JP5801702B2 - 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 adapter called non-polar type, hot water in the bathtub is sucked from one of the two openings (suction port) and returned to the outdoor water heater when reheating. Hot water is supplied into the bathtub from the other opening (discharge port).

  In the normal state, such a hot water inlet adapter has a protruding portion in the tank covered with a filter member. However, when a reheating is performed while bathing in a state where the filter member is removed, a suction port is provided. With hot water sucked from the bath, hair such as the bather's hair may be sucked.

  Therefore, in the hot water supply adapter of Patent Documents 1 and 2 below, a pressure release hole leading to the internal flow path is formed in the front wall of the protruding portion in the tank, and when the hair is sucked into the suction port, the pressure release hole Since hot water is sucked into the internal channel from the inside, the suction force with respect to the hair at the suction port is reduced so that the hair can be pulled out easily.

Japanese Patent No. 4774659 JP 2002-195660 A

  By the way, the non-polar type hot water supply adapter shown in Patent Documents 1 and 2 is provided with two flow paths in the protruding portion in the tank, and which flow path becomes the discharge side until assembled in the bathtub, It is undecided whether it becomes the suction side. For this reason, the pressure release holes are formed corresponding to the two flow paths, respectively. In other words, the hot water supply adapter assembled in the bathtub is provided with pressure release holes in both the suction-side flow path and the discharge-side flow path.

  On the other hand, in the hot water supply adapter, the filter member is attached to the protruding portion in the tank in a normal use state. In this state, when reheating is performed, a short circuit occurs in which hot water discharged from the pressure release hole corresponding to the discharge-side flow path is sucked from the pressure release hole corresponding to the suction-side flow path. Stirring may not be sufficiently performed.

  Therefore, in the conventional hot water supply port adapter, the pressure release hole is closed by a filter member attached to the protruding portion in the tank. For this reason, in a normal use state, there was a problem that the pressure release hole had no function and was not necessary.

  This invention is made in view of said subject, and it aims at providing the hot-water port adapter for bathtubs which can utilize a pressure relief hole effectively in the normal use state which attached the filter member. To do.

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

[1] The tank inner wall surface has an in-tank protruding portion arranged to protrude into the bathtub, and the first and second openings are provided on the peripheral side wall of the in-tank protruding portion, and the first and first Corresponding to the two openings, 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. 1. A bathtub which 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. A hot water outlet adapter,
A filter member that is detachably attached to the in-tank protrusion so as to cover the in-tank protrusion,
The first wall and the second pressure release hole communicating with the first and second flow paths are formed in the front wall of the protruding portion in the tank,
A hot water inlet adapter for a bathtub, wherein a water passage hole is provided in a region corresponding to the first and second pressure release holes in the front wall of the filter member.

  [2] The first and second outlet chambers are formed by surrounding the first and second pressure release holes in the gap between the front wall of the protruding portion in the tank and the front wall of the filter member. The hot water inlet adapter for bathtubs according to the preceding item 1.

  [3] At least one part of the surrounding wall which comprises the said 1st, 2nd exit chamber is described in the preceding clause 2 comprised by the rib formed so that it might protrude ahead on the front wall of the said protrusion part in a tank. Hot water adapter for bathtubs.

  [4] The preceding item 2 or 3, wherein a plurality of the first and second outlet chambers are formed, and the first and second outlet chambers are arranged in the first and second outlet chambers, respectively. The hot water outlet adapter for bathtubs as described in 2.

  [5] With respect to the opening areas of the first and second openings of the protruding portion in the tank, the opening areas of the first and second pressure release holes are set to 15% to 25%, respectively. The hot water inlet adapter for bathtubs as described in any one of Claims.

  [6] Any one of items 1 to 5 above, wherein a flow control protrusion is provided on the upstream side of the first and second pressure release holes on the back side of the front wall of the protruding portion in the tank with respect to the discharge direction. The hot water outlet adapter for bathtubs as described in 2.

  According to the hot water inlet adapter for bathtubs of the invention [1], since the water passage hole is formed in the region corresponding to the pressure release hole of the filter member, in the normal state in which the filter member is attached, Even if sufficient hot water is not discharged from the opening, hot water is discharged from the flow path on the discharge side through the pressure release hole and the water passage hole. Therefore, even if the opening on the discharge side is clogged with dust, sufficient hot water can be reliably supplied into the tank. Furthermore, since hot water is discharged forward from the pressure release hole through the water passage hole, a good stirring effect can be obtained by the hot water.

