JPH05182717A - Earth terminal retainer - Google Patents

Abstract

PURPOSE:To conduct surface and easily an earth for an alternating current power supply from an outside to a jack strip for retaining an earth terminal in an earth terminal retainer for an electric apparatus. CONSTITUTION:An earth terminal retainer contains a circuit for converting alternating current power source induced from an outside through an AC cord 1 having three cores including an earth line 2, into direct current, retains a conductive power supply box conductive to the earth of an AC cord 1 and a plural number of connectors 14, 15, and 16, and conductive jack strip 8 provided with an earth terminal 12 for patting an earth line 13 from an outside in connection is fastened with a screw 10 to be conductive. Thereby a small number of parts can carry out earthing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground terminal holding device which receives an AC current from an external AC power source and connects an external ground wire.

[0002]

2. Description of the Related Art In recent years, there is a strong demand for safety in electric equipment that takes in alternating current electricity so that even if a large amount of current flows, it can be surely discharged to the earth through a ground wire.

A conventional ground terminal holding device will be described below. As shown in FIG. 6, AC is supplied from an external AC power source.
A power supply box 3 that houses a circuit for converting AC electricity input by the cord 1 into DC electricity is connected to the earth line 2 so that electricity can be communicated.

The connectors 14, 15 and 16 are arranged on a jack plate 17, and the ground terminal 12 is held by the jack plate 17 and grounded to the earth through a ground wire 13.

The lead wire 18 has one end connected to the power supply box 3 with a screw 19 and the other end connected to the jack plate 17 with a screw 20 so as to be fixed.

When a large amount of current flows through the earth line 2,
It is grounded to the earth through the power supply box 3, the lead wire 18, the jack plate 17, the ground terminal 12 and the ground wire 13.

[0007]

However, although current flows through the lead wire 18 in the above-described conventional configuration, the power box 3 and the jack plate 17 are provided by the screws 19 and 20.
Since it is fixed to, it is difficult for the current to flow stably, and the number of parts is large.

The present invention solves the above-mentioned conventional problems, and provides a ground terminal holding device in which current stably flows from the power supply box to the jack plate and from the ground terminal to the earth, and the number of parts is reduced. The purpose is to

[0009]

In order to achieve this object, the earth terminal holding device of the present invention accommodates a circuit for taking in an external AC power source from a three-core AC cord including an earth line and converting it into a direct current. A conductive power supply case that is electrically connected to the ground of the AC cord, a plurality of connectors are arranged, and a conductive jack plate having a ground terminal for connecting an external ground wire is fixed with screws. It is configured to be conductive.

[0010]

In this structure, the electric current stably flows from the power supply box to the jack plate holding the ground terminal.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 to 5 showing an embodiment of the present invention, the same parts as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIGS. 1 to 4, electrical equipment 4
In the ground terminal holding device attached to the above, external AC electricity flows from the AC cord 1 to the printed circuit board 5 of the DC conversion circuit housed in the power supply box 3.

The power supply box 3 is fixed by a conductive jack plate 8 provided with a conductive connecting plate 6 and a screw 10 and is surely conducted.

As shown in FIG. 5, the copper foil portion 7 of the printed circuit board 5 includes a cut-and-raised portion 9 of the power supply box 3 and a solder 11.
Are connected and conducted.

With the earth terminal holding device constructed as described above, a large amount of current from the earth line 2 of the AC cord 1 passes through the printed board 5, the power supply box 3, the jack plate 8, the earth terminal 12 and the earth wire 13. It is possible to prevent the electric device 4 from being destroyed by flowing to the earth.

[0017]

As is apparent from the above description of the embodiments, the present invention accommodates a circuit for taking in an external AC power source from a three-core AC cord including an earth line and converting it into a direct current, and AC A conductive power supply case that is electrically connected to the ground of the cord, a plurality of connectors are arranged, and a conductive jack plate having a ground terminal for connecting an external ground wire is fixed with screws to make it conductive. Due to
It is possible to realize an excellent earth terminal holding device having a small number of parts and stable conductivity.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a ground terminal holding device according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing the inside of the ground terminal holding device with a part of the power supply box omitted.

FIG. 3 is a schematic perspective view of an electric device to which the ground terminal holding device is attached.

FIG. 4 is a block diagram showing an electric flow of the ground terminal holding device.

FIG. 5 is a schematic perspective view showing a state in which a printed circuit board is attached to a power supply box of the earth terminal holding device.

FIG. 6 is a schematic perspective view of a conventional ground terminal holding device.

[Explanation of symbols] 1 AC code 3 Power supply box 8 Jack plate 10 Screw 12 Ground terminal

Claims (1)

[Claims] 1. A conductive power supply box for accommodating a circuit for taking in an AC power source from the outside from a three-core AC cord including a ground line and converting the AC power source into a direct current, and electrically connecting to the ground of the AC cord. A ground terminal holding device in which a connector is provided and a conductive jack plate having a ground terminal for connecting an external ground wire is fixed by a screw so as to be conductive.