JP2007010281A - Hot water port instrument for bathtub - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water port instrument for a bathtub capable of making assembly work easy and making the instrument compact. <P>SOLUTION: A plurality of engaging protrusions 31 evenly allocated in a circumference direction are formed at either one 52 of a front flange part 25 of an in-tub fixture 2 or an outer circumference wall part 52 of a flow passage forming member 3 and, at the other one 25, notch openings 26 evenly allocated in a circumference direction for making the engaging protrusions 31 relatively enter in an axial direction by pressing operation to a front part flange 25 of the in-tub fixture 2 from front side and a plurality of engaging groove parts 27 (28) being detachably engaged with respective engaging protrusion parts 31 according to transition of the engaging protrusion parts 31 at the time that the flow passage forming member 3 is operated to rotate around its axis from a state where the engaging protrusion parts 31 are entered in the notch openings 26. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hot water outlet apparatus for a bathtub that is attached to a bathtub wall in a penetrating state and serves to supply hot water supplied from a hot water heater outside the bathtub to the inside of the bathtub so as to be circulated.

  2. Description of the Related Art Conventionally, bathtub systems that perform not only hot water storage processing for supplying hot water to a bathtub but also reheating processing have been widely used.

  In this bathtub system, a hot water outlet device for a bathtub is attached in a penetrating manner to a side wall of the bathtub, and the hot water outlet device and a hot water heater outside the bathtub are connected by piping. And when hot water is stored, hot water supplied from the water heater is introduced into the bathtub through the hot water port device, while when reheating, hot water in the tank is sucked from the hot water port device and sent to the hot water device, where it is reheated. It is comprised so that it may return in a bathtub later.

  The bathtub hot water outlet device used for such a bathtub system generally has a tank external fixture attached to the side wall outer surface of the bathtub, a hot water discharge channel and a hot water suction channel, and is provided on the inner side of the bathtub side wall. An apparatus main body to be attached, and a filter member attached to the apparatus main body, the apparatus main body penetrating the side wall from the inside of the bathtub, and coupled to the outside-tank fitting. And a circular flow path forming member coupled to the front flange portion of the in-tank fixture.

  Conventionally, these in-tank fixtures and the flow path forming member are generally coupled by screwing means (see Patent Document 1).

Specifically, as shown in FIG. 15, a plurality of (for example, three screw insertion holes 102...) Are provided on the front surface of the flow path forming member 101 so as to be equally distributed in the circumferential direction. A plurality (for example, six) of screw receiving bosses 104... Are integrally arranged in the circumferential direction on the front outer peripheral portion of the front flange portion 103a of the tool 103, and the in-tank fitting 103 is attached to the bathtub. Screws 105... That are inserted through the screw insertion holes 102 of the flow path forming member 101 in a state of being coupled to an external fixture (not shown) through the side wall are screwed into selected boss portions 104 of the internal fixture 103. The flow path forming member 101 is detachably attached to the front flange portion 103a of the in-tank fixture 103 by being inserted.
JP 2004-301472 A

  However, in the above known technique, the flow path forming member 101 is coupled to the front flange portion 103a of the in-tank fitting 103 using a plurality of screws 105, so that a plurality of screwing operations are performed. Is relatively troublesome, and if the screw 105 is dropped during the work, the screwing work must be redone. As a result, this joining work takes a considerable amount of time.

  Moreover, a plurality of screw receiving boss portions 104... Must be provided on the front surface of the front flange portion 103 a of the in-tank fitting 103, and the formation site of these screw receiving boss portions 104. For this reason, the in-tank fitting 103 is inevitably increased in size.

  This invention is made | formed in view of the said situation, and makes it a subject to provide the hot-water port apparatus for bathtubs which can attain the ease of assembly | attachment workability | operativity, and miniaturization.

  The above problem is solved by the following means.

[1] In a hot water outlet apparatus for a bathtub, which is attached to a bathtub wall in a penetrating state and supplies hot water supplied from a water heater installed outside the bathtub into the bathtub so as to be circulated.
An apparatus main body having a discharge port to the hot water bathtub and a hot water suction port in the bathtub, and leading two flow paths of the external fixture connected to the water heater to the discharge port and the suction port; It has a filter function for hot water from the bathtub, and comprises a filter member mounted at a predetermined location of the apparatus body,
The apparatus main body passes through the wall portion from the inside of the bathtub and is connected to the external fixture and connected to the external flange and the front flange portion for coupling in the internal fixture And a circular flow path forming member coupled to each other,
A plurality of locking projections equally distributed in the circumferential direction are formed on either the front flange portion of the in-tank fixture or the outer peripheral wall portion of the flow path forming member, and the other is a circular shape. A notch opening that is equally distributed in the circumferential direction and that makes the locking protrusion relatively approach in the axial direction by a pressing operation from the front against the front flange of the in-tank fixture, and a state in which the locking protrusion has entered the notch opening A plurality of engaging groove portions that are detachably engaged with the respective locking projections are formed along with the change of the locking projections when the flow path forming member is rotated around the axis. A hot water outlet device for a bathtub.

