JP2001186641A - Bus duct connecting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bus duct connecting apparatus which can accurately connect a bus duct and improve the working efficiency. SOLUTION: In this bus duct connecting apparatus which connects the end of conductor of bus duct inserted into insulation separator and is tightened with a tightening tool inserted to an insulation sleeve provided through the insulation separators, the cross-sectional shape of the insulation sleeve is formed in the predetermined shape other than the circle, and an aperture which is a little larger than the specified shape similar to the predetermined shape is formed to the insulation separator. The specified shape is selected as required as polygonal shape or elliptical shape, but the polygonal shape is recommended because non-rotating condition can surely be attained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bus duct connecting apparatus, and more particularly to a bus duct connecting apparatus for collectively tightening conductors of each phase of an insulated conductor close contact type or an interphase reduced type.

[0002]

2. Description of the Related Art Conventionally, a bus duct connection device for simultaneously tightening conductors of each phase of an insulated conductor close contact type or a phase reduction type has been used, for example, by abutting the ends of the same phase conductors of a bus duct to be connected. Attach a conductive connecting member for electrically connecting the ends together, cover the outermost conductor ends from both outer sides with a duct side plate joining plate, and connect between the different-phase conductor ends and between the outermost conductor ends and the duct side plate. There is a connection unit in which an insulating separator for insulating between joint plates is sandwiched, and these are collectively temporarily tightened by a fastener having a circular insulating sleeve both inside and outside.

The connection unit is assembled to an end of one of the bus ducts, and an end of the other bus duct, which is connected to face the other end, is inserted and fitted into the connection unit. The corresponding open surfaces of the connection units are covered with cover members, which are an upper plate and a lower plate. As a result, the conductor ends of the bus duct are connected with each other in a state where they abut each other.

As another bus duct connection device, for example, conductor ends of the same phase of a bus duct to be connected are overlapped with each other, covered with a duct side plate joining plate from both outer sides of the outermost conductor ends, and connected between different phase conductor ends. There is also a connection unit in which an insulating separator for insulating between the outermost conductor end and the duct side plate joining plate is sandwiched, and these are collectively tightened by a fastener having a circular insulating sleeve both inside and outside.

[0005] Corresponding open surfaces of the connection unit are also covered with cover members, which are an upper plate and a lower plate, and the conductor ends of the bus duct are connected to each other in an overlapping state. The duct side plate joining plate in the conductor end portion overlapping type connection device may be formed integrally with the end of the housing of the bus duct main body or may be provided separately from the housing.

[0006]

However, in the above-mentioned bus duct connection device, since the movement of the insulating separator and the like in the width direction of the conductor end is not regulated, the conductor ends are inserted and fitted to each other to connect. In doing so, the insulating separator etc. may be shifted in the width direction of the conductor end, and in addition, depending on the connection type, it may also be shifted in the length direction of the conductor end,
It took time to arrange them.

In addition, since the insulating separator and the like may rotate together with the fastening of the fastener, there is a possibility that the bus ducts may be connected to each other while the insulating separator and the like are deviated from the prescribed positions. Was.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and the insulating separator and the like may shift in the width direction or the length direction of the conductor end when the conductor ends are inserted and fitted to each other and connected. The present invention provides a bus duct connection device that can prevent co-rotation of an insulating separator or the like when tightening a fastener, can connect a bus duct straight and accurately, and can improve workability. Aim.

[0009]

According to the present invention, there is provided a bus duct connecting apparatus for connecting a conductor end of a bus duct inserted between insulating separators, and fastening a conductor inserted through an insulating sleeve penetrating the insulating separator. In the bus duct connection device which is collectively tightened by the tool, the insulating sleeve is formed in a predetermined shape other than a circular cross section, and an opening substantially similar to the predetermined shape and slightly larger than the insulating sleeve is provided with the insulating sleeve. It is characterized by being formed on a separator.

The predetermined shape of the insulating sleeve is not particularly limited as long as the insulating sleeve cannot rotate with respect to the insulating separator, such as a polygon or an ellipse. It is suitable. Also, the bus duct connection device is a conductor butt type in which conductor ends of the same phase to be connected face each other, and a conductive connection member is attached thereto to connect the conductor ends. It is applicable to both of the superposition methods.

Further, in the above bus duct connection device, the predetermined shape formed on the conductive connection member is substantially equal to the predetermined shape formed on the outer periphery of the convex rib formed along the periphery of the opening of the insulating separator. A similar shaped opening is fitted.

