JPH10274381A - T type joint covered with cover covering joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a resin pipe so that the full length thereof is restricted in comparison with a sheath pipe heater method so as to improve the profitability by continuously providing a sheath pipe for protecting a flexible pipe made of resin to openings, which are formed in three directions of a joint cover for covering the whole of a T type joint and connection parts of ends of the joint in three directions and the resin pipes. SOLUTION: Each resin pipe 3, which is led to a T type joint 1 provided with inner covers 2 in three directions in the condition that each core is covered with a sheath pipe 5, is fitted on an outer peripheral surface of each inner core 2, and fixed by a presser ring 4. This T type joint 1 and each connection part thereof, which is fitted on a resin pipe 3, are covered with an upper cover and a lower cover 7 for covering the fitting from over and under thereof. Each flange 8 provided in an opening end of the upper cover and the lower cover 7 is fitted in each groove 5 of the sheath pipe 5 so as to eliminate the generation of clearance between the opening end of the joint cover and the sheath pipe 5. A buckle is stretched over both projections 9 provided near a dividing surface of the upper cover and the lower cover 7 so as to strongly fix both the covers.

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 T-shaped joint and a three-way joint. The present invention relates to a T-shaped joint covered with a joint covering cover 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. Resin pipes are easily damaged when workers step on them accidentally, drop tools, or rub against the slab surface during construction work. A method of inserting, protecting, and constructing has been proposed (JP-A-3-292.
487, 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 a T-shaped joint covered with a covering cover that is economically advantageous in that the entire length of the resin pipe is not extremely long as compared with the sheath pipe header method. 2. To provide a T-shaped joint covered with a sheathing cover that is less complicated to lay. 3. To provide a straight or curved resin pipe, a T-shaped joint, and a T-shaped joint that is preferable from a sanitary point of view, in which a connecting portion between the three ends of the joint and the resin pipe is covered with a covering cover.

[0006]

In order to solve the above-mentioned problems, the present invention provides a T-shaped joint in which a resin flexible pipe protected by a sheath is connected to three ends of a T-shaped joint. In the joint, the entire joint between the T-shaped joint and the three ends of the joint and the resin pipe is covered with a joint covering cover, and the sheath protecting the flexible pipe made of resin is formed by the joint. A T-shaped joint covered with a joint covering cover, characterized in that the T-shaped joint is connected to three openings of the covering cover.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The T-shaped joint covered with the joint covering cover according to the present invention,
The plan view is made of a metal material, and its plan view is made to have a T-shape in plan view by inner core portions extending in three directions. On the outer peripheral surface of the inner core portion, a concave / convex portion for externally fitting a resin pipe (a flexible pipe made of resin) and stopping water is formed along the circumference. The sizes of the inner diameters of the openings of the three inner core portions may be the same or different. When the inner diameter of the opening of the inner core portion is reduced, the diameter of the outer peripheral surface is preferably reduced accordingly.

[0008] The resin pipe to be externally fitted to the three inner core portions of the T-shaped joint is a cross-linked polyethylene pipe, a polybutene pipe, or the like. A resin tube having a matching inner diameter may be selected and used. A resin tube is fitted around the outer peripheral surface of the inner core,
There is no particular limitation on fixing, for example, JIS B23
54 and a joint device described in Japanese Utility Model Publication No. 7-55438.

The resin tube is protected by a sheath tube.
As described above, the sheath tube has a function of preventing an operator from accidentally stepping on the construction work, dropping a tool or the like, or rubbing against the slab surface to prevent damage. 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.

[0010] The T-shaped joint according to the present invention is covered with a joint covering cover. The joint covering cover covers the T-shaped joint and the connection between the three ends of the T-shaped joint and the resin pipe. The size of the joint covering cover is set to a size that also covers a cap nut and a ring for externally fitting and fixing the resin pipe to the inner core portion of the T-shaped joint main body. It is preferable that the joint covering cover has a structure that can be divided into upper and lower portions at a maximum diameter portion, and a fixing portion such as a hook or a protrusion is provided to face the vicinity of the upper or lower dividing surface. To fix the upper and lower joint covering covers, the upper and lower split surfaces are brought into contact with each other, and a buckle, metal wire, or other fixing tool is hooked over the hooks and projections provided near and facing the split surfaces. It can be fixed by tightening firmly.

