JP2010133653A - Outer pipe connecting device of hot water supply port adaptor for bathtub - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outer pipe connecting device of a hot water supply port adaptor for a bathtub, for being applied to both of I-type and L-type specifications and free from risk of making mistake in selecting components. <P>SOLUTION: This outer pipe connecting device includes an outside-of-tub mounting member 71 disposed on an outer face of a sidewall of the bathtub T, the outside-of-tub mounting member 71 is composed of an outside-of-tub mounting member body 710 fixed to the outer face of the sidewall of the bathtub T, and outside pipe connecting sections 720A, 720B communicated with rear end port sections 710a, 710b of a flow channel in the outside-of-tub mounting member body 710 and projecting from a rear wall, and the outer pipe connecting sections 720A, 720B have joining faces 721a, 722a inclined along the direction intersecting an axis of pipe to be divided into two at a basic end section 721 side and a distal end section 722 side, and the distal end section 722 side is joined to the basic end section 721 side while selecting a state corresponding to the I-type specification and a state corresponding to the L-type specification. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an outer pipe connecting device in a hot water inlet adapter for a bathtub that is attached to a side wall of a bathtub in a penetrating state and used for pipe connection to a hot water heater installed outside the bathtub.

  In recent years, a hot water supply system for a bathtub has a hot water filling function that sends hot water boiled in a hot water heater installed outside the bathtub into the bathtub, and sucks the hot water in the bathtub and sends it to the hot water heater. Many of them are equipped with a reheating function for returning to the bathtub as high-temperature water.

  In such a hot water supply system, a hot water supply adapter is attached to the bathtub side wall in a state of penetrating the bathtub side wall for piping of a circulation flow path between the hot water heater and the outside.

  The hot water supply adapter includes an in-tank mounting member for attaching a flow path forming unit for forming a predetermined flow path to the inner surface side of the side wall of the bathtub, and an outer mounting member for sandwiching the bathtub side wall. An outer pipe, which is a pipe, is connected to the outer pipe connecting portion of the mounting member from the water heater.

The outside mounting member is generally in a state in which a main body formed into a cylindrical shape with a synthetic resin or the like, and an outer pipe connecting portion communicating with a pair of rear end port portions in the main body protrude outward from the back wall of the main body (For example, refer to Patent Document 1),
JP-A-11-337186

  By the way, in this type of piping, a so-called I-type specification is adopted in which the outer connecting portion of the tank outer mounting member protrudes straight from the rear end port portion of the main body along the tube axis. When connecting an outer pipe from a water heater, and a so-called L-shaped specification, in which the outer connecting portion of the tank outer mounting member extends from the rear end port portion of the main body in a direction bent substantially at right angles to the pipe axis. There are two cases in which an outer pipe from a water heater is connected to the outer pipe connecting portion.

  However, in the conventional tank outer mounting member, the protruding state of the outer pipe connecting portion is individually manufactured for the one corresponding to the I type specification and the one corresponding to the L type specification. In addition, there was a risk that the construction work would be significantly delayed if the selection of these two types was mistaken during construction.

  The present invention has been made in view of the above circumstances, and can be adapted to both I-type and L-type specifications with a single type of tank external mounting member, can reduce the number of members to be prepared, and cause occurrence of member selection mistakes, etc. It is an object of the present invention to provide an outer pipe connection device in a hot water supply adapter for bathtubs that does not incur the risk of inconvenience.

  The above problem is solved by the following means.

(1) In the outer pipe connecting device in the hot water inlet adapter for bathtubs, provided with a tank outer mounting member provided on the outer side of the side wall of the bathtub, and forming a flow path between the inside and the outside of the bathtub,
The outer tank mounting member communicates with an outer tank mounting member main body fixed to the outer side of the side wall of the bathtub, and a rear end port portion of the flow path in the outer tank mounting member main body. It consists of an outer pipe connecting part protruding from the rear wall,
The outer pipe connecting portion is divided into two parts, a proximal end side and a distal end side, with a joining surface inclined along a direction intersecting the pipe axis of the rear end port portion. A state corresponding to the I type specification in which the inclined joint surface on the distal end side is joined to the inclined joint surface on the proximal end side in a state in which the pipe connecting portion projects in the direction along the tube axis of the rear end port portion, and the outer tube An L-shaped specification corresponding state in which the inclined joint surface on the distal end side is joined to the inclined joint surface on the proximal end side in a state where the connection portion is bent with respect to the tube axis of the rear end port portion is configured to be selectable. An outer pipe connecting device in a hot water inlet adapter for bathtubs.

  (2) The outer pipe connection device in the hot-water adapter for a bathtub as described in the preceding item 1, wherein the inclined joint surfaces of the front end part and the base end part have an intersection angle of 45 degrees with respect to the pipe axis of the rear end port part. .

  (3) The outer pipe connection device in the hot water inlet adapter for a bathtub described in the preceding item 1 or 2, wherein the pair of outer pipe connection parts arranged in parallel with each other are connected to each other on the base side.

