JP2013034282A - Electrical junction box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized electrical junction box having excellent workability of assembling electrical component blocks into a box body, in which the box body has a simple structure.SOLUTION: An electrical junction box 1 comprises: a box body 2 which is formed in a frame-shape by outer walls continuous with each other; electrical component blocks which are mounted on the box body 2 in a vertical direction Z by having a plurality of stages, and to which electrical components are attached; and a power supply distribution block 10 which is mounted on the box body 2 and distributes power from a power supply. In an electrical component block 8 in an upper stage, an attachment part 32 to which an electrical component is attached is provided on an upper surface of the electrical component block 8 in the upper stage, and a wire connection part 33 to which a wire 34 is connected is provided on a lower surface of the electrical component block 8 in the upper stage. In a terminal of the wire 34, a connector 36 is provided. On an upper surface of an electrical component block 12 just below the electrical component block 8 in the upper stage, an attachment part 40 to which an electrical component is attached and a connector connection part 41 to which the connector is connected are provided.

Description

  The present invention relates to an electrical junction box attached to an engine room of an automobile.

  A variety of electronic devices are mounted on automobiles. In order to supply power to these various electronic devices, automobiles have an electrical connection in which electrical components such as fuses and relays are integrated at appropriate locations between a power source such as a battery and the electronic device. A box is installed.

  The electrical junction box is also called a junction block, a fuse block, or a relay box. In the present specification, the junction block, fuse block, and relay box described above are collectively referred to as an electrical junction box.

  The electrical junction box includes a box body, an electrical component block that is attached to the box body and to which electrical components are mounted, and a power distribution block that is attached to the box body and distributes the power of the power source.

  Such an electrical junction box is attached to an engine room or the like in which various devices such as an engine, an alternator, and a battery are mounted. For this reason, a space in a horizontal direction such as an engine room is limited, and an electric junction box that can be mounted in the limited space is required.

  From the above requirements, an electrical junction box that reduces the vertical projection area has been proposed (see, for example, Patent Document 1). The electrical junction box shown in Patent Document 1 includes an electrical component block on which electrical components are mounted, a power distribution block that distributes power from a power source, and the electrical component block mounted in two stages in the vertical direction. And a box body to which the power distribution block is attached. Since the electric component block is attached in two stages in the vertical direction (vertical direction), the horizontal dimension can be suppressed.

JP 2011-10514 A

  However, the conventional electrical junction box shown in Patent Document 1 described above assembles the upper electrical component block and the lower electrical component block, which are connected to each other by electric wires, into the box body almost simultaneously. There was a problem that was not good.

  In addition, there is a problem that the structure of the box body is complicated because an electric wire passage is required to route the electric wire to the upper electric component block from the lower side to the upper side.

  The present invention aims to solve this problem. That is, an object of the present invention is to provide a small electrical junction box that has good workability for assembling an electric component block to a box body and that has a simple structure of the box body.

  In order to solve the above-mentioned problems and achieve the object, the invention described in claim 1 is a box body formed in a frame shape with outer walls that are continuous with each other, and is mounted in multiple stages in the vertical direction of the box body. An electrical junction box comprising an electrical component block on which a component is mounted and a power distribution block that is attached to the box body and distributes power from a power source. The upper electrical component block includes the upper electrical component block. A mounting portion for mounting an electrical component is provided on the upper surface of the block, and a wire connecting portion for connecting an electric wire is provided on the lower surface of the upper electrical component block, and a connector is provided at the end of the electric wire. In addition, on the upper surface of the electrical component block immediately below the upper electrical component block, a mounting portion to which the electrical component is mounted and a connector connection to which the connector is connected. And parts, an electrical connection box, characterized in that is provided.

  According to a second aspect of the present invention, the box body is provided with an extension wall formed by extending the outer wall upward, and the upper electrical component block is attached to the extension wall. The electrical connection box according to claim 1, wherein an attachment portion is provided.

  According to a third aspect of the present invention, in the electrical junction box according to the first or second aspect, the connector connecting portion is provided at a position that does not overlap the upper electrical component block. is there.

  According to a fourth aspect of the present invention, the mounting portion includes a guide portion that guides the upper electrical component block, and an engagement portion that engages with the upper electrical component block. The electrical junction box according to any one of claims 1 to 3.

