JP5899826B2 - Bath drain joint - Google Patents

Description

  The present invention relates to a bathtub drainage joint for inserting a drainage port of a bathtub and a drainage port of a bathtub pan, and more particularly, to a bathtub drainage joint having a bellows part that expands and contracts in the vertical direction.

  Patent Documents 1 and 2 have a bellows part that expands and contracts in the vertical direction as a bathtub drainage joint for connecting the drainage outlet of the bathtub of the bathroom unit and the drainage outlet of the bathtub pan on which the bathtub is placed. Have been described. The bathtub drainage joint having the bellows part can easily connect both the bathtub drainage port and the drainage port of the bathtub pan even if they are misaligned.

  The bathtub drainage joint of Patent Literature 1 is provided with a remote-operated drain plug that is opened and closed by remote operation using a release. The bathtub drainage joint of Patent Document 1 is provided with a bellows-shaped portion (a cylindrical shape having an equal diameter in the vertical direction) on the lower side of the bellows portion, and the release insertion hole provided in the bellows-shaped portion is used for remote operation. The release is inserted. 2 to 3 and 0012 paragraph of Patent Document 1 describe a configuration in which a thin bottom portion is provided in the release insertion hole, and the bottom portion is brought into close contact with the outer peripheral surface of the inserted release to maintain water tightness. .

  In Patent Literatures 1 and 2, the upper end surface of the bathtub drainage joint is brought into contact with the lower side of the bathtub drainage port. A recess is provided around the inner peripheral surface directly below the upper end surface, and a nut-like member is fitted into the recess. A flange is provided at the upper end of the cylindrical portion of the drain tube inserted through the bathtub drain, and a male screw is provided on the outer peripheral surface of the cylindrical portion. The bathtub drainage joint is connected to the bathtub drainage port by engaging the flange with the upper edge of the bathtub drainage port and tightening the male screw into the female screw on the inner peripheral surface of the nut-like member. In addition, the structure of the remote-operated drain plug using a release is well known as Patent Document 3.

JP-A-11-241387 6-87478 Shoko 60-22147

  As in Patent Document 1, in the bathtub drainage joint in which the trunk body is provided at the lower portion of the bathtub drainage joint and the release is inserted into the release insertion hole of the trunk trunk part, the bathtub drainage is provided by the amount provided for the trunk trunk. The joint height increases. When the height of the bathtub drainage joint is large, the distance between the bathtub and the bathtub pan is increased correspondingly, and the installation position of the bathtub is increased. That is, the straddle height of the bathtub is large. In recent years, from the viewpoint of barrier-free, it is desired that the bathtub straddle height is smaller. Moreover, in patent document 1, durability of the watertightness between a release insertion hole and a release is insufficient. For example, when rubber deteriorates with age and its elasticity decreases, water may leak from between the release and the release insertion hole.

  Moreover, like the bathtub drainage joints of Patent Documents 1 and 2, a nut-like member is fitted into the recess provided on the upper inner circumferential surface of the bathtub drainage joint, and the male screw on the outer circumferential surface of the drainage cylinder is screwed into the nut-like member. In the case of the bathtub drainage joint, the connection strength between the nut-like member and the drain tube cannot be sufficiently obtained unless the thickness of the nut-like member is sufficiently increased. When the thickness of the nut-like member is increased as described above, the height of the bathtub drainage joint is increased accordingly.

  The present invention solves the above-described conventional problems and aims to reduce the height of the bathtub drainage joint in a bathtub drainage joint having a bellows portion for connecting the bathtub drainage port and the bathtub pan drainage port. And

  Moreover, this invention aims at providing the bathtub drainage joint excellent in the watertightness of the insertion part of the release for operating the remote-control type drain plug in the one aspect | mode.

  The bathtub drainage joint of the first invention is a bathtub drainage joint for communicating the drainage port of the bathtub and the drainage port of the bathtub pan on which the bathtub is placed, in order to expand and contract the bathtub drainage joint in the vertical direction. In the bathtub drainage joint, which has a bellows part and a release insertion part for drawing a release for operating the remote control drain plug of the bathtub into the bathtub drainage joint, the release insertion part is provided in the bellows part It is characterized by that.

  It is preferable that the release insertion part has a release insertion cylinder part protruding laterally from the bellows part.