  (4) The inclined joint surface at the base end portion of the outer pipe connecting portion is provided at the base end portion through a linear portion extending in a direction orthogonal to the joint surface, and the inclined joint surface at the distal end portion is The outer pipe connection device in the hot water supply adapter for bathtubs according to any one of the preceding items 1 to 3, which is provided at the tip portion through a linear portion extending in a direction orthogonal to the joint surface.

  (5) The outer surface of the hot water adapter for a bathtub according to any one of the preceding items 1 to 4, wherein a flange around each joint surface is formed at each of the proximal end and the distal end of the outer pipe connecting portion. Pipe connection device.

  (6) The outer pipe connection device in the hot water inlet adapter for bathtubs according to the preceding item 5, wherein the flange on the base end side and the flange on the tip end side are coupled with screws.

  (7) The flange on the base end side and the flange on the tip end side are joined by a quick fastener that elastically holds both flanges in the radial direction and holds them in the tube axis direction. The outer pipe connection device in the hot water inlet adapter for bathtubs.

  According to the invention described in the preceding item (1), there exists a joint surface that is inclined along the direction in which the outer tube connecting portion of the tank outer mounting member intersects the tube axis of the rear end port portion of the tank outer mounting member main body. Since the base end portion side and the tip end portion side are divided into two, the inclined joint surface of the tip end portion is arranged at the rear end portion so that the tip end portion protrudes in the direction along the tube axis of the rear end port portion. If it joins and joins to the joint surface, the so-called I-shaped specification can be accommodated, and the inclined joint surface of the tip end is bent at the rear end so that the tip portion bends and protrudes with respect to the rear end port portion tube axis. If it joins and joins to the joint surface of a part, it can respond to what is called L type specification.

  That is, even if two types of outside-tubing attachment members having different outer tube connection portion shapes are not prepared, the above-mentioned I-type specification and L-type specification can be supported, so the number of members is reduced and management is facilitated. The risk of mistakes such as mistaking the shape and the L shape is eliminated.

  According to the invention described in the preceding item (2), since the crossing angle with respect to the tube axis of the rear end port portion at both inclined joint surfaces is 45 °, the outer tube connecting portion is connected so as to correspond to the L-shaped specification. The distal end portion is bent at an angle of 90 ° with respect to the proximal end portion.

  According to the invention described in the preceding item (3), since the pair of outer tube connecting portions arranged in parallel with each other are coupled to each other on the base side, each distal end portion of the pair is connected to each proximal end. Bonding to the part can be performed quickly.

  According to the invention described in (4) above, since both side portions in the tube axis direction sandwiching the joint portion between the proximal end side and the distal end portion side in the outer tube connecting portion are constituted by the linear portions, sufficient space is provided. As a result, the joining and joining work between the proximal end side and the distal end side can be performed without any trouble.

  According to the invention described in the preceding item (5), the base end portion and the tip end portion of the outer pipe connecting portion can be reliably coupled via both flanges.

  According to the invention described in the preceding item (6), the proximal end portion and the distal end portion in the outer tube connecting portion can be firmly coupled by screwing.

  According to the invention described in the preceding item (7), the base end portion and the tip end portion of the outer tube connection portion can be quickly coupled with the quick fastener.

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

  FIG. 1 is a partially broken plan view showing an outer pipe connecting device in a hot water inlet adapter for bathtubs according to the present invention, FIG. 2 is an exploded perspective view showing the outer pipe connecting device in the hot water inlet adapter for bathtubs, and FIG. It is a disassembled perspective view of the flow-path formation unit in the hot water inlet adapter for bathtubs.

  The outer pipe connecting device in the hot water supply adapter for bathtubs in this embodiment includes a hot water filling (hot water storage) function for supplying hot water from a hot water heater (not shown) installed outside the bathtub into the bathtub T, and the bathtub. It is applied to a bathtub hot water supply system with a reheating function that sucks hot water in T into the water heater and returns the heated high temperature water into the bathtub T. As a so-called non-polar type, the return pipe connected to the water heater and the return The same function can be obtained even if the connection to the tube is reversed.

  1 and 2, a hot water supply adapter A to which the outer pipe connection device is applied includes a flow path forming unit 10 that forms a predetermined flow path between the inside and the outside of the bathtub T, and a flow path forming unit 10. A tank mounting member 72 that is attached to the inner surface side of the side wall Ta of the bathtub T, and a tank outer mounting member 71 that is disposed on the outer surface side of the side wall Ta of the bathtub T and fixes the tank mounting member 72 to the bathtub T. In addition to the four main components including the filter member 73, the ring-shaped packing 81 on the outside of the tank, the O-ring 82, the ring-shaped packing 83 on the inside of the tank, the ring-shaped sliding sheet 84, and the lock for preventing rotation of the flow path forming unit 10 It consists of accessory parts such as pins 85.

