JPH026182B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an external operation handle device for a wiring shield and disconnector, and in particular, the wiring shield and disconnector incorporated in a power distribution board, control panel, etc. has a function as a door lock device for a panel door. This invention relates to an external operating handle device.

As a conventional external operation handle device for this type of wiring sheath breaker, for example, those shown in FIGS. 1A, B, and C are generally known. Here, 1
For example, numeral 3 is a wiring sheath disconnector built into the switchboard 2, and 3 is its panel door. 4 is the handle of the chopper disconnector 1, 5 is the operating shaft mounting plate attached to the handle cover 1A of the chopper disconnector 1, and the mounting plate 5
Further, a base plate 6 is fixed to the base plate 6, and a handle operating shaft (hereinafter simply referred to as the operating shaft) 7 for external operation is rotatably passed through the base plate 6, and a handle operating shaft 7 for external operation is rotatably passed through the base plate 6. A crank plate 8 is attached. Reference numeral 9 denotes a hook-shaped fork attached to the crank plate 8 via a crank pin 8A, and between the hook hands of this fork 9, the handle 4
is held. Reference numeral 10 denotes an operating shaft holding plate that slides on the outside of the base plate 6 and rotates together with the operating shaft 7.

Reference numeral 11 denotes a lever member that is interlocked with the rotation of the crank plate 8. The lever member 11 is rotatably attached together with a pin 12, and the lever member 11 is rotatably attached to the crank plate 8.
It has two arm parts 11A and 11B that are engaged with and interlocked with the protrusion 8B of the door, and a door lock part 11C. Furthermore, in FIG. 1C, 3A
1 is a door lock fitting attached to the panel door 3, and the door 3 is locked to the door disconnector 1 side by engaging the locking portion 11C of the lever member 11 with the locking groove 3B of the door lock fitting 3A.

In FIG. 1B, the posture 11L of the lever member 11 in the locked state and the posture 11U of the unlocked state are shown superimposed, and at the rotational positions 8O and 8F of the crank plate 8, the lever member 11 is in the locked state. This shows that the lever member 11 maintains the position 11L, and at the rotational position 8R of the crank plate 8, the lever member 11 maintains the unlocked position 11U.

That is, in the external operation handle device configured in this way, the rotation of the operation shaft 7 moves the crank plate 8 to the position 8O shown in FIG. When the handle 4 is rotated counterclockwise from the 8F position, the fork 9 can be used to interlock the handle 4 to turn the sheath disconnector 1 off.

If the crank plate 8 is further rotated in the same direction from this state to the reset/open position of 8R, during this time the protrusion 8 of the crank plate 8
B engages with the arm portion 11B of the lever member 11 and rotates the lever member 11 in the clockwise direction, so the lever member 11 assumes the posture 11U, and the lock is released for the first time here. That is, in the ON and OFF states of the breaker 1, the panel door 3
is maintained in a locked state, and the door lock is released only when the operating shaft 7 is rotated and the crank plate 8 is turned to the reset/open position 8R.

Next, regarding this kind of door lock mechanism,
This will be explained with reference to FIGS. 2A and B and FIGS. 3A and B.

In FIGS. 2A and 2B, 13 is a leaf spring attached to the base 6, and a lever locking part 13A and a lever holding part 13B are formed at the tip of the leaf spring 13 by bending. . Furthermore, 14 is a tension spring hooked between the lever member 11 and the base 6. As shown in the figure, in the positions 8O and 8F of the crank plate 8 when the breaker 1 is in the on and off state, the arm portion 11B of the lever 11 is further extended from the holding portion 13B of the leaf spring 13 to the position 8F of the crank plate 8. The base 6 is guided to the lower surface of the main body 13 by the spring force of the leaf spring 13 itself against the spring force of the tension spring 14.
The lock position 11L is maintained.

Next, rotate the operating shaft 7 further to rotate the crank plate 8.
When the crank plate 8 is turned to the reset/open position 8R as shown in FIG.
The lever member 11 is rotated by engaging with the side surface of B.
Therefore, the arm portion 11B is rotated from the state shown in FIGS. 2A and 2B to the position of the locking portion 13A of the leaf spring 13, and is locked by the spring force of the spring 13. It is locked to the stepped portion of the portion 13A.

