JP2008091300A - External operation handle device of switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an external operation handle device of a switch which is provided an off locking prevention function when a main contact point is welded and in which both of a on/off-locking and an off-locking can be done by one kind. <P>SOLUTION: A locking member 14 is provided on an operation handle 11 and can be pulled out, and a locking position setting means 21 in which a relative angle position around an axial center of a rotating axis 11a of the operation handle as a center can be changed with respect to the operation handle and which locks with the locking member 14 when the relative angle position is in a predetermined position and can prevent a rotation of the operation handle. The operation handle 11 and the locking position setting means 21 are composed so that a relative angle position with the switch 102 around the axial center of the rotating axis 11a as a center can be changed in accordance with a setting direction of the switch on the housing. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an external operation handle device for a switch for operating a switch such as a circuit breaker or a leakage breaker incorporated in a control panel or the like from the outside of the front surface of the control panel or the like.

  Conventionally, when an electric circuit is opened and closed by a switch (hereinafter simply referred to as a switch) such as a circuit breaker for a wiring or an earth leakage circuit breaker, the circuit is opened (hereinafter referred to as OFF) or closed (hereinafter referred to as OFF). In order to hold the switch in the ON state), for example, a handle lock device or the like is attached to the tilting handle of the switch to lock the switch in the OFF position or the ON position, thereby restricting the operation of the switch. Are known. This can be achieved, for example, by restraining the switch at the OFF position to ensure the safety of inspection work on the load side circuit of the switch, or by restraining the switch at the ON position and supplying power so that important circuits are not turned off. Done to ensure.

  On the other hand, when the switch is installed on the control panel, etc., for the convenience of wiring, the switch is housed on the back side of the control panel, etc., and the flip handle of the switch is not exposed to the front of the control panel, etc. It may become. In such a configuration, an external operation handle device that can operate the internal switch from the outside of the front surface of the control panel or the like is added to the switch itself, and the external operation handle device is operated from the outside of the front surface of the control panel or the like. Configured to open and close the switch. Also, when the front of the control panel or the like is a door, an external operation handle device is provided on the door, and when the door is closed, the external operation handle device engages with the tilting handle of the switch. Configured to be able to.

  Of course, even when the external operation handle device is mounted on the switch as described above, it may be necessary to restrain the operation of the switch for the aforementioned purpose. Generally, an external operation handle device includes a rotatable handle portion that can be manually operated. Therefore, conventionally, a device has been proposed in which a lock plate is attached to the rotating handle portion, and the operation of the handle portion can be locked using the lock plate. The lock plate in this conventional apparatus is provided so as to be able to be inserted into and pulled out from the rotary handle part, and prevents the rotary handle part from rotating when pulled out from the rotary handle part, and An operation lock lock such as a padlock is attached to and locked with a lock hole provided in a portion where the lock plate is pulled out.

  By the way, if an overcurrent flows through a switch that is in an energized state, if the switch breaks down and does not trip, the main contact will be welded by the heat generated by the overcurrent energization and remain in the energized state. An abnormal situation may occur. At this time, if the rotary handle is turned in the OFF direction in an attempt to turn off the switch without knowing the welding of the main contact, the tilting handle of the switch will not stop falling in the OFF direction. Even if it is not obtained, it must be absolutely avoided that the rotary handle part reaches the OFF position. Therefore, as long as the main contact is equivalent to the ON state, it is configured so that it cannot be locked in the OFF position by pulling out the lock plate, preventing misrecognition due to the position of the rotary handle part, especially the load side inspection work It is necessary to ensure safety.

  Therefore, in the conventional external operation handle device for a switch, the rotary handle portion is divided into a connection shaft and an operation handle, and at the beginning of the rotation of the operation handle from the ON position to the OFF position, “play” is performed on the connection shaft. In addition, when the main contact is welded, the operation handle of the tripping spring of the switch does not exceed the dead point of the toggle link mechanism. In this case, since the connecting shaft does not follow, the lock plate cannot be pulled out (see, for example, Patent Document 1). According to this conventional apparatus, there is no risk of misidentifying a switch whose main contact is in an ON state as being in an OFF state.

JP 2002-25411 A (page 4, right column, line 43 to page 5, left column, line 14)

  When installing the switch in a control panel, etc., due to the layout of the power supply side conductor of the electrical circuit connected to the switch or the load side conductor in the control panel, for example, the power supply side terminal of the switch is In some cases, it is more convenient to direct the provided side (hereinafter referred to as the power supply side) to the power supply side conductor side of the electric circuit. In general, the indications printed or printed on the external operation handle device are provided when the power supply side is added to a switch with the power supply side facing upward. In the case of a clock hand, the position at 12 o'clock is ON, and from there, it rotates counterclockwise, and the position at 9 o'clock is OFF. For this reason, in the switch attached to the control panel or the like with the power supply side facing right (or left) due to the arrangement of the electric circuit, the above-mentioned display is difficult to see, and the operation from ON to OFF is from 12 o'clock. The position of the hour (9 to 6 o'clock in the case of left-facing installation), which is visible from the outside even if there is a degree of freedom in the direction of installation of the switch in the folding corner, control panel, etc. Obviously, if the direction of the handle portion is changed according to the installation direction of the switch, it is not preferable from the aesthetic point of view and the possibility of erroneous operation.

  Therefore, regardless of the direction in which the switch is installed, the rotating handle portion (connecting shaft) and the connecting plate are fixed on the manufacturer side so that the operating handle always faces the 12 o'clock direction at the ON position of the switch. May be configured to be changed at 90 degree intervals. However, in this case, it is necessary to prepare a handle base in which the position of the locking portion (reference 33b in Patent Document 1) for locking the pulled lock plate is changed, and according to the required specifications on the user side. Because it is assembled each time, there remains a concern of misassembly and shipping. Moreover, in addition to the OFF lock that locks the electric circuit in the OFF state, in the case of the ON / OFF lock that enables the ON lock that locks the electric circuit in the ON state, the types of handle bases further increase, and the external operation handle It was an obstacle to standardization.

  The present invention has been made to solve the above-described problems, and has a function of having an OFF lock preventing function at the time of main contact welding and providing both an ON lock and an OFF lock function, and a main contact. It is an object of the present invention to provide an external operation handle device for a switch that has a function of preventing an OFF lock at the time of welding and is capable of responding to any request for providing only an OFF lock function.

  An external operation handle device for a switch according to the present invention is an external operation handle device for a switch configured to perform an open / close operation of a switch installed in a housing such as a control panel from the outside of the housing, A handle engaging means that engages with a tilting handle of the switch that opens and closes contacts via a toggle link mechanism and moves in conjunction with the movement of the tilting handle, and is exposed to the outside of the casing. An operation handle that is connected to the handle engagement means and rotates about a rotation axis in conjunction with the movement of the handle engagement means, and is provided with respect to the axis of the rotation axis provided on the operation handle. A lock member configured to be movable in the vertical direction and a relative angular position centered on the axis of the rotation shaft with respect to the operation handle are variably provided, and the relative angular position is a predetermined position. When engaged with the locking member Lock position setting means capable of preventing rotation of the operation handle, wherein the operation handle and the lock position setting means have a relative angular position with respect to the switch about the axis of the rotation shaft. The switch can be changed in accordance with the mounting direction of the switch with respect to the casing.

