JP2000160768A - Reinforcement positioning tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the work of positioning reinforcement installed between a pair of forms. SOLUTION: An entire positioning tool A is formed to be elastically bendable and deformable by means of a wire and a pair of first reinforcement receiving parts 2 through which a pair of first reinforcements 20 are passed for positioning and a pair of second reinforcement receiving parts 3 through which a pair of second reinforcements 21 are passed for positioning are formed in the positioning tool A. An abutting part 5 which is installed while abutting against a form K so that the second reinforcements 21 passed through the second reinforcement receiving parts 3 are pressed against the first reinforcements 20 passed through the first reinforcement receiving parts 2 is formed between each first reinforcement receiving part 2 and each second reinforcement receiving part 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning tool for a reinforcing bar which is used for optimizing a working state of a reinforcing bar which is inserted into concrete when the concrete containing the reinforcing bar is poured.

[0002]

2. Description of the Related Art When positioning a pair of reinforcing bars inserted vertically and horizontally between two forms on which concrete with reinforcing bars is to be cast, conventionally, for example, as shown in FIG. A pair of first reinforcing bars 5 installed in parallel between the formwork 55;
1 and a pair of second reinforcing bars 52 installed to intersect with the first reinforcing bars 51, respectively, and fix a metal holding bracket 50 bent in a U-shape by tying it with a wire 53 or the like. This defines the installation interval between the two first reinforcing bars 51. Conventionally, as shown in FIG.
The first reinforcing bar 51 is fitted into the groove 54 a of the disc-shaped plastic holder 54, and the holder 54 is set so that the holder 54 is inscribed in the mold 54. The position was prescribed.

[0003]

However, the above-described rebar construction method has a problem in that the operation of positioning the rebar is complicated, and the number of members required for positioning each pair of rebars increases, resulting in an increase in cost. There is a point. Therefore, an object of the present invention is to simplify the work of positioning a reinforcing bar inserted into concrete and executed.

[0004]

According to the first aspect of the present invention,
A positioning tool having a lateral width set so that the entire body is sandwiched and installed between a pair of molds installed in a state where both ends are respectively inscribed in a pair of molds installed with a gap for casting concrete therebetween. In this case, a pair of rebar receiving portions for inserting and positioning a pair of rebars constructed in parallel between the two formwork are formed.

In the positioning tool for reinforcing bars according to the first aspect, when a pair of reinforcing bars installed in parallel between the molds on both sides are inserted into the pair of reinforcing bar receiving portions, the installation interval between the two first reinforcing bars is reduced. In the proper state, as specified, and the construction interval from the formwork to each first reinforcing bar was as specified,
Both rebars are positioned and constructed.

According to a second aspect of the present invention, there is provided the positioning tool for a reinforcing bar according to the first aspect, wherein the first reinforcing bar is provided near the pair of first reinforcing bar receiving portions for positioning by inserting the pair of first reinforcing bars. And a second reinforcing bar receiving portion for positioning by inserting a second reinforcing bar constructed to intersect with the second reinforcing bar.

In the positioning tool for reinforcing steel according to claim 2, 1
Insert the pair of first reinforcing bars into both first reinforcing bar receiving portions, and
When a pair of second rebars respectively intersecting with the rebar is inserted into both the second rebar receiving portions, the installation interval of the first rebars and the second
The installation intervals of the reinforcing bars are as specified, and the first
The construction interval to the reinforcing bar and the construction interval from the formwork to each second reinforcing bar are both stipulated, and the first reinforcing bar and the second
Reinforcing bars are constructed in proper condition.

According to a third aspect of the present invention, there is provided the positioning tool for a reinforcing bar according to the second aspect, wherein each of the first reinforcing bar receiving portion and the second reinforcing bar receiving portion is provided in contact with the formwork. Then, the second rebar receiving portion is pressed toward the first rebar receiving portion, and the second rebar inserted in the second rebar receiving portion is pressed against the first rebar inserted in the first rebar receiving portion. It has a configuration in which the contact portions are formed.

