JP2569573Y2 - Structure of rubber ring for joint between side hole of manhole and sewer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber ring which is press-fitted between a lateral hole of a manhole and a sewer inserted into the lateral hole to seal with water.

[0002]

2. Description of the Related Art As this kind of rubber ring, there is Japanese Utility Model Registration Application No. 67671 proposed by the present applicant. The actual application has a large diameter portion and a small diameter portion, and the large and small diameter portions are connected by an integral connecting material to leave a U-shaped gap between the large and small diameter portions. A rubber ring is formed by embedding hardness rubber and protruding a collar ring at one end of the outer surface of the large diameter portion. The rubber ring includes an eccentricity between a lateral hole of a manhole and a sewer fitted into the lateral hole. A joint structure between a lateral hole of a manhole and a sewer is characterized in that the U-shaped gap is press-fitted into the ring-shaped gap while widening and narrowing the gap, and after the press-fitting, the U-shaped gap is filled with an elastic sealing material.

[0003]

However, in the actual application, high-hard rubber is embedded inside the large-diameter portion (the outer portion referred to in the present application) so that the outer portion has tension.
The embedding of high-hardness rubber still lacked tension, and when interposed between the side hole of the manhole and the sewer, there was a problem that it remained in a planar contact surface and also partially deformed or distorted, resulting in water leakage. .

[0004]

According to the present invention, a horizontally long inner piece and an outer piece are integrally connected to each other with a connecting member therebetween,
A water-expandable rubber or a soft rubber layer is provided on the outer surfaces of the inner and outer pieces, and a ridge is formed on one outer surface of the outer piece to form a tapered inclined surface on the other outer surface. Then, in a rubber ring formed in an inverted U-shape in cross section, a metal ring having a plurality of curved surfaces bulging outward is embedded in an intermediate portion of the outer piece to solve such a problem. Things.

[0005]

An embodiment will be described below with reference to the drawings.

A horizontally long inner piece 2 and an outer piece 3 are integrally connected to each other with a connecting member 1 bent in an arc shape therebetween.
A water-swellable rubber layer or a flexible rubber layer 4, 5 is provided on the outer surface of the outer two pieces 2, 3, and a ridge 6 is provided on the base outer surface of the outer piece 3, and the tip outer surface is tapered. An inclined surface 7 is provided, and a metal ring 9 provided with a plurality of curved bulging portions 8 protruding outward at intervals along the entire length of the intermediate portion of the outer piece 3 is embedded, and the cross section is inverted U-shaped. A rubber ring 10 is formed.

[0007] The rubber ring 10 is externally fitted to the outer surface of the end of the sewer 11 so as to press the inner part 2 on the side thereof, and then is pressed into the lateral hole 13 of the manhole 12 together with the sewer 11 to complete the press-fitting. The ridge 6 is brought into contact with the outer surface of the manhole 12 with.

When the culvert 11 is eccentrically pressed into the lateral hole 13 of the manhole 12, each part of the ties 1 is bent into large and small according to the degree of eccentricity and smoothly press-fitted. ,
The outer part 3 is equally pressed against the inner surface 13a of the lateral hole 13. At this time, the metal ring 9 embedded in the outer piece 3
Of the outer part 3 against the inner surface 13a of the lateral hole 13 from the planar pressure contact with the circular swelling portion. The portion 8 is further strongly pressed and strongly pressed in several lines.

Next, an elastic sealing material 15 is filled in the internal gap 14 of the rubber ring 10, and a cement mortar 16 is further filled around the inside to complete the process.

[0010]

As described above, the present invention embeds a metal ring having a plurality of outwardly curved bulges in the middle of the outer piece as described above. One side of the outer part is pressed against the side hole of the manhole with several lines by pressing the shaped tension and each curved bulging part, so it is ensured that water leaks from between the side hole of the manhole and the outer part This has the effect of eliminating.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional plan view illustrating a joint structure using a joint rubber ring of the present invention.

FIG. 2 is a partially enlarged side view showing the operation of a circular bulging portion of the metal ring.

3A is a cross-sectional plan view of a rubber ring, and FIG. 3B is a partially enlarged end view of the same.

FIG. 4 is a cross-sectional plan view showing an example of an eccentric fitting of a sewer.

[Explanation of symbols]

 1 is a connecting material 2 is an inner piece 3 is an outer piece 4, 5 is a water-expandable rubber or soft rubber layer 6 is a ridge 7 is a tapered inclined surface 8 is a curved bulging part 9 is a metal ring 10 Rubber ring 11 is sewer 12 is manhole 13 is lateral hole 13a is inner surface 14 is internal gap 15 is elastic seal material 16 is cement mortar

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiromichi Sukami 3-50-5 Kameari, Katsushika-ku, Tokyo Shintok Industries Co., Ltd. (72) Inventor Hoshikawa ▲ Tokyo ▼ Fu 6-1, Heiwajima, Ota-ku, Tokyo No. 1 Inside Shinmei Sangyo Co., Ltd. (56) References Japanese Utility Model 5-14240 (JP, U) Japanese Utility Model 4-117043 (JP, U) Japanese Utility Model 63-95792 (JP, U) Japanese Utility Model 5-57035 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] A laterally elongated inner part and an outer part are integrally connected to each other with a connecting member interposed therebetween, and a water-expandable rubber layer or a flexible rubber layer is formed on the outer surfaces of the inner part and the outer part. A rubber ring having a cross section formed in an inverted U-shape by forming a ridge protruding on one outer surface of the outer piece and providing a tapered inclined surface on the outer surface on the other side. A structure of a rubber ring for a joint between a lateral hole of a manhole and a sewer, wherein a metal ring having a plurality of curved surfaces bulging outwardly is embedded in the structure.