JPH1182855A - T-joint protected by cushioning material coating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a T-joint which can be easily underlaid and has an outer skin layer favorable in terms of a sanitary viewpoint, by connecting an end part of a sheath tube or a cushioning member to protect a multi directional and flexible resin tube to an end part of cushioning material or the outer skin layer. SOLUTION: Inner core parts 2 are provided in three directions of a T-joint 1, and a resin tube 3 coated with a sheath tube 5 is led into the T-joint 1, is fitted from outside to the outer peripheral surface of the inner core part 2 and is fixed by a pressure ring 4. The sheath tube 5 merely abuts on the pressure ring 4 under normal condition, if its diameter is appropriate, and never covers the pressure ring 4. The T-joint 1 with the resin tube 3 fitted from outside to the outer peripheral surface of the inner core part 2 in the three directions together with a connecting part fitted with the resin tube 3 from outside is coated for protection with cushioning material 6 made of a molded product of mixture of expanded polyethylene and expanded polystyrene, and a surface of the cushioning material 6 is coated with an outer skin layer 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a T-shaped joint covered with a joint covering cover. More specifically, it is a T-shaped joint disposed at an appropriate position of a water supply / hot water supply pipe used for a building such as a general house, an apartment house, a commercial building or a hotel, and is a three-way T-shaped joint and a joint. The present invention relates to a T-shaped joint protected by a cushioning material together with a connection portion between an end portion and a resin flexible tube (hereinafter, may be simply referred to as a “resin tube”).

[0002]

2. Description of the Related Art Conventionally, resin pipes are widely used in water supply and hot water supply pipes of general houses, apartment houses, commercial buildings or hotels from the viewpoints of corrosion resistance, earthquake resistance, sanitation, workability, and the like. It became so. Japanese Patent Application Laid-Open No. 5-1722 discloses a method for efficiently performing piping by combining a resin pipe with a branch pipe.
The method described in Japanese Patent No. 87 is proposed, but when an operator accidentally steps on the resin pipe during the construction work, drops a tool or the like on the resin pipe, or rubs the resin pipe with the slab surface. Has the disadvantage that it is easily damaged. For the purpose of preventing the resin pipe from being damaged, a method has been proposed in which the resin pipe is inserted into a sheath pipe to protect the pipe and to perform the work (Japanese Unexamined Patent Publication (Kokai) No. Heisei 3-
292487, JP-A-7-197495).

However, the method described in Japanese Patent Application Laid-Open No. 7-197495 (this method is referred to as a "sheath tube header method")
I may say. )), Connect multiple pipes to the header for water supply and hot water supply, and use the kitchen, washing machine, bathroom,
Water is supplied to each place of use, such as a washroom and a toilet, with individual dedicated pipes, so the length of the resin pipes to be laid becomes extremely long, which is not only economically disadvantageous, but also these multiple dedicated pipes However, there is a disadvantage that the construction work is complicated because each is laid separately.

Further, according to the method described in JP-A-3-292487, it is easy to lay a straight or curved resin pipe covered with a sheath, but the T-shaped joint portion is sheathed. Since it cannot be coated with a tube, it is left uncoated. The uncoated T-shaped joint is
Since it is made of metal material, it is unlikely to be damaged during laying work, but if the T-shaped joint is left uncovered with a covering cover, dirt and insects will enter through the gap at the end of the sheath, resulting in a sanitary viewpoint. Is not preferred.

[0005]

Under such circumstances, the present inventors have made intensive studies to complete the present invention as a result of providing a T-shaped joint in which all the drawbacks of the above-mentioned prior art are solved at once. Things. The objects of the present invention are as follows. 1. To provide an economically advantageous T-shaped joint in which the entire length of the resin pipe is not extremely long compared to the sheath header method. 2. To provide a T-shaped joint with less complicated laying work. 3. A straight or curved resin pipe, a T-shaped joint, and a connecting part between the three ends of the joint and the resin pipe are covered and protected by a cushioning material or a skin layer, and a preferable T-shaped joint from a sanitary viewpoint. To provide.

[0006]

According to the present invention, there is provided a T-shaped joint comprising three ends connected to a flexible resin tube protected by a sheath or a buffer member. The entire surface of the connection between the T-shaped joint and the joint and the flexible tube made of resin is covered and protected with a cushioning material, and the surface of the cushioning material is covered with a skin layer. A T-shape covered and protected by a cushioning material, wherein an end of the sheath or the cushioning member protecting the resin-made flexible tube is connected to an end of the cushioning material or the outer skin layer. Provide mold fittings.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
The T-shaped joint covered and protected by the cushioning material according to the present invention is made of a resin material such as a metal material, cross-linked polyethylene, or polybutene, and its plan view is formed by connecting portions with a resin pipe extending in three directions. Although the plan view is made to have a T-shape, it is not limited to a strictly T-shape but also includes a Y-shape. On the outer peripheral surface of the inner core portion, a concave and convex portion for externally fitting a resin pipe and stopping water is engraved along the circumference. The size of the inner diameter of the opening of the connection portion with the three resin tubes may be the same or different.

