JP6861545B2 - Branch structure and branch box - Google Patents

Description

The present invention relates to a branch structure and a branch box.

For example, an electric wire that sends power from an in-vehicle battery to various parts of a vehicle body is often passed through a junction box (J / B) once and then taken (branched) from the junction box to various parts of the vehicle body.

For example, there is a flat cable branching structure of Patent Document 1 that easily branches such an electric wire. The branch structure of this flat cable connects a flat cable main body having a plurality of first conductors arranged in a stripe shape and a flat cable branch body having one or a plurality of second conductors arranged in a stripe shape. Then, the plurality of first conductors and the above one or a plurality of second conductors are made conductive in any combination. In the branch structure of this flat cable, the first conductor and the second conductor are arranged in a directly superposed state or in a superposed state with a third conductor bridged between the first conductor and the second conductor. , One of the pair of conductors to be superposed has a convex portion protruding in the opposite direction, and solder is filled between the convex portion of the one conductor and the other conductor.

JP-A-2015-149204

By the way, when power is sent to various places through the J / B once from the in-vehicle battery, there is a problem that the wire length becomes long. In addition, since the number of extra electric wires increases, there is a problem that the weight increases and the cost increases.
In the branch structure of the flat cable of Patent Document 1, in the connection between the flat cable branch and the flat cable branch, the first conductor and the second conductor are arranged in a superposed state, and one of the pair of superposed conductors is arranged. Since it has a convex portion that protrudes in the opposite direction and the solder is filled between the convex portion and the other conductor, it is necessary to secure a space for arranging the convex portion and the solder in the opposite direction, which saves space. Is at a disadvantage.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a branching structure and a branching box capable of branching a wiring material composed of a plurality of conductors in a desired direction in a space-saving manner.

The above object according to the present invention is achieved by the following configuration.
(1) a branched structure for connecting a plurality of distribution cord material comprising a plurality of conductors, and a plurality of flat portions that will be laminated made of a flat electrically conductive material, stacked outside the respective flat portions A plurality of groups of connecting portions composed of a plurality of connecting pieces protruding vertically and horizontally and vertically and horizontally so as to have a predetermined interval from the peripheral edge and connected corresponding to the plurality of conductors, and the plurality of flat plates. A branch structure comprising an insulating layer provided between the portions and electrically insulating between the flat plates, wherein the plurality of flat plates are laminated via the insulating layer.

According to the branching structure having the configuration of (1) above, a wiring material composed of a plurality of conductors can be branched in a desired direction by connecting the conductors. In the branched structure of this configuration, the flat plate portions made of the flat plate-shaped conductive material are laminated as many as the number of the plurality of conductors in the wiring material. On the outer peripheral edge of the plurality of flat plates in which each flat plate is electrically insulated by an insulating layer, a plurality of groups of connecting portions composed of the same number of connecting pieces as the conductors of the wiring material are directed in a desired branching direction. Is thrust. When looking at one of the plurality of conductors provided in the wiring material, at least three connecting pieces are provided on the outer peripheral edge of one flat plate portion in order to branch the conductor. As described above, in the branched structure of the present configuration, the plurality of flat plate portions having the connecting pieces protruding from the outer peripheral edge in the desired connection direction are laminated via the insulating layer to form the laminated conductive member. In this laminated conductive member, the connecting pieces of the laminated flat plate portions are arranged vertically and horizontally so as to have a predetermined interval in the stacking direction. Therefore, in the laminated conductive member, the dimensions in the horizontal arrangement direction can be reduced by the amount that the connection pieces can be arranged vertically as compared with the case where the connection pieces are arranged only side by side. That is, it is possible to obtain a compact branch structure in which the size of the wiring surface parallel to the flat plate portion is reduced.

(2) A branched structure for connecting a plurality of wiring materials composed of a plurality of conductors, the plurality of laminated flat plate portions made of a flat plate-shaped conductive material, and the outside of the laminated flat plate portions. A plurality of groups of connecting portions composed of a plurality of connecting pieces protruding vertically and horizontally and vertically and horizontally so as to have a predetermined interval from the peripheral edge and connected corresponding to the plurality of conductors, and the plurality of flat plates. A plurality of vertically and projecting connecting pieces are bent with respect to the outer peripheral edge of the flat plate portion in a direction in which the plurality of vertically and projecting connecting pieces are provided with an insulating layer provided between the portions to electrically insulate between the flat plate portions. branch structure you characterized in that it is formed.

According to the branch structure having the configuration of (2) above, the upper and lower connecting pieces protruding vertically in the stacking direction are bent and formed in the direction in which they are separated from each other, so that a predetermined space is provided between the upper and lower connecting pieces. Is secured. This space can be used as an arrangement space for connecting tools (bolts, connectors, etc.) for electrically connecting the connecting piece and the wiring material. Further, by bending the upper and lower connecting pieces apart from each other, the size of the laminated conductive member can be made compact while ensuring a large insulation distance. Further, by bending the connecting piece, it is possible to release the stress from the linear direction in which the connected wiring material extends, and it is possible to suppress an excessive stress from being applied to the connecting piece. In addition, by bending the connection piece according to the vehicle mounting requirements, it is possible to easily design the size of the branch box according to the requirements.