Further, in the above bus duct connecting apparatus, a duct side plate connecting plate having a locking portion provided on the inner surface is interposed on both outer sides, and the duct side plate connecting plate and the outermost insulating separator are connected to the locking portion. Characterized by being positioned via For example, the locking portion is formed of a locking piece protruding from the inner surface of the duct side plate, and the locking piece is locked to upper and lower sides of the insulating separator to perform positioning.

Further, in the above bus duct connecting device, the insulating separator is formed by laminating a first insulating plate having a large area and a second insulating plate having a small area, and the outermost insulating separator is provided with the second insulating plate on the outer side. A plate is arranged, and the locking portion is locked to the second insulating plate. For example, at least one first insulating plate having a large planar area and at least one second insulating plate having a small planar area are laminated to form one insulating separator, and the locking portion is formed of a second insulating plate. It is locked by the upper and lower sides to perform positioning.

Further, in the above bus duct connecting apparatus, an outwardly projecting flange is formed at at least one end of the insulating sleeve, and the duct side plate connecting plate provided at least on one side is provided with the flange. An opening slightly larger than the insulating sleeve is formed in a shape substantially similar to the predetermined shape of the insulating sleeve, and a locking area substantially similar to the flange and slightly larger than the flange is provided around the opening. It is characterized by the following. For example, the locking area is an inward concave portion provided on the outer surface of the duct side plate joining plate, an insulating sleeve is inserted into the opening provided substantially at the center of the inward concave portion, and the flange is locked in the inward concave portion. To be done.

[0015]

According to the bus duct connection device of the present invention in the butt connection system, the lap connection system, etc., the insulating sleeve covering the fastener is formed in a predetermined shape other than a circular shape such as a polygonal cross section. By fitting into an opening substantially similar to the predetermined shape formed on the separator, the outer peripheral edge of the convex rib formed substantially similar to the predetermined shape along the periphery of the opening of the insulating separator. By fitting an opening having a shape substantially similar to the predetermined shape formed in the conductive connection member, a width direction or a length direction of the conductor end portion of the insulating separator or the conductive connection member when the bus duct is connected. , And the co-rotation of the insulating separator and the conductive connecting member at the time of batch tightening by the fastener can be restricted and suppressed.

In addition to the fact that the outermost insulating separator and the insulating separators other than the outermost one are positioned and fixed by the insulating sleeve having the predetermined shape, a locking piece provided on the inner surface of the duct side plate joining plate, etc. By positioning the duct side plate joining plate and the outermost insulating separator via the locking portion, it is possible to prevent the duct side plate joining plate from being displaced and co-rotating.

Further, the insulating separator is constituted by laminating a first insulating plate having a large plane area and a second insulating plate having a small plane area, and the outermost insulating separator is provided with the second insulating plate disposed outside. By locking the locking portion to the second insulating plate and positioning the duct side plate joining plate and the outermost insulating separator, the creepage distance between the different-phase conductors can be sufficiently maintained, and The creepage distance between the conductor end located on the outside and the locking piece provided on the inner surface of the duct side plate joining plate can be sufficiently maintained.

An outwardly projecting flange is formed at at least one end of the insulating sleeve, and an opening slightly larger than the insulating sleeve is formed in the duct side plate at a shape substantially similar to the predetermined shape of the insulating sleeve. By providing a locking area such as an inward recess slightly larger than the flange in a shape substantially similar to the flange around the opening, and by inserting the flange of the inserted insulating sleeve into the locking area,
The insulating sleeve, the insulating separator, the duct side plate joining plate, etc. are positioned and fixed in a predetermined shape of the insulating sleeve, and the duct side plate joining plate and the insulating sleeve are positioned by the locking area and the flange. Co-rotation can be prevented.

In the case of a bus duct and a bus duct connecting apparatus which are connected by a conductor overlapping method, a recess is formed at a conductor end substantially in the center in the conductor width direction, and the insulating sleeve is positioned in the recess. The present invention can be implemented by a configuration or the like that performs bus duct connection.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a bus duct connecting apparatus according to the present invention.
1 to 5 relate to a first embodiment of a bus duct connection device using a conductor butt system according to the present invention. FIG. 1 is a front view showing a connection state in the bus duct connection device of the first embodiment. FIG. FIG. 3 is a vertical sectional view taken along the line AA of FIG. 2, FIG. 4 is a front view showing the insulating separator in the first embodiment, and FIG. 5 is a duct side plate in the first embodiment. It is a partial exploded perspective view showing a joint board, an insulating separator, and an insulating sleeve.

