JP2018046657A - Bus duct branch system and branch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bus duct branch system capable of easily mounting a tap-off branch structure later.SOLUTION: A bus duct branch system includes a bus duct 10 having a plurality of conductive connection members 121 in a housing and a branch device 20 in which a plurality of branch conductors 40 are protruded downward. When the branch device 20 is mounted onto the bus duct 10, each of the plurality of branch conductors 40 is adapted to abut on the corresponding conductive connection member 121 of the bus duct 10. Further, the branch device 20 is provided with a fastening tool 45 and a pressing member 43 capable of collectively fastening the plurality of branch conductors 40 and the plurality of conductive connection members 121 when being mounted onto the bus duct 10.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a bus duct branching system and a branching device, for example, a bus duct branching system and a branching device that branch off electric power from a bus duct by tap-off.

  Conventionally, a bus duct is used as an electric trunk line of a building. Further, there is known a bus duct branching structure (hereinafter simply referred to as “branching structure”) for branching the power flowing through the bus duct to equipment or a distribution board. For example, Patent Document 1 discloses the configuration thereof. Yes. The branching structure described in Patent Document 1 includes a branching conductor (hereinafter referred to as a “tap-off conductor”) overlapped with a bus duct conductor and tightened with a bolt, so that a branch duct is provided. The power flowing through the conductor can be branched.

Japanese Utility Model Publication No.7-11834

  However, the above-described conventional branched structure has the following problems.

  Specifically, in the branch structure of the type described in Patent Document 1, since the bus duct conductor and the tap-off conductor are overlapped and tightened with a bolt, a stable electrical connection can be realized as compared with the plug-in connection, and Electric power can be branched when necessary. However, the branch structure of the type described in Patent Document 1 needs to be attached in advance with a connection unit having a tap-off conductor (hereinafter simply referred to as “tap-off connection unit”) in anticipation of being required later. It has such a problem. Furthermore, the branch structure of the type described in Patent Document 1 not only looks bad because the tap-off conductor when not in use protrudes greatly from the housing of the bus duct, but also becomes an obstructive factor for work around the bus duct. . Further, when it is desired to branch the power at a portion where the tap-off connection unit has not been attached in advance, there is a trouble of replacing the tap-off connection unit.

  The present invention is proposed in order to solve the above-described problems. The purpose of the present invention is to easily attach a tap-off branching structure as a retrofit if necessary without providing a tap-off branching structure in advance in the bus duct. It is an object of the present invention to provide a bus duct branching system and a branching device that can perform the above.

  The present invention made to solve the above problems is a bus duct branching system having a bus duct having a plurality of conductive members in a housing, and a branching device in which a plurality of branching conductors protrude downward. When the branch device is attached to the bus duct, each of the plurality of branch conductors comes into contact with the corresponding conductive member of the bus duct, and the branch device is attached to the bus duct. In this case, a fastening member capable of fastening the plurality of branch conductors and the plurality of conductive members together is provided.

  According to said structure, even if it does not provide a tap-off branch structure in advance in a bus duct, a tap-off branch structure can be retrofitted easily and electric power can be branched from a bus duct. Specifically, according to the present invention, by attaching a branch device to the bus duct, the branch conductor protruding downward from the branch device is brought into contact with the conductive member of the bus duct, and the branch conductor is formed by the fastening member. And the conductive member can be fastened together. That is, by retrofitting a branching device to the bus duct, a tap-off branching structure similar to the case where a tap-off branching structure is provided in advance in the bus duct is realized, and stable electrical connection is possible as compared with plug-in connection.

  In addition, it is desirable that the fastening member can fasten a housing of the bus duct together with the branch conductor and the conductive member.

  According to the above configuration, the fastening member of the branching device fastens not only the conductors but also the housing of the bus duct, so that a strong tap-off branching structure with a simple structure can be installed in the bus duct. . As a result, even if an external force is applied to the branching device, it is difficult to apply a force to the connection portion between the conductive member and the branch conductor, and a stable electrical connection can be ensured.

  Preferably, the branch device includes a housing, and the housing of the bus duct and the housing of the branch device are connected by fastening of the fastening member.

  According to the above configuration, the fastening member of the branching device not only fastens the conductors but also connects the bus duct and the housing of the branching device by the fastening. Can be installed in the bus duct. As a result, even if an external force is applied to the branch device, a force is less likely to be applied to the connecting portion between the conductive member and the branch conductor, and a stable electrical connection can be ensured.

  Further, the branching device is provided with a branch-side conductive member connected to each branch conductor, and the fastening member includes, in addition to the collective fastening of the branch conductor and the conductive member, It is desirable that the branch conductor and the branch-side conductive member can also be fastened.

  According to the above configuration, the conductor part of the branching device can be formed by a combination of the branching conductor and the branching side conductive member, and a dedicated fastening bolt or the like is not necessary, so that it is manufactured as an integrated object Compared to, it is possible to manufacture easily and inexpensively.

  The housing of the bus duct is provided with a bus duct side positioning portion for positioning the mounting position of the branch device, and the branch device is provided with a branch side positioning portion that is positioned with the bus duct side positioning portion. It is desirable that

  According to this configuration, when the branch device is attached to the bus duct, it can be easily positioned and fastened.

  The plurality of conductive members of the bus duct may be conductive connection members in a bus duct connection portion that electrically connects the first bus duct conductor and the second bus duct conductor by a bus duct side fastening member. desirable. In particular, the conductive member in the bus duct connecting portion is composed of a pair of connecting members arranged so as to sandwich the abutting portion between the end portion of the first bus duct conductor and the end portion of the second duct duct conductor. It is desirable that the first bus duct conductor and the second bus duct conductor are electrically connected by being fastened by a fastening member.

  According to this configuration, even when the bus duct has a bus duct side fastening member, the branch conductor and the connecting member are fastened together by the fastening member provided in the branching device, so that the bus duct side fastening member can be fastened together. Compared with the case where it wears, it can join firmly, and a strong tap-off branch structure can be easily installed in a bus duct by retrofit.

  In addition, the bus duct has a pair of connecting portions at least one of which is made of the conductive member and is arranged to be separated from each other and opposed to each other, and when the branch device is attached to the bus duct, Preferably, the branch conductor is inserted between the pair of connection portions, and the fastening member can fasten the branch conductor, the pair of connection portions, and the housing.

  According to the above configuration, the insertion-type branch conductor can be provided in the branch device.