(3) The branched structure according to (1) or (2) above, wherein the insulating layer is formed by powder coating on at least one of the front surface and the back surface of the flat plate portion.

According to the branched structure having the configuration of (3) above, the insulating layer by powder coating is formed in advance on at least one of the front surface and the back surface of the flat plate portion, so that the insulating layer is formed thinly and laminated. The interval between them can be reduced, and the assembly work when laminating a plurality of flat plate portions can be facilitated.

(4) A branch box characterized in that the laminated conductive member having the branch structure according to any one of (1) to (3) above is housed in an insulating storage case.

According to the branch box having the configuration of (4) above, the laminated conductive member is housed in a storage case having insulating properties such as electrical insulation and thermal insulation, so that the wiring material (electric wire) of a vehicle or the like is used. The handleability when attaching to the branching part is improved.

(5) A plurality of divided storage cases accommodating a plurality of the flat plate portions stacked so that the plurality of the connection pieces project horizontally are integrated so that the plurality of the connection pieces project vertically. The branch box according to (4) above, which is characterized in that it is configured in.

According to the branch box having the configuration of (5) above, among the plurality of laminated flat plate portions constituting the laminated conductive member, the upper flat plate portion having the upper connecting pieces separated vertically and the lower connecting piece are separated. The lower flat plate portion to be held is separately housed in an upper split housing case and a lower split housing case, respectively. As a result, the assemblability and handleability of the laminated conductive members, in which the plurality of connecting pieces project vertically and horizontally so as to have a predetermined interval in the stacking direction, are improved.

According to the branch structure and the branch box according to the present invention, a wiring material composed of a plurality of conductors can be branched in a desired direction in a space-saving manner.

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments described below (hereinafter referred to as "embodiments") with reference to the accompanying drawings. ..

FIG. 5 is an external perspective view of a branch box in which a laminated conductive member having a branch structure according to an embodiment of the present invention is housed. It is an external perspective view of the branch box shown in FIG. 1 with the upper lid case removed. It is a plan view of FIG. It is a perspective view of the laminated conductive member housed in the branch box of FIG. It is an enlarged view of the main part of the connection piece which concerns on a modification. It is an exploded perspective view in the upper split accommodation case. It is an exploded perspective view in the lower split accommodation case. It is a top view of the upper split accommodation case. It is a vertical cross-sectional perspective view of the upper split storage case and the lower split storage case stacked back to back. It is a partial perspective view of the wiring material connected to the laminated conductive member shown in FIG. It is a front view of the left end part in the wiring material shown in FIG. It is a schematic diagram which shows the wiring example of the electric wire in the vehicle using the junction box. It is a schematic diagram which shows the wiring example in the vehicle using the branch box shown in FIG. 1 and a plurality of kinds of wiring materials. It is explanatory drawing which shows another example of a power distribution direction. It is the main part perspective view of the wiring material using the round conductor which can be connected to the branch box shown in FIG. It is a side view which shows the connection example of a wiring material and a laminated conductive member.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view of a branch box 11 containing a laminated conductive member 13 having a branch structure according to an embodiment of the present invention, and FIG. 2 is a branch box shown in FIG. 1 with the upper lid case 25 removed. 11 is an external perspective view, and FIG. 3 is a plan view of FIG.
The branch structure according to the present embodiment is applied to the laminated conductive member 13 (see FIG. 4) housed in the branch box 11. The branch structure according to the present embodiment electrically connects a plurality of wiring members 15 (see FIG. 10), which will be described later, composed of a plurality of conductors. For example, in the branching structure of the present embodiment, the power supplied from the vehicle-mounted battery 17 (see FIG. 13) can be optimally branched to the devices 19 in various parts of the vehicle.

As shown in FIGS. 1 to 3, the branch box 11 is made of a synthetic resin having insulating properties such as electrical insulation and thermal insulation for accommodating the laminated conductive member 13 having the branch structure according to the present embodiment. It is a storage case. The branch box 11 is configured by vertically stacking the upper split storage case 21 and the lower split storage case 23. The upper split storage case 21 and the lower split storage case 23 have the same structure and are used back to back. The upper surface of the upper split storage case 21 and the lower surface of the lower split storage case 23 are closed by the lid case 25.

The branch box 11 formed by vertically stacking the upper split storage case 21 and the lower split storage case 23 back to back is a storage case and a lid case composed of the upper split storage case 21 and the lower split storage case 23. 25 covers the laminated conductive member 13. The branch box 11 is formed of a substantially hexahedron. A total of four connection openings 27 are formed on each side of the branch box 11 so as to project from each side. Each connection opening 27 has a plurality of (four in the illustrated example) connection ports 29. First connection pieces 47A to 47D, second connection pieces 49A to 49D, third connection pieces 51A to 51D, and fourth connection pieces 53A to 53D, which will be described later, are arranged in each connection port 29. The flat conductors 95, 97, 99, and 101 of the wiring material 15, which will be described later, are electrically connected to the respective connection pieces arranged at the respective connection ports 29.

