JPH0618112Y2 - Flexible tube - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a flexible pipe for connecting, for example, a water pipe and a water meter.

[Prior Art] Conventionally, a lead pipe has been used to connect a water pipe and a water meter.

[Problems to be solved by the device]

Since it is a lead pipe, it is vulnerable to freezing and external damage, is easily attacked by alkali, and has a problem of lead damage.

Therefore, an object of the present invention is to provide a flexible tube that is resistant to freezing and external damage and is not easily attacked by alkali.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention has a flexible tube made of metal such as stainless steel having straight mouth tubes at both ends, and a cap nut rotatably provided on the outside of the ends of the both mouth tubes by means of a fall prevention means. A rubber-made first coating provided on the entire outer circumference of the flexible tube excluding the mouth tube, a metallic net tube having rings at both outer circumferences fitted so as to cover the entire length of the first coating, and the ring It is constituted by a second rubber coating provided so as to cover the outer circumference of the mouth tube from the entire surface to the cap nut.

[Action]

Connect the water meter to the water pipe through the flexible pipe by screwing in the cap nut.

Further, since the outer circumferences of the flexible tube and the double-ended tube of the flexible tube are covered with the rubber first coating and the second coating, rust generation and freezing are prevented, and at the same time, they are not easily attacked by alkali.

Furthermore, the expansion is stopped by the net tube.

〔Example〕

Hereinafter, an embodiment according to the present invention will be described with reference to the accompanying drawings.

In the figure, 1 is a flexible tube made of metal such as stainless steel, and straight mouth tubes 2 are provided at both ends of this flexible tube.

Further, a cap nut 3 provided with a drop-out preventing means is rotatably provided outside the ends of the double-ended tube 2.

In the illustrated case, the above-mentioned fall-out preventing means is bent in a U-shape so that the front side of the end of the mouth tube 2 is projected to the outside of the peripheral wall, and the flange 4
The cap nut 3 is engaged with the flange 4.

It should be noted that, as shown in the drawing, when the ring 5 is placed inside the flange 4 so as not to fall off due to the flange 4 and the cap nut 3 is engaged with the ring 5, It is possible to eliminate the problem that an unreasonable force acts on the flange 4 when the cap nut 3 is screwed in.

Reference numeral 6 denotes a rubber first coating provided so as to cover the entire outer circumference of the flexible tube 1 excluding the double-ended tube 2.

The first coating 6 prevents freezing and prevents rust from being generated by being invaded by alkali when it is buried in the ground.

Reference numeral 7 is a metal net tube made of stainless steel or the like that covers the first coating film 6.

The net tube 7 prevents the flexible tube 1 from being damaged by expansion.

Reference numeral 8 denotes a rubber second coating covering the outer peripheral cap nut 3 of the mouth tube 2 to the end of the net tube 7. The second coating 8 has a net tube 7 side on the outside of the end of the net tube 7. The ring 9 fixed by attachment or the like is extended so as to cover the ring 9 to prevent the second coating 8 from being released from the net tube 7, and also to prevent freezing, rust, and alkali attack.

The opposing ends of the first coating 6 and the second coating 8 overlap.

A rubber coating (not shown) is provided on the outside of the net tube 7.
It may be covered by.

The flexible pipe A configured as described above connects the water meter to the water pipe by screwing in the cap nut 3.

〔effect〕

As described above, the flexible tube according to the present invention is the first
The coating and the second coating have the advantages of preventing freezing, being resistant to external damage, and being resistant to alkalis.

Moreover, since the expansion of the flexible tube is stopped by the metal net tube, damage can be prevented.

Furthermore, since the end of the second coating is engaged with the ring of the net tube, peeling of the second coating from the net tube can be stopped.

[Brief description of drawings]

The drawing is a partially cutaway side view of a flexible tube according to the present invention. A: flexible tube, 1 ... flexible tube, 2 ... mouthpiece, 3 ... cap nut, 4 ... flange, 5 ... ring, 6 ... first coating, 7 ... net tube, 8 ... Second coating.

Claims (1)

[Scope of utility model registration request] 1. A flexible tube made of metal such as stainless steel having straight mouth tubes at both ends, a cap nut rotatably provided on the outside of the ends of the both mouth tubes by means of a fall prevention means, and a mouth of the flexible tube. A rubber-made first coating provided on the entire outer circumference except for the cylinder, a metal net tube having rings at both outer circumferences fitted so as to cover the entire length of the first coating, and a cap nut from the entire circumferential surface of the ring. A flexible tube consisting of a rubber second coating provided so as to cover the outer circumference of the mouth tube up to.