JPH035069Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention particularly relates to an opening/closing operation mechanism for a switch that allows easy manual closing operation.

(Prior Art) Conventionally, manual and automatic switches have been provided with an opening spring on a drive shaft, and the opening spring is charged when the drive shaft is turned on. When opening the opening operation mechanism, quick cutting can be performed by releasing the stored force of the opening spring.

(Problem that the invention aims to solve) However, in the conventional opening/closing operation mechanism, the handle was operated against the stored force of the opening spring, which required a great deal of manual force for the closing operation. It required

Structure of the invention (Means for solving the problem) This invention was made in order to solve the above-mentioned problem, and is to selectively rotate the drive shaft in either the closing direction or the opening direction. A manual operating shaft is used in a switch that stores force in a closing spring when closing and opening is performed via a toggle mechanism attached to the switch, and quickly cuts the opening/closing part by the biasing force of the opening spring when opening. A first lever and a second lever, which are integrally connected to each other, are rotatably supported, the second lever is provided with a sliding hole, and the sliding hole is used to open and close the toggle mechanism. An operating pin that selectively drives both ends of the sliding hole in conjunction with the operation to rotate the second lever in the closing or opening direction is slidably linked, and the rotation of both levers when they are opened is slidably linked. The stored force is released by the rotation of both levers at the time of closing, and a closing assist spring having approximately the same torque as the opening spring is linked to both levers, and the first lever is is characterized by providing a connecting portion for transmitting rotational torque to the drive shaft.

(Function) With the above configuration, when the manual operating shaft is rotated in the closing direction, the operating pin of the toggle mechanism moves through the sliding hole of the second lever and presses one end of the sliding hole,
When the toggle mechanism exceeds its dead point, the biasing forces of the loaded assist spring and the opening spring are approximately the same torque, so these two torques cancel each other out, and the biasing force of the toggle mechanism causes the opening spring to release. The drive shaft is engaged regardless of the biasing force. The opening spring is held in a energized state by a toggle mechanism.

When the manual operating shaft is rotated in the opening direction, the operating pin of the toggle mechanism moves through the sliding hole of the second lever and presses the other end of the sliding hole, and when the toggle mechanism passes its dead point, The drive shaft is opened by the urging force of the opening spring.

(Example) Hereinafter, an example in which this invention is embodied in a manually operable automatic switch will be described with reference to FIGS. 1 to 7.

A drive shaft 3 is rotatably installed between the center lower part of both sides in the main body case 1 formed in a sealed shape of the switch via a bearing 2 (only one bearing is shown) (see Figs. 1 and 4). (see figure), by rotating the drive shaft 3 to close and open, opening and closing sections (not shown) provided for each phase can be opened and closed. A dogleg-shaped opening/closing lever 10 and an auxiliary lever 11 are provided at one end of the drive shaft 3 on the mechanism part case 14 side.
A pin 12 is bridged at the tip of both levers 10 and 11.

A channel-shaped support member 4 is fixed to one lower slanted surface on one side of the main body case 1, and mounting recesses 6 are provided in both side pieces 5 of the support member 4.
is formed. Further, a spring support rod 7 is rotatably supported in the mounting recesses 6 of the both side pieces 5 by a rotation pin 8 inserted through its base end. A guide groove 9 is formed in the longitudinal direction from the end face of the tip end of the spring support rod 8, and the pin 12 of the opening/closing lever 10 and the auxiliary lever 11 are slidably engaged in the guide groove 9.

The spring support rod 7 includes the rotation pin 8,
By interposing a quick release spring 13 whose both ends are locked to the pin 12, both levers 1 are always
0, 11 to open the drive shaft 3 in the rotational direction (fourth
It is designed to be biased in the direction of arrow P shown in the figure).

Next, the opening/closing mechanism that can be operated automatically and manually will be explained.

A mechanism case 14 is attached to the outer surface of one side of the main body case 1 in a sealed manner. A support plate 15 is fixed to one side of the main body case 1 in the mechanism case 14, and a spacer 1 is attached to the support plate 15.
A plurality of support rods 17 are installed through which the rods 6 are inserted. The spacer 16 is provided at the tip of the support rod 17.
A support plate 18 spaced parallel to the support plate 15 is fixed to the tip of the support rod 17. Further, a connecting plate 19 is installed between the corresponding left and upper side surfaces of the supporting plate 15 and the supporting plate 18 (in FIG. 2).

