JP2004044678A - Saddle corporation cock for thermoplastic resin piping - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that, although main piping made of thermoplastic high density polyethylene resin having flexible viscosity and capable of flexibly absorbing vibration upon earthquake is used for a saddle corporation cock, since the corporation cock used upon diversion is made of metal such as gun metal, the outer surface of the resin is hardly familiar with the outer surface of metal such as the gun metal to generate a slip on an interface, and accordingly, the corporation cock for such main piping is entirely made of a resin, however, a complicated work is difficult so that the corporation cock entirely made of the resin cannot have a stop valve mechanism as in the metallic cock. <P>SOLUTION: The metallic corporation cock main body is connected to the upper end of a metallic joint base 4 having a fitting part whose surface is made of a resin that is formed by inserting a thermoplastic resin coat tube 44 with an inside diameter slightly smaller than the outside diameter of a metal core tube 43 into the metal core tube 43 that undergoes a surface work to a slip preventive engaging form for preventing a rotation. Thus, the fitting part is fitted and fixed to a seat hole on the upper surface of an upper holding member of a thermoplastic resin saddle. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
[Industrial applications]
The present invention relates to a saddle water faucet for a thermoplastic resin pipe used for water distribution from a water distribution main pipe made of a thermoplastic synthetic resin to a specific pipe.
[0002]
[Problems to be solved by the invention]
Conventionally, cast iron pipes, vinyl chloride pipes, steel pipes, etc. have been used as water distribution main pipes for water supply, but all have strong and brittle surfaces, so they are easily damaged in the event of an earthquake, especially when PVC is used. There are cases where water leaks due to cracks.
[0003]
Therefore, recently, a water distribution main pipe made of a thermoplastic resin such as high-density polyethylene, which can flexibly absorb and cope with some vibration during an earthquake or the like due to the material having a flexible viscosity, has come to be used. I have.
[0004]
However, the material of the saddle faucet used for water distribution from the water distribution main pipe to the specific piping is metal such as gunmetal, and the outer surface of the thermoplastic resin and the metal outer surface such as gunmetal are not easily compatible with each other. However, there is a problem in processing such as the occurrence of slippage, and a water faucet used for a water distribution main pipe made of a thermoplastic resin has been used which is entirely made of a thermoplastic resin.
[0005]
However, since thermoplastic resin requires a large amount of cost for mold production and complicated processing is difficult, a water faucet made entirely of thermoplastic resin has a stopper such as a ball valve in a metal stopper. No faucet mechanism can be provided.
[0006]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and a metal water faucet main body is combined with a vertical uneven strip for preventing rotation and a horizontal uneven flange for preventing loosening, and is non-slip locked. A metal joint provided with a fitting part made of a surface resin, which is formed by press-fitting a thermoplastic resin sheathing cylinder with an inner diameter slightly smaller than the outer diameter of the same core cylinder into a metal core cylinder whose surface is processed into a shape. By screwing to the upper end of the base and fitting the insertion portion into the upper seating hole of the upper holding body of the thermoplastic resin saddle, a precision machined portion made of a metal material and an earthquake-resistant structure made of a thermoplastic resin material The parts were combined.
[0007]
In addition, the outer surface of the thermoplastic resin high-density polyethylene coating cylinder at the upper seat inner wall of the upper holding body of the thermoplastic resin high-density polyethylene saddle or the fitting part of the upper base holding body of the joint base, and the resin pipe contact surface of the upper holding body A heating wire is buried in the thermoplastic synthetic resin surface joint, etc., and after the assembly and joining, power is applied to melt and join the thermoplastic resin joint. It is complete.
[0008]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a metal water faucet main body, which is fitted and fixed in an upper surface seating hole 21 of an upper holding body 2 of a saddle made of a thermoplastic resin high-density polyethylene which sandwiches and encloses a water distribution main pipe made of a thermoplastic resin high-density polyethylene. Screwed to the upper end of the joint base 4.
[0009]
The upper part of the joint base 4 is a water faucet joint 41 for screwing the water faucet main body 1, and the lower part is a fitting part 42 fitted into the upper surface seat hole 21 of the upper holding body 2. A metal core tube 43 formed integrally with the joint portion below the joint portion 41 and having a non-slip engagement shape processed on the outer surface is provided with a thermoplastic resin having an inner diameter slightly smaller than the outer diameter of the same core tube. A cover cylinder 44 made of resin high-density polyethylene is press-fitted and has a structure in which the surface is covered with a thermoplastic resin of the same quality as the upper surface seat hole 21.
[0010]
FIG. 3 shows an example of a non-slip engagement shape formed on the outer surface of the metal core tube 43. A knurling process 45 in which vertical grooves are arranged in parallel at the base of the joint portion 41 is performed, and a tapered flange 46 is formed at the lower portion thereof. , A locking flange 47 is provided at the lowermost end.
