JPS5824687A - Hollow ring tube for seal combining pipe joint - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hollow tube L-tube for use as a pipe insert and seal.

Generally known pipe joints have a liquid-tight structure in addition to the pipe interconnection structure, and therefore have a very complex structure. There are also structures that can adapt to bending changes that occur when piping is installed above the water surface, but they have the disadvantage that they become disconnected when an axial force is applied. In particular, when a hollow ring tube with an annular cross-section is used as a connecting part, it exhibits an excellent sealing effect unless axial force is applied. However, when axial force is applied, the outer diameter and inner diameter of the hollow ring tube When forces in opposite directions act on the hollow ring tubes, the hollow ring tubes roll.In particular, when axial tensile force acts on the tubes, the tubes come apart, so the hollow ring tube itself can be expected to have the effect of holding the connections between the tubes. I couldn't.

The present invention has focused on the conventional pipe joint structure and the liquid-tight structure for maintaining liquid-tightness, and has developed a pipe joint structure that can serve both purposes of maintaining connection between pipes and maintaining liquid-tightness. The purpose of this invention is to provide a hollow ring tube for sealing, which is a hollow ring tube with an annular cross section, characterized in that it is partially or entirely made of a material that does not stretch in the circumferential direction of the ring or is difficult to work with. The gist is hollow ring tube for tube di-9 and seal.

FIG. 1 is a partially cutaway perspective view of a hollow ring tube according to the present invention, showing a tube body 1 made of a rubber material.
A campus 2 that does not extend in the circumferential direction of the ring is interposed on the inner diameter of the ring, and a fluid filling supply port 3 is provided on the outer diameter of the ring.

2 to 10 show other embodiments in which a member for preventing the ring from expanding in the circumferential direction is interposed or bonded. Figure 3 shows a configuration in which the canvas 2 is glued to the surface of the inner diameter of the tube body 1.
4 and the wire 5 is interposed, Fig. 4 shows the inner diameter of the tube body 1, and when the gap 4 is present and the wire 5 is exposed, Fig. 5 shows the rubber ring band that is difficult to stretch. 6 and an expanding rubber ring band 6' are overlapped with each other with the rubber ring band 6 as the inner diameter side, and both layers are fastened 7 to form a hollow chamber 8. Fig. 6 shows the structure of the tube body 1. 7 shows a configuration in which canvas 2 is glued and fixed to the outer diameter surface of tube body 1, and FIG. Tube body 1
A hard rubber 9 whose elongation is smaller than that of the tube body 1 is integrally bonded to the center of the inner diameter of the tube body 1, and soft seal portions 10 and 10' are formed on both sides of the hard rubber 9. When the canvas 2 is interposed on the entire inner circumference of the tube body 1 having an annular cross-section, Fig. 1θ shows that two tube bodies 1 are glued together in parallel, and the inner diameter and outer diameter of the canvas 2 are interposed. It has a configuration in which campus 2 is glued to both sides.

Figures 11 to 13 show the state of use, and Figure 11 shows the case where pipes A and B of different diameters are connected, with a bendable connection structure, and Figure 12 shows the case where pipes CSC of the same diameter are butted together. When the tubes of the present invention are used inside both open ends of a short connecting pipe, Fig. 13 shows a case where one of the same diameter pipes C1C is squeezed and the other is crowned, so that the outer diameter is straight. shows the usage configuration.

Although the tube of the present invention is only shown as a pipe joint, it can also be used to connect a container body and a lid, or to connect container bodies to each other and a lid, for example, to connect capsules to each other when transporting capsules. Needless to say.

As described above, since the hollow ring tube having an annular cross section is prevented from elongating in the circumferential direction of the ring, the hollow ring tube will not roll even if an axial force is applied to the pipe joint portion. That is, when a hollow ring tube rolls due to the action of an axial force, it means that the inner circumference of the tube extends to the outer circumference.
This is prevented by a material that does not stretch or is difficult to stretch, so the tube remains in place without rolling,
The fluid pressure supplied into the hollow space maintains liquid tightness between the outer peripheral surface of one pipe and the inner peripheral surface of the other pipe to be connected.

In addition, when the internal pressure of the tube is high or lower than the outer circumferential pressure, it is preferable to use the tube with a diagonal collar or sloped wall to prevent the tube from being pushed out, so that the tube is compressed in a wedge-like manner. .

As described above, the tube of the present invention has 7
Even without complex configurations such as flanges and bolts, the supplied fluid filling pressure allows the pipes to be reliably and firmly connected to each other, and the hollow ring tube adapts to slight deformation of the hollow ring tube without rolling against axial force. It has the effect of resisting without losing its liquid tightness and preventing the connection from coming off.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of a hollow ring tube according to the present invention, Figs. 2 to 10 show cross-sectional shapes of the hollow ring tube of other embodiments, and Figs. 11 to 13 show This is an example of usage status. 1-・Tube body 2・Campus 3・-・
Supply port 5: Wire patent applicant Eio Mochizuki, agent Patent attorney Iwaodo Sugimoto Patent attorney Katsunori Sugimoto

Claims (4)

[Claims] (1) A hollow ring tube for use as a pipe joint and seal, which is a hollow ring tube having an annular cross-section, and is partially or entirely made of a material that does not stretch in the circumferential direction of the ring or is difficult to work with. (2) The hollow ring tube for pipe joint and seal according to claim 1, wherein the material that is difficult to stretch or does not stretch is on either the inner diameter or the outer diameter of the hollow ring tube. (3) A hollow ring tube for a pipe joint and seal according to claim 1, wherein the material that is difficult to stretch or does not stretch is used on both the inner diameter and outer diameter of the hollow ring tube. (4) A hollow ring tube for pipe sifting and sealing according to claim 1, wherein the hollow ring tube has a fluid filling port.