JP5575524B2 - Bathtub adapter - Google Patents

Description

  The present invention relates to a hot water inlet adapter for a bathtub that is attached to an inner wall portion of the bathtub for hot water supply.

  The hot water supply adapter attached to the side wall of the bathtub is provided with a flow path partition member in which a complicated flow path is provided. The front part of such a channel partition member is provided with a disk-shaped in-tank protrusion disposed in a manner protruding from the inner wall surface of the bathtub, and on both sides of the outer peripheral side surface of the in-tank protrusion, Two openings are provided. And in the hot water supply adapter called the non-polar type without a valve shown in the following patent document 1, hot water in the bathtub is sucked from one opening (suction port) on the suction side when reheating, and the outdoor hot water supply device In addition, the hot water supplied from the water heater is supplied into the bathtub from the other opening (discharge port) on the discharge side.

  Such a hot-water supply adapter has a cover member attached as a filter to the protruding part in the tank, but if the cover member is removed and the reheating is performed while taking a bath, suction from the suction port Accompanying the hot water, hair such as the bather's hair may be inhaled.

  In view of this, the hot-water supply adapter disclosed in Patent Document 2 below forms a negative pressure reducing opening near the suction port on the front surface of the protruding portion in the tank, and hot water is drawn from the negative pressure reducing opening when the hair is sucked into the suction port. As a result, the negative pressure (suction force) is reduced and the hair can be easily extracted.

JP 2002-340415 A JP 2003-90628 A

  However, since the conventional hot water supply adapter shown in Patent Document 2 forms a negative pressure reducing opening at a position adjacent to the suction port in the protruding portion in the tank, the hair is sucked from the suction port on the outer peripheral surface. In this case, the negative pressure reducing opening may be blocked by the remaining other hair or the like, and in this case, there is a problem that the suction force is not reduced and it is difficult to remove the hair.

  The present invention has been made in view of the above problems, and provides a hot water inlet adapter for a bathtub that can easily and easily remove the hair even when the hair is sucked from the opening on the suction side. With the goal.

  In order to solve the above problems, the present invention comprises the following means.

[1] An in-tank protruding portion arranged to protrude into the bathtub is provided on the inner wall surface of the bathtub, and first and second openings are provided on the outer peripheral side surface of the in-tank protruding portion, and the first and second thereof. Corresponding to the opening, first and second flow paths are provided inside the tank protrusion, and hot water in the bathtub sucked from one of the first and second openings is the first. , A hot water inlet adapter for a bathtub that is sucked into one flow path corresponding to the one opening of the second flow path and flows out of the bathtub,
A pressure regulating channel communicated with the one channel is provided inside the protruding portion in the tank, and an inlet of the pressure adjusting channel is provided on an outer surface of the protruding portion in the tank,
When at least a part of the one opening is closed during the suction of hot water, hot water in the bathtub is sucked in from the inlet of the pressure regulating flow path, and the hot water passes through the pressure regulating flow path, A hot water adapter for a bathtub, which is configured to flow into a flow path.

  [2] The hot water inlet adapter for bathtubs according to the preceding item 1, wherein an inlet of the pressure adjusting flow path is provided on a rear surface of the protruding portion in the tank.

  [3] The hot water inlet adapter for bathtubs according to the preceding item 1, wherein an inlet of the pressure adjusting flow path is provided on an outer peripheral side surface of the protruding portion in the tank.

  [4] The hot water inlet adapter for bathtubs according to the above item 1, wherein the inlet of the pressure adjusting flow path is provided on the front surface of the protruding portion in the tank.

  [5] The hot water inlet adapter for a bathtub according to any one of the preceding items 1 to 4, wherein the inlet of the pressure adjusting flow path is configured by a large number of small holes formed in the outer wall of the protruding portion in the tank.

  [6] The hot water inlet adapter for bathtubs according to the above item 5, wherein the outer diameter of the small hole is set to 0.5 to 0.7 mm.

  [7] The bathtub hot-water supply adapter according to any one of [1] to [4], wherein the inlet of the pressure adjusting flow path is constituted by a plurality of slits formed in an outer wall of the protruding portion in the tank.

  [8] The bathtub hot-water supply adapter according to [7], wherein the slit is formed in a shape of a “<” that bends in the middle.

  [9] The hot water inlet adapter for bathtubs according to the above item 7 or 8, wherein the width of the slit is set to 0.5 to 0.7 mm.

[10] A cover member for covering the protruding portion in the tank is provided detachably on the protruding portion in the tank,
The first item, wherein first and second openings are provided in the cover member corresponding to the first and second openings of the protruding portion in the tank, and filter parts are detachably provided in the openings on the cover member side. The hot water inlet adapter for bathtubs according to any one of 1 to 9.

[11] Any one of the preceding items 1 to 10, wherein a grid-like member for preventing entry of foreign matter is provided in the vicinity of the first and second openings in the first and second flow paths of the protruding portion in the tank. [12] The bath inner wall surface is provided with an in-tank protruding portion arranged to protrude into the bathtub, and first and second openings are provided on the outer peripheral side surface of the in-tank protruding portion. And the 1st, 2nd flow path is provided inside the said protrusion part in a tank corresponding to the 1st, 2nd opening, and the bathtub inhaled from one opening among the said 1st, 2nd opening The hot water in the bathtub is a hot water inlet adapter for a bathtub that is drawn into one of the first and second flow paths and flows out of the bathtub.
The first and second pressure regulating channels communicated with the first and second channels are respectively provided inside the tank protrusions, and the respective inlets of the first and second pressure regulating channels are provided, Provided on the outer surface of the protruding portion in the tank,
When at least a part of the one opening is closed during the suction of hot water, from the inlet of one of the pressure regulating channels corresponding to the one of the first and second regulating channels, the inside of the bathtub A hot water inlet adapter for a bathtub, wherein hot water is sucked and the hot water passes through one pressure regulation flow path and flows into the one flow path.

  According to the hot water inlet adapter for bathtubs of the invention [1] to [4], when the hair is sucked from one opening (suction port) leading to one channel (suction channel), Hot water in the bathtub is sucked into the suction channel through the corresponding pressure regulation channel. As a result, the negative pressure in the suction channel is reduced and the suction force is reduced, so that the hair sucked into the suction port can be easily extracted with a weak force. In particular, in the present invention, since one flow path and the pressure regulation flow path inlet are provided via the pressure regulation flow path, it is possible to dispose the pressure regulation flow path inlet and one opening away from each other. it can. For this reason, the pressure regulation flow path inlet is not blocked by the remaining other hair or the like, and the suction force can be reliably reduced when the hair is sucked.

