JP6802556B2 - Hot water heater adapter - Google Patents

Description

The present invention relates to a hot water supply port adapter attached to the wall of a bathtub for discharging / sucking hot water, an attachment structure thereof, and an attachment method.

In the hot water circulation type bathtub system, a hot water supply port adapter is attached to the bathtub wall, and hot water is supplied from the outdoor water heater into the bathtub or between the outdoor water heater and the bathtub via this hot water supply port adapter. I try to circulate hot water. A normal hot water supply port adapter includes an outside attachment member such as a body arranged on the outside (back side) of the bathtub, a male screw member arranged on the inside (front side) of the bathtub, and an adapter body, and the male screw member is a bathtub wall. It is assembled to the bathtub wall by being screwed into the body through the mounting hole of the above and fixing the adapter body to the male screw member with the peripheral portion of the mounting hole of the bathtub wall sandwiched between them.

Generally, since the body of such a hot water supply port adapter is attached to the outer wall surface of the bathtub, it is difficult to assemble such a hot water supply port adapter when it is structurally impossible to work around the attachment hole on the back side of the bathtub.

Therefore, as shown in Patent Documents 1 to 3, a bathtub piping construction method has been proposed in which an outer bathtub mounting member such as a body can be assembled from the inside of the bathtub. The hot water supply port adapter used in this construction method is a connection that connects the body (outside the bathtub mounting member) that can be inserted from the inside of the bathtub into the mounting hole of the bathtub wall, the adapter body that is assembled inside the bathtub, and the body and the adapter body. It is equipped with a member. Then, in order to assemble the hot water supply port adapter to the bathtub wall, the outer pipes such as the outward pipe and the return pipe are pulled into the bathtub from the outside of the bathtub through the mounting holes, and the body is connected to the lead-in end of the outer pipe inside the bathtub. After that, the body with the outer tube is passed through the mounting hole and placed on the back side of the bathtub. After that, by fixing the adapter body to the body via a connecting member, the hot water supply port adapter is assembled to the bathtub wall.

On the other hand, in a normal hot water supply port adapter in which the body is assembled from the outside of the bathtub, the outer pipe connecting portion provided in a protruding shape on the body protrudes rearward in parallel with the axis of the body. ) And an L-shape that protrudes in a direction (orthogonal direction) bent by 90 ° with respect to the axis of the body. And generally, when there is enough space on the back side of the mounting hole on the bathtub wall, an S-shaped body is adopted so that the outer pipe is pulled out rearward along the axis of the body (adapter). Lay in. If there is not enough space on the back side of the mounting hole on the bathtub wall, for example, if the outer wall is located near the back side of the mounting hole, the outer pipe cannot be pulled out along the axis of the adapter. , L-shaped body is adopted. That is, the outer pipe is pulled out in the direction orthogonal to the axis of the body and laid along the outer wall surface of the bathtub.

Patent No. 35135582 Patent No. 3981786 Patent No. 4129709

However, in the hot water supply port adapter (internal construction type adapter) that can be assembled by working from the inside of the bathtub as disclosed in Patent Documents 1 to 3, only the S-shaped body can be adopted and it is attached. There is a problem that it cannot be assembled in a place where the outer wall is arranged near the back surface side of the hole and the space on the back surface side of the mounting hole is narrow. That is, in the conventional in-construction type adapter as shown in Patent Documents 1 to 3, an L-shaped body having an outer pipe connecting portion protruding at a right angle to the axis of the body is adopted. When the outer pipe is fitted and connected to the outer pipe connection portion of the above, a part of the pipe band wound around the outer circumference of the connection end portion of the outer pipe may be arranged behind the body. Then, the pipe band interferes with the outer wall on the back side of the mounting hole, the body cannot be pushed to the predetermined position, the body cannot be mounted, and the hot water supply port adapter cannot be assembled. It was.

The present invention has been made in view of the above problems, and provides a hot water supply port adapter that can be assembled by working from the inside of the bathtub even if the space on the back surface side of the mounting hole is narrow, and a mounting structure and mounting method thereof. With the goal.

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

[1] A body that is arranged outside the bathtub and can be inserted into the mounting hole in the mounting hole of the bathtub wall, and a rear part that is inserted into the mounting hole from the inside of the bathtub with the front part arranged inside the bathtub and into the body. The body includes an adapter body to be connected, and the body includes a body body and an outer tube connecting portion for connecting an outer tube provided in a protruding shape on the body body, and from the outer tube connecting portion to the inside of the body body. It is a hot water supply port adapter that discharges hot water supplied to the adapter body from the front part of the adapter body.
The axis of the outer pipe connecting portion is arranged so as to bend with respect to the axis of the body body, and
The bending angle of the axis of the outer tube connection portion with respect to the axis of the body body is set to an angle exceeding 90 °, and the tip end side of the outer tube connection portion is arranged in front of the proximal end side. Hot water supply port adapter featuring.

[2] The hot water supply port adapter according to item 1 above, wherein the hot water distribution pipelines provided from the tip of the outer pipe connecting portion to the front end of the body body are formed so as to be bent at two or more positions.

[3] The hot water supply port adapter according to item 1 or 2 above, wherein the pipe band is wound around the outer circumference of the outer pipe fitted in the outer pipe connecting portion, and the clasp portion of the pipe band is arranged on the rear side.

[4] The hot water supply port adapter according to any one of items 1 to 3 above, wherein the bending angle of the outer pipe connecting portion with respect to the axial center of the outer tank mounting member is set to 95 ° to 110 °.

