JPH08322116A - Pole mounted gas switch - Google Patents

Abstract

PURPOSE: To simplify the structure, which is resistant to vibration without erroneous operation by providing one operation starting point for the mechanical locking mechanism of an operating handle and the electric locking mechanism for operating a switch, and securely performing the operations of both locking mechanisms. CONSTITUTION: A plate spring 53, which is engaged with an engaging body 41 in a case 22 so that the spring is freely engaged and removed, is provided at a hooker shaft 43 in the case 22, which is rotated and energized in one direction. A drive body 46 for compressing, which is freely connected and separated in correspondence with the engagement and disengagement with an engaging body 41 of the plate spring 53, is fixed to an operating pin 58 of a switch 57 in the case 22. A lock lever, which is turned by the separation of the plate spring 53 from the engaging body 41, is fixed to the hooker shaft 43 at the outside of the case 22. A boss in contact with the turned lock lever is provided at an operating handle. A releasing pin 38, which releases the engagement of the plate spring 53 to the engaging body 41, is fixed to a pressure bellows 37, which is elongating by the decrease in gas pressure in the case 22. Thus, the electric locking and the mechanical. locking are performed at the same time, and the structure, which is strong in shockproof property without errorneous operation, is simply formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power-receiving or power-distributing device which cuts off the conduction of a switch operating coil and prevents the operating handle from rotating when the gas pressure in the case is reduced. Related to pole gas switches such as high voltage AC gas switches.

[0002]

2. Description of the Related Art A conventional pole gas switch has a structure shown in FIGS. 8 is a right side view of the section, FIG. 9 is a view taken along the line D, D in FIG. 8, FIG. 10 is a view taken along the line E, E in FIG. 8, and FIG. 11 is a view taken along the line F, F in FIG. It is a perspective view.

In these drawings, 1 is a case of a pole gas switch in which an insulating gas such as SF ₆ having a predetermined pressure is enclosed, and 2 is a pressure bellows whose base is located in a recess 3 in the case 1. Yes, it expands and contracts due to changes in the gas pressure in the case 1. Reference numeral 4 denotes a locking pin, one end of which is fixed to the tip of the bellows 2, and the other end of which is the base of the bellows 2 and the case 1.
8 is led out to the outside of the case 1, and the locking pin 4 moves in the left-right direction in FIG. 8 due to the expansion and contraction of the bellows 2. 5
Is a cover whose opening is attached to the case 1 on the outer periphery of the recess 3 via an O-ring 6, and 7 is a cover 5 which penetrates the cover 5.
It is a hacker shaft that is rotatably mounted on.

Reference numeral 8 denotes a spring wound around the hacker shaft 7 in the cover 5, and urges the hacker shaft 7 in the clockwise direction when viewed from the right side of FIG. Reference numeral 9 denotes a locking plate fixed to one end of the hacker shaft 7 in the cover 5, which is releasably locked to the other end of the locking pin 4 by a spring 8. 10 is a cover 5
A fan-shaped lock plate fixed to the other end of the outer mint shaft 7, 11 is a blind cover plate (shown by a chain line in FIG. 9) in which mounting pieces at both ends are attached to the outer surface of the case 1, and a central portion Is located outside the cover 5, and as shown in FIG.
0 is covered.

Reference numeral 12 is a leaf spring having a base fixed to the tip of the bellows 2, reference numeral 13 is a pressure contact member attached to the tip of the leaf spring 12, and reference numeral 14 is an attachment attached to the inner surface of the case 1 near the bellows 2. A body, 15 is a micro switch attached to the attachment body 14 by a screw 16, and when the micro switch 15 is turned on, a switch actuating coil (not shown) becomes conductive. Reference numeral 17 denotes an actuating piece of the micro switch 15. The actuating piece 17 contacts the press contact body 13, and the leaf spring 12 moves due to the expansion and contraction of the bellows 2, whereby the micro switch 15 is turned on and off via the press contact body 13 and the actuating piece 17. To do.