  Further, the present invention made to solve the above problems is a branching device in which a plurality of branching conductors are projected downward, and when attached to a bus duct having a plurality of conductive members in a housing, a plurality of branching conductors are provided. Each of the branch conductors is in contact with the corresponding conductive member of the bus duct, and when attached to the bus duct, the plurality of branch conductors and the plurality of conductive members are collectively tightened. A fastening member that can be attached and a branch-side conductive member connected to each of the branch conductors, wherein the fastening member includes, in addition to the collective fastening of the branch conductor and the conductive member, The branch-side conductive member and the branch conductor are also fastened.

  According to the said structure, even if it does not provide a tap-off branch structure in advance in a bus duct, a tap-off branch structure can be retrofitted easily and electric power can be branched from a bus duct. Further, the conductor portion of the branch device can be formed by a combination of the branch conductor and the branch-side conductive member, and can be manufactured easily and inexpensively as compared with the case of manufacturing as a single body.

  Further, the present invention made to solve the above problems is a branching device in which a plurality of branching conductors are projected downward, and when attached to a bus duct having a plurality of conductive members in a housing, a plurality of branching conductors are provided. Each of the branch conductors is in contact with the corresponding conductive member of the bus duct, and when attached to the bus duct, the plurality of branch conductors and the plurality of conductive members are collectively tightened. The branch conductor is formed as a pair of conductors that are spaced apart from each other and arranged opposite to each other, and the lower end portion of at least one of the branch conductors is the other conductor It is deform | transformed so that it may contact | abut to the lower side edge part.

  According to the said structure, even if it does not provide a tap-off branch structure in advance in a bus duct, a tap-off branch structure can be retrofitted easily and electric power can be branched from a bus duct. Further, since the branch conductor insertion portion can be formed by deforming the end portion of the branch conductor without creating a separate portion, it can be easily and inexpensively manufactured.

  According to the present invention, it is possible to provide a bus duct branching system and a branching device capable of easily retrofitting a tap-off branching structure and branching power from the bus duct without providing a tap-off branching structure in the bus duct in advance. .

It is a figure for demonstrating the bus duct which comprises the bus duct branching system of 1st Embodiment of this invention, (a) is a top view, (b) is a side view. It is a schematic diagram which shows the cross section of the bus duct of 1st Embodiment of this invention, (a) is a schematic diagram which shows the cross section of the bus duct unit which comprises a bus duct, (b) is the cross section of the connection unit which comprises a bus duct. It is a schematic diagram shown. It is a schematic diagram for demonstrating the branch apparatus which comprises the bus duct branch system of 1st Embodiment of this invention, (a) is a top view, (b) is a side view. It is a mimetic diagram showing the section of the branch unit of the branching device which constitutes the bus duct branching system of a 1st embodiment of the present invention. It is the schematic diagram which showed the state with which the branch apparatus which comprises the bus duct branching system of 1st Embodiment of this invention was mounted | worn with the bus duct. It is the schematic diagram which showed the cross section of the state with which the branch apparatus which comprises the bus duct branch system of 1st Embodiment of this invention was mounted | worn with the bus duct. It is the figure which showed the modification of the branch side positioning part of the bus duct branch system of 1st Embodiment of this invention, (a) is a side view, (b) is a rear view. It is the schematic diagram which showed the state which mounted | wore the bus side branching system of 1st Embodiment of this invention with the branch side positioning part of the modification shown in FIG. It is a figure for demonstrating the bus duct which comprises the bus duct branching system of 2nd Embodiment of this invention, (a) is a side view of a bus duct, (b) is the model which showed the edge part of the conductor in the housing of a bus duct FIG. It is a schematic diagram which shows the cross section of the connection unit which comprises the bus duct of 2nd Embodiment of this invention. It is a side view of the branch apparatus which comprises the bus duct branch system of 2nd Embodiment of this invention. It is a schematic diagram which shows the cross section of the branch unit of the branch apparatus which comprises the bus duct branch system of 2nd Embodiment of this invention. It is the schematic diagram which showed the state with which the branch apparatus which comprises the bus duct branching system of 2nd Embodiment of this invention was mounted | worn with the bus duct. It is the schematic diagram which showed the cross section of the state with which the branch apparatus which comprises the bus duct branch system of 2nd Embodiment of this invention was mounted | worn with the bus duct. It is the figure which showed the modification of the branch apparatus of embodiment of this invention, (a) is a top view, (b) is a side view. It is a schematic cross section of the branch device shown in FIG.

  Hereinafter, a bus duct branching system according to an embodiment of the present invention will be described with reference to the drawings. The bus duct branching system of the present invention is not limited to the following embodiments (first and second embodiments) and other embodiments.

<< First Embodiment >>
First, the bus duct branching system according to the first embodiment will be described with reference to FIGS.
As shown in FIGS. 5 and 6, the bus duct branching system according to the first embodiment includes a bus duct 10 and a branching device 20 attached to the bus duct 10.
As will be described later, the housing of the bus duct 10 includes a pipe spacer 112 and a side plate 113 of the bus duct unit 11, and a connection side plate 123 and a connection upper and lower plates 30 of the connection unit 12, as shown in FIGS. It has become.

Here, the branching device 20 has one end of a plurality of branch conductors 40 (flat branch conductors 40) protruding downward (in the direction of the bus duct 10 when attached to the bus duct 10). When the branch device 20 is attached to the bus duct 10, one end portions of the plurality of branch conductors 40 are in contact with the corresponding conductive connection members 121 of the bus duct 10. In addition, the branching device 20 includes a “fastening tool 45 and a pressing member 43” that can fasten the plurality of branch conductors 40 and the plurality of conductive connection members 121 together when attached to the bus duct 10. A fastening member is provided (see FIGS. 3 and 4). The “fastener 45 and the pressing member 43” are arranged so that at least a part of the branching device 20 is disposed outside the housing of the bus duct 10 when the branch device 20 is attached to the bus duct 10.
In the housing of the bus duct 10, a plurality of sets of conductive connection members 121 and 121 (conductive members) corresponding to the plurality of branch conductors 40 of the branch device 20 are provided with a predetermined width apart. . The conductive connecting members 121 and 121 are arranged so as to face each other.
When the branch device 20 is attached to the bus duct 10, the branch conductor 40 of the branch device 20 is inserted between the conductive connection members 121 and 121 of the bus duct 10 and comes into contact therewith, and the fastener 45 and the pressing member 43. Thus, the plurality of branch conductors 40, the conductive connection members 121 and 121, and the housing of the bus duct 10 can be fastened together.

  According to said structure, even if it does not provide the tap-off branch structure in advance in the bus duct 10, a tap-off branch structure can be easily attached by retrofitting as needed.

