JP5890658B2 - Bathtub adapter - Google Patents

Description

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

  The hot water supply adapter attached to the side wall of the bathtub includes a flow path partition member provided with a flow path for hot water therein. The front part of this flow path partition member is provided with a disk-shaped in-tank protruding part arranged in a manner protruding from the inner wall surface of the bathtub, and two openings are provided in this in-tank protruding part. . And in the hot-water supply adapter called a non-polar type without a valve as shown in Patent Documents 1 and 2, hot water in the bathtub is sucked from one of the two openings (suction inlet) during reheating. While being returned to the outdoor water heater, hot water from the water heater is supplied into the bathtub from the other opening (discharge port).

Japanese Patent No. 4774659 JP 2003-90628 A

  Foreign substances such as scale may be generated from the water heater or the outer pipe connected to the hot water inlet adapter as described above. However, the foreign substances may be opened (discharged) on the discharge side of the hot water inlet adapter when reheating. Discharge from the outlet. For this reason, when using the hot water supply adapter with the filter member (cover member) attached, foreign matter such as scale discharged from the discharge port during hot water adheres to the inside of the filter member, and the discharge port in the filter member Clogging occurs at the part corresponding to. When the discharge port is closed due to such clogging of dust, it is difficult to discharge hot water from the discharge port, and there is a problem that the hot water cannot be sufficiently supplied into the bathtub.

  The present invention has been made in view of the above problems, and provides a hot water inlet adapter for a bathtub that can reliably supply hot water into the bathtub even when the opening on the discharge side is blocked by dust clogging or the like The purpose is to do.

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

[1] The tank inner wall surface is provided with an in-tank projecting portion disposed so as to project into the bathtub, and first and second openings are provided on both sides of the peripheral side wall of the in-tank projecting portion. Corresponding to the second opening, the first and second flow paths are provided inside the protruding portion in the tank, and the hot water in the bathtub sucked from one of the first and second openings is The hot water supplied from the outside of the bathtub to the other channel is discharged into the bathtub from the other opening while being sucked into one of the first and second channels and out of the bathtub. A hot water adapter for a bathtub,
The first flow path and the discharge flow path of the second flow path are opened forward at least at the edge of the discharge side opening of the first and second openings in the front wall of the protruding portion in the tank. A hot water outlet adapter for a bathtub, characterized in that a front opening on the discharge side is provided.

  [2] The bathtub opening according to the preceding item 1, wherein a suction-side front opening portion that opens the inside of the suction-side flow path forward is provided at an edge of the suction-side opening in the front wall of the protruding portion in the tank. Water heater adapter.

[3] A filter member having a front wall that covers the front of the in-tank protrusion and a peripheral side wall that covers a peripheral side surface of the in-tank protrusion is provided,
The hot water inlet adapter for bathtubs according to the preceding item 1 or 2, wherein the front opening portion is disposed to face a corner portion between a front wall and a peripheral side wall of the filter member.

  [4] The bathtub hot-water supply adapter according to item 3, wherein a blindfold that blocks passage of hot water is provided at a position corresponding to the front opening of the front wall of the filter member.

  [5] A partition wall that divides the inside of the filter member into a region where the first opening is disposed and a region where the second opening is disposed is provided in front of the front wall of the protruding portion in the tank. 5. The hot water outlet adapter for bathtubs according to the preceding item 3 or 4.

  In the present invention, the following means can be employed.

[6] The tank inner wall surface is provided with an in-tank protruding portion disposed so as to protrude into the bathtub, and the first and second openings are provided on the outer wall of the in-tank protruding portion, and the first and second openings thereof. In response, the first and second flow paths are provided inside the protruding portion in the tank, and the hot water in the bathtub sucked from one of the first and second openings is the first and second flow paths. Hot water for a bathtub that is sucked into one of the second channels and flows out of the bathtub, and hot water supplied from the outside of the bathtub to the other channel is discharged from the other opening into the bathtub. Mouth adapter,
A strainer is provided in the vicinity of the suction side opening in at least the suction side channel of the first and second channels,
The strainer protrudes toward one of the two opposing surfaces facing each other on the inner peripheral surface of the flow path toward the other facing surface, and at predetermined intervals along the direction crossing the flow path. A plurality of one protrusions provided, and a plurality of other protrusions that protrude toward the one opposite surface side on the other opposite surface, and provided respectively corresponding to each of the plurality of one protrusions, With
A hot water inlet adapter for a bathtub, wherein a gap functioning as a water passage portion of the strainer is formed between the plurality of one protrusions and the plurality of other protrusions.

[7] The tank inner wall surface is provided with an in-tank protruding portion disposed so as to protrude into the bathtub, and first and second openings are provided on both sides of the peripheral side wall of the in-tank protruding portion. Corresponding to the second opening, the first and second flow paths are provided inside the protruding portion in the tank, and the hot water in the bathtub sucked from one of the first and second openings is The hot water supplied from the outside of the bathtub to the other channel is discharged into the bathtub from the other opening while being sucked into one of the first and second channels and out of the bathtub. A hot water adapter for a bathtub,
Between the front side of the front wall in the tank protrusion and the filter member, an auxiliary circuit on the discharge side having one end and the other end is provided,
One end of the discharge side auxiliary circuit communicates with at least the discharge side of the first and second channels, and the other end of the first and second openings is near the discharge side of the opening. Open to the outside of the tank protrusion,
When the other end of the discharge-side auxiliary circuit is opened in substantially the same direction as the discharge-side opening, and when the discharge-side opening is closed, hot water is discharged from the discharge-side flow path. A hot water outlet adapter for a bathtub characterized by being discharged from the other end of the circuit through the auxiliary circuit on the side.

