JPS6345762Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a unit structure that can be easily installed in a switchboard.

The purpose of the present invention is to improve each unit structure in which electrical circuit components such as motor control circuits are configured as one unit in a switchboard, and the required number of units can be stacked vertically on the switchboard. . Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a partially cutaway front view showing an example of the unit structure of the present invention stacked and mounted on a switchboard. In the figure, 6 is the outer box of the power distribution board, 10
indicates the switchboard door, and U ₁ , U ₂ , U ₃ , ... indicate each unit component. In the unit structure U ₁ , 1A,
1B is the board of the unit structure and terminal blocks 5A, 5
Install B. 2 is a front plate that is attached to the substrates 1A and 1B. Electrical components 4A are attached to the front plate 2. The electrical components 4A include switches, operation switches, ammeters, indicator lamps, etc. that require operation monitoring from the front side. Reference numerals 7A and 7B are unit mounting members fixed to the switchboard 6, and the boards 1A and 1B of each unit component are mounted to these using mounting tools 8.

2 is a partially cutaway side view of the switchboard of FIG. 1; FIG. In the figure, the same parts as in FIG. 1 are given the same reference numerals. 3 is a rear plate attached to the boards 1A and 1B, and 4B is an electrical component attached to the rear plate 3. The electrical components 4B include an electromagnetic contactor, a phase advance capacitor, an auxiliary relay, etc., which do not normally require operation monitoring from the front side. Note that the roof, base, etc. of the switchboard are not shown.

FIG. 3 is an enlarged front view of the substrates 1A and 1B with the front plate 2 and rear plate 3 removed. Board 1
Since A and 1B are placed apart from each other with a space _G1 , the parts 4 attached to the rear panel 3 with the front panel 2 removed.
It is possible to approach B. Note that 9 indicates a screw hole for mounting the front plate 2.

4 and 5 are top and side views showing details of the unit structure of FIG. 1; FIG. In the figure,
It is shown that the front plate 2 is arranged so as to maintain a space G ₂ with respect to the substrates 1A and 1B. This results in
The electric wires W and W' can be led from the terminal blocks 5A and 5B to the back surface of the front plate 2 and the electrical component 4B of the rear plate 3 without being bent significantly. In addition, the electric wire W,
There is sufficient space even if W′ is bent significantly. The rear plate 3 is arranged so as to maintain a space G ₃ behind the front plate 2. This makes it possible to secure a space for mounting the electrical component 4B and for wiring. The electrical component 4B may be attached to the rear wall or side wall of the rear plate 3, or may be attached to a partition plate provided as shown in the figure. Connect power supply side electric wires, load side electric wires, control electric wires, etc. to the terminal blocks 5A and 5B.

The above configuration makes it easy to introduce and wire the power supplies W and W' from the terminal blocks 5A and 5B into the unit, and if the front electrical component 4A is of the surface wiring type, the space dimension G in Figure 3 ₄ above or below the front plate 2 (i.e., the front plate 2
The vertical dimension of the substrate is made smaller than that of the substrates 1A and 1B. ), it becomes easier to connect electric wires from the terminal blocks 5A, 5B to the electric component 4A, and there is no interference from other units arranged above and below.

As shown in Fig. 3, with the unit boards 1A and 1B fixed to the unit mounting materials 7A and 7B,
By removing it, the rear electrical components 4B can be easily inspected and maintenance becomes simple. To pull out a unit assembly for replacement or complete maintenance,
The mounting bracket 8 may be removed to free the space between the unit structure and the unit mounting materials 7A and 7B. A support member 10 as shown in FIG. 5 is preferably provided for drawer convenience and weight support. The support material 10 is
It can be rail-shaped or equipped with rollers as required.

When pulling out the above, it is necessary to remove the connecting wires from outside the unit that are connected to the terminal blocks 5A and 5B.
Since it is located on the front side, it is easy to access and remove.

In the present invention, since the electrical components 4A and 4B are arranged three-dimensionally, the vertical dimension of the unit structure can be reduced compared to a normal planar arrangement unit. Furthermore, in the conventional configuration, wiring and bending space for electric wires was required between the terminal block and the electrical components facing it, but in the present invention, the terminal block 5
Since A, 5B and the front plate 2 are arranged in a three-dimensional manner with a space _G2 , the above-mentioned space becomes unnecessary, and the lateral dimension of the unit structure can also be reduced.

The present invention is not limited to the above-described embodiments, and various modifications and alterations can be made without departing from the spirit of the invention as set forth in the claims of the utility model registration.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view showing a power distribution board in which one example of the unit structure of the present invention is stacked vertically, and Fig. 2 is a partially cutaway side view of the power distribution board shown in Fig. 1.
FIG. 3 is an enlarged front view of the board with the front plate and rear plate removed, and FIGS. 4 and 5 are top and side views showing details of the unit structure of FIG. 1. 1A, 1B... Board, 2... Front plate, 3... Rear plate, 4A, 4B... Electrical parts, 5A, 5B...
Terminal block, 7A, 7B... Unit mounting material for power distribution board, 8... Mounting tool, G ₁ , G ₂ , G ₃ ... Space.

Claims (1)

[Scope of utility model registration request] Boards of approximately the same shape are placed in symmetrical positions with a space between them, a front plate is installed in front of the board so as to close the space while keeping a space, and a rear board is installed behind the board with a space left. and a power distribution board configured such that electrical components are mounted on the front plate and rear face plate, respectively, a terminal block is provided on the board to form an electric circuit, and the board can be attached to a unit mounting material of the power distribution board using a mounting tool. unit construct.