  Next, each configuration of the bus duct branching system according to the first embodiment will be described in order.

First, the configuration of the bus duct 10 will be described with reference to FIGS. 1 and 2.
As shown in FIGS. 1 and 2, the bus duct 10 has a structure in which a conductor 111a with an insulation coating is covered with a housing, and the bus duct units 11 and 11 are connected to each other via a separate connection unit 12. Is formed. That is, the bus duct 10 of the first embodiment has a configuration including a plurality of bus duct units 11 and a connection unit 12 that connects the bus duct units 11 arranged adjacent to each other.

  As shown in FIG. 2A, the bus duct unit 11 includes, for example, a three-phase insulated conductor 111 (insulated coated conductor 111 formed by coating a flat plate-shaped power transmission conductor 111a with an insulator. ) Are arranged in parallel, and pipe spacers 112 having a substantially square shape in plan view are arranged on both sides in the width direction of the insulating coated conductor 111. The bus duct unit 11 includes a pair of side plates 113 and 113 each having a substantially U-shaped cross section, and a clamp member such as a bolt 114a and a nut 114b inserted into the side plate 113. It is fastened and fixed. Note that the end of the conductor 111a in the housing of the bus duct unit 11 is not covered with an insulator, and the inside of the housing of the bus duct unit 11 that is installed adjacently through the conductive connection member 121 of the connection unit 12. It is configured so that it can be electrically connected to the end of the conductor 111a (the end not covered with the insulator).

  The above-mentioned side plate 113 has a first reinforcing portion 113a extending at a substantially right angle from the insulating coated conductor 111 sandwiched between the upper and lower end edges of the side plate 113, and at the edge of the first reinforcing portion 113a. The second reinforcing portions 113b extend substantially at right angles in the directions facing each other, and the strength of the bus duct unit 11 and the bus duct 10 itself is maintained. In the bus duct unit 11, the pipe spacer 112 and the side plate 113 (including a bulging side portion 115 described later) correspond to the housing.

In addition, as shown in FIG. 2B, the connection unit 12 includes a conductive connection member 121 as a connection member for connecting the in-phase conductors 111a and 111a of the bus duct units 11 and 11 to be connected, an insulating separator 122, A connection side plate 123 that clamps them from the outside and a pressing member 124 disposed outside the connection side plate 123 are provided, and are tightened by a fastener 126 that is inserted through an insulating sleeve 125. Thus, the bus duct units 11 and 11 are connected to each other, and are temporarily fastened by the fastening tool 126 before the connection.
The insulating separator 122 is installed at a position that insulates between the conductors 111 a and 111 a of different phases including the conductive connecting member 121 and between the outermost conductor 111 a including the conductive connecting member 121 and the connection side plate 123.
Further, as shown in FIG. 1A, the connection side plate 123 is bent and formed in a substantially hat shape in a plan view, and at least a part of the pressing member 124 is accommodated in the concave portion 123a. .

When connecting the bus duct units 11 and 11 with the connecting unit 12 to form the bus duct 10, the end portions of the conductors 111 a and 111 a of the bus duct units 11 and 11 to be connected are inserted between the in-phase conductive connecting members 121 and 121. The bus duct side plate 113 and the connection side plate 123 are fixed with a fastening tool such as a bolt and nut, and then the temporarily fastened fastening tool 126 is fastened. Are fixed to the bus duct units 11 and 11 by screws or the like, and the open surfaces are closed to complete the connection between the bus duct units 11 and 11. In this way, the housing of the bus duct 10 includes the expansion portion expanded in the thickness direction of the bus duct in the connection unit 12 (the bulging side portion 115 of the left bus duct unit 11 in FIG. 1B and the right bulging side). A portion sandwiched between the portions 115). In the connection unit 12, the connection side plate 123 and the connection upper and lower plates 30 correspond to a housing.
The connection upper and lower plates 30 are configured to have a flat plate-like base portion 32 and reinforcing pieces 34 formed by bending and extending both side edges of the base portion 32 at substantially right angles.

Next, the branching device 20 will be described with reference to FIGS.
As shown in FIG. 3, the branching device 20 includes a box-shaped box 22 and a branching unit 60. The box 22 has a plate-shaped bottom surface 22a, and side walls 22b and 22b, front walls 22c, and a rear wall 22d as peripheral walls are erected from the bottom surface 22a, and a lid 22e that can be opened and closed is provided on the upper surface. It has been. In the box 22, the bottom surface 22a, the peripheral wall 22b, the front wall 22c, the rear wall 22d, and the lid 22e correspond to a housing.

A branch unit 60 having a branch conductor 40 projecting downward is fixed to the front wall 22c side of the box 22.
A fixing member 26 is provided on the rear wall 22d side of the bottom surface 22a. In the box 22, a breaker 23 and a connection conductor 24 (branch side conductive member) for electrically connecting the branch conductor 40 to the breaker 23 are installed (connected to each branch conductor 40, respectively). The conductor 24 is electrically connected), and although not shown in the drawing, the power is branched from the connection conductor 24 to the outside of the box 22 through the breaker 23.
The connection conductor 24 is disposed on the box body 22 so that the rear end side is disposed inside the box body 22 and the tip end side protrudes forward from the front wall 22c. The connection conductor 24 has a rear end portion connected to the breaker 23 and a front end portion connected to the branch conductor 40.

As shown in FIG. 4, the branch unit 60 includes a pair of branch conductors 40 (plate-like branch conductors 40) disposed on both sides in the thickness direction of the connection conductors 24 protruding from the box 22, and an insulating separator. 41, a branch side plate 42 arranged outside these, and a pressing member 43 further arranged outside the branch side plate 42, and a fastener 45 formed by inserting them into an insulating sleeve 44. The structure is tightened (the pressing member 43 and the fastening tool 45 correspond to fastening members). The pair of branch conductors 40 are arranged so as to be spaced apart from each other and opposed to each other.
The insulating separator 41 is installed at a position that insulates between the connection conductors 24 having different phases including the branch conductor 40 and between the outermost connection conductor 24 including the branch conductor 40 and the branch side plate 42. The insulating sleeve 44 has a hollow cylindrical shape with through holes penetrating both ends, and is installed in a state of penetrating the branch conductor 40 and the insulating separator 41. The pressing member 43 is formed with a bolt hole that communicates with the through hole of the insulating sleeve 44. Then, the bolts constituting the fastening tool 45 are inserted into the bolt holes of the pressing member 43 and the through holes of the insulating sleeve 44, and the fastening tool 45 is tightened so that “the pressing member 43 and the fastening tool 45” The connection conductor 24, the branch conductor 40, the insulating separator 41, the branch side plate 42, etc. "are fastened.
Further, as shown in FIG. 3A, the branch side plate 42 is formed such that both upper and lower ends are bent in a substantially hat shape in plan view, and at least a part of the pressing member 43 is accommodated in the concave portion 42a. It has become.