[5] A tubular joint receiving portion is provided on the body body, and an inclined joint surface inclined with respect to the axial center of the body body is provided on the tip end side of the joint receiving portion.
The outer pipe connecting portion is provided in the pipe joint attached to the joint receiving portion, and an inclined joint surface inclined with respect to the axial center of the outer pipe connecting portion is provided on the proximal end side of the outer pipe connecting portion.
By joining the inclined joint surface of the pipe joint to the inclined joint surface of the joint receiving portion, the axial center of the outer pipe protruding portion is arranged so as to bend with respect to the axial center of the body body. The hot water supply port adapter according to any one of 4.

[6] The bending angle of the orthogonal axis of the inclined joint surface of the joint receiving portion with respect to the axial center of the body body and the axial center of the outer pipe connecting portion with respect to the orthogonal axis of the inclined joint surface of the outer pipe connecting portion. The hot water supply port adapter according to item 5 above, wherein the bending angle is set to the same angle.

[7] A body that is arranged outside the bathtub and can be inserted into the mounting hole in the mounting hole of the bathtub wall, and a rear part that is inserted into the mounting hole from the inside of the bathtub with the front part arranged inside the bathtub and into the body. The body includes an adapter body to be connected, and the body includes a body body and an outer tube connecting portion that is provided in a protruding shape on the body body and to which an outer tube is connected, and the outer body is provided via the outer tube. The hot water supply port adapter mounting structure is such that hot water supplied from the pipe connection portion into the body body is discharged from the front portion of the adapter body.
The axis of the outer pipe connecting portion is arranged so as to bend with respect to the axis of the body body, and
The bending angle of the axis of the outer tube connection portion with respect to the axis of the body body is set to an angle exceeding 90 °, and the tip end side of the outer tube connection portion is arranged in front of the proximal end side. The mounting structure of the hot water supply port adapter is characterized by.

[8] A method of attaching a hot water supply port adapter in which the hot water supply port adapter according to any one of items 1 to 6 above is attached to a mounting hole of a bathtub wall.
The process of connecting the lead-in end of the outer pipe drawn from the outside of the bathtub to the inside of the bathtub through the mounting hole to the outer pipe connection portion of the body,
The process of passing the body to which the outer pipe is connected through the mounting hole and arranging it on the outside of the bathtub,
A method for mounting a hot water supply port adapter, which comprises a step of inserting the rear portion of the adapter body into a mounting hole to connect to the outside tank mounting member and arranging the front portion of the adapter body inside the bathtub.

According to the hot water supply port adapter of the invention [1], the bending angle of the axial center of the outer pipe connection portion with respect to the axial center of the body body is set to an angle exceeding 90 °, and the tip end side of the outer pipe connection portion is the base end side. Since it is arranged in front of the pipe band, the pipe band attached to the outer pipe connecting portion for fixing the outer pipe can be arranged in front, and the amount of rearward protrusion of the pipe band can be reduced accordingly. Therefore, it is possible to prevent the pipe band from interfering with peripheral members such as the outer wall, the body can be reliably assembled to the back side of the bathtub, and the body can be securely assembled even if the space on the back side of the bathtub is narrow. Further, since the body can be inserted into the mounting hole of the bathtub wall, the body can be mounted from the inside of the bathtub, and the entire adapter can be assembled by working from the inside of the bathtub, and workability can be improved.

According to the hot water supply port adapter of the invention [2], since the pipe for hot water flow provided in the body is formed so as to be bent at two or more places, the pipe may be greatly bent at one place. Compared with the case of forming, there is no sharp bend in the pipeline, and hot water can be smoothly distributed.

According to the hot water supply port adapter of the invention [3], since the clasp part of the pipe band attached to the outer pipe connection part is arranged on the outside, the body with the outer pipe is attached to the bathtub wall. It is possible to prevent the clasp from getting caught in the inner peripheral surface of the mounting hole when inserting it into the mounting hole, and the body with the outer tube can be securely inserted into the mounting hole, making it more reliable when working from the inside of the bathtub. Can be assembled to.

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

According to the hot water supply port adapter of the invention [5], the bending angle of the outer pipe connecting portion can be changed by rotating the pipe joint by 180 ° around its axis and attaching it to the joint receiving portion of the body body. Therefore, the drawing direction of the outer pipe can be changed according to the situation at the construction site, and the versatility can be improved.

According to the hot water supply port adapter of the invention [6], the axis of the outer pipe connection portion can be changed so as to be parallel to the axis of the body body. Therefore, in addition to the L-shaped specification in which the outer pipe connected to the outer pipe connection is pulled out in a direction almost orthogonal to the axis of the body body, the outer pipe is pulled out at the time axis of the body body depending on the situation at the construction site. It is also possible to adopt the form of the S-type specification that pulls out backward along the above, and the versatility can be further improved.

According to the mounting structure of the hot water supply port adapter of the present invention [7], since the main configuration is the same as that of the hot water supply port adapter of the above invention, the work in one direction from the inside of the bathtub is performed even if the space on the back side of the bathtub is narrow. You can securely assemble the hot water supply port adapter with.

According to the method of attaching the hot water supply port adapter of the present invention [8], since the hot water supply port adapter of the above invention is used, even if the space on the back side of the bathtub is small, the hot water supply port adapter can be reliably secured by working in one direction from the inside of the bathtub. Can be assembled to.

