JP6429690B2 - Operation handle mechanism - Google Patents

Description

  The present invention relates to an operation handle mechanism for a circuit breaker for wiring for safely inserting and removing a functional unit in a control center.

  In JEM-1195 (JEM: Japan Electrical Manufacturers' Association Standard), the function unit of the control center is a circuit configuration unit of a motor control center provided with main circuit and auxiliary circuit devices necessary for performing a predetermined function. It is prescribed. In this functional unit, a circuit breaker for wiring is usually mounted for the purpose of safely cutting off the current during a short circuit. This wiring breaker is provided with an operation handle having a unit interlock function for preventing the functional unit from being taken in and out when the wiring breaker is ON.

  13 to 15 show a conventional operation handle described in Patent Document 1 (Japanese Patent Laid-Open No. 61-26407). Patent Document 1 discloses the following.

  When the operation handle of the operation handle is rotated, the cam rotates in conjunction with it, and the rotary motion is converted into a linear motion by the cam and the link, whereby the knob of the circuit breaker for wiring can be operated. At the same time, the rotational motion of the cam is converted into a linear motion by another link, the interlock rod moves up and down, and a unit interlock mechanism is formed by contacting or engaging with the partitioning partition plate.

  For example, even if the functional unit wiring breaker is in the ON state accidentally and you try to store the functional unit in the control center, the interlock rod of the operation handle protrudes, so the partition rod between the interlock rod and the control center Can abut and prevent storage of the functional unit. Conversely, even if the functional unit's wiring circuit breaker is in the ON state and the functional unit is pulled out of the control center, the hole provided in the partition partition plate and the interlock rod of the operation handle are engaged. The unit can be prevented from being pulled out.

JP 61-26407 A

  The conventional operation handle forms a unit interlock mechanism by using an operation stroke from the ON position to the OFF position of the circuit breaker knob for wiring to project the interlock rod. In order to obtain a predetermined amount of protrusion of the interlock rod, it is necessary to design the cam and link of the operation handle in accordance with the operation stroke of the circuit breaker knob for wiring. Therefore, if the operation stroke of the circuit breaker knob for wiring is changed, the cam and link must be redesigned accordingly. In addition, it is necessary to design the cam and link of the operation handle each time depending on the mounting direction of the circuit breaker and the protruding direction of the interlock rod.

An operation handle mechanism according to the present invention is an operation handle mechanism that opens and closes an opening / closing operation knob of a circuit breaker by an operation handle installed so as to be exposed from a control center casing. A rotating cam that rotates in conjunction with each other, linked to each of the rotating cam and the opening / closing operation knob, reciprocates according to the rotation of the rotating cam by the operation handle, and closes or opens the opening / closing operation knob. A reciprocating link that is displaced to any one of the positions, and one support end is attached to the rotating cam, and the other free end abuts or engages with an engaging portion provided in the control center casing. mounted in the direction of, including an interlock rod disengaging said reciprocates in response to rotation of the rotating cam and the engaging portion, wherein the reciprocating link, the open-close An engagement recess that engages with the free end of the operating knob, and a mechanism that reciprocates the reciprocating link by sliding an engaging pin erected on the rotating cam when the rotating cam rotates. And a pair of side grooves that linearly reciprocate the reciprocating link by guidance of each rail portion of the mounting bracket provided in the circuit breaker, and the circuit breaker is in a closed position of the opening / closing operation knob. When the interlock rod is brought into contact with or engaged with the engagement portion, the removal from the control center casing is prevented.

