JP2011155770A - Equipotential bonding metal fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bonding metal fitting which is in an unprecedented new form and besides can be utilized, being suited to a little difference in a diameter of reinforcing rods thereby having versatility. <P>SOLUTION: It includes first and second catching plates 1 and 2 which are bent in arc forms in a longitudinal direction. The head of a T-shaped assembling piece 6 provided at one end in the longitudinal direction of the second catching plate is set freely in an assembling hole 5 provided at one longitudinal end of the first catching plate, whereby the first and second catching plates 1 and 2 are assembled so that the other end side may open and close. Then, it is provided with slots 12 and 13 in the longitudinal direction, in the intermediate of each catching plate 1 and 2, severally with the second catching plate side longer than the first catching plate side. A fastening bolt 3 which is equipped with a rectangular root conforming to the slot 13 on the side of the second catching plate 2 is passed through the slots 12 and 13, and a nut 4 is screwed onto the tip of the bolt projecting from the slot 12 on the side of the first catching plate 1. A piece 7 is projected, in the direction crossing the first catching plate 1, at the other end of the first catching plate 1, and this piece 7 is provided with a connection hole 10 for the connecting bolt of the crimp terminal 8a of a lead wire 8. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  In order to obtain an equipotential bonding device that protects various devices by minimizing the potential difference between parts by equalizing the potential in the building during a lightning strike, the present invention is assembled to a reinforcing bar of a concrete building. It is related with the equipotential bonding metal fitting used.

  A pair of two split holding frames, using the hinges and fitting bolts on both ends thereof, tightening the reinforcing bars arranged inside the holding frame and attaching them to the reinforcing bars, one holding frame In addition, there is a structure in which one end is fixed to another reinforcing bar and the other end of the lead wire is fixed (for example, Patent Document 1).

JP 2003-199239 A

  The conventional structure is a single bolt tightened nut cracker-type fastening fitting applied to an equipotential bonding fitting. The clamping frame constituting the fastening bracket is a cylinder. Since the body is halved, there is a drawback that the diameter of the reinforcing bars arranged between the holding frames is limited.

  The present invention has been devised with the object of providing an equipotential bonding metal fitting having a novel structure that can deal with some differences in the diameter of the reinforcing bars.

  First and second clamping plates bent in an arc shape along the longitudinal direction are provided, and an assembly hole provided at one end in the longitudinal direction of the first clamping plate is connected to one end in the longitudinal direction of the second clamping plate. The neck of the provided T-shaped assembly piece is loosely fitted, and the first and second clamping plates are assembled so that the other end side opens and closes. Are provided with a long hole extending along the second holding plate side from the first holding plate side, and a fastening bolt provided with a square root portion corresponding to the long hole on the second holding plate side in the long hole. A nut is screwed into the tip of the bolt that penetrates and protrudes from the long hole on the first clamping plate side, and the other end of the first clamping plate is a piece in a direction intersecting the first clamping plate And a connection hole for a connection bolt of a crimp terminal of a lead wire is provided in this piece.

  According to the present invention, since the first and second clamping plates are bent in an arc shape along the longitudinal direction and assembled to each other, the bonding bracket has an unprecedented form. In addition, it can be used in response to slight differences in the diameter of the reinforcing bars because the reinforcing bars are tightened by interposing the reinforcing bars between the one end side assembled with each other and the square root bolts. A versatile bonding fixture can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The partially expanded view of FIG. FIG. 3 is a partially cutaway plan view of FIG. 2. The partial missing top view just before assembling to a reinforcing bar. The partial missing top view of the state used for the thin rebar.

  As shown in FIG. 1, the equipotential bonding metal fitting A according to the present invention is attached to the reinforcing bars m and n of a concrete building, and the reinforcing bars m and n are electrically connected to equalize the potential in the building. (M represents a thick reinforcing bar and n represents a thin reinforcing bar).

  The equipotential bonding metal fitting A is composed of first and second clamping plates 1 and 2 bent in a gentle arc along the longitudinal direction, and a fastening bolt 3 and a fastening nut 4 for assembling them together. .

  The first and second sandwiching plates 1 and 2 are provided at the center portion of one end portion in the longitudinal direction of the first sandwiching plate 1 in a substantially battledore-like assembly hole 5 having a wide diameter width at one end side. A substantially T-shaped assembly piece 6 provided at one end in the longitudinal direction of the sandwiching plate 2 is inserted, the neck 6a is engaged with the assembly hole 5, and the head (tip) 6b is assembled. These are assembled to each other so as to be locked in the hole 5 (the wide diameter portion thereof). The other end sides of 2 are in close contact with each other and open and close.