  The flow path forming unit 10 forms a flow path as the non-polar type described above. For example, a flow path branching section 1b (see FIG. 5) and a central rear surface side of a disk section 1a formed of a hard synthetic resin are provided. A unit main body 1 integrally formed with a flow path cylinder portion 1c, a front plate 2 fitted to the front surface of the disk portion 1a, a valve seat frame 31 in a central valve portion of the disk portion 1a, and a flow path branching portion 1st and 2nd valve bodies 32A and 32B which consist of a rubber plate arrange | positioned at 1b are provided.

  A protruding edge 11 is formed integrally with the upper half of the peripheral edge of the disk portion 1a of the unit main body 1 so as to protrude forward. A compartment 10a is formed between the front surface of the portion 1a.

  As shown in FIGS. 3 to 6, an opening portion 12 constituting the valve portion 3 is formed in the central portion of the disk portion 1 a of the unit main body 1, and the opening portion 12 includes a vertical partition wall 13 and left and right horizontal rails 14. , 14 are divided into four upper and lower flow holes 15a to 15d.

  The upper and lower flow holes 15a and 15b on the left side are opened to the rear outer side, while the upper and lower flow path holes 15c and 15d are connected in a semicircular shape with the vertical partition wall 13 of the flow path branching portion 1b as a straight portion. It communicates with the inside of the cylindrical flow-path cylinder part 1c of the rear part through the chamber 10b (refer FIG. 5).

  Further, first and second discharge valve seats 33a and 33b that face the front side are formed in the lower left and right circulation holes 15b and 15d, respectively, by ribs in the middle of the opening edge.

  The valve seat frame 31 constitutes the first and second suction valve seats 34a and 34b facing the rear side by being fitted to the upper side of the opening portion 12 of the unit main body 1 from the front side, and the outer shape is approximately. It is made of a semi-circular hard synthetic resin or the like, and has a pair of left and right flow path windows 31a corresponding to the upper left and right flow path holes 15a, 15c. A piece 31b is formed, and attachment holes 31c... Are formed in the central portion of the lower edge and both the left and right sides.

  The first and second valve bodies 32A and 32B correspond to the respective shapes in which the opening 12 of the unit body 1 is divided into left and right, and the upper half is the upper side as the first and second suction valves 35a and 35b, respectively. The first and second discharge valves of the lower left and right flow holes 15b and 15d are formed as sizes fitted into the left and right flow holes 15a and 15c, while the lower half is the first and second discharge valves 36a and 36b. The seats 33a and 33b are sized to fit. Then, left and right mounting holes 32a and 32a and a lateral rib 32b between them are provided in the middle portion in the vertical direction of both valve bodies 32A and 32B.

  On the unit body 1 side, as shown in FIG. 3, pins 14a projecting forward are formed at both end portions of the left and right horizontal rails 14, 14, and the pins 14a are connected to the valve bodies 32A, 32B. The valve bodies 32A and 32 and the valve seat frame 31 are mounted on the disk portion 1a of the unit main body 1 by press-fitting into the side mounting holes 32a and the valve seat frame 31 side mounting holes 31c.

  Further, on the front side of the disk portion 1a of the unit main body 1, in addition to the separator portions 4A and 4A formed of arcuate convex portions with the straight portions on the left and right sides on the inside, the left and right inner edge sides of the upper protruding portion 11 A locking pin 11b and a front plate receiving piece 16b are formed on the front side.

  The locking pin 11b is press-fitted into the plurality of holes 2b on the front plate 2 side, and the front plate 2 is mounted facing the front side of the disk portion 1a of the unit body 1.

  Further, the unit main body 1 is formed with a pin hole 17 for inserting a lock pin located at an upper center portion thereof. Further, a notch portion 18 that opens forward is formed in the vicinity of the top end of the protruding portion of the disk portion 1a. Further, on the rear surface side of the disk portion 1a, as shown in FIG. 6 and FIG. The rear projecting edge portion 11c is integrally formed, and locking projections 19 are equally arranged on the inner peripheral surface in the circumferential direction.

  As shown in FIG. 3, the front plate 2 is formed in a circular shape corresponding to the disk portion 1a of the unit main body 21, and the upper half of the front plate 2 has left and right channel holes 15a and 15c. Suction holes 20... Consisting of a large number of small holes are formed through the opposing regions. Furthermore, locking holes 2b and 2b that are press-fitted into the locking pins 11b of the unit body 1 are formed at both side edges of the disk portion 1a. Further, notches 2c serving as inlet portions of the respective locking grooves 11a on the unit body 1 side are formed at two positions on the peripheral edge of the front plate 2.

  By inserting the lock pin 85 through the pin hole 17, the flow path forming unit 10 is prevented from rotating.

  Further, as shown in FIG. 8, arc partition ribs 21 and 21 extending in an arc shape from the position of the pin hole 17 to the left and right sides on the rear surface side of the front plate 2, and a vertical partition extending linearly directly from the pin hole 17. Ribs 22, horizontal partition ribs 23, 23 connecting the middle portion of the vertical partition 22 and the arc partition ribs 21, 21 at both left and right ends, discharge guide ribs 24, 24 branched obliquely downward outward from the respective horizontal partition ribs 23, left and right Arc-shaped lead-out guide ribs 25, 25 projecting outward from the joints of the arc partition ribs 21, 21 on both sides below the joints with the horizontal partition ribs 23, respectively.