  A flange engaging groove may be provided around the inner peripheral surface of the distal end portion of the release insertion tube portion. In this case, the flange of the release guide pipe having a flange at one end engages with the flange engaging groove, and the release guide pipe is connected to the release insertion tube portion.

  A tubular neck that is provided at the top of the bathtub drainage joint with a drainage engaging flange that engages with the upper edge of the bathtub drainage and is inserted into the bathtub drainage below the drainage engaging flange An enlarged diameter portion that engages with the lower edge of the bathtub drainage port may be provided on the lower side of the neck portion, and a flange mounting groove may be provided around the inner peripheral surface of the enlarged diameter portion.

  In this case, an annular body with a female screw having a top flange engaged with the flange mounting groove, a hanging cylinder portion hanging from the top flange, and a female screw formed on the inner peripheral surface of the hanging cylinder portion is provided. It is arranged in the bathtub drainage joint. A flange portion disposed on the upper side of the drainage engaging flange; an insertion cylinder portion that is suspended from the flange portion and is inserted into the female threaded annular body; and an outer peripheral surface of the insertion cylinder portion. A male threaded annular body having a male thread formed is provided, and the male thread of the male threaded annular body is screwed into the female thread of the female threaded annular body.

  The bathtub drainage joint of the second invention is a bathtub drainage joint for communicating the drainage port of the bathtub and the drainage port of the bathtub pan on which the bathtub is placed, and has a bellows part that can be expanded and contracted in the vertical direction. In the drainage joint, an enlarged diameter portion that engages with the lower edge of the bathtub drainage port is provided, and a flange mounting groove is provided on the inner peripheral surface of the expanded diameter portion, and the top engaged with the flange mounting groove An annular body with a female screw having a flange, a hanging cylinder portion hanging from the top flange, and a female screw formed on the inner peripheral surface of the hanging cylinder portion is disposed in the bathtub drainage joint. It is what.

  2nd invention WHEREIN: The drainage port engaging flange engaged with the upper edge of a bathtub drainage port is provided in the uppermost part of this bathtub drainage coupling, The bathtub drainage port is penetrated below this drainage port engagement flange. It is preferable that a cylindrical neck portion is provided, and the enlarged diameter portion is provided below the neck portion.

  In this case, a flange portion disposed on the upper side of the drainage port engaging flange, an insertion cylinder portion depending from the flange portion and inserted into the annular body with the female screw, and an outer peripheral surface of the insertion cylinder portion The male threaded annular body having the male thread formed on the male threaded part is engaged with the female thread of the female threaded annular body.

  In the bathtub drainage joint of the first invention, since the release insertion part is provided in the bellows part, it is not necessary to provide a long sunk body part in the bathtub drainage joint as in the conventional bathtub drainage joint. The height of the bathtub drainage joint can be reduced.

  Therefore, the space between the bathtub and the bathtub pan can be reduced, and the displacement between the bathtub and the bathtub pan can be sufficiently accommodated while suppressing the installation height of the bathtub.

  By providing the release insertion portion with a release insertion tube portion protruding from the bellows portion to the side, deformation when the bellows portion expands and contracts is hardly transmitted to the tip of the release insertion tube portion. For this reason, the watertightness between the release and the release insertion hole at the distal end of the release insertion cylinder is improved.

  When a flange engagement groove is provided at the tip of the release insertion tube portion and the flange of the release guide tube is engaged with the flange engagement groove, watertightness between the release guide tube portion and the release is improved. In this case, watertightness is further improved by tightening the distal end portion of the release insertion tube portion in the direction of diameter reduction from the outer peripheral side by the tightening member.

  By providing a neck at the top of the bathtub drainage joint and by providing a drainage engagement flange on the upper side of the neck that engages the upper edge of the bathtub drainage outlet, the bathtub drainage joint is connected to the bathtub pan from the upper edge of the bathtub drainage outlet. It will exist in series to the drain outlet, and the water tightness of the bathtub drainage joint will be improved.

  A diameter-enlarged portion is provided below the neck portion, a flange mounting groove is provided on the inner periphery of the diameter-enlarged portion, and the top flange of the female threaded annular body is engaged with the flange mounting groove so that the female threaded annular body is provided. Is placed in the bathtub drainage joint, the male screw of the male threaded annular body is screwed into the female thread, and the flange of the male threaded annular body is pressed from the upper side of the drainage engagement flange of the bathtub drainage joint. Thus, the bathtub drainage joint is watertightly connected to the bathtub drainage port.

