position along the vertical direction of the pipe with respect to the drain port member can be set to a constant position. . As a result, the positional relationship along the vertical direction between the attachment member placed on the stepped portion of the pipe and the drain port member can be set to a fixed position. As a result, the support shaft mechanism and the plug lid attached to this and the drainage The positional relationship along the vertical direction with the mouth member can also be a fixed position. Therefore, when closing the drain port, the plug lid can be more reliably brought into contact with the drain port member. As a result, the drain outlet can be reliably closed.

It is sectional drawing which shows the structure of the drain plug apparatus in one Embodiment. It is sectional drawing, such as piping, which shows one process of the attachment process of a drain plug device. It is sectional drawing, such as piping, which shows one process of the attachment process of a drain plug device. It is sectional drawing, such as piping, which shows one process of the attachment process of a drain plug device. It is sectional drawing which shows the drain plug apparatus in the state which removed the attachment member etc. It is sectional drawing of the drain plug device which shows the relative position regulation means in another embodiment. It is sectional drawing, such as piping which shows the movement suppression means in another embodiment. It is sectional drawing, such as piping which shows the movement suppression means in another embodiment. It is sectional drawing, such as piping which shows the movement suppression means in another embodiment. It is a cross-sectional schematic diagram which shows the internal mold etc. which are used when shape | molding piping. It is sectional drawing, such as an attachment member which shows the connection part in another embodiment. (A) is sectional drawing which shows the structure of the level | step-difference part in another embodiment, (b) is a cross-sectional end view which shows the structure of the level | step-difference part in another embodiment. (A) is sectional drawing which shows the structure of a positioning means, (b) is a cross-sectional end view which shows the structure of the level | step-difference part in another embodiment.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1, the drain plug device 1 is provided in a drain port 101 of a bathtub 100 as a tank body, and includes a drain port member 2, a pipe 3, an attachment member 4, a support shaft 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. Further, a flange portion 21 is formed on the upper end side of the drain port member 2 so as to protrude from the outer peripheral side. Further, a male screw portion 22 is formed on the outer peripheral surface of the drain port member 2 on the lower end side of the flange portion 21.

  The pipe 3 is formed in a cylindrical shape from a predetermined resin (for example, ABS or the like), and is configured such that drainage that has passed through the drainage port 101 flows into its own inner peripheral space. Further, a female screw portion 31 capable of screwing the male screw portion 22 is formed on the inner periphery on the upper end side of the pipe 3. Then, the male screw portion 22 is screwed to the female screw portion 31 so that the bathtub 100 is sandwiched between the flange portion 21 and the upper end surface of the pipe 3, and the inner circumference of the pipe 3 (the female screw portion). 31) The outer periphery (male thread part 22) of the drain port member 2 is attached. In the present embodiment, an annular seal member 7 made of an elastic material such as EPDM rubber is disposed between the flange 21 and the bathtub 100, and between the bathtub 100 and the upper end surface of the pipe 3, An annular seal member 8 made of an elastic material is disposed. By providing these sealing members 7 and 8, water leakage prevention from between the drain port member 2 and the pipe 3 and the bathtub 100 is achieved.

  In addition, an intermediate portion 32 having a smaller diameter than the inner diameter of the female screw portion 31 is provided on the inner periphery of the pipe 3 and below the female screw portion 31. In addition, a stepped contact portion 33 (corresponding to “relative position defining means”) is formed between the lower end of the female screw portion 31 and the upper end of the intermediate portion 32. And when the drain port member 2 (male thread portion 22) is screwed to the pipe 3 (female thread portion 31), the tip end surface of the drain port member 2 is configured to contact the abutting portion 33. . Therefore, in a state where the drain port member 2 (male thread portion 22) is screwed to the pipe 3 (internal thread portion 31), the relative position along the vertical direction of the pipe 3 with respect to the drain port member 2 is a constant position. .

  In addition, when the thickness of the bathtub 100 is comparatively small, etc., when the upper end surface of the pipe 3 cannot be brought into pressure contact with the seal member 8 or the like in a state where the front end surface of the drain port member 2 is in contact with the abutting portion 33. May be provided with a spacer (not shown) having a predetermined thickness between the flange 21 and the bathtub 100 or between the upper end surface of the pipe 3 and the bathtub 100. By providing such a spacer, the upper end surface of the pipe 3 can be more reliably brought into pressure contact with the seal member 8 and the like, and the attached state of the drain port member 2 and the pipe 3 to the bathtub 100 is stronger and more stable. It can be a typical one.

