JPH0130836Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> This invention is a device installed at a high place such as a building to attract lightning strikes and connect an induction wire from a lightning rod to avoid direct lightning strikes to the building. The present invention relates to a box that surrounds a connection portion of a connection terminal for connection.

<Prior art> Conventionally, this type of lightning rod connection box is made of synthetic resin material, as shown in FIGS. 29 and 30, but this known product is made of synthetic resin material. Terminal mounting base 03 is made by cutting a flat plate made of synthetic resin and pasting it with adhesive, and screw holes are provided through the bottom plate 01.
The bottom plate 01 is attached to the bottom plate 01 via a wide band-shaped metal reinforcing frame 04.
It was designed to be secured with screw 02 from the back side.

<Problems to be solved by the invention> For this reason, it was difficult to make a homogeneous case, and it was often difficult to screw the lid, and the water density was also unstable, making it particularly difficult to make a homogeneous case. Although it is a product that must be used for many years, it has the disadvantage that gaps occur in the bonded area and watertightness cannot be guaranteed for many years. Furthermore, it is time-consuming to align the holes when screwing the terminal mount. Overall, it has not been possible to eliminate the drawback that bonding and assembly require an unreasonable amount of time.

<Means for solving the problems> Therefore, the present invention was devised for the purpose of solving these various drawbacks. Although it is molded as a single piece, the terminal mounting block has a particularly simple structure, and at the same time the lid mounting structure can be used as a watertight structure depending on the purpose. It is.

That is, the present invention is a box for connecting a metal lightning arrester wire having a rectangular overall shape, and has an engaging piece that has a mounting piece, a rising piece, and an engaging piece at a position near the longitudinal center of the bottom wall. The assembly is fixed in a position along the longitudinal direction of the case through the attachment piece, and a thick flat terminal mounting base having an engagement part that engages with the engagement body is attached through the engagement part. slidingly engaged and fixed from above to below along the bottom wall in a state that prevents downward movement and movement towards the front side with respect to the engaging body;
At approximately the center of the surface of the terminal mounting base, a bolt for fixing the terminal is erected, or a hole for erecting the bolt is formed, and a hole is formed on the opening edge of the four peripheral side walls of the casing facing inward of the casing. The flange portion is integrally formed to protrude, and screw holes for attaching the lid and screw holes for attaching the waterproof caulking frame are formed at least near the four corners of the flange portion.

<Function> Thus, the connecting terminal of the lightning conductor is connected to the terminal mounting block, that is, the bolt is projected from the surface side of the terminal mounting block, or the bolt is firmly inserted into the bolt installation hole and projected. Then, insert the conductor through the connection hole of the conductor connection terminal and tighten it with a nut to connect. A lid is attached to the outer surface of the box via watertight packing.

This box can be used either by being embedded in the wall of a building or by being mounted in a protruding position on the same wall. In addition, when used by being embedded in the same wall, even if an exterior wall such as tiles is mounted on the building wall, the front cover must be positioned on approximately the same plane as the exterior wall. It has been designed so that it can be used in any way.

<Embodiment> The structure of an embodiment of the present invention will be described below based on the drawings.

Figures 1 to 10 show the structure of an embodiment of the lightning arrester wire connection box according to the present invention. As shown in FIG. 3, a mounting piece 2a and a rising piece shown in FIG. 5 are used to engage and fix a terminal mount 3, which will be described later, which crosses the top of the bottom plate 1, to a substantially middle portion in the longitudinal direction of the bottom plate 1. The engaging bodies 2, 2 each having a U-shaped cross section and consisting of an engaging piece 2b and an engaging piece 2c are fixed to each other by spot welding their mounting pieces 2a with the opening sides of the U-shaped faces facing each other. 6 to 7, the notch-like engagement portion 3a has a U-shaped cross section and extends from the lower surface 3b to a position slightly above the center in the vertical width direction in the front view (FIG. 6). , 3a in a non-penetrating manner, as shown by the two-dot chain line in FIGS. 1 to 3, along the inner surface of the bottom plate 1 of the box A, from above to below. sliding downward to engage the engaging portion 3a with the engaging bodies 2, 2;
It is fixed in a state that prevents downward movement and forward movement. Approximately at the center of the surface of this terminal mounting base 3, there is a bolt hole 5 for vertically installing two bolts 4, 4 for fixing a conductor connection terminal 14, which will be described later.
5 is formed. Instead of forming the bolt holes 5, 5, one ends of the bolts 4, 4 may be buried in advance when the terminal mounting base 3 is molded.