  [2] The number of the notch openings and the engaging groove portions is an integral multiple of the locking protrusion, and the notch openings and the engaging groove portions rotate in the circumferential direction of the flow path forming member with respect to the in-tank fixture. The hot water outlet apparatus for bathtubs according to the preceding item 1, which is selected according to the position.

  [3] The hot water port apparatus for a bathtub according to the above item 1 or 2, wherein the engagement groove is provided on both sides in the circumferential direction with the notch opening in the middle.

  [4] The hot water outlet apparatus for a bathtub according to any one of the preceding items 1 to 3, further comprising a rotation preventing means for the flow path forming member with respect to the front flange portion of the in-tank fixture.

  According to the invention described in [1], the in-tank fitting is coupled from the inside of the bathtub to the outside-of-tank fitting that is provided on the outer surface side of the wall of the bathtub and connected to the water heater by piping. Thus, either one of the flow path forming member and the front flange portion of the in-tank fitting, for example, a plurality of engaging protrusions formed on the flow path forming member side are aligned with the plurality of notch openings on the other side. If the turning operation is performed after entering, the engaging protrusions are detachably engaged with the engaging groove portions.

  In other words, it can be easily coupled to the in-tank fixture simply by pushing the flow path forming member and then rotating, and can be quickly coupled on site, and the front part of the in-tank fixture like a screwing means. There is no need to form a plurality of screw receiving bosses on the entire circumference of the flange portion, and the flange portion can be made small.

  According to the invention described in [2] above, since the number of the notch openings and the engaging groove portions is an integral multiple of the locking protrusion, in order to set the direction of the hot water discharge port and the like, When determining the position in the circumferential direction, the notch opening and the engagement groove can be selected according to the suitable position of the flow path forming member, and the more the number of the notch openings and the engagement groove, the more the flow path formation member Can be brought close to the optimum position in the circumferential direction.

  According to the invention described in [3] above, since the engaging groove portions on both sides in the circumferential direction are formed with the notch opening in the middle, even if the flow path forming member is rotated and shifted to either the left or right, The locking protrusion can be locked to the engaging groove, and this can be set with the position of the flow path forming member in the circumferential direction as close as possible to the optimum position.

  According to the invention described in [4] above, when the filter member is rotated and removed, the flow path forming member does not rotate, so that the engaging protrusion is engaged unexpectedly. It is prevented from coming off from the groove.

  Embodiments of the present invention will be described below with reference to the drawings.

  1-4 is a figure which shows the hot water port apparatus P for bathtubs concerning embodiment of this invention. As shown in these drawings, the hot water outlet device P for a bathtub according to this embodiment is attached to an attachment hole H provided in a side wall Ta of the bathtub T, and is a hot water heater provided outside the bathtub T. Hot water from (not shown) can be supplied into the bathtub T to perform hot water storage processing such as hot water.

  Furthermore, the hot water in the bathtub T can be sucked and sent to the water heater, and it is reheated, and the hot water at the high temperature is returned to the bathtub T to perform circulation processing such as reheating.

  In addition, this hot water port apparatus P for bathtubs can be used by connecting either the forward pipe or the return pipe connected to the water heater to the outer pipe connecting portions 1a, 1b provided in the apparatus P. Non-polar type.

  As shown in FIG. 1 to FIG. 4, the hot water outlet apparatus P for a bathtub according to this embodiment includes an outside-tub fixture 1, an apparatus main body 10, and a filter member 9 as basic components. The apparatus body 10 includes an in-tank fixture 2 and a flow path forming member 3.

  The tank external fixture 1 is coaxially arranged inside a cylindrical outer cylinder 12 whose one end side (front side) is open and whose other end side (rear side) is closed, and inside the outer cylinder 12. A cylindrical inner cylindrical body 11 is provided, and a flat ring-shaped front flange portion 15 is integrally formed on the outer periphery of one end of the outer cylindrical body 12, while the other end of the outer cylindrical body 12 is closed. First and second outer pipe connecting portions 1a and 1b extending along the axial direction are connected to the wall. Further, a female thread portion 14 is formed on the inner peripheral surface on one end side of the outer cylindrical body 12.

