JP5654324B2 - Electrical junction box - Google Patents

Description

  The present invention relates to an electrical junction box mounted on an automobile or the like as a moving body.

  In general, automobiles as moving bodies are equipped with a wide variety of electronic devices such as lamps such as head lamps and tail lamps, and motors such as motors for starter motors and air conditioners.

  In order to supply electric power to the various electronic devices described above, the automobile has arranged junction blocks at appropriate locations. The junction block is composed of various electric circuit units such as a large number of fuses and relays.

  Note that the junction block may include a fuse, a relay, a bus bar, and the like, and thus is also referred to as a fuse block, a relay box, or an electrical connection box. In the present specification, the above-described fuse block, relay box, and junction block are collectively referred to as an electric junction box (for example, refer to Patent Document 1).

  The electrical junction box shown in Patent Document 1 and the like includes a box body that forms an outer shell, and a wiring block that is accommodated in the box body. The box body includes an upper cover and a lower cover that are each made of an insulating synthetic resin and are attached to each other.

  The wiring unit includes a unit main body in which electrical components such as fuses and relays are attached only to the upper surface thereof, and terminals of a plurality of electric wires of the wire harness are attached to the lower surface of the wiring unit. A bus bar is provided for electrically connecting the components in accordance with a predetermined pattern. The bus bar is integrally provided with a power connection portion to which a power cable connected to a power source is connected, and a connection portion connected to the electrical component and the end of the electric wire.

  In the electrical junction box described above, power from the power source is supplied by a power cable, this power is branched by a bus bar, etc., passed through the fuses and relays described above, and then supplied to various electronic devices via the wires of the wire harness. Supply.

Japanese Patent Laid-Open No. 2004-23813

  In the conventional electrical junction box shown in Patent Document 1 described above, in order to replace electrical components such as relays and fuses, a mounting portion on which these electrical components are mounted only on the upper surface of the unit body of the wiring unit is provided. Provided. For this reason, as the number of electrical components increases, it is necessary to widen the upper surface of the unit body, which tends to make size reduction difficult.

  However, the automobile is desired to realize various functions according to the user's request, and the number of electronic devices to be mounted tends to increase. Therefore, in the above-described conventional electrical junction box, it is necessary to make the upper surface of the unit main body wider, and the size tends to increase.

  In addition, the automobile is desired to have better habitability according to a user's request, and it is required to widen the passenger compartment and narrow the space for mounting the above-described electrical junction box. However, since the above-described conventional electrical junction box itself becomes large, it is difficult to mount it in a narrower space.

  Accordingly, an object of the present invention is to provide an electrical junction box that can be installed in a narrower installation space of an automobile.

In order to solve the problems and achieve the object, an electrical junction box according to the present invention according to claim 1 includes a box body, a plurality of electric wire terminals of the wire harness, and electrical components housed in the box body. And a wiring unit that connects the plurality of electric wires and the electrical component according to a predetermined pattern, wherein the box body is formed from both width and thickness. The wiring unit is made of an insulating material and is housed in the box main body (however, an insulating plate in which a bus bar is integrally molded and wiring are printed. And a mounting portion provided at an edge in the width direction of the insulating plate and to which the electrical component and the end of the electric wire are attached, and made of conductive sheet metal and mounted on the mounting portion. And It is characterized by comprising: a bus bar to be connected to the electrical components mounted to the mounting portion to be mounted on the section.

  An electrical junction box according to a second aspect of the present invention is the electrical junction box according to the first aspect, wherein the box body includes an upper cover and a lower cover that are attached to each other, and a height of the upper cover. Is formed lower than the height of the lower cover, and a unit attaching portion to which the wiring unit is attached is provided on the upper cover.

  The electrical junction box according to a third aspect of the present invention is the electrical junction box according to the first aspect, wherein the box body includes an upper cover and a lower cover that are attached to each other, and the upper cover and the lower cover. It is characterized in that the heights are substantially equal.

The electrical junction box according to a fourth aspect of the present invention is the electrical junction box according to any one of the first to third aspects, wherein the mounting portions are on both edges of the insulating plate in the width direction. Each of the ends of the electric wire is provided on the side of the mounting portion where the mounting portions face each other .

The electrical junction box according to a fifth aspect of the present invention is the electrical junction box according to any one of the first to fourth aspects, wherein the insulating plate is attached to the edge in the width direction via a hinge. The parts are connected.