  An external operation handle device for a switch according to the present invention includes a lock member provided on the operation handle and configured to be movable in a direction substantially perpendicular to the axis of a rotation shaft, and the rotation with respect to the operation handle. A lock position setting in which a relative angular position about the axis of the shaft is variably provided, and when the relative angular position is a predetermined position, the lock handle can be engaged to prevent the operation handle from rotating. The operation handle and the lock position setting means correspond to a mounting angle of the switch with respect to the casing relative to a relative angular position of the switch with respect to the axis of the rotation shaft. Therefore, it is possible to meet a plurality of required specifications on the user's side without replacing parts constituting the external operation handle device of the switch. Strike reduction is possible.

Embodiment 1 FIG.
1 is an exploded perspective view showing an external operation handle device of a switch according to Embodiment 1 of the present invention, and FIG. 2 is a partial sectional side view showing a state in which the external operation handle device is attached to the switch. FIGS. 3A and 3B are explanatory views showing the rotary handle portion of the external operation handle device, where FIG. 3A is a front view showing the lock plate before being pulled out, FIG. 3B is a right side view thereof, and FIG. It is a front view which shows after drawing-out. FIG. 4 is a plan view showing a state in which the middle piece portion is accommodated in the cylindrical body of the front plate portion.

  1 to 4, the external operation handle device 101 of the switch is roughly divided into a rotary handle portion 1, a front plate 2, an intermediate frame 3, a slider 4, a twist spring 5, a main spring. And a frame 6. As shown in FIG. 2, the external operation handle device 101 of this switch is fixed to a switch 102 such as a circuit breaker installed on a control panel or the like (not shown), and is a slider 4 serving as a handle engaging means. The engaging hole 4b engages with the upside down handle 102a of the switch 102.

  In the case of Embodiment 1, the switch 102 includes a power supply side terminal (not shown) at the right end shown in FIG. 2, and a load side terminal (not shown) at the left end. As is well known, the switch 102 has a fixed contact and a movable contact, and the movable contact 102a is operated via an operation mechanism having a toggle mechanism by operating the upright handle 102a to the upright ON position shown in FIG. Is brought into a closed (hereinafter referred to as ON) state upon contact with the fixed contact, and the tilting handle 102a is operated to the OFF position where it is tilted leftward in FIG. The movable contact is separated from the fixed contact and is opened (hereinafter referred to as OFF). Also, it has a tripping means that automatically turns off by trip operation when overcurrent etc. or leakage current flows, and when it is turned off by trip operation of this tripping means, The tilting handle 102a moves to a trip position which is an intermediate position between the ON position and the OFF position. In order to switch the switch 102 from the trip state to the ON state again, the tilting handle 102a is once moved from the OFF position to the reset position in the left direction in FIG. This is done by moving the inverted handle 102a to the right ON position.

  If the tripping means provided in the switch 102 breaks down, the tripping means will not operate even if an overcurrent flows in the circuit. Therefore, the fixed contact and the movable contact that are the main contacts are welded due to the overcurrent. There are things to do. In this case, the tripping means 102a remains in the ON position because the tripping means is not operating. However, even if the tilting handle 102a is manually moved to the OFF position, it reaches the OFF position. It is a configuration that can not be.

  In the external operation handle device 101 of the switch, the rotary handle unit 1 is for manually performing the opening / closing operation of the switch 102 shown in FIG. 2 from the front outside of the housing of a control panel or the like (not shown). The operation handle 11 and a rotating shaft 11a formed integrally with the handle 11 are provided. A groove 11 b is provided on one side of the operation handle 11. The lock plate 14 is attached to the operation handle 11 so that a part of the lock plate 14 is stored in the groove 11 b of the operation handle 11. The lock plate 14 is provided so as to be movable in a direction perpendicular to the axial direction of the rotation shaft 11a. As shown in FIG. 3A, the lock plate 14 includes a lock hole 14a penetrating the lock plate 14, a lock piece 14b protruding in the axial direction of the operation handle 11, and a spring through hole 14c. Yes. The lock plate 14 and its lock piece 14b constitute a lock member.

  The pin 15 passes through the spring through hole 14 b of the lock plate 14 and is fixed to the operation handle 11. A compression spring 16 is provided between the pin 15 and the wall portion of the spring through hole 14 c, and the lock plate 14 is stored in the groove 11 b of the operation handle 11 by the reaction force of the compression spring 16. As shown in FIG. 3A, a part of the lock plate 14 is stored in the groove 11b of the operation handle 11 in a normal state. By manually pulling the lock plate 14 against the reaction force of the compression spring 16 in the direction of the arrow shown in FIG. 3C, the lock hole 14a of the lock plate 14 is completely exposed from the groove 11b of the operation handle 11. As described later, by inserting the padlock 103 into the lock hole 14a, the lock plate 14 can be held and locked in that position.

  The front plate 2 serves as a lock position setting means including a frame portion 22 having a cylindrical body 20 provided with a through hole in the axial direction, and a bearing 21a that pivotally supports the rotation shaft 11a of the operation handle 11. It is comprised by the middle piece part 21. FIG. The middle piece portion 21 is detachably accommodated in the through hole of the cylindrical body 20 and can be separated from the frame portion 22. On the inner peripheral surface portion of the cylindrical body 20 of the frame portion 22, a first fitting convex portion 22 b 1, a second fitting convex portion 22 b 2, which are arranged at intervals of 90 degrees around the axis of the rotating shaft 11 a, The 3rd fitting convex part 22b3 and the 4th fitting convex part 22b4 are provided. These 1st-4th fitting convex parts 22b1-22b4 comprise the frame part side fitting means. Of these fitting projections, the first fitting projection 22b1 is provided with a guide hole 22a that fits into a release pin 32 described later.

  A first fitting recess 21b1 and a second fitting recess 21b2 arranged at intervals of 90 degrees around the axial center of the middle piece portion 21 are arranged on the outer peripheral portion of the axial end surface 210 of the middle piece portion 21. And the 3rd fitting recessed part 21b3 and the 4th fitting recessed part 21b4 are provided. These first to fourth fitting recesses 21b1 to 21b4 constitute a lock position setting means side fitting means. The middle piece portion 21 is accommodated in the through hole of the cylindrical portion 20 in a state in which the first to fourth fitting concave portions 21b1 to 21b4 and the first to fourth fitting convex portions 22b1 to 22b4 are fitted. The The first to fourth fitting concave portions 21b1 to 21b4 of the middle piece portion 21 and the first to fourth fitting convex portions 22b1 to 22b4 of the cylindrical body 20 are spaced by 90 degrees around each axis. Since they are provided, the relative positions of the middle piece portion 21 and the cylindrical body 20 can be changed at intervals of 90 degrees around the axial center by changing their corresponding positions to be engaged.