  Further, on the rear side of the front plate 2, arcuate shallow concave portions 27, 27 corresponding to the separator portions 4A, 4A on the unit body 1 side are formed, and further, the first and second discharge valve seats on the unit body 1 side are formed. Linear V-shaped grooves 29 and 29 (FIG. 8) are provided at positions facing the lower edge portions of 33a and 33b.

  The flow path forming unit 10 is connected to the locking holes 2b and 2b of the front plate 2 with respect to the disk portion 1a of the unit body 1 to which the first and second valve bodies 32A and 32B and the valve seat frame 31 are mounted. By inserting the locking pins 11b and 11b and engaging and locking the front plate 2, the compartment 10a described above is configured between the disk portion 1a and the front plate 2.

  In this compartment 10a, as shown in FIG. 9, the projecting edge portion 11 on the unit body 1 side and the ribs 21 to 25 on the front plate 2 side constitute a partition, and the separator portion 4A on the unit body 1 side. 4 and the front plate receiver 16b are also closely attached to the rear surface of the front plate 2 to form a wall.

  Accordingly, left and right first and second suction chambers 51a and 51b surrounded by the partition ribs 21 to 23 are formed on the upper side in the partition chamber 10a, and a protruding edge is formed on the upper peripheral edge. 11 and the circular arc partition ribs 21 and 21 constitute a mixing channel 6A. The lower part of the compartment 10a is partitioned into left and right first and second discharge chambers 52a and 52b with the lower part of the vertical partition rib 22 as a virtual boundary.

  The first suction valve 52a faces the first suction chamber 52a, the second suction valve 35b faces the second suction chamber 52b, and the first discharge valve 36a faces the second discharge chamber 52a. The first discharge valve 36b faces the discharge chamber 52b.

  Further, the lower side of the compartment 10a where the projecting edge portion 11 is absent constitutes a discharge port 53 that is open to the outside in a slit shape. Further, in the first and second discharge chambers 52a and 52b, the outlet 54 and the discharge port 53 of the discharge valves 36a and 36b are separated from each other by the separator portion 4A. Both the discharge chambers 52 a and 52 b communicate with each other through a communication port 55 formed below the lower end 22 a of the vertical partition rib 22.

  In the mixing channel 6A, the notch 18 provided in the projecting edge portion 11 of the unit main body 1 opens to the outside as an introduction port 60 at the top, while the lower end of the discharge guide rib 24 and the outlet guide rib 25 are on the left and right sides. The space faces the side of the first and second discharge chambers 52a and 52b as the inlet 61 (FIG. 9).

  As shown in FIGS. 1 and 2, the in-tank mounting member 72 is made of a hard resin molded product such as polyacetylate resin, and a flange portion 72 b is integrally formed at the front end of a cylindrical portion 72 a that is open at both ends. On the outer peripheral surface of the cylindrical portion 72a, a male screw 74b that is screwed into the female screw 74a of the outside-tubing attachment member 71 is formed.

  In addition, on the front side of the flange portion 72b, a large number of bottomed lock holes 76 fitted to the tip of the lock pin 85 are provided at regular intervals in the circumferential direction.

  That is, when the lock pin 85 is forcibly press-fitted into the pin hole 17 of the flow path forming unit 10, the tip of the lock pin 85 is fitted into one of the lock holes 76. The rotational displacement of the flow path forming unit 10 is prevented.

  The ring-shaped sliding sheet 84 and the ring-shaped packing 83 are fitted into the tubular portion 72a when used.

  The filter member 73 is made of, for example, a dish-shaped molded product made of hard synthetic resin, and a plurality of suction holes 78 are formed in the front wall portion, and are attached to the front surface side of the flow path forming unit 10. It is like that.

  The outside-mounting member 71 is composed of, for example, an outside-mounting member main body 710 made of, for example, brass, switchless or synthetic resin (in this example, a hard resin molded product such as polyacetylate resin), and a pair of outside-tank mounting member main body 710. A pair of outer pipe connecting portions 720A and 720B communicating with the rear end ports 710a and 710b (see FIG. 12) are provided.

  The tank outer attachment member main body 710 is coaxially arranged on the rear side in the tube axis direction with respect to the outer cylinder part 71a, the flange part 71b formed integrally with the front edge of the outer cylinder part 71a, and the front part of the outer cylinder part 71a. It has an inner cylinder part 71c formed integrally with the outer cylinder part 71a, and a ring-shaped packing 81 having a substantially U-shaped cross section made of synthetic rubber or the like is fitted into the flange part 71b. Yes.

