JP2006022553A - Slip-out preventing structure for insert rubber ring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rubber ring prevented from slipping out by reinforcing a mounting structure of the rubber ring inserted and circumferentially fitted simultaneously with the manufacture of a culvert. <P>SOLUTION: In the rubber ring 2 inserted and circumferentially fitted to expose a main part to the male end outer surface or a female end inner surface of a concrete culvert 1, an inserted and circumferentially fitted base part which bites into a concrete layer is formed into thick lump shape sized to be almost the same as or larger than the main part, and when pressed into a fitting clearance in the concrete culvert 1, the inserted and circumferentially fitted base part is moved upward from the front edge by the backward falling pressure of a pleated part in the outer half of the main part and prevented from slipping out of the concrete layer. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure for preventing an insert rubber ring from slipping out, and more specifically, in a rubber ring that is inserted around the insert so that the main part is exposed on the outer surface of the male end or the inner surface of the female end of the concrete culvert. The present invention relates to a structure in which the insert peripheral base is prevented from moving up and coming out due to the reverse pressure of the outer half of the main portion when it is press-fitted inside.

Conventionally, as shown in FIG. 13 (a), a shallow groove 1d is provided around the outer surface of the male end 1a of the concrete culvert 1, and the rubber ring 2 is fitted later on, or a thin rubber pedestal is inserted. A rubber ring has been bonded to the surface of the rubber pedestal (see Japanese Patent Application Laid-Open No. 2004-60295).
See JP 2004-60295 A

  However, when the concrete culvert is connected, when it is press-fitted into the fitting gap between the male and female ends, as shown in FIG. There is a problem that the rubber ring 2 is peeled off from the front end, floats and moves, twists, tears, and the like, causing water leakage.

  In the present invention, the insert peripheral base that bites into the concrete layer of the rubber ring is formed in the shape of a thick nodule that is almost the same size as or slightly larger than the main part of the outer half, and the front and rear ends of the base part Protrusions with two or more front and rear paragraphs are provided on the front and back of the surrounding concrete, or staples for preventing pull-out are placed at regular intervals to connect the concrete culvert between the male and female ends. When the rubber ring is press-fitted into the fitting gap, the insert base portion moves upward from the front end due to the reverse pressure of the pleat portion of the outer half of the main portion, and is lifted away to prevent it from coming out of the concrete layer. The problem has been solved.

  In the present invention, the insert ring base portion of the rubber ring is formed as a part thick nodule having a shape substantially the same as or larger than the main part as described above, so that the rubber ring is inserted in the fitting gap between the concrete culverts. Even when a large rear pressure is applied to the outer half pleat portion of the main portion when press-fitting, there is an effect that the insert peripheral base is prevented from coming off due to peeling and floating.

  The front end or front and rear ends of the rubber ring insert circumferential base is provided with a laterally inverted V-shaped cut groove that engages with the surrounding concrete, the above-mentioned protrusion, the bottom of the paragraph, etc., or at a certain interval in the base. Insert the endless wire into the front side of the base or insert the endless wire in the front side of the base, or insert the interrupted wire so that the bottom end side of the metal collar plate is brought forward in front of the wire. As a result, it is possible to further enhance the prevention of the insert peripheral base from coming off.

  The present invention relates to a rubber ring that is inserted around the outer surface of the male end or the inner surface of the female end of a concrete culvert so that the main part is exposed, and the insert peripheral base of the rubber ring is the same shape or more than the main part. In addition, the base portion is provided with uneven portions that mesh with the surrounding concrete at the front and rear ends of the base portion, stainless steel staples are fitted at regular intervals, and the rubber ring is placed between the concrete culverts. The base portion is prevented from being pulled out by the back pressure at the outer half of the main portion when it is press-fitted into the fitting gap.

  FIG. 1 shows a state in which the main portion 2b is exposed on the outer surface of the male end 1a of the culvert 1 and the rubber ring 2 is inserted around the insert simultaneously with the molding of the concrete culvert 1. The insert peripheral base 2a is substantially the same as or slightly larger than the main part 2b, and is provided with side-inverted V-shaped cut grooves 2c and 2d in the middle of the front and rear ends so that the surrounding concrete is engaged. Yes. Accordingly, as shown in FIGS. 2 (a) and 2 (b), when the rubber ring 2 is press-fitted into the fitting gap 1c between the female end 1b and the male end 1a of the concrete culvert 1, the outer half of the main portion 2b is folded. Although the portion 2e is moved backward and pressure is applied to the base portion 2a, the base portion 2a has a thicker nodule shape that is at least as large as the main portion 2b, and the concrete is packed by the V-shaped cut grooves 2c and 2d. By preventing the deformation, the slipping out is surely prevented, and the water sealing is continued in a predetermined press-fitted state as shown in FIG. 2 (b).

  3 and 4 show the stainless steel staples 3 for cross-fitting to the base portion 2a with a certain distance therebetween for preventing slipping out. By further preventing the deformation of the base portion 2a by the strong holding force of the stainless steel staple 3 by the concrete and the fitting of the staple 3, it is possible to further improve the pull-out prevention force.

  FIG. 5 shows another example of formation of the insert peripheral base 2a. (A) shows an inverted V-shaped cut groove 2c provided only on the front end side of the base 2a. (B) shows the front and rear ends of the base 2a. This shows an example in which a plurality of rows of small inverted V-shaped cut grooves 2c and 2d are provided on the side.