  An annular guide groove 21d surrounding the bearing 21a is provided on the surface of the one end face 210 of the middle piece portion 21, and the lock piece 14b provided on the lock plate 14 is slidably engaged with the guide groove 21d. Match. As clearly shown in FIG. 4, the first end surface 210 of the middle piece 21 has a first intermediate portion provided between the first fitting recess 21 b 1 and the fourth fitting recess 21 b 4. A guide 21e, a second guide 21f provided in a substantially intermediate portion between the first fitting recess 21b1 and the second fitting recess 21b2, a second fitting recess 21b2, and a third fitting recess 21b3. And a third guide 21g provided at a substantially intermediate portion between the first guide 21g and the third guide 21g. The bottom surfaces of the first guide 21e, the second guide 21f, and the third guide 21g are configured to be continuous on the same plane as the bottom surface of the guide groove 21d. The first guide 21e and the third guide 21g are provided at an interval of approximately 180 degrees with the axis of the middle piece portion 21 as the center.

  Further, on the one end surface 210 of the middle piece portion 21, a first shielding wall 21c1 constituting an outer peripheral wall of the guide groove 21d is provided between the third fitting recess 22b3 and the fourth fitting recess 22b4. Is provided. The second shielding wall 21c2 that constitutes the outer peripheral wall of the guide groove 21d is provided so as to cover the first guide 21e in the counterclockwise direction up to substantially the middle portion, and further, the third shielding wall 21c2 that constitutes the outer peripheral wall of the guide groove 21d. The shielding wall 21c3 is provided so as to cover the third guide 21g almost counterclockwise. The circumferential lengths of the second shielding wall 21c2 and the third shielding wall 21c3 are set to the dimension a as shown in FIG. The first to third shielding walls 21c1 to 21c3 constitute shielding walls that prevent the lock pieces 14b of the lock plate 14 from moving outward in the vertical direction with respect to the axis of the middle piece portion 21 from the guide groove 21d. is doing. The first shielding wall 21c1 and the second guide 21f are provided at an interval of about 180 degrees around the axis of the middle piece portion 21, and the second shielding wall 21c2 and the third shielding wall 21c3 are: The center piece portion 21 is provided at an interval of about 180 degrees about the axis.

  Although the details will be described later, when the switch 102 is in the OFF position, the lock piece 14b of the lock plate 14 abuts against the second shielding wall 21c2 or the second shielding wall 21c3 and is in relation to the axis of the middle piece portion 21. Although it cannot move to the outside in the vertical direction, the lock piece 14b is moved to the reset position by slightly rotating the operation handle 11 counterclockwise from the OFF position, so that the lock piece 14b is moved to the second shielding wall 21c2 or the second shielding wall 21c2. It is possible to move away from the second shielding wall 21c3 and move into the first guide 21e or the third guide 21g. Therefore, at this reset position, the lock plate 14 can be pulled out from the operation handle 11, and the lock plate 14 can be locked with the padlock 103 (see FIG. 3), as will be described later. Even when the operation handle 11 is moved from the reset position to the OFF position in this state, the lock piece 14b moves while being engaged with the first guide 21e or 21g, and the engagement is continued.

  When the lock piece 14b of the lock plate 14 corresponds to the second guide 21f at the ON position of the switch 102, the lock piece 14b can move into the second guide 21f. 14 can be locked with a padlock 103 (see FIG. 3). From the above, the first guide 21e and the third guide 21g may be referred to as an OFF guide, and the second guide 21f may be referred to as an ON guide.

  The middle piece portion 21 is provided with a plurality of ridges 21h extending in the axial direction. When the middle piece portion 21 is inserted into the inside of the through hole of the cylindrical body 20 of the frame portion 22, the end edges of these ridges 21 h come into contact with the inner peripheral surface of the cylindrical body 20 so that the middle piece portion 21 is Stabilize within the cylinder 20.

  The intermediate frame 3 serving as a base for the front plate 2 is disposed on the bottom surface of the frame portion 22 of the front plate 2. The intermediate frame 3 has an interlock plate 31 inserted through the notch hole 3c and having a tip engaged with the long hole 13c of the operation plate 13, and the interlock plate 31 is unlocked when the control panel is opened. A release pin 32 that can be turned on, and a screw 33 that is fastened to the release pin 32 after the release pin 32 is engaged with the interlock plate 31.

  The interlock plate 31 constitutes a door lock mechanism, and locks the control panel door not to open when the operation handle 11 is in the ON position, and prohibits the operation handle 11 from being turned on when the control panel is opened. To do. The release pin 32 is inserted into the guide hole 22 a from the front surface of the front plate 2 and is fastened by a screw 33 in a state of being engaged with the engagement hole 31 a of the interlock plate 31. When the switch 102 is ON, the door lock is released by rotating the release pin 32 to rotate the interlock plate 31 to unlock the door opening / closing mechanism (not shown) of the control panel. . The release of the door lock enables an ON operation when the door is opened.

  In addition, when releasing the lock and enabling the ON operation at the time of opening the door, the switch OFF position (described later, as shown in FIG. There are two types of cases: a case where the lock is released at a position corresponding to the position) and a case where the lock is released at a reset position (corresponding to a position where the rotary handle portion 1 in FIG. 1 is further rotated counterclockwise). However, in order to cope with these, it is not a good idea to replace the interlock plate 31 on each occasion, for example, on the manufacturer side. Therefore, as shown in FIG. 1, when the engagement hole 31 a of the interlock plate 31 with which the release pin 32 engages is constituted by two adjacent engagement holes, and the interlock plate 31 is provided in the intermediate frame 3. The rotation stroke is adjusted by selecting one of the two engagement holes and engaging with the release pin 32, so that the two types described above can be accommodated. Thereby, the interlock plate 31 may be one type, which leads to standardization of the external operation handle.

  The operation plate 13 includes a pin 13a protruding on one surface. The operation plate 13 has a screw hole 13b at a substantially central portion thereof, and is fixed integrally with the operation handle 11 by a screw 12 that passes through the screw hole 13b and is screwed to the rotating shaft 11a of the operation handle 11. Is done. The fixed angle between the operation plate 13 and the operation handle 11 can be changed around the screw 12. The twist spring 5 is provided between the intermediate frame 3 and the operation plate 13, and one end thereof is fixed to the intermediate frame 3 and the other end is fixed to the operation plate 13. The twisting spring 5 causes the operating handle 11 and the operating plate 13 to always receive a biasing force in a predetermined direction with respect to the front plate 2 and the intermediate frame 3. The action of the twisting spring 5 will be described later.

