JP3964141B2 - Breaker device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a breaker device.
[0002]
[Prior art]
Explaining the conventional breaker device, when the plug is attached to the case from above, the pair of electrodes in the case is short-circuited by the short-circuit terminal of the plug, the main circuit is turned on, and when the lever provided on the plug is further tilted The relay circuit is turned on when the lever turns on the micro switch provided in the case. When the lever is raised from this state, the micro switch is turned off and the relay circuit is turned off.In addition, if the plug is removed from the case while picking up the raised lever, the short circuit between both electrodes will be released. Therefore, the main circuit is turned off.
[0003]
[Problems to be solved by the invention]
When the main circuit is turned off by removing the plug, an arc is not generated between the electrode and the short-circuit terminal by previously turning off the relay circuit by raising the lever. However, since there is a time lag (about 150 milliseconds) from when the micro switch is turned off until the relay circuit is completely turned off, the plug is unplugged before the relay circuit is completely turned off. When the main circuit is switched off, an arc may occur between the electrode and the short-circuit terminal.
[0004]
Here, in the conventional breaker device described above, an operation for raising the lever to an extractable posture (that is, an operation for opening the relay circuit), and an operation for subsequently removing the plug (that is, for opening the main circuit). The two operations can be performed as a series of operations while the finger is hooked on the lever, and the movement direction of the fingers in the two operations is substantially the same direction (upward). ing. Therefore, these two operations can be performed at once in an extremely short time. In this quick operation, if the time from when the micro switch is turned off to when the main circuit is turned off is shorter than the above time lag of the relay circuit, the main circuit will be turned off before the relay circuit is completely turned off. Is switched to the OFF state and an arc is generated.
[0005]
The present invention has been made in view of the above circumstances, and aims to prevent the main circuit from switching to the OFF state before the relay circuit is completely turned OFF.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a case provided with a pair of electrodes constituting the main circuit and a switch member constituting the relay circuit, and the pair of electrodes are short-circuited by fitting into the case so as to short-circuit the main pair. A plug for turning on the circuit and turning off the main circuit by detaching from the case; and an ON posture provided on the plug for contacting the switch member and turning on the relay circuit; And an operation member that is displaceable between an OFF posture that separates from the switch member and turns the relay circuit to an OFF state, and the main circuit and the relay circuit are both in an ON state. Before the plug is removed from the case and the main circuit is turned off, the operation member is displaced to the OFF position to turn the relay circuit off. Be those that are turned, the operation member is supported rotatably relative to the plug, the central axis of rotation between the ON position and the OFF position of the operating member, from the case of the plug with withdrawal direction around the same direction, the displacement direction from the O N position of the operating member to the OFF position, is set in a direction different from the removing direction from the casing of the plug, to the case, the Projecting on the outer periphery of the operating member when the operating member is rotated and displaced to the ON posture side with the plug being normally fitted to the case, and extending in a semicircular arc shape concentric with the rotation center of the operating member When the operating member is in the ON position, the protruding portion is locked to the stopper, so that the operating member and the plug are displaced in a direction to be detached from the case. A stopper is provided to restrict this, and the extension end surface of the stopper is allowed to move to the ON position of the operating member when the plug is properly fitted, but when the plug is half-fitted, It was set as the structure which was set as the fitting detection part which interferes with the said protrusion part of an operation member, and the operation member displaces to an ON attitude | position .
[0007]
According to a second aspect of the present invention, in the first aspect of the present invention, the operation member also serves as a grip for gripping the plug when the plug is detached from the case.
[0008]
According to a third aspect of the present invention, in the first or second aspect of the invention , the operation member that has been displaced to the ON posture can be locked to the case, thereby restricting the operation member from returning to the OFF posture side. The configuration is such that a return control part is formed.
[0009]
According to a fourth aspect of the present invention, in the first or third aspect of the present invention, the plug and the operation member have at least one of an ON posture and an OFF posture. A positioning means capable of restricting the looseness of the operation member is provided.
According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the positioning means is configured by a recess and a protrusion that are formed on opposite surfaces of the plug and the operation member and can be fitted to each other, and the operation member is displaced. In the process, the convex portion formed on one of the plug and the operation member is configured to be elastically slidable with respect to the other.
