JP2002298704A - Breaker device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a short circuit plug from being pulled out between electrode pairs with a main circuit closed. SOLUTION: When shifting from an operation of an operation part 34 (operation means) for opening a relay (switching means) to a next operation for pulling out the short circuit plug 30 from the electrode 14, it is required to put fingers on a pullout finger putting part 35 from a displacement operation finger putting part 36 so that this device is so constituted that, if there is a time lag from starting the opening operation of the relay to closing the main circuit, the short circuit plug 30 is pulled out after opening the main circuit. The constitution can eliminate the short circuit plug from being pulled out between the electrodes during with the main circuit closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breaker device which opens and closes a main circuit by inserting and removing a short-circuit plug.

[0002]

2. Description of the Related Art As a breaker device in which a main circuit is opened and closed by inserting and removing a short-circuit plug, conventionally, a short-circuit plug is inserted into a pair of electrodes provided in series in the main circuit, thereby connecting between the electrode pairs. There is a structure in which the main circuit is closed by short-circuiting, and a short-circuit plug is pulled out from the electrode pair, so that current cannot flow between the electrode pair and the main circuit is opened.

When a breaker device of this kind is used for opening and closing a power circuit of an electric vehicle, if a short-circuit plug is removed from an electrode pair while the power circuit is energized, an arc is generated between the electrode and the short-circuit plug. Therefore, the following countermeasures have been taken. That is, the lever is provided on the short-circuit plug, and the case has a structure in which a microswitch for operating a relay for opening and closing the power circuit is provided.In general, by inserting the short-circuit plug and lowering the lever to the storage position, Keep the power circuit closed. When opening the power circuit from this state, first raise the lever, and the micro switch that detects the movement of the lever opens the relay to open the power circuit and stop power supply. By pulling the raised lever and pulling out the short-circuit plug, the electrodes become incapable of conducting electricity.

[0004]

In the above-mentioned breaker device, there is a time lag from the start of the opening operation of the relay to the completion of the opening operation and the opening of the main circuit (power circuit). Therefore, in order to avoid the occurrence of an arc, a time longer than the above-mentioned time lag is required between the time when the relay opening operation is started and the time when the operation of pulling out the short-circuit plug for bringing the electrodes into an energized state is performed. Need to be taken.

However, a first operation for raising the lever (that is, an operation for starting the opening operation of the relay), and a second operation for removing the short-circuit plug (that is, a subsequent operation)
(Operation for disabling conduction between the electrodes) can be performed as a series of one-action operations while the finger is hooked on the lever. Are almost the same direction (upward). Therefore, these two operations are performed at a stretch in a very short time. As a result, the short-circuit plug is pulled out from between the electrodes even though the main circuit remains closed before the relay starts to open. There is a possibility that it will end up.

The present invention has been made in view of the above circumstances, and has as its object to prevent a short-circuit plug from being pulled out from between electrode pairs while a main circuit is closed.

[0007]

According to a first aspect of the present invention, the switching means is provided by providing a pair of electrodes in series in a main circuit which is opened and closed by opening and closing operations of the switching means, and inserting and removing a short-circuit plug between the pair of electrodes. And an operating position provided on the short-circuit plug to enable the pull-out operation of the short-circuit plug. An operation means capable of being displaced between a storage position for restricting operation, and detecting that the operation means has been displaced to the storage position, closing the switching means, and setting the operation means to the storage position. A displacement operation detecting means for detecting the displacement in the process of displacing from the operating position side to the switching means and starting the opening operation, and provided in the operating means, A finger grip for displacement operation for displacing the operating means from the storage position to the operation position, and a withdrawal for removing the short-circuit plug from the pair of electrodes provided at a position different from the finger grip for displacement operation in the operation means. In the state where the operation means is in the storage position, the operation of the operation means is in the stowed position, but the operation of the operation means is restricted, while the operation of the operation means is restricted. In a state where the finger is displaced to the operation position, a finger hooking restricting means is provided which allows a finger to be hooked on the finger hook for extraction.

According to a second aspect of the present invention, in the first aspect of the present invention, a direction in which a finger is hooked on the displacement finger hook is different from a direction in which the finger is hooked on the extraction finger hook. And Claim 3
In the invention according to claim 1 or 2, the displacement operation detecting means is provided with a pair of terminal fittings in a case to which the electrode pair is attached, and when the operating means is displaced to a storage position. Closing the switching means by short-circuiting the pair of terminal fittings,
A short-circuit terminal for starting the opening operation of the switching means by releasing the short-circuit between the pair of terminal fittings while being displaced toward the operation position is provided.

