JP2503281Y2 - PC board with ground terminal - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a ground terminal arranged on a floor plate or a wall plate of a PC structure, and particularly, to a reinforcing bar inside the PC plate and a ground terminal on the surface of the PC plate. Are connected.

[Prior Art] Generally, in a conventional building, wiring for grounding is not provided except for a specific place in an electric line having a ground voltage of 150 V or less.
Therefore, when grounding of OA equipment etc. is required, a dedicated wiring for grounding is installed each time.

In addition, the PC board, which is a factory product, incorporates a reinforcing bar inside for the purpose of improving the tensile strength, but I can't find a product in which the grounding terminal is arranged on the PC board from the beginning.

[Problems to be solved by the invention] When grounding work for electrical equipment is required on the PC floorboard at a later date, the work is done using the existing electric wire conduits installed on the floorboard. However, there is often no clearance for wiring in the pipeline, and in such a case, the grounding electric wire must be arranged on the surface of the floor board, which makes this work difficult and expensive, and also looks good. It was damaged.

It is also possible to install ground terminals in all power outlets from the beginning of construction, but in this case, the ground wiring connected to the terminals should be routed through the same electric wire conduit as the normal power wiring. Since they are wired, the power supply wiring and the ground wiring must be routed in the pipeline. Therefore, there is a problem in that the diameter of the electric wire conduit is increased by the cross-sectional integration of the ground wiring and an additional ground wire material between the ground terminal and the ground electrode is required, resulting in cost increase.

Therefore, an object of the present invention is to simplify the grounding work at a later date, to conveniently ground the equipment that requires grounding, and to eliminate the work of a dedicated wiring for grounding to save material and labor.

[Means for Solving the Problems] The PC board with a grounding terminal of the present invention has a grid-like reinforcing reinforcing bar placed inside the PC board connected to a conductor, and the grounding terminal located on the PC board surface is reinforced with a grounding terminal metal fitting. It is held in a reinforcing bar and electrically connected.

The grounding terminal fitting may be composed of a clasp member that can be screwed to the reinforcing bar and a holding fitting for holding the grounding terminal on the surface of the PC board.

In addition, the above-mentioned PC board with a ground terminal welds both ends of the supporting steel plate to two adjacent reinforcing reinforcing bars in the PC board, attaches the ground terminal to the tip of the holding member held by the supporting steel plate, and It may be placed on the surface of the PC board and may be formed by connecting the ground terminal and the supporting steel plate with wiring.

In addition, each grid-shaped reinforcing reinforcing bar in the PC boards placed next to each other is made conductive by the joint reinforcing bar and wiring, and the PC with the ground terminal is connected from the appropriate place of the reinforcing bar through the PC board with the ground terminal.
A PC board with a ground terminal may be manufactured, which is electrically connected to the board and the ground terminal is arranged on the surface of the PC board.

[Operation] In construction work of PC structure, PC boards with ground terminals are placed on the floor and walls. In these PC plates, the reinforcing reinforcing bars arranged inside are connected to the conductors by the joint reinforcing bars. Leakage currents from office equipment and the like flow to the ground through the reinforcing terminals and the grounding terminals and grounding terminal fittings located on the PC board.

Therefore, when arranging equipment that requires grounding in a PC board construction structure, there is no need for grounding work, so there is no limitation due to the grounding position, and the degree of freedom in arranging equipment is increased. And
When these devices are moved and used, they can be easily grounded at any position, so there is no fear of omitting them and using the devices.

[Embodiment] A first embodiment of the present invention will be described with reference to FIGS.

A PC board with a ground terminal is placed in the construction of a PC board construction method.

In the PC board with a ground terminal, the reinforcing reinforcing bars 4 formed in a grid shape are arranged inside the PC board 3, the reinforcing reinforcing bars 4 hold the ground terminal fittings 5, and the ground terminals 6 are attached to the upper ends thereof. Is located on the surface of the PC board 3. The grid-shaped reinforcing bars 4 provided inside the PC board 3, the grounding terminal fittings 5, and the grounding terminals 6 are conductor-connected to each other, and the grounding terminals 7 such as OA equipment arranged on the floor are connected to the grounding terminals 6. By doing so, the OA equipment can be grounded to the grid-shaped reinforcing bar 4 which is conductor-connected. In addition, the ground terminal 6 is configured such that the connection terminal 8 can be screwed into the thread groove with a screw 9.

The grounding terminal fitting 5 is a substantially U-shaped biting member 11 that can bite the reinforcing reinforcing bar 4 with a bolt 10 and a bar shape for holding the grounding terminal 6 located on the surface of the PC board 3 in the biting member 11. The holding member 12 is connected to the holding member 12.

 Next, a second embodiment will be described with reference to FIGS.

In this embodiment, a long flat bar-shaped one is used as the ground terminal 13, and it is located on the surface of the PC board 3. As shown in FIG. 4, the structure of the grounding terminal fitting 5 is such that the supporting steel plates 14 are welded in parallel to the plurality of reinforcing reinforcing bars 4, the holding member 12 is vertically mounted on the supporting steel plate 14, and the grounding terminal 13 is attached to the upper end of the holding member 12. Installed. The holding member 12 is rod-shaped, and an adjusting nut 15 is provided in the middle thereof so that the length can be adjusted. Further, the grounding terminal 13 and the supporting steel plate 14 were connected by the grounding wire 16, and the grounding terminal 13 was electrically connected to the reinforcing bar 4.

