JPH0116339Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> 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 housing that surrounds a connection portion of a connection terminal for connection.

<Prior art> Conventionally, this type of connection housing for lightning rods is made of a synthetic resin material, but as shown in FIGS. 33 to 34, a flat plate made of synthetic resin is cut. It was then glued together with an adhesive. In addition, the lid was always fixed with screws.

<Problems to be solved by the invention> For this reason, it was difficult to make a homogeneous case, and it was often difficult to fix the lid with screws. I could only use it. In addition, the water density is not reliable, and even though it is a product that must be used for many years, there are gaps in the bonded portion, making it difficult to guarantee watertightness for many years.

Furthermore, it has not been possible to eliminate the disadvantage that adhesion and assembly require an unreasonable amount of time.

<Means for solving the problems> Therefore, the present invention was devised with the aim of solving these various drawbacks, and the entire case is molded as one piece using a synthetic resin material. However, in particular, the shape of the lid body can be changed according to various uses, and a housing structure has been devised that can be adapted to all types of lid bodies according to the various uses.

That is, the present invention is a rectangular case made of synthetic resin for connecting a lightning arrester wire, in which a belt-shaped thick protrusion is formed in a state that crosses approximately the middle part in the longitudinal direction of the bottom, and the thick protrusion Bolts protruding toward the inner surface of the housing or hardening holes for bolts protruding toward the inner surface of the housing are integrally formed, and thick edges are integrally formed with the side walls along the opening edges of the four circumferential side walls. An outer circumferential groove 7 and an inner circumferential groove 8 are formed in the thick edge from the surface side toward the bottom side, and a top cover fixing groove is formed near at least four corners. It has a structure with bolt holes.

<Function> Thus, a conductor connection terminal is connected on the thick-walled protrusion, that is, a bolt protruded from the thick-walled protrusion,
Alternatively, the bolt, which has been firmly inserted into the bolt-tightening hole and protruded, is inserted through the connecting hole of the conductor connection terminal and connected by tightening with a nut. Various types of top covers can be attached to the outer surface with good watertightness through two types of circumferential grooves, inner and outer, recessed on the outer periphery.

This housing can be used either by being embedded in the wall of a building or by being attached 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 6 show the structure of an embodiment of the lightning arrester wire connection case according to the present invention. As shown in , a band-shaped thick protrusion 2 is integrally formed to protrude across the substantially middle portion in the longitudinal direction of the bottom 1, and the thick protrusion 2 is made to protrude toward the inner surface of the housing. The hardening holes 3, 3 for the bolts 4 are integrally formed, and a thick wall edge 6 protruding along the inner surface of the opening edge of the four circumferential side walls 5 is formed integrally with the side wall. Two circumferential grooves 7 and 8, an inner and outer circumferential groove, which are recessed from the surface side toward the bottom 1 side are formed, and the outer circumferential side is a narrow groove 7 and the inner side is a wide groove 8. Bolt (screw screw) holes 9 for attaching a metal top cover (described later) are formed at the bottom of the four corner portions of the groove 8 and the intermediate portion in the longitudinal direction. A protruding part 10 with a slightly thick wall is also formed protrudingly in the horizontally long 1-shape at the closer part, and two bolts 1 are attached to the inner surface of the protruding part 10.
1 and 11 are formed protrudingly. Further, as shown in FIG. 4, small holes 5', 5' for draining water are formed through the lower circumferential wall 5.

Then, the fixing bolts 12, 12 are tightened into the bolt tightening holes 3, 3 of the thick protrusion 2, respectively, and a two-way connection is established, as illustrated in FIGS. 7 to 11. In this case, as shown in FIGS. 7 and 8, the conductor connection terminals 13 and 14 are inserted through the holes 17 formed at the connection portions, overlapped with each other, and are connected to the cap nuts 16 and 16 through the spring washers 15 and 15.
Tighten and secure. In the case of a three-way connection, as shown in Figs. 9 to 11, three connections are made via the connection plate 18, which has a hole in the center and two threaded holes on the left and right sides, as shown in Fig. 10. The conductor connection terminals 14, 14, 14 are connected and fixed, respectively.
(There are cases where there are four poles or five poles, but they are omitted). [When fixing the terminals to the tightening holes 3, 3, head bolts may be used to fix the terminals, but since aligning the holes is troublesome, it is recommended to tighten the bolts first. (One end of the bolt may be buried during molding) The structure employs a means for inserting a terminal into a protruding bolt.]

Furthermore, an auxiliary measurement terminal (not shown) for measuring ground current, voltage, etc. is attached and fixed to the lower right protrusion 10, if necessary.