FIG. 1 is an exploded perspective view showing a mounting structure of a hot water supply port adapter according to an embodiment of the present invention. FIG. 2 is a side view showing the mounting structure of the hot water supply port adapter of the embodiment by cutting out a part thereof. FIG. 3 is a front view showing a mounting structure of the hot water supply port adapter of the embodiment. FIG. 4 is a plan view showing a mounting structure of the hot water supply port adapter of the embodiment. FIG. 5 is a side view showing a body applied to the hot water supply port adapter of the embodiment. FIG. 6 is a side view showing the body of the present embodiment in an exploded manner. 7A and 7B are views showing a substrate portion of the body of the present embodiment in a claw-closed state, where FIG. 7A is a front view and FIG. 7B is a side view. 8A and 8B are views showing a substrate portion of the body of the present embodiment in a claw-opened state, where FIG. 8A is a front view and FIG. 8B is a side view. 9A and 9B are views showing a flange member applied to the hot water supply port adapter of the present embodiment, where FIG. 9A is a front view and FIG. 9B is an exploded side view. FIG. 10 is a diagram for explaining a procedure for inserting a body with an outer pipe into a mounting hole in the hot water supply port adapter of the present embodiment, and FIG. 10A is a diagram for inserting an outer pipe connecting portion of the body. Side sectional view showing the state of being inserted, FIG. (B) is a side sectional view showing a state in which the joint receiving portion of the body is inserted, and FIG. (C) is a side sectional view showing a state of inserting the pipe portion of the body. FIG. (D) is a side sectional view showing a state immediately after the body is inserted. FIG. 11 is a side view showing the hot water supply port adapter of the embodiment in the form of the S type specification. 12A and 12B are views showing a body with an outer pipe in a hot water supply port adapter of a reference example, FIG. 12A is a side sectional view, and FIG. 12B is a state in which a joint receiving portion of the body is inserted into a mounting hole. It is a side sectional view which shows.

FIG. 1 is a perspective view showing an exploded view of the mounting structure of a hot water supply port adapter according to an embodiment of the present invention, FIG. 2 is a side sectional view, FIG. 3 is a front view, and FIG. 4 is a plan view.

As shown in these figures, the hot water supply port adapter A adopted in the present embodiment is assembled to the mounting hole H provided in the bathtub wall W. In addition to the hot water beam treatment that supplies the hot water supplied from the outdoor water heater into the bathtub, this hot water supply port adapter A sucks the hot water in the bathtub and sends it to the outdoor water heater, where it is reheated to a high temperature. It is possible to perform a reheating process in which the hot water is returned to the bathtub.

The hot water supply port adapter A of the present embodiment is basically composed of a body B constituting an outer tank mounting member, a flange member 3, a long screw 4, and an adapter main body 5 called a flow path partition member or the like. Prepared as. In the following description, in order to facilitate the understanding of the invention, the inside (left side in FIG. 2) with respect to the bathtub along the axial direction of the hot water supply port adapter A is the "front side", "front side", and "front side (front side). The outside (right side in FIG. 2) with respect to the bathtub will be described as "rear side", "back side (back side)", or "back side".

5 and 6 are views showing the body B adopted in the hot water supply port adapter A of the embodiment. As shown in FIGS. 2 to 6, the body B includes a body body 1 and two pipe joints 2 and 2. The body body 1 is provided for a circular flange-shaped substrate 11, two pipe portions 12 and 12 provided on the back surface side of the substrate 11, and rear ends of the pipe portions 12 and 12, and for the above two pipes. It is provided with two joint receiving portions 13 and 13 provided corresponding to the joints 2 and 2. In the body body 1, the two pipe portions 12 and 12 are arranged so as to extend rearward in parallel with the axis X1 of the body body 1, and the joint receiving portions 13 and 13 are bent downward so that the shaft of the body body 10 It is arranged so as to extend diagonally downward with respect to the center X1. In the present embodiment, the axial center X1 of the body body 1 coincides with the axial center of the pipe portion 12. Further, in the present embodiment, the axes of the hot water supply port adapter A and the axes of the body B are used with substantially the same meaning as the axes X1 of the body body 1, and coincide with the axes X1 of the body body 1. To do.

The pipe portion 12 and the joint receiving portion 13 are formed in a hollow tubular shape having a vertically elongated elliptical cross section and are communicated with each other, and the front end of the pipe portion 12 is opened in the front surface of the substrate 11. Further, an inclined joint surface 14 is provided at the rear end of the joint receiving portion 13, and the rear end of the joint receiving portion 13 is opened at the inclined joint surface 14. The inclined joint surface 14 is arranged on a plane orthogonal to the axis X13 of the joint receiving portion 13, in other words, is arranged on a plane inclined with respect to the axis X1 of the body 1. In the present embodiment, the angle (bending angle) θ1 of the axis X13 of the joint receiving portion 13 with respect to the axis X1 of the body 1 is set to 50 ° (see FIG. 6). In the present embodiment, the axial center X13 of the joint receiving portion 13 corresponds to the orthogonal axis of the inclined joint surface 14.

The pipe joint 2 is provided at the base end of the outer pipe connecting portion 21 for connecting the outer pipe 9 (see FIG. 2) such as the forward pipe and the return pipe, and the outer pipe connecting portion 21 so as to project substantially forward. It is provided with a plug-in connecting portion 25 and an outward flange 23 provided on the outer periphery of the end portion of the plug-in connecting portion 25 on the outer pipe connecting portion 21 side.

In the pipe joint 2, the axial center X21 of the outer pipe connecting portion 21 is arranged so as to bend with respect to the axial center X25 of the insertion connecting portion 25, and the outer pipe connecting to the axial center X25 of the insertion connecting portion 25. The angle (bending angle) θ2 of the axis X21 of the portion 21 is set to 50 ° (see FIG. 6). The bending angle θ2 is set to the same angle as the bending angle θ1.

The front surface of the flange 23 is configured as an inclined joint surface 24, and the inclined joint surface 24 is arranged on a plane orthogonal to the axial center X25 of the insertion connecting portion 25. In other words, the inclined joint surface 24 is arranged on a plane that is inclined with respect to the axial center X21 of the outer pipe connecting portion 21. In the present embodiment, the axial center X25 of the insertion connecting portion 25 corresponds to the orthogonal axis of the inclined joint surface 24.

