JPH09147207A - Ground structure for automatic vending machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the grounding of an automatic vending machine through a simple means. SOLUTION: When an automatic vending machine is installed, a grounding auxiliary member 16 is placed between a leg part 2 and a fixing metallic parts 5 which fixes the part 2 on the installing surface 3a of the vending machine. Thus an electrical conduction state is secured between the main body 1 of the vending machine and the parts 5. Then an anchor bolt 6 having a projection part 6c at its tip and also a grounding function is driven into the ground 4 via the parts 5 existing on the surface 3a. In such a construction of installation, the grounding is secured for the vending machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grounding structure of a vending machine for grounding the vending machine.

[0002]

2. Description of the Related Art Generally, a metal outer box of a vending machine may be charged due to dielectric breakdown of an internal electric circuit. As a preventive measure against this, it is legally obligatory to carry out earth grounding work to make the potential as low as possible between the metal part charged by dielectric breakdown and the ground. For this purpose, vending machines are grounded.

Generally, the power supply for a vending machine is AC200.
V or AC100V is used, and there are cases where only AC100V is used, or both AC200V for a refrigerator and AC100V for lighting are used. In the vending machine, grounding work is required according to the electrical equipment technical standard according to the power supply of the vending machine to be installed, and the grounding work is performed when the vending machine is installed.

FIG. 5 shows a conventional vending machine installation and grounding condition. In the figure, the vending machine body 1 is provided with legs 2 for installation at the four corners of the bottom, while an installation table 3 is driven onto the ground 4 with concrete for installing the vending machine 1. The fixing metal fitting 5 corresponding to this has a leg hole 5a formed at one end side into which the lower end of the leg 2 is fitted, and a bolt hole 5 through which the anchor bolt 6 penetrates at the other end side.
b is formed, and the tip legs 5c and 5d at both ends are in contact with the installation surface 3a. Then, the anchor bolt 6 having the sleeve 7 inserted thereinto is inserted into the anchor bolt hole 3b of the installation base 3 through the bolt hole 5b of the fixing bracket 5, and the flat washer 8 and the spring washer 9 are interposed in the screw portion 6a to form the nut. Tighten 10. As a result, the skirt of the sleeve 7 is enlarged by the tapered portion 6b of the anchor bolt 6, and the anchor bolt 6 is fixed in close contact with the anchor bolt hole 3b via the sleeve 7.

On the other hand, the earth rod 11 is deeply buried in the earth 4 through the earth earth hole 3c of the installation table 3,
A ground wire 12 connected to the upper end of is connected to a ground connection terminal 13 provided on the back plate 1a of the vending machine body 1. In this way, vending machines prevent falls and electric shocks.

[0006]

By the way, the installation on the installation base 3 by the anchor bolts 6 and the fixing brackets 5 shown in FIG. 5 for preventing the fall is performed on many vending machines. There are not many vending machines that have earth grounding work due to lack of recognition and economic burden.

Most of the vending machine main body 1 is equipped with a ground connection terminal 13 and is provided with an earth leakage breaker inside. However, the ground rod 11 is buried and the ground wire 12 is connected to the ground connection terminal 13. If not connected, the ground function will not work. Therefore, it is desired to develop a means for easily grounding the earth.

Therefore, it is an object of the present invention to provide a grounding structure for a vending machine which can be easily grounded when installing the vending machine.

[0009]

According to a first aspect of the present invention, in a grounding structure of a vending machine for grounding an outer casing of a main body to the ground, a fixing metal fitting for fixing a leg portion provided on the outer casing of the main body to an installation surface. And an auxiliary member for grounding is interposed between the leg and the leg to electrically connect the outer casing of the main body and the fixing bracket,
It is designed to have an earth grounding function by driving anchor bolts into the ground through the fixing brackets on the installation surface. With the above configuration, if the anchor bolt having the earth grounding function is driven into the ground at the time of installation,
The outer box of the main body is grounded to the earth. Therefore, the grounding can be easily performed, and it is economical without the need for a dedicated grounding work unlike the conventional case. Therefore, it is possible to prevent the grounding from being grounded due to troubles and the like, although the conventional installation is performed for preventing the fall.

