JP6623049B2 - Hot water adapter for bathtub - Google Patents

Description

  The present invention relates to a hot water supply adapter for a bathtub in which a mechanism for generating fine bubbles such as microbubbles is incorporated.

  In recent years, even in general homes, bathing can be performed by generating microbubbles (including nanobubbles) that are microbubbles with a diameter of several tens of μm or less in the hot water in the bathtub for the purpose of improving the bathing effect, massage effect, diet effect, etc. Such bathing facilities may be adopted.

  As an apparatus for generating a macro bubble in a bathtub, for example, a hot water supply adapter with a micro bubble supply function shown in Patent Documents 1 and 2 is well known.

  Such a hot-water supply adapter is assembled in a penetrating state on the side wall of the bathtub and includes a portion protruding into the bathtub (a protruding portion in the tank). The protruding portion in the tank is provided with a discharge port for discharging hot water, a suction port for sucking hot water, and a jet port for discharging hot water mixed with microbubbles (microbubble water). The member (body) assembled outside the bathtub of the hot water supply adapter is provided with a forward pipe joint, a return pipe joint, and an intake pipe joint. Hot water is supplied from the water heater to the forward pipe joint. The return pipe is connected to the return pipe joint, the return pipe for returning hot water from the hot water adapter to the water heater is connected, and the intake pipe for supplying air to the hot water adapter is connected to the intake pipe joint. ing. When a bubble occurs, hot water in the bathtub is sucked into the hot water supply adapter from the suction port and returned to the hot water supply device via the return pipe, while the hot water supplied from the hot water supply device to the hot water supply adapter via the return pipe is sucked into the hot water supply water. Air sucked into the hot water supply adapter through the pipe is mixed, and the bubble mixed water (microbubble water) is jetted from the jet nozzle into the bathtub.

JP 2010-164275 A JP 2010-207678 A

  By the way, in the conventional hot-water supply adapter with a bubble generating function shown in Patent Documents 1 and 2, etc., the direction of drawing out outer pipes such as the forward pipe, return pipe and intake pipe connected to the body, that is, the connecting direction of the outer pipe to the body Is limited, it becomes difficult to fit the outer tube into the adapter assembly space at the assembly site, and it is difficult to arrange the outer tube. The above-mentioned great load is applied, and the durability is lowered, and there is a problem that the pipe laying work and consequently the hot water supply adapter assembling work become difficult.

  The present invention has been made in view of the above-described problems, and can provide a hot water supply for a bathtub that can lay the outer pipe in a well-fitted state without difficulty, and can easily and smoothly perform the outer pipe laying work and the assembling work. The purpose is to provide an adapter.

  In order to achieve the above object, the present invention has the following structure.

[1] A tank protrusion disposed in the bathtub and a body disposed outside the bathtub, wherein the tank protrusion discharges hot water into the bathtub and sucks hot water in the bathtub. A suction port and a spout for ejecting microbubble water, which is hot water mixed with microbubbles, into the bathtub, and the body corresponds to each of the discharge port, the suction port, and the spout and is external A hot water supply adapter for a bathtub having first to third joints for connecting pipes of
Proximal end sides of the first to third pipe joints are rotatably attached around a rotation axis in a direction orthogonal to the axis of the body, and the first to third pipe joints are attached to the body. A hot water supply adapter for a bathtub, which is configured to be arranged at an arbitrary rotation angle.

  [2] The hot water supply adapter for bathtubs according to the preceding item 1, wherein the rotary shafts of the first to third pipe joints are arranged so as to substantially coincide with each other.

[3] The body includes a body body and the first to third pipe joints,
The first and second pipe joints are attached to first and second connection ports provided in the body body, and the third pipe joint is rotatably attached to the body body via a shaft member,
The first and second connection ports open in a direction perpendicular to the axis of the body body, and the shaft member is connected to at least one of the first and second connection ports. The hot water supply adapter for bathtubs according to the preceding item 1 or 2, wherein the hot water supply adapter is configured to be assembled to the body body.

