JP6654859B2 - Bus duct branching device - Google Patents

Description

  The present invention relates to a branch device for a bus duct, and more particularly to a branch device for a bus duct that is attached to a bus duct that forms an electric trunk line and that can branch from the electric trunk line.

  Conventionally, when branching from a bus duct used as an electric trunk line in a high-rise building or factory, a branching contact is inserted from one end in the width direction of this conductor into a housing for accommodating a strip-shaped conductor. In general, branching is performed by bringing a side surface of a conductor into contact with a branching contact.

  However, for example, when attaching a branching device having a branching contact to a bus duct, when the mounting of the branching device to the bus duct housing is incomplete and the branching contact is inserted halfway into the housing. In this case, there is a possibility that the contact area between the contact and the conductor of the bus duct is insufficient, and good branching cannot be performed.

  In order to avoid such a situation, it is determined whether the contact for branching is sufficiently inserted into the housing, that is, whether the branching device having the contact for branching is securely attached to the housing of the bus duct. Patent Documents 1 and 2 disclose a technique for confirming whether or not the above is true.

  Specifically, Patent Literature 1 discloses that a bus duct housing a three-phase strip-shaped conductor in a bus duct main body (housing) having a substantially rectangular cross section when viewed from one end in the width direction of the strip-shaped conductor. There is disclosed a plug-in device (branching device) configured as a box having a clip-like contact inserted into the inside and holding the strip-shaped conductor.

  In this plug-in device, a proximal end is housed in a box body of the plug-in device, and a distal end is urged from the box body to the outside of the box body to protrude therefrom and to be displayed between clip-like current branching contacts ( When the contact is inserted into the housing and sandwiches the strip-shaped conductor, the tip of the rod-shaped body contacts the widthwise end of the strip-shaped conductor. Then, the rod-shaped body is pushed back into the box of the branching device against the urging force. Therefore, by confirming the amount of pushing back of the display rod into the box, the operator can grasp that the plug-in device is securely attached to the bus duct main body.

  Patent Literature 2 discloses a plug-in device attached to a plug-in hole of a bus duct housing that stores a plurality of plate-shaped conductors. As shown in FIG. 12 (corresponding to FIG. 5 of Patent Document 2), this plug-in device includes an insertion blade 254 to which a probe member 252 is attached, and a plate-shaped conductor (a bus duct main body-side conductor) in a bus duct housing. And a clip-shaped contact 258 capable of holding 256.

  With the contact 258 sandwiching the bus duct body-side conductor 256, the shaft body 260 constituting the probe member 252 abuts on the upper end of the bus duct body-side conductor 256 and is lifted upward (in the direction of the arrow 900). By projecting from above the insertion blade 254, the marking 260a written on the shaft main body 260 is also exposed above the insertion blade 254.

  Thereby, the operator can grasp that the plug-in device is securely attached to the plug-in hole.

JP-A-63-179676 JP 2010-239673 A

  However, according to the plug-in device of Patent Literature 1, since the display rod is present in the box body of the plug-in device, the display bar is checked to confirm that the plug-in device is securely attached to the bus duct body. In order to grasp it, it is necessary to visually check the inside of the box of the plug-in device.

  Further, when attaching the plug-in device to the conducting bus duct, performing the work with the box of the plug-in device opened opens a current-carrying part in the box, which involves a danger in the work.

  In addition, for a bus duct already installed in a high-rise building, etc. to which a plug-in device has been attached, when checking whether the plug-in device is properly attached to the bus duct body, the box The operation of opening the box and checking the display bar occurs every time the inspection is performed.

  Also in Patent Document 2, since the probe member is present in the plug-in device, the plug-in device is used to confirm whether the plug-in device is securely attached to the plug-in hole, as in Patent Document 1. It is necessary to visually check the inside of the device, and it has the same problem as that described in Patent Document 1.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a branching device for a bus duct that enables a safe branching operation of a bus duct and that can easily confirm that the bus duct is securely attached to the bus duct. Is to provide.

According to the first aspect of the present invention, there is provided a box body including a branch conductor electrically connected to a conductor of a bus duct, and an urging force generated by an operation of attaching the box body to the bus duct. A displacement member whose relative position with respect to the box changes, and a branching device for a bus duct having the displacement member, wherein the displacement member moves from the outside of the box with the change in the relative position of the displacement member. Characterized by having a display member whose visual state changes.

  According to this configuration, the relative position of the displacement member with respect to the box changes due to the mounting operation of the box including the branching conductor to the bus duct, and the display is performed according to the change in the relative position of the display member with respect to the box. The member moves, and the visibility of the display member from outside the box changes.

  Therefore, the visibility of the display member in the state where the box body containing the branching conductor is properly attached to the bus duct is checked in advance, and when the box body is actually attached to the bus duct, the display member in the state where the display member is properly attached to the bus duct is confirmed. By confirming that the visual recognition state is the same as the visual recognition state, it is possible to determine from the outside of the box that the branching device is in the state of being properly attached to the bus duct.

  Therefore, it is not necessary to open the box when branching from the electric trunk line, and the branching operation of the bus duct can be performed safely even in the energized state.

  In addition, since it is not necessary to open the box when branching from the electric trunk line, by checking the visibility of the display member from the outside of the box, the already installed bus duct can be attached to the bus duct of the branch device of the bus duct. Inspection of the state can be easily performed without opening the box.

  According to a second aspect of the present invention, in the branching device for a bus duct according to the first aspect, the change in the visibility of the display member from outside the box is a state in which the display member is exposed outside the box. From the state housed inside to the state housed inside or from the state housed inside to the state exposed to the outside.

  According to this configuration, the relative position of the displacement member with respect to the box body changes by the mounting operation of the box body containing the branching conductor to the bus duct, and the display member changes along with the change in the relative position of the displacement member. The display member exposed to the outside or initially exposed to the outside of the box is stored in the inside of the box, so that the state of the proper mounting position of the branching device on the bus duct is indicated and can be visually recognized from outside the box. Is displayed.

  Therefore, it is not necessary to open the box when branching from the electric trunk line, and the branching operation of the bus duct can be performed safely even in the energized state.

  In addition, since it is not necessary to open the box when branching from the electric trunk line, the branching operation becomes easier, and the display member is exposed to the outside of the box or the display that was initially exposed. Since the members are housed inside the box, it is possible to easily check the state of attachment of the bus duct branching device to the bus duct for the already laid bus duct without opening the box. .

  According to a third aspect of the present invention, in the branching device for a bus duct according to the first or second aspect, the displacement member urges the inside of the box to the outside of the box on a mounting surface of the box to the bus duct. The displacement of the relative position of the displacement member is caused by a part of the displacement member being pressed against the housing of the bus duct, whereby a part of the displacement member is opposed to the urging force. Characterized in that the operation is pushed back to

  According to this configuration, since a part of the displacement member projects from the inside of the box to the outside of the box on the mounting surface of the bus duct of the box, the mounting operation of the box to the bus duct and a part of the bus duct of the displacement member Can be simultaneously pressed into the housing, and the configuration is more workable.

According to a fourth aspect of the present invention, in the branching device for a bus duct according to any one of the first to third aspects , the movement of the display member outside the box body includes attaching the box body to the bus duct. The process is performed outside the box from a plane substantially perpendicular to the plane.

  According to this configuration, the display member moves to the outside of the box body in a plane substantially perpendicular to the mounting surface to the bus duct at the regular mounting position of the branch device of the bus duct to the bus duct, or becomes exposed. The display member that is initially exposed on a surface substantially orthogonal to the mounting surface is stored inside the box. In general, when viewing the branching device attached to the bus duct, it is often the case that the device is viewed substantially perpendicularly to the mounting surface to the bus duct. Therefore, according to this configuration, the display member is substantially perpendicular to the viewing direction. The display member is exposed from the box, and it is easy to check the state of exposure of the display member to the outside of the box.

  According to a fifth aspect of the present invention, in the branching device for a bus duct according to the fourth aspect, the movement of the display member is moved based on an operation of pushing the displacement member back into the box body. The display member, which has been projected to the outside from the substantially orthogonal surface, is housed inside, or the display member, which is housed inside the box, projects outside and is visible from the outside of the box. It is characterized by being performed by doing.

  According to this configuration, the display member protrudes from the inside of the box to the outside of the box, or the display member that initially protrudes to the outside of the box is stored in the inside of the box. It is possible to confirm the state of the proper attachment position of the device to the bus duct.

  According to a sixth aspect of the present invention, in the branching device for a bus duct according to any one of the first to fifth aspects, the displacement members are two counter electrodes arranged at a predetermined interval in the displacement operation direction. And the display member also has a magnet, and the movement of the display member is caused by a push-back operation of the displacement member against the urging force of the displacement member into the box body. Characterized by a change in the magnetic field around the magnet.

  According to this configuration, for example, the magnetic field around the magnet of the display member that has been attracted to one magnet of the displacement member changes to a magnetic field that repels the other magnet of the displacement member by pushing back the displacement member, or The magnetic field around the magnet of the display member, which has repelled the other magnet of the displacement member, changes to a magnetic field that attracts one magnet of the displacement member by pushing back the displacement member.

  Accordingly, for example, the displacement member is disposed between the displacement operation direction position of the displacement member and the display member in the projecting direction position in a state where the pushback of the displacement member is completed (that is, the branching device of the bus duct is at a regular attachment position to the bus duct). By adjusting the position of the magnet, it is possible to selectively change the magnetic field of the magnet of the display member when the displacement member is completely pushed back, to selectively project the display member, or to house the display member inside the box. It becomes possible.

  According to a seventh aspect of the present invention, in the branch device for a bus duct according to any one of the first to fifth aspects, the display member is provided on a side surface of the displacement member in a direction in which the display member protrudes outside the box body. An elastic projection that gradually increases toward the outside is provided, and the movement of the display member moves to the outside of the box body by abutting on the elastic projection of the display member when the displacement member is pushed back into the box body. The inside of the box body due to the movement in the protruding direction or the separation of the display member, which abuts on the elastic projection and protrudes outside the box body, from the elastic projection due to the displacement member being pushed back into the box body. It is characterized in that it is a movement in the storage direction to the storage.

  According to this configuration, the display member slides on the elastic projection as the displacement member is pushed back, and the display member moves in the direction in which the display member protrudes outside the box or the direction in which it is stored in the box.

  At this time, when the display member protrudes, the elastic projection that comes into contact with the display member shows a behavior of repelling at a stage of being elastically deformed. Therefore, by adjusting the shape and elastic coefficient of the elastic projection, for example, it is possible to adopt a configuration in which the display member is selectively projected to the outside of the box body in a state where the displacement member has been pushed back.

  The invention according to claim 8 is the branching device for a bus duct according to any one of claims 1 to 7, wherein the moving distance of the display member is the displacement member at the start of the movement of the display member. Is longer than the movement distance from the position to the position of the displacement member at the end of the movement of the display member.

  According to this configuration, the moving distance of the display member can be made larger than the moving distance of the displacement member. Therefore, even when the moving distance of the displacement member is small, the moving distance of the display member is made large. Thus, the visibility of the display member can be improved.

  According to a ninth aspect of the present invention, in the branching device for a bus duct according to any one of the first to eighth aspects, a fixing bracket for fixing the box to the housing of the bus duct swings on the box. Possible and normally, the display member is attached so as to cover a through hole that allows the display member to protrude outside the box body or to be housed inside the box body, and the through hole covers the box body. It is characterized in that it can be visually recognized by the swinging operation of the fixing bracket for fixing to the housing of the bus duct.

  According to this configuration, the through-hole that allows the display member to protrude outside the box body or to be housed inside the box body is in a normal state, that is, before the branching device is attached to the bus duct, it is covered by the fixing bracket. Since the display member inserted through the through-hole is protected by the fixing bracket, it is possible to prevent deformation or the like due to external force. In addition, since the through hole becomes visible when the fixing bracket is swung to fix the box to the housing of the bus duct, attention of an operator fixing the fixing bracket is given to the display member inserted through the through hole. It can be attracted, which leads to prevention of forgetting to confirm the display member at the time of work.

  According to the present invention, the relative position of the displacement member with respect to the box body changes against the urging force in the state where the branching device is properly attached to the bus duct, and the display member moves along with this change to move the display member box. The state of visibility from outside the body changes.

  Therefore, the visibility of the display member in the state where the box body containing the branching conductor is properly attached to the bus duct is checked in advance, and when the box body is actually attached to the bus duct, the display member in the state where the display member is properly attached to the bus duct is confirmed. By confirming that the display state is the same as the visual recognition state, it is possible to determine from the outside of the box that the branching device is in the state of being properly attached to the bus duct.

  Therefore, it is not necessary to open the box when branching from the bus duct, and even when the power is on, the branching operation of the bus duct can be performed safely, and the branching operation itself is facilitated, and the already laid branch is laid. With respect to the bus duct, the work of checking the attachment state of the branch device of the bus duct to the bus duct can be easily performed.

FIG. 2 is a side view showing the branching device 10 according to the first embodiment of the present invention. FIG. 2 is an enlarged longitudinal sectional view of a portion A in FIG. 1. FIG. 3A is a plan view of a bus duct 100 to which the branching device 10 according to the present embodiment is attached, FIG. 3B is a side view, and FIG. 3C is a cross-sectional view taken along the line IIIc-IIIc of FIG. (A) A side view showing a state where the branching device 10 according to the present embodiment is arranged above the bus duct 100, and (b) a state where the locking member 26 of the branching device 10 is locked in the locking hole 142b of the bus duct 100. (C) is a side view showing a state where the branching device 10 is attached to the bus duct 100 by rotating, and (d) is a side view showing a state where the branching device 10 is attached to the bus duct 100. FIG. 5 is an enlarged view of a portion B in FIG. 4, (a) a partially enlarged omitted view showing a state in which a locking member 26 is locked in a locking hole 142 b, and (b) one end 55 a of a displacement member 55 is connected to an upper and lower plate. , A partially enlarged omitted view showing a state in which the displacement member 55 starts to be pushed back against the urging force of the spring member 52, and FIG. 4 is a partially enlarged and omitted view showing a state of a regular attachment position to the bus duct 100. (A) A schematic front view showing the normal mounting position state display mechanism 50 according to the present embodiment, (b-1) a schematic side view, and (b-2) a normal mounting position state when the display member 60 starts operating. It is a side surface schematic diagram which shows the display mechanism 50, and (b-3) The side surface schematic diagram which shows the normal attachment position state display mechanism 50 when the display member 60 protrudes from the box body 12. FIG. (A) A schematic front view, (b-1) a schematic side view, and (b-2) a display member 60 of a modification of the first embodiment of the present invention, showing a regular mounting position display mechanism 180 according to a modification of the first embodiment of the present invention. FIG. 9 is a schematic side view showing a normal mounting position state display mechanism 180 when the display member 60 is mounted, and FIG. 10B is a schematic side view showing the normal installation position state display mechanism 180 when the display member 60 is housed inside the box 12. . (A) A main part enlarged longitudinal sectional view showing a normal mounting position state display mechanism 80 according to the second embodiment of the present invention. (B) The normal mounting position state display mechanism 80 when the display member 84 starts operating. It is a principal part enlarged longitudinal cross-sectional view shown, and (c) a principal part enlarged longitudinal sectional view showing the normal attachment position state display mechanism 80 when the display member 84 protrudes from the box 12. (A) A main part enlarged longitudinal sectional view showing a normal attachment position state display mechanism 210 according to a modification of the second embodiment of the present invention. (B) A normal attachment position state display when the display member 84 starts operating. FIG. 9 is an enlarged vertical sectional view of a main part showing a mechanism 210, and (c) an enlarged vertical sectional view of a main part showing a regular mounting position state display mechanism 210 when a display member 84 protrudes from the box 12. (A) A front view showing a state in which the branching device 160 according to the modification is arranged above the air-insulated bus duct 200, (b) a front view showing a state in which the branching device 160 is being mounted on the air-insulated bus duct 200, and (c). FIG. 7 is a front view showing a state where the branching device 160 is properly attached to the air-insulated bus duct 200. (A) A front view and a side view showing a first modification of the display member 60, (b) a front view and a side view showing a second modification of the display member 60, and (c) a third modification of the display member 60. FIG. It is a figure for explaining the conventional check mechanism of attachment of the plug-in device to the plug-in hole of the bus duct housing.

  Hereinafter, a branch device (hereinafter, simply referred to as a branch device) of a bus duct according to the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments according to the present invention, and each embodiment is partially combined. The present invention can be applied within the scope of the present invention, such as deleting unnecessary portions.

(1st Embodiment)
1 to 6 show a branching device 10 according to a first embodiment of the present invention, FIG. 1 is a side view of the branching device 10 according to the present embodiment, and FIG. 2 is an enlarged view of a portion A in FIG. FIG. 3 is a view illustrating a bus duct 100 to which the branching device 10 is attached, FIG. 4 is a diagram illustrating an operation of attaching the branching device 10 to the bus duct 100, and FIG. 5 is a diagram illustrating operations of the displacement member 55 and the display member 60. FIG. 6 is a schematic diagram for explaining the operation of the regular mounting position state display mechanism 50.

  As shown in FIG. 1, a branching device 10 is a device that is attached to a bus duct 100 (described later) constituting an electric trunk line and enables branching, and includes a box body 12 that includes a branching conductor for branching. Have.

  The box body 12 has a basic configuration of a substantially rectangular parallelepiped, and a front wall 16, a rear wall 18, which is a peripheral wall, and opposing side walls 20, 22 are erected from a bottom surface (an attachment surface of a bus duct 100 to a housing to be described later). , An openable / closable lid 24 is provided on the upper surface.

  Locking members 26, 26 which are inserted into locking holes 142 b, which will be described later, of the bus duct 100 and lock the box body 12 with the bus duct 100 are provided at positions near the front walls 16 on both sides 20, 22 of the bottom surface 14, respectively. In the vicinity of the rear wall 18 of the bottom surface 14 near the side walls 20 and 22, locking fixing members 28 for locking and fixing the box body 12 to the bus duct 100 are provided.

  In the present embodiment, the locking member 26 has a hook shape hooked into the locking hole 142b of the bus duct 100, and locks the bus duct 100 and the front portion of the box 12 in the hooked state. Although not shown, the locking and fixing member 28 is a member that protrudes below the bottom surface 14 and is urged inward in the width direction to hold and fix the bus duct 100 from both sides in the width direction.

  At the lower part of the front wall 16, a primary side fixing member 30 for holding and fixing the box body 12 to the bus duct 100 with a holding member with a bolt and nut is swingably attached via a hinge 16a. Before mounting, the primary side fixing member 30 is fixed to the handle 32 by a wire 34 made of a binding band or the like so as not to swing.

  At the lower part of the rear wall 18, a secondary side fixing member 36 for holding and fixing the box body 12 to the bus duct 100 with a holding member with a bolt and nut is provided.

  A three-phase branch terminal 42 is provided in the box 12 and protrudes from the bottom 14 of the box 12 to the outside of the box 12 at a position behind the locking member 26 and between the side walls 20 and 22. The branch terminal 42 is held in the box 12 by an insulating holder 44, and the base end portion is bent to play the role of a terminal block.

  The base end of the branching terminal 42 is electrically connected to a circuit breaker 48 by a conductor 46 also located in the box 12, and the circuit breaker 48 has an opening in which only the switch 48a is provided in the lid 24. It is exposed to the outside of the box 12 from the part 24a. When the switch 48a is turned off, the electrical connection in the branching device 10 is cut off, and when the switch 48a is turned on, the electrical connection in the branching device 10 is maintained.

  Further, although omitted in the figure, the configuration is such that electricity can be supplied from the conductor 46 to another device outside the box 12 via the circuit breaker 48. Therefore, the branch conductor included in the box 12 can be considered as a concept including a part of the branch terminal 42, the conductor 46, and the circuit breaker 48.

  At the same position in the front-rear direction of the box body 12 as the branching terminal 42, guide members 21 and 23, which are plate members that cover the distal end 42a of the branching terminal 42 from the side, are attached to the side walls 20 and 22, respectively. . Further, a bar-shaped displacement member 55 extending in the vertical direction in FIG. 1 and a bar-shaped display extending in the front-rear direction in FIG. A normal mounting position state display mechanism 50 (hereinafter, simply referred to as a normal mounting position state display mechanism 50) of the branching device 10 to the bus duct 100, which includes the member 60 as a main component, is provided.

  As shown in FIG. 2, the regular mounting position state display mechanism 50 houses a main body 51 formed of a rectangular box-like body having an open rear surface, and a display member 60 slidably in the left and right direction in the main body 51 as shown in FIG. And a displacement member 55 and a display member 60.

  The displacement member 55 has a flange 55b having a circular shape in a plan view on one end 55a side, and an insertion hole (an insertion hole 56a and an insertion hole 57a, respectively) of the upper support plate 56 and the lower support plate 57 of the main body 51. ) Is inserted through the base end 55b, and the spring member 52 is interposed between the support plate portion 57 and the flange portion 55b, so that one end 55a is formed from the inside of the box body 12 at the bottom surface 14 (that is, the mounting surface to the bus duct 100). It is urged out of the box 12 and protrudes.

  The displacement member 55 is fixed to the box body 12 as described above, and two magnets (a second magnet 59a and a third magnet 59b, which are arranged side by side in the direction in which the displacement member 55 extends). Are arranged so as to be able to move up and down in the range of the support plate 56 and the support plate 57.

  The display member 60 has a square-pillar-shaped plunger portion 61 in which each side surface is in sliding contact with the cylinder member 53 and a rod-shaped portion 62 having a rectangular-column-shaped cross-sectional shape smaller than the plunger portion 61. The hole 53a has a length capable of being inserted through a hole 53a formed in a front portion of the main body 53 and a through hole 58a penetrating the bottom plate 58 and the front wall 16 of the main body 51.

  A first magnet 61 a is attached to a base end 60 b of the display member 60, that is, a rear portion of the plunger 61.

  As shown in FIGS. 2 and 6 (b-1), in a state where the display member 60 is inserted into the cylinder member 53 from the distal end 60a, the N pole of the first magnet 61a attached to the display member 60 is displaced. The second magnet 59 a faces the south pole of the second magnet 59 a and attracts each other by magnetic force. At this time, the tip 60a of the display member 60 is on the through hole 58a.

  As shown in FIG. 3, the bus duct 100 according to the present embodiment to which the branching device 10 is attached has a configuration in which the bus duct units 110 as one unit thereof are connected to each other via a connection unit 130.

  In the bus duct unit 110, as shown in FIG. 3C, three-phase insulated and band-shaped conductors 114 insulated and covered with an insulator 112 are arranged in close contact with each other in the thickness direction. Spacers 116 are arranged at both ends in the width direction, and the conductors 114 and the spacers 116 covered with the insulation are collectively sandwiched by side plates 118 having a substantially U-shaped cross section. The fasteners are tightened and fixed.

  As shown in FIGS. 3A and 3B, the connection unit 130 has a plate-shaped conductive connection member 132 that electrically connects the in-phase conductors 114 of the bus duct units 110 to be connected. The conductors of different phases (including the conductive connection member 132) are insulated by the insulating separator 134. The insulating separator 134 also insulates the outermost conductor (including the conductive connection member 132) from the connection side plate 136. As shown in FIG. 3A, the connection side plate 136 is a pair of plate members covering both sides of the connection unit 130, and a pressing member 138 is disposed outside the connection side plate 136 in the thickness direction. The conductive connecting member 132, the insulating separator 134, the connecting side plate 136, and the pressing member 138 are tightened by a connecting fastener inserted through an insulating sleeve (not shown) to connect the bus duct unit 110 to each other. You.

  The upper and lower surfaces of the connection unit 130 are covered by connection upper and lower plates 142 that are respectively bridged between the upper end and the lower end of the connection side plate 136. The connection upper and lower plates 142 can receive the branch terminals 42 of the branching device 10. A substantially rectangular opening 142a and a locking hole 142b capable of locking the locking member 26 of the branching device 10 are provided. In addition, bolts 146, nuts 148, and washers 150 are used as connection fasteners. Before connection between the bus duct units 110, the bus duct unit 110 is unitized in a state where the bus duct units 110 are temporarily fastened by the connection fasteners. Have been.

  When the bus duct unit 110 is connected by the connection unit 130 to form the bus duct 100, the conductor 114 of the bus duct unit 110 to be connected is inserted between the conductive connection members 132 of the same phase, and the side plate 118 and the connection side plate 136 of the bus duct unit 110 are inserted. And are fixed with fasteners (bolts and nuts, etc.). After that, the temporarily tightened connection fastener is tightened, and the connection upper and lower plates 142 are arranged on the upper and lower surfaces of the connection unit 130 and fixed to the bus duct unit 110 by screws or the like, thereby completing the connection. I do. The substantially rectangular structure in cross section formed by the connection upper and lower plates 142, 142 and the connection side plates 136, 136 can be referred to as a housing that covers the conductor (including the conductive connection member 132) of the bus duct 100.

  Next, an operation of branching from the bus duct 100 using the branching device 10 according to the present embodiment will be described with reference to FIG.

  First, as shown in FIG. 4A, the upper surface of the bus duct 100 (the upper surfaces of the connection upper and lower plates 142 and the upper surfaces of the spacers 116 and the side plates 118) and the bottom surface 14 of the branching device 10 (the mounting surface of the bus duct 100 to the housing). Are arranged facing each other with the front end side of the branching device 10 inclined downward in the figure. Next, as shown in FIG. 4B, while maintaining this inclined state, the locking member 26 of the branching device 10 is inserted into the locking hole 142b of the connection upper and lower plate 142, and the front end side of the branching device 10 is moved. The connection unit 130 is locked.

  Next, the inclined branching device 10 is moved by the arrow until the substantially entire surface of the bottom surface 14 of the box body 12 is substantially in contact with the upper surface of the bus duct 100 about the locking member 26 locked in the locking hole 142b. 4C, and in this state, the claw portion (not shown) of the locking and fixing member 28 is engaged with the side end portion 118a of the side plate 118 of the bus duct unit 110 (see FIG. 3C). The branching device 10 and the bus duct 100 are coupled by holding the bus duct 100 from both sides in the width direction by the locking and fixing members 28.

  Finally, as shown in FIG. 4D, the wire 34 is removed, the primary fixing member 30 is rotated in the direction of the arrow 400 around the hinge 16a, and is fixed to the bus duct 100 with a bolt and nut by a clamping member. The secondary side fixing member 36 is pinched and fixed to the side plate 118 with a bolt and nut by a pinching member.

  In the state where the branching device 10 is fixedly attached to the bus duct 100 as described above, the distal end 42a side of the branching terminal 42 of the branching device 10 is inserted through the opening 142a of the connection upper and lower plate 142 to form the conductive connection of the connection unit 130. It comes into contact with the member 132 with an appropriate contact area, and the branching terminal 42 and the conductor of the bus duct 100 are electrically connected.

  Next, the operation of the normal mounting position state display mechanism 50 when the box 12 is mounted on the bus duct 100, that is, when the branching device 10 is mounted, will be described.

  As shown in FIG. 4B, in a state where the locking member 26 of the branching device 10 is inserted into the locking hole 142b of the connection upper and lower plate 142 and the front end side of the branching device 10 is locked to the connection unit 130, As shown in FIG. 5A, one end 55 a of the displacement member 55 is not in contact with the upper surface of the bus duct 100. In this state, as shown in FIG. 6B-1, the S pole of the second magnet 59a of the displacement member 55 and the N pole of the first magnet 61a of the display member 60 face each other and attract each other by magnetic force. I have. At this time, the distal end 60a of the display member 60 is on the through hole 58a and does not protrude from the front wall 16 of the branching device 10.

  Next, when the branching device 10 with the front end inclined downward is rotated downward on the rear end side of the box body 12 around the locking member 26 locked in the locking hole 142b, the displacement member is displaced. When one end 55a of the contact 55 comes into contact with the connection upper and lower plates 142 of the connection unit 130 (see FIG. 5B), and further turning the rear end side of the box body 12 downward, as shown in FIG. 5C. Then, the displacement member 55 is pushed back upward (in the direction of the arrow 500) in the figure against the urging force of the spring member 52. In the state shown in FIG. 5C, as shown in FIG. 6B-2, the N pole of the first magnet 61a of the display member 60 faces the S pole of the second magnet 59a of the displacement member 55. However, the display member 60 released from the magnetic force of the attraction starts moving in the direction of the tip 60a.

  Further, when the rear end side of the box body 12 is rotated downward so that substantially the entire bottom surface 14 of the box body 12 is substantially in contact with the top surface of the bus duct 100 (that is, a regular mounting position state), FIG. 6 (b-3), the displacement member 55 moves further upward (in the direction of the arrow 500), and the third magnet 59b of the displacement member 55 faces the first magnet 61a of the display member 60. . Since the third magnet 59b is provided on the displacement member 55 such that the display member 60 has the N pole, the third magnet 59b repels the first magnet 61a of the display member 60 arranged with the N pole facing the displacement member 55. . Due to this repulsive force, the display member 60 largely moves toward the tip 60 a (in the direction of the arrow 600), and the tip 60 a projects from the front wall 16 of the box 12 to the outside of the box 12.

  The distal end 60a of the display member 60 protruding outside the box 12 is hidden by the primary side fixing member 30 and cannot be seen as shown in FIG. 4C, but is shown in FIG. 4D. Thus, the primary fixing member 30 becomes visible by the rotation of the primary fixing member 30 accompanying the fixing operation of the branching device 10 to the bus duct 100 by the primary fixing member 30. When the branching device 10 is removed from the bus duct 100, the regular mounting position state display mechanism 50 displaces as shown in FIGS. 5 (d) → (c) → (b) → (a). The member 55 is moved downward in the figure by the urging force of the spring member 52, and the N pole of the first magnet 61a of the display member 60 is attracted to the S pole of the second magnet 59a of the displacement member 55, so that the distal end 60a becomes a through hole 58a. Retract to.

  Therefore, in the branching device 10 according to the present embodiment, the relative position of the displacement member 55 with respect to the box 12 changes due to the mounting operation of the box 12 containing the branching conductor on the bus duct 100, and the displacement member 55 The display member 60 is exposed to the outside of the box body 12 with the change of the relative position of, and the viewing state changes, and the display member 60 is displayed so as to be visible from outside the box body. Thereby, the state of the normal attachment position of the branching device 10 to the bus duct 100 is shown.

  Therefore, it is not necessary to open the box when branching off from the electric trunk line (bus duct 100), and the branching operation of the bus duct 100 can be performed safely even in the energized state. In addition, since it is not necessary to open the box 12 when branching from the electric trunk line, the branching operation is facilitated by that much, and since the display member 60 is exposed outside the box 12, it is already laid. Also, when checking the state of attachment of the branching device 10 to the bus duct 100 with respect to the bus duct 100, the inspection can be easily performed without opening the box 12.

  Since one end 55a (part) of the displacement member 55 projects from the inside of the box 12 to the outside of the box 12 on the mounting surface (bottom surface 14) of the box 12 to the bus duct 100, the bus duct 100 of the box 12 The mounting operation to the housing and the pressing operation of the one end 55a of the displacement member 55 to the housing of the bus duct 100 can be performed at the same time, resulting in a configuration with better workability.

  Further, the display member 60 is exposed to the outside of the box body 12 at the front surface of the front wall 16 which is a surface substantially orthogonal to the bottom surface 14 (the surface to be attached to the bus duct) at a position where the branching device 10 is properly attached to the bus duct 100.

  In general, when viewing the branching device attached to the bus duct, it is often the case that the display device 60 is almost perpendicular to the mounting surface to the bus duct. Thus, it is easy to check the state of exposure of the display member 60 to the outside of the box 12.

  Furthermore, since the display member 60 is exposed based on the operation in which the displacement member 55 is pushed back into the box body 12 and the display member 60 protrudes outside the box body 12, the display device 60 has a very simple configuration. It is possible to confirm the state of the regular attachment position to the bus duct 100.

  Also, the magnetic field around the first magnet 61a of the display member 60, which was attracted to the S pole of the second magnet 59a of the displacement member 55, is pushed back against the urging force of the displacement member 55 by the third magnet of the displacement member 55. It changes to a magnetic field that repels the N pole of 59b.

  Therefore, the displacement members 55 are arranged between the displacement operation direction positions (that is, the longitudinal positions) of the displacement members 55 in a state where the pushing back of the displacement members 55 is completed (that is, the branching device 10 is at the regular attachment position to the bus duct 100). By adjusting the position of the magnet, the magnetic field of the first magnet 61a of the display member 60 is selectively changed in a state where the push-back of the displacement member 55 is completed, and the display member 60 is selectively moved from the front wall 16 at that timing. Adjustment such as projecting is possible.

  Further, by adjusting the distance between the second magnet 59a and the third magnet 59b and the length in the longitudinal direction of the bar-shaped portion 62 and the plunger portion 61 of the display member, the movement of the display member 60 in the displacement member 55 from the start to the end is completed. The moving distance A (see FIG. 6) of the display member 60 is set to be longer than the moving distance B (see FIG. 6B-3). Therefore, it is possible to provide the regular mounting position state display mechanism 50 in which the distal end 60a of the display member 60 protrudes outside the box body 12 and is conspicuous (has high visibility). In other words, when the branching device 10 is securely attached, the display member 60 protrudes greatly. When the display member 60 does not protrude, the tip 60 a of the display member 60 is flush with the front wall 16 of the box 12 or is located slightly inside the box 12. It is suitable.

  In addition, before the branching device 10 is attached to the bus duct 100, that is, in a normal state, the through-hole 58a that allows the display member 60 to project is covered by the primary-side fixing member 30 (fixing bracket). The tip 60a of 60 is hidden by the primary side fixing member 30 (fixing fitting).

  For this reason, the display member 60 is protected by the primary side fixing member 30, and deformation or the like due to external force can be prevented. Further, when the primary side fixing member 30 (fixing bracket) is swung to fix the box body 12 to the bus duct 100, the tip 60a of the display member 60 becomes visible, so that the primary side fixing member 30 The attention of the worker to be fixed can be drawn to the tip 60a of the display member 60, which prevents the display member 60 from being forgotten to be checked during the operation.

  In addition, since the regular mounting position state display mechanism 50 is unitized, it is easy to incorporate it into the branching device 10.

  Further, in the present embodiment, as is apparent from FIGS. 6B-1 to 6B-3, the second magnet 59a and the third magnet 59b are moved relative to the displacement member 55 from the first magnet 61a side. Although it is designed to be attached, it is preferable to attach only the second magnet from the opposite side (that is, the right side surface of the displacement member 55 in the figure). According to this, as in the case where the second magnet is attached to the left side surface of the displacement member in the drawing, the second magnet is separated from the displacement member by the force of attraction between the N pole of the first magnet 61a and the S pole of the second magnet 59a. It is possible to prevent the problem of coming off.

  Similarly, regarding the first magnet 61a, the second magnet 59a, and the third magnet 59b, the first magnet 61a is provided on the side surface of the display member 60 in the left-right direction in FIG. 6A, and the second magnet 59a and the third magnet 59b are provided. May be provided on the side surface of the displacement member 55 in the left-right direction in FIG. Also according to this configuration, it is possible to prevent a problem that the magnets are detached from the member to which the magnets are attached by attracting the magnets.

  In the present embodiment, the display member 60 is configured to protrude outside the box 12 with the movement of the displacement member 55 into the box 12 (movement in the direction of the arrow 500 in FIG. 5D). However, the present invention is not limited to this, and another configuration can be adopted.

  In the following, the configuration of the normal mounting position state display mechanism of the branching device 10 is changed, and the display member which originally protrudes outside with the movement of the displacement member inside the box body is housed inside. A branching device 10 according to a modified example of the position state display mechanism will be described with reference to FIG. 7, the same elements as those in the embodiment shown in FIGS. 1 to 6 are denoted by the same reference numerals, and description thereof will be omitted. FIG. 7 is a schematic diagram for explaining the operation of the normal mounting position state display mechanism 180 according to the modification of the first embodiment.

  The main change of the normal mounting position state display mechanism 180 according to the present modification compared with the normal mounting position state display mechanism 50 according to the above embodiment is that the second magnet and the third magnet are arranged on the displacement member 55. It is in.