  According to the hot water inlet adapter for bathtubs of the inventions [5] to [9], foreign matter such as hair can be more reliably prevented from entering from the pressure adjusting channel inlet.

  According to the hot water adapter for a bathtub of the invention [10], only the filter component for the opening on the discharge side can be removed from the first and second openings, thereby reducing the flow resistance of the opening on the discharge side. Therefore, hot water can be discharged into the bathtub efficiently and smoothly.

  According to the hot water inlet adapter for bathtubs of the invention [11], when the hair is sucked, the hair is caught by the lattice-like member, so that the hair can be prevented from entering the inner part, and the hair can be extracted more easily.

  According to the invention [12], since the pressure adjusting flow path (first and second pressure adjusting flow path) is provided in both the first and second flow paths, the same effect as described above can be obtained. Thus, it is possible to provide a hot water inlet adapter for a bathtub that is particularly suitable as a nonpolar type.

FIG. 1 is a side cross-sectional view showing a hot water inlet adapter for bathtubs according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view showing the hot water supply adapter according to the first embodiment. FIG. 3 is a cross-sectional view showing the tank inner part of the hot water supply adapter in the first embodiment. FIG. 4 is an exploded perspective view showing components inside the tank of the hot water supply adapter in the first embodiment. FIG. 5 is a front view showing an outside tank attachment member in the hot water supply adapter of the first embodiment. FIG. 6 is a partially cutaway perspective view showing the flow path partition member of the hot water supply adapter in the first embodiment with the cover member attached. FIG. 7 is an exploded perspective view showing the flow path partition member and the cover member of the hot water supply adapter in the first embodiment. FIG. 8 is a partially cutaway perspective view showing a flow path partition member in the hot water supply port adapter of the first embodiment. FIG. 9 is a view showing a flow path partition member in the hot water supply adapter according to the first embodiment. FIG. 9 (a) is a front view, FIG. 9 (b) is a side view, and FIG. 9 (c) is a bottom view. is there. FIG. 10 is a view showing the flow path partition member in the hot water supply adapter according to the first embodiment with the front wall (front cover) removed, wherein FIG. 10 (a) is a front view and FIG. 10 (b) is a side view. The figure and the figure (c) are bottom views. FIG. 11 is a view showing a cover member in the hot water supply adapter according to the first embodiment. FIG. 11 (a) is a front view, FIG. 11 (b) is a side view, and FIG. 11 (c) is a bottom view. FIG. 12: is front sectional drawing which shows the hot-water port adapter for bathtubs which is 2nd Embodiment of this invention. FIG. 13A is a front view showing a flow path partition member in the hot water supply adapter for bathtubs of the second embodiment. FIG. 13B is a side view showing a flow path partition member in the hot water inlet adapter for bathtubs of the second embodiment. FIG. 14: is a front view which shows the flow-path partition member in the hot-water supply adapter for bathtubs of 2nd Embodiment in the state which removed the front wall (front cover). FIG. 15 is an exploded perspective view showing a hot water inlet adapter for bathtubs according to a third embodiment of the present invention. FIG. 16 is an exploded perspective view showing the flow path partition member of the hot water supply adapter in the third embodiment. FIG. 17 is a front view showing a flow path partition member of the third embodiment. FIG. 18 is a perspective view of the flow path partition member of the third embodiment as viewed from the back side.

<First Embodiment>
1 and 2 are views showing a bathtub hot water supply adapter according to a first embodiment of the present invention. As shown to both figures, the hot-water supply adapter of this embodiment is assembled | attached to the attachment hole H provided in the side wall W of the bathtub. In addition to the hot water treatment that supplies hot water supplied from an outdoor water heater into the bathtub, this hot water inlet adapter sucks hot water from the bathtub and sends it to the outdoor water heater, where it is reheated and heated. It is possible to carry out a chasing process in which hot water is returned to the bathtub.

  As will be described in detail below, this hot water supply adapter can be used by connecting either the forward pipe or the return pipe connected to the hot water heater to the two outer pipe connecting portions 1a and 1b provided in the adapter. The so-called nonpolar type. Furthermore, it is a valveless type in which a flow control valve for controlling the flow of water such as a backflow prevention valve is not provided inside the adapter.

  The hot water supply port adapter of the present embodiment includes a tank outer attachment member 1, a male screw member 2, a flow path partition member 3, and a cover member 9 as basic components. In the following description, the inner side (left side in FIG. 1) with respect to the bathtub along the axial direction of the hot water supply adapter is referred to as “front side” or “front side”, and the outer side with respect to the bathtub (right side in FIG. 1). ) As “rear side” or “back side”.

  As shown in FIGS. 1, 2, and 5, the outside-tubing attachment member 1 is disposed on the same axis coaxially with a cylindrical outer cylinder part 12 whose front side is open and whose rear side is closed, and inside the outer cylinder part 12. A cylindrical inner cylinder portion 11, a flat ring-shaped flange portion 15 provided on the outer periphery of the front end of the outer cylinder portion 12, and tubular first and second tubes provided on the rear end blocking wall of the outer cylinder portion 12. The outer tube connecting portions 1a and 1b are integrally provided.

  The internal space of the inner cylinder part 11 is configured as a part of an inner flow path A described later, and the annular space between the inner cylinder part 11 and the outer cylinder part 12 is configured as a part of an outer flow path B described later. Has been. The first outer pipe connection portion 1 a is communicated with the inner flow path A, and the second outer pipe connection portion 1 b is communicated with the outer flow path B.

  A female screw for assembling to the male screw member 2 is engraved on the inner peripheral surface of the front portion of the outer cylinder portion 12. Further, as shown in FIG. 1, a synthetic rubber O-ring 81 is accommodated on the inner peripheral surface of the inner cylinder portion 11.

  A synthetic resin packing 82 is attached to the outer peripheral edge portion of the flange portion 15 of the tank outer attachment member 1 for watertightness between the flange portion 15 and the bathtub outer wall surface.

  As shown in FIGS. 1 to 4, the male screw member 2 integrally includes a cylindrical body portion 21 whose front and rear ends are open, and a flat ring-shaped flange portion 25 provided on the outer periphery of the front end of the body portion 21. It is composed of a rigid synthetic tree molded product with a cylindrical shape with a hook.