  According to the hot water inlet adapter for bathtubs of the invention [1], when the opening (discharge port) on the discharge side is blocked by dust clogging or the like of the filter member, it becomes difficult to discharge hot water. Since hot water in the road is discharged from the front opening, hot water can be reliably supplied into the bathtub.

  According to the hot water inlet adapter for bathtubs of the invention [2], the opening (suction port) on the suction side is closed because the front opening is also formed on the opening (suction port) side on the suction side. Even if it is a case, the hot water in a tank can be sucked in via a front opening part. Moreover, since hot water can be sucked in from the front opening and hot water can be discharged from the discharge port to the side, ideal hot water circulation in which hot water is sucked in from the front and discharged from the side is performed. Can do.

  According to the hot water outlet adapter for a bathtub of the invention [3], the hot water discharged from the front opening portion passes through the corner portion of the filter member and is discharged obliquely to the side. Convection so as to wrap around greatly, and a sufficient stirring effect can be obtained.

  According to the hot water outlet adapter for bathtubs of the invention [4], the hot water discharged from the front opening portion is blocked by the blindfolded portion of the filter member and is not discharged forward, but more reliably discharged obliquely to the side. Therefore, the above stirring effect can be further improved.

  According to the hot water inlet adapter for bathtubs of the invention [5], since the inside of the filter member is divided into the discharge side and the suction side by the partition wall, the hot water discharged from the discharge opening and the front open part on the discharge side is divided. Even if a part of the convection is generated inside the filter member, it is possible to reliably prevent the problem that the hot water is sucked from the suction port or the like.

FIG. 1 is a side cross-sectional view showing a hot water inlet adapter for bathtubs according to an embodiment of the present invention. FIG. 2 is an exploded perspective view showing the hot water supply adapter according to the embodiment. FIG. 3 is an enlarged perspective view showing a part of the male screw member in the hot water supply port adapter of the embodiment. FIG. 4 is a side cross-sectional view showing the flow path partition member of the hot water supply adapter in the embodiment with the filter attached. FIG. 5A is a front view showing the flow path partition member of the embodiment in a state where the front lid is removed. FIG. 5B is a side view showing the flow path partition member of the embodiment in a state where the front lid is removed. FIG. 5C is a side cross-sectional view showing the flow path partition member of the embodiment in a state where the front lid is removed. FIG. 5D is a bottom view showing the flow path partition member of the embodiment in a state where the front lid is removed. FIG. 6 is a rear view showing the flow path partition member of the embodiment. FIG. 7A is a front view showing a front lid of the flow path partition member in the embodiment. FIG. 7B is a back view showing the front lid of the flow path partition member in the embodiment. FIG. 8A is an enlarged side cross-sectional view of the periphery of the opening of the hot water supply adapter according to the embodiment. FIG. 8B is a side sectional view for explaining the flow of hot water in the hot water supply adapter according to the embodiment. FIG. 9 is a front view for explaining the strainer in the hot water supply adapter according to the embodiment. FIG. 10A is a view of the strainer in the hot water supply adapter according to the embodiment as seen from the discharge direction. Drawing 10B is a figure seen from the discharge direction in the state where the strainer in the hot-water supply adapter of an embodiment was disassembled. FIG. 11 is a view showing one strainer projection of the hot water supply adapter according to the embodiment, where FIG. 11 (a) is a front view, FIG. 11 (b) is a bottom view, and FIG. 11 (c) is a side view. FIG. 11 is a view showing the other projection of the strainer in the hot water supply adapter according to the embodiment, where FIG. 11 (a) is a front view, FIG. 11 (b) is a bottom view, and FIG. 11 (c) is a side view. Drawing 13A is a front view showing a filter member in a hot-water supply adapter of an embodiment. FIG. 13B is a rear view showing the filter member in the hot water supply adapter of the embodiment.

  1 and 2 are views showing a hot water inlet adapter for bathtubs according to an 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 outlet adapter sucks hot water (water) in the bathtub and sends it to the outdoor water heater, where it is reheated. In addition, it is possible to perform 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. Further, the hot water supply adapter is a valveless type in which a flow control valve for controlling the flow of hot water such as a backflow prevention valve is not provided.

  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 filter member 9 as a cover member as basic components. In the description of the present specification, the inner side (left side in FIG. 1) with respect to the bathtub along the axial direction of the hot water supply adapter is defined as “front side” or “front side”, and the outer side with respect to the bathtub (FIG. 1). The right side) will be described as “rear side” or “back side”.

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

  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 screwing and fixing the male screw member 2 is engraved on the inner peripheral surface of the front portion of the outer cylinder portion 12.

  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 and 2, 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 formed in 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.

  As shown in FIGS. 2 and 3, a plurality of lock recesses 26 are formed on the front side of the flange portion 25 at predetermined intervals along the circumferential direction.

  Further, a plurality of locking grooves 27 are formed in the outer peripheral edge portion 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. 4 to 6, the flow path partition member 3 includes an elongated cylindrical portion 31 extending in the axial direction (front-rear direction), and a substantially disc-shaped tank provided at the front end portion of the cylindrical portion 31. And an inner 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 rear wall 41 and the front side outer periphery of the rear wall 41 in a front view. A peripheral side wall 42 and a front lid 5 as a front wall for closing a required portion of the front surface are provided.

  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.

  A first communication hole 41 a is formed in the rear wall 41 of the in-tank protruding portion 4 corresponding to the cylindrical portion 31, and an arc-shaped second communication hole 41 b corresponding to the side of the cylindrical portion 31. Is formed. Further, first and second openings 42 a and 42 b are formed on both lower sides of the peripheral side wall 42.

  As shown in FIG. 5A and the like, 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 flows independent from each other in the in-tank protrusion 4. Paths 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, a lock pin mounting portion 44 is formed at the center upper portion on the front side of the rear wall 41 (see FIG. 5A and the like).