  The slider 4 includes a long hole 4a that is slidably engaged with a pin 13a provided on the operation plate 13, and rail receiving portions 4c1 and 4c2 provided on both sides are a pair of guide rails 6b1 of the main frame 6. , 6b2 are slidably engaged with each other. Therefore, if the operation plate 13 is rotated clockwise, the slider 4 moves upward in FIG. 1 along the guide rails 6a1 and 6a2, and if the operation plate 13b is rotated counterclockwise, the slider 4 is moved. It moves downward in FIG. 1 along the guide rails 6a1 and 6a2.

  As shown in FIG. 2, the mounting legs 3a and 3b of the intermediate frame 3 are fixed to the main frame 6 by screws 7a and 7b. The main frame 6 is fixed to the upper surface of the switch 102 installed inside the control panel as described above. At this time, the inverted handle 102 a of the switch 102 is engaged with the engagement hole 4 b of the slider 4. Therefore, the tilting handle 102a is driven to the ON position shown in FIG. 2 or the left OFF position in FIG. 2 by the slider 4 that moves the guide rails 6a1 and 6a2. Further, when the switch 102 trips due to an overcurrent or the like, the raising / lowering handle 102a moves to a trip position which is a substantially intermediate position between the ON position and the OFF position. At this time, the slider 4 moves up and down. Driven by the shape handle 102a, the guide rails 6a1 and 6a2 move to a substantially intermediate position.

  The twist spring 5 is provided between the intermediate frame 3 and the operation plate 13 with one end fixed to the intermediate frame 3 and the other end fixed to the operation plate 13. The twist spring 5 constantly urges the operation handle 11 toward the trip position via the operation plate 13. Accordingly, the urging force of the twist spring 5 acts as an assisting force against the rotational operating force of the operation handle 11 from the ON position to the OFF position and from the OFF position to the ON position, and the engagement hole 4 b of the slider 4. And the tilting handle 102a are urged in the ON or OFF direction to remove them. As described above, the urging force of the operation handle 11 in the ON or OFF direction is assisted by the twist spring 5, so that the outer shape of the external operation handle device 101 can be made compact.

  In the first embodiment, the front plate 2, the intermediate frame 3, and the main frame 6 constitute the frame of the external operation handle device. However, the front plate 2, the intermediate frame 3, and the main frame 6 are the first embodiment. There is no need for such a separate body, and any two or all of these may be integrated into a frame.

  When the external operation handle device 101 of the switch is assembled as shown in FIG. 2, the operation handle 11 can be manually rotated clockwise or counterclockwise within a range of approximately 90 degrees. Since the operation handle 11 and the operation plate 13 are fixed by the screw 12, the operation plate 13 is simultaneously rotated by the rotation of the operation handle 11, and the rotation is converted into a linear movement by the slider 4. By the linear movement of the slider 4, the tilting handle 102 a of the switch 102 is operated, and the switch 102 is turned on or off.

  Next, in the external operation handle device 101 of the switch configured as described above, an ON lock configuration in which the operation handle 11 is locked at the ON position of the switch 102, and the operation handle 11 is turned off of the switch 102. The configuration of the OFF lock that locks in position and the configuration of the OFF lock prevention that prevents the operation handle 11 from being OFF locked when the main contact is welded due to a failure of the switch 102 will be described in detail.

  The external operation handle device 101 of the switch has a configuration in which the operation handle 11 can be set to either ON lock or OFF lock (hereinafter referred to as ON / OFF lock) according to a request from a user of the control panel, and the operation handle. 11 can be configured in any of the configurations in which only the OFF lock can be set (hereinafter referred to as OFF lock). In any of these configurations, when the main contact is welded and remains ON due to a failure of the switch 102, an OFF lock prevention function for preventing the operation handle 11 from being OFF locked is provided.

  FIG. 5 shows the configurations (b1) to (b4) that enable ON / OFF locking and the configurations (c1) to (c4) that enable only OFF locking. It is explanatory drawing shown corresponding to a4). (A1) shows the case where the operating direction of the upside down handle 102a of the switch 102 is the vertical direction and the ON position is upward (hereinafter referred to as the 12 o'clock position), and (a2) is the upside down type. The case where the operation direction of the handle 102a is horizontal and the ON position is to the left (hereinafter referred to as the 9 o'clock position) is shown. (A3) shows the operation direction of the tilting handle 102a is vertical and the ON position is The case of the lower side (hereinafter referred to as the 6 o'clock position) is shown, and (a4) shows that the operating direction of the tilting handle 102a is horizontal and the ON position is on the right side (hereinafter referred to as the 3 o'clock position). It shows a case.

  First, the configuration (b1) that enables the ON / OFF lock when the mounting direction of the switch 102 is (a1) will be described. When the mounting direction of the switch is (a1), the main frame 6, the intermediate frame 3, and the front plate 2 are arranged as shown in FIG. 1, corresponding to the mounting direction. In this arrangement, the middle piece 21 and the operation handle 11 are assembled into the front plate 2 as follows. That is, first, the operation handle 11 is detached from the front plate 2 by loosening the screws 12 fixing the operation plate 13 to the rotation shaft 11 a of the operation handle 11. Next, the middle piece portion 21 is positioned with respect to the cylindrical body 20 so that the first fitting concave portion 21b1 of the middle piece portion 21 corresponds to the first fitting convex portion 22b1 of the cylindrical body 20, and in this state, respectively. The corresponding fitting concave portions 21b1 to 21b4 and the fitting convex portions 22b1 to 22b4 are fitted to accommodate the middle piece portion 21 in the cylindrical body 20.

  Next, the operation handle 11 is inserted into the bearing 21 a of the middle piece portion 21, and the rotating shaft 11 a of the operation handle 11 and the operation plate 13 are fixed by the screw 12. At this time, when the inverted handle 102a of the switch 102 is in the ON position, the anti-lock plate side 11c of the operation handle 11 coincides with the 12 o'clock position of the front plate 2 and is operated when the inverted handle 102a is in the OFF position. The fixing direction of the operation handle 11 and the operation plate 13 is set so that the anti-lock plate side 11c of the handle 11 matches the 9 o'clock position of the front plate 2. The lock piece 14 b of the lock plate 14 is engaged with the guide groove 21 d of the middle piece portion 21 by incorporating the operation handle 11 into the front plate 2.

  In the configuration of (b1) in FIG. 5, the counter-lock plate side 11c of the operation handle 11 is rotated 90 degrees counterclockwise from the ON position at 12:00 to the OFF position at 9 o'clock. For example, the tilting handle 102a of the switch 102 is driven from the ON position to the OFF position by the slider 4 engaged with the operation plate 13, and the switch 102 is turned OFF. If the anti-lock plate side 11c of the operation handle 11 is rotated 90 degrees clockwise from the OFF position to the ON position, the tilting handle 102a is driven to the ON position and the switch 102 is turned ON.