  A male screw is engraved on the outer peripheral side surface of the body portion 21 in correspondence with the female thread of the outer tube portion 12 in the tank outer attachment member 1, and the body portion 21 is placed in the outer tube portion 12 of the tank outer attachment member 1. It can be fixed by screwing in.

  A plurality of lock recesses 26 are formed on the front side of the flange portion 25 at predetermined intervals along the circumferential direction (see FIG. 2 and the like).

  Further, as shown in FIGS. 2 and 4, a plurality of locking grooves 27 are formed on the outer peripheral edge of the flange portion 25 at intervals in the circumferential direction. Each locking groove 27 has only one end in the circumferential direction opened on the front side (inlet side), and all the circumferential direction is opened on the rear side (back side), from the side (outer diameter direction). It is formed in an L shape when viewed.

  A ring-shaped packing 83 made of synthetic rubber is provided on the rear surface side (back surface side) of the flange portion 25 of the male screw member 2 so as to be interposed between the inner wall surface of the bathtub (see FIG. 1).

  And the flange part 15 of the external thread member 2 is inserted in the bathtub via the packing 83 in the state arrange | positioned so that the flange part 15 of the tank outer attachment member 1 may follow the peripheral part of the attachment hole H in the outer wall surface of a bathtub. The body portion 21 of the male screw member 2 is screwed into the outer cylinder portion 12 of the outside-tubing attachment member 1 through the attachment hole H so as to be pressed against the peripheral edge portion of the attachment hole H on the wall surface. As a result, the peripheral edge of the attachment hole in the bathtub side wall W is sandwiched by the flange portions 15 and 25 of the both members 1 and 2, and the both members 1 and 2 are assembled in the bathtub sidewall W in a penetrating state.

  As shown in FIGS. 6 to 10, the flow path partition member 3 includes an elongated cylindrical portion 31 extending in the axial direction (front-rear direction), and a disk-shaped tank provided at the front end of the cylindrical portion 31. And a protrusion 4.

  The in-tank protruding portion 4 has a hollow structure in which a plurality of flow paths are provided, and is integrally formed so as to surround the circular plate-like rear wall 41 and the front side outer periphery of the rear wall 41. An outer peripheral wall 42 and a front wall 5 made of a lid that closes the front side opening of the outer peripheral wall 42 are provided.

  In this embodiment, the rear wall 41 and the outer peripheral wall 42 of the in-tank protrusion 4 and the front wall 5 constitute the outer wall of the in-tank protrusion 4, and the outer wall surface of the in-tank protrusion 4 The outer surface of the in-tank protrusion 4 is configured.

  As will be described later, the cylindrical portion 31 is connected to the inner cylinder portion 11 of the outer tank attachment member 1, and the inside of the cylindrical portion 31 and the inner cylinder portion 11 in the outer tank attachment member 1 communicating therewith. Thus, the inner flow path A is formed. Further, as will be described later, the cylindrical portion 31 is disposed inside the body portion 21 of the male screw member 2, and the annular space between the cylindrical portion 31 and the body portion 21 and the inner portion of the outside-tubing attachment member 1 that communicates therewith. The outer flow path B is formed by the annular space between the cylindrical portion 11 and the outer cylindrical portion 12.

  As shown in FIG. 10 and the like, the rear wall 41 of the in-tank protrusion 4 is formed with a first communication hole 41a corresponding to the cylindrical portion 31, and corresponding to the side of the cylindrical portion 31, An arc-shaped second communication hole 41b is formed. Further, first and second openings 42 a and 42 b are formed on both lower sides of the outer peripheral wall 42.

  As shown in FIGS. 7 and 10, a plurality of partition walls 43 are formed on the front side of the rear wall 41, and the partition walls 43 allow the first and second independent first and second in the in-vessel protrusion 4. Channels 43a and 43b are formed.

  The first flow path 43a is formed from the first communication hole 41a to the first opening 42a, and the inner side (inner flow path A) of the inner side of the cylindrical portion 31 behind the in-tank protrusion 4 via the first communication hole 41a. ) And open to the outside (in the bathtub) through the first opening 42a.

  The second flow path 43b is formed from the second communication hole 41b to the second opening 42b, and the outside (outer flow path B) of the cylindrical portion 31 at the rear of the in-tank protruding portion 4 via the second communication hole 41b. ) And open to the outside (in the bathtub) through the second opening 42b.

  Further, in the in-tank protruding portion 4, a first pressure regulation flow path 6a is provided adjacent to the side of the first flow path 43a, and a second pressure regulation flow path is adjacent to the side of the second flow path 43b. 6b is provided.

  The 1st, 2nd pressure regulation flow paths 6a and 6b are connected to the 1st and 2nd flow paths 43a and 43b, respectively, and each communicating part is constituted as outlet 61a and 61b.

  The inlets 62a and 62b of the first and second pressure regulating channels 6a and 6b are formed on both sides of the rear wall 41 of the in-tank protruding portion 4 corresponding to the first and second pressure regulating channels 6a and 6b. Has been. Each inflow port 62a, 62b is formed by a large number of small diameter through holes (small holes).

  In addition, on the inner peripheral side (axial center side) of the first and second pressure regulating flow channel inlets 62a and 62b on the rear surface of the rear wall 41, an annular synthetic rubber packing for watertightness with the male screw member 2 is provided. 84 is provided continuously along the circumferential direction (see FIG. 4 and the like). In other words, the pressure regulation flow path inlets 62a and 62b are disposed outside the packing 84, whereby the pressure regulation flow path inlets 62a and 62b are opened not on the adapter but on the bathtub side.

  As shown in FIGS. 8 to 10, lattice members 45, 45 are provided in the vicinity of the first and second openings 42 a, 42 b in the first and second flow paths 43 a, 43 b in the in-tank protrusion 4. Thus, foreign matter such as hair sucked from the openings 42a and 42b is prevented from being sucked into the hot water supply side.

  A plurality of rectangular holes 52 are formed along the width direction of the flow paths 43a and 43b between the first and second openings 42a and 42b and the lattice members 45 and 45 in the front wall 5 of the protruding portion 4 in the tank. ing.

  As shown in FIGS. 3 and 4, the rear end portion of the outer peripheral wall 42 of the projecting portion 4 in the tank is provided with a rear projecting edge portion 46 projecting rearward over the entire circumference. Locking protrusions 47 are protruded at intervals in the circumferential direction at several locations on the inner peripheral side.