  According to the first aspect of the present invention, the electrical junction box is provided with the wire connection portion for connecting the wire provided with the connector at the terminal on the lower surface of the upper electrical component block, and the upper electrical component block. Since the connector connecting portion to which the connector is connected is provided on the upper surface of the electrical component block immediately below, the connector of the upper electrical component block is connected to the connector after the electrical component block directly below is assembled to the box body. It can be connected to the part and assembled. For this reason, workability | operativity of the assembly | attachment operation | work which assembles | assembles an electrical component block to a box main body becomes favorable.

  In addition, the electrical junction box is provided with a wire connecting portion for connecting a wire provided with a connector at the terminal on the lower surface of the upper electrical component block, and on the upper surface of the electrical component block immediately below the upper electrical component block, Since the connector connecting portion to which the connector is connected is provided, the connection of the electric wire is completed simply by connecting the electric wire connector of the upper electric component block to the connector connecting portion of the electric component block immediately below. For this reason, the electric wire channel | path for routing an electric wire becomes unnecessary, and the structure of a box main body can be simplified.

  According to the second aspect of the present invention, the electrical junction box is provided with the extension wall by extending the outer wall of the box body upward, and the extension wall is provided with the mounting portion to which the upper electrical component block is attached. The extension wall to which the upper electric component block is attached can be miniaturized. For this reason, the electrical junction box can be further downsized.

  According to the third aspect of the present invention, since the electrical connection box is provided with the connector connection portion at a position that does not overlap the upper electrical component block, the access to the connector connection portion is facilitated. For this reason, the workability | operativity of the operation | work which connects a connector to a connector connection part improves.

  In the electrical junction box, the connector connecting portion is provided at a position that does not overlap with the upper electrical component block. Can be prevented.

  According to the fourth aspect of the present invention, the electrical junction box includes the guide portion that guides the upper electrical component block and the engaging portion that engages the upper electrical component block. Therefore, when the upper electrical component block is attached to the attachment portion, the upper electrical component block is smoothly attached to the attachment portion, and the upper electrical component block is engaged and fixed to the attachment portion. The For this reason, it is possible to easily attach the upper electrical component block by a simple operation.

It is an exploded view of the electrical junction box concerning one embodiment of the present invention. It is a top view for demonstrating the structure of the box main body of an electrical-connection box. It is a perspective view which shows the state which assembles | attaches an upper stage electrical component block to a box main body.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3.

  As shown in FIG. 1, an electrical junction box 1 according to an embodiment of the present invention includes a box body 2, an upper cover 4 attached to the upper surface of the box body 2, and a side attached to a side surface of the box body 2. A cover 5 and a lower cover 6 attached to the lower surface of the box body 2 are provided.

  In addition, the arrow X in FIG. 1 thru | or FIG. 3 has shown the direction parallel to a horizontal direction, and has shown the transversal direction of the box main body 2, The arrow Y has shown the direction parallel to a horizontal direction. In addition, the longitudinal direction of the box body 2 is shown, and the arrow Z indicates the direction parallel to the vertical direction and the vertical direction of the box body 2. Further, the upper side in the paper direction in the arrow Z direction is expressed as “up”, and the lower side in the paper direction in the arrow Z direction is expressed as “lower”.

  The box body 2 includes a main body 3 formed in a frame shape, a power distribution block 10 that distributes power from a power source such as a battery, an upper electrical component block 8, and an electrical component directly below the upper electrical component block 8. And a component block 12. On the box body 2, the upper electric component block 8 and the immediately lower electric component block 12 are attached in two stages in the vertical direction Z.

  The main body 3 is formed of an insulating resin and is formed by a known injection molding. The main body 3 is formed in a frame shape with outer walls that are continuous with each other. The main body 3 includes an attachment portion (not shown) of the power distribution block 10, an extension wall 44 (shown in FIG. 3) that is formed by extending the outer wall upward and to which the upper electrical component block 8 is attached, An engaging portion 63 engaged with the upper cover 4, an engaging protrusion 62 engaged with the side cover 5, and an engaging portion 61 engaged with the lower cover 6 are provided.

  The attachment portion is provided on the inner peripheral surface of the outer wall of the main body portion 3 and is formed so as to be engaged with and fixed to an engagement portion (not shown) provided in the power distribution block 10.