According to a second aspect of the present invention, in the grounding structure of a vending machine for grounding the outer box of the main body to the ground, the anchor bolt is attached via a fixing bracket for fixing the leg portion provided on the outer box of the main body to the installation surface. While being driven into the ground, it is designed to have a grounding function by connecting the fixing bracket to the outer box of the main body with a grounding connection line. With the above configuration, if an anchor bolt having a grounding function is driven in at the time of installation and the ground connection wire is connected to the outer box of the main body, simple earth grounding can be done, and dedicated earth grounding work is done as before. It is economically unnecessary and eliminates the situation where earth grounding is not performed due to trouble.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 are views showing a first embodiment of the present invention. The vending machine main body 1 is provided with legs 2 for installation at the four corners of the bottom of the vending machine main body 1 while an installation base 3 is provided. Forms an anchor bolt hole 3b for fixing the fixing bracket 5 on the installation surface 3a by hitting concrete so that the vending machine body 1 can be installed. The fixing metal fitting 5 has a leg hole 5a formed on one side and a bolt hole 5b formed on the other side so that the tip legs 5c and 5d at both ends contact the installation surface 3a.

The anchor bolt 6 is a long rod-shaped body having a threaded portion 6a formed at the rear end thereof, a projection 6c having a grounding function formed at the tip thereof, and a tapered portion 6b formed at the center body.

As shown in FIG. 3, the leg 2 of the vending machine body 1 has a grounding auxiliary member 16 composed of an upper plate 17, a coil spring 18 and a lower plate 19 as shown in FIG.
The lower end contacts the installation surface 3a through the a, and the upper plate 17 of the grounding auxiliary member 16 is urged by the lower coil spring 18 and contacts the bottom surface of the vending machine body 1, and the lower plate 19 has a collar. 19a is fitted in the leg hole 5a, and the grounding auxiliary member 16 electrically connects the vending machine body 1 and the fixture 5 to each other.

First, when installing the vending machine, the installation table 3 having the installation surface 3a and the anchor bolt hole 3b is made in advance from concrete. When the vending machine is installed on the installation table 3, the grounding auxiliary member 16 shown in FIG. 3 is inserted into one leg 2 of the vending machine body 1 as shown in FIG. The leg holes 5a are inserted, and further, the bolt holes 5b of the fixing fitting 5 are positioned and temporarily placed so as to overlap the anchor bolt holes 3b of the installation base 3.

Next, the anchor bolt 6 having the sleeve 7 inserted thereinto is inserted into the mounting surface 3a of the mounting base 3 from the bolt hole 5b of the fixing metal fitting 5, and the flat washer 8 and the spring washer 9 are attached to the screw portion 6a of the anchor bolt 6. Insert the nut 10 and gradually tighten the nut 10. When the nut 10 is tightened, the hem of the sleeve 7 is pulled upward by the taper portion 6b of the anchor bolt 6 with the fixing bracket 5 as a fulcrum, and is brought into close contact with the anchor bolt hole 3b, and the fixing bracket 5 is inserted through the anchor bolt 6. Is fixed to the installation table 3.

On the other hand, when the leg 2 is fitted into the leg hole 5a of the fixing member 5 and the vending machine body 1 tries to incline in the falling direction, the peripheral edge of the leg hole 5a prevents the lower part of the leg 2 from inclining. In this case, the bottom of the vending machine body 1 and the leg holes 5 of the fixing bracket 5
The electrically conductive state is maintained with respect to a by the auxiliary member 16 for grounding. As a result, even if the vending machine suffers insulation deterioration or insulation breakdown, the leakage current is as shown by the broken line in FIG. 2, the vending machine body 1, the grounding auxiliary member 16, the fixing bracket 5, the anchor bolt 6, and the ground 4. The electric shock is prevented by operating the earth leakage breaker of the vending machine.

As described above, according to the first embodiment of the present invention, the anchor bolt 6 having the grounding function with the grounding auxiliary member 16 interposed between the leg 2 and the tip protruding when the installation work is carried out is the ground 4. Since it will be buried in, earth grounding work will be done together. Therefore, it is possible to easily carry out the earth grounding work, and it is possible to eliminate the situation that the earth grounding is not performed due to the trouble.

