JP6359743B1 - Reinforcing bar retainer and method for fixing and holding a plurality of reinforcing bars - Google Patents

Abstract

The present invention provides a reinforcing bar holder that can be easily positioned and positioned without performing a process of separately attaching reinforcing bars that intersect, and a method for fixing and holding a plurality of reinforcing bars using the same.
A reinforcing bar holder 100 for fixing and holding two intersecting reinforcing bars 20 and 30 at these intersections. A bent portion 110 having a substantially C-shaped cross section that accommodates and holds one of the two reinforcing bars 20 and 30 inside, and a pair of plate-like portions 120 and 130 that extend substantially parallel to the same direction from the bent portion 110. The pair of plate-like portions 120 and 130 are opened toward the tip thereof, a housing hole for housing the other of the two reinforcing bars 20 and 30, and a cutout portion communicating with the housing hole. 123, respectively.
[Selection] Figure 2

Description

  TECHNICAL FIELD The present invention relates to a reinforcing bar holder that fixes and holds a plurality of reinforcing bars embedded in a concrete foundation, and in particular, a reinforcing bar holder that can easily fix and hold them at an intersection of a plurality of reinforcing bars, and the same. The present invention relates to a method for fixing and holding a plurality of reinforcing bars.

  When embedding a plurality of reinforcing bars in a concrete foundation applied to a building or the like, first arrange the plurality of reinforcing bars so that they are arranged substantially parallel to a predetermined direction, and in a direction intersecting with these arranged reinforcing bars, A method is known in which a plurality of reinforcing bars are arranged so as to be arranged substantially in parallel and positioned with respect to each other, and then a wire such as a wire is wound around the intersection of these reinforcing bars to be bound and fixed. And after binding a reinforcing bar in this way, concrete is poured into a formwork and it is made to dry, and a reinforcing bar and concrete are unified and it is set as a structure.

  When rebars are fixed and held by such a method, since the work of binding the rebars at the intersection is performed manually, it is difficult to accurately and stably fix and hold the rebars in a predetermined position, resulting in poor workability. There was a problem.

  For example, in Patent Document 1, in order to solve such a problem, a bolt holding portion that holds the middle of the length of an anchor bolt that is disposed vertically and a bolt insertion direction of the bolt holding portion. An anchor bolt retainer that is integrally provided with a reinforcing bar holding part that passes the reinforcing bar in a direction orthogonal thereto is disclosed. An interrupt port that opens sideways is formed in the bolt holding part, and an interrupt port that opens downward is formed in the reinforcing bar holding part, and the anchor bolt and the reinforcing bar are interrupted and held through the interrupt holes. Are connected and held orthogonally.

JP 2001-107371 A

  In the anchor bolt holder described in Patent Document 1, the bolt holding portion for holding the anchor bolt and the reinforcing bar holding portion for holding the reinforcing bar are integrally formed. By sliding the holder itself while holding the anchor bolt or the reinforcing bar in the reinforcing bar holding part, it is possible to perform a fine position adjustment and improve the working efficiency.

  However, the anchor bolt retainer disclosed in Patent Document 1 is different in the direction of the interrupt ports formed in the bolt holding part and the reinforcing bar holding part, so that the holding tool is provided at the intersection of the anchor bolt and the reinforcing bar. When attaching, two steps are required to attach one of the anchor bolts and reinforcing bars to the holder and then the other, and the number of steps increases twice as the number of holders attached increases. There was a problem.

  Accordingly, an object of the present invention is to provide a reinforcing bar holder that can be easily positioned and positioned without performing a process of separately attaching reinforcing bars that intersect, and a method for fixing and holding a plurality of reinforcing bars using the same. Is to provide.

  In order to solve the above-mentioned problem, a reinforcing bar holder for fixing and holding two intersecting reinforcing bars at these intersections according to the present invention has a cross-sectional view that houses and holds one of the two reinforcing bars inside. The C-shaped bent portion and a pair of plate-like portions extending substantially in parallel in the same direction from the bent portion, the pair of plate-like portions opening toward the tip thereof, and the two Each of the reinforcing bars is provided with a receiving hole for receiving the other inside, and a cutout portion communicating with the receiving hole.