The branch unit 60 is provided with a cover 46 that covers from the upper surface to the front surface. The cover 46 has a flat plate-like upper surface base 46a covering the upper surface of the branch unit 60, a front base 46b formed by bending and extending a front edge of the upper surface base 46a downward substantially at a right angle, and a front of the front base 46b. It has a plurality of portions such as a front connection piece 46c formed by bending the end edge forward at a substantially right angle and a rear connection piece 46d formed by bending a rear edge of the upper surface base 46a upward at a substantially right angle. It has a configuration. Further, among the parts constituting the cover 46, each part (the upper surface base part 46a, the front surface base part 46b, the front connection piece 46c) excluding the rear connection piece 46d is formed so that the side and both edges of each part are substantially perpendicular. A reinforcing piece 46e that is bent and extended is formed.
In the branch unit 60, the branch side plate 42 and the cover 46 correspond to a housing. The branch conductor 40 is covered with a housing constituted by the branch side plate 42 and the cover 46 in a state in which a part (lower end portion) protrudes from the lower end of the branch side plate 42.
Further, the branch unit 60 can be configured such that a part or all of the branch unit 60 is accommodated inside the box 22 by extending the box 22 toward the branch unit 60 (in this case, the housing is covered with a housing). The broken branch unit 60 is further covered with the housing of the box 22).

  As shown in FIG. 4, the branch conductor 40 has a configuration similar to the conductive connection member 121 (FIG. 2) in the connection unit 12 described above, but its lower end extends below the lower end of the branch side plate 42. A step is provided so that the in-phase branch conductors 40 are in contact with each other at the tip portion. That is, the tip portions of the pair of branch conductors 40 are bent (deformed) to provide a step so that the tip portions of the in-phase branch conductors 40 and 40 come into contact with each other. Thereby, the insertion part 40a of the substantially same width | variety as the conductor 111a of the bus duct 10 is formed in the lower end of the branch conductors 40 * 40. Note that the insertion portion 40a may be formed by extending only the branch conductor 40 on one side downward and utilizing the end portion thereof, or the connection conductor 24 is formed in a substantially L shape in a side view. Then, it may be directly projected from the lower side of the branch unit 60 and formed using the end thereof (that is, in this case, the connection conductor 24 itself serves as both the branch side conductive member and the branch conductor). The configuration is appropriate. The pair of branch conductors 40 and 40 is deformed into a shape in which at least one lower end portion thereof is bent toward the other branch conductor 40 side, and the other branch conductor 40 has a lower end portion. You may form so that it may contact | abut.

  Next, the construction procedure for attaching the branch device 20 to the bus duct 10 will be described.

  First, the operator removes the connection upper and lower plates 30 on the upper side of the connection unit 12 of the bus duct 10 and loosens the fastening tool 126 of the connection unit 12. Thereafter, the branch device 20 is moved so that the branch unit 60 is positioned in the vicinity of the connection unit 12, and the pressing member 43 (fastening) of the branch device 20 is inserted into the recess 123a of the connection side plate 123 of the bus duct 10 (connection unit 12). A part of the member is aligned and inserted from above, and the branching device 20 is brought close to contact with the bus duct 10. That is, in this case, the recess 123a is a bus duct side positioning portion, and the pressing member 43 is a branch side positioning portion.

  As shown in FIG. 6, the insertion portion 40 a (branch conductor 40) of the branching device 20 is inserted into the housing of the bus duct 10, and the in-phase conductive connection member of the connection unit 12 constituting the bus duct 10. A state in which the conductive connecting member 121 is inserted between 121 and 121 and is in contact with the conductive connecting member 121 or 121 (a state where the insertion portion 40a and the conductive connecting member 121 are in contact with each other, or a state in which the conductive connecting member 121 is slightly spaced apart from each other is widely used. Included). Further, the insulating separator 41 of the branching device 20 is inserted into a clearance for securing a creepage distance provided in the insulating separator 122 of the connection unit 12.

  Next, the operator tightens the fastener 126 of the connection unit 12 and also tightens the fastener 45 of the branch unit 60, and the first reinforcing portion 113a (see FIG. 2) of the bus duct 10 with the fixing member 26 (see FIG. 5). , See FIG. 5). Note that the fastening with the fastening tool 126 may be performed by re-tightening the fastening tool 126 once loosened or may be fastened with a separately prepared fastening tool 126.

  At this time, the fastening members (fastening tool 45 and pressing member 43) of the branch unit 60 are arranged on the branching device 20 side on the plural (in this case, three-phase) connection conductors 24 and on both sides in the thickness direction. The connection conductor 24 and the branch conductor 40 are electrically connected by tightening the pair of branch conductors 40 and 40, the insulating separator 41, and the pair of branch side plates 42 and 42 disposed outside the pair of branch conductors 40 and 40. In addition, the connection conductor 24 and the branch conductor 40 are mechanically fixed to the housing of the branch device 20 (in this case, the branch side plate 42).

  On the other hand, the fastening member (fastening tool 45 and pressing member 43) of the branch unit 60 has a plurality of (in this case, three-phase) insertion portions 40a (branch conductors 40) and the thickness direction on the bus duct 10 side. By tightening the pair of conductive connection members 121 and 121 disposed on both sides of each, the insulating separator 122, and the pair of connection side plates 123 and 123 disposed on the outside thereof, the branch conductor 40 and the conductive member are electrically connected. While electrically connecting with the connection member 121, the branch conductor 40 and the conductive connection member 121 are mechanically fixed to the housing of the bus duct 10 (in this case, the connection side plate 123).

  As described above, according to the first embodiment, even if the bus duct 10 is not provided with a tap-off branching structure in advance, by attaching the branching device 20, the tap-off branching structure by the branching conductor 40 can be easily retrofitted. The power can be branched from 10.

  Further, according to the first embodiment, not only the branch conductor 40 and the conductive connection member 121 are fastened by the fastening members (fastening member 45 and pressing member 43) of the branching device 20, but also the housing of the bus duct 10. Since the (connection side plate 123) is also tightened together, a tap-off branch structure that is mechanically and electrically strong with a simple structure can be installed in the bus duct.