  Moreover, if it is this connection structure, a connection operation | work can be performed from the bathtub inner side, and even if it is a case where the space under a bathtub is narrow, it can construct easily, without being influenced.

  In addition, since the thickness of the top flange of the annular body with a female screw is considerably smaller than that of a conventional nut-shaped member, the groove width of the flange mounting groove is also small, and the height of the bathtub drainage joint is accordingly increased. Can be reduced.

  In the bathtub drainage joint according to the second aspect of the present invention, an enlarged diameter portion that engages with the lower edge of the bathtub drainage opening is provided, and a flange mounting groove is provided around the inner peripheral surface of the enlarged diameter portion. Since the top flange of the annular body with a female screw is engaged with the above, the height of the bathtub drainage joint can be reduced by reducing the thickness of the top flange and the groove width of the flange mounting groove. Also in the second invention, the male screw of the annular body with the male screw is screwed to the female screw, and the flange of the annular body with the male screw is pressed against the drainage port engaging flange of the bathtub drainage joint from above. A drainage joint is watertightly connected to the bathtub drain.

It is sectional drawing which shows the installation state of the bathtub drainage joint which concerns on embodiment. It is sectional drawing which shows the installation state of the bathtub drainage joint of the state which removed the remote control drain plug and the annular body with a male screw. It is a perspective view of a bathtub drainage joint. It is sectional drawing of a bathtub drainage coupling. It is a perspective view of a release guide tube. It is a perspective view which shows the installation state of a bathtub drainage coupling. It is a disassembled perspective view of a remote control type drain plug. It is an exploded sectional view of a remote control type drain plug.

  Hereinafter, embodiments will be described with reference to FIGS.

  As shown in FIGS. 1, 2, and 6, a bathtub 3 is installed on the bathtub pan 1, and a drain outlet 2 of the bathtub pan 1 and a drain outlet 4 of the bathtub 3 are connected by a bathtub drain joint 10. A drain elbow 5 is connected to the lower side of the bathtub pan 1, and the drain elbow 5 is connected to a drain trap 7 through a drain pipe 6 as shown in FIG. 6. The washing ground drainage also flows into the drain trap 7 from the upper surface opening 7a.

  As shown in FIGS. 3 and 4, the bathtub drainage joint 10 is provided with a drainage engagement flange 11 at the top, and a short tubular neck 12 is extended downward from the inner peripheral end of the drainage engagement flange 11. The enlarged diameter portion 13 is provided below the neck portion 12, the bellows portion 14 is provided below the enlarged diameter portion 13, and the bulging portion having the same shape as the enlarged diameter portion 13 is provided below the bellows portion 14. 15 is provided.

  The inner peripheral side of the enlarged diameter portion 13 is a flange mounting groove 13a. The inner peripheral side of the bulging portion 15 is a circular groove 15a having the same shape as the flange mounting groove 13a. A release insertion tube portion 16 that constitutes a release insertion portion protrudes laterally from the bellows portion 14. The distal end portion 17 of the release insertion tube portion 16 has an enlarged bowl shape. A flange engaging groove 17 a is provided around the inner peripheral surface of the tip portion 17. All of these portions of the bathtub drainage joint 10 are integrally formed of rubber having elasticity and water resistance.

  A release guide tube 20 shown in FIG. 5 is connected to the release insertion tube portion 16. The release guide tube 20 has a curved tube body 21, and a flange 22 is provided at one end of the tube body 21. As shown in FIGS. 1 and 2, the release guide tube 20 is connected to the release insertion tube portion 16 by fitting the flange 22 into the flange engagement groove 17 a. The release guide tube 20 is made of a hard synthetic resin. The release 60 is inserted through the release guide tube 20. As shown in FIG. 8, the release 60 includes a sheath tube (sheath) 61 and a wire 62 inserted into the sheath 61.

  An annular body 30 with a female screw is installed in the upper part of the bathtub drainage joint 10. The female threaded annular body 30 includes an upper end top flange 31, a hanging cylinder part 32 depending from the inner peripheral edge of the top flange 31, and a female thread 33 provided on the inner peripheral surface of the hanging cylinder part 32. Have. This female threaded annular body 30 is mounted on the bathtub drainage joint 10 by fitting the top flange 31 into the flange mounting groove 13 a of the bathtub drainage joint 10.