  A plurality of locking grooves 48 are formed on the outer peripheral side surface of the outer peripheral wall 42 of the in-tank protruding portion 4 at intervals along the circumferential direction. Each locking groove 48 is formed so that only one end in the circumferential direction is opened on the front side (inlet side) and extends along the circumferential direction on the rear side (back side). In the state seen from (direction), it is formed in an L shape.

  As shown in FIGS. 7 to 10, a lock pin mounting hole 55 is provided on the upper side of the in-tank protrusion 4. A lock pin 56 is inserted into the lock pin mounting hole 55 from the front side so as to be pushed backward. When the lock pin 56 is pushed rearward (locked state), the front end (rear end) of the pin 56 protrudes rearward from the rear surface of the rear wall 41 of the in-tank projecting portion 4 and forward. In the pulled state (unlocked state), the tip of the pin 56 is accommodated in the in-vessel protrusion 4 so as not to protrude rearward from the rear surface of the rear wall 41. Further, the lock pin 56 can be fixed in either the locked state (push-in state) or the unlocked state (drawn state). For example, the lock pin 56 in the unlocked state can be pushed with a finger. For example, the lock state 56 can be shifted to and can be shifted to the unlocked state by pulling the lock pin 56 in the locked state to the front using tweezers or the like.

  As shown in FIGS. 1 to 4, the channel partition member 3 having the above configuration is assembled to the outside tank attachment member 1 and the male screw member 2 assembled to the bathtub side wall W, as shown in FIGS. The cylindrical portion 31 in the flow path partition member 3 set in the state) is inserted into the inner cylinder portion 11 of the outside-tubing attachment member 1 disposed inside the male screw member 2.

  Further, the rear projection edge 46 of the in-tank protrusion 4 in the flow path partition member 3 is externally fitted from the front side of the flange portion 25 of the male screw member 2, and the locking protrusion 47 of the flow path partition member 3 is Insert into the two-side locking groove 27 from the front side. Thereafter, the channel partition member 3 is twisted in a small amount in the circumferential direction, so that the locking protrusion 47 of the channel partition member 3 enters the rear end position that is displaced in the circumferential direction from the inlet side of the locking groove 27. Thus, the flow path partition member 3 cannot be removed from the male screw member 2 in the front-rear direction.

  Subsequently, the lock pin 56 of the flow path partition member 3 is pushed into a locked state. Then, the tip of the lock pin 56 is fitted into any of the corresponding lock recesses 26 in the male screw member 2. Thereby, since the flow path partition member 3 cannot be twisted with respect to the male screw member 2, it is possible to prevent the assembly of the flow path partition member 3 and the male screw member 2 from being released unexpectedly. .

  As already described, the O-ring 81 provided in the inner cylinder portion 11 of the outside-tubing attachment member 1 provides water tightness between the inner cylinder portion 11 and the cylindrical portion 31 of the flow path partition member 3. In addition, due to the packing 84 provided on the rear surface of the in-tank protrusion 4 of the flow path partition member 3, watertightness between the in-tank protrusion 4 of the flow path partition member 3 and the flange portion 25 of the male screw member 2 is maintained. It has come to be illustrated.

  Further, since the inlets 62a and 62b of the pressure regulating channels 6a and 6b opened on the rear surface of the in-tank protruding portion 4 are arranged outside the packing 84 as described above, the pressure regulating channel inlets 62a and 62b. Is communicated (opened) into the bathtub via a gap between the rear surface of the in-tank protruding portion 4 and the flange portion 25 of the male screw member 2.

  A plurality of the lock recesses 26 and the locking grooves 27 of the male screw member 2 are provided along the circumferential direction, and the lock pin 56 of the flow path partition member 3 is provided in each of the lock recesses 26 and the locking grooves 27. And the latching protrusion 47 can be engaged now. Therefore, the flow path partition member 3 can be attached at a desired rotational position. In the present embodiment, the flow path partition member 3 is attached at a rotational position such that the two openings 42a and 42b are disposed on both lower sides.

  In the state where the flow path partition member 3 is assembled in this way, the inner flow path A is communicated with the first flow path 43a of the flow path partition member 3 through the first communication hole 41a of the flow path partition member 3. The outer channel B is communicated with the second channel 43 b of the channel partition member 3 through the second communication hole 41 b of the channel partition member 3. Accordingly, the hot water (water) supplied from the outdoor water heater to the first outer pipe connection portion 1a of the outside-tubing attachment member 1 passes through the inner flow path A and the first flow path 43a, and passes through the first opening 42a into the bathtub. It is designed to be discharged. Furthermore, the hot water (water) supplied from the outdoor water heater to the second outer pipe connecting portion 1b of the outside mounting member 1 passes through the outer flow path B and the second flow path 43b and enters the bathtub from the second opening 42. It is designed to be discharged.

  In the hot water supply port adapter according to the present embodiment, the one constituted by the outside-tubing attachment member 1, the male screw member 2 and the flow path partition member 3, in other words, the state in which the cover member 9 is not attached is referred to as an adapter main body.

  As shown in FIGS. 4, 6, 7, and 11, the cover member 9 includes a filter member 91, an annular mounting member 92, and first and second peripheral surface filter parts 93 a and 93 b.

  The filter member 91 includes a circular front wall and an outer peripheral wall provided on the outer peripheral edge on the rear surface side of the front wall. The front wall of the filter member 91 is provided with a front filter portion made up of a large number of small holes, and the lower side of the outer peripheral wall corresponds to the first and second openings 42a and 42b of the flow path partition member 3. And the 1st, 2nd opening 91a, 91b is provided.

  The annular mounting member 92 has an outer peripheral wall having a double wall structure, and is configured to be fixed in a state of being disposed along the inner surface of the outer peripheral wall of the filter member 91. Further, the annular mounting member 92 is provided with two openings 92a and 92b corresponding to the openings 91a and 91b of the filter member 91, respectively. Further, a plurality of locking projections 94 are provided on the inner peripheral surface of the annular mounting member 92 at intervals in the circumferential direction corresponding to the locking grooves 48 of the flow path partition member 3 (FIG. 4 and the like). reference).