Reference numeral 18 denotes an operation shaft of a switch rotatably provided in the case 1 in the vicinity of the bellows 2 penetrating the case 1, 19 denotes an operation lever mounted on the operation shaft 18 in the case 1, and 20 denotes An operation handle mounted on the operation shaft 18 outside the case 1, and a boss 21 provided on the handle 20.

Next, the operation will be described. When the gas pressure in the case 1 is normal, the pressure bellows 2 is compressed by the gas pressure, the locking plate 9 is locked to the locking pin 4, and the hacker shaft 7
Is blocked from rotating. The lock plate 10 is shown in FIG.
As shown by the alternate long and short dash line, it is located inside the blind cover plate 11, and the operation handle 20 can be freely turned on and off.

On the other hand, when the bellows 2 is compressed by the normal gas pressure, the pressure contact body 13 presses the actuating piece 17 of the micro switch 15 via the leaf spring 12, and the micro switch 15
When is on, the switch operating coil is in the conductive state.

Next, when the handle 20 is turned off and the gas pressure in the case 1 is reduced, the bellows 2 expands due to the restoring force, and the locking pin 4 slightly moves inward of the case 1,
The locking plate 9 is disengaged from the locking pin 4, and the hacker shaft 7 is replaced by the spring 8
As a result, the lock plate 10 is rotated clockwise in FIG.
Rotates to the right and moves to the position shown by the two-dot chain line in FIG. 9, that is, outside the blind plate 11, and the lock plate 10 comes into contact with the boss 21 of the handle 20 in the cut state shown by the one-dot chain line in the figure. , The operation of turning the handle 20 on and off is blocked, and the handle 20
Mechanical locking of the.

On the other hand, the pressure contact member 13 formed by the expansion of the bellows 2
, The operating piece 17 of the microswitch 15 moves due to its elasticity, the microswitch 15 is turned off, the conduction of the switch operating coil is cut off, and the switch operating coil is electrically locked. Be seen.

Next, when the gas pressure inside the case 1 is lowered with the handle 20 in the inserted state, the lock plate 1 is the same as above.
0 comes into contact with the boss 21 (two-dot chain line in FIG. 9) of the handle 20 in the ON state, the operation of turning the handle 20 from ON to OFF is blocked, and the micro switch 15 is turned off to switch the switch operating coil. The electrical connection is cut off, and the switch operating coil is electrically locked.

[0012]

In the case of the conventional pole-mounted gas switch, the starting point of the mechanical lock mechanism of the handle 20, that is, the locking plate 9 of the hacker shaft 7 is disengaged from the moving locking pin 4. , The operating point of the rotation of the lock plate 10 and the operating point of the electrical lock mechanism of the switch operating coil, that is, the movement of the pressure contact body 13 of the locking pin 4, and the operating piece 17 of the microswitch 15 moves. Since the operation starting points for turning off the switch operating coil are independent operation starting points, it is difficult to coordinate the operation starting points.

Moreover, since the pressure bellows 2 gradually expands as the gas pressure in the case 1 decreases, the contact pressure of the contacts gradually decreases when the micro switch 15 is turned off, and the timing of turning off is unstable. Is.

Further, due to the gradual movement of the bellows 2 due to the decrease of the gas pressure in the case 1, the micro switch 15
In order to operate, the micro switch 15 that has a light load, that is, a small contact pressure, must be used, and the micro switch 15 is vulnerable to vibration and malfunctions occur.

Moreover, the mechanical lock mechanism of the handle 20, that is, the locking pin 4, the hacker shaft 7, the spring 8, and the locking plate 9 of the bellows 2 are provided outside the case 1, so that this portion is covered. Therefore, there is a problem that it is necessary to cover it airtightly.

In consideration of the above points, the present invention makes the operation starting points of the mechanical lock mechanism of the operating handle and the electric lock mechanism of the switch actuating coil one, and surely performs the operations of both lock mechanisms simultaneously. The purpose of the present invention is to provide a pole gas switch which is strong in vibration, has no malfunction, and has a simple structure.