Further, on the right half of the lower part of the box A, a metal fitting 10 having a U-shaped cross section as shown in FIG. There are protrusions 13 and 1 for fixing test terminals (PC terminals) for measuring earth current, voltage, etc. shown in Figures 9 and 10.
A horizontally elongated test terminal mounting base 11 having a diameter of 3 is inserted and fixed through a U-shaped fitting hole 12 formed on the bottom surface thereof.

Furthermore, an inwardly directed flange portion 7 toward the center of the opening surface of the box A is integrally formed on the opening edge of the four circumferential side walls 6 of the box A, and is integrally formed with the side wall 6. It has a structure in which screw holes 8 for attaching the lid and screw holes 9 for attaching the waterproof caulking frame are formed near the four corners and near the center in the longitudinal direction.

Therefore, on the surface side of the terminal mounting base 3, a first
As illustrated in FIGS. 1 to 15, in the case of two-way connection of conductor wires, as shown in FIGS. The bolts are inserted through the bolts 4, 4, respectively, and are overlapped, and are tightened and fixed with cap nuts 16, 16 via spring washers 15, 15. In addition, in the case of a three-way connection, as shown in Figures 13 and 14, the connecting plate 8 shown in Figure 15 has a hole in the center and two threaded holes on the left and right sides. three conductor connection terminals 14,1
4 and 14 are connected and fixed, respectively. (The cases of four poles and five poles are omitted).
[In fixing this terminal 14, it is possible to fix it by screwing it into the bolt hole 5 using a head bolt, but since it is troublesome to align the hole, first attach the terminal fixing base 3. Let the bolt 4 protrude from the
It is easy to fit and engage the bolt 4 into the hole of the terminal. In addition, the test terminal mounting base 11 at the lower right part of the box A is provided with protrusions 12 and 12 as necessary.
It is now possible to attach a test terminal (PC terminal) through the terminal and use it for testing.

When the box A is installed in a protruding manner on the building wall surface 22, as shown in FIG.
A flat rectangular brass plate-like lid B shown in the figure is attached to a flat rubber plate frame C on the back side of the plate surface 19.
(See Fig. 18), insert bolts (not shown) into the bolt holes (screw holes) 20... and 21... formed at each of the four corners and at the intermediate position in the longitudinal direction. Fix it by bolting it to the lid mounting screw hole 8. The rubber plate frame C serves as a watertight packing.

Next, when using the box A by embedding it in the building wall surface so that its opening surface is approximately the same height as the building wall surface 22, as shown in FIG. A lid D shown in FIG. 19 is used, which is made of a somewhat large brass plate and whose outer peripheral edge portion 23 is inclined toward the back side. The lid D is provided with bolt through holes 24 at positions corresponding to the lid mounting screw holes 8 of the box A. In this case, a rectangular rubber waterproof caulking frame E shown in FIGS. 21 and 22 (see FIG. 23 for its cross-sectional shape) having a protruding peripheral edge 28 protruding from the upper surface side of the outer periphery is used. This frame E is provided with bolt through holes 25 at positions corresponding to the lid mounting screw holes 8 of the box A, and
Bolt penetration holes 26 each having a hole for embedding the head of a countersunk screw are formed at positions corresponding to the screw holes 9 for attaching the waterproof caulking frame. As shown in FIG. 23, the caulking frame E is first inserted into the bolt penetration holes 26 on the flange portion 7 of the box A that is embedded flush with the building wall surface 22.
Use a countersunk screw (omitted) to prevent the head from protruding through the
A viscous caulking agent 29 is filled between the protruding peripheral edge 28 and the building wall surface 22, and the lid D is inserted into the bolt penetration hole 24 from the outside.
. . , 25 . . . and fix it by tightening bolts to the screw holes 8 of the box A.

The caulking frame E is manufactured in various thicknesses H, such as 5 m/m, 10 m/m, 15 m/m, etc., and as shown in Fig. 24, after the building wall is formed, If decorative work such as tiles is carried out on this wall surface 22 and the decorative wall surface 22' protrudes, use a caulking frame E with a large thickness H so that the lid D can be used as is. At the same time, the terminal end of the outer peripheral inclined edge 23 can be used in a state where it is always in close proximity to the wall surface 22'.

Next, the engaging body 2 and the terminal mounting base 3 that is engaged with the engaging body 2 to fix its posture, as referred to in the present invention.
25, the cross-sectional shape of the engaging body 2 is U-shaped, and the upper edge thereof is further bent laterally.
As shown in the figure, the cross section is Z-shaped, and the engaging part 3a formed on the terminal mounting base 3 is in an unpierced state for engagement. As described above, the engaging body 2 may be provided with a blocking portion 2d that prevents the terminal mounting base 3 from moving downward. These are just examples, but it goes without saying that other shapes can be modified and used based on this idea.

