JPH09147698A - Switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide operation necessary for respective switches despite of a simple structure by selecting a guide path for a guide groove. SOLUTION: A link mechanism connected to respective movable contacts 14b, 15b of respective switches 14, 15 is connected to an operating rod 28 via a connection shaft 27 and a guide groove 34 for guiding the connection shaft 27 is so constituted as to contain the second direction which forms an angle 90 deg. or less to the first direction for moving to the input position 34a and the release position 34b in either direction where the both switches 14, 15 are arranged, in a process where the operating rod 28 moves between an input position 34a and an open position 34b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchgear having two switches having different characteristics.

[0002]

2. Description of the Related Art FIG. 32 is a block diagram of a conventional switchgear. In FIG. 32, 1 is a container filled with low-pressure insulating gas, 2 and 3 are vacuum switch tubes having different opening and closing characteristics, which are movable with fixed contacts 2a and 3a connected to an external circuit via bushings 4a and 4b. It is composed of contacts 2b and 3b. The movable contacts 2b, 3b are arranged in an upright posture so that they can move in the vertical direction. Each vacuum switch tube 2, 3 is provided with a pressure contact device (not shown) so that a contact force acts between the fixed contacts 2a, 3a and the movable contacts 2b, 3b in the closed state. . Reference numerals 4 and 5 are links having one ends connected to the movable contacts 2b and 3b, and the other ends are connected to one ends of the operation levers 6 and 7. The operation levers 6 and 7 are rotatably supported by shafts 8 and 9.
The link 4 and the operating lever 6 are adjusted so that the operation matches the open / close characteristics of the vacuum switch tube 2. Further, the vacuum switch tube 3 is configured so that the link 5 and the operation lever 7 are adjusted so that the operation is matched with the opening / closing characteristics. Reference numeral 10 is an operation rod, and each operation lever 6, 7
Is connected to the other end of. Reference numeral 11 denotes a driving device, which operates according to a command from a control device (not shown). Reference numeral 12 denotes a connecting mechanism that connects the operating rod 10 and the drive device 11, and operates via a sealed bearing between the operating rod 10 and the container 1.

In the above structure, both vacuum switch tubes 2,
3 is turned on, the driving device 11 is actuated by the command of the control device (not shown) from the open state of FIG. 32, and the driving force is applied to the operating lever 6 via the connecting mechanism 12 and the operating rod 10 that moves downward. , 7 are transmitted. As a result, the operation lever 6 rotates clockwise about the shaft 8 and the operation lever 7 rotates counterclockwise about the shaft 9. Along with this, the links 4 and 5 move upward to move the movable contacts 2b and
3b is moved toward each fixed contact 2a, 3a. In this case, the movable contactor 2b operates according to the operating characteristic of the combination of the link 4 and the operating lever 6, and the movable contactor 3b operates according to the operating characteristic of the combination of the link 5 and the operating lever 7. Then, the movable contactor 2 near the end of the movable stroke.
b and 3b contact the fixed contacts 2a and 3a and stop.
However, after that, the operation rod 10, the operation levers 6 and 7, and the links 4 and 5 operate in the stroke corresponding to the contact pressure stroke to complete the closing operation.

[0004]

Since the conventional switchgear is constructed as described above, it is necessary to construct a link mechanism corresponding to each vacuum switch tube and a link mechanism having different operation levers, which makes the structure complicated. There was a problem that became. Further, when the dimensions of the operation stroke are different, the side having a longer operation stroke always operates at a high speed, which causes a problem of significantly shortening the life of the contactor.

[0005]

According to a first aspect of the present invention, there is provided a switchgear in which a fixed switch and a movable switch are contacted and separated from each other at predetermined intervals. The first link mechanism and the second link mechanism, which are arranged and respectively connected to the respective movable contacts, are connected to the operation rod via a connection shaft arranged between both switches, and the operation rod is driven by the drive mechanism. In the opening and closing device that opens and closes between both contacts,
In the process in which the operating rod moves in the first direction in which both the contacts are brought into contact with and separated from each other, the second direction in which the angle of 90 degrees or less is formed with the first direction in the direction of either side where the switches are arranged. Is provided with a guide groove for guiding the connecting shaft.

In the switchgear according to a second aspect of the present invention, the first switch and the second switch that contact and separate the fixed contacts and the movable contacts are arranged at predetermined intervals, and the movable contacts are separated from each other. The first link mechanism and the second link mechanism, which are respectively connected to the child, are connected to the operating rod via a connecting shaft arranged between the switches, and the operating rod is driven by the drive mechanism to open and close between the contactors. In the opening / closing device configured to perform the above, when the connecting shaft is driven by the drive mechanism via the operating rod in the first direction in which both switches are opened, the connecting shaft is guided while being restricted in the driving direction of the operating rod. When the guide groove of No. 1 and the connecting shaft are driven by the drive mechanism through the operation rod in the second direction in which both switches are closed in the direction opposite to the first direction, the width is made wider than that of the first guide groove. Loosen the regulation from the first guide groove to compensate for deviations in the closing stroke of each switch. To way swingably guided to the switch side, in which a second guide groove that is formed continuously with the first guide groove.

According to a third aspect of the present invention, there is provided a switchgear in which a first switch and a second switch, each of which a fixed contact and a movable contact are brought into contact with and separated from each other, are arranged at a predetermined interval. In the opening / closing device configured to connect the first link mechanism and the second link mechanism, which are respectively connected to the child, to the operation rod, and drive the operation rod by the drive mechanism to open and close the both contacts,
The operating rod is provided with a pair of guide grooves formed in a direction including a component perpendicular to the driving direction of the operating rod, and the operating rod is provided with a first connecting shaft and a second connecting shaft for guiding each link mechanism by each guide groove. It is connected to.

