Busbar unit

Abstract

To provide a busbar unit that can improve production efficiency. [Solution] In the electrical junction box, the busbar unit comprises a plurality of busbars 10 formed in a flat plate shape, extending along directions that intersect each other, and arranged to overlap along the plate thickness direction (height direction Z), and a cover 20 which has insulating properties, is interposed between adjacent busbars 10 arranged in the height direction Z, and is attached to one of the busbars 10a. The busbars 10a have projections 15 provided at their ends in the width direction, and the cover 20 can be attached to the busbars 10a by avoiding interference with the projections 15 when positioned on the regular mounting side A with respect to the busbars 10a, and has an interference portion 24 that interferes with the projections 15 when positioned on the non-regular mounting side located on the opposite side of the regular mounting side in the height direction Z, making it impossible to attach to the busbars 10a.

Description

Technical Field

[0001] The present invention relates to a bus bar unit.

Background Art

[0002] For example, Patent Document 1 discloses an electrical connection box including a plurality of bus bars and an insulating member provided at an intersection portion of the bus bars that intersect three-dimensionally.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the electrical connection box described in the above Patent Document 1, it is necessary to prepare an insulating member according to the shape of the bus bar, and it is necessary to assemble the insulating member in a specific orientation with respect to the bus bar. Therefore, there is room for further improvement in terms of production efficiency.

[0005] The present invention has been made in view of the above circumstances, and an object thereof is to provide a bus bar unit capable of improving production efficiency.

Means for Solving the Problems

[0006] To achieve the above objective, the busbar unit according to the present invention comprises: a plurality of busbars formed in a flat plate shape, extending along directions intersecting each other, and arranged overlapping along the thickness direction; and an insulating cover interposed between adjacent busbars arranged in the thickness direction and attached to one of the busbars, wherein the busbars have projections provided at their ends in the width direction intersecting the extending direction and the thickness direction, and the cover has an interference portion that, when positioned on the normal mounting side facing the other busbar in the thickness direction, can be attached to that busbar by avoiding interference with the projections, and when positioned on the non-normal mounting side located on the opposite side of the normal mounting side in the thickness direction, it interferes with the projections and cannot be attached to that busbar. [Effects of the Invention]

[0007] The busbar unit according to the present invention has the effect of improving production efficiency. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a schematic perspective view of the busbar unit according to this embodiment. [Figure 2] Figure 2 is a schematic perspective view of the cover according to this embodiment. [Figure 3] Figure 3 is a schematic perspective view of the cover according to this embodiment. [Figure 4] Figure 4 is a perspective view showing the cover according to this embodiment positioned on the normal mounting side of the first busbar and attached to the first busbar. [Figure 5] Figure 5 is a cross-sectional view of AA shown in Figure 4. [Figure 6] Figure 6 is a perspective view showing the cover according to this embodiment positioned on the non-standard mounting side of the first busbar. [Figure 7]Figure 7 is a schematic perspective view illustrating a modified example of the method of using the cover according to this embodiment. [Figure 8] Figure 8 is a perspective view showing the cover according to this embodiment positioned on the normal mounting side of the second busbar and attached to the second busbar. [Figure 9] Figure 9 is a cross-sectional view of BB shown in Figure 8. [Figure 10] Figure 10 is a perspective view showing the cover according to this embodiment positioned on the non-standard mounting side of the second busbar. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described in detail below with reference to the drawings. However, the present invention is not limited by these embodiments. Furthermore, some of the components in the following embodiments are substituted or substantially identical to those easily substituted by those skilled in the art.