The invention according to claim 4 is the invention according to claims 1 to 3.
In any one of the inventions described above, a configuration is provided in which the operation means displaced to the storage position is locked, so that a floating control means is provided for restricting the operation means from moving toward the operation position. According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the operating means displaced to the storage position is locked so that the operating means and the short-circuit plug are removed from the electrode. The structure is provided with a sampling restricting means for restricting displacement.

[0010] The invention of claim 6 is the first to fifth aspects of the present invention.
In any one of the inventions, in a state where the short-circuit plug is properly inserted into the electrode, displacement from the operation position of the operation means to the storage position is allowed, but the short-circuit plug is in an incorrect insertion state. Occasionally, a configuration is provided in which the insertion state detecting means is provided to restrict the operation means from being displaced toward the storage position by interfering with the operation means.

[0011]

Operation and Effect of the Invention [Invention of claim 1] When the short-circuit plug is inserted into the electrode pair and the operating means is displaced to the storage position, the main circuit is closed. From this state, when the operation unit is displaced from the storage position to the operation position by hooking a finger on the displacement operation finger holder, the switching unit starts the opening operation in the middle of the displacement, and when the opening operation is completed, the main unit is opened. The circuit is open. Thereafter, when the finger is replaced with the finger-holding portion for extraction and the short-circuit plug is extracted from the pair of electrodes, the conduction between the pair of electrodes is blocked, but since the main circuit has already been opened by the opening operation of the switching means, No arc is generated between the electrode and the short-circuit plug.

When the operation of the operating means for opening the switching means is shifted to the subsequent operation of extracting the shorting plug from the electrode pair, it is necessary to switch the finger to a different finger hook portion. Even if there is a time lag between the start of the opening operation and the completion of the opening operation and the closing of the main circuit, the removal operation of the shorting plug will be performed after the opening operation is completed and the main circuit is opened. Become. Therefore, there is no possibility that the short-circuit plug is pulled out from between the electrodes even when the main circuit is kept closed.

[0013] [2] Since the direction in which the finger is hooked on the finger-holding portion for displacement operation and the direction in which the finger is hooked on the finger-holding portion for removal are different from each other, the finger-holding portion for removal from the finger-holding portion for displacement operation is used. A large time lag can be ensured between the time when the switching operation of the switching means is started and the time when the short-circuit plug is pulled out. [Invention of claim 3] Since a simple terminal fitting and short-circuit terminal are used as the displacement operation detecting means for opening and closing the switching means, the cost is low as compared with the use of a complicated device such as a micro switch. Can be suppressed.

[Invention of Claim 4] Since the operation means is held in the storage position by the movement restricting means, the switching means does not inadvertently start the opening operation. [Invention of claim 5] Since the extraction restricting means is provided, it is ensured that the short-circuit plug is extracted from the electrode even when the operating means is in the storage position and the main circuit is closed. Is prevented. [Invention of claim 6] Since the insertion state detecting means is provided, the insertion state of the short-circuit plug with respect to the electrode can be detected based on the possibility of displacement of the operating means to the storage position.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Embodiment 1] Hereinafter, an embodiment 1 embodying the present invention with reference to FIGS. 1 to 13. In the breaker device A according to the first embodiment, a pair of electrodes 14 are provided in series in a main circuit (not shown) that is opened and closed by an opening and closing operation of a relay (switching means that is a component of the present invention). By inserting and removing the short-circuit plug 30, it is possible to allow or prevent the conduction between the electrodes 14 independently of the opening / closing operation of the relay.
Note that, in the following description, the diagonally upper right in FIG. 1 is defined as the front in the front-rear direction, and the diagonally lower right in FIG. 1 is defined as the right in the left-right direction.

The case 10 having an open top has a housing space 12 in which a fuse 11 is housed, and a storage space 13 which is long in the left-right direction. In the storage space 13, a pair of electrodes 14 having a vertically elongated plate shape is fixed along both front and rear sides of the support column 15. Further, a pair of front and rear terminal fittings 16 (displacement operation detecting means which is a component of the present invention) is fixed upward at a position on the right side of both electrodes 14 in the storage space 13. This pair of terminal fittings 1
Reference numeral 6 denotes a relay, and both terminal fittings 16
When the short-circuit terminal 42 of the short-circuit plug 30 (displacement operation detecting means, which is a component of the present invention) is fitted from above, the two terminal fittings 16 are short-circuited, and the two terminal fittings 16 are short-circuited.
When the short-circuit terminal 42 is detached from the, the short circuit of the two terminal fittings 16 is released and the main circuit is opened.