[0010]
The invention of claim 6 is the invention according to any one of claims 1 to 5 , wherein the switch member is constituted by a pair of terminal fittings, and the pair of terminal fittings when the operation member is displaced to an ON position. It was set as the structure which provided the short circuit terminal which short-circuits.
[0011]
[Action and effect of the invention]
[Invention of Claim 1]
Since the operation direction to the OFF posture of the operation member and the subsequent plug removal operation direction are different from each other, the time difference between the operation member operation and the plug operation is large. That is, the timing of the operation of turning off the relay circuit by the operation of the operation member and the operation of turning off the main circuit by the operation of the plug thereafter are greatly shifted. This prevents the main circuit from switching to the OFF state before the relay circuit is completely turned OFF.
[0012]
Further, since the rotation operation direction of the operation member is a direction orthogonal to the plug removal operation direction, a sufficiently large time difference between the operation member operation and the plug operation is ensured.
In addition, since the stopper is provided, it is possible to reliably prevent the main circuit from being turned off by disconnecting the plug even though the operation member is in the ON posture and the relay circuit is in the ON state. Is done.
In addition, since the fitting detection unit is provided, the fitting state of the plug with respect to the case can be detected based on whether or not the operation member can be displaced to the ON posture.
[Invention of claim 2 ]
Since the operation member also serves as a grip for grasping the plug when it is detached from the case, the operation for displacing the operation member to the OFF position and the subsequent operation for removing the plug are continuously performed without releasing the hand from the operation member. Can be done automatically.
[0013]
[Invention of claim 3 ]
By forming the return regulating portion, the operation member can be held in the ON posture.
[Invention of claim 4 ]
The operating member that has been displaced to the ON or OFF position is held in the ON or OFF position by the positioning means.
[0014]
[Invention of claim 5 ]
When the operation member reaches the ON posture or the OFF posture, the free movement is restricted by the fitting of the unevenness. In addition, since the convex portion and the concave portion are elastically and vigorously fitted, the operator can check whether the operation member is in the fitted state, i.e., whether the operation member has reliably reached the ON posture or the OFF posture, depending on the presence or absence of moderation. Can be confirmed.
[Invention of claim 6 ]
Since the terminal fitting is used as the switch member and the means for turning the switch member ON / OFF, the cost can be reduced compared to using a complicated device such as a microswitch as the switch member.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
[Embodiment 1]
A first embodiment of the present invention will be described below with reference to FIGS.
The breaker device according to the present embodiment includes a synthetic resin case 10, a synthetic resin plug 30 fitted in the case 10, and a synthetic resin operation member 40 attached to the plug 30. It is configured. In the following description, in the front-rear direction and the left-right direction, the upper right side in FIG. 1 is referred to as the front, and the lower right side is referred to as the right.
[0017]
The case 10 has an open upper surface and is partitioned into two front and rear chambers by a partition wall 11, and a support column 13 is erected in a front fitting chamber 12 formed by the partition wall 11. Yes. A pair of electrodes 14 having a plate shape are fixedly provided on the left and right side surfaces of the column 13. The pair of electrodes 14 constitutes a main circuit (not shown), and in a state where the plug 30 is not fitted to the column 13, the pair of electrodes 14 are in a non-conductive state separated from each other. Thereby, the main circuit is in an OFF state.
[0018]
The partition wall 11 is formed with a support portion 15 that rises upward. An upper end portion of the support portion 15 extends in an overhang shape toward the fitting chamber 12 (front side), and the operation member 40 extends from the support portion 15. A stopper 16 is formed that extends in a generally quadrangular arc shape concentric with the rotation center. The stopper 16 is slightly higher than the upper surface of the protruding portion 45 of the operation member 40 when the plug 30 is normally fitted to the case 10 (when the plug 30 is fitted at the lowest position with respect to the case 10). The height is set so as not to interfere with the protrusion 45 at the position.
[0019]
At a position near the support portion 15 on the lower surface of the stopper 16, a pair of terminal fittings 18 (switch members that are constituent elements of the present invention) fixed to the end of the electric wire 17 are separated from each other in the front-rear direction and the electric wire 17 is left. It is fixed in a state where it is lined up in front and back so as to extend toward. The pair of terminal fittings 18 constitute a relay circuit (not shown), and when the pair of terminal fittings 18 are not short-circuited, the relay circuit is turned off. Although not shown in the figure, the terminal fitting 18 has an elastic piece facing downward, and is elastically in contact with the upper surface of a short-circuit terminal 46 described later.