[0017]

In order to solve the above-mentioned problems, the pole gas switch of the present invention comprises a pressure bellows 37 that expands and contracts according to changes in the gas pressure in the case 22, and a case 22.
The locking body 41 provided inside is urged to rotate in one direction,
A hacker shaft 43 penetrating the case 22, a switch 57 provided in the case 22 for making a switch operating coil conductive, and an operating pin 58 operating in a direction perpendicular to the axis of the hacker shaft 43; A leaf spring 53 fixed to the hacker shaft 43 in the case 22 and releasably locked to the locking body 41 and a leaf spring 53 fixed to the hacker shaft 43 in the case 22 to the locking body 41. Actuating pin 58 of switch 57 depending on the removal
A drive member 46 that is pressed into contact with and separated from the base member 22; An operation handle 61 that is rotatably provided outside the case 22 to perform an on / off operation, a boss 62 provided on the handle 61, and a hacker shaft 43 outside the case 22 that is fixed to the locking body of the leaf spring 53. The boss 6 rotates when the handle 61 is turned on and off, and the handle 61 is turned on and off.
And a lock lever 54 for blocking the contact of the two with each other.

[0018]

The pole gas switch of the present invention constructed as described above is detachably attached to the hacker shaft 43 in the case 22 which is rotationally biased in one direction and to the locking body 41 in the case 22. The leaf spring 53 to be locked and the driving body 46, which presses the actuating pin 58 of the switch 57 in the case 22 so as to come into contact with and disengage from the locking body 41 of the leaf spring 53, are fixed. A lock lever 54 that is rotated by detachment of the leaf spring 53 from the locking body 41 is fixed to the outer hacker shaft 43, and a boss 62 that abuts on the rotated lock lever 54 is provided on the operation handle 61. Since the release pin 38 for releasing the locking of the leaf spring 53 to the locking body 41 is fixed to the pressure bellows 37 that expands due to the decrease in the gas pressure of, the bellows 37 is restored when the gas pressure in the case 22 decreases. Release by force 38 and release pin 38 Move, the locking is released to the engaging body 41 of the leaf spring 53, mint shaft 43 is rotated, the drive member 46
Is released from the operating pin 58 of the switch 57, and the switch 5
7 is turned off, the conduction of the switch actuating coil is cut off, and at the same time, the lock lever 54 is rotated, and when the handle 61 is rotated from the ON state and the OFF state, the boss 62 of the handle 61 moves to the lock lever 54. When the handle 61 comes into contact with the handle 61, the handle 61 is prevented from rotating from the on state to the off state.

That is, the electrical lock of the switch actuating coil and the mechanical lock of the handle 61 are simultaneously performed.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment will be described with reference to FIGS. 1 is a front view, FIG. 2 is a right side view of FIG. 1, and FIG.
1 is an enlarged front view of a part of FIG. 1, FIG. 4 is a rear view of the front plate of FIG. 1, FIG. 5 is a view of arrows A and A in FIG. 4, and FIG.
FIG. 7 is a view taken along the line B, and FIG. 7 is a view taken along the lines C and C of FIG.

In these figures, 22 is a case of a pole gas switch in which an insulating gas such as SF ₆ having a predetermined pressure is filled, 23 is a left and right side plate of the case 22, and 24 is both side plates 23. The bulging part is bulged to the outside, and 25 is attached to both bulging parts 24.
Insulators are provided one by one, 26 is a base portion having a diameter larger than the tip end portion of the insulator 25, 27 is a plurality of support rods planted in the side plate 23, and 28 is a rough comb-like shape provided in the side plate 23. It is a single mounting plate, and is superposed on the front surface of the base portion 26 of the insulator 25 from above and below, and the support rod 27 is inserted into the through holes of both mounting plates 28. Reference numeral 29 is a nut screwed to the support rod 27, and presses the front surface of the base portion 26 of the insulator 25 via the mounting plate 28.
An insulator 25 is attached to the side plate 23.