[0008] The resin pipe connected to the three sides of the T-shaped joint is a cross-linked polyethylene pipe, polybutene pipe, or the like. Can be selected and used. There is no particular limitation on connecting and fixing the resin pipe to the connection part of the T-shaped joint. For example, JIS B2354, JIS K6770, JI
Coupling device described in SK6779, 7-5543
What is necessary is just to fix by the joint apparatus of patent publication 8, etc.

[0009] The resin tube is protected by a sheath tube or a buffer member. As described above, the sheath tube or the cushioning member has a function of protecting between the resins so as not to be damaged when the worker steps on the construction work accidentally, drops a tool or the like, or rubs against the slab surface. . As a material constituting the sheath tube, a synthetic resin tube having flexibility, particularly a tube capable of winding a coil, such as a corrugated tube and a bellows tube, is used. Examples of the material of the corrugated tube and the bellows tube include polyvinyl chloride, polyethylene, polypropylene, polyvinylidene chloride, polycarbonate, and polyamides. Preferably, a buffer layer is provided between the sheath tube and the resin tube. This buffer layer is useful for counteracting the sound of the hammer caused by the water hammer phenomenon.

The cushioning member for protecting the resin tube is made of a foamed resin tape such as foamed polyethylene, foamed polypropylene, foamed polystyrene, foamed polyvinyl chloride, a non-woven fabric tape, or a tape made of these tapes and aluminum. A laminate with a film, a laminate with these tapes and an aluminum foil, and the like are included.

In the T-shaped joint according to the present invention, the entirety of the T-shaped joint and the connection between the three ends of the joint and the resin pipe is covered and protected by a buffer material. Examples of the material constituting the cushioning material include foamed synthetic resins such as foamed polyethylene, foamed polypropylene, foamed polystyrene, foamed polyvinyl chloride, a mixture thereof, glass wool, and the like, but are not limited thereto. .

In order to protect the coating, (1) a method of winding and covering the connecting portion between the T-shaped joint and the resin pipe with a buffer material formed in a belt shape in advance, and (2) the buffer material can be divided into two in advance. It is molded as a hollow cylindrical molded product, and T
(3) A T-shaped plate is formed in advance, and a T-shaped joint and a resin are formed on a surface where a cut is formed on one surface of the plate. A method of arranging and wrapping a connection portion of a pipe, and the like.

The thickness of the cushioning material varies depending on the type of the cushioning material, the location of the T-shaped joint, the size of the resin pipe, and the like.
It can be selected in the range of mm to 50 mm. For example, when the cushioning material is made of expanded polystyrene, 5 to 50 mm,
3 to 20 when composed of foamed polyethylene tape
mm and glass wool, it is preferable to select from 5 to 50 mm.

In the T-shaped joint according to the present invention, the surface of the cushioning material is covered with a skin layer. The outer skin layer has a function of covering the surface of the cushioning material and fixing it so as not to peel off from the connection portion of the T-shaped joint and the resin pipe. The outer skin layer may be made of a metal thin plate, a plastic film, a metal foil, a laminate of a plastic film and a metal foil, which covers the entire joint of the T-shaped joint and the resin pipe, or the whole or a part thereof. Metal tapes, metal foils, plastics, laminates, and the like, which are to be coated. A plastic film with an adhesive on the end so that it can be bonded and fixed,
Examples of the plastic tape include an adhesive tape having an adhesive applied to the end or the whole thereof, and a magic tape having a hook at the end. The outer skin layer may be used in combination with one that partially covers the surface of the cushioning material and one that entirely covers the surface.

In the T-shaped joint according to the present invention, the end of the sheath or the cushioning member protecting the resin tube is connected to the end of the cushioning material or the outer skin layer at three ends. Here, the connection means that a gap is not formed between the both ends by overlapping both ends.
This can prevent dust and insects from entering between the resin tube and the sheath tube or the buffer member.

In order to cover and protect the connection between the T-shaped joint and the resin pipe with the cushioning material, first, the resin pipe is fixed to the T-shaped joint at the construction site. Next, the surface of the portion where the T-shaped joint and the resin tube are fixed is covered and protected by a cushioning material. Finally, the surface of the cushioning material is covered and fixed with a skin layer. At this time, if the buffer material layer is thick, it is preferable that the sheath tube or the buffer member is inserted inside the buffer material, and the surface of the buffer material is covered with a skin layer. When the buffer material layer is thin, it is preferable that the end of the buffer material and the end of the sheath or the buffer member are abutted and covered with a skin layer so that the boundary between them is not separated.