The above effect will be described in detail below.
Specifically, the connection portion of the branch conductor 40 and the conductive connection member 121 is an important portion that realizes electrical contact between the bus duct 10 and the branch device 20, and is desired to maintain a stable connection. It is rare. However, if the structure is such that only the branch conductor 40 and the conductive connecting member 121 are fastened by the fastening members (fastening tool 45 and pressing member 43), when an external force is applied to the branching device 20, The force (particularly, the load applied in the vicinity of the branch conductor 40) is transmitted to the conductive connection member 121 via the branch conductor 40. That is, when a structure in which only the branch conductor 40 and the conductive connecting member 121 are fastened by the fastening members (fastening tool 45 and the pressing member 43) is employed, the structure is stable between the branch conductor 40 and the conductive connecting member 121. There is a possibility that the electrical connection cannot be maintained.
On the other hand, as in the first embodiment, by adopting a structure in which the housing (connection side plate 123) of the bus duct 10 is also fastened together with fastening members (fastening tool 45 and pressing member 43), the branching device 20 is provided. The applied external force is dispersed not only in the conductive connection member 121 but also in the housing (connection side plate 123) of the bus duct 10 via the branch conductor 40. Therefore, according to 1st Embodiment, the force added to the connection part of the branch conductor 40 and the electroconductive connection member 121 will be reduced by the part to disperse | distribute, and it will lead to maintenance of more stable electrical connection. Moreover, since it is connected to the housing (connection side plate 123) of the bus duct 10, there is an effect that the mechanical strength is simply improved.

  Furthermore, in 1st Embodiment, the fastening member (fastening tool 45 and the press member 43) of the branch apparatus 20 is the fastening, and the housing (connection side plate 123) of the bus duct 10 and the housing (branch side plate) of the branch unit 60 are fastened. 42). As a result, when an external force is applied to the branch device 20, the force (particularly, the force applied to the vicinity of the branch conductor 40) is first transmitted to the conductive connection member 121 via the branch conductor 40. It is transmitted to the housing (connection side plate 123) of the bus duct 10 via the housing (branch side plate 42). That is, the force applied to the connection portion of the branch conductor 40 and the conductive connection member 121 is reduced by that amount, which leads to the maintenance of a more stable electrical connection. Moreover, since the housing (connection side plate 123) of the bus duct 10 and the housing (branch side plate 42) of the branching device 20 are connected, there is an effect that mechanical strength is simply improved. As a result, a simple structure and mechanically and electrically strong tap-off branch structure can be installed in the bus duct 10.

  Furthermore, in 1st Embodiment, the fastening member (fastening tool 45 and the pressing member 43) of the branching device 20 is not only the fastening of the branch conductor 40 and the conductive connection member 121 on the bus duct 10 side, but also the branching device 20. On the side, the branch conductor 40 and the connection conductor 24 (branch side conductive member) are fastened. As a result, the conductor portion of the branch device 20 can be formed by a combination of the branch conductor 40 and the connection conductor 24 (branch side conductive member), and a dedicated fastening bolt or the like is unnecessary, so Compared to the case of manufacturing, manufacturing can be performed easily and inexpensively.

<< Modification of First Embodiment >>
In the first embodiment, both the “housing of the bus duct 10 (connection side plate 123)” and the “housing of the branching device 20 (branch side plate 42)” are joined together by the fastening members (fastening tool 45 and pressing member 43). Although the configuration to be fastened is described, it is not particularly limited to this. The fastening members (fastener 45 and pressing member 43) are configured not to fasten both or one of “the housing of the bus duct 10 (connection side plate 123)” and “the housing of the branch device 20 (branch side plate 42)”. May be. In this case, the fastening members (fastening tool 45 and pressing member 43) may be arranged inside the housing so as to cover them so as not to touch them carelessly.
Moreover, although 1st Embodiment described the case where the fastening member is the fastening tool 45 and the press member 43, it is not specifically limited to this. In short, the fastening member in the first embodiment is that the plurality of branch conductors 40 and the plurality of conductive connection members 121 can be fastened together when the branch device 20 is attached to the bus duct 10. For example, when only the fastener 45 is a fastening member, or when the connection side plate 123 is strengthened and the connection side plate 123 is included in the fastening member, another member is prepared and fastened. In addition to various configurations such as when included in a member, the configuration includes a wide range of configurations in which the configurations are partially extracted, and configurations in which the extracted configurations are further arbitrarily combined.

  Further, in the first embodiment, the ends of the in-phase conductors 111a and 111a of the bus duct units 11 and 11 are sandwiched and fixed by a pair of conductive connection members 121 and 121 (connection members) to be electrically connected. Although the case where the branch conductor 40 of the branch device 20 is connected to the conductive connection member 121 has been described, it is not particularly limited thereto. As a connection member for connecting the in-phase conductors 111a and 111a, at least one of the connection members may be the conductive connection member 121, and the other may be formed of a non-conductive member.

  In the first embodiment, the case where the end portion of the connection conductor 24 is sandwiched and fixed by the pair of branch conductors 40 and 40 is described. However, the present invention is not particularly limited thereto, and the branch conductor is provided only on one side. 40 may be disposed and a non-conductive member may be disposed on the other side. In this case, an effect similar to that of the first embodiment can be obtained by extending one of the branch conductors 40 downward and forming the insertion portion 40a using the end portion.

In the first embodiment, the case where the fastening tool 126 of the bus duct 10 (connection unit 12) is loosened before the branch device 20 is attached and the fastening tool 126 is fastened again after the bus duct 10 is attached is described. However, it is not particularly limited to this.
For example, the total thickness dimension of the insertion portions 40a and 40a of the branching device 20 is set to a dimension slightly smaller than the separation distance of the conductive connection members 121 and 121 (thickness dimension of the conductor 111a of the bus duct 10), or The distance between the conductive connecting members 121 and 121 may be set to a dimension (a dimension that slightly separates) slightly larger than the total thickness dimension of the insertion portions 40a and 40a at the insertion portion of the insertion portion 40a of the branching device 20. May be. By doing so, the insertion portion 40a of the branching device 20 can be inserted between the conductive connecting members 121 and 121 without loosening the fastener 126. Even in this case, the insertion portion 40a (branch conductor 40) and the conductive connection member 121 can be electrically connected by tightening the fastening members (fastening tool 45 and pressing member 43) after the insertion portion 40a is inserted. The same effects as those of the first embodiment described above can be obtained.

  Moreover, in 1st Embodiment, the recessed part 123a of the connection side board 123 of the bus duct 10 (connection unit 12) was used as the bus duct side positioning part, and the case where the pressing member 43 of the branch apparatus 20 was used as the branch side positioning part was described. However, it is not particularly limited to this. You may comprise like the modification shown below.