[0010] [Embodiment] The busbar unit 1 according to this embodiment is applicable, for example, to an electrical junction box 100 used in a vehicle. The electrical junction box 100 is mounted on a vehicle such as an automobile and incorporated into a wire harness. A wire harness is a bundle of multiple wiring materials used for power supply and signal communication to connect various devices mounted on a vehicle, and the multiple wiring materials W are connected to each device using connectors, etc. In addition to the above configuration, the electrical junction box 100 is composed of electronic components such as connectors, relays, fuses, capacitors, branching sections, various busbars, and electronic control units, and these are all integrated and housed inside a housing 110. The electrical junction box 100 is connected, for example, between a power source such as a battery and various electronic devices mounted in the vehicle via wiring materials, etc. The electrical junction box 100 distributes the power supplied from the power source to various electronic devices in the vehicle. The electrical junction box 100 may also be called a junction box, fuse box, relay box, etc., but in this embodiment, these are collectively referred to as an electrical junction box.

[0011] As shown in Figure 1, the busbar unit 1 comprises a plurality of busbars 10 that extend in directions intersecting each other and are arranged to overlap along the plate thickness direction, and a cover 20 that is attached to the busbars 10. In this embodiment, the busbar unit 1 is configured such that the cover 20 is shaped to prevent it from being attached to the busbars 10 in the wrong orientation, and is shaped to be properly attached to each of the busbars 10 that are arranged to overlap along the plate thickness direction, thereby realizing a configuration that can improve production efficiency. The components of the busbar unit 1 will be described in detail below with reference to Figures 1 to 10.

[0012] In the following explanation, of the three intersecting directions, the first direction will be referred to as the "first width direction X," the second direction as the "second width direction Y," and the third direction as the "height direction Z." Here, the first width direction X, the second width direction Y, and the height direction Z are mutually orthogonal. The first width direction X typically corresponds to the depth direction of the electrical junction box 100. The second width direction Y typically corresponds to the width direction of the electrical junction box 100. The height direction Z typically corresponds to the thickness direction of the busbar 10, the stacking direction of multiple busbars 10 arranged in overlapping positions along the thickness direction, and the height direction of the electrical junction box 100. In the height direction Z, the upper side is referred to as the top or upper part, and the lower side is referred to as the bottom or lower part. Unless otherwise specified, the directions used in the following explanation refer to the directions when each part of the busbar unit 1 is assembled to the electrical junction box 100.

[0013] As shown in Figure 1, the busbar unit 1 comprises a plurality of busbars 10 and a cover 20.

[0014] [Bus bar] The bus bar 10 is a connection member that electrically connects electronic components housed inside the housing 110 of the electrical connection box 100. The bus bar 10 is formed of a metallic material having conductivity. For example, by forming a single sheet metal into a shape corresponding to each part through various processes such as punching and pressing, each part is integrally formed three-dimensionally.

[0015] As shown in FIG. 1 and the like, the bus bar 10 is formed in a flat plate shape. Therefore, the bus bar 10 of the present embodiment has a first surface 11 extending in a direction intersecting the height direction Z, and a second surface 12 extending in a direction intersecting the height direction Z and located on the opposite side of the first surface 11 in the height direction Z (see FIGS. 4 and 8). The bus bar 10 is assembled to the electrical connection box 100 such that the first surface 11 is located on the upper side in the height direction Z and the second surface 12 is located on the lower side in the height direction Z.

[0016] Also, as shown in FIG. 1, two bus bars 10 are provided. Each bus bar 10 extends along a direction intersecting each other and is arranged overlapping along the height direction Z which is the plate thickness direction of the bus bar 10. In the following description, when distinguishing between two bus bars 10 arranged overlapping along the height direction Z, the bus bar 10 arranged on the lower side in the height direction Z is referred to as the "first bus bar 10a", and the bus bar 10 arranged on the upper side in the height direction Z is referred to as the "second bus bar 10b". When there is no particular need to distinguish between the two bus bars 10, they are simply referred to as "bus bar 10".

