JP5732996B2 - Electrical junction box - Google Patents

Description

  The present invention relates to an electrical junction box.

  Conventionally, the thing of patent document 1 is known as an electrical junction box. The electric junction box is arranged in parallel with the case, the electric wire arranged in the case, the circuit board accommodated in the case, and the plate surface of the circuit board in the case, and the electric wire is arranged therein. An insole.

  One end of an L-shaped terminal is attached to the insole in a state of penetrating the insole. The case is provided with a relay connector for mounting the relay. A relay can be fitted to the relay connector. The other end portion of the terminal described above penetrates through the relay connector and is disposed inside the relay connector. When the relay is fitted to the relay connector, the lead of the relay and the terminal are electrically connected.

JP 2000-92661 A

  According to the prior art, as shown in FIG. 2 of Patent Document 1, one end of the terminal protrudes from the relay connector into the case and is bent at a right angle toward the inner bottom. Furthermore, the terminals are arranged in two stages in the vertical direction in the relay connector, and the terminals arranged in the upper stage are fitted in the relay fitting direction (in FIG. 2) so as not to interfere with the terminals arranged in the lower stage. Left and right direction). As a result, there is a problem in that the area occupied by the terminals increases in the fitting direction of the relay, and the electrical connection box is enlarged.

  The present invention has been completed based on the above circumstances, and an object thereof is to provide a miniaturized electrical junction box.

The present invention is an electrical connection box, wherein the case, the electric wire routed in the case, the circuit board accommodated in the case, and the circuit in the case with a space from the circuit board. A plate-like routing member that is arranged in parallel to the plate surface of the substrate and in which the electric wire is routed, and is arranged in the case perpendicular to the plate surface of the routing member and the electric wire is arranged. And a plurality of relays disposed on the wiring board and electrically connected to the electric wire and the circuit board, the plurality of relays including a power terminal and a control terminal. A common bus bar for branching power from a power source to the plurality of relays is connected to the power terminals of the plurality of relays disposed on the wiring board, and the control terminal is the circuit. It is electrically connected to the conductive path of the substrate.

  According to the present invention, since the relay can be disposed on the wiring board arranged perpendicular to the plate surface of the wiring member, a connector for connecting the relay and a terminal connected to the connector become unnecessary. As a result, when the relay and the wiring member are electrically connected, there is no need to bend the terminals connected to the relay at a right angle, and the terminals do not have to be shifted so as not to interfere with each other. Since it is good, the electrical junction box can be miniaturized.

As embodiments of the present invention, the following embodiments are preferable.
It is preferable that the routing member and the routing board are made of synthetic resin, and the routing member and the routing board are integrally formed via a hinge portion having flexibility.

  According to said aspect, since a wiring member and a wiring board can be formed integrally, a number of parts can be reduced.

  The wiring board is formed with a flexible wiring board side hinge part, and the wiring board is arranged in the case in a bent posture at the wiring board side hinge part. Is preferred.

  According to said aspect, by bending a routing board in a routing board side hinge part, the shape of a routing board can be changed corresponding to the space in a case. Thereby, since the space in a case can be utilized effectively, the space efficiency of an electrical junction box can be improved.

  According to the present invention, the electrical junction box can be reduced in size.

The side view which shows the electrical-connection box concerning Embodiment 1 of this invention The perspective view which shows the state which removed the case of the electric junction box Enlarged view showing the electrical junction box The perspective view which shows the connection structure of a relay, a fuse terminal, a common bus bar, and a control bus bar Bottom view showing the connection structure of relay, fuse terminal, common bus bar, and control bus bar Side view showing connection structure of relay, fuse terminal, common bus bar, and control bus bar The perspective view which shows the connection structure of the bus bar for control, an electric wire, and a tab The perspective view which shows the manufacturing process of an electrical junction box The perspective view which shows the manufacturing process of an electrical junction box The perspective view which shows the manufacturing process of an electrical junction box The perspective view which shows the manufacturing process of an electrical junction box The perspective view which shows the manufacturing process of an electrical junction box The perspective view which shows the manufacturing process of an electrical junction box The perspective view which shows the state which removed the case of the electrical-connection box which concerns on Embodiment 2 of this invention. The perspective view which shows the manufacturing process of an electrical junction box The perspective view which shows the manufacturing process of an electrical junction box Side view showing an electrical junction box according to Embodiment 3 of the present invention. The perspective view which shows the state which removed the case of the electric junction box Enlarged view showing the electrical junction box The perspective view which shows the connection structure of a relay, a fuse terminal, a common bus bar, and a control bus bar The perspective view which shows the connection structure of a relay, a fuse terminal, a common bus bar, and a control bus bar Side view showing connection structure of relay, fuse terminal, common bus bar, and control bus bar The perspective view which shows the connection structure of the bus bar for control, an electric wire, and a tab The perspective view which shows the manufacturing process of an electrical junction box The perspective view which shows the manufacturing process of an electrical junction box The perspective view which shows the manufacturing process of an electrical junction box The perspective view which shows the manufacturing process of an electrical junction box The perspective view which shows the manufacturing process of an electrical junction box