  [4] The first pipe joint is configured as a forward pipe joint for connecting an outgoing pipe for supplying hot water from an external water heater to the body, and the second pipe joint is configured to supply hot water from the body to an external water heater. The hot water supply adapter for a bathtub according to any one of the preceding items 1 to 3, wherein the third pipe joint is configured as a joint for an intake pipe that introduces air from the outside into the body.

  According to the hot water supply adapter for bathtubs of the invention [1], since the first to third joints for connecting external pipes (outer pipes) are rotatably attached, the connection direction of the outer pipes is set to a desired direction. Can be set to For this reason, since the connection direction of the outer pipe can be adjusted appropriately according to the size and shape of the adapter assembly space, the outer pipe can be laid well with less load, improving durability, and pipe laying work. The adapter assembly work can be performed easily.

  According to the hot water supply adapter for bathtubs of the invention [2], the respective rotation axes of the first to third pipe joints are made to substantially coincide with each other. Therefore, for example, for the first and second pipes such as the forward pipe joint and the return pipe joint. Since the rotation axis of the third pipe joint such as the intake pipe joint substantially coincides with the rotation axis of the joint, the mounting position (rotation axis position) of the third pipe joint can be disposed forward, and the third pipe joint The rearward protrusion amount can be relatively reduced. Therefore, the total length of the adapter can be shortened, and the size and size can be reduced.

  According to the hot water supply adapter for bathtubs of the invention [3], it is possible to reliably realize a configuration in which the respective rotation axes of the first to third pipe joints are substantially matched.

  According to the hot water supply adapter for bathtubs of the invention [4], the above effect can be obtained more reliably.

FIG. 1 is a side view showing a hot water supply adapter for bathtubs according to an embodiment of the present invention. FIG. 2 is a front view showing the hot water supply adapter of the embodiment. FIG. 3 is a bottom view showing the protruding portion in the tank of the hot water supply adapter of the embodiment. FIG. 4 is a side sectional view showing the hot water supply adapter of the embodiment. FIG. 5 is an exploded side cross-sectional view of the hot water supply adapter according to the embodiment. FIG. 6 is a perspective view showing an L-shaped specification in the body of the hot water supply adapter for bathtubs of the embodiment. FIG. 7 is a perspective view showing an I-type specification in the body of the embodiment. FIG. 8 is an exploded side cross-sectional view of the body of the hot water supply adapter according to the embodiment. FIG. 9 is a front view showing the body main body of the hot water supply adapter according to the embodiment. FIG. 10 is a side sectional view showing the body body of the embodiment. FIG. 11 is a view showing a support member for the intake pipe joint in the hot water supply adapter of the embodiment, in which FIG. 11 (a) is a side sectional view and FIG. 11 (b) is a bottom view. FIG. 12 is a view showing a shaft member of a joint for an intake pipe in a hot water supply adapter in the embodiment, in which FIG. 12 (a) is a side sectional view and FIG. 12 (b) is a rear view.

  1-5 is a figure which shows the hot-water supply adapter which is embodiment of this invention. As shown in these drawings, the hot water supply adapter of the present embodiment is assembled in a mounting hole H provided in the side wall W of the bathtub. This hot water supply adapter is a hot water treatment that supplies hot water supplied from an outdoor water heater into the bathtub, sucks the hot water in the bathtub and sends it to the outdoor water heater, where it is reheated to supply hot water in the bathtub. In addition to the reheating process to return, performing bubble generation processing to generate microbubbles in the bathtub by ejecting microbubble water, which is hot water mixed with microbubbles (including nanobubbles), in hot water in the bathtub it can.

  The hot water supply adapter of this embodiment includes a body 1 assembled from the outside of the bathtub and an adapter head 5 assembled from the inside of the bathtub. In this specification, the inner side (left side in FIG. 1) of the hot water supply adapter along the axial center direction of the hot water supply adapter is referred to as “front side” or “front side”, and the outer side (right side in FIG. 1). Is described as “rear side” or “back side”.

  As shown in FIGS. 6 to 10, the body 1 includes a body main body 2, a substantially pipe-shaped forward pipe joint 3 a, a substantially pipe-shaped return pipe joint 3 b, and a substantially pipe-shaped intake pipe joint 3 c. Yes. In the present embodiment, the forward pipe joint 3a, the return pipe joint 3b, and the intake pipe joint 3c constitute first to third pipe joints.

