JP2001274568A - Arrangement and installation box for electric apparatus and its connection method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an arrangement and installation box in which the sure continuity of a box body and an external power supply to a circuit part at the inside is ensured. SOLUTION: The arrangement and installation box is constituted by providing a metal box body 1. The box is constituted by providing an apparatus arrangement and installation plate 23 which comprises the circuit part 24 used to electrically connect the box body 1 to the external power supply and which is housed in the box body 1. The box is constituted by providing connectors 3 which are connected to connector connection parts 26 installed at the plate 23 and which connect the circuit part 24 and the box body 1 to the external power supply.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric equipment installation box used for fire alarm equipment and the like.

[0002]

2. Description of the Related Art Conventionally, there is an electric equipment installation box of this type shown in FIG. This is used for fire alarm equipment, and the metal box A, the box-shaped inner unit B housed in the box A, the box A and an external power source are all electrically connected. And a device arrangement board (not shown) having a circuit portion connected to the internal unit.

At the time of construction, the circuit portion of the device mounting board is electrically connected to the box A and grounded, and is also electrically connected to an external power supply so that power can be supplied.

[0004]

In the above-mentioned conventional electric equipment disposing box, depending on the installation state of the box A and the housing state of the inner unit in the box A, the wiring cable is screwed to the terminal screw. It may be difficult to perform electrical connection work during construction such as stopping, and it may be difficult to ensure reliable conduction between the box A and the external power supply and the circuit section of the internal unit B.

The present invention has been made in view of the above points, and an object of the present invention is to provide an electric device capable of ensuring reliable conduction between a box and an external power supply and a circuit section of an internal unit. An object of the present invention is to provide an arrangement box and a connection method thereof.

[0006]

According to a first aspect of the present invention, there is provided an electric device disposing box according to the first aspect, wherein both a metal box and the box and an external power supply are electrically connected. A circuit board to be connected and housed in a box, and the circuit section is electrically connected to the box and an external power supply by being connected to a connector connecting section provided on the board. And a connector to be connected.

According to a second aspect of the present invention, in the electrical equipment installation box according to the first aspect, the connector connection portion is provided on the equipment installation board for every two voltage lines from the external power supply. In this configuration, only one of the connectors is connected to both of the connector connecting portions.

According to a third aspect of the present invention, there is provided the electrical equipment installation box according to the second aspect, wherein both of the connector connecting portions are connected to the connector to connect the circuit section and the box body. The ground connection part provided so as to be used is shared.

According to a fourth aspect of the present invention, there is provided the electrical equipment installation box according to any one of the second and third aspects, wherein both of the connector connection portions are provided at one location, and The connection structure with the connector is point-symmetric.

According to a fifth aspect of the present invention, there is provided a method for connecting an electric equipment disposing box, comprising a metal box, and a circuit portion for electrically connecting the box and an external power supply together. Electrical equipment installation box, comprising: a device installation board to be connected; and a connector connected to the connector connection part provided on the equipment installation board to electrically connect the circuit unit, the box, and an external power supply. A method for connecting an electrical device arrangement box for electrically connecting the circuit portion, the box body, and the external power source by connecting the connector to a connector connection portion of the device arrangement plate. It is trying to connect.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electric equipment installation box according to a first embodiment of the present invention will be described below with reference to FIGS. This electric equipment installation box is used for fire alarm equipment.

Reference numeral 1 denotes a metal box, which is attached to the wall of the building in a grounded state, and has an inner unit 2 described later mounted therein. The box 1 may be embedded in the wall of a building.

Reference numeral 2 denotes an inner unit, which is provided with a door 22 openable and closable at the opening of a metal box 21 having one side opened. A device mounting plate 23 for mounting various devices (not shown) is mounted on the box 1.
The device arrangement board 23 has a printed circuit portion 24, for example, which is connected to the power supply circuit portion 24a which can be connected to an external power supply of AC100V and which can be connected to the box 1 for grounding. And a grounding circuit section 24b. The grounding circuit portion 24b is electrically connected to the inner bottom surface of the inner unit 2 by a connection member 25.