According to a fourth aspect of the present invention, there is provided a switchgear in which a first switch and a second switch are provided at predetermined intervals so that the fixed contacts and the movable contacts are separated from each other. In the opening / closing device configured to connect the first link mechanism and the second link mechanism, which are respectively connected to the child, to the operation rod, and drive the operation rod by the drive mechanism to open and close the both contacts,
Each link mechanism is provided with a pair of guide grooves formed in a direction including a component perpendicular to the driving direction of the operation rod, and each link mechanism is connected to the operation rod by a connecting shaft guided by the both guide grooves.

According to a fifth aspect of the present invention, there is provided a switchgear in which the first contactor and the second contactor, at which the fixed contacts and the movable contacts come into contact with and separate from each other, are arranged at predetermined intervals, and the movable contacts are separated from each other. The first link mechanism and the second link mechanism, which are respectively connected to the child, are connected to the operating rod via a connecting shaft arranged between the switches, and the operating rod is driven by the drive mechanism to open and close between the contactors. In the opening / closing device adapted to perform the above, one end is rotatably connected to the connecting shaft, and the other end is supported by the shaft so as to be rotatable around a position near either of the two switches. Is provided.

According to a sixth aspect of the present invention, there is provided a switchgear in which a first switch and a second switch, each of which fixed contact and each movable contact are brought into contact with and separated from each other, are arranged at a predetermined interval. The first link mechanism and the second link mechanism, which are respectively connected to the child, are connected to the operating rod via a connecting shaft arranged between the switches, and the operating rod is driven by the drive mechanism to open and close between the contactors. In the switchgear configured to perform the above-mentioned operation, the operating rod is provided with a guide means having a guide groove in a direction in which the contacts come into contact with and separate from each other. Supported by a shaft so as to be swingable to the side, and the other end of the guide means is blocked by a holder within a predetermined range so that the other end swings within a range that compensates for deviations in the closing stroke of each switch, The other end of the guiding means is pressed by a pair of springs from both swinging directions,
The acting force of each spring holds the guide means in the neutral position in a balanced state.

According to a seventh aspect of the present invention, there is provided a switchgear in which a first switch and a second switch, each of which fixed contact and each movable contact are brought into contact with and separated from each other, are arranged at a predetermined interval. The first link mechanism and the second link mechanism, which are respectively connected to the child, are connected to the operating rod via a connecting shaft arranged between the switches, and the operating rod is driven by the drive mechanism to open and close between the contactors. In the switchgear configured to perform the above, the operating rod is provided with a guide means having a guide groove in a direction in which the two contacts come in contact with and separate from each other. A pair of holders are supported so as to swing within a range that compensates the deviation of the closing stroke of each switch, and each end of the guide means is pressed by a pair of springs from both swinging directions. To keep the guide means in neutral position with the acting force of the spring in equilibrium One in which the.

According to an eighth aspect of the present invention, in the switchgear according to any one of the first to seventh aspects, the first switch is a vacuum switch tube.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 is a front view of a vacuum switch tube, which is a partial cross section of the first embodiment, in an open state, and FIG.
4 is a plan view of the main part of FIG. 3, FIG. 3 is a front view showing the main part of FIG.
FIG. 2 is a configuration diagram schematically showing a main part of FIG. 1. 1 to 4, 13 is a container filled with low-pressure insulating gas,
Reference numerals 14 and 15 are switches such as vacuum switch tubes having different opening / closing characteristics, and fixed contacts 14a and 15a and movable contact 14 which are connected to an external circuit via bushings 16a and 16b.
b and 15b. In addition, each switch 14, 1
Reference numeral 5 is provided with a pressure contact device (not shown) so that a contact force acts between the fixed contacts 14a and 15a and the movable contacts 14b and 15b in the closed state. Reference numerals 17 and 18 denote links whose one ends are rotatably connected to the movable contacts 14b and 15b, and the other ends are rotatably connected to one ends of operation levers 19 and 20 described later. 19 and 20 have one end for each link 1
An operating lever rotatably connected to the other ends of the shafts 7 and 18 is rotatably supported by shafts 21 and 22. Reference numerals 23 and 24 are links whose one end is rotatably connected to the other ends of the operation levers 19 and 20, respectively. The link mechanism 25 is designated by 17, 19, 21, 23, and the link mechanism 26 is designated by 18, 20, 22, 24.
Is composed. Reference numeral 27 denotes a connecting shaft that rotatably connects the other ends of the links 23 and 24 and one end of an operation rod 28, which will be described later, and is guided by a guide groove 34, which will be described later, through a roller 27a. 28 is an operating rod having an insulating property, one end of which is rotatably connected to the other ends of the links 23 and 24 via a connecting shaft 27, and 29 is a drive mechanism which is operated by a command from a control device (not shown). . Reference numeral 30 denotes a connecting mechanism that rotatably connects an operating rod 28 and a drive mechanism 29.
3 and via sealed bearings. Reference numeral 31 is an insulating cylinder fixed to the container 13, and the operating rod 28 penetrates through the insulating cylinder. 32
Is a pair of frames supporting an insulating cylinder, and each link mechanism 2
5 and 26 and the vacuum switch tubes 14 and 15 are supported.