Reference numeral 30 is an upper plate of the case 22, and 31 is an upper plate 30.
Support pieces that are erected on both sides of the front and rear of the
It is a support plate in the left-right direction erected on the front and rear of 0,
Both ends are fixed to the support piece 31. Reference numeral 33 denotes four attachment rods, the bent lower ends of which are inserted into the through holes of both ends of the support plate 32 and locked by pins. Reference numeral 34 denotes two pressing plates at the front part and the rear part, and the mounting rods 33 are inserted into the through holes at both ends. Reference numeral 35 denotes a nut screwed onto the mounting rod 33, which is a front and rear armpiece (not shown) of the utility pole.
Is inserted between the two mounting rods 33 at the front and rear portions, and by tightening the nuts 35, the support plate 32 and the pressing plate 34 come into contact with the upper and lower surfaces of the armband, and the case 22 is attached to the armband. It is installed.

Reference numeral 36 is a front plate of the case 22, and 37 is a pressure bellows whose base is provided on the lower right side of the back surface of the front plate 36, and expands and contracts according to changes in the gas pressure in the case 22.
Reference numeral 38 denotes a release pin provided in the bellows 22, one end of which is led out and fixed to the tip of the bellows 37, and the other end of which passes through the front plate 36 and is led out of the front plate 36.
The bellows 37 moves due to expansion and contraction. 39 is the front plate 36
Cap of bellows 37 covering the outer release pin 38, 4
0 is a plate body whose central portion is fixed to the back surface of the front plate 36, 41
Is a locking body, and one side of the plate body 40 is raised along the bellows 37, and the tip end portion thereof is bent to form the bellows 37.
It is located behind. Reference numeral 42 denotes a locking portion formed by further bending the tip of the locking body 41.

Reference numeral 43 denotes a horizontal hacker shaft, which penetrates the front plate 36 and is rotatably provided on the front plate 36, and is located near the bellows 37. 44 is a pin implanted in the hacker shaft 43, 45 is a rotatable collar inserted in the hacker shaft 43, 46 is a plate-shaped drive body whose base is inserted in the hacker shaft 43, and 47 is a base of the drive body 46. To front plate 36
A mounting piece 48 formed by bending to the side is a screw, penetrates the mounting piece 47 and is screwed into a screw hole (not shown) of the collar 45, and the driving body 46 is mounted on the collar 45. .

Reference numeral 49 is a locking piece formed by bending the base of the driving body 46 in the opposite direction to the mounting piece 47, and 50 is a long hole formed in the locking piece 49. 44 is loosely inserted. Reference numeral 51 is a drive piece formed by bending the tip of the drive body 46 in the same direction as the locking piece 49, and is bent in a V shape in FIG.

Reference numeral 52 designates a spiral spring wound around the hacker shaft 43, both ends of which are locked to fixed parts such as the hacker shaft 43 and the front plate 36, and the hacker shaft 43 is attached in the counterclockwise direction in FIG. I am energetic.

Reference numeral 53 is a leaf spring whose base is fixed to the inner end of the case 22 of the mint shaft 43, the tip of which is located behind the release pin 38 of the bellows 37 and the engaging portion of the engaging body 41. It is locked to 42 by the biasing force of the spring 52, and the pin 44 is in contact with one end of the elongated hole 50. Reference numeral 54 designates a lock lever whose base is fixed to the outer end of the case 22 of the mint shaft 43, 55 covers the lock lever 54, and a cover plate (see FIG. , Indicated by a chain line in FIG. 3).

Reference numeral 56 is a mounting body formed by bending the other side of the plate 40, 57 is a heavy load mounted on the mounting body 56,
That is, it is a switch composed of a limit switch having a large contact pressure, and is located near the bellows 37. Reference numeral 58 is an operation pin of the switch 57, and the operation direction is the hacker shaft 4
It is in a direction perpendicular to the axial center of 3, and is pressed by the drive piece 51 of the drive body 46, the switch 57 is turned on, and the switch actuating coil (not shown) is in a conductive state.

Reference numeral 59 is an operating shaft rotatably provided through the front plate 36 near the bellows 37, and 60 is the case 2
2 is an operation lever attached to the operation shaft 59 inside, 61 is an operation handle attached to the operation shaft 59 outside the case 22, and 62
Is a boss provided on the rear surface of the handle 61. When the hacker shaft 43 is rotated and the handle 61 is rotated from the inserted state or the disconnected state, the boss 62 abuts the lock lever 54 and the handle 61 is inserted. The rotation from the off state is blocked.