  Further, partition wall portions 45, 45 extending in the vertical direction are formed above and below the first and second flow paths 43 a, 43 b on the front side of the rear wall 41, excluding the portion of the lock pin mounting portion 44. .

  The partition wall portions 45, 45 are formed in cooperation with a later-described partition wall portion 55 provided on the front lid 5, so that a partition wall continuous in the vertical direction is formed on the front surface of the in-tank protruding portion 4. .

  On the other hand, as shown in FIGS. 5C and 6, a rear projecting edge 46 projecting rearward over the entire circumference is provided at the rear end of the peripheral side wall 42 of the in-tank projecting section 4. Locking projections 47 are provided at several locations on the inner peripheral side of 46 at intervals in the circumferential direction.

  A plurality of locking grooves 48 are formed on the outer peripheral side surface of the peripheral side wall 42 in 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). It is formed in a substantially L shape in the state seen from (direction).

  As shown in FIGS. 7A and 7B, the front lid 5 is formed in a substantially mountain shape in a front view, and is attached so as to close the front side of the first and second flow paths 43a and 43b.

  As shown in FIG. 8A, both side edges of the front lid 5 are formed so as to be cut out, and are arranged on the inner side (axial center side) than the peripheral edge of the rear wall 41. Thereby, the 1st, 2nd front opening part 49a, 49b which is open | released toward the front is formed in the outer side of the both-sides edge part of the front wall 5, and it opens to the front. Yes. Each of the front opening portions 49a and 49b communicates continuously with the corresponding openings 42a and 42b, and the front opening portions 49a and 49b and the openings 42a and 42b allow a wide range from the front side to the side (radially outward). An opening is formed to open.

  As shown in FIGS. 2, 5A, and 7A, a partition wall portion 55 that is continuous in the vertical direction is formed to protrude forward at an intermediate position in the left-right direction on the front surface of the front lid 5, and this partition wall portion A partition wall is formed as described above with 55 and the partition wall portion 45.

  As shown in FIGS. 5A and 9, on the rear surface of the inner peripheral surface in the vicinity of the openings of the first and second flow paths 43a and 43b, in other words, the rear wall 41 in the vicinity of the openings of the first and second flow paths 43a and 43b. A plurality of one projections 71 are formed on the front surface at predetermined intervals along the circumferential direction of the flow paths 43a and 43b. Each one protrusion 71 is formed so as to protrude forward in parallel with each other. As shown in FIG. 10B, the tooth tip is forward (see FIG. 10B) as a whole when viewed from the downstream side in the discharge direction. Is formed in a comb shape facing upward.

  Each one projection 71 has a projecting dimension so that each tip is positioned slightly closer to the front lid 5 than an intermediate position between the rear wall 41 and the front lid 5.

  Here, in the present embodiment, the front surface and the rear surface of the inner peripheral surfaces of the flow paths 43a and 43b are two opposing surfaces facing each other, the front surface constitutes the other opposing surface, and the rear surface is one opposing surface. Is configured. Further, the circumferential direction corresponds to a direction crossing the flow paths 43a and 43b.

  As shown in FIG. 11, a guide portion 72 is formed at the upstream end of the one projection 71 with respect to the discharge direction (outward direction) D1. The guide portion 72 is formed in a taper shape so that the width dimension gradually becomes narrower toward the upstream side with respect to the discharge direction D1 when the dimension in the circumferential direction (vertical direction in FIG. 11A) is the width dimension. The Further, the guide portion 72 is formed such that the projecting dimension (vertical direction in FIG. 11B) gradually decreases toward the upstream side with respect to the discharge direction D1.

  Further, the upstream end of the one protrusion 71 with respect to the suction direction (inward direction) D2 is formed on a flat surface 73 perpendicular to the suction direction D2.

  As shown in FIGS. 7B and 9, corresponding to each of the one protrusions 71, in other words, on the front surface of the inner peripheral surface in the vicinity of the openings of the first and second flow paths 43 a and 43 b, On the rear surface of the front lid 5 in the vicinity of the openings of the two flow paths 43a and 43b, a plurality of other protrusions 75 are formed at predetermined intervals along the circumferential direction. The other protrusions 75 are formed in parallel with each other so as to protrude rearward. As shown in FIG. 10B, the tooth tips are rearward as a whole when viewed from the downstream side in the discharge direction D1 (see FIG. 10B). 10B is formed in a comb shape facing downward.

  Each of the other protrusions 75 has a projecting dimension so that the tip of each other protrusion 75 is located slightly on the rear wall 41 side from the intermediate position between the rear wall 41 and the front lid 5. The other protrusions 75 are arranged between the plurality of one protrusions 71, and the other protrusions 75 and the one protrusions 71 are alternately arranged. Accordingly, a substantially rectangular wave (square wave) that functions as the water passing portion 70 of the strainer 7 in a state viewed from the downstream side in the discharge direction D1 (see FIG. 10A) between the plurality of one protrusions 71 and the plurality of other protrusions 75. ) -Shaped gaps are formed.

  Further, as shown in FIG. 12, a guide portion 76 is formed at an end portion on the upstream side with respect to the ejection direction (outward direction) D1 of the other protrusion 75. The guide portion 76 is formed in a tapered shape so that the width dimension gradually becomes narrower toward the upstream side with respect to the discharge direction D1 when the dimension in the circumferential direction (vertical direction in FIG. 12A) is the width dimension. The Further, the guide portion 76 is formed such that the projecting dimension (vertical direction in FIG. 12B) gradually decreases toward the upstream side with respect to the discharge direction D1.

  Further, the upstream end of the other protrusion 75 with respect to the suction direction (inward direction) D2 is formed on a flat surface 77 perpendicular to the suction direction D2.

  Here, in the present embodiment, the strainer 7 is constituted by the plurality of one protrusions 71 and the plurality of other protrusions 75.