  The body main body 2 includes a substantially cylindrical outer cylinder portion 21 whose front side is open and whose rear side is closed, and a cylindrical middle cylinder disposed coaxially with the outer cylinder portion 21 inside the outer cylinder portion 21. A portion 22 and a cylindrical inner tube portion 23 disposed coaxially with the middle tube portion 22 are provided inside the middle tube portion 22.

  An annular space between the outer cylinder part 21 and the middle cylinder part 22 in the body main body 2 is configured as a return flow path B, and an annular space between the middle cylinder part 22 and the inner cylinder part 23 is configured as a forward flow path A. The internal space of the portion 23 is configured as an air flow path C.

  At the rear end portion of the body main body 2, a circular forward pipe joint connection port 2a that opens in a direction orthogonal to the axis of the body main body 2 is formed, and is arranged coaxially with the forward pipe joint connection port 2a. In addition, a return pipe joint connection port 2b that opens in the opposite direction to the forward pipe joint connection port 2a is formed. The forward pipe joint connection port 2 a is connected in communication with the forward flow path A, and the return pipe joint connection port 2 b is connected in communication with the return flow path B. In the present embodiment, the first connection port and the second connection port are constituted by the forward pipe joint connection port 2a and the return pipe joint connection port 2b.

  A hollow cylindrical shaft member mounting hole 25 is formed between the forward pipe joint connection port 2a and the return pipe joint connection port 2b at the rear end of the body body 2. The shaft member mounting hole 25 has a shaft center located slightly rearward and parallel to the shaft centers of the forward pipe joint connection port 2a and the return pipe joint connection port 2b. Further, the shaft center of the shaft member mounting hole 25 is disposed corresponding to the opening region of the joint connection port 2a for the forward pipe and the joint connection port 2b for the return pipe. In other words, the shaft center of the shaft member mounting hole 25 is It arrange | positions so that it may correspond substantially with respect to the axial center of both connection port 2a, 2b.

  When the opening direction of the forward pipe joint connection port 2a is the downward direction, the opening direction of the return pipe joint connection port 2b is the upward direction, and the direction perpendicular to the plane of FIG. 8 and FIG. A notch 26 is formed on the upper end of the shaft, and the upper end of the shaft member mounting hole 25 is opened to the outside through the notch 26 from the rear to the left and right. Further, the lower end side of the shaft member mounting hole 25 is open, and is connected to the forward pipe joint connection port 2a through the lower end opening.

  Further, the intermediate portion in the vertical direction of the shaft member mounting hole 25 is connected to the air flow path C through the communication hole 27.

  As shown in FIG. 8, the forward pipe joint 3a is provided with a cylindrical connecting pipe portion 31a that protrudes in a direction perpendicular to the axis of the forward pipe joint 3a on the proximal end side. The connection pipe portion 31a is attached to the forward pipe joint connection port 2a of the body main body 2 so as to be rotatable around the axis of the connection port 2a.

  The return pipe joint 3b is provided with a cylindrical connecting pipe portion 31b that protrudes in a direction perpendicular to the axis of the return pipe joint 3b on the base end side. The connecting pipe portion 31b is attached to the return pipe joint connecting port 2b of the body main body 2 so as to be rotatable about the axis of the connecting port 2b.

  As a result, the forward pipe joint 3a and the return pipe joint 3b have the body main body as shown in FIG. 6 with the shaft centers of the forward pipe joint connection port 2a and the return pipe joint connection port 2b as fulcrums (with the base end side as a fulcrum). 2 is bent at a right angle with respect to the axis of 2 and the tip side is directed to the left or right (L-type specification state), and the tip is arranged parallel to the axis of the body 2 as shown in FIG. It is configured to be rotatable between a state in which the side is directed rearward (a state of the I type specification). Further, the forward pipe joint 3 a and the return pipe joint 3 b are configured to be fixed to the body body 2 at arbitrary rotational positions. In the body 1 of the present embodiment, the rotation axis of the forward pipe joint 3a and the rotation axis of the return pipe joint 3b are set to coincide with each other.