The front cover attached to the outer surface is as shown in FIGS. 12 to 28. The lid B shown in FIGS. 12 to 17 is a lid mainly used when the housing A is attached to a building wall surface 26 exposed as shown in FIG. A slightly protruding portion is provided at the outer periphery, and a decorative groove 20 is formed on the surface thereof (see Fig. 16), and the thick circumferential groove of the housing A is formed on the back side near this outer periphery. A circumferential protrusion 21 that fits into the circumferential protrusion 21 is integrally formed to protrude, and flat notches 22 are located on the outer back surface of the circumferential protrusion 21 at four locations on the outer periphery.
A tool such as a flat head screwdriver is inserted into this notch 22 to remove the lid B from the lid A. In the lower half of the surface of the top plate 19,
A slightly recessed rectangular recess is formed leaving a little of the four circumferences, and required sign boards 23, such as ground buried sign boards, for marking the date of construction etc. in the recess are placed at the four corners of the recess. A screw 25 is fixed in the screw hole 24. The state in which the lid B is fitted to the case A is as shown in FIG. This allows for a reliable fit that maintains watertightness.

The lid C shown in FIGS. 18 to 21 has four outer peripheral edges of the lid B further extended outward (27).
The extension part 27 is formed to have a thick wall that is lowered from the back surface, and the upper surface of the outermost periphery is cut obliquely, and flat notches for inserting a screwdriver etc. are provided at four places on the outer periphery back surface of the extension part 27. Sections 22... are formed. Further, the amount of protrusion of the circumferential protrusion 21' protruding near the four circumferences of the back surface of the top plate 19 is larger than the amount of protrusion on the lid B, and is said to protrude longer than the lower surface of the extension portion 27. There is. The other parts have substantially the same shape as lid B, and the same parts as lid B are labeled with the same numbers.

Therefore, the lid C is a lid body mainly used when the housing A is embedded in the wall surface of a building and the opening peripheral surface of the housing A is substantially flush with the wall surface 26. , used with the caulking frame E shown in FIGS. 22 and 23. The caulking frame E is used to prevent rainwater flowing along the building wall surface or blown into the enclosure A, and the caulking frame E, lid C and enclosure A are connected to each other. The fitting relationship is as shown in FIG.
The space between the outer circumferential protruding edge 29 and the wall surface 26 is filled with viscous caulking agent 30 to close the gap, the cover C is covered from the upper surface, and the tip of the rear circumferential protrusion 21' is attached to the cover body A. The outer circumferential extension portion 27 is fitted and inserted into the thick circumferential groove 8 of the outer circumferential extension portion 27, and the back surface of the outer circumferential extension portion 27 is brought into contact with the wall surface. The lid C is removed by inserting a screwdriver or the like into the flat notch 22 formed on the outer periphery in the same manner as the lid B.

In the case of this lid C as well, the circumferential protrusion 2 is simply placed in the thick circumferential groove 8.
Reliable fitting that maintains watertightness can be achieved only by inserting and fitting 1'.

Next, the lid D of the metal (usually brass) press product.
Explain when to use. As shown in FIGS. 24 and 25, this lid D has four outer peripheral edges 34 of a flat plate tilted toward the back side, and has four corners near the four corners and near both sides of the longitudinal middle part. Bolt (screw) through holes 3 correspond to bolt holes 9 formed in the circumferential groove 8 of the housing A.
5... is formed through the hole. This lid D is the 26th
Rubber caulking frame F shown in Figures to Figures 28
This caulking frame F also has bolt penetration holes 3 in the same position as the bolt penetration holes 35 of the lid D.
3... is formed through. This caulking frame F
As is clear from FIG. 28, there are a circumferential protruding strip 31 protruding toward the back side and an outer circumferential protruding edge 3 protruding outward.
2, the circumferential protruding strip 31 is fitted and inserted into the thick circumferential groove 8 of the housing A, and a viscous caulking agent 30 is filled between the outer circumferential protruding edge 32 and the building wall surface 26 to close it. Then, cover the lid D from above, pass through the bolt penetration holes 35 and 33, and insert and screw bolts (screws) into the bolt holes 9 formed in the housing A to close the lid D. Attach to body A.
At this time, the lower surface of the outer peripheral end of the lid D is in a state in which it is approximately in contact with the building wall surface 26.

Further, the housing A according to the present invention can use the height adjustment frame G shown in FIGS. 29 to 31. This height adjustment frame G has narrow circumferential grooves 7' and thick circumferential grooves 8' of the same shape and size as the narrow circumferential grooves 7 and 8 in the housing A on its outer surface side, and on its back side. A structure in which a circumferential protrusion 31 that fits into the thick circumferential groove 8 of the housing A is formed protrudingly, and bolt penetration holes 33 are formed at the four corners and longitudinally intermediate portion of the thick circumferential groove 8'. It's summery. As shown in FIG. 31, after the enclosure A is embedded and formed on the same plane as the building wall surface 26, when surface work such as tiling is performed on the building wall surface 26, The upper surface of the housing A is this facing material surface 26'
It will sink from there. At this time, the height adjustment frame G is used to adjust the circumferential protrusion 31 to the thick circumferential groove 8 of the housing A.
By press-fitting the parts, they are joined and connected. However, by doing this, when cladding work is carried out on a building wall surface that has been hardened by concrete pouring, etc., the opening surface of the housing A can be substantially lifted up to the cladding wall surface. It can be used as a

It is easy to understand that in this case, the height adjustment frame G is used as the substantial opening of the housing A, and the lids C and D are attached and used as shown in FIGS. 21 and 28. Probably. The height adjustment frame G
As shown in Fig. 31, several types of frames with different heights h between the back side of the frame and the bottom of the thick circumferential groove 8' are created, that is, the height H between the back side of the frame and the top surface. For example, 10m/m, 15m/m, 20m/m,
If you manufacture one with a thickness of 30m/m, etc., it can be applied to most wall thicknesses. Of course, it goes without saying that the height adjustment frames G can be used in two or more stacked layers as necessary.