  As shown in FIGS. 7A, 7B, and 8A, the front lid 5 has a plurality of first and second pressure release holes 51a and 51b arranged in the circumferential direction corresponding to the upstream side with respect to the discharge direction D1 of the other protrusion 75. It is formed with. The pressure release holes 51a and 51b are formed so as to penetrate the front lid 5 back and forth, and the pressure release holes 51a and 51b are connected to the first and second flow paths 43a and 43b in the flow path partition member 3. The communication between the front outer side of the flow path partition member 3 is established.

  Around the first and second pressure release holes 51a and 51b on the front surface of the front lid 5, ribs 53 and 53 are formed so as to protrude forward. The ribs 53 and 53 are formed so as to surround the pressure release holes 51 a and 51 b except for portions corresponding to the first and second openings 42 a and 42 b at both side edges of the front lid 5. As will be described later, the portions surrounded by the ribs 53 and 53 function as the first and second auxiliary circuits 50a and 50b, and the first and second pressure relief holes 51a and 51b serve as the auxiliary circuits 50a and 50b. It functions as one end port. Further, the auxiliary circuits 50a and 50b are opened laterally (outside in the radial direction) at portions where the ribs 53 and 53 are not formed, that is, at both side edges of the front lid 5, and the open portions are pressure-released. The other ends 52a and 52b of the circuits 50a and 50b are configured.

  Further, ribs that are continuous in the circumferential direction within the region where the pressure release holes 51a and 51b are formed on the upstream side (inside) with respect to the discharge direction D1 of the pressure release holes 51a and 51b on the back surface of the front lid 5. A flow restricting protrusion 54 is formed so as to protrude rearward.

  In order to assemble the flow path partition member 3 having the above configuration to the above-described tank outer attachment member 1 and the male screw member 2 assembled to the bathtub side wall W, as shown in FIGS. The rear protrusion 46 of the protruding portion 4 is externally fitted to the flange portion 25 of the male screw member 2 from the front side, and the locking projection 47 of the flow path partition member 3 is fitted to the locking groove 27 on the male screw member 2 side. Insert from the side. Subsequently, by slightly twisting the flow path partition member 3 in the circumferential direction, the locking protrusion 47 of the flow path partition member 3 is moved to the rear end position that is displaced in the circumferential direction from the inlet side of the locking groove 27. It is made to enter, and the flow path partition member 3 cannot be pulled out forward with respect to the male screw member 2.

  Thereafter, a lock pin (not shown) attached to the lock pin attachment portion 44 of the flow path partition member 3 is pushed in, and the tip of the lock pin is fitted into one 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. .

  In this assembled state, the O-ring 81 (see FIG. 1) provided on the outer peripheral surface of the cylindrical portion 31 in the flow path partition member 3 is used to connect the cylindrical portion 31 and the inner cylindrical portion 11 of the outside-tubing attachment member 1. The gasket 84 provided on the rear surface of the in-tank protrusion 4 of the flow path partition member 3 and the in-tank protrusion 4 of the flow path partition member 3 and the flange portion 25 of the male screw member 2 are sealed. The water tightness between the two is designed.

  As shown in FIGS. 2, 3, etc., a plurality of the lock recesses 26 and the locking grooves 27 of the male screw member 2 are provided along the circumferential direction. The lock pin 5 and the locking projection 47 of the flow path partition member 3 can be engaged. 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. To be discharged. Further, 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 channel B and the second channel 43b and enters the bathtub from the second opening 42b. It is designed to discharge.

  In the hot water supply port adapter of 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 filter member 9 is not attached is referred to as an adapter main body.

  As shown in FIGS. 13A, 13B, and the like, the filter member 9 includes a filter main body 90 formed of a metal thin plate press-formed product. The filter main body 90 has a cylindrical peripheral side wall 92 and a front wall 91 provided on the front side of the peripheral side wall 92.

  In the filter main body 90 of the present embodiment, the corner portion between the peripheral side wall 92 and the front wall 91 is formed in a relatively gentle arc shape having a large curvature radius. But in this invention, you may make it form the corner part between the surrounding side wall 92 of the filter main body 90, and the front wall 91 in a thing with a small curvature radius. Further, the corner portion between the peripheral side wall 92 of the filter body 90 and the front wall 91 may be formed in a chamfered inclined portion. Further, the filter main body 90 may be formed in a dome shape such as a semi-elliptical shape or a semi-elliptical shape in cross section.

  Further, the filter main body 90 has a water passage made up of a large number of small circular holes corresponding to almost the entire area of the front wall 91 excluding the blindfolds 93 and 93 to be described later and the area of the peripheral side wall 92 in the vicinity of the front wall 91. A hole 94 is formed.

  As shown in FIG. 8A, in the present embodiment, the blindfolded portions 93 and 93 correspond to the pressure release holes 51a and 51b of the flow path partition member 3, and are located below both sides of the front wall 91 of the filter body 90. Arranged along the circumferential direction. Needless to say, hot water cannot pass through the blindfolded portions 93, 93.

  As shown in FIG. 13B, the filter member 9 is configured by fixing an annular support frame 97 made of hard synthetic resin in a fitted state inside the peripheral side wall 92 of the filter main body 90.

  On the inner peripheral edge of the annular support frame 97 in the filter member 9, the locking protrusions 98 are formed so as to protrude inward at predetermined intervals in the circumferential direction corresponding to the locking grooves 48 of the flow path partition member 4. Has been.