[0020]
At a position near the right side of the terminal fitting 18 on the lower surface of the stopper 16, the return restricting portion 19 protrudes downward in a triangular shape and extends in the front-rear direction (a direction generally perpendicular to the rotation direction of the operation member 40). Is formed. The return restricting portion 19 is set to a height that can partially interfere with the upper end of the protruding portion 45 of the operating member 40 in a state where the plug 30 is properly fitted.
The support portion 15 is formed with a rotation restricting portion 20 that extends forward from the left side surface. The distance between the rotation restricting portion 20 and the return restricting portion 19 in the left-right direction (generally the same direction as the rotation direction of the operation member 40) is slightly larger than the protruding portion 45 of the operation member 40.
[0021]
The extending end surface facing the front of the stopper 16 serves as a fitting detection unit 21 that detects whether or not the plug 30 is properly fitted. That is, the stopper 16 also serves as the fitting detection unit 21. The height of the fitting detection unit 21 does not interfere with the protrusion 45 of the operation member 40 in a state in which the plug 30 is normally fitted (the protrusion 45 is positioned below the fitting detection unit 21). The height is set such that the plug 30 can interfere with the protrusion 45 in a half-fitted state (a state at a slightly higher position than the normal fitting).
The plug 30 has a rectangular box shape with an open bottom surface. When the plug 30 is fitted into the case 10, the plug 30 is accommodated so as to be dropped into the fitting chamber 12 from above, and the plug 30 supports the electrode 13 that supports the electrode 14. To be worn. A metal short-circuit member 31 having a pair of left and right elastic legs 32 is fixed inside the plug 30. In a state in which the plug 30 is normally fitted to the case 10 (the support column 13), the pair of elastic legs 32 of the short-circuit member 31 elastically abuts against the pair of electrodes 14 of the support column 13 from the outer surface side. The pair of electrodes 14 can be electrically connected by the short-circuit member 31, and the main circuit is turned on. The plug 30 fitted to the case 10 is positioned in the horizontal direction (direction perpendicular to the fitting direction with respect to the case 10) by fitting the lower end of the plug 30 to the receiving portion 12A on the outer periphery of the bottom of the fitting chamber 12. At the same time, parallel movement in the horizontal direction and rotational movement around the vertical axis are restricted. Further, when the plug 30 is detached from the case 10 upward, the short circuit of the pair of electrodes 14 by the short-circuit member 31 is released, so that the main circuit is turned off.
[0022]
An operation member 40 is attached to the upper surface of the plug 30. The operation member 40 has a disk shape, and a shaft portion 41 (a central axis of rotation of the operation member 40 which is a constituent element of the present invention) is fitted into the bearing hole 33 on the upper surface of the plug 30. As a result, the shaft portion 41 is supported so as to be able to rotate relative to the plug 30. The axis of the shaft 41, that is, the central axis of rotation of the operation member 40, is oriented in substantially the same direction as the fitting direction (vertical direction) of the plug 30 with respect to the case 10.
[0023]
Further, on the upper surface of the plug 30, a convex portion 34 for the ON posture having a substantially hemispherical shape is formed at two positions with an angular interval of 90 ° on the circumference concentric with the bearing hole 33 (in the configuration requirement of the present invention). A certain positioning means) and a convex portion 35 for OFF posture (positioning means which is a constituent element of the present invention) are formed. On the other hand, on the lower surface of the operation member 40, a spherical concave portion 42 (positioning means which is a constituent feature of the present invention) is formed which can be fitted to both the convex portions 34 and 35. In a state where the concave portion 42 is not fitted to any of the convex portions 34 and 35, the operation member 40 is elastically bent partially upward while its lower surface abuts (or slides) the both convex portions 34 and 35. However, when the concave portion 42 is fitted into one of the convex portions 34 and 35, the operation member 40 is elastically restored. In the state in which the concave portion 42 is fitted to any of the convex portions 34 and 35, the enlarged diameter portion 41 </ b> A of the shaft portion 41 is locked to the upper surface wall of the plug 30, so that the operation member 40 is against the plug 30. There is no risk of floating up and down.