The branch box 11 is provided with connection openings 27 on all sides. In each connection opening 27, a pair of connection ports 29 are arranged vertically along each side. Therefore, a total of four connection pieces are arranged in each connection opening 27. Therefore, the branch box 11 of the illustrated example includes a total of 16 connection pieces. Since the branching direction of these power supplies in the branching box 11 depends on the wiring direction of the wiring material 15, the branching direction can be freely changed by selecting and processing the optimum position, not limited to the shape shown in the illustrated example. Is something that can be done.

FIG. 4 is a perspective view of the laminated conductive member 13 housed in the branch box 11 of FIG.
The laminated conductive member 13 housed in the branch box 11 is formed by laminating a flat plate portion made of a plurality of flat plate-shaped conductive materials.

In the present embodiment, the flat plate portion includes an upper first flat plate portion 31, an upper second flat plate portion 33 (see FIG. 6), a lower first flat plate portion 35 (see FIG. 7), and a lower second flat plate portion 37 (see FIG. 7). 7). Hereinafter, these are also collectively referred to simply as "flat plate portion".

The number of these laminated flat plate portions 31, 33, 35, 37 is the number of the flat conductors 95, 97, 99, 101 of the connecting cord 15. In the present embodiment, since the number of flat conductors 95, 97, 99, 101 of the wiring material 15 described later is 4, the flat plate portion is the upper first flat plate portion 31, the upper second flat plate portion 33, and the lower side. There are four sheets, the first flat plate portion 35 and the lower second flat plate portion 37.

In the present embodiment, the upper first flat plate portion 31, the upper second flat plate portion 33, the lower first flat plate portion 35, and the lower second flat plate portion 37, which are rectangular flat plate portions in a plan view, are laminated flat plates. A plurality of first to fourth connecting pieces 47A to 47D, 49A to 49D, 51A to 51D protruding vertically and horizontally and horizontally so as to have a predetermined interval in the stacking direction from the outer peripheral edges of the portions 31, 33, 35, 37. , 53A-53D. More specifically, the first connecting pieces 47A to 47D in the upper first flat plate portion 31 and the second connecting pieces 49A to 49D in the upper second flat plate portion 33 project side by side so as not to overlap each other in the stacking direction. ing. Further, the third connection pieces 51A to 51D in the lower first flat plate portion 35 and the fourth connection pieces 53A to 53D in the lower second flat plate portion 37 project side by side so as not to overlap each other in the stacking direction. ing. The first connection pieces 47A to 47D and the second connection pieces 49A to 49D and the third connection pieces 51A to 51D and the fourth connection pieces 53A to 53D have a predetermined interval in the stacking direction from each other. It protrudes vertically and vertically.

The first to fourth connection pieces 47A to 47D, 49A to 49D, 51A to 51D, and 53A to 53D are electrically connected to the flat conductors 95, 97, 99, and 101 of the wiring material 15, respectively. Will be done. These first to fourth connection pieces 47A to 47D, 49A to 49D, 51A to 51D, and 53A to 53D form a plurality of groups of connection portions.

As shown in FIG. 4, the laminated conductive member 13 of the present embodiment has a connecting portion 39 of the first group, a connecting portion 41 of the second group, and a connecting portion 43 of the third group on each side side portion. , A connection portion 45 of the fourth group, and a total of four groups of connection portions are provided.
The first to fourth connection pieces 47A, 49A, 51A, 53A are arranged in the connection portion 39 of the first group, and the first to fourth connection pieces 47B, 49B are arranged in the connection portion 41 of the second group. , 51B, 53B are arranged, the first to fourth connection pieces 47C, 49C, 51C, 53C are arranged in the connection part 43 of the third group, and the first to fourth connection pieces 45 are arranged in the connection part 45 of the fourth group. The fourth connection pieces 47D, 49D, 51D, 53D are arranged. Each connection piece is provided with a bolt fixing hole 79 for electrically connecting the flat conductors 95, 97, 99, 101 of the wiring material 15 by bolting.

FIG. 5 is an enlarged view of a main part of the connection piece according to the modified example.
The bolt fixing holes 79 formed in the first to fourth connection pieces 47A to 47D, 49A to 49D, 51A to 51D, and 53A to 53D shown in FIG. 4 are like the connection pieces 71 and 73 shown in FIG. In addition, an elongated hole 81 long in the extending direction of the wiring material 15 can be formed. Since the wiring material 15 used in the branching structure of the present embodiment has a structure in which flat conductors 95, 97, 99, 101 made of a metal plate are laminated, it is manufactured in a shape suitable for the installation location. Therefore, it may be difficult to fasten the bolts due to the manufacturing tolerance of the mounted surface or the wiring material itself. Therefore, by making the bolt fixing holes of the connecting pieces 71 and 73 into elongated holes 81 along the extending direction of the wiring material 15, the workability of connecting the branch box 11 and the wiring material 15 can be improved. Further, by providing the elongated holes 81 in the connecting pieces 71 and 73, the manufacturing tolerance of the wiring material 15 can be relaxed, so that the manufacturing cost can be reduced.