The outer pipe connecting portion 21 and the insertion connecting portion 25 in the pipe joint 2 are formed in a hollow tubular shape and communicate with each other, and the rear end opening of the outer pipe connecting portion 21 communicates with the front end opening of the insertion connecting portion 25. ing.

The cross-sectional shape of the insertion connecting portion 25 is formed into a vertically long elliptical shape corresponding to the shape of the opening of the joint receiving portion 13, and the cross-sectional shape of the outer pipe connecting portion 21 is formed in a circular shape. , The outer pipe 9 such as the forward pipe and the return pipe can be fitted and fixed.

The body B is assembled by inserting and connecting the insertion connecting portion 25 of the pipe joint 2 into the opening of the joint receiving portion 13 in the body body 1. In this assembled state, the inclined joint surface 14 of the joint receiving portion 13 and the inclined joint surface 24 of the pipe joint 2 come into surface contact with each other, so that the axial center X13 of the joint receiving portion 13 and the outer pipe connecting portion 21 of the pipe joint 2 come into surface contact with each other. It is designed to coincide with the axis X21 of. Therefore, the angle (bending angle) θ of the axis X21 of the outer pipe connecting portion 21 with respect to the axis X1 of the body B (body body 1) is between the axis X1 of the body body 1 and the axis X13 of the joint receiving portion 13. It is set to 100 °, which is the sum of the bending angle θ1 and the bending angle θ2 between the axis X21 of the outer pipe connecting portion 21 and the axis X25 of the insertion connecting portion 25 (see FIG. 5). Since the bending angle θ of the axial center X21 of the outer tube connecting portion 21 with respect to the axial center X1 of the body body 1 is set to an angle exceeding 90 °, the outer tube connecting portion 21 is on the base end side (upper end side) thereof. ) Is gradually arranged forward toward the tip side (lower end side).

Further, in the present embodiment, the hollow tubular portion inside the pipe joint 2 and the hollow tubular portion inside the pipe portion 12 of the body body 1 from the tip (lower end) of the outer pipe connecting portion 21 to the front end of the body body 1. Two independent pipelines are provided in parallel, and each pipeline is configured to allow hot water to flow.

Here, in the present embodiment, the bending angle θ needs to be set to an angle exceeding 90 ° not including the right angle “90 °”, and more preferably set to 95 ° to 110 °. That is, if the bending angle θ is 90 ° or less, which is too narrow, the body B cannot be pushed to a predetermined position when assembling the hot water supply port adapter A to the bathtub wall W as described in detail later, and the hot water supply port It is not preferable because it may be difficult to assemble the adapter A.

7 and 8 are views showing a substrate portion of the body B. As shown in both figures, thread cutting holes 16 and 16 are formed at upper and lower positions on the front surface side of the substrate 11 in the body B so that the long screws 4 and 4 can be screwed and fixed.

Further, locking claws 17 are provided at four locations on the outer peripheral portion of the substrate 11 of the body B so as to form a part of the outer peripheral portion. One end side of each locking claw 17 in the circumferential direction is rotatably attached, and the other end side is not fixed and is a free end. As a result, each locking claw 17 is configured to be openable and closable between the closed state shown in FIG. 7 and the open state shown in FIG. Then, as shown in FIG. 7, when each locking claw 17 is closed, each locking claw 17 is arranged along the outer circumference of the substrate 11, and the substrate 11 is formed in a circular shape in a front view (front view). The outer diameter dimension is configured to be smaller than the inner diameter dimension of the mounting hole H in the bathtub wall W. Therefore, when the locking claw 17 is closed, the substrate 11 can be inserted into the mounting hole H. Further, as shown in FIG. 8, when each locking claw 17 is opened, each locking claw 17 is arranged so as to project in the outer diameter direction. In this open state, the disk 11 is configured so as not to be inserted into the mounting hole H, and the tip of each locking claw 17 is configured to be locked to the peripheral edge of the mounting hole H in the bathtub wall W. ..

The portion of the body B behind the substrate 11, that is, the pipe portion 12, the joint receiving portion 13, and the pipe joint 2 is configured so that the cross-sectional shape orthogonal to the axial direction fits within the cross-sectional shape of the mounting hole H. In the state where the locking claw 17 is closed, the entire body B is basically configured to be inserted into the mounting hole H.

As shown in FIGS. 1 to 4, the adapter main body 5 includes a disk-shaped in-tank protrusion 51 having a hollow structure. The outer diameter of the protrusion 51 in the tank is formed to be larger than the inner diameter of the mounting hole H in the bathtub wall W so that the protrusion 51 cannot be inserted into the mounting hole H.
Further, on the front wall of the protrusion 51 in the tank, discharge ports 52 and 52 composed of a large number of small holes are formed side by side.

On the back surface side of the protrusion 51 in the tank, two pipe portions 55, 55 are formed so as to extend rearward corresponding to the discharge ports 52, 52. The discharge ports 52, 52 and the corresponding pipe portions 55, 55 are communicated with each other, and the hot water introduced into the pipe portions 55, 55 from the rear end opening corresponds to the pipe portions 55, 55, respectively. It is configured to be discharged from the discharge ports 52 and 52, and the hot water sucked from the discharge ports 52 and 52 flows out from the rear end openings of the corresponding pipe portions 55 and 55, respectively.

Further, each of the pipe portions 55, 55 is formed in a vertically long elliptical shape corresponding to the shape of the front opening of the pipe portions 12, 12 of the body B.