[0024]
On the upper surface of the operation member 40, an elongated grip portion 43 extending along the radial direction passing through the rotation center is formed. At the upper end of the grip portion 43, a finger hook portion 44 is formed that protrudes outward along the length direction.
Furthermore, a protrusion 45 that protrudes radially outward is formed on the outer periphery of the operation member 40. Both the upper and lower surfaces of the protrusion 45 are continuous with the upper and lower surfaces of the operation member 40. A short-circuit terminal 46 is fixed on the upper surface of the protruding portion 45. The planar shape, size, and arrangement of the short-circuit terminals 46 are set so that they can simultaneously contact both the pair of terminal fittings 18 on the case 10 side.
[0025]
[Operation of this embodiment]
When the plug 30 is fitted into the case 10, the operation member 40 is previously positioned in an OFF posture in which the concave portion 42 and the OFF posture convex portion 35 are fitted (shown by a solid line in FIG. 3). . In this state, the loose movement of the operation member 40 relative to the plug 30 is restricted by the fitting of the concave portion 42 and the OFF posture convex portion 35.
In this state, the plug 30 is fitted into the case 10 while gripping the grip portion 43. Then, the pair of electrodes 14 are short-circuited by the short-circuit member 31, and the main circuit is turned on. At this time, the protrusion 45 and the fitting detection part 21 are opposed to the circumferential direction (rotation direction) of the operation member 40.
After the plug 30 is fitted, the operation member 40 is rotated 90 ° in the clockwise direction as viewed from above and displaced to the ON posture while the grip portion 43 is held. Then, as shown in FIG. 2, the projecting portion 45 of the operation member 40 sinks under the stopper 16, and the short-circuiting terminal 46 comes into contact with the pair of terminal fittings 18 from below, so that both the terminal fittings 18 are short-circuited. As a result, the relay circuit is turned on.
[0026]
When the operation member 40 in the OFF position is displaced to the ON position, if the plug 30 remains in the half-fitted state (see FIG. 5), the protrusion 45 is forward of the fitting detection unit 21. Therefore, the rotation operation of the operation member 40 is restricted, and the protrusion 45 cannot be brought under the stopper 16. Thereby, it can be seen that the plug 30 remains in the half-fitted state.
In the process of rotating in the ON posture direction while the protrusion 45 is under the stopper 16, the protrusion 45 is elastically bent downward and the stopper 16 is elastically bent upward immediately before the operating member 40 reaches the ON posture. However, the protruding portion 45 passes under the return regulating portion 19. When the operating member 40 passes through the return restricting portion 19 and reaches the ON posture, the operating member 40 that has been elastically bent upward due to interference with the convex portions 34 and 35 is elastically restored, so that the concave portion is accompanied with a sense of moderation. 42 and the convex part 34 for ON attitude | positions fit. Due to the fitting of the convex portion 34 for ON posture and the concave portion 42, the operation member 40 is held in a state in which the loose movement in the rotation direction is restricted.
[0027]
Even if the operation member 40 that has reached the ON posture is to be rotated further, the protrusion 45 is locked from the right side with respect to the rotation restricting portion 20, thereby restricting excessive rotation through the ON posture. Has been. Further, the operation member 40 in the ON posture is restricted from rotating in the direction of returning to the OFF posture by the protrusion 45 being locked from the left with respect to the return restricting portion 19.
In this state, when removing the plug 30 from the case 10, first, the grip portion 43 is picked, the locking force between the protruding portion 45 and the return restricting portion 19, and the fitting force between the ON posture convex portion 34 and the concave portion 42. The operating member 40 is rotated in the counterclockwise direction when viewed from the upper surface while applying a rotational operating force that exceeds. Then, since the short circuit terminal 46 leaves | separates from both the terminal metal fittings 18, the short circuit state of both the terminal metal fittings 18 is cancelled | released, and a relay circuit switches to an OFF state.
[0028]
Then, when the operation member 40 reaches the OFF posture, the OFF posture convex portion 35 and the concave portion 42 are fitted, the operation member 40 is loosely regulated, and the protruding portion 45 is pulled out forward of the stopper 16. Become. Thereafter, the operation member 40 and the plug 30 are lifted with the grip portion 43 being held. Then, the plug 30 is detached from the case 10 (the support column 13), whereby both the electrodes 14 are turned off and the main circuit is switched to the OFF state.