In FIGS. 1 to 5, a plurality of insulating separators 2 are arranged at predetermined intervals in a bus duct connection device 1, and an insulating separator 2 is provided between the insulating separators 2.
And a pair of duct side plate connecting plates 4 having an insertion hole 41 for a bolt 61 substantially at the center on the outermost sides of the insulating separators 2 located on both sides. 4 are provided. An insulating sleeve 5 is penetrated through the insulating separator 2, and a bolt 61, which is a fastener 6, which penetrates substantially the center of the insulating separator 2, the conductive connecting member 3, and the duct side plate connecting plate 4, is provided on the insulating sleeve 5. Through one side. On the other hand, the bolt 61 is screwed to a nut 62 via a disc spring 63, and the bus duct connection device 1 comprises a bolt 61 and a nut 62.
It is tightened all at once. When the bus duct 10 is not connected, the bus duct connecting device 1 is temporarily fastened with the bolts 61 and the nuts 62, which are the fasteners 6, and is configured as a temporarily assembled unit.

As shown in FIGS. 3 and 5, the insulating sleeve 5 is formed as a square column having a predetermined cross-sectional shape of a polygon, and a through hole 51 for a bolt 61 is provided at the center in the longitudinal direction. ing. The shape of the insulating sleeve 5 is not limited to the present embodiment, and may be any suitable shape as long as the cross-sectional shape such as a polygon such as a square or a hexagon or an ellipse is formed in a predetermined shape other than a circle. The shape may be any suitable shape, as long as the bolt 61 can be inserted therethrough and does not interfere with the fastener 6 when tightened.

The insulating separator 2 is provided to insulate between the different-phase conductor ends 11a of the bus duct 10 to be described later and between the outermost conductor end 11a and the duct-side connecting plate 4. As shown in FIGS. 3 to 5, the opening 21 has a rectangular shape and a substantially central portion through which the insulating sleeve 5 is inserted.
Are formed. The opening 21 is a square substantially similar to the square having the predetermined shape, and is formed slightly larger than the square of the insulating sleeve 5.

The opening 21 has an inner surface of the outer insulating separator 2 or an inner insulating separator 2 positioned inside.
Convex ribs 22 are formed along the periphery on both surfaces of
The convex rib 22 has a predetermined shape or a square substantially similar to the square of the opening 21, and is slightly larger than the opening 21. Further, the inner surface of the outer insulating separator 2 or the inner insulating separator 2
Positioning projections 23 are formed in the vicinity of the four corners on both surfaces.

The conductive connecting member 3 is for electrically connecting the in-phase conductor ends 11a of the bus duct 10 to be described later, and has a rectangular shape substantially similar to the insulating separator 2 and is slightly smaller than the insulating separator 2. Is formed. As shown in FIGS. 3 and 5, an opening 31 which is substantially similar to the square having a predetermined shape of the insulating sleeve 5 or the square of the convex rib 22 of the insulating separator 2 is formed substantially at the center of the conductive connecting member 3. The conductive connection member 3 is formed slightly larger than the rib 22, and the conductive connection member 3 is positioned by fitting the opening 31 to the outer peripheral edge of the convex rib 22. Further, since the conductive connection member 3 is locked by the positioning protrusions 23 provided near the four corners of the insulating separator 2, it is possible to further reduce erroneous attachment of the conductive connection member 3 to the insulating separator 2. It has a configuration.

That is, the insulating separator 5 is placed on the insulating sleeve 5.
Of the conductive connection member 3 are fitted.
Is fitted on the outer peripheral edge of the convex rib 22 of the insulating separator 2 to position and fix the insulating separator 2 and the conductive connecting member 3, and the insulating separator 2 and the conductive connecting member 3 Are not rotatable, and movement in the length direction and the width direction of the conductor end 11a of the bus duct 10, which will be described later, is restricted.

In this embodiment, only the insulating separator 2 and the conductive connecting member 3 are fixed at the same position. However, as in the case of the overlapping bus duct connecting apparatus 1 described later, the duct side plate joining plate 4 is fixed. The duct side plate connecting plate 4 may also be fixed at the same position by forming an opening substantially similar to the predetermined shape of the insulating sleeve 5 and inserting and fitting the insulating sleeve 5 into the opening. It is suitable.

The bus duct 10 to be connected in a butt manner has three phases of a plate-shaped conductor 11 covered with an insulating coating, and the tip of each conductor 11 is a conductor end 11a exposed from the insulating coating. Conductor 1 at the end of the bus duct 10
Bus duct side plates 12 are provided on both outer sides of the conductor end 1 and the conductor end 11a.

When the bus ducts 10 are connected to each other by the bus duct connecting device 1, one of the conductive connecting members 3, 3 provided between the insulating separators 2, 2 is connected to the other. End 1 of each bus duct 10
1a is inserted from one side to a predetermined position, and the duct side plate 4 is inserted into the bus duct side plate 12 to a predetermined position, and the inner surface of the bus duct side plate 12 contacts the outer surface of the duct side plate 4 Thus, the bus duct side plate 12 of one bus duct 10 and the duct side plate joining plate 4 are fixed with screws 7 or the like.

