JP3947552B1 - Cap for preventing rainwater intrusion in support hole - Google Patents

Abstract

[PROBLEMS] To easily attach to a pillar hole on the side of a hollow pillar drilled for filling material during repair of the hollow pillar, and to prevent falling off and prevent rainwater from entering from the outside. To provide a cap for preventing rainwater from entering the hollow strut without causing moisture.
The cap C for preventing rainwater intrusion is a longitudinal section that abuts on the periphery of the column hole except for the column hole and the column hole directly below, and extends so that its lower edge 2 is positioned below the lower end of the column hole. The surface-inverted U-shaped vertical plate portion 1, the flange portion 4 extending forward so as to form a downwardly open surface from the outer periphery excluding the lower end edge of the vertical plate portion, and the vertical cross-section of the vertical plate portion are inverted U-shaped. A hollow body portion 5 that fits into a column hole that extends rearward from above the inner edge and is open at the bottom and provided with a protrusion preventing protrusion around the inner edge.
[Selection] Figure 4

Description

  TECHNICAL FIELD The present invention relates to a rainwater intrusion prevention cap in a strut hole perforated on a side surface of a hollow strut in order to inject a filler at the time of strut repair in a hollow strut such as a handrail.

  The metal hollow struts erected on the concrete slab with balcony handrails, etc., have been used for many years and rainwater is gradually stored at the bottom of the hollow struts. Eventually, it will cause breakage of the struts, or the stored water will swell by rusting the anchor rebar, and the concrete may burst, leading to a serious accident. In order to prevent such a failure due to the internal water stored in the hollow column, a method has been developed in which the hollow column is drilled, the stored water is sucked and discharged from the hole, and a thermosetting synthetic resin is injected from the hole. (For example, refer to Patent Document 1).

  Patent Document 1 describes that after these filling operations, the holes of the columns are sealed or opened. In the sealed state, the intrusion of rainwater inside is temporarily prevented, but there is a possibility that rainwater may be stored after many years of use. Moreover, if it is in an open state, there is a drawback that rainwater is immersed directly into the inside through a hole. Therefore, providing a means for preventing rainwater from entering through the hole from the outside while maintaining communication with the inside of the hollow column is considered as one solution. On the other hand, a technique of attaching a separate drainage device to the base of the column when the hollow column is newly installed and performing internal drainage has been conventionally known (for example, see Patent Document 2). However, in this example, the drainage device is screwed into a joint fitting separate from the support and is embedded by mortar, and has a complicated structure including first and second waterstop plates. Therefore, it is difficult to apply such a technique to a column hole penetrating a side surface of a hollow column, which is drilled for filling material filling at the time of column repair, after the repair operation.

Japanese Patent No. 3743721 Japanese Utility Model Publication No. 4-16836

  The problem to be solved by the present invention is that, in a hollow column such as a handrail, it can be easily attached to a column hole penetrating the side surface of a hollow column drilled for filling material injection during column repair. Another object of the present invention is to provide a cap for preventing rainwater intrusion in a column hole that prevents rainwater from entering from the outside and does not cause moisture to enter the hollow column.

  In order to solve the above-mentioned problem, in the rainwater infiltration prevention cap in the column hole of the present invention, the drainage column hole located on the upper surface of the internal injection filling material that penetrates the side surface of the hollow column and is filled for column repair. In the rainwater invasion preventing cap made of elastic material to be attached, the lower end edge is positioned below the lower end of the support hole while abutting around the support hole and the side surface of the support hole except for the position immediately below the support hole when installed. A vertical U-shaped vertical plate portion extending in a vertical direction, a flange portion extending forward from the outer periphery excluding the lower edge of the vertical plate portion so as to form a downward open surface, and a vertical cross section of the vertical plate portion It has a hollow body portion that fits into the column hole that extends backward from the upper side of the inner edge that forms an inverted U shape and that is open downward and has a protrusion preventing edge around it.

