JP3089314U - Closure plug for concrete structure - Google Patents

Abstract

(57) [Problem] To provide an obstruction plug with high waterproof effect, which easily and surely closes a terminal trace hole remaining on a wall surface of a concrete structure. SOLUTION: Moisture is applied to an opening-side end of an obturator plug 1 having a substantially conical obturator plug 1 made of a mortar material or the like and a fixing holder 4 having a check piece 2 and a lid 3 partially embedded therein. An obturator plug 1 formed by bonding a water-swellable rubber plate 5 having a through hole 6 at least one size smaller than a separator B located in a terminal trace hole A at the center of a water-swellable rubber plate 5 that absorbs and expands. Is configured.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an obstruction plug having a high waterproof effect, which easily and surely closes a terminal trace hole left on a wall of a concrete structure.

[0002]

[Prior art]

 Conventionally, the separator used for forming the formwork is embedded in the concrete on the wall surface of the concrete structure, and the terminal trace holes attached to the separator are formed on the outer surface of the concrete from which the formwork is removed. In order to remain at the interval, it is common to finish this recess by closing it with a dedicated plug. There are the following techniques for the plug.

[0003] A technique proposed by the present applicant is Japanese Utility Model No. 3084256, which discloses a technique in which a bottom lid is attached to a cylindrical body having a plurality of check pieces inside a substantially conical obstruction stopper. This plug is a plug with a fixed holding tool embedded in it, and when the terminal trace hole is closed with this plug, the screw part of the separator located in the terminal hole and the stopper of the plug are checked. This is a technology of an obturator plug that can be closed reliably and accurately by using an adhesive waterproofing agent at the time of construction in addition to engaging the pieces.

[0004] As a waterproof plug, there is a technique disclosed in Japanese Utility Model Publication No. 2-47131. As shown in FIG. 7, the technique disclosed in Japanese Utility Model Publication No. 2-47131 has a small-diameter side end and an outer periphery of the obturator in which a screw hole is provided from the small-diameter end of a main body forming a substantially conical obturator. In addition, this is a closing device that combines an elastic cap made of a water-swellable polyurethane material with a U-shaped cross section.If this closing device is used to close the terminal trace hole, the separator end located in the terminal trace hole is used. By closing the screw hole of the closing part and the closing part, the closing part can close the terminal trace hole and obtain a waterproof effect.

[0005]

[Problems to be Solved by the Invention] There are the above-mentioned plugging plug technologies, and all plugging plugs provide a certain waterproofing effect as well as block the terminal trace hole. However, when viewed from the site where ease of handling during construction and a reliable waterproofing effect are expected, even the above-described technology has the following inconveniences and disadvantages. First, the technology of Japanese Utility Model No. 3084256 by the present applicant has a structure in which a fixing holder having a check piece provided in a substantially conical plug is embedded, so that the terminal at which the screw portion at the end of the separator is located. When closing the trace hole, the screw part of the separator engages with the check piece as the stopper plug is pushed in. On the other hand, at the time of construction, it is closed with an adhesive waterproofing agent in order to obtain waterproofness, but each time the adhesive waterproofing agent must be closed with an obstruction plug. There was trouble.

[0006] Furthermore, the closing device shown in Japanese Utility Model Publication No. 2-47131 has a water-swellable elastic rubber cap attached thereto. The closing device has a screw hole buried in the inside of the separator located at the terminal trace hole. To engage with the threaded part, it is not possible to simply insert it by pushing it in.Therefore, it is necessary to use a separate tool to turn the obturator while applying it to the tool engaging part provided on the outer surface of the main body of the obturator. Because of the inability to do so, it was an inconvenience and a drawback that was troublesome and troublesome.

[0007]

[Means for Solving the Problems]

 The present invention solves the inconveniences and drawbacks of the above-mentioned conventional plugs, and as a configuration thereof, a plug having a substantially conical plug with a fixing holder with a check piece embedded inside the opening side. Is formed, and the plug is provided with a water-expandable rubber covering the side from the open end or the end face of the plug. By configuring the obstruction plug as described above, when closing the terminal trace hole, it can be securely attached to the screw part of the separator by simply pushing it in, and it can be easily attached and closed. To provide an obturator.

[0008]

[Embodiment of the invention]

 The closure plug 1 according to the first embodiment of the present invention is a closure plug 1 in which a fixing holder 4 provided with a check piece 2 in an opening is embedded, and a through hole 6 is provided at an end on the opening hole side. Since it has a simple configuration with the water-expandable rubber plate 5 attached, when the terminal trace hole A is closed as shown in FIG. 2, the peripheral portion of the through hole 6 smaller than the separator B rod is bent inward. The stopper plug 1 has the waterproof effect of the water-expandable rubber plate 5 in combination with the simple mounting method because the screw portion of the separator B can be securely fixed by engaging with the check piece 2. Constitute.

The closure plug 1 in the second embodiment is attached to the water-swellable rubber cap 8 having a U-shaped cross section so as to integrally cover the opening end and the peripheral portion. On the other hand, the waterproofing effect of the water-swellable rubber can be enhanced also in the peripheral portion of the obstruction plug.

An obturator plug 1 according to a third embodiment is basically the same as the type of the second embodiment, except that a water-expandable rubber cap 8 is provided with two ring projections 9 on the outer periphery. Even if the inner surface of the terminal trace hole A is not uniform, the ring projection 9 is adapted to and adheres to the terminal hole A, so that the closure plug 1 having higher waterproofness than the second embodiment is formed.