  In this embodiment, when the adapter is assembled, as shown in FIG. 1, one end of the forward pipe 1a is connected to the forward pipe joint 3a of the body 1, and the other end of the forward pipe 1a is connected to the hot water outlet of the water heater. Is done. Accordingly, the hot water discharged from the hot water outlet of the water heater passes through the forward pipe 1a and is introduced into the forward flow path A from the forward pipe joint 3a.

  Further, in the adapter assembled state, one end of the return pipe 1b is connected to the return pipe joint 3b of the body 1, and the other end of the return pipe 1b is connected to the suction port of the water heater. Accordingly, when the suction port of the water heater is set to a negative pressure during reheating, hot water in the return flow path B of the body 1 is sucked into the water heater through the return pipe joint 3b and the return pipe 1b. ing.

  As shown in FIG. 8, the intake pipe joint 3c is roughly divided into three parts: a support member 31 on the base end side, a filter member 32 at the intermediate part, and a protruding part 33 at the front end. Each of the portions 31 to 33 is formed in a hollow pipe shape that communicates with each other, and the tip opening portion of the projecting portion 33 communicates with the inside of the support member 31.

  An air filter (not shown) is accommodated inside the filter member 32, and foreign matters are removed from the air when the air passes through the filter member 32.

  As shown in FIG. 11, a cylindrical recess 34 is formed on the side surface of the base end portion of the support member 31. The recess 34 is arranged such that its axis is perpendicular to the axis of the intake pipe joint 3c. The inside of the recess 34 is connected to the inside of the support member 31 so that air sucked from the tip opening of the protrusion 33 is introduced into the recess 34.

  As shown in FIGS. 5 and 8, the proximal end side of the support member 31 in the intake pipe joint 3 c is inserted and disposed in the cutout portion 26 of the body body 2. In this inserted state, the opening of the recess 34 in the support member 31 is disposed so as to correspond to the forward pipe joint connection port 2 a of the body body 2.

  As shown in FIGS. 8 and 12, the shaft member 4 is inserted and disposed in the shaft member mounting hole 25 of the body body 2 via the forward pipe joint connection port 2 a of the body body 2. Further, the insertion side end of the shaft member 4 is inserted and disposed in the recess 34 in the support member 31 of the intake pipe joint 3c. In this state, the support member 31 of the intake pipe joint 3 c is movable with respect to the shaft member 4, and the intake pipe joint 3 c is configured to be able to rotate about the axis of the shaft member 4. As a result, the intake pipe joint 3c is substantially the same as the forward pipe joint 3a and the return pipe joint 3b, with the shaft center of the shaft member 4 as a fulcrum (with the base end side as a fulcrum), as shown in FIG. Is bent at a right angle with respect to the axis of the body and the tip side is directed to the left or right (L-shaped specification), and is arranged parallel to the axis of the body 2 as shown in FIG. It is configured to be freely rotatable between the facing state (I type specification). Furthermore, the intake pipe joint 3c is configured to be fixed to the body main body 2 at an arbitrary rotational position.

  Further, the shaft member 4 is formed with a flow passage hole 41 for communicating and connecting the inside of the recess 34 of the support member 31 in the intake pipe joint 3c and the communication hole 27 communicating with the air flow passage C of the body body 2. One end opening of the flow path hole 41 opens on the insertion side end surface of the shaft member 4, extends from the insertion side end surface to the intermediate position along the axis of the shaft member 4, and is bent at a right angle. The member 4 is opened at a position corresponding to the communication hole 27 of the body main body 2 on the outer peripheral surface of the member 4. As a result, no matter what rotational position the intake pipe joint 3c is arranged, the air sucked from the tip opening of the intake pipe joint 3c is introduced into the recess 34 through the inside of the intake pipe joint 3c. The air is introduced into the air flow path C from the communication hole 27 of the body body 2 through the flow path hole 41 of the shaft member 4.

