JP2604029Y2 - Switch operation mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening and closing operation mechanism of a switch, and more particularly to an operation mechanism for manual opening and closing by an operation handle or the like.

[0002]

2. Description of the Related Art Conventionally, in this type of opening / closing operation mechanism, an operation handle is connected to a movable electrode of an opening / closing section via a link mechanism, and the movable electrode is connected via a link mechanism in accordance with the direction of rotation of the operation handle. It is designed to be turned on and off. The link mechanism is provided with a power storage spring, and during the opening / closing operation, the power storage spring is once charged against the biasing force, and after passing the dead point, the movable electrode is turned on and closed using the stored power. The open state is maintained.

[0003]

However, as described above, in the opening / closing operation mechanism, the operating handle must be rotated against the large urging force of the energy storage spring both in closing and opening. However, there is a problem that opening and closing operations are very difficult.

An object of the present invention is to provide an opening and closing operation mechanism of the switch that it is possible to reduce the operating force required during release manual <br/> open by operating the handle operation gives a good operation feeling.

[0005]

According to the present invention, there is provided an operating member which can be manually operated in two directions, that is, closing and opening, and the operating member is provided.
A first energy-storing member that constantly urges to a neutral position, an input link mechanism that inputs a movable electrode in conjunction with an input operation of the operation member, and an opening operation force during the input operation by the operation member
Said There a second energy-storing member being prestressed, and a locking member for holding the loaded state of the second energy-storing member during closing operation by the operation member, in conjunction with the opening operation of the operating member Tomo If and an open link mechanism for releasing the engagement of the locking member
The second energy storage member is more than the first energy storage member.
The operating member has a large urging force, and the operating member
The gist of the invention is that the closing operation is performed against the urging force of the member .

[0006]

[Action] When the operating member against the biasing force of the first energizing member is closing operation, the movable electrode is turned through a closing link mechanism, engagement is prestressing the second prestressing members simultaneously The stored state is maintained by the stop member. When the operating member is opened, the locking of the locking member is released via the opening link mechanism in conjunction therewith, and the movable electrode is returned to the open state by the first energy storage member. .

[0007] Since the locking of the locking member is only released at the time of opening, the operating member is operated with a very small operating force.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a switching mechanism for a gas switch will be described below with reference to the drawings.

As shown in FIG. 2, a case 1 of a gas switch which can be automatically and manually operated has a metal box shape.
A power supply side bushing 2 and a load side bushing (not shown) are provided for each phase on both outer sides. Case 1
An opening / closing unit 4 having fixed and movable electrodes is installed on the right side of the inside, and an opening / closing operation mechanism 5 for moving the fixed and movable electrodes of the opening / closing unit 4 on and off is installed on the left side of the case 1.

The details of the opening / closing operation mechanism 5 will be described below.
As shown in FIGS. 1 and 3 to 5, the first substrate 6
Is fixed to a plurality of mounting blocks 7 welded in the case 1 with bolts 8, and a second substrate 10 is fixed to the first substrate 6 at a predetermined interval via an interval holding rod 9. ing. A make-up coil 11 is provided between the first and second substrates 6 and 10, and both ends of the make-up coil 11 are located at the front and rear ends.
A pair of bracket portions 1 bent on the second substrate 10
2 respectively. Front and rear sub-boards 13 and 14 are fixed to the front and rear ends of the input coil 11, respectively, and these sub-boards 13 and 14 are arranged in parallel with the first and second boards 6 and 10.

An input shaft 15 is rotatably supported between the first and second substrates 6 and 10, and the input shaft 15 protrudes to the left (see FIG. 3) from the second substrate 10 so that an interlocking lever is provided. 16
Is fixed. A handle shaft 17 is rotatably supported by the case 1 so as to face the input shaft 15.
The pin 18a of the interlocking lever 18 fixed to the handle shaft 17 has a hole 16a of the interlocking lever 16 on the input shaft 15 side.
Is inserted inside. Therefore, when the operation handle 19 fixed to the handle shaft 17 is rotated outside the case 1,
The input shaft 15 is rotated in the same direction via the interlocking levers 16 and 18 together with the handle shaft 17.