  Further, a small-diameter portion 34 whose inner diameter is smaller than the inner diameter of the intermediate portion 32 is provided below the intermediate portion 32 in the inner periphery of the pipe 3. Further, an annular step 35 is provided between the lower end of the intermediate portion 32 and the upper end of the small diameter portion 34 so as to face the upper end opening side of the pipe 3. In a state where the drain port member 2 is attached to the pipe 3, the annular recess 9 centering on the central axis of the pipe 3 is formed by the tip surface of the drain port member 2, the intermediate portion 32, and the stepped portion 35. It is like that.

  Further, the inner diameter D1 (see FIG. 2) of the innermost peripheral portion of the step portion 35 is configured to be smaller than the inner diameter D2 (see FIG. 4) of the drain port member 2. Therefore, in the present embodiment, in the drainage flow path formed by the inner peripheral surface of the drain port member 2 and the inner peripheral surface of the pipe 3, the inner diameter of the portion located above the stepped portion 35 is the stepped portion 35. It is larger than the inner diameter D1 of the innermost peripheral portion. In the present embodiment, the width of the step portion 35 (more specifically, the length along the radial direction of the pipe 3 from the innermost periphery to the outermost periphery of the step portion 35) is along the circumferential direction of the pipe 3. It is constant.

  The attachment member 4 is formed of a predetermined resin (for example, POM or the like), and is disposed on the inner periphery of at least one of the drain port member 2 and the pipe 3 (both in the present embodiment). The attachment member 4 includes a holding part 41 and an outer ring part 42.

  The holding portion 41 has a cylindrical shape and holds the support shaft 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 is provided. And the holding | maintenance part 41 hold | maintains the support shaft mechanism 5 by pinching the support shaft mechanism 5 with both protrusion part 41A, 41B. The holding portion 41 is provided with a slit (not shown). When the support shaft mechanism 5 is inserted into the holding portion 41 from the rear end side opening, the slit is widened to hold the holding portion 41. The rear end side opening of the portion 41 can be easily opened.

  The outer ring portion 42 is positioned on the outer periphery of the holding portion 41 and is configured to form an annular shape coaxial with the holding portion 41. The inner periphery of the outer ring portion 42 is fixed to the outer periphery of the holding portion 41 by a connecting portion (not shown) extending along the radial direction of the holding portion 41. A plurality of (for example, two) connecting portions are provided at equal intervals along the circumferential direction of the leg portion of the holding portion 41 so that drainage flows through the gap between the connecting portions.

  Further, the outer ring portion 42 includes a main body portion 42A and leg portions 42B extending downward from the lower end surface of the main body portion 42A.

  The main body portion 42 </ b> A has a cylindrical shape, and is disposed on the inner periphery of the drain port member 2 such that its outer peripheral surface is along the inner peripheral surface of the drain port member 2.

  Each of the leg portions 42B has a curved surface shape in which the inner peripheral surface and the outer peripheral surface are each along the inner peripheral surface of the pipe 3, and a plurality of leg portions 42B (this embodiment) are arranged at equal intervals along the circumferential direction of the main body portion 42A. Then, 8) are provided. Furthermore, a continuous surface extends from the inner peripheral surface of the main body portion 42A to the inner peripheral surface of the leg portion 42B. The inner diameter of the main body portion 42A and the inner diameter of the leg portion 42B (more specifically, the inner periphery of each leg portion 42B) The inner diameter of the virtual cylinder including the side surface). Further, the inner diameter of the main body portion 42 </ b> A and the inner diameter of the leg portion 42 </ b> B are equal to the inner diameter of the small diameter portion 34 of the pipe 3.

  Furthermore, each leg part 42B is provided with the protrusion part 42C which protrudes outside from the outer peripheral surface of 42 A of main-body parts. Each projecting portion 42C is elastically deformable along the radial direction of the outer ring portion 42 by bending the base portion between the main body portion 42A and the leg portion 42B. Each protrusion 42C is fitted in the recess 9 and the outer ring portion 42 is placed on the stepped portion 35, whereby the attachment member 4 is attached to the drain port member 2 and the pipe 3. . In other words, in the present embodiment, the attachment member 4 is attached to the drain port member 2 or the like with its own protruding portion 42 </ b> C (outer ring portion 42) sandwiched between the drain port member 2 and the pipe 3. .