Each of the front and rear walls 17F, 17R of the peripheral wall constituting the storage space 13 has a circular bearing hole 18 and a narrower inner diameter than the inner diameter of the bearing hole 18 from both ends thereof. A guide groove 19 (a removal restricting means and an insertion state detecting means, which is a constituent element of the present invention) is provided in a vertical direction (a direction parallel to the direction in which the short-circuit plug 30 is inserted into and removed from the electrode 14) communicating with the upper edges of the walls 17F and 17R. Is formed. Further, at a position on the right side of the bearing hole 18 in the storage space 13, a pair of front and rear elastic locking pieces 20 (the present invention) which rise from the intermediate height between the front and rear walls 17F and 17R and have inward claws at the upper end. (I.e., a floating regulation means), which is a constituent element of (1), is formed along the front wall 17F and the rear wall 17R.

A substantially right half area of the front wall 17F and the rear wall 17R of the storage space 13 is provided with a finger-holding portion 35 for extraction when the operation portion 34 (operation means, which is a component of the present invention) is in the storage position. Is a finger-hook restricting unit 21 (finger-hook restricting means, which is a constituent element of the present invention) that regulates a finger-hung operation with respect to. The right wall 17 of the storage space 13
A cutout portion 22 (finger-hook restricting means, which is a constituent element of the present invention) is formed in S to allow a finger to perform a hooking operation on the finger-holding portion 36 for displacement operation when the operation portion 34 is in the storage position. .

The short-circuit plug 30 includes a plug body 31 made of an insulating resin material, a short-circuit member 41 formed by bending a metal plate, and a short-circuit terminal 42 formed by bending a metal plate.
And is provided. Describing the plug body 31, a pair of front and rear rectangular protection plates 33 extend from both front and rear edges of the substrate portion 32.
3, a short-circuit member 41 is accommodated. Short-circuit member 4
1 is a protective plate 33 from both ends of an arc-shaped connecting portion 41A.
A pair of front and rear elastic contact pieces 41B having a substantially S-shape are extended along the inner surface of the contact piece.

An operating portion 34 protruding on the opposite side to the protective plate portion 33 is formed on the substrate portion 32 so as to be integrally displaceable. The operation unit 34 has a finger hook 35 for extraction and a finger hook 36 for displacement operation. Extraction finger hook 35
Is a configuration in which the pair of rising portions 37 rising from both ends of the substrate portion 32 to the opposite side to the protection plate portion 33 is inserted in parallel with the substrate portion 32 between the rising ends. The extraction finger holder 35 is sized so that, for example, two to three fingers can be hooked simultaneously from the front or the rear thereof. Can be grasped firmly. In addition, the finger grip for displacement operation 36 is provided with a finger grip for removal 35.
Is projected from the one end portion to the opposite side (outside) of the substrate portion 32.
Only the fingertip of one finger can be hooked from a direction orthogonal to the hooking direction of the finger on the extraction finger hook 35 (a direction parallel to the length direction of the extraction finger hook 35).

The plug body 31 is accommodated in the extraction finger holder 35 so as to be located at the base end of one of the rising parts 37 (the side opposite to the side on which the displacement operation finger holder 36 is formed). A portion 38 is formed. Accommodation section 38
Is open toward the outer surface side of the rising portion 37,
In the housing portion 38, a short-circuit terminal 42 constituting a displacement operation detecting means is housed. The short-circuit terminal 42 is formed by extending a pair of front and rear substantially triangular plate-shaped contact portions 42B from a plate-shaped connection portion 42A.
Are inserted into a pair of terminal fittings 16 provided on the case 10. Further, a locked portion 39 to which the elastic locking piece 20 is locked is formed on a side edge of the other rising portion 37 of the extraction finger holding portion 35.