Similarly, each conductor end 11a of the other bus duct 10 is inserted from the other to a predetermined position between the two conductive connecting members 3.3, and the duct side plate connecting plate 4.
4 is inserted into the bus duct side plates 12 to a predetermined position, and the bus duct side plate 12 of the other bus duct 10 and the duct side plate joining plate 4 are fixed with screws 7 or the like. At this time, the conductor ends 11a, 11a of the opposing bus ducts 10, 10 are in an abutted state.

Finally, the temporarily tightened bolts 61 and nuts 62 are fully tightened, thereby connecting the bus ducts 10 to be connected. The corresponding open surfaces located above and below the connected bus duct connection device 1 cover and close the connection upper plate 8a and the connection lower plate 8b, respectively. Connection upper plate 8a
The connecting lower plate 8b has a substantially U-shaped vertical cross section, is fitted on the outside of the bus duct side plate 12, and is fixed to the bus duct 10 by a screw 81 or the like screwed from the outside.

In the butt type bus duct connection device 1 of the first embodiment, the opening 31 of the conductive connection member 3 is provided.
Are fitted to the outer peripheral edge of the convex rib 22 of the insulating separator 2,
The opening 21 of the insulating separator 2 fits into the outer shape of the insulating sleeve 5, and the fastener 6 does not interfere with the inner shape of the insulating sleeve 5. Therefore, the insulating separator 2 and the conductive connecting member 3
When the conductor end 11a of the bus duct 10 is inserted and the bolt 61 and the nut 62 are tightened, the connection operation is facilitated without shifting in the width and length directions of the conductor end 11a, and the insulation after the connection is completed. The positions of the separator 2 and the conductive connection member 3 can be accurately fixed.

Next, a second embodiment of the bus duct connection device of the present invention will be described. 6 to 10 relate to a second embodiment of a bus duct connection device using a conductor butting method, FIG. 6 is an exploded perspective view of the bus duct connection device of the second embodiment, and FIG. 7 is a connection diagram of the second embodiment. FIG. 8 is a perspective view showing a locked state by a stopper, FIG. 8 is a partially cutaway plan view showing a disconnected state of the bus duct connection device of the second embodiment, FIG. 9 is a partially cutaway plan view showing a connected state, and FIG. FIG. Note that the second embodiment will be described focusing on points different from the first embodiment.

The bus duct connecting device 1 shown in FIGS. 6 to 10 has four insulating separators 2 each having an opening 21.
Are disposed at predetermined intervals, and adjacent insulating separators 2
The conductive connecting members 3, 3 are internally provided between each other, the conductive connecting members 3 are a total of six sheets, and a pair of duct side plate connecting plates 4,. 4
Are arranged. The insulating separator 2 and the conductive connecting member 3 are penetrated by an insulating sleeve 5 having a square cross section and a bolt 61 is inserted through the insulating sleeve 5.
Are clamped together by the fasteners 6 while being held between the duct outer side plate connecting plates 4 on both outer sides.

The insulating separator 2 of the present embodiment is formed by laminating a first insulating plate 2a having a large plane area and a second insulating plate 2b having a small plane area, and bonding the first insulating plate 2a and the second insulating plate 2b with an adhesive or the like. The insulating separator 2 is effective for securing a creepage distance of a certain distance or more. Two insulating separators 2 provided inside
Is laminated by sandwiching one second insulating plate 2b with two first insulating plates 2a, thereby forming one insulating separator 2b.
The two insulating separators 2 on the outside are provided with a second insulating plate 2b on the outside and a first insulating plate 2a on the inside.
Are laminated to form one insulating separator 2.

In the insulating separator 2, the inner surface of the second insulating plate 2b of the outermost insulating separator 2 serves as the contact surface of the first insulating plate 2a, and at least the upper side as shown in FIG. An inclined surface 2b1 for fitting a locking piece 42 described later is formed on the lower side, and a space is formed between the first insulating plate 2a and the second insulating plate 2b at the position of the inclined surface 2b1. The first insulating plate 2a is provided with a conductive connecting member 3 in contact therewith.

On the inner surface of the duct side plate 4, there are provided four locking pieces 42, which are hook-shaped projections. Locking piece 4
2 is disposed at a position slightly wider than the width of the second insulating plate 2b, and is located between the first insulating plate 2a and the second insulating plate 2b formed by the inclined surface 2b1 of the second insulating plate 2b. The locking piece 42 can be fitted into the space, and the space between the locking piece 42 and the second insulating plate 2b is fitted from the lateral direction of the duct side plate joining plate 4, and the upper and lower sides of the second insulating plate 2b It is supported by a locking piece 42. At the time of fitting, for example, the second insulating plate 2 b is inserted so as to slide between the locking pieces 42.