[0029]
It should be noted that when the protruding portion 45 is partly under the stopper 16, that is, when there is a possibility that the both terminal fittings 18 are short-circuited by the short-circuit terminal 46 and the relay circuit is in the ON state, the protruding portion 45 protrudes. By the engagement between the portion 45 and the stopper 16, the upward displacement of the operation member 40 and the plug 30, that is, the switching of the main circuit to the OFF state due to the non-conducting state of both the electrodes 14 is restricted.
[0030]
[Effect of this embodiment]
Since the operation direction of the operation member 40 to the OFF posture is different from the direction of the subsequent detachment operation of the plug 30, the time difference between the operation of the operation member 40 and the operation of the plug 30 is large. In particular, in this embodiment, since the rotation operation direction of the operation member 40 is a direction orthogonal to the plug 30 removal operation direction, it is possible to ensure a sufficiently large time difference between the operation member 40 operation and the plug 30 operation. it can. That is, since the timing of the main circuit OFF operation by the subsequent operation of the plug 30 can be greatly delayed with respect to the operation of the relay circuit OFF by the operation of the operation member 40, the main circuit OFF before the relay circuit is completely turned off. The circuit is prevented from switching to the OFF state.
[0031]
Since the operation member 40 is provided with the grip portion 43, the operation member 40 is also used as a grip for grasping the plug 30 when it is detached from the case 10, so that the operation member 40 is displaced to the OFF posture and thereafter The operation of detaching the plug 30 can be performed continuously without releasing the hand from the operation member 40, and the operability is good.
By forming the return regulating portion 19, the operation member 40 can be held in the ON posture, and the return to the OFF posture side can be reliably prevented.
[0032]
Since the stopper 16 is provided to restrict the operation member 40 and the plug 30 from being displaced in the direction of detaching from the case 10 by being locked to the operation member 40 displaced to the ON position, the operation member 40 is set to the ON position. Thus, it is possible to reliably prevent the plug 30 from being disconnected and the main circuit from being turned off even though the relay circuit is turned on.
Since the plug 30 and the operation member 40 are provided with positioning means (34, 35, 42), the operation member 40 that has been displaced to the ON or OFF position is held in the ON or OFF position by the positioning means.
[0033]
In the process of rotationally displacing the operation member 40 between the ON posture and the OFF posture, the convex portions 34 and 35 provided on the plug 30 are elastically brought into sliding contact with the operation member 40. Accordingly, the convex portions 34 and 35 and the concave portion 42 are elastically and vigorously fitted, and the operator can feel a sense of moderation when fitting. Therefore, it is possible to confirm whether or not the operating member 40 is in the fitted state, that is, whether or not the operating member 40 has reliably reached the ON posture or the OFF posture based on the presence or absence of moderation.
[0034]
As a means for turning the relay circuit on and off, the terminal fitting 18 and the short-circuit terminal 46 formed of a simple metal material are used, so that the cost can be kept low compared to using a complicated device such as a microswitch as a switch member. It has been.
When the plug 30 is properly fitted to the case 10, the operation member 40 in the OFF position is allowed to be displaced to the ON position. However, when the plug 30 is in the half-fitted state, the operation member 40 interferes with the operation member 40 and operates. Since the fitting detection unit 21 that restricts the displacement of the member 40 to the ON posture is provided, the fitting of the plug 30 to the case 10 based on whether or not the operation member 40 in the OFF posture can be displaced to the ON posture side. It is possible to detect the state.
[0035]
[Other Embodiments]
The present invention is not limited to the embodiment described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) In the above embodiment, a case has been described in which the operating member also serves as a grip for removing the plug from the case. However, according to the present invention, the operating member and the grip for gripping when the plug is removed. And may be separate parts.
[0036]
(2) In the above embodiment, the operation member is rotated between the ON posture and the OFF posture. However, according to the present invention, the displacement form of the operation member is not limited to rotation, but linear parallel. It can also be a movement or a rocking displacement.
(3) In the above embodiment, the central axis of the rotation operation of the operation member is parallel to the plug removal operation direction. However, according to the present invention, the rotation operation center axis is inclined with respect to the plug removal operation direction. It can also be perpendicular.