Reference numeral 33 is a guide means provided with a guide groove 34 for guiding the connecting shaft 27, and is fixed to the frame 32. The guide groove 34 is formed between the closing position 34a and the opening position 34b of the vacuum switch tubes 14 and 15 by the connecting shaft 27, that is, in the direction in which the movable contacts 14b and 15b move toward and away from each other. 27 is formed so as to move in the left-right direction at an angle of 90 degrees or less with respect to the contacting / separating direction. In FIG. 3, when the connecting shaft 27 is located at the closing position 34a, the center positions of the two link mechanisms 25 and 26 are set, and the two link mechanisms 2 and
The groove 34 is formed so that the grooves 5 and 26 are in the same state. The curve connecting the closing position 34a and the opening position 34b of the groove 34 determines the change in the speed of the movable contacts 14b and 15b. Therefore, a predetermined curvature is selected and the connecting shaft 27 moves the operating rod 28 up and down. And, it is formed so as to smoothly follow the left and right movements. Further, when the groove 34 moves from the closing position 34a to the opening position 34b, the position at which the direction changes to the left in the drawing of FIG. 3 becomes the operation displacement point of the switches 14 and 15, and the stroke difference between the switches 14 and 15 becomes large. Is the starting point of
Select the highest position in relation to the contact pressure stroke during closing operation.

Next, the operation will be described with reference to FIGS. In FIG. 1, the switches 14 and 15 are open. In FIG. 1, when the drive device 29 is activated by a closing command from a control device (not shown), the operation rod 28 moves upward in the drawing. The connecting shaft 27 connected to the insulating rod 28 has a guide groove 34.
Move along. Along with this, the operating lever 23 rotates clockwise and the operating lever 24 rotates counterclockwise via the links 23 and 24 connected to the connecting shaft 27. As a result, the movable contacts 14b and 15b move upward in the figure to come into contact with the fixed contacts 14a and 15a and enter the closed state as shown in FIG.

Since the connecting shaft 27 in the initial stage of the closing operation operates in a substantially vertical direction in the vicinity of the open position 34b of the groove 34, the switch 14 has a characteristic 35 and the switch 15 has a characteristic 36 in FIG. , The movable contacts 14b and 15b operate at the same speed. Characteristic 37 is a comparative example in which the guide groove is formed in a linear shape and the guide groove is arranged at the center position of the switch having the same characteristics.

When the connecting shaft 27 is turned rightward in the drawing along the groove 34 as the closing operation proceeds, on the switch 14 side, the link 23 moves leftward and the connecting shaft 27 moves rightward. The speed of the movable contactor 14b becomes slower as indicated by the characteristic 35 in FIG. On the other hand, on the switch 15 side, the speed of the movable contactor 15b increases as shown by the characteristic 36 in FIG. 6 due to the sum of the movement of the link 24 to the right and the movement of the connecting shaft 27 to the right. In this way, by selecting the angle of the groove connecting the insertion position 34a and the opening position 34b of the groove 34 with respect to both positions 34a and 34b,
The speed of each movable contact 14b, 15b can be adjusted.

As the closing operation proceeds further, each switch 14,
The movable contacts 14b and 15b of 15 operate at different speeds, respectively, and the connecting shaft 27 moves the insertion position 34a of the guide groove 34.
To reach the straight line in the vertical direction. Here, since the rightward movement of the connecting shaft 27 is stopped, the rightward movement of each of the links 23 and 24 is stopped. Since the closing position 34a is located at the central position of both switches 14 and 15,
As shown in FIG. 6, the movable contacts 14b and 15b have the same speed, and the movable contacts 14b and 15b come into contact with the fixed contacts 14a and 15a at the contact points shown in FIG. Then, a predetermined contact pressure stroke is operated, and the closing operation is ended at the operation end point shown in FIG. The insertion position 34 of the groove 34
By moving the position at which bending starts from a toward the open position 34b in the vertical direction in the figure, each switch 14, 1 is moved.
You can change the input point of 5.

Next, the opening operation will be described. In the closing state of FIG. 5, when the drive device 29 is activated by the opening command of the control device (not shown), the operation rod 28 starts moving downward in the drawing, but from the closing end point shown in FIG. 6 to the contact point. During the approaching pressure stroke, the fixed contacts 14a, 15
A necessary contact force is applied between a and the movable contacts 14b and 15b, and they are in a contact state. When the operation progresses further,
Both contacts 14a, 15a and 14b, 15b at the same speed
The gap is opened and an arc is generated. Then, subsequently, the movable contactor 14b of the switch 14 operates in the reverse direction of the characteristic 35 of FIG. 6, and the movable contactor 15b of the switch 15 operates in the reverse direction of the characteristic 36 of FIG. , Switch 14
The opening operation is performed at a higher speed.

When the opening distance required for interruption is reached, the current arc is interrupted. At this time, the switch 14 mainly has excellent current cutoff characteristics, and cuts off a large current in a short arc time. Then, the switch 15 is configured to open a switch having an excellent withstand voltage characteristic at a high speed, withstand a high transient voltage generated immediately after the break, and break a large current to a small current in a short arc time.

Embodiment 2 FIG. 7 is a configuration diagram schematically showing the second embodiment, and FIG. 8 is a front view showing a main part of FIG. In FIGS. 7 and 8, 14, 15, 19 to 24,
27 and 28 are the same as those in the first embodiment.
Reference numeral 38 is a guide means provided with a guide groove 39 for guiding the connecting shaft 27, and is fixed to the frame 32. The guide groove 39
The closing position 39a and the opening position 39b are the respective switches 14,
15 so that it is on the straight line of the center position
A protruding curved portion 39c is provided on the switch 14 side between a and 39b.

