JPS643301B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a closing operation mechanism for a cutter or disconnector, and in particular, to a closing operation mechanism having a latch for maintaining the closed state, the latch is securely closed during closing. This makes it possible to obtain a suitable engagement action.

[Prior art and its problems]

FIG. 1 shows an example of a conventional closing operation mechanism for a cutter. Here, 1 is frame 2 with bracket 3
The tripping coil 1A attached via the tripping coil 1A is the armature of the tripping coil 1, and the armature 1 is held in the retracted position when the breaker shown in this example is in the closing state.

4 is a tripping latch that is rotatable around a pin 5, and 6 is an engagement latch that is rotatable around a fixed pin 7 for maintaining the closed state. Furthermore,
The latch 6 is connected to the latch 4 via the crank 8, and the latch 6 and the cam lever 9 are connected to the crank 10.
are connected via. In such a closed state, the engaging end 6A of the latch 6 is locked by the locking pin 11 of the latch 4, and the other engaging end 6B connects the cam lever 9 and the crank 10. is maintained in contact with the pin 12 that is
This latch 6 prevents the cam lever 9 from being biased clockwise around the pivot shaft 13.

Reference numeral 14 indicates an operating lever rotatably mounted around the rotation shaft 13; 15 indicates a hook attached to the operating lever 14 via a pin 16; One end is locked.

On the other hand, numeral 19 is an operating shaft for operating opening and closing operations between contacts in a vacuum valve (not shown), and numeral 20 is a closing lever attached to the operating shaft 19. The closing lever 20 is connected to a closing link 22 by a pin 21, and a closing spring 23 is stretched between the closing link 22 and a bracket 3A provided on the frame 2. A biasing force is applied to the input link 22 to rotate it counterclockwise.

22A is a roller provided at the tip of the closing link 22. In such a closing state, the roller 22A maintains a state in which it is in contact with the cam 9A of the cam lever 9, and the cam lever 9 also contacts the pin 12 of the cam lever 9.
by being engaged with latch 6 via
The input link 22 is maintained in the state shown. Note that 22B is a locking pin provided on the closing link 22, and by pulling up the hook 15 during the closing operation described later, the hook-shaped engaging portion 15A of the hook 15 is engaged with this locking pin 22B. can be done.

Next, an explanation will be given of the operation of the thus configured closing operation mechanism for the shear cutter when the sheath is cut off with reference to FIG. Now, if the shearing is performed in FIG. 1, the armature 1A of the tripping coil 1 will protrude to the right and be in the position shown in FIG. 2.

Therefore, the tip of the latch 4 is flipped by this movement of the armature 1A, and the latch 4 is rotated around the pin 5 in a clockwise direction. By this rotation of the latch 4, the engaging end 6A of the latch 6 is released from the locking pin 11, and the other engaging end 6B is removed from the pin 12.

Therefore, the cam lever 9 is rotated in the clockwise direction, and this rotational movement causes the closing link 22 to release the energy stored in the operating shaft 19 from the not shown or broken portion while keeping its roller 22A in contact with the cam 9A. It is moved to the position shown in FIG. 2 by the spring force of the side spring, and by rotating the operating shaft 19 at this time, it is possible to perform shear cutting on the shear cut side.

Next, the closing operation will be explained with reference to FIGS. 3 and 4. If you want to perform the closing operation in the ON or OFF state as shown in Figure 2, press the operation lever 1.
Turn 4 clockwise. However, due to such rotational movement, the hook 15
is lifted and the hook 1 is lifted as shown in Figure 3.
When the engaging portion 15A of No. 5 is locked with the locking pin 22B provided on the closing link 22, the operation lever 14 is rotated counterclockwise again.

That is, by counterclockwise rotation of the operating lever 14, the closing link 22 engaged via the hook 15 is moved against the spring force of the spring 23 to move the closing link 22 to the pin 21.
When the roller 22A of the link 22 reaches the recess 9B of the cam lever 9 while rolling along the cam 9A, the crank 10 connected to the cam lever 9
The counterclockwise rotational movement of the latch 6 allows the engagement end 6B of the latch 6 to engage the pin 12.