 Next, a third embodiment will be described with reference to FIGS.

In this embodiment, the PC floor board 3 has two or more sections, and the reinforcing reinforcing bars 4a and 4b of the adjacent sections are electrically connected via the two joint reinforcing bars 17.

In order to electrically connect the reinforcing reinforcing bars 4a, 4b and the joint reinforcing bar 17, the first connecting terminal 18a shown in FIG.
9 is used to pinch the reinforcing bars 4a and 4b, and the second connecting terminal 18b is similarly pinched to the two joint bars 17 with screws 19. Then, the first connecting terminal 18a and the second connecting terminal 18b are connected by the conductor wire 20, and the joint rebar 17 provided in each section is welded with the auxiliary material 21 at adjacent positions on both sides as shown in FIG. Make it conductive. In this way, 2
The reinforcing reinforcing bars 4a, 4b of the section are conducted. The structure for connecting these reinforcing bars 4 to the ground terminal 6 or the ground terminal 13 on the surface of the PC board is the same as in the first or second embodiment.

 Next, a fourth embodiment will be described with reference to FIGS.

In this embodiment, the ground terminals 6 are arranged on both sides of the PC wall board 3b.

In this case, the two reinforcing bars 4a and 4b of the PC floor board 3a and the PC wall board 3
Connect the two reinforcing bars 4c and 4d of b to the joint bars 17
Welded connections were made through a and 17b, and two joint rebars 17a and 17b were connected at connection terminals 22. Also, the PC wall board 3b
From the reinforcing bars 4c, 4d or joint bars 17a, 17b of
The ground terminals 6 are connected to the ground terminals 6 arranged on both sides of the PC wall board 3b through the ground terminal fittings 5.

[Effects of the Invention] Since the PC board with a grounding terminal of the present invention is manufactured in a factory, it is not necessary to perform additional work such as wiring for grounding when grounding a building. In addition, the PC board with a grounding terminal can be provided with multiple grounding terminals as needed, so anyone can freely ground to the nearest position,
There is no concept of electric shock due to electric equipment. Further, it is not necessary to preliminarily perform extra ground wiring, and the construction cost is low.

Further, since the ground terminals are provided at various places on the surface of the PC floor plate, if a rug or the like having electric resistance is laid on the floor surface in contact with the above terminals, it acts as a conductive floor and can prevent generation of static electricity.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view and a side view showing a first embodiment of a PC board with a grounding terminal of the present invention, and FIG. 2 shows a reinforcing bar and a connecting terminal of the PC board with a grounding terminal. FIG. 3 is a sectional view showing a mounted state, FIG. 3 is a plan view and a side view showing a second embodiment of the PC board with a ground terminal, and FIG. 4 is a sectional view taken along line AA, BB of FIG. The figure is a plan view of the ground terminal of the PC board with the ground terminal, Fig. 6 is an explanatory view showing the mounting state of the joint rebar in the case of two sections of the PC board with the ground terminal, and Fig. 7 is shown in Fig. 6. Fig. 8 is a cross-sectional view of the connecting terminals, Fig. 8 is a plan view and a cross-sectional view showing the joints of the PC board with a grounding terminal of the present invention when used on the floor and walls.
FIG. 9 is a front view and a mounting cross-sectional view showing a mounting state of a joint reinforcing bar, a reinforcing reinforcing bar and a grounding terminal of a PC plate with a grounding terminal used for the wall. 3; PC plate, 4; Reinforcing rebar 5; Ground terminal metal fittings 6, 13; Ground terminal 11; Lattice member, 12; Holding member 14; Support cord, 16; Ground wire 17; Joint rebar

Claims (4)

(57) [Scope of utility model registration request] 1. A PC board is provided with a grid-shaped reinforcing reinforcing bar connected to a conductor, the reinforcing reinforcing bar is made to hold a grounding terminal metal fitting, and a grounding terminal is attached to its tip, and the grounding terminal is located on the surface of the PC board. A PC board with a grounding terminal that has been characterized. 2. The grounding terminal fitting according to claim 1, wherein the grounding terminal fitting comprises a bite member capable of being screwed to the reinforcing bar and a holding member for holding the grounding terminal on the surface of the PC board. PC board with terminals. 3. A supporting plate is welded to two adjacent reinforcing reinforcing bars in the PC board, and a grounding terminal is attached to the tip of a holding member held by the supporting steel plate, and the grounding terminal is arranged on the surface of the PC board. The PC board with a ground terminal is characterized in that the ground terminal and the supporting steel plate are connected by wiring. 4. Reinforcing grid-like reinforcing bars in adjacent PC boards with joint reinforcing bars and wiring,
A PC board with a ground terminal, characterized in that the ground terminal is placed on the surface of the PC board by connecting the ground terminal to the ground terminal through the ground terminal fitting from the appropriate place.