JPH0810106Y2 - Mounting hardware and precast concrete board equipped with the mounting hardware - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a mounting hardware and a precast concrete board provided with the mounting hardware.

(Prior Art) Conventionally, in the case of constructing an outer wall of a building using a precast concrete plate in which truss rebars are buried, in-situ concrete is poured into the inside of the precast concrete plate. The inner formwork 8 is assembled at predetermined intervals.

The inner mold 8 is obtained by screwing the base portion of the mold tightening metal fitting 6'to a cap nut anchor 9 which is embedded in the concrete plate 4'in advance, whereby the flange 6a of the mold tightening metal fitting 6'and the nut.
The inner formwork 8 is supported by 6b.

(Problems to be solved by the invention) However, in the precast concrete plate as described above, it is necessary to bury the cap nut anchors individually at the predetermined positions of the concrete plate, so that the burying work takes time, and further, There is a problem in that it is not easy to bury it accurately in the burial position.

The present invention has been made in view of these problems,
It is an object of the present invention to provide a mounting hardware which allows the mounting hardware to be accurately and easily mounted at a predetermined position, and a precast concrete board provided with the mounting hardware.

(Means for Achieving the Object) The attachment metal fitting of the present invention for achieving the above-mentioned object is fixed to the reinforcing bars arranged in parallel at appropriate intervals and at appropriate intervals along the longitudinal direction of the reinforcing bars. It is characterized in that it is composed of a fixed plate and a mounting nut protruding from the fixed plate, and the mounting nut is detachably screwed to the fixed plate by a lower bolt portion.

Further, the precast concrete plate provided with the mounting hardware is provided with reinforcing bars arranged in parallel at appropriate intervals, fixing plates fixed at appropriate intervals along the longitudinal direction of the reinforcing bars, and protruding from the fixing plate. And a mounting nut
And, the mounting nut, which is detachably screwed to the fixing plate at the lower bolt portion, is mounted on the precast concrete plate in which a part of the truss reinforcing bar is projected from one surface so as to be orthogonal to the truss reinforcing bar. It is to be characterized.

(Operation) According to the above structure, the mounting nuts are accurately and easily installed at predetermined positions in the precast concrete plate by arranging the reinforcing bars at predetermined intervals, and the precast provided with such mounting hardware. The concrete form allows the inner formwork to be easily attached.

(Embodiment) An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a plan view of the mounting hardware of the present invention. In the mounting hardware A, a steel fixing plate 2 is welded to a top surface of a pair of reinforcing bars 1 which are spaced at appropriate intervals.

The fixing plate 2 has a screw hole 2a on the upper surface, and a mounting nut 3 is detachably screwed to the screw hole 2a.

The mounting nut 3 is composed of a bolt portion 3b and a long nut portion 3a, and the tip of a mold clamping member 6 is screwed onto the long nut portion 3a.

FIGS. 4 and 5 are a cross-sectional view of a precast concrete board B provided with the above-described mounting hardware A and a plan view showing a bar arrangement state before the precast concrete board B is manufactured.

Precast concrete board B is concrete board 4
And a truss reinforcing bar 5 embedded in the long side direction of the concrete plate 4 at an appropriate interval, and orthogonal to the truss reinforcing bar 5,
Moreover, the mounting nut 3 is formed by the mounting hardware A embedded so as to project from the upper surface of the concrete plate 4.

The truss reinforcing bar 5 has one top bar 5a arranged at each apex of an isosceles triangle and two bottom bar 5b of a corrugated lattice bar.
It is formed by connecting with 5c, the top reinforcement 5a is the concrete plate 4
Is protruded from the upper surface, that is, it is embedded in an inverted V shape.

Further, as shown in FIG. 5, the mounting hardware A is arranged under the lower end bar 5b of the truss rebar 5 under the condition of being orthogonal to the lower bar 5b and fixed by welding or numbering wire as in the slab bar 7. Has been done.

Further, the mounting hardware A is not limited to the lower end bar 5b of the truss rebar 5, but may be mounted over the top bar 5a of the truss rebar 5 as shown in FIG.

Further, the truss reinforcing bars 5 are not limited to the ones which are all embedded in the inverted V shape as described above, but it is also possible to embed all the V shapes, or the V shapes and the inverted V shapes alternately. As the top reinforcement 5a and the bottom reinforcement 5b of the truss reinforcement 5, it is optional to use deformed reinforcement.

(Effects of the Invention) The present invention has the following effects by adopting the above configuration.

The mounting hardware comprises rebars arranged in parallel at appropriate intervals, fixing plates fixed at appropriate intervals along the longitudinal direction of the reinforcing bar, and mounting nuts protruding from the fixing plate, and Since the mounting nut is detachably screwed to the fixing plate with the lower bolt portion, the mounting nut can be accurately and easily installed at a predetermined position.

By making the mounting nut removable, it can be mounted only on the required part, that is, on the required fixing plate, and the mounting nut can be easily replaced, so mounting according to the diameter of the mold clamp The nut can be screwed.

By attaching the mounting hardware to the precast concrete plate so that it is orthogonal to the truss reinforcing bars, it is possible to easily align the insertion holes of the formwork clamp fittings of the inner formwork with the formwork clamp fittings, and to attach them to the precast concrete board. It is possible to improve the efficiency of the work of attaching the inner formwork.

[Brief description of drawings]

FIG. 1 is a plan view of the mounting hardware of the present invention, FIG. 2 is the same front view, FIG. 3 is the same sectional view, FIG. 4 is a sectional view of a precast concrete board equipped with the mounting hardware, and FIG. 5 is the same. FIG. 6 is a plan view showing a bar arrangement state, FIG. 6 is a cross-sectional view showing another embodiment, and FIG. 7 is a cross-sectional view of a precast concrete board provided with a conventional fitting. In the figure, A: Mounting hardware B: Precast concrete plate 1: Reinforcing bar 2: Fixing plate 3: Mounting nut 4: Concrete plate 5: Truss reinforcing bar.

Claims (2)

[Scope of utility model registration request] 1. Reinforcing bars arranged in parallel at appropriate intervals, fixing plates fixed at appropriate intervals along the longitudinal direction of the reinforcing bars, and mounting nuts protruding from the fixing plates. And a mounting hardware in which the mounting nut is detachably screwed to the fixing plate by a lower bolt portion. 2. Reinforcing bars arranged in parallel at appropriate intervals, fixing plates fixed at appropriate intervals along the longitudinal direction of the reinforcing bars, and mounting nuts protruding from the fixing plates. And, the mounting nut, which is detachably screwed to the fixing plate with the lower bolt portion, is mounted on the precast concrete plate with a part of the truss rebar projecting from one surface so as to be orthogonal to the truss rebar. A precast concrete board equipped with a mounting hardware.