  According to the circuit breaker of the present invention, the interlock rod and the reciprocating link are attached to the rotating cam that rotates in conjunction with the rotation of the operation handle, and the protruding amount of the interlock rod is further determined by the rotation of the operation handle. Because the structure depends only on the angle, the rotating cam and reciprocating link are not redesigned or redesigned regardless of the mounting direction of the circuit breaker, the protruding direction of the interlock rod, and the operating stroke of the open / close operation knob. An operation handle having the same structure can be used.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure of the operation handle when the circuit breaker for wiring in Embodiment 1 of this invention is OFF, (a) is a front view, (b) is the cross section which looked at the AA line of Fig. (A) in the arrow direction. FIG. It is a figure of the operation handle when the circuit breaker for wiring in Embodiment 1 of this invention is ON, (a) is a front view, (b) is the cross section which looked at CC line of Fig. (A) in the arrow direction. FIG. It is sectional drawing which looked at the BB line of FIG.1 (b) in the arrow direction. It is sectional drawing which looked at the DD line | wire of FIG.2 (b) in the arrow direction. FIG. 6 is a diagram of an operation handle when the circuit breaker for wiring in Embodiment 2 of the present invention is OFF, (a) is a front view, and (b) is a cross section of the line EE in FIG. FIG. It is a figure of the operation handle when the circuit breaker for wiring in Embodiment 2 of this invention is ON, (a) is a front view, (b) is the cross section which looked at the GG line of Fig. (A) in the arrow direction. FIG. It is sectional drawing which looked at the FF line | wire of FIG.5 (b) in the arrow direction. It is sectional drawing which looked at the HH line | wire of FIG.6 (b) in the arrow direction. It is a figure of the operation handle when the circuit breaker for wiring in Embodiment 3 of this invention is OFF, (a) is a front view, (b) is the cross section which looked at the JJ line | wire of FIG. FIG. It is a figure of an operation handle when the circuit breaker for wiring in Embodiment 3 of this invention is ON, (a) is a front view, (b) is the cross section which looked at the LL line | wire of FIG. FIG. It is sectional drawing which looked at the KK line | wire of FIG.9 (b) in the arrow direction. It is sectional drawing which looked at the MM line | wire of FIG.10 (b) in the arrow direction. It is a front view (FIG. 6 of patent document 1) of a prior art example. It is a side view (FIG. 7 of patent document 1) of a prior art example. It is the disassembled perspective view which simplified and showed the prior art example (FIG. 8 of patent document 1).

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In addition, the same code | symbol shows the same or an equivalent part between each figure (FIG. 1-12).

Embodiment 1 FIG.
The circuit breaker in Embodiment 1 is an example in which the circuit breaker is arranged vertically and the interlock rod is protruded in the vertical direction.
Hereinafter, the operation handle mechanism of the circuit breaker for wiring according to the first embodiment will be described with reference to FIGS.

The circuit breaker in Embodiment 1 is housed so as to be able to be inserted into and removed from the control center. The operation handle mechanism is installed so as to be exposed from the door when the control center door is closed. , Operation panel 1, operation handle 2, cam shaft 3, rotating cam 4, reciprocating link 5, first mounting bracket 6, second mounting bracket 7, interlock rods 8, 9 and wiring breaker 10 The circuit breaker is composed of an open / close operation knob 10a.
Next, the configuration, role, and operation of each part will be described.

  In general, the operation handle 2 is often designed to be in the ON position when rotated 90 ° from the OFF position regardless of the rating and type of the circuit breaker for wiring and the operation stroke of the knob. In the first embodiment, since the protrusion amount of the interlock rod depends only on the rotation angle of the operation handle 2, an interlock rod 8, which will be described later, is provided on the rotating cam 4 that rotates in conjunction with the rotation of the operation handle 2. , 9 is attached.

The rotating cam 4 is connected to the operation handle 2 via the cam shaft 3 and rotates in conjunction with the opening or closing operation of the operation handle 2, and operates the opening / closing operation knob 10a via the reciprocating link 5 described below. The circuit breaker 10 for wiring is opened and closed.
The reciprocating link 5 is linked to each of the rotating cam 4 and the opening / closing operation knob 10a, and reciprocates as will be described later in accordance with the rotation of the rotating cam 4 to close or open the opening / closing operation knob 10a. Displace to position.

The reciprocating link 5 is guided by the rail portions 7a of the pair of second mounting brackets 7 so that the engaging recess 5a is engaged with the opening / closing operation knob 10a and linearly moves in accordance with the operation stroke of the opening / closing operation knob 10a. ing. The mechanism for guiding the reciprocating link 5 is constituted by a pair of rail portions 7a of the second mounting bracket 7 and a pair of side grooves 5b of the reciprocating link 5 loosely fitted on both rail portions.
The reciprocating link 5 engaged with the opening / closing operation knob 10 a is also engaged with the rotating cam 4 so as to linearly move in accordance with the rotation of the rotating cam 4.
The engaging mechanism includes an engaging groove 5c provided in the reciprocating link 5 and an engaging pin 4a which is erected on the rotating cam 4 and slides on the engaging groove 5c when the rotating cam 4 rotates. It is configured.

