JPH051750Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention is a double-sheathed pipe structure that is installed on the back side of the wall of a building, and the fluid supply pipe that is pulled out from the sheathed pipe and protrudes toward the front side of the wall can be used for water faucets, gas valves, faucets, etc.
This invention relates to a fluid supply pipe connection section using double piping to which an accessory such as a heat exchanger can be connected.

[Conventional technology]

The connection of fluid supply pipes using conventionally known double piping uses a curved pipe joint (elbow pipe) 1, as shown in FIG. A fluid supply pipe 6 made of plastic such as polyethylene, which is inserted into the sheath pipe 5, is inserted and fixed into the window hole 2a of the wall body 2 using the fixing rings 3 and 4, and inserted into the concealed side opening 1a of the pipe joint 1. The pipe joint 1 is connected by a cap nut 7, and an accessory 8 such as a faucet can be attached to the exposed side opening 1b of the pipe joint 1.

[Problem that the invention attempts to solve]

For example, when installing a water supply connection using a fluid supply pipe with a double piping structure in a washroom or flush toilet, if the above-mentioned conventionally known connection is applied, the fluid supply inserted through the pipe joint 1 and the sheath pipe 5 The connection to the pipe 6 is a concealed connection on the back side of the wall 2. With such a concealed connection, fluid leakage from the connection cannot be confirmed from the outside, and repair work in the event of a leak or work to replace the fluid supply pipe 6 with a new one requires destroying a part of the wall. However, since it is necessary to provide an opening for working, the maintenance and maintenance work thereof becomes extremely complicated and also poses a big problem in terms of cost.

[Means to solve the problem]

This invention solves the above problems, and
The purpose of this is to insert the fluid supply tube that is inserted into the sheath tube and run along the back surface of the wall, and pull it out to the surface of the wall, and then insert the drawn part into the support tube that protrudes from the surface of the wall. An object of the present invention is to provide a connection part for a fluid supply pipe using double piping, which is improved so that the fluid supply pipe can be connected at the tip end (mouth end) side of the support pipe, that is, at the exposed part on the surface side of the wall body. . Therefore, the above object of the present invention is to provide a curved pipe joint in which one end opening faces the surface of the wall and the other end is connected to a sheath pipe laid along the back surface of the wall. A support pipe is attached to the back side of the wall and connected to one end of the pipe joint, and a fluid supply pipe is inserted from the sheath pipe through the pipe joint into the support pipe that protrudes to the front side of the wall. Connect the connection port of the fluid supply pipe pulled out from the support tube to the lower port of the connection fitting, and fix this connection fitting to the support tube with a fixing nut screwed onto the mouth end of the support tube. This is achieved by a fluid supply pipe connection with a double piping structure.

[Effect]

In a fluid supply pipe whose sheath pipe is laid on the back side of the wall, the part pulled out from the sheath pipe to the surface side of the wall is inserted into the support pipe and held, while the fluid supply pipe is placed on the lower side. The connecting fitting connected to the opening is firmly connected to the support tube by screwing a fixing nut onto the support tube, and the connection portion of the fluid supply tube, which is in a stable installation condition, is configured on the exposed side of the wall surface. can.