At a position close to the second substrate 10, a neutral spring 20 as a first energy storage member is wound around the input shaft 15, and both ends of the neutral spring 20 project from the first substrate 6. The fixed pin 21 is sandwiched from both sides. or,
A neutral lever 22 is fixed to the input shaft 15,
The two neutral pins 23 are sandwiched between both ends of the neutral spring 20 above the fixed pin 21. Therefore, the input shaft 15 is always urged to the neutral position by the neutral pin 23. As described above, since the neutral spring 20 is for returning the input shaft 15 to the neutral position, the urging force is set to be relatively weak.

A drive lever 24 is fixed to the input shaft 15. One end of a pair of interlocking links 25 is connected to the tip of the drive lever 24 by pins 26. The hole 25a on the interlocking link 25 side is formed in a long hole shape, and the pin 26 can slide in the longitudinal direction. The other ends of both interlocking links 25 are connected to the distal end of an intermediate lever 27, and the proximal end of the intermediate lever 27 is a rotatably supported intermediate member between the second board 10 and the rear sub-board 14. It is fixed to the shaft 28.

A pair of pressing levers 29 are fixed to the intermediate shaft 28, and a roller 30 is rotatably provided between the distal ends of the pressing levers 29. The roller 30 is in contact with one end of the plunger 31 of the input coil 11, and hereinafter, the end is referred to as a large end 31a, and the opposite end of the input coil 11 is referred to as a small end 31b. Then, the closing coil 11 moves the plunger 31 backward at the time of non-excitation, and
a is brought into contact with a regulating plate 32 fixed to the closing coil 11,
At the time of excitation, the plunger 31 is moved forward to
1b is projected. When the input shaft 15 rotates clockwise in FIG. 1, the pressing lever 29 rotates clockwise via the interlocking link 25 and the intermediate lever 27, and the plunger 31 is moved forward by the roller 30. Conversely, when the input shaft 15 rotates counterclockwise, the operation of the interlocking link 25 is prevented only by sliding the pin 26 forward in the hole 25a of the interlocking link 25.

A stopper shaft 33 is supported between the second substrate 10 and the front sub-substrate 13 so as to be located near the small end 31 b of the plunger 31.
, A stopper 34 is rotatably mounted on the shaft. The stopper 34 is a rotation urging spring 35 wound around a stopper shaft 33.
1, the stopper 34 is always urged counterclockwise so that one side of the stopper 34 enters the movement locus of the small diameter portion 31 b of the plunger 31.

On the other hand, a drive shaft 36 is rotatably supported between the first and second substrates 6 and 10, and the base ends of a pair of driven levers 37 are fixed to the drive shaft 36, respectively. The tip of the driven lever 37 is connected to one end of a first link 38, and the other end of the first link 38 is connected to one end of a second link 40 by a stopper pin 39. Also, the second
The other end of the link 40 is a third pin 4
2 and the other end of the third link 42
It is connected to a support shaft 43 supported between the second substrate 10 and the front sub-substrate 13. The third link 42 is constantly urged clockwise by a rotation urging spring 44. or,
The stopper pin 39 is hooked at the tip of the stopper 34, and is restricted from moving to the closing coil 11 side.

A hanging shaft 45 is supported between the second substrate 10 and the front sub-substrate 13, and a hanging lever 46 is rotatably mounted on the hanging shaft 45. . The latch lever 46 is constantly urged clockwise in FIG. 1 by a rotation urging spring 47 wound around a latch shaft 45, and a bolt 48 provided on one side thereof so as to be able to be screwed is adjusted. In addition, it is brought into contact with the rotation regulating shaft 49 supported between the second substrates 6 and 10, and the tip is brought into contact with the locking pin 41. Therefore, unless the locking of the locking lever 46 is released, the locking of the stopper pin 39 by the stopper 34 is not released.

A trip coil 50 is installed above the first and second substrates 6 and 10, and the trip coil 5
The tip of the zero plunger 51 is opposed to the neutral pin 23 of the neutral lever 22, and is located on the movement trajectory of the neutral pin 23 when manually opened in the demagnetized state. Plunger 5
As shown in FIG. 6, a distal end of a trip lever 52 is connected to the base 1 and a proximal end of the lever 52 is fixed to a trip shaft 53 rotatably supported between the first and second substrates 6 and 10. ing. One end of the trip shaft 53 is connected to the second substrate 10
Projecting further toward the operation handle 19, and a first end
Are interlocked with each other.

Also, as shown in FIGS.
Reference numeral 5 denotes a second interlocking lever 55 fixedly protruding from the second substrate 10 toward the operation handle 19, and the second interlocking lever 55 is connected to the first interlocking lever 54 via a rod 56.
It is connected to. Accordingly, when the trip coil 50 is excited and the plunger 51 is pulled forward, the first interlocking lever 54 is rotated counterclockwise in FIG. 6 together with the trip lever 52, and the second interlocking lever 54 is The latch lever 46 is rotated counterclockwise together with 55, and the latch on the latch pin 41 is released.

An intermediate shaft 57 is rotatably supported between the first and second substrates 6 and 10 at a position close to the handle shaft 17, and a tip of an intermediate lever 58 fixed to the intermediate shaft 57. Is fixed to one end of an intermediate link 59. The other end of the intermediate link 59 is connected to a drive lever 60 fixed to the drive shaft 36. One end of the intermediate shaft 57 protrudes from the second substrate 10 toward the operation handle 19, and an interlocking lever 61 is fixed thereto.
A pointer shaft 62 is rotatably supported by the switch case 1 so as to face the switch. The pin 63a of the interlocking lever 63 fixed to the pointer shaft 62 is inserted into the hole 61a of the interlocking lever 61 on the intermediate shaft 57 side. Therefore, with the rotation of the intermediate shaft 57, the pointer shaft 62 is rotated in the same direction via the interlock levers 61 and 63 together with the intermediate lever 58, and the pointer 64 indicates the open / closed state of the switch.

As shown in FIGS. 3 and 7, the drive shaft 36 protrudes from the second substrate 10 toward the opening / closing section 4, and a base end of an operation lever 65 is fixed to the protruding end. One end of an adjustment link 66 is connected to the tip of the operation lever 65, and the other end of the adjustment link 66 is connected to one end of an opening / closing lever 68 that can rotate about an opening / closing shaft 67. Therefore,
With the rotation of the drive shaft 36, the opening / closing lever 68 rotates between the two positions of the closing position shown by the solid line and the opening position shown by the imaginary line in FIG. Movable electrode comes in contact with and separates from fixed electrode (input and release)
It is supposed to.

The other end of the opening / closing lever 68 is connected to a holding member 70 via an extendable guide rod 69, and the holding member 70 is fixed to the back surface of the first substrate 6. A compression spring 71 as a second energy storage member is disposed on the outer periphery of the guide rod 69, and the opening / closing lever 68 is always biased by the compression spring 71 to an open position indicated by a virtual line. In the open state, one end of the guide rod 69 is in contact with a stopper bolt 72 fixed to the back surface of the first substrate 6. Since the compression spring 71 is used to separate the movable electrode from the fixed electrode when the compression spring 71 is opened, the urging force of the compression spring 71 is set considerably higher than that of the neutral spring 20.

In this embodiment, the driving lever 24, the interlocking link 25, the intermediate lever 27, the pressing lever 29, the plunger 31 of the closing coil 11, the first link 38, the driven lever 37, the driving shaft 36, the operating lever 65, the adjustment Link 6
6, and the opening / closing lever 68 constitute a closing link mechanism S. The neutral lever 22, the neutral pin 2
3. The open link mechanism T is constituted by the plunger 51 of the trip coil 50, the trip lever 52, the first and second interlocking levers 54 and 55, and the rod 56.

The interior of the case 1 of the switch of the present embodiment is not partitioned, and the switch 4 and the switch operating mechanism 5 are installed in the same room. An arc-extinguishing gas such as SF6 is sealed in the case 1 so that the arc is extinguished when the opening / closing section 4 is opened. And since the opening / closing operation mechanism 5 is installed in the arc-extinguishing gas, various advantages such as rust prevention of each link can be obtained.