  The inner space of the inner cylinder 11 is configured as a part of the first flow path A for hot water, while the annular space between the inner cylinder 11 and the outer cylinder 12 is the second flow path B for hot water. Configured as part. Further, the first outer pipe connection portion 1 a is communicated with the first flow path A, while the second outer pipe connection portion 1 b is communicated with the second flow path B.

  Note that an O-ring 81 made of synthetic rubber or the like is accommodated in the inner peripheral surface on one end side of the inner cylindrical body 11.

  In addition, the front packing 15 of the out-of-tank fixture 1 is formed in a ring shape from synthetic rubber or the like, and a covering packing 8 is externally fitted thereon. By fitting an annular fitting groove 82 a formed on the inner peripheral surface of the covering packing 8 from the front of the front flange portion 15, the covering packing 8 covers almost the entire outer peripheral surface of the flange portion 15. Closely fixed in the state.

  The front surface side of the covering packing 8 is formed in a thick plate shape and is configured as a packing body 82b. On the front and back surfaces of the packing body 82b, a plurality of concavity and convexity portions for adhesion (FIG. 2) 82c continuous in the circumferential direction. Are integrally formed.

  The in-tank fixture 2 in the apparatus main body 10 includes a cylindrical cylindrical body 21 whose both ends in the axial direction (front-rear direction) are open, and a flat plate-like front flange portion 25 provided on one outer periphery of the cylindrical body 21. The cylindrical body 21 and the front flange portion 25 are integrally formed of hard resin such as polyacetate resin.

  On the outer peripheral surface of the cylindrical body 21, a male screw portion 24 is formed that is screwed into the female screw portion 14 of the tank external fixture 1. By screwing the male screw portion 24 into the female screw portion 14, 2 is coupled to the outside tank fixture 1.

  Between the rear side surface of the front flange portion 25 and the inner side surface of the side wall Ta of the bathtub T, a flat ring-shaped elastic packing 83 that is fitted onto the cylindrical body 21 of the in-tank fitting 2 is interposed. . The elastic packing 83 is formed from, for example, synthetic rubber.

  Further, between the rear side surface of the front flange portion 25 and the elastic packing 83, a flat plate ring-shaped buffer member 84 that is fitted onto the cylindrical body 21 of the in-tank fixture 2 is interposed. The buffer member 84 is formed of a soft synthetic resin such as a polyethylene resin having softness or elasticity.

  First, the buffer member 84 and the packing 83 are fitted on the cylindrical body 21 of the in-tank fixture 2.

  And in the state which has arrange | positioned the front part flange part 15 of the tank outer attachment 1 along the peripheral part of the attachment hole H of the side wall Ta of the said bathtub T, the inner attachment tool 2 cylinder 21 from the inner side of the side wall Ta. If the male threaded portion 24 on the outer peripheral surface of the mounting hole H is inserted into the female threaded portion 14 of the tank external fixture 1, the flange 15 in the tank external fixture 1 and the front of the tank internal fixture 2 are inserted. The flange portion 25 is coupled and fixed with the side wall Ta interposed therebetween.

  In this assembled state, the buffer member 84 and the packing 83 are elastically deformed, and the adhesion surface of the seal portion between the packing 83 and the front flange portion 25 is increased to ensure water tightness.

  Further, if a rib rib (not shown) is provided on the rear side surface of the front flange portion 25, the contact pressure per unit area is increased, and the inner side surface of the side wall Ta of the bathtub T, the front lunge portion 25, The water tightness during the improvement.

  Further, when the male threaded portion 24 in the tank inner fitting 2 is screwed into the female threaded portion 14 in the outer tank fitting 1, the stress on the packing 83 due to the pressure contact of the protruding ribs is dispersed and absorbed by the buffer member 84. Therefore, stress concentration on the packing 83 is avoided, and tearing (thread breakage) is effectively prevented.

  The flow path forming member 3 in the apparatus main body 10 includes a flow path forming member main body 4 and a lid body 6.

  The flow path forming member main body 4 has an elongated cylindrical cylindrical body 41 and a partition chamber member 5 connected to one end of the cylindrical body 41. The both 41 and 5 are integrated with a hard synthetic resin. Molded.

  The cylindrical body 41 is tightly fitted to the inner cylindrical body 11 in the outer tank fixture 1 so as to communicate with the inner cylindrical body 11 and constitute a part of the first flow path A. In addition, an annular space between the outer peripheral surface of the cylindrical body 41 and the inner peripheral surface of the cylindrical body 21 of the in-tank fixture 2 constitutes a part of the second flow path B.

  A space between the outer peripheral surface of the cylindrical body 11 and the inner peripheral surface of the inner cylindrical body 11 is sealed with the O-ring 81.