  According to the hot water inlet adapter for bathtubs of the invention [2], the hot water discharged from the pressure release hole passes through the outlet chamber which is a narrow space portion, so that the water pressure and flow velocity of the hot water are sufficiently ensured in the outlet chamber. Can do. For this reason, hot water is discharged vigorously, and a sufficient stirring effect can be obtained more reliably.

  According to the hot water inlet adapter for bathtubs of the invention [3], when the hair is sucked in from the opening on the suction side and the pressure release hole corresponding to the flow path on the suction side becomes negative pressure, the pressure is released by the rib. Since the hair can be prevented from clinging into the hole, hot water is reliably sucked from the pressure release hole, reducing the suction force of the suction side opening, and easily removing the hair sucked into the suction side opening be able to.

  According to the hot water adapter for a bathtub of the invention [4], when the opening on the discharge side is clogged with dust, the hot water is evenly discharged from the plurality of pressure release holes, so that the hot water is unevenly discharged. It can be effectively prevented.

  According to the hot water inlet adapter for bathtubs of inventions [5] and [6], the above effects can be obtained more reliably.

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. 8B is a side cross-sectional view showing the filter member removed from the view of FIG. 8A. 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 of the embodiment. FIG. 13C is a side view showing the filter member of the embodiment. FIG. 13D is a side cross-sectional view showing the filter member of the embodiment. FIG. 14A is an enlarged front cross-sectional view showing the periphery of the mesh sheet in the filter member of the embodiment. FIG. 14B is an exploded view of FIG. 14A. FIG. 15A is a front view showing an annular inner frame of the filter member of the embodiment. FIG. 15B is a bottom view showing the annular inner frame of the embodiment. FIG. 15C is a side view showing the annular inner frame of the embodiment. 15D is a cross-sectional view taken along the line DD of FIG. 15B. FIG. 16 is a front view showing a mesh sheet of the filter member 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 is formed in the outer side of the both-sides edge part of the front cover 5, and it is 1st, 2nd flow through this 1st, 2nd front opening part 49a, 49b. The paths 43a and 43b open forward. The first and second front opening portions 49a and 49b communicate with the first second openings 42a and 42b, and the first and second front opening portions 49a and 49b and the first second openings 42a and 42b. Thus, the vicinity of the first and second flow paths 43a and 43b is greatly opened from the front surface to the outer surface.

  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.

  In addition, each one protrusion 71 is set to have a protruding dimension such that the tip thereof is disposed at a substantially 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, on the front 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 front lid in the vicinity of the openings of the first and second flow paths 43a and 43b. A plurality of other protrusions 75 are formed on the rear surface of the rear surface 5 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 each tip is disposed at a substantially intermediate position between the rear wall 41 and the front lid 5. Further, each other protrusion 75 is disposed corresponding to each of the plurality of one protrusions 71. Therefore, the tips of the plurality of one projections 71 and the plurality of other projections 75 are arranged on the circumferential line at the intermediate position between the rear wall 41 and the front lid 5, and the one projection 71 and the other projection 75 are connected to each other. A substantially rectangular wave (square wave) gap is formed between them in the circumferential direction.

  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 plurality of one protrusions 71 and the plurality of other protrusions 75 function as the strainer 7. Further, the spaces between the plurality of one projections 71, the spaces between the plurality of other projections 75, and the gaps between both the projections 71 and 75 function as the water passing portion 70 of the strainer 7.

  The upstream end (outer end) of the strainer 7 with respect to the suction direction D <b> 2 is disposed at a position corresponding to both side edges of the front lid 5. Therefore, the strainer 7 is adjacent to the first and second front opening portions 49a and 49b.

  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. Each of the ribs 53, 53 is formed so as to surround several pressure release holes 51a, 51b except for portions corresponding to the first and second openings 42a, 42b at both side edges of the front lid 5. These ribs 53 and 53 and an annular inner frame 95 of the filter member 9 to be described later surround the periphery of the pressure release holes 51a and 51b on the front surface side of the front lid 5, and this surrounded portion is the first. 1 and 2nd exit chambers 50a and 50b. As a result, a plurality of first and second outlet chambers 51a and 50b are provided, and a plurality of pressure release holes 51a and 51b are arranged in the first and second outlet chambers 51a and 51b, respectively. It has become.

  In the present embodiment, the peripheral walls of the first and second outlet chambers 50a and 50b are constituted by the rib 53 and the annular inner frame 95 of the filter member 9 described later. That is, the rib 53 constitutes part of the peripheral wall of the first and second outlet chambers 50a and 50b.

  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 control protrusion 54 is formed so as to protrude rearward.

  The flow control protrusion 54 has an upstream surface formed in an oblique cut shape with respect to the discharge direction D1, and the surface is formed in an inclined surface inclined in the discharge direction D1.