  As shown in FIGS. 1 and 2, in order to assemble the filter member 9 having this configuration to the adapter body, the peripheral side wall 92 of the filter member 9 is removed from the front side of the in-tank protruding portion 4 of the flow path partition member 3. While fitting, the locking protrusion 98 of the filter member 9 is inserted from the front side into the locking groove 48 on the in-tank protruding portion 4 side. Thereafter, the filter member 9 is twisted by a small amount in the circumferential direction, so that the locking protrusion 98 of the filter member 9 enters the rear end position displaced in the circumferential direction from the inlet side of the locking groove 48. Thus, the filter member 9 is assembled in a state in which it cannot be prevented from coming forward with respect to the in-tank protruding portion 4.

  If necessary, the filter member 9 is twisted in the opposite direction to move the locking protrusion 98 of the filter member 9 from the rear end position of the locking groove 48 to the inlet side. 9 can be removed from the protrusion 4 in the tank.

  Here, in this embodiment, in a state where the filter member 9 is assembled to the adapter body, the in-tank protrusion 4 is formed by the partition wall portions 45 and 55 provided in the in-tank protrusion 4 of the flow path partition member 3. Between the front surface of the filter and the filter 9 (inside the filter member) is separated to the left and right. For this reason, as will be described later, the hot water discharged from one of the first and second openings 42a and 42b is directly sucked into the other opening through the inside of the filter member 9, so-called short circuit. The circuit can be surely prevented.

  Further, as shown in FIG. 8A, the first and second openings 42a and 42b of the flow path partition member 3 are disposed to face the peripheral side wall 92 of the filter member 9, and the first and second openings 42a and 42b. The first and second front opening portions 49 a and 49 b located on the front side of the filter member 9 are disposed so as to face a region from the blindfold portion 93 on the front wall 91 of the filter member 9 to the corner portion between the front wall 91 and the peripheral side wall 92. Has been. Thereby, the opening part which consists of the 1st, 2nd front opening part 49a, 49b and the 1st, 2nd opening 42a, 42b is arrange | positioned facing the area | region from the blindfold part 93 of the front wall 91 to the surrounding side wall 92. The

  The blind portions 93 and 93 of the filter member 9 are arranged corresponding to the pressure release holes 51 a and 51 b of the flow path partition member 3, and the ribs 53 and 50 provided on the front lid 5 of the flow path partition member 3 are arranged. 53, a gap is formed between the blindfolded portions 93 and 93 and the front lid 5 of the flow path partition member 3. The portion surrounded by the ribs 53 in the gap functions as the first and second auxiliary circuits 50a and 50b as described above. The inner sides of the first and second auxiliary circuits 50a and 50b are connected to the first and second flow paths 43a and 43b of the flow path partition member 3 through pressure release holes (pressure release circuit one end ports 51a and 51b). While being communicated, the outer side is opened to the outside through the outer peripheral edge portion of the front lid 5 through the portions where the ribs 53 and 53 are not formed (the other end of the pressure relief circuit) 52a and 52b. Accordingly, the first and second flow paths 43a and 43b of the flow path partition member 3 are opened to the outside of the adapter via the first and second auxiliary circuits 50a and 50b, respectively.

  Furthermore, in the present embodiment, the first and second auxiliary circuit other end ports 52a and 52b are open toward both sides, and are directed in substantially the same direction with respect to the corresponding first and second openings 42a and 42b. It is open. That is, the opening axes of the first and second auxiliary circuit other end ports 52a and 52b and the opening axes of the first and second openings 42a and 42b are arranged substantially in parallel.

  When the hot water supply adapter of the present embodiment configured as described above is connected to the outdoor water heater as described above, with respect to the two outer pipe connection portions 1a and 1b in the outside mounting member 1, This is a non-polar type that can be used with either the forward or 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 connecting portion 1a, and the hot water passes through the inner flow path A and the first flow path 43a of the flow path partition member 3 as indicated by an arrow F1 in FIG. 8B. Then, the water is supplied into the bathtub through the first opening 42 a of the flow path partition member 3 and the water passage hole 94 of the filter member 9.

  In FIG. 8B, in order to facilitate understanding of the invention, only the flow of hot water (water) is indicated by arrows F1 to F5, and the reference numerals of each part constituting the hot water supply adapter are as shown in FIG. 8A. .

  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. Therefore, as shown by an arrow F2 in FIG. 8B, the hot water (water) in the bathtub passes through the water passage hole 94 of the filter member 9 and the second opening 42b of the flow path partition member 3, and passes through the flow path partition member 3. And the hot water is returned to the hot water heater through the outer flow path B and the return pipe.

  Accordingly, when the pipes are connected in this way, the first opening 42a and the first flow path 43a function as a discharge-side opening (discharge port) and a discharge-side flow path (discharge flow path), and the second opening 42b and the second flow path 43b function as a suction side (suction side) opening (suction port, suction port) and a suction side flow path (suction flow path, suction flow path).

  Further, 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, the second opening 42b and the filter member 9, and the bathtub. The hot water inside is returned to the water heater through the filter member 9, 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 second opening 42b and the second flow path 43b function as a discharge side opening (discharge port) and a discharge side flow path (discharge flow path), and the first opening 42a and the second flow path 43a function as a suction side opening (suction port, suction port) and a suction side flow path (suction flow path, suction flow path).

  Further, in the present embodiment, at the time of hot water treatment, hot water is supplied from the water heater to both the outgoing pipe and the return pipe, and the hot water is supplied to the first and second outer pipe connecting portions 1a and 1b, the flow paths A and B, The first and second flow paths 43a and 43b, the first and second openings 42a and 42b, and the filter member 9 are supplied into the bathtub.

  According to the hot water supply port adapter of the present embodiment configured as described above, the plurality of one protrusions 71 and the plurality of other protrusions 75 arranged alternately in the openings 42a and 42b of the flow path partition member 3 have a rectangular wave shape. Since the strainer 7 having the gap (water passage portion 70) is formed, when the filter member 9 is used with the filter member 9 removed, the suction side opening of the openings 42a and 42b of the flow path partition member 3, for example, the first It is possible to prevent the hair from being sucked into the adapter through the two openings (suction port) 42b.