The second mounting bracket 7 is fixed to the wiring breaker 10 and holds the first mounting bracket 6.
The operation panel 1 holding the operation handle 2 covers the circuit breaker 10 for wiring and is held by the first mounting bracket 6. The operation panel 1 and the operation handle 2 are housed in a control center (not shown) so that the operation handle 2 can be operated from outside the control center. When the door 11 is closed, the operation panel 1 and the operation handle 2 are exposed outside the control center. Is done.

  Accordingly, when the operating handle 2 is rotated by 90 °, the rotating cam 4 is rotated via the cam shaft 3, and the rotating cam 4 is rotated to reciprocate the reciprocating link 5 to close or open the opening / closing operation knob 10a. Displace to one of the positions.

Next, the interlock rod 8 and the interlock rod 9 will be described. The interlock rod 8 and the interlock rod 9 are attached to the rotating cam 4 and operate in conjunction with the rotation of the rotating cam 4.
That is, in the interlock rod 8 and the interlock rod 9, one support end is attached to the rotating cam 4, and the other free end is in contact with or engaged with the engagement portions 8a and 9a of the control center. , And reciprocates according to the rotation of the rotating cam 4 and engages and disengages with the engaging portions 8a and 9a.

Hereinafter, the operation of the interlock rod 8 and the interlock rod 9 will be described.
When the circuit breaker 10 for wiring is OFF, the mounting position which is one support end of the rotating cam 4, the interlock rod 8 and the interlock rod 9 is the support points 14a and 15a, respectively, as shown in FIG. is there.
When the operating handle 2 is rotated from the OFF position to the ON position, the rotating cam 4 also rotates in conjunction with the cam shaft 3, and therefore the rotating cam 4 and the interlock rod 8 when the wiring breaker 10 is ON. And the attachment position of the interlock rod 9 becomes the support points 14b and 15b, as shown in FIG. Naturally, the other free end portion of the interlock rod 8 and the interlock rod 9 is raised or lowered by the phase difference of the support point, which becomes the stroke of the interlock rod.

  The lengths of the interlock rod 8 and the interlock rod 9 are such that the partition partition plate 12 and the partition partition plate 13 are only in the state where the circuit breaker 10 is ON (when the opening / closing operation knob 10a is displaced to the closed position). It is designed to abut or engage with the engaging portions 8a, 9a. The engaging portions 8a and 9a are configured by engaging recesses or engaging holes. In addition, as described above, the interlock rods 8 and 9 are composed of a pair of rods protruding in two directions that are perpendicular to and opposite to the engaging portions 8a and 9a. 9a is provided with a guide (not shown) for preventing shaking.

  As described above, the components operate in conjunction with each other by manually rotating the operation handle 2, and the state of the operation handle when the circuit breaker 10 for wiring is OFF is as shown in FIGS. The state when ON is shown in FIG. 2 and FIG. As shown in the figure, the interlock rod 8 and the interlock rod 9 are engaged with the engaging portions 8a and 9a of the partition partition plate 12 and the partition partition plate 13 only when the circuit breaker 10 is ON, It can be seen that the function unit is prevented from being pulled out and forms a unit interlock mechanism.

As described above, in the first embodiment, the interlock rod 8 and the interlock rod 9 are directly attached to the rotating cam 4 so that the operation of the interlock rod depends only on the rotation of the operation handle 2 and the opening / closing operation knob. Unaffected by the operating stroke of 10a.
Since the conventional operation handle has a structure in which the interlock rod operates in conjunction with the operation stroke of the opening / closing operation knob 10a, the structure of the operation handle needs to be changed by changing the operation stroke of the opening / closing operation knob 10a. In 1, it is no longer necessary. In addition, although Embodiment 1 is an example in the case of rotating the rotating cam 4 clockwise as shown in FIGS. 3 and 4, the rotating cam is counteracted by changing the shape of the rotating cam. It is also possible to rotate it clockwise.
The interlock rods 8 and 9 are a combination of the rotating cam 4 and the interlock rods 8 and 9 regardless of the mounting direction of the circuit breaker 10, the protruding direction of the interlock rod, and the operation stroke of the opening / closing operation knob 10 a. The structure is the same structure.

Embodiment 2. FIG.
The second embodiment is an example where the circuit breaker for wiring is arranged vertically and the interlock rod protrudes in the left-right direction.
The operation handle mechanism of the circuit breaker according to the second embodiment will be described below with reference to FIGS. Note that the description of the same parts as those in Embodiment 1 is omitted.

