JPS5828388Y2 - 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 a matrix port attached to the front of the main body, and electronic components connected to input/output terminals attached to the back of the main body. Circuit changes, adjustments, and maintenance inspections are 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 surfaces of the main body are opened, there is not enough work space and the purpose cannot be achieved. are doing.

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, a front panel that holds an electronic control section connected to the electronic components, and a front panel that holds an electronic control section connected to the electronic components. A protective panel covering the front surface is provided, an arm having a hinge hole at the front end is provided on opposing surfaces of the main body so as to be slidable in the front and back direction, and a hinge piece having the hinge hole and facing on the inside of the arm is provided with the A support shaft is provided on both sides of the front panel, and support shafts are provided on both sides of the protection panel, and these support shafts are fitted into the hinge hole of the hinge piece and the hinge hole of the arm in order to be freely rotatable. A stopper for preventing swing of the arm is detachably attached to the end of the shaft, and the front panel is fixed to the main body by at least one fastening member.

Therefore, by removing at least one fastening member, pulling out the arm, and rotating the front panel and protective panel, the front of the main body can be opened. In particular, by pulling out the arm, the work space on the front of the main body can be opened. Even if the front panel and the electronic control unit attached to it are enlarged and have a large depth, the front panel can be rotated in the opening direction without interfering with the front opening of the main unit. The electronic control unit and electronic components can be installed and removed, adjusted, inspected, etc. extremely easily while connected to the circuit and between the input/output terminals and the electronic components. The structure is such that vibration can be prevented by a stopper and the arm, hinge piece, and support shaft can be prevented from falling off.

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 formed.

On the opposing inner surfaces of the main body 1, that is, on the lower side of the inner plate 5, a pair of arms 8 having a notched hinge hole 7 at the front end and a protrusion 9 at the rear end are supported by a guide 10 and are arranged in front and rear directions. It is provided so that it can be slid freely in the direction.

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

A support shaft 12 protruding into the hinge hole 7 is fixed to both sides of the lower end of the protective panel 11 with a holder 13 by screws 14 .

These support shafts 12 are formed with grooves 12b in which a retaining ring 12a serving as a stopper is resiliently and removably attached.

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.

Also, hinge holes 19 are provided on both sides of the lower part of this front panel 16.
A hinge piece 20 is formed.

Thus, the support shaft 12 is connected to the hinge hole 19 of the hinge piece 20.
By inserting the protective panel 11 and the front panel 16 into the hinge hole 7 of the arm 8, the protective panel 11 and the front panel 16 are held rotatably independently.

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. 8 is blocked.

A magnet 22 is fixed to the upper center of the front panel 16, and an iron piece 23 absorbed by the magnet 22 is fixed to the protection panel 11 together with a handle 24 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.

A diode pin 29 for changing program settings is inserted into the matrix port 27.

A mounting plate 32 that connects and holds an output relay 30 and an input/output terminal 31, which are electronic components, 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 protection panel 11 is opened during normal use such as operating the operation switch 25 or replacing the diode pin 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 8 forward.

At this time, the protruding piece 9 that comes into contact with the bending piece 6 on the rear part of the arm 8
By forming this, the arm 8 is prevented from being removed (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 8 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 relationship depth dimension is thick, 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.

In particular, when the arm 8 is pulled out, the arm 8 tends to swing from side to side.
There will be a stop to the removal.

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 hinged together on the same axis, 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, although the screws 21 are used as the fastening members, a locking portion made of unevenness or a locking claw may also be used as a fastening member to elastically lock the front panel 16 to the front opening 2 of the main body 1. .

Furthermore, although the retaining ring 12a is used as a stopper, a knock pin or a screw may also be used.

Since this device is configured as described above, the front of the main body can be easily opened by removing at least one fastening member, pulling out the arm, and rotating the front panel and the protection panel. This makes it extremely easy to adjust and inspect electronic components and electronic control units while maintaining connections between input/output terminals and external circuits, and between input/output terminals and electronic components. The front panel and protection panel are held at the tip of the arm that can be freely pulled out, which expands the work space on the front of the main unit, and allows for easy access even if the front panel and the electronic control section held by it are large in depth. It is possible to prevent the front panel from interfering with the front opening of the main body, and as a result, the front panel can be fitted into the main body without any gaps, making it possible to prevent dust and improve the appearance. By pulling out the arm, the arm tends to swing, but it is stopped by the stopper and can be prevented from being pulled out from the support shaft.

[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 partially enlarged exploded perspective view showing the rotary support structure of the front panel, and FIG. 5 is a horizontal sectional view of FIG. 4. 1... Main body, 5... Inner plate (opposite surfaces of the main body), 7... Hinge hole, 8...
・Arm, 11...Protection panel, 12...
...Spindle, 16...Front panel, 19...
...Hinge hole, 20...Hinge piece, 21...
... Screw (fixing member), 27 ... Matrix port (electronic control section), 28 ... Control board (electronic control section), 30 ... Output relay ( electronic parts)
, 31... Input/output terminal.

Claims (1)

[Scope of utility model registration request] A box-shaped body with a front opening to which electronic components connected to input/output terminals are attached at the back, a front panel that holds an electronic control unit connected to the electronic components, and a protection covering the front of this front panel. an arm having a hinge hole at the front end is provided on opposing surfaces of the main body so as to be slidable in the front and back direction, and hinge pieces having the hinge hole and facing on the inside of the arm are provided on both sides of the front panel. , and spindles are provided on both sides of the protection panel, and these spindles are fitted into the hinge hole of the hinge piece and the hinge hole of the arm so as to be rotatable sequentially, and the ends of the spindles are An electronic control device characterized in that a stopper for preventing swing of the arm is detachably attached to the front panel, and the front panel is fixed to the main body by at least one fastening member.