  As shown in FIG. 3, the extension wall 44 is provided at the upper end of the corner portion of the main body 3, and the outer wall formed in a rectangular shape along the outer shape of the electric component block 12 directly below is provided on the outer wall. The upper electrical component block 8 extends upward from the upper end along the two side surfaces and is formed in a substantially L-shaped cross section. For this reason, the extension wall 44 is significantly reduced in size with respect to the main body 3. The extension wall 44 is provided with a mounting portion 45 of the upper electrical component block 8.

  The attachment portions 45 are provided on an inner wall surface parallel to the longitudinal direction Y of the extension wall 44 and an inner wall surface parallel to the lateral direction X of the extension wall 44, respectively. A plurality (two in the illustrated example) of mounting portions 45 are provided at equal intervals on the inner wall surface of the extension wall 44 parallel to the longitudinal direction Y. One attachment portion 45 is provided on the inner wall surface of the extension wall 44 parallel to the short direction X. The attachment portion 45 includes a pair of guide portions 46 that are parallel to the vertical direction Z, and an engagement portion 47 that is provided in the pair of guide portions 46.

  The pair of guide portions 46 are formed so as to protrude from the inner wall surface of the extension wall 44, extend in parallel with the up-down direction Z, and bend in the direction in which the tip portions face each other. For this reason, the upper electrical component block 8 can be easily attached to the attachment portion 45 of the extension wall 44 by a slide operation.

  The engaging portion 47 protrudes from the inner wall surface of the extension wall 44 and is formed in a substantially triangular shape in cross section in which the protruding amount gradually decreases in the vertical direction Z. Therefore, the upper electrical component block 8 attached to the attachment portion 45 can be reliably fixed to the extension wall 44.

  As shown in FIGS. 1 and 2, the power distribution block 10 receives the power input from the block main body 11, a power input terminal 65 to which a terminal of a power cable terminal (not shown) is attached, and the power input terminal 65. And a bus bar for distribution.

  The block main body 11 is formed of an insulating resin and is formed by a known injection molding. The block main body 11 includes a mounting portion 67 on which fuses and relays as electrical components are mounted, an electric connection portion provided on the lower surface of the block main body 11 and connected to an electric wire and a wire harness (not shown), and the main body And an engagement portion that is engaged with the attachment portion of the portion 3.

  The mounting portion 67 is formed with a plurality of concave portions along the outer shape of each electrical component so that the electrical component to be mounted is inserted and accommodated. The mounting portion 67 is provided with an electrical contact portion formed in the terminal shape of the bus bar.

  The electrical connection portion is provided on the lower surface of the block main body portion 11. The electrical connection section is provided at a connector provided at a terminal of a wire harness that supplies power to various electronic devices mounted on a vehicle such as an automobile, and at a terminal of an electric wire connected to the electrical component block 12 directly below. And the terminal fitting provided at the end of the electric wire connected to the connector connecting portion 41 (shown in FIG. 3), which will be described later, of the electrical component block 12 directly below, are fitted into the bus bar. It is formed so that it may be connected. The electrical connection portion is provided with an electrical contact portion formed in a terminal shape of the bus bar.

  The power input terminal 65 includes a bolt terminal that is inserted into a flat washer-like terminal provided at a terminal of a power cable such as a battery, and a nut that is screwed to the bolt terminal to fix the terminal. The power input terminal 65 is electrically connected to the bus bar.

  The bus bar is formed of a conductive sheet metal. The bus bar is electrically connected to the power input terminal 65. The bus bar is formed in a shape that distributes the power input from the power input terminal 65 to the mounting portion 67 and the electrical connection portion according to a predetermined pattern. The bus bar is formed by known punching and pressing.

  As shown in FIG. 3, the upper electrical component block 8 includes a mounting portion 32 to which a relay 18 as an electrical component is mounted, a relay 18 as an electrical component to be mounted on the mounting portion 32, and a terminal of an electric wire 34. An electrical connection portion 33 into which a terminal fitting provided in the housing is inserted, a sliding portion (not shown) slidably formed on the pair of guide portions 46 of the mounting portion 45, and the pair of guide portions 46. And an engaging recess (not shown) that engages with the engaging portion 47. The upper electrical component block 8 is formed of an insulating resin and is formed by a well-known injection molding.

  The mounting portion 32 is provided on the upper surface of the upper electrical component block 8. The mounting portion 32 is provided with a fitting hole into which the terminal portion of the relay 18 to be fitted is fitted. The terminal fitting of the terminal of the said electric wire 34 inserted in the electrical connection part 33 is distribute | arranged to the insertion hole.