[0017] Further, as shown in FIG. 1, the bus bar 10 includes a main body portion 13 and an electrical connection portion 14. The bus bar 10 is formed integrally with the main body portion 13 and the electrical connection portion 14 along the extending direction of the bus bar 10. The electrical connection portion 14 referred to here is provided in a pair at both ends in the extending direction of the bus bar 10, and each is a portion electrically connected to a connection object. The main body portion 13 is a portion connecting the electrical connection portions 14 to each other. As shown in FIG. 1, the electrical connection portion 14 of the present embodiment is provided with a through hole 14h as an example. The bus bar 10 formed in this way is, for example, in a state where a fastening member such as a bolt is inserted into the through hole 14h of the electrical connection portion 14 and the through hole of the electrical connection portion in the connection object, and the bus bar 10 and the connection object are electrically connected by tightening a fastening member such as a nut. The configuration of the electrical connection portion 14 is not particularly limited, and the connection form with the connection object is not particularly limited.

[0018] In the present embodiment, the main body portion 13 of the first bus bar 10a extends linearly along the second width direction Y of the electrical connection box 100 in a state of being assembled to the electrical connection box 100 (see FIGS. 1 and 4). The electrical connection portions 14 of the first bus bar 10a are provided one by one at one end and the other end in the second width direction Y of the main body portion 13. The electrical connection portion 14 provided at one end in the second width direction Y of the main body portion 13 and the electrical connection portion 14 provided at the other end in the second width direction Y of the main body portion 13 are configured to project to the opposite side with respect to the first width direction X. Therefore, as shown in FIGS. 1 and 4, the first bus bar 10a of the present embodiment is formed in a Z shape as a whole.

[0019] Furthermore, in this embodiment, the main body portion 13 of the second busbar 10b extends linearly along the first width direction X of the electrical junction box 100 when assembled to the electrical junction box 100 (see Figures 1 and 8). In addition, one electrical connection portion 14 of the second busbar 10b is provided at one end and one at the other end of the main body portion 13 in the first width direction X. Moreover, the electrical connection portion 14 provided at one end of the main body portion 13 in the first width direction X and the electrical connection portion 14 provided at the other end of the main body portion 13 in the first width direction X extend linearly along the first width direction X, similar to the main body portion 13. Therefore, as shown in Figures 1 and 8, the second busbar 10b in this embodiment is formed linearly as a whole.

[0020] Furthermore, the first busbar 10a and the second busbar 10b configured as described above are arranged such that the main body 13 of the second busbar 10b, which extends linearly along the first width direction X, overlaps the main body 13 of the first busbar 10a, which extends linearly along the second width direction Y (see Figure 1). Therefore, in this embodiment, the busbar unit 1 is arranged such that the second busbar 10b intersects with the first busbar 10a.

[0021] Furthermore, as shown in Figure 1, the busbar 10 is configured to include a projection 15. The projection 15 is provided on the main body 13.

[0022] In this embodiment, the projections 15 of the first busbar 10a are provided at the end in the first width direction X, which is the width direction of the main body portion 13 of the first busbar 10a. Furthermore, the projections 15 are provided in pairs at intervals along the second width direction Y, which is the extending direction of the main body portion 13 of the first busbar 10a. More specifically, one projection 15 is provided at each end of the main body portion 13 in the first width direction X.

[0023] Furthermore, in this embodiment, the projections 15 of the second busbar 10b are provided at the end in the second width direction Y, which is the width direction of the main body portion 13 of the second busbar 10b. In addition, the projections 15 are provided in pairs at intervals along the first width direction X, which is the extending direction of the main body portion 13 of the second busbar 10b. More specifically, one projection 15 is provided at each end of the main body portion 13 in the second width direction Y.