The electrical junction box according to a sixth aspect of the present invention is the electrical junction box according to any one of the first to fifth aspects, wherein the mounting portion is provided on each of both edges of the insulating plate in the width direction. The bus bar is connected via the hinge, and the bus bar includes a bus bar main body attached to the mounting portion and a power connection portion connected to a power source, and the power connection of the bus bar attached to each of the mounting portions. It is characterized in that the parts are closely stacked on each other.

  The electrical connection box of the present invention according to claim 7 is the electrical connection box according to claim 6, wherein the bus bar main body 23 of the bus bar 14 attached to each of the mounting portions 12 is arranged at an interval in the thickness direction A. It is characterized by being.

  An electrical junction box according to an eighth aspect of the present invention is the electrical junction box according to the sixth or seventh aspect, wherein the power source connection portion is provided at a position covered by the upper cover. Yes.

According to the electrical junction box of the present invention described in claim 1, since the height of the box body is formed to be larger than both the width and the thickness, the exclusive area seen from above can be reduced, and the size can be reduced. Can be achieved. In addition, since the mounting portion on which the electrical component is mounted is provided at the edge in the width direction of the insulating plate of the wiring unit, the electrical component is not mounted on the surface facing the upper cover of the wiring unit.

  According to the electrical junction box of the present invention as set forth in claim 2, since the unit attachment portion for attaching the wiring unit to the upper cover is provided, the upper cover is removed from the lower cover, so that the inside of the lower cover, that is, the inside of the box body. The wiring unit can be taken out.

  According to the electrical junction box of the present invention described in claim 3, since the height of the upper cover and the lower cover is formed to be substantially equal, when the upper cover is removed from the lower cover, the wiring unit is exposed outside the lower cover; Become.

In the electric connection box of the present invention as set forth in claim 4, each mounting portion electrical components are mounted are provided on both edges of the width direction of the insulating plate of the wiring unit, the terminal of the wire, the Since the mounting parts in the mounting part are mounted on the sides facing each other , the electrical component is attached to the side located on the outer side of the width direction of the insulating plate of the mounting part, and the terminal of the wire harness wire is insulated from the mounting part. It can attach to the side located inside the width direction of a board.

  According to the electrical junction box of the present invention as set forth in claim 5, since the hinge is provided between the insulating plate and the mounting portion, the mounting is performed with the mounting portion being bent with respect to the insulating plate by the hinge. A bus bar or an electric wire terminal can be attached to the section.

  According to the electrical junction box of the present invention described in claim 6, the mounting portions are provided at both edges in the width direction of the insulating plate, and the power connection portions of the bus bars attached to the respective mounting portions are closely overlapped with each other. Therefore, a power supply can be reliably connected to each bus bar.

  According to the electrical junction box of the present invention as set forth in claim 7, since the bus bar main bodies of the bus bars attached to the respective mounting portions are arranged at intervals in the thickness direction, the wires of the wire harness attached to the respective mounting portions Can be passed between each mounting part and the bus bar body of the bus bar attached to the other mounting part.

  According to the electrical connection box of the present invention described in claim 8, since the power connection portion of the bus bar is provided at a position covered by the upper cover, liquid such as water adheres to the power connection portion by the upper cover. Can be prevented.

As described above, according to the first aspect of the present invention, the area occupied from the top can be reduced and the size can be reduced, so that it can be installed in a narrower installation space. In addition, since no electrical component is mounted on the surface of the wiring unit that faces the upper cover, the surface of the wiring unit that faces the upper cover is widened even if the number of electrical components mounted on the mounting portion increases. There is no need. For this reason, it is possible to reduce the size of the electrical junction box, and it is possible to attach it to a narrower installation space.

  According to the second aspect of the present invention, by removing the upper cover from the lower cover, the wiring unit can be taken out from the lower cover, that is, the box body, so that the wiring unit can be easily maintained.

  According to the third aspect of the present invention, when the upper cover is removed from the lower cover, the wiring unit is exposed outside the lower cover. Therefore, the wiring unit can be easily taken out from the lower cover, that is, from the box body. Can be easily maintained.

According to the fourth aspect of the present invention, the electrical component is attached to the side of the mounting portion that is positioned on the outer side in the width direction of the insulating plate, and the end of the wire harness is positioned on the inner side of the mounting portion of the insulating plate in the width direction. Since it can attach to the side, the electric wire of the said wire harness can be routed on the center part of an insulating board. Therefore, the space in which nothing is accommodated in the box body can be reduced as much as possible, and the space in the box body can be effectively utilized. Therefore, it becomes possible to achieve further miniaturization, and it is possible to reliably attach to a narrower installation space.

