JP4804239B2 - High load rebar crossing fasteners - Google Patents

Description

  The present invention relates to a high load reinforcing bar crossing fastener for firmly fastening and fixing a crossing part of a reinforcing bar to which a high load is applied.

  Conventionally, as a fastener for fixing a reinforcing bar crossing portion, for example, as shown in FIG. 9, a crossing portion of two reinforcing bars 102 and 103 crossing in a cross shape by a spring force of a spring wire 101 is fastened and fixed. Is known (for example, see Patent Document 1). -Conventional example 1.

  In this conventional example 1, with the engaging portion 101a formed at the center of the spring wire 101 engaged with one of the reinforcing bars 102, the locking hook portions 101b formed at both ends of the spring wire 101 are no longer provided. Since the crossing portion can be fixed only by the operation of locking to one of the reinforcing bars 103, there is a merit that the workability is good. However, the one using the spring force of the spring wire 101 has a weak fixing force, and thus has a high load. There is a problem that it can not be used to fix the reinforcing bar crossing part.

Therefore, as shown in FIGS. 10 and 11, for example, as shown in FIGS. 10 and 11, two U-bolts 202 and 202 to be attached to one reinforcing bar 201 and a central recess 204a are applied to the other reinforcing bar 203 as shown in FIGS. The two male screw portions 2 of the two U bolts 202 and 202 are inserted into the bolt insertion holes respectively formed at the two ends of the bar 204, and the nut 205 is screwed. In some cases, the crossing portions of the reinforcing bars 201 and 203 are firmly fastened and fixed between the two U bolts 202 and 202 and the bar 204 by fastening them. ..Conventional example 2
JP 2005-320816 A

  However, in the above-described conventional example 2, since the number of parts is large, the cost is high, and since the number of parts is large, the attachment to the reinforcing bar intersection is troublesome, and the four nuts 205 are screwed and fastened. Since it is necessary, the fixing work takes time and effort, and there is a problem that workability is poor.

  The problem to be solved by the present invention is to provide a high load reinforcing bar crossing fastener capable of reducing cost and improving workability by reducing the number of parts.

  In order to solve the above-mentioned problems, a high load reinforcing bar crossing fastener according to claim 1 is a high load reinforcing bar crossing fastener that firmly fastens and fixes a crossing part of a first reinforcing bar and a second reinforcing bar. The U-bolt is composed of a nut and a fastening plate, and the fastening plate is formed with an insertion hole through which the both-end male threaded portion of the U-bolt can be inserted. A thin plate-like portion that can be bent in a direction substantially orthogonal to the bending direction of the U-shaped bent portion is formed between the bent portions.

  According to a second aspect of the present invention, there is provided the high load reinforcing bar crossing portion fastener according to the first aspect, wherein the thin plate portion is annealed.

  In the high load reinforcing bar intersection fastener according to claim 1, as described above, it is composed of one U bolt, a nut, and a fastening plate, and the fastening plate can be inserted into both ends of the U bolt. An insertion hole is formed, and the U-bolt is a thin plate that can be bent in a direction substantially perpendicular to the bending direction of the U-shaped bent portion between the male screw portions at both ends and the U-shaped bent portion. First, with the U-shaped bent portion of the U-bolt engaged from above with the intersecting upper second rebar, the two thin plate-like portions are moved downward. By bending the U-shaped portion along the lower surface of the first reinforcing bar, both male threaded portions protrude upward from the second reinforcing bar, and then both male threaded portions are inserted into both insertion holes of the fastening plate. Then, by fastening each with a nut, both thin plate-like portions that engage with the lower surface of the first rebar and the second rebar The intersection of the first reinforcing bar and a second reinforcing bar in a state of being sandwiched between the fastening plate U-shaped bent portion of the U-bolt which engages the upper surface can be firmly fastened.

  And since it is composed of only one U bolt and nut and fastening plate, it is possible to reduce the cost by reducing the number of parts, and since the number of parts is small, it is easy to attach to the reinforcing bar intersection, and Since it is only necessary to screw and fasten the two nuts, the workability can be improved.

  Moreover, if it is below the diameter of the circular arc in the U-shaped bending part in a U volt | bolt, since several types of reinforcing bars from which a diameter differs can be fixed, cost reduction will be attained.

  In addition, the U-bolts are three-dimensional and easy to entangle with each other in the used state. However, since the U-bolts are planar in the same state as a normal U-bolt before use, the workability is not deteriorated by entwining each other.

  In the high load reinforcing bar intersection fastener according to claim 2, as described above, the thin plate-like portions are annealed, so that both thin plate-like portions are U-shaped along the lower surface of the lower first reinforcing bar. Therefore, it is possible to easily perform the bending work, so that labor can be reduced and workability can be improved.

  Embodiments of the present invention will be described below with reference to the drawings.

First, the high load reinforcing bar crossing fastener of this embodiment will be described with reference to the drawings.
FIG. 1 is a plan view of a use state showing a high load reinforcing bar crossing fastener of this embodiment, FIG. 2 is a front view of the use state, FIG. 3 is a view taken in the direction of arrow A in FIG. FIG. 5 is a perspective view illustrating a fastening plate, and FIGS. 6 to 8 are cross-section fastening process diagrams.

  This high load reinforcing bar intersection fastener is composed of one U-bolt 1, two nuts 2, and a fastening plate 3.