The operation of the above configuration from the open state to the closed state of FIG. 7 will be described. In FIG. 7, when the drive device 29 (see FIG. 1) is activated by a closing command from a control device (not shown), the operation rod 28 moves upward in the drawing. As a result, the connecting shaft 27 connected to the operating rod 28 is moved along the guide groove 39 from the open position 39b to the bending portion 3b.
You will be guided towards 9c. Then, when the connecting shaft 27 contacts the bending portion 39c, the connecting shaft 27 moves to the left, so that the moving speed at which the link 24 moves the operating lever 20 changes the curvature of the bending portion 39c as indicated by the characteristic 41 in FIG. It becomes slower depending on the degree, or becomes a stopped state depending on the selection of the curvature. On the other hand, since the movement of the link 23 is accelerated as shown by the characteristic 40 in FIG. 9, both the contactors 14a and 14b of the switch 14 come into contact with each other before the vacuum switch tube 15.

Further, the connecting shaft 27 has a curved portion 39c of the groove 39.
When passing through the leftmost end of FIG. 8 shown in FIG.
As shown in FIG. 0, the operating state slightly exceeds the position of the steady contact pressure stroke of the characteristic 37 in FIG. Next, the leftmost end of the bending portion 39c moves to the right inclined portion toward the closing position 39a. In this state, the movement of the link 24 is accelerated and moves as the characteristic 41 of FIG. The contacts 15a and 15b of the switch 15 contact each other. Then, as the stroke further progresses and the connecting shaft 27 moves beyond the leftmost end portion of the bending portion 39c, the switch 14 is operated beyond the steady contact pressure stroke position as shown by the characteristic 40 in FIG. It has become. Then, when the connecting shaft 27 reaches the line of the closing position 39a on the central axis, both switches 1
Both 4 and 15 stop after a contact pressure stroke at the same speed.

Embodiment 3. In FIG. 7 of the second embodiment, the curved portion 39c of the guide groove 39 is provided at the insertion positions 39a and 3a.
When the switch 15 is provided on the right side which is symmetrical with respect to the center line of the switch 9b, the switch 15 accelerates at the curved portion which first shifts to the right with respect to the switch 14 and contacts first. On the contrary, switch 1
No. 4 is stagnant and operates at a reduced speed. Then, in the bending portion that shifts to the left side through the rightmost end of the bending portion, the switch 14 is accelerated in the remaining stroke to operate at high speed, and finally, both switches 1
Nos. 4 and 15 are turned on.

Embodiment 4 In the second and third embodiments, the operating positions of the connecting shaft 27 are the closing position 39a and the opening position 39b.
It has been described that and are arranged on the same center line.
On the other hand, in FIG. 7, when the center line of the open position 39b is moved to the left in the figure, the operation of the first embodiment is approached. In this way, the insertion position 39 of the guide groove 39
By changing the central position between a and the open position 39b and the gradient and the degree of bending of the bending portion 39c, it is possible to obtain predetermined characteristics of closing / opening.

Embodiment 5 In FIG. 7, the connecting shaft 27
When the curved portion 39c that detours is formed in an arc shape having the same radius as the length of the link 24, the switch 15a movable contact 15b is in a stationary state when the connecting shaft 27 moves in the arc shape portion. Further, the switch 14 has a characteristic of double speed when both the switches 14 and 15 operate in balance.

Embodiment 6 FIG. FIG. 10 is a configuration diagram schematically showing the sixth embodiment. In FIG. 10, 14, 1
5, 17, 18, 23, 24, 27, 32, and 34 are the same as those shown in FIGS. 1 and 4 of the first embodiment. In addition, each of the switches 14 and 15 includes a movable contactor 14b,
It is arranged so that the movement direction of 15b is horizontal. The other end of the link 17 and one end of the link 23 are connected, and the other end of the link 18 and one end of the link 24 are rotatably connected. Reference numerals 42 and 43 denote links whose one ends are rotatably supported by the frame 32, and the other ends are rotatably connected to the other ends of the links 23 and 24, respectively.

Next, from the open state of FIG. 10, each switch 14,
The case of inputting 15 will be described. As in the first embodiment, when the operating rod 28 moves upward in the drawing in response to a closing command from a control device (not shown), the connecting shaft 27 causes the guide groove 3 to move.
4 moves in the direction from the open position 34b to the closing position 34a via the curved portion. In this case, each link 2
One end of each of the links 3 and 24 moves on the locus of the radius of each of the links 42 and 43 around the other end of each of the links 42 and 43. Embodiment 1 when the connecting shaft 27 starts to move from the open position 39b.
Similarly to the above case, the movable contacts 14b and 15b operate at the same speed. Then, when the curved portion connecting between the two positions 34a and 34b is reached, the speed of the movable contactor 14b of the switch 14 decreases and the speed of the movable contactor 15b of the switch 15 increases. Further, when the connecting shaft 27 moves along the straight line of the closing position 34a, the movable contacts 14b and 15b both have the same speed, and the movable contacts 14b and 15b come into contact with the fixed contacts 14a and 15b. After that, a predetermined contact pressure stroke is operated, and the closing operation is ended in the closing state shown in FIG.

Next, the opening operation will be described. In the closed state of FIG. 11, when the operating rod 28 moves downward in the figure by the opening command, both contactors 14a, 1 move at the same speed.
The electrodes 5a, 14b and 15b are opened to generate an arc. After that, the switch 15 performs the opening operation at a higher speed than the switch 14 by the operation opposite to that at the time of closing. Then, when the opening distance required for interruption is reached, the current arc is interrupted,
The open state shown in FIG. 10 is entered, and the open operation ends.

Embodiment 7 FIG. 12 is a configuration diagram schematically showing the seventh embodiment. In FIG. 12, 14, 1
5, 17, 18, 28 and 32 are the same as those in the first embodiment. 44 and 45 are operation levers rotatably supported on the frame 32 by shafts 46 and 47, respectively.
One end is rotatably connected to the other ends of the links 17 and 18, respectively. Reference numeral 48 is a guide means fixed to the operation rod 28.
A pair of guide grooves 49, 50 are formed in a direction including the drive direction of the operation rod 28 and a component at a right angle. Reference numerals 51 and 52 denote connecting shafts guided by the guide grooves 49 and 50 via the rollers 51a and 52a, respectively, and each operating lever 4
It is fixed to the other ends of 4, 45.

Next, from the open state of FIG. 12, each switch 14,
The case of inputting 15 will be described. As in the first embodiment, in the open state of FIG. 12, when the operating rod 28 moves upward in the drawing in response to a closing command from a control device (not shown), the connecting shafts 51, 52 are moved from the open position in the lower left of the drawing. It is guided by each of the guide grooves 49, 50, moves to the right in the drawing, and moves toward the loading position. As a result, the operation lever 44 is rotated counterclockwise, the operation lever 45 is rotated clockwise, and the movable contacts 14b and 15b are moved to the guide grooves 4 respectively.
After moving at a speed corresponding to the inclination angle of 9 and 50 and contacting with the fixed contacts 14a and 15a, the contact pressure stroke is operated and the closing operation is completed in the closing state of FIG.

Embodiment 8 FIG. 14 is a configuration diagram schematically showing the eighth embodiment, FIG. 15 is a front view in which a part of a main part of FIG. 14 is cut away, and FIGS. 16 and 17 are front views showing a main part of FIG. . 14 to 17, in FIGS.
17, 18, 27, 28 and 32 are the same as those in the first embodiment. An operation lever 53 is rotatably supported on the frame 32 by a shaft 54 and has one end rotatably connected to the other end of the link 17. The operation lever 53
As shown in FIG. 16, a guide groove 55 having an upward slope in the drawing including a component perpendicular to the driving direction (upward in the drawing) of the operating rod 28 is provided at the other end of the guide rod 28 to guide the connecting shaft 27. An operation lever 56 is rotatably supported on the frame 32 by a shaft 57 and has one end rotatably connected to the other end of the link 18. In addition, at the other end of the operation lever 56,
As shown in FIG. 17, there is provided a guide groove 58 having an upward slope in the drawing including a component perpendicular to the driving direction of the operating rod 28 (upward in the drawing), and guides the connecting shaft 27.

Next, the operation will be described. 14 to 1
When the operating rod 28 moves upward in the drawing in response to a closing command from a control device (not shown) in the opened state of 7, the connecting shaft 27 moves upward in the drawing and the guide grooves 58, 5 are relatively moved.
8 moves from the lower left open position to the upper right input position. As a result, the operation lever 53 rotates counterclockwise about the shaft 54, and the operation lever 56 rotates clockwise about the shaft 57 to move the movable contacts 14b, respectively.
After 15b moves at a speed corresponding to the inclination angle of each guide groove 55, 58 and comes into contact with each fixed contact 14a, 15a, the contact pressure stroke is operated to complete the closing operation.

Embodiment 9 FIG. 18 is a configuration diagram schematically showing the ninth embodiment. In FIG. 18, 14, 1
5, 17 to 24, 27, 28 and 32 are the same as those in the first embodiment. Reference numeral 59 is a guide link whose one end is rotatably supported by the frame 32 by a shaft 60, and the other end is rotatably connected to the operating rod 28 together with the links 23 and 24 by a connecting shaft 27.

Next, the operation will be described. In the open state of FIG. 18, when the operating rod 28 moves upward in the drawing in response to a closing command from a control device (not shown), the connecting shaft 27 moves in an arc shape by the locus of the guide link 59 centering on the shaft 60. And guides the other ends of the links 23, 24, one end of which is connected to the operating levers 19, 20. As a result, the movable contactor 14b of the switch 14 operates faster in the initial stage of the closing operation, and the movable contactor 15b of the switch 15 operates faster in the latter half of the closing operation, resulting in the closing state shown in FIG. To do. Vertical position of the shaft 60 and the guide link 5
By selecting the length of 9, the operating speed of each of the switches 14 and 15 and the closing time can be adjusted.

Embodiment 10 FIG. 20 shows the tenth embodiment.
It is a block diagram which showed typically. In FIG. 20, 1
4, 15, 17 to 24, 25 to 28 and 32 are the same as those in the first embodiment. Reference numeral 61 is a guide means provided with a guide groove 62 for guiding the connecting shaft 27, and is fixed to the frame 32. The guide groove 62 is provided for each switch 14, 15
However, the insertion position 62 formed so as to allow the movement of the connecting shaft 27 in the left-right direction within the predetermined range in the insertion state.
a and an open position 62b which is formed so as to regulate the movement of the connecting shaft 27 in the left-right direction in the open state.