In such a state, even if the crank plate 8 returns to the off position 8F, the protrusion 8
B is located in the recess between the two arm portions 11A and 11B of the lever member 11, and the lever member 11
remains in the unlocked position 11U and does not return to the locked position 11L. In this way, the user can freely open and close the panel door 3 by hand.

Furthermore, by operating the crank plate 8 to the on position with the panel door 3 closed, the protrusion 8B kicks the arm 11A of the lever member 11, and the arm 11B is forced into the plate. Spring 1
3 and move the lever member 11 as shown in Figure 2A.
It is possible to return to the locked posture 11L as shown in FIG.

In addition, in the case of this example, in order to unlock the shield breaker 1 while it is in the on state, the lever member 11 is
This is done by rotating the pivot pin (hereinafter referred to as release pin) 12 in the counterclockwise direction. Turn the release pin clockwise again to release the lever member 11 that is locked by 13A, and return to the locked position 11L.
It is necessary to return it to .

However, in the case of such a conventional external operation handle device, as described above, the
When unlocking and relocking the camera while it is on, it is necessary to return the release pin 12 to the lock position, so you may forget to perform the locking operation using the release pin 12, and if you do not perform this locking operation, the camera will be disconnected. There was a risk that the panel door 3 would open while the device 1 was on.

In view of the above-mentioned problems, an object of the present invention is to automatically return the lever member to the locked position when the release pin is released from the restraint of the hand in the case of unlocking using the release pin. To provide an external operating handle device for a wiring cutter and disconnector that eliminates the need for relocking with a release pin and prevents forgetting to close the switch.

In order to achieve such an object, the present invention provides a lock lever that engages with a door of a panel containing a wiring shield and disconnector in conjunction with an external operation handle and locks the door, and a lock lever that is capable of locking the door. a release pin supported by a base plate integral with the disconnector and rotatably holding the lock lever; a release lever formed integrally with the release pin and rotated by the release pin; and a leaf spring that holds the lock lever in the unlocked position when the lock lever is guided to the unlocked position in conjunction with the external operating handle; an engaging portion that engages with the lock lever when the pin is rotated and allows the lock lever to rotate together, and when the release lever is guided to the unlocked position in a state in which the release lever is engaged with the lock lever; The leaf spring is pushed up by the release lever, and the locking state between the leaf spring and the lock lever is released.

Therefore, according to the present invention, by rotating the external operating handle in one direction, the wiring shield and disconnector is turned on, and the lock lever is interlocked to hold the lock lever in the locked position by the spring force of the pullback. At the same time, by rotating the external operating handle in the other direction, the wiring shield and disconnector are turned off, and the lock lever is rotated against the spring force of the pullback spring, and the lock lever is turned off by the leaf spring. In addition, when manually operating the release pin to unlock the door, the release lever not only allows the lock lever (lever member) to be in the unlocked state, but also allows the release pin to be held in the unlocked position. Just by releasing the lever, you can release the lock lever from the leaf spring and return it to the locked state.
Unlike in the past, there is no need to forget to lock the lock while the disconnector is in the "on" state.

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

Below, Figure 1 A, B, Figure 2 A, B, Figure 3 A
The same reference numerals are used for the same parts as shown in and B, and detailed explanation thereof will be omitted. Fourth
Figures A and B and Figures 5A and B show an embodiment of the present invention, in which 22 is a release pin to which the lever member 11 is rotatably attached, and 23 is a release lever fixed to the release pin 22. be. That is, the release lever 23 rotates integrally with the pin 22 by rotating the release pin 22.

This release lever 23 has an engaging portion 23A that engages with the arm portion 11B, and also has a leaf spring support arm 23B. Furthermore, the leaf spring 13 is provided with a guide portion 13C at the locking portion 13A at its tip. The other configurations are the same as those shown in FIGS. 2A and 2B. Note that FIGS. 4A and 4B show a state in which the crank plate 8 is rotated by the operation shaft 7 to the reset open position 8R to perform unlocking.