  The relays 18 are provided in two rows at equal intervals in the longitudinal direction Y of the mounting portion 32. The relays 18 are provided at intervals that can dissipate heat.

  The electrical connection portion 33 is provided on the lower surface of the upper electrical component block 8. The electrical connection portion 33 is formed so that a terminal fitting provided at the end of the electric wire 34 can be fitted therein. For this reason, the terminal fitting fitted in the electrical connection portion 33 is electrically connected to the terminal portion of the relay 18 attached to the attachment portion 32.

  The electric wire 34 includes a conductive core wire and an insulating covering portion. The core wire is formed by twisting a plurality of conductive wires. The conducting wire is made of a conductive metal. The covering portion covers the core wire and is formed of an insulating resin. In addition, a core wire may be comprised from one conducting wire.

  One terminal of the electric wire 34 is provided with a terminal fitting that is fitted into the electric wire connecting portion 33 of the upper electric component block 8. The other end of the electric wire 34 is provided with a connector 36 formed so as to be connectable to a connector connecting portion 41 described later of the electrical component block 12 directly below.

  The connector 36 is a so-called male connector. The connector 36 includes a so-called female terminal fitting provided with a crimping piece for crimping the core wire of the electric wire 34 and a fitting portion for fitting with the terminal fitting of the connector connecting portion 41.

  The sliding portion is formed to be slidable on the pair of guide portions 46 of the mounting portion 45. The sliding portion protrudes from the side surface of the upper electrical component block 8, extends in parallel with the up-down direction Z, and is formed by bending the tip portions away from each other.

  The engaging recess is formed to be able to engage with the pair of guide portions 46. The engaging recess is formed by providing a substantially square hole on the side surface of the upper electrical component block 8.

  The electrical component block 12 directly below is formed integrally with the box body 3. The electrical component block 12 directly below includes a relay unit 7 provided with a plurality of relays as electrical components, relays 16 and 17 as electrical components, and a mounting portion to which the relay unit 7 and the relays 16 and 17 are mounted. 40, a connector connecting portion 41 provided in the mounting portion 40, and an electric connecting portion into which a terminal fitting of an electric wire connected to the block main body portion 11 of the power distribution block 10 is inserted. The electrical component block 12 directly below may be a block formed separately from the box body 3 and may be formed so as to be assembled to the box body 3.

  The relay unit 7 is formed of an insulating synthetic resin. The relay unit 7 is formed in a rectangular parallelepiped box shape. On the upper surface of the relay unit 7, a fuse mounting portion 13 to which a fuse (not shown) as an electrical component is mounted is provided. The lower surface of the relay unit 7 is provided with a connector fitting portion into which a connector provided at an end of an electric wire connected to the block main body portion 11 of the power distribution block 10 is fitted.

  In the relay unit 7, a bus bar or a printed circuit board constituting a circuit is provided.

  A plurality of (four in the illustrated example) fuse mounting portions 13 are provided at equal intervals along the longitudinal direction Y. The fuse mounting portion 13 is arranged so that the bus bar or the printed circuit board constituting the circuit is electrically connected to the fuse when the fuse is mounted on the fuse mounting portion 13.

  When the connector of the electric wire connected to the block main body 11 of the power distribution block 10 is fitted to the connector fitting portion, the bus bar or the printed circuit board constituting the circuit is connected to the connector fitting portion. It is arranged to be electrically connected to the connector.

  The bus bar or the printed circuit board, which is provided in the relay unit 7 and constitutes a circuit, is fitted to the plurality of relays, the relay attached to the fuse attachment portion 13, and the connector fitting portion. The connector is electrically connected according to a predetermined pattern.

  The relays 16 and 17 are provided in the mounting portion 40 on the upper surface of the electrical component block 12 directly below. The relays 16 and 17 are provided at intervals that can dissipate heat. The relay 16 is provided at the corner of the main body 3. The relays 17 are provided in two rows at equal intervals in the longitudinal direction Y.

  The mounting portion 40 is provided on the upper surface of the electrical component block 12 immediately below. The mounting part 40 includes a mounting hole into which the relay unit 7 to be mounted is fitted, and a fitting part into which the relays 16 and 17 are fitted. The mounting hole is formed in a rectangular shape along the outer shape of the relay unit 7. The fitting portion is formed along the outer shape of the terminal portion of the relays 16 and 17 so that the terminal portion is fitted.