Further, if a flange is provided at the three opening portions of the joint covering cover so as to fit into the groove of the sheath tube covered with the resin tube, the ends of the sheath tube are connected by the flange of the joint covering cover. Holding). As a result, it is possible to prevent a gap from being formed at the joint between the two, and it is also possible to prevent dust and insects from entering between the resin tube and the sheath.
The joint covering cover that can be divided into two and has a flange at the opening is
It can be adjusted by welding using a metal plate such as a tin plate as a material, but preferably made of a synthetic resin such as polypropylene, polyethylene, polyvinyl chloride, ABS resin, polycarbonate, etc., and injection molding from these synthetic resins It can be more easily prepared by the method.

In order to cover the T-shaped joint with the joint covering cover, first, a resin pipe is fixed to the T-shaped joint at a construction site. Then, the T-shaped joint and the portion to which the resin pipe is fixed are covered from above and below by an upper covering cover and a lower covering cover, and as described above, the divided surfaces of the upper and lower covering covers are brought into contact with each other, and the upper and lower divided surfaces are contacted. A fastener such as a buckle or a metal wire may be hooked and fixed to a hook or a protrusion provided to face the vicinity of.

T covered with the joint covering cover according to the present invention
The U-shaped joint is 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. 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.

[0014]

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 with a joint covering cover according to the present invention, and FIG. 2 is a perspective view of the T-shaped joint shown in FIG.
FIG. 3 is a partially cutaway plan view showing a state in which the T-shaped joint is cut at the maximum diameter portion, and FIG. 3 is a conceptual diagram of an example in which piping for water supply and hot water supply is constructed using the T-shaped joint according to the present invention. .

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).

The T-shaped joint 1 in which the resin pipe 3 is externally fitted to the outer peripheral surface of the three-way inner core portion 2 has an upper cover 6 for joint coating and a lower cover for joint coating, both in the joint where resin pipe is externally fitted. 7 from above and below. A flange 8 is provided at the open ends of the cover 6 and the cover 7, and the flange 8 is
The gap between the open end of the covering cover and the sheath tube can be eliminated by fitting into the groove. In addition, the cover 6
If the projections 9 are provided in advance in the vicinity of the dividing surface of the cover cover 7 in advance, the buckle 1
By crossing over 0, both can be firmly fixed so as not to separate.

FIG. 3 is a conceptual diagram of an example in which piping for water supply and hot water supply is actually constructed using the T-shaped joint covered with the covering cover according to the present invention. In FIG. 3, 31 is a main water supply pipe, 32 is a water supply header, 33 is a hot water supply, 34 is a hot water supply header, and 35 is a T-shaped joint. The applications of water and hot water supplied from the header are clear from FIG. is there. In FIG. 3, three water supply pipes are connected to the water supply header 32, 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, it is not limited to this example.
It is also possible to use one pipe for hot water supply and increase the number of T-shaped joints installed in this pipe to omit the water supply header 32 and the hot water supply header 34.

[0019]

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 with the resin pipe connected to the T-shaped joint are covered with the covering cover.

[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 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: joint cover upper cover 7: joint cover lower cover 8: flange 9: Projection 10: Buckle 31: Main water supply pipe 32: Water supply header 33: Water heater 34: Hot water header 35: T-shaped joint

Claims (3)

[Claims] 1. A T-shaped joint in which a resin flexible pipe protected by a sheath is connected to three ends of the T-shaped joint. And the entire connection portion of the resin-made flexible tube is covered with a joint covering cover, and the sheath protecting the resin-made flexible tube is connected to three openings of the joint covering cover. A T-shaped joint covered with a joint covering cover. 2. The joint covering cover has a structure capable of being vertically divided into two parts at a maximum diameter portion, and a fixing member locking portion such as a hook or a projection is provided so as to face the vicinity of a division surface of the upper and lower covering covers. The T-shaped joint according to claim 1, comprising: 3. The T-shaped joint according to claim 1, wherein a flange that fits into a groove of the sheath tube is provided at three openings of the joint covering cover.