JPS6333447Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the operating mechanism of a rotary switch.

Conventionally, in a switch that uses a solenoid to close the switch, the solenoid was installed near the circumference of the switch. etc., resulting in a problem of increased loss due to transmission. Also, since the solenoid was installed near the circumferential side in this way,
The switch itself was large in the circumferential direction and required a large space.

Furthermore, as a switch for high voltage and large current, extinguishing the switching arc is an important issue, and therefore it is necessary to open the switch quickly.

The purpose of the present invention is to eliminate these drawbacks and provide an operating mechanism for a rotary switch that is compact, free from transmission loss, capable of quick opening, and suitable for use with high voltages and large currents.

An embodiment embodying the present invention will be described below with reference to the drawings. Reference numeral 1 indicates the entire rotary type switch, and 2 corresponds to the fixed electrode 3 so as to be able to come into contact with and separate from it.
This is an opening/closing part in which movable electrodes 4 are fixed to a rotating shaft 5. Reference numeral 6 denotes an actuating part provided adjacent to the opening/closing part 2 in the axial direction. ,
The movable electrode 4 is connected to a driven shaft 9 which is rotatably provided at the end of the rotation shaft 5 of the movable electrode 4 so that the movable electrode 4 can rotate integrally with the rotation shaft 5, thereby being connected in a common axis direction with the rotation shaft 5. Reference numeral 10 denotes a manual operation section provided adjacent to the opposite side of the opening/closing section 2 in the axial direction of the rotary solenoid 7. Reference numeral 11 denotes a cylindrical case that houses the opening/closing section 2, the operating section 6, and the manual operation section 9.

Next, the configuration of the operating section 6 will be explained in detail.
12 in Figure 2 is the opening/closing part 2 and the rotary solenoid 7
A fixed plate is fixedly fixed to the opening/closing part 2 via a mounting nut 13, and the driven shaft 9 is inserted into the fixed plate approximately at the center thereof. Reference numeral 14 denotes two rotating members fixed in parallel to the driven shaft 9 at their base ends, and a press pin 15 is provided between their distal ends. Reference numeral 16 denotes a substantially square rotating plate fixed to the driven shaft 9, which engages with stoppers 17 and 18 fixed to the fixed plate 12 to restrict the range of rotation of the driven shaft 9. ing.

19 is fixed plate 1 by support pin 20 at the base end.
The spring support fitting is rotatably supported by the spring support member 2, and a sliding groove portion 21 for loosely fitting the press pin 15 is formed at the tip thereof. 22 is an open spring inserted into the spring support fitting 19,
One end is a hook 23 at the base end of the spring support fitting 19
The other end is respectively hooked to the pressing pin 15, and a rotational force is applied to the driven shaft 9 via the pressing pin 15 and the rotating member 14 in the counterclockwise direction in FIG. 2 and in the opening direction. It's becoming like that.

Reference numeral 24 denotes a movable contact protruding from the driven shaft 9 on the side closer to the rotary solenoid 7 than the rotary plate 16, and as shown in FIGS. It is designed so that it can slide between two fan-shaped fixed contacts 26 and 27 provided on the fixed plate 12 and escape from the fixed contacts 26 and 27. 28 is a resistor fixed on the fixed plate 12 via fixtures 29 at both ends for suppressing the current flowing through the coil 36 of the rotary solenoid 7 when the rotary solenoid 7 is turned on;
0 and 31 are connected to each fixed contact 2 by conducting wires 32 and 33.
6 and 27, respectively. 34
is the other end of the fixed contact 26 and the rotary solenoid 7
It is a conducting wire for connecting the coil 36 of 3
5 is a conducting wire for connecting the other end of the fixed contactor 27 and the power source.