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS. The present embodiment is an electrical junction box 10 mounted on a vehicle (not shown). The electrical junction box 10 is disposed between a power source (not shown) and a load (not shown) such as a motor and a lamp, and energizes or cuts off the power from the power source. . The electrical junction box 10 includes a case 11 made of synthetic resin and a circuit board 12 accommodated in the case 11. In the following description, the vertical direction is based on FIG.

  A circuit board 12 in which a conductive path (not shown) is formed by a printed wiring technique is accommodated in the lower part of the case 11. The circuit board 12 is arranged such that its plate surface is parallel to the bottom wall of the case 11. An electronic component 13 is mounted on the upper surface of the circuit board 12 and is electrically connected to a conductive path formed on the circuit board 12.

  In the case 11, the synthetic resin routing member 14 is formed in a plate shape in a position parallel to the plate surface of the circuit board 12 at a position above the circuit board 12 and spaced from the circuit board 12. Is arranged. The routing member 14 has a substantially rectangular shape when viewed from above. Legs 15 projecting downward are formed at the four corners of the routing member 14. The lower end portion of the leg portion 15 is in contact with the plate surface of the circuit board 12 from above.

  A plurality of relays 16 </ b> A are disposed on the lower surface of the routing member 14. As shown in FIG. 9, the relay 16A includes a power terminal 17A through which a relatively large current flows, and a control terminal (not shown) through which a control signal for controlling on / off of the power terminal 17A flows.

  A control bus bar 19A is connected to the control terminal. The control bus bar 19A is bent at a right angle toward the relay 16A side (see FIG. 9). As shown in FIG. 1, the control bus bar 19 </ b> A extends toward the circuit board 12 with the relay 16 </ b> A disposed on the routing member 14. The end of the control bus bar 19A penetrates the circuit board 12 and is electrically connected to a conductive path formed on the circuit board 12 by a known method such as soldering.

  A power bus bar 20A is connected to the power terminal 17A. The end portion of the power bus bar 20A is a press contact terminal divided into two. The end portion of the power bus bar is bent at a substantially right angle and penetrates the wiring member 14. As shown in FIG. 2, a pair of guide portions 21 </ b> A protrudes upward on the upper surface of the routing member 14. A pressure contact terminal is disposed inside the guide portion 21A.

  As shown in FIG. 2, a plurality of wires (routing member side wires) 22 are routed on the upper surface of the routing member 14. The electric wire 22 is formed by surrounding an outer periphery of a single core wire made of a metal such as aluminum, an aluminum alloy, copper, or a copper alloy with an insulating coating. The electric wire 22 is sandwiched between the pair of guide portions 21A. When the electric wire 22 is sandwiched between the guide portions 21A, the press contact terminal disposed in the guide portion 21A breaks the insulation coating, and the press contact terminal and the single core wire are electrically connected. Thereby, the electric wire 22 and the power terminal 17A of the relay 16A are electrically connected.

  Two connector blocks 23 and one fuse block 24 are arranged on the side surface of the case 11. The connector block 23 is made of a synthetic resin, and can be fitted with a mating connector (not shown). Inside the connector block 23, one end of a rod-shaped terminal fitting 25A is disposed. The other end of the terminal fitting 25 </ b> A penetrates the connector block 23 and protrudes into the case 11, and is bent downward at a substantially right angle toward the circuit board 12. The other end of the terminal fitting 25A penetrates the circuit board 12 and is electrically connected to a conductive path formed on the circuit board 12 by a known method such as soldering.