Next, the operation will be described. When the operating rod 28 moves upward in the drawing in response to a closing command from a controller (not shown) in the open state of the switches 14 and 15 in FIG. 20, the connecting shaft 2 near the opening position 62b is the initial stage of the closing operation.
The movement of 7 is regulated. However, the latter half of the loading position 62a
Since the movement between the guide groove 62 and the connecting shaft 27 is allowed in the contact pressure stroke in the vicinity, each link mechanism 25,
26, the fluctuations of the contact positions of the switches 14 and 15 and the like are absorbed, and the closed state is maintained well.

In the process of operating the contact pressure stroke near the end of the closing operation, the left and right switches 14, 15 hardly contact simultaneously at the beginning of the contact pressure stroke due to various causes.
Either one is put in first. This is because each movable contactor 14 passes through the connecting shaft 27 and the link mechanisms 25 and 26.
This occurs because b, 15b and the operating rod 28 are mechanically connected. This is because each switch 1 is slightly different based on the characteristic difference due to the manufacturing accuracy of the link mechanisms 25 and 26, the variation in the contact position due to the assembly accuracy and the wear of the contacts, and the like.
It is difficult to avoid a difference in the operating characteristics of Nos. 4 and 15. However, by widening the guide groove 62 near the closing position 62a to allow the movement of the connecting shaft 27 within a predetermined range, it is possible to prevent a difference in operating characteristics between the switches 14 and 15.

Eleventh Embodiment 22 shows the eleventh embodiment.
23 is a configuration diagram schematically showing FIG. 23, FIG. 23 is a front view in which a main part of FIG. 22 is partially broken, and FIG. 24 is XXIV-XXIV of FIG.
It is sectional drawing of a line. In FIG. 22, 14, 15, 17
28 to 32 are the same as those in the first embodiment. Reference numeral 63 is a guide means having a guide groove 64 provided in the vertical direction in the drawing, and the shaft 6 having one end (downward in the drawing) fixed to the frame 32.
It is swingably supported by 5. Further, spring receiving portions 63a and 63b are formed at the other end of the guide means 63. 66
Is a holder fixed to the frame 32, and is provided with a sliding portion 66a which allows the other end of the guide means 63 to slide a predetermined distance. 67 and 68 are springs arranged between the spring receiving portions 63a and 63b and the holder 66, and are configured to hold the guide means 63 at the neutral position.

Next, the operation will be described. When the switches 14 and 15 shown in FIG. 22 are open and the operating rod 28 moves upward in the drawing in response to a closing command from a controller (not shown), the connecting shaft 27 moves upward in the drawing. Two
The loading state shown in FIG. 5 is entered, and the loading operation ends. When a difference occurs in the operation of the switches 14 and 15 in the contact pressure stroke of the closing operation, since the guide means 63 is supported by the springs 67 and 68 in a floating manner, the guide means 63 swings about the shaft 65. It moves so that the connecting shaft 27 always acts toward the center position.

Embodiment 12 FIG. FIG. 26 shows Embodiment 12
27 is a front view in which a main part of FIG. 26 is partially broken, and FIG. 28 is XXVIII-XX of FIG.
It is sectional drawing of the VIII line. 26 to 28,
14, 15, 17 to 28 and 32 are the same as those in the first embodiment. 67 is a guide groove 68 in the vertical direction in the figure
With the guiding means provided with, the sliding portions 67a and 67b that slide on a plane with a predetermined radius at each end, and the sliding portions 67a and 67b.
Spring receiving portions 67c and 67d are formed on the center side, respectively. Reference numerals 69 and 70 denote holders having receiving portions 69a and 70a with which the sliding portions 67a and 67b abut and slide, and are fixed to the frame 32, respectively. 71, 72 and 7
Reference numerals 3 and 74 denote springs disposed between the spring receiving portions 67c and 67d and the holding bodies 69 and 70, respectively, and floatingly support the guide means 67 so as to be in a neutral position in a balanced state. It should be noted that the links 23, 2 each having one end connected to the operation levers 19, 20
The other end of 4 is connected to the operating rod 28 so as to be guided by the guide groove 68 via the connecting shaft 27.

Next, the operation will be described. In the open state of the switches 14 and 15 shown in FIG. 26, when the operation rod 28 moves upward in the drawing in response to a closing command from a control device (not shown), the connecting shaft 27 is guided by the guide groove 68 and is moved upward in the drawing. 29, the loading state shown in FIG. 29 is reached, and the loading operation ends. In the contact pressure stroke of the closing operation, when there are slight mechanical load fluctuations and operational differences between the switches 14 and 15, there are sliding parts 67a and 67b provided at both ends of the guide means 67 and springs. Due to 71 to 74, a restoring force acts so that the guide groove 68 is located at the center position.

Embodiment 13 FIG. FIG. 30 shows the thirteenth embodiment.
FIG. In FIG. 30, 14, 15, 17,
18, 23, 24, 27 and 28 are the same as those in the first embodiment, and 42 and 43 are the same as those in the sixth embodiment. 75 and 76 are spring guides whose one end is rotatably supported on the frame 32 by shafts 77 and 78,
Guide grooves 79, 80 for guiding the connecting shaft 27 are provided.
Reference numerals 81 and 82 denote tension springs locked to the shafts 77 and 78 and the connecting shaft 27.