Furthermore, this rotation of the latch 6 causes the tripping latch 4 to be rotated counterclockwise via the crank 8, and the engaging end 6A of the latch 6 is connected to the pin 11 as shown in FIG. It can be locked and thus the latch 4 can be held in the closing position.

However, in the conventional closing operation mechanism for a breaker configured as described above, during the second half of the closing operation, the tripping latch 4 rotates counterclockwise as the latch 6 rotates counterclockwise. However, at this time, if the rotation speed of the latch 4 is fast, the stopper part 4A of the latch 4 collides with the stopper part 6C of the latch 6, and there is a tendency for the latch 4 to rebound (the third (see figure).

For this purpose, the engaging end 6A of the latch 6 is connected to the pin 1.
This means that the closing operation was performed while the latch 6 and the pin 11 are not securely engaged.In addition to this condition, if vibrations of the closing spring 23 remain during closing, the engagement state between the latch 6 and the pin 11 may be reduced. comes off, and the engagement between the latch 6 and the cam lever 9 is released.

In other words, regardless of whether the closing operation is performed, there is a risk that the latch, which serves to maintain the closing state, may disengage and return to the closed or disconnected state as shown in FIG. There was a problem with the reliability of the charging operation.

[Purpose of the invention]

In view of these problems, the purpose of the present invention is to
It is an object of the present invention to provide an inexpensive closing operation mechanism for a disconnector that can be easily adjusted and guarantees a reliable closing operation.

[Key points of the invention]

That is, the present invention has a tripping latch that is linked to the tripping operation and an engagement latch that keeps the tripping latch in the closed state, and the closing operation rotates the tripping latch to the closed position. In the closing operation mechanism of the cutter and disconnector, which is configured to engage with the engagement latch, the tripping latch contacts the tripping latch immediately before it engages with the engagement latch during the closing operation, and the tripping latch is engaged with the engagement latch. The buffer member is provided with a buffer member that absorbs the biasing force of the rotational movement of the release latch, and the buffer member includes a weight that moves in a direction that absorbs the biasing force of the rotational movement of the release latch, and a weight that moves the weight in a direction that absorbs the urging force of the rotational movement of the release latch. It is characterized by comprising a spring biased in the direction of abutting against.

[Embodiments of the invention]

The present invention will be explained in detail below based on the drawings.

FIG. 5 shows an embodiment of the invention, where 1
01 is a tripping coil attached to frame 2, 10
Reference numeral 2 denotes a buffer member provided along and below the coil 101. The buffer member 102 has a guide groove 102A.
is provided, and the frame 2 is inserted into this guide groove 102A.
By fitting fixing pins 103 protruding from the sides, the buffer member 102 can be slid in the left-right direction in the figure.

104 is a buffer member 102 and a tripping coil 101
The buffer spring 105 is a weight attached to the buffer member 102 via the mounting screw 106.
By making it easy to put on and take off,
By replacing the weight with a weight of a different weight, it is possible to adjust the inertia force during the buffering operation, which will be described later.

Reference numeral 107 denotes a trip lever that is rotatable around a pin 108, and the end of the lever 107 maintains light contact with the armature 101A of the tripping coil 101 in the closed state shown in the figure, and when the coil 101 is tripped. , by protruding the armature 101A to the right in the figure, the triple lever 107
induces counterclockwise rotation.

Note that the charging operation mechanism other than those described above is the same as the example shown in FIG. Therefore, the fifth
Regarding the tripping/shrinking operation from the closing state as shown in the figure, except that the tripping operation of the coil 101 is transmitted to the tripping latch 4 through the rotating operation of the trip lever 107, This is the same as that explained using FIG. 1 and FIG. 2, and the explanation thereof will be omitted. FIG. 6 shows a disconnection state in which tripping is performed in this manner.

Next, the case of the closing operation will be explained with reference to FIG. Note that operations other than those related to the tripping latch 4 and tripping coil 101 during the closing operation are performed in the third mode.
This is the same as the conventional example explained using FIG. 4 and FIG.