  Specifically, for example, the branch side positioning unit 70 shown in FIG. The branch side positioning portion 70 is formed in a substantially reverse concave shape (formed in a substantially reverse concave plate shape) in a side view, and is fastened to the side surface (the branch side plate 42) of the branch device 20 (the branch unit 60). The member (fastener 45 and pressing member 43) can be avoided and mounted. When the branch-side positioning unit 70 is attached to the branch device 20 (branch unit 60), both end portions 71 and 71 protrude downward from the branch device 20 (branch unit 60). . The lower end of the end 71 is bent obliquely outward and a fitting hole 72 is provided above the end 71.

Thus, when the operator attaches the branch device 20 to the bus duct 10, the operator moves the branch device 20 so that the portion of the branch unit 60 is located in the vicinity of the connection unit 12, and then fits the branch side positioning portion 70. Alignment is performed so that the screw 123 b (bus duct side positioning portion) of the connection side plate 123 enters the hole 72, and the branching device 20 is brought close to contact with the bus duct 10. At this time, since the lower portion of the end portion 71 of the branch side positioning portion 70 is bent obliquely in a direction away from the connection side plate 123, the branch side positioning portion 70 is pushed outward by the screw 123b.
Then, as shown in FIG. 8, when the screw 123b reaches the position of the fitting hole 72, the screw 123b is fitted into the fitting hole 72, and the entire branch side positioning portion 70 returns to its original shape, and branches to the bus duct 10. The positioning of the device 20 is complete. In this case, the position of the branch conductor 40 (insertion portion 40a) of the branch device 20 with respect to the bus duct 10 in the insertion depth direction is also determined, which is easy to use. In the first embodiment, it is more convenient to use the concave portion 123a (bus duct side positioning portion) and the pressing member 43 (branch side positioning portion) described above.

<< Second Embodiment >>
Next, the bus duct branching system according to the second embodiment will be described with reference to FIGS.

  Here, FIG. 9 is a figure for demonstrating the bus duct which comprises the bus duct branching system of 2nd Embodiment, (a) is a side view of a bus duct, (b) is the edge part of the conductor in the housing of a bus duct It is the schematic diagram which showed. FIG. 10 is a schematic diagram showing a cross section of a connection unit constituting the bus duct of the second embodiment. FIG. 11 is a side view of a branching device constituting the bus duct branching system of the second embodiment. FIG. 12 is a schematic diagram illustrating a cross section of a branching unit of a branching device constituting the bus duct branching system of the second embodiment. FIG. 13 is a schematic view showing a state in which the branching device constituting the bus duct branching system of the second embodiment is mounted on the bus duct. FIG. 14 is a schematic diagram showing a cross-section in a state where the branching device constituting the bus duct branching system of the second embodiment is mounted on the bus duct.

  In the following description, the same or similar components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted. Moreover, in 2nd Embodiment, the structure (structure for electrically connecting with the branch apparatus 20) which has a function as a conductive member by the side of the bus duct 10 is "conductive connection member 121" of 1st Embodiment. It is changed to “conductor (conductor end portion) 211a”. Further, the “upper connection upper and lower plates 30” in the first embodiment are changed to “connection upper plates 230”, the “branch conductor 40” in the first embodiment is changed to “branch conductor 240”, and the connection unit 12 and some of the members of the branch unit 60 are changed.

  First, the structure different from 1st Embodiment among the bus ducts 10 of 2nd Embodiment is demonstrated.

In 2nd Embodiment, the structure (structure for electrically connecting with the branch apparatus 20) which has a function as a conductive member among the structures of the bus duct 10 is a conductor end from the conductive connection member 121 of 1st Embodiment. The portion (conductor) 211a is changed.
Specifically, as shown in FIG. 9, the conductor 111 a in the housing of the bus duct 10 (the reference numeral 111 in the figure indicates an insulation-coated conductor in which the conductor 111 a is insulated) is at its end (conductor end). Part) 211a is formed in a shape extending upward in a substantially L shape in a side view. Further, as shown in FIGS. 9 and 10, the connection unit 12 of the second embodiment has a conductor end (conductor) 211a extending upward as compared to the end of the conductor 111a of the first embodiment. The members other than the conductive connection member 121 are extended upward as compared with the first embodiment. Moreover, the connection upper board 230 is arrange | positioned at the open surface of the upper side of the connection unit 12 of 2nd Embodiment.

  The connection upper plate 230 has a base portion 231 bent in a hat shape in a side view in accordance with the shape of the connection unit 12 of the second embodiment (a shape protruding upward), and the side of the base portion 231 on each plane. Reinforcing pieces 232 (see FIG. 10) are formed by bending and extending the both end edges at substantially right angles.

  Next, the structure different from 1st Embodiment among the branching apparatuses 20 of 2nd Embodiment is demonstrated.

The branch device 20 according to the second embodiment has a configuration in which a pair of branch conductors 240 (plate-like branch conductors 240) are installed on both sides in the thickness direction of the connection conductor 24 instead of the pair of branch conductors 40. Yes. The pair of branch conductors 240 are disposed so as to be separated from each other and face each other. Further, as shown in FIG. 12, the branch conductor 240 is different from the branch conductor 40 of the first embodiment in that a portion corresponding to the insertion portion 40a is not formed at the lower end. And as shown in FIG. 11, the branch unit 60 of 2nd Embodiment is arrange | positioned upwards entirely according to the shape (shape which protruded upwards) of the connection unit 12 of 2nd Embodiment.
The pair of branch conductors 240 and 240 may be configured separately as described above. For example, the pair of branch conductors 240 and 240 is formed as a single body by bending a metal plate into a substantially U-shape opened downward in a side view. In short, the configuration is appropriate.

  The construction procedure for attaching the branching device 20 to the bus duct 10 in the bus duct branching system of the second embodiment configured as described above will be described.

Specifically, first, the operator removes the connection upper plate 230 of the connection unit 12 of the bus duct 10 and loosens the fastening tool 126 of the connection unit 12. Thereafter, the branch device 20 is moved so that the branch unit 60 is positioned in the vicinity of the connection unit 12, and the pressing member 43 (fastening) of the branch device 20 is inserted into the recess 123a of the connection side plate 123 of the bus duct 10 (connection unit 12). A part of the member is aligned and inserted from above, and the branching device 20 is brought close to contact with the bus duct 10.
As shown in FIG. 14, the branch conductors 240 and 240 of the branch device 20 are inserted into the housing of the bus duct 10. Then, the conductor end (conductor) 211a of the connection unit 12 of the bus duct 10 is inserted between the branch conductors 240 and 240 of the branching device 20, and these branch conductors 240 and 240 abut on the conductor end (conductor) 211a. The state (including a state in which the branching conductor 240 and the conductor end 211a are in contact with each other and a state in which the branching conductor 240 and the conductor end 211a are opposed to each other slightly apart) are included.