  When the anti-lock plate side 11c of the operation handle 11 is in the ON position, that is, when the switch 102 is ON, the lock plate 14 attached to the operation handle 11 is a position that is 180 degrees different from the ON position. The lock piece 14b of the lock plate 14 is at a position corresponding to the second guide 21f of the middle piece portion 21 at the 6 o'clock position. Therefore, if the lock plate 14 is manually pulled outward of the operation handle 11, the lock piece 14b moves from the guide groove 21d into the second guide 21f, and the lock plate 14 is pulled out from the groove 11b of the operation handle 11. Can do. FIG. 6B schematically shows a state in which the lock plate 14 is pulled out.

  When the lock plate 14 is pulled out from the operation handle 11, the lock hole 14a of the lock plate 14 is completely exposed from the groove 11b of the operation handle 11 as shown in FIG. By inserting 103, the lock plate 14 can be prevented from returning into the groove 11b of the operation handle 11. As a result, the external operation handle device is ON-locked. Even if the operation handle 11 is to be turned to the OFF position in this state, the lock piece 14b of the lock plate 14 comes into contact with the wall portion 21f1 of the second guide 21f of the middle piece portion 21, so that it can be turned. First, the switch 102 is locked in the ON state.

  Next, when the anti-lock plate side 11a of the operation handle 11 is in the OFF position, that is, when the switch 102 is in the OFF state, the lock plate 14 attached to the operation handle 11 is 180 degrees different from the OFF position. The lock piece 14b of the lock plate 14 is at a position corresponding to the second shielding wall 21c2 of the middle piece 21. Therefore, in this state, the lock plate 14 cannot be pulled out from the operation handle 11.

  When the operation handle 11 is further rotated counterclockwise from the OFF position to correspond to the reset position, the lock piece 11b of the lock plate 11 is detached from the second shielding wall 21c2 and corresponds to the first guide 21e. Become. If the lock plate 14 is manually pulled outward in this state, the lock piece 14b moves from the guide groove 21d into the first guide 21e, and the lock plate 14 can be pulled out of the operation handle 11. it can. FIG. 6A schematically shows a state in which the lock plate 14 is pulled out. When the operation handle 11 at the reset position is released, the operation handle 11 returns to the OFF position. At this time, the lock piece 14b of the lock plate 14 moves in the first guide 21e in the clockwise direction and moves to the second position. The lock plate 14 is pulled out from the operation handle 11 until reaching the back side of the shielding wall 21c2.

  In this state, by inserting the padlock 103 into the lock hole 11a and locking it, the operation lever 11 is turned OFF, and even if the operation handle 11 is turned to the ON position, the lock piece 14b of the lock plate 14 remains in the middle frame portion. Since the operation handle 11 cannot be rotated, the switch 102 is locked in the OFF state.

  Next, a case where an overcurrent flows through the electric circuit and the movable contact is pulled off from the fixed contact by the trip operation of the tripping means of the switch 102 will be described. In this case, the raising / lowering handle 102a of the switch 102 moves to a substantially intermediate position between the ON position and the OFF position simultaneously with the trip operation. By the movement of the tilting handle 102a, the operation handle 11 is driven counterclockwise via the slider 4 and the operation plate 13, and the position of the operation handle 11 on the anti-lock plate side 11c is almost the ON position and the OFF position. Move to the intermediate trip position and stop. At this time, the lock plate 14 provided on the operation lever 11 is at a position corresponding to the second shielding wall 21c2 of the middle piece portion 21 shown in FIG. 5B1. Therefore, the lock piece 14 b of the lock plate 14 is shielded by the second shielding wall 21 c 2, and the lock plate 14 cannot be pulled out from the groove 11 b of the operation handle 11. This prevents the operation handle 11 from being locked at the trip position.

  To turn on the switch 102 once turned off, the lock plate 14 is unlocked, the lock plate 14 is returned to the operation handle 11, and the operation handle 11 is rotated clockwise from the OFF position to turn on. Is moved to the ON position, and the switch 102 is turned ON.

  Next, in the external operation handle device having the configuration of (b1) in FIG. 5, even if the tripping means of the switch 102 breaks down and an overcurrent flows in the electric circuit, the trip operation is not performed, and the fixed contact of the switch 101 A case where an abnormal situation occurs in which the movable contact and the movable contact are welded due to heat generated by energization of an overcurrent and remains in an ON state will be described. In this case, as described above, the upright handle 101a of the switch 101 remains in the ON position, and the position of the operation handle 11 also remains in the ON position. At this time, even if the operating handle 11 is manually turned counterclockwise, the tilting handle 102a can be moved only to the trip position at most because of the structure of the operating mechanism inside the switch 101. If the hand is released from the operation handle 11, it is returned to the ON position by a strong biasing force by a spring means provided in the operation mechanism of the switch 101. Therefore, the operation handle 11 cannot be moved to the trip position, and OFF lock is prevented.

  Next, the configuration (b2) that enables the ON / OFF lock when the mounting direction of the switch 102 is (a2) will be described. When the mounting direction of the switch is (a2) in FIG. 5, the main frame 6, the intermediate frame 3, and the front plate 2 are rotated 90 degrees counterclockwise from the arrangement shown in FIG. It becomes arrangement in the state. In the case of this arrangement, the middle piece portion 21 is positioned with respect to the cylindrical body 20 so that the fourth fitting concave portion 21b4 of the middle piece portion 21 corresponds to the first fitting convex portion 22b1 of the cylindrical body 20, and the state The fitting concave portions 21b1 to 21b4 and the fitting convex portions 22b1 to 22b4 corresponding to each other are fitted to each other, and the middle piece portion 21 is accommodated in the cylindrical body 20. The operation handle 11 is mounted on the front plate 2 and the operation of fixing the operation handle 11 and the operation plate 13 is the same as in the case of the configuration (b1) described above.

  Next, the configuration (b3) that enables the ON / OFF lock when the mounting direction of the switch 102 is (a3) will be described. When the mounting direction of the switch is (a3) in FIG. 5, the main frame 6, the intermediate frame 3, and the front plate 2 are rotated 180 degrees counterclockwise from the arrangement shown in FIG. It becomes arrangement in the state. In this arrangement, the middle piece portion 21 is positioned with respect to the cylindrical body 20 so that the third fitting concave portion 21b3 of the middle piece portion 21 corresponds to the first fitting convex portion 22b1 of the cylindrical body 20, and the state The fitting concave portions 21b1 to 21b4 and the fitting convex portions 22b1 to 22b4 corresponding to each other are fitted to each other, and the middle piece portion 21 is accommodated in the cylindrical body 20. The manner in which the operation handle 11 is attached to the front plate 2 and the operation of fixing the operation handle 11 and the operation plate 13 is the same as in the case of the configuration (b1) described above.