  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 to 13D and the like, the filter member 9 basically includes a filter cover 90 formed of a metal thin plate press-formed product and an annular inner frame 95 attached to the inside of the filter cover 90. As an element.

  The filter cover 90 has a cylindrical peripheral side wall 92 and a front wall 91 provided on the front side of the peripheral side wall 92.

  First and second openings 92 a and 92 b are formed in the peripheral side wall 92 corresponding to the first and second openings 42 a and 42 b of the flow path partition member 3. Inner bent portions 921 and 921 are formed at the peripheral portions of the first and second openings 42a and 42b in the peripheral side wall 92 by bending the peripheral portions inward. Further, a plurality of engagement holes 922 are formed in the peripheral side wall 92 at intervals in the circumferential direction.

  Water passage holes 94 made up of a large number of small holes are formed in the entire area of the central portion excluding the outer peripheral edge portion of the front wall 91.

  In the present embodiment, the first and second openings 92a and 92b in the filter cover 90 are configured as outer openings, respectively. Further, the water passage 94 constitutes a water passage portion that allows passage of hot water.

  As shown in FIGS. 15A to 15D and the like, the annular inner frame 95 is constituted by, for example, an integrally molded product of hard synthetic resin or the like, and can be arranged along the peripheral side wall (peripheral side surface) of the in-tank protruding portion 4. ing. The annular inner frame 95 includes a peripheral side wall 96 that is accommodated in the peripheral side wall 92 of the filter cover 90.

  An inwardly protruding edge 961 that protrudes inward is formed on the entire front end of the peripheral side wall 96. The inward protruding edge 961 does not have a water passage portion such as a hole, so that hot water cannot pass therethrough. In the present embodiment, the inwardly protruding edge 961 is a flow passage peripheral wall piece as a part of the peripheral wall portion constituting the first and second flow passages 43a and 43b in the vicinity of the first and second openings 42a and 42b. Configured as

  An outward projecting edge portion 963 that protrudes outward is formed on the entire rear end of the peripheral side wall 96. Furthermore, a plurality of engaging protrusions 962 that protrude outward and have elasticity are formed on the peripheral side wall 96 so as to correspond to the plurality of engaging holes 922 of the filter cover 90.

  Further, on the inner side surface of the peripheral side wall 96, three locking projections 98 are formed so as to protrude inwardly at predetermined intervals in the circumferential direction corresponding to the locking grooves 48 of the flow path partition member 4. Yes.

  In the peripheral side wall 96, first and second openings 97a and 97b are formed corresponding to the first and second openings 92a and 92b of the filter cover 90, respectively.

  The peripheral edge portions of the first and second openings 97a and 97b are formed to be recessed so that the entire circumference is recessed inward, so that a sheet installation surface 971 is formed.

  As shown in FIGS. 14A and 14B, sheet pressing pieces 972 are formed at both ends of the annular inner frame 95 in the circumferential direction of the sheet setting surface 971 so as to cover the sheet setting surface 971 from the outside.

  In the present embodiment, sheet attachment grooves 975 and 975 are formed by the inner side surface of the sheet holding piece 972, that is, the surface facing the sheet installation surface 971 and the both end portions of the sheet installation surface 971. The sheet attachment grooves 975 and 975 on both sides are formed so that the opening directions face each other. Further, the inner side surface of the sheet holding piece 972 is formed as an inclined surface, whereby the sheet attachment grooves 975 and 975 are formed by substantially V-shaped V grooves in a front sectional view in which the width size gradually decreases toward the back side. It is configured.

  As shown in the front view of FIG. 15B and the like, the sheet attachment grooves 975 and 975 are open to the front surface side so that both end portions of the mesh sheet 6 described later can be inserted from the front through the front opening portion. It has become.

  In the present embodiment, the first and second openings 97a and 97b in the annular inner frame 95 are each configured as an inner opening. Further, the first and second openings 97a and 97b in the annular inner frame 95 and the first and second openings 92a and 92b in the filter cover 90 are used to form the first and second openings (discharge side opening and suction side) of the filter member 9. Opening). Further, the first and second openings of the filter member 9 or the mesh sheets 6 and 6 provided in the first and second openings constitute a water passage portion that allows passage of hot water. Further, the peripheral side wall 96 of the annular inner frame 95 and the peripheral side wall 92 of the filter cover 90 constitute a peripheral side wall of the filter member 9.

  Mesh sheets 6 and 6 as sheet-like filter materials are attached to the first and second openings 97a and 97b of the annular inner frame 95.

