JP2866288B2 - Switchgear operating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch operating device for opening and closing an electric circuit.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a perspective view showing a configuration of a conventional switch operating device shown in Japanese Unexamined Patent Publication (Kokai) Publication. In the figure, a first lever 17 for opening and closing a contact of a switch (not shown) is provided on a main body 1 of the operating device, and a first lever 17 for driving the first lever 17 in a direction in which the switch is closed. Are provided, and an opening mechanism for driving the first lever 17 in a direction in which the switch is opened is provided. An energy storage mechanism is housed in a cylindrical housing 18 protruding from the main body 1. The energy storage mechanism is provided with two sets of torsion bars 50 and 60, and one of the torsion bars 50 urges the first lever 17 in a direction in which the switch is opened (direction of arrow A). And the other torsion bar 60 is a large gear 31 of the closing mechanism.
And the second lever 33 interlocked via the link 32 is urged in the direction of arrow B.

Next, the operation will be described. When the rotational driving force stored in the torsion bar 60 interlocked with the second lever 33 is released, the second lever 33 rotates in the direction of arrow B, so that the second lever 33 and the large gear The large gear 31 is rotated about 180 ° in the direction of arrow C by the link rod 32 that links the 31. As a result, the connecting portion 32a between the link rod and the large gear 31 is at the lowermost position in the figure. When the large gear 31 rotates in the direction of arrow C, the first lever 17 is rotated in the direction of arrow D to close the switch. Also, the first lever 1
When 7 rotates in the direction of arrow D, a rotational driving force is accumulated in the torsion bar 50 for driving the switch in the opening direction. When the first lever 17 is driven in the direction of arrow D and the second lever 33 is at the lowermost position in the figure, the small gear 30 is rotated from the outside of the apparatus and the large gear 31 is rotated.
Is further rotated in the direction of arrow C, whereby the second lever 33 rotates in the direction of arrow E, whereby the rotational driving force is stored in the torsion bar 60 for driving the second lever 33 in the direction of arrow B. Be inspired.

[0004]

In a conventional switch operating device, when assembling and adjusting, it is necessary to adjust the operating mechanism and the link system while the two sets of torsion bars 50 and 60 are in an accumulating state. Torsion bar 50, 6 at the time of energy storage
When the driving force of 0 was large, it was very dangerous. In order to avoid the dangerous work, the operation mechanism is mechanically locked to prevent the torsion bars 50, 60 from being released. However, since the lock can be removed by anyone, there is a problem that danger cannot be avoided particularly when working with a large number of people.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a simple operation to lock the functions of a tripping unit and a closing unit, and to operate a switch capable of ensuring work safety. The aim is to obtain a device.

[0006]

A switch operating device according to the present invention comprises a switch driving means for driving a switch for opening and closing an electric circuit, wherein the switch driving means comprises a tripping means, a closing means, and an urging force storage. A first elastic body and a second elastic body which are provided in parallel with each other and have a biasing means and project from the switch driving means to bias the switch driving means in a direction in which the switch is opened; An opening biasing means having end portions of first and second elastic bodies fixed by a first joint portion; and an opening biasing means protruding from the switch driving means. Opening means having a third elastic body and a fourth elastic body which are arranged in parallel with each other and urge the switch driving means with a rotational force in the opening direction of the switch, Third
And a switch operating device provided with an opening urging means to which an end of the fourth elastic body is fixed by a second joint, wherein the operating means is screwed into the main body frame in the vicinity of the tripping means and the closing means. A trip / insertion prevention lock pin for moving or retreating by a rotation operation with a key from below to lock or disengage the functions of the tripping means and the closing means.

[0007]

According to the present invention, the switch operating device of the present invention is tripped.
The insertion prevention lock pin moves forward and backward by an external key operation, and locks or releases the mechanism of the tripping means and the insertion means.

[0008]

【Example】

Embodiment 1 FIG. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the configuration of a switch operating device according to Embodiment 1 of the present invention, and FIG. 2 is a configuration diagram showing the inside of the operating device main body. In the figure, reference numeral 1 denotes a main body, and 2 denotes an energy storage portion projecting from the main body 1. FIG. 2 shows an operation state inside the main body 1 when the switch 15 driven and operated by the operating device is in a closed state. A movable contact of the switch 15 for opening and closing an electric circuit is connected via a link mechanism 16. It is mechanically connected to a first lever 17 disposed inside the main body 1. The first lever 17 is configured to rotate by a predetermined angle about the rotation shaft 26, and is turned by a first torsion bar 50 as a first elastic body provided in the energy storage unit 2. It is urged in the A direction. However, as shown in FIG. 2, the tripping latch 10, which is prevented from rotating by the tripping trigger 12 interlocking with the tripping electromagnet 13, has the first pin 1 provided on the first lever 17.
The first lever 17 is locked at the position shown in FIG. Reference numeral 71 denotes a trip prevention lock pin which is engaged with the trip trigger 12, and this relation can be released by using a key 72 described later.
Further, a shock absorber 36 is connected to the first lever 17, so that the shock at the time of opening and closing the movable contact of the switch 15 is reduced.