FIG. 6 is an exploded perspective view inside the upper split accommodation case 21, and FIG. 7 is an exploded perspective view inside the lower split accommodation case 23.
The laminated conductive member 13 according to the present embodiment is divided into an upper split storage case 21 and a lower split storage case 23 that form a storage case for the branch box 11.
The upper first flat plate portion 31 and the upper second flat plate portion 33 shown in FIG. 6 are accommodated in the upper split accommodating case 21.
The upper first flat plate portion 31 has first connection pieces 47A to 47D, and the upper second flat plate portion 33 has second connection pieces 49A to 49D.

In the upper first flat plate portion 31, the corner portion sandwiched between the connecting portion 39 of the first group and the connecting portion 41 of the second group becomes an empty space 83, and when the flat plate portions are laminated, the second flat plate portion 33 of the upper second flat plate portion 33 is formed here. The second connection piece 49A and the second connection piece 49B are arranged.

The lower first flat plate portion 35 and the lower second flat plate portion 37 shown in FIG. 7 are accommodated in the lower split accommodating case 23.
The lower first flat plate portion 35 has the third connecting pieces 51A to 51D, and the lower second flat plate portion 37 has the fourth connecting pieces 53A to 53D.

In the lower first flat plate portion 35, the corner portion sandwiched between the connecting portion 39 of the first group and the connecting portion 41 of the second group becomes an empty space 83, and when the flat plate portions are laminated, the lower second flat plate portion 37 is here. The fourth connection piece 53A and the fourth connection piece 53B in the above are arranged.

In the branch box 11 of the present embodiment, a plurality of flat plate portions in which a plurality of connecting pieces are stacked so as to project side by side are separately housed in an upper split housing case 21 and a lower split housing case 23. The upper split storage case 21 and the lower split storage case 23 are integrally formed by stacking a plurality of connecting pieces in a plurality of housed flat plates so as to project vertically.

In the laminated conductive member 13 having the branched structure according to the present embodiment, the first connecting pieces 47A to 47D and the second connecting pieces 49A to 49D, and the third connecting pieces 51A to 51D and the third connecting pieces 51A to 51D are vertically and projecting. The connecting pieces 53A to 53D of No. 4 are formed by bending in a crank shape with respect to the outer peripheral edges of the flat plate portions 31, 33, 35, and 37 in the directions in which they are separated from each other. The bent portions of these connecting pieces are flat conductors of the wiring material 15 when the flat plates having the connecting pieces protruding side by side so as not to overlap in the stacking direction are laminated and the connecting pieces are arranged side by side. Each connecting piece can be bent in consideration of the plate thickness of the flat plate portion so that the heights of the tips of the connecting pieces to which the conductors are connected are the same. In the bent portion, for example, in the connecting portion 39 of the first group, the first connecting piece 47A and the third connecting piece 51A are overlapped so as to project vertically, and the second connecting piece 49A and the fourth connecting piece 49A are overlapped. The connecting pieces 53A are overlapped with each other so as to project vertically. The same applies to the connecting portions 41, 43, and 45 of the other second to fourth groups.

Here, in the above-mentioned laminated conductive member 13, the upper first flat plate portion 31 having the first connecting pieces 47A to 47D, the upper second flat plate portion 33 having the second connecting pieces 49A to 49D, and the third The lower first flat plate portion 35 having the connecting pieces 51A to 51D and the lower second flat plate portion 37 having the fourth connecting pieces 53A to 53D can use conductive members having the same shape. That is, the upper first flat plate portion 31 shown in FIG. 6 can be rotated 180 degrees to form the upper second flat plate portion 33, and the upper first flat plate portion 31 is turned over to form the lower first flat plate portion 35. The upper first flat plate portion 31 can be rotated 180 degrees and turned inside out to form the lower second flat plate portion 37.

The laminated conductive member 13 is formed between a plurality of flat plate portions (upper first flat plate portion 31, upper second flat plate portion 33, lower first flat plate portion 35, lower second flat plate portion 37). An insulating layer 85 that electrically insulates the portions is provided.
The insulating layer 85 can be formed, for example, by powder coating on at least one of the front surface and the back surface of each of the flat plate portions 31, 33, 35, 37. In the present embodiment, the insulating layer 85 by powder coating is formed on the front and back surfaces of the flat plate portions 31, 33, 35, 37. There are mainly two types of powder coating, an "electrostatic coating method (spray coating)" and a "fluid immersion method (immersion coating)".

The "electrostatic coating method" is a method in which a paint is charged with a spray gun and then applied to a grounded object by using static electricity. In the "electrostatic spray method", it becomes easy to control the coating film with a thin film of about 50 microns. The thermosetting paint used in the "electrostatic spray method" undergoes a chemical change (crosslinking) when heat is applied, and its properties change. Since various performances can be added by the cross-linking reaction, it is possible to select a paint according to the application. The base resin used is generally a polyester resin, an acrylic resin, an epoxy resin, a hybrid (epoxy / polyester) resin, or the like.

In the "fluid immersion method", the flat plate-shaped member is washed and preheated in a preheating furnace. Next, immersion is performed in a fluidized immersion tank. In the immersion, a perforated plate is placed at the bottom of the fluidized immersion tank, the paint is made to flow by sending compressed air from the perforated plate, and the preheated flat plate-shaped member is immersed in the flowing paint. The paint in the fluidized immersion tank is fused to the flat plate-shaped member by heat to form a thick coating film. As a result, a flat plate-shaped member on which the insulating layer 85 is formed is obtained. The flat plate-shaped member becomes a flat plate portion on which the insulating layer 85 is formed through post-treatment. In the "fluid dipping coating method", a film thickness of usually 200 to 500 microns can be applied.