[0011]

【Example】

 Embodiment 1 An obstruction plug according to Embodiment 1 of the present invention will be described with reference to a partially broken perspective view shown in FIG. 1 and cross-sectional views showing construction examples in FIGS. The closure plug 1 according to the first embodiment has a substantially conical closure plug 1 made of a mortar material or the like, and a fixing holder 4 having four check pieces 2 and a lid 3 semi-buried inside the closure plug 1. A water-swellable rubber plate 5 provided with a through hole 6 at the center of a water-swellable rubber plate 5 that absorbs moisture and expands at one end at least one side smaller than the separator B located at the terminal trace hole A at the opening side end. To form an occluding plug 1 made by bonding.

When closing the terminal trace hole A using the above-described plug 1, the plug 1 is pushed into the terminal trace A where the separator B is located as shown in FIGS. The through hole 6 of the rubber plate 5 is pushed inward, the screw portion of the separator B engages with the check piece 2 and is fixed, and the waterproof effect of the water-swellable rubber plate 5 is obtained.

Second Embodiment An obstruction plug according to a second embodiment will be described with reference to an exploded perspective view in which a part of the obstruction plug is shown in FIG. 4 and a cross-sectional view shown in FIG. The cross section of the water-swellable rubber attached to the closure plug 1 shown in this embodiment is U-shaped. First, the plug 1 is a plug 1 in which a fixing holder 4 having a check piece 2 and a lid 3 is buried in the same manner as in the first embodiment. A stepped peripheral portion 7 is formed, and a water-swellable rubber cap 8 with a through hole 6 that covers the stepped peripheral portion 7 and the end on the opening side is adhered to form the plug 1 of the second embodiment. I do.

Third Embodiment An obturator according to a third embodiment will be described with reference to a sectional view shown in FIG. The closure plug 1 of this embodiment is basically the same as that of the second embodiment, and is a closure plug 1 in which a fixing holder 4 having a check piece 2 and a lid 3 is embedded, and the outer periphery is also provided. A water-expandable rubber cap 8 having a through hole 6 attached to the step-peripheral portion 7 is provided with two shallow ring protrusions 9 on the outer periphery. A cap 8, which is adhered to the end part and the step peripheral part 7, constitutes the plug 1 of the third embodiment.

The plug 1 in the present invention has the above-described embodiments, but the thickness of the water-swellable rubber plate 5 and the water-swellable rubber cap 8 attached to the plug 1 is about 2 to 3 mm. However, it may be thicker. The number of the ring projections 9 applied to the water-swellable rubber cap 8 of the third embodiment is two, but any number of the ring projections may be larger or one, and neither is particularly limited.

[0016]

[Effect of the invention]

 Since the obturator according to the present invention has the above-described configuration, it provides the following advantages and effects as compared with the conventional art. First, the main body of the plug according to the present invention has a unique structure in which a fixing holder having a plurality of check pieces is buried therein. It is a plug with a water-swellable rubber plate or a water-swellable rubber cap that absorbs and expands.When closing the terminal trace hole with this plug at the time of construction, a separate The check piece engages with the threaded part of the separator just by pushing it in, without the need for tools, etc., so it is possible to securely close the terminal trace hole without being pushed back, thus improving work efficiency. Good.

Furthermore, since the water-swelling rubber is provided at the open end and outer periphery of the plug, the contact portion between the plug and the concrete and the separator obtains a waterproof effect by the expandable rubber. Reduce rust factor and concrete deterioration. In addition, it is not necessary or troublesome to apply a water-blocking adhesive at the time of construction. Further, the type shown in Example 3 has a ring projection on the periphery of the water-swellable rubber cap, so that even if the inner surface of the terminal trace hole is not uniform, it is easy to be familiar with, so that a more effective waterproofing effect can be obtained. Constitute an obturator plug that exhibits An obturator plug is provided that combines an effective water-swelling waterproof material with the functional locking mechanism as described above, so that even an unskilled person can close the terminal trace hole without reducing the work speed.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing an obturator according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a working example when the obstruction plug according to the first embodiment is attached.

FIG. 3 is a cross-sectional view showing a construction example in which the obstruction plug of the first embodiment is used.

FIG. 4 is an exploded cross-sectional view showing an obturator according to a second embodiment, with a part missing.

FIG. 5 is a sectional view showing an obturator according to a second embodiment.

FIG. 6 is a sectional view showing an obturator according to a third embodiment.

FIG. 7 is a cross-sectional view showing a conventional obturator technique.

[Explanation of symbols]

 1 ······························································· Water-expandable rubber plate 6. ···· Through hole 7 ···· Step peripheral portion 8. ···· Water-expandable rubber cap 9.・ Ring protrusion A ・ ・ Terminal trace hole B ・ ・ Separator

Claims (3)

[Utility model registration claims] 1. A water-swellable rubber with a through hole at an opening end of an obturating plug having a substantially conical obturating plug having a fixing holder having a check piece and a lid embedded in a small-diameter opening thereof. An obstruction plug for a concrete structure characterized by comprising a plate attached thereto. 2. An obturator having a substantially conical obturator plug and a fixing holder having a check piece and a lid embedded in a smaller-diameter opening of the obturator plug. A closure plug for a concrete structure, characterized in that the closure plug thus formed is formed, and a water-swellable rubber cap with a through hole is attached so as to integrally cover the opening-side end of the closure plug and the step peripheral portion. 3. The water-swellable rubber cap attached to the obturator plug has a configuration in which a ring projection is provided on an outer peripheral portion.
An obturator according to any one of the preceding claims.