  Next, the configuration (b4) that enables the ON / OFF lock when the mounting direction of the switch 102 is (a4) will be described. When the mounting direction of the switch is (a4) in FIG. 5, the main frame 6, the intermediate frame 3, and the front plate 2 are rotated 270 degrees counterclockwise from the arrangement shown in FIG. 1 corresponding to the mounting direction. It becomes arrangement in the state. In the case of this arrangement, the middle piece portion 21 is positioned with respect to the cylindrical body 20 so that the second fitting concave portion 21b2 of the middle piece portion 21 corresponds to the first fitting convex portion 22b1 of the cylindrical body 20, and the state The fitting concave portions 21b1 to 21b4 and the fitting convex portions 22b1 to 22b4 corresponding to each other are fitted to each other, and the middle piece portion 21 is accommodated in the cylindrical body 20. The operation handle 11 is mounted on the front plate 2 and the operation of fixing the operation handle 11 and the operation plate 13 is the same as in the case of the configuration (b1) described above.

  In any of the configurations of (b2) to (b4) in FIG. 5 described above, as in the configuration of (b1), the anti-lock plate side 11c of the operation handle 11 is set to the ON position that is at 12:00. Rotate 90 degrees counterclockwise to the OFF position, which is the 9 o'clock position, the slidable handle 102a of the switch 102 is driven from the ON position to the OFF position by the slider 4 engaged with the operation plate 13. Thus, the switch 102 is turned off. If the anti-lock plate side 11c of the operation handle 11 is rotated 90 degrees clockwise from the OFF position to the ON position, the tilting handle 102a is driven to the ON position and the switch 102 is turned ON.

  In any of the configurations of (b2) to (b4) in FIG. 5, the relative positional relationship between the lock plate 14 and the middle piece portion 21 is the same as that in the configuration of (b1) in FIG. Are the same. Therefore, in the external operation handle device having the configuration shown in (b2) to (b4), the movable contact is removed from the fixed contact by the ON / OFF lock operation and the trip operation of the tripping means of the switch 102. The operation of preventing the operation handle 11 from being locked and the operation of turning on the switch 102 once turned off are the same as those of the arrangement shown in FIG. 5 (b1). Further, the operation of preventing the OFF lock when the tripping means of the switch 102 fails and an abnormal situation occurs in which the main contact of the switch 102 is welded and remains in the ON state is also shown in FIG. ).

  Next, the configuration (c1) that enables only the OFF lock when the switch 102 is attached in the direction (a1) will be described. When the mounting direction of the switch is (a1), the middle piece portion 21 with respect to the cylindrical body 20 so that the third fitting concave portion 21b3 of the middle piece portion 21 corresponds to the first fitting convex portion 22b1 of the cylindrical body 20. In this state, the corresponding fitting concave portions 21b1 to 21b4 and the fitting convex portions 22b1 to 22b4 are fitted, and the middle piece portion 21 is housed in the cylindrical body 20. The operation handle 11 is mounted on the front plate 2 and the operation of fixing the operation handle 11 and the operation plate 13 is the same as in the case of the configuration (b1) described above.

  In the configuration of (c1) in FIG. 5, when the anti-lock plate side 11c of the operation handle 11 is in the ON position, that is, when the switch 102 is ON, the lock plate 14 attached to the operation handle 11 is ON. The lock piece 14 b of the lock plate 14 is located at a position corresponding to the first shielding wall 21 c 1 of the middle piece portion 21. Therefore, the lock plate 14 cannot be pulled out from the operation handle 11, and the ON lock is prevented. FIG. 7B schematically shows the state.

  Next, when the anti-lock plate side 11a of the operation handle 11 is in the OFF position, that is, when the switch 102 is in the OFF state, the lock plate 14 attached to the operation handle 11 is 180 degrees different from the OFF position. The lock piece 14b of the lock plate 14 is at a position corresponding to the third shielding wall 21c3 of the middle piece portion 21. Therefore, in this state, the lock plate 14 cannot be pulled out from the operation handle 11.

  When the operation handle 11 is further rotated counterclockwise from the OFF position to correspond to the reset position, the lock piece 11b of the lock plate 11 is disengaged from the third shielding wall 21c3 and corresponds to the third guide 21g. Become. If the lock plate 14 is manually pulled outward in this state, the lock piece 14b moves from the guide groove 21d into the third guide 21g, and the lock plate 14 can be pulled out of the operation handle 11. it can. FIG. 7A schematically shows a state where the lock plate 14 is pulled out. When the operation handle 11 in the reset position is released, the operation handle 11 returns to the OFF position. At this time, the lock piece 14b of the lock plate 14 moves in the third guide 21g in the clockwise direction and moves to the third position. The lock plate 14 remains pulled out of the operation handle 11 after reaching the back side of the shielding wall 21c3.

  In this state, by inserting the padlock 103 into the lock hole 11a and locking it, the operation lever 11 is turned OFF, and even if the operation handle 11 is turned to the ON position, the lock piece 14b of the lock plate 14 remains in the middle frame portion. Since it abuts against the wall portion of the third guide 21g, the switch 102 cannot be rotated and the switch 102 is locked in the OFF state.

  Next, a case where an overcurrent flows through the electric circuit and the movable contact is pulled off from the fixed contact by the trip operation of the tripping means of the switch 102 will be described. In this case, the raising / lowering handle 102a of the switch 102 moves to a substantially intermediate position between the ON position and the OFF position simultaneously with the trip operation. By the movement of the tilting handle 102a, the operation handle 11 is driven counterclockwise via the slider 4 and the operation plate 13, and the position of the operation handle 11 on the anti-lock plate side 11c is almost the ON position and the OFF position. Move to the intermediate trip position and stop. At this time, the lock plate 14 provided on the operation lever 11 is at a position corresponding to the third shielding wall 21c3 of the middle piece portion 21 shown in (c1) of FIG. Accordingly, the lock piece 14 b of the lock plate 14 is shielded by the third shielding wall 21 c 3, and the lock plate 14 cannot be pulled out from the groove 11 b of the operation handle 11. This prevents the operation handle 11 from being locked at the trip position.

  To turn on the switch 102 once turned off, the lock plate 14 is unlocked, the lock plate 14 is returned to the operation handle 11, and the operation handle 11 is rotated clockwise from the OFF position to turn on. Is moved to the ON position, and the switch 102 is turned ON.

  Next, in the external operation handle device having the configuration of (c1) in FIG. 5, even if the tripping means of the switch 102 breaks down and an overcurrent flows in the electric circuit, the trip operation is not performed, and the fixed contact of the switch 101 A case where an abnormal situation occurs in which the movable contact and the movable contact are welded due to heat generated by energization of an overcurrent and remains in an ON state will be described. In this case, as described above, the upright handle 101a of the switch 101 remains in the ON position, and the position of the operation handle 11 also remains in the ON position. At this time, even if the operating handle 11 is manually turned counterclockwise, the tilting handle 102a can be moved only to the trip position at most because of the structure of the operating mechanism inside the switch 101. If the hand is released from the operation handle 11, it is returned to the ON position by a strong biasing force by a spring means provided in the operation mechanism of the switch 101. Therefore, the operation handle 11 cannot be moved to the trip position, and OFF lock is prevented.