In the production of the insulating layer 85 of the upper first flat plate portion 31, the upper second flat plate portion 33, the lower first flat plate portion 35, and the lower second flat plate portion 37, for example, the connecting pieces of the flat plate portions (first 1 to 1). The surface of the portion to be the fourth connection piece 47A to 47D, 49A to 49D, 51A to 51D, 53A to 53D) is masked by using masking tape or the like. The connection piece may be provided with a bolt fixing hole 79 or the like by drilling in advance. The insulating layer 85 is not formed on the connecting pieces of the masked flat plate portions 31, 33, 35, 37. Therefore, the connecting pieces (first to fourth connecting pieces 47A to 47D, 49A to 49D, 51A to 51D, 53A to 53D) that are exposed parts of the conductive material in the flat plate portions 31, 33, 35, 37 are It can be used as a connection terminal. Therefore, the first to fourth connection pieces 47A to 47D, 49A to 49D, 51A to 51D, and 53A to 53D are bolted by using the bolt fixing holes 79 described above to form the flat conductor 95 of the wiring material 15. Conductive connections can be made with the wiring material connecting portions 103, 105, 107, and 109 in 97, 99, and 101, respectively.

FIG. 8 is a plan view of the upper split housing case 21, and FIG. 9 is a vertical cross-sectional perspective view of the upper split housing case 21 and the lower split housing case 23 stacked back to back.
The upper split storage case 21 and the lower split storage case 23 can be shared. That is, two objects having the same shape can be used back to back. Therefore, the lid case 25 can also have the same shape.
The upper split housing case 21 and the lower split housing case 23 having the same shape have flat joint surfaces that are back-to-back. A flat plate portion accommodating recess 87 is formed on the surface opposite to the connecting surface. The two connection ports 29 described above are formed at positions higher than the flat plate portion accommodating recess 87 on each of the four sides surrounding the flat plate portion accommodating recess 87. Each connection port 29 is partitioned by a partition wall 89. At the bottom of each connection port 29, for example, a recess 91 for implanting a stud bolt 80 is formed. The stud bolt 80 may be insert-molded into the upper split housing case 21 and the lower split housing case 23 in advance. On the outside of each corner of the flat plate portion accommodating recess 87, a screw hole 93 for co-fastening and fixing the upper split accommodating case 21 and the lower split accommodating case 23 together with the lid case 25 with fixing bolts (not shown). Is formed.

10 is a partial perspective view of the wiring material 15 connected to the laminated conductive member 13 shown in FIG. 4, and FIG. 11 is a front view of the left end portion of the wiring material 15 shown in FIG.
The wiring material 15 is connected to the laminated conductive member 13 housed in the branch box 11. The wiring material 15 can support multiple circuits by laminating flat conductors 95, 97, 99, 101 coated on the insulating layer 85. FIG. 10 illustrates the case of the wiring material 15 composed of four layers of flat conductors 95, 97, 99, 101, but the number of layers (number of sheets) is not limited to this. The four-layer flat conductors 95, 97, 99, 101 are integrated by, for example, a plurality of clamp members arranged at predetermined intervals along the longitudinal direction.

The wiring material connecting portions 103, 105, 107, 109 of the wiring material 15 can be formed with a width substantially half of the total width of the flat conductors 95, 97, 99, 101. Therefore, as shown in FIG. 10, in the wiring material 15, the upper first wiring material connecting portion 103 is arranged in the right half in the width direction of the flat conductor 95 of the first layer from the top, and the second layer from the top. The upper second wiring material connecting portion 105 is arranged on the left half of the flat conductor 97 in the width direction. On the other hand, in the wiring material 15, the lower first wiring material connecting portion 107 is arranged in the right half in the width direction of the flat conductor 99 of the third layer from the top, and the flat conductor 101 of the fourth layer from the top. The lower second wiring material connecting portion 109 is arranged in the left half in the width direction. Hereinafter, these are also collectively referred to simply as "route material connection portion".

These wiring material connecting portions are formed by bending the flat conductors 95 and 99 in the direction in which the upper first wiring material connecting portion 103 and the lower first wiring material connecting portion 107 are separated from each other. The upper second wiring material connecting portion 105 and the lower second wiring material connecting portion 109 are bent and formed with respect to the flat conductors 97 and 101 in the direction in which they are separated from each other. Bolt fixing holes 111 for bolting to the connecting portions 39, 41, 43, 45 of the first group to the fourth group of the branch box 11 are bored in these wiring material connecting portions 103, 105, 107, 109. Will be done.

By the way, in the wiring material 15, for example, flat conductors 95, 97, 99, 101 may be laminated in the order of 48V minus, 48V plus, 12V plus, and 12V minus from the lower layer to form four circuits. it can. In this case, the adjacent layers are preferably the same poles. In the wiring material 15 of the illustrated example, "48V plus" and "12V plus" are adjacent to each other in the second layer and the third layer. In this way, the wiring material 15 in which multiple circuits are laminated can improve the noise resistance performance by arranging the same poles adjacent to each other.

