JP3095881U - Steel spacers for fitting steel bars in formwork - Google Patents

Abstract

(57) [Summary] (Modifications required) [Problem] Compared with existing steel spacers for fitting steel bars, they can be made much cheaper, and can be easily, quickly and reliably attached to reinforcing bars, and are hard to come off. The present invention provides a steel spacer for a fitting type reinforcing steel in a formwork. SOLUTION: In a state in which a group of reinforcing bars is arranged in a form for placing concrete, the group of reinforcing bars is separated from an inner wall surface of the form by a predetermined distance, and a reinforcing bar is provided to uniformly maintain the coating thickness of the concrete. And is formed by bending a single metal wire, and is opposed to a form contact portion 1 for making contact with the inner wall surface of the form, from both ends thereof. And a pair of rising portions 2 and 2 rising inclining inwardly, and extending in a direction parallel to each other and in a downwardly inclined shape in a direction away from the upper end thereof, so that a reinforcing bar is sandwiched in the facing gap. Of 1
It is characterized in that it comprises a pair of clamping portions 3, 3 and rebar supporting portions 4, 4 whose leading end portions are horizontally bent in opposite directions.

Description

[Detailed description of the invention]       [0001]     [Technical field to which the invention belongs]   The present invention relates to a method of constructing a reinforced concrete structure. The group is separated from the inner wall of the concrete In order to keep the coating thickness of the wire uniform, The present invention relates to a steel spacer for a reinforcing steel to be fitted.       [0002]     [Prior art]   FIG. 5 shows a fitting type steel spacer 20 for reinforcing steel as a conventional example.   This spacer 20, which is made by bending a single metal wire, is a pair of left and right At each upper end of the rising leg 21, a reinforcing bar support 22 extends horizontally, and 2 between the upper ends of the two supporting portions 24 extending further upward through the loop-shaped leg portions 23. Are connected by a U-shaped horizontally-oriented rebar holding portion 25.   In order to attach the spacer 20 to the reinforcing bar B as shown in FIG. The reinforcing bar B may be inserted between the portion 22 and the reinforcing bar pressing portion 25.       [0003]   FIG. 7 shows another conventional example of a steel spacer 30 for fitting steel bars. .   This spacer 30 is also made of a metal wire, and is bent into an omega shape. As shown in FIG. 8, a reinforcing bar B is sandwiched between the tops of the pair of left and right leg members 31, 31. It is provided with a form in which two rod-shaped sandwiching members 32, 32 are laid in parallel for holding. I have.       [0004]     [Problems to be solved by the invention]   Reinforcement spacers are used to form a group of reinforcing bars until concrete is poured into the formwork. Keeping the concrete coating thickness uniform at a certain distance from the inner wall surface of the concrete It is enough to play a temporary role.   However, both of the conventional spacers 20 and 30 perform their functions. There was a major drawback in that the production cost was too high for the role to be fulfilled.       [0005]   That is, the spacer 20 is processed to be bent into the complicated shape shown in FIG. There is a disadvantage that the cost is considerably increased.   Then, even for the spacer 30, a total of four metal wires are bent. Since the work of welding and assembling these parts is troublesome, the production cost is It had to be bulky.       [0006]   Therefore, the purpose of the present invention is to provide the necessary functions while ensuring that Compared to steel spacers for reinforcing steel, it can be manufactured at a much lower cost, and the mounting operation is easier. ・ Steel space for fitting type rebar in formwork that can be performed quickly and reliably and is hard to come off To provide sir.       [0007]     [Means for Solving the Problems]   In order to achieve the above-mentioned object, according to the present invention, a steel space for a reinforcing steel fitted in a formwork. The author   Reinforcing bars are placed inside the formwork with the reinforcing bars arranged in the concrete casting formwork. In order to keep the concrete coating thickness evenly at a predetermined distance from the wall, iron It is used by fitting it to a muscle,   It is made by bending one metal wire rod, and is used to abut the inner wall of the formwork. Form contact portion 1 and a pair of risers that rise inwardly and inwardly from opposite ends thereof The parts 2 and 2 are arranged side by side in a direction away from the upper end thereof, and in a downwardly inclined shape. A pair of pinching portions 3 and 3 for extending the rebar in the opposing gap, and Reinforcement bearings 4 and 4 with end portions bent horizontally in opposite directions It is characterized by the following.       [0008]     [Embodiment of the invention]   An embodiment of the present invention will be described below with reference to FIGS.   FIG. 1 is a perspective view of a spacer A of this embodiment, FIG. 2 is a top view, and FIG. FIG.   FIG. 4 is a partial perspective view showing a use state of the spacer A, and is indicated by reference numeral B. These are reinforcing bars for concrete reinforcement.       [0009]   The spacer A is formed by bending a single metal wire.   As shown in FIGS. 1 to 3, the form is a formwork for concrete casting (not shown). Form contact part 1 for making contact with the inner wall surface of And a pair of rising portions 2 and 2 rising at an inclination angle of about 60 degrees.       [0010]   Further, from the upper end of each rising part 2, it is lowered in parallel in a direction away from each other and slightly. Extending in the direction of inclination, as shown in FIG. 3 and FIG. It is provided with a pair of sandwiching parts 3 and 3 for inserting.   Then, the distal end portions of the sandwiching portions 3 are bent in a horizontal direction facing each other and in parallel. Then, the support portions 4 and 4 for supporting the reinforcing bar B are formed.       [0011]   As shown in FIG. 2 to FIG. 4, between the pair of clamping portions 3, 3, Also has a somewhat narrower gap g.       [0012]   Next, how to use the spacer A will be described with reference to the drawings.   Spacer A is used to connect a group of reinforcing bars arranged in a concrete casting formwork to the inner wall of the formwork. Without contacting the surface directly, separate it by a predetermined distance, for example, 2 to 10 cm. It plays the role of maintaining the uniform coating thickness of the REET As shown in FIG. 4, it is attached in a fitted state over the entire surroundings in a dot binding manner.       [0013]   The mounting method is as follows: simply press the gap g of the spacer A against the reinforcing bar B Applying force to the reinforcing bar B quickly and securely in the state shown in Fig. 4 Can be done.       [0014]   The reinforcing bar B which is forcibly pushed and expanded the gap g and is sandwiched between the pair of sandwiching portions 3 and 3 Due to the elasticity of the material of the spacer A, the width of the gap g returns to the original value as shown in FIG. By doing so, it is surely prevented.       [0015]     [Effect of the invention]   As is apparent from the above description, the steel for the insertion type rebar in the formwork according to the present invention. Spacers can be made by simply bending one metal wire, and the bending Since the shape is simple, the conventional steel space for a fitting type reinforcing steel as shown in FIGS. It can be made much cheaper than sir.   In addition, due to its bent shape, it can be easily, quickly and reliably fitted to a reinforcing bar. There is no fear of coming off later.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a spacer showing an embodiment of the present invention. FIG. 2 is a top view of the spacer according to the first embodiment. FIG. 3 is a side view of the spacer. FIG. 4 is a partial perspective view showing a state in which a spacer is attached to a reinforcing bar; FIG. 5 shows a conventional example and is a perspective view of a spacer. FIG. 6 is a diagram corresponding to FIG. 4; FIG. 7 shows another conventional example and is a perspective view of a spacer. FIG. 8 is a diagram corresponding to FIG. 4; [Description of Signs] A Spacer B Reinforcing bar 1 Form contact portion 2 Upright portion 3 Nipping portion 4 Bearing portion g Gap 20, 30 Conventional spacer 21 Rising leg portion 22 Reinforcing bar support portion 23 Loop leg portion 24 Rising portion 25 Reinforcement holding part 31 Leg member 32 Clamping member

Claims (1)

[Claims for utility model registration] [Claim 1] In a state in which a group of reinforcing bars are arranged in a form in which concrete is cast, the group of reinforcing bars is separated from the inner wall surface of the form by a predetermined distance, and the thickness of the concrete coating is increased. Is used by fitting it to a reinforcing bar in order to hold it uniformly. It is made by bending a single metal wire rod, and is used to make contact with the inner wall surface of the formwork. A contact portion 1 and a pair of rising portions 2 and 2 rising from both ends thereof so as to face inward in an opposed manner.
And a pair of sandwiching portions 3 and 3 for extending the reinforcing bar in the facing gap, extending in parallel and in a downwardly inclined manner in a direction away from the upper end thereof, and facing a tip portion thereof. Bearings 4 and 4 bent horizontally in the direction
And a steel spacer for a fitting type rebar in a formwork, comprising: