JP2604000B2 - Handle operation device for wiring and breaker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Industrial application field) The present invention relates to a wiring board provided inside a switchboard such as a control center or a wiring board for operating a handle of a breaker. The present invention relates to a handle operating device for a breaker.

(Prior Art) In this type of handle operation device, when the switch is turned to open the switchboard door in a state where the wiring is turned off or the breaker is turned off, the turn of the knob is restricted. When the door is closed, the handle can be turned without restriction and the wiring and breaker can be turned on and the door closed when the door is closed. It is configured to lock in position. An example of this kind of handle operating device is described in Japanese Utility Model Application No. 57-103805, which is shown in FIGS. 11 to 14.

In the handle operating device shown in FIG. 11, a knob 2 is provided on the front side of the base 1 so as to be rotatable in the directions indicated by arrows A and A, and is supported by a support shaft 3 on the back side of the base 1 so that the knob 2 A driving member 4 that swings with the rotation is provided. And
By turning the knob 2, the driving member 4 is swung, and a handle for a wiring or breaker (not shown) inserted in the butterfly hole 5 is moved to turn off the wiring or breaker.・
ON operation. An engaging member 7 is provided on the back side of the base 1 via a support shaft 6 so as to be rotatable. A protruding portion 7a protruding from the base 1 is formed at one end of the engaging member 7 and at the other end. A claw 7b is formed to be locked in the locking groove 8 of the knob 2. A sliding contact portion 9 is formed outside the locking groove 8 of the knob 2, and when the knob 2 rotates in the direction opposite to the arrow A, the sliding contact portion 9 becomes an arc portion 7 c near the center of the engaging member 7. , The engagement member 7 rotates in the direction of arrow B. The engaging member 7 is constantly urged in the direction indicated by the arrow B by the elastic force of the torsion coil spring 10.

Thus, in FIG. 12A in which the knob 2 is turned to the off position in the direction of the arrow A, the sliding contact portion 9 comes into contact with the arc portion 7c of the engaging member 7, and the engaging member 7 is moved. The projection 7a of the engagement member 7 is rotated upward in the direction of arrow B, and moves upward. In this state, as shown in FIG. 12 (b), even if the door 11 is closed, the interlock piece 12 does not engage with the protrusion 7a of the engaging member 7, so that the door 11 can be freely opened and closed.

Next, when the knob 2 is turned in the direction of the arrow A in the direction of the ON position in a state where the wiring and the breaker are off and the door 11 is closed, as shown in FIG. 7 is rotated in the direction opposite to the arrow B by the elastic force of the torsion coil spring 10, and the protruding portion 7 a of the engaging member 7 engages with the interlock piece 12 of the door 11 as shown in FIG. . As a result, the engaging member 7 is prevented from rotating further, so that the claw 7b of the engaging member 7 does not engage with the locking groove 8 of the knob 2. Therefore, the knob 2 can rotate to the ON position, and the door
11 is locked so that it cannot be opened.

When the knob 2 is turned in the direction opposite to the arrow A from the off position to the on position in the state where the door 11 is opened, the engaging member 7 is turned in the direction of arrow B by the elastic force of the torsion coil spring 10, The claw 7b of the engaging member 7 is engaged with the locking groove 8 of the knob 2.
The knob 2 is not rotated in the ON position direction (see FIGS. 14 (a) and 14 (b)).

(Problems to be Solved by the Invention) However, in the above-described conventional configuration, the door 11 can be freely opened and closed when the wiring and the breaker are off.

On the other hand, from the viewpoint of enhancing safety, the door 11 cannot be opened when the wiring and the breaker are off, and after operationally confirming that the wiring and the breaker are off, the door 11 is turned off. There is a demand for a so-called double safety structure in which the opening operation is performed, but the above-mentioned conventional structure cannot satisfy the demand.

Therefore, an object of the present invention is to provide a wiring device and a handle operating device for a circuit breaker which can open a door after operationally confirming that the wiring and the breaker are turned off with a simple configuration. .