  Moreover, since the water flow part 70 between the one protrusion 71 and the other protrusion 75 is formed in a continuous wave shape, the hot water smoothly passes through the water flow part 70, so that excellent water flow performance (suction performance). ) Can be obtained.

  Needless to say, since the strainer 7 including the one protrusion 71 and the other protrusion 75 is also formed on the first opening 42a side, even when the first opening 42a becomes the suction side opening, In addition to preventing foreign matter from entering the adapter, excellent water flow performance can be obtained.

  Even if a large amount of hair is sucked from the suction port 42b with the filter member 9 removed, the hair can be easily extracted. That is, when the hair is sucked and the suction port 42b is closed, the negative pressure in the second flow path (suction flow path) 43b of the flow path partition member 3 is temporarily increased, and the suction force is increased. Since the second pressure release hole 51b communicating with the suction flow path 43b is formed in the front lid 5 of the flow path partition member 3, as shown by the arrow F3 in FIG. 8B, the negative pressure increases. The hot water in the tank is sucked into the suction flow path 43b from the pressure release hole 50b. Thereby, since the negative pressure in the suction channel 43b is reduced and the suction force is reduced, the hair sucked into the suction port 42b can be easily and easily extracted with a weak force.

  Further, since the rib 53 is formed around the pressure release hole 50b, even if the hair is sucked from the suction port 42b, the rib 53 can prevent the hair from clinging to the pressure release hole 51b. Thus, hot water can be reliably sucked from the pressure release hole 51b, and the hair sucked into the suction port 42b can be more easily and easily extracted.

  Needless to say, even when the first opening 42a side of the flow path partition member 3 serves as a suction port, when hair is sucked from the suction port 42a, hot water in the tank is drawn from the first pressure release hole 51a. Since the negative pressure is reduced by sucking the hair, the hair can be easily extracted.

  In the present embodiment, when the filter member 9 is mounted on the adapter body, the pressure relief holes 51a and 51b are covered by the blind portion 93 of the filter member 9, so that hot water is supplied from the pressure relief holes 51a and 51b. Although it is difficult to be sucked in, no hair or the like is sucked into the suction port (opening 42a or 42b) due to the presence of the filter member 9, so that no trouble occurs.

  On the other hand, in this embodiment, the strainer 7 provided in the openings 42 a and 42 b includes one protrusion 71 and the other protrusion 75 that are alternately arranged, and forms a wave-like water passing portion 70 between the protrusions 71 and 75. It is. Since the wavy water passing portion 70 is continuous, as described above, slender and flexible fibrous foreign matter such as hair cannot pass through, but it does not pass through such as scale generated in the outer tube or the water heater. Granular foreign matter can pass through relatively easily.

  Therefore, in the present embodiment, foreign matter such as scale is clogged due to clogging caused by foreign matter such as scale inside the opening on the discharge side during reheating, for example, the inside of the strainer 7 provided on the first opening (discharge port) 42a side. Can be prevented. In other words, since foreign matter such as scale passes together with hot water and passes through the waved water passing portion 70 of the strainer 7 and is discharged from the discharge port 42a, it is effective that dirt such as scale gets entangled inside the strainer 7 and clogging occurs. Can be prevented.

  In particular, in the present embodiment, tapered guide portions 72 and 76 that gradually narrow toward the upstream side are formed at the upstream end portions of the one projection 71 and the other projection 75 constituting the strainer 7 in the discharge direction D1. Therefore, dust such as scale is smoothly guided to the water passing portion 70 between the protrusions 71 and 75 by being guided by the tapered surfaces of the guide portions 72 and 76, and passes through the water passing portion 70. Therefore, it is possible to more reliably prevent clogging due to dust entangled inside the strainer 7.

  In addition, in the present embodiment, since the projecting dimensions of the guide portions 72 and 75 are gradually reduced toward the upstream side with respect to the discharge direction D1, the scale is surely guided by the water portion 70. It is possible to more reliably prevent clogging of dust inside the strainer due to scales or the like.

  Here, when the filter member 9 is assembled to the adapter body, dust such as scale discharged from the strainer 7 of the discharge port 42a is entangled inside the filter member 9 during hot water pouring, and the filter member 9 There is a risk of clogging of garbage (clogging).

  Accordingly, in the present embodiment, the front lid 5 of the flow path partition member 3 is formed with a front opening 49a corresponding to the discharge port 42a. Therefore, as shown in FIG. Even if the portion corresponding to the discharge port 42a inside 92 is clogged with dust G, the hot water going to the discharge port 42a passes through the front opening 49a while avoiding the dust G as shown by the arrow F4 in FIG. 8B. Further, the light is discharged from the front toward the side (oblique side) through the corner portion of the front wall 91 and the peripheral side wall 92 of the filter member 9 and the periphery thereof. Therefore, even if dust clogging occurs on the inside of the peripheral wall 92 of the filter member 9, hot water can be reliably discharged into the bathtub, and even if there is dust clogging, reheating and hot water can be reliably performed. .

  Furthermore, since the hot water discharged from the front opening 49a is discharged obliquely to the side, the hot water convects so as to wrap around the inside of the bathtub so that a sufficient stirring effect can be obtained, resulting in temperature unevenness. Can be prevented. In other words, it is possible to reliably prevent a short circuit in which the hot water discharged from the discharge port 42a is sucked from the second discharge port (suction port) 42b on the suction side with little convection.

  In addition, since the blindfold 93 of the filter member 9 is disposed in front of the front opening 49a, the hot water discharged from the front opening 49a is blocked by the blindfold 93, and in front (front). Dispense toward the oblique side more reliably. For this reason, said stirring effect can be improved further and generation | occurrence | production of a temperature nonuniformity etc. can be prevented reliably.