  In the case 11, a pressure contact terminal block 26 having a plate shape made of synthetic resin is disposed at a position inside the connector block 23. A pair of guide portions 21 </ b> C projecting upward is formed on the upper surface of the press contact terminal block 26. Inside the pair of guide portions 21C, a terminal fitting 25B in which a press contact terminal divided into two is formed at one end portion is arranged. When the electric wire 22 is sandwiched between the pair of guide portions 21C, the insulation coating is broken by the press contact terminal, and the press contact terminal and the single core wire are electrically connected. As shown in FIG. 13, the other end of the terminal fitting 25 </ b> B is arranged at a position near the upper end of the connector block 23. Thereby, the electric wire 22 and the other party connector are electrically connected.

  As shown in FIG. 1, a flexible hinge portion 27 is formed on an end edge of the routing member 14 located on the fuse block 24 side. A synthetic resin wiring plate 28 is formed integrally with the wiring member 14 at the end of the hinge portion 27 opposite to the wiring member 14. The routing member 14, the hinge portion 27, and the routing plate 28 are integrally formed of synthetic resin. As a molding method, any method such as injection molding or transfer molding can be used as necessary.

  The hinge portion 27 can be bent by being formed thinner than the thickness dimension of the routing member 14 and the thickness dimension of the routing plate 28. By bending the hinge portion 27, the plate surface of the routing member 14, the routing plate 28, and the plate surface are vertical.

  The fuse block 24 is made of synthetic resin, and can be fitted with a fuse (not shown). Inside the fuse block 24, one end of a fuse terminal 29A is disposed. The other end of the fuse terminal 29 </ b> A protrudes into the case 11 through the fuse block 24.

  As shown in FIG. 3, the other end of the fuse terminal 29 </ b> A arranged near the upper end of the fuse block 24 is positioned inward of the case 11 (FIG. 3) at a position near the upper end of the routing plate 28. Are arranged inside a pair of guide portions 21B formed so as to protrude to the left. The other end portion of the fuse terminal 29A arranged inside the guide portion 21B is a pressure contact terminal having a bifurcated tip. By holding the electric wire (routing board side electric wire) 22 inside the pair of guide portions 21B, the press contact terminal breaks the insulation coating, and the press contact terminal and the single core wire are electrically connected. .

  The routing board 28 is formed with a relay pedestal 30 that protrudes inward (leftward in FIG. 3) of the case 11 and in which the relay 16B is disposed, in the vicinity of the approximate center in the vertical direction. The relay pedestal 30 is provided with the other end of the fuse terminal 29B arranged near the center in the vertical direction of the fuse block 24 and the relay 16B. The relay 16 </ b> B is disposed on the opposite side of the fuse block 24 with respect to the wiring board 28.

  As shown in FIG. 4, a plurality of tuning fork terminals divided into two forks are formed at one end of the fuse terminal 29B. The tuning fork terminal is arranged in the fuse block 24 and is connected to the fuse. The other end of the fuse terminal 29B has a plate shape and is bent at a right angle to the tuning fork terminal. The power terminal 17B of the relay 16B is connected to the other end of the fuse terminal 29B by a known method such as soldering.

  5 and 6, a common bus bar 31 connected to a power source is connected to the power terminal 17B of the relay 16B by a known method such as soldering. A plurality of relays 16B are connected to the common bus bar 31, and power from the power source is branched to the plurality of relays 16B.

  5 and 6, a control bus bar 19B is connected to the control terminal 18B of the relay 16B by a known method such as soldering. As shown in FIG. 4, a pressure contact terminal divided into two forks is formed at one end of the control bus bar 19B. As shown in FIG. 8, the press contact terminal of the control bus bar 19 </ b> B is inserted between a pair of guide portions 21 </ b> B formed on the wiring board 28. By sandwiching one end of the electric wire 22 between the pair of guide portions 21B, the press contact terminal breaks the insulation coating, and the press contact terminal and the single core wire are electrically connected. As shown in FIG. 7, the other end of the electric wire 22 is electrically connected to a tab 33 having a press contact terminal divided into two at the upper end. The lower end of the tab 33 penetrates the circuit board 12 and is electrically connected to a conductive path formed on the circuit board 12 by a known method such as soldering.

  As shown in FIG. 12, one end of the connection terminal 32 is arranged inside the fuse block 24 at a position near the lower end of the fuse block 24. The other end of the connection terminal 32 is bent downward. As shown in FIG. 3, the other end of the connection terminal 32 penetrates the circuit board 12 and is electrically connected to a conductive path formed on the circuit board 12 by a known method such as soldering.