Next, the operation will be described. In the open state of FIG. 30, when the operating rod 28 moves upward in the drawing in response to a closing command from a control device (not shown), the spring guide 75
Rotates around the shaft 77 in the counterclockwise direction, and the spring guide 76 rotates around the shaft 78 in the clockwise direction.
Guide the connecting shaft along the intersection of 80. On the other hand, link 2
The links 3 and 24 rotate counterclockwise and the links 24 rotate clockwise while the movements of the links 3 and 24 are restricted by the connecting shaft 27 and the links 42 and 43.
15b is moved leftward and rightward in the drawing, respectively. As a result, each of the switches 14 and 15 enters the closed state as shown in FIG. 31, and the closing operation ends.

[0045]

According to the invention of claim 1, in the process of moving in the first direction in which the two switches are brought into contact with and separated from each other, the first direction is set in either direction in which the two switches are arranged. Since the guide groove for guiding the connecting shaft is provided so as to include the second direction having an angle of 90 degrees or less, the required operation of each switch can be obtained with a simple configuration by selecting the guide path of the guide groove. be able to. This makes it easy to adjust the operating speed,
The life of the contact can be extended.

According to the second aspect of the present invention, when both switches are closed, the width of the switch is made wider than that of the first guide groove, and the regulation of the movement of the connecting shaft is loosened from the first guide groove. Since the second guide groove is formed so as to be swingable to the side and formed continuously with the first guide groove, a good contact state can be obtained with a simple configuration even if the operating characteristics of the switches are different. be able to.

According to the invention of claim 3, a pair of guide grooves are provided in the operation rod, and each link mechanism is connected to the operation rod by the first connecting shaft and the second connecting shaft guided by the respective guide grooves. Therefore, by guiding each connecting shaft through the separate guide groove, the required operation of each switch can be selected with a simple configuration.

According to the invention of claim 4, since a pair of guide grooves is provided in each link mechanism and each link mechanism is connected to the operating rod by the connecting shaft guided by both guide grooves, each link mechanism is separately provided. The required operation of each switch can be selected with a simple configuration by guiding with the guide groove.

According to the invention of claim 5, one end of the guide link is rotatably connected to the connecting shaft, and the other end of the guide link is rotatable about a position near either of the two switches. Since it is supported by, the required operation of both switches can be obtained by selecting the center position and length of rotation of the guide link.

According to the invention of claim 6, one end of the guide means provided with the guide groove is swingably supported by the shaft, and the other end is swingable within a range compensating the deviation of the closing stroke. Since the other end of the guide means is pressed by the pair of springs to maintain the neutral position, the operations of both switches can be made the same and a good contact state can be obtained.

According to the invention of claim 7, both ends of the guide means provided with the guide groove are made swingable, and each end is pressed by a pair of springs so that the guide means holds the neutral position. Therefore, the operations of both switches can be made to be the same, and a good contact state can be obtained.

According to the invention of claim 8, in the switchgear according to any one of claims 1 to 7, since the first switch is a vacuum switch tube, a simple structure can be obtained. .

[Brief description of the drawings]

FIG. 1 is a front view showing a cross section of a part of a first embodiment.

FIG. 2 is a plan view showing a main part of FIG.

FIG. 3 is a front view showing a main part of FIG. 1;

FIG. 4 is a configuration diagram in an open state that schematically shows the main part of FIG. 1.

5 is an explanatory diagram of a closed state showing the operation of FIG. 4. FIG.

FIG. 6 is an explanatory diagram showing an operation process of the switch of the first embodiment.

FIG. 7 is an explanatory diagram of an open state that schematically shows a main part of the second embodiment.

FIG. 8 is a front view showing a main part of FIG.

FIG. 9 is an explanatory diagram showing an operation process of the switch according to the second embodiment.

FIG. 10 is a configuration diagram in an open state that schematically shows a main part of the sixth embodiment.

11 is an explanatory diagram of a closed state showing the operation of FIG.

FIG. 12 is a configuration diagram in an open state that schematically shows a main part of the seventh embodiment.

FIG. 13 is an explanatory diagram of a closed state showing the operation of FIG.

FIG. 14 is a configuration diagram in an open state, schematically showing a main part of the eighth embodiment.

FIG. 15 is a front view showing the main part of FIG.

16 is a front view showing the main part of FIG.

FIG. 17 is a front view showing the main part of FIG.

FIG. 18 is a configuration diagram in an open state, schematically showing a main part of the ninth embodiment.

FIG. 19 is an explanatory diagram of a closing state showing the operation of FIG. 18;

FIG. 20 is a configuration diagram in an open state, schematically showing a main part of the tenth embodiment.

FIG. 21 is an explanatory diagram of a closing state showing the operation of FIG. 20.

FIG. 22 is a configuration diagram in an open state, schematically showing a main part of the eleventh embodiment.

FIG. 23 is a partially cutaway front view of the main part of FIG. 22.

24 is a sectional view taken along line XXIV-XXIV in FIG.

FIG. 25 is an explanatory diagram of a closed state showing the operation of FIG. 22.

FIG. 26 is a configuration diagram in an open state, schematically showing a main part of the twelfth embodiment.

FIG. 27 is a front view in which a main part of FIG. 26 is partially broken.

28 is a cross-sectional view taken along the line XXVIII-XXVIII in FIG. 27.

FIG. 29 is an explanatory diagram of a closing state showing the operation of FIG. 26.

FIG. 30 is a configuration diagram in an open state, schematically showing a main part of the thirteenth embodiment.

FIG. 31 is an explanatory diagram of a closing state showing the operation of FIG. 30.

FIG. 32 is a front view showing a cross section of a part of a conventional opening / closing device.

