JPS5843258Y2 - Printed board storage case - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a storage case for printed boards used in control equipment installed in conjunction with circuit breakers and switches.

To explain more specifically, the present invention is configured so that the surface plate of the storage case can be opened and closed in the vertical direction, making it easier to inspect printed boards and to insert or remove them. It is characterized by the following.

Control equipment is installed along with circuit breakers and switches, but
In storage cases for printed boards used in control equipment, it is often necessary to pull out the printed boards from the storage case.

However, if a device such as a setting device is attached to the surface plate fixedly provided on the surface (front) of the storage case, the direction in which the printed board is pulled out must be changed to the top, back, side, etc. Must be.

If this is not the case, the surface plate must be a movable plate that can be opened and closed in the left and right directions.

However, if the direction in which the printed boards are pulled out is the top or side, when the storage cases are stacked in multiple stacks, it is necessary to pull out the case in order to pull out the printed boards.

Furthermore, when pulling out toward the back, the number of connectors that can be pulled out of the case is limited.

Furthermore, when using a movable plate that opens and closes in the left-right direction, the vertical dimensions of the movable plate are smaller than in the left-right direction, which causes vertical sag in the movable plate, and when stacked in multiple stages, there is interference between the upper and lower cases when opening and closing. There is a problem that the hinge part is exposed to an unreasonable load.

A conventional example in the case of a movable plate that opens and closes in the left-right direction will be explained with reference to FIGS. 1 to 4. 1 is a box body, 2 is a door, and 3 is a control unit housed in multiple stacks within the box body 1. .

4 shown in FIG. 4 is the storage case main body of the control unit 3,
5 is the opening, 6 is a printed board inserted through the opening, and 7 is a small door for opening and closing the opening 6, one end of which is pivoted to the front edge of one side of the storage case body 4 with a hinge 8 so that it can be opened and closed laterally. has been done.

This small door 7 forms the surface plate described above, and a handle 9, a setting device 10, a meter 11, etc. are attached to this.

According to the above configuration, the small door 7 on the front surface can be opened and the printed circuit board 6 can be pulled out while the control unit 3 is housed in the panel, but as can be seen from the figure, the small door 7 can be opened vertically. Because the dimension in the direction is short and the width dimension is large, the fourth
There is a disadvantage that the left edge of the figure falls downward, lowering the product value, and there is a risk of damage due to excessive force being applied to the hinge 8. Furthermore, as mentioned above, the small door 7 that sag downwards is lowered. The disadvantage is that it interferes with the case and cannot be opened and closed smoothly.

The present invention improves the above-mentioned drawbacks, and the embodiments shown in FIGS. 5 to 9 will be described below.

The structure of the storage case body 4 and the insertion and removal of the printed board 6 from the front opening 5 are the same as in the conventional case, and a setting device 10 with a handle 9 is attached to the small door (i.e., the front plate) 7.
．． Although the provision of a meter 11 and the like is the same as in the conventional case, the mechanism for opening and closing the small door 7 is improved in the present invention.

To explain this further, the small door 7 opens and closes in the vertical direction as shown in FIGS.

That is, both sides of the flat end of the small door 7 are rotatably supported by the lower end of the movable plate 12.12.

The movable plates 12.12 are the side plates 4a of the storage case main body 4.
, 4 a, and is located inside rail 1 of printed board 6.
3 and is arranged so as to be pulled out in the drawer direction.

That is, the printed board rail 13 has a rail frame 13a, is disposed inside the top plate 4b and bottom plate 4C of the storage case body 4, and supports the upper and lower ends of a large number of printed boards 6.

Since the rails 13 further protrude from the printed boards 6 located at both ends of the plurality of printed boards, the projecting portions of the rails 13 are used to connect the printed boards located at both ends to the storage case. It is arranged between the side plates 4 a and 4 a of the main body 4 .