  According to the fifth aspect of the present invention, since the bus bar and the end of the electric wire can be attached to the mounting portion in a state where the mounting portion is bent with respect to the insulating plate by the hinge, the bus bar and the end of the electric wire can be easily attached. The wiring unit can be easily assembled.

  According to the sixth aspect of the present invention, the mounting portions are provided at both edges in the width direction of the insulating plate, and the power connection portions of the bus bars attached to the respective mounting portions are closely overlapped with each other. Can be connected to the power supply.

  According to the seventh aspect of the present invention, since the wires of the wire harness attached to each attachment portion can be passed between the respective attachment portions and the bus bar body of the bus bar attached to the other attachment portion, The space in which nothing is accommodated can be reduced as much as possible, and the space in the box body can be effectively utilized. Therefore, it becomes possible to achieve further miniaturization, and it is possible to reliably attach to a narrower installation space.

  According to the eighth aspect of the present invention, since the power connection portion of the bus bar is provided at a position covered by the upper cover, the upper cover can prevent liquid such as water from adhering to the power connection portion.

It is a perspective view of the electric junction box concerning a 1st embodiment of the present invention. It is a perspective view which decomposes | disassembles and shows the electrical-connection box shown by FIG. It is a perspective view which decomposes | disassembles and shows the wiring unit of the electrical-connection box shown by FIG. It is a top view which shows the state which attached the bus bar to the mounting part of the wiring unit shown by FIG. FIG. 5 is a plan view showing a state where a mounting portion of the wiring unit shown in FIG. 4 is overlaid on an insulating plate. It is a perspective view which shows the state which attached the bus bar to the mounting part of the wiring unit shown by FIG. FIG. 7 is a perspective view showing a state in which the mounting portion of the wiring unit shown in FIG. 6 is superimposed on an insulating plate. It is a perspective view which shows the state etc. which attached the electrical component to the mounting part of the wiring unit shown by FIG. It is a perspective view which shows the state which accommodated the wiring unit shown by FIG. 8 in the lower cover. It is a perspective view of the electrical junction box concerning a 2nd embodiment of the present invention. It is a perspective view which shows the state which attached the bus bar to the mounting part of the wiring unit of the electrical junction box shown by FIG. FIG. 12 is a perspective view illustrating a state in which the mounting unit of the wiring unit illustrated in FIG. 11 is overlaid on the insulating plate. FIG. 13 is a perspective view showing a state where an electrical component is attached to the mounting portion of the wiring unit shown in FIG. It is a perspective view which shows the state which attached the upper cover to the wiring unit shown by FIG. It is a perspective view which shows the state which removed the upper cover of the electrical-connection box shown by FIG. 10 from the lower cover. It is a top view which shows the state which attached the bus bar to the mounting part of the wiring unit of the modification of the electrical junction box of this invention. FIG. 17 is a plan view showing a state in which the mounting portion of the wiring unit shown in FIG. 16 is overlaid on the insulating plate.

  Hereinafter, an electrical junction box according to a first embodiment of the present invention will be described with reference to FIGS. The electrical junction box 1 shown in FIG. 1 according to the present embodiment is mounted on an automobile as a moving body. As shown in FIGS. 1 and 2, the electrical junction box 1 includes a box body 2 and a wiring unit 3. In the present embodiment, a direction in which an upper cover 4 and a lower cover 5 to be described later overlap each other is called a height direction T, and intersects (is orthogonal in the illustrated example) and intersects each other (illustrated example). The two directions orthogonal to each other are referred to as a width direction H and a thickness direction A. In the present specification, the dimension in the height direction T is called height, the dimension in the width direction H is called width, and the dimension in the thickness direction A is called thickness.

  The box body 2 includes an upper cover 4 and a lower cover 5 that are attached to each other. The upper cover 4 and the lower cover 5 are made of an insulating synthetic resin and are formed by a well-known injection molding. The upper cover 4 includes a flat ceiling wall 6 and four peripheral walls 7 erected from each outer edge of the ceiling wall 6. The lower cover 5 includes a flat bottom wall 8 and three peripheral walls 9 erected from three outer edges excluding one outer edge on the front side in FIG. 2 among the outer edges of the bottom wall 8. The upper cover 4 and the lower cover 5 are attached to each other in a state where the ceiling wall 6 and the bottom wall 8 are opposed to each other with a space therebetween and the openings surrounded by the peripheral walls 7 and 9 are closed.

  When the box cover 2 is attached with the upper cover 4 and the lower cover 5 being overlapped with each other, the height T1 described above is formed sufficiently larger than both the width H1 and the thickness A1 described above, and in the thickness direction A. It is flat and formed vertically long in the height direction T. Thus, the box body 2 has a dimension in one direction out of three dimensions intersecting (orthogonal) with each other sufficiently larger than the dimensions in the other two directions, and is long in one direction and short (thin) in the other. It is formed in a flat (column) rectangular parallelepiped shape. In the present embodiment, the box body 2 is mounted on an automobile with the height direction A along the vertical direction. In the present embodiment, as shown in FIG. 2, the height T1a of the upper cover 4 and the height T1b of the lower cover 5 are formed substantially equal to each other. Note that “substantially equal” as used in the present invention means that one of the lower heights of the upper cover 4 and the lower cover 5 is higher than ½ of the other height.

  As shown in FIG. 3, the wiring unit 3 includes an insulating plate 10, a nut 11, two mounting portions 12, one electric wire cover 13, and two bus bars 14. The insulating plate 10 is made of an insulating synthetic resin and is formed in a flat plate shape. The insulating plate 10 has a self hinge 15 as a hinge integrally connected to each of both edges in the width direction H described above. Further, the mounting portion 12 is integrally connected to the self hinge 15. For this purpose, the mounting portion 12 of the insulating plate 10 is connected to both edges in the width direction H via the self hinge 15.

  The insulating plate 10 positions each electric wire 16a of the wire harness 16 (shown in FIG. 8) routed to the automobile on the surface. A round hole 17 passes through the center of the insulating plate 10 in the width direction H and the height direction T.

  The self hinge 15 is made of the same insulating synthetic resin as the insulating plate 10 and extends linearly along the height direction T described above, and the thickness is larger than the thickness of the insulating plate 10. It is thin and flexible. For this reason, the self-hinge 15 connects the mounting portion 12 and the insulating plate 10 so as to be rotatable around an axis parallel to the height direction T. The self-hinge 15 is displaceable between the mounting portion 12 and the position where the mounting portion 12 is superimposed on the insulating plate 10 shown in FIG. 5 and the position where the mounting portion 12 is separated from the insulating plate 10 shown in FIG. The insulating plate 10 is rotatably connected to each other. In the illustrated example, the self-hinge 15 that is thinner than the insulating plate 10 and formed integrally with both the insulating plate 10 and the mounting portion 12 is shown as a hinge. However, the present invention is not limited to this. Instead, a so-called hinge having a rotating shaft or the like separate from the mounting portion 12 and the insulating plate 10 may be used.

  The nut 11 is overlaid on the back side of the insulating plate 10 in FIG. 3, that is, on the back side of the surface on which the mounting portion 12 of the insulating plate 10 overlaps, and a part of the nut 11 is passed through the round hole 17, and the screw The hole 11a is exposed.

  Each of the mounting portions 12 is formed in a cylindrical shape that is vertically long in the height direction T and has a plurality of inner sections. The mounting portion 12 is integrally connected to both edges of the insulating plate 10 via the self hinge 15 described above. The space in the mounting portion 12 extends linearly along the width direction H when the mounting portion 12 is stacked on the insulating plate 10. The mounting portion 12 has a FL (fusible link) 18 (shown in FIG. 8) and a fuse 19 (FIG. 8) on the side located outside in the width direction H when the mounting portion 12 is overlaid on the insulating plate 10. Etc.) are mounted. Further, when the mounting portion 12 is stacked on the insulating plate 10, the mounting portion 12 has each electric wire 16 a of the wire harness 16 routed in the automobile on the opposite sides positioned inside the width direction H. The terminal is installed.

  The electric wire cover 13 is provided integrally with the mounting portion 12 on the front side in FIG. The electric wire cover 13 integrally includes a flat cover main body 20 provided integrally with the mounting portion 12 and an electric wire holding piece 21 erected from the cover main body 20. The cover main body 20 is overlaid on the side located outside the mounting portion 12 in the width direction H. The cover main body 20 is inserted between the peripheral walls 9 of the lower cover 5 facing each other with a space therebetween, and closes the space between the peripheral walls 9. The electric wire holding piece 21 is erected from the cover main body 20 toward the outside of the box main body 2 when the cover main body 20 closes the space between the peripheral walls 9. When the cover main body 20 closes the space between the peripheral walls 9, the electric wire holding piece 21 guides each electric wire 16 a of the wire harness 16 into the box main body 2 from the space between the bottom wall 8 and the bottom wall 8. The wire cover 13 is wound around the outer periphery of the wire holding piece 21 together with the corrugated tube 22 through which the wire harness 16 and the power cable 27 pass, and the wire 16 a and the power cable 27 of the wire harness 16 are passed through the corrugated tube 22. Is fixed.