  In the partition chamber member 5, a disc-shaped bottom plate 51 coupled to one end of a cylindrical body 41 and an outer peripheral wall 52 surrounding the outer periphery on the front side of the bottom plate 51 are integrally formed. The front flange portion 25 of the in-tank fixture 2 is fitted, and the front surface of the front flange portion 25 is in close contact with the rear surface of the bottom plate 51.

  As shown in FIGS. 5, 6, and 14, the rear surface of the bottom plate 51 in the compartment chamber member 5 is positioned coaxially with the outer peripheral wall 52 and on the opening edge of the cylinder 21 of the in-tank fixture 2. An annular wall portion 53 to be internally fitted is formed.

  The annular wall 53 forms an annular space in communication with the second flow path B around the elongated cylindrical body 41 in the flow path forming member main body 4.

  An annular packing 85 is interposed between the outer peripheral portion of the annular wall 53 and the opening edge of the cylindrical body 21.

  As shown in FIGS. 5, 6, and 14, the portion surrounded by the annular wall portion 53 in the bottom plate 51 is divided into two portions on the left and right sides, and on the upper and lower portions on one side in the left-right direction. The first suction valve installation port 54a and the first discharge valve installation port 55a are formed with the partition wall 56a interposed therebetween, and the second suction valve installation port 54b is provided at the upper and lower portions on the other side, respectively. And the second discharge valve installation port 55b are formed with the partition wall 56b interposed therebetween.

  The first and second suction valve installation ports 54a and 54b and the first and second discharge valve installation ports 55a and 55b also serve as hot water circulation holes.

  As shown in FIG. 4 and FIG. 14, a first suction valve 7a and a first discharge valve 8a are respectively provided in the first suction valve installation port 54a and the first discharge valve installation port 55a. The second suction valve installation port 54b and the second discharge valve installation port 55b are respectively provided with a second suction valve 7b and a first discharge valve 8b.

  The first suction valve 7a and the first discharge valve 8a are integrally formed, and are disposed so as to straddle the partition wall 56a at the center in the vertical direction.

  As shown in FIGS. 4 and 14, the first suction valve 7 a and the first discharge valve 8 a have one slit 71 a on the rear surface side in the vertical direction with respect to the valve seat 71 facing the front surface of the bottom plate 51. Are inserted and supported by pins 72 a protruding from the bottom plate 51.

  The first suction valve 7a is elastically deformed rearward when hot water is sucked to open the first suction valve installation port 54a, while the first discharge valve 8a is elastically deformed forward when hot water is discharged. It is set to open the first discharge valve installation port 55a.

  Further, the second suction valve 7b and the first discharge valve 8b are also integrally formed in the same manner as described above, and are disposed so as to straddle the partition wall 56b at the center in the vertical direction.

  As shown in FIGS. 4 and 14, the second suction valve 7 b and the second discharge valve 8 b also have one slit 71 b on the rear surface side in the vertical direction with respect to the valve seat 71 facing the front surface of the bottom plate 51. Are inserted and supported by pins 72 b protruding from the bottom plate 51.

  The second suction valve 7b elastically deforms backward when hot water is sucked to open the second suction valve installation port 54b, while the second discharge valve 8b elastically deforms forward when hot water is discharged and The 1 discharge valve installation port 55b is opened.

  The first suction valve 7a and the first discharge valve 8a and the second suction valve 7b and the second discharge valve 8b are formed with press-fit holes 73a and 73b of the pins 72a and 72b, respectively, and the valve seat 71 In addition, pin press-fit holes 74a and 74b are formed.

  Further, as shown in FIGS. 4, 13, and 14, on the front side of the first suction valve 7a and the second suction valve 7b, in the valve seat 71, the first suction valve 7a and the second suction valve 7b are connected with hot water. Deformation prevention ribs 58 and 58 for preventing forward deformation at the time of discharge are provided, respectively, and on the rear side of the first discharge valve 8a and the second discharge valve 8b, FIG. 4, FIG. 13 and FIG. As shown in FIG. 5, deformation preventing ribs 59 and 59 are formed to prevent the first discharge valve 8a and the second discharge valve 8b from being deformed rearward when hot water is sucked.

  Further, on the front side of the first discharge valve 8a and the second discharge valve 8b, a rib 60 with an inclined surface that prevents the first discharge valve 8a and the second discharge valve 8b from being excessively deformed forward when hot water is discharged (see FIG. 13) is formed.