The present invention has the following effects.
A. The rainwater intrusion prevention cap can be easily and quickly attached by simply inserting the fitting hollow body provided with the anti-extraction protrusion edge into the support hole, and is prevented from falling off.
B. Since the inside of the column communicates with the outside air, moisture does not spill.
C. The rainwater infiltration prevention cap extends forward so as to form a downward open surface from the outer periphery excluding the lower end edge of the vertical plate portion that is extended so that its lower end edge is located below the lower end of the column hole when installed. Since it has a part, it does not reach the pillar hole by repelling rainwater from above, and does not flood the inside of the pillar. The strut hole is located on the upper surface of the internal injection filler filled for strut repair, and the vertical plate part, the buttock part, and the fitting hollow body part of the cap for preventing rainwater intrusion are all opened at the bottom. Since the lower end of this is exposed to the outside, the rainwater that has entered the column through the column hole by accidentally blowing up is eventually discharged to the outside and does not stay in the column.

D. The hollow body portion to be fitted extends backward from above the inner edge of the vertical plate portion which has an inverted U-shaped longitudinal section, and has an inverted U-shaped longitudinal section, and the lower edges thereof are opened and both lower edges In the aspect in which the downward inclined edge and the upward inclined edge are continuously formed from the base of the vertical plate portion to the rear end, it is easily and quickly attached by simply inserting the hollow body portion to be fitted into the support hole. be able to. And the mountain-shaped protruding edge formed by the downwardly inclined edge and the upwardly inclined edge at both lower edges of the inserted fitting hollow body portion has an effect of preventing the rainwater intrusion prevention cap from being pulled out. Furthermore, when the hook-shaped ridge is formed in the outer surface circumferential direction of the fitting hollow body part, the waterproofing and the anti-extraction action are promoted. Further, the downward inclined surface presses the edge of the column hole due to the outward expansion by the elasticity of the lower portion of the inserted hollow body to be fitted, thereby generating a stress that causes the vertical plate portion of the rainwater ingress prevention cap to closely contact the column side. Therefore, no gap is generated between the support column and the vertical plate portion.
E. In addition, in the case where a concave groove along the peripheral edge is formed on the rear surface of the vertical plate portion so as to form a rearward peripheral protrusion that abuts on the side surface of the column, the stress to be in close contact with the side surface of the column is applied to the rearward peripheral protrusion. Since it can add intensively, the adhesiveness of a support | pillar and a vertical board part can be improved. Further, if necessary, an adhesive may be provided on the groove to bond the support column and the vertical plate portion.

  The invention of the present application is a rainwater infiltration prevention cap made of an elastic material that penetrates the side surface of the hollow support column and is attached to the drainage support hole located on the upper surface of the internal injection filler filled for support repair. A vertical U-shaped vertical plate section that contacts the periphery of the side surface of the column hole except for the column hole and directly below the column hole and extends so that the lower edge thereof is located below the lower end of the column hole; A flange that extends forward so as to form a downward open surface from the outer periphery excluding the lower edge of the vertical plate portion, and a lower portion that extends backward from the inner edge that forms a reverse U-shaped longitudinal section of the vertical plate portion. It is characterized by comprising a hollow body portion that is open and fitted to the column hole provided with a protrusion preventing protrusion at the periphery.

  Further, as a more specific aspect, the invention of the present application is to prevent rainwater intrusion made of an elastic material that penetrates the side surface of the hollow column and is attached to the drainage column hole located on the upper surface of the internal injection filler filled for column repair. In the cap for mounting, the vertical cross section is inverted U-shaped so that the lower end edge of the cap is in contact with the periphery of the side of the column hole except for the column hole and directly below the column hole and is extended below the lower end of the column hole. A vertical plate portion, a collar portion extending forward to form a downward open surface from the outer periphery excluding the lower edge of the vertical plate portion, and a rearward direction from above the inner edge forming a reverse U-shaped vertical section of the vertical plate portion And has an inverted U-shaped vertical cross section so that the lower edges thereof are open, and the lower edges have a downward inclined edge and an upward inclined edge from the base to the rear end of the vertical plate portion. A fitting hollow body formed continuously. And wherein the door.

  And in order to promote waterproofing and an anti-extraction action, the outer surface of the fitting hollow body having an inverted U-shaped longitudinal section is formed with a hook-like ridge in the circumferential direction. In addition, in order to improve the adhesion between the column and the vertical plate part, or to provide a place for accommodating the adhesive, the rear surface of the vertical plate unit is formed with a rearward circumferential protrusion that contacts the side surface of the column. It is characterized in that a concave groove extending along it is provided.

  Embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 3 show a use state of the rainwater ingress prevention cap C according to the present invention. In order to repair the hollow strut P embedded in the base portion of the concrete slab S (including the parapet), a hole having a predetermined diameter, that is, a strut hole H is drilled on the side of the strut P, and a suction pump is passed through the strut hole H. The water stored in the column P is discharged. Next, as shown in FIG. 3, an internal injection filler F such as a thermosetting resin is filled through the support hole H. The highest position where the filler F is filled is a position where the upper surface of the filler F reaches the lower end of the support hole H. The vertical plate portion of the column P that has become brittle as the filler F hardens is reinforced. The rainwater intrusion prevention cap C according to the present invention is attached to such a drainage column hole H. FIG. 1 shows a state before installation, and FIG. 2 shows a state after installation. ing.

  The rainwater intrusion prevention cap C is integrally manufactured by molding an elastic synthetic resin, synthetic rubber or the like. In one embodiment of the rainwater intrusion prevention cap C, as clearly shown in FIGS. 4 to 10, when it is attached to the column hole H, the periphery of the side surface of the column hole H except for the column hole H and the column hole H directly below it. And the lower end edge 2 of the vertical plate portion 1 extending below the lower end of the column hole H, and an open surface facing downward from the outer periphery excluding the lower end edge 2 of the vertical plate portion 1. 3 extending forward so as to form 3, and the vertical plate portion 1 extending backward from above the inner edge of the inverted U-shaped longitudinal section and having both inverted U-shaped longitudinal sections and both lower edges thereof 6 and 6 are open and the lower hollow edges 6 and 6 are continuously formed with a downwardly inclined edge 7 and an upwardly inclined edge 8 from the base of the vertical plate portion 1 to the rear end thereof. Part 5. And in this Example, the hook-shaped protrusion 9 is formed in the outer surface of the fitting hollow trunk | drum 5 which has a reverse U-shaped longitudinal cross section in the circumferential direction, and the vertical board part 1 rear surface is on the side of the column P. A concave groove 11 along the peripheral edge is formed so as to form a rearward circumferential protrusion 10 that abuts.

  By providing the above-described structure, the rainwater permeation preventing cap C has the function of preventing the rainwater permeation preventing cap C from being formed by the angled ridge formed by the downward inclined edge 7 and the upward inclined edge 8 of the fitting hollow body 5. The hollow body portion 5 to be fitted provided as an anti-extraction protruding edge that exhibits the above is easily and quickly mounted simply by inserting from the outside into the column hole H of the column P filled with the filler F for repair. Can do. The attached rainwater infiltration prevention cap C has an open surface 3 facing downward from the outer periphery excluding the lower end edge 2 of the vertical plate portion 1 which is extended so that the lower end edge 2 is positioned below the lower end of the column hole H at the time of installation. Since it has the collar part 4 extended forward so that it may form, it does not reach the support | pillar hole H by repelling rain water from upper direction, and it does not make it immersed in the inside of a support | pillar. Further, the lower end of the support hole H is positioned on the upper surface of the filled internal injection filler F, and the vertical plate portion 1, the flange portion 4 and the fitting hollow body portion 5 of the rainwater infiltration prevention cap C are all opened at the bottom. Since the lower end of the column hole H is exposed to the outside, the rainwater that has entered the column P through the column hole H due to the wind that is accidentally blown out is eventually discharged to the outside and does not stay in the column P. . And since the inside of support | pillar P is always connected with external air, moisture does not go up.

