JPS61256515A - Multi-circuit switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] purpose of invention (Industrial application field) This invention relates to a multi-circuit switch.

(Prior Art) Multi-circuit switches need to be made smaller because they need to be installed upright on sidewalks, etc., but in recent years, with the automation of underground power distribution, automation of multi-circuit switches has been desired.

(Problems to be Solved by the Invention) However, for automation, it is necessary to incorporate a closing solenoid or the like into the opening/closing mechanism of the multi-circuit switch.

In addition, due to the need for repair and inspection of multi-circuit switches, manual input and
It is also necessary to provide an operating mechanism that can be opened manually. In particular, in a manual operation mechanism equipped with a closing spring and an opening spring to reduce the operating force during early closing and opening, depending on the storage arrangement of the springs, opening/closing with the automatic closing mechanism and manual operation mechanism may be possible. The I structure has the problem of requiring a large storage space.

Structure of the Invention (Means for Solving Problems) This invention has been made to solve the above problems, and the multi-circuit switch of this invention has a solenoid for automatic closing at the top of the mechanism frame. A closing spring is placed on one side below the solenoid for quick closing drive when the solenoid is opened, and a release spring is placed on the other side for opening the solenoid when the solenoid is released. The gist thereof is to transmit the driving force of both the springs and the solenoid, and to provide an opening/closing operation mechanism that can be manually operated from the front.

(Function) With the above configuration, both springs are placed on both sides below the solenoid, and the mechanism is placed between them, so many parts such as links and levers are required to perform automatic closing, manual closing, and manual opening operations. Nevertheless, the spacing between them can be narrowed, and the storage space can be reduced.

(Example) Hereinafter, an example embodying this invention is shown in Figs. 1 to 17.
This will be explained according to the diagram.

In FIG. 1, a main body case 2 of an automatic air switch 1 installed vertically on a sidewalk or the like is formed into a box shape, and an opening 3 on the entire surface thereof is provided with an opening/closing door 4. Inside the main body case 2, there is an upper machine room 6 and a lower cable connection room 7 with the support plate 5 as the boundary.
It is divided into sections.

A base 8 and a control relay box 9 are mounted and fixed on the upper surface of the support Fi 5, and the base 5 has fixed electrodes (not shown) for three-phase five circuits integrated with an insulating synthetic resin such as epoxy resin. It is formed by being molded. Further, a power cable connection terminal 10 and a plurality of branch cable connection terminals 11 are provided on the lower surface of the base 8 and project downward through the support plate 5, and are connected to an N source cable 12 and a branch cable 13, respectively. There is.

Further, above the base 8, there are provided a plurality of opening/closing openings i14 each having a pair of #J electrodes (not shown) therein. When the opening/closing lid 14 is moved downward, its movable electrode (not shown) comes into contact with the fixed electrode (not shown) of the base 8 to be in the closed state, and when the opening/closing lid 14 is moved upward, the two electrodes are separated. It becomes open. This opening/closing m14 can be removed for each circuit.

An opening/closing section 15 is constituted by the base 8 and the opening/closing lid 14.

Further, above the opening/closing lid 14, an opening/closing IaM 416.17 for vertically moving each opening/closing lid 14 is provided for each circuit. That is, the opening/closing mechanism 16 of the power supply circuit is a manually operated mechanism, and is driven to close and open by attaching the operating handle and operating the operating handle to close and open.

Further, the opening/closing mechanism 17 of the remaining branch circuits is an automatic/manual operation mechanism, and can be automatically opened/closed by a control relay (not shown) in the control relay box 9, and an operation handle is attached. The closing/opening drive is performed by operating the operating handle to close/unload.

Next, the opening/closing mechanism 17 as an automatically/manually operable opening/closing operation mechanism will be described in detail.

In FIG. 5, a plurality of pillars 18 are erected on both the front and rear sides of the support plate 5, and a frame 19 is fixed to the upper part of the pillars 18. A mechanical frame consisting of a front frame 20 and a rear frame 21 is provided on the upper surface of the frame 19 for each circuit.

As shown in FIGS. 3 and 4, the front frame 20 has a pair of left and right side plates 2 whose lower ends are fixed to the front part of the frame body 19.
2.23 and a connecting plate 24 that connects the upper ends of the left and right side plates 22 and 23. The rear frame 21 is composed of a pair of left and right side plates 25 and 26 whose lower ends are fixed to the rear part of the frame body 19, and a connecting plate 27 which connects the upper ends of the left and right side plates 25 and 26.

In the front frame 20, a first fixed shaft 28 is installed between the lower portions of the left and right side plates 22 and 23. A first operating lever 29 is rotatably supported approximately at the center of the second fixed shaft 28 . A cylindrical operation handle mounting portion 30 that projects forward is formed at the upper portion of the first operation lever 29 . A locking hole 31 formed into an elongated hole is provided at the tip of the second operating lever 29 .

Further, a second operating lever 32 that rotates together with the first operating lever 29 is rotatably supported on the left end side of the first fixed shaft 28 . A first link 33 is rotatably supported on the upper part of the second operating lever 32.
A second link 34 is rotatably attached at one end to a shaft 33a.

The tip of the second operation lever 32 extends so as to be able to be engaged with the shaft 33a, and when it is engaged with the shaft 33a, the second link 34 is moved upwardly via the same shaft 33a. There is. A third link 3 is provided at the other end of the second link 34.
5 is rotatably attached to a shaft 34a.

In the front frame 20, a second fixed shaft 36 is installed between the rear central portions of the left and right side plates 22 and 23, and in the rear frame 21, the left and right side plates 25.
A third fixed shaft 37 is installed between the lower portions of the shafts 26 .