  In the adapter assembled state, as shown in FIG. 1, one end of the intake pipe 1c is connected to the intake pipe joint 3c, and the other end of the intake pipe 1c is open to the atmosphere. Therefore, when the pressure in the air channel C becomes negative as described later when the bubble is generated, air in the atmosphere is introduced into the air channel C through the intake pipe 1c, the intake pipe joint 3c and the shaft member 4. It has become.

  On the other hand, as shown in FIGS. 1 to 5, the adapter head 5 is provided at the front end of the penetrating portion 6 and the penetrating portion 6 disposed in a penetrating manner in the attachment hole H of the side wall W of the bathtub, and has a drum shape or a disc shape. And a tank protrusion 7 having the shape of

  A male screw is engraved on the outer peripheral surface of the through-hole 6 in the adapter head 5, while a female screw is engraved on the inner peripheral surface of the outer cylinder portion 21 in the body 1. And as shown in FIG. 1, the penetration part 6 of the adapter head 5 is the bathtub side wall W in the state arrange | positioned so that the front-end part of the outer cylinder part 21 of the body 1 may follow the peripheral part of the attachment hole H in a bathtub outer wall surface. And is fixed by being screwed into the outer cylindrical portion 21 of the body 1 through the mounting hole W. Thereby, the peripheral part of the attachment hole H in the bathtub side wall W is clamped by the protrusion part 7 in the tank and the body 1, and the hot water supply adapter constituted by the adapter head 5 and the body 1 is assembled to the bathtub side wall W. In this assembled state, the in-tank protruding portion 7 of the adapter head 5 is disposed so as to protrude inward from the inner wall surface of the bathtub.

  A discharge port 7a (see FIG. 3) is formed on both lower sides of the outer peripheral surface of the in-tank protrusion 7 in the adapter head 5, and a suction port constituted by a large number of pores on the front side of the in-tank protrusion 7 7b (see FIG. 2) is formed. Further, a bubble ejection nozzle 71 is incorporated in the in-tank projection 7, and an ejection port 7 c at the tip of the bubble ejection nozzle 71 is arranged corresponding to the front surface of the in-tank projection 7.

  The discharge port 7a of the in-tank protruding portion 7 is connected to the forward flow path A of the body 1 in a normal state (a state other than when a bubble is generated) such as when reheating or when hot water is poured. Hot water supplied into the forward flow path A via the pipe 1a and the forward pipe joint 3a is discharged from the discharge port 7a of the in-tank protrusion 7 into the bathtub.

  Further, the suction port 7b of the protruding portion 7 in the tank is connected to the return flow path B of the body 1, and the hot water in the bathtub sucked from the suction port 7b at the time of reheating is returned to the return flow path B. It is returned to the water heater through the pipe joint 3b and the return pipe 1b.

  Further, the jet port 7c of the in-tank protrusion 7 is connected to the air flow path C when a bubble is generated or the like, and enters the air flow path C via the intake pipe 1c, the intake pipe joint 3c, and the shaft member 4. The introduced air is jetted into the bathtub from the jet port 7c of the in-tank protruding portion 7 together with hot water as will be described later.

  As shown in FIG. 2, a switching lever 72 is provided on one upper side (upper left side) of the front surface of the in-tank protrusion 7. This switching lever 72 is displaced in a front view from the position corresponding to the upper end as shown by an imaginary line in the figure (a position at 12 o'clock when compared to a clock) and slightly from the upper end to the one end side (left side) as shown by the solid line in the figure. Rotating operation or sliding operation is possible between this position (10 o'clock position). As shown by the solid line in the figure, when the switching lever 72 is moved to the left position (10 o'clock position), the hot water beam / recollection mode (bubble prohibition mode) can be used for hot water and reheating. Then, as shown in the imaginary line in the figure, when moved to the upper end position (12 o'clock position), it becomes a bubble generation mode in which microbubble water can be ejected, and either one of these two modes is selectively It can be set to.