By adopting a configuration in which the locking pieces 42 are fitted,
When the duct side plate joining plate 4 is collectively tightened with the fasteners 6, the duct side plate joining plate 4 and the outermost insulating separator 2 are locked by the locking pieces 42, so that mutual positional deviation and co-rotation are prevented. In addition to the fact that the outermost insulating separator 2 and the inner insulating separator 2 are prevented from misalignment and co-rotation with each other by the insulating sleeve 5 having a predetermined shape, misalignment and co-rotation can be prevented in the entire bus duct connection device 1. .

When assembling the bus duct connection device 1 as a temporarily assembled connection unit, for example, the outermost insulating separator 2 is fitted and fixed to the locking piece 42 of the duct side plate joining plate 4, and one of the duct side plate joining plates 4 is fixed. Then, the insulating sleeve 5 is inserted from the insulating separator 2 side, and the bolt 61 is inserted from the duct side plate joining plate 4 side. The conductive connection member 3 is disposed in contact with the insulating separator 2. Next, the two insulating separators 2 arranged inside are fitted into the insulating sleeve 5, the other duct side plate connecting plate 4 fitted with the outermost insulating separator 2 is fitted, and the bolt 61 is screwed into the nut 62. The tentatively assembled state is maintained by loosely tightening.

When connecting the bus ducts 10 with the bus duct connecting device 1 of the second embodiment, the conductor end 11a is connected to the insulating separators 2 and 2 so that the bus duct side plates 12 come into contact with the inner surface of the duct side plate joining plate 4. One of the bus ducts 10 is inserted so as to be disposed between the conductive connecting members 3 and 3, and the edge of the bus duct side plate 12 is inserted into the second insulating plate 2b provided on the outermost insulating separator 2. Insert until it touches. After inserting to the above position, the duct side plate joining plate 4 and the bus duct side plate 12 are fastened with screws 7 or the like. Similarly, the other bus duct 10 is inserted and fastened. Next, the temporarily fastened fastener 6 is fully tightened, and finally, the upper and lower corresponding open surfaces are covered and closed with the connection upper plate 8a and the connection lower plate 8b, and are fixed to the bus duct 10 with screws 81 or the like.

The bus duct connection device 1 is configured such that the outermost second insulating plate 2b regulates the insertion position of the bus duct side plate 12, so that the bus duct 10 can be easily and accurately positioned. It is possible to connect straight, and it is not necessary to arrange the screw holes and the like of the screws 7 from outside the bus duct connection device 1. Further, by providing the locking pieces 42 and the like, the displacement of the entire bus duct connection device 1 and the co-rotation thereof can be prevented, thereby facilitating the connection operation. Also, since the upper and lower sides of the outermost second insulating plate 2b are locked via the locking pieces 42, the duct side plate connecting plate 4
The bolt insertion hole 41 of the insulating separator 2 and the opening 21 which is the insulating sleeve insertion hole of the insulating separator 2 can be easily joined together, and the duct side plate joining plate 4 and the like can be easily connected without dropping after the joining. .

Next, a third embodiment of the bus duct connection device of the present invention will be described. 11 to 14 relate to a third embodiment of a bus duct connection device using a conductor butting method. FIG. 11 is an exploded perspective view of the bus duct connection device of the third embodiment, and FIG. FIG. 13 is a partially cutaway plan view showing the connection state, and FIG. 14 is a partially cutaway side view showing the connection state. Note that the third embodiment will be described focusing on points different from the first and second embodiments.

In the bus duct connecting apparatus 1 shown in FIGS. 11 to 14, four insulating separators 2 are arranged at predetermined intervals, and conductive connecting members 3.3 are provided between adjacent insulating separators 2. A total of six conductive connecting members 3 are provided inside, and a pair of duct side plate connecting plates 4 is disposed on the outermost sides of the insulating separators 2 located on both outer sides. An insulating sleeve 5 having a square cross-sectional shape of a predetermined shape is penetrated through the insulating separator 2 and the conductive connecting member 3, and a bolt 61 is inserted through the insulating sleeve 5.
The insulating separator 2 and the conductive connecting member 3 are collectively tightened by the fastener 6 in a state where the insulating separator 2 and the conductive connecting member 3 are sandwiched by the duct side plate connecting plates 4 on both outer sides.