  Further, as described above, since the inner diameter of the main body portion 42A and the inner diameter of the leg portion 42B are equal to the inner diameter of the small diameter portion 34 of the pipe 3, the attachment member 4 is attached to the drain port member 2 or the like. The inner peripheral surface from 4 to the small-diameter portion 34 has a shape that does not protrude inward. Therefore, it is possible to secure a sufficient water passage area and obtain a good drainage capacity. Moreover, it becomes difficult for dust etc. to adhere to the drain port member 2 and the pipe 3, and hygiene can be improved.

  Further, the outer diameter D3 of the projecting portion 42C (more specifically, the outer diameter of a virtual cylinder including the outer peripheral surface of each projecting portion 42C) is slightly larger than the inner diameter D4 of the intermediate portion 32 of the pipe 3. (See FIG. 2). Therefore, in the state where the outer ring portion 42 is placed on the stepped portion 35, a force directed radially inward is applied from the intermediate portion 32 to the protruding portion 42C.

  Furthermore, in this embodiment, the upper side surface (surface located on the front end surface side of the drain port member 2) of the projecting portion 42C is an inclined surface that is inclined downward toward the outer periphery. For this reason, the attachment member 4 is pulled upward from the surface side of the bathtub 100, and the attachment member 4 is further pulled upward in a state where the upper side surface of the protruding portion 42C is in contact with the distal end surface of the drain port member 2. When raised, the upper side surface of the projecting portion 42C slides on the front end surface of the drain port member 2, and the projecting portion 42C is elastically deformed radially inward. When the elastic deformation of the protruding portion 42C proceeds to some extent, the contact (locking) of the upper side surface of the protruding portion 42C with the distal end surface of the drain port member 2 is released, and as a result, the attachment member 4 is moved through the inner periphery of the drain port member 2. Can be removed (pulled out). That is, by making the upper side surface of the protruding portion 42C an inclined surface, the attachment member 4 can be removed from the surface side of the bathtub 100 very easily. Further, the attachment member 4 can be removed without removing the drain port member 2.

  In addition, in the present embodiment, the lower side surface (surface located on the stepped portion 35 side) of the protruding portion 42C is an inclined surface that is inclined upward toward the outer periphery. Therefore, when attaching the attachment member 4 to the drain port member 2 or the like, by pushing the attachment member 4 downward while bringing the lower side surface of the protruding portion 42C into contact with the inner periphery of the upper end surface of the drain port member 2, The protrusion 42C is elastically deformed radially inward. Then, with the protrusion 42C elastically deformed radially inward, the attachment member 4 is moved downward through the inner periphery of the drain port member 2, and when the protrusion 42C reaches the position of the recess 9, the protrusion 42C The elastic deformation inward in the radial direction is released, and the projecting portion 42 </ b> C is fitted into the recess 9. Thereby, the attachment member 4 will be attached to the drain port member 2 grade | etc.,. That is, by attaching the lower side surface of the projecting portion 42 </ b> C as an inclined surface, the attachment member 4 can be attached very easily from the surface side of the bathtub 100. Further, the attachment member 4 can be attached without removing the drain port member 2.

  The support shaft mechanism 5 includes a support shaft 51 that is movable relative to the holding portion 41 in the vertical direction, and a cylindrical portion 52 that holds the support shaft 51 in a state in which the support shaft 51 can move up and down on the inner periphery. .

  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. Further, a transmission member 10 (for example, a metal wire) for transmitting the displacement of an operation unit (not shown) configured by a push button or the like is configured to be able to contact the lower end portion of the support shaft 51. ing. The transmission member 10 is configured to be able to reciprocate within a cylindrical tube 11 provided on the outer periphery thereof. When the transmission member 10 moves in the tube 11 due to the displacement of the operation portion, the support shaft 51 and thus the plug lid 6 move up and down. In the present embodiment, with the operation of the operation portion, the support shaft 51 is locked at the rising end and the support shaft 51 is lowered when the lock is released. 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, rubber, etc.). The lid portion 61 includes a disc-shaped umbrella-shaped portion 61A whose surface is gently curved, and a cylindrical projecting portion 61B extending downward from the back surface of the umbrella-shaped portion 61A. And the said packing 62 is fitted by the recessed part provided in the outer periphery of the said protruding part 61B. In addition, the packing 62 is configured such that when the drain port 101 is closed, the entire outer periphery of the packing 62 contacts the drain port member 2.

