JPS5828386Y2 - electronic control unit - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an electronic control device.

For example, an electronic control device such as a sequencer has an electronic control section such as an operation section or an IJ rack mounted on the front of the main body, and electronic components connected to input/output terminals on the back of the device. Program circuit changes, adjustments, and maintenance are often required.

However, when inspecting the electronic control unit on the front or the electronic components in the back, the main unit cannot be opened without loosening and removing many screws from the front or rear panel of the main unit, which is extremely troublesome. .

In particular, when removing the rear panel, input/output terminals connected to external circuits are generally provided on the rear panel, so those connections must be disconnected, making assembly work after adjustment and inspection more difficult. .

In addition, the main body is often arranged and held in multiple stages on a rack, etc. Therefore, even if the sides and top and bottom of the main body are opened, there is not enough work space and the purpose is not easily achieved. have.

The purpose of this invention is to develop an electronic control device that can eliminate the above-mentioned drawbacks.

This idea consists of a box-shaped main body with a front opening to which electronic components connected to input/output terminals are attached at the back, and an arm having a hinge section at the front end on the opposing inner or outer surface of the main body in the front-rear direction. A front panel that holds an electronic control unit connected to the electronic component and a transparent protection panel that covers the front surface of the front panel are rotatably connected to the hinge portions of these arms. It is.

Therefore, by pulling out the arm and rotating the protection panel and front panel, you can open the front of the main unit. In particular, by pulling out the arm, you can expand the work space on the front of the main unit. Even if the depth of the electronic control unit attached to the front panel is large, the front panel can be rotated in the opening direction without interfering with the front opening of the main unit. In addition, the protection panel and the front panel are designed to be installed so that the electronic control unit and electronic components can be installed and removed, adjusted, inspected, etc. extremely easily while the input/output terminals and the electronic components remain connected. It is configured so that it is held by a hinge portion, thereby simplifying the holding structure.

An embodiment of this invention will be explained based on the drawings.

Reference numeral 1 denotes a box-shaped main body in which an enlarged part 3 is formed at the periphery of a front opening 2, and mounting parts 4 for attaching to a rack (not shown) are formed in the enlarged parts 3 on both sides.

An inner plate 5 is fixed to the opposing inner surfaces of the main body 1, as shown in FIGS. 4 and 5.

A bending piece 6 that bends inward is provided on the front edge of these inner plates 5.
is in great shape.

A pair of arms 9 each having a hinge part 8 with a hole 7 formed at the front end are provided on the opposing inner surfaces of the main body 1, that is, below the inner plate 5, and are held by a guide 10 and slidable in the front and rear directions. It is set in.

A transparent protection panel 11 having a size to be fitted into the front opening 2 is provided.

A hinge portion 13 having a support shaft 12 elastically projecting into the hole 7 of the hinge portion 8 is fixed to both sides of the lower edge of the protective panel 11 by screws 14 .

Furthermore, a front panel 16 having a large opening 15 formed in the center is provided.

On both sides of this front panel 16 are side pieces 17 that bend forward.
and bent pieces 18 that expand from these side pieces 17 to both sides.

Furthermore, a hinge piece 20 having a hole 19 is formed on both sides of the lower part of the front panel 16.

Thus, the support shaft 12 of the hinge portion 13 is connected to the hinge piece 20.
The protective panel 11 and the front panel 16 are held rotatably independently by being inserted into the hole 19 of the hinge part 8 and the hole 7 of the hinge part 8.

The front panel 16 is normally fixed from movement in the rotational direction by screwing screws 21, which are fastening members inserted into the bending pieces 18, into the bending pieces 6 on the main body 1 side. 9 is blocked.

A magnet 22 is fixed to the upper center of the front panel 16, and an iron piece 23 that is attracted by the magnet 22 is fixed to the protection panel 11 together with a handle 124 on the front side thereof.

Furthermore, a plurality of operation switches 25 are attached to the front surface of the front panel 16, and a large number of indicator lights 26 made of LEDs are arranged.

A matrix port 27 and a control board 28, which are electronic control units, are fixed to the back side of the front panel 16, respectively.

Matrix port 27 has no fu. A diode pin 29 for changing program settings is inserted.

A mounting plate 32 that connects and holds an output relay 30, which is an electronic component, and an input/output terminal 31 is screwed to the rear surface of the main body 1.

Although not shown, these output relays 30 and the control board 28 are connected by a loose lead wire or a PC board.

In such a configuration, the protective panel 11 is opened during normal use such as operating the operation switch 25 or replacing the diode 29.

Further, the operating status is monitored through the transparent protection panel 11.