The upper center of the support plate 15 and the mechanism case 14
The support plate 1 is provided between the bearings 20 provided on the upper side wall of the
A manual operation shaft 21 passing through the shaft 8 is rotatably bridged. Furthermore, a manual operating handle 22 is fixed to the outer end of the operating shaft 21 that projects outward from the mechanism case 14 via the bearing 20.

A rotary lever 23 serving as a first lever is rotatably inserted and supported on the operating shaft 21 closer to the support plate 15 via a spacer 24 . The rotary lever 23 is formed into a substantially V-shape by a pair of locking pieces 23a and 23b, and has a linking protrusion 2 on the side of a support shaft 30 (to be described later) at its base end.
6 is formed.

A stopper 25 is fixed to the support plate 15 corresponding to the middle of the locking pieces 23a and 23b, and when the operating shaft 21 is turned to either the closing or opening position, the stopper 25 is fixed to the support plate 15 so that one of the turning levers 23 is turned. Locking piece 23
The levers 23a and 23b are selectively engaged with opposing sides of each other to restrict the amount of rotation of the rotating lever 23.

An arc-shaped operating lever 27 serving as a second lever is rotatably inserted into and supported by the operating shaft 21 at a predetermined distance from the rotating lever 23 via a spacer 24 common to the rotating lever 23. and has an engagement hole 28 in the circumferential direction at its tip.
is formed. In the operating lever 27, a sliding pin 29 is installed between the tip of the side portion of the connecting plate 19 and the corresponding locking piece 23a of the rotating lever 23.

A support shaft 30 is installed between the support plate 15 and the support plate 18 at a position diagonally below and to the left of the connection plate 19, and a spring support member 31 is rotatably supported on the support shaft 30. Note that spacers 32 are inserted and arranged on both sides of the attachment position of the spring support member 31 on the support shaft 30.

A long hole 33 extending in the longitudinal direction is provided at the tip of the spring support member 31, and the sliding pin 29 is slidably inserted therethrough. Both ends of the spring support member 31 are locked to the spacer 32 of the support shaft 30 and the sliding pin 29 in a force-storage state, and generate approximately the same torque as the opening spring 13 to the drive shaft 3. The closing assist spring 34 is set as follows.
is interposed. Therefore, the closing assisting spring 3
The actuating lever 27 is always urged in the closing rotation direction by the urging force 4. The spring support member 31 and the loading assisting spring 34 constitute a biasing mechanism. In addition, the above-mentioned loading assistance spring 3
The elastic force of No. 4 is set smaller than the elastic force of a coil spring 42 of a toggle mechanism to be described later.

1 and 3, a pair of toggle levers 35 of the same shape and spaced apart from each other are fixed to the operating shaft 21 at the center thereof. Elongated holes 26 extending in the rotation direction are transparently provided at both ends of each toggle lever 35 located at positions 180 degrees opposite to each other around the operating shaft 21, and between the elongated holes 36 of each toggle lever 35 facing each other. A pair of connecting pins 37 are slidably bridged with each other via a spacer 38. Note that the spacer 38 is prevented from coming off from the connecting pin 37 by retaining plates 38a fixed to both ends of the connecting pin 37.

The support shaft 30 is 180 degrees centering on the operation shaft 21.
A support rod 17 is arranged at the opposite position, and the support rod 1
7 and the support shaft 30, a pair of spring support plates 39 are rotatably supported. Note that spacers 40 are inserted and arranged on both sides of the attachment position of the spring support plate 39 on the support shaft 30 .

A long hole 41 extending in the longitudinal direction is provided at the tip end of each spring support plate 39, and the corresponding connecting pin 37
are slidably inserted through each. and,
Each of the spring support plates 39 is equipped with a pair of coil springs 42 whose ends are respectively locked to the spacer 40 and connection pin 37 of the support shaft 30 and to the spacer 16 and connection pin 37 of the support rod 17. . The elastic force of the coil spring 42 is set to be stronger than the elastic force of the opening spring 13.

An actuation pin 43 is installed between one side of the toggle lever 35, and one end on the support plate 15 side is slidably inserted into the engagement hole 28 of the actuation lever 27. The toggle lever 35 connects the support shaft 30, the operation shaft 21, and the support rod 17 when the operation shaft 21 is rotated in either the closing direction or the opening direction. When the connecting pin 37 crosses the dead point X, the urging force of the coil spring 42 causes it to rotate vigorously in the same direction.