[Structure of the Invention] (Means for Solving the Problems) The handle operating device for wiring and breaker of the present invention comprises a base provided in a switchboard such as a control center, and a turning operation performed on the base. A knob provided so as to be able to be provided, a driving member which is provided on the base so as to rotate in conjunction with the driving member, and which is rotated by the knob to operate a handle for wiring or a breaker; In the open state of the door of the switchboard, which is rotatably provided on the base,
The turning of the knob in the direction of turning on the wiring or the breaker from the off position is prevented by engaging the locking portion, and in the closed state of the door, the interlock piece provided on the door is The engagement allows rotation of the knob in a direction to turn on the wiring and breaker and locks the door so that it cannot be opened, and the knob locks the wiring and breaker from the off position. An engagement member which, when rotated to a predetermined position in a direction opposite to the ON direction, moves to a position where the interlock piece cannot be engaged and allows the door to be opened, the base and the drive member When the knob is rotated from the off position to a predetermined position in a direction opposite to a direction in which the wiring or breaker is turned on, the gripping member locks the driving member and In a position where it cannot be engaged with the interlocking piece. Characterized in structure in which a holding mechanism.

(Operation) In the handle operating device for a wiring and breaker according to the present invention, when the knob is set to the off position in the closed state of the door, the wiring and the breaker are turned off. In this state, the engagement member is engaged with the interlock piece, and the door cannot be opened.
Then, when the knob is turned to a predetermined position in the direction opposite to the direction in which the knob is turned on, the engagement member releases the engagement with the interlock piece, and the door can be opened. At this time, the holding mechanism acts between the base and the driving member to restrain the driving member at that position, so that the door can be freely opened and closed.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 8.

First, in FIG. 8, 21 is a control center as a switchboard, 22 is a door of a unit room 21a of the control center 21, and 23 is a unit device. The unit device 23 is the fourth
It has a wiring bar and a breaker 24 as shown in the figure, and is equipped with a handle operation device 25 for operating the wiring bar and the breaker 24.

Next, in FIGS. 1, 3 and 4, reference numeral 26 denotes a base of a handle operating device 25, in which a stepped cylindrical portion 27 is formed in the center, and a side wall 26a of the base 26 is formed. Has a long hole 28 formed therein. Reference numeral 29 denotes a knob provided with a pin 29b protruding at an eccentric position on the back surface of the stepped disk portion 29a, which is rotatably supported by the base 26 by fitting the disk portion 29a to the cylindrical portion 27. . A long groove 29c is formed on the outer periphery of the disk portion 29a of the knob 29.
Are formed, and a small hole 27a is formed in the cylindrical portion 27.
0 is inserted into the long groove 29c of the disc portion 29a, so that the knob 2
9 and prevent the knob 29 from rotating
From the "ON" position shown in the figure, through "TRIP" and "OFF" to "R
It is restricted to the range up to the "ESET" position. Reference numeral 31 denotes a locking portion formed on the knob 29, which is formed by cutting out a part of the outer periphery of the tip portion of the disk portion 29a of the knob 29 that protrudes into the base 26 in a substantially U-shape. . Reference numeral 32 denotes a substantially U-shaped drive member composed of two long and short pieces. A shaft support hole 33 is formed at one end portion of the long side of the drive member which is bent in a substantially L-shape. It is rotatably inserted and supported by a support shaft 34 attached to the back side of the table 26. A long hole 35 is formed on the short side of the driving member 32, and a butterfly hole 36 is formed on the long side, and the protruding piece 32a is integrally formed. The pin 29b of the knob 29 is inserted into the long hole 35, and the pin 29b is stopped by the stop ring 37.
When the pin 29b is inserted into the pin 35, the driving member 32 rotates about the support shaft 34 in conjunction with the rotation of the knob 29. The handle 24a of the wiring bar and the breaker 24 is inserted into the butterfly hole 36 of the drive member 32, and the handle 24a is operated by the rotation of the drive member 32. . Reference numeral 38 denotes a support shaft different from the support shaft 34, which is rotatably provided on the cylindrical portion 27 so as to protrude to the rear side of the base 26. A groove 38a is formed in the front end surface of the support shaft 38, and the support shaft 38 can be rotated by inserting a tool such as a driver into the groove 38a. Reference numeral 39 denotes an engagement member fixed to the tip of the support shaft 38,
One end of this protrudes outward from the long hole 28 of the base 26. A bent piece 39a is formed at an intermediate portion of the engaging member 39 to be in contact with the protruding piece 32a of the driving member 32. Are formed integrally. Numeral 40 denotes a torsion coil spring inserted into the support shaft 38, which urges the engagement member 39 to rotate in the direction of arrow C. On the other hand, in FIG. 8, reference numeral 41 denotes an interlock piece protruding from the door 22, and a hooking claw 41a protrudes from the tip of the interlock piece. This interlock piece 41 is the same as the conventional interlock piece 12 shown in FIG. 12 and FIG. A nail 42 is screwed on the engaging claw 41a of the interlocking piece 41, and the upper end of the claw 42 protrudes higher than the upper end of the engaging claw 41a. Reference numeral 43 denotes a friction plate made of an elastic member such as a leaf spring and attached to the long side of the drive member 32 with a screw 43a and having a curved portion 43b at the tip. Reference numeral 44 denotes a holding member, which is made of an elastic member such as a leaf spring, and is formed at one end of the holding portion 44a.
Is attached to the base 26 with screws 44b, and an elastic contact portion 44c corresponding to the friction plate 43 is formed at the other end. Further, a holding mechanism unit 45 is constituted by the friction plate 43 and the holding member 44. Reference numeral 46 denotes a projecting piece formed by bending the tip of the holding member 44, and the tip of the projection is engaged with and disengaged from an engaging groove 47 formed in the engaging member 39 in accordance with the elastic deformation of the holding member 44. It is configured to be possible.