  Next, the configuration (c2) that enables only the OFF lock when the mounting direction of the switch 102 is (a2) will be described. When the mounting direction of the switch is (a2) in FIG. 5, the main frame 6, the intermediate frame 3, and the front plate 2 are rotated 90 degrees counterclockwise from the arrangement shown in FIG. It becomes arrangement in the state. In the case of this arrangement, the middle piece portion 21 is positioned with respect to the cylindrical body 20 so that the second fitting concave portion 21b2 of the middle piece portion 21 corresponds to the first fitting convex portion 22b1 of the cylindrical body 20, and the state The fitting concave portions 21b1 to 21b4 and the fitting convex portions 22b1 to 22b4 corresponding to each other are fitted to each other, and the middle piece portion 21 is accommodated in the cylindrical body 20. The operation handle 11 is mounted on the front plate 2 and the operation of fixing the operation handle 11 and the operation plate 13 is the same as in the case of the configuration (b1) described above.

  Next, the configuration (c3) that enables only the OFF lock when the mounting direction of the switch 102 is (a3) will be described. When the mounting direction of the switch is (a3) in FIG. 5, the main frame 6, the intermediate frame 3, and the front plate 2 are rotated 180 degrees counterclockwise from the arrangement shown in FIG. It becomes arrangement in the state. In the case of this arrangement, the middle piece portion 21 is positioned with respect to the cylindrical body 20 so that the first fitting concave portion 21b1 of the middle piece portion 21 corresponds to the first fitting convex portion 22b1 of the cylindrical body 20, and the state The fitting concave portions 21b1 to 21b4 and the fitting convex portions 22b1 to 22b4 corresponding to each other are fitted to each other, and the middle piece portion 21 is accommodated in the cylindrical body 20. The manner in which the operation handle 11 is attached to the front plate 2 and the operation of fixing the operation handle 11 and the operation plate 13 is the same as in the case of the configuration (b1) described above.

  Next, the configuration (c4) that enables only the OFF lock when the switch 102 is attached in the direction (a4) will be described. When the mounting direction of the switch is (a4) in FIG. 5, the main frame 6, the intermediate frame 3, and the front plate 2 are rotated 270 degrees counterclockwise from the arrangement shown in FIG. 1 corresponding to the mounting direction. It becomes arrangement in the state. In the case of this arrangement, the middle piece portion 21 is positioned with respect to the cylindrical body 20 so that the fourth fitting concave portion 21b4 of the middle piece portion 21 corresponds to the first fitting convex portion 22b1 of the cylindrical body 20, and the state The fitting concave portions 21b1 to 21b4 and the fitting convex portions 22b1 to 22b4 corresponding to each other are fitted to each other, and the middle piece portion 21 is accommodated in the cylindrical body 20. The operation handle 11 is mounted on the front plate 2 and the operation of fixing the operation handle 11 and the operation plate 13 is the same as in the case of the configuration (b1) described above.

  In any of the configurations (c2) to (c4) in FIG. 5 described above, the anti-lock plate side 11c of the operation handle 11 is moved in the same manner as the configurations (b1) to (b4) and (c1). , When it is turned 90 degrees counterclockwise from the ON position, which is the 12:00 position, to the OFF position, which is the 9 o'clock position, the tilting handle 102a of the switch 102 is moved by the slider 4 that engages the operation plate 13. The switch 102 is turned off by being driven from the ON position to the OFF position. If the anti-lock plate side 11c of the operation handle 11 is rotated 90 degrees clockwise from the OFF position to the ON position, the tilting handle 102a is driven to the ON position and the switch 102 is turned ON.

  Further, in any of the configurations of (c2) to (c4) in FIG. 5, the relative positional relationship between the lock plate 14 and the middle piece portion 21 is the same as that in the configuration of (c1) in FIG. Are the same. Therefore, in the external operation handle device having the configuration shown in (c2) to (c4), when the movable contact is removed from the fixed contact by the OFF lock operation and the tripping operation of the tripping means of the switch 102. The operation of preventing the operation handle 11 from being locked and the operation of turning on the switch 102 once turned off are the same as those of the arrangement shown in FIG. 5 (c1). The operation of preventing the OFF lock when the tripping means of the switch 102 fails and the main contact of the switch 102 is welded and remains in the ON state is also shown in FIG. ).

  It should be noted that the length a of the second shielding wall 21c2 and the third shielding wall 21c3 of the middle piece portion 21 is locked when the action line of the tripping spring of the switch 102 exceeds the dead point of the toggle link mechanism. The size is set such that the lock pieces 14b of the plate 14 can get over the shielding walls. When the main contact of the switch 102 described above is welded, even if the tilting handle 102a is operated in the OFF direction, the dead point of the toggle link mechanism cannot be exceeded, so the lock piece 14b of the lock plate 14 is The second shielding wall 21c2 or the third shielding wall 21c3 cannot be overcome, and the lock plate 14 cannot be pulled out. Thereby, the OFF lock prevention function at the time of main contact welding is realized. On the other hand, in the case of ON lock, since there is no restriction like OFF lock, the lock plate 14 can be pulled out when the switch 102 is in the ON position. This is the reason why the first shielding wall 21c1, which is the OFF guide, and the second and third shielding walls 21c2, 21c3 have different shapes.

  As described above, since the mounting direction of the front plate 2 also changes corresponding to the mounting direction of the switch, the mounting direction of the switch 102 can be determined by the position of the guide hole 22a provided in the front plate 2. it can.

  Further, as described above, the direction of the front plate 2 with respect to the control panel changes corresponding to the mounting direction of the switch 102, but the ON position, trip position, and OFF position of the operation handle 11 are always constant. Therefore, the indication of “ON”, “OFF”, or “trip” attached to the control panel or the front plate 2 confirms the mounting direction of the switch 102 after the mounting direction of the switch 102 is determined. It is preferable to apply the tape after it has been applied.

  As described above, the operation handle 11 and the middle piece portion 21 serving as the lock position setting means indicate the relative angular position of the switch around the axis of the rotation shaft 11a with respect to the housing such as the control panel. The external operation handle device of the switch according to Embodiment 1 of the present invention is always operated regardless of the mounting direction of the switch 102. The upper position of the handle 11 relative to the front plate 2 at 12:00 of the timepiece can be set to the ON position, and the 9 o'clock position of the timepiece rotated 90 degrees counterclockwise from that position can be set to the OFF position. Also, it can be provided with an ON / OFF lock function and an OFF lock prevention function when the main contact of the switch is welded according to the user's request, or it has an OFF lock only function and can be opened and closed. An OFF lock prevention function at the time of welding the main contact of the vessel can be provided.