When the toggle lever 35 rotates, the operating pin 43 engages and presses one end of the sliding hole 28 to selectively move the operating lever 27 and the rotating lever 23 in the closing or rotating direction. It is becoming more and more driven.

Therefore, the engagement hole 28 is formed such that the connecting pin 37 passes the dead point X immediately after the toggle lever 35 is turned on or off and the operating pin 43 engages with either end thereof. The length is set.

The toggle lever 35, the spring support plate 39, and the coil spring 42 constitute a toggle mechanism.

A support plate 1 is disposed below the support shaft 30 between the support plate 18 and a bearing 44 provided on the end wall of the main body case 1.
5 is rotatably bridged. A first driven lever 46 is fixed to the rotation shaft 45 immediately adjacent to the bearing 44 . A pair of connecting links 4 are provided at the tip of the first driven lever 46.
The base end portion of 7 is rotatably attached to the shaft.

A sliding hole 48 extending in the longitudinal direction is transparently provided at the tip of the connecting link 47, and an engaging pin 26a fixed to the connecting projection 26 of the rotating lever 23 is inserted into the sliding hole 48. Slidably inserted. An adjusting bolt 49 and a nut 50 are interposed in the intermediate portion of the connecting link 47 so that the length can be adjusted. A sliding pin 29 fixed to the tip of the linking protrusion 26 of the rotating lever 23 is slidably and rotatably connected to the sliding hole 48 of the connecting link 47.

The sliding hole 48 is opened when the rotation shaft 45 is driven to close by a plunger 56 of a solenoid 55 (to be described later) in the state shown in FIG. 6, that is, when the operating lever 26 is held in the open state. A connecting link 47 that operates via the driven lever 46 is set to a length such that the end of the sliding hole 48 does not operate the rotary lever 23 via the engaging pin 26a serving as a connecting portion.

Further, when the rotary lever 23 is turned on via the operating shaft 21, the engagement pin 26 of the linking protrusion 26
When a is engaged with one end of the sliding hole 48 and pressed, the connecting link 47 is configured to rotate the rotation shaft 45 to open and close it via the first driven lever 46. .

In the first driven lever 46 and the support plate 18, a sleeve 51 is attached to the rotation shaft 45 with a fixing pin 52.
It is fixed by driving into both 45 and 51. A pair of second driven levers 53 are fixed to the sleeve 51, and an elongated hole 54 extending in the longitudinal direction is provided at the distal end thereof. A solenoid 55 is fixed to the support plate 15 below the manual operation shaft 21, and is adapted to attract the plunger 56 in an energized state.

A linking pin 57 is fixed to the tip of the plunger 56, and is slidably and rotatably connected to the long hole 54 of the second driven lever 53. The tip of the plunger 56 can be screwed into the plunger body,
By screwing in and untwisting this tip, the plunger 5
The stroke amount of 6 can be adjusted.

In FIGS. 1 and 4, a drive lever 58 is fixed to one end of the rotating shaft 45 that protrudes from the bearing 44 into the main body case 1, and a link 59 is pivotally attached to the tip of the drive lever 58. ing. The distal end of the link 59 is rotatably attached to a substantially central portion of the opening/closing lever 10 by a shaft 60.

The operation of the opening/closing operation mechanism configured as above will be explained.

Now, in FIG. 6, the solenoid 55 is in a de-energized state, the opening/closing part (not shown) is in an open state, and the locking piece 23b of the rotating lever 23 of the manual operation shaft 21 is locked with the stopper 25. It is held in the open state. At this time, the toggle lever 35 is in the state shown in FIG. That is, the connecting pin 37 on the support rod 17 side of the toggle lever 35
is located above dead point X.

In this state, the operating shaft 21 is moved to the coil spring 4 of the toggle mechanism via the manual operating handle 22.
It rotates in the input direction (in the direction of the arrow S in Fig. 6) against the biasing force No. 2. By this rotation of the operating shaft 21,
The toggle lever 35 is rotated in the same direction. This rotation of the toggle lever 35 causes the actuation pin 43 to slide through the engagement hole 28 of the actuation lever 27.
Immediately after the connecting pin 37 of the toggle lever 35 fixed to the operating shaft 21 engages and presses the corresponding other end 28a of the engaging hole 28, the connecting pin 37 of the toggle lever 35 is connected to the supporting shaft 30 and the operating shaft 21.
and beyond the dead point X connecting the support rod 17,
As a result, the operating lever 27 is rotated in the closing direction.

