JPH11150819A - Switchgear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a shutter in an open state at inspection, etc., and improve workability. SOLUTION: The through-hole of a partition plate 9 which has fixed contactors 8 on its rear side is opened and shut by a shutter 15, which is biased in a shut state by a spring 28. While the shutter 15 is in an open state, a lever 19 linked with the shutter 15 is retained with a locking metal fitting 34 to fix the shutter 15 in the opened state, and furthermore, the shutter operating pin 32 of a transferred apparatus 29 is pressed against the locking metal fitting 34 to stop accommodation of the transferred apparatus 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchgear having a shutter for opening and closing a through hole of a partition plate provided with a fixed contact at the rear.

[0002]

2. Description of the Related Art In a conventional switchgear of this type, a fixed contact is provided behind a through hole of a partition plate provided upright on a housing, and a shutter is provided on the front side of the partition plate so as to be movable up and down. A circuit breaker having a movable contact that comes into contact with and separates from the armature,
Mobile devices such as instrument transformers and lightning arresters are housed in the housing so that they can move back and forth.

When the mobile device is stored, the shutter is moved downward by a shutter operating pin of the mobile device against the spring to open the through hole, and the movable contact of the mobile device is passed through the through hole to the fixed contact. Contact.

[0004] In addition, at the time of work such as inspection of a switchgear, the moving equipment is pulled out, a person enters the housing, the shutter is moved downward, and the shutter is held down by hand or foot to fix the open state of the shutter, and work is performed. ing.

[0005]

In the case of the conventional switchgear, the shutter must be pressed by a person's hand or foot against a spring during inspection or the like, and the operation is very difficult in that state. However, there is a problem that workability is poor.

An object of the present invention is to provide a switchgear which keeps the above points in mind and improves the workability by fixing a shutter to an open state at the time of work such as inspection.

[0007]

In order to solve the above-mentioned problems, a switchgear according to the present invention is provided upright on a housing.
A vertical partition plate having a through-hole, a fixed contact provided behind the through-hole, a moving device housed in the housing so as to be able to move back and forth, and A movable contact that comes into contact with and separates from the fixed contact through a hole, and is provided on the front side of the partition plate so as to be vertically movable;
A shutter for opening and closing the through hole; a lever connected to the shutter; a spring for urging the shutter to the closed state; A shutter actuating pin that is pressed to move the shutter to the open position, is locked to the lever in the open state, fixes the open state, and
A lock hardware for contacting the shutter operation pin and preventing storage of the moving device.

Accordingly, the locking hardware is locked to the lever in the open state of the shutter, and the open state of the shutter is fixed, so that it is not necessary to press the shutter with hands or feet at the time of inspection or the like, and the housing is used. Workability can be improved.

Moreover, when the shutter is fixed in the open state, the shutter operating pin of the mobile device comes into contact with the lock hardware, so that the storage of the mobile device can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment will be described with reference to FIGS. First, in FIGS. 1 and 2, reference numeral 1 denotes a housing, 2 denotes a bottom plate of the housing 1, 3 denotes a bent plate formed on both sides of the bottom plate 2, and 4 denotes a longitudinal section L fixed to both sides of the bottom plate 2. The guide rails 5 have a U-shaped cross-section in the front-rear direction and are fixed in parallel to the inside of both guide rails 4.

Reference numeral 6 denotes a thin box having an open front surface, which stands upright at the rear end of the bottom plate 2. Reference numeral 7 denotes a mounting piece, which is formed on both sides of the opening on the front surface of the box 6. Reference numeral 8 denotes a fixed contact, and three fixed contacts are provided in the upper part and the lower part in the box 6 in the left-right direction.

Reference numeral 9 denotes a partition plate covering the front side of the box body 6;
Is a through hole, three of which are formed in the upper and lower portions of the partition plate 9 in the left-right direction, and each fixed contact 8 is located behind each of the through holes 10. Reference numerals 11 denote side plates formed on both sides of the partition plate 9 by bending rearward, and outwardly bent pieces 12 of the rear edge of the side plate 11 are joined to the mounting pieces 7 of the box 6. Reference numeral 13 denotes a support metal having an L-shaped cross section.
Are fixed to the upper and lower parts by bolts 14 and nuts.

