JP2806167B2 - Interlock device for circuit breaker storage box door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlock device for a circuit breaker storage box door, particularly, a door cannot be opened when the circuit breaker is closed, and the door can be opened when the circuit breaker is open. The present invention relates to such an interlock device.

[0002]

2. Description of the Related Art In a conventional interlock device for a circuit breaker storage box door, a lever for transmitting the open / close state of the circuit breaker body as a rotational displacement is fixed on a main shaft of the circuit breaker body. The main body side interlock mechanism that has an arm that pulls the interlock wire by the rotation of this lever and the device is installed at the tip of the interlock wire, and the interlock wire is displaced to rotate the hook with the storage door and lock the door , And a door-side interlock mechanism having a function of releasing is connected by an interlock wire.

[0003]

In this type of conventional interlock device, the interlock wire is connected only in one direction (horizontal direction) from the door-side interlock mechanism. In some cases, there are problems such as an increase in the wiring space for the interlock wire and difficulty in wiring.

The present invention has been made to solve such a problem, and when an interlock device is installed at an arbitrary position in a storage box, a space occupied by wiring of an interlock wire to a door-side interlock mechanism is reduced. It is an object of the present invention to provide a circuit breaker storage box door interlock device which can be minimized and can be easily mounted according to the storage box.

[0005]

According to the present invention, there is provided an interlock device for a circuit breaker storage box door according to the present invention. It has a position.

[0006]

According to the present invention, the circuit breaker main body and the lock mechanism for locking the storage box door are connected by an interlock wire, and the rotation displacement member of the door side interlock mechanism is horizontally and vertically. , The space occupied by the interlock wire can be minimized in accordance with the storage box and can be easily mounted.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. 1 to 5 are views showing a vertical arrangement of the interlock wires, and FIGS. 6 to 8 are views showing a horizontal arrangement of the interlock wires. 1 and 6, reference numeral 1 denotes a circuit breaker having an operation surface 1a. A mounting frame 2 supports the circuit breaker 1. Reference numeral 3 denotes a main body side interlock mechanism, which is fixed to the mounting frame 2. 4 is a door side interlock mechanism, 5 is an interlock wire, and connects the main body side interlock mechanism 3 and the door side interlock mechanism 4. Reference numeral 6 denotes a storage box door, and 7 denotes a hook member fixed to the storage box door 6.

2 and 4, reference numeral 8 denotes a main shaft of the circuit breaker 1, and reference numeral 9 denotes a lever fixed on the main shaft 8, which rotates according to the open / close state of the circuit breaker 1.
Reference numeral 10 denotes an arm for transmitting the rotation displacement to the interlock wire 5, and the rotation of the lever 9 is transmitted by the roller 10a and the pin 10b. Reference numeral 11 denotes a tip end storage portion of the interlock wire 5, and the rotational displacement of the arm 10 is transmitted as a displacement to one end 5 a of the interlock wire via the pressing spring 12.

3 and 5, reference numeral 13 denotes a rotation displacement member (plate) which is rotatably mounted on the door-side interlock mechanism 4 by a shaft 14. Two hook portions are provided on the outer periphery set at 90 degrees. 13a and 13b. Reference numeral 15 denotes a hook which is engaged with the engaging member 7 of the storage box door 6, and is provided on the rotation displacement member 13. Reference numeral 16 denotes a pull spring, which urges the rotation displacement member 13 in the unlocking direction. The other end 5b of the interlock wire is connected to the rotation displacement member 13 in FIGS.
7 and FIG. 8, it is locked by the locking portion 13 b of the rotation displacement member 13.

Next, the operation will be described. When the circuit breaker 1 is off as shown in FIGS. 1 and 2, the door-side interlock mechanism 4 is in the unlocked state shown in FIG. When the circuit breaker 1 is turned on as shown in FIG. 4, the main shaft 8 rotates counterclockwise and is transmitted to the arm 10 via the lever 9. The arm 10 includes an interlock wire tip storage section 11 and a pressing spring 12.
, The one end 5a of the interlock wire is pulled, so that the turning displacement member 13 of the door-side interlock mechanism 4 is turned counterclockwise. When the rotation displacement member 13 rotates in the counterclockwise direction, the hook 15 is fixed to the door by the hooking member 7.
The circuit breaker storage box door 6 can be locked as shown in FIG. When the circuit breaker 1 is turned off from this on state, the main body side interlock mechanism 3 returns to the state of FIG.
The turning displacement member 13 pulled by the interlock wire 5 is turned clockwise by the pulling spring 16, and the lock between the hook 15 and the door-side engaging member 7 is released.

As shown in FIGS. 1 to 5, one end 5b of the interlock wire is connected to a hook 13a of the rotation displacement member 13.
1, the vertical connection of the interlock wire 5 to the door-side interlock mechanism 4 becomes possible, and the wiring space to the door-side interlock mechanism 4 can be minimized as shown in FIG. 6 to 8
When one end 5b of the interlock wire is connected to the locking portion 13b of the rotary displacement member 13 as shown in FIG. 7, the horizontal connection of the interlock wire 5 to the door-side interlock mechanism 4 becomes possible. Interlock wire wiring can be performed in a convenient direction according to the storage box.

[0012]

As described above, according to the present invention, the space required for the interlock wire can be minimized in accordance with the circuit breaker storage box, and the wiring can be easily connected.

[Brief description of the drawings]

FIG. 1 is a vertical arrangement view of an interlock wire showing one embodiment of the present invention.

FIG. 2 is a view showing a main body side interlock mechanism of FIG. 1;

FIG. 3 is a view showing a door-side interlock mechanism of FIG. 1;

FIG. 4 is a diagram showing an operation state of FIG. 2;

FIG. 5 is a diagram showing an operation state of FIG. 3;

FIG. 6 is a view showing a horizontal arrangement of an interlock wire.

FIG. 7 is a view showing the door-side interlock mechanism of FIG. 6;

FIG. 8 is a diagram showing an operation state of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circuit breaker 2 Mounting frame 3 Main body side interlock mechanism 4 Door side interlock mechanism 5 Interlock wire 6 Storage box door 7 Door side hooking member 8 Circuit breaker main shaft 9 Lever 10 Arm 13 Rotation displacement member 13a Lock Part 13b locking part 15 hook

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01H 33/48 H01H 9/22 H01H 31/06

Claims (1)

(57) [Claims] 1. A main body side interlock mechanism provided in a circuit breaker main body, and a door side interlock mechanism connected to the main body by an interlock wire, and a lock with a storage box door by opening / closing of the circuit breaker. In the interlock device of the circuit breaker storage box door where the stop and the release are performed, the door-side interlock mechanism is provided with a member capable of connecting the interlock wire from a plurality of directions such as horizontal and vertical directions. Circuit breaker storage box door interlock device.