  The front end opening of the elongated cylindrical tube 41 in the flow path forming member main body 4 is closed half in the left-right direction so as not to communicate with the first suction valve installation port 54a and the first discharge valve installation port 55a. On the other hand, only the other half in the left-right direction is opened so as to communicate only with the second suction valve installation port 54b and the second discharge valve installation port 55b, and the second suction valve installation port 54b and the second A flow path guide chamber 57 surrounding the discharge valve installation port 55b is formed (see FIGS. 5 to 7 and FIG. 14). That is, the first flow path A communicates with the second suction valve installation port 54b and the second discharge valve installation port 55b.

  The lid 6 is formed in a disk shape from a hard synthetic resin corresponding to the front opening of the outer peripheral wall 52 in the compartment member 5, and is joined to the front opening end face of the outer peripheral wall 52.

  One of the rear surface of the lid body 6 and the front surface of the bottom plate 51 in the compartment member 5, for example, the rear surface of the lid body 6 has one end in the left-right direction as shown in FIGS. A transverse rib rib 61 that bisects the space between the front surface of the bottom plate 51 and the rear surface of the lid body 6 in the vertical direction, and a space above the partition rib 61 in the left and right directions. A vertical partition rib 62 is formed.

  The horizontal rib rib 61 is located at a position that separates between the first suction valve installation port 54a and the first discharge valve installation port 55a and between the second suction valve installation port 54b and the second discharge valve installation port 55b. It corresponds.

  Thereby, the upper space of the horizontal rib rib 61 communicates with the first suction valve installation port 54a and the second suction valve installation port 54b, and is configured as a suction flow path through which hot water at the time of suction passes, The lower space of the horizontal rib rib 61 is configured as a discharge passage that communicates with the first discharge valve installation port 55a and the second discharge valve installation port 55b and through which hot water during discharge passes.

  The vertical rib rib 62 corresponds to a position separating the first suction valve installation port 54a and the first discharge valve installation port 55a from the second suction valve installation port 54b and the second discharge valve installation port 55b. .

  In the upper part of the front surface of the lid 6, a group of suction ports 6 a, 6 b made of small holes is formed penetrating in a state of being divided into left and right with the vertical rib rib 62 as a boundary. One suction port 6a corresponds to the first suction valve installation port 54a, while the other suction port 6b corresponds to the second suction valve installation port 54b.

  That is, the suction port 6 a corresponds to the second flow path B, and the suction port 6 b corresponds to the first flow path A.

  A substantially lower half portion of the outer peripheral wall 52 of the partition chamber member 5 is opened corresponding to the lower space of the horizontal rib rib 61, and the opened portion is an arc-shaped discharge port 6c. That is, the discharge port 6c corresponds to the first discharge valve installation ports 55a and 55b, and discharges hot hot water along the side wall of the bathtub T.

  Further, the partition chamber member 5 and the lid body 6 in the flow forming member 3 are provided with a plurality of (for example, three) bowl-like grooves 36 for attaching the filter member 9 on the outer peripheral surface thereof in the circumferential direction, etc. It is formed in the arranged position.

  The filter member 9 is disposed so as to cover the outer peripheral surface of the compartment member 5 from the front surface side of the lid body 6, and is formed into a bowl shape by, for example, synthetic resin, and is formed on the inner peripheral surface of the outer peripheral wall 9a. Are formed with a plurality of (for example, three) engaging projections 96... Corresponding to the flange-like grooves 36 on the outer peripheral surface of the flow path forming member 3.

  Then, by inserting these engaging projections 96... Into the hook-shaped grooves 36... And rotating and shifting, the filter member 9 is detachably mounted on the flow path forming member 3.

  The front wall of the filter member 9 is formed with a suction opening 95 composed of a large number of small holes penetrating in the front-rear direction, and the lower half of the outer peripheral wall 9a corresponds to the discharge port 6c. Thus, a discharge opening 97 is formed.

  The outer peripheral wall 52 of the partition chamber member 5 in the flow path forming member 3 and the outer peripheral surface of the front flange portion 25 of the in-tank fitting 2 are for coupling the flow path forming member 3 to the in-tank fitting 2. It is configured as a binding site for each other.

  As shown in FIG. 7 and FIG. 8 on one of the outer peripheral wall 52 of the compartment member 5 and the front flange portion 25 of the in-tank fitting 2, for example, the inner peripheral surface of the outer peripheral wall 52 of the compartment member 5. Further, a plurality of (for example, three) locking projections 31... For coupling projecting inward in the radial direction are formed to be equally distributed in the circumferential direction, and the protruding direction of each locking projection 31 A small groove 31a for moderation is formed in the center in the width direction (circumferential direction) on the distal end surface (inward in the radial direction).