When adjusting or inspecting the matrix port 27, control board 28, output relay, etc., remove the few screws 21 and pull the arm 9 forward.

At this time, the arm 9 is prevented from being pulled out by forming a stopper 9a in the rear part of the arm 9 that comes into contact with the bending piece 6 (FIG. 4).

By rotating the protection panel 11 and the front panel 16, the front surface of the main body 1 can be opened very easily.

In particular, since the front panel 16 and the protection panel 11 are held by the arm 9 that is pulled out, the work space is expanded by the amount of the drawer, and the front panel 16 is held by the side piece 17.
Although the depth dimension is thick because of the relationship, the upper rear edge does not interfere with the front opening 2.

Thereby, the front panel 16 can be fitted into the front opening 2 without any gaps, giving a good appearance and preventing dust from entering.

By opening the front surface of the main body 1 in this way, adjustments and inspections can be made very easily while the input/output terminals 31 and the external circuit and the input/output terminals 31 and the output relays 30 remain connected. I can do it.

Further, although the front panel 16 and the protection panel 11 rotate independently, they are held by a common hinge portion 8, so that the assembly structure can be simplified.

Although the front panel 16 and the protection panel 11 open upward, they may open sideways.

Further, as shown in FIG. 6, if a U-shaped notch 33 is formed in the hinge part 8 of the arm 9 and the hinge piece 20 of the front panel 16 to be rotatably engaged with the support shaft 12, the support shaft 12 can be moved internally. The assembly and disassembly work of the hinge joint can be simplified even in cases where the hinge joint is not retracted in the opposite direction.

In this case, the hinge part 8 supports the support shaft 12, and the hinge piece 20
is supported by the support shaft 12, it is preferable to form an upward U-shaped notch 33 in the hinge portion 8 and to form a downward U-shaped notch 33 in the hinge piece 20.

Furthermore, as shown in FIG. 7, the upward U-shaped notch 33 and the fulcrum hole 34 are formed in the hinge part 8 in a communicating manner in an L-shape, and the downward U-shaped notch 33 and the fulcrum hole 34 are formed in the hinge piece 20. L
It may be formed so as to be continuous with the character shape.

In this case, the U-shaped notch 33 is useful for inserting the support shaft 12, and the fulcrum hole 34 acts as a pivot point for the support shaft 12.

This makes it difficult for the fulcrum hole 34 and the support shaft 12 to come apart.

Further, the hinge portion provided at the tip of the arm 9 is not limited to a piece-shaped hinge portion, and for example, a hinge portion 13 fixed to the protection panel 11 may be used.

In this case, the same hinge pieces 20 may be formed on both sides of the protection panel 11.

Although the screws 21 are used as the fastening members, it is also possible to use a locking part or a locking pawl made of unevenness as a fastening member to elastically lock the front panel 16 to the front opening 2 of the main body 1. good.

Since this device is configured as described above, the front of the main body can be easily opened by pulling out the arm and rotating the front panel. Adjustment and inspection of electronic components and electronic control parts can be performed extremely easily while the terminals and electronic components are connected, and in particular, the front panel is held at the hinge of the arm that can be freely pulled out. This not only expands the work space on the front of the main unit, but also prevents them from interfering with the front opening of the main unit, even if the front panel and the electronic control unit held on it are large in depth. With this, the front panel can be fitted into the main body without any gaps, making it possible to prevent dust and improve the appearance.Moreover, since the protection panel and the front panel are attached to a common hinge part, ,
This has the effect of simplifying the mounting structure and the mounting work.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention: Fig. 1 is a front view, Fig. 2 is a vertical side view, Fig. 3 is a perspective view with the arm pulled out, and Fig. 4 is a protective panel on one side. FIG. 5 is a horizontal sectional view of FIG. 4, and FIG. 6 is a partially enlarged exploded perspective view showing a modification of the hinge part. , FIG. 7 is a partially enlarged perspective view of an arm and a front panel showing another modification. 1...Main body, 5...Inner plate (opposed inner surface of main body), 8...Hinge portion, 9...
...Arm, 11...Protection panel, 16...
...Front panel, 27...Matrix port (electronic control unit), 28...Control board (electronic control unit), 30...Output relay (electronic component), 31
...Input/output terminal.

Claims (1)

[Scope of utility model registration request] A box-shaped body with a front opening is provided with electronic components connected to input/output terminals attached to the back, and an arm having a hinge portion at the front end is attached to the opposing inner or outer surface of the body so as to be slidable in the front-back direction. and a front panel holding an electronic control unit connected to the electronic component and a transparent protection panel covering the front surface of the front panel are rotatably connected to the hinge portions of these arms. Electronic control unit.