  The bus bar 14 is obtained by punching a conductive sheet metal. The bus bar 14 has a rectangular shape in plan and a bus bar main body 23 attached to the mounting portion 12 described above, a plurality of terminal portions 24 provided on the outer edge of the bus bar main body 23, and a power connection portion connected to the bus bar main body 23. 25 are integrated. The bus bar body 23 is located in the mounting portion 12. The terminal portion 24 is positioned in the mounting portion 12 and is connected to terminals of electrical components such as the FL 18 and the fuse 19 that are attached to the mounting portion 12. As shown in FIG. 5, the power connection portions 25 of the bus bars 14 attached to the mounting portions 12 are provided at positions where they overlap closely with each other as shown in FIG. 5 when the mounting portions 12 are stacked on the insulating plate 10.

  The power supply connection portion 25 has a round hole 26 therethrough. The round hole 26 of the power supply connecting portion 25 communicates with the screw hole 11a of the nut 11 described above when the mounting portion 12 is overlaid on the insulating plate 10.

  In the above-described bus bar 14, when the mounting portion 12 is overlapped on the insulating plate 10, the round hole 26 of the power connection portion 25 communicates with the screw hole 11 a of the nut 11 provided in the insulating plate 10. The bus bar 14 is overlaid with an electrical contact portion 29 of a terminal fitting 28 (shown in FIG. 8) attached to a terminal of a power cable 27 (shown in FIG. 8) connected to a power source such as an automobile battery or a generator. The bolt 31 (shown in FIG. 8) that passes through the through hole provided in the electrical contact portion 29 and the round hole 26 is screwed into the nut 11, so that the power source described above is connected to the power source connecting portion 25. In addition, the bus bar 14 is connected to the terminal portion 24 at the terminal of the electrical component mounted on the mounting portion 12. In this way, the bus bar 14 branches the power supplied from the power source and supplies it to each electrical component.

  The wiring unit 3 having the above-described configuration is such that the mounting portion 12 is separated from the insulating plate 10 by the self hinge 15 (the mounting portion 12 is bent with respect to the insulating plate 10). The terminal of each electric wire 16a of the wire harness 16 is attached. Then, the mounting portion 12 is overlapped on the insulating plate 10 by rotating the mounting portion 12 with respect to the insulating plate 10 around the self hinge 15. Then, the terminal fitting 28 of the terminal of the power cable 27 is attached to the power supply connecting portion 25 of the bus bar 14 with the bolt 31 and the nut 11, and electrical parts such as the FL 18 and the fuse 19 are attached to the attachment portion 12, A terminal of the electrical component is connected to the terminal portion 24 of the bus bar 14. And each electric wire 16a of the wire harness 16 connects directly to the terminal of the electrical component with which the mounting part 12 was mounted | worn. Thus, the wiring unit 3 is assembled. The wiring unit 3 assembled in this way is accommodated between the upper cover 4 and the lower cover 5, that is, in the box body 2. The wiring unit 3 having the above-described configuration branches the power supplied from the power source, passes the branched power through each electrical component, and then passes through the electric wires 16a of the wire harness 16 to the wire harness 16. The electric wire 16a is supplied to an electronic device mounted on the automobile. In this way, the wiring unit 3 connects the electric wires 16a constituting the wire harness 16 and the electrical components mounted on the mounting portion 12 according to a predetermined pattern.

  The electrical junction box 1 having the above-described configuration is assembled as follows. First, as shown in FIG. 6, in a state where the mounting portion 12 is separated from the insulating plate 10 (a state where the mounting portion 12 is bent with respect to the insulating plate 10), the bus bar 14 is attached to each mounting portion 12 and insulated. A nut 11 is attached to the plate 10. Furthermore, after passing the wire harness 16 and the power cable 27 through the corrugated tube 22, the terminals of the electric wires 16 a constituting the wire harness 16 are attached to the mounting portion 12. Then, the mounting portion 12 is rotated with respect to the insulating plate 10 around the self hinge 15, and the mounting portion 12 is overlaid on the insulating plate 10 as shown in FIG. 7.