  On the other hand, that is, on the front outer peripheral edge of the front flange portion 25 of the in-tank fixture 2, as shown in FIGS. A plurality of cutout openings 26 are formed to allow the stop protrusions 41 to enter.

  In addition, on the outer peripheral surface of the front flange portion 25 of the in-tank fixture 2, the partition chamber member 5 is moved around the axis in a state in which the locking projection 31 of the partition chamber member 5 enters the notch opening 26 from the front. An engaging groove portion 27 is formed that is detachably engaged when operated to rotate in one direction (for example, counterclockwise direction), and the planar shape is a bowl-shaped groove with the notch opening 26.

  The number of the cutout openings 26 and the engagement groove portions 27 may be the same as the number of the locking projections 31..., But the circumferential direction of the flow path forming member 3 is necessary because the discharge port 6 c needs to be directed downward. In order to be able to select the position when determining the position in the (around the axis direction), six pieces that are an integral multiple of the number of the engaging protrusions 31. Of course, the number can be increased further.

  As shown in FIGS. 9 and 11, the bottom surface of each engaging groove 27 is a small portion that fits into the small groove 31 a when the locking protrusion 31 is engaged and provides moderation at the engaging position. A protrusion 27a is formed.

  By the way, in this example, as shown in FIGS. 9 to 11, when the flow path forming member main body 4 is rotationally shifted in one direction around the axis, the engaging groove 27 is engaged with the locking protrusion 31. Not only when the flow path forming member main body 4 is rotated in the other direction around the axis (for example, in the clockwise direction), the engaging groove portion 28 that engages and disengages with the engaging protrusion 31 is formed. In addition, a small protrusion 28a that fits into the small groove 31a of the locking protrusion 31 and imparts moderation at the engagement position is also formed on the bottom surface of the engagement groove 28.

  On the other hand, as shown in FIG. 6, one screw insertion hole 63 penetrating to the compartment member 5 is formed on the front surface of the lid body 6, and the flow passage forming member 3 is formed in the screw insertion hole 63. A screw 64 for preventing rotation of the tub is attached to the in-tank fixture 2.

  In addition, a plurality of screw holes 29... Screwed into the screws 64 are equally arranged in the circumferential direction on the front surface of the front flange portion 25 of the in-tank fitting 2. These screw holes 29... Are selected so as to fit the optimum position as much as possible when determining the circumferential position of the flow path forming member 3.

  Although the attachment procedure to the bathtub T of the warm water mouth apparatus which consists of the said structure is not specifically limited, For example, it assembles | assembles in the following procedures.

  First, in a state where the front packing portion 15 of the tank outer fitting 1 is covered with the covering packing 8, the tank outer fitting 1 is disposed corresponding to the mounting hole H from the outside of the side wall Ta of the bathtub T, A buffer member 84 and a packing 83 that are externally fitted to the cylindrical body 21 are arranged on the rear surface side of the front flange portion 25 in the tank fixture 2.

  In this state, the tubular body 21 of the in-tank fitting 2 is inserted into the mounting hole H from the inside of the side wall Ta of the bathtub T, and the male threaded portion 24 of the tubular body 21 is screwed into the female threaded portion 14 of the outside-tubing fixture 1. For example, the tank outer fixture 1 and the tank inner fixture 2 are coupled in a communicating state, and are fixed in a state in which the side wall Ta of the bathtub T is sandwiched between the front flange portions 15 and 25.

  Next, the flow path forming member 3 is attached to the in-tank fixture 2. In addition, the flow path forming member 3 is a lid body in a state where the suction valves 7a and 7b and the discharge valves 8a and 8b are set between the flow path forming member main body 4 and the lid body 6 at a factory shipment stage, for example. 6 is welded and fixed to the flow path forming member main body 4.

  In this state, after the three engaging protrusions 31 in the flow path forming member 3 are entered into the three notch openings 26 in the in-tank fixture 2, the flow path forming member 3 is rotated, The locking projection 31 is engaged with the engagement groove 27 (or the engagement groove 28) of the in-tank fixture 2.

  At this time, six notch openings 26 and engagement groove portions 27 (28) in the in-tank fixture 2 are formed with respect to the three locking projections 31 in the flow path forming member main body 4. Three cutout openings 26 and engagement groove portions 27 (28) that match the appropriate positions of the member 3 are selected.

  Specifically, in order to discharge hot water downward from the discharge port 6c along the inner surface of the side wall Ta of the bathtub T, the flow passage forming member body 4 is rotated so that the discharge port 6c is positioned downward. The moving position is set, and the three notch openings 26... That match this are selected, and the three locking projections 31... Are shown in FIG.・ Enter.