  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. 2, first, the attachment member 4 in which the support shaft mechanism 5 is inserted into the holding portion 41 is inserted into the pipe 3 from the upper end side opening of the pipe 3. Then, as shown in FIG. 3, the outer ring portion 42 of the attachment member 4 is placed on the stepped portion 35 of the pipe 3. In other words, the outer ring portion 42 is held on the stepped portion 35 so as not to be dropped by the pipe 3. As described above, the outer diameter D3 of the protruding portion 42C is slightly larger than the inner diameter D4 of the intermediate portion 32. Therefore, in a state where the outer ring portion 42 is placed on the stepped portion 35, a force directed radially inward is applied from the intermediate portion 32 to the protruding portion 42 </ b> C, and consequently, the outer ring portion 42 toward the upper end side of the pipe 3. The relative movement of (attachment member 4) is suppressed. That is, in the present embodiment, the intermediate portion 32 constitutes a relative movement restricting unit.

  After the attachment member 4 is set in the pipe 3, the pipe 3 is arranged on the back side of the bathtub 100 in a state where the seal member 8 is disposed between the upper end surface of the pipe 3 and the back surface of the bathtub 100 as shown in FIG. 4. Place. Next, after the sealing member 7 is disposed on the surface of the bathtub 100, the distal end portion of the drain port member 2 is disposed in the annular space between the outer peripheral surface of the main body portion 42 </ b> A and the inner peripheral surface of the pipe 3. Then, the drain port member 2 is rotated until the front end surface of the drain port member 2 contacts the abutting portion 33 of the pipe 3, and the male thread portion 22 of the drain port member 2 is screwed into the female thread portion 31 of the pipe 3. That is, in this embodiment, the outer periphery (male thread part 22) of the drain port member 2 is attached to the inner periphery (female thread part 31) of the upper end side of the pipe 3 with the outer ring part 42 placed on the step part 35. And the drain port member 2 and the piping 3 are attached to the bathtub 100 by completing the screwing of the male screw part 22 with respect to the female screw part 31. In addition, when the screwing of the male screw part 22 to the female screw part 31 is completed, the outer ring part 42 (projecting part 42C) of the attachment member 4 is sandwiched between the step part 35 and the outer peripheral lower end surface of the drain port member 2. It will be in the state. Further, since the outer ring portion 42 is placed on the stepped portion 35, even when a downward force is applied to the attachment member 4 by stepping on the plug lid 6, the attachment member 4 is It does not come out downward.

  Finally, by attaching the plug lid 6 to the tip of the support shaft 51, the arrangement of the drain plug device 1 with respect to the bathtub 100 is completed as shown in FIG.

  As shown in FIG. 5, even after the drain plug device 1 is attached, the pipe 3 is drained by pulling up the attachment member 4 from above the drain port member 2 (that is, from the surface side of the bathtub 100). The attachment member 4 and the support shaft mechanism 5 held by the drain port member 2 are removed through the inner periphery of the drain port member 2 with the mouth member 2 attached (that is, without removing the drain port member 2). Is possible. Moreover, it is also possible to reattach the removed attachment member 4 or the like from above the drain port member 2 through the inner periphery of the drain port member 2 with the drain port member 2 attached to the pipe 3. It is.

  As described above in detail, according to the present embodiment, the support shaft mechanism 5 is held by the attachment member 4, and the attachment member 4 that holds the support shaft mechanism 5 is placed on the stepped portion 35 of the pipe 3. Thus, the drain port member 2 can be attached to the pipe 3. That is, the drain port member 2 can be attached to the pipe 3 in a state where the attachment member 4 is held by the pipe 3 so as not to fall on the step portion 35. Therefore, when installing the drain plug device 1, a troublesome work of pulling out the support shaft mechanism 5 and the like from the inside of the pipe 3 becomes unnecessary. As a result, it is possible to improve the mounting workability and to prevent the members from being damaged due to the support shaft mechanism 5 and the like being pulled out.