A first driven lever 38 is rotatably supported at the center of the second fixed shaft 36 in correspondence with the second operating lever 32 . The other end of the third link 35 is rotatably attached to a shaft 35a at the front end of the third driven lever 38.

A stopper member 39 having a channel-shaped cross section is rotatably supported on the shaft 34a, and connects the shafts 33a and 35a to both upper and lower ends of a connecting plate 39b that connects both side plates 39a of the stopper member 39. Axis 34 around dead point A
The side edges of the third link 35 and the second link 34 in the rear folded state a, which is exceeded by a, (referring to the state shown in FIG. 5), are engaged with each other to maintain this state. Moreover, the shaft 35a
A torsion spring 35b is wound around the torsion spring 35b.
As a result, the third link 35 is always urged to rotate counterclockwise with respect to the first driven lever 38.

As shown in FIG. 9, at a position to the left of the first driven lever 38 on the second fixed shaft 36, an opening force storage lever 40, which is integrally connected to the first driven lever 38, is rotatably supported. The distal end thereof extends downward and is provided with a bottle 40a. An opening spring 41 made of a tension spring is hung between the bottle 40a and the third fixed shaft 37, and when the opening force storage lever 40 is rotated clockwise in FIG. It is becoming more and more powerful.

As shown in FIG. 5, a second driven lever 42 is rotatably supported on the second fixed shaft 36 at a position to the right of the first driven lever 38, and its distal end is formed in a shape that widens toward the end. A locking pin 43 is protruded from the rear side of the tip of the second spinning lever 42 and can be locked to the upper surface of the rear end of the first driven lever 38 .

A sliding pin 44 is provided protruding from the side of the tip end of the second driven lever 42, and is transparently provided at the other end of a lock release plate 45 whose one end is rotatably supported on the shaft 34a. It is slidably linked to the sliding hole 46 .

When the second driven lever 42 rotates clockwise when the second link 34 and the third link 35 are in the rearward bent state as shown in FIG. is driven to press and lock the front end of the sliding hole 46. When the lock release plate 45 is pressed by the sliding pin 44, the lock release plate 45
The shaft 34a crosses the dead point A connecting the shafts 33a and 35a via the second link 34 and the third link 3.
The folded state shown in FIG. 5 changes from the folded back state shown in FIG. 5 to the folded forward state shown in FIG.

In FIG. 5, a drive lever 47 that rotates together with the second driven lever 42 is rotatably supported at the center of the second fixed shaft 36, and its tip extends rearward. . A swing lever 48 extending forward is rotatably supported on the third fixed shaft 37 in correspondence with the drive lever 47;
The tip of the drive lever 47 is linked to the tip of the drive lever 47 via a connecting link 49.

Further, an interlocking link 50 is rotatably supported at the tip of the swing lever 48, and the lower end of the interlocking link 50 is rotatably connected to the upper part of the movable frame 51.

A torsion spring 48a wound around the third fixed shaft 37 is hung on the swing lever 48.
8 is biased to rotate in the opening direction (clockwise direction).

As shown in FIGS. 1 and 2, the movable frame 51 is connected at both front and rear ends of the r#1 closing lid support 52 and the opening/closing lid support 52 extending back and forth, and is connected to the support column 18. A guide tube 53 is slidably inserted therethrough. Then, the opening/closing M with respect to the opening/closing lid support 52
14 is removably supported.

As shown in FIG. 3, a first engagement lever 54 is rotatably supported on the first operating lever 29@right side of the first fixed shaft 28, and as shown in FIG. An engaging pin 55 is provided that extends to the side and engages in the locking hole 31 of the first operating lever 29. The engaging pin 55 is connected to the locking hole 31 of the first operating lever 29 when the first operating lever 29 is rotated in the closing direction (counterclockwise) or in the opening direction (clockwise) by the loading/unloading operation. is selectively locked to both ends of the lever 54, thereby rotating the first series engagement lever 54 in the closing direction (counterclockwise direction) or in the opening direction (clockwise direction).

A second link lever 56 is located to the right of the first link lever 54.
are integrally connected and fixed, and are rotatable together with the first engagement lever 54 about the first fixed shaft 28. At the top of the base end of the second link lever 56, a first link 57 is rotatably mounted on a shaft 56a, and at the tip of the first link 57, a second link 58 is attached at one end. It is rotatably mounted on a shaft 57aW. A torsion spring 56b, which is attached to the first link 57, is wound around the shaft 56a.
is rotated clockwise in FIG. 10.

The tip of the second linking lever 56 is connected to the first linking lever 5.
The shaft 57 extends obliquely slightly downward from the tip of the shaft 57.
a can be locked from below, and when it is rotated counterclockwise and locked to the shaft 57a, the second link 58 is moved upward via the same shaft 57a.

A third driven lever 59 is integrally connected and fixed to the right side of the second driven lever 42 on the second fixed shaft 36 . This third driven lever 59 includes a pair of lever plates 60a,
60b are connected to each other at their upper proximal ends.

The third driven lever 59 is rotatable together with the second driven lever 42 relative to the second fixed shaft 36. A third link 61 is rotatably attached to a shaft 61a at the tip of the third driven lever 59, and the other end of the second link 58 is rotatably attached to the tip of the third link 61. The shaft 58a is served.

Further, a lock plate 62 is rotatably supported between lever plates 60a and 60b of the third driven lever 59 on the second fixed shaft 36. The lock plate 62 has a lower end formed in an arc shape, and a lower front side bulges forward, and one end of the fourth link 63 is rotatably attached to a shaft 63a in the bulge. It is worn. The other end of the fourth link 63 is rotatably supported on the shaft 58a.

