JP2592674Y2 - Switchgear operating rod - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating rod of an opening and closing device for connecting a main body of the opening and closing device and an operating mechanism.

[0002]

2. Description of the Related Art Conventionally, an operation rod for connecting an opening / closing device main body and an operation mechanism thereof is generally configured as shown in FIG. The output shaft 201 of the operation mechanism is rotated by manual operation or electric operation, and the output lever 202 and the link 30 are rotated.
The output shaft 101 of the switchgear main body is driven via the control lever 1 and the operation lever 102 to open and close the current-carrying portion of the switchgear main body.

[0003]

SUMMARY OF THE INVENTION When a short-circuit fault current flows in a closed state of a current-carrying portion of a switchgear main body, the operating shaft 101 has a direction in which the current-carrying portion of the switchgear main body is opened by an electrode arrangement of the current-carrying portion. Electromagnetic force may act. Conventionally, in such a case, the input holding force of the operating mechanism is increased,
There is a drawback that the energized part must not be opened by electromagnetic force. In view of the above, the present invention provides an operation rod that does not need to apply a large holding force to the operation shaft from the operation mechanism when the energizing section of the opening / closing device body is in a closed state.

[0004]

In this invention, a link mechanism in which the operating shaft of the opening / closing device main body and the lever of the output shaft of the operating mechanism are connected by two links is used, and a rotating pair connecting the two links is used. A guide having a guide part for guiding the movement and a hook part for restricting the movement is provided.

[0005]

In the operation rod of the opening / closing device of the present invention configured as described above, the rotating pair connecting the two links moves along the guide portion of the guide, and is rotated by the rotation of the output shaft of the operation mechanism. The operation shaft of the switch body is driven to open and close the current-carrying part of the switch body. In a state in which the energizing section of the switchgear body is closed, the rotating pair is hung on the hook of the guide. In this state, the force applied to the operation shaft from the current-carrying portion of the switchgear main body can be received by the hook portion of the guide.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given based on the embodiment shown in FIGS. Operation shaft 101 and operation mechanism 20 of switchgear body 100
0 output shaft 201 includes lever 102 and lever 2
02, lever 102, link 301, link 30
The lever 2 and the lever 202 are connected by pins 401, 402, and 403 so that they can rotate freely. Further, a rotatable roller 402a is provided on the pin 402, and the roller 402a moves along the guide portion 310a of the guide 310 and stops on the hook portion 310b. FIG. 2A shows a state in which a current-carrying part (not shown) of the switching device main body 100 is open, and FIG. 2B shows a state in which the power supply unit is closed. The closed state indicates a state in which the power supply unit of the switchgear body 100 can be energized, and refers to an “on” state or a “ground” state. Although the current-carrying part is not shown in the figure, the current-carrying part is composed of a fixed electrode and a movable electrode, and the movable electrode opens and closes by rotating the operation shaft 101.

When the operating mechanism 200 is manually or electrically operated from the open state shown in FIG.
By the driving force of the output shaft 201 of 0, the roller 402a moves along the guide portion 310a of the guide 310, the operation shaft 101 is driven, and a closed state shown in FIG. In this state, the roller 402a is hooked on the hook 310b. In the closed state, when a short-circuit fault current flows through the current-carrying portion of the switching device body 100 and an electromagnetic force is applied in the direction of opening, the force is applied to the operating shaft 101 and the lever 10.
2, the operation mechanism 200 is received by the hook 310b of the guide 310 via the link 301 and the roller 402a.
Irrespective of the input holding force, the current-carrying part of the switching device body 100 does not open. Output shaft 201 of operation mechanism 202
When the opening / closing device main body 100 is opened by the driving force, first, the state in which the roller 402a is locked by the locking portion 310b is released, and then a rotational force is applied to the operation shaft 101.
The current-carrying part of the switching device body 100 is opened. In the above,
Although a guide having an arc-shaped guide portion 310a and a notch-shaped engaging portion has been described, a guide having a groove or an oval hole shape can also be used.

[0008]

As described above, according to the present invention, even when a large electromagnetic force acts in the opening direction when the energizing portion of the switchgear body is closed, no force is applied to the output shaft of the operating mechanism. And the force may be reduced to a slight force depending on the angle of the hook. Therefore, the current-carrying part of the switchgear body is not opened by the electromagnetic force. Therefore, the force of the operation mechanism for maintaining the closed state can be dealt with with a very small force. In particular, it is effective for a device in which a large electromagnetic force acts when a short-circuit fault current flows. Also,
By devising the electrode arrangement of the conducting part to reduce the electromagnetic force,
There is no need to create a dead point with the lever and link of the output shaft to reduce or reduce the force received by the operating mechanism.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an operation rod of the present invention in an open state.

FIG. 2 shows a side view of FIG. 1, wherein (a) shows an open circuit state,
(B) shows a closed state.

FIG. 3 is a side view showing an example of a conventional operation rod.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Switch device main body 101 Operation shaft 200 Operation mechanism 201 Output shaft 102, 202 Lever 301, 302 Link 310 Guide 310a Guide portion 310b Hook portion 401, 402, 403 Pin 402a Roller

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-90426 (JP, A) JP-A-50-154748 (JP, A) Patent 130650 (JP, C1) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01H 31/02 H01H 33/42

Claims (1)

(57) [Scope of request for utility model registration] An operating rod for connecting an opening / closing device main body and an operating mechanism, wherein a link mechanism in which a lever of an operating shaft of the opening / closing device main body and a lever of an output shaft of the operating mechanism are connected by two links, A guide having a guide portion for guiding the movement of the rotating pair coupled to the link of the link and a guide having a latching portion for regulating the movement. An operating rod for an opening / closing device, wherein the operating rod is locked.