Thus, in the structure of the above embodiment, the housing A is shown as having the thick edges 6 protruding from the four circumferential side walls 5 towards the inner surface of the housing A, but the third
As shown in the cross-sectional view in Fig. 2, the thick edge 6 is shaped to protrude outward from the side walls 5..., and the side walls 5... are substantially continuous from the inner circumferential surface portion of the thick edge 6. This is advantageous in that the manufacturing mold is simple and mass production can be easily carried out without using split molds.

<Effects of the invention> The synthetic resin lightning arrester wire connection box in the invention is as follows:
As detailed in the above embodiment, it can be used either by being attached to the outside of the building wall or buried in the building wall, and by using a height adjustment frame. As a result, the opening can be opened at approximately the same level as the surface of the building wall, and both synthetic resin and metal lids can be used to maintain watertightness. By forming two types of circumferential grooves, inside and outside, it is expected to have the remarkable effect of being able to maintain watertightness while also allowing the lid to be used as a device that is extremely easy to attach and detach. It is something that can be done.

[Brief explanation of drawings]

1 to 6 are diagrams showing the structure of an embodiment of the housing of the present invention, in which FIG. 1 is a front view, FIG. 2 is a cross-sectional view taken along the - line in FIG. 4 is a bottom view, FIG. 5 is an enlarged front view of the main part of the upper left end portion in FIG. 1, and FIG. 6 is an enlarged sectional view along the same line. Figures 7 to 11
The figure shows how the lightning arrester wire terminal is attached to the housing. Figures 7 and 8 are the front view and partially cutaway right side view of the terminal for two poles, and Figures 9 to 8 are the front view and partially cutaway right side view of the terminal. FIG. 11 is a front view of a three-pole terminal, a front view of a connecting plate, and a partially cutaway right side view of FIG. 9. 12 to 31 are diagrams showing the structure of an embodiment of the lid body and its attachments used in the housing body, and FIG.
Figures 17 to 17 are front views of the lid for exposure mounting;
- line sectional view, - line sectional view, -
Line cross-sectional view, − line cross-section enlarged view, −
18 to 21 are front views of the lid for embedded mounting, sectional views taken along lines, and -
22 and 23 are a cross-sectional view of the caulking frame used with the lid of FIG. The figure shows a front view and a right side view of the lid made of a metal plate, and Figures 26 to 28 are a rear view, a right side view of the caulking frame used with the lid shown in Figure 24, and a right side view of the caulking frame used with the lid shown in Figure 24. State enlarged sectional view, Figures 29 to 31 are front views of the height adjustment frame,
They are a sectional view taken along the - line and an enlarged sectional view taken along the line XI-XI. FIG. 32 is a central cross-sectional view of another embodiment of the structure of the case, and FIGS. 33 and 34 are a front view and a right side view of the center vertical cross-section of the case with the lid attached, showing the structure of a conventional product. In the figure, A is the body, 1 is the bottom, 2 is the thick protrusion, and 3
4 is a bolt hardening hole, 4 is a bolt, 5 is a side wall, 6 is a thick wall edge, 7 is an outer circumferential groove, 8 is an inner circumferential groove, and 9 is a bolt hole.

Claims (1)

[Scope of Claim for Utility Model Registration] A rectangular synthetic resin lightning arrester wire connection box A, which has a band-like thick protrusion 2 that extends across a substantially middle portion in the longitudinal direction of the bottom portion 1; Bolts 4 protruding toward the inner surface of the housing or hardening holes 3 for bolts protruding toward the inner surface of the housing are integrally formed in the thick protrusion 2, and the four circumferential side walls 5
...A thick edge 6 is integrally formed with the side wall along the opening edge, and an outer circumferential groove 7 and an inner circumferential groove 8 are formed in the thick edge 6 from the surface side toward the bottom side. A lightning arrester wire connection box made of synthetic resin is formed with bolt holes 9 for fixing the front cover at positions near at least four corners. The synthetic resin lightning arrester wire connection box according to claim 1, wherein the outer circumferential groove 7 is narrow and the inner circumferential groove 8 is wide. The synthetic resin lightning arrester wire connection box according to claim 1, wherein the thick edge 6 is formed to protrude along the inner periphery of the opening edge. A synthetic resin lightning arrester wire connection box according to claim 1, wherein the thick edge 6 is formed to protrude along the outer periphery of the opening edge. The synthetic resin lightning arrester wire connection box according to claim 1, wherein bolt holes 9 for fixing the front cover are formed at the bottom of the inner circumferential groove 8.