Furthermore, in order to restrict the movement of the movable plate 12 in the pull-out direction, a long hole 14 is punched out in the movable plate 12 in the pull-out direction, and the storage case 3 is inserted into the long hole 14.
A movement regulating pin 15 fixed to the side wall 4a of the housing is fitted.

Therefore, the range of movement of the movable plate 12 is restricted to the range where the pins 15 touch both ends of the elongated hole 14, and there is no fear that the movable plate 12 will be pulled out of the storage case body 4 unnecessarily.

Thus, the small door 7 is pivotally supported to the movable plate 12 via the support pin 16 so as to be able to open and close in the vertical direction.

In order to maintain the closed state of the small door 7, a leaf spring 18 having a retaining pin 17 on the side is provided inside the tip of the movable plate 12, and the engaging pin 17 is provided on the movable plate 12. It is about to be inserted through the hole 19 and protrude outward.

On the other hand, an L-shaped engagement fitting 20 is attached to both edges of the upper end of the small door 7, and an engagement pin 17 provided at the tip and side of the leaf spring 18 is inserted into the hole 21 provided in the engagement fitting 20. It is provided so that it can be fitted.

Incidentally, reference numeral 22 denotes attachment portions provided on both sides of the front edge of the storage case body 4.

Therefore, when the small door 7 is closed as shown in FIG. 5, the relationship between the retaining pin 17 and the engaging fitting 20 is as shown in FIG.
In this state, they engage with each other and the small door 7 rises upward to maintain the closed state.

Also, when opening the small door 7 by tilting it downwards as shown in FIG.
The upper part of the small door 7 becomes free, and the small door 7 can be opened by tilting it down using the support pin 16 as a fulcrum.

As described above, the present invention is configured so that the small door (front plate) can be opened in the vertical direction using a very simple mechanism, which eliminates the disadvantages of the conventional method of opening in the horizontal direction. Eliminates defects such as doors sagging.

Further, according to the present invention, when stacking printed board storage cases in multiple stages, the multi-stage stacking can be performed without a case pull-out mechanism.

Furthermore, by using the small door, it becomes possible to mount components such as a setting device on the same surface as the direction in which the printed board is pulled out.

Other benefits include being able to perform operational inspections from the same direction and reducing storage space.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the control equipment housing the control unit, Fig. 2 is a front view cut away, Fig. 3 is a cross-sectional view taken along line A-A in Fig. 2, and Fig. 4 is a conventional control. Perspective view of the unit,
5 to 9 show embodiments of the present invention, FIG. 5 is a perspective view of the control unit with the small door (front plate) closed, and FIG.
The figure is also a perspective view with the small door open, Figure 7 is a plan view showing the storage case broken away, Figures 8A and B are detailed views showing the engagement and disengagement relationship between the engagement pin and the engagement fittings, Figure 9 is Figure 7BB
It is a sectional view along a line. 1...Box body, 3...Control unit, 4
...Storage case body, 4a...Both sides walls, 5...Opening, 7...Small door, 12...
...Movable plate, 17...Engagement pin, 18...
...Plate spring, 19°21...Engagement hole.

Claims (1)

[Scope of utility model registration request] A box body 1 houses control units 3 in multiple stages, and the control unit 3 includes a storage case body 4 into which a printed board 6 is inserted through an opening 5 on the front surface, a surface plate for opening and closing the opening 5,
That is, in a control device having a small door 7, a movable plate 12.12 is provided on the inside of both side walls 4a, 4a of the storage case main body 4 so as to be able to be pulled out forward from the opening 5. At the bottom of the tip, attach support pins 1 to the bottom of both ends of the small door 7.
The movable plate 12 and the small door 7 are each provided with engagement holes 19 and 21 so that the holes coincide with each other when the small door 7 is vertically pulled up using the support pin 16 as a fulcrum.
A printed board storage case characterized in that a retaining pin 17 supported by a plate spring 18 on a movable plate 12 is provided in the engaging holes 19 and 21 so as to be removable.