  The first sandwiching plate 1 is bent at the other end in the longitudinal direction in a direction perpendicular to the first sandwiching plate 1 to project a piece 7, and this piece 7 is provided with a connection hole 10. The crimp terminal 8a of the lead wire 8 is connected by a connection bolt 9 inserted through the connection hole 10 and a connection nut 11 screwed into the connection bolt 9.

  The first and second clamping plates 1 and 2 that are assembled to each other at one end by the engagement relationship between the assembly hole 5 and the assembly piece 6 are elongated holes 12 and 13 that are long in the longitudinal direction in the middle portion in the longitudinal direction. Is provided.

  The long holes 12 on the first clamping plate 1 side are shorter than the long holes 13 on the second clamping plate 2 side, and are provided in a positional relationship so as to overlap the intermediate portion of the long holes 13.

  And in the long holes 12 and 13, the head 3a is arranged in the long hole 13 on the second clamping plate 2 side, and the tip part 3b on the screw side is arranged in the long hole 12 on the first clamping plate 1 side, The clamping bolt 3 is passed through and is passed to both sandwiching plates 1 and 2.

  The clamping bolt 3 is adjacent to the rectangular head 3a having a width slightly narrower than the width of the elongated hole 13 of the second clamping plate, and is longer than the vertical width (longitudinal width) of the head 3a. A square root portion 3c having a short width and substantially the same width is provided, and a long hole 12 of the sandwiching plate 1 is inserted from the inside of the first sandwiching plate 1, and the tightening nut 4 is screwed into a tip protruding from the long hole 12. In combination, the first clamping plate 1 is used in advance.

  Then, a reinforcing bar (m or n in the case of illustration) is interposed between the sandwiching plates 1 and 2 so as to be arranged on the assembly hole 5 or assembly part 6 side, and the head 3a is opposed to the long hole 13. When the square nut 3c is engaged with the long hole 13 and is tightened with the tightening nut 4 screwed into the tip 3b (the engagement of the long hole 13 of the square root 3c causes the tightening bolt 9 to be The rebar m or n is clamped by the sandwiching plates 1 and 2, and the bonding metal fitting A constituted by the sandwiching plates 1 and 2 is assembled to the rebar m or n.

  At the same time as this assembling operation, the crimping terminal 8a on the other end side of the lead wire 8 having the crimping terminal at one end fixed to another reinforcing bar or the like is superposed on the piece 7 of the first sandwiching plate 1, and the terminal 8a. A bonding apparatus using the bonding fitting A can be obtained by screwing and tightening a connection nut 11 to the tip through a connection bolt 9 in the connection hole 10 provided in the piece 7.

  In the case of the embodiment, the protrusions 14 and 14 are provided relative to each other in the longitudinal direction of the long hole 13 provided in the second sandwiching plate 2 to restrict the movement of the tightening bolt 3 along the long hole 13. The long hole 13 is substantially divided into two, and when the tightening bolt 3 is inserted into one half of the assembly hole 5 side, it is applied to a relatively thin reinforcing bar n set in advance, and the tightening bolt is applied to the other half. 3 is inserted and used, it is applied to a relatively thick reinforcing bar m, but there is no inconvenience even if the protrusion 14 is omitted, and the present bonding fitting can be applied to reinforcing bars of various diameters. Is mainly determined by the length of the long hole 13.

DESCRIPTION OF SYMBOLS 1 1st clamping plate 2 2nd clamping plate 3 Clamping bolt 4 Clamping nut 5 Assembly hole 6 Assembly part piece 7 Part piece 8 Lead wire 10 Connection hole 12, 13 Long hole

Claims (1)

  First and second clamping plates bent in an arc shape along the longitudinal direction are provided, and an assembly hole provided at one end in the longitudinal direction of the first clamping plate is connected to one end in the longitudinal direction of the second clamping plate. The neck of the provided T-shaped assembly piece is loosely fitted, and the first and second clamping plates are assembled so that the other end side opens and closes. Are provided with a long hole extending along the second holding plate side from the first holding plate side, and a fastening bolt provided with a square root portion corresponding to the long hole on the second holding plate side in the long hole. A nut is screwed into the tip of the bolt that penetrates and protrudes from the long hole on the first clamping plate side, and the other end of the first clamping plate is a piece in a direction intersecting the first clamping plate An equipotential bonding bracket in which a connection hole for a connection bolt of a crimp terminal of a lead wire is provided in this piece.

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