Further, a pair of front and rear shaft portions 40 (removal restricting means and insertion state detecting means, which are components of the present invention) are formed on the outer surfaces of the pair of protective plate portions 33 so as to protrude.
The outer periphery of the shaft portion 40 includes a pair of flat portions 32F in a direction orthogonal to the substrate portion 32 (a direction in which the short-circuit plug 30 is inserted into and removed from the electrode 14), and a pair of arc portions 32S connecting both ends of the flat portions 32F. It is composed of The interval between the pair of flat portions 32F is the same as or slightly smaller than the width of the guide groove 19 of the case 10, and the maximum distance between the pair of arc portions 32S is the guide groove. The dimension is larger than the width of the guide groove 19, and the dimension setting prevents the shaft portion 40 from rotating inside the guide groove 19. In addition, a pair of arc portions 32S
Are formed along a common imaginary circle (not shown), and the diameter of the common imaginary circle is the same as or slightly smaller than the inner diameter of the bearing hole 18. Thereby, the shaft portion 40 can rotate in the bearing hole 18.

Next, the operation of the present embodiment will be described. FIG.
As shown in FIG.
0 is the posture in which the finger hook 36 for the displacement operation faces upward (the shaft 4
0 flat portion 40F is oriented in the vertical direction), the shaft portion 40 is fitted in the guide groove 19 in this posture, and the short-circuit plug 30 is covered with the electrode 14 from above while being guided by the guide groove 19. Plug in. At this time, the operation unit 34 and the short-circuit plug 30 are in the operation position, and as shown in FIG.
The elastic contact portion 41B of the short-circuit member 41 comes into contact with the two electrodes 14 so that the two electrodes 14 can be conducted. However, at this point, the main circuit is still closed (the state where power can be supplied).
It is not.

Thereafter, the operation section 34 is pressed with a finger, and the bearing hole 1 is pressed.
When the short-circuit plug 30 is rotated 90 ° so that the shaft portion 40 is rotated rightward while rotating the shaft portion 40 in the position 8, the operation portion 34 and the short-circuit plug 30 are in the retracted position (see FIGS. 3, 6, 8, and 12). While the short-circuit plug 30 is displaced from the operation position to the storage position, the short-circuit member 41 is in contact with the electrode 14 (electrode 1).
4 is made conductive). The short-circuit plug 30
Is not in the normal insertion state, the shaft portion 40 does not reach the bearing hole 18 and remains in the guide groove 19 as shown in FIG.
Cannot rotate inside 9 Therefore, in this incorrect insertion state, the short-circuit plug 30 cannot be rotated to the storage position. Therefore, in this case, the short-circuit plug 3
It is necessary to perform the operation of inserting 0 again until a normal insertion state is obtained.

In the state of being displaced to the storage position, the short-circuit terminal 4
2 short-circuits the pair of terminal fittings 16, whereby it is detected that the operating section 34 and the short-circuit plug 30 have been displaced to the storage positions, the relay is closed, and the main circuit is closed. In this retracted state, the elastic locking piece 20 is elastically locked to the locked portion 39 of the operating portion 34, so that the operating portion 34 is restrained from floating toward the operating position and is stored. Held in position. Further, in the bearing hole 18, the shaft portion 40 is oriented so that the flat portion 40 </ b> F is orthogonal to the guide groove 19. In this state, as shown in FIG. Cannot enter the narrow guide groove 19, the operation unit 34
In addition, the upward displacement of the short-circuit plug 30, that is, the displacement in the direction in which the short-circuit plug 30 is extracted from the electrode 14, is restricted.

Next, a procedure for storing the shorting plug 30 in the case 10 and opening the main circuit from a state where the main circuit is closed will be described. In the retracted state, as shown in FIG. 3, the extraction finger-holding portion 35 is completely housed between the front and rear walls 17F and 17R of the storage space 13 and the finger-holding restriction portions 21, and the finger is inserted inside the extraction finger-holding portion 35. Can not be inserted. On the other hand, the finger hook 36 for displacement operation protrudes outside from the notch 22 of the right wall 17S, and is in a state where a finger can be hooked.

In view of the above, first, the displacement operation finger hook 3
6 with a fingertip, and the elastic locking piece 2
The shorting plug 30 is displaced upward by applying an upward operating force exceeding the locking force between the zero and the locked portion 39. At this time, since the shaft portion 40 only rotates within the bearing hole 18 and does not displace to the guide groove 19, the short-circuit plug 30 rotates around the bearing hole 18 as a fulcrum. When the displacement of the short-circuit plug 30 is started, immediately after the start (before the short-circuit plug 30 reaches the operating position), the short-circuit terminal 42
Are separated from the pair of terminal fittings 16, the short circuit of both terminal fittings 16 is released, and it is detected that the short-circuit plug 30 has started to be displaced to the operation position side. By this detection, the relay is excited to start an opening operation for opening the main circuit, but there is a time lag from the start to the completion of the opening operation, and the main circuit is opened when the opening operation is completed. At this time, the electrode 14 is kept conductive by the short-circuit member 41.