Next, the operation will be described. First, when the gas pressure in the case 22 is normal, the pressure bellows 37 is compressed by the gas pressure, the release pin 38 of the bellows 37 is positioned in front of the leaf spring 53, and the leaf spring 53 is locked by the locking body 41. The hacker shaft 43 is prevented from rotating by being locked to the portion 42, the lock lever 54 is positioned at the position shown by the solid line in FIG. 3, and the handle 61 can be turned on and off freely.

On the other hand, the pin 44 abuts on one end of the elongated hole 50 of the locking piece 49, and the driving piece 51 of the driving body 46 presses the operating pin 58 of the switch 57 as shown by the solid line in FIG. 57 is in the ON state, and the switch operating coil is in the conductive state.

Next, with the handle 61 turned off, the case 2
When the gas pressure in 2 decreases, the bellows 37 expands due to the restoring force, the release pin 38 slightly moves inward of the case 22, and is released from the locking portion 42, and the leaf spring 53 and the locking portion 42.
Is released, the hacker shaft 43 rotates counterclockwise by the spring 52, and the lock lever 54 moves to the position shown by the chain line in FIG.

Therefore, even if the handle 61 in the cut state shown by the solid line in the figure is to be rotated, the boss 62 of the handle 61 is rotated.
Comes into contact with the lock lever 54, the rotation of the handle 61 from the open state is blocked, and the handle 61 is mechanically locked.

On the other hand, when the hacker shaft 43 is rotated counterclockwise, as shown in FIG.
As shown by the chain line, the pin 44 of the hacker shaft 43 moves from one end of the elongated hole 50 of the locking piece 49 to the other end side, the pin 44 abuts the other end of the elongated hole 50, and the driving member together with the collar 45. Four
6 rotates a little later than the lock lever 54, the driving piece 51 is disengaged from the operating pin 58 of the switch 57, the switch 57 is turned off, and the switch operating coil is turned on, as shown by the chain line in the figure. Upon disconnection, the handle 61 is mechanically locked and the switch actuating coil is electrically locked.

At this time, the reason why the drive body 46 rotates later than the lock lever 54 is that the drive body 46 is rotated by the lock lever 5.
This is because, as in the case of 4, the bellows 37 abuts when it is rotated by more than 90 degrees.

Next, when the gas pressure inside the case 22 drops with the handle 61 in the on state, the lock lever 54 moves to the position shown by the chain line in FIG. 3 and the handle shown by the chain line in the same figure as described above. Even if you try to rotate from the state of 61,
The boss 62 of the handle 61 contacts the lock lever 54,
Rotation of the handle 61 from the on state is blocked, the handle 61 is mechanically locked, and at the same time, the switch 57 is turned off and the switch actuating coil is electrically locked.

As described above, the starting point of the operation of the mechanical lock mechanism of the handle 61, that is, the starting point of the leaf spring 53 of the hacker shaft 43 disengaged from the locking body 41 and the rotation of the lock lever 54 is for the switch actuation. Since the operation starting point of the coil electrical lock mechanism, that is, the driving body 46 of the hacker shaft 43 is disengaged from the operation pin 58 of the switch 57 and the switch 57 is turned off, the operation starting point of both lock mechanisms is one. At the same time, it becomes unnecessary to coordinate the operation starting points of both lock mechanisms as in the conventional case, and the operation of both lock mechanisms is surely performed.

Moreover, since the mechanical lock mechanism of the handle 61, that is, the locking body 41, the hacker shaft 43, the spring 52, and the plate spring 53 are provided inside the case 22, it is not necessary to cover the case airtightly, and the structure is provided. Will be easier.

Further, the operating direction of the operating pin 58 of the switch 57 is perpendicular to the axis of the hacker shaft 43,
In addition, since the switch operating coil is electrically locked by the detachment of the driving body 46 due to the rotation of the hacker shaft 43, when the operating pin 58 of the switch 57 is switched from ON to OFF, the OFF timing is instantly stabilized. At the same time, a heavy load, that is, a contact pressure is large, and a switch resistant to vibration can be used, and malfunction does not occur.

