JP3057239U - Bathtub hot water circulation fitting - Google Patents

Abstract

(57) [Summary] [Problem] To provide a bathtub hot water circulation fitting for connection between a fitting main body and a boiler, which can reduce labor and material costs. SOLUTION: A pair of perforated projections 110, 120 communicating with a hot water passage and a hot water suction passage, respectively, are provided integrally with a metal fitting body 10, and the perforated projections 110, 120 are turned by a cutting tool. The bamboo rods 111 and 121 are formed so as to protrude, and are formed in the hot water supply connection hole 11 and the return water connection hole 12 of the metal fitting body 10, respectively. Tube 1
A flexible synthetic resin hose containing a wire is externally fitted to 11, 121 so that it can be tightened with a screw tightenable elastic metal band.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 TECHNICAL FIELD The present invention relates to a bathtub hot water circulation fitting attached to a bathtub wall.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 5, the metal fitting body of this type of bathtub hot water circulation fitting is formed by drilling a hot water supply connection hole 2 and a return hot water pipe connection hole 3 in a metal fitting body 1 and fitting a copper pipe 4 into the hole. The other end of the copper pipe was inserted into the male screw pipe 5 and brazed, and the pipe was connected to a boiler (not shown) by a pipe with a rotating nut. Between the connection hole 2 and the return pipe connection hole 3 and the boiler, a pair of copper pipes, a pair of male threaded pipes and a pair of pipes with nuts are required as members, and a pair of copper pipes is required. Required four places of brazing, so there was a drawback that a great deal of labor was added.

[0003]

[Problems to be solved by the invention]

 SUMMARY OF THE INVENTION The present invention provides a bathtub hot water circulation fitting for connecting between a fitting body and a boiler while reducing labor and material costs.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the bathtub hot water circulation fitting of the present invention has a pair of perforated projections 110 and 120 communicating with the hot water discharge passage and the hot water suction passage, respectively, as shown in FIG. And the perforated projections 110 and 120 are formed so that they can be protruded as bamboo child tubes 111 and 121 by turning and cutting the tool, respectively, so that the hot water supply connection hole 11 and the return hot water connection hole of the metal fitting body 10 are formed. In addition, a flexible synthetic resin hose 20 containing a wire is externally fitted into each of the bamboo tube-like tubes 111 and 121 of the hot water supply connection hole 11 and the return hot water connection hole 12, and can be tightened with the screw-tightening and retractable metal band 30. It was made. In the present invention, in order to integrally form the perforated projections on the metal fitting body, it is preferable to cast the entire metal fitting body provided with the perforated projections. A flexible synthetic resin hose with a wire must be able to be cut relatively easily according to the distance from the boiler. The screw-tightening and retractable metal band is such that the metal band can be expanded and contracted by screwing and the hose can be tightened freely.

[0005]

First Embodiment of the Invention A first embodiment of the present invention is shown in FIGS. 1, 2 and 3. FIG. The bathtub hot water circulation mouth fitting of this embodiment is screwed to the metal fitting body 10 via a bathtub wall 40, and provided with a hot water discharge passage (not shown) and a return hot water passage (not shown) in the bathtub. And a wire mesh strainer 101 that is externally fitted to the case 100. The metal fitting body 10 is integrally provided with a pair of perforated projections 110 and 120 communicating with the hot water passage and the hot water passage, respectively. They are formed so as to project as bamboo tube-like tubes 111 and 121, respectively, and are formed in the hot water supply connection hole 11 and the return water connection hole 12 of the metal fitting body 10. The hot water supply connection hole 11 and the return hot water connection hole 12 are formed in the four-stage bamboo tube-like tubes 111 and 121 so that the flexible synthetic resin hose 20 can be externally fitted thereto. The elastic metal band 30 can be tightened. The flexible synthetic resin hose 20 is formed by spirally winding a wire 22 around a synthetic resin inner tube 21 and fixing an outer tube 23 made of synthetic resin. It is designed to maintain the pressure resistance and to cut the required length relatively easily. The screw-tightening and retractable metal band 30 has a thread 331 rotatably fitted to a cover 32 having one end of a metal band 31 provided with a number of long holes 311 at regular intervals and having the other end freely insertable. The screw 331 is engaged with the elongated hole 331 of the metal band 31 so that the metal band 31 can be expanded and contracted by the rotation of the screw 331. Therefore, when attaching the present invention bathtub hot water circulation fitting to the bathtub wall 40, the main body fitting 10 is inserted into the bathtub hole 41, the case 100 is screwed, and the wire mesh strainer is externally fitted to the case 100. Between each of the bamboo child tubes 111 and 121 of the hot water supply connection hole 11 and the return water connection hole 12 of the main body fitting 10 and the hot water supply pipe connection tube (not shown) and the return water tube connection tube (not shown) of the boiler. If the ends of the flexible synthetic resin hose 20 cut to the required length are externally fitted to each other and tightened with a screw-fastening elastic metal band 30, the connection between the bathtub hot water circulation fitting and the boiler can be performed. It will be completed in a very short time.

[0006]

Second Embodiment of the Invention FIG. 4 shows a second embodiment of the present invention. The bathtub hot water circulation mouth fitting of the present invention embodiment is the first embodiment of the present invention except that the hot water supply connection hole 11B and the return hot water connection hole 12B of the bamboo child tubes 111B and 121B project from the metal fitting body 10B to the side. Therefore, detailed description is omitted. In addition, 110B and 120B are perforated projections, 100B is a case part, 101B is a wire mesh strainer part.

[0007]

[Effect of the invention]

 According to the present invention, the connection work between the bathtub hot water circulation fitting and the boiler can be completed in an extremely short time, and the members required for the connection need only be a synthetic resin hose and a tightening metal band that can be easily cut. Labor and material costs required for conventional connection work can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an embodiment of a bathtub hot water circulation fitting of the present invention.

FIG. 2 is an explanatory view of a flexible synthetic resin hose used in the bathtub hot water circulation fitting of the present invention.

FIG. 3 is an explanatory view of a screw-fastened telescopic metal band used in the bathtub hot-water circulation fitting of the present invention.

FIG. 4 is an explanatory view showing another embodiment of the bathtub hot water circulation fitting of the present invention.

FIG. 5 is an explanatory view showing a use state of a conventional bathtub hot water circulation fitting.

[Explanation of symbols]

 10, 10B Metal fitting body 11, 11B Hot water supply connection hole 12, 12B Hot water connection hole 110, 120, 110B, 120B Perforated projection 111, 121, 111B, 121B Bamboo tube 20 Flexible synthetic resin hose 30 Screwing expansion and contraction Metal band

Claims (1)

[Utility model registration claims] A pair of perforated projections respectively communicating with a hot water discharge passage and a hot water suction passage are integrally provided on a metal fitting body, and each of the perforated protrusions is respectively protruded as a bamboo child-like tube by turning tool cutting. It is formed so as to be able to be formed in the hot water supply connection hole and the return water connection hole of the metal fitting body, and a flexible synthetic resin hose containing a wire is externally fitted to each bamboo tube of the hot water supply connection hole and the return water connection hole. And a bathtub hot-water circulation fitting which can be tightened with a screw-fastened elastic band.