JPS6130485B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a closed switchboard, and more particularly to a fixing structure for storage equipment.

[Technical background of the invention and its problems]

In conventional closed switchboards, as shown in Fig. 1, nuts 6 are fixed to the rear wall of the box 1, and male screws 5 provided on the side of the housing equipment (for example, the circuit breaker 2) are manually or manually inserted into the circuit breaker 2 side. There is one in which an electric motor is screwed into a nut 6 and connected through main circuit parts 3 and 4. In this case, the positioning of the disconnection/connection position of the circuit breaker 2 is as follows:
This is done by turning the electric motor on and off using a position switch (not shown). In addition, the circuit breaker 2 is connected to the nut 6 of the male screw 5.
It is fixed by screwing into.

However, such a fixed structure of the circuit breaker 2 has the following problems.

(1) If a large external force is applied due to an earthquake, etc., the male screw 5 etc. will be damaged.

(2) Similarly, in the event of an earthquake, etc., the main body of the circuit breaker 2 and the automatic coupling parts 3 and 4 are damaged.

(3) When a large external force is applied to the disconnection, circuit breaker 2 moves.

[Purpose of the invention]

An object of the present invention is to obtain a closed power distribution board in which housed electrical equipment is not moved even in the event of an earthquake, and connection parts and fixed parts are not damaged.

[Embodiments of the invention]

The present invention will be described below with reference to an illustrative embodiment.

In FIGS. 2 to 8, a pair of bosses 11 are fixed on both sides of the back of the floor surface of the storage chamber of the box holder 1, and a clamp 12 is rotatably fixed on top of the bosses 11. Reference numeral 13 designates a fixed rod whose rear end is attached to the clamp 12 via a pin 14 as shown in FIG. 6, and extends from both sides of the circuit breaker 2 to the front side of the box body 1. The boss 11 has a hole 16 that fits into a pin 15 fixed under the rear end of the circuit breaker 2.
Furthermore, there are two horizontally protruding pins 17 at the bottom of both sides of the circuit breaker 2, and a groove 1 at the bottom of the fixing rod 13.
Four pins 8 are provided and are fitted with pins 17 at respective connection and disconnection positions of the circuit breaker 2. See Figure 2 connection diagram and Figure 4 disconnection diagram. Further, a bolt 21 is attached to the front end of the fixing rod 13, and a boss 22 with a female thread is fixed to the floor surface of the box body 1 below this bolt 21. Also, below this boss 22 is a switch 23 as shown in Fig. 7.
, and is in the operating position when the fixing rod 13 is placed horizontally and secured to the boss 22.

In the above configuration, when installing the circuit breaker 2, remove the bolt 21 of the fixing rod 13, raise it upward, and attach the front end to the metal fittings 31 attached to both inner surfaces of the box body 1 as shown in FIG.
put it on. When circuit breaker 2 is placed in the connected position, the second
As shown, the pin 15 fits into the hole 16 of the boss 11. At this time, if you lower the fixed rod 13, the groove 18
and the pin 17 of the circuit breaker 2 are fitted together. Furthermore, attach the front end of the fixing rod 13 to the boss 2 with a bolt 21 as shown in FIG.
2, the circuit breaker 2 can be firmly fixed to the box body 1. When the circuit breaker 2 is disconnected, another groove 18 of the fixing rod 13 fits into the pin 17, as shown in FIG. 4, so that the circuit breaker 2 can be similarly fixed.

Further, when the fixing rod 13 is fixed to the boss 11 at the connection/disconnection position of the circuit breaker 2, the switch 23 operates as shown in FIG. A relay 31 is connected in series to the contacts of this switch 23 as shown in FIG. 8, and its a contact X _a is connected to the closing circuit of the circuit breaker 2 and the lighting circuit of the lamp 32. Therefore, when the circuit breaker 2 is fixed by the fixing rod 13, the indicator light 32 lights up. Furthermore, when the fixed rod 13 is not fixed, the circuit breaker 2 does not enter, so it is safe.

In the above embodiment, the groove 18 is fixed to the fixed rod 13 side and the fitting pin 17 is fixed to the circuit breaker 2 side, but conversely, the fixed rod 13 side may be convex and the circuit breaker 2 side may be concave.

〔Effect of the invention〕

As described above, the present invention makes it possible to firmly fix the electrical equipment because the electrical equipment is engaged with each other by the uneven relationship with the fixed base pivoted on the panel frame in either the connected or disconnected position. This has the advantage that electrical equipment will not be shaken significantly by external shocks such as earthquakes, and damage to the main circuit disconnection section etc. can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a partial side view of a closed power distribution board housing a conventional draw-out type circuit breaker, FIG. 2 is a partial side view showing an embodiment of the closed power distribution board of the present invention, and FIG. 3 is A-A in FIG. 2. 4 is a partial side view of the closed switchboard of the present invention in a disconnected position, FIG. 5 is a partial side view of FIG. 4, FIG. 6 is an enlarged view of section B in FIG. 4, and FIG. 4 is an enlarged view of section C in FIG. 4, and FIG. 8 is an operating circuit diagram of the closed switchboard of the present invention. 1...Box body, 2...Electrical equipment, 13...Fixing rod, 1
7... Fitting member of electrical equipment main body, 18... Fitting portion of fixing rod, 23... Switch.

Claims (1)

[Scope of Claims] 1. In a closed power distribution board in which electrical equipment that connects and disconnects at a disconnection section in a box body is housed in a freely drawable manner, the box body has a rear end on both sides of the electrical equipment storage chamber, and a rear end behind the electrical equipment storage chamber. It is provided so as to be swingable about a fulcrum provided at the end, and the front end is fixed to the electrical equipment storage chamber, so that the side surface of the electrical equipment at the time of connection and disconnection is provided at the fitting part in the middle part. A closed power distribution board comprising: a fixing rod that fits with a fitting member to fix the electrical device to the box body.