  In this embodiment, the mesh sheets 6 and 6 are made of an extremely thin metal sheet in which a large number of small holes 61 and 61 are formed in an intermediate region excluding the outer peripheral edge portion, and have flexibility or flexibility. doing. In the present embodiment, an etching process such as wet etching is employed as a method for forming the small holes 61 in the mesh sheet 6.

  As shown in FIGS. 14A and 14B, in order to attach the mesh sheets 6 and 6 to, for example, the first opening 97a of the annular inner frame 95, both end portions in the length direction of the mesh sheet 6 are provided with corresponding sheet attachment grooves on both sides. 975,975 is inserted from the front opening part (refer FIG. 15B). Thereby, the mesh sheet 6 is installed on the sheet installation surface 971 at the peripheral edge of the first opening 97a. In this sheet installation state, both ends of the mesh sheet 6 are inserted to the back of the V-shaped sheet attachment grooves 975 and 975, and both ends of the mesh sheet 6 are formed by the sheet holding pieces 972 and the sheet installation surface 971. It will be in a state of being pinched. Therefore, the mesh sheet 6 can be temporarily fixed to the first opening 97a in a stable state.

  The second opening 97b of the annular inner frame 95 is also attached to the mesh sheet 6 in a temporarily fixed state in the same manner as described above.

  Thus, the filter cover 90 is assembled to the annular inner frame 95 to which the filters 6 and 6 are temporarily fixed.

  In other words, the peripheral side wall 92 of the filter cover 90 is fitted to the outside of the peripheral side wall 96 of the annular inner frame 95 so as to cover the annular inner frame 95 from the front by the filter cover 90. At this time, as shown in FIGS. 13C and 13D, the engagement protrusion 962 of the annular inner frame 95 is elastically engaged with the engagement hole 922 of the filter cover 90, so that the filter cover 90 is inadvertently attached to the annular inner frame 95. Fix it so that it does not come off.

  Thus, the filter cover 90 is attached to the annular inner frame 95, and the filter member 9 is assembled.

  In this assembled state, as shown in FIG. 13D and the like, the inwardly protruding edge 961 of the annular inner frame 95 is in contact with the outer peripheral edge of the front wall 91 of the filter cover 90 and The facing protruding portion 963 contacts the rear edge of the peripheral side wall 92 of the filter cover 90.

  Further, in this assembled state, the first and second openings 92a and 92b of the filter cover 90 are arranged corresponding to the first and second openings 97a and 97b of the annular inner frame 95 and the mesh sheets 6 and 6, respectively. . Further, as shown in FIG. 14A, inner bent portions 921 and 921 at the peripheral portions of the first and second openings 92a and 92b in the filter cover 90 are arranged to face the outer peripheral portions of the mesh sheets 6 and 6, The outer peripheral edge portions of the mesh sheets 6 and 6 are fixed by the bent portions 921 and 921 so as to be suppressed to the sheet installation surface 971 side. Thereby, the mesh sheets 6 and 6 are attached to the first and second openings 92a, 97a, 92b, and 97b in a stable state with sufficient strength.

  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 walls 92 and 96 of the filter member 9 are connected to the in-tank protruding portion 4 of the flow path partition member 3 on the front side The locking projection 98 of the annular inner frame 95 in the filter member 9 is inserted into the locking groove 48 on the tank protruding portion 4 side from the front 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 the filter member 9 is twisted in the opposite direction to move the locking protrusion 98 of the filter member 9 from the back end position of the locking groove 48 to the inlet side, the filter member 9 is moved into the tank. The protrusion 4 can be removed.

  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, hot water discharged from one of the first and second pressure release holes 51a, 51 passes directly through the inside of the filter member 9, and the other pressure release hole or the other. It is possible to reliably prevent problems that are sucked into the opening, so-called short circuits.

  Further, as shown in FIG. 8A, the inwardly protruding edge portion 961 of the annular inner frame 95 and the rib 53 provided on the front surface of the flow path partition member 3, the front of the first and second pressure relief holes 51a and 51b are provided. As described above, the first and second outlet chambers 50a and 50b are formed by surrounding the periphery. The first and second outlet chambers 50 a and 50 b are opened to the front of the filter member 9 through water passage holes 94 in the front wall 91 of the filter member 9.

  The first and second openings 42 a and 42 b of the flow path partition member 3 are arranged to face the first and second openings 92 a, 97 a, 92 b and 97 b of the filter member 9.