  After that, as shown in FIG. 8, electrical parts such as FL 18 and fuse 19 are attached to the mounting portion 12, and the terminal fitting 28 attached to the terminal of the power cable 27 is attached to the power connection portion 25 of the bus bar 14 with the bolt 31. A tape is wound around the outer periphery of the corrugated tube 22 and the wire holding piece 21 to fix them. In this way, the wiring unit 3 is assembled, and the power cable 27 and the wire 16 a of the wire harness 16 are attached to the wiring unit 3.

  Then, after the wiring unit 3 is accommodated in the lower cover 5 as shown in FIG. 9, the upper cover 4 is attached to the lower cover 5 as shown in FIG. 1. Thus, the electrical junction box 1 is assembled. The electrical junction box 1 having the above-described configuration is mounted in an installation space such as an engine room of an automobile in a state where the height direction T is along the vertical direction.

  According to this embodiment, since the height T1 of the box body 2 is formed to be larger than both the width H1 and the thickness A1, the exclusive area viewed from above the electrical junction box 1 can be reduced, and the size can be reduced. Can be achieved. Therefore, the electrical junction box 1 can be attached to a narrower installation space of the automobile.

  Further, since the height T1a of the upper cover 4 and the height T1b of the lower cover 5 are formed to be substantially equal, when the upper cover 4 is removed from the lower cover 5, the wiring unit 3 is exposed outside the lower cover 5. Therefore, when the upper cover 4 is removed from the lower cover 5, the wiring unit 3 can be easily taken out from the lower cover 5, that is, the box body 2, and the wiring unit 3 can be easily maintained.

  Furthermore, since the mounting part 12 to which the electrical component is mounted is provided at the edge in the width direction H of the insulating plate 10 of the wiring unit 3, the electrical component is mounted on the surface facing the upper cover 4 of the wiring unit 3. There is nothing. For this reason, even if the number of electrical components mounted on the mounting portion 12 increases, it is not necessary to widen the surface of the wiring unit 3 that faces the upper cover 4. For this reason, the electrical junction box 1 can be reduced in size, and the electrical junction box 1 can be attached to a narrower installation space.

  Moreover, since the mounting part 12 to which the electrical component is mounted is provided at the edge in the width direction H of the insulating plate 10 of the wiring unit 3, the electrical component is positioned outside the width direction H of the insulating plate 10 of the mounting part 12. The end of the electric wire 16a of the wire harness 16 can be attached to the side located in the width direction H of the insulating plate 10 of the mounting portion 12. For this reason, the electric wire 16 a of the wire harness 16 can be routed on the central portion of the insulating plate 10. Therefore, the space in which nothing is accommodated in the box body 2 can be reduced as much as possible, and the space in the box body 2 can be effectively utilized. Therefore, it is possible to further reduce the size of the electrical junction box 1, and it is possible to reliably attach it to a narrower installation space of the automobile.

  Since the self-hinge 15 is provided between the insulating plate 10 and the mounting portion 12, the mounting portion 12 is separated from the insulating plate 10 by the self-hinge 15 (the mounting portion 12 is bent with respect to the insulating plate 10. The terminal of each electric wire 16a which comprises the bus bar 14 and the wire harness 16 can be attached to the mounting part 12. For this reason, the terminal of each electric wire 16a which comprises the bus bar 14 and the wire harness 16 can be easily attached to the mounting part 12, and the wiring unit 3 can be assembled easily. In addition, since the power connection portions 25 of the bus bars 14 are closely overlapped with each other, the power can be reliably connected to each bus bar 14.

  In the above-described embodiment, the power supply connecting portion 25 is provided in the center in the width direction H and the height direction T of the bus bar main body 23 of the bus bar 14, but in the present invention, the power supply connecting portion 25 is provided in the bus bar main body of the bus bar 14. 23 may be provided at the end portion of the height direction T near the upper cover 4, and the power supply connection portion 25 may be provided at a position covered by the upper cover 4. In this case, since the power connection portion 25 of the bus bar 14 is provided at a position covered by the upper cover 4, liquid such as water that has entered from the gap between the covers 4 and 5 by the upper cover 4 enters the power connection portion 25. It can prevent adhesion.