According to the third aspect of the present invention, both first reinforcing bars are inserted through both first reinforcing bars, and both second reinforcing bars are inserted through both second reinforcing bars.
When the contact portions are respectively brought into contact with the form, the second rebar is pressed against the first rebar by the resilience of the contact portion pressed by the form, and the first rebar and the second rebar are brought into contact with each other. The state of intersection with the rebar at each rebar intersection is optimized and leveled.

According to a fourth aspect of the present invention, there is provided the positioning tool for a reinforcing bar according to the second or third aspect, wherein the whole is formed by a wire so as to be elastically bendable, and the contact portions are brought into contact with the formwork. Are formed in a bent shape with the top as a top part, and the first reinforcing bar receiving portion and the second reinforcing bar receiving portion are combined as a pair while the second reinforcing bar receiving portions are respectively hooked on the second reinforcing bar. When the first rebar and the pair of second rebars are pushed into a pair of rebar intersections where they intersect with each other, the pair of first rebars are respectively introduced into the two first rebar receiving portions. It has a formed configuration.

[0011] According to the fourth aspect of the present invention, the whole is formed of an elastically bendable wire, and the whole second reinforcing bar receiving portion is hung on the pair of first reinforcing bars, and the whole is a pair of first reinforcing bars. And 1
When the pair of first rebars is pushed into both intersections with the second rebar, the pair of first rebars are automatically introduced and positioned in the first rebar receiving portions, respectively, and both rebars are prevented from falling off.

According to a fifth aspect of the present invention, there is provided the positioning tool for a reinforcing bar according to the third or fourth aspect, wherein both abutting portions are provided with rust stoppers for preventing rust from spreading from the top of the abutting portion. It has a configuration in which each part is formed.

According to the fifth aspect of the present invention, even if the top of the abutting portion which is inscribed in the concrete and is embedded in the concrete when the concrete is poured is exposed by removing the form, the above-mentioned top may be used. The spread of rust generated from the rust is prevented by the rust stopper, and the spread of rust to each reinforcing bar positioned by each reinforcing bar receiving portion is prevented.

[0014]

FIG. 1 shows an embodiment of the present invention.
4 will be described with reference to FIG. Positioning tool A for reinforcing bars
Is a positioning tool for positioning and fixing the first vertical reinforcing bar 20 and the second horizontal reinforcing bar 21 installed between the two molds K. The first reinforcing bar 20 and the second reinforcing bar 21 are arranged in parallel between the molds K as a set of two bars.

As shown in FIG. 1, a vertical
The horizontal reinforcing bars align the installation interval D1 of the first reinforcing bars 20, 20 and the interval D2 from the formwork K to each first reinforcing bar 20 as specified, and are orthogonal to each pair of the first reinforcing bars 20, respectively. Positioning tool A is used to determine the installation interval of each pair of second rebars 21 and 21 and the installation interval from mold K to each second rebar 21 that are inserted between both formwork K in an intersecting state and constructed in parallel. , And are aligned as specified.

The positioning tool A is provided for each pair of the first reinforcing bars 20 and the second reinforcing bars 21 which intersect so that the first reinforcing bars 20 of each pair and the second reinforcing bars 21 of each pair are constructed in an appropriate construction manner. It is installed straddling the rebar intersection 22, and after casting concrete,
It is embedded in concrete together with the rebars 20 and 21.

In this embodiment, the positioning tool A is formed by bending a spring wire, and is formed so as to be capable of elastic bending deformation as a whole.

The width of the positioning tool A is
Are inscribed in the molds K on both sides, respectively, and the positioning tool A
Is set to a length that allows the positioning tool A to be sandwiched and installed between the two mold frames K in a state in which the whole is slightly compressed by being pressed from both sides by both mold frames K.

In the vicinity of the center of the positioning tool A, a straight portion 1 extending linearly along the width direction of the positioning tool A is formed.

The positioning member A is connected to both ends of the straight portion 1 and has a shape which is curved in a substantially U shape and is depressed in a direction orthogonal to the lateral width direction of the positioning member A, and has a pair of first reinforcing bars. A pair of first reinforcing bar receiving portions 2, 2 for positioning by inserting 20, are formed symmetrically.