Further, when the lock plate 62 is held in the locked position state (in the state shown in FIGS. 11 and 12), one end of the second link 58 is closed when the first link lever 54 is turned on. is locked to the upper front side portion of the lock plate 62, so that the shaft 58a is held in a state where it crosses the dead point 8 connecting the shafts 61a and 63a to the rear side.

As shown in FIGS. 14 and 15, the first fixed shaft 28
At a position to the right of the second linking lever 56, a third linking lever 64, which is integrally linked with the second linking lever 56, is rotatably supported, and its tip end is connected to the first linking lever 54. , and one end of the first connecting link 65 is rotatably connected to the shaft 65 .
a has arrived.

A manual lock release drive lever 66 is rotatably supported at the center of the second fixed shaft 36 in correspondence with the third linking lever 64 . The other end of the first connecting link 65 is rotatably supported at the front end of the manual lock release drive lever 66.

Similarly, on the second fixed shaft 36, an input power storage lever 67, which is separate from the manual lock release drive lever 66, is rotatably attached to the right side of the manual lock release drive lever 66. The tip portion extends in a dogleg shape, and the spring guide plate 68 is rotatably mounted on a shaft 67al. Further, the shaft 65a of the third link lever 64 and the input power storage lever 67
Both ends of the second connecting link 105 are rotatably supported on the shaft 67a.

The input power storage lever 67 is connected to the third fixed shaft 37.
A spring support rod 69 is rotatably supported at a position corresponding to , and an elongated guide hole 70 is provided in the longitudinal direction of the spring support rod 69 . The spring guide plate 68 can reciprocate in the longitudinal direction by inserting a pin 71 fixed to the spring guide plate 68 into the guide hole 70.

At the base end portions of the spring guide plate 68 and the spring support rod 69, locking step portions 68a and 69a are formed.

A closing spring 72, which is a coil spring whose both ends are locked, is wound between the locking step portions 68a and 69a, and the closing force storage lever 67 is rotated counterclockwise in FIG. It is designed to store energy when

The shaft 67a is located at the top of the tip end surface of the third linking lever 64.
A locking protrusion 73 that can be locked from above is formed on.

That is, when the third linking lever 64 is rotated clockwise, the locking protrusion 73 rotates the charging storage lever 67 counterclockwise via the shaft 67a. ing.

Then, when the input force accumulation lever 67 is rotated counterclockwise and the shaft 65a passes downwardly over the dead point C connecting the shafts 28 and 67a, the input spring 72 is held in the force accumulation state. It looks like this.

A stopper support piece 74 having a stopper 75 is fixed to the inner surface of the upper part of the side plate 23 of the front frame 20. When the third linking lever 64 is rotated in the rotational direction), the third linking lever 64 is locked and restricts the amount of rotation.

As shown in FIGS. 4 and 10, the front frame 20
A support member 76 having a channel-shaped cross section is fixed to the frame body 19 between the rear frame 21 and the rear frame 21 . A trip coil 77 is fixed to the rear part of the support member 76 via a support member 78. A plunger 77a protruding from the top of the trip coil 77 is attracted and moved downward when the trip coil 77 is energized, and is moved upward by a biasing spring 79 wound around the plunger 77a when the trip coil 77 is demagnetized. It is set to return.

In FIG. 16, an automatic lock release lever 80 is rotatably mounted on a shaft 80a at the upper part of the support member 76.
The rear end of the automatic lock release lever 80 is formed into a substantially U-shape and is rotatably supported by the upper end of the plunger 77a. Furthermore, an engagement recess 81 is formed at the lower front end of the automatic lock release lever 80 . moreover,
A torsion spring 90 wound around the shaft 80a is latched onto the automatic lock release lever 80, so that the pressing lever 8 is always engaged.
9 to rotate clockwise.

Further, a lower end portion of a latch lever 82 is rotatably mounted on a shaft 82a between the front center portions of the side wall of the support member 76.
At the upper end thereof, an engagement O-ru 83 which can be latched onto the engagement recess 81 of the automatic lock release lever 80 is rotatably pivoted. The shaft 82a of the locking lever 82
A biasing spring (not shown) is wound around the latch lever 8, so that the latch lever 8 is always
2 in a counterclockwise direction,
Further, when the automatic lock release lever 80 is rotated clockwise, the engagement recess 81 can be separated from the engagement roller 83.

A transfer roller 84 is rotatably supported in the center of the latch lever 82 . As shown in FIG. 16, the transfer roller 84 is locked to the rear side of the lock plate 62 when the engagement roller 83 is engaged with the engagement recess 81 of the automatic lock release lever 80. The lock plate 62 is held in the lock position.

Furthermore, the locking lever 82 is arranged so that when the engagement roller 83 is disengaged from the engagement recess 81, the locking plate 62 is free to rotate counterclockwise.
4 is adapted to be transferred along the lower end of the lock plate 62.

Note that a stopper bin 6 is provided on the rear side of the lock plate 62.
' 2 a is fixed, and when the lock plate 62 is rotated clockwise, both ends of the stopper pin 62 a are engaged with the upper surface of the locking piece 76 a that protrudes from the center of the front part of the support member 76 , and the rotation is stopped. It is designed to regulate the amount of movement.

A shaft 66 is provided at the rear end of the manual lock release drive lever 66.
A lock release link 85 is provided via a. That is, the lock release link 85 has the shaft 66a attached to a long hole 85a formed in the front end thereof so as to be able to vibrate.