[Explanation of symbols]

14,15 Switch, 25,26 Link mechanism, 27,
51,52 connecting shaft, 28 operation rod, 29 drive mechanism, 34, 39, 49, 50, 57, 58, 62, 6
4,68 guide groove, 62a second guide groove (closed position), 62b first guide groove (open position), 63,67
Guide means, 65 shafts, 66, 69, 70 holders, 6
7,68,71-74 Spring.

Claims (8)

[Claims] 1. A first switch and a second switch, with which each fixed contact and each movable contact come into contact with and separate from each other, are arranged at a predetermined interval, and are connected to each of the movable contacts. The link mechanism and the second link mechanism are connected to the operation rod via a connecting shaft arranged between the both switches, and the operation rod is driven by a drive mechanism to open and close the both contacts. In the switchgear, in the process in which the operating rod moves in the first direction in which the two contacts are brought into contact with and separated from each other, in the direction of either side where the two switches are arranged, the angle of 90 degrees or less with the first direction. An opening / closing device comprising a guide groove for guiding the connecting shaft so as to include a second angled direction. 2. A first switch and a second switch, with which each fixed contact and each movable contact come in contact with and separate from each other, are arranged at a predetermined interval, and are connected to each of the movable contacts. The link mechanism and the second link mechanism are connected to the operation rod via a connecting shaft arranged between the both switches, and the operation rod is driven by a drive mechanism to open and close the both contacts. In the opening / closing device, when the connecting shaft is driven by the drive mechanism via the operating rod in the first direction for opening both the switches, the connecting shaft is guided while being restricted in the driving direction of the operating rod. When the first guide groove and the connecting shaft are driven by the drive mechanism through the operation rod in the second direction in which the both switches are closed in the direction opposite to the first direction, the first guide groove and the connecting shaft are driven. Wider than the guide groove and regulated from the first guide groove And a second guide groove formed continuously with the first guide groove so as to swingably guide to the respective switch sides so as to compensate the deviation of the closing stroke of the respective switches. Switchgear characterized by that. 3. A first switch and a second switch for contacting and separating each fixed contact and each movable contact are arranged at a predetermined interval, and are connected to each of the movable contacts. An opening / closing device in which a link mechanism and a second link mechanism are connected to an operating rod, and the operating rod is driven by a drive mechanism to open and close between the both contacts, in a direction perpendicular to the driving direction of the operating rod. A pair of guide grooves formed in a direction including the component is provided on the operation rod, and the operation mechanism is connected to the operation rod by a first connecting shaft and a second connecting shaft that guide the link mechanisms by the guide grooves. Switchgear characterized by. 4. A first switch and a second switch, with which each fixed contact and each movable contact come into contact with and separate from each other, are arranged at predetermined intervals, and are connected to each of the movable contacts. An opening / closing device in which a link mechanism and a second link mechanism are connected to an operating rod, and the operating rod is driven by a drive mechanism to open and close between the both contacts, in a direction perpendicular to the driving direction of the operating rod. A pair of guide grooves formed in a direction including the component are provided in each of the link mechanisms, and the link mechanism is connected to the operation rod by a connecting shaft that guides the link mechanisms by the guide grooves. 5. A first switch and a second switch for contacting and separating each fixed contactor and each movable contactor are arranged at a predetermined interval, and are connected to each movable contactor first. The link mechanism and the second link mechanism are connected to the operation rod via a connecting shaft arranged between the both switches, and the operation rod is driven by a drive mechanism to open and close the both contacts. In the switchgear, a guide link is provided, one end of which is rotatably connected to the connecting shaft, and the other end of which is supported by a shaft so as to be rotatable about a position near either of the switches. Switchgear characterized by that. 6. A first switch and a second switch, with which each fixed contact and each movable contact come into contact with and separate from each other, are arranged at predetermined intervals, and are connected to each of the movable contacts. The link mechanism and the second link mechanism are connected to the operation rod via a connecting shaft arranged between the both switches, and the operation rod is driven by a drive mechanism to open and close the both contacts. In the opening / closing device, a guide means having a guide groove is provided in a direction in which the operation rod contacts and separates the two contacts, and one end of the guide groove where both the switches are in an open position is opened and closed by the guide means. It is supported by a shaft so that it can swing to the device side, and the other end of the guide means swings within a predetermined range by a holder so that the other end swings within a range that compensates for deviations in the closing stroke of each switch. Block and press the other end of the guide means with a pair of springs from both directions of swinging. An opening / closing device, characterized in that the guide means is held in a neutral position in a state where the acting forces of the springs are in equilibrium. 7. A first switch and a second switch, with which each fixed contact and each movable contact are brought into contact with and separated from each other, are arranged at predetermined intervals, and are connected to each of the movable contacts. The link mechanism and the second link mechanism are connected to the operation rod via a connecting shaft arranged between the both switches, and the operation rod is driven by a drive mechanism to open and close the both contacts. In the opening / closing device, a guide means having a guide groove is provided in a direction in which the operation rod contacts and separates the two contacts, and both ends of the opening and closing positions of the two switches are provided on the respective switches. , Each of which is supported by a pair of holding bodies so as to swing within a range that compensates the deviation of the closing stroke of each switch, and each end of the guide means is pressed by a pair of springs from both swinging directions. When the acting force of each spring is in equilibrium, the guide means is set to the neutral position. An opening / closing device characterized in that it is held at a table. 8. The switchgear according to claim 1, wherein the first switch is a vacuum switch tube.