JPS6345804Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a holder for installing lightning protection wires on the roof of a building, etc.
Concerning improvements to the invention of No.

In the prior invention, a building fixing part is provided at one end of one shaft-shaped body, the other end side of the fixing part is formed as a male thread part, and the male thread part is long in the axial direction,
A long groove penetrating in the diametrical direction is formed, and first and second clamping pieces abutting on both sides of the lightning arrester are provided in the long groove,
By having a configuration in which the first and second nuts, which are slidably positioned in the longitudinal direction and abut on the back surfaces of both clamping pieces, are screwed into the threaded portions, the building and the lightning protection line can be connected. This has achieved the purpose of being able to freely set the spacing between the lightning conductors and to securely hold the lightning arrester line. However, in this configuration, the nut 13 and the clamping piece 11 that comes into contact with the nut 13
As shown in FIG. 6 of the above-mentioned patent application, the connection is made with a screw 1 passing through the top of the bag-shaped nut 13.
6 was screwed onto the clamping piece 11, the screw 16 would unexpectedly loosen due to the rotation of the nut 13, and the clamping piece 11 could not be moved as the nut 13 loosened and rotated. However, there is a drawback that the operation becomes cumbersome when adjusting the distance between the building and the lightning arrester line.

The present invention aims to eliminate such drawbacks.

In order to achieve this object, the lightning arrester tensioning holder of the present invention has an annular groove formed on the inner surface of at least one of the two nuts, and a ring-shaped groove formed on the back side of the clamping piece that comes into contact with the nut. This configuration employs a structure in which a fitting protrudes into the concave groove, the end of which is fitted and held so as to be relatively rotatable.

With this configuration, the nut and the clamping piece are allowed to slide relative to each other as one body without using screws, and as a result, the clamping piece is always reliably attached to the thread of the nut. The distance between the lightning protection line and the building can now be easily adjusted by moving the line as it progresses.

Next, an embodiment of the present invention will be described.

First Embodiment (See Figures 1 and 2) A rectangular flange 2 is integrally fixed to one end of a cylindrical shaft-like body 1, and a rectangular flange 2 is fixed to a building 3 on both left and right sides of this flange 2. A hole is provided through which the anchor bolt 4 is inserted. In this way, a building fixing portion 7 is formed which is fixed to the building 3 by the nut 6 screwed onto the bolt 4. A male threaded portion 8 is formed on the outer periphery of the shaft-like body 1 from near the end where the flange 2 is provided to the other end. Further, long grooves 9, 9 are formed in the threaded portion 8, passing through the threaded portion 8 in the diametrical direction, and extending along the centerline direction of the shaft-like body 1 and being open at the other end. In these long grooves 9, 9,
First and second clamping pieces 11 and 12, which abut the upper and lower sides of the lightning arrester 10 inserted therein, respectively, are arranged to be vertically slidable. Said first and second holding pieces 1
First and second nuts 13 and 14, which are screwed into the threaded portion 8, are in contact with the back surfaces of the nuts 1 and 12, respectively.

The first nut 13 is shaped like a cap nut, and has an annular groove 21 formed on the inner surface of the inner part thereof.
Cut grooves 22, 22' are formed from two opposing locations of the nut 13 to the open end of the nut 13.

On the other hand, on the back side of the first clamping piece 11, the first
A protruding piece 15 having a smaller diameter than the inner diameter of the nut 13 is provided, and the cut groove 2 is provided on both sides of the free end of the protruding piece 15.
Inserts 23 and 23' are integrally formed to be inserted into the groove 21 through the holes 2 and 22'.

The opposing surfaces of the clamping pieces 11 and 12 are V-shaped and grooves 24 are formed so that the lightning arrester wire 10 made of twisted thin wires can be wrapped around and clamped from both sides. It's summery. 20 is a drain hole provided at the lower end of the shaft-like body 1.

Second Embodiment (See FIG. 3) A fixing portion 7 is constructed by forming a female thread portion 25 on the lower end of the shaft-shaped body 1 to be screwed onto the anchor bolt 4.

The rest is the same as the first embodiment.

Third Embodiment (See FIG. 4) In this embodiment, the second nut 14 in the first embodiment also has an annular groove 21a and a cut groove 2 similar to the above.
2a and 22'a, a protruding piece 15a is provided on the back side of the second holding piece 12, and a fitting piece 23 that is fitted into the annular groove 21a is provided at the free end of the protruding piece 15a.
a, 23'a are provided in a protruding manner.

The rest is the same as the first or second embodiment.

Fourth Embodiment (See FIG. 5) The structure of the first embodiment is modified as follows so that the lightning arrester 10 can be made into a rectangular rod-shaped body. Left and right protrusions 17 and 18 are formed in the intermediate portions of both clamping pieces 11 and 12 corresponding to the internal space of the shaft-like body 1 to substantially coincide with the internal space. Then, a downward protrusion 19 is provided by protruding between the left and right protruding parts 17, 17 of the first clamping piece 11, and a downward protruding part 19 is provided between the left and right protruding parts 18, 1 of the second clamping piece 12.
8 is recessed so that the recessed portion 20 and the downward protrusion 19 substantially coincide with each other. The lightning arrester 10 is positioned in this recessed portion 20 and is configured to be clamped from above and below.

Other aspects are the same as those in the first to third embodiments.

In both of the above embodiments, a strong clamping force for the lightning arrester 10 can be obtained, so that in the past, the lightning arrester 10 would have sagged unless holders were provided at approximately 1 m intervals, but in the above embodiments, the lightning arrester 10 would sag. Even when the holders were installed at intervals of approximately 10 m, only slight sagging occurred, which was not a practical problem.

[Brief explanation of the drawing]

The drawings show an embodiment of the lightning arrester tensioning and holding system according to the present invention. Figure 1 is an exploded perspective view of the first embodiment, and Figures 2A and 2B are vertical front views showing the assembled and used state of the first embodiment. FIG. 3 is a vertical cross-sectional view showing the main parts of the second embodiment, FIG. 4 is a vertical cross-sectional front view showing the main parts of the third embodiment, and FIG. 5 is a plan view of the main parts of the fourth embodiment. It is an exploded perspective view showing an example. FIG. 6 is a longitudinal sectional view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Shaft-like body, 7... Fixing part, 8... Male thread part, 9... Long groove, 10... Lightning arrester wire, 11, 12...
...Holding piece, 13, 14... Nut, 21... Annular groove, 23, 23'... Fitting piece.

Claims (1)

[Scope of Claim for Utility Model Registration] A building fixing part 7 is provided at one end of one shaft-like body 1, and a male thread part 8 is provided on the other end side of the fixing part 7.
A long groove 9 which is long in the axial direction and penetrates in the diametrical direction is formed in the male threaded part 8, and first and second clamping pieces 1 abut on both sides of the lightning arrester wire 10.
1 and 12 are positioned in the long groove 9 so as to be slidable in the longitudinal direction thereof.
In the lightning wire tensioning holder, in which first and second nuts 13 and 14, which abut on the back surfaces of the bolts 1 and 12, respectively, are screwed into the threaded portion 8, both the nuts 13,
An annular groove 21 is formed on the inner surface of at least one of the nut 14, and the end portion is fitted and held in the groove 21 on the back side of the clamping piece 11 that contacts the nut 13 so as to be relatively rotatable. 23,
23' is a lightning arrester tensioning holder with a protruding part. The lightning arrester tensioning holder according to claim 1, wherein the lightning arrester wire 10 is made by twisting a large number of thin wires. The lightning arrester tensioning holder according to claim 1, wherein the lightning arrester 10 is an integral body with a rectangular cross section.