[The rear end of the cock release link 85 is rotatably attached to the front base end of a lock release operating lever 87, which is rotatably mounted on a shaft 87as on the outer surface of the right side wall of the support member 76. ing. Note that an adjustment bolt 86 is interposed in the center of the lock release link 85. The length of this lock release link 85 is determined by adjusting the adjustment bolt 86 so that the shaft (35a) crosses the dead point C backward from the state shown in FIG. 15 and the automatic lock release lever 80 rotates at the same time. It has been adjusted.

A release pin 88 projecting toward the automatic lock release lever 80 is provided at the upper end of the lock release operating lever 87 . A press lever 89 is rotatably supported on a shaft 80a that rotatably supports the automatic lock release lever 80, and the rear side of the press lever 89 is connected to the U-shaped part of the automatic lock release lever 80. It can be locked to the base of the rear end, and its upper end extends on the rotation locus of the release pin 88 in the lock release operation lever 87, and extends so as to be able to come into contact with the release pin 88. It's being served. Furthermore, a twist spring 89a is wound around the shaft 80a,
One end of the lever is locked to the upper edge of the automatic lock release lever 80, and the other end is locked to the upper end of the pressing lever 89, so that the pressing lever 89 is always biased clockwise. .

Therefore, when the lock release lever 87 is rotated from the state shown in FIG. 11 (the release pin 88 is in the P position in FIG. 16) in the release direction (clockwise in FIG. 11), The release pin 88 presses and locks on a pressing lever 89, and the automatic lock releasing lever 80 is rotated clockwise through the pressing lever 89 against the biasing force of the biasing spring 79. .

Further, the pressing lever 89 is free to rotate counterclockwise, and the lock release operating lever 87 is in the 16th position.
When the rotation is returned from the Q position to the P position in the figure, the release pin 88 comes into contact with the rear surface of the pressing lever 89, and then the pressing lever 89 is pressed and rotated counterclockwise to easily release the release pin. 88 can overcome this pressing lever 89 and return to the normal state.

As shown in FIG. 10, a closing solenoid 91 is fixed by bolts between the connecting plates 24 and 27 of both the front and rear frames 20 and 21. A plunger 92 protruding from the front of the solenoid 91 is attracted and moved forward when the solenoid 91 is energized. The plunger 92
A fourth fixed shaft 93 is installed between the upper parts of the front frame 20 at a lower position, and a single-shaped automatic drive lever 94 is rotatably mounted on the fourth fixed shaft 93 at its center. supported.

Both ends of a pressure link 95 are rotatably pivoted between the upper end of the automatic drive lever 94 and the plunger 92. A pull-up lever 96 is rotatably supported on the fourth fixed shaft 93 separately from the automatic drive lever 94, and has a channel-shaped cross section so as to surround the front and both sides of the automatic drive lever 94. At the same time, the rear surface of the connecting portion connecting the left and right sides can come into contact with the front surface of the upper end of the automatic drive lever 94.

That is, when the automatic drive lever 94 rotates counterclockwise, the automatic drive lever 94 moves to the pull-up lever 96.
The lifting lever 96 is rotated in the same direction by pressing the connecting portion. Further, the front surface of the central portion of the automatic drive lever 94 is formed in a 1/4 arc shape, and when the pull-up lever 96 is rotated counterclockwise by a pull-up link 100, which will be described later, the front face of the automatic drive lever 94 is It is designed so that it does not interfere.

As shown in FIGS. 3 and 4, an operating bin 97 is fixed to the outer surface of the left side of the lifting lever 96.
When rotated counterclockwise, the actuator LSa is pressed to operate the limit switch LS fixed to the upper outer surface of the side plate 22 of the front frame 20. The limit switch LS is electrically connected to the control relay, and the operation of the limit switch LS sends a signal for demagnetizing the closing solenoid 91 and preparing to operate the trip coil to the control relay,
Thereafter, the closed state is maintained by a link mechanism.

An auxiliary plate 98 is installed between the side plates 22 and 23 of the front frame 20 at a position slightly above the center, and a stopper 99 is installed at a position corresponding to the automatic drive lever 94.
is fixed. The stopper 99 restricts the amount of rotation of the automatic drive lever 94 when it is rotated clockwise.

A lifting link 10 is provided at the right end of the lifting lever 96.
The lower end of the pull-up link 100 is rotatably supported on the upper end of the pull-up link 100 and is integrally connected to the upper end of the pull-up link 100 via an azimuth bolt 101.
It is pivotally supported for rotation with respect to a.

An operating link 102 is rotatably supported on the shaft 61a, and an elongated hole 103 is formed in the longitudinal direction of the operating link 102. 104 is slidably engaged.

When the third driven lever 59 is rotated clockwise, the operating link 102 moves upward and the elongated hole 103
When the lower end of the first link 57 is engaged with the bin 104, the first link 57, which is in the open position, is rotated counterclockwise.

By rotating the first link 57 in the counterclockwise direction, the shaft 58a located in front of the dead point B connecting the shafts 61a and 638 via the second link 58 shown in FIG. I try to cross backwards from point B.

Next, the operation of the opening/closing mechanism section 17 in the automatic air switch 1 configured as described above will be explained.

■Manual input Now, if manual input is performed from the manual and automatic release state, in this state, as shown in FIG. 5, the second link 34.
The third links 35 are respectively locked by the stopper members 39 and are in a rearward bent state, and the shafts 34a are positioned rearward with the dead point A as a boundary. Also, the power storage lever 4 for opening
0 is pulled by the release spring 41 and located at the solid line position as shown in FIG. 9, and as shown in FIGS.
is held in the locked position. As shown in FIG. 14, the closing spring 72 is held in the loaded state by the closing lever 67.

In this state, the operation handle attachment part 3 of the first operation lever 29
0, and the first operating lever 29 is rotated counterclockwise using the operating handle. Then, the second operating lever 32, which is integrated with the first operating lever 29, engages the shaft 33a of the first link 33 at its tip.
move up.

Due to the upward movement of this shaft 33a, the second link 3
4 and the third link 35 are supported by the stopper member 39 in a backward bent state, the second link 34 and the third link 35 move upward in this backward bent state.

Then, the first driven lever 38 rotates clockwise about the second fixed shaft 36. By the clockwise rotation of the first driven lever 38, the opening power storage lever 40 is also rotated in the same direction, and as a result, the bin 4 of the opening power storage lever 40 is rotated in the same direction.
0a pulls the release spring 41 and stores force.

Furthermore, when the lower end of the locking hole 31 of the first operating lever 29 comes into contact with the engagement pin 55 of the first series engaging lever 54 due to the counterclockwise rotation of the first operating lever 29, the first series engaging lever 54 is moved. Rotate counterclockwise. This rotation of the first link lever 54 causes the tip of the second link lever 56, which is integrally connected to the first link lever 54, to move the shaft 57a of the first link 57 upward. ' Then, the second link 58 and the third link 61 are moved upward while being regulated by the fourth link 63, and as a result, the third driven lever 59 is pressed by the third link 61 and moved clockwise. Rotate.

When the third driven lever 59 rotates clockwise,
Drive lever 47 shown in FIG. Connecting link 49. Link 50. The movable frame 51 supporting the opening/closing M14 via the swing lever 48 is vertically moved downward.

When the first linking lever 54 rotates in the counterclockwise direction, the third linking lever 64, which is integral with the first linking lever 54, is also rotated in the same direction. Fixed shaft 28. The shaft 65a, which was located below the dead point C connecting the shafts 67a, crosses the dead point C above. Then, the stored force of the input spring 72 suddenly pushes the shaft 67a in the direction of the third linking lever 64.
The third driven lever 59 is rapidly rotated in the clockwise direction via the second link lever 5G, the second link 5B, and the third link 61, and the second driven lever 59 is rotated counterclockwise. Lever 42. The drive lever 47 is made to perform a single closing operation. Note that the clockwise rotation of the input power storage lever 67 continues until the third link lever 64, which is connected to the input power storage lever 67 via the second link 105, comes into contact with the stopper 75 and is locked. It will be done.

Then, as shown in FIG. 11, the third driven lever 59 is rotated clockwise and the second linking lever 56 is rotated counterclockwise.
As the shaft 58a connecting the third link 61 and the fourth link 63 is rotated in the upward direction, the shaft 58a connecting the third link 61 and the fourth link 63 is pressed by the second link 58, causing both links 61 and 63 to bend backward, and the shaft 61a,
A toggle state is formed in which the shaft 58a is located rearward with a dead point B connecting between the shafts 63a and 63a as a boundary, and the shaft 58a is locked. In addition,
In this state, the third link 61 is locked to the upper front side portion of the lock plate 62.

Then, during this single closing operation, the first operating lever 29 is further rotated counterclockwise, and the first driven lever 38 is further rotated through the second link 34 and the third link 35. It is rotated clockwise until it reaches the state shown in Figure 6.
Further, the opening force storage lever 40, which is integrally connected to the first driven lever 38, is rotated to the position indicated by the chain line in FIG. 9 to further pull the opening spring 41 (accumulate force).

On the other hand, at this time, the second driven lever 42, which rotates together with the input power storage lever 67, follows the input power storage lever 67 due to the biasing force of the input spring 72, as shown in FIG. 43 is rotated until it is locked to the upper surface of the rear end of the first driven lever 38.

At this time, as shown in FIG. 11, the third driven lever 59 is in a locked state so that the shaft 58a does not rotate counterclockwise beyond the dead point B backward, so the first driven lever 38 also ends up being locked. The opening force accumulation lever 40 which is locked and therefore integrally connected to the first driven lever 38 is held in a force accumulation state where it is pulled by the release spring 41.

Also, when the second driven lever 42 rotates clockwise during this single-throwing operation, the sliding bin 44
slides forward inside the slide hole 46.

Then, the sliding pin 44 presses the front end of the vibration hole 46 to move the shaft 34a forward via the lock release plate 45,
Further, when the second driven lever 42 reaches the final locking position, the second link 34. 3rd link 35 to 5th link
From the rear folded locked state shown in the figure to the forward folded state on the opposite side (see Figure 6).

The opening/closing M1 supported by the opening/closing lid support 52 in this way
4 operates as a single input.

Note that during this manual closing operation, when the third driven lever 59 is rotated clockwise, the pull-up lever 96 is rotated counterclockwise via the pull-up link 100; Since the lever 94 is separate from the pull-up lever 96, it cannot be rotated in the same direction.

■Automatic loading Next, automatic input will be explained.

5, 9, and 1 as in the explanation of the manual input operation above.
The explanation will be made starting from the open state shown in FIG. 0, FIG. 14, and FIG. 16.

When the closing solenoid 91 is energized from the state shown in FIG. 10, the plunger 92 is attracted and moves forward. By this operation of plunger 92, automatic drive lever 94 is rotated counterclockwise via pressure link 95, and presses pull-up lever 96 in the same direction. As a result, the pull-up lever 96 is rotated in the same direction and pulls up the third driven lever 59 via the pull-up link 100. Then, the third driven lever 5
9 is rotated clockwise, and the second driven lever 42 and drive lever 47 are closed.

