JPH0330250B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote device for a circuit or disconnector, and in particular, it can be opened and closed by remote control via an electric motor, and can be easily opened or closed by a manual handle provided on the circuit or disconnector. This invention relates to a remote control device for circuits and disconnectors that can be opened and closed directly.

FIGS. 1A and 1B are disclosed in Japanese Patent Application No. 1812-1982 (Japanese Patent Application Laid-open No. 93626-1982) previously filed by the applicant. An example of a remote control device for circuit breakers and breakers is shown. Here, 1 is a circuit or disconnector, 2 is an opening/closing lever thereof, and 3 is a board provided on the upper part of the opening/closing lever 2. Support metal fittings 4A and 4B are provided on this substrate 3, and a rotary shaft 5A of an operating motor 5 and a rotatable threaded rod 6 directly connected thereto are pivotally supported between the support metal fittings 4A and 4B. .

Reference numeral 7 designates a sliding guide rod which is installed parallel to the threaded rod 6 between the support fittings 4A and 4B, 8 is a sliding frame mounted so as to be able to slide freely along the guide rod 7, and 9 is a screw rod. This is a loosely fitting nut that is loosely screwed into the guide rod 6 and is slidable along the guide rod 7. However, this loose fitting nut 9 and sliding frame 8
A buffer spring 10 is provided between the two.

Furthermore, 11 is an operation handle, and handle 1
1 has a handle portion 11A, a socket portion 11B, and a tripping plate 11C fitted into the socket portion 11B. Reference numeral 12 denotes a connecting rod fixed to the opening/closing lever 2, and the connecting rod 12 and the tripping plate 11C of the handle 11 are fitted together so as to be slidable in the vertical direction as shown in FIGS. 2A and B. Connecting rod 12
They are connected to each other via an oblong hole 13 provided in and a screw pin 14 passing through the oblong hole 13.

Therefore, the tripping plate 11C of the operation handle 11
A coil spring 15 is provided between the handle 11 and the connecting rod 12, and unless the handle 11 is pushed down, it will be pulled up by the spring force of the spring 15, and the pin 14 will not engage with the upper part of the oblong hole 13. (See Figure 2B).

Furthermore, in FIGS. 2A and 2B, 12A is a locking part of a notch provided in the connecting rod 12, and when opening and closing is performed by remote control as described later, a link attached to the sliding frame 8 is used. Member 16
By engaging the locking pin 16A with the locking portion 12A, the operating handle 11 is moved in the opening/closing direction.

That is, as shown in FIG.
A locking pin 16A is provided at the end of the link member 16, and the link member 16 itself is provided with a rotation pin 16A on the side surface of the sliding frame 8.
The board 3 is rotatably mounted via the board 7.
The spring force of the spring 18, which is hooked between the locking pin 16A and the locking pin 16A, is always biased toward the locking portion 12A shown in FIGS. 2A and 2B.

The operation of the remote control device configured in this manner during remote control will be described. During such operation, the operating handle 11 is not touched by human hands, and therefore, the locking pin 16A of the link member 16 is engaged with the locking portion 12A of the connecting rod 12. .

Therefore, in the positions of the handle 11 and the opening/closing lever 2 as shown in FIGS. 1A and 1B, it is assumed that the circuit breaker 1 is in the open state, and in this state, the circuit can be closed from the remote control position. to motor 5
When the nut 9 is biased to rotate in the forward direction, the floating nut 9 moves to the left along the threaded rod 6 as the nut 9 rotates, and the sliding frame 8 is also moved to the left via the spring 10.

Therefore, the handle 11 and the opening/closing lever 2 are engaged with the sliding frame 8 via the link member 16.
As the sliding frame 8 slides to the left, the breaker 1 is rotated counterclockwise in FIG. can be closed.

