JP3061584U - Rubber ring mounting structure for pipes with annular ribs - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention aims to provide a new rubber ring mounting structure for fitting an end of a pipe with an annular rib into a side hole of a manhole or a handhole. [Constitution] The present invention relates to a synthetic resin pipe with a plurality of large annular ribs formed in parallel at regular intervals inside a wide rubber ring which is fitted and fixed in a side hole of a manhole or a handhole. The end of the pipe with the annular rib is attached to the end of the rubber ring with two tightening bands which are wound around two adjacent end surfaces of the annular rib outside the rubber ring. A manhole mounting structure for a pipe with an annular rib, wherein the manhole is attached to the pipe.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a rubber ring mounting structure for fitting a pipe with an annular rib used for sewerage or optical fiber installation into a side hole of a manhole or a handhole.

[0002]

[Prior art]

 Japanese Unexamined Patent Publication No. 9-250658 filed by the applicant of the present application discloses an outer rubber ring to be inserted into a side hole of a manhole, and a bendable connection to the inner end of the outer rubber ring to fit into the side hole. A flexible watertight joint for manholes, comprising an inner rubber cylinder portion fitted externally to a running water pipe to be inserted and fastened by band tightening, is described.

[0003]

[Problems to be solved by the invention]

 However, in the above-mentioned publication, there is a problem that a pipe with an annular rib having a large number of large annular ribs arranged at regular intervals on the outer periphery cannot be stably fixed.

[0004]

[Means for Solving the Problems]

 The present invention is an end of a pipe with an annular rib formed by forming a large number of large annular ribs in parallel with a certain interval on the outer circumference made of synthetic resin inside a rubber ring that fits and fits into the side hole of the manhole or handhole. And the ends of the annular ribbed pipe are fastened to the rubber ring with two fastening bands that are wound around two adjacent end faces of the annular rib outside the rubber ring. In this way, they tried to solve these issues.

[0005]

[Embodiment of the invention]

 This will be described below with reference to the drawings.

A wide rubber ring 3 having an inverted V shape is fitted from the outside into a circular side hole 2 of a hand hole 1 having a quadrangular shape in a plan view, and the outer rubber portion 3 a of the rubber ring 3 is pressed. 4 is pressed tightly against the hole wall of the side hole 2 of the manhole, the end of the annular ribbed pipe 5 is fitted into the inner rubber portion 3b of the rubber ring 3 from the outside, and the end face of the pipe 5 is It is aligned with the inner end of the hole 2 or located near the inner end.

As shown in FIGS. 1 and 2, the annular ribbed pipe 5 has a large number of large-diameter large ribs 5a spaced at regular intervals around a cylindrical body made of a synthetic resin such as hard vinyl chloride. They are integrally molded in parallel. As shown in FIG. 4, there is a pipe 50 provided with a hollow rib 50a.

The inner rubber portion 3 b of the rubber ring 3 is formed by cutting an elastic receiving plate 6 having a width straddling the two ribs 5 a with a thin metal plate or the like, and winding the elastic receiving plate 6 on the outer surface of the elastic receiving plate 6. It is fixed by fastening with metal fastening bands 8a, 8b which have been spot welded 7a, 7b.

The fastening bands 8a, 8b are fastened to the two adjacent annular ribs 5a, 5a of the pipe 5 with the elastic receiving plate 6 and the inner rubber portion 3b interposed therebetween, at positions on the distal end surfaces thereof. . The fastening bands 8a and 8b are provided with a large number of stop holes 8c at the ends of the bands, and loosened by turning a worm gear 8d that bites the stop holes 8c. Reference numeral 9 denotes a protective ring fitted between the outer rubber portion 3a and the inner rubber portion 3b to prevent intrusion of earth and sand.

FIG. 5 shows a rubber ring 30 which is fitted into and fixed to the side hole 2a of the hand hole 1a having a circular shape in a plan view from the outside, so that the rubber ring 30 is fitted along the shape of the side hole 2a of the hand hole 1a. This is the same as the previous example except that the outer rubber portion 30a is formed by bending the outer rubber portion 30a into a shape curved in a plan view.

In addition to running water, a communication cable (not shown) such as an optical fiber is installed in the annular ribbed pipe 5 connected between the handhole or the manhole.

[0012]

[Effect of the invention]

 As described above, according to the present invention, a pipe with an annular rib inserted into a side hole of a handhole or a manhole with a wide rubber ring interposed therebetween is positioned on the end face of two annular ribs adjacent from the outside of the rubber ring. In order to prevent the intrusion and leakage, maintain the fixed mounting condition and prevent the ingress or leakage of water, even if fluctuations including ground subsidence occur due to the tightening and fixing by two tightening bands. The effect that can be done.

[0013] By winding the elastic receiving plate between the two tightening bands and the rubber ring, tightening is strengthened, and the effect of preventing the tightening band from shifting and stably maintaining the tightening state is produced.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing a mounting state of a hand hole, a rubber ring, and a pipe with an annular rib.

FIG. 2 is a partially enlarged sectional view of the same.

FIG. 3 is a perspective view of a tightening band and an elastic receiving plate.

FIG. 4 is a partially enlarged sectional view showing an example of a pipe having a hollow annular rib.

FIG. 5 is a cross-sectional view showing a circular rubber ring for a hand hole in a plan view.

[Explanation of symbols]

 1, 1a is a hand hole 2, 2a is a side hole 3, 30 is a rubber ring 3a, 30a is an outer rubber portion 3b is an inner rubber portion 4, a pressing ring 5, 50 is a pipe with an annular rib 5a, 50a is a rib 6 Is an elastic receiving plate 7a, 7b is spot welding 8a, 8b is a tightening band 8c is a stop hole 8d is a worm gear 9 is a protective ring

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Kazumasa Okayama 6-1-1-1 Heiwajima, Ota-ku, Tokyo Within Shinmei Sangyo Co., Ltd. (72) Hiroshi Enonami Nakajo Nitta, Nakanoshima-cho, Minami Kambara-gun, Niigata None) Inside Shinmei Sangyo Niigata Factory

Claims (2)

[Utility model registration claims] 1. A synthetic resin pipe with annular ribs formed by molding a large number of large annular ribs in parallel at predetermined intervals inside a wide rubber ring which is fitted and fixed in a side hole of a manhole or a handhole. The end of the pipe with the annular rib is attached to the rubber ring with two tightening bands which are fitted at the ends and wound around two adjacent end surfaces of the annular rib outside the rubber ring. A rubber ring attachment structure for an annular ribbed pipe, wherein the rubber ring is attached and fixed. 2. The structure according to claim 1, wherein a wide elastic receiving plate is wound and inserted between the rubber ring and the two tightening bands.