JPH11270134A - Veranda supporting reinforcement anchor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a veranda supporting reinforcement anchor scarcely having a bolt protruded out even if the thickness of the concrete is thin, the screw hardly becoming loose, and adaptable to any kind of a screw as long as the nominal diameter is the same. SOLUTION: When a vertical wall and a horizontal slab composing a veranda are to be simultaneously concreted, the position of a vertical form for forming the vertical wall is adjusted by a veranda having the base end secured to a horizontal reinforcement 20 of the horizontal slab. In this case, an U bolt 1 is screwed into the end of drawn pipes 17 fitted to the base end of a support body adjustable of its length and both ends of a hold-down plate for tightening the horizontal reinforcement 20 of the horizontal slab are fitted to male screws 2, 3 of both shafts of the U bolt 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rebar anchor serving as a fulcrum of a support for supporting a veranda formwork in a formwork of a lateral wall for a veranda such as an apartment building at a rebar construction site.

[0002]

2. Description of the Related Art Conventionally, when a concrete veranda is constructed, a concrete panel plate 10 on the floor surface and a concrete panel plate 11 on the vertical surface are first assembled as shown in FIG. After assembling at a predetermined distance from the vertical concrete panel board 11, the base metal 13 is bolted to the floor concrete panel board 10 in order to adjust the verticality according to the surface of the veranda formwork 12. Fix with a nut or wood screw, etc., assemble the support consisting of the support main body 15, the single pipe 16 and the punched pipe 17 between the thick end member 14 of the veranda formwork 12 and the base hardware 13, and adjust the veranda formwork 12, Slab 1
8 and the concrete of the vertical wall 19 were cast.

However, in this method, the support is attached to the concrete panel plate 13 while the reinforcing bars run vertically and horizontally, because it takes time and effort to form a hole in the concrete panel plate 13 or the like. It is. Moreover, hardware is expensive.

[0004] Therefore, as shown in FIG. 4, there is a case where a base metal is used in which a hook portion 21 is hooked on a reinforcing bar 20 for reinforcing a slab and fastened with a double screw bolt 22. This base metal had the advantage of being cheap.

[0005]

However, the disadvantages of the double-screw base metal fitting shown in FIG. 4 are that the double-screw bolt 22 is used, which requires (a) a wrench for rotating both screws, and the like. Although the bolt cannot be used unless it is long enough,
If the concrete thickness is reduced, the bolts will protrude and cannot be used, or the protruding bolts must be cut, which is troublesome.

(A) Since the rebar 20 is simply pressed from above with the two screw bolts 22, the screws are loosened when the vibrator is used at the time of placing concrete, and the hooks 21 come off.
May not be supported.

(C) There are approximately three types of female screws at the end of the pipe 17 in the mold industry, and it is necessary to use two types of male screws for each dedicated male screw. However, pipes may be mixed in various places depending on the site. Is inconvenient.

The problem to be solved by the present invention is that even if the concrete thickness is small, the bolts are unlikely to pop out, the screws are not loosened, and any veranda having the same nominal diameter can be used. An object of the present invention is to provide a reinforcing bar anchor for support.

[0009]

In order to solve the above-mentioned problems, a reinforcement anchor for veranda support of the present invention forms the vertical wall when a vertical wall and a horizontal slab constituting the veranda are simultaneously poured into concrete. A veranda support for fixing a vertical formwork to a horizontal bar of the horizontal slab with a veranda support having a proximal end fixed thereto, the tip of a punched pipe attached to a proximal end of a support body having an adjustable length. In addition, a U-bolt is screwed, and both ends of a holding plate for fastening a horizontal reinforcing bar of the horizontal slab are attached to male screw portions of both shaft portions of the U-bolt.

In the above-mentioned reinforcing bar anchor for veranda support, a hole is formed at one end of the holding plate so as to fit into one shaft of a U-bolt, and the other end of the holding plate is provided with a U-bolt. A U-shaped groove may be formed on the other shaft portion to be engaged from the side. Further, one of the male screw portions of the U-bolt may be a coarse thread and the other may be a special screw having a circular cross section.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to embodiments shown in the drawings.