In FIG. 7, the latch 4 indicated by a dashed line shows its position in the disconnected state. In such a state, the operating lever 14 shown in FIG. 6 is closed and rotated clockwise, rotated to the position shown in the example of FIG. 3, and then the operating lever 14 is turned back again. If latch 4 is rotated clockwise to the position shown by the solid line in FIG.
The counterclockwise rotation causes the stopper part 4A of the latch 4 to come into contact with the stopper part 6C of the latch 6.

That is, in the present invention, the position of the buffer member 102 is set so that the latch contacts the contact portion 102B at the tip of the buffer member 102 at such a rotational position of the latch 4. The position of the buffer member 102 indicated by the dashed line indicates such a set position, and after the latch 4 contacts the buffer member 102 at the contact point P, the buffer member 102 is moved through the buffer spring 104.
By the backward movement of the latch 02 to the left in the figure, the biasing force of the latch 4 at the time of collision can be absorbed, thereby suppressing the rebound movement of the latch 4.

Therefore, it is possible to prevent the engagement end 6A of the latch 6 from coming off the pin 11, thereby increasing the reliability of the closing operation. Furthermore, weight 1
By changing the weight of the buffer member 102
The buffering force can be easily adjusted.

〔Effect of the invention〕

As explained above, according to the present invention, the tripping latch is interlocked with the tripping operation of the tripping coil, and the engagement latch is engaged with the latch to maintain the closed state. In the operating mechanism of the disconnector, which is configured to turn the tripping latch during operation to turn the tripping latch into the closed state and engage the engaging latch to maintain the closed state, the tripping latch is engaged with the engaging latch. A buffer member is provided that is movable in the direction of abutting against the tripping latch and absorbing the biasing force of the rotation operation during the immediately preceding closing operation, so that the buffering member does not engage when the tripping latch engages with the engagement latch. Collision with the latch and rebounding action can be prevented, thereby ensuring reliable closing action.

Furthermore, by providing the cushioning member with a weight that can be easily replaced, the degree of cushioning can be adjusted as desired.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing an example of the closing operation mechanism of a conventional shingle breaker, Fig. 2 is a block diagram showing its shrunken state, and Fig. 3 is the state of the operating lever in the lowest position during the closing operation. FIG. 4 is a configuration diagram showing the closing spring energy storage state immediately before the closing operation is completed, FIG. 5 is a configuration diagram showing the closing state of the closing operation mechanism according to the present invention, and FIG. FIG. 7 is a diagram showing an example of the configuration of a buffer device provided in the input operation mechanism according to the present invention. 1... tripping coil, 1A... armature,
2...Frame, 3,3A...Bracket, 4...
...Tripping latch, 4A...Stopper part, 5,7
...Pin, 6...Engagement latch, 6A, 6B...Engagement end, 6C...Stopper part, 8, 10...Crank, 9...Cam lever, 9A...Cam, 9B...
Recess, 11, 12... Pin, 13... Rotation shaft, 1
4... Operating lever, 15... Hook, 15A... Engaging portion, 16... Pin, 17... Torsion coil spring, 18... Pin, 19... Operating shaft, 20... Closing lever, 21... Pin, 22...Input link, 2
2A...roller, 22B...locking pin, 101...
...Tripping coil, 101A...Armature, 1
02...Buffer member, 102A...Guide groove, 102
B...Abutting part, 103...Fixing pin, 104...
Buffer spring, 105... Weight, 106... Screw, 1
07...Tritupleba, 108...Pin, P...
contact.

Claims (1)

[Claims] 1 It has a tripping latch that is linked to the tripping operation and an engagement latch that keeps the tripping latch in the closed state, and the closing operation rotates the tripping latch to the closed state position. In the closing operation mechanism of the cutter and disconnector, the mechanism is configured such that the tripping latch contacts the tripping latch immediately before the tripping latch engages with the engaging latch during the closing operation. A buffer member is provided in contact therewith to absorb the biasing force of the rotational movement of the tripping latch, and the buffering member includes a weight and the weight that move in a direction to absorb the biasing force of the rotational movement of the tripping latch. A closing operation mechanism for a breaker, characterized by comprising a spring that urges a weight in a direction to abut a tripping latch.