  Next, the operator fastens the fastening tool 126 of the connection unit 12 and fastens the fastening tool 45 of the branch unit 60, and holds the first reinforcing portion 113 a of the bus duct 10 with the fixing member 26. Note that the fastening with the fastening tool 126 may be performed by re-tightening the fastening tool 126 once loosened or may be fastened with a separately prepared fastening tool 126.

  At this time, the fastening members (fastening tool 45 and pressing member 43) of the branch unit 60 are arranged on the branching device 20 side on the plural (in this case, three-phase) connection conductors 24 and on both sides in the thickness direction. The connection conductor 24 and the branch conductor 240 are electrically connected by tightening the pair of branch conductors 240 and 240, the insulating separator 41, and the pair of branch side plates 42 and 42 disposed on the outside thereof. In addition, the connection conductor 24 and the branch conductor 240 are mechanically fixed to the housing of the branch device 20 (in this case, the branch side plate 42).

  On the other hand, the fastening members (fastening tool 45 and pressing member 43) of the branch unit 60 are arranged on the bus duct 10 side with a plurality of (in this case, three-phase) branch conductors 240 and 240 and conductors disposed between them. The branch conductor 240 and the conductor end portion 211a are electrically connected by tightening the end portion 211a (conductive member), the insulating separator 122, and the pair of connection side plates 123 and 123 disposed on the outside thereof. In addition, the branch conductor 240 and the conductor end 211a are mechanically fixed to the housing of the bus duct 10 (in this case, the connection side plate 123).

  Thus, also in the second embodiment, even if the tap-off branching structure is not provided in advance in the bus duct 10, the tap-off branching structure by the branch conductor 240 can be easily retrofitted by attaching the branching device 20, so that the bus duct 10 can be retrofitted. The power can be branched.

  That is, in the bus duct branching system of the second embodiment, the male-female fitting structure for connecting the conductive member on the bus duct 10 side and the branch conductor 240 on the branching device 20 side is opposite to that of the bus duct branching system of the first embodiment. It has become. The effect similar to 1st Embodiment can be acquired also by the structure of such 2nd Embodiment.

As described above, according to the present embodiment (first and second embodiments and modifications thereof), the tap-off branch structure can be easily retrofitted even if the bus duct 10 is not provided with a tap-off branch structure in advance. Electric power can be branched from the bus duct.
The present invention is not limited to the above-described embodiments (first and second embodiments and other embodiments), and various modifications can be made within the scope of the gist.

  For example, in the first and second embodiments and the modifications thereof, the case where the insulation-coated bus duct 10 is used has been described. However, the present invention is not limited to this and may be an air-insulated bus duct.

  Moreover, although the case where the branching device 20 was attached to the connection unit 12 of the bus duct 10 was described in the first and second embodiments and the modifications thereof, the present invention is not limited to this. For example, in the case of an insulation-coated bus duct, a part of the bus duct unit 11 is expanded in the thickness direction of the bus duct for connecting plug-in terminals to form an expanded portion, and the exposed conductors 111a are separated from each other. In the case of being arranged, the branching device 20 of the second embodiment may be attached thereto, or a connecting member (at least one may be a conductive connecting member) so as to sandwich each conductor 111a. ) May be used for attaching the branch device 20 of the first embodiment. Further, in the case of an air insulated bus duct, an opening is provided at an arbitrary position of the housing, and the branching device 20 of the first embodiment or the second embodiment is attached thereto as in the case of the above-described insulated sheathed bus duct. You may do it.

  Further, in the first embodiment and its modification, the ends of the in-phase conductors 111a and 111a of the bus duct units 11 and 11 are fastened by the pair of conductive connecting members 121 and 121 (conductive members) to the fastener 126 (bus duct side tightening). The case where the electrical connection (butt connection) is performed by tightening with the attachment tool) and the branch conductor 40 of the branch device 20 is connected to the conductive connection member 121 has been described. Is not to be done. For example, when the ends of the in-phase conductors 111a and 111a of the bus duct units 11 and 11 are overlapped and tightened with a fastener (bus duct side fastener) and electrically connected (overlap connection), A part of the conductor 111a is extended upward like the conductor end 211a of the second embodiment, and the extended portion (conductive member) is like the branch conductor 240 of the branch device 20 of the second embodiment. An electrical connection may be realized with a simple structure. Regardless of the configuration, the conductive member of the bus duct 10 and the branch conductor of the branch device 20 are branched separately from the fasteners (bus duct 10 side fasteners) used to connect the bus duct units 11 to each other. Since it is fastened by a fastening tool (branch device side fastening tool) provided on the device 20 side, it is strongly coupled as compared with a case where fastening is performed only with a fastening member on the bus duct 10 side. Therefore, a strong tap-off branch structure can be easily installed on the bus duct after retrofitting.

  In the first and second embodiments and the modifications thereof, the case where the branch device 20 is provided with the breaker 23 has been described. However, the present invention is not limited to this, for example, as shown in FIGS. 15 and 16. A configuration without a breaker is also possible.

Hereinafter, the branching device 320 shown in FIGS. 15 and 16 will be described in detail, but the same or similar components as those in the first embodiment and the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.
FIG. 15 is a view showing a modification of the branch device of the present embodiment (first and second embodiments), where (a) is a plan view and (b) is a side view. FIG. 16 is a schematic cross-sectional view of the branching device shown in FIG.

As shown in FIG. 16, the branch device 320 includes a plurality of (three in this case) branch conductors 340 and a pair of conductive connection members 350 (branch) disposed on both sides of each branch conductor 340 in the thickness direction. Side conductive member), an insulating separator 41, a branch side plate 42 arranged outside these, and a pressing member 43 further arranged outside the branch side plate 42, and these are provided as insulating sleeves. Fastening is performed with a fastening tool 45 inserted through 44 (the pressing member 43 and the fastening tool 45 correspond to fastening members).
The insulating separator 41 is a position that insulates between the branch conductors 340 having different phases including the conductive connection member 350 (branch side conductive member) and between the outermost branch conductor 340 including the conductive connection member 350 and the branch side plate 42. Is installed.