In the present embodiment, the in-tank protrusion 51 of the adapter body 5 is configured as the front portion, and the pipe portions 55 and 55 are configured as the rear portion.

As shown in FIGS. 1 to 3 and 9, the flange member 3 is formed in a circular or annular shape when viewed from the front, and the outer diameter dimension is formed to be larger than the inner diameter dimension of the mounting hole H, so that the mounting hole H cannot be inserted. It is configured as follows.

The flange member 3 is formed with pipe portion insertion holes 31 and 31 corresponding to the pipe portions 55 and 55 of the adapter main body 5, and both pipe portion insertion holes 31 and 31 are communicated and connected at the intermediate portion 32 thereof. ing. Further, the flange member 3 is formed with screw holes 35, 35 at two positions above and below the flange member 3, and large-diameter screw head insertion holes 36, 36 that are adjacent to and connected to the screw holes 35, 35, respectively. Is formed. The screw head insertion hole 36 has an inner diameter that is larger than the outer diameter of the head of the long screw 4, and is configured to allow the head of the long screw 4 to be inserted. The inner diameter of the screw hole 35 is smaller than the outer diameter of the head of the long screw 4 and larger than the outer diameter of the shaft of the long screw 4, and the head of the long screw 4 is inserted. Although it cannot be done, the shaft portion of the long screw 4 is configured so that it can be inserted and arranged.

In addition, annular packings 38 and 38 are detachably attached to both front and rear sides of the flange member 3.

The flange member 3 and the body B are fixed to the bathtub wall W by sandwiching the peripheral portion of the mounting hole of the bathtub wall W. That is, as shown in FIGS. 1, 2 and 10 (d), each locking claw 17 has a mounting hole H on the back surface side (outside of the bathtub) of the bathtub wall W with the locking claws 17 opened. It is arranged so as to be locked to the peripheral edge portion, and the outer peripheral edge portion of the flange member 3 is arranged so as to be locked to the peripheral edge portion of the mounting hole H on the surface side (inside the bathtub) of the bathtub wall W. Further, two long screws 4 and 4 are inserted into the screw fixing holes 35 and 35 of the flange member 3 and screwed into the thread cutting holes 16 and 16 of the body B. In this way, the flange member 3 and the body B are fixed to the bathtub wall W so as to sandwich the peripheral portion of the mounting hole of the bathtub wall W.

Further, the adapter body 5 has its pipe portions 55 and 55 inserted into the pipe portion insertion holes 31 and 31 of the flange member 3, and the rear end opening of the pipe portions 55 and 55 is the front end of the pipe portions 12 and 12 in the substrate 11 of the body B. As shown in FIG. 3, four screws 41 are inserted into the in-tank protruding portion 51 from the front side of the adapter body 5 and fixed to the flange member 3 by screwing in a state of being arranged corresponding to the opening. In this way, the adapter body 5 is fixed to the body B via the flange member 3, and the hot water supply port adapter A is assembled to the bathtub wall W. A filter member is attached to the protrusion 51 in the tank of the adapter body 5 as needed.

In the mounting structure of the hot water supply port adapter having this configuration, as shown in the imaginary line in FIG. 2, the two outer pipe connecting portions 21 and 21 are connected to the outgoing pipe and the return pipe made of a flexible flexible pipe or the like. One ends of the two outer pipes 9 and 9 are connected to each other, and the other ends of the two outer pipes 9 and 9 are connected to the outdoor water heater. When the hot water beam is double-conveyed, hot water is supplied from the outdoor water heater to the two outer pipes 9 and 9, respectively, and the body is supplied from both outer pipes 9 and 9 via the outer pipe connecting portions 21 and 21. It is introduced into the two pipelines of B. The hot water introduced into each pipeline is introduced into the two pipe portions 55 and 55 of the adapter main body 5 through each pipeline so as to be discharged into the bathtub from the two discharge ports 52 and 52. It has become.

Further, when reheating is performed, hot water in the bathtub is sucked from one discharge port 52 in the adapter body 5, passes through one pipe 55 of the adapter body 5, and enters one pipe of the body B. be introduced. The hot water introduced into one pipeline is supplied from one outer pipe connecting portion 21 to one outer pipe 9 through the pipeline, and is returned to the outdoor water heater through the outer pipe 9. The hot water returned to the water heater is heated, and the hot water is supplied to the other outer pipe, passes through the other pipe of the body B and the other pipe 55 of the adapter body 5, and is sent from the other discharge port 52. It is designed to be discharged into the bathtub. In this way, hot water is circulated between the inside of the bathtub and the outdoor water heater, and reheating is performed.

In the hot water supply port adapter A having the above configuration, when replacing the existing hot water supply port adapter assembled to the bathtub wall W, as described below, work is not performed around the mounting holes on the back side of the bathtub, that is, By working from the inside of the bathtub, the existing hot water supply port adapter can be removed and a new hot water supply port adapter A can be installed.

First, the member corresponding to the adapter body 5 in the existing hot water supply port adapter (old adapter) is removed. Subsequently, the member corresponding to the flange member 3 (old male screw member) in the old adapter is removed, but before that, the member corresponding to the body B in the old adapter (old body) is guided by a wire or the like from the inside of the bathtub through a mounting hole. The end of the member is fixed. In that state, remove the old male screw member and remove the old body on the outside of the bathtub. After that, pull the two outer pipes (old outer pipes) connected to the old body from the outdoor water heater side, pull out the old body and the guide member to a large workable space, and remove the old body from the guide member. , Discard the old body and old outer pipe.

After that, two new outer pipes 9 connected to the outdoor water heater are fixed to the end of the guide member. In the case where only the hot water supply port adapter is replaced without replacing the old outer pipe, the old outer pipe is fixed to the guide member without discarding the old outer pipe.

