JPS594094Y2 - Rebar spacer - Google Patents

Description

[Detailed description of the invention] This invention supports and holds reinforcing bars installed on the top surface of slab bottom formwork, etc., which uses relatively soft board materials such as insulation and wood wool boards, in a predetermined position when constructing reinforced concrete structures. In particular, it relates to a reinforcing bar spacer that simultaneously and accurately holds upper reinforcing bars and lower reinforcing bars of different heights, that is, it has insertion holes that open vertically upward at each side end of a pedestal member that is orthogonal to a cross-shaped planar shape. The supporting member is fixedly installed, and a protrusion is provided on the pedestal member to allow the reinforcing bar to be placed on the upper surface of the pedestal member. The saddle seat for support is bent and the lengths of both leg rods extending downward are made approximately the same, and the ends of the both leg rods are inserted into the insertion holes of the lower reinforcement holding member and are erected. The present invention relates to a reinforcing bar spacer characterized in that the reinforcing bar spacer is made of plywood having a mounting hole into which a protrusion can be inserted and removed in a removable manner, and a recessed part for locking the lower end of the supporting member.

Next, the reinforcing bar spacer of the present invention will be explained based on the embodiment shown in the drawings.The reinforcing bar spacer 1 consists of a lower reinforcing bar holding member A, an upper reinforcing member B, and a base plate C made of synthetic resin or metal. The holding member A has a protrusion 3 protruding from the center of the bottom of the pedestal 2, which is assembled so that the planar shape is cross-shaped and is fitted to the base plate C, and an upper end at the outer end of the pedestal 2. Support members 5 each having a bottomed insertion hole 4 are secured to a base plate C at their lower ends.

Next, the upper reinforcement holding member B is made by bending a metal rod into a substantially inverted U shape, and forming a saddle seat 6 for supporting the reinforcing steel at the top of the bend, and cutting the ends of both metal rods into equal and appropriate lengths. and make the leg lever 7,7,
The two end portions are inserted into two of the insertion holes 4 formed in the lower reinforcement holding member A, and are erected on the lower reinforcement holding member A.

The base plate C is made of metal or synthetic resin, and is a thin plate having a substantially square shape. A raised part 8 is formed in the center so that the upper surface thereof is flat, and the lower reinforcement is held at the center of the upper surface. The member A is attached by drilling a mounting hole 9 into which the projection 3 is inserted, and by providing four recesses 10 for locking the lower end of the support member 5 of the lower reinforcement holding member A.

Therefore, when constructing a reinforced concrete structure, the reinforcing bar spacer 1 having the above-mentioned structure is installed at predetermined intervals on the upper surface of a slab lower formwork, which is used by laying a relatively soft plate material 11 such as a heat insulating material on a decorative board 12. Place an appropriate number of base plates C, and fit the protrusions 3 for attaching the lower reinforcement holding member A into the mounting hole 9 at the center of the base plate C, and attach the lower end of the support member 5 of the lower reinforcement retention member A to the mounting hole 9 of the base plate C. It is fitted into the recess 10 and locked.

Next, the lower reinforcing bars 13 are placed on the upper side of each pedestal 2, and the leg rods 7, 7 of the upper reinforcement holding member B are inserted and erected into the insertion holes 4 of the lower reinforcement holding member A, and then the top of the upper reinforcement holding member B is placed. Saddle seat part 6 provided in
By placing the upper reinforcing bars 14 on the surface, the lower reinforcing bars 13 and the upper reinforcing bars 14 are held at a constant height from the formwork surface, and the weight of the upper and lower reinforcing bars 13 and 14 is carried by the base plate C. Since the height of the upper and lower reinforcing bars 13, 14 from the formwork surface can be set and maintained appropriately without causing the soft plate material 11, such as a heat insulating material, to sag.

As described above, according to the present invention, when installing reinforcing bars on the upper surface of a slab bottom formwork that uses relatively soft board materials such as heat insulating materials and wood wool boards, the reinforcing bars are supported by plywood through the lower reinforcing member. Since this is done, the reinforcing bars can be properly supported at the height above the formwork surface without sinking into the top surface of the formwork, and the work is extremely simple, resulting in highly practical effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view, and FIG. 2 is a longitudinal sectional view showing the state of use. 1...Reinforcing bar spacer, A...Lower bar holding member, B...Upper bar holding member, C...
Base plate, 2...Plinth, 3...Protrusion for mounting, 4...Bottomed insertion hole, 5...Supporting member, 6... ...saddle seat, 7,7... leg rod,
8... Protrusion, 9... Mounting hole, 10.
... recess, 11 ... soft plate material, 12.
... Decorative board, 13 ... Lower reinforcing bar, 14.
...Top reinforcing bar.

Claims (1)

[Scope of utility model registration request] A supporting member having an insertion hole opening vertically upward is fixedly installed at each side end of a pedestal member that is orthogonal to a cross shape in plan view, and a lower reinforcement holding member is provided with a projection protruding from the lower part of the pedestal member. It is bent into an approximately inverted U shape, with a saddle seat for supporting reinforcing bars at the top, and the lengths of both leg rods extending downward are approximately the same.
The upper reinforcement holding member and the lower reinforcement holding member are installed by inserting the end portions of both leg rods into the insertion holes of the lower reinforcement holding member. A reinforcing bar spacer comprising a pedestal having a recess for locking.