  Next, an electrical junction box 1 according to a second embodiment of the present invention will be described with reference to FIGS. Note that the same parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  In the present embodiment, as in the first embodiment described above, the direction in which the upper cover 4 and the lower cover 5 overlap each other is referred to as a height direction T, and intersects the height direction T (orthogonal in the illustrated example). Two directions intersecting each other (orthogonal in the illustrated example) are referred to as a width direction H and a thickness direction A.

  In the present embodiment, as shown in FIG. 15, the height T2a of the upper cover 4 is not substantially equal to the height T2b of the lower cover 5, and the height T2a of the upper cover 4 is sufficiently larger than the height T2b of the lower cover 5. It is formed low. Note that the height T2a of the upper cover 4 referred to in the present invention is sufficiently lower than the height T2b of the lower cover 5 that the height T2b of the lower cover 5 is more than twice the height T2a of the upper cover 4. It's expensive. In the present embodiment, the box body 2 is mounted on an automobile with the height direction A along the vertical direction.

  In the present embodiment, as shown in FIG. 14, the upper cover 4 is provided with a plurality of engagement holes 32 as unit attachment portions, and the wiring unit 3 is provided with an engagement protrusion 33. The engagement hole 32 is a hole that penetrates the peripheral wall 7 of the upper cover 4. The engaging projection 33 is a projection that protrudes from the outer surface of the mounting portion 12 at the end portion of each mounting portion 12 of the wiring unit 3 near the upper cover 4. The engagement protrusion 33 enters the engagement hole 32 and engages with the engagement hole 32. The engagement projection 32 is inserted into the engagement hole 32 to attach the wiring unit 3 to the upper cover 4.

  In the present embodiment, the power connection portion 25 of the bus bar 14 is provided at the end of the bus bar main body 23 of the bus bar 14 near the upper cover 4 in the height direction T, and the power connection portion 25 covers the upper cover 4. It is provided at the position to be called.

  Further, in the present embodiment, a cable holding piece 34 that holds the power cable 27 is integrally provided at the end of each mounting portion 12 near the upper cover 4 in the height direction T. When the mounting portion 12 is stacked on the insulating plate 10, the cable holding piece 34 is formed in a band plate shape extending from the mounting portion 12 along the surface of the insulating plate 10, that is, the width direction H. The power cable 27 and the wire harness 16 are positioned above, and the paths of the electric wires 16a of the power cable 27 and the wire harness 16 are regulated.

  The electrical junction box 1 of this embodiment is assembled as follows. First, as shown in FIG. 11, the bus bar 14 is attached to each attachment portion 12 and the nut 11 is attached to the insulation plate 10 in a state where the attachment portions 12 are separated from the insulation plate 10. Furthermore, after passing the wire harness 16 and the power cable 27 through the corrugated tube 22, the terminals of the electric wires 16 a constituting the wire harness 16 are attached to the mounting portion 12. Then, the mounting portion 12 is rotated with respect to the insulating plate 10 around the self hinge 15, and the mounting portion 12 is overlaid on the insulating plate 10 as shown in FIG. 12.

  After that, as shown in FIG. 13, electrical parts such as FL 18 and fuse 19 are attached to the mounting portion 12, and the terminal fitting 28 attached to the terminal of the power cable 27 is attached to the power connection portion 25 of the bus bar 14 with the bolt 31. In this way, the wiring unit 3 is assembled, and the power cable 27 and the wire 16 a of the wire harness 16 are attached to the wiring unit 3.

  Then, as shown in FIG. 14, the engagement protrusion 33 is engaged with the engagement hole 32 and the upper cover 4 is attached to the wiring unit 3, and then the upper cover 4 is attached to the lower cover 5 as shown in FIG. 10. Install. Thus, the electrical junction box 1 is assembled. The electrical junction box 1 having the above-described configuration is mounted in an installation space such as an engine room of an automobile in a state where the height direction T is along the vertical direction.

  According to the present embodiment, in addition to the effects of the first embodiment described above, the engagement hole 32 is provided as a unit attachment portion to which the wiring unit 3 is attached to the upper cover 4, and as shown in FIG. Further, by removing the upper cover 4 from the lower cover 5, the wiring unit 3 can be taken out from the lower cover 5, that is, the box body 2. For this reason, the wiring unit 3 can be easily maintained.

  Further, the power connection portion 25 is provided at an end portion of the bus bar 14 near the upper cover 4 in the height direction T of the bus bar body 23, and the power connection portion 25 is provided at a position covered by the upper cover 4. For this reason, since the power connection portion 25 of the bus bar 14 is provided at a position covered by the upper cover 4, liquid such as water that has entered through the gap between the covers 4 and 5 by the upper cover 4 is supplied to the power connection portion 25. Can be prevented.