  At least one of the pair of conductive connection members 350 corresponding to each of the three-phase branch conductors 340 is extended upward, and the outer two phases of the three phases are further outward by approximately 90 °. The conductor connection portion 351 (part for connecting a conductor such as a cable) is formed by being bent and extended. Each of the conductor connecting portions 351 is formed with a hole 352 (see FIGS. 15A and 15B) for connecting a conductor such as a cable.

  The branch device 320 is provided with a cover 346 that covers from the upper surface to both the front surface and the rear surface. The cover 346 has a base portion 347 bent into a hat shape in a side view (see FIG. 15B), and is reinforced by bending and extending both side edges of each side of the base portion 347 at substantially right angles. A piece 348 is formed. That is, in the branch device 320, the branch side plate 42 and the cover 346 correspond to a housing. The cover 346 is not always essential, and can be omitted when the entire branching device 320 is covered with a box later (that is, only the branching side plate 42 serves as the housing of the branching device 320). ).

  Even such a branching device 320 can be retrofitted to the bus duct 10 in the same manner as the branching device 20 of the first and second embodiments and the modifications thereof, and thus the first and second embodiments described above. And the effect similar to the modification can be acquired.

  As mentioned above, although the bus duct branching system of 1st and 2nd embodiment and its modification was demonstrated, this invention is not limited to this, If it is a range which can implement this invention, each of embodiment and other embodiment A configuration in which the configuration is changed as appropriate, a configuration in which each configuration in the embodiment or modification is partially extracted, or a part or all of each configuration in the embodiment or modification is arbitrarily extracted and combined. Such forms are also widely included.

DESCRIPTION OF SYMBOLS 10 ... Bus duct 11 ... Bus duct unit 111 ... Insulation covering conductor 111a ... Conductor 112 ... Pipe spacer 113 ... Side plate 113a ... 1st reinforcement part (side plate)
113b ... 2nd reinforcement part (side plate)
114a ... bolt 114b ... nut 115 ... bulging side 211a ... conductor end (conductor)

DESCRIPTION OF SYMBOLS 12 ... Connection unit 121 ... Conductive connection member 122 ... Insulation separator 123 ... Connection side plate 123a ... Recessed part (connection side plate)
124 ... Pressing member 125 ... Insulating sleeve 126 ... Fastening tool 30 ... Connection upper / lower plate 32 ... Base (connection upper / lower plate)
34 ... Reinforcing piece (connection upper and lower plates)
230 ... Connection upper plate 231 ... Base (connection upper plate)
232 ... Reinforcing piece (connection upper plate)

20 ... Branch device 22 ... Box 22a ... Bottom surface (box)
22b ... side wall (box)
22c ... Front wall (box)
22d ... Rear wall (box)
22e ... Lid (box)
23 ... Breaker 24 ... Connecting conductor (branch side conductive member)
26 ... Fixing member 60 ... Branch unit 40 ... Branch conductor (branch unit)
40a: Insertion section (branch conductor (branch unit))
41. Insulating separator (branching unit)
42 ... Branch side plate (branch unit)
42a ... recess (branch side plate (branch unit))
43 ... Pressing member (branching unit)
44 ... Insulation sleeve (branching unit)
45 ... Fastener (branch unit)
46 ... Cover (branching unit)
46a ... Upper surface base (cover (branch unit))
46b ... Front base (cover (branch unit))
46c ... front connection piece (cover (branch unit))
46d: Rear connection piece (cover (branch unit))
46e ... Reinforcing piece (cover (branch unit))

70 ... branch side positioning part 71 ... end (branch side positioning part)
72 ... fitting hole (branch side positioning part)

320 ... Branch device 340 ... Branch conductor
346 ... cover 347 ... base (cover)
348 ... Reinforcing piece (cover)
350: Conductive connection member 351: Conductor connection portion (conductive connection member)
352 ... hole (conductive connecting member)

Claims (9)

A bus duct branching system having a bus duct provided with a plurality of conductive members in a housing and a branching device in which a plurality of branching conductors protrude downward,
When the branch device is attached to the bus duct, each of the plurality of branch conductors comes into contact with the corresponding conductive member of the bus duct,
Furthermore, the branching device is provided with a fastening member capable of fastening the plurality of branch conductors and the plurality of conductive members together when attached to the bus duct. Branch system.   The bus duct branching system according to claim 1, wherein the fastening member can fasten a housing of the bus duct together with the branch conductor and the conductive member. The branching device comprises a housing;
The bus duct branching system according to claim 2, wherein the bus duct housing and the branching device housing are connectable by fastening of the fastening member. The branch device is provided with a branch-side conductive member connected to each branch conductor,
4. The fastening member is capable of fastening the branch conductor and the branch side conductive member in addition to the collective fastening of the branch conductor and the conductive member. The bus duct branching system according to any one of the above. The bus duct housing is provided with a bus duct side positioning portion for positioning the mounting position of the branch device,
5. The bus duct branching system according to claim 1, wherein the branching device is provided with a branching side positioning part that is positioned with the bus duct side positioning part.   The plurality of conductive members of the bus duct are conductive connection members in a bus duct connection portion that electrically connects the first bus duct conductor and the second bus duct conductor by a bus duct side fastening member. The bus duct branching system according to any one of claims 1 to 5. The bus duct has a pair of connecting portions, at least one of which is made of the conductive member and is spaced apart from each other and arranged opposite to each other.
When the branch device is attached to the bus duct, the branch conductor is inserted between a pair of the connection portions,
The bus duct branch system according to any one of claims 1 to 6, wherein the fastening member is capable of fastening the branch conductor, the pair of connection portions, and the housing. A branching device in which a plurality of branching conductors protrude downward,
When attached to a bus duct having a plurality of conductive members in the housing, each of the plurality of branch conductors comes into contact with the corresponding conductive member of the bus duct,
A fastening member capable of fastening a plurality of the branch conductors and a plurality of the conductive members together when attached to the bus duct;
A branch-side conductive member connected to each branch conductor;
The branching device, wherein the fastening member can fasten the branch-side conductive member and the branch conductor in addition to the collective fastening of the branch conductor and the conductive member. A branching device in which a plurality of branching conductors protrude downward,
When attached to a bus duct having a plurality of conductive members in the housing, each of the plurality of branch conductors comes into contact with the corresponding conductive member of the bus duct,
A fastening member capable of fastening the plurality of branch conductors and the plurality of conductive members together when attached to the bus duct;
The branch conductors are formed as a pair of conductors that are spaced apart from each other and arranged opposite to each other, such that at least one lower end thereof is in contact with the lower end of the other conductor. A branching device that is modified.

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