  In the above-described invention, the pair of plate-like portions may each be formed with a pair of projecting portions that narrow the width of the opening in the vicinity of the end portions. Further, a through hole may be formed in the bent portion at a position facing the pair of plate-like portions.

  Furthermore, in the method for fixing and holding a plurality of reinforcing bars which fix and hold two intersecting reinforcing bars at these intersections according to the present invention, a bending with a substantially C-shaped cross section for accommodating and holding one of the two reinforcing bars inside is provided. And a pair of plate-like portions extending substantially in parallel in the same direction from the bent portion, the pair of plate-like portions opening toward the tip thereof, and the other of the two reinforcing bars A reinforcing hole holding member, a notch portion communicating with the receiving hole, a step of preparing a reinforcing bar holder, a step of crossing the plurality of reinforcing bars, and two of the plurality of reinforcing bars And a step of pushing the reinforcing bar holder from the side where the openings of the pair of plate-like portions are formed at the intersection of the reinforcing bars of the book.

  According to this invention, the bent portion and the receiving hole for storing and holding the two reinforcing bars are formed integrally, and the direction of the opening of the receiving hole is made to coincide with the direction of the pair of plate-like portions extending from the bent portion. Thus, since the two reinforcing bars can be fixed and held only by one pushing operation without performing the process of attaching the reinforcing bars separately, the attaching operation is easy and positioning is also possible.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the outline | summary of the reinforcing bar holder by a typical example of this invention, Comprising: Fig.1 (a) is a top view, FIG.1 (b) is a front view, FIG.1 (c) is a side view, respectively. Show. It is a figure which shows the outline of the reinforcement holding method of the reinforcing bar using the reinforcing bar holder shown in FIG. 1, FIG. 2 (a) is a 1st step, FIG.2 (b) is a 2nd step, FIG.2 (c). ) Shows the state of the third stage, and FIG. 2D shows the state of the fourth stage.

  Hereinafter, a specific configuration of a reinforcing bar holder according to a typical example of the present invention and a method for fixing and holding a plurality of reinforcing bars using the same will be described with reference to the drawings.

  FIG. 1 is a diagram showing details of a reinforcing bar holder according to a typical example of the present invention, in which FIG. 1 (a) is a top view, FIG. 1 (b) is a front view, and FIG. 1 (c) is a side view. Figures are shown respectively. 1B shows a state viewed from the left side of FIG. 1C, that is, from the plate-like portion 120 side, and the plate-like portion 130 not shown is similar to the plate-like portion 120. The repeated description is omitted as having the configuration.

  As shown in FIG. 1, the reinforcing bar holder 100 has a substantially C-shaped cross section that accommodates and holds one of the two reinforcing bars (refer to reference numeral 10 in FIG. 2 described later) inside. Part 110 and a pair of plate-like parts 120, 130 extending substantially in parallel in the same direction from the bent part 110, and one end of the pair of plate-like parts 120, 130 is open. Here, the reinforcing bar holder 100 can be manufactured by any method such as a method of press-molding a metal thin plate material or a method of molding a hard resin material with a mold.

  As shown in FIG. 1C, the bent portion 110 is a part of a circle whose inner surface has a diameter D1, and is configured such that a pair of plate-like portions 120 and 130 extend from the ends of the arc. ing. Thereby, an internal space S1 between the pair of plate-like portions 120 and 130 and an internal space S2 inside the bent portion 110 are formed. Here, the diameter D1 of the inner surface of the bent portion 110 is the same as the outer diameter d1 of the reinforcing bar 20, and the interval L1 between the pair of plate-like portions 120 and 130 is smaller than the diameter D1.

  Further, as shown in FIG. 1A, a through hole 112 may be formed in the bent portion 110 at a position opposite to the side on which the pair of plate-like portions 120 and 130 extend. If this through hole 112 is formed, when concrete is driven after positioning and fixing a reinforcing bar (see reference numeral 20 in FIG. 2), air remains between the bent portion 110 and the reinforcing bar 20 and the strength decreases. Can be suppressed.