  The peripheral surface filter parts 93a and 93b have curved strip shapes, and are inserted between the double walls constituting the outer peripheral wall of the annular mounting member 92, so that the openings 92a and 92b of the annular mounting member 92 are inserted into the openings 92a and 92b. It can be attached. The peripheral surface filter parts 93a and 93b are formed in a filter portion in which regions corresponding to the openings 92a and 92b of the annular mounting member 92 are constituted by a mesh sheet or a large number of small holes. The peripheral surface filter parts 93a and 93b are configured to be attachable to and detachable from the annular mounting member 92. In the present embodiment, as will be described later, of the two peripheral surface filter parts 93a and 93b, an opening on the discharge side. The peripheral filter part corresponding to is removed.

  In order to assemble the cover member 9 having this configuration to the adapter body, the outer peripheral wall of the cover member 9 is fitted to the in-tank protruding portion 4 of the flow path partition member 3 from the front side while the cover member 9 is locked. The protrusion 94 is inserted into the locking groove 48 on the side of the in-tank protrusion 4 from the front side. Thereafter, the cover member 9 is twisted in the circumferential direction by a small amount to cause the locking projection 94 of the cover member 9 to enter the back end position displaced in the circumferential direction from the inlet side of the locking groove 48. As a result, the cover member 9 is assembled in a state in which it cannot be prevented from coming forward with respect to the protruding portion 4 in the tank. If necessary, the cover member 9 is twisted in the opposite direction to move the locking protrusion 94 of the cover member 9 from the back end position of the locking groove 48 to the inlet side. 9 can be removed from the protrusion 4 in the tank.

  Needless to say, in a state where the cover member 9 is assembled to the adapter body, the openings 91a, 91b, 92a, 92b of the filter member 91 and the annular mounting member 92 in the cover member 9 are the first in the flow path partition member 3 of the adapter body. 1 and the second openings 42a and 42b, respectively.

  As described above, the hot water inlet adapter of the present embodiment configured as described above is connected to the two outer pipe connection portions 1a and 1b in the outside-tubing attachment member 1 when connecting the pipe to the outdoor water heater. It is a non-polar type that can be used with either the forward pipe or the return pipe connected to the outdoor water heater. For example, in the state where the outgoing pipe is connected to the first outer pipe connecting portion 1a and the return pipe is connected to the second outer pipe connecting portion 1b, when the reheating process is performed, the hot water supplied from the water heater is connected to the outgoing pipe and the first outer pipe. 1 is introduced into the inner flow path A through the outer pipe connection portion 1 a, and the hot water passes through the inner flow path A and the first flow path 43 a of the flow path partition member 3, thereby opening the first opening of the flow path partition member 3. 42a and the first openings 91a and 92a of the cover member 9 are supplied into the bathtub.

  On the suction side, the return pipe and the outer flow path B are set to a negative pressure by the suction force of the water heater, so the second flow path 43b of the flow path partition member 3 also has a negative pressure. Accordingly, hot water (water) in the bathtub is sucked into the second flow path 43b of the flow path partition member 3 through the second openings 91b and 92b of the cover member 9 and the second opening 42b of the flow path partition member 3. In addition, the hot water is returned to the water heater through the outer flow path B and the return pipe.

  Therefore, when the pipes are connected in this way, the second opening 42b is configured as one opening (suction port) on the suction side, and the second flow path 43b is configured as one flow path (suction flow path) on the suction side. ).

  On the other hand, when the reheating process is performed in a state where the outgoing pipe is connected to the second outer pipe connecting portion 1b and the return pipe is connected to the first outer pipe connecting portion 1a, the circulation is performed in the opposite direction to the above. That is, hot water from the water heater is supplied into the bathtub through the forward pipe, the second outer pipe connecting portion 1b, the outer flow path B, the second flow path 43b, and the second openings 42b, 91b, and 92b. The hot water inside is returned to the water heater through the first openings 91a, 92a, 42a, the first flow path 43a, the inner flow path A, the first outer pipe connecting portion 1a, and the return pipe.

  Therefore, when the pipes are connected in this way, the first opening 42a is configured as one opening (suction port) on the suction side, and the first flow path 43a is configured as one flow path (suction flow path) on the suction side. ).

  In the present embodiment, in the cover member 9, among the first and second peripheral surface filter components 93 a and 93 b, only the peripheral surface filter component that is disposed on the suction side during reheating is left and disposed on the discharge side. The peripheral filter component is removed. For example, when the first openings 91a and 92a of the cover member 9 are on the discharge side, the first peripheral filter component 93a corresponding to the openings 91a and 92a is removed, and the second openings 91b and 92b are on the discharge side. In this case, the second peripheral filter part 93b is removed. Therefore, in this embodiment, since there is no obstacle in the opening on the discharge side and the flow resistance becomes small, hot water can be discharged into the bathtub efficiently and smoothly.

  According to the hot water supply adapter of the present embodiment configured as described above, since the pressure regulation flow paths 6a and 6b are provided, the opening 42a of the flow path partition member 3 is used when the cover member 9 is removed. 42b, even if the hair is sucked from the suction side opening, for example, the second opening (also referred to as "suction port") 42b, the hair can be easily extracted. That is, when the hair is sucked from the suction port 42b, the suction port 42b is blocked by the hair, and therefore temporarily in the second channel (also referred to as “suction channel”) 43b of the channel partition member 3. However, as the negative pressure increases, hot water in the bathtub is sucked in from the inlet 62b of the second pressure regulating channel 6b communicated with the suction channel 43b. The hot water is sucked into the suction channel 43b through the pressure regulation channel 6b. As a result, the negative pressure in the suction channel 43b is reduced and the suction force is also reduced, so that the hair sucked into the suction port 42b can be easily extracted with a weak force.

  Needless to say, even when the first opening 42a side of the flow path partition member 3 is a suction port, hot water is sucked from the first pressure regulation flow channel 6a when the hair is sucked from the suction port 42a. Thus, since the negative pressure is reduced, the hair can be easily extracted.

  By the way, like the conventional hot-water supply port adapter shown to patent document 2 (Unexamined-Japanese-Patent No. 2003-90628), a negative pressure reduction opening part is formed in the position adjacent to the peripheral surface suction port in the front surface of the protrusion part in a tank. In some cases, when the hair is sucked from the peripheral suction port, the negative pressure reducing opening may be blocked by the remaining other hair. If it does so, since the negative pressure of an internal suction channel cannot be reduced and suction power cannot be reduced, it may become difficult to extract hair. In addition, when the negative pressure reducing opening is formed on the suction channel as in the hot water supply adapter of Patent Document 2, the negative pressure reducing opening is blocked from the inside by the hair sucked from the peripheral suction port. In this case, the negative pressure cannot be reduced, and it may be more difficult to remove the hair.