[0024] Furthermore, as shown in Figures 4 and 8, the projection 15 has a contact surface 15a, a top surface 15b, and an inclined surface 15c, and the contact surface 15a, top surface 15b, and inclined surface 15c are formed in a continuous manner, so that the shape viewed from the height direction Z is approximately triangular. The contact surface 15a is the surface that is positioned opposite to the end surface of the cover 20 (notch 25, which will be described later) of the cover 20 when the cover 20 is attached to the bus bar 10, and is a surface that extends parallel to the width direction of the main body 13. The top surface 15b is the surface that connects the contact surface 15a and the inclined surface 15c, and is formed in a rounded shape. The inclined surface 15c is a surface that is inclined with respect to the extending direction of the main body 13. In this embodiment, as shown in Figures 4 and 8, the bus bar 10 is configured so that the contact surfaces 15a provided on each of the pair of projections 15 are positioned opposite each other. Furthermore, the inclined surfaces 15c provided on each of the pair of protrusions 15 are configured to be inclined from the top surface 15b toward the end of the main body 13 in the extending direction.

[0025] [cover] The cover 20 is attached to one of two busbars 10 that are arranged to overlap along the height direction Z, thereby interposing and insulating the busbars 10 that are arranged adjacent to each other in the height direction Z. The cover 20 is formed three-dimensionally as a single unit from an insulating resin material or the like.

[0026] Furthermore, the cover 20 is attached to the main body 13 of the busbar 10 and is attached to one of two busbars 10 that are arranged adjacent to each other in the height direction Z, on the side facing the other busbar 10 in the height direction Z, thereby preventing one busbar 10 from overlapping and coming into contact with the other busbar 10. In the following description, the side facing the other busbar 10 in the height direction Z of one of two busbars 10 that are arranged adjacent to each other in the height direction Z, in this embodiment, the first surface 11 side of the first busbar 10a and the second surface 12 side of the second busbar 10b may be referred to as the regular mounting side A. Furthermore, with respect to one of the busbars 10 that are arranged adjacent to each other in the height direction Z, the side that does not face the other busbar 10 in the height direction Z and is exposed to the outside, in this embodiment, the second surface 12 side of the first busbar 10a and the first surface 11 side of the second busbar 10b, may be referred to as the non-standard mounting side B. Also, in the following description, the cover 20 will be described as being attached to the main body 13 of the first busbar 10a which is located on the lower side in the height direction Z, and the various components of the cover 20 will be described with reference to Figures 1 to 6.

[0027] As shown in Figures 2 and 3, the cover 20 is composed of a base wall portion 21 and a pair of side wall portions 22, and the pair of side wall portions 22 are formed integrally, so that the cross-sectional shape along the height direction Z is U-shaped.

[0028] The base wall portion 21 is a wall portion that extends along the first width direction X and the second width direction Y, with the height direction Z being the plate thickness direction. Furthermore, the base wall portion 21 is positioned between the first bus bar 10a and the second bus bar 10b, which are adjacent to each other in the height direction Z, by covering the first surface 11 of the first bus bar 10a when the cover 20 is attached to the first bus bar 10a. As shown in Figures 2 and 3, the base wall portion 21 is formed in a flat plate shape and extends linearly along the first width direction X when viewed from the second width direction Y. Furthermore, the base wall portion 21 is located between a pair of side wall portions 22 with respect to the first width direction X, and both ends are connected to each of the side wall portions 22. Furthermore, the base wall portion 21 has one side wall portion 22 erected along the height direction Z from one end in the first width direction X, and the other side wall portion 22 erected along the height direction Z from the other end in the first width direction X, so that the pair of side wall portions 22 are erected in the same direction to each other.

[0029] The pair of side wall portions 22 extend along the second width direction Y and the height direction Z, and the first width direction X is the thickness direction. As shown in Figures 2 and 3, the pair of side wall portions 22 are formed in a flat plate shape and extend linearly along the height direction Z when viewed from the second width direction Y. The pair of side wall portions 22 are positioned opposite each other with a gap in between along the first width direction X, and are formed to protrude from both ends of the first width direction X, which is the width direction of the base wall portion 21, to one side in the height direction Z.

[0030] Furthermore, the cover 20 has a locking mechanism 23, as shown in Figures 2 to 5.