Further, at this time, the pulling link 100 is moved to the third driven lever 5.
9 in the clockwise direction, the operating link 102 is simultaneously moved upward. And the working link 10
The lower end of the second elongated hole 103 is the first link 51 of the bottle 10.
4, the first interlocking link 57 is rotated counterclockwise about the shaft 56a.

Then, by moving the second link 58 upward, the third link 61 and the fourth link 63 are connected to the shaft 61a and the shaft 63 via the second link 58, as shown in FIG.
The shaft 58a crosses the dead point B connecting between a and
The third link 61 and the fourth link 63 are in a locked state in which they are folded backwards. Note that the third link 6.1 is locked to the upper front side portion of the lock plate 62 in this state.

Note that during manual closing, the first driven lever 38 was manually rotated in the clockwise direction prior to the second driven lever 42; however, during automatic closing, the second driven lever 42
As the lever rotates in the clockwise direction, the first driven lever 38 is pushed by the locking pin 43 and rotates in the clockwise direction, resulting in the state shown in FIG.

Furthermore, when the pull-up lever 96 is rotated counterclockwise at this time, the actuating pin 97 fixed to it comes into contact with the actuator LSa, operating the limit switch LS, and sending a signal to the control relay to demagnetize the solenoid 91. let

In this way, the automatic loading operation is completed (see FIGS. 7 and 12).

In addition, at the time of this automatic injection, as shown in FIG. 7, the first to third link links 33,
34 and 35 are moved upward by the first driven lever 38,
The first link 33 is only rotated relative to the second operating lever 32, and the second operating lever 32 does not operate.

Furthermore, the third link lever 64. Since the second linking lever 56 does not operate, the shaft 65a is replaced by the shaft 67a as shown in FIG.
Since the closing spring 72 is located below the dead point C connecting the first fixed shaft 28 and is held in a toggle state and locked, the closing spring 72 remains loaded unlike in the case of a manual closing operation.

■Manual release First, the state of manual input, that is, the state of the opening power storage lever 40 shown in chain lines in FIGS. 6 and 9, and the state shown in FIGS. 11 and 15.
The case where manual release is performed from the state shown in the figure will be explained. Note that in this state, the release spring 41 is in a stored power state, and the closing spring 72 is in a state in which the stored power is released.

The first operating lever 29 is operated by an operating handle (not shown).
When the locking hole 31 is rotated clockwise, the engaging pin 55 at the upper end of the locking hole 31 comes into contact with the upper end of the locking hole 31 and is rotated clockwise, so that the locking pin 55 is fixed. Similarly, the first link lever 54 is rotated clockwise.

Then, as shown in FIG. 15, the closing force storage lever 67 is rotated counterclockwise via the second connecting link 105 connected to the third connecting lever 64, and the closing spring 72 is compressed by the shaft 67a. Energy is stored, and the shaft 65a becomes the first fixed shaft 28.
By crossing the dead point C connecting the shaft 67a to the rear, the locking protrusion 73 of the third linking lever 64 is locked to the shaft 67a, and in this state, the closing spring 72 for closing is held in a compressed and stored state. (See Figure 14).

On the other hand, when the third link lever 64 is rotated clockwise, the manual lock release drive lever 66 is rotated counterclockwise about the second fixed shaft 36 via the first link 65. . This rotation in the counterclockwise direction causes the shaft 66a to
When the lock release lever 87 is pressed against the front end of the elongated hole 85a of the lock release link 85, the lock release operating lever 87 is rotated clockwise about the shaft 87a via the lock release link 85.

Then, by rotating the lock release operating lever 87 in the clockwise direction, the release pin 88 is moved to the position 'rJ'P shown in FIG.
At this time, the automatic lock release lever 80 is rotated clockwise against the biasing force of the bias spring 79 as the release pin 88 presses and locks the pressure lever 89 . This clockwise rotation of the automatic lock release lever 80 is performed at the same time as the shaft 65a crosses the dead point C.

As a result, the engagement roller 83 of the latch lever 82 is disengaged from the engagement recess 81 of the automatic lock release lever 80, so the latch lever 82 is rotated clockwise around the shaft 82a. Ru.

This clockwise rotation of the locking lever 82 releases the locked state of the lock plate 62, so that the opening force storage lever 40. No. 1 driven lever 38. Locking bottle 43. The second driven lever 42 rotates the release spring 4 around the second fixed shaft 36.
1, the shaft 63a of the lock plate 62 rotates the third driven lever 59 counterclockwise via the fourth link 63 and the third link 61. In order to move the drive lever 47.31, the link 49. Swing lever 48. The movable frame 51 is pulled up via the link 50, and the opening/closing M14 is opened.

Note that when the lock plate 62 is unlocked, the second link ring 58 and the fourth link 63 open from the state shown in FIG. 11, but the second link lever 56 does not move. After the lock It 162 is rotated counterclockwise to the state shown in FIG. 17, the first link 57 follows the second link lever 56 by the twist spring 56t provided on the shaft 56a. For rotation in the clockwise direction about the shaft 56a, the second link 58. The lock plate 62 is rotated clockwise via the fourth link 63 from the state shown in FIG. 17 to the position shown in FIG.

Then, the locking lever 82 is rotated counterclockwise by a biasing spring (not shown), and the transfer roller 84 is locked to the lower rear side of the lock plate 62, and the engagement roller 83 at the upper end thereof is locked. The lock plate 62 returns to its original locked state as shown in FIG. 16 by being locked in the engagement recess 81 of the automatic lock release lever 80 which is biased and rotated counterclockwise by the bias spring 79. do.

As a result, the state from the manually closed state to the manually released state is the fifth
The state shown in FIG. 10 is reached.