  From this state, the flow path forming member 3 is rotated to engage the three locking projections 31... With the engagement groove 27 (28) as shown in FIG. .

  That is, if the operation and the rotation operation of pressing the flow path forming member 3 backward are performed, the flow path forming member 3 can be easily coupled to the in-tank fixture 2 via the locking protrusion 31 and the engaging groove 27 (28). As compared with conventional ones that are screwed at a plurality of locations, the connection workability is improved.

  In addition, the number of parts can be reduced by eliminating the need for screws for connection, and it is not necessary to provide a large number of screw receiving bosses on the entire circumference of the front flange portion 25 of the in-tank fitting 2, which makes it compact. There is an advantage that can be manufactured.

  Even when the flow path forming member 3 is rotated in the direction opposite to the above, the locking projection 31 is configured to engage with the engagement groove 28 (27). Thus, the selection range can be set as close to the desired position as possible.

  After that, if the screw 64 is inserted into the screw insertion hole 63 of the lid 6 and the compartment member 5 and is screwed into the screw hole 29 of the in-tank fitting 2, the in-tank fitting 2 of the flow path forming member 3 is obtained. Unintentional release of engagement with is prevented. Of course, not only the fastening means by the screw 64 but also means using a pin, for example, can be adopted.

  Finally, when the filter member 9 is covered from the front of the flow path forming member 3 and the engagement protrusion 96 of the filter member 9 is engaged with the bowl-shaped groove 36 on the outer peripheral surface of the partition chamber member 5, the filter member 9 is Mounted on the compartment member 5.

  In the hot water outlet device P assembled in the bathtub T in this way, piping from the hot water heater outside the bathtub T is connected to the outer pipe connection portions 1a and 1b of the outside-mounting fixture 1 to constitute a bathtub system.

  In this bathtub system, when hot water is supplied and stored in the bathtub T, the hot water is supplied to both of the two outer pipe connecting portions 1a and 1b, and the first and second flow paths A and B are supplied. And flows into the flow path forming member 3.

  While the discharge valve 8b is deformed forward by the pressure of the hot water flowing through the inner space of the cylinder 41 in the first flow path A, that is, the flow path forming member 3, the second flow path B, that is, the flow path The discharge valve 8a is also deformed forward by the pressure of the hot water flowing through the annular space between the cylinder 41 in the forming member 3 and the cylinder 21 in the in-tank fixture 2.

  As a result, the left and right discharge valve installation ports 55a and 55b are opened, respectively, and the hot water passes through the discharge valve installation ports 55a and 55b, and the discharge port 6c and the discharge opening 97 of the filter member 9 on the outer peripheral wall of the partition chamber member 5. From below, it is discharged downward. As a result, hot water is supplied along the side wall Ta of the bathtub T, and hot water is stored in a safe state.

  Moreover, when performing the reheating process which reheats the hot water of the bathtub T, the side connected to the outgoing pipe of the hot water heater among the 1st and 2nd flow paths A and B in the hot water outlet apparatus P This channel functions as a discharge channel, the channel connected to the return pipe functions as a suction channel, and so-called forced circulation of hot water is performed.

  For example, when pipe connection is made such that the first flow path A is a discharge flow path and the second flow path B is a suction flow path, the return pipe of the hot water supply device and the second pipe are used when hot water in the bathtub T is sucked. Due to the negative pressure of the flow path B, the space between the bottom plate 51 of the partition chamber member 5 and the lid body 6 becomes negative pressure. For this reason, the suction valve 7a in the flow path forming member 3 is deformed backward by the water pressure of the hot water in the bathtub T, and the suction valve installation port 54a is opened. Thereby, the hot water in the bathtub T flows into the partition chamber member 5 through the suction opening 95 of the filter member 9, is returned to the water heater through the second flow path B, and is reheated.

  When discharging the heated hot water, the hot water supplied from the water heater passes through the first flow path A and deforms the discharge valve 8b forward. As a result, the discharge valve installation port 8b is opened, and the reheated hot water is discharged from the discharge port 6c and the discharge opening 95 of the filter member 9 in the outer peripheral wall of the partition chamber member 5 downward. Will be returned in a safe state.

  By the way, when removing from the side wall Ta of the bathtub T at the time of replacement or maintenance of the hot water outlet device P, the filter member 9 is removed from the flow path forming member 3, and then the anti-rotation screw 64 is removed. If the path forming member 3 is rotated in the opposite direction, the engagement between the locking projection 31 and the engaging groove 27 (28) is released. Therefore, if the flow path forming member 3 is pulled forward, The coupling with the in-tank fixture 2 is released. Then, the in-tank fitting 2 can be unscrewed and separated from the out-tank fitting 2.