In the above configuration, when the wiring and breaker 24 are off (the knob 29 is in the "OFF" position shown in FIG. 3) and the door 22 of the unit chamber 21a is open, FIG. And as shown in FIG. 5, the engagement member 39 is a torsion coil spring.
It is rotated in the direction of arrow C by the spring force of 40, and the bent piece 39a
Is in contact with the protruding piece 32a of the driving member 32. In this state, since the engaging member 39 does not further rotate in the direction of arrow C, the claw portion 39b is disengaged from the locking portion 31 of the knob 29, and the knob 29 is indicated by an arrow D in FIGS. Indicate "O"
It is in a state where it can be rotated in the "N" position direction.

When the knob 29 is turned in the direction of arrow D from the state shown in FIGS. 1 and 5 toward the “ON” position (on position), the driving member 32 also moves in the same direction in conjunction with the turning of the knob 29. The engagement member 39 is rotated in the direction of arrow C so as to follow the rotation of the drive member 32 by the spring force of the torsion coil spring 40. Then, the rotation of the engagement member 39 causes the fifth
As shown by the two-dot chain line in the figure, the claw portion 39b enters the engaging portion 31 of the knob 29 being rotated in the direction of arrow D and is engaged, so that the knob 29 is further moved in the direction of arrow D. Cannot rotate. When the knob 29 is rotated in the direction of arrow D from the “OFF” position (off position), the engaging member
Since 39 is in a state of preventing the rotation of the knob 29, the knob is eventually turned
29 cannot be turned to the "ON" position and therefore the door
When the wiring 22 is open, the wiring and the breaker 24 cannot be turned on from the off state.

When the door 22 of the unit chamber 21a is closed with the wiring strips and the breaker 24 shown in FIG. 5 closed, the claw 42 of the interlocking piece 41 of the door 22 Abuts,
This engaging member 39 passes while rotating in the direction indicated by the arrow C. When the claw piece 42 passes through the engagement member 39, the engagement member
39 is rotated in the direction of arrow C by the spring force of the torsion coil spring 40, and one end of the engaging member 39 moves upward from the engaging claw 41a of the interlock piece 41 as shown by a two-dot chain line in FIG. The upper part of the protruding claw piece 42 is engaged, and the door 22 is locked so that it cannot be opened. In this state, turn knob 29 from the “OFF” position to “O
When the rotation operation is performed in the direction of arrow D toward the “N” position, the driving member 32 rotates in the same direction, and the engagement member 39 rotates in the direction of arrow C by the spring force of the torsion coil spring 40. The rotation of the engagement member 39 in the direction of arrow C is stopped immediately when one end of the engagement member 39 comes into contact with the interlock piece 41, so that the claw 39 b of the engagement member 39 is Even if it did not invade, as shown by the solid line in FIG.
From the state. Then, when the knob 29 is further turned in the direction of arrow D and set to the "ON" position, the wiring and the breaker 24 are set to the ON state. In this state, the engaging member 39 is engaged with the claw piece 42 (the engaging claw) of the interlock piece 41.
Due to the engagement in 41a), the door 22 is locked in a closed state and cannot be opened.

