JPH022015Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is an automatic opening/closing fitting for desk-type, bench-type, control desk-type, and wall-mounted switchboards, specifically, the monitoring and control panel of these switchboards can be moved to the open position (maintenance and inspection) by simply moving the panel up and down. This invention relates to automatic opening/closing fittings that can be fixed in position (position) and released.

The switchboard includes a desk-type switchboard 1 as shown in FIGS. 1 and 2, a bench-type switchboard 2, a control desk-type switchboard 3, and a wall-mounted switchboard 4 as shown in FIGS. 3 to 5. Usually, these switchboards have a monitor and control panel 5 that can rotate around a hinge 7 attached to a frame 6, like the desk-type switchboard 1 shown in Fig. 2. It is designed to be opened by being rotated to an angle of 45 degrees, for example, by a handle or rotary handle 8.

The supervisory control panel 5 is equipped with control equipment such as operation switches, pushbutton switches, indicator lights, and gauges.When performing maintenance, inspection, or wiring changes, raise the supervisory control panel and open the back of the supervisory control panel. It must be possible to inspect and maintain the terminals of control operating equipment. The weight of the monitoring and control panel 5 is, for example, approximately 30 kg when the panel width is 1000 mm, and when the panel is raised and fixed at an opening angle of approximately 45° using the handle 8 of the monitoring and control panel, conventionally the monitoring and control panel 5 weighs approximately 30 kg. Two workers are required: one to lift the panel and the other to apply the lever to secure the panel; the panel is heavy, and applying the lever to secure it is dangerous work.

The present invention was developed to solve the above-mentioned problem. By attaching automatic opening/closing fittings to various switchboards and raising the monitoring and control panel to a predetermined opening angle, for example, 45 degrees, The panel can be automatically fixed at the open angle without having to use levers to fix the panel, and when the monitoring and control panel is unfixed and lowered to the closed position, the panel can be raised slightly to prevent The panel is automatically unfixed and can be lowered without removing the fixing lever.

Embodiments of the automatic opening/closing fitting for a switchboard according to the present invention will be described below with reference to FIGS. 6 and 7.

FIG. 6 shows the state when the monitoring and control panel 5 of the desk-type switchboard 1 is rotated about the hinge 7 and raised to an open position of about 45 degrees. The automatic opening/closing fitting has a fixing fitting 11, a lever 14, and a guide fitting 17, and is usually attached to the left and right inner sides of the frame 6 of the desk-type switchboard 1, and the one shown in Fig. 6 is attached to the left side. It is something.

First, reference numeral 11 denotes a fixing fitting, which is fixed to the frame 6 and has a cylindrical fixing boss 12 as a receiving part for locking a hook provided on a lever, which will be described next.
has been planted. 14 is a lever whose upper end is swingably supported by the monitoring and control panel 5 via a shaft 16, and engages with the fixed boss 12 when the monitoring and control panel 5 is rotated upward to a predetermined angle. It has a hook or recess at the lower end to support the panel 5 in the open and fixed position. Note that a through-hole 9 is bored through the upper surface of the frame 6 over a range in which the lever 14 swings. The fixing boss 12 of the above-mentioned fixing fitting 11, that is, the receiving part and the recessed part of the lever 14, can have various shapes other than the illustrated shape that are suitable for locking the lever.

Next, 17 is a guide metal fitting, and the fixing metal fitting 1
1 via a shaft 18, the tip of which is normally seated on a fixed boss 12, and a guide pin 15 is fixed below the recess of the lever 14. The guide pin 15 lifts the guide fitting 17 when the monitoring and control surface panel 5 is rotated to the open fixed position, allowing the recessed portion of the lever 14 to be locked to the fixing boss 12, and the monitoring and control surface panel 5 is rotated to the open and fixed position. When the guide metal fitting 17 is rotated upward from the fixed position, the guide metal fitting 17 is lifted from the lower surface and moved to the upper surface beyond the tip edge of the guide metal fitting 17, and then when the monitor control surface panel 5 is rotated downward, the guide metal fitting 17 is lifted from the lower surface and moved to the upper surface beyond the tip edge of the guide metal fitting 17. Lever 1 while engaging with the upper surface of 17
4 in a direction away from the fixed boss 12, the monitoring and control surface panel 5 can be lowered to the closed position. Note that reference numeral 13 is a stopper pin, which is installed on the fixing metal fitting 11 in order to limit the range in which the guide metal fitting 17 can rotate upward.

Next, the operation of the automatic opening/closing fitting will be explained with reference to FIGS. 8 and 9.

FIG. 8 shows the operation of the automatic opening/closing fitting when lifting the panel 5 from the closed position to the open position using the front-mounted handle or rotating handle 8 of the monitoring and control panel 5 when inspecting and maintaining the inside of the desk-type power distribution board. A~
It shows D.

A is a state in which the supervisory control panel 5 is closed and the lever 14 is in the lower position. The lever 14 is a shaft 16
is supported by the monitoring and control surface panel 5 via
It swings freely around the axis 16. When the monitoring and control panel 5 is lifted to an opening angle of about 47 degrees, the guide fitting 17 is lifted by the guide pin 15 of the lever 14. The contact between the lever 14 and the fixing boss 12 of the fixing fitting 11 changes from B to C. The guide fitting 17 can move between the fixed boss 12 and the stopper pin 13 about a shaft 18. When the lever 14 is in contact with the fixed boss 12 as shown in C, when the monitoring and control surface panel 5 is lowered a little, the circular concave portion of the lever 14 automatically enters into the fixed boss 12, and the monitoring and control surface panel 5 is in contact with the fixed boss 12 as shown in D.
is fixed at an opening angle of approximately 45°. Therefore, since the monitoring and control panel 5 is open, maintenance and inspection of the operation control instruments attached to the back of the panel can be carried out safely and easily.