The T-shaped joint covered and protected by the cushioning material according to the present invention is arranged at an appropriate place of a water supply / hot water supply pipe used for a building such as a general house, an apartment house, a commercial building or a hotel. By using this T-shaped joint, there is no need to separately lay pipes for water supply and hot water supply at a plurality of places of use, as in the conventional "pod sheath header method". The piping can be reduced to a minimum length, and the required resin pipe as a whole is not lengthened, which is economically advantageous, and the construction work is simple.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings, but the present invention is not limited to the following description unless it departs from the gist.

FIG. 1 is a perspective view of an example of a T-shaped joint covered and protected by a cushioning material according to the present invention, and FIG. 2 is a part of a state in which the T-shaped joint shown in FIG. FIG. 3 is a longitudinal sectional side view taken along the line III-III of FIG. 2, and FIG.
The conceptual diagram of an example which installed the piping for hot water supply is shown.

The T-shaped joint 1 is provided with inner core portions 2 in three directions. The resin tube 3 is guided to the T-shaped joint 1 while being covered with the sheath tube 5, and the inner core portion 2 is formed.
A resin tube 3 is fitted on the outer peripheral surface of the resin tube 3, and the resin tube 3 is fixed by a holding ring 4. Although it depends on the diameter of the sheath tube 5, the sheath tube 5 normally only abuts on the holding ring 4 and does not cover the holding ring 4 (see FIG. 2).

FIGS. 2 and 3 show a T-shaped joint 1 in which a resin pipe 3 is externally fitted to the outer peripheral surface of an inner core portion 2 in three directions.
An example is shown in which the joint portion where the resin tube 3 is externally fitted is also covered with a cushioning material 6 made of a molded article of a mixture of foamed polyethylene and polystyrene, and the surface of the cushioning material 6 is covered with a skin layer 7. In FIG. 3, since the flat cushioning material layer is thick, a cut 10 is formed and curved, the entire cushioning material 6 is covered with a skin layer 7, and an adhesive 8 applied to the end of the skin layer is applied.
An example is shown in which the cushioning material is fixed by bonding.

FIG. 4 is a conceptual diagram of an example in which a water supply / hot water supply pipe is actually constructed using the T-shaped joint covered and protected by the cushioning material according to the present invention. In FIG. 4, 31 is a main water supply pipe, 32 is a water supply header, 33 is a water heater, 34 is a hot water supply header, and 35 is a T-shaped joint. The use of water and hot water supplied from the header is clear from FIG. is there. In FIG. 4, three water supply pipes are connected to the water supply header 32, and one T-shaped joint 35 is installed in one water supply pipe and distributed to two places of use.
An example is shown in which two hot water supply pipes are connected, and one T-shaped joint 35 is installed in one water supply pipe and distributed to two use places. However, the present invention is not limited to this example, and it is also possible to use one pipe for water supply and hot water supply, increase the number of T-shaped joints installed in this pipe, and omit the water supply header 32 and the hot water supply header 34.

[0023]

The present invention has the following particularly advantageous effects, and its industrial value is extremely large. 1. As in the sheath header method, there is no need to lay pipes for hot water supply and water supply at multiple locations, and the length of the pipes for water supply and hot water supply can be minimized. It is very advantageous. 2. As in the case of the sheath header method, there is no need to lay pipes for supplying water and hot water individually at a plurality of places of use, so that the construction work is simple. 3. The T-shaped joint according to the present invention is preferable from a sanitary point of view, since both the T-shaped joint and the connecting portion to the resin pipe connected to the T-shaped joint are covered and protected by the buffer material.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of a T-shaped joint covered with a joint covering cover according to the present invention.

FIG. 2 is a partially cutaway plan view showing a state where the T-shaped joint shown in FIG. 1 is cut at a maximum diameter portion.

FIG. 3 is a vertical sectional side view taken along a line III-III of FIG. 2;

FIG. 4 shows a hot water supply using a T-shaped joint according to the present invention.
It is a conceptual diagram of an example in which the pipe for water supply was constructed.

[Explanation of symbols]

 1: T-shaped joint 2: inner core portion 3: resin flexible tube (resin tube) 4: holding ring 5: sheath tube 6: cushioning material 7: outer skin layer 8: adhesive 10: cut 31: main water supply Piping 32: Water supply header 33: Water heater 34: Hot water header 35: T-shaped joint

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kazuhiro Sueyoshi 1-20-5 Chiyoda, Yokkaido, Chiba

Claims (1)

[Claims] 1. A T-shaped joint in which a resin-made flexible tube protected by a sheath tube or a buffer member is connected to three ends of the T-shaped joint. The entire surface of the connection portion of the flexible tube is covered and protected with a cushioning material, and the surface of the cushioning material is covered with a skin layer,
An end of a sheath or a buffer member protecting the three-side resin flexible tube is connected to an end of the buffer material or the outer skin layer. T
Shaped joint.