Furthermore, in order to open the circuit breaker 1 from the closed state by remote control, the motor 5 must be turned on at the operating position.
By such an operation, the sliding frame 8 is moved from the left to the right in FIG. 1A, and the opening/closing lever 2 is then rotated clockwise from the left. It is possible to open the circuit breaker by rotating it to the open position.

Note that the spring 10 serves as a buffer during the remote opening/closing operation as described above.

Next, the case where the sheath breaker 1 is operated on the spot will be described. In this case, lightly press the handle 11A of the handle 11 and apply force in the direction of the arrow P shown in FIGS. 2A and B to rotate the handle 11 from right to left or from left to right. Bye. That is, by simply pressing the handle portion 11A downward, the tripping plate 11C moves downward against the spring force of the spring 15, and the link member 16 that was engaged with the locking portion 12A of the connecting rod 12 is removed. The locking pin 16A is released from the engagement.

In this way, since the opening/closing lever 2 can be operated together with the handle 11 independently of the sliding frame 8, the opening/closing operation of the shingle breaker can be easily performed manually.

However, such conventional remote control devices for circuits and disconnectors still have the following problems.

(1) Since the structure is such that the handle and opening/closing lever are operated by reciprocating the loose-fitting nut by the rotational movement of the threaded rod, the loose-fitting nut can be moved smoothly and The operation must generate enough force to operate the opening/closing lever, and this repetition requires special thread machining, which is costly.

(2) In general, since the electric motor and rotation speed are high, if it is used as is without deceleration, an impact load will be applied to the breaker during opening and closing operations, requiring deceleration, which is expensive.

(3) During manual operation, it is necessary to push the handle handle repeatedly, which is troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to solve these problems and provide a robust remote control device for circuits and disconnectors that is easier to operate and can be obtained at a lower cost.

In order to achieve such an object, the present invention includes a rotary operation shaft that is rotated by a rotary operation handle attached to one end, a rotary operation shaft that is rotatably supported,
a swing lever connected to the rotary operating shaft via a first clutch that permits rotation only in one direction; a second clutch that permits rotation only in the same direction as the first clutch; A remote control motor swings and drives this swing lever via a cam, a slide plate that is supported so as to be capable of linear reciprocating movement and is engaged with an opening/closing operation handle of a circuit board and a stepper for opening/closing operation. The crank arm is coupled to the other end of the rotary operation shaft and linearly drives the slide plate by the rotational force of the rotary operation shaft.

Therefore, according to the present invention, during remote operation, the rotation of the remote control motor causes the swing lever to swing, and the rotary operation shaft is rotated step by step in one direction, thereby causing the slide plate to move forward or backward. During manual operation, the slide plate can be moved forward or backward to open or close the circuit by simply rotating the rotary operating handle half a turn in one direction.

The present invention will be explained in detail below based on the drawings.

FIGS. 4A and 4B show an embodiment of the invention, in which 20 is a frame 2 attached to the circuit breaker 1.
2 is a slide plate that is slidable in the horizontal direction in the figure along the lower surface of the frame 21, and 23 is a pedestal for mounting the frame 21.
This is a guide portion protruding from the lower surface of the frame 21 to slidably support the frame 21.

Further, the slide plate 22 has bent portions 22A and 22B, and these bent portions 22A and 22B
Two mutually parallel guide rods 24 are fixed between. 25 is a lever holding member that passes through these two guide rods 24 and holds the opening/closing lever 2 between them; 26 is a holding member that is hooked along the guide rod 24 between the holding member 25 and the bent portions 22A and 22B. The holding member 25 is held by the spring force exerted from both sides by these holding springs 26.

Furthermore, the slide plate 22 has an oval sliding contact hole 27 as shown in FIG. 5, and a pair of leaf springs 28A and 28B are fixed to the upper surface thereof (see FIG. 4B). Next, a mechanism for sliding the slide plate 22 left and right will be explained with reference to FIG. 5.