【Example】

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 and 2, one end opening 12 of a curved pipe fitting (elbow pipe) 11 facing the surface side of the wall w is open, and the other end opening 13 of the pipe fitting 11 is opened. A tip opening 15 of a sheath pipe 14 laid along the back surface is connected. A support pipe 16, which is a decorative pipe such as a chrome-plated pipe, is connected to the opening 12 at one end of the pipe joint 11 in a state that protrudes laterally from the wall w, and the connection is made by a female thread 12a provided on the pipe joint 11 side. This is accomplished by screwing the male thread 16a provided on the support tube 16 side. The pipe joint 11 and the sheath pipe 14 are connected using a connecting ring 17, and the pipe joint 11 is fixed to a structure on the back side of the wall w using a support fitting 18, and 18a indicates the fixing point. This is a screw hole for use. A fluid supply pipe 19 is inserted into the support pipe 16 from the sheath pipe 14 through the pipe joint 11, and the connection port 19a of the fluid supply pipe 19 is connected to the lower port 22 of the connection fitting 21. Upper mouth part 2 of 21
Attachment 20 such as a faucet is connected to 3. A flange portion 24 is provided at the center portion of the connection fitting 21. A fixing nut 25 is loosely fitted into the connecting fitting 21, and this fixing nut 25 is screwed into a male thread 16b provided on the mouth end side of the support tube 16. The connecting fitting 21 is tightened by the edge 25a, the connecting fitting 21 is coupled to the support tube 16, and the fluid supply tube 19 is supported together with the connecting fitting 21 at the distal end of the supporting tube 16. To explain the connection between the fluid supply pipe 19 and the connection fitting 21 in more detail, the connection port 1 of the fluid supply pipe 19
9a is strongly clamped by an inner core 26 and a tightening ring 27. A cap nut 28 is fitted into this clamped portion, and the cap nut 28 is attached to the connecting fitting 21.
When the male thread 22a provided on the outer periphery of the lower opening 22 is screwed together and tightened, the connecting opening 19a of the fluid supply pipe 19 connects to the inner core 26 and the tightening ring
The fluid supply pipe 19 and the connecting fitting 21 are tightly connected to each other by being tightened into the lower opening 22 of the connecting fitting 21 through the connecting fitting 21 . In this connected state, tighten the bag nut 28.
When the support tube 16 and the connecting fitting 21 are brought into contact with the mouth end of the support tube 16 and the connecting fitting 21 is tightened with the fixing nut 25 as described above, the supporting tube 16 and the connecting fitting 21 are firmly connected. Note that the fluid supply pipe 19 is made of a plastic pipe such as polyethylene, and a shoulder 22b is provided on the inner side of the lower opening 22 of the connection fitting 21, and this shoulder 22b and the support pipe 16 A sealing gasket (not shown) is attached to the joint between the mouth end of the cap nut 28 and the cap nut 28.

[Effect of the idea]

The present invention is as described above, in which a support pipe is connected to a pipe joint whose one end opening faces the surface side of the wall body, and the support pipe is passed through the support pipe protruding toward the surface side of the wall body. Since the fluid supply pipe can be inserted into the sheath pipe laid on the back side, the work of laying the fluid supply pipe and the work of connecting it with the connecting fittings can be done on the exposed surface side of the wall. The pull-out part is inserted into the support tube and is stable, making it easy and strong to connect with the connecting fittings, and there is no need to worry about water droplets adhering to the support tube, making it possible to provide a connection with excellent appearance. . In addition, there is no need for on-site insulation work, and maintenance and maintenance work is easy, and this combined with the fact that it has extremely great practical value.

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing an embodiment of the present invention;
The figure is an exploded perspective view of the main parts of the same as above, and FIG. 3 is a side sectional view showing a conventional connection part. In the figure, 11 is a pipe joint, 12 is an opening at one end, 13 is an opening at the other end, 14 is a sheath tube, 16 is a support tube, 16b is a male thread, 19 is a fluid supply tube, 19a is its connection opening, and 21 is a Connection fittings, 22 is a lower opening, 22a is a male screw, 25 is a fixing nut, 26 is an inner core, 27 is a tightening ring, 28 is a cap nut, w
is a wall.

Claims (1)

[Claims for Utility Model Registration] (1) A curved pipe whose opening at one end faces the front surface of the wall and whose opening at the other end is connected to a sheath pipe laid along the back surface of the wall. A joint is attached to the back side of the wall, a support pipe is connected to one end of the pipe joint, and a fluid supply pipe is inserted from the sheath pipe through the pipe joint into the support pipe protruding from the front side of the wall,
The connection port of the fluid supply pipe pulled out from the support tube is connected to the lower port of the connection fitting, and the connection fitting is fixed to the support tube with a fixing nut screwed onto the mouth end of the support tube. 1. A fluid supply pipe connection part using double piping, characterized in that the connection part comprises: (2) The connecting port of the fluid supply pipe is clamped by the inner core and the tightening ring, and this clamped part is inserted into the lower opening of the connection fitting to form a bag that is screwed into the lower opening. 2. The fluid supply pipe connection portion using double piping according to claim 1, wherein the connection port portion is connected to a connection fitting by a nut.