When the switch 15 is closed, the tripping latch 10 is in contact with the closing trigger 7 interlocking with the plunger 9 of the closing electromagnet 8, and the turning operation of the closing trigger 7 is prevented. 70 is a closing prevention lock pin,
It is engaged with the closing trigger 7, and this relationship can be released using a key 72 described later. Further, the closing trigger 7 is connected to the second pin 4 provided on the large gear 31.
, The rotation of the large gear 31 is prevented. This large gear 31
Is the energy storage unit 2 via the link rod 32 and the second lever 33.
Is connected to a second torsion bar portion 60 which is a second elastic body provided at the second position. The second lever 33 is configured to rotate in the arrow B direction shown in FIG. 2 around the rotation shaft 27 by the second torsion bar portion 60.
Accordingly, in the closed state of the switch 15 shown in FIG. 2, the large gear 31 is urged to rotate in the direction of arrow C. The large gear 31 is provided with a cam 3 coaxially.
Further, a toothless portion 31a is formed in a part of the gear, and FIG.
In the closed state of the switch 15 shown in FIG.
a faces the small gear 30. Therefore, when the switch 15 shown in FIG. 2 is closed, the turning operation of the small gear 31 is not transmitted to the large gear 31.

FIG. 3 shows a first torsion bar section 50 and a second torsion bar section in the energy storage section 2 for urging the first lever 17 and the second lever 33 to rotate in one direction. FIG. 6 is a cross-sectional view illustrating a configuration of a second embodiment. As shown in FIG. 3, the first torsion bar portion 50 that urges the first lever 17 to rotate includes a first torsion bar 22 and a second torsion bar 28. One end of the first torsion bar 22 is fixed to the main body 1, and one end of the second torsion bar 28 is connected to the first lever 17 via a rotation shaft 26. Also, the first torsion bar 22
Each end of the protruding side of the second torsion bar 28 is fixed to the first joint 20. A first guide 37 is fixed to the first joint 20, and the first guide 37 is a first guide forming a part of the housing 18 of the energy storage unit 2.
Are supported by a first pin 19a provided on the cover 34 of the first embodiment. Therefore, by rotating the first lever 17 in one direction, the second torsion bar 28 connected to the first lever 17 is twisted, and the restoring force due to this torsion force is applied to the first torsion bar portion 50. It is accumulating. That is, the restoring force of the first torsion bar portion 50 is such that the first torsion bar 22 is twisted about its central axis, and the first torsion bar 22 and the second torsion bar 28 are connected to the first pin 19a. Are stored in the first torsion bar portion 50 by rotating around the center. Therefore, the first torsion bar 2 connected in parallel
The second and second torsion bars 28 have the same function as a single torsion bar device that is connected in series and configured linearly.

On the other hand, a second torsion bar portion 60 disposed in parallel with the first torsion bar portion 50.
Is a third torsion bar 23 having one end fixed to the main body 1.
And a fourth torsion bar 29 having one end connected to the second lever 33 via the rotation shaft 27. This second
The other end of the torsion bar portion 60 is fixed to the second joint 21 similarly to the first torsion bar portion 50, and the second guide 3 is attached to the second joint 21.
The second guide 38 is supported by a second pin 19b provided on the first cover 34. Therefore, by rotating the second lever 33 in one direction, the fourth torsion bar 29 is twisted,
The restoring force due to this torsional force is accumulated in the second torsion bar portion 60.

FIGS. 4 (a), (b) and 5 (a), (b) are cross-sectional views taken along line CC in FIG. 2. FIG. 4 (a) shows the trip trigger 12 and the trip lock pin. 71 shows a contact state.
One end of the trip lock pin 71 is engaged with the trip trigger 12, and a screw portion 71 a at the other end is screwed into a screw portion 74 of the frame of the main body 1. As shown in FIG. 8A, a hexagonal groove 71b is formed in the axial center of the screw portion 71a of the trip lock pin 71.
By fitting and rotating the hexagonal projection provided on the main body 1, the trip trigger 12 can be fixed to the frame of the main body 1 via the trip lock pin 71, or can be detached. FIG. 5A shows a state in which the closing trigger 7 and the closing lock pin 70 are in contact with each other. The closing lock pin 70 is moved forward and backward by rotating the key 72 in the same manner as the above-mentioned trip lock pin 71 to move forward and backward. Or stick to
Or it can be dissociated.

