JPH0521922Y2 - - Google Patents

Description

[Detailed description of the invention] A. Industrial application field This invention automatically connects the secondary power source for operating the drawer-type or cut-out section with the switchboard main body via the secondary plug. The present invention relates to a closed switchboard having a structure in which:

B. Overview of the invention The present invention is equipped with a shield that can be carried in and out of the switchboard main body and into the disconnection chamber, and also has a shield and disconnection section that opens and closes the power bus and load bus within the switchboard main body, which is the primary power source. In a closed power distribution board that has a drawer-shaped cutout or a disconnector, and the secondary power for operating the cutout is supplied from the switchboard body via a secondary plug, the outer surface of the drawer-type or disconnector A connecting plug with a pair of guide holes is provided protruding from the wall, while a pair of guide pins is provided protruding from the partition wall that partitions the switchboard into a disconnection chamber and a busbar room. The receiving plug for the next current supply is attached so that it can slide freely and not come off the guide pin by urging it toward the tip of the guide pin, and it can be manually released to stop the receiving plug from moving at the test position of the drawer type or disconnector. By providing a stopper, this simple structure allows the drawer or disconnector to be automatically stopped at the testing position before it is brought into the primary power connection position.

C. Prior Art In closed switchboards with drawers and disconnectors, when transporting the drawers and disconnectors to the disconnector room, there is a method for manipulating the drawers and disconnectors. A test is conducted to check whether the control section of the machine is working properly.

In other words, as shown in FIG. 3, in the closed switchboard, a pair of disconnector bushings 19 to which the power bus 17 and the load bus 18 in the busbar chamber 27 are connected are attached to the bulkhead 1a, and the disconnector chamber 2
0, and has a drawer-shaped section and a control section (not shown) for operating the circuit and the section for opening and closing these primary power supply circuits. The disconnector 2 connects these disconnector bushings 19
It is now possible to connect to The aforementioned control unit is provided inside this drawer type and disconnector 2, but in order to operate it, the drawer type and disconnector 2
is adapted to receive a secondary current from a separate path (secondary plug) of the switchboard main body 1.

Conventionally, two sets of fixed contacts 21 projecting downward from the upper part of the drawer or disconnector chamber 20 of the switchboard main body 1 toward the drawer or disconnector 2 are used to prevent the drawer or disconnector 2 from being carried in. They are arranged in parallel along the direction. These fixed contacts 21 include, as shown in FIG.
In order to send out a large number of secondary currents, a large number of comb-like uneven grooves 22 are formed at the bottom, and a sliding conductor receiving part (not shown) is provided inside the grooves 22. On the other hand, a movable contact 23 is provided protruding from the drawer-shaped or cut-off portion 2, and the upper surface of the movable contact 23 is in sliding contact with the sliding conductor receiving portion of the fixed contact 21 for electrical connection. A large number of conductive members 24 are provided to protrude along the uneven grooves 22. After these fixed contacts 21 and movable contacts 23 are combined, in order to guide them directly toward the partition wall 1a, there is a
A pair of guide rails 25 are attached, and a sliding pin 26 that engages with these is protruded from the movable contact 23 side.

By the way, the fixed contacts 21 are arranged in parallel in two stages at the position shown by the two-dot chain line in FIG. This is to check whether it is working or not. (In the position indicated by the two-dot chain line, the secondary current is supplied from the fixed contact 21 on the left side in FIG. Perform the join. At that time, the movable contact 23 and the fixed contact 21 on the right side in FIG. 3 are combined.

D Problems to be solved by the invention However, when a drawer or disconnector is stopped at the test position and carried to the connection position after a test, it is difficult to stop the drawer or disconnector accurately at the test position. Otherwise, the position of the movable contact and the fixed contact may shift, and secondary current may no longer flow to the control unit, making it impossible to quickly test for a breakage. In other words, the drawer and disconnector had to be stopped while visually checking them at the test position, which was troublesome.

Therefore, the object of the present invention is to solve such problems and provide a closed switchboard that can reliably connect a secondary power source at a test position and automatically shut off a drawer or disconnector.

