JPH0112481Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a drawer type and disconnector, and in particular, a drawer type with an interlock mechanism that locks the disconnector in a predetermined position by interlocking the movement of the disconnector with the switchboard. and disconnectors.

Drawer shapes and disconnectors having the above-mentioned type of interlock mechanism have conventionally been used, for example, in Figures 1 to 4.
It was configured as shown in the figure. Hereinafter, the conventional configuration and its problems will be explained using FIGS. 1 to 4.

In Fig. 1, generally indicated by 1 is a drawer-shaped structure that can be carried in and out of the disconnector chamber 3 in the switchboard 2 and is movable within the disconnector chamber 3. A fixed contact (not shown) of the disconnecting part bushing 6 connected to the power supply side bus 5 via the movable contact 4 and a fixed contact of the disconnecting part bushing 8 connected to the load side bus 7 (not shown) ) and can be freely connected. Note that 9 is a bus bar room. The drawer-shaped disconnector 1 has a disconnector 1 that is connected to the disconnector 1 according to the disconnection position and the connection position of the disconnector 1.
An interlock mechanism 12 is attached for locking the switch to an interlock plate 11 fixed on the floor plate 10 of the switchboard 2. As shown in FIG. 2, the interlock mechanism 12 includes an interlock plate 11 provided on the floor of the breaker chamber 3, and two holes 13,
4, an interlock pin (interlock rod) 15 extending in the vertical direction to be inserted into and removed from the interlock pin 15, a bullet 16 for pressing the interlock pin 15, a handle 17 for operating the interlock pin 15, and the front of the shear disconnector 1. It is comprised of a locking pin 20 and the like that movably engages with a vertical guide hole 19 provided in the face plate 18.

That is, the interlock pin 15 is supported by the front plate 18 of the shear breaker 1 so as to be able to move up and down, and there is a gap between the collar 21 provided on the upper part of the interlock pin 15 and the upper surface of the front plate 18. It is configured to be constantly pressed downward via a bullet-loaded bullet 16 such as a compression coil spring. The upper and lower ends of the interlock pin 15 protrude through holes (not shown) provided in the upper and lower support parts 18a and 18b of the front plate 18 so as to be vertically movable, and the lower protrusion 15a It is configured to be inserted into and removed from holes 13 and 14 provided in the plate 11. The holes 13 and 14 cooperate with the interlock pin 15 to open the sheath breaker 1.
When the interlock pin 15 engages with the hole 13, the shield disconnector 1 is locked in the disconnect position, and the interlock pin 15 engages with the hole 14. When connected, the breaker 1 is configured to be locked in the connected position. The handle 17 is fixed to the lower part of the interlock pin 15, and by moving the interlock pin 15 upward against the bullet 16 through the handle 17, the interlock pin 15 and the holes 13, 14 are connected. It is designed so that the engagement can be released. The locking pin 20
has a function of preventing rotation of the interlock pin 15 by working together with the guide hole 19, and
This is for regulating the operating stroke of the interlock pin 15, and as shown in FIG. 3, it is designed to be vertically guided along a guide hole 19 formed as a long hole in the vertical direction. In addition, what is shown by 22 is a handle portion fixed to the sheath cutter frame 1a.

In FIG. 1, the reference numeral 23 indicates the movement of the disconnector 1 in the disconnection position to the connection position,
A handle support bracket 24 is a handle support bracket 24 fixed to the main body of the switchboard 2, which is a handle for operating the shield disconnector 1 to move the shield disconnector 1 in the connection position to the disconnection position.
It is configured to be detachable from the That is, the fourth
As shown, the handle support bracket 24
A groove 26 is provided in the upper part of the blade breaker, which can be freely engaged with a connecting pin 25 provided on the shredder operating handle 23. By engaging and disengaging the connecting pin 25 from the groove 26, the blade breaker The operating handle 23 can be attached and detached with a so-called one-touch operation. Note that 26a indicates a head portion of the connecting pin 25 for regulating extraction. The shroud breaker operating handle 23 is configured to be able to be engaged with a pin 27 horizontally disposed on its side surface via a latch 29 having an engagement groove 28 that can be engaged and disengaged. It is rotatably supported by the sheath cutter frame 1a via a support pin 30. Note that 27a indicates the head portion of the pin 27 for restricting its removal.

According to the above configuration, the interlock pin 15 is moved upwardly against the ammunition 16, and the interlock pin 15 is moved upwardly in the front and back direction (left and right in FIG. By moving the sheath breaker 1 in the direction 1), the breaker 1 can be easily interlocked between the disconnection position and the connection position by the restoring action of the ammunition 16.