Next, the operation will be described. First, the opening / closing drive in a state where the trip lock pin 71 and the closing lock pin 70 are not fixed to the frame of the main body 1 will be described. In the closed state of the switch 15 shown in FIG.
The tripping electromagnet 13 is excited, and the tripping plunger 14
Is driven rightward, the trip trigger 12
Rotates clockwise about the shaft 12a. The rotation of the trip trigger 12 causes the trip latch 10 to rotate counterclockwise about the shaft 10 a, thereby disengaging the trip latch 10 from the first pin 11 of the first lever 17. .
As a result, the first lever 17 urged by the first torsion bar portion 50 rotates in the direction of arrow A to disengage the movable contact of the switch 15 that is interlocked with the first lever 17. Operate in the direction. FIG. 6 shows an operation state when the switch 15 is opened. That is, as shown in FIG. 6, when the switch 15 is in the open state, the release latch 10 is not in contact with the closing trigger 7, and the closing trigger 7 is in a rotatable state. At this time, the first torsion bar portion 50 that has driven the first lever 17
Is releasing its stored resilience.

In the open state of the switch 15 shown in FIG. 6, the closing electromagnet 8 is excited and the closing plunger 9 is driven to the right, so that the closing trigger 7 is moved to the shaft 7a.
The closing latch 6 is rotated in the clockwise direction around
It rotates counterclockwise around a. When the closing latch 6 rotates, the engagement between the closing latch 6 and the second pin 4 is released. As a result, since the large gear 31 provided with the second pitch is urged by the second torsion bar portion 60 via the second lever 33 and the link rod 32, the rotation in the direction of arrow C is performed. By the movement, the cam 3 comes into contact with the roller follower 5 rotatably provided on the first lever 17, and presses the first lever 17 to rotate in the direction of arrow D. For this reason, the first lever 17 and the link mechanism 16
The movable connector of the switch 15, which is mechanically connected via the switch, is turned on.

FIG. 7 shows a state in which the first lever 17 rotates in the direction of arrow D and the movable contact of the switch 15 is closed. When the switch 15 shown in FIG. 6 changes from the open state to the switch 15 shown in FIG. 7, the first lever 17 rotates in the direction of arrow D and is connected to the first lever 17. The first torsion bar portion 50 is connected to the first lever portion 17.
The restoring force is accumulated by the torsional force due to. Therefore, when the switch 15 shown in FIG. 7 is in the closed state, the restoring force is stored in the first torsion bar portion 50, while the restoring force of the second torsion bar portion 60 is released. ing. In the present embodiment, the releasing force of the second torsion bar portion 60 is set to the third level so that the rotational driving force is stored in the first torsion bar portion 50 by the releasing operation of the second torsion bar portion 60. The torsion bar portion 50 is selected to be larger than the restoring force.

When the switch 15 shown in FIG. 7 is in the closed state,
By rotating the small gear 30 by driving a device provided outside the apparatus, for example, an electric device, the large gear 31 is rotated to rotate the second lever 33 in the direction of arrow E. That is, by rotating the second lever 33 in the direction of arrow E, the restoring force is accumulated in the second torsion bar portion 60 of the energy accumulating portion 2, and the switch 15 shown in FIG. State. When shifting from the closed state shown in FIG. 7 to the closed state shown in FIG. 2, the action line of the link rod 32 intersects the rotation center point of the large gear 31 and the second lever 33 shown in FIG.
Is rotated in the direction of arrow B, whereby the large gear 31 is in a state of rotating in the direction of arrow C. Further, as shown in FIG. 2, when the switch 15 is closed, the second torsion bar portion 60 is charged and the second pin 4 is turned on by the closing latch 6.
When engaged with the small gear 3, the toothless portion 31a of the large gear 31
0. For this reason, in the closed state shown in FIG. 2, even if the small gear 30 is rotated, the turning operation is not transmitted to the large gear 31, and the closed state shown in FIG. 2 is maintained.

On the other hand, in FIG. 2, FIG. 4 (a), and FIG. 5 (a), the tripping electromagnet 13 is mounted while the trip prevention lock pin 71 and the insertion prevention lock pin 70 are fixed to the frame of the main body 1. When excited, the tripping plunger 14 is driven to the right, so that the tripping trigger 12 attempts to rotate clockwise about the shaft 12a, but comes into contact with the tripping prevention lock pin 71. Rotation is prevented. Therefore, the release latch 10 and the first lever 17
Of the first lever 1
The movable contact of the switch 15 that is linked with the switch 7 is not driven in the opening direction. On the other hand, when the closing electromagnet 8 is excited, the closing plunger 9 is driven rightward, so that the closing trigger 7 attempts to rotate clockwise about the shaft 7a, but contacts the closing prevention lock pin 70. Rotation is prevented. Therefore, the closing latch 6 cannot rotate around the shaft 6a. As a result, the second torsion bar 60
However, since the engagement between the second pin 4 of the large gear 31 and the closing latch 6 is not disengaged, the large gear 31 is moved in the direction of arrow C. Is prevented, and the cam 3 fixed coaxially with the large gear 31 cannot rotate in the C direction. Therefore, the first lever 17 cannot be pressed so as to rotate in the direction of arrow D. Accordingly, the movable contact of the switch 15 mechanically connected to the first lever 17 via the link mechanism 16 is not closed. When the closing trigger 7 and the releasing trigger 12 are fixed to the frame of the main body 1 via the release preventing lock pin 71 and the closing preventing lock pin 70 as described above, neither the releasing operation nor the closing operation is possible. Safety of work such as assembly, adjustment, and inspection is maintained.