Reference numeral 15 denotes a shutter, which is provided on the front side of the partition plate 9 so as to be vertically movable, and opens and closes each through hole 10. Reference numeral 16 denotes three through holes provided in the shutter 15, and at a position where the shutter 15 has moved downward,
Each of the through holes 16 is located in front of each of the through holes 10 below the partition plate 9 and is in an open state, and at a position where the shutter 15 is moved upward, each of the through holes 16 is in the upper and lower through holes. 10
, Each through-hole 10 is closed and closed. Reference numerals 17 denote side pieces formed on both sides of the shutter 15 by bending rearward.

Next, a moving mechanism of the shutter 15 will be described with reference to FIG. Reference numeral 18 denotes a first connecting rod, one end of which is connected to the upper and lower support members 13, and the other end of which is connected to the upper and lower parts of the side piece 17 of the shutter 15.

Reference numeral 19 denotes a lever in the front-rear direction.
And a rear portion 21 slightly inclined downward with respect to the front portion 20. The front portion 20 is rotatably supported on the outer surface of the guide rail 4, and an outer contact piece 22 is formed at the rear end. The contact piece 22 comes into contact with the upper edge of the bent plate 3 of the bottom plate 2 so as to be able to freely contact and separate therefrom.
23 is an L-shaped support fixed to the tip of the contact piece 22;
Reference numeral 4 denotes a second connecting rod, one end of which is connected to the lower first connecting rod 18, and the other end of which is connected to the support 23. Reference numeral 25 denotes a left and right connecting rod, both ends of which are connected to upper ends of the supports 23 on both sides. Reference numeral 26 denotes a lower locking rod implanted at the other end of the support 23.

Reference numeral 27 denotes an upper locking rod implanted above the partition plate 9, and 28 denotes a spring whose both ends are locked by upper and lower locking rods 26 and 27, and biases the support 23 upward. , The second connecting rod 2
4. The shutter 15 is moved upward by the first connecting rod 18, and each through hole 10 is closed.

Reference numeral 29 denotes a mobile device including, for example, a circuit breaker;
Numeral 0 is a wheel of the moving device 29, which is guided by the guide rail 4 and the suspension 5 so that the moving device 29 moves forward and backward on the bottom plate 2. Reference numeral 31 denotes a movable contact, and three movable contacts are provided on the upper and lower portions of the rear surface of the mobile device 29 in the left-right direction. Reference numeral 32 denotes a shutter operation pin protruding from a rear lower portion of the right side surface of the moving device 29. When the moving device 29 is stored, the shutter operation pin 32 slides on the lever 19.

Next, a lock mechanism for fixing the shutter 15 in the open state will be described with reference to FIG. 33 is a support shaft implanted on the outer surface of the rear part of the guide rail 4;
Is a lock metal whose lower part is rotatably supported by the support shaft 33, and 35 is a compression spring wound around the support shaft 33, and urges the lock metal 34 toward the guide rail 4. 36
Is a locking recess formed on the inner side surface of the lock hardware 34, and this locking mechanism is provided on both guide rails 4.

Next, the operation will be described. FIG. 3 shows a state in which the moving device 29 is housed in the housing 1. The shutter operating pin 32 of the moving device 29 presses both levers 19, and the shutter 15 is in the open state, that is, as shown in FIG. 15, each of the through holes 16 is located in front of each of the through holes 10 below the partition plate 9, and the upper edge of the shutter 15 is located below each of the through holes 10 in the upper portion. As shown in FIG. Each movable contact 31 at the lower part of 29 is in contact with each fixed contact 8 through each through hole 16 and each through hole 10 at the bottom, and each movable contact 31 at the top is contacted through each through hole 10 at the top.