Thereafter, when the turning operation of the short-circuit plug 30 is further continued, the short-circuit plug 30 and the operating portion 34 reach the operating position, and the shaft portion 40 in the bearing hole 18 can move to the guide groove 19. At the same time, the extraction finger holding portion 35 is exposed upward from the storage space 13 so that the finger can be hooked. Then, the finger that has been hooked on the displacement operation finger hook 36 is released, the finger is hooked on the extraction finger hook 35, and the operation unit 34 is grasped. If the operation unit 34 is lifted in this state, the short-circuit plug 30 is pulled out of the electrode 14 and the electrode 1
4 cannot be conducted. When the short-circuit plug 30 is removed from the electrode 14, the main circuit is already opened by the opening operation of the relay, so that no arc is generated between the electrode 14 and the short-circuit member 41.

As described above, in the present embodiment, there is a time lag between the start of the opening operation of the relay and the completion of the opening operation and the closing of the main circuit. When the operation of raising the operation unit 34 to shift from the operation of raising the operation unit 34 to the subsequent operation of lifting the operation unit 34 upward to extract the short-circuit plug 30 from the electrode 14, the extraction finger hook provided at a different position from the displacement operation finger hook 36. It is necessary to change the part 35 with a finger. Therefore, even if there is a time lag between the start of the opening operation of the relay and the closing of the main circuit, the withdrawal operation of the short-circuit plug 30 is performed after the opening operation is completed and the main circuit is opened. Become. Therefore, there is no possibility that the short-circuit plug 30 is pulled out from between the electrodes 14 even though the main circuit remains closed.

In addition, since the direction in which the finger is hooked on the displacement finger hook 36 and the direction in which the finger is hooked on the extraction finger hook 35 are different from each other, the direction from the displacement operation finger hook 36 to the extraction finger hook 35 is different. It is possible to secure a large time lag at the time of changing fingers, and furthermore, a large time lag from when the relay opening operation is started to when the short-circuit plug 30 is pulled out. Further, since the displacement operation detecting means for opening and closing the relay is constituted by the terminal fitting 16 and the short-circuit terminal 42 in a simple form, the cost is lower than using a complicated device such as a microswitch. It is suppressed.

Further, an elastic locking piece 2 as a movement restricting means is provided.
Since the operation unit 34 and the short-circuit plug 30 are held in the storage position by 0, it is possible to prevent the short-circuit plug 30 from inadvertently moving to the operation position side and opening the relay. I have. A non-circular shaft portion 40;
Since the extraction restricting means including the guide groove 19 which is narrower than the bearing hole 18 serving as the center of rotation of the short-circuit plug 30 is provided, the operation circuit 34 is in the storage position and the main circuit is closed. Nevertheless, it is reliably prevented that the short-circuit plug 30 is pulled out from the electrode 14.

Further, since the insertion state detecting means including the non-circular shaft portion 40 and the guide groove 19 for regulating the rotation of the shaft portion 40 is provided, the operation portion 34 and the short-circuit plug 30 at the operation position are moved to the storage position. The insertion state of the short-circuit plug 30 with respect to the electrode 14 can be detected based on whether or not the displacement is possible. Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. Similarly to the breaker device A according to the first embodiment, the breaker device B according to the second embodiment also includes a pair of electrodes connected to a main circuit (not shown) that is opened and closed by opening and closing operations of a relay (switching means that is a constituent element of the present invention). (Not shown) are provided in series, and by connecting and disconnecting the short-circuit plug 60 to and from the pair of electrodes, the current between the pair of electrodes can be allowed or blocked independently of the opening / closing operation of the relay. In the following description, in the front-rear direction, the diagonally upper right in FIG.
Regarding the left-right direction, the diagonally lower right in FIG.

The case 50 having an open upper surface has a fuse accommodating space 51 and a storage space 52. In the storage space 52, a pair of front and rear electrodes (in the form of a column along the support column 53) as in the first embodiment. (Not shown) is accommodated. A micro switch 5 is provided on the outer surface of the right wall of the fuse accommodating space 51.
4 (displacement operation detecting means, which is a component of the present invention) is fixed. The micro switch 54 has a fixed contact 54A
And the storage space 52 located in front of the fixed contact 54A.
And a resilient contact piece 54B facing the inside. When the elastic contact piece 54B is pushed by the lever 63 (operating means which is a constituent element of the present invention) and comes into contact with the fixed contact, the microswitch 54 closes the relay, and when the elastic contact piece is separated from the fixed contact, the microswitch 54 is turned on. 54 causes the relay to start the opening operation.