[0031] The locking portion 23 is a member that locks the busbar 10, in this case the first busbar 10a, which is housed in a housing space 20S formed by being surrounded by the base wall portion 21 and a pair of side wall portions 22. As shown in Figure 3, the locking portion 23 is composed of an arm portion 231 formed to protrude from both ends of the base wall portion 21 in the first width direction X, along the height direction Z, in the same direction as the side wall portion 22, and a locking projection 232 formed at the tip of the arm portion 231 and protruding toward the housing space 20S.

[0032] Furthermore, as shown in Figure 3, the locking parts 23 are provided in pairs at intervals along the first width direction X, which is the width direction of the base wall 21, and two sets of the pair of locking parts 23 are provided along the second width direction Y, which is the extending direction of the base wall 21. Therefore, the cover 20 of this embodiment is attached to the regular mounting side A of the first bus bar 10a by the multiple locking projections 232 each catching on the non-regular mounting side B of the first bus bar 10a housed in the housing space 20S (see Figure 5).

[0033] Furthermore, as shown in Figures 2 to 4 and Figure 6, the cover 20 has an interference portion 24 and a notch portion 25.

[0034] As shown in Figures 2 and 3, the interference portion 24 is a wall portion that extends along the second width direction Y and the height direction Z, with the first width direction X being the plate thickness direction. Similar to the side wall portion 22, the interference portion 24 is formed projecting from the end of the base wall portion 21 in the first width direction X along the height direction Z in the same direction as the side wall portion 22, and is formed integrally with the side wall portion 22.

[0035] Furthermore, as shown in Figure 3, the interference portion 24 is provided at the end of the base wall portion 21 in the first width direction X. The interference portion 24 is provided in pairs, spaced apart along the second width direction Y of the base wall portion 21, with one provided at each end of the base wall portion 21 in the first width direction X. When the cover 20 is attached to the regular mounting side A of the first bus bar 10a, the interference portion 24 is located in the same position as the projection 15 in the second width direction Y, and is located opposite the projection 15 in the first width direction X. Therefore, when the cover 20 is attached from the regular mounting side A of the first bus bar 10a, the interference portion 24 is positioned so as not to overlap with the projection 15 in the height direction Z. Therefore, the interfering portion 24 avoids interference with the projection 15 provided on the first bus bar 10a when the cover 20 is positioned on the normal mounting side A of the first bus bar 10a, thereby enabling the cover 20 to be attached to the first bus bar 10a (see Figure 4).

[0036] Furthermore, as shown in Figure 6, when the cover 20 is attached to the first bus bar 10a from the non-standard mounting side B, the interfering portion 24 is positioned on the same side as the projection 15 in the second width direction Y and the first width direction X, and is positioned to overlap with the projection 15 in the height direction Z. When the cover 20 is brought close to the first bus bar 10a, the tip of the wall portion constituting the interfering portion 24 comes into contact with the projection 15, causing interference with the projection 15. Therefore, when the cover 20 is positioned on the non-standard mounting side B of the first bus bar 10a, the interfering portion 24 interferes with the projection 15 provided on the first bus bar 10a, making it impossible to attach the cover 20 to the first bus bar 10a. Therefore, in this embodiment, when the cover 20 is attached to the first bus bar 10a, it is possible to determine whether the cover 20 is attached to the first bus bar 10a in the appropriate position by checking whether the interference portion 24 of the cover 20 comes into contact with the projection 15 of the first bus bar 10a.