Next, when the movable device 29 is pulled out of the storage state of FIG. 3, while the shutter operation pin 32 moves on the rear portion 21 of the lever 19, each movable contact 31 of the movable device 29 is From each through hole 10 and each through hole 16.

The shutter operating pin 32 is connected to the lever 1
3, the rear end of the lever 19 is moved upward by the spring 28, and the shutter 15 is moved via the support 23 and the connecting rods 24 and 18, as shown by the chain line in FIG. Moves upward, and the shutter 15 closes each through hole 10 of the partition plate 9.

Next, when the mobile device 29 is stored, the shutter operation pin 32 moves the front portion 20 of the lever 19 by the rearward movement of the mobile device 29, as opposed to the case where the mobile device 29 is pulled out. The lever 19 moves downward, and the shutter 15 moves downward against the spring 28 via the support 23 and the connecting rods 24 and 18, and the shutter 15 opens the through holes 10 of the partition plate 9. I do.

When the mobile device 29 is further moved rearward, each movable contact 31 of the mobile device 29 comes into contact with each fixed contact 8 of the housing 1 as shown by a solid line in FIG.

Next, when performing an operation such as an inspection, the moving device 29 is pulled out, and as shown by a chain line in FIG. 3, the lever 19 moves upward and the shutter 15 is in the closed state. As shown in FIG. 4, the lock hardware 34 is located in the horizontal direction. Then, the lever 19 is moved downward by pressing the lever 19 with the hand or foot, the shutter 15 is moved downward to the open state, and both the lock hardware 34 located in the horizontal direction are moved outward against the compression spring 35. Then, as shown in FIG. 5, it is rotated in the vertical direction, the locking recess 36 of the lock hardware 34 faces the lever 19, the lock hardware 33 is moved to the lever 19 side, and the lock hardware 34 is moved by the lock hardware 34. And the open state of the shutter 15 is fixed.

As described above, since the shutter 15 can be fixed in the open state by the lock hardware 34, workability in the housing 1 is improved.

When the shutter 15 is fixed in the open state, even if the moving device 29 is to be stored in the housing 1, the shutter operating pin 32 of the moving device 29 abuts on the lock hardware 34, and the moving device 29 is stored. Is blocked. In the above embodiment, the mobile device is a circuit breaker, but may be an instrument transformer, an arrester, or the like.

[0027]

Since the present invention is configured as described above, it has the following effects. The switchgear of the present invention opens and closes the through hole 10 of the partition plate 9 provided with the fixed contact 8 at the rear by the shutter 15 urged to the closed state by the spring 28.
In the open state of 5, since the lock hardware 34 is locked to the lever 19 connected to the shutter 15 and the open state of the shutter 15 is fixed, the hand or foot presses the shutter 15 during work such as inspection. There is no necessity, and workability in the housing can be improved. Moreover, the shutter 15
Is fixed to the open state, the shutter operation pin 32 of the mobile device 29 abuts on the lock hardware 34, so that the storage of the mobile device 29 can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a cutaway right side view of FIG. 1;

FIG. 4 is a perspective view showing a state in which a shutter operation pin of the moving device presses the lever of FIG. 1;

FIG. 5 is a perspective view showing a state where the lever of FIG. 1 is fixed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 8 Fixed contact 9 Partition plate 10 Through-hole 15 Shutter 19 Lever 29 Moving device 31 Movable contact 32 Shutter operation pin 34 Lock hardware

Claims (1)

[Claims] 1. A vertical partition plate provided upright on a housing and having a through hole formed therein, a fixed contact provided behind the through hole, and a mobile device housed in the housing so as to be movable back and forth. A movable contact that is provided in the moving device and that comes into contact with and separates from the fixed contact through the through hole; and a movable contact that is vertically movable at the front side of the partition plate to open and close the through hole. A shutter, a lever connected to the shutter, a spring for urging the shutter to the closed state, a position protruding from a side of the moving device, and pressing the lever to open the shutter in the open state. And a lock hardware that locks to the lever in the open state, fixes the open state, and prevents the storage of the moving device by contacting the shutter operation pin. Switch gear, wherein the door.