  The connector connecting portion 41 is formed as a so-called female connector. The connector connecting portion 41 is provided with a male terminal fitting electrically connected to the female terminal fitting of the connector 36. The male terminal fitting is connected to an end of an electric wire connected to the block main body 11 of the power distribution block 10.

  As shown in FIG. 2, the connector connecting portion 41 is provided so as not to overlap the upper electrical component block 8 when the upper electrical component block 8 is attached to the extension wall 44. For this reason, access to the connector connecting portion 41 is facilitated, and workability when the connector 36 is connected to the connector connecting portion 41 is improved.

  The electrical connection portion is provided on the lower surface of the electrical component block 12 directly below. The electrical connection portion is formed so that a terminal fitting of an end of an electric wire connected to the block main body portion 11 of the power distribution block 10 can be inserted. For this reason, the terminal metal fitting inserted in the electrical connection portion is electrically connected to the terminal portions of the relays 16 and 17 attached to the attachment portion 40.

  The upper cover 4 is formed of an insulating resin and is formed by a known injection molding. As shown in FIG. 1, the upper cover 4 includes a plurality of outer walls that are continuous with each other, and is formed in a bottomed frame shape with an upper portion closed. The upper cover 4 is provided with a lever 52 that is engaged with the engaging portion 63 of the main body portion 3 and can be disengaged. The upper cover 4 is attached to the main body 3 so as to cover the upper surface of the main body 3.

  The side cover 5 is formed of an insulating resin and is formed by a well-known injection molding. The side cover 5 includes a plurality of outer walls that are continuous with each other, and one side surface is opened. The side cover 5 is provided with an engaging portion 55 to which the engaging protrusion 62 of the main body portion 3 is engaged. The side cover 5 is attached to the main body 3 while covering the side surface of the main body 3.

  The lower cover 6 is formed of an insulating resin and is formed by a well-known injection molding. The lower cover 6 includes a plurality of outer walls that are continuous with each other, and is formed in a bottomed frame shape with a lower portion closed. The lower cover 6 is provided with an engaging protrusion 58 that is engaged with the engaging portion 61 of the main body portion 3. The lower cover 6 is attached to the main body 3 while covering the lower surface of the main body 3.

  The electrical junction box 1 configured as described above supplies power to the electrical component block 12 directly below, the electrical component block 8 in the upper stage, and various electrical devices according to a predetermined pattern of the power distribution block 10. To do.

  In addition, as shown in FIG. 3, the electrical connection box 1 is provided with a connector connection portion 41 to which the connector 36 of the electric wire 34 of the upper electrical component block 8 is connected to the mounting portion 40 of the electrical component block 12 directly below. Therefore, the upper electrical component block 8 can be attached to the extension wall 44 after the relays 16 and 17 are mounted on the mounting portion 40 of the electrical component block 12 directly below. Therefore, the workability of the assembling work for assembling the electric component and the electric component block to the box body 2 is improved.

  According to this embodiment, the electrical junction box 1 is mounted in a plurality of stages in the vertical direction Z of the box body 2 and the box body 2 formed in a frame shape with the outer walls that are continuous with each other. And a power distribution block 10 that is attached to the box body and distributes power from the power source. The upper electrical component block 8 includes an electrical component on the upper surface of the upper electrical component block 8. Is attached to the lower surface of the upper electrical component block 8, and a connector 36 is provided at the end of the electric wire 34. In addition, on the upper surface of the electrical component block 12 directly below the upper electrical component block 8, a mounting portion 40 to which electrical components are mounted and a connector to which the connector 36 is connected are connected. A data connection part 41, is provided.

  For this reason, the electrical junction box 1 is provided with a wire connecting portion 33 for connecting the electrical wire 34 provided with the connector 36 at the terminal on the lower surface of the upper electrical component block 8, and directly below the upper electrical component block 8. Since the connector connection portion 41 to which the connector 36 is connected is provided on the upper surface of the electrical component block 12, the assembly of the electrical component block 12 directly below the box body 2 is followed by the above-described electrical component block 8 in the upper stage. The connector 36 can be connected to the connector connecting portion 41 and assembled. Therefore, the workability of the assembling work for assembling the electric component blocks 8 and 12 to the box body 2 is improved.