  In the first and second embodiments described above, when the mounting portions 12 are stacked on the insulating plate 10, the bus bar main body 23 of the bus bar 14 attached to each mounting portion 12 is provided at a position where they overlap each other. 16 and FIG. 17, when the mounting portions 12 are stacked on the insulating plate 10, the bus bar bodies 23 of the bus bars 14 attached to the mounting portions 12 are parallel to each other and spaced in the thickness direction A. The bus bar 14 may be configured such that the power supply connection portions 25 are arranged and closely overlap each other. 16 and 17, the same parts as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted. In this case, as shown in FIGS. 16 and 17, the power connection portion 25 of one bus bar 14 is configured to be connected to the distal end of a coupling portion 35 bent from the bus bar main body 23. And as shown in FIG. 17, the electric wire 16a of the wire harness 16 attached to each mounting part 12 is passed between each mounting part 12 and the bus bar main body 23 of the bus bar 14 attached to the other mounting part 12. .

  In the cases shown in FIGS. 16 and 17, the mounting portions 12 are provided on both edges in the width direction H of the insulating plate 10, and the bus bar main bodies 23 of the bus bars 14 attached to the mounting portions 12 are respectively in the thickness direction A. Since the wires 16a of the wire harness 16 attached to each mounting part 12 are passed through the bus bar main body 23 of the bus bar 14 attached to each of the mounting parts 12 and the other mounting part 12 because they are arranged at intervals. Can do. For this reason, the space in which nothing is accommodated in the box body 2 can be reduced as much as possible, and the space in the box body 2 can be effectively utilized. Therefore, it is possible to further reduce the size of the electrical junction box 1, and the electrical junction box 1 can be reliably attached to a narrower installation space.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Electrical junction box 2 Box body 3 Wiring unit 4 Upper cover 5 Lower cover 10 Insulating plate 12 Mounting part 14 Bus bar 15 Self hinge (hinge)
16 Wire harness 16a Electric wire 18 FL (Electrical component)
19 Fuses (electrical parts)
23 Busbar body 25 Power supply connection part H Width direction T1 Height H1 Width A1 Thickness T1a, T2a Upper cover height T1b, T2b Lower cover height

Claims (8)

The box body,
A wiring unit that is housed in the box body and that is mounted with terminals and electrical components of a plurality of wires of a wire harness, and that connects the plurality of wires and the electrical components according to a predetermined pattern; In an electrical junction box with
The box body is formed with a height larger than both width and thickness ,
The wiring unit is made of an insulating material and is housed in the box body (however, an insulating plate in which a bus bar is integrally molded, and an insulating plate on which a conductive wiring pattern is printed) And a mounting portion provided at an edge in the width direction of the insulating plate and to which the electrical component and the end of the electric wire are attached, and made of conductive sheet metal and mounted on the mounting portion. An electrical connection box comprising: a bus bar connected to the electrical component attached to the mounting portion when mounted on the mounting portion. The box body includes an upper cover and a lower cover attached to each other;
2. The electrical junction box according to claim 1, wherein a height of the upper cover is formed lower than a height of the lower cover, and a unit attaching portion to which the wiring unit is attached is provided on the upper cover. . The box body includes an upper cover and a lower cover attached to each other;
The electrical junction box according to claim 1, wherein the upper cover and the lower cover are substantially equal in height. The mounting portions are provided on both edges in the width direction of the insulating plate,
The electrical junction box according to any one of claims 1 to 3, wherein the end of the electric wire is mounted on a side where the mounting portions of the mounting portion face each other. The electrical connection box according to any one of claims 1 to 4, wherein the mounting portion is coupled to an edge in the width direction of the insulating plate via a hinge. The mounting portion is connected to both edges in the width direction of the insulating plate via the hinges,
The bus bar includes a bus bar main body attached to the mounting portion, and a power connection portion connected to a power source,
6. The electrical connection box according to claim 1 , wherein the power connection portions of the bus bars attached to the mounting portions are closely stacked on each other. 7.   The electrical junction box according to claim 6, wherein the bus bar main body of the bus bar attached to each of the mounting portions is disposed with a gap in the thickness direction.   The electrical connection box according to claim 6, wherein the power supply connection portion is provided at a position covered by the upper cover.

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