Next, the structure of the ball spline 37 for connecting the drive shaft 8 and the driven shaft 9 will be explained according to FIG.
It is a spline shaft that is fitted through a key 40 to the spline shaft, and three ball grooves 41a are provided on the outer peripheral surface of the spline shaft. Reference numeral 42 denotes a sleeve inserted into the spline shaft 38, and three ball grooves 41b corresponding to the ball grooves 41a of the spline shaft 38 are formed on the inner peripheral surface of the sleeve. A plurality of balls 43 are rotatably housed between the hole grooves 41a and 41b in a cylindrical retainer 44, and connect the spline shaft 38 and the sleeve 42 in the rotational direction. Both 38 and 42 are allowed to move relative to each other in the axial direction. 45 is a stopper ring attached to the inner surface of both ends of the sleeve 42, and the retainer 44
The range of movement of people is now being regulated. Reference numeral 46 denotes a projection fixed to the outer surface of the sleeve 42 in the axial direction, and when the sleeve 42 is fitted onto the driven shaft 9, a locking groove 47 provided on the inner surface of the driven shaft 9 parallel to the axial direction is inserted. It is now being inserted into the

Next, the structure of the rotary solenoid 7 will be explained. 48 is a mounting bolt 4 as shown in FIG.
9 is fixed to the inner surface of the case 11, and the rotary solenoid 7 is fixed to the substrate 48 at the rear end face with a mounting bolt 50, and fixed to the fixing plate 12 at the front end face via a spacer bolt 51. There is. Reference numeral 52 denotes a rotating ring portion fitted to the drive shaft 8 as shown in FIG.
Three driving wheels 53 are pivotally mounted on the outer circumferential surface at equal intervals.

Reference numeral 54 denotes each driving wheel 53 on the circumferential side of the rotating ring portion 52.
This is a guide metal fitting having a spiral guide surface 54a protruding from the rear end surface of the rotary solenoid 7 so as to correspond to the rotary solenoid 7. As the co-driving wheels 53 roll while contacting the guide surface 54a, the movement of the drive shaft 8 in the axial direction is converted into rotational force in the circumferential direction, and conversely, the rotational force of the drive shaft 8 is converted into rotational force in the axial direction. The trend is to change the movement towards

Next, the configuration of the manual operation section 10 will be explained according to FIGS. 6 and 7. 55 is a mounting bolt 5.
A support plate fixed to the substrate 48 by 6,
An operating shaft 57 is rotatably attached. 5
Reference numeral 8 indicates a manual lever fixed to the operating shaft 57 at the intermediate portion, and reference numeral 59 indicates the operating shaft 57 at the intermediate portion.
It is a rotary lever fixed to the manual lever 58, and is rotated integrally via an operating shaft 57 as the manual lever 58 is rotated.

Reference numeral 60 denotes a reversing lever whose base end is supported by a support pin 61 at one end of the rotary lever 59, and has a long hole 62 formed at its tip. A support plate 63 is fixed to the rear end surface of the rotary solenoid 7 by a mounting bolt 64, and a pin 65 is loosely fitted into the long hole 62 of the reversing lever 60.
is installed protrudingly. 66 is the pin 6 on the support plate 63
5 and a hook 67 at the tip of the reversing lever 60, the coil spring is configured to hold the manual lever 58 and the rotating lever 59 in the state shown in FIG. 6 or 7. ing.

Reference numeral 68 denotes a support plate fixed to the rotary solenoid 7 and the base plate 48 with mounting bolts 69; 70 is a lock lever rotatably supported on the support plate 68 by a support shaft 71 at its base end;
A stopper 72 fixed on the top restricts the range of downward rotation. Reference numeral 73 denotes a connecting plate whose one end is pivoted to approximately the middle portion of the lock lever 70 by a connecting pin 74, and the other end is connected to the other end of the rotary lever 59 by a connecting pin 75 through an elongated hole 76. ing.

Reference numeral 77 is an interlocking link whose one end is connected to the tip of the lock lever 70 by a connecting pin 78, and an elongated hole 79 is formed at the other end. 8
0 is an L-shaped rotating lever whose base end is fixed to the end face of the drive shaft 8 of the rotary solenoid 7 by a mounting bolt 81, and the tip thereof has a connection that loosely fits into the elongated hole 79 of the interlocking link 77. A pin 82 is provided protrudingly.

The operation of the rotary switch constructed as described above will now be described.

FIGS. 2 and 3 are diagrams showing the state of the operating section 6 when the coil 36 of the rotary solenoid 7 is energized and the switch 1 is in the closed state. In this state, the drive shaft 8 and the driven shaft 9 are urged clockwise in FIG. 2 by the energy of the coil 36.
The rotating plate 16 is in contact with one stopper 17, and the pressing pin 1 is attached between the distal ends of the rotating member 14.
5 presses the release spring 22 upward to store spring pressure. Further, current flows through the coil 36 via the resistor 28. This switch 1 is of a constantly excited type that suppresses and maintains the current through a resistor 28 after the circuit is closed.