  In the above-described embodiment, the angle protrusion formed by the downwardly inclined edge 7 and the upwardly inclined edge 8 of the fitting hollow body 5 inserted as described above has an anti-extraction protrusion that prevents the rainwater ingress prevention cap C from being extracted. Although it becomes an edge, since the hook-shaped protrusion 9 is further formed in the outer surface circumferential direction of the fitting hollow body portion 5, it is possible to promote waterproofing and an anti-extraction action. However, as shown in FIGS. 11 and 12, there is an embodiment in which the hook-shaped ridges 9 do not exist in the outer circumferential direction of the fitting hollow body portion 5. Then, as shown in FIG. 13, the downward inclined surface 7 presses the edge of the column hole H by the outward expansion by the elasticity of the lower portion of the inserted hollow body portion 5, so that the rainwater infiltration prevention cap C Since the stress which makes the vertical board part 1 contact | adhere to the support | pillar P side surface is produced | generated, a clearance gap is not produced between the support | pillar P and the vertical board part 1. FIG. Further, in the case where the downward inclined edge 7 and the upward inclined edge 8 are formed on the fitting hollow body portion 5, the peripheral edge is formed on the rear surface of the vertical plate portion 1 so as to form the rearward peripheral ridge 10 that contacts the side surface of the column P. In the aspect in which the concave groove strip 11 is provided, the stress to be in close contact with the side surface of the column P can be concentrated and applied to the rearward peripheral projection 10, so that the adhesion between the column P and the vertical plate portion 1 is further enhanced. be able to. If necessary, an adhesive may be provided on the groove 11 to bond the support column and the vertical plate portion. As described above, the fitting hollow body 5 in which the downward inclined edge 7 and the upward inclined edge 8 are continuously formed on the lower edges 6 and 6 has been described. It is also possible to adopt a mode in which continuous ridges extending in the circumferential direction are formed on the outer periphery of a hollow bar shape that is open.

It is a perspective view which shows the support | pillar with which the cap for rain water permeation prevention is mounted | worn. It is a perspective view which shows the support | pillar with which the rainwater permeation prevention cap was mounted | worn. It is a longitudinal cross-sectional view which shows the support | pillar with which the cap for rain water permeation prevention was mounted | worn. It is a perspective view of the cap for rainwater invasion prevention. It is a top view of the cap for rain water penetration prevention. It is a front view of the cap for rain water penetration prevention. It is a bottom view of the rainwater infiltration prevention cap. It is a side view of a cap for preventing rainwater intrusion. It is a rear view of a rainwater infiltration prevention cap. It is a longitudinal cross-sectional view of the cap for rainwater permeation prevention. It is a top view of the cap for preventing rainwater ingress according to another embodiment. It is a side view of the cap for rainwater infiltration prevention concerning other Examples. It is a longitudinal cross-sectional view of the support | pillar which shows the mounting state of the rainwater permeation prevention cap.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vertical plate part 2 Lower end edge 3 Downward opening surface 4 Eaves part 5 Fitting hollow body part 6 Lower edge 7 Downward inclined edge 8 Upward inclined edge 9 Hook-shaped ridge 10 Backward surrounding ridge 11 Groove groove C For prevention of rain water infiltration Cap P Post H Post hole F Filler

Claims (4)

  In a cap for preventing rainwater intrusion made of an elastic material that is attached to a drainage strut hole that penetrates the side surface of a hollow strut and is located on the upper surface of an internal injection filler filled for strut repair, A vertical U-shaped vertical plate section that contacts the periphery of the side surface of the column hole except directly below the column hole and extends so that its lower edge is positioned below the lower end of the column hole; A flange that extends forward so as to form a downwardly open surface from the outer periphery excluding the lower edge, and an inner edge that forms a reverse U-shaped longitudinal section of the vertical plate extends from the upper side to the rear, and the lower part is opened and surrounded. A cap for preventing rainwater intrusion in a strut hole, comprising: a hollow body portion to be fitted into the strut hole provided with a pull-out prevention protrusion.   In a cap for preventing rainwater intrusion made of an elastic material that is attached to a drainage strut hole that penetrates the side surface of a hollow strut and is located on the upper surface of an internal injection filler filled for strut repair, A vertical U-shaped vertical plate section that contacts the periphery of the side surface of the column hole except directly below the column hole and extends so that its lower edge is positioned below the lower end of the column hole; An eaves portion extending forward to form a downward open surface from the outer periphery excluding the lower edge, and an inverted U-shaped longitudinal section extending backward from above the inner edge forming the inverted U-shaped longitudinal section of the longitudinal plate portion. A hollow body to be fitted, which has a lower inclined edge and an upward inclined edge formed continuously from the base of the vertical plate portion to the rear end thereof. Intrusion prevention of rainwater in a support hole characterized by comprising Use cap.   3. A cap for preventing rainwater intrusion in a column hole according to claim 2, wherein a flange-like ridge is formed in the circumferential direction on an outer surface of the fitting hollow body.   The column hole according to claim 2 or 3, wherein a concave groove along a peripheral edge is provided on the rear surface of the vertical plate portion so as to form a rearward circumferential protrusion that contacts the side surface of the column. Cap for preventing rainwater intrusion.

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