Next, the guide member is pulled from the inside of the bathtub, and the end portion of the outer pipe 9 is pulled into the inside of the bathtub through the mounting hole H. Subsequently, as shown in FIG. 10A, the guide member is removed from the outer pipe 9, and then the body B in the hot water supply port adapter A of the present embodiment is attached to the end of the outer pipe 9. That is, the end portion of the outer pipe 9 is fitted into the outer pipe connecting portion 21 of the body B, and the pipe band 91 is wound around the outer periphery of the connecting end portion of the outer pipe 9 to fix it. At this time, the clasp portion 92 of the pipe band 91 is arranged on the rear side (the back side of the outer pipe connecting portion 21). The reason for arranging the clasp portion 92 on the rear side will be described later.

When connecting the outer pipe 9 to the body B, a short auxiliary outer pipe is previously fixed to the outer pipe connecting portion 21 of the body B via a pipe band 91, and a pipe joint is attached to the auxiliary outer pipe. The outer pipe 9 drawn into the bathtub may be connected via the above.

After connecting the outer pipe 9 to the body B in this way, the body B is arranged together with the outer pipe 9 outside the bathtub through the mounting hole H. At this time, the tip of the long screw 4 is screwed into the threaded hole 16 of the body B in advance, and the head of the long screw 4 is locked to the peripheral edge of the mounting hole H inside the bathtub to lock the body B into the long screw 4. Temporarily hold the bathtub in the vicinity of the mounting hole H on the outside of the bathtub.

Next, using a screwdriver or the like, the locking claw 17 of the body B is opened from the inside of the bathtub through the mounting hole H. Subsequently, after inserting the head of the long screw 4 into the screw head insertion hole 36 of the flange member 3 from the inside of the bathtub, the flange member 3 is rotated in a small amount in the circumferential direction, and the shaft portion of the long screw 4 is screwed to the screw head. It is introduced from the insertion hole 36 into the screwing hole 35. After that, by screwing the long screw 4, the body B is pulled to the front side (outer surface of the bathtub wall), the locking claw 17 of the body B is pressed against the peripheral portion of the mounting hole on the outer surface of the bathtub wall, and the flange member 3 The outer peripheral edge of the bathtub is pressed against the peripheral edge of the mounting hole on the inner surface of the bathtub wall. In this way, the body B and the flange member 3 are fixed to the bathtub wall W by sandwiching the peripheral portion of the mounting hole of the bathtub wall W from inside and outside.

Next, the adapter body 5 is arranged with the pipe portion 55 thereof through the pipe portion insertion hole 31 and the mounting hole H of the flange member 3 corresponding to the front end opening of the pipe portion 12 on the front surface side of the substrate of the body B, and the adapter is in that state. The adapter main body 5 is fixed to the flange member 3 by penetrating the screw 41 from the front surface side of the main body 5 and screwing it into the flange member 3. As a result, the hot water supply port adapter A of the present embodiment is assembled to the bathtub wall W, and the replacement work of the hot water supply port adapter is completed.

Even when it is not possible to work around the mounting hole on the outside (back side) of the bathtub in this way, the old adapter can be removed and the new hot water supply port adapter A can be securely assembled.

On the other hand, in the hot water supply port adapter A of the present embodiment, since the bending angle θ of the axial center X21 of the outer pipe connecting portion 21 with respect to the axial center 1 of the body body 1 is as large as 100 °, the mounting hole in the bathtub wall W When there is not enough space on the back surface side of H For example, even when the outer wall W1 is arranged near the back surface side of the mounting hole H as shown in FIG. 10A, the work from the inside of the bathtub Can be assembled securely with. That is, when the outer pipe 9 is connected to the body B inside the bathtub and then the body B is inserted into the mounting hole H from the inside of the bathtub together with the outer pipe 9, the body is shown in FIGS. 10 (a) to 10 (c). While rotating B, the pipe joint 2, the joint receiving portion 13, the pipe portion 12, and the substrate 11 of the body B are sequentially inserted into the mounting holes H, and finally, as shown in FIG. The whole is pushed toward the back surface side of the bathtub, and the axis X1 of the body B is arranged so as to coincide with the axis of the mounting hole H. At this time, if the bending angle θ (see FIG. 5) of the axial center X21 of the outer pipe connecting portion 21 with respect to the axial center 1 of the body B is set to 90 ° or less, the outer pipe 9 is attached to the outer pipe connecting portion 21. Since the clasp portion 92 of the pipe band 91 for fixing is arranged so as to project rearward from the rear end of the body B, the clasp portion 92 interferes with the outer wall W1 and determines the body B. It cannot be pushed to the position, and it becomes difficult to assemble the hot water supply port adapter A.

Therefore, in the present embodiment, the bending angle θ of the axial center X21 of the outer pipe connecting portion 21 with respect to the axial center 1 of the body B is as large as 100 °, so that the entire body B is as shown in FIG. 10 (d). The outer pipe connecting portion 21 is arranged so that its tip end side (lower end side) is located forward of its base end side (upper end side) when the bathtub is pushed toward the back surface side. Therefore, the clasp portion 92 of the pipe band 91 is also arranged in the front, the clasp portion 92 can be prevented from interfering with the outer wall W1, the body B can be surely pushed into the predetermined position, and the hot water supply port adapter A can be pushed. Can be securely assembled. In other words, the hot water supply port adapter A can be securely attached to the bathtub wall W as long as there is a space on the back surface side of the bathtub for storing the body B.