  The role and operation of each component are the same as in the first embodiment. However, when the circuit breaker 10 for wiring is ON as shown in FIGS. 6 and 8, the partition partition plates 12 and the partition partition plates 13 arranged on the left and right sides. In order to engage the interlock rod 8 and the interlock rod 9, the support points (attachment points) of the rotating cam 4, the interlock rod 8 and the interlock rod 9 are different from those of the first embodiment.

  When the circuit breaker 10 for wiring is OFF, the support points of the rotating cam 4, the interlock rod 8 and the interlock rod 9 are 14a and 15a, respectively, as shown in FIG. The support points at this time are 14b and 15b as shown in FIG. It can be seen that, unlike the first embodiment, in the second embodiment, a unit interlock mechanism is formed by operating the interlock rod 8 and the interlock rod 9 using the phase difference in the left-right direction. As shown in FIGS. 7 and 8, the rotational direction of the rotating cam 4 is also clockwise as in the first embodiment. However, the rotating cam 4 is also changed by changing the shape of the rotating cam. It is also possible to rotate counterclockwise.

Embodiment 3 FIG.
The third embodiment is an example in which the circuit breaker for wiring is arranged vertically and the interlock rod protrudes only upward.
The operation handle mechanism of the circuit breaker for wiring according to the third embodiment will be described below with reference to FIGS. Note that the description of the same parts as those in Embodiment 1 is omitted.

  The configuration is the same as in the first embodiment, and the difference from the first embodiment is the shape of the rotating cam 4. In Embodiment 1, it is a circle, whereas in Embodiment 3, it is a rectangle.

  Although the role and operation of each component are the same as in the first embodiment, as shown in FIGS. 9 to 12, the interlock rod 8 protrudes only in the upward direction, so compared with the first embodiment, The number of components is reduced and it is more economical. Of course, the protruding direction of the interlock rod can be freely changed by changing the shape of the rotating cam.

  In the present invention, each embodiment can be appropriately modified or omitted within the scope of the invention.

1: operation panel, 2: operation handle, 3: camshaft (cam),
4: rotating cam, 4a: engaging pin, 5: reciprocating link, 5a: engaging recess,
5b: side groove, 5c: engagement groove, 6: first mounting bracket,
7: Second mounting bracket, 7a: Rail portion, 8: Interlock rod,
8a: engagement portion (engagement recess or engagement hole), 9: interlock rod,
9a: engagement portion (engagement recess or engagement hole), 10: circuit breaker for wiring,
10a: opening and closing operation knob, 11: door, 12: Subdivision Etsukamatsu cutting plate,
13: Subdivision Etsukamatsu cutting plate,
14a: Support points of the cam 4 and the interlock rod 8 when the circuit breaker for wiring is OFF,
14b: Support points of the cam 4 and the interlock rod 8 when the circuit breaker for wiring is ON,
15a: Support points of the cam 4 and the interlock rod 9 when the circuit breaker for wiring is OFF,
15b: Support point of the cam 4 and the interlock rod 9 when the circuit breaker for wiring is ON

Claims (2)

An operation handle mechanism that opens and closes an opening / closing operation knob of a circuit breaker by an operation handle installed so as to be exposed from a control center casing, and is a rotating cam that rotates in conjunction with opening or closing operation of the operation handle. The reciprocating mechanism is linked to each of the rotating cam and the opening / closing operation knob, and reciprocates according to the rotation of the rotating cam by the operation handle to displace the opening / closing operation knob to a closed or open position. The moving link and one supporting end are attached to the rotating cam, and the other free end is attached in a direction to contact or engage with an engaging portion provided in the control center casing, and the rotating comprising an interlock rod disengaging and reciprocates and the engagement portion in response to rotation of the cam, said reciprocating link engaging recess to be engaged with the free end portion of the opening and closing operation knob Each of an engaging groove for reciprocating the reciprocating link by sliding an engaging pin erected on the rotating cam when the rotating cam rotates, and a mounting bracket provided on the circuit breaker. A pair of side grooves that linearly reciprocate the reciprocating link by guidance by a rail portion, and the breaker is configured to disengage the interlock rod from the engaging portion when the open / close operation knob is displaced to the closed position. The operation handle mechanism is prevented from being removed from the control center casing by abutting or engaging with the control center casing. The interlock rod is composed of a pair of rods protruding in the horizontal or vertical direction and in opposite directions toward the engaging portion of the control center casing, or a single rod protruding only in one direction. The operation handle mechanism according to claim 1.