(Example of manufacturing process)
Then, an example of the manufacturing process of the electrical junction box 10 which concerns on this embodiment is demonstrated. First, the wiring board 28, the hinge part 27, and the wiring member 14 are shape | molded with a synthetic resin. In this state, the hinge portion 27 has not been bent yet. Next, the electric wires 22 are routed on the upper surfaces of the routing plate 28 and the routing member 14. Further, the electric wires 22 are also routed on the upper surface of the press contact terminal block 26 (see FIG. 8).

  Next, the relay 16A, the power bus bar 20A, and the control bus bar 19A are reflow soldered. Also, the relay 16B, the fuse terminal 29B, the common bus bar 31, and the control bus bar 19B are reflow soldered.

  Subsequently, as shown in FIG. 8, the relay 16 </ b> B to which the fuse terminals 29 </ b> B and the like are connected is disposed on the wiring board 28 from above the wiring board 28.

  Next, as illustrated in FIG. 9, the relay 16 </ b> A is disposed on the routing member 14 from the back side of the routing member 14, the routing plate 28, and the press contact terminal block 26.

  Subsequently, as shown in FIGS. 10 and 11, the hinge portion 27 is bent so that the plate surface of the routing plate 28 is perpendicular to the plate surface of the routing member 14. The routing unit and the routing member 14 are electrically connected by an electric wire 22. Therefore, when the hinge portion 27 is bent, the electric wire 22 is also bent, so that the wiring plate 28 and the wiring member 14 are arranged vertically while maintaining the electrical connection between the wiring portion and the wiring member 14. can do.

  Next, as shown in FIG. 12, the fuse block 24 in which the fuse terminals 29 </ b> A and 29 </ b> B, the common bus bar 31, and the connection terminal 32 are disposed is disposed on the wiring board 28.

  Thereafter, as shown in FIG. 13, the connector block 23, the wiring member 14 on which the fuse block 24 is disposed, and the like are disposed on the circuit board 12. The structure at this stage is shown in FIG. By accommodating this configuration in the case 11, the electrical junction box 10 is completed.

(Operation and effect of this embodiment)
According to the present embodiment, the relay 16 </ b> B is disposed on the routing plate 28, and the plate surface of the routing plate 28 and the plate surface of the routing member 14 are perpendicular to each other. This eliminates the need for connectors and terminals for connecting the relay 16B. As a result, when the relay 16B and the routing member 14 are electrically connected, there is no need to bend the terminals connected to the relay 16B at a right angle, and the terminals are shifted so as not to interfere with each other. Since it is not necessary, the electrical junction box 10 can be reduced in size.

  Further, according to the present embodiment, the routing member 14 and the routing plate 28 are integrally formed via the hinge portion 27. Thereby, compared with the case where the routing member 14 and the routing board 28 are formed separately, the number of parts can be reduced.

  Further, according to the present embodiment, the relays 16 </ b> A and 16 </ b> B can be distributed and arranged on the routing board 28 and the routing member 14. Thereby, since the heat generated from the relays 16A and 16B when energized is dispersed in the case 11, it is suppressed that the temperature becomes locally high in the case 11.

  Furthermore, according to the present embodiment, the relay 16B arranged on the routing board 28 is connected to the fuse block 24 by the common bus bar 31 and the fuse terminal 29B. Thereby, the heat generation amount in the path from the fuse block 24 to the relay 16B can be reduced. As a result, the inside of the case 11 can be further suppressed from locally becoming high temperature.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, as shown in FIG. 14, a relay 16 </ b> C is disposed on the upper surface of the routing member 14. As shown in FIG. 15, the control bus bar 19C connected to the relay 16C is bent at a right angle toward the opposite side of the relay 16C. Since the configuration other than the above is substantially the same as that of the first embodiment, the same members are denoted by the same reference numerals, and redundant description is omitted.

  When manufacturing the electrical junction box 10 according to the present embodiment, as shown in FIG. 15, the relay 16C connected to the control bus bar 19C and the power bus bar 20C is arranged from the upper surface of the routing member 14. The cord member 14 is disposed. Thereby, since it is not necessary to turn over the routing board 28 and the routing member 14 after performing the process of arrange | positioning the relay 16C to the routing board 28, the manufacturing process of the electrical junction box 10 can be simplified. Moreover, since the process which arrange | positions the relay 16C to the routing board 28 and the routing member 14 can be performed by the same process, working efficiency can be improved.