In addition, the equipment disposition board 23 is provided with a connector connecting portion 26 for connecting a connector 3 to be described later for each of two voltage lines, and the connector 3 is connected to the connector connecting portion 26 to supply power. Terminal unit 2 provided on the same plane as the connector connection unit 26 with the circuit unit 24a for use and the external power supply.
7 to supply power to various devices for fire notification and the like, and to connect the grounding circuit portion 24b and the box 1
Is connected to earth.

More specifically, the connector connection portion 26 has two power supply terminals 26a and one ground connection terminal (ground connection portion) 26b. The power supply terminal 26a is a terminal for connecting the power supply circuit unit 24a to an external power supply of 100 VAC by being connected to the connector 3, and includes a ground connection terminal (ground connection unit) 2.
Reference numeral 6b denotes a terminal connected to the connector 3 to connect the grounding circuit portion 24b to the box 1 for grounding.

Reference numeral 3 denotes a connector, which is connected to a ground lead wire 31 connected to the box 1 and has a connector connecting portion 2.
6, the ground lead 31 is connected to the ground terminal 26b of the connector connection portion 26. The connector 3 is connected to a power supply lead wire 32, and is connected to the connector connection portion 26 so that the two power supply terminals 26 a of the connector connection portion 26 are connected via the power supply lead wire 32. Connect between.

In such an electric equipment installation box, the work of connecting the connector 3 to the connector connection portion 26 provided on the equipment installation board 23 is performed by screwing a wiring cable to a terminal screw. Since it is relatively easy, the connector connection portion 26 of the device arrangement board 23 and the connector 3 are securely connected regardless of the installation state of the box 1 or the housing state of the inner unit 2 in the box 1. A box 1, an external power source and an internal unit 2
Reliable conduction with the circuit section 24 can be secured.

Next, a second embodiment of the present invention will be described below with reference to FIG. Note that members having substantially the same functions as those of the first embodiment are denoted by the same reference numerals, and only differences from the first embodiment will be described. The present embodiment is basically the same as the first embodiment, except that a connector connecting portion 26 for each of two voltage lines is provided integrally, and the connector connecting portion 26 is provided.
Is connected to only one connector 3.

The connector connecting portion 26 is provided with two power supply terminals 26a for every two voltage lines, and is provided with a single ground terminal 26b so as to be shared.

The connector 3 includes a power supply lead wire 32.
Are connected to the ground lead wire 31 connected to the box 1. The connector 3 is connected to the connector connection portion 26 to connect the two power supply terminals 26a of the connector connection portion 26 via the power supply lead wires 32 for every two voltage lines.

In such an electric equipment installation box, in addition to the effects of the first embodiment, even if a connector connection portion is provided on the equipment installation board 23 for every two voltage lines from an external power supply, Since there is only one connector 3, the connection work between the connector connection portion 26 and the connector 3 is completed at one place, and the labor for connection work between the connector connection portion 26 and the connector 3 can be reduced.

The grounding terminal provided at the connector connecting portion 26 for connecting the grounding circuit portion 24b to the box 1 so as to be connected to the connector 3 is shared, so that the grounding terminal is provided for each connector connecting portion. Need not be provided.

Next, a third embodiment of the present invention will be described below with reference to FIG. Note that members having substantially the same functions as those of the second embodiment are denoted by the same reference numerals, and only different points from the second embodiment will be described. The present embodiment is basically the same as the second embodiment, except that the connection structure between the connector connection part 26 and the connector 3 is point-symmetric.

The connector connecting portion 26 has a ground terminal 26b at the center and two power supply terminals 26 for connecting one of two voltage lines.
a are collectively arranged at one end, and two power supply terminals 26a for connecting the other voltage line are arranged at the other end, so that the arrangement of the five terminals is point-symmetric.

The connector 3 is also connected to the connector connecting portion 26.
According to the terminal arrangement of (1), the ground lead wire 31 is connected to the center, and the ground lead wire 31 for connecting one of the two voltage wires is connected to one end,
A power supply lead 32 for connecting the other voltage line is connected to the other end, and the arrangement of the three leads is point-symmetric.