  That is, as shown in FIG. 7 (b-1), in this modification, the second magnet 59a-1 is located on the left side of the displacement member 55 such that the S pole is located on the right side in the drawing and the N pole is located on the left side in the drawing. It is attached to the side of.

  Further, as shown in the figure, the third magnet 59b-1 is attached to the right side surface of the displacement member 55 so that the S pole is located on the left side in the drawing and the N pole is located on the right side in the drawing.

  Therefore, in a state where the displacement member 55 protrudes greatly from the inside of the box body 12 to the outside according to the urging force of the spring member 52, as shown in FIG. 7B-1, the second magnet 59a- The first N-pole faces the N-pole of the first magnet 61a of the display member 60, and repels each other by magnetic force. Due to this repulsive force, the display member 60 moves to the left in the drawing, and the tip 60 a is inserted through the through hole 58 a and is projected from the front wall 16 of the box 12 to the outside of the box 12.

  Next, the operation of the regular mounting position state display mechanism 180 accompanying the mounting of the box body 12 to the bus duct 100, that is, the mounting of the branching device 10, will be described.

  As shown in FIG. 4, the mounting operation of the branching device 10 is performed in the same manner as in the above-described embodiment. As the branching device 10 is mounted on the bus duct 100, one end 55 a of the displacement member 55 is connected to the connection unit 130. The contact member comes into contact with the connection upper and lower plates 142 (see FIG. 5B), and the displacement member 55 is pushed back upward (in the direction of the arrow 500) in FIG. 5C against the urging force of the spring member 52. The positional relationship between the displacement member 55 and the display member 60 in this state is shown in FIG.

  As the operation of attaching the branching device 10 to the bus duct 100 further proceeds, substantially the entire bottom surface 14 of the box body 12 comes into substantially contact with the upper surface of the bus duct 100, as shown in FIGS. 5D and 7B-3. As described above, the displacement member 55 moves further upward (in the direction of the arrow 650 in FIG. 7B-3), and the third magnet 59b-1 of the displacement member 55 faces the first magnet 61a of the display member 60. . Then, since the third magnet 59b-1 is provided on the displacement member 55 so that the display member 60 side becomes the S pole, the first magnet 61a of the display member 60 arranged with the N pole facing the displacement member 55 side. Attracts. Due to this attractive force, the display member 60 largely moves in the direction of being housed inside the box body 12 and retracts into the through hole 58a, and the tip end 60a is housed inside the box body 12.

According to the branching device 10 having the normal mounting position state display mechanism 180 according to the present modification, the relative position of the displacement member 55 to the box 12 is changed by the mounting operation of the box 12 including the branching conductor on the bus duct 100. The display member 60 which is initially exposed to the outside of the box body 12 with the change in the relative position of the displacement member 55 is housed inside the box body 12, so that the branching device 10 is properly attached to the bus duct 100. The position status can be indicated.
Further, according to the first embodiment, the second magnet 59a is attached to the left side surface of the displacement member 55 such that the south pole is located on the left side in the drawing and the north pole is located on the right side in the drawing in FIG. According to the regular mounting position display mechanism 50, there is a concern that the second magnet 59a may fall off the displacement member 55 due to the magnetic force of the N pole of the first magnet 61a and the S pole of the second magnet 59a that attract each other.

  In this modification, if a third magnet is attached to the left side surface of the displacement member 55 so that the S pole is located on the left side in the drawing and the N pole is located on the right side in the drawing in FIG. It was feared that the third magnet would fall off with a change in the magnetic field around the first magnet 61a due to the displacement of the displacement member 55.

  However, according to the normal mounting position state display mechanism 180 according to the present modification, as shown in FIG. 7B-1, the second magnet 59a-1 has an S pole on the right side in the drawing and an N pole on the left side in the drawing. The first magnet 61a and the second magnet 59a- are mounted in a normal state, that is, in a state where one end 55a of the displacement member 55 is not in contact with the bus duct 100, since the first magnet 61a and the second magnet 59a- In No. 1, the N poles face each other and repel each other by magnetic force, and the problem of the second magnet 59 a-1 falling off is solved.

  Further, one end 55a of the displacement member 55 contacts the bus duct 100 and moves upward in FIG. 7, and as shown in FIG. 7B-3, the first magnet 61a and the third magnet 59b-1 face each other. In this case, a magnetic field attracting between the N pole of the first magnet 61a and the S pole of the third magnet 59b-1 is generated, but the third magnet 59b-1 is located on the right side surface of the displacement member 55 in the drawing. The attachment prevents the third magnet 59b-1 from falling off due to the change in the magnetic field.

  Therefore, according to the regular mounting position display mechanism 180 according to the present modification, the second magnet 59a-1 and the third magnet 59b-1 are displaced by the displacement member 55 due to the magnetic field generated with the first magnet 61a. The risk of falling off from the vehicle is prevented.

  When the branching device 10 is removed from the bus duct 100, the displacement member 55 is moved downward (in the direction opposite to the arrow 650) in FIG. The N pole of one magnet 61a repels the N pole of the second magnet 59a-1 of the displacement member 55, and the tip 60a again passes through the through hole 58a and protrudes outside the box 12.

  Further, in the present embodiment, a mechanism that uses a change in a magnetic field by a magnet provided on each of the display member and the displacement member is adopted as the normal attachment position state display mechanism. However, the present invention is not limited to this. It is also possible to adopt a configuration.

(2nd Embodiment)
Hereinafter, the branching device 70 in which the configuration of the normal mounting position state display mechanism is changed will be described with reference to FIG. In FIG. 8, the same elements as those in the embodiment shown in FIGS. 1 to 7 are denoted by the same reference numerals, and description thereof will be omitted. FIG. 8 is an enlarged vertical cross-sectional view of a main part of a branching device 70 showing a normal mounting position state display mechanism 80 according to the second embodiment.

  As shown in FIG. 8A, the regular mounting position state display mechanism 80 has a main body 82 having a hat-shaped cross section, and a display member 84 attached to the main body 82 so as to be inserted therethrough.

  The main body 82 is joined to the front wall 16 by a flange 82a, and has an insertion hole 82b through which the display member 84 is inserted.

  The display member 84 has a rod-like shape having a substantially circular flange portion 84b in a plan view on the base end 84a side, and is connected to the front wall 16 and extends from the projecting hole 86a of the projecting plate 86 in which the projecting hole 86a is formed. The body 84 is supported by the main body 82 such that the base 84a projects beyond the insertion hole 82b while the base 84a projects from the flange 84b. A spring member 88 is provided between the protruding plate 86 and the flange portion 84b, so that the display member 84 is urged inward of the box 12 (to the right in the drawing).

  The regular mounting position state display mechanism 80 includes a rod-shaped displacement member 90, a substantially L-shaped cross section, a short wall 92a fixed to the front wall 16, a long wall 92b extending rearward and piercing the long wall 92b. And a support member 92 for supporting the displacement member 90 by inserting the same into the provided insertion hole 92c.

  The displacement member 90 has a flange 90b on one end 90a side, and the one end 90a side projects beyond the flange 90b from the bottom surface 14 of the box 12 to the outside of the box 12. A spring member 94 is provided between the flange portion 90b and the long wall 92b of the support member 92, and urges the displacement member 90 toward the outside of the box 12 (downward in the figure). Therefore, the display member 84 and the displacement member 90 extend in directions orthogonal to each other as shown in the figure.

