JP2011155769A - Equipotential bonding metal fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an equipotential bonding metal fitting which can be assembled to a reinforcing rod by absorbing a little difference in a diameter of the reinforcing rod thereby having versatility and being easy to use. <P>SOLUTION: The equipotential bonding metal fitting is composed of a pair of metallic plate-shaped catching plates 1 and 2, which catch reinforcing rods m engaged with engaging grooves 6 and 16 and fasten them with bolts 3 and 3' and nuts 4 and 4' thereby attaching them to the reinforcing rods m. Then, one catching plate 1 is provided with a through-hole 12 for a bolt 11 for connection of the crimp terminal 10a of a lead wire 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  In order to obtain an equipotential bonding apparatus 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. The present invention relates to an equipotential bonding metal fitting to be 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 has a half-divided shape, the diameter of the reinforcing bars arranged between the holding frames is limited, and since the holding frame is hinged at one end, when assembled to the reinforcing bars, It is necessary to open until a gap that can engage the reinforcing bar is formed around the hinge pin, and it may be difficult to secure the space area such as when the reinforcing bar is standing.

  The present invention has been created with the object of providing an equipotential bonding metal fitting that is versatile and easy to use, paying attention to the drawbacks of the conventional example.

  It consists of a pair of metal plate-shaped clamping plates that are clamped to the reinforcing bars with bolts and nuts with the reinforcing bars engaged with the engaging grooves, and one of the clamping plates has a through-hole for connecting bolts of lead wire crimping terminals. It is set as the structure which provided the hole.

  In addition, when a piece is provided on one of the clamping plates in a direction perpendicular to the reinforcing bar and a point provided with a through hole for a connecting bolt is added to the piece, the lead wire can be easily attached. Furthermore, it is possible to provide a bonding bracket that is more versatile and easy to use.

  According to the present invention, since the reinforcing bar is sandwiched between the flat plate-like clamping plates, a slight difference in the diameter of the reinforcing bar (due to design or construction errors) can be absorbed. Therefore, it is possible to provide a product that is versatile and easy to use.

  Also, when assembling the reinforcing bars, unlike the conventional example, an opening / closing operation around the shaft is not required, so that the assembling work can be performed in a narrow space without taking up space.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The partially expanded view of FIG. The top view of FIG. FIG. 4 is a side view of FIG. 3. Sectional drawing 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 according to the present invention includes a metal plate-like first holding plate 1 and a metal plate-like second holding plate 2 which are overlapped with each other through reinforcing bars m or n. The bolts 3 and 3 'and the nuts 4 and 4' are used by tightening each other.

  The first sandwiching plate 1 is composed of a lower plate-shaped flat body in which both ends along the longitudinal direction are bent to provide reinforcing part pieces 1b and 1b relative to each other, and a rectangular part 1a is projected from the center of one end in the longitudinal direction. . Then, the center of the longitudinal direction is recessed in the bending direction of the reinforcing piece 1b to provide an engaging groove 6 having both ends open, and the reinforcing bar m or n is engaged with the engaging groove 6, and the engagement is performed. Through holes 7 and 7 ′ of the bolts 3 and 3 ′ are provided in the center along the longitudinal direction on both sides of the groove 6, and a straight line connecting the through holes 7 and 7 ′ is provided in the center of the piece 1 a. A through hole 12 for assembling the connection bolt 11 of the crimp terminal 10a of the lead wire 10 is provided on the top.

  The 2nd clamping board 2 is comprised with the flat board body substantially the same shape as the said 1st clamping board 1 of the form which abbreviate | omitted the piece 1a of the 1st clamping board 1. As shown in FIG. That is, both ends along the longitudinal direction are bent so that the reinforcing pieces 2b and 2b are relatively provided, and an engaging groove 16 is provided at the center along the longitudinal direction in the same manner as the first sandwiching plate 1, and both sides of the engaging groove 16 are provided. Similarly, bolts 3 and 3 'and through holes 17 and 17' are provided.