  Further, the first and second front opening portions 49 a and 49 b located on the front side of the first and second openings 42 a and 42 b in the flow path partition member 3 are inwardly protruding edge portions 961 in the annular inner frame 95 of the filter member 9. It is blocked by In other words, the inwardly protruding edge portions 961 and 961 are in front of the front walls (flow channels) that are part of the peripheral walls constituting the first and second flow paths 43a and 43b in the vicinity of the first and second openings 42a and 42b. Road wall piece). Therefore, when the filter member 9 is removed from the adapter body, as shown in FIG. 8B, the vicinity of the first and second openings 42a and 42b in the first and second flow paths 43a and 43b 2 Largely open from the front to the side through the front opening portions 49a, 49b and the first and second openings 42a, 42b.

  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. 8A. Then, the fluid is supplied into the bathtub through the mesh sheet 6 in the first opening 42 a of the flow path partition member 3 and the first openings 92 a and 97 a of the filter member 9.

  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. 8A, hot water (water) in the bathtub passes through the mesh sheet 6 in the second openings 92b and 97b of the filter member 9 and the second opening 42b of the flow path partition member 3. Then, the hot water is sucked into the second flow path 43b of the flow path partition member 3, and the hot water is returned to the 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 mesh sheet 6 of the filter member 9. At the same time, the hot water in the bathtub is returned to the water heater through the mesh sheet 6 of 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 mesh sheets 6 and 6 of the first and second openings 92a, 97a, 92b, and 97b in the filter member 9 pass into the bathtub. Supplied.

  According to the hot water supply port adapter of the present embodiment configured as described above, the strainer 7 is inserted into the openings 42a and 42b of the flow path partition member 3 by the plurality of one protrusions 71 and the plurality of other protrusions 75 that are alternately arranged. Therefore, when the filter member 9 is used with the filter member 9 removed, the hair of the bather is taken from the suction side opening, for example, the second opening (suction port) 42b, of the openings 42a and 42b of the flow path partition member 3. It is possible to prevent the hair from being sucked into the adapter even if it is sucked.

  Moreover, when hot water smoothly passes through the water passing portion 70 between the one protrusion 71 and the other protrusion 75, excellent water passing 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 51b. 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, as shown in FIG. 8B, since the rib 53 is formed around the pressure release hole 51b, even if the hair is sucked in from the suction port 42b, the hair is collected in the pressure release hole 51b by the rib 53. Therefore, the 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 extracted.

  Needless to say, even if the first opening 42a side of the flow path partition member 3 is the suction port, even if the hair is sucked from the suction port 42a, the hair can be easily extracted as described above. it can.

  Further, in the present embodiment, when the filter member 9 is attached to the adapter body, as shown in FIG. 8A, the presence of the mesh sheets 6 and 6 of the filter member 9 causes the suction port (opening 42a or 42b). ) Hair is not sucked in, so no problems occur.

  On the other hand, in the present embodiment, the strainer 7 provided in the openings 42 a and 42 b includes one protrusion 71 and the other protrusion 75 arranged alternately, and forms a substantially wave-shaped water passage 70 between the protrusions 71 and 75. Is. Since the water passing portion 70 is continuous without interruption, as described above, slender and flexible fibrous foreign matter such as hair cannot pass through, but granular material such as scale that is generated in the bathtub. Foreign objects 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 scales discharged through the strainer 7 of the discharge port 42a is entangled with the mesh sheet 6 of the filter member 9 when the hot water is poured. There is a possibility that dust (clogging) may occur in the sheet 6.

  Therefore, in the present embodiment, the pressure release holes 51a and 51b are not blocked by the filter member 9 and are opened forward through the water passage holes 94, so that the mesh as shown by an arrow F4 in FIG. 8A. Even if dust G adheres to the sheet 6 and becomes clogged, hot water is discharged from the first flow path 43a through the first pressure release hole 51a and through the water passage hole 94 of the filter member 9 to the front. Become. Therefore, even if dust clogging occurs inside the mesh sheet 6 of the filter member 9, hot water can be reliably discharged into the bathtub, and even if there is dust clogging, the reheating and hot water can be reliably performed. it can. Moreover, since the hot water discharged from the pressure release hole 51a is discharged forward through the water passage hole 94, a good stirring effect can be obtained by the hot water.

  Further, since a large number of the pressure release holes 51a are formed, it is possible to effectively prevent the hot water from being discharged evenly by discharging the hot water evenly from the many pressure release holes 51a.

  Moreover, by surrounding the periphery of the pressure release hole 51a on the front side of the front lid 5 with the rib 53 and the annular inner frame 95 of the filter member 9, the outlet chamber 50a is formed, and the hot water discharged from the pressure release hole 51a is It passes through the outlet chamber 50a. Since the outlet chamber 50a has a small capacity and a narrow space, the water pressure of the hot water can be sufficiently secured in the outlet chamber 50a, and the flow rate of the hot water can be sufficiently secured. For this reason, hot water is discharged to the front of the filter member 9 vigorously, and a sufficient stirring effect can be obtained more reliably.