Next, the operation of the above configuration will be described.
In the branching structure according to the present embodiment, the wiring member 15 composed of a plurality of flat conductors 95, 97, 99, 101 can be branched in a desired direction by connecting the conductors. In the branched structure of the present embodiment, the upper first flat plate portion 31 and the upper second flat plate portion 33 made of flat conductive materials as many as the number of the plurality of flat conductors 95, 97, 99, 101 in the wiring material 15. The lower first flat plate portion 35 and the lower second flat plate portion 37 are laminated. The outer peripheral edges of the plurality of flat plates 31, 33, 35, 37 in which each flat plate portion is electrically insulated by the insulating layer 85 have the same number as the flat conductors 95, 97, 99, 101 of the wiring material 15. The connecting portions 39, 41, 43, 45 of the first to fourth groups composed of the first to fourth connecting pieces 47A to 47D, 49A to 49D, 51A to 51D, and 53A to 53D are oriented in a desired branching direction. It is thrust toward. When looking at the flat conductor 95 of one of the plurality of conductors provided in the wiring material 15, in order to branch the flat conductor 95, at least 3 are formed on the outer peripheral edge of one upper first flat plate portion 31. One first connecting piece 47A is provided. In this embodiment, four first connection pieces 47A are provided.

As described above, in the branch structure of the present embodiment, a plurality of flat plates in which the first to fourth connecting pieces 47A to 47D, 49A to 49D, 51A to 51D, and 53A to 53D are projected from the outer peripheral edge in a desired connection direction. The portions 31, 33, 35, and 37 form the laminated conductive member 13 by being laminated via the insulating layer 85.
In the laminated conductive member 13, the first to fourth connection pieces 47A to 47D, 49A to 49D, 51A to 51D, and 53A to 53D of the laminated flat plate portions 31, 33, 35, and 37 are predetermined in the stacking direction. They are arranged vertically and horizontally so as to have an interval. Therefore, the laminated conductive member 13 can be reduced in size in the horizontal arrangement direction by the amount that the connection pieces can be arranged vertically as compared with the case where the connection pieces are arranged only side by side. That is, it is possible to obtain a compact branch structure having a reduced size on the wiring surface parallel to the flat plate portions 31, 33, 35, 37. As a result, in the branch structure of the power supplied from the vehicle-mounted battery 17, it is possible to suppress an increase in unnecessary electric wires, reduce the weight, and reduce the cost.

Further, in the branch structure according to the present embodiment, the upper and lower first connection pieces 47A to 47D and the second connection pieces 49A to 49D, and the third connection pieces 51A to 51D and the third connection pieces 51A to 51D, which protrude vertically in the stacking direction. The connection pieces 53A to 53D of No. 4 are bent in a direction in which they are separated from each other, and a predetermined connection space is secured between the connection pieces. In this connection space, the first to fourth connection pieces 47A to 47D, 49A to 49D, 51A to 51D, 53A to 53D and the flat conductors 95, 97, 99, 101 of the wiring material 15 are bolted together. It can be used as an arrangement space for planting a stud bolt 80, which is a connecting tool for connecting.

Further, as described above, by bending the upper and lower connecting pieces apart from each other, the size of the laminated conductive member 13 can be made compact while ensuring a large insulation distance. Further, by bending the first to fourth connecting pieces 47A to 47D, 49A to 49D, 51A to 51D, and 53A to 53D, the stress from the linear direction in which the connected wiring member 15 extends is released. It is possible to suppress damage to the first to fourth connection pieces 47A to 47D, 49A to 49D, 51A to 51D, and 53A to 53D. Further, by bending the first to fourth connection pieces 47A to 47D, 49A to 49D, 51A to 51D, and 53A to 53D according to the vehicle mounting requirements, it is possible to easily design the size of the branch box 11 according to the requirements. It becomes.

Further, in the branched structure according to the present embodiment, the insulating layer 85 by powder coating is applied to at least one of the front surface and the back surface of each of the flat plate portions 31, 33, 35, 37 (in this embodiment, both the front surface and the back surface). By forming the insulating layer 85 in advance, it is possible to reduce the interval between the flat plate portions to be laminated by forming the insulating layer 85 thinly, and it is easy to perform the assembly work when laminating the plurality of flat plate portions 31, 33, 35, 37. it can.

In the branch box 11 according to the present embodiment, the laminated conductive member 13 is housed in a storage case made of synthetic resin having insulating properties such as electrical insulation and thermal insulation of the branch box 11, so that the vehicle or the like is accommodated. The handleability when attaching the wiring material 15 (electric wire) to the branching portion is improved.

In the branch box 11 of the present embodiment, among the plurality of laminated flat plate portions 31, 33, 35, 37 constituting the laminated conductive member 13, the upper connecting pieces (first connecting pieces 47A to 47A to vertically separated) are separated. Upper flat plate portions (upper first flat plate portion 31 and upper second flat plate portion 33) having 47D and second connecting pieces 49A to 49D) and lower connecting pieces (third connecting pieces 51A to 51D and fourth connecting pieces 51A to 51D). The lower flat plate portion (lower first flat plate portion 35 and lower second flat plate portion 37) having the connecting pieces 53A to 53D) is divided into an upper split accommodating case 21 and a lower split accommodating case 23, respectively. Be housed. As a result, the plurality of connecting pieces (first to fourth connecting pieces 47A to 47D, 49A to 49D, 51A to 51D, 53A to 53D) are arranged vertically and horizontally so as to have a predetermined interval in the stacking direction. The assembleability and handleability of the protruding laminated conductive member 13 are improved.