[0037] As shown in Figures 2 and 3, the notch 25 is a portion of the end of the cover 20 in the second width direction Y that is cut out from the opposite side of the interference portion 24 in the first width direction X, where the cover 20 is formed by integrally forming the base wall portion 21 and a pair of side wall portions 22. As shown in Figures 2 and 3, a pair of notches 25 are provided at both ends of the cover 20 in the second width direction Y. Furthermore, the notches 25 are located in the same position as the interference portion 24 in the second width direction Y, and are located opposite the interference portion 24 in the first width direction X. More specifically, when the cover 20 is attached to the normal mounting side A of the first bus bar 10a, the notches 25 are located on the same side as the projection 15 in the second width direction Y and the first width direction X, and are positioned to overlap with the projection 15 in the height direction Z. When the cover 20 is brought close to the first bus bar 10a, the projection 15 is inserted into the notch 25, so that the notch 25 is positioned opposite the contact surface 15a of the projection 15 (see Figure 4). Therefore, in this embodiment, when the cover 20 is attached to the first bus bar 10a, the notch 25 avoids the projection 15 provided on the first bus bar 10a, making it possible to attach the cover 20 to the first bus bar 10a.

[0038] Furthermore, as shown in Figure 4, the cover 20 configured as described above is positioned between the pair of protrusions 15 in the second width direction Y when attached to the regular mounting side A of the first bus bar 10a, and is positioned in the second width direction Y by the protrusions 15. Moreover, the cover 20 can be prevented from shifting position by the end face of the notch 25 contacting each of the pair of protrusions 15. Therefore, the cover 20 of this embodiment can be attached to the first bus bar 10a in an appropriate position.

[0039] Furthermore, as shown in Figure 2, the cover 20 is formed with 180-degree rotational symmetry around a reference axis L3 that passes through the intersection O of the center line L1 in the second width direction Y, which is the extending direction of the cover 20, and the center line L2 in the first width direction X, which is the width direction of the cover 20, and extends in the height direction Z. Therefore, when the cover 20 is rotated 180 degrees around the reference axis L3, the shape before rotation and the shape after rotation are the same. Consequently, the cover 20 of this embodiment does not require any specification of orientation relative to the first bus bar 10a.

[0040] Although the cover 20 has been described as being attached to the main body 13 of the first busbar 10a, it may also be attached to the main body 13 of the second busbar 10b (see Figure 7).

[0041] In this case, as shown in Figures 6 and 8, the projections 15 described above are configured such that, on each bus bar 10 which are arranged to overlap along the height direction Z, the distances K1 and K2 between the projections 15 in the extending direction are equal when viewed from the regular mounting side A, and the projection direction of the projections 15 in the width direction is equal. Therefore, the cover 20 of this embodiment can be attached to either the regular mounting side A of the first bus bar 10a or the regular mounting side A of the second bus bar 10b.

[0042] Furthermore, the cover 20 is assembled to the regular mounting side A of the second bus bar 10b by having multiple locking protrusions 232 each catch on the non-regular mounting side B of the second bus bar 10b housed in the housing space 20S (see Figure 9).

[0043] Furthermore, as shown in Figure 8, when the cover 20 is attached to the regular mounting side A of the second bus bar 10b, the interfering portion 24 is located in the same position as the projection 15 in the first width direction X, and is located opposite the projection 15 in the second width direction Y. Therefore, when the cover 20 is attached to the regular mounting side A of the second bus bar 10b, the interfering portion 24 is positioned so as not to overlap with the projection 15 in the height direction Z. Thus, the interfering portion 24 avoids interference with the projection 15 provided on the second bus bar 10b when the cover 20 is positioned on the regular mounting side A of the second bus bar 10b, thereby enabling the cover 20 to be attached to the second bus bar 10b.

[0044] Furthermore, as shown in Figure 10, when the cover 20 is attached to the second bus bar 10b from the non-standard mounting side B, the interfering portion 24 is positioned on the same side as the projection 15 in the first width direction X and the second width direction Y, and is positioned to overlap with the projection 15 in the height direction Z. When the cover 20 is brought close to the second bus bar 10b, the tip of the wall portion constituting the interfering portion 24 comes into contact with the projection 15, causing interference with the projection 15. Therefore, when the cover 20 is positioned on the non-standard mounting side B of the second bus bar 10b, the interfering portion 24 interferes with the projection 15 provided on the second bus bar 10b, making it impossible to attach the cover 20 to the second bus bar 10b. Therefore, in this embodiment, when the cover 20 is attached to the second bus bar 10b, it is possible to determine whether the cover 20 is attached to the second bus bar 10b in the appropriate position by checking whether the interference portion 24 of the cover 20 comes into contact with the projection 15 of the second bus bar 10b.