In other words, if there is no disconnection or disconnection 1 as shown in Figure 2A,
from the on state and the 8O state of the crank plate 8, the fourth
When using the operating shaft 7 for external operation to reach the reset/open position as shown in Figure B,
3A and 3B, the projection 8B of the crank plate 8 is connected to the arm 1 of the lever member 11.
By pressing and rotating 1B, the arm 1
1B can be locked to the locking portion 13A of the leaf spring 13.

Next, the case of unlocking using the release pin 22 will be explained with reference to FIGS. 5A and 5B. FIGS. 5A and 5B show the unlocked state. That is, in this case, release pin 2
2 in the counterclockwise direction as shown in FIG. Rotate. Thus, first of all, the support arm 23B of the release lever 23
pushes up the leaf spring 13 as if inserted from the guide part 13C of the leaf spring 13, and at the same time pushes up the arm part 1 of the lever member 11.
1B is also introduced to the lower surface side of the leaf spring 13.

In such a state, the spring force of the leaf spring 13 is borne by the support arm 23B of the release lever 23, as shown in FIG. It is not restrained and is not locked.

Therefore, the operator can unlock the release state simply by turning the release pin 22 as described above, and after the operation, by releasing his hand from the release pin 22, the lever member 11 and the release lever 23 are released from the spring 14. It can be automatically returned to the locked state by force.

As described above, according to the present invention, when the door is unlocked by operating the release pin, the lever member is placed in the unlocked position via the release lever fixed to the release pin, and in this unlocked state, the lever member Since the lever member is not locked by the leaf spring, in such a case, the lever member can be returned to the locked position by the spring, simply by pulling the hand from the release pin, and when the door is closed again, the lever member will not be locked by the leaf spring. There is no need to operate the lock, and it is therefore useful to prevent forgetting to engage the lock.

Although the above explanation has been about the external operation handle device for wiring and disconnectors, the application of the present invention is not limited to this, and can be applied to switches and other devices that require this type of operation. Needless to say, it can be applied to a wide range of situations.

[Brief explanation of drawings]

Figures 1A and B are side and top views showing an example of the configuration of an external operating handle device for a conventional wiring sheath breaker, and Figure 1C is a side view taken from line AA in Figure 1B. 2A and 2B are a front view and a side view, respectively, showing an example of the door lock mechanism of the external operating handle device in a locked state, and FIGS. 3A and B are a front view and a side view, respectively, showing an example of the door lock mechanism of the external operating handle device in an unlocked state. FIGS. 4A and 4B are a front view and a side view, respectively, showing an example of the door lock mechanism in the external operation handle device of the wiring shield disconnector of the present invention in a state in which the door is unlocked using the operation handle, and FIGS. 5A and B 2A and 2B are a front view and a side view, respectively, showing an example of the door lock mechanism in an unlocked state using a release pin. 1...Shipping switch, 1A...Handle cover, 2...Switchboard, 3...Panel door, 3A...Lock fitting, 3B...
Lock groove, 4...Handle, 5...Mounting plate, 6...Base plate, 7...Operation shaft, 8...Crank plate, 8A...Crank pin, 8B...Protrusion, 8O, 8F, 8R...Position, 9...Fork, 10 ...Holding plate, 11...Lever member, 11A, 11B...Arm part, 11C...Door lock part, 11L, 11U...Position, 12...Pin, 13...
Leaf spring, 13A...locking part, 13B...holding part, 13
C...Guiding part, 14...Spring, 22...Release pin,
23... Release lever, 23A... Engaging portion, 23B...
support arm.

Claims (1)

[Scope of Claims] 1. A lock lever that engages with a door of a panel containing a wiring sheath disconnector in conjunction with an external operation handle and is capable of locking the door; and a lock lever integrated with the wiring sheath disconnector. a release pin that is supported by a base plate and rotatably holds the lock lever; a release lever that is formed integrally with the release pin and is rotated by the release pin; and a pullback that biases the lock lever toward a locking position. and a leaf spring that holds the lock lever in the unlocked position when the lock lever is guided to the unlocked position in conjunction with the external operation handle, and the release lever rotates the release pin. an engaging portion that engages with the lock lever and allows the lock lever to rotate together when the release lever is engaged with the lock lever; 1. An external operation handle device for a wiring shear and disconnector, characterized in that a spring is pushed up to release the locked state between the leaf spring and the lock lever.