As shown in FIG. 12, for example, in the case of a wiring example in a conventional vehicle in which a vehicle-mounted battery 17 is once passed through a junction box 113 and power is sent to devices 19 at various locations, there is a problem that the electric wire length becomes long. In addition, since the extra electric wire 115 is increased, there is a problem that the weight is increased and the cost is increased.
On the other hand, as shown in FIG. 13, in the wiring example in the vehicle according to the present embodiment using the branch box 11 and the wiring material 15, the branch box 11 is provided at a required position of the wiring material 15 from the in-vehicle battery 17. Since the power can be transmitted from each branch box 11 to the devices 19 in various places, the wire length can be shortened. Further, since the extra electric wire 115 does not increase, the weight and cost can be reduced.

FIG. 14 is an explanatory diagram showing another example in the power distribution direction.
Further, in the branched structure of the present invention, the protruding position of the connecting piece in each flat plate portion is not limited to the position of the above-described embodiment. For example, in the configuration example of the laminated conductive member 13A shown in FIG. 14, unlike the laminated conductive member 13 shown in FIG. 3, the upper first flat plate to which the wiring member 133 is connected at the connecting portion 41 of the second group. The first connecting piece 47A, which is electrically connected to the first connecting piece 47B of the portion 31, is arranged at the lower position in FIG. 14, and the fourth connecting piece 47D is located at the right position in FIG. It is arranged. Thereby, the wiring materials having different conductor arrangements can be connected to the connecting portion 39 of the first group and the connecting portion 45 of the fourth group, and the circuit after branching of the power supply or the like can be changed.

Further, the branch structure according to the present embodiment does not necessarily have to be connected to the wiring member 15 made of the flat conductors 95, 97, 99, 101. For example, as shown in FIG. 15, a plurality of insulatingly coated round conductors 117 can connect the wiring members 121 bundled by a clamp 119 or the like. In each round conductor 117, the end 123 formed in the shape of an LA terminal is connected to the first to fourth connection pieces 47A to 47D, 49A to 49D, 51A to 51D, and 53A to 53D of the branch box 11, respectively. To.

Further, as shown in FIG. 16, for example, a pair of LA terminals 120 connected to a wiring member 130 made of an electric wire to a first connection piece 47A and a third connection piece 51A in the connection portion 39 of the first group. Can also be tightened together and electrically connected. As described above, according to the branch box 11 having the branch structure according to the present embodiment, the wiring member 15 made of flat conductors 95, 97, 99, 101 and the wiring material 130 made of electric wires are branched and connected. You can also do it.

Therefore, according to the branching structure according to the present embodiment, the wiring members 15, 121, 130 composed of a plurality of conductors (flat conductor, round conductor, electric wire) can be branched in a desired direction in a space-saving manner.
According to the branch box 11 according to the present embodiment, by installing the branch box 11 on the trunk line allocated from the in-vehicle battery 17, it is possible to optimally (compactly and easily) distribute the power supply to each place where the power source is desired to be brought.

The present invention is not limited to the above-described embodiment, and can be modified or applied by those skilled in the art based on the combination of the configurations of the embodiments with each other, the description of the specification, and the well-known technique. The invention is planned and is included in the scope for which protection is sought.

For example, the branch box having the above configuration has been described by taking the case where the flat plate portion is a quadrangle as an example, but the shape of the flat plate portion is not limited to this, and the shape of the flat plate portion is not limited to this. It may be a polygon such as a quadrangle or an octagon. Further, in the above configuration, the case where the connecting piece of the flat plate portion and the conductor of the wiring material are connected by bolt fastening has been described, but the connecting piece and the conductor are welded by ultrasonic bonding, friction stir welding or the like. Alternatively, it may be directly connected by a fitting locking structure formed on both sides.
Further, the insulating layer provided between the plurality of flat plate portions and electrically insulating between the flat plate portions can also be formed by an insulating sheet. By interposing an insulating sheet having a predetermined shape between the flat plates, an insulating layer can be inexpensively formed between the flat plates to be laminated.

The laminated conductive member 13 according to the present embodiment includes an upper split housing case 21 and a lower split housing case 23 that form a storage case for the branch box 11, respectively, with an upper first flat plate portion 31 and an upper side. The second flat plate portion 33, the lower first flat plate portion 35, and the lower second flat plate portion 37 are housed separately. The branch structure of the present invention is not limited to this, and the laminated conductive member 13 may be housed in one storage case. That is, the plurality of laminated flat plate portions in the present invention are directly laminated with each other to form a laminated conductive member, or a laminated conductive member is formed via a housing case as in the above embodiment. It includes the case of such a thing.