  On the other hand, in this embodiment, since the inflow ports 62a and 62b of the pressure regulation flow paths 6a and 6b are arranged on the rear surface (back surface) of the in-tank protrusion 4 in the flow path partition member 3, the pressure regulation flow The road inflow ports 62a and 62b are concealed by the in-tank protrusion 4 and are spaced apart from the first and second openings 42a and 42b. For this reason, when the hair is sucked into the first or second opening 42a, 42b, the pressure regulating flow channel inlets 62a, 62b are not blocked by the other hair, and the hair is more reliably sucked. Negative pressure can be reduced.

  Furthermore, in this embodiment, since the suction flow path 43b and the pressure regulation flow path inlet 62b are connected via the pressure regulation flow path 6b, even if the hair is sucked from the suction port 42b, The pressure adjusting channel inlet 62b is not blocked from the inside. For this reason, when the hair is sucked in, the hot water is surely sucked in through the pressure adjusting flow path inlet 62b and the pressure adjusting flow path 6b, and the negative pressure can be more reliably reduced, and the hair can be easily and reliably removed. Can be extracted.

  Here, in the present embodiment, the outer diameter (diameter) of each small hole (small diameter through hole) constituting the inflow ports 62a and 62b of the pressure regulating channels 6a and 6b is set to 0.5 to 0.7 mm. good.

  Moreover, in the hot water supply adapter of this embodiment, since the peripheral surface filter component is arrange | positioned in the suction side among the peripheral surface filter components 93a and 93b in the cover member 9, in the state which attached the cover member, the suction side The hair is never sucked from the opening 42a or 42b. However, when the adapter installation worker apologizes and removes the peripheral surface filter part on the suction side, hot water is sucked from the pressure adjusting flow path 6a or 6b even if the hair is sucked from the opening 42a or 42b. Since the negative pressure is reduced, the hair can be easily extracted.

  Moreover, in this embodiment, since the lattice-like member 45 is provided in the vicinity of the suction port 42b in the suction flow path 43b in the in-tank protrusion 4, when the hair is sucked from the suction port 42b, more It can be extracted more reliably.

  That is, in the hot-water supply adapter of Patent Document 2 described above without the grid member 45, the hair sucked from the suction port is sucked to the back endlessly, and the hair is dumped in the complicated flow path at the back. It becomes very difficult to pull out the hair.

  On the other hand, in the present embodiment, the hair sucked from the suction port 42b can be reliably prevented from being caught by the lattice member 45 and being drawn into the back. For this reason, the hair can be prevented from being entangled in the form of dumplings at the back, and the hair can be more reliably extracted.

  In addition, the hot water supply adapter of this embodiment performs hot water beam by a double conveyance system. That is, at the time of hot water supply, hot water is supplied from the water heater to both the return pipe and the return pipe, and the hot water passes through the inner and outer flow paths A and B of the adapter body, and the first and second flow paths 43a and 43b. It is supplied into the bathtub from both the first and second openings 42a and 42b.

Second Embodiment
12-14 is a figure which shows the hot-water supply port adapter which is 2nd Embodiment of this invention. As shown in these drawings, the hot water supply adapter of the second embodiment is different from the hot water supply adapter of the first embodiment in the configuration of the pressure regulating flow paths 6a and 6b in the flow path partition member 3.

  That is, in the present embodiment, the first and second pressure regulating flow paths 6a and 6b extending from the intermediate section to the side (outer diameter direction) are provided on the upper side of the in-tank protrusion 4 of the flow path partition member 3. ing. The inner end sides of the first and second pressure regulating channels 6a and 6b are communicated with the first and second channels 43a and 43b, and the communicating portions are configured as outlets 61a and 61b. Furthermore, first and second inflow ports 62a and 62b are formed on the outer peripheral wall 42 of the in-tank projecting portion 4 corresponding to the outer end positions of the pressure regulating flow paths 6a and 6b. The pressure regulation flow paths 6a and 6b are opened in the bathtub through the inflow ports 62a and 62b.

  Further, the pressure adjusting flow path inlets 62a and 62b are constituted by a plurality of slits having a "<" shape or a "L" shape in a front sectional view so that the inflow direction of hot water is bent halfway. Foreign matter such as inner hair is prevented from being sucked from the pressure adjusting flow path inlets 62a and 62b.

  In the hot water supply adapter according to the second embodiment, since the other configuration is substantially the same as the hot water supply adapter according to the first embodiment, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted. To do.

  In the hot water supply port adapter according to the second embodiment, similar effects can be obtained as in the first embodiment.

  Furthermore, even when this hot water supply adapter is used with the cover member 9 removed, even if the hair is sucked from the opening on the suction side, for example, the second opening (suction port) 42b, the hair can be easily removed. Can be extracted. That is, when the hair is sucked from the suction port 42b, the suction port 42b is blocked by the hair, so that the negative pressure in the second flow path (suction flow path) 43b of the flow path partition member 3 is temporarily reduced. Although the suction force increases and the suction force increases, the hot water in the bathtub is sucked from the inlet 62b of the second pressure regulation flow path 6b communicated with the suction flow path 43b as the negative pressure rises, and the hot water is adjusted. It is sucked into the suction channel 43b through the pressure channel 6b. Thereby, the negative pressure in the suction channel 43b is reduced and the suction force is also reduced, so that the hair sucked into the suction port 42b can be easily extracted. Needless to say, even when the first opening 42a side of the flow path partition member 3 is a suction port, hot water is sucked from the first pressure regulation flow channel 6a when the hair is sucked from the suction port 42a. Thus, since the negative pressure is reduced, the hair can be easily extracted.

  In addition, in the second embodiment, the inlets 62a and 62b of the pressure regulating flow paths 6a and 6b are formed at the upper portions on both sides of the outer peripheral wall 42 of the in-tank protruding portion 4, and therefore the first or second opening 42a. , 42b, the inlets 62a, 62b of the pressure regulating flow paths 6a, 6b are hardly clogged by the remaining other hair or the like, so that the negative suction can be more reliably performed. The pressure can be reduced, and the hair can be easily extracted.

  Here, in the second embodiment, it is preferable to set the width of each slit constituting the inflow ports 62a and 62b of the pressure adjusting channels 6a and 6b to 0.5 to 0.7 mm. That is, by forming the pressure regulating channels 6a and 6b within such a specific range, the above-described negative pressure reduction effect during hair suction can be further improved while reliably preventing foreign matter from entering from the inflow ports 62a and 62b. You can definitely get it.