29 is an arm having a sliding pin 29A that fits into the sliding contact hole 27, and this arm 29
is fixed to the lower end 30A of a rotary operation shaft (hereinafter referred to as an opening/closing operation shaft) 30 with a washer 31 and a nut 32. Furthermore, this operating shaft 30 is provided with a unidirectional clutch (hereinafter referred to as a second clutch) 33.
A swing lever 34 is attached to the operating shaft 30 via a support seat 36, and the operating shaft 30 is pivotally supported by a one-way clutch (hereinafter referred to as a first clutch) 35 fixed to a support seat 36.

However, here, these first clutches 3
5 and the second clutch 33 together ensure that the shaft 30 is restrained when attempting to rotate in a counterclockwise direction. 37 is a manual handle attached to the top of the shaft 30, and 38 is a C ring fitted between the attachment parts to prevent it from coming off.

Further, the swing lever 34 has a cam fitting groove 34B in its arm 34A, and a cam 41 attached to the rotating shaft of the remote control motor 40 is inserted into the cam groove 34B.
Fit together.

Returning again to FIGS. 4A and 4B, 42 is a changeover switch attached to the bottom of the frame 21, which is attached to the slide plate 22 when the slide plate 22 is slid to the right or left during remote control. When the changeover switch 42 is pressed by either the leaf spring 28A or 28B, the motor 40 is stopped and the opening/closing operation is completed.

Next, the opening/closing operation of the remote control device configured as described above will be explained. In FIGS. 4A and 4B, in such a state that the opening/closing lever 2 is tilted to the right, it is assumed that the circuit breaker 1 is maintained in a closed state, for example, and the current remote operation position is When the motor 40 is driven from
The lever 34 makes an eccentric movement within the shaft and swings the lever 34.

When the lever 34 swings, its arm 34A
moves in the clockwise direction, the operating shaft 30
and the second clutch 33, the operating shaft 3
0 counterclockwise rotation, and since the rotation of the test shaft 30 is restrained by the second clutch 33, the operation shaft 30 also rotates in the arm portion 34A.
rotates clockwise with. Note that, at this time, the first clutch 35 does not restrict the clockwise rotation of the operating shaft 30.

Subsequently, when the arm portion 34A moves counterclockwise, the operating shaft 30 is not restrained by the second clutch 33, but the operating shaft 30 is moved in the counterclockwise direction by the first clutch 35. Since the operating shaft 30 does not rotate in any direction, only the arm 34A moves counterclockwise due to the slippage of the second clutch 33.

Thus, as the motor 40 rotates, the operating shaft 3
0 continues to rotate only in the clockwise direction in small increments. As the operating shaft 30 rotates, the arm 29 rotates, and the pin 29A of the arm 29 slides in the sliding hole 27 of the slide plate 22, moving the slide plate 22 to the left in the figure. Therefore, the opening/closing lever 2 held by the holding member 25 is tilted to the left as the slide plate 22 moves, and when the changeover switch 42 is pressed by the leaf spring 28B, the motor 40 is stopped and The circuit opening operation of the disconnector 1 is completed.

Furthermore, in order to perform a closing operation from an open state,
It is sufficient to short-circuit the switch 42 from the operating position and turn it on, thereby turning the motor 4 on.
0 and similarly rotate the operating shaft 30 in the clockwise direction, the slide plate 22 is moved from the left to the right, and the circuit closing operation is performed at the position where the leaf spring 28A presses the switch 42. It can be concluded.

Next, in the case of manual operation, the opening/closing lever 2 can be continuously placed in the open and closed positions simply by rotating the handle 37 in a clockwise direction. Note that the slide plate 22 is designed to be operated with a stroke that goes slightly beyond the opening and closing positions of the opening/closing lever 2 to ensure reliable opening and closing.
is absorbed by the spring force.