  In the hot water supply / remembrance mode of the hot water supply adapter according to the present embodiment, the supply of air from the air flow path C to the bubble ejection nozzle 71 is prohibited and the discharge flow path A to the discharge port 7a of the in-tank protruding portion 7 is prohibited. Supply of hot water is acceptable. In the bubble generation mode, the supply of air from the air flow path C to the bubble ejection nozzle 71 is allowed, and the flow path from the forward flow path A is switched so that hot water is supplied from the forward flow path A to the bubble generation nozzle 71. It comes to be supplied. That is, in the bubble generation mode, supply of hot water from the forward flow path A to the discharge port 7a of the protruding portion 7 in the hot water tank is prohibited, and supply of hot water from the forward flow path A to the bubble ejection nozzle 71 is allowed. It has become.

  In the hot water supply adapter configured as described above, when the hot water treatment is performed by double conveyance, the switching lever 72 on the front surface of the adapter is set to the hot water / memorial mode, and the air flow path C to the bubble ejection nozzle 71 is set. The air supply is prohibited, and the hot water in the forward flow path A is supplied to the discharge port 7a. In this state, a hot water command is given to the water heater via an operation panel attached to the wall of the bathroom. As a result, hot water is discharged from both the hot water inlet and the suction port of the water heater, and the hot water is discharged from the protruding portion 7 in the tank through the forward pipe 1a and the return pipe 1b, the forward flow path A and the return flow path B, respectively. It is supplied into the bathtub from the outlet 7a and the suction port 7b. Thus, hot water is supplied in two systems.

  Depending on the type of water heater, the hot water treatment may be performed by single conveyance. In that case, hot water is not supplied from the water heater to the return pipe 1b side, and hot water is supplied only to the forward pipe 1a side. Is supplied, and hot water is supplied into the bathtub in one system.

  When the chasing process is performed, a chasing command is given to the water heater with the switching lever 72 set to the hot water / chasing mode. As a result, the hot water in the bathtub is sucked from the suction port 7b of the in-tank protruding portion 7 by the suction action of the suction port of the water heater, and the hot water is returned to the water heater via the return channel B and the return pipe 1b. The hot water returned to the water heater in this manner is reheated, supplied from the hot water inlet of the hot water heater to the forward pipe 1a, and supplied through the forward flow path A to the bathtub from the discharge port 7a of the protruding portion 7 in the tank. The

  When performing the bubble generation process, the switching lever 72 is set to the bubble generation mode so that the air in the air flow path C is supplied to the bubble ejection nozzle 71, and the hot water in the forward flow path A is discharged from the discharge port 7a. To be supplied to In that state, a memorial command is given to the water heater. Accordingly, hot water in the bathtub is sucked back from the suction port 7b of the protruding portion 7 in the tank and returned to the hot water supply device as described above, while hot water discharged from the hot water supply port of the hot water supply device is the forward pipe 7a and the forward flow path A. It is supplied to the bubble jet nozzle 71 through and is jetted into the bathtub. Further, the air flow path C is set to a negative pressure by the suction action by the ejection, and external air is sucked into the air flow path C through the intake pipe 1 c and the air is supplied to the bubble ejection nozzle 71. The air thus supplied is mixed with the hot water supplied to the bubble jet nozzle 71 as described above to become microbubble water, and the microbubble water is jetted from the jet port 7c of the bubble jet nozzle 71 into the bathtub.

  According to the hot water supply adapter of the present embodiment configured as described above, the forward pipe joint 3a, the return pipe joint 3b, and the intake pipe joint for connecting the outer pipes such as the forward pipe 1a, the return pipe 1b, and the intake pipe 1c. Since 3c is attached rotatably and the direction of each joint 3a-3c can be set freely, the connection direction of each outer tube | pipe 1a-1c can be freely adjusted to arbitrary directions. For this reason, since the connection direction of each outer tube | pipe 1a-1c can be appropriately adjusted according to the magnitude | size and shape of an adapter assembly | attachment space, each outer tube | pipe 1a-1c can be laid in an unreasonable state. Therefore, it is possible to reliably prevent problems such as excessive bending of the outer pipes 1a to 1c, and the outer pipes 1a to 1c can be laid well with a small load, thereby improving durability. At the same time, it is possible to easily perform the piping laying work and the adapter assembling work.