  As shown in FIG. 1B, the plate-like portion 120 includes a pair of arm plate portions 121 and 122 extending from one end of the bent portion 110. An accommodation hole H1 having an inner diameter D2 for accommodating the reinforcing bar 30 shown in FIG. 2 is formed between the pair of arm plate portions 121 and 122. In the accommodation hole H1, a notch 123 extending in communication with the bent portion 110 is formed at the center in the width direction, and the pair of arm plate parts 121 and 122 are formed in the width direction ( It can be elastically deformed in the left-right direction in FIG. Further, the arm plate portions 121 and 122 have a pair of projecting portions 121a and 122a in the vicinity of their end portions (that is, the opening portion of the receiving hole H1) in the direction of narrowing the opening interval of the receiving hole H1. However, each may be formed.

  With these configurations, when the reinforcing bar 30 is accommodated in the accommodation hole H1, the pair of projecting portions 121a and 122a function as retaining members. Here, the inner diameter D2 of the accommodation hole H1 is the same as the outer diameter d2 of the reinforcing bar 30, and the distance L2 between the pair of protrusions 121a and 122a is smaller than D2.

  FIG. 2 is a diagram showing an outline of a method for fixing and holding a reinforcing bar using the reinforcing bar holder shown in FIG. 1, wherein FIG. 2 (a) is a first stage, FIG. 2 (b) is a second stage, FIG. 2C shows the state of the third stage, and FIG. 2D shows the state of the fourth stage. 2 (c) and 2 (d) show the state of the arrangement shown in FIG. 2 (a) when viewed from the left side, that is, from the plate-like portion 120 side, and the illustration is omitted. The shape portion 130 has the same configuration as the plate shape portion 120, and repeated description will be omitted.

  The method for fixing and holding the reinforcing bar 10 using the reinforcing bar holder 100 according to a typical example of the present invention includes the step of preparing the reinforcing bar holder 100 illustrated in FIG. 1 and the step of crossing a plurality of reinforcing bars 20 and 30. And a step of pushing the reinforcing bar holder 100 into the intersection of the plurality of reinforcing bars 10 from the side where the internal space S1 of the pair of plate-like portions 120 and 130 is opened. 2A to 2D show the states of the first stage to the fourth stage in the pushing-in process, respectively.

  As shown in FIG. 2 (a), in the first stage of the pushing process, the reinforcing bar holder 100 is arranged at the intersection of two intersecting reinforcing bars 20, 30, and the reinforcing bar 20 is arranged on the open side of the internal space S1. It arranges so that it may face. At this time, it arrange | positions so that a pair of plate-shaped part 120,130 of the holder 100 for reinforcing bars may become the direction along the longitudinal direction of the reinforcing bar 20. FIG.

  Subsequently, as shown in FIG. 2B, in the second stage of the pushing process, pushing of the reinforcing bar holder 100 is started downward with the applied pressure F from the bent portion 110 side. At this time, since the distance L1 between the pair of plate-like parts 120 and 130 is smaller than the outer diameter d1 of the reinforcing bar 20, when the reinforcing bar holder 100 is pushed into the reinforcing bar 20, the pair of plate-like parts 120 and 130 are While in contact with the outer peripheral surface, they are elastically deformed in the direction in which they are pushed apart (directions of arrows A1 and A2 in FIG. 2B).

  Further, as shown in FIG. 2 (c), in the third stage of the pushing process, the reinforcing bar holder 100 is pushed further downward while maintaining the pressure F. At this time, the interval L2 between the projecting portions 121a and 122a formed on the pair of arm plate portions 121 and 122 of the plate-like portion 120 is set to be smaller than the outer diameter d2 of the reinforcing bar 30 arranged on the lower side. Has been. For this reason, when the reinforcing bar holder 100 is pushed into the reinforcing bar 30, the pair of arm plate portions 121 and 122 are in contact with the outer peripheral surface of the reinforcing bar 30, and are pushed toward each other (arrow A <b> 3 in FIG. 2C). And A4). Although illustration is omitted, since the same operation is also performed on the plate-like portion 130 side, description thereof is omitted here.