More specifically, as shown in FIG. 4 (c), the U bolt 1 is formed with male screw portions 11, 11 into which nuts 2 are screwed at both ends thereof. Thin plate-like portions 13 and 13 that can be bent in a direction substantially orthogonal to the bending direction of the U-shaped bent portion 12 are formed between the character-shaped bent portion 12 and the bent portion 12.
And these thin plate-shaped parts 13 and 13 are easy to bend | fold by annealing and processing.

  Moreover, as shown in FIG. 4 (a), the U-bolt 1 having the above-described configuration is shown in FIG. As shown in FIG. 4C, the U-shaped bent portion 12 is bent between the center male screw portions 11 and 11 and the U-shaped bent portion 12. After the metal rod-like body is crushed with a press or the like to form the thin plate-like portions 13 and 13, only the thin plate-like portions 13 and 13 or the U-shaped bent portion 12 is annealed.

  Further, as shown in FIG. 5, the fastening plate 3 is a metal plate-like body such as iron and has a structure in which insertion holes 31, 31 through which both end male screw portions 11, 11 of the U bolt 1 can be inserted are formed. It has become.

Next, functions and effects of the embodiment will be described.
In the high load reinforcing bar intersection fastener of this embodiment, because it is configured as described above,
First, as shown in FIG. 7, in a state where the U-shaped bent portion 12 of the U bolt 1 is engaged from above with the intersecting upper second reinforcing bar 5, as shown in FIG. The thin plate-like portions 13 and 13 are bent in a U shape along the lower surface of the lower first reinforcing bar 4 so that both male screw portions 11 and 11 protrude above the second reinforcing bar 5. As shown in FIG. 8, both male screw portions 11, 11 are inserted into both insertion holes 31, 31 of the fastening plate 3 and fastened with nuts 2, 2 to engage with the lower surface of the first rebar 4. The first rebar 4 and the second rebar 4 are sandwiched between the U-shaped bent portion 12 of the U-bolt 1 and the fastening plate 3 that are engaged with the thin plate-like portions 13 and 13 and the upper surface of the second rebar 5. The intersection of the reinforcing bars 5 can be firmly fastened and fixed.

  It is possible to bend the thin plate-like portions 13 and 13 into a U shape along the lower surface of the lower first rebar 4 without using a tool, but the pipe is attached to the male screw portion 11. Then, it may be bent.

  And since it is composed of only one U-bolt 1 and nuts 2 and 2 and the fastening plate 3, it is possible to reduce the cost by reducing the number of parts, and since the number of parts is small, it is easy to attach to the reinforcing bar intersection. In addition, since the two nuts 2 and 2 can be screwed and fastened, the workability can be improved.

  Moreover, if it is below the diameter of the circular arc in the U-shaped bending part 12 in the U volt | bolt 1, since it can fix several types of reinforcing bars from which a diameter differs, cost reduction will be attained.

  In addition, the U-bolt 1 is three-dimensional and easily entangled with each other as shown in FIGS. 1 to 3 in the use state, but in the state before use, the same as the normal U-bolt as shown in FIG. Since it is flat, workability is not deteriorated by being entangled with each other.

  Moreover, the thin plate-like portions 13 and 13 are annealed, so that the operation of bending the thin plate-like portions 13 and 13 into a U shape along the lower surface of the lower first reinforcing bar 4 can be easily performed. As a result, it is possible to reduce labor and improve workability.

  Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within a scope not departing from the gist of the present invention are included in the present invention.

  For example, in the embodiment, the thin plate-like portions 13 and 13 are annealed in order to make them easy to bend. However, by making the thickness of the thin plate-like portions 13 and 13 thinner, the thin plate-like portions 13 and 13 can be easily bent. it can.

It is a top view of the use condition which shows the reinforcing bar crossing part fastener for heavy loads of an Example. It is a front view of the use condition which shows the reinforcing bar crossing part fastener for heavy loads of an Example. It is A arrow directional view of FIG. It is a manufacturing-process figure of the U volt | bolt which shows the reinforcing bar cross | intersection part fastener for heavy loads of an Example. It is a perspective view which shows the fastening plate of the reinforcing bar crossing part fastener for heavy loads of an Example. It is a crossing part fastening process figure which shows the reinforcing bar crossing part fastener for heavy loads of an Example. It is a crossing part fastening process figure which shows the reinforcing bar crossing part fastener for heavy loads of an Example. It is a crossing part fastening process figure which shows the reinforcing bar crossing part fastener for heavy loads of an Example. It is sectional drawing which shows the reinforcing bar crossing fastener of the prior art example 1. It is a front view which shows the reinforcing bar crossing part fastener for high loads of the prior art example 2. It is a side view which shows the reinforcing bar crossing part fastener for high loads of the prior art example 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 U bolt 11 Male thread part 12 U-shaped bending part 13 Thin plate-shaped part 2 Nut 3 Fastening plate 31 Insertion hole 4 1st reinforcing bar 5 2nd reinforcing bar

Claims (2)

A high load reinforcing bar crossing fastener for firmly fastening and fixing a crossing part of a first reinforcing bar and a second reinforcing bar, which is composed of one U bolt and nut and a fastening plate,
The fastening plate is formed with an insertion hole through which both ends of the U bolt can be inserted.
The U-bolt has a thin plate-like portion that can be bent in a direction substantially perpendicular to the bending direction of the U-shaped bent portion between the male screw portions at both ends and the U-shaped bent portion. A high load reinforcing bar crossing fastener, characterized by being.   2. The high load reinforcing bar crossing fastener according to claim 1, wherein the thin plate-like part is annealed.

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