[0037]
(4) In the above embodiment, the concave portion of the positioning means is formed on the operating member and the convex portion is formed on the plug. However, according to the present invention, on the contrary, the concave portion is formed on the plug and the convex portion is operated. You may form in a member, and you may form both a recessed part and a convex part in an operation member while forming both a recessed part and a convex part in a plug.
(5) In the above embodiment, the switch member is constituted by the terminal fitting. However, according to the present invention, other switch means such as a microswitch can be used as the switch member.
[0038]
(6) In the above embodiment, the displacement angle between the ON posture and the OFF posture of the operation member is 90 °. However, in the present invention, the displacement angle may be smaller than 90 ° or larger than 90 °. It may be an angle. In addition, the time lag of operation of an operation member and operation of a plug can be enlarged, so that this displacement angle is large.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a first embodiment. FIG. 2 is a plan view showing a state in which a plug is fitted to a case and an operation member is displaced to an ON position. FIG. 4 is a cross-sectional view showing a state in which the plug is fitted to the case and the operating member is displaced to the ON position. FIG. 5 is a partial cross-sectional view showing the plug in a half-fitted state. XX sectional view of FIG. 4 [FIG. 7] YY sectional view of FIG. 4 [FIG. 8] XX sectional view of the state with the plug removed [Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Case 14 ... Electrode 16 ... Stopper 18 ... Terminal metal fitting (switch member)
19 ... Return restricting part 21 ... Fitting detecting part 30 ... Plug 34 ... ON posture convex part (positioning means)
35 ... convex part for OFF posture (positioning means)
40 ... Operation member 41 ... Shaft (center axis of rotation of operation member)
42 ... concave portion (positioning means)
46 ... Short-circuit terminal

Claims (6)

A case provided with a pair of electrodes constituting a main circuit and a switch member constituting a relay circuit;
A plug that short-circuits the pair of electrodes by fitting into this case to turn on the main circuit, and turns off the main circuit by detaching from the case;
Displaceable between an ON posture that is provided on the plug and contacts the switch member to turn the relay circuit ON, and an OFF posture that is spaced from the switch member and turns the relay circuit OFF. And an operating member
When both the main circuit and the relay circuit are in an ON state, the operation member is displaced to an OFF posture and the relay circuit is turned OFF before the plug is detached from the case and the main circuit is turned OFF. Which is supposed to be in a state,
The operation member is supported so as to be relatively rotatable with respect to the plug, and a central axis of rotation between the ON posture and the OFF posture of the operation member is set to be substantially the same as a direction in which the plug is detached from the case. it is, a displacement direction from the O N position of the operating member to the OFF position, is set in a direction different from the removing direction from the casing of the plug,
The operation is extended when the operation member is rotated and displaced to the ON posture side in a state where the case extends in a quadrant arc concentric with the rotation center of the operation member and the plug is normally fitted to the case. In the form in which the protrusion on the outer periphery of the member is inserted, and when the operation member is in the ON posture, the operation member and the plug are detached from the case by the protrusion being locked to the stopper. A stopper is provided to restrict displacement in the direction.
The extension end surface of the stopper is allowed to move to the ON position of the operation member when the plug is properly fitted, but interferes with the protrusion of the operation member when the plug is half-fitted. Then , the breaker device is characterized in that it is a fitting detection unit that restricts the operation member from being displaced to the ON posture . The breaker device according to claim 1 , wherein the operation member also serves as a grip for gripping the plug when the plug is detached from the case. In the case, by engaging the said operating member which is displaced in ON position, according to claim 1 or claim, characterized in that the operating member forms a return restricting portion capable regulating to return to the OFF position side The breaker device according to 2 . The plug and the operation member are provided with positioning means capable of restricting the movement of the operation member when the operation member is in at least one of an ON posture and an OFF posture. The breaker device according to any one of claims 1 to 3 . The positioning means is constituted by a recess and a protrusion that are formed on opposite surfaces of the plug and the operation member and can be fitted to each other, and in the process of displacing the operation member, either the plug or the operation member The breaker device according to claim 4, wherein the formed convex portion is elastically slidable with respect to the other. Said switch member constituted by a pair of terminal fittings, wherein the operating member of claims 1 to 5, characterized in that a short-circuit terminal for short-circuiting the pair of terminal fittings when displaced ON position Breaker device in any one.

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