  An annular space 7a between the outer cylinder portion 71a and the inner cylinder portion 71c in the tank outer attachment member main body 710 communicates with the one outer tube connection portion 720A, and the inner space 7b is connected to the other inner tube portion 71c. The outer tube connection portion 720B communicates with the outer tube connection portion 720B.

  A female thread 74a is formed on the front inner peripheral surface of the outer cylindrical portion 71a, and the O-ring 82 is mounted on the front end side inner peripheral surface of the outer cylindrical portion 71a.

  As shown in FIGS. 10 to 16, the outer pipe connecting portions 720 </ b> A and 720 </ b> B in the tank outer attachment member 71 are divided into two parts, a base end portion 721 and a tip end portion 722, respectively. Are inclined along a direction intersecting with the respective tube axes of the rear end port portions 710a and 710b, for example, inclined at an angle of 45 °, and are configured as a joint surface. 722 and the respective joint surfaces 721a and 722a as they are, so that the outer tube connecting portions 720A and 720B are substantially aligned with the tube axes of the rear end port portions 710a and 710b as shown in FIGS. It can be used in specifications that protrude in the direction, so-called I-type specifications.

  Further, the base end portion 721 and the tip end portion 722 are inverted by 180 ° around the tube axes of the rear end port portions 710a and 710b to join the joint surfaces 721a and 722a, thereby connecting the outer pipes. As shown in FIGS. 14 to 16, the portions 720A and 720B are bent at approximately 90 ° with respect to the tube shaft of the rear end port portions 710a and 710b and protrude to the side, so-called L-shaped specifications. But it can be used.

  Flanges 721b and 722b are integrally formed around the joint surfaces 721a and 722a of the base end portion 721 and the tip end portion 722 in the outer pipe connection portions 720A and 720B, respectively.

  In this example, the flange 721b of the base end portion 721 in one outer tube connection portion 720A and the flange 721b of the base end portion 721 in the other outer tube connection portion 720B are integrally formed, and one outer tube connection The flange 722b of the distal end 722 in the portion 720A and the flange 722b of the distal end 722 in the other outer pipe connection portion 720B are integrally formed. Thereby, the handling of the pair of outer tube connection portions 720A and 720B, that is, the tip portions 722 and 722 of both the outer tube connection portions 720A and 720B can be assembled together.

  A screw hole 721c is formed at an appropriate position of the flange 721b on the base end 721 side, and a screw insertion hole 722c (see FIG. 15) is formed on the flange 722b on the tip end 722 side corresponding to the screw hole 721c. Is formed.

  Between the inclined joint surface 721a of the base end portion 721 in the one outer tube connection portion 720A and the inclined joint surface 722a of the distal end portion 722 in the other outer tube connection portion 720B, either of the two 721a or 722a is provided. An O-ring 724 fitted in an annular groove 725 (see FIGS. 12, 15, and 16) formed on one side is interposed.

  The flange 721b on the base end 721 side and the flange 722b on the tip end 722 side are tightened by screwing screws 800... Inserted into the screw insertion holes 722c of the flange 722b into the screw holes 721c of the flange 721b. It is supposed to be fixed.

  Of course, both the flanges 721b and 722b may be provided with screw insertion holes and tightened with screws 800 and nuts.

  Next, a procedure for attaching the hot water supply adapter A configured as described above to the side wall Ta of the bathtub T will be briefly described.

  First, the outside mounting member 71 and the inside mounting member 72 are screwed through the through hole H of the bathtub side wall Ta, and the bathtub side wall Ta is interposed between the flange portions 71b and 72b of both 71 and 72 via the packings 81 and 83. Is pinched from inside and outside.

  That is, the tubular portion 72a of the in-bath attachment member 72 is aligned with the outer cylinder portion 71a of the outside-tubing attachment member 71 arranged outside the through-hole H of the bathtub side wall Ta through the through-hole H of the bathtub side wall Ta, What is necessary is just to screw | tighten and fasten to the internal thread 74a of the external thread part 71a of the external thread of the cylindrical part 72a by rotation operation by the side of the inner attachment member 72.

  When the screw connection operation of both the attachment members 71 and 72 is completed, the forward pipe and the return pipe connected to the water heater are connected to the respective distal end portions 722 and 722 of the outer pipe connection portions 720A and 720B in the outer tank attachment member 72. To do. At this time, the outer pipe connecting portions 720A and 720B in the outer tank attachment member 72 are assembled in accordance with the connection specifications of the forward pipe and the return pipe, which will be described later.

  On the other hand, the flow path forming unit 10 and the filter member 73 in the tank mounting member 72 are mounted from the inside of the bathtub T. Since the attachment procedure of each member of the hot water supply adapter A is well known, detailed description thereof is omitted here.

  In the hot water supply adapter A thus attached to the side wall Ta of the bathtub T in a penetrating manner, as shown in FIG. 1, the first suction chamber 51a and the first suction chamber 51a located on the left side of the compartment 10a of the flow path forming unit 10 are provided. The flow path F1 connected from the one discharge chamber 52a (see FIG. 9) to the outside of the flow path cylinder portion 1c through the flow path branch chamber 1b is between the outer cylinder portion 71a and the inner cylinder portion 71c in the tank outer mounting member 71. The outer tube connection portion 720A communicates with the annular space 7a.