  Here, a part of hot water discharged from the front opening 49 a may convect the inside of the filter member 9 when the dust is clogged. In the present embodiment, it is possible to reliably prevent a problem (short circuit) that the hot water passes through the inside of the filter member 9 and moves to the suction port 42b side and is sucked from the suction port 42b. That is, in this embodiment, since the partition walls 45 and 55 that separate the inside of the filter member 9 into the right and left sides are formed on the front side of the flow path partition member 3 into the discharge side and the suction side, the discharge port 42a. The hot water discharged from the side into the filter member 9 does not flow to the suction side having the suction port 42b, and the short circuit can be effectively prevented.

  Furthermore, in the present embodiment, a large amount of dust G is clogged in the portion corresponding to the discharge port 42a and the front opening 49a inside the filter member 9, and hot water is difficult to be discharged from both the front opening 49a and the discharge port 42a. Even if it becomes, discharge of hot water can be performed continuously. That is, in the present embodiment, the first auxiliary circuit 50a communicating with the outside of the adapter is formed in correspondence with the first flow path (discharge flow path) 43a on the discharge side, so that the dust in the filter member 9 is clogged. Thus, when almost no hot water is discharged from the discharge port 42a and the front opening 49a, the water pressure in the discharge flow path 43a increases. As the water pressure rises, hot water in the discharge passage 43a is introduced into the first auxiliary circuit 50a through the first pressure release hole (first auxiliary circuit one end port) 51a as shown by an arrow F5 in FIG. Then, it flows out from the other end 52a of the pressure relief circuit, passes through the filter member 9, and is discharged into the bathtub. Thus, even if both the discharge port 42a and the front protrusion 49a are clogged, the hot water in the discharge flow path 43a is discharged into the bathtub through the auxiliary circuit 50a, so that the hot water can be continued without any trouble. .

  Moreover, in the present embodiment, the other end port 52a of the auxiliary circuit 50a is opened in the same direction as the discharge port 42a, that is, to the side, so that the hot water passes through the auxiliary circuit other end port 52a to the filter member 9 side. It discharges from the direction. Since the hot water discharged in this way flows along the inner surface of the side wall of the bathtub, the inside of the bathtub is greatly convected, and a short circuit can be prevented more reliably, and also in this respect, a good stirring effect can be more reliably obtained. be able to.

  Furthermore, since the auxiliary circuit 50a is partitioned by the ribs 53 to form a small space with a small capacity, it is possible to secure a sufficient water pressure in the auxiliary circuit 50a and a sufficient flow rate of hot water. it can. For this reason, hot water is discharged vigorously from the auxiliary circuit other end 52a, and the stirring effect can be further improved.

  Furthermore, in this embodiment, since the front opening part 49b is formed also in front of the opening which becomes the suction side at the time of chasing, for example, the second opening (suction port) 42b, the front opening part 49b can also be provided in the tank. Hot water is aspirated. That is, since hot water can be sucked from the front side of the adapter through the front opening 49b, ideal hot water circulation in which hot water is sucked from the front and discharged from the side can be performed. An effect can be improved further and generation | occurrence | production of a temperature nonuniformity etc. can be prevented still more reliably.

  The dust G clogged inside the filter member 9 can be easily removed by removing the filter member 9 from the adapter body and cleaning as described above.

  In the present embodiment, the auxiliary circuits 50a and 50b are formed on both the first and second flow paths 43a and 43b. Therefore, even if the second flow path 43b is on the discharge side, the same as above. Also, hot water can be discharged without any obstacles against clogging.

  Here, in the present embodiment, the hole diameters of the pressure release holes 51 a and 51 b are preferably equal to or larger than the hole diameter of the water passage hole 94 of the filter member 9. That is, when the hole diameters of the pressure release holes 51a and 51b are too small, foreign matter that has passed through the water passage holes 94 of the filter member 9 may be clogged in the pressure release holes 51a and 51b. Specifically, the hole diameters (inner diameters) of the pressure release holes 51a and 51b are preferably set to about 1.0 mm.

  Furthermore, the gap dimension between the one protrusion 71 and the other protrusion 75 (the width dimension of the water passage portion 70) in the strainer 7 is preferably equal to or larger than the hole diameter of the water passage hole 94 of the filter member 9. That is, when the width dimension of the water flow portion 70 is too small, foreign matter that has passed through the water flow hole 94 of the filter member 9 may be clogged in the water flow portion 70 and the strainer 7 may be clogged. Because there is. Specifically, the width dimension of the water passing portion 70 is preferably set to about 1.0 mm.

  Further, in this embodiment, when clogging of dust occurs around an opening on the suction side, for example, the second opening (suction port) 42b, and the suction of hot water from the suction port 42b becomes insufficient, Since the negative pressure in the two flow paths (suction flow paths) 43b increases, the second auxiliary circuit 50b also has a negative pressure. Accordingly, hot water in the bathtub is sucked into the second auxiliary circuit 50b from the other end port 52b, and the hot water passes through the second auxiliary circuit 50b, the one end port 51b, and the second flow path (suction flow path) 43b. Supplied to. Thus, even if the hot water suction from the suction port 42b becomes insufficient due to clogging of dust or the like, the hot water can be reliably sucked and circulated.

  In the present embodiment, the flow restriction protrusion 54 is formed on the upstream side of the discharge direction D1 of the pressure release holes 50a and 50b on the back surface side of the front lid 5 inside the first and second flow paths 43a and 43b. Therefore, the protrusion 54 restricts the entry and exit of hot water between the flow paths 43a and 43b and the auxiliary circuits 50a and 50b. For this reason, in a normal state where there is no clogging of dust or the like, hot water can be effectively prevented from passing through the auxiliary circuits 50a and 50b, and discharge and suction of hot water can be reliably performed through the openings 42a and 42b as normal. The normal operation can be performed smoothly and stably.