  In the present embodiment, although a large number of pressure relief holes 51a are formed over a wide range, a plurality of outlet chambers 50a are formed, and several pressure relief holes 51a are arranged in each outlet chamber 50a. Yes. For this reason, the capacity | capacitance of each exit chamber 50a can be made small, and the flow rate of the hot water in each exit chamber 50a can fully be ensured.

  Further, in the present embodiment, even when the second opening 42b side is the discharge port, as described above, hot water can be reliably supplied into the bathtub and a sufficient stirring effect can be obtained when the dust is clogged. .

  Here, when dust is clogged, a part of hot water discharged from the pressure release hole 51 a may convect the inside of the filter member 9. 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 prevented more reliably and effectively.

  Even in the case where the second opening 42b side is the discharge port, a short circuit can be similarly prevented.

  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.

  In the present embodiment, the total opening area of the first pressure release hole 51a with respect to the opening area of the first opening 42a or the total opening area of the second pressure release hole 51b with respect to the opening area of the second opening 42b is 15% to 25%. It is good to set to%. That is, when the opening area of the pressure release holes 51a and 51b is too large, a large amount of hot water is discharged from the pressure release holes 51a and 51b even in a normal state where there is no clogging of dust, so May be formed. On the other hand, if the opening areas of the pressure release holes 51a and 51b are too small, sufficient hot water may not be discharged from the pressure release holes 51a and 51b when the garbage is clogged, and the hot water may not be supplied sufficiently. .

  Further, as shown in FIG. 8A, the dust G adhering to the inside of the mesh sheet 6 in the filter member 9 can be easily removed by removing the filter member 9 from the adapter body and cleaning it.

  Furthermore, in the present embodiment, as shown in FIG. 8A, a large amount of dust G is clogged inside the mesh sheet 6, and the dust G enters the first flow path (discharge flow path) 43a of the adapter body and adheres. Even if it is, the garbage G can be easily removed.

  That is, in the present embodiment, the front opening 49 a at the peripheral edge of the discharge port 42 a of the discharge flow path 43 a is closed by the annular inner frame 95 of the filter member 9. That is, a part of the peripheral wall portion constituting the discharge flow path 43 a in the vicinity of the discharge port is configured by the annular inner frame 95 of the filter member 9. For this reason, as shown in FIG. 8B, if the filter member 9 is removed from the adapter main body, the vicinity of the discharge port of the discharge flow path 43a can be largely opened to the front side via the front opening 49a and the discharge port 42a. Accordingly, the dust G that has entered the discharge flow path 43a can be easily removed through the open portion from the front open portion 49a to the discharge port 42a.

  In addition, in the present embodiment, since the strainer 7 is disposed in the vicinity of the front opening 49a, the dust G clogged in the strainer 7 can be easily removed via the front opening 49a and the discharge port 42a.

  As described above, in this embodiment, the dust G clogged in the discharge flow path 43a and the strainer 7 can be easily removed, and cleaning can be easily performed.

  Even in the case where the second opening 42b side becomes the discharge port, similarly, the dust G clogged in the discharge flow path 43b and the strainer 7 can be easily removed.

  Here, in this embodiment, in the strainer 7, the dimension between the one protrusions 71, the dimension between the other protrusions 75, and the gap dimension between the both protrusions 71, 75 are the same as those of the water passage hole 94 of the filter member 9. It is good to form it equal to or larger than the hole diameter. That is, if each of the above dimensions is too small, foreign matter that has passed through the water passage hole 94 of the filter member 9 may clog the strainer 7 and cause clogging. Specifically, the above dimensions are preferably set to about 1.0 mm.

  Further, in this embodiment, dust clogging occurs in the vicinity of the opening on the suction side, for example, the second opening (suction port) 42b, for example, the mesh sheet 6 or the strainer 7, and the suction of hot water from the suction port 42b is insufficient. In this case, the negative pressure in the second flow path (suction flow path) 43b increases. Then, since the pressure release hole 51b and the outlet chamber 50b communicating with the suction flow path 43b also have negative pressure, hot water is sucked into the outlet chamber 50b and the pressure release hole 51b from the water flow hole 94 of the filter member 9, and further the suction flow path. It is sucked into 43b. Accordingly, even if hot water is not sufficiently sucked from the suction port 42b due to clogging of dust or the like, the hot water can be reliably sucked and circulated.

  Even in the case where the first opening 42a is on the suction side, similarly, hot water can be reliably sucked in even when the dust is clogged.