  Furthermore, since the attachment member 4 is configured to be held on the stepped portion 35 so as not to be dropped by the pipe 3, it is not necessary to separately provide a member other than the pipe 3 in order to realize the above-described effects. Accordingly, it is possible to simplify the drain plug device 1 and effectively suppress an increase in manufacturing cost.

  Further, the attachment member 4 can be attached and detached from above the drain port member 2 through the inner periphery of the drain port member 2. Therefore, the attachment member 4 and the support shaft mechanism 5 held by the attachment member 4 can be easily removed without removing the drain port member 2 from the pipe 3. As a result, maintenance can be improved.

  In addition, since the inner diameter D1 of the innermost peripheral portion of the step portion 35 is smaller than the inner diameter D2 of the drain port member 2, the allowance of the attachment member 4 (outer ring portion 42) with respect to the step portion 35 is reduced. It can be ensured more reliably. Therefore, even when the stopper cover 6 is stepped on, even when a large force is applied to the support shaft mechanism 5 and thus the attachment member 4 toward the lower side (the stepped portion 35 side), the attachment member 4 is further removed. It can be surely prevented.

  Furthermore, according to the present embodiment, the inner diameter D2 of the drain port member 2 is relatively large. Therefore, attachment / detachment of the attachment member 4 that has passed through the inner periphery of the drain port member 2 can be performed more easily.

  In addition, the movement suppressing means (intermediate portion 32) can effectively suppress the attachment member 4 from being detached from the pipe 3 and falling off during attachment work or the like. Thereby, attachment of the drain port member 2 to the pipe 3 (that is, installation of the drain plug device 1) can be performed more easily, and further improvement in attachment workability can be achieved.

  Further, when the drain port member 2 is screwed into the pipe 3 by the relative position defining means (the bumping portion 33), the relative position along the vertical direction of the pipe 3 with respect to the drain port member 2 may be set to a constant position. it can. Thereby, the positional relationship along the up-down direction of the attachment member 4 mounted on the level | step-difference part 35 and the drain port member 2 can be made into a fixed position, and, by extension, the support shaft mechanism 5 and the plug lid attached to this The positional relationship along the vertical direction between 6 and the drain port member 2 can also be a fixed position. Therefore, when closing the drain port 101, the plug lid 6 can be more reliably brought into contact with the drain port member 2. As a result, the drainage port 101 can be reliably closed.

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

  (A) In the above embodiment, when the drain port member 2 is attached to the pipe 3, the outer ring part 42 is provided with respect to the step part 35 in order to hold the outer ring part 42 on the step part 35 so as not to drop by the pipe 3. However, the outer ring part 42 does not necessarily have to be placed on the step part 35 as long as the outer ring part 42 is held on the step part 35 so as not to drop by the pipe 3. Therefore, for example, the outer ring portion 42 is clamped and held by the intermediate portion 32 of the pipe 3, so that the outer ring portion 42 is separated from the step portion 35 on the step portion 35 by the pipe 3. May be configured to be held so as not to fall.

  (B) In the above embodiment, the relative position defining means is configured by the abutment portion 33, but the configuration of the relative position defining means is not limited to this. Therefore, for example, as shown in FIG. 6, the drain port member 2 is formed to have a diameter larger than the outer diameter of the male screw portion 22 above the male screw portion 22, and the drain port member 2 is screwed into the pipe 3. The overhanging portion 71 that contacts the upper end surface of the pipe 3 when combined may constitute the relative position defining means.

  (C) In the above embodiment, the movement suppressing means is configured by the intermediate portion 32 formed slightly smaller than the outer diameter D3 of the protruding portion 42C. However, the configuration of the movement suppressing means is limited to this. is not. Therefore, for example, as shown in FIG. 7, in the pipe 3, a convex locked portion 36 formed on the inner periphery of a portion disposed on the outer periphery of the outer ring portion 42, and the outer ring portion 42 (protrusion). The movement restraining means may be constituted by a concave locking portion 42D formed on the outer periphery of the portion 42C) and locked to the locked portion 36. In this case, as shown in FIG. 8, the movement of the outer ring portion 42 toward the upper end side of the pipe 3 can be suppressed by locking the locking portion 42 </ b> D to the locked portion 36. The locked portion may be concave and the locking portion may be convex.