By the way, as shown in FIG. 12A, if the clasp portion 92 of the pipe band 91 is arranged on the front side (left side in the same figure) of the outer pipe connecting portion 21, interference with the outer wall W1 of the clasp portion 92 is prevented. It is thought that it can be done. However, in that case, the body B cannot be inserted into the mounting hole H. That is, when the body B arranged on the front side (inside) of the clasp portion 92 is inserted into the mounting hole H and is to be rotated downward, as shown in FIG. 12 (b), the back side of the body body 1 and the clasp The portion 92 and the portion 92 are caught in the inner peripheral edge portion of the mounting hole H, the body B cannot be inserted through the mounting hole H, and the hot water supply port adapter A cannot be mounted. Therefore, as described above, in the hot water supply port adapter A configured to be assembled by working from the inside of the bathtub as in the present embodiment, the clasp portion 92 of the pipe band 91 in the body B is on the rear side of the outer pipe connecting portion 21. It is necessary to place it on the (back side).

As described above, according to the hot water supply port adapter A of the present embodiment, since the bending angle θ of the outer pipe connecting portion 21 in the body B is set to 100 °, the tip side of the outer pipe connecting portion 21 is arranged forward. This makes it possible to reduce the amount of rearward protrusion of the clasp 92 of the pipe band 91 located on the back side of the outer pipe connecting portion 21. Therefore, even when the space on the back side of the bathtub is narrow, it is possible to prevent the clasp portion 92 from interfering with peripheral members such as the outer wall W1, and the body B can be reliably arranged on the back side of the bathtub. Therefore, even if the space behind the bathtub is small, the body B, and by extension, the flange member 3 and the adapter body 5 can be securely assembled.

Further, in the present embodiment, the clasp portion 92 of the pipe band 91 for fixing the outer pipe 9 to the outer pipe connecting portion 21 of the body B is arranged on the outside (rear side) of the outer pipe connecting portion 21. , The body B can be reliably inserted into the mounting hole H, and the hot water supply port adapter A can be reliably assembled to the bathtub wall W by working from the inside of the bathtub.

Further, in the present embodiment, the pipeline provided in the body B is bent at two positions, a position between the pipe portion 12 and the joint receiving portion 13 and a position between the insertion connecting portion 25 and the outer pipe connecting portion 21. Since the bending angle θ as a whole is set to 100 °, there is no sharp bend in the pipeline as compared with the case where it is formed so that it is bent greatly at one place, and hot water is formed. Distribution can be performed efficiently and smoothly. In the present invention, the pipeline may be formed so as to be bent at one or three or more positions, or may be formed in an arc shape. When the pipeline is formed so as to be bent at three or more positions, or when it is formed in an arc shape, the flow of hot water can be performed more efficiently and smoothly.

Further, in the hot water supply port adapter A of the present embodiment, the outer pipe 9 is used in an L-shaped specification in which the outer pipe 9 is arranged in a direction substantially orthogonal to the axis X1 of the body B. Can be used not only in the L-shaped specification but also in the S-shaped specification in which the outer tube 9 is arranged parallel to the axis X1 of the body B. That is, as shown in FIGS. 5 and 6, in the hot water supply port adapter A of the present embodiment, the inclined joint surface 14 provided in the joint receiving portion 13 of the body body 1 is replaced with the inclined joint surface 24 provided in the pipe joint 2. The bending angle θ of the outer pipe connecting portion 21 of the pipe joint 2 is set to 100 °, and the bending angle θ1 of the orthogonal axis X13 of the inclined joint surface 14 with respect to the axial center X1 of the body body 1 and the inclined joint. The bending angle θ2 of the axis X21 of the outer pipe connecting portion 21 with respect to the orthogonal axis X25 of the surface 24 is set to 50 °. Therefore, when connecting the pipe joint 2 to the joint receiving portion 13 of the body body 1, when the pipe joint 2 is rotated 180 ° around the axis from the state shown in FIG. 5 and connected, the body body is connected as shown in FIG. The axis X1 of 1 and the axis X21 of the outer pipe connecting portion 21 are parallel to each other, and the outer pipe 9 connected to the outer pipe connecting portion 21 can be pulled out in a straight line rearward from the body B. Therefore, when there is no obstacle on the back side of the mounting hole H in the bathtub wall W, the S-shaped specification form shown in FIG. 11 is adopted, and the adapter A is adopted from the back side of the hot water supply port adapter A assembled to the bathtub wall W. The outer tube 9 can be pulled out along a straight line parallel to the axis X1 of. In this way, depending on the situation at the construction site, the outer pipe 9 may be pulled out in a direction substantially orthogonal to the axis X1 of the hot water supply port adapter A as shown in FIG. 5, or with respect to the axis X1 as shown in FIG. It can be pulled out in parallel directions, and versatility can be improved.

In the present invention, the bending angle θ1 of the orthogonal axis X13 of the inclined joint surface 14 with respect to the axial center X1 of the body body 1 and the bending angle θ2 of the axial center X21 of the outer pipe connecting portion 21 with respect to the orthogonal axis X25 of the inclined joint surface 24 It is not always necessary to match with, and both bending angles θ1 and θ2 may be set to be slightly different.

Further, in the above embodiment, the body main body 1 and the pipe joint 2 are formed separately, but the present invention is not limited to this, and in the present invention, the pipe joint 2 (outer pipe connection portion) is provided in the body main body 1. It may be formed integrally.

Further, in the above embodiment, the case where the outer tube 9 is pulled out downward from the body B has been described as an example, but the present invention is not limited to this, and in the present invention, the outer tube 9 is pulled out sideways or upward from the body B. You can do it. In short, the outer tube 9 may be pulled out in a direction substantially orthogonal to the axis X1 of the body B.