After the assembly, adjustment, and inspection are completed, the protrusions of the key 72 are inserted into the grooves 71b, 70b of the trip-preventing lock pin 71 and the insertion-preventing lock pin 70, and are rotated to operate. , 70 by removing
Normal trip operation and closing operation can be performed.

Embodiment 2 FIG. In the first embodiment, as shown in FIG. 8A, the shape of the convex portion of the key 72 matches the hexagonal shape of the grooves 70b, 71b of the lock pin 71 and the lock pin 70. When there are a large number of switches in the same plant, or when assembling, adjusting, and inspecting another circuit breaker, the safety cannot be maintained unless each circuit breaker has a different shape. In other words, for example, as shown in FIG. 8B, if the groove 75b of the lock pin 75 and the convex portion of the key 76 are square, other keys cannot be used, so that careless opening and closing operations can be prevented. . In addition, by using not only the above-mentioned square but also various polygons, safer work can be secured.

[0020]

As described above, according to the present invention, in the switch operating device, the screw is screwed into the main body frame near the tripping means and the closing means, and is advanced and retracted by a rotation operation using an external key. A trip / insertion prevention lock pin that locks or disengages the functions of the tripping means and the closing means is provided, so that an operator who does not have a key cannot operate the switch, so that safe assembly, There is an effect that operations such as adjustment and inspection can be achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a switch operating device according to Embodiment 1 of the present invention.

FIG. 2 is a configuration diagram showing the inside of a main body in FIG. 1;

FIG. 3 is a cross-sectional view illustrating a configuration of an energy storage unit in FIG.

FIG. 4 is a cross-sectional view taken along line CC in FIG. 2, showing an operation of a drawer prevention lock pin.

FIG. 5 is a cross-sectional view taken along line CC in FIG. 2, showing an operation of a closing prevention lock pin.

FIG. 6 is a configuration diagram showing the inside of the main body in FIG. 1, showing a state of an opening operation.

FIG. 7 is a configuration diagram showing the inside of the main body in FIG. 1, showing a state of a closing operation.

FIG. 8 is a perspective view showing a configuration of a trip / insertion prevention lock pin and a key according to the first and second embodiments of the present invention.

FIG. 9 is a perspective view showing a configuration of a conventional switch operating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Energy storage part 7 Closing trigger 12 Tripping trigger 15 Switch 17 First lever 19a First pin 19b Second pin 20 First joint 21 Second joint 22 First torsion bar 23 Third torsion Bar 28 Second torsion bar 29 Fourth torsion bar 30 Small gear 31 Large gear 32 Link rod 33 Second lever 70 Lock-in prevention lock pin 71 Trip prevention lock pin 72 Key

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01H 33/40 H01H 3/54 H01H 33/46

Claims (2)

(57) [Claims] A switch driving means for driving a switch for opening and closing an electric circuit, the switch driving means having a tripping means, a closing means and an urging force accumulating means, and protruding from the switch driving means. Opening biasing means having a first elastic body and a second elastic body arranged in parallel for biasing the switch driving means in the opening direction of the switch, wherein the first and second elastic bodies are provided. An end of the elastic body is provided in parallel with the opening urging means, and is provided in parallel with the opening urging means, the opening urging means fixed to the first joint part, and the switch driving means. Opening means having a third elastic body and a fourth elastic body arranged in parallel for urging a rotational force in the opening direction of the switch, wherein an end of the third and fourth elastic bodies is a second elastic body. An operation device for a switch provided with an opening biasing means fixed by a joint portion, wherein Equipped with a trip / injection prevention lock pin which is screwed into the main body frame near the step and the input means, and which moves forward and backward by a rotation operation by an external key to lock or disengage the functions of the tripping means and the input means. A switch operating device, characterized in that: 2. A trip pin according to claim 1, wherein said lock pin has a substantially cylindrical shape, has a threaded portion and a polygonal groove on a head thereof, and has a key fitted into said groove portion. Switchgear operating device.