  In the second embodiment, when the cover member 9 is attached to the in-tank projecting portion 4, the cover member 9 closes the pressure adjusting flow path inlets 62a and 62b. As described in the embodiment, since the peripheral surface filter part 93a or 93b is disposed in one of the first and second openings 42a and 42b of the protruding portion 4 in the tank on the suction side, It is possible to reliably prevent the hair and the like from being sucked from the openings 42a and 42b.

  Further, in the second embodiment, the pressure regulating flow path inlets 62a and 62b are provided on the outer peripheral side surface of the in-tank protruding portion 4, so that the pressure regulating flow path inlet 62a is removed when the cover member 9 is removed. , 62b can be exposed. For this reason, the pressure regulating flow channel inlets 62a and 62b can be easily cleaned not only by the contractor but also by the user simply by removing the cover member 9, and the eyes of the pressure regulating flow channel inlets 62a and 62b can be obtained. Problems such as clogging can be reliably prevented.

<Third Embodiment>
15-18 is a figure which shows the hot-water supply port adapter which is 3rd Embodiment of this invention. As shown in these drawings, in the hot water supply adapter according to the third embodiment, the front wall 5 of the flow path partition member 3 is provided with inflow ports 62a and 62b corresponding to the pressure regulation flow paths 6a and 6b. . The inflow ports 62a and 62b are configured by a large number of small diameter through holes (small holes) as in the first embodiment. The outer diameter (diameter) of each small hole (small diameter through hole) constituting the inflow ports 62a and 62b is preferably set to 0.5 to 0.7 mm as in the first embodiment.

  Since other configurations are substantially the same as those of the first embodiment, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

  In the hot-water supply adapter according to the third embodiment, similar effects can be obtained as in the above-described embodiment.

  For example, when the hot water supply adapter is used with the cover member 9 removed, even if the hair is sucked in from the opening on the suction side, for example, the second opening (suction port) 42b, the hair can be easily removed. Can be extracted. That is, when the hair is sucked from the suction port 42b, the suction port 42b is blocked by the hair, so that the negative pressure in the second flow path (suction flow path) 43b of the flow path partition member 3 is temporarily reduced. Although the suction force increases and the suction force increases, the hot water in the bathtub is sucked from the inlet 62b of the second pressure regulation flow path 6b communicated with the suction flow path 43b as the negative pressure rises, and the hot water is adjusted. It is sucked into the suction channel 43b through the pressure channel 6b. Thereby, the negative pressure in the suction channel 43b is reduced and the suction force is also reduced, so that the hair sucked into the suction port 42b can be easily extracted. Needless to say, even when the first opening 42a side of the flow path partition member 3 is a suction port, hot water is sucked from the first pressure regulation flow channel 6a when the hair is sucked from the suction port 42a. Thus, since the negative pressure is reduced, the hair can be easily extracted.

  Moreover, the hot water supply adapter according to the third embodiment is formed with the pressure adjusting flow path inlets 62a and 62b on the front surface (front wall 5) of the in-tank protrusion 4, but the inlets 62a and 62b, Since the two flow paths 43a and 43b communicate with each other through the pressure regulation flow paths 6a and 6b, the inflow ports 62a and 62b can be disposed away from the first and second openings (suction ports) 42a and 42b. it can. For this reason, when the hair is sucked into the first or second opening 42a, 42b, it is possible to prevent the inlets 62a, 62b of the pressure adjusting channels 6a, 6b from being blocked by the remaining other hair, etc. At the time of suction, the negative pressure can be more reliably reduced and the hair can be easily extracted.

  Further, in the third embodiment, similarly to the second embodiment, when the cover member 9 is removed, the pressure regulating flow channel inlets 62a and 62b can be exposed, so that only the cover member 9 is removed. Thus, the pressure regulation flow path inlets 62a and 62b can be easily cleaned, and problems such as clogging of the pressure regulation flow path inlets 62a and 62b can be reliably prevented.

  In the third embodiment, as described above, when the cover member 9 is attached to the in-tank protruding portion 4, the pressure regulating flow channel inlets 62a and 62b are blocked by the cover member 9. As described in the second embodiment, the peripheral filter component 93a or 93b is disposed in one of the first and second openings 42a and 42b of the in-tank protrusion 4 on the suction side. Therefore, the hair and the like can be reliably prevented from being sucked through the openings 42a and 42b.

<Modification>
In addition, in the hot water supply adapter of the above embodiment, at the time of hot water, a double-conveying type that supplies hot water into the bathtub with both the forward pipe and the return pipe is used, but the present invention is not limited thereto. The present invention can also be applied to a single-conveying hot water inlet adapter that supplies hot water into the bathtub only from the forward pipe during hot water filling.

  Moreover, in the said embodiment, although demonstrated taking the case of the nonpolar type hot water supply adapter, it is not restricted only to it, In this invention, it can apply also to a polar type hot water supply adapter.

  Further, in the above embodiment, the first and second pressure regulating channels 6a and 6b are formed corresponding to the first and second channels 43a and 43b, but the present invention is not limited to this. However, in the present invention, a pressure regulation channel is formed only in at least the suction side channel (second channel 43b in the embodiment), and a pressure regulation channel (first channel 43a) is formed in the discharge side channel (first channel 43a). The pressure regulation flow path inlet) may not be formed.

  However, as in the present embodiment, in the case of a non-polar type hot water supply adapter, which of the first and second openings 42a and 42b (first and second flow paths 43a and 43b) is on the suction side? Since it is not known until it is assembled in the bathtub, it is preferable to provide a pressure adjusting flow path or the like in both the first and second flow paths 43a and 43b.

  Moreover, in this invention, while providing the 1st pressure regulation flow path inflow port 62a in any one surface among the front surface in a tank protrusion part, a back surface, and an outer peripheral side surface, it is 2nd in any one of the remaining two surfaces. A pressure channel inlet 62b may be provided. For example, the first pressure regulation channel inlet 62a may be provided on the front surface, and the second pressure regulation channel inlet 62b may be provided on the outer peripheral side surface or the back surface.

<Example 1>
Evaluation test on the suction of hair to the hot water supply adapter subject to the regulation of the Consumer Product Safety Act issued by the Ministry of Economy, Trade and Industry using the hot water supply adapter of the first embodiment shown in FIGS. C9335-60).