Embodiment 2. FIG.
FIG. 8 is a side view of the main part of the external operation handle device for a switch according to Embodiment 2 of the present invention. In the first embodiment, the middle piece portion 21 is inserted into the through hole of the cylindrical body 20 at the substantially central portion of the frame portion 22, but the shapes of the middle piece portion 21 and the frame portion 22 are limited to this. As shown in FIG. 8, the frame unit 22 is not divided into an upper frame 23 and a lower frame 24, and the upper frame 23 is shifted by an interval of 90 degrees as shown in FIG. You may comprise so that 24 can be mounted | worn. In this case, the upper frame 23 constitutes a lock position setting means, and the guide groove 21d, the first to third guides 21e to 21g, and the first to first guides are formed on the surface thereof in the same manner as the surface of the middle piece portion 21 described above. Of course, three shielding walls 21c1 to 21c3 are provided. Other configurations are the same as those in the first embodiment. According to the second embodiment, the external operation handle device for the switch can be configured more simply.

It is a disassembled perspective view of the external operation handle apparatus of the switch by Embodiment 1 of this invention. It is a fragmentary sectional view which shows the state which attached the external operation handle apparatus of the switch by Embodiment 1 of this invention to the switch. FIG. 3 is an explanatory view showing a rotary handle portion of the external operation handle device for a switch according to Embodiment 1 of the present invention. It is a top view which shows the state which mounted | wore the cylinder of the front plate with the outer frame part of the external operation handle apparatus of the switch by Embodiment 1 of this invention. It is a figure which shows the relationship between the mounting position of a middle piece part, and the mounting direction of a switch of the external operation handle apparatus of the switch by Embodiment 1 of this invention. It is explanatory drawing explaining operation | movement of the external operation handle apparatus of the switch by Embodiment 1 of this invention. It is explanatory drawing explaining operation | movement of the external operation handle apparatus of the switch by Embodiment 1 of this invention. It is a side view of the principal part of the external operation handle apparatus of the switch by Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotation-type handle part 2 Front plate 3 Intermediate | middle frame 4 Slider 4a Long hole 4b Engagement hole 5 Hinel spring 6 Main frame 6a1, 6a2 Guide rail 11 Operation handle 11a Rotating shaft 11b Groove 11c Anti-lock plate side 12, 33, 7a, 7b Screw 13 Operation plate 13a, 15 Pin 13b Screw through hole 13c Long hole 14 Lock plate 14a Lock hole 14b Lock piece 14c Spring through hole 16 Compression spring 20 Cylindrical body 21 Middle piece portion 21a Bearing 21b1 First Fitting recess 21b2 second fitting recess 21b3 third fitting recess 21b4 fourth fitting recess 21c1 first shielding wall 21c2 second shielding wall 21c3 third shielding wall 21d guide groove 21e first Guide 21f Second guide 21g Third guide 22 Frame portion 22 a Guide hole 22b1 First fitting convex portion 22b2 Second fitting convex portion 22b3 Third fitting convex portion 22b4 Fourth fitting convex portion 23 Upper frame 24 Lower frame 31 Interlock plate 31a Engaging hole 32 Release pin 101 External operation handle device 102 Switch 102a Upside down handle 103 Padlock

Claims (8)

  An external operation handle device for a switch that opens and closes a switch installed in a casing such as a control panel from the outside of the casing, and that opens and closes contacts via a toggle link mechanism. A handle engaging means that engages with the raising / lowering handle of the container and moves in conjunction with the movement of the raising / lowering handle; and the handle engagement that is exposed to the outside of the housing and connected to the handle engaging means. An operation handle that rotates about a rotation axis in conjunction with movement of the means, and a lock member that is provided on the operation handle and is configured to be movable in a substantially vertical direction with respect to the axis of the rotation axis; A relative angular position about the axis of the rotation shaft is variably provided with respect to the operating handle, and when the relative angular position is a predetermined position, the operating handle is engaged with the lock member. Lock position that can prevent rotation And the operation handle and the lock position setting means have a relative angular position with respect to the switch about the axis of the rotating shaft in the mounting direction of the switch with respect to the housing. An external operation handle device for a switch, characterized in that it can be changed correspondingly.   The handle engaging means is engaged with the tilting handle so as to move linearly in conjunction with the movement of the tilting handle of the switch, and the operation handle is engaged with the handle engaging means. The handle engaging means is connected to the handle engaging portion via an operation plate that rotates in response to the linear movement of the handle engaging means, and the operation plate is detachably fixed to the operation handle and its fixing direction is changed. 2. The external operation of the switch according to claim 1, wherein the change of the relative angular position between the operation handle and the switch is performed by changing a fixing direction of the operation plate. Handle device.   The lock position setting means is detachably attached to a frame portion fixed to the switchgear and has a relative angular position with respect to the switch approximately every 90 degrees corresponding to the mounting direction of the switch. A shield wall and three guides which can be changed and are arranged at an interval of approximately 90 degrees from each other about the axis, and each guide corresponds to the lock member when it corresponds to the lock member. The locking wall is configured to prevent the vertical movement of the locking member when the shielding wall corresponds to the locking member, and the lock position setting means has the operation handle closed by the switch. When in the rotation position corresponding to the position, the lock member corresponds to the shielding wall or a guide that is at an interval of approximately 180 degrees with respect to the shielding wall, and the operation handle is a reset of the switch 3. The frame part according to claim 1, wherein the lock member is attached to the frame portion so as to correspond to one of guides adjacent to both sides of the shielding wall when in a position corresponding to a position. External operation handle device for switch.   The lock position setting means is configured such that when the operation handle is at a position corresponding to a reset position of the switch, the lock member is engaged with one of guides adjacent to both sides of the shielding wall, 4. The external operation handle device for a switch according to claim 3, wherein the switch can be kept engaged even when the switch is moved from the reset position to the open position.   The frame part includes a plurality of frame part side fitting means arranged at intervals of approximately 90 degrees with the axis as a center, and the lock position setting means has an interval of approximately 90 degrees with the axis as a center. A plurality of lock position setting means side fitting means arranged and formed so as to be able to be fitted to the plurality of frame part side fitting means, wherein the lock position setting means includes the frame part side fitting means and the lock The position setting means side fitting means is fitted to the frame portion and the relative angular position of the lock position setting means is changed by the frame portion side fitting means and the lock position setting means side fitting. The external operation handle device for a switch according to claim 3, wherein the operation is performed by changing a correspondence relationship with the combination means.   When the switch is in the closed position, it includes interlock means for prohibiting the opening of the door of the housing such as the control panel, and the frame portion is a guide hole for inserting the release means for releasing the prohibition of the opening of the door The external operation handle device for a switch according to claim 3, further comprising:   4. The external operation handle device for a switch according to claim 3, wherein the lock position setting means is constituted by a middle piece portion inserted into a through hole provided in the frame portion. The external operation of the switch according to claim 3, wherein the frame portion includes a lower frame and an upper frame arranged to overlap the lower frame, and the lock position setting unit is configured by the upper frame. Handle device.

Images