In such an electric equipment installation box, in addition to the effect of the second embodiment, since the connection structure between the connector connecting portion 26 and the connector 3 is point-symmetric, the connection is point-symmetric. Connection is possible even if the structure is reversed by 180 degrees, so when connecting the connector 3 to the connector connection part, it is individually checked whether the positional relationship between the connector 3 and the connector connection part 26 is reversed by 180 degrees. Connection work can be performed without performing the connection work, and the connection work becomes easier.

Note that the first to third embodiments are
Each of them is used for fire alarm equipment, but is not limited to use for fire alarm equipment, and may be used, for example, for power distribution equipment.

In the first to third embodiments,
In any case, the inner device 2 is mounted inside the box 1 and the device mounting plate 23 is provided in the inner device 2 so that the device mounting plate 23 is housed in the box 1. The same effect can be obtained even if the device arrangement plate 23 is directly accommodated in the body 1.

[0029]

According to the first aspect of the present invention, the operation of connecting the connector and the connector provided on the equipment installation board is performed by screwing the wiring cable to the terminal screw. Since it is easy to compare, the connector connection part of the device arrangement board and the connector can be securely connected regardless of the installation state of the box or the housing state of the inner unit in the box,
Reliable conduction between the box and the external power supply and the circuit unit of the internal unit can be ensured.

According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, the electrical equipment installation box has a connector connecting portion for every two voltage lines from the external power supply on the equipment installation board. However, since only one connector is provided, only one connection operation between the connector connection portion and the connector is required, and the labor for connecting the connector connection portion and the connector can be reduced.

According to the third aspect of the present invention, in addition to the effect of the second aspect of the present invention, the connector box is connected to a connector so as to connect the circuit section to the box. Since the ground connection portions provided in the connector are shared, it is not necessary to provide a ground connection portion for each connector connection portion.

According to a fourth aspect of the present invention, in addition to the effect of the second or third aspect of the present invention, the electrical device installation box has a structure for connecting the two connector connection portions and the connectors. Because of the point symmetry, even if the connection structure that is symmetrical with respect to the point is reversed by 180 degrees, connection is possible. Therefore, when connecting a connector to both connector connection parts, the position of the connector and both connector connection parts is determined. The connection work can be performed without individually confirming whether the relationship is 180 degrees opposite, and the connection work becomes easier.

According to the connection method of the electric equipment installation box, the connection between the connector connection portion provided on the equipment installation board and the connector is performed by screwing the wiring cable to the terminal screw. Since it is relatively easy, it is possible to reliably connect the connector to the connector on the device arrangement board regardless of the installation state of the box or the housing state of the inner unit in the box. Also, reliable conduction between the external power supply and the circuit unit of the internal unit can be ensured.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing a device mounting board according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is a partial perspective view showing a device mounting board according to a second embodiment of the present invention.

FIG. 4 is a partial perspective view showing a device mounting board according to a third embodiment of the present invention.

FIG. 5 is a perspective view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box 23 Equipment arrangement board 24 Circuit part 26 Connector connection part 26b Ground connection terminal (ground connection part) 3 Connector

Claims (5)

[Claims] 1. A device box having a metal box, a circuit unit electrically connected between the box and an external power supply, and a device mounting plate housed in the box. An electrical equipment installation box, comprising: a connector that is electrically connected to the circuit unit, the box body, and an external power supply by being connected to the provided connector connection unit. 2. An external power source is connected to the device mounting board.
2. The electrical equipment installation box according to claim 1, wherein the connector connection portion is provided for each of the voltage lines, and the only one connector is connected to both of the connector connection portions. 3. The connector according to claim 2, wherein the two connector connection portions share a ground connection portion connected to the connector and provided to connect the circuit portion and the box. Electrical equipment distribution box. 4. The electric device according to claim 2, wherein the two connector connection portions are provided at one position, and a connection structure with the connector is point-symmetrical. Distribution box. 5. A device box having a metal box, a circuit unit electrically connected between the box and an external power source, and a device mounting plate housed in the box. A connector for electrically connecting the circuit unit to the box body and the external power supply by being connected to the provided connector connection unit; A method, wherein the circuit is electrically connected to the box and the external power source by connecting the connector to a connector connection portion of the device mounting board. Box connection method.