Figure 9 shows operation A of the automatic opening/closing fitting when closing the monitoring and control panel 5 from the open position.
~F is shown.

When closing the monitoring and control panel 5, if you lift the panel slightly (approximately 2 to 5 degrees), lever 1 will close.
4. The relative positions of the fixed boss 12 and the guide fitting 17 shift sequentially as A, B, C, D, and E.
That is, when the monitoring and control panel 5 is first lifted up about 2 degrees, the guide fitting 17 is lifted by the guide pin 15 of the lever 14. In B, the guide fitting 17 is on the guide pin 15. If you raise it further up to about 5 degrees, it will look like C. That is, in C, guide metal fitting 1
The tip of 7 is in contact with the guide pin 15. The guide metal fitting 17 moves from above the guide pin 15 to below the guide pin 15 as shown in FIG. The guide fitting 17 contacts the fixed boss 12. That is, by lifting the supervisory control panel upward by approximately 5 degrees, the fixation of the supervisory control panel is automatically released.

When the monitoring control panel is lowered, the lever 14
slides on the guide fitting 17 in the direction of the arrow by the guide pin 15. When the panel 5 is further lowered, the lever 14 slides on the guide fitting 17 by the guide pin 15, and its ultimate position is E. After passing the extreme position, the lever 14 is released from the restraint of the guide fitting 17, contacts the fixed boss 12, and descends substantially vertically as the panel descends. The relative positions of the automatic opening/closing fittings when the monitoring and control panel 5 is closed are shown in F. The range of movement of the lever 14 is limited by the through holes 9 in the left and right frames under the monitoring and control panel of the desk-type switchboard.

To summarize the above-mentioned operation, first, when raising the monitoring and control panel 5 to the panel open fixed position, that is, the maintenance and inspection position, the rotation angle of the panel about the hinge is changed from 0° of the panel closed position. If you release your hand at 47 degrees, the panel will be fixed in the open position at 45 degrees, and then when you want to lower the panel 5 to the panel closed position, you can fix the panel by turning it from the open position of 45 degrees to 50 degrees. is released and the panel can be lowered to the closed position of 0°.

As mentioned above, since there is no need to operate the panel fixing lever by only moving the monitoring and control panel 5 up and down, a single worker can move the panel at the maintenance and inspection position (panel opening angle of about 45 degrees). Fixing and releasing can be done automatically, safely and easily, resulting in significant labor savings.

In this embodiment, a desk-type power distribution board is illustrated, but the automatic opening/closing fitting according to the present invention can be installed not only in a desk-type, but also in a bench-type, control desk-type, and wall-mounted power distribution board when the monitoring and control panel is opened and closed vertically. Can be done.

Since the automatic opening/closing device according to the present invention is configured as described above, when changing the wiring or maintaining the control equipment installed on the monitoring and control panel of desk type, bench type, control desk type, and wall-mounted switchboards, By simply moving the monitoring control panel up and down, the automatic opening/closing fittings can automatically fix or release the panel in the open position, so only one operator is required, and the device is simple and safe and easy. This allows for significant labor savings.

[Brief explanation of the drawing]

Figure 1 is a front view of the desk-type switchboard, Figure 2 is the side view of Figure 1, Figure 3 is a side view of the bench-type switchboard, Figure 4 is a side view of the control desk-type switchboard, and Figure 5 is a wall-mounted switchboard. Figure 6 is a side view of the automatic opening/closing fittings and their surroundings when the monitoring and control panel of the desk type distribution board is raised to the open position. Figure 7 is a plan view of the automatic opening/closing fittings shown in Figure 6. , Fig. 8 is an operation diagram showing the state in which the monitor and control panel is raised to the open position, from the A-down state to the D-up state via B and C, and Fig. 9 is an operation diagram when the monitor and control panel is lowered to the closed position. From the top of A, B, C, D,
FIG. 3 is an operation diagram showing a state in which the state has descended from F through E. 1... desk type power distribution board, 2... bench type power distribution board, 3... control desk type power distribution board, 4...
Wall-mounted power distribution board, 5... Monitoring control panel, 6...
Frame, 11...Fixing bracket, 12...Fixing boss, 13...Stopper pin, 14...Lever, 1
5... Guide pin, 17... Guide metal fittings.

Claims (1)

[Scope of utility model registration request] In a desk-type, bench-type, control desk-type, or wall-mounted power distribution board in which a monitoring and control panel is rotatably mounted on a frame, the fixing fittings fixed to the frame and the upper end swing to the monitoring and control panel. The monitoring and control surface panel is freely supported and has a hook portion at its lower end that is latched to a receiving portion provided on the fixing fitting when the monitoring and control surface panel is rotated upward at a predetermined angle, and the panel is placed in an open and fixed position. The lever has a lever adapted to be supported, and a guide metal fitting that is rotatably supported by the fixing metal fitting and whose tip end is normally seated on the receiving part, A guide pin is fixed to the lower part, and when the monitoring and control surface panel is rotated to the open fixed position, the guide pin lifts the guide fitting so that the hook part of the lever is latched to the receiving part. When the monitoring and control surface panel is rotated upward from the open fixed position, the guide fitting is lifted from the bottom surface and moved to the top surface beyond the tip edge of the guide fitting, and then the monitoring and control surface panel is rotated upward from the open fixed position. When rotated downward, the lever is engaged with the upper surface of the guide fitting and rotated in a direction away from the receiving portion, thereby lowering the monitoring and control surface panel to the closed position. Features automatic opening/closing fittings for switchboards.