Next, the case of manual release from the automatic closing state will be explained. Note that in this automatic closing state, the closing spring 72. Both the release springs 41 are in a power storage state.

FIG. 7 shows the state in which the first operating lever 2 is automatically loaded.
9 is the open position state. In this state, when the first operating lever 29 is rotated in the closing direction, that is, counterclockwise, via the operating handle (not shown), the lower end of the locking hole 31 is pressed into contact with the engagement bin 55 .

Then, in FIG. 12, the first link lever 54 is rotated counterclockwise around the first fixed shaft 28, and in FIG. 14, the third link lever 64 is rotated counterclockwise, and the shaft 65a is rotated. exceeds the dead point C upwardly, the closing spring 72 is pressed, and the mechanism is set to the manual closing state. However, the opening/closing 1i14 is already in an automatically closed state and does not move.

The manual closing state can be set by the above operation, and the imitation opening operation is the same as the manual opening operation described above.

■Automatic release Next, we will explain the case of automatic release from the manual closing state.

In the states shown in FIGS. 6, 11, 15, and 16, when the trip coil 77 is excited, the plunger 77
a is moved downward by suction, and the automatic lock release lever 80 is moved to the shaft 80.
It is rotated clockwise around a. Then, the locking lever 82 is released from the engagement recess 81 of the automatic lock release lever 8°.
Since the engagement of the engagement lever 83 is released, the locking lever 82 is rotated clockwise about the shaft 82a.

When the locking lever 82 is rotated clockwise, the locking state of the locking plate 62 is released.
The third driven lever 59 can be rotated counterclockwise from the shaft 63a via the fourth link 63 and the third link 61. Therefore, the opening power storage lever 40. First driven lever 38° locking pin 43. The second driven lever 42 is rapidly rotated counterclockwise about the second fixed shaft 36 by the accumulated force of the release spring 41, and the drive lever 47° connecting link 49. Swing lever 48. The movable frame 51 is pulled up via the link 50, and the fP close M 14 is opened (see FIGS. 8 and 13).

Note that when the lock plate 62 is unlocked, the second link 58 and the fourth link 63 open from the state shown in FIG. 11, but the second link lever 56 does not move.

Also, in this case, the first link 57 is connected by the twist spring 56b.
Since the shaft 57a is supported by the second link lever 56, even if the link 5 is biased to rotate clockwise, the second link 5
8. The lock plate 62 is connected to the 17th link via the fourth link 63.
It is held in the state shown in the figure, that is, in the state in which it is rotated upward.

Further, when the third driven lever 59 is rotated counterclockwise, the lifting lever 96 is rotated clockwise via the lifting link 100, and as shown in FIG. It abuts against the automatic drive lever 94 which is in a tilted state due to abutment locking (see FIG. 13).

Note that when the first driven lever 38 is automatically opened, it is rotated counterclockwise, but since the second link 34 and the third link 35 are bent forward as shown in FIG. The first operating lever 29 does not rotate clockwise. Therefore, even if the operating handle (not shown) is automatically opened with the operating handle (not shown) attached to the first operating lever 29, the first operating lever 29 does not rotate, so it is safe.

In addition, if this manual closing state is automatically released, the 8th
As shown in the figure, the first operating lever 29 is already in the manual closing position. If you want to perform a manual closing operation after this automatic release, move this first operating lever 29 to the operating handle (
(not shown) in the clockwise direction.

At this time, since the second operating lever 32 also rotates clockwise, the first link 33. The second link 34 is moved downward, and the third link 35 is rotated counterclockwise by the biasing force of the torsion spring 35b, so that the third link 35 is attached to both upper and lower ends of the stopper member 39 as in FIG. ．． Second link 34
is in a backward folded state where it is locked.

Further, as the first operation lever 29 is rotated clockwise, the second link lever 56 is rotated in the same direction via the engagement pin 55 that contacts the locking hole 31, and the second link lever 56 is rotated in the same direction. Since the first link 57 follows the second link lever 56 and rotates clockwise about the shaft 56a due to the twist spring 56b, the second link 58. The lock plate 62 is rotated clockwise via the fourth link 63 from the state shown in FIG. 17 to the position shown in FIG.

Then, the lock lever 82 is rotated counterclockwise by a biasing spring (not shown), and the rolling roller 84 is locked to the lower rear side of the lock plate 62, and the engagement roller 84 is locked to the lower rear side of the lock plate 62. 83 is engaged with the engagement recess 81 of the automatic lock release lever 80 which is biased and rotated counterclockwise by the biasing spring 79, so that the lock plate 62 returns to the original locked state as shown in FIG. Return.

Further, by the clockwise rotation of the first linkage lever 54, the input power storage lever 67 is rotated counterclockwise via the second link 105 linked to the third linkage lever 64. , the closing spring 72 is compressed and energized by the shaft 67a. Furthermore, the third linking lever 64 can be manually operated.
When the shaft 65a is rotated clockwise, the locking protrusion 73 of the third linking lever 64 moves downwardly over the dead point C connecting the first fixed shaft 28 and the shaft 67a.
a, and in this state, the closing spring 72 for closing is held in a compressed force storage state (see FIG. 14).

From this state, a manual input operation can be performed using an operation handle (not shown).

Next, the case of automatic release from the automatic closing state will be explained. In this state, as shown in FIGS. 7, 12, 14, and 16, the first operating lever 29 is in the manual release position, and the release spring 41 and the closing spring 72 are both in a stored state. be.