While the opening/closing lever 2 is in the middle of the opening position and closing position in the process of such operation, the opening/closing lever 2
The reaction force is transmitted to the operating shaft 30 via the slide plate 22, arm 29, etc., so the operating shaft 30 receives a counterclockwise rotational force. Since rotation in the direction is prevented, the opening/closing lever does not move in the opposite direction to the operating direction due to its own reaction force during the opening/closing operation, and the circuit or disconnector can be reliably opened/closed.

As explained above, according to the present invention, the opening/closing operation shaft is provided with a first clutch, a second clutch and an arm having the same directionality, and the operation shaft is pivotally supported via the first clutch. , a swing lever is installed to rotate the operating shaft in only one direction via a second clutch, and the swing lever is swung by the eccentric movement of a cam attached to the shaft of the remote control motor; The rotation of the motor reciprocates the slide plate and guides the opening/closing lever to the open and close positions. Therefore, during remote control, the motor rotates the operating shaft in small increments in one direction, allowing the control lever to reciprocate through the arm and slide plate. You can open and close the breaker by operating the opening/closing lever.
During manual operation, it can be opened and closed by simply turning the operating shaft half a turn in one direction, and unlike conventional systems, there is no need for expensive screw machining or motor deceleration devices, and manual operation is easy, making it even more convenient for the operator. Easy to use.

[Brief explanation of the drawing]

Figures 1A and 1B are a side view and a plan view, respectively, showing an example of the configuration of a conventional circuit breaker remote control device, and Figures 2A and 2B show a connection mechanism between the manual operation handle and the opening/closing lever. FIG. 3 is a side view of a link member used also as a connecting member during remote operation of the remote control device, and FIGS. 5 is a side view and a top view taken from line A-A showing an example of the configuration of a remote control device for a disconnector and a disconnector, and FIG. 5 shows a remote and manual operation handle, remote motor, and slide plate. FIG. 2 is an exploded perspective view. 1...Circuit disconnector, 2...Opening/closing lever, 3...
Substrate, 4A, 4B... Support metal fittings, 5... Operation motor, 5A... Rotating shaft, 6... Threaded rod, 7... Guide rod, 8... Sliding frame, 9... Loose fitting nut, 10...
...Buffer spring, 11...Operation handle, 11A...
Handle part, 11B...Socket part, 11C...Trip plate, 12...Connecting rod, 12A...Locking part, 13
...Oval hole, 14 ... Screw pin, 15 ... Coil spring, 16 ... Link member, 16A ... Locking pin, 17 ... Rotating pin, 18 ... Spring, 20 ...
Pedestal, 21... Frame, 22... Slide plate,
22A, 22B...Bending portion, 23...Guide portion, 24...Guide rod, 25...Holding member, 26...
...Retaining spring, 27...Sliding contact hole, 28A, 28B...
...Plate spring, 29...Arm, 29A...Sliding pin, 30...Operation shaft, 30A...Lower end, 31...
... Washer, 32 ... Nut, 33 ... Second clutch, 34 ... Swinging lever, 34A ... Arm, 34
B...Groove, 35...First clutch, 36...Support seat, 37...Manual handle, 38...C ring,
40...Motor, 41...Cam, 42...Switch.

Claims (1)

[Scope of Claims] 1. A rotary operation shaft that is rotated by a rotary operation handle attached to one end; and a second rotary operation shaft that rotatably supports the rotary operation shaft and is configured to allow rotation in only one direction. a second one-way clutch that transmits rotational force in only the same direction as the first one-way clutch; and a rocking motion in only one direction through the second one-way clutch. a swinging lever connected to the rotational operation shaft so as to be transmitted to the rotational operation shaft; a remote control motor that swings and drives the swinging lever via an eccentric cam; a slide plate that is supported and engaged with the opening/closing operation handle of the circuit breaker and can be opened/closed; and the slide plate is connected to the other end of the rotary operation shaft, and the slide plate is linearly driven by the rotational force of the rotary operation shaft. A remote control device for a circuit or disconnection device, characterized in that it is equipped with a crank arm for controlling a circuit.