[0045] Furthermore, as shown in Figure 8, when the cover 20 is attached to the regular mounting side A of the second busbar 10b, it is positioned between the pair of protrusions 15 with respect to the first width direction X, and is positioned with respect to the first width direction X by the protrusions 15. Moreover, the cover 20 can be prevented from shifting position by the end face of the notch 25 contacting each of the pair of protrusions 15. Therefore, the cover 20 of this embodiment can be attached to the second busbar 10b in an appropriate position.

[0046] Furthermore, as explained above, since the cover 20 is formed with 180-degree rotational symmetry around the reference axis L3 extending in the height direction Z, it is possible to eliminate the need to specify the orientation relative to the second bus bar 10b.

[0047] The busbar unit 1 described above comprises a plurality of busbars 10 formed in a flat plate shape, extending along directions that intersect each other, and arranged overlapping along the height direction Z, and a cover 20 that is insulating, interposed between adjacent busbars 10 arranged in the height direction Z, and attached to one of the busbars 10. The busbars 10 also have projections 15 provided at the ends in the width direction that intersects the extending direction and the plate thickness direction of the busbars 10, and the cover 20 has an interference portion 24 that, when positioned on the regular mounting side A, which is the side facing the other busbar 10 in the height direction Z, can be attached to one of the adjacent busbars 10 by avoiding interference with the projections 15, and when positioned on the non-regular mounting side B, which is located on the opposite side of the regular mounting side A in the height direction Z, it interferes with the projections 15 and cannot be attached to one of the busbars 10.

[0048] With this configuration, the busbar unit 1 can prevent the cover 20 from being attached to the busbar 10 in the wrong orientation by checking whether the interference portion 24 of the cover 20 interferes with the projection 15 of the busbar 10 when the cover 20 is attached to the busbar 10. Therefore, the busbar unit 1 can easily assemble the cover 20 to the busbar 10.

[0049] Furthermore, the busbar unit 1 can be properly attached to the standard mounting side A of any of the multiple busbars 10 that are arranged to overlap along the height direction Z. Therefore, the busbar unit 1 can properly insulate the busbars 10 that are arranged to overlap along the height direction Z with the cover 20. The busbar unit 1 can improve layout feasibility by configuring the cover 20 to be shaped so that it can be properly assembled to any of the busbars 10. Thus, the busbar unit 1 of this embodiment can be configured such that the cover 20 is shaped to properly insulate the intersecting busbars 10 from each other, and the ease of assembly of the cover 20 to the busbars 10, as well as the manufacturing efficiency and versatility of each component constituting the busbar unit 1 can be improved, thereby improving production efficiency.

[0050] Furthermore, the projections 15 described above are provided in pairs at intervals along the extending direction of the busbar 10, and the cover 20, when attached to the regular mounting side A of the busbar 10, is positioned between the pair of projections 15 in the extending direction and is positioned with respect to the second width direction Y by the projections 15. With this configuration, the busbar unit 1 can attach the cover 20 to the busbar 10 in an appropriate position. Therefore, the busbar unit 1 can more reliably insulate the intersecting busbars 10 from each other by the cover 20 attached to the busbar 10. Accordingly, the busbar unit 1 of this embodiment can improve production efficiency.