Next, the operation of the switching mechanism of the switch constructed as described above will be described. Automatic injection Now, the case of automatic injection from the open state will be described.
As shown in FIG. 8, in the open state, the locking by the stopper 34 is released, and the driving shaft 36 is rotated counterclockwise by the accumulated force of the compression spring 71 so that the stopper pin 39
Is brought into contact with the small end 31b of the plunger 31 of the closing coil 11.

When the closing coil 11 is excited in this state, the stopper pin 39 is rotated clockwise with the projection of the small end 31b of the plunger 31, as indicated by the imaginary line in FIG. Is moved forward. At this time, since the locking pin 41 comes into contact with the tip of the locking lever 46 and is locked, the stopper 34 is rotated counterclockwise by the rotation biasing spring 35 when the plunger 31 is completely projected. The tip of the stopper 34 prevents the stopper pin 39 from returning to the original position.

As the stopper pin 39 moves forward, the driven lever 37 is moved via the first link 38.
Is rotated clockwise, and the operation lever 65 is rotated in the same direction via the drive shaft 36. As a result, adjustment link 6
6, the opening / closing lever 68 is rotated counterclockwise while compressing and accumulating the compression spring 71 to turn on the movable electrode of the opening / closing portion, and is opened / closed by engagement of the stopper pin 39 and the stopper 34. The operation mechanism shifts at the time of closing shown in FIG.
The excitation of the closing coil 11 is performed instantaneously, and the plunger 31 is immediately turned on after the closing of the switch is completed.
Immerse yourself.

Next, a description will be given of a case where manual insertion is performed from the open state shown in FIG. 8. The operation handle 19 is rotated clockwise,
As shown in FIG. 9, the input shaft 15 is turned in the same direction via the interlocking levers 16 and 18 against the urging force of the neutral spring 20. Accordingly, the drive lever 24 is rotated in the same direction, the pressing lever 29 is rotated clockwise together with the intermediate lever 27 via the interlocking link 25, and the roller 3 at the tip thereof is rotated.
At 0, the large end 31a of the closing coil 11 is pressed forward. Then, the plunger 3 is moved in the same manner as in the above-described automatic injection.
The stopper pin 39 is hooked on the stopper 34 in accordance with the projection of the small end 31b of the first unit 31b, and the operation lever 65 is rotated clockwise by the rotation of the drive shaft 36. 68 is turned to feed the movable electrode.

As described above, since the compression spring 71 is charged and the movable electrode is turned on, a considerably large operation force is required when the movable electrode is turned on. Then, in this state, the operation handle 1
When the user releases his / her hand, the input shaft 15 returns to the neutral position by the urging force of the neutral spring 20, the pressing lever 29 rotates counterclockwise to return to the original position, and the plunger 31 also projects the large end 31a. Return to the state where

Automatic Release Further, the case where the automatic release is performed from the above-mentioned closed state will be described. As shown in FIGS. 6, 7 and 10, the plunger 51 of the trip coil 50 is pulled forward and the trip lever 52 is turned counterclockwise. The first interlocking lever 54 is rotated in the same direction together with the trip shaft 53. Accordingly, the second interlocking lever 55, the locking shaft 45, and the locking lever 46 are rotated in the same direction via the rod 56, and the locking of the locking pin 41 by the locking lever 46 is released.
Of the link 42 in the counterclockwise direction is allowed.

As a result, the driven lever 37 is rotated counterclockwise together with the drive shaft 36 by the accumulated force of the compression spring 71, and the second and third links 38 and 40 are bent in a "-" shape. While doing so, the stopper pin 39 rides over the tip of the stopper 34 and contacts the small end 31b of the plunger 31.
At the same time, the opening / closing lever 68 is rotated clockwise by the accumulated force of the compression spring 71 to open the movable electrode of the opening / closing section, and the opening / closing operation mechanism shifts to the opening state shown in FIG. Since the trip coil 50 is also instantaneously excited, the plunger 51 is protruded immediately after the opening of the switch, and the latch lever 46 returns to the original position.