  In addition, in the said embodiment, the latching protrusion 31 was provided in the internal peripheral surface of the outer peripheral wall 52 of the partition chamber member 5, and the engagement groove parts 27 and 28 were provided in the front flange part 25 in the tank attachment tool 2. However, if, for example, the front flange portion 25 of the in-tank fitting 2 is externally fitted to the outer peripheral wall 52 of the compartment member 5, the locking protrusion 31 is arranged in front of the in-tank fitting 2. It is possible to adopt various deformation structures, such as providing in the flange portion 25 and providing the engaging groove portions 27 and 28 on the outer peripheral wall 52 side of the compartment member 5.

  Further, regarding the valve structure, the flow path structure, and the like in the flow path forming member 3, any structure can be introduced as long as it does not interfere with the coupling structure with the flow path forming member 3 in-tank fixture 2. .

It is a disassembled perspective view which shows the hot water port apparatus for bathtubs concerning embodiment of this invention. It is sectional drawing which similarly shows a hot water port apparatus in the assembly | attachment state. It is the perspective view which similarly looked at the filter member of the hot-water mouth apparatus from back. It is a disassembled perspective view of the flow-path formation member of a hot-water mouth apparatus similarly. It is a front sectional view of a channel formation member similarly. It is a rear view of a channel formation member similarly. It is the perspective view which similarly looked at the flow-path formation member from back. It is the perspective view which looked at the formation part of the latching protrusion in a flow-path formation member similarly from back. It is the perspective view which similarly looked at the in-tank fixture of the warm water mouth apparatus from back. Similarly it is a rear view of the in-tank fixture. It is a rear view which similarly shows the formation site | part of the engagement groove part in a fixture in a tank. (A) is a rear view which shows the state which made the latching protrusion approach the notch opening, (b) is a rear view which shows the state which engaged the latching protrusion with the engagement groove part. It is sectional drawing which shows the outline | summary of the arrangement | positioning site | part of a valve. It is the disassembled perspective view which looked at the arrangement | positioning site | part of a valve from back. It is explanatory drawing of the principal part of the conventional hot-water port apparatus for bathtubs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer tank attachment tool 2 In-tank attachment tool 3 Flow path formation member 6a, 6b Suction port 6c Discharge port 7a, 7b Suction valve 8a, 8b Discharge valve 9 Filter member 10 Apparatus main body 25 Front flange part 26 of a tank inner tool 26 Notch opening 27, 28 Engaging groove 31 Locking projection 52 Outer peripheral wall of flow path forming member 64 Non-rotating means A First flow path B Second flow path H Mounting hole P Hot water inlet device for bathtub T Bathtub Ta Wall

Claims (4)

In the hot water outlet apparatus for a bathtub, which is attached to the bathtub wall in a penetrating state and supplies hot water supplied from a water heater installed outside the bathtub into the bathtub so as to be circulated.
An apparatus main body having a discharge port to the hot water bathtub and a hot water suction port in the bathtub, and leading two flow paths of the external fixture connected to the water heater to the discharge port and the suction port; It has a filter function for hot water from the bathtub, and comprises a filter member mounted at a predetermined location of the apparatus body,
The apparatus main body passes through the wall portion from the inside of the bathtub and is connected to the external fixture and connected to the external flange and the front flange portion for coupling in the internal fixture And a circular flow path forming member coupled to each other,
A plurality of locking projections equally distributed in the circumferential direction are formed on either the front flange portion of the in-tank fixture or the outer peripheral wall portion of the flow path forming member, and the other is a circular shape. A notch opening that is equally distributed in the circumferential direction and that makes the locking protrusion relatively approach in the axial direction by a pressing operation from the front against the front flange of the in-tank fixture, and a state in which the locking protrusion has entered the notch opening A plurality of engaging groove portions that are detachably engaged with the respective locking projections are formed along with the change of the locking projections when the flow path forming member is rotated around the axis. A hot water outlet device for a bathtub.   The number of the cutout openings and the engagement groove portions is an integral multiple of the locking protrusion, and the cutout openings and the engagement groove portions correspond to the rotational positions of the flow path forming member in the circumferential direction with respect to the in-tank fixture. The hot water outlet apparatus for bathtubs according to claim 1, wherein the hot water outlet apparatus is selected.   The hot water outlet apparatus for a bathtub according to claim 1 or 2, wherein the engagement groove portion is provided on both sides in the circumferential direction with the notch opening in the middle. The hot-water port apparatus for bathtubs in any one of Claims 1-3 provided with the rotation prevention means of the flow-path formation member with respect to the front part flange part of the said in-tank fixture.

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