The front wall of the storage space 52 is provided with a finger-hook restricting portion 55 (finger-hook restricting means, which is a constituent feature of the present invention) for restricting the hooking operation of the finger on the extraction finger-hook portion 64 when the lever 63 is in the storage position. The front wall has a notch 56 (which is a constituent feature of the present invention) that allows a finger to be hooked on the displacement finger holder 67 when the lever 63 is in the storage position. Means) are formed. Further, the storage space 52 has
3 and the front wall (finger-holding restricting portion 55), and with the lever 63 in the retracted position, the extraction finger-holding portion 64
Spacer portion 57 positioned so as to fill the gap between wire and short-circuit plug 60 (finger-hook restricting means which is a constituent element of the present invention)
Are formed to protrude.

The short-circuit plug 60 is formed by fixing a short-circuit member 62 having the same form as that of the first embodiment inside a box-shaped plug body 61 made of an insulating resin having an open lower surface.
The short-circuit plug 60 is supported so as to be rotatable between an operating position where the lever 63 stands up and a storage position where the lever 63 is tilted forward. The lever 63 is formed by extending a pair of legs 65 from both ends of a stripping finger hook 64 that is elongated in the left-right direction. The lever 63 rotates about a shaft 66 provided in the middle of the legs 65 as a fulcrum. The finger of the hand inserted in the space surrounded by the short-circuit plug 60, the two legs 65, and the finger-holding portion 64 for extraction can be hooked on the finger-holding portion 64 for extraction,
By putting a finger on the finger-holding portion 64 for extraction, the lever 6
3 can be grasped firmly. In addition, the finger-holding portion 64 for extraction has a finger-holding portion 67 for displacement operation protruding outward from the center in the length direction on the outer surface thereof. Only the fingertip of one finger can be hooked on the displacement operation finger hook 67. Further, the end of one leg 65 opposite to the finger hook 64 for extraction is connected to the elastic contact piece 5 of the microswitch 54.
The pressing portion 68 is capable of abutting the 4B.

Next, the operation of the second embodiment will be described. As shown in FIG. 14, the lever 63 is moved to the operating position (standing posture).
The short-circuit plug 60 in the state described above is inserted into the electrode in the storage space 52 from above, whereby the short-circuit member 62 comes into contact with the two electrodes to make the two electrodes conductive (FIG. 1).
5). However, at this time, the main circuit is not yet in a closed state (an energizable state). Thereafter, the lever 63 in the operation position is pressed with a finger, and the lever 63 is tilted forward.
Rotate by 0 ° to displace to the storage position (see FIG. 16). While the lever 63 is displaced from the operating position to the retracted position, the short-circuit plug 60 keeps the electrodes conductive. When displaced to the retracted position, the pressing portion 68 of the lever 63 pushes the elastic contact piece 54B to contact the fixed contact 54A, whereby the microswitch 54
Is detected to be displaced to the storage position, the relay is closed, and the main circuit is closed.

Next, a procedure for opening the main circuit from the state where the main circuit is closed will be described. In the stored state, FIG.
As shown in FIG. 6, the extraction finger hanging portion 64 fits into the gap between the finger hanging regulating portion 55 (front wall) and the spacer portion 57. In other words, the spacer portion 57 fills the space between the extraction finger hook portion 64 and the plug main body 61. Therefore, a finger cannot be hooked from the inside (the rear side when the lever 63 is in the storage position) or from the outside with respect to the finger-pulling portion 64 for extraction. On the other hand, since the displacement operation finger hook 67 protrudes outside from the cutout 56 of the finger hook regulation unit 55, the finger can be hooked.

Therefore, first, the finger grip portion 6 for the displacement operation is provided.
7. Hook your fingertip from below and move the lever 63
Is displaced upward (toward the operation position side). At this time, the short-circuit plug 60 is kept inserted into the electrode. When the displacement of the lever 63 is started, immediately after the start (before the lever 63 reaches the operating position), the lever 6 is moved.
The third pressing portion 68 is displaced forward so as to retract from the elastic contact piece 54B, and the elastic contact piece 54B is fixed to the fixed contact 54A.
, Whereby the micro switch 54 detects that the lever 63 has started to be displaced toward the operation position. By this detection, the relay starts an opening operation for opening the main circuit, and thereafter the opening operation is completed and the main circuit is opened. At this time, the electrodes are kept conductive by the short-circuit member 62.