  In the hot water supply adapter according to the present embodiment, the rotation axis of the intake pipe joint 3c (the shaft center of the shaft member 4) corresponds to the opening region of the forward pipe joint connection port 2a and the return pipe joint connection port 2b of the body body 2. In other words, the rotation axis of the intake pipe joint 3c is made to substantially coincide with the rotation axes of the forward pipe joint 3a and the return pipe joint 3b, so that the amount of protrusion of the intake pipe joint 3c can be reduced. Therefore, it is possible to reduce the size and size.

  That is, when the intake pipe joint 3c is simply rotatably attached to the body main body 2, in order to avoid complication of the structure, the attachment position of the intake pipe joint 3c with respect to the body main body 2 is set to the forward pipe joint with respect to the body main body 2. It is preferable to set so as not to overlap the mounting positions of 3a and the return pipe joint 3b. For example, the position of the rotary shaft of the intake pipe joint 3c is generally arranged at the rear end of the body main body 2 so as not to coincide with the forward pipe joint connection port 2a and the return pipe joint connection port 2b. . As a result, the attachment position (rotary shaft position) of the intake pipe joint 3c with respect to the body body 2 is disposed relatively rearward, and accordingly, the rear protrusion amount of the intake pipe joint 3c increases, and the overall length of the adapter increases. It becomes difficult to achieve a compact size.

  Therefore, in the present embodiment, the shaft member mounting hole 25 of the body main body 2 is formed so as to correspond to the opening region of the forward pipe joint connection port 2a of the body main body 2, and the intake pipe joint 3c is formed in the body main body 2. The shaft member 4 for rotatably mounting is inserted into the shaft member mounting hole 25 and assembled. As a result, as described above, the rotation axis of the intake pipe joint 3c can be made substantially coincident with the rotation axes of the forward pipe joint 3a and the return pipe joint 3b, and the mounting position of the intake pipe joint 3c relative to the body 2 is relatively forward. Accordingly, the amount of rearward protrusion of the intake pipe joint 3c can be reduced, and the entire adapter can be made compact and compact.

  In this embodiment, when the shaft member 4 of the intake pipe joint 3c is assembled to the body main body 2, the forward pipe joint connection port 2a formed in the body main body 2 is used as a work hole, and the shaft member is connected via the connection port 2a. 4 is inserted into the body 2 and assembled. For this reason, the shaft member 4 can be reliably arranged in the opening region of the forward pipe joint connection port 2a, and as described above, the rotation shaft of the intake pipe joint 3a is substantially aligned with the rotational axis of the forward pipe joint 3a. Can be realized.

  Needless to say, in the present invention, the shaft member 4 may be assembled to the body main body 2 via the return pipe joint connection port 2b.

  Further, in the above embodiment, since the air flow path C of the body 1 is formed along the axis (center) of the body 1, the intake pipe joint 3 c can be disposed almost at the center of the body main body 1, that is, forward It can be arranged in the middle between the pipe joint 3a and the return pipe joint 3c, and the three joints 3a to 3c can be arranged in parallel, thereby simplifying the structure.

  In the above embodiment, the air flow path C is provided inside the adapter and air is supplied from the air flow path C to the bubble ejection nozzle 71. However, the present invention is not limited to this, and in the present invention, the adapter A microbubble water flow channel communicating with the jet outlet is provided inside, for example, hot water (air dissolved water) in which a large amount of air is dissolved is supplied from the water heater to the micro bubble water flow channel, and the dissolved air is You may make it eject from a spout as microbubble water. Even in this case, the same effect as described above can be obtained by attaching the joint for connecting the outer pipe for supplying the air-dissolved water so as to be rotatable like the above-described joint for the intake pipe.

  In the above-described embodiment, the inside of the adapter such as the body 1 has a triple tube structure, the inside is the air flow path C, the middle portion is the forward flow path A, and the outside is the return flow path B. The position of is not limited and may be arranged at any position. For example, the forward flow path may be disposed outside, and the return flow path may be disposed in the intermediate portion.