FIG. 4 shows a second embodiment of the present invention. In the figure, legs 2 provided on the vending machine body 1
In the same manner as described in the conventional example, the lower end of the leg 2 abuts on the installation surface 3a of the installation base 3 by fitting in the leg hole 5a of the fixing metal 5, and the fixing metal 5 is further attached to the tip leg 5c of the end portion. , 5d are in contact with the installation surface 3a. Bolt hole 5b of fixing bracket 5
The projection 6c at the tip of the sleeve 7 has a grounding function, and the anchor bolt 6 having the tapered portion 6b on the body is inserted into the anchor bolt hole 3b formed in the installation base 3 and driven into the ground 4. Has been.

Then, one end 20a of the ground connecting wire 20 is connected to the screw portion 6a provided at the rear end of the anchor bolt 6, and is tightened by the nut 10 via the flat washer 8 and the spring washer 9. Further, the other end 20b of the ground connection wire 20 is connected to the back plate 1a of the vending machine body 1.
Is connected to a screw hole (not shown) provided in the.

With the above construction, when the vending machine is tilted, the leg 2 is prevented from tilting at the end edge of the leg hole 5a of the fixing member 5, and the fall is prevented. Even if the vending machine suffers insulation deterioration or insulation breakdown, a leakage current flows to the ground 4 via the vending machine body 1, the ground connecting wire 20, and the anchor bolt 6 to activate the earth leakage breaker.

As described above, according to the second embodiment of the present invention, the anchor bolt 6 having a grounding function with the tip protruding is provided.
Since the ground connecting wire 20 connected to the anchor bolt 6 is buried in the ground 4 and is connected to the vending machine main body 1 by the ground screw 21, if the vending machine is installed, the earth grounding work can be performed together. It has been done. Therefore, it is solved that the earth grounding work is simply performed and the earth grounding is not performed due to trouble.

[0023]

As described above, according to the first aspect of the present invention, when the anchor bolt having the earth grounding function is driven into the ground at the time of installation, the outer casing of the main body is grounded to the ground, and is exclusively used. It is economical without the need for earth grounding work and is installed to prevent falls, but
It is possible to solve the problem that the earth is not grounded due to trouble.

Further, according to the invention of claim 2, by installing an anchor bolt having a grounding function at the time of installation and connecting the ground connecting wire to the outer casing of the main body, it is not necessary to carry out a dedicated grounding work. It is economical, and it is possible to eliminate the situation that the earth is not grounded for reasons such as trouble.

[Brief description of the drawings]

FIG. 1 is an external view showing a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of FIG.

FIG. 3 is an external view showing a grounding reinforcing member provided in FIG.

FIG. 4 is a sectional view of an essential part showing a second embodiment of the present invention.

FIG. 5 is a partial cross-sectional view showing a ground structure of a conventional vending machine.

[Explanation of symbols]

 1 Vending machine main body 2 Leg 3 Installation stand 3a Installation surface 3b Anchor bolt hole 3c Earth ground hole 4 Ground 5 Fixing bracket 5a Leg hole 5b Bolt hole 6 Anchor bolt 6a Screw part 6b Tapered part 6c Projection 7 Sleeve 8 Flat washer 9 Spring washer 10 Nut 16 Grounding auxiliary member 17 Upper plate 18 Coil spring 19 Lower plate 20 Ground connection wire 21 Ground screw

Claims (2)

[Claims] 1. A grounding structure of a vending machine for grounding an outer box of a main body to the ground, wherein grounding is provided between a fixing metal fitting for fixing a leg portion provided on the outer box of the main body to an installation surface and the leg portion. Auxiliary members intervene to electrically connect the outer casing of the main body and the fixing bracket, and at the same time, an anchor bolt is driven into the ground through the fixing bracket on the installation surface to have a grounding function. The earth structure of the vending machine, which is characterized by 2. A ground structure of a vending machine for grounding an outer box of a main body to the ground, and an anchor bolt is driven into the ground through a fixing bracket for fixing a leg portion provided on the outer box of the main body to an installation surface. On the other hand, a grounding structure for a vending machine, characterized in that the fixing metal fitting is connected to the outer casing of the main body by a grounding connecting wire to provide a grounding function.