The insulating sleeve 5 has a fastener insertion hole 51
A substantially rectangular flange 52 projecting outward from the insertion hole 51 at one side edge in the direction is formed, and an insulating sleeve 5 is provided substantially at the center of the duct side plate connecting plate 4.
An opening 43 which is substantially similar to the predetermined square shape and slightly larger than the insulating sleeve 5 is formed, and the opening 43 can be inserted through the insulating sleeve 5. Further, on the outer side surface of the duct side plate 4, around the opening 43, there is provided a concave locking area 44 substantially similar to the flange 52 and slightly larger than the flange 52.

The insulating sleeve 5 is inserted through the opening 43 until the flange 52 is fitted in the locking area 44 of the duct side plate 4, and the insulating separator 2 is fitted in the insulating sleeve 5. The duct side plate connecting plate 4 at the side end is passed through the insulating sleeve 5 and is collectively tightened by the fastener 6. The duct side plate 4 and the insulating sleeve 5 are flanged 5
The mutual displacement and co-rotation are regulated by the fitting and locking of the locking area 2 and the locking area 44, and combined with the prevention of the displacement and co-rotation by the insulating sleeve 5 and the insulating separator 2, positioning is performed as a whole and co-rotation is performed. This is a configuration that is prevented.

In the third embodiment, displacement and co-rotation are prevented by fitting the flange 52 of the insulating sleeve 5 into the concave locking area 44, but the present invention is limited to the above embodiment. However, for example, a convex locking area is formed on the outer surface of the duct side plate connecting plate 4, and the flange 52 of the insulating sleeve 5 is fitted into the convex locking area, thereby displacing and shifting the position. You may make it prevent rotation.
In this case, it is preferable that the bus duct side plate 12 of the bus duct 10 to be connected is inserted so as to be in contact with the outer side surface of the duct side plate joining plate 4, and the duct side plate joining plate 4 or the bus duct is tightened by the fastener 6. The deformation of the side plate 12 can be prevented beforehand.

When assembling the bus duct connection device 1 as a temporarily assembled connection unit, the flange 52 is provided on one of the duct side plate connecting plates 4 from the outside with the locking area 44.
The insulating sleeve 5 is inserted until it is fitted and locked, the bolt 61 is inserted through the insertion hole 51 of the insulating sleeve 5, and the conductive connecting member 3 is fitted in the inserted insulating sleeve 5 in a contact state. The insulating separators 2 are sequentially fitted, and the other duct side plate connecting plate 4 is fitted. Then bolt 6
1 is screwed into the nut 62 and loosely fastened to maintain the temporarily assembled state.

When connecting the bus ducts 10 with the bus duct connecting device 1 of the third embodiment, the conductor end 11a is connected to the insulating separators 2 and 2 so that the bus duct side plate 12 is in contact with the inner surface of the duct side plate joining plate 4. One of the bus ducts 10 is inserted so as to be disposed between the conductive connecting members 3 and 3, and is inserted until the edge of the bus duct side plate 12 comes into contact with the edge of the concave locking area 44. . After inserting to the above position, the duct side plate joining plate 4 and the bus duct side plate 12 are fastened with screws 7 or the like. Similarly, the other bus duct 10 is inserted and fastened. Next, the temporarily tightened fastener 6 is fully tightened, and finally, the connection upper plate 8 is placed on the corresponding upper and lower open surfaces.
a. Cover and cover the connection lower plate 8b, and fix it to the bus duct 10 with screws 81 or the like.

Since the bus duct connecting device 1 is configured such that the edge of the concave locking area 44 regulates the insertion position of the bus duct side plate 12, the bus duct 10 can be straightened easily and accurately. It is possible to connect the bus duct connection device 1
Since there is no need to arrange them from outside, connection work becomes easy.

Next, a fourth embodiment of the bus duct connection device of the present invention will be described. 15 to 17 relate to a bus duct connection device by a conductor superposition method, FIG. 15 is a front view showing a connection state of the bus duct connection device of the fourth embodiment, and FIG. 16 is a connection state of the fourth embodiment. 17 is a partially cut plan view, and FIG.
FIG. 4 is a vertical cross-sectional view as seen from the arrow B.

In FIGS. 15 to 17, the bus duct connecting device 1 is provided with four insulating separators 2 at predetermined intervals, and a pair of ducts is provided on the outermost sides of the insulating separators 2 located on both outer sides. Side plate connecting plates 4 are provided.
An insulating sleeve 5 is inserted into the insulating separator 2 and the duct side plate 4, and a bolt 61 penetrates the insulating sleeve 5 from one side via a disc spring 63. On the other hand, the bolt 61 is screwed to a nut 62 via a disc spring 63, and the bus duct connection device 1 comprises a bolt 61 and a nut 62.
It is tightened all at once. When the bus duct 10 is not connected, the bus duct connection device 1 is temporarily fastened with the fasteners 6 to form a temporarily assembled unit.