When an accident occurs, the substation's relays operate and the circuit breakers trip. When the power supply is removed, the rotary solenoid 7 becomes de-energized, and the switch performs a quick cutting operation due to the stored force of the opening spring 22. In other words, the pressing pin 15 is pushed downward by the stored force of the opening spring 22. The rotating member 14 and the rotating plate 16 are rotated to a position where the rotating plate 16 abuts the stopper 18 as shown by the chain line in FIG.
Accordingly, the driven shaft 9 and the rotating shaft 5 are rotated in the opening direction, and further, the drive shaft 8 is returned to the state before closing, and the switch 1 is placed in the open state. At this time, the movable contact 24 also rotates to the position shown by the chain line in FIG. 3, and comes into contact with the two fixed contacts 26 and 27.

Further, the drive shaft 8 is connected to the release spring 22 via the driven shaft 9.
Since only rotational force is applied to the driving wheel 53, the driving wheel 53 rolls while contacting the guide surface 54a of the guide fitting 54, and the rotating ring portion 52 on which the driving wheel 53 is provided rotates.
is applied with an axial force and moves in the axial direction as well and is pulled back. The sleeve 42 of the ball spline 37 rotates together with the driven shaft 9, but the ball 43
does not roll in the circumferential direction, and the rotational force of the driven shaft 9 is directly transmitted to the drive shaft 8 via the ball spline 37. When the drive shaft 8 is rotated in this way, it is also pulled back in the axial direction as described above, but the spline shaft 38 is connected to the sleeve 4 via the ball 43.
2, the driven shaft 9 is not pulled back.

Next, when the substation circuit breaker is reclosed, the coil 36 of the rotary solenoid 7 is energized. At this time, the current flowing through the conductors 34 and 35 is
6, 27 and the movable contact 24 in contact with these, but does not flow to the resistor 28, so the coil 36
becomes larger in energy than the energy when maintained in the closed state, and pushes out the drive shaft 8 in the axial direction. As a result, the driving wheel 53 is moved to the guide metal fitting 54.
Since it rolls while contacting the guide surface 54a of the rotating ring 52, rotational force is applied to the rotating ring portion 52 on which the cooperating wheel 53 is provided, and the drive shaft 8 is rotated clockwise in FIG. At the same time, the driven shaft 9 and the rotating shaft 5 rotate, and the switch 1 is brought into the closed state. At this time, the drive shaft 8 charges the release spring 22 via the driven shaft 9.

In this way, the movable contact 24 is connected to the fixed contact 26,
27, the current begins to flow through the resistor 28, and the energy of the coil 36 is transferred to the drive shaft 8 and the driven shaft 9.
And the pressure pin 15 becomes sufficient to maintain pressure on the release spring 22 via the rotating member 14.

At this time, the spline shaft 38 of the ball spline 37 is pushed out while rotating together with the drive shaft 8, but although the spline shaft 38 and the sleeve 42 cannot rotate relative to each other in the circumferential direction, they can move relative to each other in the axial direction. Therefore, the rotational force of the drive shaft 8 is directly transmitted to the driven shaft 9 via the ball spline 37, and the pushing force is also transmitted directly to the driven shaft 9 via the ball spline 37.
It is absorbed by.

When the switch 1 is opened and closed by the rotary solenoid 7 in this way, the drive shaft 8 of the rotary solenoid 7 is rotated together with the rotation ring portion 52, but in this embodiment, the drive shaft 8 is rotated manually as shown in FIG. The connecting pin 82 on the rotating lever 80 fixed to the drive shaft 8 in the operating section 10 is connected to the elongated hole 7 of the interlocking link 77.
9, the rotational force of the drive shaft 8 is not transmitted to the lock lever 70, and therefore the manual lever 58 does not move.

Further, when closing the switch 1 which is in an open state at the site, the manual lever 58 is rotated in the direction shown by the arrow in FIG. Then, the rotating lever 59 rotates in the clockwise direction in FIG. 6, and at the same time, the reversing lever 60 also rotates while pressing the coil spring 66 with the hook 67 and sliding the elongated hole 62 onto the pin 65. . Here, when the support pin 61 crosses the line connecting the operating shaft 57 and the pin 65, the latching portion 67 is pushed out by the biasing force of the coil spring 66 and the reversing lever 60 is moved upward without strongly rotating the manual lever 58. Rotate.