  Subsequently, as shown in FIG. 2D, in the fourth stage of the pushing process, the reinforcing bar holder 100 is pushed further downward while maintaining the pressurizing force F. Then, the reinforcing bar 20 is accommodated in the internal space S2 of the bent part 110, and the reinforcing bar 30 is accommodated in the accommodating hole H1 of the plate-like parts 120 and 130. At this time, both the interval L1 between the plate-like portions 120 and 130 that have been elastically deformed and the interval L2 between the arm plate portions 121 and 122 return to the original interval. At this time, since both the plate-like portions 120 and 130 and the arm plate portions 121 and 122 are elastically deformed and return to the state before the deformation, both the reinforcing bars 20 and 30 have no gap in the internal space S2 and the accommodation hole H1. Retained. Thereby, the reinforcing bars 20 and 30 are fixed by the reinforcing bar holder 100.

  Here, the reinforcing bar 20 accommodated in the bent part 110 of the reinforcing bar holder 100 has a node part 22 which is the outermost periphery thereof in contact with the inner surface of the bent part 110, so that it is minute in the longitudinal direction of the reinforcing bar 20. Slide becomes possible. On the other hand, the reinforcing bar 30 accommodated in the accommodation hole H1 formed in the plate-like portions 120 and 130 preferentially contacts the bottom of the accommodation hole H1 by its own weight. For this reason, the side surface of the node part 32 of the reinforcing bar 30 comes into contact with the side surface of the plate-like part 120 or 130, and the reinforcing bar holder 100 is within the interval between the adjacent node parts 32 in the longitudinal direction of the reinforcing bar 30. (In other words, in the reinforcing bar holder 100, the node portion 32 functions as a stopper in the longitudinal direction of the reinforcing bar 30).

  In such a configuration, the above-described reinforcing bar holder 100 integrally includes the bent portion 110 that accommodates one reinforcing bar 20 and the plate-like portions 120 and 130 that include the accommodation hole H1 that accommodates the other reinforcing bar 30. doing. Further, the opening direction of the internal space S <b> 1 formed between the plate-like portions 120 and 130 is arranged so as to coincide with the longitudinal direction of the reinforcing bar 20. Accordingly, the two reinforcing bars can be fixed and held only by one pushing operation without performing the step of separately attaching the intersecting reinforcing bars 20 and 30, so that the attaching operation becomes easy. In addition, since a minute slide is possible in each of the reinforcing bars that intersect, accurate positioning at the time of attachment is also possible.

  As mentioned above, although the Example by this invention and the modification based on this were demonstrated, this invention is not necessarily limited to these examples. In addition, those skilled in the art will be able to find various alternative embodiments and modifications without departing from the spirit of the present invention or the scope of the appended claims.

10 (several) reinforcing bars 20, 30 Reinforcing bars 22, 32 Node part 100 Reinforcing bar holder 110 Bending part 112 Through hole 120, 130 Plate-like part 121, 122 Arm plate part 121a, 122a Protruding part 123 Notch part

Claims (3)

A reinforcing bar holder for fixing and holding two intersecting reinforcing bars at these intersections,
A bent portion having a substantially C-shaped cross section for accommodating and holding one of the two reinforcing bars inside along the longitudinal direction thereof, and a pair of plate-like portions extending substantially parallel to the same direction from the bent portion. Become
A through hole is formed in the bent portion,
The pair of plate-like portions each have an opening toward the tip, a housing hole that houses the other of the two reinforcing bars, and a cutout portion that communicates with the housing hole. Reinforcing bar holder. Each of the pair of plate-like portions is formed with a pair of projecting portions that narrow the interval between the accommodation holes .
The reinforcing bar holder according to claim 1, wherein the pair of projecting portions functions as a retaining member for the reinforcing bar accommodated in the accommodation hole . A method for fixing and holding a plurality of reinforcing bars, in which two intersecting reinforcing bars are fixed and held at these intersections,
A bent portion having a substantially C-shaped cross section for accommodating and holding one of the two reinforcing bars inside along the longitudinal direction thereof, and a pair of plate-like portions extending substantially parallel to the same direction from the bent portion. And the bent portion is formed with a through-hole, and the pair of plate-like portions open toward the tip thereof, and a receiving hole for receiving the other of the two reinforcing bars inside A step of preparing a reinforcing bar holder each comprising a notch communicating with the accommodation hole;
Crossing the plurality of reinforcing bars;
Pushing the reinforcing bar holder into the intersection of two reinforcing bars of the plurality of reinforcing bars from the side where the openings of the pair of plate portions are formed;
A method for fixing and holding a plurality of reinforcing bars.

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