  Further, the flow path F2 connected from the second suction chamber 51b and the second discharge chamber 52b located on the right side of the partition chamber 10a of the flow path forming unit 10 to the inside of the flow path cylinder portion 1c through the flow path branch chamber 1b is: The outer tube connecting portion 720B communicates with the outer tube connecting portion 720B through the inner space 7b of the inner cylindrical portion 71c of the tank outer mounting member 71.

  The hot-water supply adapter A in this example is a non-polar type, and the same function can be obtained regardless of whether one of the two flow paths F1 and F2 is on the suction side or the discharge side.

  For example, in FIG. 1, if the flow path F1 is connected to the suction-side forward pipe of the water heater, the second suction valve 35b is deformed inward and opened by forced suction from the water heater side during reheating. Bath warm water flows into the flow path F2 from the front side of the two suction chamber 51b and is sent to the hot water supply side, but the lower second discharge valve 35b maintains a closed state by forced suction from the hot water supply side.

  On the other hand, since the hot water is fed from the hot water supply side to the flow path F1 that has become the discharge side, the first discharge valve 36a is deformed outward by the feed pressure, and the valve is closed in the first discharge chamber 521a. The supplied hot water that has flowed in is discharged into the bathtub T through the discharge port 53, but the upper first suction valve 35a is maintained in the open state by the feed pressure.

  Therefore, even if the flow path F1 is connected to the suction side and the flow path F2 is opposite to the discharge side, the same is obtained by sucking the hot water in the bathtub from the first suction chamber 51a and discharging the supplied hot water from the second discharge chamber 52b. That is. During hot water filling operation, hot water is supplied from the hot water supply side through both flow paths F1 and F2, so both discharge ports 36a and 36b are closed, and both the first and second discharge chambers 52a and 52b are discharged. Supply hot water is discharged from the outlet 53. Of course, at this time, both suction valves 35a and 35b are closed.

  In the hot water supply adapter A of this example, when reheating, for example, when hot water in a bathtub is sucked from the second suction chamber 51b and hot water is discharged from the first discharge chamber 52a, a substantially downward discharge flow from the first discharge chamber 52a. Is separated into the right and left, that is, the center side and the side side as indicated by white arrows by the separator portion 4A and is discharged into the bathtub T.

  At this time, since the flow path is narrowed by the separator portion 4A and the flow velocity is increased, an attracting force is exerted in the vicinity of the discharge flow, and this attracting force acts on the outlet 61 of the mixing flow path 6A. As shown, the hot water in the bathtub T flows into the mixing channel 6A from the intermittent outlet 61, is intermittently led out from the outlet 61, and is caught in the side discharge flow.

  Moreover, since the same attractive force works also at the center side, the hot water in the bathtub that has entered the second discharge chamber 52b that has been stopped continuously continuously from the communication port 55 to the first discharge chamber 52a as indicated by the black arrow. It is led out and is caught in the discharge flow on the center side.

  Therefore, the hot water from the water heater and the low temperature bathtub hot water are mixed in the vicinity of the discharge port 53, and the discharge flow is discharged into the bathtub T in a lowered temperature, and the discharge flow rate increases, thereby Since the stirring action in T also becomes large, it is prevented that the local high temperature part in bathtub T arises.

  By the way, before connecting the forward pipe and the return pipe connected to the water heater, the outer pipe connection portions 720A and 720B in the outer tank attachment member 71 are assembled according to whether the connection mode is the I type specification or the L type specification. I do.

  Specifically, when connecting the forward pipe and the return pipe connected to the water heater to the outer pipe connecting portions 720A and 720B of the outer tank attachment member 71 in the I-type specification, first, the outer pipe connecting portion After the O-rings 724 are fitted into the annular grooves 725 of the respective inclined joint surfaces 722a in 720A and 720B, the respective distal end portions with respect to the inclined joint surfaces 721a of the respective base end portions 721 in the outer pipe connecting portions 720A and 720B. The inclined joint surface 722a is joined after the 722 is brought into the posture shown in FIGS.

  In this state, in the outer tube connecting portions 720A and 720B, the flange 721b on the proximal end 721 side and the flange 722b on the distal end 722 side are inserted into the screw insertion hole 722c of one flange 722b, and the other screw 800. And screwed into the screw hole 721c of the flange 721b.

  Thereby, the front-end | tip part 722 with respect to the base end part 721 in the said outer pipe connection part 720A, 720B is along the pipe axis (tube axis of the base end part 721) of the rear end port part 710 of the tank outer attachment member main body 710. They are coupled in the I-shaped specification state that extends straight rearward.