<Effects of the invention> As detailed in the above embodiment, the metal lightning arrester cable connection box of the invention can be used either by being attached to the outside of a building wall or by being buried in a building wall. By using caulking frames of different heights, the lid of the same shape can always be used in the same position at approximately the same level and height as the building facade wall, and , the lid can be used in a state where it can always maintain watertightness.

Furthermore, since it can be attached to the terminal mounting block very easily and stably to the box, it has the advantage of being easy to manufacture and being able to obtain a uniform product. It has an effect.

[Brief explanation of the drawing]

1 to 10 show an embodiment of the box of the present invention. FIG. 1 is a front view of the box, FIG. Figure 3 is a sectional view taken along line A-A, Figure 4 is a cross-sectional view taken along line B-B, Figure 5 is a perspective view of the engaging body, and Figures 6 and 7 are front and bottom views of the terminal mounting block. , Fig. 8 is a perspective view of the metal fittings, Fig. 9 and Fig. 10 are a front view of the test terminal block and its central cross-sectional bottom view, Fig. 11 and Fig. 1.
Figure 2 is a front view and vertical right side view showing the two-pole conductor connection terminal installed, and Figures 13 to 15 are a front view, vertical right side view, and vertical right side view showing the three-pole installed condition. 16 is a front view of the lid, FIG. 17 is a center longitudinal right side view showing how the lid and rubber frame are attached to the case, FIG. 18 is a front view of the rubber frame, and FIGS. Figure 20 is a front view of another lid and its center vertical right side view, Figures 21 and 22 are a front view of the waterproof caulking frame and its center vertical right side view, and Figure 23 is an enlarged partial sectional view showing the state in use. 24 is an enlarged partial sectional view showing another usage state, FIGS. 25 to 28 are perspective views showing other embodiments of the engaging body and the terminal mounting base, and FIGS. 29 and 3 are
Figure 0 is a front view and a vertical right side view of the central part of the conventional product. In the figure, A is a box, 1 is a bottom wall, 2 is an engaging body, 2a is a mounting piece, 2b is a rising piece, 2c is an engaging piece, 3 is a terminal mounting base, 3a is an engaging part, 4 is a bolt, 5 6 indicates a bolt hole, 6 indicates a side wall, 7 indicates a flange portion, 8 indicates a screw hole for attaching a lid, and 9 indicates a screw hole for attaching a waterproof caulking frame.

Claims (1)

[Scope of Claim for Utility Model Registration] A box A for connecting a metal lightning arrester wire having a rectangular overall shape, which is provided with a mounting piece 2a and a rising piece 2b at a position near the longitudinal center of the bottom wall 1. The engaging body 2 having the joint piece 2c is fixed in a posture along the longitudinal direction of the box A via the attachment piece 2a,
The thick-walled flat terminal mounting base 3 having an engaging part 3a that engages with the engaging body 2 moves downward and toward the front side with respect to the engaging body 2 via the engaging part 3a. is slidably engaged and fixed along the bottom wall 1 from above to below in a state in which the
A bolt 4 for fixing the terminal is erected approximately at the center of the surface of the terminal mounting base 3, or
A hole 5 for upright installation is bored, and an inward flange portion 7 of the box A is integrally formed to protrude from the opening edge of the four circumferential side walls 6 of the box A.
A metal lightning arrester wire connection box in which screw holes 8 for attaching a lid and screw holes 9 for attaching a waterproof caulking frame are formed near at least four corners of the box. The metal lightning protection wire connection box according to claim 1, wherein the mounting piece 2a, the rising piece 2b, and the locking piece 2c of the engaging body 2 have a U-shaped cross section. The metal lightning protection wire connection box according to claim 1, wherein the mounting piece 2a, the rising piece 2b, and the locking piece 2c of the engaging body 2 have a Z-shaped cross section. The metal lightning arrester wire connection box according to claim 1, wherein the material of the box A is a brass plate. A metal lightning protection wire connection box according to claim 1, wherein the terminal mounting block 3 is a synthetic resin molded product. Utility model registration claim 1, in which the engaging portion 3a formed on the terminal mount 3 is formed by cutting from the lower surface 3b in a non-penetrating manner along the thickness direction to a midway position in the vertical width direction. Or the metal lightning protection wire connection box described in paragraph 1.