  Further, in the present embodiment, the auxiliary circuit 50a, 50b is formed by forming a gap between the front lid 5 and the filter member 9 by the rib 53 formed on the front surface of the front lid 5 of the flow path partition member 3. It is. By making the rib 53 function as a spacer in this way, a sufficient gap dimension between the auxiliary circuits 50a and 50b can be secured. Therefore, when hot water is sucked or discharged through the auxiliary circuits 50a and 50b, the auxiliary circuit 50a. , 50b can be prevented from excessively increasing or decreasing the water pressure. For this reason, discharge and suction from the auxiliary circuits 50a and 50b can be reliably performed in an emergency such as clogging, and the above effect can be obtained more reliably.

  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 the case where the auxiliary circuit was formed with the flow-path partition member 3 and the filter member 9 was described as an example, it is not limited thereto, and in the present invention, the flow path is separated from the filter member. An auxiliary circuit may be formed on the partition member 3 side. For example, a hollow auxiliary circuit may be integrally formed on the front surface of the flow path partition member 3. In this case, needless to say, it is not necessary to form a blindfold on the filter member.

  However, when the auxiliary circuit is formed integrally with the flow path partition member (projecting part in the tank), the configuration of the flow path partition member becomes complicated, which may make it difficult to manufacture. Therefore, as in the above-described embodiment, by forming the auxiliary circuit in cooperation with the flow path partition member and the filter member, each configuration is simplified and manufacturing can be performed easily.

  Further, in the above embodiment, the case where the strainer 7 is provided in both the first and second flow paths 43a and 43b has been described as an example. However, the present invention is not limited thereto, and in the present invention, the first and second flows are provided. A strainer may be provided at least in the opening on the suction side of the path.

  Furthermore, in the above embodiment, the case where the auxiliary circuits 50a and 50b are formed on both the suction side and the discharge side has been described as an example. However, the present invention is not limited thereto, and in the present invention, the auxiliary circuit is provided only on the discharge side. May be formed.

  Furthermore, in the above-described embodiment, the case where the front opening portions 49a and 49b are formed on both the suction side and the discharge side has been described as an example. However, the present invention is not limited thereto, and in the present invention, the auxiliary side is provided only on the discharge side. A circuit may be formed.

  Further, in the above embodiment, the first and second front opening portions 49a and 49b provided on both side edges of the front lid of the in-tank protrusion 4 are connected to the first and second openings 42a and 42b. However, the present invention is not limited to this, and in the present invention, the first and second front opening portions may be formed so as not to communicate with the first and second openings. For example, a through hole may be formed in the vicinity of the first and second openings of the front lid in the protruding portion in the tank, and the through hole may be configured as the first and second front opening portions.

  In the strainer 7 of the above-described embodiment, the other projections 75 are arranged corresponding to each of the plurality of one projections 71 so that the tips of the one projection 71 and the other projection 75 overlap in the circumferential direction. In addition, a continuous gap in the circumferential direction is not formed between the one projection 71 and the other projection 75, but the present invention is not limited to this. For example, in the present invention, the tips of the one projection and the other projection are not overlapped in the circumferential direction but are spaced apart in the front-rear direction, and a gap continuous in the circumferential direction is provided between the one projection and the other projection. You may make it form. In short, in the present invention, it is only necessary that each other projection is provided correspondingly between each of the plurality of one projections.

  In the present invention, the strainer 9 may be detachably attached to the flow paths 43a and 43b. For example, a strainer can be attached to and removed from the flow path by providing a strainer with a support frame that can be attached to and detached from the flow path, and providing the support frame with one protrusion and the other protrusion and attaching and detaching the support frame to and from the flow path. Just do it.

  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 protruding portion 42: peripheral side walls 42a, 42b: first and second openings 43a, 43b: first and second flow paths 49a, 49b: first and second front open portions 9: filter member 91: front Wall 92: Peripheral side wall 93: Blindfold 45: Partition wall part (partition wall)
55: Partition wall (partition wall)

Claims (4)

The tank inner wall surface is provided with an in-tank projecting portion disposed so as to project into the bathtub, and first and second openings are provided on both sides of the peripheral side wall of the in-tank projecting portion, and the first and second openings are provided. In response, the first and second flow paths are provided inside the protruding portion in the tank, and the hot water in the bathtub sucked from one of the first and second openings is the first and second flow paths. Hot water for a bathtub that is sucked into one of the second channels and flows out of the bathtub, and hot water supplied from the outside of the bathtub to the other channel is discharged from the other opening into the bathtub. Mouth adapter,
The first flow path and the discharge flow path of the second flow path are opened forward at least at the edge of the discharge side opening of the first and second openings in the front wall of the protruding portion in the tank. A front opening on the discharge side is provided ,
A filter member having a front wall covering the front of the in-tank protrusion and a peripheral side wall covering a peripheral side surface of the in-tank protrusion is provided,
The hot water inlet adapter for a bathtub , wherein the front opening portion is disposed to face a corner portion between a front wall and a peripheral side wall of the filter member .   The hot water inlet for a bathtub according to claim 1, wherein a suction-side front opening portion that opens the inside of the suction-side flow path forward is provided at an edge portion of the suction-side opening in the front wall of the in-tank protruding portion. adapter. The hot water inlet adapter for bathtubs according to claim 1 or 2 , wherein a blindfold portion that blocks passage of hot water is provided at a position corresponding to the front opening portion of the front wall of the filter member. A partition wall that divides the inside of the filter member into a region where the first opening is disposed and a region where the second opening is disposed is provided in front of the front wall of the protruding portion in the tank. The hot water inlet adapter for bathtubs according to any one of claims 1 to 3 .

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