Further, the lock lever 70 is rotated downward by the rotary lever 59 via the connecting plate 73 and is engaged with the stopper 72, so that the rotary lever 59 and the reversing lever 60 become stationary. On the other hand, the rotating lever 80 is rotated via the interlocking link 77 from the position shown by the chain line in FIG. 6 to the position shown in FIG. 7, and the switch 1 is placed in the closing state.

After that, when the manual lever 58 is returned to its original position, the rotating lever 59 and the reversing lever 60 are rotated, the locking lever 70 is also rotated upward via the connecting plate 73, and the interlocking link 77 is also rotated by the force of the release spring 22. Return to position. In this way, the manual operation section 10 is in the state shown by the two-dot chain line in FIG.

As detailed above, the present invention rotatably supports a rotating shaft common to each phase within the case, and the rotating shaft is provided for each phase and corresponds to a fixed electrode that can be moved toward and away from the fixed electrode. In a rotary type switch with a fixed movable electrode, a rotary solenoid is arranged at one end of the rotating shaft, and the rotary solenoid is arranged in a wound coil, and is rotated in the axial direction by excitation of the coil. A drive shaft that performs a suction operation, a rotating ring fixed to the drive shaft, a driving wheel that is attached to the outer peripheral surface of the rotating ring, and when the coil is excited, it comes into contact with the driving wheel and rotates. a guide fitting having a spiral guide surface that applies rotational force to the moving ring portion; Since the drive shaft and the rotating shaft are connected in the common axis direction via a spline, there is no loss in power transmission, and the rotary switch itself can be made compact. Furthermore, a pressing pin is provided on the driven shaft, and the pressing pin stores energy when the rotary solenoid is energized, and a release spring that presses the pressing pin and rotates the driven shaft in the opening direction when the rotary solenoid is demagnetized. Since the switch is provided, the switch can be quickly opened, and a rotary switch suitable for use with high voltage and large current can be obtained, which is an excellent effect.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing an embodiment of a rotary switch embodying the present invention, Figs. 2 and 3 are cross-sectional views showing the operating part, and Fig. 4 is an exploded view of the main parts. FIG. 5 is a perspective view of the rotary solenoid, and FIGS. 6 and 7 are sectional views of the manual operation section. Rotary type switch 1, opening/closing part 2, actuating part 6, rotary solenoid 7, drive shaft 8, driven shaft 9, manual operation part 10, rotating member 14, pressing pin 15, rotating plate 16, spring support fitting 19, Opening spring 22, movable contact 24, fixed contacts 26, 27, resistor 2
8, coil 36, ball spline 37, spline shaft 38, sleeve 42, driving wheel 53, guide fitting 54, guide surface 54a, manual lever 58, rotating lever 59, reversing lever 60, lock lever 7
0, connecting plate 73, interlocking link 77, long hole 79, rotation lever 80.

Claims (1)

[Claims for Utility Model Registration] 1. A rotating shaft common to each phase is rotatably supported within the case, and the rotating shaft is provided for each phase and corresponds to a fixed electrode that can be moved toward and away from the fixed electrode. In a rotary type switch with a fixed movable electrode, a rotary solenoid is arranged at one end of the rotating shaft, and the rotary solenoid is arranged in a wound coil, and is rotated in the axial direction by excitation of the coil. A drive shaft that performs a suction operation, a rotating ring fixed to the drive shaft, a driving wheel that is attached to the outer peripheral surface of the rotating ring, and when the coil is excited, it comes into contact with the driving wheel and rotates. a guide fitting having a spiral guide surface that applies rotational force to the moving ring portion; is connected in the direction of the common axis of the drive shaft and the rotating shaft via a spline, and a press pin is provided on the driven shaft, and the press pin stores energy when the rotary solenoid is energized, and the rotary An operating mechanism for a rotary switch, characterized in that a release spring is provided that presses the pressing pin to rotate the driven shaft in the opening direction when the solenoid is demagnetized. 2. The operating mechanism of a rotary type switch according to claim 1, wherein the spline allows relative movement in the axial direction of the drive shaft of the rotary solenoid and transmits only rotation. . 3. The operating mechanism for a rotary switch according to claim 2, wherein the spline is a ball spline.