  A ring 40 for connection to the bathtub pan 1 is installed in the lower part of the bathtub drainage joint 10. The connecting ring 40 includes a flange 41 at the upper end, a cylindrical portion 42 that hangs down from the inner peripheral edge of the flange 41 and protrudes downward from the bathtub drainage joint 10, and an outer circumferential surface of the cylindrical portion 42 in the circumferential direction. And a lock claw 43 extending inward, and an inward flange 44 provided inward from the upper inner periphery of the cylindrical portion 42. The inner periphery of the inward flange 44 is hexagonal, and the connecting ring 40 can be rotated by engaging a hexagonal tool (not shown). The lower part of the bathtub drainage joint 10 is connected to the drainage port 2 of the bathtub pan 1 by engaging the lock claw 43 with the lower edge of the drainage port 4 of the bathtub pan 2 as shown in FIGS.

  As shown in FIG. 8, an annular body 50 with a male screw for fixing the upper part of the bathtub drainage joint 10 to the bathtub 3 is an uppermost flange part 51 and an insertion cylinder part 52 depending from the inner peripheral end of the flange part 51. And a male screw 53 on the outer peripheral surface of the insertion tube portion 52, a drain plug device locking portion 54 provided on the lower inner peripheral surface of the insertion tube portion 52, and the like.

  As shown in FIG. 2, the male threaded annular body with the drainage engagement flange 11 of the bathtub drainage joint 10 overlapped with the upper edge of the drainage outlet 4 of the bathtub 3 and the neck 12 fitted inside the drainage outlet 4. 50 insertion cylinders 52 are inserted into the bathtub drainage joint 10 from above, the male screw 53 is tightened into the female thread 33 of the annular body 30 with a female thread, and the upper part of the bathtub drainage joint 10 is connected and fixed to the drainage port 4. To do.

  In addition, the release guide pipe | tube 20 is connected to the front-end | tip part of the release insertion cylinder part 16 of the bathtub drainage joint 10 previously.

  Next, the opening / closing mechanism of the drain plug 70 will be described with reference to FIGS.

  The drain plug 70 includes a substantially disc-shaped plug body 71 and a cylindrical portion 72 projecting downward from the center of the plug body 71.

  The tubular portion 72 is fitted to the central tubular body 83 of the drain plug support 80 so as to be slidable in the vertical direction from above. The drain plug support 80 includes an outer peripheral ring 81, a notch 82 provided on the lower edge side of the outer peripheral ring 81, and the central cylinder that is disposed on the axial center of the outer peripheral ring 81 and protrudes upward. A body 83, a radial piece 86 connecting the central cylinder 83 and the outer ring 81, and a locking piece 85 projecting inward from the lower end of the central cylinder 83. By engaging the notch 82 with the drain plug device locking portion 54 of the male threaded annular body 50, the drain plug support 80 is fixed to the male threaded annular body 50. An attachment 84 is inserted into the central cylinder 83 from below. The attachment 84 is held in the central cylinder 83 by engaging the locking piece 85 with the bottom surface of the inserted attachment 84. The distal end (one end) of the release 60 is inserted into the attachment 84 from below. As shown in FIG. 1, the release 60 passes through the release guide tube 20 and is routed upward along the side wall of the bathtub 3. Although illustration is omitted, a drain plug operation handle is provided at the upper edge flange portion of the bathtub 3, and the other end of the release 60 is connected to the drain plug operation handle.

  When the operation handle is pushed in, the wire 62 advances and the drain plug 70 is pushed up. When the operation handle is pushed again, the operation handle and the wire 62 are retracted by the action of a return spring provided on the operation handle, and the drain plug 70 is lowered.

  In the bathtub drainage joint 10, the release insertion cylinder part 16 is provided in the bellows part 14, and the height of the bathtub drainage joint 10 is small because the conventional trunk part is not provided. Further, the female threaded annular body 30 has a small top flange 31 fitted in the flange mounting groove 13a, and the flange mounting groove 13a has a small vertical width. Therefore, the height of the bathtub drainage joint 10 is small. Since the female threaded annular body 30 is provided with a female thread on the inner peripheral surface of the hanging cylinder portion 32, the male threaded annular body 50 and the female threaded annular body 30 are firmly screwed together. Can do. Moreover, watertightness becomes favorable by pinching the edge part of the drain port 4, the drain port engaging flange 11, and the upper surface part of the enlarged diameter part 13 with the collar part 51 and the top flange 31 strongly.