  On the upper side of the support member 92 of the displacement member 90, a leaf spring 96 having a substantially U-shape in cross section causes the curved protruding portion 96a to face the front end of the box body 12 (leftward in the drawing) and end portions 96b, 96c. At the side of the displacement member. Therefore, the leaf spring 96 can be said to be an elastic projection that projects toward the display member 84 and the amount of the projection gradually increases from the longitudinal end (the other end 90c) of the displacement member 90 toward the center.

  Next, the operation of the normal mounting position state display mechanism 80 accompanying the mounting of the branching device 70 to the bus duct 100 will be described. With the attachment of the branching device 70 to the bus duct 100, one end 90a of the displacement member 90 comes into contact with the bus duct 100 and is pushed back in the direction of arrow 700 against the urging force of the spring member 94 as shown in FIG. It is.

  Accordingly, the base end 84a of the display member 84 comes into contact with the leaf spring 96 on the end portion 96b side (a portion where the amount of protrusion is small). Then, as the displacement member 90 is further pushed back inside the box 12 (in the direction of arrow 700), the base end 84a of the display member 84 protrudes above the leaf spring 96 from the end 96b side (a portion where the amount of protrusion is small). As shown in FIG. 8C, the display member 84 slides toward the portion 96a (a portion where the amount of protrusion is large), so that the display member 84 moves in the protruding direction on the left side in the drawing (direction of arrow 800), that is, in the direction of the tip 84c. It is pushed and protrudes from the front wall 16 to the outside of the box 12.

  At this time, as shown by the broken line in FIG. 8B, the leaf spring 96 reduces the pressing force from the base end 84a of the display member 84 even when the displacement member 90 is pushed back into the box 12 to some extent. The display member 84 is elastically deformed and absorbed, and is maintained without moving in the direction of the distal end 84c. However, when the displacement member 90 is further pushed into the box 12, the force of the leaf spring 96 is released and rebounds at a stretch, and the display member 84 projects vigorously to the outside of the box 12. The repelled leaf spring 96 returns to the normal shape, and the base end 84a of the display member 84 and the protruding portion 96a are in contact with each other, so that the state of the display member 84 protruding outside the box 12 is maintained.

  When the branching device 70 is removed from the bus duct 100, the displacement member 90 projects from the bottom surface 14 to the outside of the box 12 by the urging force of the spring member 94, and the display member 84 is retracted into the box 12 again.

  That is, according to the branching device 70 having the regular mounting position state display mechanism 80 according to the present embodiment, the pressing force is elastically deformed and absorbed to a certain extent of the leaf spring 96, and the force is quickly applied when further pressing force is applied. When the displacement member 90 is pushed back into the box 12 by an amount corresponding to the state where the branching device 70 is properly attached to the bus duct 100, the leaf spring is used. It is possible to make an adjustment such that the display member 84 is made to protrude to the outside of the box body 12 by repelling the 96.

  Further, according to the branching device 70 according to the present embodiment, in addition to the effect of the first embodiment, the branching device of the normal bus duct is mainly made of metal, and it is possible to avoid a problem caused by using a magnet. Can be.

  In the second embodiment, the display member 84 protrudes outside the box 12 with the movement of the displacement member 90 into the box 12 (the movement in the direction of the arrow 700 in FIG. 8C). Although the configuration is adopted, the present invention is not limited to this, and another configuration can be adopted.

  In the following, the configuration of the normal mounting position state display mechanism of the branching device 70 is changed, and the display member that has protruded outside with the movement of the displacement member inside the box is housed inside. A branching device 70 according to a modification of the state display mechanism will be described with reference to FIG. In FIG. 9, the same elements as those in the embodiment shown in FIGS. 1 to 8 are denoted by the same reference numerals, and the description thereof will be omitted. FIG. 9 is a schematic diagram for explaining the operation of the normal attachment position state display mechanism 210 according to a modification of the second embodiment.

  As shown in FIG. 9, the regular mounting position state display mechanism 210 according to this modification is different from the regular mounting position state display mechanism 80 according to the second embodiment in that the rod-shaped displacement member 90-1 has the displacement member 90. The plate spring 96-1 extends longer than shown in the figure, and the leaf spring 96-1 is located above the plate spring 96 in the figure.

  As shown in FIG. 9A, when the one end 90a of the displacement member 90 is not in contact with the upper surface of the bus duct 100, the leaf spring 96-1 contacts the protruding portion 96a-1 with the base end 84a of the display member 84. ing.

  Therefore, the display member 84 is maintained in a state where it is pushed to the left in FIG. 9A against the urging force of the spring member 88 and protrudes outside the box 12.

  Next, the operation of the regular mounting position state display mechanism 210 accompanying the mounting of the branching device 70 to the bus duct 100 will be described. With the attachment of the branching device 70 to the bus duct 100, one end 90a-1 of the displacement member 90-1 comes into contact with the bus duct 100 and, as shown in FIG. 9B, an arrow against the urging force of the spring member 94. Pushed back in 750 direction.

  Accordingly, as shown in FIG. 7B, the base end 84a of the display member 84 is moved from the protruding portion 96a-1 of the leaf spring 96-1 (a portion where the protruding amount is large) to the end 96c-1 (protruding portion). The display member 84 moves to the right (in the direction of the arrow 850) in the figure and is stored inside the box 12 with this sliding movement. Thereafter, as shown in FIG. 9C, the displacement member 90-1 further moves in the direction of arrow 750, the base end 84a of the display member 84 is completely separated from the leaf spring 96-1, and the display member 84 is completely Is stored inside the box 12.

  According to the branching device 70 having the normal mounting position state display mechanism 210 according to this modification, the displacing member 90a-1 is moved relative to the box 12 by the mounting operation of the box 12 including the branching conductor on the bus duct 100. The position changes, and the display member 84 which was initially exposed to the outside of the box 12 with the change in the relative position of the displacement member 90a-1 is stored inside the box 12, so that the bus duct 100 of the branching device 70 The state of the regular mounting position on the LM can be indicated.

  When the branching device 70 is removed from the bus duct 100, the displacement member 90-1 projects from the bottom surface 14 to the outside of the box 12 by the urging force of the spring member 94, and the display member 84 again projects to the outside of the box 12.

  The embodiments of the present invention have been described above. However, the present invention can be extended and modified within the scope of the gist. In addition to the configurations of the inventions and the embodiments, these partial configurations are described in the present invention. The components specified by changing to other configurations disclosed in the specification, or the configurations specified by adding other configurations disclosed in this specification to these configurations, or the partial configurations and effects of these partial configurations have This includes a generalized concept that has been deleted and specified to the extent that it can be obtained. For example, the following modified examples are also included.

  That is, the branching device according to the above-described embodiment includes various components such as a locking member, a primary side fixing member, a secondary side fixing member, and a handle. Are included, and the shape, size, number, position, and the like of each component are not limited.

  Further, the structure of the bus duct, the structure of the bus duct unit and the connection unit, and the like are not limited to those in the above-described embodiment, and the location of the branch is not limited to the upper part of the connection unit in the above-described embodiment. As shown in (2), a case where a branch is taken at an intermediate position of the bus duct unit with an air-insulated bus duct may be adopted.

  FIG. 10 is a diagram for explaining attachment of the branching device 160 to the air-insulated bus duct 200. As shown in FIG. 10A, in the air-insulated bus duct 200, a four-phase strip-shaped conductor 202 is housed in a housing 204 in a state of being separated by a predetermined distance. The housing 204 has an opening (not shown) at a location where the branching device 160 is attached, and has a configuration in which the branching terminal 162 of the branching device 160 can be inserted.