  Further, the electrical junction box 1 is provided with a wire connection portion 33 for connecting a wire 34 having a connector 36 provided at a terminal on the lower surface of the upper electrical component block 8, and the electrical connection box 1 is directly under the electrical component block 8. Since the connector connecting portion 41 to which the connector 36 is connected is provided on the upper surface of the component block 12, only the connector 36 of the electric wire 34 of the upper electric component block 8 is connected to the connector connecting portion 41 of the electric component block 12 directly below. Thus, the connection of the electric wire 34 is completed. For this reason, the electric wire channel | path for routing the electric wire 34 becomes unnecessary, and the structure of the box main body 2 can be simplified.

  Further, according to the present embodiment, the electrical connection box 1 includes the box body 2 provided with the extension wall 44 formed by extending the outer wall upward, and the extension wall 44 includes the extension wall 44. A mounting portion 45 to which the upper electrical component block 8 is mounted is provided.

  For this reason, the electrical junction box 1 is provided with an extension wall 44 by extending the outer wall of the box body 2 upward, and the extension wall 44 is provided with a mounting portion 45 to which the upper electrical component block 8 is attached. The extension wall 44 to which the upper electrical component block 8 is attached can be reduced in size. Therefore, the electrical junction box 1 can be further downsized.

  Further, according to the present embodiment, the electrical connection box 1 is provided at a position where the connector connection portion 41 does not overlap the electrical component block 8 on the upper stage, so that the access to the connector connection portion 41 is easy. Become. Therefore, the workability of the work of connecting the connector 36 to the connector connecting portion 41 is improved.

  In the electrical junction box 1, the connector connecting portion 41 is provided at a position where it does not overlap the upper electrical component block 8, so that the connector 36 is connected to the upper electrical component block 8 and the electrical component block 12 directly below. Can be prevented from bending the electric wire 34.

  Further, according to the present embodiment, the electrical junction box 1 includes the mounting portion 45 that guides the upper electrical component block 8 and the engaging portion that engages with the upper electrical component block 8. 47, when the upper electrical component block 8 is attached to the attachment portion 45, the upper electrical component block 8 is smoothly attached to the attachment portion 45, and the upper portion of the electrical component block 8 is attached to the attachment portion 45. The electric component block 8 is engaged and fixed. Therefore, the upper electrical component block 8 can be easily attached by a simple operation.

  In the embodiment that has been achieved, the electrical junction box in which the electrical component blocks are arranged in two stages up and down has been described. However, the upper electrical component block 8 is provided with the electric wire 34 including the connector 36 and the electrical component directly below. Since the connector connecting portion 41 to which the connector 36 is connected is provided on the mounting portion 40 of the block 12, the electric component block is moved up and down in addition to the upper electric component block 8 and the electric component block 12 directly below. A plurality of stages may be provided in the direction Z.

  In addition, the electrical component block is a block in which the electrical component is mounted, a unit in which the electrical component is accommodated, a complex thereof, or a block formed by combining a plurality of blocks. There may be.

  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 main body 8 Upper stage electric component block 10 Power distribution block 12 Directly below electric component block 31 Block main body part 32 Mounting part 33 Electric wire connection part 34 Electric wire 36 Connector 40 Mounting part 41 Connector connection part 44 Extension wall 45 Installation Part 46 A pair of guide parts 47 Engagement part X Short direction Y Longitudinal direction Z Vertical direction

Claims (4)

A box body formed in a frame shape with outer walls that are connected to each other, an electric component block that is mounted in a plurality of stages in the vertical direction of the box body and mounted with an electrical component, In an electrical junction box comprising a power distribution block for distributing,
The upper electrical component block is provided with a mounting portion for mounting an electrical component on the upper surface of the upper electrical component block, and an electric wire connecting portion for connecting an electric wire to the lower surface of the upper electrical component block. Provided,
A connector is provided at the end of the electric wire, and
An electrical connection characterized in that a mounting portion to which an electrical component is mounted and a connector connection portion to which the connector is connected are provided on the upper surface of the electrical component block immediately below the upper electrical component block. box. The box body is provided with an extension wall formed by extending the outer wall upward, and
The electrical connection box according to claim 1, wherein the extension wall is provided with an attachment portion to which the upper electrical component block is attached.   The electrical connection box according to claim 1, wherein the connector connecting portion is provided at a position that does not overlap with the upper electrical component block.   The said attachment part is provided with the guide part which guides the said electrical component block of the said upper stage, and the engaging part engaged with the said electrical component block of the said upper stage, The Claim 1 thru | or 3 characterized by the above-mentioned. The electrical junction box according to any one of the above.

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