  After that, as shown in FIG. 16, the hinge portion 27 is bent so that the plate surface of the routing plate 28 and the plate surface of the routing member 14 become vertical.

  About the manufacturing process other than the above, since it is substantially the same as Embodiment 1, the overlapping description is abbreviate | omitted.

<Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIGS. As shown in FIG. 17, a flexible hinge portion 27 is formed on an end edge of the routing member 14 located on the fuse block 24 side. A synthetic resin wiring plate 28 is formed integrally with the wiring member 14 at the end of the hinge portion 27 opposite to the wiring member 14. The routing member 14, the hinge portion 27, and the routing plate 28 are integrally formed of synthetic resin. As a molding method, any method such as injection molding or transfer molding can be used as necessary.

  The hinge portion 27 can be bent by being formed thinner than the thickness dimension of the routing member 14 and the thickness dimension of the routing plate 28. By bending the hinge portion 27, the plate surface of the routing member 14, the routing plate 28, and the plate surface are vertical.

  As shown in FIG. 19, the two wiring board side hinge portions 40 are formed on the wiring board 28 in the vertical direction. The thickness dimension of this routing board side hinge part 40 is formed thinner than the thickness dimension of another part among the routing boards 28. Thereby, the routing board side hinge part 40 can be bend | folded.

  By bending these wiring board side hinge portions 40, the wiring board 28 is bent in a crank shape. More specifically, the wiring board 28 is bent upward when the hinge part 27 is bent, and further bent toward the fuse block 24 in the wiring board side hinge part 40 located on the lower side. Furthermore, it is bent upward in the wiring board side hinge part 40 located in the upper side. As a result, on the routing board 28, the lower vertical portion 41 positioned on the lower side and in a posture perpendicular to the plate surface of the routing member 14 is disposed above the lower vertical portion 41. And an upper vertical portion 42 in a posture perpendicular to the plate surface of the rope member 14.

  The upper vertical portion 42 is formed with a pair of guide portions 21 </ b> B that protrudes inward (rightward in FIG. 19) of the case 11. A pressure contact terminal formed at the end of the fuse terminal 29A is accommodated in the pair of guide portions 21B.

  As shown in FIG. 17, in the lower vertical portion 41, a relay 16D is arranged on the surface on the fuse block 24 side. As shown in FIGS. 17 and 18, in the present embodiment, the relay 16 </ b> A disposed on the routing member 14 and the relay 16 </ b> D disposed on the routing plate 28 include the routing member 14 and the routing. The plate 28 is not arranged in a region where the electric wire 22 is routed.

  As shown in FIG. 20, a plurality of tuning fork terminals divided into two forks are formed at one end of the fuse terminal 29D. The tuning fork terminal is arranged in the fuse block 24 and is connected to the fuse. The other end of the fuse terminal 29D has a plate shape and is bent at a right angle to the tuning fork terminal. As shown in FIG. 21, the power terminal 17D of the relay 16D is connected to the other end of the fuse terminal 29D by a known method such as soldering.

  As shown in FIGS. 21 and 22, a common bus bar 31 connected to the power source is connected to the power terminal 17D of the relay 16D by a known method such as soldering. A plurality of relays 16D are connected to the common bus bar 31, and power from the power source is branched to the plurality of relays 16D.

  21 and 22, a control bus bar 19D is connected to the control terminal 18D of the relay 16D by a known method such as soldering. As shown in FIG. 21, a pressure contact terminal divided into two forks is formed at one end of the control bus bar 19D. The press contact terminal of the control bus bar 19D is inserted between a pair of guide portions 21D formed on the wiring board 28. When one end of the electric wire 22 is sandwiched between the pair of guide portions 21D, the press contact terminal breaks the insulation coating, and the press contact terminal and the single core wire are electrically connected. As shown in FIG. 23, the other end of the electric wire 22 is electrically connected to a tab 33 having a press-contact terminal divided into two at the upper end. The lower end of the tab 33 penetrates the circuit board 12 and is electrically connected to a conductive path formed on the circuit board 12 by a known method such as soldering.

  Since the configuration other than the above is substantially the same as that of the first embodiment, the same members are denoted by the same reference numerals, and redundant description is omitted.