Positioning tool A is sandwiched between both mold frames K, and 1
The pair of first reinforcing bars 20 are placed on both first reinforcing bar receiving portions 2 of the positioning tool A.
When the first reinforcing bar 20 is inserted through the first reinforcing bar 20,
Of the first reinforcing bar 2 of each pair
The installation interval D1 of 0 is aligned as specified, the installation interval D2 from the formwork K to the first reinforcing bar 20 is specified, and the installation interval D2 from the formwork K to each first reinforcing bar is aligned as specified. It is constructed in a state where it was done.

At the connection between the first reinforcing bar receiving portion 2 and the straight portion 1, the first reinforcing bar 20 is guided to guide the first reinforcing bar 20 when the first reinforcing bar 20 is inserted into the first reinforcing bar receiving portion 2. The guide portions 4 to be smoothly introduced into 2 are each formed in an inclined shape.

In the vicinity of both first reinforcing bar receiving portions 2,
A substantially U along a plane perpendicular to the plane along the rebar receiving portion 2
The second reinforcing bar receiving portions 3 each having a curved shape and being positioned by inserting a second reinforcing bar 21 that is constructed to intersect the first reinforcing bar 20 in an orthogonal manner in a circumscribed state are formed respectively.

Each first reinforcing bar receiving portion 2 and each second reinforcing bar receiving portion 3
Between the second reinforcing bar receiving portion and the second reinforcing bar receiving portion, each of which has a contact point in contact with the formwork K and is bent into a substantially V shape or a U shape as a top portion 5a. 3 is pressed toward the first reinforcing bar receiving portion 2 side, and the second reinforcing bar receiving portion 3 is pressed.
The contact portions 5 for pressing the second reinforcing bar 21 inserted through the first reinforcing bar 20 into the first reinforcing bar 20 inserted through the first reinforcing bar receiving portion 2 by resilient force are formed.

As shown by the imaginary line in FIG. 1, the V-shaped or U-shaped of the contact portion 5 in the free state is open,
When the second reinforcing bar receiving portion 3 is inserted through the second reinforcing bar 21,
An elastic force is applied to the second reinforcing bar receiving portion 3 to enhance the fixation of the second reinforcing bar 21.

The first and second reinforcing bar receiving portions 2 and 3 hold the second reinforcing bar receiving portion 3 on the second reinforcing bar 21 while holding the reinforcing bar positioning tool A as a pair of first reinforcing bars. 20 and 1
When the pair of second rebars 21 are pushed into the pair of rebar intersections 22 where they intersect, the pair of first rebars 20 is automatically introduced into both first rebar receivers 2. Are formed respectively.

The pair of first reinforcing bars 20 are connected to both first reinforcing bar receiving portions 2.
When a pair of second reinforcing bars 21 respectively intersecting with the pair of first reinforcing bars 20 are respectively inserted into both the second reinforcing bar receiving portions 3, both the second reinforcing bars 21 are pressed against the first reinforcing bars 20, respectively. And the positioning of the pair of first reinforcing bars 20 and the mounting interval of the pair of second reinforcing bars 21 are both stipulated. Installation interval D to rebar 20
Both the first rebar 20 and the second rebars 21 are respectively constructed in a state where the construction intervals from the mold 2 and the formwork K to the respective second rebars 21 are as specified.

Both contact portions 5 are covered with a rust-preventive coating such as a paint or a rust-preventive agent, and rust-preventing portions 7 are formed on both sides of the top portion 5a to prevent the spread of rust starting from the top portion 5a. I have.

[0029] The rust-preventing portion 7 is formed by the form K
Is removed, and the positioning tool A is removed except for the tops 5a of both contact portions 5.
The whole is embedded in the concrete, and the top 5
When only a is exposed, the exposed top 5
It is formed for the purpose of preventing the spread of rust generated from a.