  As shown in FIG. 9, the movement restraining means is formed between the female screw portion 31 and the stepped portion 35 (intermediate portion 32) in the pipe 3, and is the same as the (screw) pitch P <b> 1 of the female screw portion 31. A plurality of internally threaded (spiral) grooves 38A, 38B, and 38C having a pitch P2 and a protrusion 44 provided on the outer periphery of the outer ring portion 42 and disposed in at least one of the grooves 38A to 38C. It is good to do. In this case, as shown in FIG. 10, when the pipe 3 is manufactured by mold forming, one inner die MD corresponding to the female screw portion 31 and the groove portions 38 </ b> A to 38 </ b> C is removed from the female screw portion 31 during die cutting. The inner mold MD can be easily removed from the pipe 3 by rotating it so as to be removed. Also, the inner mold corresponding to the female thread 31 and the inner mold corresponding to the grooves 38A to 38C are not separated, and the female thread 31 and the grooves 38A to 38C can be formed by one inner mold MD. . Therefore, the movement suppressing means can be formed by a relatively simple method without increasing the manufacturing cost.

  Furthermore, by providing a plurality of (multiple) groove portions 38A to 38C along the axial direction of the pipe 3, one groove portion (for example, groove portion 38A) and other groove portions (for example, groove portions 38B and 38C) adjacent thereto are provided. Can be made relatively small. Therefore, when the drain port member 2 is attached to the pipe 3, the position along the axial direction of the pipe 3 in the attachment member 4 set to the pipe 3 can be adjusted more finely. For example, the outer ring portion 42 can be more reliably placed on the stepped portion 35 while the convex portion 44 is disposed with respect to the groove portions 38 </ b> A to 38 </ b> C. It can be held in a stable state so that it cannot fall. Thereby, attachment of the drain port member 2 to the pipe 3 can be performed more easily, and attachment workability can be further enhanced.

  In addition, as shown in FIG. 9, it is good also considering the depth of the groove parts 38A-38C along the radial direction of the piping 3 as a comparatively small thing. In this case, the engagement allowance of the convex part 44 with respect to the site | part which forms the groove parts 38A-38C among the piping 3 can be made comparatively small. That is, the convex portion 44 can be lightly applied to the pipe 3. Accordingly, the engagement of the convex portion 44 with respect to the pipe 3 can be released by simply moving the attachment member 4 along the axial direction of the pipe 3 without rotating the attachment member 4. Moreover, the set position of the attachment member 4 with respect to the piping 3 can be changed comparatively easily. As a result, it is possible to more easily attach the drain port member 2 to the pipe 3 and to further improve the mounting workability. Moreover, the convex part 44 can be arrange | positioned to the groove parts 38A-38C by simply pushing into the intermediate part 32 of the piping 3 without rotating the attachment member 4 (outer ring part 42). Thereby, attachment workability | operativity can be improved further.

  In addition, the groove part does not necessarily need to be plural, and may be one. Further, when providing a plurality of groove portions, it is preferable to make the depth of the groove portions relatively small. If the depth of the groove is relatively small, the pipe 3 can be manufactured more easily, and further, the above-described effects can be obtained.

  (D) In the above-described embodiment, a plurality of connecting portions for connecting the holding portion 41 and the outer ring portion 42 are provided. However, as shown in FIG. 11, only one connecting portion 43 is provided. May be. In this case, it is possible to obtain excellent drainage capacity and good appearance quality. Furthermore, since there is only one connecting portion 43 where dirt is relatively easy to adhere, the attachment member 4 has significantly fewer places where dirt adheres, and hygiene can be effectively improved.

  Further, when cleaning the attachment member 4, the connecting portion 43 is not easily obstructed, and the inner peripheral surface of the outer ring portion 42, the outer peripheral surface of the holding portion 41, and the like can be cleaned very easily. Therefore, combined with the fact that the attachment member 4 can be removed, it is possible to realize better cleaning properties.

  Moreover, while providing the hollow accommodating part 43A in which the transmission member 10 and the tube 11 are arrange | positioned in the downward side (back side) of the connection part 43, the transmission member 10 and the tube 11 are arrange | positioned in the said accommodating part 43A. The transmission member 10 and the tube 11 may be configured to be invisible or difficult to view when the connection portion 43 is viewed in plan (when the connection portion 43 is viewed from above). In this case, adhesion of dirt to the tube 11 and catching of hair and the like are less likely to occur, and more excellent drainage ability and hygiene can be more reliably realized. Moreover, when the connection part 43 is seen from the upper side, it becomes a more orderly appearance, and the appearance quality can be further improved.