Manual release On the other hand, the case where the manual release is performed from the above-mentioned closed state will be described. The operation handle 19 is rotated counterclockwise in the opposite direction to that at the time of the closed state, and as shown in FIG. The pin 23 contacts the plunger 51 of the trip coil 50 and moves forward. Accordingly, the trip lever 52 is rotated counterclockwise as in the case of the automatic opening described above, and the locking lever 46 is rotated counterclockwise via the first interlock lever 54, the rod 56, and the second interlock lever 55. Pivoted,
The locking of the locking pin 41 is released, and the stopper pin 39 is moved by the urging force of the compression spring 71 so that the small end 3 of the plunger 31 is moved.
1b, and the movable electrode is opened. Therefore, the opening / closing operation mechanism shifts at the time of opening shown in FIG.

As described above, when the lever is released, the locking of the locking lever 46 is merely released against the neutral spring 20 having a weak urging force, and the opening operation can be performed with a very small operation force. still,
Since it is not necessary to accumulate the compression spring 71, the operation handle 19 is rotated with a very small operation force. When the drive lever 24 is rotated counterclockwise as described above, the pin 26 of the drive lever 24 is
The link 25 and the intermediate lever 27 do not operate because they only move within the play a.

As described above, the opening / closing operation mechanism of this embodiment is
At the time of manual opening, there is no need to accumulate the compression spring 71 having a strong urging force, and it is only necessary to release the locking of the locking lever 46 against the neutral spring 20 having a weak urging force. The opening operation can be performed by rotating the operation handle 19.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the present invention is embodied in a switch having an automatic opening / closing function, but is embodied in a switch having only a manual opening / closing function. You may.

In the above embodiment, the neutral pin 23 of the neutral lever 22 is brought into contact with the plunger 51 of the trip coil 50 at the time of manual opening, and the same transmission mechanism as at the time of automatic opening, that is, the first interlocking lever 54, The locking of the locking lever 46 is released via the rod 56 and the second interlocking lever 55. However, a completely independent transmission mechanism for manual release is provided. 4
6 may be canceled.

[0037]

According to the invention the advantages described above in detail the way the opening and closing operation mechanism of the switch of the present invention, excellent in that it is possible to reduce the operating force required during release manual opening by operating handle operation gives a good operation feeling It has the effect.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along the line AA of FIG. 3, showing a switching operation mechanism in a closed state of the switch of the embodiment.

FIG. 2 is a front view of the switch.

FIG. 3 is a partial plan sectional view of a switch.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a sectional view taken along line CC of FIG. 3;

FIG. 6 is a sectional view taken along line DD of FIG. 3;

FIG. 7 is a sectional view taken along line EE of FIG. 3;

FIG. 8 is a sectional view showing the opening / closing operation mechanism in an open state.

FIG. 9 is a cross-sectional view showing the opening / closing operation mechanism at the time of manual insertion.

FIG. 10 is a sectional view showing an opening / closing operation mechanism at the time of automatic opening.

FIG. 11 is a cross-sectional view showing an opening / closing operation mechanism at the time of manual opening.

[Explanation of symbols]

19: operation handle as operation member, 20: first storage
Neutral spring as a biasing member; 46, a latch lever as a locking member ; 71, a compression spring as a second biasing member;
Closing link mechanism, T ... Open link mechanism.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-123732 (JP, A) JP-A-1-137530 (JP, A) JP-A-3-26011 (JP, U) JP-A Sho 54- 107859 (JP, U) JP-A 63-95135 (JP, U) JP 3-34818 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01H 33/40 H01H 31 / 02 H01H 33/28 H01H 3/54 H01H 33/38

Claims (1)

(57) [Scope of request for utility model registration] An operation member (19) which can be manually operated in two directions, namely, closing and opening, and a first member for constantly urging the operation member (19) to a neutral position.
A prestressing member (20), closing operation conjunction with the to put the movable electrode closing link mechanism and (S), opening operation force during closing operation by pre-SL operating member (19) of the operating member (19) is蓄A second energy storage member (71) to be energized; and a locking member (46) for maintaining the energy storage state of the second energy storage member (71) during a closing operation by the operation member (19).
When the open link mechanism for releasing the locking of the locking member in conjunction with the opening operation of the operation member (19) (46) and (T)
And the second energy storage member (71) is provided with the first energy storage member.
(20) It has a larger biasing force than the operation member (1).
9) resists the urging force of the first energy storage member (20).
Switchgear closing operation mechanism, wherein a turned opening operation is performed.