The positioning tool A is connected to a pair of first reinforcing bars 20 and 1
When the two first reinforcing bars 20 and the two second reinforcing bars 21 are positioned by being mounted on the first reinforcing bar crossing portion 22 where the pair of second reinforcing bars 21 intersect, as shown in FIG. 21 and one of the second reinforcing bar receiving portions 3
Is hooked on one second reinforcing bar 21, and then the other second reinforcing bar receiving portion 3 is hooked on the other second reinforcing bar 21.

Subsequently, the entire positioning tool A is moved toward both rebar intersections 22 with both second rebar receiving portions 3 being hung on the second rebars 21, respectively, and being entirely orthogonal to the second rebar 21. When pushed in, both first rebars 20 are automatically introduced into the first rebar receiving portions 2 respectively, and the positioning tool A crosses both rebars in a state where the width of the positioning tool A is slightly narrowed and sandwiched between the two formwork Ks. The first reinforcement 20 and the second reinforcement 2 are attached to the portion 22.
1 is positioned by the positioning tool A and set at a specified position between the two mold frames K.

According to the above-described embodiment, each pair of first reinforcing bars 20 inserted in parallel between the two formwork K, and each pair of second reinforcing bars 20 Reinforcing bar 2
1, the spacing D1 between the first reinforcing bars 20 of each pair and the spacing between the second reinforcing bars 21 of each pair are aligned as specified, and the formwork K
Can be constructed in an appropriate state in which the distance D2 from the first reinforcing bar 20 to the first reinforcing bar 20 and the distance from the formwork K to the second reinforcing bar 21 are set to the prescribed intervals, respectively.
The positioning operation of the second reinforcing bar 21 and each pair of the second reinforcing bars 21 is simplified, and the two sets of reinforcing bars 20 and 21 having different working directions can be positioned at a time with one touch.

Further, the construction state of each reinforcing bar intersection portion 22 of the first reinforcing bar 20 and the second reinforcing bar 21 can be made uniform and stabilized, and the first reinforcing bar 20 can be moved from the first reinforcing bar receiving portion 2. It is possible to eliminate the problem that the second reinforcing bar 21 falls out or the second reinforcing bar 21 falls out of the second
It is possible to strengthen and stabilize the attachment state of the positioning tool A to the positioning member A. As shown in FIG. 1, the second reinforcing bar receiving portion 3
It has a resilient force to return to the outside and holds the second reinforcing bar 21, so that the second reinforcing bar 21 and the first reinforcing bar 2
The fixation of 0 can be stabilized.

Furthermore, the operation of positioning the first reinforcing bar 20 and the second reinforcing bar 21 of each pair by attaching the positioning tool A to each pair of reinforcing bar intersections 22 can be simplified, and the positioning tool can be positioned. It is possible to reduce the manufacturing cost by simplifying the overall configuration of A.

Further, the progress of rust generated from the top portion 5a of the contact portion 5 exposed when the form K is removed after the concrete has been cast can be accurately prevented by the rust stopper 7, and the rust after the concrete has been cast. Are rebars 20 and 2
In addition, the problem that rust is generated on the rebars 20 and 21 by moving to 1 can be solved, and the positioning tool A can be manufactured from an inexpensive material.

In the above-described embodiment, the first reinforcing bar 2
The case where the positioning tool A is applied to the arrangement configuration in which the horizontal second reinforcing bars 21 and 21 are disposed inside 0 and 20 has been described, but the second reinforcing bar is disposed outside the vertical first reinforcing bar. In the case of the arrangement configuration, the second rebar receiving part 3 is
By inserting the positioning tool A into the first and second rebars by inserting them into the rebars, both rebars can be positioned. (Not shown).

[0037]

According to the first aspect of the present invention, the pair of reinforcing bars inserted in parallel between the two molds is formed by adjusting the interval between the pair of reinforcing bars and the interval from the mold to the reinforcing bar. It can be installed in the proper condition aligned with the specified interval,
The work of positioning each pair of reinforcing bars can be simplified.