As shown in FIG. 17, the insulating sleeve 5 has a columnar shape having a square cross section of a predetermined shape, and has an insertion hole 51 for a bolt 61 at the center in the longitudinal direction. The shape of the inner shape is appropriate, and any shape may be used as long as the bolt 61 can be inserted therethrough and does not interfere with the fastener 6 at the time of tightening.

The insulating separator 2 is provided between the different-phase conductor ends 11a of the bus duct 10 and the outermost conductor end 11a.
a and an opening 21 through which the insulating sleeve 5 is inserted is formed substantially at the center. The opening 21 is a square substantially similar to the square having the predetermined shape, and
Is formed slightly larger than the square of. Similarly, the duct side plate joining plate 4 that covers the outermost conductor end 11a and the outermost insulating separator 2 from both outer sides also has an opening 43 through which the insulating sleeve 5 is inserted substantially at the center. The opening 43 is also a square substantially similar to the square having the predetermined shape, and is formed slightly larger than the square of the insulating sleeve 5.

An opening formed at a predetermined position so as to be substantially similar to the square having the predetermined shape so that the insulating sleeve 5 can be inserted and fitted into the conductor end 11a of the bus duct 10 to be connected. A portion 11a1 is provided, and the opening 11a1 is formed slightly larger than the square of the insulating sleeve 5.

When connecting the bus ducts 10 with the bus duct connecting device 1 of the superposition type, the inner surface of the bus duct side plate 12 is brought into contact with the outer surface of the duct side plate joining plate 4 and between the insulating separators 2. The conductor ends 11a, 11a of the opposing bus ducts 10, 10 are overlapped and inserted to predetermined positions. The opening 43 of the duct side plate 4 and the opening 1 of the conductor end 11a
1a1, the insulating sleeve 5 is inserted into the opening 21 of the insulating separator 2 at a time, and the bus ducts 10 are connected by tightening with the fastener 6. The opening 11a1 of the conductor end 11a is elongated in the longitudinal direction of the conductor 11 so that the end is substantially similar to the predetermined shape, and the opening 11a1 of the conductor end 11 to be inserted is fitted into the insulating sleeve 5. Such a configuration is also possible.

Corresponding open surfaces located above and below the overlapped bus duct connection device 1 in which connection has been completed are connected to the connection upper plate 8 in the same manner as in the butt connection bus duct connection device 1.
a, Cover with the connecting lower plate 8b. The connection upper plate 8a and the connection lower plate 8b have a substantially U-shaped cross section, are fitted to the outside of the bus duct side plate 12, and are fixed to the bus duct 10 by screws 81 screwed from outside the connection upper plate 8a and the connection lower plate 8b.

In the bus duct connection device 1, the insulating sleeve 5 of the fastener 6 is formed by connecting the duct side plate connecting plate 4 and the conductor end 11.
a) Since the fastener 6 is fitted to the insulating separator 2 and the fastener 6 does not interfere with the inner shape of the insulating sleeve 5, misalignment and co-rotation can be prevented.

The bus duct connection device of the present invention is not limited to the first to fourth embodiments, but can be expanded and modified as follows.

First, in the above embodiment, the description has been given of the three-wire bus duct 10, but the present invention can also be applied to a bus duct connecting device other than the three-wire bus duct. Although the insulating sleeve 5 of the above embodiment is square, it may be a polygon having more than a triangle and a pentagon, and may be any polygon such as a rectangle, a trapezoid, a rhombus, a star, etc., instead of a regular polygon. It may be applied if it is not circular. In the above-described embodiment, the connection device 1 for the bus duct 10 of the insulated conductor 11 has been described. However, in the air-insulated bus duct in which the bare conductor is provided, the conductor ends are collectively tightened and connected via the insulating separator. Also applies.

Further, the connection configuration of the bus duct is not limited to the above embodiment, but can be changed without changing the gist of the present invention. Further, the fastening locations and the number of fastenings of the fasteners of the bus duct connection device are not limited to the above embodiment. Further, a configuration such as a combination of the above embodiments is also included unless the gist of the present invention is changed.

Further, in the above-described superposed type bus duct connection device 1 and the like, the duct side plate connecting plate 4 is provided separately from the bus duct side plate 12, but is not limited to this. The dual-use configuration may be connected to or integrally formed with the end of the bus duct 10 to be connected in advance, thereby reducing the number of components and leading to cost reduction.