  Furthermore, a positioning protrusion 43B that protrudes radially outward is provided on the outer periphery on the lower end side of the connecting portion 43, and the positioning protrusion 43B is arranged in a guide tube 37 provided in the pipe 3. Also good. The guide tube 37 extends toward the operation unit, and the transmission member 10 and the tube 11 are disposed therein. While the transmission member 10 and the tube 11 are arranged in the accommodating portion 43A, the positioning projection 43B is arranged in the guide tube 37, so that the transmission member 10 and the like arranged in the accommodating portion 43A are guided by the guide tube 37. It can be arranged with high precision to the side. As a result, the transmission member 10 can be reliably and easily disposed by the guide tube 37 without causing excessive bending or bending of the transmission member 10. As a result, the displacement of the operating portion can be more smoothly transmitted to the support shaft mechanism 5 (support shaft 51) via the transmission member 10 while preventing the transmission member 10 from being damaged.

  Further, when the drain port member 2 is attached to the pipe 3, the outer ring portion 42 is held on the stepped portion 35 so as not to fall by the pipe 3 by placing the outer ring portion 42 on the stepped portion 35. Moreover, the relative movement of the outer ring portion 42 (attachment member 4) toward the upper end side of the pipe 3 can be suppressed by arranging the positioning protrusion 43B in the guide pipe 37. That is, the movement suppressing means can be configured by the positioning protrusion 43B. Therefore, in addition to the above-described effects, the attachment member 4 can be prevented from falling off during the mounting, and the mounting workability can be improved.

  (E) In the above embodiment, the width of the stepped portion 35 is constant along the circumferential direction of the pipe 3. In contrast, as shown in FIGS. 12A and 12B, an extension 35 </ b> A that protrudes toward the central axis of the pipe 3 is provided in a part of the stepped part 35 along the circumferential direction of the pipe 3. Thus, the width of the stepped portion 35 may be configured to expand in a part along the circumferential direction. Furthermore, a predetermined part (for example, the leg part 42B, the connection part 43, etc.) of the attachment member 4 may be placed on the extension part 35A at the time of attachment and at least one after the attachment. In this case, the placement stability of the attachment member 4 with respect to the pipe 3 can be further increased. Further, for example, a plurality of predetermined portions may be provided on the attachment member 4, and a plurality of extension portions 35A may be provided on the step portion 35, and the predetermined portions may be placed on each of the extension portions 35A.

  Furthermore, it is good also as providing the positioning means for mounting the said predetermined part more reliably with respect to 35 A of extension parts. As the positioning means 73, for example, as shown in FIGS. 13 (a) and 13 (b), a recess 73A provided in the pipe 3, and a protrusion provided in the attachment member 4 and disposed in the recess 73A. 73B, and a configuration in which the predetermined portion is placed on the extension 35A in a state where the protrusion 73B is disposed in the recess 73A. In addition, by providing the positioning means 73, the relative position along the circumferential direction of the attachment member 4 with respect to the pipe 3 can be set to a fixed position. Therefore, it is possible to accurately arrange the transmission member 10 and the like disposed in the accommodating portion 43A toward the guide tube 37 without providing the positioning protrusion 43B.

  Further, when the predetermined portion is not normally disposed in the extension portion 35A, the attachment member 4 is excessively lifted from the stepped portion 35 by the positioning means (for example, the protruding portion 73B), or the attachment member 4 is moved to the stepped portion. For example, the position of the attachment member 4 with respect to the pipe 3 may be set so that a positional abnormality along the axial direction of the pipe 3 occurs. In this case, the installation operator can be easily recognized that there is an abnormality in the set state of the attachment member 4 with respect to the pipe 3, and the predetermined portion can be more reliably placed on the extension 35A. Can do. In addition, you may comprise a positioning means by the notch part, projection part, etc. which were provided in the piping 3, for example, and the projection part, dent part, etc. which are latched by these.

  (F) In the above embodiment, the drain lid 101 is configured to close the drain port 101 by tightly contacting the plug lid 6 with the drain port member 2. You may comprise so that it may close.

  (G) 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 drainage outlets such as a washing place of a unit bath as a tank body, a bathroom vanity, and a sink.