According to the second aspect of the present invention, each pair of the first reinforcing bars inserted in parallel between the two molds, and each pair of the second reinforcing bars installed so as to cross the first reinforcing bars. The spacing between the first reinforcing bars of each pair and the spacing between the second reinforcing bars of each pair are aligned as prescribed, and the spacing from the formwork to each first reinforcing bar and the spacing from the formwork to each second reinforcing bar are determined. It can be installed in the proper condition with the specified spacing, simplifying the work of positioning the first reinforcing bar of each pair and the second reinforcing bar of each pair, and one-touch two reinforcing bar pairs with different working directions. Can be positioned all at once.

According to the third aspect of the present invention, it is possible to stabilize the construction of the intersection of the first and second rebars at the intersections of the respective rebars, and to stabilize the construction of the first rebar.
It is possible to enhance and stabilize the state of attachment of the positioning tool to the intersection of both rebars without eliminating the problem that the rebar falls off from the rebar receiving portion or the second rebar falls off from the second rebar receiving portion.

According to the fourth aspect of the present invention, it is possible to simplify the work of positioning the first reinforcing bar of each pair and the second reinforcing bar of each pair by attaching the positioning tool to the intersection of each pair of reinforcing bars. At the same time, the overall configuration of the positioning tool can be simplified, and the manufacturing cost can be reduced.

According to the fifth aspect of the present invention, the progress of rust generated from the top of the contact portion exposed when the formwork is removed after the concrete is cast can be accurately prevented by the rust stopper. It is possible to eliminate the problem that rust migrates to the rebar after the abutment and a rust is generated on the rebar after the abutment, and it is possible to manufacture the positioning tool with an inexpensive material.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, and is a plan view showing a use state of a reinforcing bar positioning tool.

FIG. 2 is a view taken along line XX of FIG. 1;

FIG. 3 is a perspective view of a rebar positioning tool.

FIG. 4 is a plan view illustrating a mounting mode of a rebar positioning tool.

FIG. 5 is a plan view illustrating a conventional method of positioning a reinforcing bar.

[Explanation of symbols]

 2 1st rebar receiving part 3 2nd rebar receiving part 5 Contact part 7 Rust prevention part 20 1st rebar 21 Second rebar 22 Rebar crossing part A Rebar positioning tool K formwork

Claims (5)

[Claims] 1. A configuration in which both ends are respectively inscribed in a pair of formwork installed with a gap for concrete casting therebetween, and the whole is set so as to be sandwiched between both formworks. A positioning tool having a lateral width, for positioning by inserting a pair of reinforcing bars constructed in parallel between two molds.
Reinforcing bar positioning tool with paired rebar receiving parts. 2. A second reinforcing bar, which intersects with a first reinforcing bar, is positioned near a pair of first reinforcing bar receiving portions for positioning by inserting a pair of first reinforcing bars. 2. The reinforcing bar positioning tool according to claim 1, wherein two reinforcing bar receiving portions are formed. 3. A first reinforcing bar receiving portion is provided between the first reinforcing bar receiving portion and the second reinforcing bar receiving portion so as to be in contact with a formwork, and the second reinforcing bar receiving portion is connected to the first reinforcing bar receiving portion. 3. The positioning tool for rebar according to claim 2, wherein abutment portions are formed to press the second rebar inserted into the second rebar receiving portion by pressing the second rebar into the first rebar inserted into the first rebar receiving portion. . 4. An entire body is formed of a wire so as to be elastically bendable and deformable, and the abutting portions are respectively formed in a bent shape with a contact point in contact with a mold as a top, and the first rebar receiving portion and the second rebar receiving portion are formed. While the two rebar receiving portions are hung on the second rebar, respectively, the two rebar receiving portions are moved toward the pair of rebar intersections where the pair of first reinforcing bars and the pair of second reinforcing bars intersect. The positioning tool for rebar according to claim 2 or 3, wherein the pair of first rebars are formed so as to be respectively introduced into the first and second rebar receivers when pushed in. 5. The rebar positioning tool according to claim 3, wherein each of the abutting portions is provided with a rust stopping portion for preventing rust from spreading starting from the top of the abutting portion.