  Further, when connecting the forward pipe and the return pipe connected to the water heater to the outer pipe connecting portions 720A and 720B of the outer tank attachment member 71 in an L-shaped specification, the O-ring 724 is fitted in the same manner as described above. After the attachment, the inclined joint surfaces 722a are joined to the inclined joint surfaces 721a of the base end portions 721 of the outer pipe connecting portions 720A and 720B after the respective distal end portions 722 are brought into the postures shown in FIGS. To do.

  In this state, similarly to the above, if the flange 721b on the proximal end 721 side and the flange 722b on the distal end 722 side of the outer pipe connection portions 720A and 720B are tightened with the screw 800, both flanges 721b and 722b are easily coupled. Is done.

  Thereby, the front-end | tip part 722 with respect to the base end part 721 in the said outer pipe connection part 720A, 720B is with respect to the pipe axis (tube axis of the base end part 721) of the rear end port part 710 of the tank outer attachment member main body 710. They are combined in an L-shaped specification state extending along the intersecting direction.

  As described above, the outer pipe connection portions 720A and 720B in the tank outer attachment member 71 are divided into two parts, the base end portion 721 and the tip end portion 722, respectively, and the respective split surfaces 721a and 722a are as shown in FIG. 11 and FIG. Since the rear end port portions 710a and 710b are inclined at an angle of 45 ° with respect to the respective tube axes, the outer tube connection portions 720A and 720B are formed as joint surfaces. Even if two types of the shape and the L shape are not prepared, one type can correspond to the specifications of the I shape and the L shape. Therefore, the number of members can be reduced by this common use, management becomes easy, and there is no possibility that the two types of outside-tubing attachment members 72 having different shapes of the outer pipe connecting portions are mistaken.

  In this example, since the inclined joint surface 721a of the base end portion 721 and the inclined joint surface 722a of the tip end portion 722 are inclined at 45 °, the tip end relative to the base end portion 721 in the L-shaped specification. Although the portion 722 is bent at a right angle and protrudes, the inclination angles of the two inclined joint surfaces 721a and 722a are not limited to 45 °.

  FIGS. 17 and 18 show a modified structure of the outer pipe connecting portions 720A and 720B of the outer tank attachment member 72. The same reference numerals are given to the same or corresponding portions as in FIGS. Therefore, those descriptions are omitted.

  17 and 18, both side portions in the tube axis direction sandwiching both joint surfaces 721a and 722a in the outer tube connection portions 720A and 720B are constituted by linear portions 750 along the tube axis. That is, the inclined joint surface 721a in the base end portion 721 is provided on the base end portion 721 via a linear portion 750 extending in a direction orthogonal to the joint surface 721a, and the inclined joint surface 722a in the distal end portion 722 The tip 722 is provided via a linear portion 750 extending in a direction perpendicular to the surface 722a.

  For example, a quick fastener 900 is used as a coupling member for coupling the flange 721b on the proximal end 721 side and the flange 722b on the distal end 722 side in the outer pipe connection portions 720A and 720B.

  In the quick fastener 900, for example, as shown in FIG. 19, a pair of arc-shaped elastic sandwiching pieces 910 and 910 that are opposed to each other are integrally formed at both ends of a flat base 61, and both the flanges 721b and 722b are formed. Are elastically held from the radial direction and are clamped from the tube axis direction. Both elastic clamping pieces 910 and 910 are elongated holes 913 fitted into the flanges 721b and 722b in a mounted state. 913 is formed along the length direction of the elastic sandwiching pieces 910 and 910. In addition, each front-end | tip part 910a and 910a of both the elastic clamping pieces 910 and 910 is each bent to the outward side, in order to make it easy to fit in the said flanges 721b and 722b.

  In this example, as shown in FIG. 17, the distal end portion 722 has a tube shaft (base end) of the rear end port portion 710 of the outside-tubing attachment main body 710 with respect to the base end portion 721 in the outer tube connection portions 720A and 720B. Direction, specifically, in a state of extending rearward in parallel with the tube axis, if the flanges 721b and 722b are connected by the quick fastener 900, the outer tube connection The parts 720A and 720B can be used with I-type specifications.

  Further, the inclined joint surfaces 721a and 722a are moved in a state shown in FIG. 18 by rotating the distal end portion 722 180 degrees around the tube axis from the position in FIG. 17 with respect to the base end portion 721 in the outer tube connecting portions 720A and 720B. If the flanges 721b and 722b are joined with the quick fastener 900 after joining, the outer pipe connecting portions 720A and 720B can be used with I-shaped specifications.

  In this case, since both side portions in the tube axis direction sandwiching both inclined joint surfaces 721a and 722a in the outer tube connection portions 720A and 720B are constituted by the linear portions 750 along the tube axis, the flanges 721b and 722b. On the other hand, the coupling operation using the quick fastener 900 can be performed without any problem in terms of space.

  In addition, in this embodiment, although the hot water supply adapter A for bathtubs which is a non-polar type and has a mixing channel was illustrated, it is not limited to this, for example, with respect to the flange 72b on the tank mounting member 72 side The present invention is widely applicable, for example, an adapter of a type to which the flow path forming unit 10 is attached.