The rotation of the operating lever 27 causes the rotation lever 2
3 is also rotated in the same direction, whereby the linking protrusion 2
6 engagement pins 26a drive the connecting link 47. Then, the rotation shaft 45 rotates in the closing direction (in the direction of the arrow T in FIG. 6) via the first driven lever 46.

As a result, the drive lever 58 is rotated in the same direction against the biasing force of the opening spring 13, but at this time, the biasing force of the opening spring 13 and the closing assisting spring 34 of the biasing mechanism Since the biasing force and the biasing force of
Regardless of the urging force of the opening spring 13, the driving shaft 3 is moved to the rotating lever 23 via the connecting link 47, the first driven lever 46, the rotating shaft 45, etc.
The locking piece 23a is rotated until it is locked with the stopper 25, and as a result, the opening/closing part (not shown) is closed.

In this state, the elastic force of the coil spring 42 and the connecting pin 37 of the toggle lever 35 cause the reverse bending of the link beyond the dead point Rotation in the direction of arrow S (in FIG. 6) is prevented, and the closing state is maintained with the opening spring 13 loaded (as shown in FIGS. 2 and 3).
(see figure).

In order to manually release the state shown in FIG. 2, which has been closed by the manual operation, the manual operation handle 22 may be operated in the opposite direction. That is, the operating shaft 21 is rotated in the opposite direction of the arrow S against the biasing force of the coil spring 42 of the toggle mechanism.

Then, the toggle lever 35 is rotated in the same direction. This rotation of the toggle lever 35 causes the actuation pin 43 to slide in the engagement hole 28 of the actuation lever 27, and the actuation pin 43 slides into the corresponding other end 2 of the engagement hole 28.
Immediately after engaging and pressing the toggle lever 8b, the connecting pin 37 provided on the toggle lever 35 fixed to the operating shaft 21 crosses the dead point It is rotated in the opening direction.

This rotation of the operating lever 27 in the opening direction causes the rotation lever 23 to also rotate in the same direction, thereby causing the engagement pin 26a of the linking protrusion 26 to rotate in the opening direction via the sliding hole 48. , the connecting link 47 is released from the locked state. Then, the rotation shaft 45 becomes rotatable in the opening direction (in the direction of the arrow T in FIG. lever 10,
The drive shaft 3 is rotated in the opening direction (in the direction of the arrow P in FIG. 4) via the auxiliary lever 11, and the opening/closing portion (not shown) is opened.

In addition, when the operation shaft 21 is opened, the closing assisting spring 34 connects the connecting pin 37 of the toggle lever 35 to the support shaft 30, the operation shaft 21, and the support rod 17.
The biasing force of the coil spring 42 beyond the dead point

In addition, as shown in FIGS. 5 and 6, the manual operation shaft 21, spring support plate 39, and toggle lever 3 are
5. When the operating lever 27 and the like are in the open position, when the solenoid 55 is energized, the plunger 56 is attracted and held (the state shown in FIG. 7). Then, since the rotation shaft 45 is turned in the direction of the arrow T in FIG. 6 via the second driven lever 51, the drive lever 58 is also turned in the same direction against the urging force of the opening spring 13. Ru. As a result, the drive shaft 3 is rotated through the link 59 and the opening/closing lever 10, and the opening/closing portion is driven to close. At this time, the spring support rod 7
The opening spring 13 interposed therein is held in the charged state shown in FIG. 4.

When the solenoid 55 is demagnetized in the state shown in FIG.
2. The drive shaft 3 is rotated in the opening direction (in the direction of the arrow P in FIG. 4) via the opening/closing lever 10 and the auxiliary lever 11, and as a result, the opening/closing part (not shown) is driven to open. As a result, the rotation axis 45 is
9. It is rotated in the direction of the arrow in FIG. 4 via the drive lever 58, and the first driven lever 46 provided on the rotation shaft 45 is rotated in the direction of the arrow T in FIG.

At this time, since the connecting link 47 is provided with a sliding hole 48, even if the connecting link 47 is operated in the opening direction, the sliding hole 48 will not fit into the engaging pin 26a of the connecting protrusion 26.
The rotary lever 23 is not rotated only by sliding at the .