In this state, when the trip coil 77 is energized, the plunger tI77a is moved downward by suction in the same manner as described above, thereby unlocking the lock plate 62. By releasing the locked state of the lock plate 62, the opening power storage lever 40, the first driven lever 38. Locking pin 43. Since the second driven lever 42 is rapidly rotated counterclockwise about the second fixed shaft 36 by the accumulated force of the release spring 41, the drive lever 47. Connection link 49° swing lever 48. The movable frame body 51 is pulled up via the link 50, and the switch 14 is opened.

When the lock plate 62 is unlocked, the second link 58 and the fourth link 63 open from the state shown in FIG. 12, but the second link lever 56 does not move. After the lock plate 62 is unlocked, the first link 57 is activated by the twist spring 56b provided on the shaft 56a.
rotates clockwise about the shaft 56a, so that the second link 58. The lock plate 62 is rotated clockwise via the fourth link 63 from the state shown in FIG. 17 to the position shown in FIG.

Thereafter, the lock plate 62 is stopped by the locking lever 82 in the same way as when manually opening, and returns to the original locked state shown in FIG. 16.

Furthermore, when the third driven lever 59 is rotated counterclockwise and the pull-up lever 96 is rotated clockwise via the pull-up link 100, the closing solenoid 91 is activated after the automatic closing is completed. is demagnetized, so its plunge t9
2 is an automatic drive lever 94 without bearings. It moves backward and returns via the pressure link 95 (see FIG. 13).

As a result, the state in which the self-1F11 is released from the automatic closing state becomes the state shown in FIGS. 5 and 10.

As described above, in this embodiment, the first operating lever 29 does not move during automatic closing and automatic opening, so even when the operating handle (not shown) is attached to the first operating lever 29, automatic opening and automatic opening can be performed safely. Inputs can be made.

Further, in this embodiment, the force of the release spring 41 can be stored during manual closing, and the force of the closing spring 72 can be stored during manual opening, and as a result, quick closing is possible and the operating load can be reduced.

Note that the present invention is not limited to the above-mentioned embodiments, and can be arbitrarily modified without departing from the spirit of the present invention.

Effects of the Invention As detailed above, the present invention provides a switch with an automatic closing trip release mechanism that is equipped with a force storage structure for manual opening and closing, and the closing spring and release spring that constitute the force storage structure are solenoid. Because the mechanism is placed on both sides of the lower part of the machine, the spacing between them is narrow even though there are many links, levers, and other parts required for automatic closing, manual closing, and manual opening operations. It is an excellent invention for industrial use because it has the effect of reducing storage space.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of a multi-circuit switch embodying the present invention, FIG. 2 is a side view, FIG. 3 is a front view of the opening/closing mechanism, and FIG. 4 is a partially cutaway plan view. Figure 5 is a side sectional view showing the opening/closing mechanism in the manual open state, Figure 6 is a side sectional view in the manual closing state, Figure 7 is a side sectional view in the automatic closing state, and Figure 8 is the same automatic opening. side sectional view of the condition;
Fig. 9 is a side sectional view showing the installation state of the release spring, Fig. 10 is a side sectional view showing the manual opening state of other important parts of the opening/closing mechanism, and Fig. 11 is a side sectional view showing the manual closing state. Figure, 1st
Figure 2 is a side sectional view showing the automatic closing state, Figure 13 is a side sectional view showing the automatic opening state, Figure 14 is a side sectional view showing the closing spring state, and Figure 15 is a side sectional view showing the closing spring state. FIG. 16 is a side sectional view showing the state in which the stored force is released, FIG. 16 is a side sectional view showing the lock plate in the locked state, and FIG. 17 is a side sectional view showing the lock plate in the unlocked state. 1...Automatic air release filter, 2...Body case, 3
...Opening, 4...Switching area, 6...Machine room, 14
... Opening/closing lid, 15... Opening/closing part, 16.17... Opening/closing mechanism, 20... Front frame, 21... Rear frame, 22... Side plate, 23... Side plate, 24 ... Connecting plate, 25... Side plate, 26... Side plate, 27... Connecting plate, 28... First fixed shaft, 29... First operating lever, 30... Operating handle installation Part, 32... Second operation lever, 36... Second fixed shaft, 37... Third fixed shaft, 38... Third driven lever, 40... Power storage lever for opening, '41 ...Release spring, 42...Second driven lever, 45...Lock release plate, 47...Drive lever, 48...Swing lever, 49...Connection link, 50
... articulating link, 51 ... movable frame, 52 ... r
M opening/closing lid holder, 54...first series engagement lever, 56...
Second link lever, 59...Third driven lever, 64...
・Third linkage lever, 66... Manual lock release drive lever, 67... Force storage lever for closing, 72... Closing spring, 77... Solenoid for lock release, 80... Automatic lock release lever , 82... Latching lever, 87...
Lock release actuation lever, 89...Press lever, 91.
... Closing solenoid, 93 ... Fourth fixed shaft, 94.
...Automatic drive lever, 96...Pull-up lever, LS...
・Limit switch, Δ, B. C...Dead point. Patent applicant Takamatsu Electric Manufacturing Co., Ltd. Representative
Person Patent Attorney On 1) Hironobu Figure 1 Drawing Part 1 Figure 2

Claims (1)

[Claims] 1. In a multi-circuit switch equipped with an opening/closing mechanism that drives the opening/closing lid to close and open, the opening/closing mechanism is provided with a solenoid for automatic closing at the top of the mechanism frame, and one side below the solenoid is equipped with a solenoid for automatic closing. A closing spring is arranged to perform the closing drive, and a release spring is arranged on the other side to perform the opening drive when opening.The driving force of the springs and the solenoid is transmitted between the two springs, and A multi-circuit switch characterized by being equipped with a manually operable opening/closing operation mechanism.