[0011]
The fitting of the coating cylinder 44 to the metal core cylinder 43 is performed by heating the coating cylinder 44 in an atmosphere of about 45 degrees Celsius, and fitting the O-ring 51 into a groove 48 provided between the knurling 45 and the tapered flange 46. Within one minute after the heating, the coating cylinder 44 is press-fitted, and the caulking ring 5 is further press-fitted.
[0012]
The inner diameter of the coating cylinder 44 is pressed against the knurling 45 by the shrinkage after the heating press-fitting and the pressing from the outer circumference by the caulking ring 5, and the inner wall surface of the coating cylinder 44 slides on the outer peripheral surface of the metal core cylinder 43 and turns. In addition to preventing movement, the tapered flange 46 and the locking flange 47 prevent loosening of the coating tube 44.
[0013]
The fitting portion 42 configured as described above is fitted and fixed in the upper surface seating hole 21 of the upper holding member 2 made of thermoplastic resin of the same quality as the covering tube 44, and the upper holding member 2 is located below the water distribution main pipe A. The lower main body 3 is inserted around the lower main body 3 to hold and hold the water distribution main pipe.
[0014]
The water faucet main body 1 joined to the upper end of the joint base 4 has a connection opening 11 for connecting to a water supply branch pipe and a ball valve operating mechanism 12 on the side, and a vertical drilling machine via a ball valve 13 on the upper part. An insertion hole 14, a ball valve storage portion 15 in the center portion for receiving the ball valve 13 by being engaged with the operation mechanism 12, and a lower portion serving as a screwing portion 16 which is screwed with the joining portion 41 at the upper end of the joint base 4. A water distribution mechanism is configured to divide water from the main pipe A to the water supply branch pipe through the connection opening 11.
[0015]
Further, heating wires 22 and 23 are buried in the upper holding body 2 at a contact surface portion which covers the inner wall of the upper surface seat hole 21 and the upper surface portion of the water distribution main pipe A. It is configured to melt-join the resin joint.
[0016]
Attachment of the water faucet is performed by inserting the lower holding body 3 under the water distribution main pipe A, engaging with the upper holding body 2, clamping and holding the water distribution main pipe, and connecting and opening the connection opening. A water supply branch pipe is connected to the section 11, the cap 6 is removed, the ball valve 13 is rotated, and a drilling machine is inserted from above through the drilling machine insertion hole 14 in the vertical direction, and the water distribution hole 7 is bored in the water distribution main pipe.
[0017]
After drilling the water passage hole 7 in the water distribution main pipe, the ball valve 13 is stopped in a state where the water flow from the drilled water passage hole 7 is stopped by stopping the drilling machine at an upper position where the ball valve 13 can be rotated. Is turned to close the drilling machine insertion hole 14, and after the cap 6 is fitted, the ball valve 13 is again rotated to release the drilling machine insertion hole 14 to complete the water distribution.
[0018]
Since the present invention is configured as described above, the thermoplastic resin high-density polyethylene saddle water faucet, which is a material excellent in earthquake resistance and creep resistance, has a problem. By combining the seismic resistant structural parts, a saddle water faucet that can be used for a thermoplastic resin distribution main pipe can be constructed.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional front view of a saddle water faucet for thermoplastic resin pipe according to an embodiment of the present invention. FIG. 2 is a side view. FIG. Enlarged front view of the joint base before press-fitting the sheathing cylinder [Description of reference numerals]
DESCRIPTION OF SYMBOLS 1 Distributor main body 11 Connection opening with water supply pipe 12 Ball valve operating mechanism 13 Ball valve 14 Drilling machine insertion hole 15 Ball valve housing 16 Threaded part 2 screwed with the upper end of joint base 2 Upper holding body 21 Upper wrapping Upper surface seating hole 22 of holding body Heating wire embedded in contact surface portion 23 Heating wire embedded in contact surface portion 3 Lower holder 4 Joint base 41 Joint base 41 with water faucet main body 42 Fitting portion 43 fitted into upper surface seating hole 43 Metal core tube 44 Heat Plastic resin coating tube 45 Knurling 46 Taper flange 47 Locking flange 48 Groove 5 Caulking ring 51 O-ring 6 Cap 7 Water hole A Water distribution main pipe

Claims (2)

To a metal core cylinder whose surface is processed into a non-slip engagement shape that prevents rotation of the metal water faucet body, a thermoplastic resin sheathing cylinder with an inner diameter slightly smaller than the outer diameter of the same core cylinder It was joined to the upper end of a metal joint base provided with a fitting portion made of press-fitted surface resin, and the fitting portion was fitted and fixed in a seat hole on the upper surface of the upper holding body of the thermoplastic resin saddle. Saddle drain faucet for thermoplastic resin piping Interview of thermoplastic synthetic resin such as thermoplastic resin coated cylinder outer surface of the upper seat inner wall of the upper enclosure of the thermoplastic resin saddle or the joint base upper enclosure insertion part, and the resin piping interface of the upper enclosure 2. A saddle water faucet for a thermoplastic resin pipe according to claim 1, wherein a heating wire is buried in the joint portion, and a current is supplied after the assembly and joining to melt and join the thermoplastic resin joint.

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