As mentioned above, during manual operation, the drive shaft 3 is driven to close and open via the toggle mechanism, and the closing assisting spring 34 is linked via the toggle mechanism.
The closing operation of the drive shaft 3 is simply performed by the toggle mechanism, and the accumulated force of the opening spring 13 is canceled by the closing assisting spring 34 in response to this operation, so that the closing operation can be performed smoothly by the toggle mechanism. can. Since the opening spring 13 is operated to store energy at the same time as the closing operation, unlike the conventional method, a large operating force is not required to store the opening spring 13 for the closing operation, and a small manual operation force is required to close the closing operation. The operation can be completed.

It should be noted that this invention is not limited to the above-mentioned embodiments, and may be modified as desired without departing from the spirit of this invention, such as embodying other switches.

Effects of the invention As detailed above, in this invention, the drive shaft is driven to close and open via a toggle mechanism, and the closing assist spring is linked via the toggle mechanism, so the closing operation of the drive shaft is simply This operation is performed by a toggle mechanism, and the accumulated force of the opening spring is canceled by the closing assisting spring, so that the closing operation can be smoothly performed by the toggle mechanism. Since the opening spring is stored at the same time as the closing operation, unlike conventional methods, a large operating force is not required to store the opening spring's force in response to the closing operation, and the closing operation can be performed with a small manual operation force. It has the effect of being easy to complete and easy to operate.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a mechanism case in a gas switch according to an embodiment of this invention, FIG. 2 is a front sectional view of the mechanism case, and FIG. 3 is a front sectional view of a toggle lever. FIG. 4 is a side sectional view of the opening/closing operation mechanism inside the main body case, FIG. 5 is a front sectional view showing the operation of the toggle lever, and FIG. 6 is a front sectional view showing the operation of the opening/closing operation mechanism inside the mechanism case. FIG. 7 is a front sectional view showing another operation of the opening/closing operation mechanism. DESCRIPTION OF SYMBOLS 1... Main body case, 3... Drive shaft, 7... Spring support rod, 10... Opening/closing lever, 11... Auxiliary lever, 13... Opening spring, 21... Operating shaft, 22
...Manual operation handle, 23 ... Rotating lever, 2
7... Actuation lever, 29... Spring support member, 32
... Coil spring, 34 ... Closing support spring, 45 ... Rotating shaft, 46 ... First driven lever,
53...Second driven lever, 55...Solenoid,
56... Plunger, 58... Drive lever, 55
...Links.

Claims (1)

[Claims for Utility Model Registration] 1. The opening spring 13 is activated at the time of closing by opening and closing the drive shaft 3 through a toggle mechanism that selectively rotates the drive shaft 3 in either the closing direction or the opening direction. In a switch that stores force and quickly cuts the opening/closing part by the biasing force of the opening spring 13 when opening, a first lever 23 and a second lever are integrally connected to a manual operation shaft 21. Lever 2
7 is rotatably supported, the second lever 27 is provided with a sliding hole 28, and the sliding hole 28 is connected to the closing/opening operation of the toggle mechanism.
selectively driving both ends of the second lever 27
The actuating pin 43 that rotates in the closing or opening direction is slidably linked, and the force is accumulated by the rotation of the levers 23 and 27 when they are opened, and the levers 23 and 27 are
The rotation of the lever 27 at the time of closing releases its stored force, and the closing assisting spring 34, which has approximately the same torque as the opening spring 13, is connected to both levers 2.
3 and 27, and the first lever 23 has a connecting portion 26a that transmits rotational torque to the drive shaft 3.
An opening/closing operation mechanism for a switch, characterized in that it is provided with. 2. The toggle mechanism has a toggle lever 35 fixed to an operating shaft, one end of which is rotatably attached to the shaft, and the other end of which slides against both ends of the toggle lever 35 that are located 180 degrees opposite each other. A pair of spring support plates 39 are attached to each spring support plate 39, and the attachment point of the spring support plate 39 to the toggle lever 35 is attached to the spring support plate 39.
The toggle lever 35 is configured with a coil spring 34 that selectively rotates the toggle lever 35 in either the closing direction or the opening direction by crossing a dead point connecting the rotation axis landing point of the toggle lever 35 and the operating shaft 21. An opening/closing operation mechanism for a switch according to claim 1 of a certain utility model registration.