Thereafter, the operation of the lever 63 with a finger placed on the finger-operating portion 67 for displacement operation is continued, and the lever 63 is displaced to the operation position. In this state, as shown in FIG. 15, the finger hook 64 for extraction comes out of the gap between the spacer portion 57 and the finger hook regulation portion 55 upward, so that the finger is hooked on the finger hook 64 for extraction from the front or the rear. Is possible. Then, the finger hooked on the finger hook part 67 for displacement operation is released, and the finger hook part 64 for extraction is released.
, And grab the lever 63. If the lever 63 is lifted in this state, the short-circuit plug 60 is pulled out of the electrode, and the state between the electrodes cannot be conducted. When the short-circuit plug 60 is pulled out of the electrode, the main circuit has already been opened by the opening operation of the relay, so that no arc is generated between the electrode and the short-circuit member 62.

As described above, in the second embodiment, there is a time lag between the start of the opening operation of the relay and the closing of the main circuit. However, in order to start the opening operation of the relay, the lever 63 is operated. When shifting from the raising operation to the subsequent lifting operation for extracting the shorting plug 60 from the electrode, it is necessary to replace the finger from the displacement operation finger hook 67 to the extraction finger hook 64 provided at a different position from this. Therefore, even if there is a time lag between the start of the opening operation of the relay and the closing of the main circuit, the extraction operation of the short-circuit plug 60 is performed after the opening operation is completed and the main circuit is opened. Become like Therefore,
There is no possibility that the short-circuit plug 60 will be pulled out from between the electrodes even though the main circuit remains closed.

[Other Embodiments] The present invention is not limited to the embodiment described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) In the above embodiment, the operation means is rotated between the storage position and the operation position. However, according to the present invention, the form of displacement of the operation means is not limited to rotation, but may be linear parallel. It can also be a movement or a swing displacement.

(2) In this embodiment, the finger-hook restricting means is provided on the case to which the electrode is fixed. However, according to the present invention, the finger-hook restricting means may be provided on the short-circuit plug. (3) Although the terminal fitting and the short-circuit terminal for short-circuiting the terminal fitting are used as the displacement operation detecting means in the first embodiment, other means such as a microswitch may be used instead. (4) Although the microswitch is used as the displacement operation detecting means in the second embodiment, a terminal fitting as in the first embodiment and a short-circuit terminal for short-circuiting the terminal fitting may be used instead.

(5) In the above embodiment, the displacement angle between the storage position of the operation means and the operation position is 90 °. However, in the present invention, the displacement angle may be smaller than 90 °, and may be 90 °. A larger angle may be used. (6) In the first embodiment in which the operating means and the short-circuit plug are integrated, the pair of electrodes may have an arc shape concentric with the rotation center of the operating means and the short-circuit plug. With this configuration, even if the short-circuit member on the short-circuit plug side is small, the short-circuit state of the pair of electrodes can be maintained during rotation.

(7) In the above embodiment, the fuse is fixed to the case. However, according to the present invention, the fuse may be attached to the short-circuit plug. (8) In the above embodiment, the relay that starts the opening operation by excitation is used as the switching means. However, according to the present invention, other means such as a transistor can be used.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a short-circuit plug is removed from an electrode in a first embodiment.

FIG. 2 is a perspective view showing a state where a short-circuit plug is inserted into an electrode.

FIG. 3 is a perspective view showing a state where an operation unit and a short-circuit plug are displaced to a storage position.

FIG. 4 is a perspective view of a terminal fitting and a short-circuit terminal constituting a displacement detecting operation detecting means.

FIG. 5 is a plan view showing a state where a short-circuit plug is inserted into an electrode.

FIG. 6 is a plan view showing a state in which an operation unit and a short-circuit plug are displaced to a storage position.

FIG. 7 is a cross-sectional view showing a state where a short-circuit plug is inserted into an electrode.

FIG. 8 is a cross-sectional view showing a state where the operation unit and the short-circuit plug are displaced to the storage position.

FIG. 9 is a longitudinal sectional view showing a state where a short-circuit plug is inserted into an electrode.

FIG. 10 is a cross-sectional view showing a detection structure of a displacement operation detection unit.