  (H) The configuration of the pipe 3 in the above embodiment is an exemplification. For example, a relatively short ring-shaped pipe having a stepped portion and a female screw portion on the inner peripheral surface may be used as the pipe 3.

  (I) In the above embodiment, the drain port member 2, the pipe 3, and the attachment member 4 are formed of a resin material, but the constituent materials such as the drain port member 2 are not particularly limited. Therefore, for example, the drain port member 2 and the like may be formed of a metal material (for example, stainless steel) having excellent corrosion resistance.

  (J) In the above embodiment, the support shaft mechanism 5 includes the support shaft 51 and the cylindrical portion 52, but the holding portion 41 of the attachment member 4 is configured to play the role of the cylindrical portion 52. Also good. That is, a support shaft mechanism may be configured by the support shaft 51 and the holding portion 41, and the support shaft mechanism and the attachment member may be integrated. Therefore, the holding part 41 may hold the support shaft 51 directly or indirectly (via the cylindrical part 52).

  DESCRIPTION OF SYMBOLS 1 ... Drain plug apparatus, 2 ... Drain port member 2, 3 ... Piping, 4 ... Attachment member, 5 ... Support shaft mechanism, 6 ... Plug cover, 22 ... Male screw part, 31 ... Female screw part, 32 ... Middle part (movement suppression Means), 33 ... abutting part (relative position defining means), 35 ... stepped part, 38A, 38B, 38C ... groove part, 41 ... holding part, 42 ... outer ring part, 44 ... convex part, 51 ... support shaft, 71 ... Overhang part (relative position defining means), 100 .. bathtub (tank), 101.

Claims (7)

A stopper lid provided at the drain of the tank body;
A support shaft mechanism having a support shaft for supporting the stopper lid so as to be movable up and down;
A cylindrical drainage port member inserted through the drainage port;
In a state where the tank body is sandwiched between the drain port member, a cylindrical pipe to which the outer periphery of the drain port member is attached to the inner periphery of its upper end side,
With an attachment member disposed on the inner periphery of at least one of the drain port member and the pipe,
The attachment member is
A holding portion for holding the support shaft on its inner circumference;
A drain plug device located on the outer peripheral side of the holding portion and having an annular outer ring portion fixed to the holding portion;
A stepped portion on which the outer ring portion is placed is formed below a portion where the outer periphery of the drain port member is attached in the inner periphery of the pipe,
In the state where the outer ring portion is held so as not to fall on the stepped portion by the pipe, the outer periphery of the drain port member can be attached to the inner periphery on the upper end side of the pipe,
In the state where the drain port member is attached to the pipe, the outer ring portion is placed on the step portion and is sandwiched between the drain port member and the step portion. Drain plug device.   In the state where the drain port member is attached to the pipe, the attachment member is configured to be attachable / detachable from above the drain port member through the inner periphery of the drain port member. The drain plug device according to claim 1.   The drain plug device according to claim 1 or 2, wherein an inner diameter of an innermost peripheral portion of the step portion is smaller than an inner diameter of the drain port member.   The movement suppression means for suppressing relative movement of the outer ring part toward the upper end side of the pipe in a state where the outer ring part is held unfallen on the stepped part by the pipe. The drain plug device according to any one of 1 to 3. The drain port member is attached to the pipe by screwing a male thread part formed on the outer periphery of the drain port member with a female thread part formed on the inner periphery on the upper end side of the pipe,
The movement suppression means is
An internal thread-shaped groove formed in a portion between the internal thread portion and the stepped portion of the pipe, and having the same pitch as the internal thread portion;
The drain plug device according to claim 4, wherein the drain plug device is configured by a convex portion provided on an outer periphery of the outer ring portion and disposed in the groove portion.   The drain plug device according to claim 5, wherein a plurality of the groove portions are provided along an axial direction of the pipe. The drain port member is attached to the pipe by screwing a male thread part formed on the outer periphery of the drain port member with a female thread part formed on the inner periphery on the upper end side of the pipe,
The drain lid can be closed by contacting the drain lid member with the stopper lid,
2. The apparatus according to claim 1, further comprising a relative position defining unit configured to make a relative position along a vertical direction of the pipe with respect to the drain port member a fixed position in a state where the drain port member is screwed into the pipe. The drain plug device according to any one of 6.

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