  In this case, with the cover member removed, the evaluation test was performed 100 times with the second opening 42b (second flow path 43b) disposed on the left side as viewed in FIG. . For each test, the pulling force (Newton [N]) was measured, and the measured pulling force value was divided into 4N to 1N sections, and the frequency (number of times) for each section was determined. The results are shown in Table 1 below.

  As can be understood from Table 1, all the pulling forces surely cleared the acceptance criteria of less than 20N.

<Example 2>
A similar evaluation test was performed using the hot water supply adapter of the first embodiment. In this case, with the cover member removed, the side of the first opening 42a (first flow path 43a) disposed on the right side in FIG. The results are shown in Table 2 below.

  As can be understood from Table 2, all the pulling forces were less than 20N.

<Example 3>
A similar evaluation test was performed using the hot water supply port adapter of the second embodiment shown in FIGS. In this case, with the cover member removed, the side of the second opening 42b (second flow path 43b) disposed on the left side in FIG. Then, the pulling force for each test was measured, and the measured pulling force value was divided into sections from 4.5N to 1N, and the frequency for each section was determined. The results are shown in Table 3 below.

  As can be seen from Table 3, the pulling forces were all less than 20N.

<Example 4>
The same evaluation test as in Example 3 was performed using the hot water supply adapter of the second embodiment. In this case, with the cover member removed, the first opening 42a (first flow path 43a) side disposed on the right side in FIG. The results are shown in Table 3 below.

  As can be understood from Table 4, the pulling forces were all less than 20N.

<Example 5>
An evaluation test was performed in the same manner except that the hot water supply adapter of the third embodiment shown in FIGS. In this case, with the cover member removed, the side of the second opening 42b (second flow path 43b) disposed on the left side in FIG. Then, the pulling force for each test was measured, and the measured pulling force values were divided into 4N or less, 4N to 6N, 6N to 8N, and 8N to 10N sections, and the frequency for each section was determined. . The results are shown in Table 5 below.

  As can be understood from Table 5, all the pulling forces were less than 8N.

<Example 6>
The same evaluation test as in Example 5 was performed using the hot water supply port adapter of the third embodiment. In this case, with the cover member removed, the first opening 42a (first flow path 43a) side arranged on the right side in FIG. The results are shown in Table 6 below.

  As can be seen from Table 6, the pulling forces were all less than 10N.

  The bathtub hot-water supply port adapter according to the present invention can be used as a hot-water supply fitting for a general household bathtub, for example.

4: In-tank protrusion 41: Rear wall (rear surface, outer surface)
42: outer peripheral wall (outer peripheral side, outer surface)
42a, 42b: 1st, 2nd opening 43a, 43b: 1st, 2nd flow path 45: Lattice-like member 5: Front wall (front surface, outer surface)
6a, 6b: 1st, 2nd pressure regulation flow paths 62a, 62b: Inlet 9: Cover members 91a, 91b, 92a, 92b: Openings 93a, 93b: Circumferential filter parts W: Bathtub side walls

Claims (9)

The tank inner wall surface is provided with an in-tank protruding portion arranged so as to protrude into the bathtub, and the first and second openings are provided on the outer peripheral side surface of the in-tank protruding portion, and corresponds to the first and second openings. And the 1st, 2nd flow path is provided inside the said protrusion part in a tank, The hot water in the bathtub inhaled from one opening among the said 1st, 2nd opening is said 1st, 2nd. A hot water adapter for a bathtub that is drawn into one of the flow paths corresponding to the one of the flow paths and flows out of the bathtub,
A pressure regulating channel communicated with the one channel is provided inside the protruding portion in the tank, and an inlet of the pressure adjusting channel is provided on an outer surface of the protruding portion in the tank,
When at least a part of the one opening is closed during the suction of hot water, hot water in the bathtub is sucked in from the inlet of the pressure regulating flow path, and the hot water passes through the pressure regulating flow path, Configured to flow into the flow path ,
A hot water inlet adapter for a bathtub , wherein the inlet of the pressure adjusting flow path is provided on the rear surface of the protruding portion in the tank . Inlet of said timing fluid path, bathtub hot water supply port adapter according to configured claim 1 by a number of small holes formed in an outer wall of the tank protrusion. The hot water inlet adapter for bathtubs according to claim 2 , wherein an outer diameter of the small hole is set to 0.5 to 0.7 mm. Bath hot water supply port adapter according to configured claim 1 by a plurality of slits inlet of said timing fluid path, which is formed on the outer wall of the tank protrusion. The hot water inlet adapter for bathtubs according to claim 4 , wherein the slit is formed in a shape of a "<" that bends in the middle. The hot water inlet adapter for bathtubs according to claim 4 or 5 , wherein a width of the slit is set to 0.5 to 0.7 mm. A cover member for covering the protruding portion in the tank is provided detachably on the protruding portion in the tank,
Corresponding to the first and second openings of the protruding portion in the tank, the cover member is provided with first and second openings, and filter parts are detachably provided in the openings on the cover member side. Item 7. The hot water outlet adapter for bathtubs according to any one of items 1 to 6 . First the tank protrusion, said in the second flow path first, the second opening near claimed in any one of claims 1 to 7, the lattice-like member for preventing provided a foreign matter intrusion Hot water adapter for bathtub The tank inner wall surface is provided with an in-tank protruding portion arranged so as to protrude into the bathtub, and the first and second openings are provided on the outer peripheral side surface of the in-tank protruding portion, and corresponds to the first and second openings. And the 1st, 2nd flow path is provided inside the said protrusion part in a tank, The hot water in the bathtub inhaled from one opening among the said 1st, 2nd opening is said 1st, 2nd. A hot water adapter for a bathtub that is drawn into one of the flow paths corresponding to the one of the flow paths and flows out of the bathtub,
The first and second pressure regulating channels communicated with the first and second channels are respectively provided inside the tank protrusions, and the respective inlets of the first and second pressure regulating channels are provided, Provided on the outer surface of the protruding portion in the tank,
When at least a part of the one opening is closed during the suction of hot water, from the inlet of one of the pressure regulating channels corresponding to the one of the first and second regulating channels, the inside of the bathtub Hot water is sucked in, and the hot water is configured to flow through one pressure regulation channel and flow into the one channel ,
A hot water inlet adapter for a bathtub , wherein the inlet of the pressure adjusting flow path is provided on the rear surface of the protruding portion in the tank .

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