FIG. 11 is a side view showing a state where the operation unit and the short-circuit plug are in the operation position.

FIG. 12 is a side view showing a state in which the operation unit and the short-circuit plug are in the storage position.

FIG. 13 is a side view showing a state where the short-circuit plug is incorrectly inserted.

FIG. 14 is a perspective view showing a state in which a short-circuit plug is removed from an electrode in the second embodiment.

FIG. 15 is a perspective view showing a state where a short-circuit plug is inserted into an electrode.

FIG. 16 is a perspective view showing a state in which a lever is displaced to an operation position.

[Explanation of symbols]

A: Breaker device 10: Case 14: Electrode 16: Terminal fitting (displacement operation detecting means) 19: Guide groove (extraction restricting means, insertion state detecting means) 20: Elastic locking piece (movement restricting means) 21: Finger hooking restricting section (Finger-holding control means) 22 Notch (finger-holding control means) 30 ... Short-circuit plug 34 ... Operation part (operation means) 35 ... Removal finger-holding part 36 ... Displacement operation finger-holding part 40 ... Shaft part (removal control means, insertion state) Detection means) 42 Short-circuit terminal (displacement operation detection means) B ... Breaker device 60 ... Short-circuit plug 63 ... Lever (operation means) 54 ... Micro switch (displacement operation detection means) 67 ... Displacement operation finger hook part 64 ... Extraction finger hook Part 55: Finger-hook restriction part (finger-hook restriction means) 56 ... Notch part (finger-hook restriction means) 57 ... Spacer part (finger-hook restriction means) 50: Case

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kazunori Chikada 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi Prefecture Inside Auto Network Engineering Laboratory Co., Ltd. (72) Inventor Hiroki Hirai 1-Kikuzumi, Minami-ku, Nagoya-shi, Aichi Prefecture 7-10 Inside Auto Network Engineering Laboratory Co., Ltd. (72) Inventor Mio Mizutani 7-10 Kikuzumi Minami-ku, Nagoya City, Aichi Prefecture Inside Auto Network Engineering Laboratory Co., Ltd.

Claims (6)

[Claims] 1. A pair of electrodes are provided in series in a main circuit which is opened / closed by opening / closing operation of a switching means, and a short-circuit plug is inserted / removed into / from the electrode pair, thereby independently of the opening / closing operation of the switching means. Between the operating position that is provided on the short-circuit plug and that enables the removal operation of the short-circuit plug and the storage position that restricts the removal operation. Operating means capable of being displaced; and detecting that the operating means has been displaced to the storage position, closing the switching means, and displacing the operation means in the process of being displaced from the storage position to the operation position side. A displacement operation detecting means for detecting opening and causing the switching means to start an opening operation; A displacement operation finger hook for displacing; a displacement finger hook for removing the short-circuit plug from the electrode pair, provided at a different position from the displacement operation finger hook in the operation means; In the storage position, the finger hooking operation on the displacement operation finger hooking portion is allowed, but the finger hooking operation on the extraction finger hooking portion is restricted, and when the operation means is displaced to the operation position, the extraction is performed. And a finger hooking restricting means for allowing a finger to be hooked on the finger hooking section. 2. The breaker device according to claim 1, wherein a direction in which the finger is hooked on the finger-holding portion for displacement operation and a direction in which the finger is hooked on the finger-holding portion for removal are different from each other. 3. The displacement operation detecting means includes a pair of terminal fittings provided on a case to which the electrode pair is attached, and the operating means short-circuits the pair of terminal fittings when the pair of terminal fittings is displaced to a storage position. And a short-circuit terminal for starting the opening operation of the switching means by releasing the short-circuit of the pair of terminal fittings while being displaced toward the operation position. The breaker device according to claim 1 or claim 2, wherein 4. A floating control means for locking the operating means displaced to the storage position to thereby prevent the operating means from floating toward the operating position. Item 6. The breaker device according to any one of Items 3. 5. A removal restricting means for locking the operation means displaced to the storage position, thereby restricting the operation means and the short-circuit plug from being displaced in a direction in which the short-circuit plug is removed from the electrode. The breaker device according to any one of claims 1 to 4, wherein 6. When the short-circuit plug is properly inserted into the electrode, displacement from the operation position of the operating means to the storage position is permitted. The breaker device according to any one of claims 1 to 5, further comprising a plug-in state detecting means for interfering with the operating means and restricting the operating means from being displaced toward the storage position.