  FIG. 6 shows another example of formation, and (a) and (b) prevent the deformation by making the front end side of the base portion 2a deep and long to prevent deformation and increase the friction with the concrete to prevent peeling and lifting. It is a thing.

  7A and 7B show another example of formation, in which FIG. 7A is a view in which the protruding portion 2f described above is provided at the front end of the bottom and meshed with the concrete on the protruding portion 2f, and FIG. The example which provided the paragraph bottoms 2g and 2h in the lower end is shown.

  FIGS. 8A to 8D show examples of rubber rings 2 of various other shapes in which stainless staples 3 spaced apart from each other are transversely fitted.

  FIG. 9 shows an example in which an endless wire 4 is passed through the front end of the base 2a of the rubber ring, and the restraining force of the wire 4 prevents the rubber ring base 2a from floating and moving upward. . The endless wire 4 is integrally inserted when the rubber ring 2 is molded. As shown in FIGS. 10 (a) and 10 (b), a cut groove 5 having a bottom from the upper surface of the rubber ring 2 is provided. The endless wire 4 may be fitted into the groove 5 later.

  In FIG. 11, instead of inserting the endless wire 4, an interrupted wire 4 a and a metal collar plate 6 divided into a large number of sheets are placed in parallel in the front side of the wire 4 a, and then moved back to the outer half fold 2 e of the main part 2 b. An example is shown in which when the pressure is applied, the bottom end side of the metal collar plate 6 is moved forward with the wire 4 at the center, and the base portion 2a is strongly pressed against the inner surface of the concrete groove to prevent slipping out. .

  FIG. 12 shows an example in which the rubber ring 2 is inserted around the inner surface of the female end 1b of the concrete culvert 1, and the operation is the same as that when the rubber ring 2 is attached to the outer surface of the male end.

  INDUSTRIAL APPLICABILITY The present invention can be widely used for concrete circular culverts, box culverts, arched culverts, etc., and press fits into the fitting gaps between the culverts while taking advantage of the manufacturing efficiency of rubber ring insert mounting. It is possible to expect stable water sealing by reliably preventing the rubber ring from coming off and deforming.

Partial sectional view showing a first embodiment in which an insert rubber ring is inserted around the outer surface of the male end of a concrete culvert. (A) (b) is sectional drawing which shows the state press-fitted in the fitting gap between concrete culverts Sectional drawing showing an example in which stainless steel staples are cross-fitted at regular intervals to the base of a rubber ring Same perspective view of rubber ring Partial sectional view showing another example of forming the base of the rubber ring Partial sectional view showing another example of forming the base of the rubber ring FIG. 4 is a partial sectional view showing another example of forming the base of the rubber ring. Partial sectional view showing another example of cross-fitting stainless steel staples Partial sectional view showing an example in which an endless wire is inserted and provided on the front end side of the base of the rubber ring (A) (b) is a partial sectional view showing an example in which an endless wire is fitted in a bottomed cut groove In the example where the intermittent wire and the metal collar plate are provided in the base of the rubber ring, (b) is an explanatory view showing the action of the metal collar plate during press-fitting. Partial sectional view showing an example in which a rubber ring is inserted around the inner surface of the female end of the culvert Conventional example

Explanation of symbols

1 is a concrete culvert 1a is a male end 1b is a female end 1c is a fitting gap 1d is a shallow groove 2 is a rubber ring 2a is a base 2c, 2d is an inverted V-shaped cut groove 2e is an outer half fold 2f is a protrusion 2g , 2f is a paragraph bottom 3 is a stainless steel staple 4 is an endless wire 4a is an intermittent wire 5 is a cut groove 6 is a metal collar plate

Claims (8)

  In a rubber ring that surrounds the insert so that the main part is exposed on the male end outer surface or female end inner surface of the concrete culvert, the insert peripheral base that bites into the concrete layer of the rubber ring is approximately the same size as the main part. Alternatively, when the rubber ring is press-fitted into the fitting gap between the concrete culverts, the insert peripheral base is at the front end due to the reverse pressure of the outer half of the fold when the rubber ring is pressed into the fitting gap between the concrete culverts. A structure for preventing the rubber ring from slipping out, which prevents the slipping out of the concrete layer by moving up from the inside.   2. The structure for preventing an insert rubber ring from slipping out according to claim 1, wherein an uneven meshing portion that meshes with surrounding concrete is provided at the front end or the front and rear ends of the insert base portion.   2. The structure for preventing an insert rubber ring from slipping out according to claim 1, wherein the base part of the rubber ring is inserted with the front end side longer than the rear end side.   2. The structure for preventing an insert rubber ring from slipping out according to claim 1, wherein two bottoms are provided at the front and back of the bottom surface of the insert peripheral base of the rubber ring.   The structure for preventing withdrawal of an insert rubber ring according to any one of claims 1 to 4, wherein staples for preventing withdrawal are transversely fitted at a predetermined interval to an insert circumferential attachment base portion of the rubber ring.   Insert rubber ring pull-out prevention structure that allows an endless wire to penetrate the front part of the rubber ring insert base.   7. The structure according to claim 6, wherein a cut groove having a bottom from the upper surface is provided on the front side of the insert peripheral base of the rubber ring, and the endless wire is fitted and tightened.   Insert an interrupted wire into the front part of the rubber ring insert base, insert a metal collar plate divided into multiple pieces in front of the wire, and place the bottom end of the metal collar plate outside the main part. A structure for preventing the insert rubber ring from slipping out by preventing the base from coming out by causing the wires to move forward in the center by the reverse pressure of the half pleats.

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