It is a vertical side view which shows the hot water supply adapter to which the outer pipe | tube connection apparatus in the hot water supply adapter for bathtubs which concerns on 1st Embodiment of this invention was applied in the assembly | attachment state. It is a disassembled perspective view of the hot water supply adapter for bathtubs. It is a disassembled perspective view which shows the flow-path formation unit in the hot-water supply port adapter for the bathtub. It is a front view which shows the unit main body in the flow path formation unit. It is a cross-sectional arrow view along the BB line of FIG. It is a rear view of the same unit main body. It is a side view of the same unit main body. It is a rear view of the front board in the flow path formation unit. It is a vertical front view of the flow path forming unit. It is a side view which shows the tank outer attachment member in the feed adapter for the bathtub in an I-type specification state. It is a top view which shows the same tank outer attachment member in an I-type specification state. It is a plane sectional view showing the tank outside attachment member in I form specification state. It is a side view which shows the same tank outer attachment member in a L-shaped specification state. It is a top view which shows the same tank outer attachment member in a L-shaped specification state. It is side surface sectional drawing which shows the same tank outer attachment member in a L-shaped specification state. It is a plane sectional view showing the tank outside attachment member in the L form specification state. It is side surface sectional drawing which shows the modification of the outer pipe | tube connection part of the same tank outer attachment member in an I-type specification state. It is side surface sectional drawing which shows the modification of the same outer pipe connection part in a L-shaped specification state. It is a perspective view which shows the quick fastener used in FIG. 8 and FIG.

Explanation of symbols

10 ... Flow path forming unit 71 ... Outside tank mounting member 72 ... Inside tank mounting member 710 ... Outside tank mounting member body 710a, 710b ... Rear end port portion 720A , 720B ... Outer tube connection portion 721 in outer tank attachment member ... Base end portion 721a of outer tube connection portion ... Inclined joint surface 721b of base end portion of outer tube connection portion ... Outer tube connection portion The flange 722 on the proximal end side of the outer pipe connecting portion 722a ... the inclined joint surface 722b at the tip of the outer pipe connecting portion ... the flange 750 at the tip of the outer pipe connecting portion Straight section 800 ... Screw 900 ... Quick fastener A ... Hot water supply adapter for bathtub H ... Through hole T on bathtub side wall ... Bathtub Ta ... Side wall of bathtub

Claims (7)

In the outer pipe connecting device in the hot water inlet adapter for bathtubs, provided with a tank outer mounting member provided on the outer side of the side wall of the bathtub, and configured to form a flow path between the inside and the outside of the bathtub,
The outer tank mounting member communicates with an outer tank mounting member main body fixed to the outer side of the side wall of the bathtub, and a rear end port portion of the flow path in the outer tank mounting member main body. It consists of an outer pipe connecting part protruding from the rear wall,
The outer pipe connecting portion is divided into two parts, a proximal end side and a distal end side, with a joining surface inclined along a direction intersecting the pipe axis of the rear end port portion. A state corresponding to the I type specification in which the inclined joint surface on the distal end side is joined to the inclined joint surface on the proximal end side in a state in which the pipe connecting portion projects in the direction along the tube axis of the rear end port portion, and the outer tube An L-shaped specification corresponding state in which the inclined joint surface on the distal end side is joined to the inclined joint surface on the proximal end side in a state where the connection portion is bent with respect to the tube axis of the rear end port portion is configured to be selectable. An outer pipe connecting device in a hot water inlet adapter for bathtubs.   2. The outer pipe connection device for a hot water adapter for a bathtub as claimed in claim 1, wherein the inclined joint surfaces of the front end part and the base end part have an intersecting angle of 45 ° with respect to the pipe axis of the rear end port part.   The outer pipe connection device for a hot water inlet adapter for a bathtub according to claim 1 or 2, wherein the outer pipe connection part is a pair of base pipes arranged in parallel with each other on the base side.   An inclined joint surface at the base end portion of the outer pipe connecting portion is provided at the base end portion through a linear portion extending in a direction orthogonal to the joint surface, and an inclined joint surface at the distal end portion is formed on the joint surface. The outer pipe | tube connection apparatus in the hot water inlet adapter for bathtubs as described in any one of Claims 1-3 provided in a front-end | tip part via the linear part extended in the orthogonal direction.   The outer pipe connection in the hot water inlet adapter for bathtubs according to any one of claims 1 to 4, wherein a flange around each joint surface is formed at each of a proximal end portion and a distal end portion of the outer pipe connection portion. apparatus.   The outer pipe connecting device for a hot water inlet adapter for a bathtub according to claim 5, wherein the flange on the base end side and the flange on the tip end side are coupled by screwing.   The bathtub according to claim 5, wherein the flange on the proximal end side and the flange on the distal end side are joined by a quick fastener that elastically holds both flanges in the radial direction and holds them in the tube axis direction. Outer pipe connection device for hot water inlet adapter.

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