E. Means for solving the problem In order to achieve the above object, the closed switchboard according to the present invention is constructed as follows.

A connecting plug with a pair of guide holes bored in the side of the drawer or disconnector is drilled with the connecting plug facing forward, and the switchboard body can be penetrated into the guide holes. A pair of tapered guide pins are provided protrudingly. Receiving plugs are slidably attached to these guide pins, and the receiving plugs can be stopped at the tips of the guide pins to prevent them from falling off the guide pins.
Furthermore, the receiving plug is always biased toward the tip of the guide pin by a compression coil spring attached to the guide pin. A stopper is provided at the rear of the receiving plug to prevent the receiving plug from retreating when the connecting plug is connected, thereby connecting the connecting plug and the receiving plug, and at the same time, to prevent the drawer type or disconnector from being carried in. There is also an operating lever to release this.

F Function When the drawer or disconnector is brought into the switchboard to the disconnector chamber, the connection plug first penetrates the tapered guide pin. The connecting plug is then guided along the guide pin and automatically connects with the receiving plug. Since the receiving plug is prevented from retracting by the stopper, the connection plug and the receiving plug can be reliably connected by strongly pushing the drawer shape or the disconnector. This position is the test position for checking the operation of the control section. Then, when the stopper is released by the operating lever and the drawer or disconnector is pushed further, the connection plug and receiving plug move back together while remaining connected, and the drawer or disconnector is connected to the disconnector bushing. This makes it possible to control the opening and closing of the power bus, which is the primary power source, and the load bus.

G. Embodiment Hereinafter, the present invention will be explained in detail based on the embodiment of FIG. 1 and FIG. 2 showing the XX cross section thereof. In addition, this example is an improvement of the structure of the receiving plug on the switchboard main body side that sends secondary current to the drawer type or disconnector and the connecting plug on the drawer type or disconnector side in a conventional closed switchboard. , the same parts are given the same reference numerals and the description thereof will be omitted.

As shown in FIG. 1, which is a plan view of the connecting portion between the connecting plug and the receiving plug, a drawer type or disconnector 2 approaches and leaves the partition wall 1a of the switchboard main body 1 as indicated by the arrow in the figure.
A connection plug 4 is protruded from the side surface of the isolation member 1a through a strong tube body 3 containing a large number of control cables (not shown). A pair of tapered guide pins 5 are provided protruding from the partition wall 1a opposite to the connection plug 4. A receiving plug 6, which is connected to the switchboard main body 1 via a cable (not shown), is slidably attached to these guide pins 5. A compression coil spring 7 is attached along the guide pin 5 between the receiving plug 6 and the partition wall 1a.
The tapered front part of the tip of the guide pin 5 is made thicker with a slight step in the radial direction.
The receiving plug 6 is designed not to fall off from the tip of the guide pin 5. Furthermore, two guide holes 8 are bored in the connection plug 4 so that the guide pin 5 can penetrate therethrough.

On the other hand, immediately behind the receiving plug 6, a pair of L-shaped stoppers 9 are provided between the parallel guide pins 5 and parallel to the guide pins 5, and the bent portions of the central portions of these stoppers 9 are , is attached via a horizontal pin 11 to a support member 10 protruding from the partition wall 1a so as to be rotatable in the vertical direction. An operating lever 13 whose central portion is pivoted by a horizontal pin 12 is rotatably attached to the inner surface (not shown) of the disconnection chamber 20, and the tip of the operating lever 13 and the stopper 9 A horizontal rod 14 for interlocking these is attached to the proximal end of the rod via horizontal pins 15 and 16 at both ends thereof.

Next, the operation of this embodiment will be explained. First, when the drawer type disconnector 2 is brought close to the partition wall 1a so that the connection plug 4 and the receiving plug 6 face each other,
A tapered guide pin 5 penetrates a guide hole 8 of the connection plug 4. Subsequently, the connecting plug 4 is guided by the guide pin 5 and coupled to the receiving plug 6. At this time, since the receiving plug 6 is prevented from retreating by the stopper 9, the approach of the drawer type and the disconnector 2 to the partition wall 1a when the connecting plug 4 and the receiving plug 6 are connected is prevented. . This position P
is the test position for testing the drawer shape and disconnector 2.