[0062]

According to the bus duct connecting apparatus of the present invention, when the conductor ends of the bus duct to be connected are inserted and connected to each other, the insulating separator or the like is shifted in the width direction or the length direction of the conductor end. In addition, it is possible to prevent the insulating separator and the like from rotating together when the fastener is fastened. That is, it is possible to prevent the entire bus duct connection device from being displaced and co-rotating. Therefore, the bus duct can be connected straight and accurately, and the work of inserting and fitting the conductor end and the work of tightening the fastener are facilitated, thereby improving the workability.

[Brief description of the drawings]

FIG. 1 is a front view showing a connection state in a first embodiment of a bus duct connection device using a conductor butt system according to the present invention.

FIG. 2 is a partially cut-away plan view showing a connection state in the first embodiment of the bus butt connection device according to the conductor butting method of the present invention.

FIG. 3 is a vertical sectional view taken along the line AA in FIG. 2;

FIG. 4 is a front view showing the insulating separator of the first embodiment.

FIG. 5 is a partially exploded perspective view showing a duct side plate joining plate, an insulating separator, and an insulating sleeve of the first embodiment.

FIG. 6 is an exploded perspective view of the second embodiment of the bus duct connection device based on the conductor butting method of the present invention.

FIG. 7 is a perspective view showing a locked state by a locking piece in the second embodiment.

FIG. 8 is a partially cut-away plan view showing a non-connection state of the second embodiment of the bus duct connection device based on the conductor butting method of the present invention.

FIG. 9 is a partially cut-away plan view showing a connection state in a second embodiment of the bus duct connection device based on the conductor butting method of the present invention.

FIG. 10 is a partially cut-away side view showing a connection state in the second embodiment of the bus duct connection device based on the conductor butting method of the present invention.

FIG. 11 is an exploded perspective view of a third embodiment of the bus duct connection device based on the conductor butting system of the present invention.

FIG. 12 is a partially cut-away plan view showing a non-connection state in the third embodiment of the bus duct connection device using the conductor butting method of the present invention.

FIG. 13 is a partially cut-away plan view showing a connection state in the third embodiment of the bus duct connection device according to the conductor butt system of the present invention.

FIG. 14 is a partially cut-away side view showing a connection state in a third embodiment of the bus duct connection device according to the conductor butting method of the present invention.

FIG. 15 is a front view showing a connection state in the fourth embodiment of the bus duct connection device based on the conductor overlapping method of the present invention.

FIG. 16 is a partially cut-away plan view showing a connection state in a fourth embodiment of the bus duct connection device based on the conductor overlapping method of the present invention.

FIG. 17 is a vertical sectional view taken along the line BB in FIG. 16;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bus duct connection device 2 Insulating separator 2a First insulating plate 2b Second insulating plate 22 Convex rib 23 Positioning convex portion 3 Conductive connecting member 4 Duct side plate joining plate 42 Locking piece 44 Locking area 5 Insulating sleeve 52 Flange 6 Tightening Attachment 10 Bus duct 11a Conductor end 12 Bus duct side plate 21, 31, 43, 11a1 Opening

Claims (5)

[Claims] 1. A bus duct connecting device in which conductor ends of a bus duct inserted between insulating separators are connected and collectively tightened by a fastener inserted into an insulating sleeve penetrating the insulating separator. A bus duct, wherein the insulating sleeve is formed in a predetermined shape other than a circular cross-sectional shape, and an opening substantially similar to the predetermined shape and slightly larger than the insulating sleeve is formed in the insulating separator. Connection device. 2. An opening having a shape substantially similar to the predetermined shape formed on the conductive connection member is fitted to an outer peripheral edge of a convex rib formed along a peripheral edge of the opening of the insulating separator. The bus duct connection device according to claim 1, wherein the bus duct connection device is combined. 3. A duct side plate joining plate having an engaging portion provided on an inner surface is interposed on both outer sides, and the duct side plate joining plate and the outermost insulating separator are positioned via the engaging portion. The bus duct connection device according to claim 1 or 2, wherein: 4. The insulating separator is formed by laminating a first insulating plate having a large area and a second insulating plate having a small area, and the outermost insulating separator has the second insulating plate disposed outside. The bus duct connection device according to claim 3, wherein a stop portion is locked to the second insulating plate. 5. An insulating sleeve having at least one end formed with an outwardly projecting flange, and a duct-side connecting plate provided on at least one side having a shape substantially equal to a predetermined shape of the insulating sleeve. An opening having a similar shape and slightly larger than the insulating sleeve is formed, and a locking area substantially similar to the flange and slightly larger than the flange is provided around the opening. The bus duct connection device according to 1, 2, 3 or 4.