  The branching device 160 includes a box 164 containing a branch conductor for branching, a branch terminal 162 protruding from the lower surface of the box 164, a holder 166 for protecting the branch terminal 162, a branch terminal 162 and the holder. A fixing member 168 that is engaged with the housing 204 of the bus duct 200 at positions on both sides in the left-right direction of FIG.

  On the illustrated front side of the box 164, it can be confirmed that the tip 170a of the two circular rod-shaped display members 170 is substantially flush with the illustrated front part of the box 164. From the bottom surface 165, a state in which two rod-shaped displacement members 172 urged downward by a spring member (not shown) project from one end 172a side can be confirmed.

  The display member 170 protrudes from a protruding hole (not shown) of the protruding plate 174 having a circular shape in a front view. This aspect is the same as that of the first and second embodiments, and thus, it is easy to visually check the display member 170 projecting from the projecting hole.

  The regular mounting position state display mechanism may be either of the first and second embodiments, but two displays are provided in the normal mounting position state of the branching device 160 to the bus duct 200 (see FIG. 10C). The member 170 needs to be configured to protrude for the first time.

  That is, when the branching device 160 is attached to the housing 204 of the bus duct 200 in a state of being inclined leftward or downward, and only one of the left and right fixing members 168 is engaged with the housing 204. Is that only one of the two display members 170 protrudes from the protruding hole, and the other display member 170 does not protrude from the protruding hole. Therefore, it is possible to confirm the state of engagement of both fixing members 168 with the housing 204, that is, the state of the proper attachment position of the branching device to the bus duct 200 without fail.

  Note that the display member 170 may be attached so as to prevent the branching device 160 from being attached to the housing 204 of the bus duct 200 in an inclined state. For example, the display member 170 may be attached not only to the front but also to the back of the box 12. A configuration in which two are provided to provide a total of four may be provided, or one may be provided in front of the box 12 and the other may be provided in the back of the box 12.

  Further, the display member or the displacement member is not necessarily required to have a rod shape, and the display member may be any member as long as it is understood that the branching device is attached to the bus duct. Any type can be used as long as it can indicate the state of the normal attachment position to the bus duct.

  Further, the display member and the displacement member do not necessarily have to have a one-to-one relationship. For example, a plurality of display members may be able to be displayed by one displacement member, and conversely, all the displacement members of the plurality of displacement members indicate that the branching device is in a normal attachment position state to the bus duct. In this state, one display member may be displayed.

  In addition, the shape, size, and the like of the display member are not particularly limited, and for example, various members can be considered as shown in FIG. 11, the same elements as those in the embodiment shown in FIGS. 1 to 10 are denoted by the same reference numerals, and the description thereof will be omitted. FIG. 11 is a view showing a modification of the display member 60 according to the first embodiment.

  As shown in FIG. 11A, a configuration may be adopted in which the tip 60 a ′ of the protruding display member 60 ′ is larger than other portions, so that it is easier to see from the front.

  Also, as shown in FIG. 11B, the tip 60a "of the display member 60" is broken into four parts, and by using an elastic member, when the display member protrudes, the four-part body is bent in four directions. When the display member is housed in the box, the display member is inconspicuous, and when the display member moves in the direction of the tip, the display member becomes conspicuous. It becomes easier to see from the screen.

  Further, as shown in FIG. 11 (c), a configuration in which the bar-shaped portion 62 ′ ″ of the display member 60 ″ ″ is formed in a cross shape when viewed from the front may be employed. Visual observation from the side becomes easy without increasing. When a bar-shaped display member is used, the display member is preferably hollow, and can be reduced in weight, and the present invention can be realized with a small magnetic force or a small leaf spring force.

  Further, it is preferable that the display member is made of a fluorescent color, and it is easy to visually confirm the display member by illuminating a light when inspecting a bus duct installed in a dark place.

  INDUSTRIAL APPLICABILITY The branching device for a bus duct of the present invention can be used when branching a bus duct used as an electric trunk line in a high-rise building or a factory.

10, 70, 160 Branching device for bus duct 12, 164 Box body 30 Primary side fixing member (fixing bracket)
42 Branch terminal (branch conductor)
44 Terminal block (branch conductor)
46 conductor (branching conductor)
48 circuit breaker (branch conductor)
55, 90 Displacement member 59a, 59a-1 Second magnet (magnet)
59b, 59b-1 Third magnet (magnet)
60, 60 ′, 60 ″, 60 ′ ″, 84 Display member 61a First magnet (magnet)
96, 96-1 leaf spring (elastic projection)
100, 200 bus duct

Claims (9)

A box enclosing a branch conductor electrically connected to a conductor of the bus duct, and a displacement member whose relative position with respect to the box changes against urging force by an operation of attaching the box to the bus duct; In a branch device of a bus duct having
A branching device for a bus duct, comprising: a display member that changes its visibility from outside the box by moving outside the box with the change in the relative position of the displacement member. The change of the visual recognition state of the display member from the outside of the box body,
The display member is provided by moving from a state of being exposed to the outside of the box to a state of being stored inside or from a state of being stored inside to a state of being exposed to the outside. 2. The branching device for a bus duct according to claim 1. The displacement member is partially urged from the inside of the box to the outside of the box at a mounting surface of the box to the bus duct, and a part thereof is projected.
The change in the relative position of the displacement member is an operation in which a part of the displacement member is pressed into contact with the housing of the bus duct so that the part is pushed back into the box body against the urging force. The branch device for a bus duct according to claim 1 or 2, wherein: The movement of the display member outside the box body is performed outside the box body from a surface substantially orthogonal to a mounting surface of the box body to the bus duct. The branching device for a bus duct according to claim 1. The movement of the display member is
The displacing member is moved based on the operation of being pushed back into the box body, and the display member that has been visibly protruded to the outside from the substantially orthogonal surface of the box body is housed inside, or the box body 5. The bus duct branching device according to claim 4, wherein the display is carried out by projecting the display member housed inside to be visible from outside the box body. 6. The displacement member has two magnets that are opposite to each other and are disposed at a predetermined interval in the displacement operation direction, and the display member also has a magnet,
2. The display member according to claim 1, wherein the movement of the display member is caused by a change in a magnetic field around a magnet of the display member caused by a push-back operation of the displacement member into the box body against the urging force. The branch device for a bus duct according to any one of claims 1 to 5. On the side surface of the displacement member, there is provided an elastic projection that gradually increases in a direction in which the display member protrudes outside the box body,
The movement of the display member is
Movement of the display member in the protruding direction to the outside of the box body due to contact with the elastic projection due to the displacement member being pushed back into the box body, or to the outside of the box body by contacting the elastic projection. 6. The movement of the protruding display member in the housing direction into the box body due to separation from the elastic projection due to the displacement member being pushed back into the box body. The branch device for a bus duct according to any one of claims 1 to 4.   The moving distance of the display member is longer than the moving distance from the position of the displacement member at the start of the movement of the display member to the position of the displacement member at the end of the movement of the display member. The branching device for a bus duct according to claim 1. A fixture for fixing the box to the housing of the bus duct is swingable to the box, and in a normal state, the display member can be projected outside the box or housed inside the box. It is attached so as to cover the through hole that
The bus duct according to any one of claims 1 to 8, wherein the through-hole is made visible by a swinging operation of the fixing bracket for fixing the box body to a housing of the bus duct. Branching device.

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