  Further, in the above-described embodiment, the inside of the adapter has a triple tube structure, and three flow paths are formed. However, the present invention is not limited to this, and in the present invention, the adapter is formed in a quadruple tube structure or the like. -You may form the 4th four flow paths. In this case, for example, the first flow path is the forward flow path, the second flow path is the return flow path, the third flow path is the air flow path, and the fourth flow path is the forward flow path for bubble water formation. Hot water in the bathtub is returned to the water heater via the passage (return flow path), while hot water is supplied from the water heater to the bathtub via the first flow path (outward flow path). The hot water in the bathtub is returned to the water heater via the flow path (return flow path), while the air supplied to the third flow path (air flow path) is supplied from the water heater to the fourth flow path (bubble water forward flow). The microbubble water may be formed by mixing with hot water supplied to the road), and the microbubble water may be ejected from the ejection port into the bathtub. In this case, four pipe joints are attached to the adapter corresponding to the four flow paths of the first to fourth flow paths. In the present invention, all of the four pipe joints are freely rotatable. You may attach to a body and you may make it attach three or more pipe joints including the pipe joint for air flow paths among the four pipe joints to a body rotatably.

  In the above embodiment, the case where the first to third pipe joints 3a to 3c are both arranged in the same direction in the adapter assembled state has been described as an example. However, the present invention is not limited to this. The first to third pipe joints may be arranged in different directions. For example, the forward pipe joint 3a and the return pipe joint 3b are arranged so as to be bent at a right angle in one direction (for example, the left side) with respect to the axis of the adapter, and the intake pipe joint 3c is bent at a right angle in the other direction (for example, the right side). Alternatively, the intake pipe joint 3c may be arranged parallel to the adapter axis. Further, the forward pipe joint 3a and the return pipe joint 3b may be arranged parallel to the axis of the adapter, and the intake pipe joint 3c may be arranged so as to be bent at a right angle. The forward pipe joint 3a and the return pipe joint 3b may be arranged in different directions.

  The hot-water supply adapter for bathtubs according to the present invention can be employed, for example, as a circulating metal fitting for hot-water supply with a bubble generating function in a bathtub in a general house.

1: Body 1a: Outward pipe (outer pipe)
1b: Return pipe (outer pipe)
1c: Intake pipe (outer pipe)
2: Body 2a: Joint connection port for the forward pipe (first connection port)
2b: Return pipe joint connection port (second connection port)
3a: Forward pipe joint (first pipe joint)
3b: Return pipe joint (second pipe joint)
3c: Intake pipe joint (third pipe joint)
4: Shaft member 7: In-tank protrusion 7a: Discharge port 7b: Suction port 7c: Spout port A: Outward channel B: Return channel C: Air channel W: Bathtub side wall

Claims (3)

The tank has a protruding portion in the tub and a body arranged outside the tub. , A micro-bubble water which is hot water mixed with micro-bubbles, and a jet outlet for jetting the micro-bubble water into the bathtub A hot water supply adapter for a bathtub having first to third joints that can be connected to each other,
Proximal end sides of the first to third pipe joints are rotatably attached around a rotation axis in a direction orthogonal to the axis of the body, and the first to third pipe joints are attached to the body. while that will be configured to be placed at any angle of rotation against,
The body is composed of a body main body and the first to third pipe joints,
The first and second pipe joints are attached to first and second connection ports provided in the body body, and the third pipe joint is rotatably attached to the body body via a shaft member,
The rotation axis of the first pipe joint and the rotation axis of the second pipe joint are arranged to coincide,
A hot water supply adapter for a bathtub , wherein an axis of the third pipe joint is disposed corresponding to an opening region of the first and second connection ports . Said shaft before Symbol first and the second connecting port as well as open in a direction perpendicular to the axis of the main body, through at least one of the connection ports of the first and second connection port The hot water supply adapter for bathtubs according to claim 1 , wherein the member is configured to be assembled to the body main body. The first pipe joint is configured as a forward pipe joint that connects an outgoing pipe that supplies hot water to the body from an external water heater, and the second pipe joint returns the hot water from the body to the external water heater. The bathtub hot water supply adapter according to claim 1 or 2 , wherein the third pipe joint is configured as a pipe joint, and is configured as an intake pipe joint that introduces air into the body from the outside.

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