When the knob 29 is returned from the "ON" position to the "OFF" position, the wiring and the breaker 24 are turned off. However, in this state, the door 22 cannot be opened because the engaging member 39 is engaged with the upper portion of the claw piece 42. Then, the user rotates the knob 29 from the “OFF” position to a predetermined position, that is, the “RESET” position in the direction opposite to the arrow D opposite to the “ON” position. Then, the driving member 32 is rotated in the direction opposite to the arrow D, whereby the engaging member 39 is rotated in the direction opposite to the arrow C against the spring force of the torsion coil spring 40, as shown in FIG. The one end moves to the disengageable position where the engagement with the claw piece 42 is released. Then, when the door 22 is pulled toward the user, the door 22 is opened.
Therefore, the user performs an operation for opening the door 22 after confirming that the wiring and the breaker 24 are turned off, thereby improving safety.

Note that, as in the present embodiment, the engaging claw of the interlock piece 41 is used.
If the claw piece 42 is attached to the 41a, simply attach the claw piece 42 to the existing interlock piece, confirm that the wiring and breaker are off, and then open the door Can be changed to a model.

Now, as described above, to open the door 22, pull the knob 29 "RESE
When rotated to the "T" position, the tip of the friction plate 43 of the holding mechanism 45 attached to the drive member 32 is moved to the position shown in FIG.
By slidingly contacting the elastic contact portion 44c of the holding member 44, the holding member 44 is elastically deformed, and the projection 46 is engaged with the engaging groove 47 of the engaging member 39. As a result, a frictional force is generated between the elastic contact portion 44c and the friction plate 43, and the rotation of the drive member 32 is restricted by the frictional force. Therefore, in a state where the knob 29 is rotated to the “RESET” position, a toggle spring (not shown) in the wiring or the breaker 24 returns the knob 29 to the “OFF” position via the handle 24a and the driving member 32. Even if there is a situation that exerts spring force,
The knob 29 is kept at the "RESET" position. Therefore, the engaging member 39 is held at the non-engageable position as it is,
22 can be freely opened and closed, which is convenient for maintenance and inspection.

From the state shown in FIG. 2, the knob 29 is moved from the “RESET” position to “O”.
When the rotary operation is performed in the direction of arrow D toward the “FF” position, the friction plate
Since the tip of 43 is separated from the elastic contact portion 44c of the holding member 44,
The restrained state of the driving member 32 is released, and the knob 29 is turned “OFF”.
It is restored to the position. On the other hand, the distal end of the protruding piece 46 is pulled out of the engaging groove 47 of the engaging member 39 by the elastic restoration of the holding member 44.
It is rotated in the direction of arrow C by the spring force of 40, and one end thereof abuts on the interlocking piece 41 to lock the door 22 in the closed state.

9 and 10 show another embodiment of the present invention. The difference from the above embodiment is that instead of the holding member 44, a U-shaped support plate 48 is fixed to the base 29, A holding rod 49 is movably supported between the upper and lower end plates 48a and 48b of the support plate 48, and the holding rod 49 is compressed by a compression coil spring 50 provided in the support plate 48.
In the direction of arrow E. Further, the holding mechanism portion 51 is constituted by the support plate 48, the holding rod 49, the compression coil spring 50, and the friction plate 43. The effect is
When the knob 29 is rotated from the "OFF" position to the predetermined position, i.e., the "RESET" position in the direction opposite to the arrow D, opposite to the "ON" position, the drive member 32 rotates in the direction opposite to the arrow D as described above. Then, the engaging member 39 moves to the non-engageable position where the engagement with the claw piece 42 is released. Then, as shown in Fig. 10, the friction plate
The distal end of 43 presses the distal end of the holding rod 49, and the lower end of the holding rod 49 projects below the support plate 48 against the elastic force of the compression coil spring 50 to engage the engaging member 39. The groove 47 is engaged.
Then, the rotation of the drive member 32 is restricted by the frictional force between the holding rod 49 and the friction plate 43, and the knob 29 is held at the “RESET” position.