However, the above-mentioned conventional technology has drawbacks in its structure, and therefore has the following problems. That is, in the above conventional configuration, the interlock pin 15 is moved upward to open the hole 13 or 14.
In order to release the engagement with the shear disconnector 1 and move the sheath disconnector 1 in and out between the disconnection position and the connection position via the sheath disconnector operating handle 23, move the interlock pin 15 upward with one hand. At the same time, the driver had to operate the disconnector operating handle 23 with the other hand. For this reason, when the drawer type or disconnector 1 is large, it becomes extremely difficult to operate it, and in particular, because the operating force of the disconnector operating handle 23 cannot be secured sufficiently, the operator of the disconnector 1 The operability during loading and unloading was extremely poor. In addition, when the interlock pin 15 is moved upward, the interlock pin 15 is moved upward until it is completely disengaged from the hole 13 or 14, and while maintaining that state, the cutter 1 is moved in and out. If not, there is a risk that the interlock pin 15 may come into contact with the interlock plate 11 and be bent or damaged, so great care is required during the work, which reduces work efficiency and puts a lot of stress on the worker. It was something.

This invention was devised in view of the above-mentioned problems of the prior art, and it is possible to freely lock the interlock pin in the upper movement position when the interlock pin is moved upward, and to prevent the interlock pin from locking. The above-mentioned problems in the prior art have been solved by having a configuration in which the state can be released freely. Hereinafter, one embodiment of this invention will be described in detail using the drawings from FIG. 5 onwards. In the following description, the same members as those shown in FIGS. 1 to 4 are designated by the same reference numerals, and the description thereof will be omitted.

In FIG. 5, the reference numeral 31 controls the rotation of the interlock pin 15 in cooperation with the stop pin 20 of the interlock pin 15, which is provided to be vertically movable and rotatable around the axis. This locking hole 31 is a horizontal locking hole formed in the front plate 18 that forms a part of the shear cutter frame and communicates with the upper part of the guide hole 19.
Similarly, when the interlock pin 15 is moved upward, by slightly rotating the interlock pin 15, the rotation stop pin 20 is inserted into the locking hole 31.
The interlock pin 15 can be locked and held in the upward movement position.

A handle 17 for upward movement of the interlock pin 15 is provided with a handle 17 that works with a first cam plate 32 and a second cam plate 33 disposed on the interlock plate 11 to lock the locking hole 31. A locking release mechanism 34 for releasing the locking of the locking pin 20 locked to the
Comes with an attached configuration. The unlocking mechanism 34 includes a roller 35 that can freely engage with the first cam plate 32 and the second cam plate 33, a support shaft 36, a return spring 37, and the like. As shown in FIG. 7, the roller 35 is rotatably supported at the lower end of a support shaft 36 via a locking member 38 such as a snap spring. The support shaft 36 is inserted through a hole 39 provided in the handle 17 so as to be vertically movable, and a return spring 37 such as a compression coil spring is elastically mounted between the lower part of the handle 17 and the upper surface of the roller 35. There is. Note that 40 indicates a locking member such as a snap spring. The roller 35 moves the interlock pin 15 upward and locks the detent pin 2.
0 is configured so that when it is engaged with the locking hole 31, the lower surface of the interlock plate 11 is appropriately raised above the upper surface of the interlock plate 11. The first cam plate 32 and the second cam plate 32
The cam plate 33 is for automatically releasing the engagement between the locking pin 20 and the locking hole 31 when the drawer type or disconnector 1 is moved in and out.
32b, 33a, 33b and the roller 35 engage with each other, the interlock pin 15 is gradually rotated and the locking pin 20 and the locking hole 3 are rotated.
cam surface 32 so that the locking relationship with 1 can be released.
a, 32b, 33a, and 33b are formed appropriately.

In the above configuration, the operation of this invention will be explained. When carrying the drawer or disconnector 1 into the switchboard (see reference numeral 2 in FIG. 1) or the disconnector chamber 1, move the interlock pin 15 upward and insert the detent pin 20 into the guide hole 19. Locking hole 3 communicating with
Do this with it locked in position 1. Therefore, since the interlock pin 15 is locked and held in the upwardly moved state, the operator only has to push the cutter 1. When the sheath cutter 1 is gradually carried in and the roller 35 starts to engage with the cam surface 32a of the first cam plate 32, the roller 35 is moved along the inclined surface of the cam surface 32a, and accordingly , the handle 17, the interlock pin 15, and the detent pin 20 are rotated, and the detent pin 20 and the locking hole 3 are rotated.
1 is automatically released. In this released state, the interlock pin 15 moves downward to be pressed onto the interlock plate 11 by the restoring action of the upper bullet (see reference numeral 16 in FIG. 2). When the wire disconnector 1 is continued to be carried in in this released state, the interlock pin 15 penetrates into the hole 13 at the disconnection position (the position of the hole 13) due to the action of the upper bullet, and the interlock pin 15 and The interlock plates 11 are locked together. That is, the sheath breaker 1 is locked in the disconnection position.