When the test is completed, the receiving plug 6 can be moved back by pulling the operating lever 13 as shown by the arrow and lowering the tip of the stopper 9 from the horizontal position as shown by the two-dot chain line in the figure. If the drawer type or disconnector 2 is pushed forward in this state, the receiving plug 6 will retreat against the biasing force of the compression coil spring 7 while remaining connected to the connection plug 4, and the drawer type or disconnector 2 will move forward as described in the conventional example. As shown, it is connected to the disconnecting section bushing 19. This position Q is the connection position.

Incidentally, when the stopper 9 is released, the grounding device on the load bus side in the switchboard body must also be grounded, although this is not particularly shown.

Furthermore, when the drawer or disconnector 2 is carried out from the disconnector chamber 20, the receiving plug 6 returns to its original position by the biasing force of the compression coil spring 7.
The stopper 9 must be returned to its original state using the operating lever 13. However, this Stoppa 9 also
If a torsion coil spring (not shown) that engages the stopper 9 and the support member 10 is attached to the horizontal pin 11, automatic return is possible.

Incidentally, in this embodiment, the stopper 9 is rotated downward to release the prevention of the receiving plug 6 from retreating, but it is of course possible to turn the mounting structure upside down and rotate the stopper 9 upward. It is also possible to use a wire instead of the horizontal rod 14.

Further, the mounting position of the connection plug is not limited to the drawer type or the side of the disconnector, but may be on the top.

H. Effects of the invention As explained above, according to the invention, since the guide pin guides the connecting plug before it is connected to the receiving plug, the connection between the connecting plug and the receiving plug is automatically performed. And now it can be done reliably. This makes it possible to use commercially available male and female connectors in the joint portion between the connection plug and the receiving plug, and it also becomes possible to manufacture the connector at low cost. In addition, since the receiving plug is prevented from retracting at the test position, the drawer type and disconnector are forced to stop, and the test position can be automatically confirmed.
This makes it much more efficient to move on to the next task. Furthermore, since the stopper can be easily released, movement from the test position to the connection position can be performed smoothly.

[Brief explanation of the drawing]

1 and 2 relate to an embodiment of a closed power distribution board according to the present invention, and FIG. 1 is a plan view showing in particular the connection structure between the connecting plug and the receiving plug of the closed power distribution board;
Figure 2 is a view along the X-X arrow, and Figures 3 and 4 are
The figures relate to a conventional closed switchboard, where FIG. 3 is an internal structural diagram, and FIG. 4 is a structural conceptual diagram of a portion of a drawer type or disconnector that receives secondary current. 1...Switchboard main body, 2...Drawer type or disconnector, 4
... Connection plug, 5 ... Guide pin, 6 ... Reception plug, 8 ... Guide hole, 9 ... Stopper, 10
...Supporting member, 13...Operation lever.

Claims (1)

[Scope of Utility Model Registration Claim] It can be carried in and out of the switchboard main body or into the disconnection chamber, and is capable of switching on and off the high voltage current supplied to the load from the switchboard main body, and also has a secondary In a closed power distribution board that has a drawer type or disconnector equipped with a secondary plug that receives current from the switchboard main body, a connecting plug with a pair of guide holes drilled on the outer surface of the drawer type or disconnector is installed inside the power distribution board. A pair of tapered parallel guide pins into which the connecting plug can be penetrated are protruded from the partition wall, and these guide pins A receiving plug that can be stopped at the tip of the partition wall is slidably attached to these guide pins, and a stopper that can prevent the receiving plug from sliding toward the partition wall is provided between the receiving plug and the partition wall. 1. A closed switchboard, characterized in that the switchboard is rotatably fixed to a support member protruding from the switchboard, and an operating lever for operating the stopper is mounted on an inner surface of the shutoff chamber.