Here, the features of the branch structure and the embodiment of the branch box according to the present invention described above are briefly summarized and listed below in [1] to [5], respectively.
[1] A branched structure for connecting a plurality of wiring materials (15) composed of a plurality of conductors (flat conductors 95, 97, 99, 101), which are laminated made of a flat conductive material. A plurality of flat plate portions (upper first flat plate portion 31, upper second flat plate portion 33, lower first flat plate portion 35, lower mold second flat plate portion 37) and the laminated direction from the outer peripheral edge of each of the laminated flat plate portions. A plurality of connection pieces (first connection pieces 47A to 47D, second connection pieces 49A to 49D, which project vertically and horizontally so as to have a predetermined interval and are connected to the plurality of conductors. Multiple groups of connecting parts (first group connecting part 39, second group connecting part 41, third group connecting part) composed of third connecting pieces 51A to 51D, fourth connecting pieces 53A to 53D). 43, a branch structure characterized by comprising a connection portion 45) of the fourth group and an insulating layer (85) provided between the plurality of flat plate portions to electrically insulate between the flat plate portions.
[2] A plurality of vertically and projecting connection pieces (first connection pieces 47A to 47D, second connection pieces 49A to 49D, third connection pieces 51A to 51D, fourth connection pieces 53A to 53D) , The flat plate portion (upper first flat plate portion 31, upper second flat plate portion 33, lower first flat plate portion 35, lower mold second flat plate portion 37) is bent and formed in a direction away from each other. The branch structure according to the above [1].
[3] The insulating layer (85) is formed on the front surface and the back surface of the flat plate portion (upper first flat plate portion 31, upper second flat plate portion 33, lower first flat plate portion 35, lower mold second flat plate portion 37). The branched structure according to the above [1] or [2], wherein at least one of them is formed by powder coating.
[4] The laminated conductive member (13) having the branch structure according to any one of the above [1] to [3] is an insulating housing case (upper split housing case 21 and lower split housing case 21). A branch box (11), characterized in that it is housed in 23).
[5] A plurality of the connection pieces (first connection pieces 47A to 47D and second connection pieces 49A to 49D, third connection pieces 51A to 51D, and fourth connection pieces 53A to 53D) project side by side. A plurality of divided storage cases each containing the plurality of the flat plate portions (upper first flat plate portion 31 and upper second flat plate portion 33, lower first flat plate portion 35 and lower mold second flat plate portion 37) laminated in this manner. The branch according to the above [4], wherein the (upper split accommodation case 21, lower split accommodation case 23) is integrally formed by stacking a plurality of the connection pieces so as to project vertically. Box (11).

11 ... Branch box 13 ... Laminated conductive member 15 ... Routing material 21 ... Upper split accommodation case (divided accommodation case)
23 ... Lower split storage case (split storage case)
31 ... Upper first flat plate portion (flat plate portion)
33 ... Upper second flat plate portion (flat plate portion)
35 ... Lower first flat plate portion (flat plate portion)
37 ... Lower second flat plate portion (flat plate portion)
39 ... Connection part of the first group (connection part)
41 ... Connection part of the second group (connection part)
43 ... Connection part (connection part) of the third group
45 ... Connection part of the 4th group (connection part)
47A to 47D ... First connection piece (connection piece)
49A-49D ... Second connection piece (connection piece)
51A to 51D ... Third connection piece (connection piece)
53A to 53D ... Fourth connection piece (connection piece)
85 ... Insulation layer 95, 97, 99, 101 ... Flat conductor (conductor)

Claims (5)

It is a branch structure for connecting a plurality of wiring materials composed of a plurality of conductors.
A plurality of flat portions that will be laminated made of a flat electrically conductive material,
A plurality of groups composed of a plurality of connecting pieces that protrude vertically and horizontally so as to have a predetermined interval in the stacking direction from the outer peripheral edge of each of the laminated flat plates and are connected corresponding to the plurality of conductors. Connection part and
An insulating layer provided between the plurality of flat plates and electrically insulating between the flat plates,
Equipped with a,
A branched structure characterized in that the plurality of flat plate portions are laminated via the insulating layer. It is a branch structure for connecting a plurality of wiring materials composed of a plurality of conductors.
Multiple flat plates made of flat conductive material and laminated,
A plurality of groups composed of a plurality of connecting pieces that protrude vertically and horizontally so as to have a predetermined interval in the stacking direction from the outer peripheral edge of each of the laminated flat plates and are connected corresponding to the plurality of conductors. Connection part and
An insulating layer provided between the plurality of flat plates and electrically insulating between the flat plates,
With
Branch structure vertically and projecting a plurality of said connecting piece, you characterized in that it is formed by bending the outer peripheral edge of said plate in a direction away from each other. The branched structure according to claim 1 or 2, wherein the insulating layer is formed by powder coating on at least one of the front surface and the back surface of the flat plate portion. A branch box characterized in that the laminated conductive member having the branch structure according to any one of claims 1 to 3 is housed in an insulating storage case. A plurality of divided accommodating cases accommodating a plurality of the flat plate portions in which the plurality of connection pieces are laminated so as to project horizontally are integrally formed by being stacked so as to project the plurality of connection pieces vertically. The branch box according to claim 4, wherein the branch box is characterized by the above.

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