When transporting the interlock pin 15 locked in the disconnection position to the connection position, the interlock pin 15 is moved upward via the handle 17 to release the interlock pin 15 from the hole 13, and the Rotate the interlock pin 15 and tighten the stop pin 20.
is locked in the locking hole 31. Then, in this state, the shroud breaker 1 is further pushed inward (towards the inside of the panel).
Of course, in this case as well, it is sufficient to simply press the button. When the roller 35 starts to engage with the cam surface 33a of the second cam plate 33 during the carrying-in process, the locking pin 20 and the locking hole 31 are connected to each other by the same action as in the case of the first cam plate 32. The lock is automatically released and the interlock pin 15 is moved downward by the action of the upper bullet 16. Then, when the loading operation is continued, the interlock pin 15 penetrates into the hole 14 at the connection position (the position of the hole 14) due to the pressing action of the upper bullet 16, and the interlock pin 15 and the interlock plate 11 are connected. are locked together. That is, the sheath breaker 1 is locked in the connected position.

When carrying out the disconnector 1 in the connected state to the disconnection position or to the outside of the panel, the carrying-out operation can be carried out by performing the same operation as the above-mentioned carrying-in operation. In this case, the cam surfaces 3 of the first and second cam plates 32 and 33
When 2a and 33a engage with the roller 35, the locked state between the detent pin 20 and the locking hole 31 can be released.

As mentioned above, according to this invention, the interlock pin can be locked and held in the upward movement position when the drawer type or disconnector is carried in and out, and the interlock pin can be automatically released. So,
Carrying in and out of the breaker can be carried out using both hands. Therefore, it is possible to smoothly carry in and out a relatively large shear cutter, and work efficiency and work safety can be greatly improved compared to conventional technology. It is economical because the interlock pin or interlock plate will not be bent or damaged during the process.

[Brief explanation of the drawing]

Figure 1 is a side cross-sectional view of a switchboard housing a conventional drawer type and disconnector, and Figures 2, 3, and 4 are partially enlarged views of the main parts of the conventional drawer type and disconnector. Explanatory drawings, FIG. 5 is a side sectional view of the main parts of the drawer shape and disconnector according to this invention, FIGS. 6 and 7 are explanatory views of the main parts of this invention, and FIG. It shows a plan view. 2...Switchboard, 13, 14...Hole, 15...Interlock pin, 17...
...Handle, 18...Shiya cutter frame, 19...
... Guide hole, 20 ... Detent pin, 31 ... Locking hole, 32, 33 ... Cam plate, 35 ... Roller.

Claims (1)

[Scope of utility model registration request] An interlock rod 15 extending in the vertical direction is supported on the shield breaker frame 18 so as to be vertically movable, and a detent pin 20 embedded in the interlock rod 15 is supported in the vertical direction. The lower end of the interlock rod 15 is connected to the holes 13 and 14 provided in the switchboard 2 so as to be movably engaged with the elongated hole 19, and the interlock rod 15 can be connected to the holes 13 and 14 provided in the switchboard 2 to insert and remove the disconnector and place the disconnector in a predetermined position. In a closed switchboard which is freely fixed to the
8 is provided with a horizontal locking hole 31 communicating with the upper part of the elongated hole 19, and the interlock rod 15 is provided rotatably around its axis, and the interlock rod 15 is moved upward. Detent pin 2
0 is locked in the locking hole 31, and a support shaft 36 extending vertically is supported by the handle 17 implanted in the interlock rod 15 so as to be vertically movable, and a roller 35 is provided at the bottom of the support shaft 36. At the same time, when the detent breaker 1 is moved while the detent pin 20 is engaged with the detent hole 31, it engages with the roller 35 and rotates the interlock rod 15, thereby locking the detent pin 20. A closed power distribution board characterized in that the power distribution board 2 is provided with a first cam 32 and a second cam 33 having cam surfaces 32a, 32b and 33a, 33b for releasing the engagement between the locking hole 31 and the locking hole 31.