JPS6011674Y2 - Control device containing printed circuit board - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a control device that houses a control unit and a printed circuit board connected to the control unit.

Figure 1 shows the configuration of a conventional device of this type, where 1 is a control box, 2 is a front door that can be opened and closed, 2a is a fulcrum shaft 3 is a rear door, 3a is a fulcrum shaft, and 4 houses a printed circuit board 5. 6 is a motherboard supported by the card frame 4 and has a connector 7 attached thereto; 8 is a guide plate that guides the printed circuit board 5 through a groove 8a when it is attached; 9 and 10 are supported by the front door 2 and the rear door 3; A power supply device is a control unit consisting of a plurality of electrical devices such as switches, transformers, capacitors, etc.

Note that the card frame 4 is fixed to the mounting bracket 1a of the control box 1.

With the above structure, the printed circuit board 5 can be connected to the connector 7 of the motherboard 6 by opening the front door 2.

Furthermore, by opening the rear door 3, wiring from the control units 9 and 10 can be connected to the connector 7.

In addition, test inspection, adjustment, and maintenance are performed on front door 2 and rear door 3.
Open it and do it.

In other words, it is necessary to install and remove the printed circuit board 5 from the front, connect the wiring from the control unit (9.10) from the rear, test, adjust and maintain it from both sides of the front layer, It is not possible to arrange devices and equipment, requires a large installation area, and has the disadvantage that testing and adjustment workability is poor.

FIG. 2 shows another conventional example, where the same reference numerals as in FIG. 1 indicate the same or corresponding parts, and lla and 11b are control box 1.
Auxiliary plate attached to the front door 2 side, 12 is the auxiliary plate 11
A is a hinge that rotatably supports one end of the card frame 4, and 13 is a connecting plate that connects the other end of the card frame 4 and the auxiliary plate 11b.

9.10 With the above structure, mounting and removal of the printed circuit board 5 can be done from the front by opening the front door 2, and the control unit is connected to the connector 7 of the motherboard 6.
To connect the wiring from the front door 2, open the front door 2, release the connection between the auxiliary plate 11b and the connecting plate 13, rotate clockwise as shown in FIG. 3, and perform the work from the right side.

Moreover, test adjustment and maintenance can be performed in the same state, and no special space for the work is required behind the rear door 3.

By the way, in the state shown in FIG. 3, the distance l between the motherboard 6 and the right side surface 1b of the control box 1 is not necessarily sufficient as a space for working, so the rotation angle θ of the front door 2 is set to 90 degrees. It is necessary to enlarge the work space by setting the front door 2 to the right side, but if there is a wall or equipment on the right side and the front door 2 cannot be rotated sufficiently, the work is difficult. This has the disadvantage that it requires extra space and increases the installation area, similar to the one shown in FIG.

This idea aims to improve the above-mentioned shortcomings of the conventional devices, and allows all operations such as mounting and removing printed circuit boards, wiring connections to the motherboard, testing, adjustment, and maintenance to be performed from the front. The present invention provides a control device that houses a printed circuit board and does not require extra work space at the rear or sides.

An embodiment of this invention will be described below with reference to FIGS. 4 to 8.

In the figure, the same reference numerals as in FIGS. 1 to 3 indicate the same or equivalent parts, and 14 is a card frame mounting plate to which the card frame 4 that vertically supports the printed circuit board 5 on the front door 2 is attached; Both sides of the front door 2
mounted on.

Further, the motherboard 6 is attached to the front door 2 side of the card frame 4 in parallel with the front door 2.

A board door 15 covers the front part of the motherboard 6 and is supported by the front door 2 with a hinge 16 so as to be openable and closable. A control unit 9 is mounted inside the board door 15.

Reference numeral 17 denotes a square hole for wiring formed in the card frame mounting plate 14 for wiring to the connector 7 of the motherboard 6, that is, a cutout large enough to expose the motherboard.

Reference numeral 18 indicates a control unit 10 and a motherboard 6 formed on the side of the card frame mounting plate 14 and mounted on the rear door 3.
Cable (not shown) connecting the terminal (not shown) of
This is the cable entry port for introducing the cable.

With the above structure, the printed circuit board 5 can be attached and removed by moving the front door 2 in the direction of the arrow θ as shown in FIG.
II Can be done from the left side by turning 90'.

Also, wiring from the control unit 9 to the connector 7 of the motherboard 6 can be done from the front by rotating the board door 15 approximately 90 degrees in the direction of the arrow with the front door 2 shown in FIG. 4 closed. With the wiring from the control unit 10 attached to the rear door 3 in the same state, lead the cable connected to the control unit 10 from the cable inlet 18, connect this cable to the terminal of the motherboard 6, and then connect it to the terminal of the motherboard 6. By connecting the terminal and the connector 7, this can be done from the front as well.

Further, test adjustment and maintenance can be performed for the motherboard 6 by opening the board door 15 in the state shown in FIG. 4, and for the printed circuit board 5 from the left side in the state shown in FIG.

In addition, in the above embodiment, the front door 2 and the board door 1
Although the rotating direction of 5 is counterclockwise in the figure, the same effect can be obtained by moving the fulcrum shaft 2a and the hinge 16 to the left and rotating clockwise.

Further, although the case where the control unit is attached to both the front door 2 and the rear door 3 is shown, the control unit 10 attached to the rear door 3 is not necessarily required.

As described above, with this invention, various operations such as mounting and removing printed circuit boards, wiring connections to the motherboard, testing, adjustment, and maintenance can all be performed from the front, eliminating unnecessary work at the rear and sides. There is no need to provide space, and the installation area can be reduced.

In addition, wiring connections to the motherboard, testing, adjustment,
Maintenance and other work can be done with only the board door open and the front door closed, so the position of the board is fixed and stable, making the work easier.

[Brief explanation of the drawing]

Figure 1 is a horizontal sectional view showing the configuration of a conventional example, Figures 2 and 3.
The figures show another conventional example, Fig. 2 is a horizontal sectional view, Fig. 3 is an explanatory diagram of operation, Figs. 5 is an explanatory view of the operation, FIG. 6 is a front view of the card frame mounting plate, FIG. 7 is a side view of FIG. 6, and FIG. 8 is a cross-sectional view taken along the line -■ in FIG. 6.

Claims (1)

[Scope of utility model registration request] In a control device that houses a control unit and a printed circuit board connected to the control unit in a box having a door that can be freely opened and closed, a motherboard that houses the printed circuit board and is equipped with a connector to which the printed circuit board is connected is provided. a guard frame provided therein; and a mounting plate for attaching the card frame to the openable/closable door, the motherboard being parallel to the door and with a space sufficient for arranging the control unit; a card frame mounting plate that supports the card frame within the box body with the motherboard facing forward and has a cutout large enough to expose the motherboard; and a card frame mounting plate that is supported parallel to the openable door and the motherboard. A control device housing a printed circuit board, comprising: a board door that covers the front part of the board and has the control unit mounted therein, and is supported to be openable and closable with respect to the door.