  One of the bolts 3 is a round head bolt, and the other bolt 3 'is a T-shaped bolt having a rectangular head 3'a. The through holes 7 and 17 for one round head bolt provided in the plates 1 and 2 are formed by through holes having a diameter smaller than that of the round head 3a so that the round head 3a is locked, and the other bolt 3 'is penetrated. The holes 7 ′ and 17 ′ can be freely inserted by matching the rectangular head 3 ′ a of the T-bolt. When the rectangular head 3 ′ a is turned 90 °, the holes 7 ′ and 17 ′ are almost the same as the rectangular head 3 ′ a. It is made up of through holes of the same shape and the same size. The reason why the through-hole 17 on the second clamping plate 2 side is rectangular is to prevent the bolt 3 from rotating together with the nut 4 by engaging the square root of the bolt 3. Of course, the other through-holes 17 'of the second clamping plate 2 are also expected to have this function (the bolt 3' is a square rooted bolt).

  Then, the bolt 3 is passed through the through holes 7 and 17 ′ from the through hole 17 side, the nut 4 is screwed to the tip protruding from the through hole 7, and the reinforcing bar m is interposed between the both sandwiching plates 1 and 2. The nut 4 'is screwed to the tip, the head 3'a of the bolt 3' is passed through the through hole 17 ', the first and second clamping plates 1, 2 and the bolt 3 and 3 ', the first clamping plate 1 is held in such a state that the reinforcing bar m or n is engaged with the engaging groove 6 of the first clamping plate 1, and the second clamping plate 2 is connected to the bolt 3 The second sandwiching plate 2 is overlapped with the first sandwiching plate 1 in the holding state so that the engaging groove 16 comes to the position of the reinforcing bar m or n, and the bolt 3 ' The head 3'a is inserted and turned so as to coincide with the hole shape of the through hole 17 'on the second clamping plate 2 side, and the bolt head 3'a is inserted into the through hole 17'. The sandwiching plates 1 and 2 are arranged in the intersecting (orthogonal) direction, and the nuts 4 and 4 'are tightened so that the clamping plates 1 and 2 are in the positions of the engagement grooves 6 and 16 with the bolts 3 and 3' and the nuts 4 and 4 '. Is tightened and fixed to the reinforcing bars m and n.

  Then, in tandem with the work of assembling (clamping and fixing) the sandwiching plates 1 and 2 to the reinforcing bars m or n, the through holes 12 provided in the piece 1a on the first sandwiching plate 1 side and lead wires ( An equipotential bonding apparatus can be obtained by matching the crimp terminal 10a at one end of 10) (with the other end connected to another reinforcing bar or the like) and connecting them using the connection bolt 11 and the connection nut 13.

  In addition, since the piece 1a provided in the 1st clamping board 1 is protrudingly provided in the direction orthogonal to the reinforcing bar m to which the said metal fitting A was attached (FIG. 2), the said part is made into the reinforcing bar m as needed. The crimping terminal 10a of the lead wire 10 can be easily attached by bending regardless of the attachment portion (the main body side of the sandwiching plate 1 having the through holes 7, 7 'and the engaging grooves 6).

DESCRIPTION OF SYMBOLS 1 1st clamping board 2 2nd clamping board 3, 3 'bolt 4, 4' nut 10 Lead wire 10a Crimp terminal 11 Connection bolt 13 Connection nut

Claims (2)

  It consists of a pair of metal plate-shaped clamping plates that are clamped to the reinforcing bars with bolts and nuts with the reinforcing bars engaged with the engaging grooves, and one of the clamping plates has a through-hole for connecting bolts of lead wire crimping terminals. Equipotential bonding hardware with holes.   The equipotential bonding metal fitting according to claim 1, wherein a piece is provided on one of the clamping plates in a direction perpendicular to the reinforcing bar, and a through hole for a connection bolt is provided on the piece.

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