Therefore, this embodiment also has the same effects as the above embodiment.

[Effect of the Invention] The handle operating device of the present invention for wiring and breaker locks the door so that it cannot be opened, not only when the knob is in the on position but also in the off position in the closed state of the door, When the knob is turned from the off position to a predetermined position in a direction opposite to a direction in which the wiring or breaker is turned on, the engaging member releases the engagement with the interlock piece, and the door is opened. Since it becomes possible, the user performs an operation of opening the door after operationally confirming that the wiring and the breaker are off, thereby improving safety. Moreover, when the operation of opening the door is performed,
Until the knob is rotated in the ON position direction, the engaging member is held in a state in which the engagement with the interlock piece is released by the holding mechanism. It can be freely opened and closed for convenience.

[Brief description of the drawings]

1 to 8 show an embodiment of the present invention. FIG. 1 is a perspective view showing a handle operation device viewed from the back side, FIG. 2 is a diagram corresponding to FIG. 1 in a state where a door is opened, FIG. Fig. 3 is a perspective view showing the handle operating device as viewed from the front side, Fig. 4 is an exploded perspective view showing the same with wiring and a breaker, and Fig. 5 is a knob in an "OFF" position with a door opened. A schematic back view of the main part at the time, Fig. 6 shows the knob "ON" with the door closed
FIG. 5 is a diagram corresponding to FIG. 5 when operated to the position, FIGS. 7 (a) and (b) are schematic rear and side views of a main part when the door is opened, and FIG. 8 is a perspective view of the control center. It is.
9 and 10 are diagrams corresponding to FIGS. 1 and 2 showing another embodiment of the present invention. FIG. 11 is a diagram corresponding to FIG. 1 showing a conventional handle operating device. a), (b) and thirteenth
FIGS. 7A and 7B are diagrams corresponding to FIGS. 7A and 7B when the knob is in an "OFF" position and an "ON" position with the door closed, respectively, and FIG. FIGS. 7A and 7B are diagrams corresponding to FIGS. 7A and 7B when the door is opened. In the figure, 21 is a control center (distribution panel), 22 is a door, 24
Is a wiring and breaker, 24a is a handle, 25 is a handle operation device, 26 is a base, 29 is a knob, 31 is a locking portion, 32 is a driving member, 39 is an engaging member, 41 is an interlock piece, 42 is a nail piece,
Reference numerals 45 and 51 denote holding mechanisms.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tatsuro Oda 2121, Nao, Asahi-cho, Mie-gun, Mie Prefecture Inside Mie Plant, Toshiba Corporation (56) References JP-A-63-87107 (JP, A) 61-56750 (JP, U) Actually open Showa 64-6706 (JP, U)

Claims (1)

(57) [Claims] A base provided in a switchboard such as a control center; a knob rotatably provided on the base; and a knob rotatably provided on the base and rotated by the knob. A driving member for operating a handle of a wiring or a breaker, a locking portion formed on the knob, and opening of a door of the switchboard provided on the base so as to rotate in conjunction with the driving member. In the state, the turning of the knob in the direction of turning on the wiring and the breaker from the off position is prevented by engaging the locking portion, and in the closed state of the door, an interface provided on the door is provided. By engaging the lock piece, the knob is allowed to rotate in a direction to turn on the wiring and the breaker, and the door is locked so as not to be opened, and the knob is locked from the off position. To a predetermined position in the direction opposite to the direction in which the breaker is turned on When moved, the interlocking piece moves to a position where it cannot be engaged with the interlocking piece, and an engaging member that allows the door to be opened, acts between the base and the driving member, and the knob is moved from the off position. When rotated to a predetermined position in a direction opposite to a direction in which the wiring or breaker is turned on, the drive member is restrained to hold the engagement member at a position where the interlock piece cannot be engaged. A handle operating device for a wiring ladder or a breaker comprising a holding mechanism.