FIGS. 1A and 1B show a first embodiment of the present invention, wherein FIG. 1A is a front view and FIG. 1B is a plan view of a holding plate. In the embodiment of FIG. 1, 1 is a U-bolt, 2 is a first male screw portion of the U-bolt 1, 3 is a second male screw portion, 4 is a holding plate, and 5 and 6 are fastening nuts. The holding plate 4 is formed with a round hole 4a for passing the first male screw 2 and a U groove 4b for fitting the second male screw 3 from the side. The first male screw portion 2 or the second male screw portion 3 is screwed with the tip of the punched pipe 17 shown in FIG.

The first male screw 2 is a wit-size coarse thread, and the second male screw 3 is a special screw having a circular cross section.

FIG. 2 shows a second embodiment of the present invention. The other U groove 4c of the holding plate 4 is formed along the longitudinal direction of the holding plate 4, and the nut is omitted. Other than that, it is the same as the first embodiment.

[0015]

According to the present invention, as shown in FIG. 1 or FIG.
Use of the U bolt 1 has the following effects.

(A) The portion to be embedded in the concrete only needs to be the thickness of the holding plate 4 and the tightening nuts 5 and 6. Even if the concrete thickness is quite thin, it can be easily dealt with by shortening the entire length of the U bolt 1. .

(A) Reinforcing bar 20 is connected to U
Since the nuts 5 and 6 at the locations are tightened, a springback-like force due to the tightening force of the holding plate 4 also acts, so that the nuts 5 and 6 are not easily loosened. Even if the nuts 5 and 6 are loosened, they will not fall out of the reinforcing bar 20.
Can be used as it is.

(C) Since one of the left and right external threads of the U-bolt 1 is a coarse thread and the other is a special thread having a circular cross section, three types of female threads for pipes used in the formwork industry, ie, wit size IB screws and RB screws. No matter where you are,
Since it can be used, its versatility is high and its stock is small, so that space and cost are saved.

(D) Further, since it is a U-bolt type, the strength is high and mass production is easy, so that the price is low.

(E) By forming one of the holding plates 4 as a round hole and the other as a notched U-groove 4b, the U bolt portion is passed through the reinforcing bar 20, and the holding plate 4 is turned to form the U-groove 4b.
To the tightening part of U bolt 1 and nuts 5, 6
Can be fixed by tightening, so installation is easy and fast.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention;
(A) is a front view, (b) is a top view of a holding plate.

FIG. 2 shows a second embodiment of the present invention;
(A) is a front view, (b) is its bottom view.

FIG. 3 is a cross-sectional view showing a construction example using a conventional veranda support and base hardware.

FIG. 4 is an enlarged view of a conventional reinforcing bar fastening tool.

[Explanation of symbols]

1 U bolt, 2 first male thread, 3 second male thread, 4 holding plate, 4a round hole, 4b, 4c U groove, 5,
6 fastening nuts, 10,11 concrete panel boards, 12 veranda formwork, 13 base hardware, 14
End material, 15 support body, 16 single pipe, 17 hollow pipe, 18 slab, 19 vertical wall, 20 rebar, 21
Hook, 22 double threaded bolt

Claims (3)

[Claims] 1. A veranda support in which a vertical form for forming the vertical wall is fixed to a horizontal reinforcing bar of the horizontal slab when a vertical wall and a horizontal slab constituting the veranda are simultaneously poured into concrete. In the rebar anchor for veranda support, the position of which is adjusted by using a U-bolt, screw the U-bolt to the tip of a punched pipe attached to the base end of the support body whose length can be adjusted, And a bar anchor for veranda support, wherein both ends of a holding plate for fastening a horizontal reinforcing bar of the horizontal slab are attached. 2. A holding plate is provided with a hole at one end thereof for fitting to one shaft of a U-bolt, and the other end of the holding plate is laterally formed at the other shaft of the U-bolt. The rebar anchor for a veranda support according to claim 1, wherein a U-groove is formed to engage with the anchor. 3. One of the external thread portions of the U bolt is a coarse thread,
3. The rebar anchor for veranda support according to claim 1, wherein the other is a special screw having a circular cross section.