  In the present embodiment, the flow control protrusion 54 is formed on the upstream side with respect to the discharge direction D1 of the pressure release holes 51a and 51b on the back surface side of the front lid 5 inside the first and second flow paths 43a and 43b. Therefore, the flow of hot water can be appropriately controlled by the protrusion 54. For example, in the flow path 43a or 43b on the discharge side in a normal state free from dust clogging, hot water is reliably discharged from the opening 42a or 42b while preventing the hot water from being discharged from the pressure release holes 51a or 51b. Can be discharged. Accordingly, it is possible to prevent such a problem that hot water is inadvertently discharged from the front surface of the hot water supply adapter when reheating.

  Also, by the action of the flow control projection 54, hot water can be sucked from the opening 42a or 42b in the flow path 43a or 43b on the suction side in a normal state without clogging of dust, and from the pressure release hole 51a or 51b. Can also inhale. Therefore, it is possible to perform an ideal hot water circulation in which hot water is sucked in from the front of the hot water inlet adapter and discharged from the side, the stirring effect can be further improved, and the occurrence of temperature unevenness and the like can be further ensured. Can be prevented.

  In this embodiment, as described above, when the filter member 9 is assembled, the mesh sheet 6 can be temporarily fixed to the annular inner frame 95 simply by inserting the mesh sheet 6 into the sheet attachment grooves 975 and 975.

  In addition, since the sheet attachment grooves 975 and 975 are formed in a V-shaped cross section that gradually decreases in width toward the back, if the sheet attachment grooves 975 and 975 are inserted into both ends of the mesh sheet 6, The front and back surfaces at both ends are sandwiched between the inner surfaces on both sides of the sheet mounting grooves 975 and 975, and the mesh sheet 6 can be temporarily fixed to the annular inner frame 95 in a stable state. Therefore, when the filter cover 90 is externally fitted to the annular inner frame 95 with the mesh sheet 6, the mesh sheet 6 is not accidentally dropped and the filter cover 90 can be easily attached to the annular inner frame 95. Can be attached to.

  As described above, the attaching operation of the mesh sheet 6 to the annular inner frame 95 and the attaching operation of the filter cover 90 to the annular inner frame 95 can be easily performed. As a result, the assembling operation of the filter member 9 can be easily performed. it can.

  In the present embodiment, the inner bent portions 921 and 921 are formed at the opening edge portions of the first and second openings 92a and 92b in the filter cover 90 so that the opening edge portions are pushed and bent inward. Therefore, at the same time as the filter cover 90 is externally fitted to the annular inner frame 95, the outer peripheral edge portions of the mesh sheets 6 and 6 are suppressed to the sheet installation surface 971 and 971 side by the inner bent portions 921 and 921. For this reason, the mesh sheets 6 and 6 can be prevented from floating from the sheet installation surfaces 971 and 971, and the mesh sheets 6 and 6 can be securely fixed to the sheet installation surfaces 971 and 971. Therefore, after the filter member 9 is assembled, problems such as inadvertent dropping of the mesh sheets 6 and 6 can be prevented.

  Furthermore, in the present embodiment, since the mesh sheets 6 and 6 are held down and fixed by the inner bent portions 921 and 921 of the filter cover 90, a member for holding down the mesh sheets 6 and 6 is required separately. Accordingly, the number of parts can be reduced accordingly, and the assembling work of the filter member 9 can be more easily performed, and the cost can be reduced. Further, by reducing the number of parts, the filter member 9 can be made thinner and the aesthetics can be further improved.

  Further, by forming the inner bent portions 921 and 921 at the peripheral edge portions of the first and second openings 92a and 92b in the filter cover 90, the distal end surfaces (cut end surfaces) of the inner bent portions 921 and 921 are arranged inward. Therefore, the cut end surfaces of the inner bent portions 921 and 921 are disposed inside the filter member 9. For this reason, the malfunction that a fingertip etc. contact the cutting | disconnection end surface of the inner bending parts 921 and 921 can be prevented reliably.

  Moreover, the mesh sheet 6 of this embodiment can be easily manufactured only by forming a large number of small holes 61 by etching or the like in the center of the metal sheet.

  In other words, the mesh sheet that has been generally used is knitted into a mesh of linear metal such as ultrafine wire, the mesh member is cut into a predetermined size, and then the outer peripheral edge is coated with a resin or the like to form an outer peripheral frame. It is made to manufacture by forming. For this reason, many processes, such as a knitting process of a wire, a cutting process, and a resin coating process, are required, and there exists a possibility that manufacture may become difficult. Moreover, the resin coating process is a dense and delicate operation, and in this respect also, the manufacture becomes difficult. Furthermore, if the processing accuracy of the resin coating is poor, or if it is used for a long time, the end face of the wire will be exposed, the wire will break apart, and sufficient durability may not be obtained, and the filter function may be impaired. .