Further, in the above embodiment, the case where the hot water supply port adapter A of the present invention is used when replacing the hot water supply port adapter has been described as an example, but the present invention is not limited to this, and the hot water supply port adapter of the present invention may be used at the time of new construction or It can also be applied when a hot water supply port adapter is newly attached to the bathtub wall where the adapter is not attached, such as when remodeling the entire bathtub.

Further, in the above embodiment, the body B is fixed to the bathtub wall W by the flange member 3 and the long screw 4, but in the present invention, the method of fixing the body B to the bathtub wall W is particularly limited. Any fixing means may be used instead of the one.

Further, in the above embodiment, the adapter body 5 is connected and fixed to the body B via the flange member 3 and the long screw 4, but in the present invention, the method of connecting the adapter body 5 to the body B is particularly suitable. Any connecting means may be used without limitation.

Further, in the present invention, the materials of the tube band 91 and the clasp portion 92 are not particularly limited, and may be made of cloth, for example, whether it is made of metal, synthetic resin, or synthetic rubber. Any material may be used. Further, the material of the tube band 91 and the material of the clasp portion 92 may be formed of the same material, or may be formed of different materials.

The hot water supply port adapter of the present invention can be used as a circulation metal fitting or the like that is assembled to the bathtub wall in a penetrating state.

1: Body body 13: Joint receiving part 14: Inclined joint surface 2: Pipe joint 21: Outer pipe connection part 24: Inclined joint surface 5: Adapter body 9: Outer pipe 91: Pipe band 92: Clasp part A: Hot water supply port Adapter B: Body H: Mounting hole W: Bath wall X1: Axial center of body 1 X13: Axial center of joint receiving part (orthogonal axis of inclined joint surface)
X21: Axial center of outer pipe connection part X25: Axial center of insertion connection part (orthogonal axis of inclined joint surface)
θ, θ1, θ2: Bending angle

Claims (8)

A body that is arranged outside the bathtub and can be inserted into the mounting hole in the mounting hole of the bathtub wall, and a rear part that is inserted into the mounting hole from the inside of the bathtub with the front part arranged inside the bathtub and connected to the body. The body includes an adapter body, and the body includes a body body and an outer tube connecting portion for connecting an outer tube provided in a protruding shape on the body body, and is supplied from the outer tube connecting portion into the body body. A hot water supply port adapter in which hot water is discharged from the front of the adapter body.
The axis of the outer pipe connecting portion is arranged so as to bend with respect to the axis of the body body, and
The bending angle of the axis of the outer tube connection portion with respect to the direction directly behind the axis of the body body is set to an angle exceeding 90 °, and the tip end side of the outer tube connection portion is arranged in front of the body body side. A hot water supply port adapter that is characterized by being The hot water supply port adapter according to claim 1, wherein a hot water distribution pipeline provided from the tip of the outer pipe connecting portion to the front end of the body body is formed so as to bend at two or more positions. The hot water supply port adapter according to claim 1 or 2, wherein the pipe band is wound around the outer circumference of the outer pipe fitted in the outer pipe connecting portion, and the clasp portion of the pipe band is arranged on the rear side. The hot water supply port adapter according to any one of claims 1 to 3, wherein the bending angle of the axis of the outer pipe connection portion with respect to the axis of the body body is set to 95 ° to 110 °. With tubular joint receiving portion is provided in the main body, inclined joint surface is provided which is inclined relative to the axis of the main body to the joint receiving part,
Together with the outer pipe connecting portion is provided on pipe fittings attached to the coupling receiving portion, the pipe joint, the inclined joint surface is provided which is inclined relative to the axis of the outer pipe connecting portion,
Claim 1 in which the axial center of the outer pipe connecting portion is arranged so as to be bent with respect to the axial center of the body body by joining the inclined joint surface of the pipe joint to the inclined joint surface of the joint receiving portion. The hot water supply port adapter according to any one of 1 to 4. The bending angle of the orthogonal axis of the inclined joint surface of the joint receiving portion with respect to the axial center of the body body is the same as the bending angle of the axial center of the outer pipe connecting portion with respect to the orthogonal axis of the inclined joint surface of the pipe joint. The hot water supply port adapter according to claim 5, which is set to an angle. A body that is arranged outside the bathtub and can be inserted into the mounting hole in the mounting hole of the bathtub wall, and a rear part that is inserted into the mounting hole from the inside of the bathtub with the front part arranged inside the bathtub and connected to the body. The body includes an adapter body, and the body includes a body body and an outer pipe connecting portion that is provided in a protruding shape on the body body and to which an outer pipe is connected, and the outer pipe connecting portion is provided via the outer pipe. It is a mounting structure of a hot water supply port adapter so that hot water supplied into the body body is discharged from the front part of the adapter body.
The axis of the outer pipe connecting portion is arranged so as to bend with respect to the axis of the body body, and
The bending angle of the outer pipe connecting portion with respect to the axial center of the body body with respect to the direction directly behind the axial center is set to an angle exceeding 90 °, and the tip end side of the outer pipe connecting portion is arranged in front of the body main body side. The mounting structure of the hot water supply port adapter is characterized by being A method of attaching a hot water supply port adapter in which the hot water supply port adapter according to any one of claims 1 to 6 is attached to a mounting hole of a bathtub wall.
The process of connecting the lead-in end of the outer pipe drawn from the outside of the bathtub to the inside of the bathtub through the mounting hole to the outer pipe connection portion of the body,
The process of passing the body to which the outer pipe is connected through the mounting hole and arranging it on the outside of the bathtub,
A method for mounting a hot water supply port adapter, which comprises a step of inserting the rear portion of the adapter body into a mounting hole to connect to the outside tank mounting member and arranging the front portion of the adapter body inside the bathtub.

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