(Example of manufacturing process)
Then, an example of the manufacturing process of the electrical junction box 10 which concerns on this embodiment is demonstrated. First, the wiring board 28, the hinge part 27, and the wiring member 14 are shape | molded with a synthetic resin. In this state, the hinge portion 27 has not been bent yet. Next, the electric wires 22 are routed on the upper surfaces of the routing plate 28 and the routing member 14. Further, the electric wires 22 are also routed on the upper surface of the press contact terminal block 26 (see FIG. 24).

  Next, the relay 16A, the power bus bar 20A, and the control bus bar 19A are reflow soldered. Further, the relay 16D, the fuse terminal 29D, the common bus bar 31, and the control bus bar 19D are reflow soldered.

  Subsequently, as shown in FIG. 25, the routing board 28 and the routing member 14 on which the electric wires 22 are routed are turned over, and the relays 16 </ b> A and 16 </ b> D are arranged from the back side of the routing board 28 and the routing member 14. .

  Next, as shown in FIG. 26, the routing board 28 and the routing member 14 are turned over again. Subsequently, as shown in FIG. 27, the hinge portion 27 is bent and the routing plate side hinge portion 40 is bent, whereby the routing plate 28 is bent into a crank shape.

  Next, as shown in FIG. 28, the fuse block 24 in which the fuse terminal 29A, the common bus bar 31, and the connection terminal 32 are arranged is arranged on the wiring board 28, and further, the connector is connected to the circuit board 12. The block 23 and the routing member 14 in which the fuse block 24 is arranged are disposed. The configuration at this stage is shown in FIG. By accommodating this configuration in the case 11, the electrical junction box 10 is completed.

(Operation and effect of the embodiment)
According to the present embodiment, the wiring board 28 is formed with the flexible wiring board side hinge 40, and the wiring board 28 is bent at the wiring board 28 side hinge in the case 11. It is arranged inside. Thereby, the shape of the routing board 28 can be changed corresponding to the space in the case 11 by bending the routing board 28 at the routing board 28 side hinge. As a result, since the space in the case 11 can be used effectively, the space efficiency of the electrical junction box 10 can be improved.

  Moreover, according to this embodiment, the wiring board 28 is formed with a plurality (two in this embodiment) of wiring board side hinges 40, and the wiring board 28 is bent at a plurality of locations. Yes. Thereby, since the shape of the wiring board 28 can be freely changed corresponding to the space in the case 11, the space efficiency of the electrical junction box 10 can be further improved.

  Further, according to the present embodiment, the fuse terminal 29 </ b> A is disposed on the upper wiring board 28. Since the upper wiring board 28 is bent in a crank shape and arranged close to the fuse block 24, the length dimension of the fuse terminal 29A can be shortened. As a result, the amount of heat generated in the wiring path of the fuse terminal 29A can be reduced.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the present embodiment, the routing member 14 and the routing plate 28 are formed integrally with each other via the hinge portion 27. However, the configuration is not limited to this, and the routing member 14 and the routing plate 28 are provided. It is good also as a structure formed separately from.
(2) In the present embodiment, two wiring board side hinges 40 are formed. However, the present invention is not limited to this, and the number of wiring board side hinges 40 may be one, or three or more. A plurality of these may be used.

DESCRIPTION OF SYMBOLS 10 ... Electric junction box 11 ... Case 12 ... Circuit board 14 ... Routing member 16 ... Relay 22 ... Electric wire 27 ... Hinge part 28 ... Routing board 40 ... Routing board side hinge part

Claims (3)

A case, an electric wire routed in the case, a circuit board accommodated in the case, and a parallel arrangement with respect to the plate surface of the circuit board in the case with a space from the circuit board. A plate-like routing member in which the electric wire is routed, a routing plate that is arranged in the case perpendicular to the plate surface of the routing member, and in which the electric wire is routed, and the routing A plurality of relays disposed on a plate and electrically connected to the electric wire and the circuit board ,
The plurality of relays include a power terminal and a control terminal,
A common bus bar that branches power from a power source to the plurality of relays is connected to the power terminals of the plurality of relays disposed on the wiring board,
The control terminal is an electrical connection box electrically connected to a conductive path of the circuit board . The wiring member and the wiring board are made of synthetic resin, and the wiring member and the wiring board are integrally formed via a flexible hinge portion. Electrical junction box. The wiring board is formed with a flexible wiring board side hinge part, and the wiring board is arranged in the case in a bent posture at the wiring board side hinge part. The electrical junction box according to claim 1 or claim 2.

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