[0051] Furthermore, the projections 15 described above are provided in pairs, one at each end in the width direction of the busbar 10. The pair of projections 15 are configured such that, for each busbar 10 arranged adjacent to each other in the height direction Z, the distances K1 and K2 between the projections 15 relative to the extending direction of the busbar 10 are equal when viewed from the normal mounting side A, and the projection directions of each projection 15 relative to the width direction of the busbar 10 are equal. The cover 20 is also formed with 180-degree rotational symmetry around a reference axis L3 that passes through the intersection point O of the center line L1 in the extending direction of the cover 20 and the center line L2 in the width direction of the cover 20, and extends in the height direction Z. With this configuration, the busbar unit 1 can properly attach the cover 20 to any of the multiple busbars 10 that are arranged overlapping along the height direction Z. Furthermore, by giving the cover 20 of the busbar unit 1 rotational symmetry, it is possible to eliminate the need to specify the orientation in which the cover 20 is attached to each busbar 10. Therefore, the busbar unit 1 of this embodiment can be configured to further improve the ease of assembly of the cover 20 to the busbars 10, as well as the manufacturing efficiency and versatility of each component constituting the busbar unit 1, thereby further improving production efficiency.

[0052] Furthermore, the busbar unit 1 is not limited to the embodiments described above, and various modifications are possible within the scope of the claims.

[0053] For example, the number of busbars 10 is not particularly limited.

[0054] Furthermore, the number of protrusions 15 is not particularly limited, and the position and protruding direction of each protrusion 15 are not particularly limited to the form shown in Figure 1, etc.

[0055] Furthermore, the cover 20 is not particularly limited to the form shown in Figures 2 and 3, and its cross-sectional shape along the height direction Z does not have to be U-shaped. Also, the cover 20 does not have to have a notch 25.

[0056] Furthermore, as shown in Figure 2, the cover 20 does not necessarily have to be formed such that the shape before rotation and the shape after rotation match when rotated 180 degrees around the reference axis L3.

[0057] Furthermore, the busbar unit 1 according to this embodiment may be constructed by appropriately combining the components of the embodiments described above. [Explanation of Symbols]

[0058] 1 Busbar Unit 10 Bus Bar 11 Page 1 12 Side 2 13 Main body 14. Electrical connection 15 Protrusion 20 Covers 21 Base wall section 22 Side wall section 23. Rock section 24 Interference section 25 Notch A Busbar Standard mounting side B Busbar Non-standard mounting side Distance between protrusions K1 and K2 L1 Centerline in the extension direction of the cover L2 Centerline in the width direction of the cover Reference axis extending in the thickness direction of the L3 cover O Intersection of the center line in the extension direction of the cover and the center line in the width direction X 1st width direction Y Second width direction Z (height direction)

Claims

1. Multiple busbars, formed into a flat plate shape, extending along directions that intersect each other and arranged to overlap along the thickness direction, The device comprises an insulating cover which is interposed between adjacent busbars arranged in the thickness direction and which is attached to one of the busbars, The busbar has projections provided at its ends in the width direction intersecting the extending direction and the plate thickness direction, The cover is characterized in that, when positioned on the regular mounting side of one of the adjacent busbars, which is the side facing the other busbar in the thickness direction, it can be attached to that busbar by avoiding interference with the projection, and when positioned on the non-regular mounting side, which is located on the opposite side of the regular mounting side in the thickness direction, it interferes with the projection and cannot be attached to that busbar. Busbar unit.

2. The aforementioned protrusions are provided in pairs at intervals along the extending direction, The cover, when attached to the regular mounting side of the busbar, is positioned between the pair of projections in the extending direction and is positioned in the extending direction by the projections. The busbar unit according to claim 1.

3. The aforementioned projections are provided in pairs, one at each end in the width direction. The pair of projections are configured such that, on each busbar, when viewed from the regular mounting side, the distance between the projections in the extending direction is equal, and the protruding direction of each projection in the width direction is equal. The cover is formed with 180-degree rotational symmetry about a reference axis that passes through the intersection of the center line in the extending direction and the center line in the width direction, and extends in the thickness direction. The busbar unit according to claim 1 or 2.

Images