  In this bathtub drainage joint 10, the neck 12 is passed through the bathtub drainage port 4 and the drainage port engaging flange 11 is engaged with the upper edge of the drainage port 4. It can be easily inserted into the bathtub drainage joint 10 from above and fastened to the female threaded annular body 30.

  Since this bathtub drainage joint 10 is integrally formed with rubber from the drainage port engaging flange 11 on the upper side of the bathtub drainage port 4 to the bulging portion 15, it is excellent in water tightness.

  In this embodiment, a flange engagement groove 17a made of a circumferential groove is provided on the inner periphery of the distal end portion 17 of the release insertion tube portion 16, and the flange 22 of the release guide tube 20 is fitted into the flange engagement groove 17a. It is combined. By setting the length of the release insertion cylinder part 16 to be as long as about 10 to 30 mm, even if the bellows part 14 is deformed up and down, this deformation is not transmitted to the tip part 17. For this reason, the watertightness of the flange 22 and the flange engaging groove 17a is good. It is also possible to increase the watertightness of the flange 22 and the flange engaging groove 17a by tightening the distal end portion 17 from the outer periphery with an annular fastener (not shown).

  Further, by setting the diameter of the release insertion portion as wide as 10 to 30 mm, there is no risk of pressing the release even if the bellows portion is deformed up and down.

  The above-described embodiment is an example of the present invention, and the present invention may be configured other than illustrated.

DESCRIPTION OF SYMBOLS 1 Bath tub 2 Bath tub drain outlet 3 Bath tub 4 Bath tub drain 10 Bath tub drain joint 11 Drain port engagement flange 12 Neck part 13 Diameter expansion part 13a Flange mounting groove 14 Bellows part 15 Expansion part 15a Circulation groove 16 Release insertion cylinder part 17 Tip portion 17a Flange engagement groove 20 Release guide tube 22 Flange 30 Female threaded annular body 31 Top flange 32 Hanging cylinder part 33 Female thread 40 Connection ring 50 Male threaded annular body 51 Hook 52 Insertion tube part 53 Male screw 60 Release 70 Drain tap

Claims (6)

A bathtub drainage joint for communicating a drain outlet of a bathtub and a drain outlet of a bathtub pan on which the bathtub is placed,
A bellows portion for expanding and contracting the bathtub drainage joint in the vertical direction;
In a bathtub drainage joint having a release insertion part for drawing a release for operating the remote control type drain plug of the bathtub into the bathtub drainage joint,
The release insertion part is provided in the bellows part ,
The bellows part is provided with a first large diameter part, a small diameter part and a second large diameter part continuously,
The release insertion part has a release insertion cylinder part projecting laterally from the first large diameter part, the small diameter part, and the second large diameter part of the bellows part . The bathtub drainage joint according to claim 1 , wherein a flange engaging groove is provided around an inner peripheral surface of a distal end portion of the release insertion tube portion. The bathtub drainage according to claim 2 , wherein the flange of a release guide pipe having a flange at one end engages with the flange engaging groove, and the release guide pipe is connected to the release insertion tube portion. Fittings. In any one of Claims 1 thru | or 3 ,
At the top of the bathtub drainage joint, a drainage engaging flange that engages with the upper edge of the bathtub drainage is provided,
Below the drainage engaging flange, a cylindrical neck that is inserted into the bathtub drainage is provided,
On the lower side of the neck portion, an enlarged diameter portion that engages with the lower edge of the bathtub drainage port is provided,
A bathtub drainage joint, wherein a flange mounting groove is provided around the inner peripheral surface of the enlarged diameter portion. In claim 4 ,
An annular body with a female screw having a top flange engaged with the flange mounting groove, a hanging cylinder portion depending from the top flange, and a female screw formed on the inner peripheral surface of the hanging cylinder portion is the bathtub drainage joint. The bathtub drainage joint characterized by being arrange | positioned in the inside. In Claim 5 , The collar part arrange | positioned above the said drain outlet engagement flange, The insertion cylinder part suspended from this collar part, and inserted in the inside of this annular body with a female screw, Comprising a male threaded annular body having a male thread formed on the outer peripheral surface;
The bathtub drainage joint, wherein the male screw of the male threaded annular body is screwed into the female thread of the female threaded annular body.

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