[0040]

Since the present invention is constructed as described above, it has the following effects.

The pole-mounted gas switch of the present invention is constructed such that the case 22 is attached to the hacker shaft 43 in the case 22 which is urged to rotate in one direction.
The leaf spring 53 that is releasably locked to the inner locking body 41 and the leaf spring 53 to the operating pin 58 of the switch 57 in the case 22.
The driving body 46, which is pressed into contact with and disengages from the locking body 41 according to engagement and disengagement, is fixed to the hacker shaft 43 outside the case 22 and is rotated by the leaf spring 53 being separated from the locking body 41. A boss 62 for fixing the lock lever 54 and abutting against the rotated lock lever 54 of the operation handle 61 is provided, and the pressure bellows 37 extending due to the decrease of the gas pressure in the case 22 is attached to the locking body 41 of the leaf spring 53. Release pin 38 to release the lock
Since the operation start point of the mechanical lock mechanism of the handle 61 and the operation start point of the electric lock mechanism of the switch actuating coil become one at the same time, the operation start points of both lock mechanisms need to be coordinated. Therefore, the operation of both lock mechanisms can be reliably performed.

Moreover, the mechanical lock mechanism of the handle 61, that is, the locking body 41, the spring 52, and the leaf spring 53 are attached to the case 2.
Since it is provided inside 2, the structure can be simplified without the need for a cover.

Further, the operating direction of the operating pin 58 of the switch 57 is made perpendicular to the axial center of the hacker shaft 43, and the switch operating coil is electrically locked by the hacker shaft 4.
Since the driving body 46 is disengaged by the rotation of 3, the timing of turning off the operating pin 58 of the switch 57 can be instantly stabilized, and a heavy load, that is, a contact pressure A large, vibration-resistant switch can be used to prevent malfunction.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is an enlarged front view of a part of FIG.

FIG. 4 is a rear view of the front plate of FIG.

FIG. 5 is a view taken along the line A and A in FIG.

FIG. 6 is a view taken along line B, B of FIG.

7 is a view taken along the line C and C in FIG.

FIG. 8 is a cut right side view of a conventional example.

9 is a view taken along line D, D in FIG.

10 is a view taken along the line E and E in FIG.

FIG. 11 is a view on arrow F of FIG.

[Explanation of symbols]

 22 Case 37 Pressure Bellows 38 Release Pin 41 Locking Body 43 Hacker Shaft 46 Driver 53 Leaf Spring 54 Lock Lever 57 Switch 58 Actuating Pin 61 Operation Handle 62 Boss

Claims (1)

[Claims] 1. A pressure bellows (37) that expands and contracts due to a change in gas pressure in the case (22), and a locking body (41) provided in the case (22), and is urged to rotate in one direction. , A hacker shaft (43) penetrating the case (22) and a switch operating coil provided in the case (22) to bring the switch operating coil into a conductive state, and the operating direction of the operating pin (44) is the hacker shaft. Switch (57) vertical to the axis of (43)
A leaf spring (53) fixed to the hacker shaft (43) in the case (22) and releasably locked to the locking body (41); and the hacker in the case (22). A driving body (which is fixed to the shaft (43) and is press-contactably and detachably contacted with the operating pin (58) of the switch (57) in accordance with engagement and disengagement of the leaf spring (53) with respect to the locking body (41). 46) and is fixed to the bellows (37) in the case (22) and moved by expansion and contraction of the bellows (37) to lock the leaf spring (53) to the locking body (41). A release pin (38) for releasing, an operation handle (61) rotatably provided outside the case (22) for performing an on / off operation, and a boss (62) provided on the handle (61). , The leaf spring fixed to the hacker shaft (43) outside the case (22) The lock lever (53) is rotated by disengagement from the locking body (41), and the rotation of the handle (61) from the inserted state and the cut state is prevented by the abutment of the boss (62). 54) and a pole gas switch equipped with.