  On the other hand, the mesh sheet 6 of the present embodiment can be easily manufactured simply by performing cutting processing of a metal sheet and drilling processing by etching or the like. Moreover, the mesh sheet 6 of the present embodiment has a water-flowing part composed of a group of small holes 61 at the center and an outer peripheral frame part, so that there is a problem that the wire breaks down as in the conventional case. In addition, sufficient durability can be obtained and the filter function is not impaired.

  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 mesh sheet | seat which formed many small holes in the metal sheet was mentioned as an example and demonstrated as a sheet-like filter raw material, the sheet-like filter raw material of this invention is not restricted only to it. For example, you may make it use the filter material of the type in which the fine wire was integrated in the net shape.

  In the above embodiment, the first and second front opening portions 49a and 49b in the flow path partition member 3 are communicated with the first and second openings 42a and 42b. However, the present invention is not limited thereto. Absent. In the present invention, for example, the first and second front opening portions may be formed in a non-communication state with respect to the first and second openings. That is, you may make it partition between the 1st, 2nd front opening part and the 1st, 2nd opening by a part of front wall. Even in this case, dust in the first and second flow paths can be removed only through the first and second front opening portions.

  Moreover, in the said embodiment, although the case where the strainer 7 was provided in both the 1st, 2nd flow paths 43a and 43b was mentioned as an example and demonstrated, it is not restricted only to it and in this invention, it is the 1st, 2nd flow. A strainer may be provided at least in the opening on the suction side of the path.

  Further, in the strainer 7 of the above embodiment, the tips of the plurality of one projections 71 and the plurality of other projections 75 are arranged at a substantially intermediate position between the rear wall 41 and the front lid 5. The present invention is not limited to that. For example, by setting the dimensions so that the tips of the one projection 71 and the other projection 75 do not reach the intermediate position, the tips of the projections 71 and 75 do not overlap each other in the circumferential direction. A continuous gap in the circumferential direction may be formed between the other projection 75. Furthermore, each other protrusion may be arranged between each of the plurality of one protrusions so that a gap continuous in the circumferential direction is not formed between the one protrusion 71 and the other protrusion 75. 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 protrusion 42: peripheral side walls 42a, 42b: first and second openings 43a, 43b: first and second flow paths 5: front lid (front wall)
50a, 50b: first and second outlet chambers 51a, 51b: first and second pressure release holes 53: ribs 54: flow control protrusions
9: Filter member 91: Front wall 94: Water passage hole D1: Discharge direction (outer diameter direction, outward direction)
W: Side wall of bathtub

Claims (6)

The inner wall surface of the bathtub has a protruding portion in the tank arranged to protrude into the bathtub, and the first and second openings are provided in the peripheral side wall of the protruding portion in the tank, and the first and second openings Correspondingly, first and second flow paths are provided inside the in-tank protrusion, and hot water in a bathtub sucked from one of the first and second openings is the first and second channels. A hot water outlet for a bathtub that is drawn into one of the two 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. An adapter,
A filter member that is detachably attached to the in-tank protrusion so as to cover the in-tank protrusion,
The first wall and the second pressure release hole communicating with the first and second flow paths are formed in the front wall of the protruding portion in the tank,
A hot water inlet adapter for a bathtub, wherein a water passage hole is provided in a region corresponding to the first and second pressure release holes in the front wall of the filter member.   The first and second outlet chambers are formed by surrounding the first and second pressure release holes in the gap between the front wall of the protruding portion in the tank and the front wall of the filter member. Item 1. A hot water adapter for a bathtub according to item 1.   3. The bathtub according to claim 2, wherein at least a part of the surrounding walls constituting the first and second outlet chambers is configured by a rib formed so as to protrude forward on the front wall of the protruding portion in the tank. Hot water outlet adapter.   The said 1st, 2nd exit chamber is formed in multiple numbers, respectively, The said 1st, 2nd exit chamber is respectively arrange | positioned with the said some 1st, 2nd pressure relief hole. Hot water adapter for bathtubs.   The opening area of the first and second pressure release holes is set to 15% to 25%, respectively, with respect to the opening areas of the first and second openings of the protruding portion in the tank. The hot water outlet adapter for bathtubs according to item 1. The flow control protrusion is provided in any one of Claims 1-5 in the upstream with respect to the discharge direction rather than the said 1st, 2nd pressure release hole in the front wall back surface side of the said protrusion part in a tank. Hot water adapter for bathtubs.

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