JP6309301B2 - Electrical junction box - Google Patents

Description

  The present invention relates to an electrical junction box that is mounted on an automobile and mainly performs power distribution.

  There are various types of electrical junction boxes mounted on automobiles. For example, as in the electrical junction box disclosed in Patent Document 1, a block provided with a bus bar housing groove and the bus bar housing groove accommodate the block. The thing of the structure provided with the bus bar made is known. The two types of electrical junction boxes shown in FIGS. 6 to 9 are non-known electrical junction boxes invented by the inventors of the present application, and are accommodated in a block provided with a bus bar accommodating groove and the bus bar accommodating groove. And an electrical junction box.

  An electrical junction box 301A shown in FIG. 6 includes a synthetic resin block 302, a plurality of electronic components mounted on the upper surface side of the block 302, a plurality of electric wires and a plurality of bus bars inserted on the lower surface side of the block 302. And. Reference numeral 21 in FIG. 6 is a fuse mounting portion, and reference numeral 22 is a relay mounting portion. Reference numeral 25 denotes one of the plurality of bus bar housing grooves. Reference numeral 3 denotes a bus bar housed in the bus bar housing groove 25.

  The bus bar 3 includes a pair of power supply line connection portions 31 and 32 disposed at both ends thereof, and a plurality of fuse connection portions 33 arranged in a line between the pair of power supply line connection portions 31 and 32. ing. The power line connecting portions 31 and 32 are parts connected to power lines inserted on the lower surface side of the block 302. In the electrical connection box 301A, a power supply line is connected to one of the pair of power supply line connection portions 31 and 32. The fuse connecting portion 33 is connected to a fuse attached to the fuse attaching portion 21 on the upper surface side of the block 302. Reference numeral 34 denotes a locking hole for locking a lance provided in the block 302.

  An electrical junction box 301B shown in FIG. 8 is inserted into the same block 302 used in the electrical junction box 301A, a plurality of electronic components mounted on the upper surface side of the block 302, and the lower surface side of the block 302. A plurality of electric wires and a plurality of bus bars. Reference numerals 3 a and 3 b in FIG. 8 are bus bars housed in the bus bar housing grooves 25. These two bus bars 3a and 3b have a shape in which the bus bar 3 used in the electrical junction box 301A is divided into two at the center. In the electrical junction box 301B, the power line is connected to both the power line connecting part 31 of one bus bar 3a and the power line connecting part 32 of the other bus bar 3b. These two power lines are connected to different power sources.

JP 2013-223367 A

  In the assembly factory of the two types of electrical junction boxes 301A and 301B described above, it is necessary to determine whether the bus bar accommodated in the bus bar accommodating groove 25 is one bus bar 3 or two bus bars 3a and 3b. There is. However, as shown in FIGS. 7 and 9, when the electrical connection boxes 301A and 301B are viewed from the upper surface side of the block 302, whether the bus bar accommodated in the bus bar accommodating groove 25 is one bus bar 3 or not. It cannot be determined whether the number of bus bars 3a and 3b is one. For this reason, there is no choice but to visually discriminate from the lower surface side of the block 302. However, since there are a plurality of electric wires on the lower surface side of the block 302, it is difficult to see the inside of the bus bar housing groove 25, and it is difficult to perform the discrimination work. there were.

  Accordingly, the present invention provides an electrical junction box in which one bus bar or two bus bars each having a shape obtained by dividing one bus bar into a predetermined bus bar receiving groove is accommodated, wherein the bus bar received in the predetermined bus bar receiving groove is It is an object of the present invention to provide an electrical junction box that can easily determine whether it is one bus bar or the two bus bars.

  The invention described in claim 1 includes a block provided with a bus bar housing groove and a bus bar housed in the bus bar housing groove. One bus bar or the one bus bar is placed in a predetermined bus bar housing groove. In the electrical junction box that accommodates two bus bars having a shape divided into two, the bus bar accommodated in the predetermined bus bar accommodating groove is the one bus bar or the two bus bars. When the two bus bars are accommodated in the predetermined bus bar accommodating groove, the through hole is formed at a position that becomes a space between the end portions of the two bus bars. An electrical junction box is provided.

  According to the first aspect of the present invention, the predetermined bus bar receiving groove determines whether the bus bar received in the predetermined bus bar receiving groove is the one bus bar or the two bus bars. When the two bus bars are received in the predetermined bus bar receiving groove, the through hole is provided at a position that becomes a space between the end portions of the two bus bars. Whether the bus bar accommodated in the predetermined bus bar accommodating groove is one bus bar by checking the through hole by a worker or checking with a camera, or inserting a pin of the discriminating device into the through hole. It is possible to easily determine whether it is a bus bar.

It is a perspective view of a block and one bus bar which constitute an electric junction box concerning a 1st embodiment of the present invention. It is the perspective view which looked at the block shown by FIG. 1 from the lower surface side. It is a perspective view of the A section when one bus bar is attached to the block shown in FIG. It is a perspective view of a block and two bus bars which constitute an electric junction box concerning a 2nd embodiment of the present invention. It is a perspective view of the B section when two bus bars are attached to the block shown in FIG. It is a perspective view of the block which comprises the electrical connection box of a reference example, and one bus bar. It is a perspective view of the C section when one bus bar is attached to the block shown in FIG. It is a perspective view of the block which comprises the electrical junction box of a reference example, and two bus bars. It is a perspective view of the D section when two bus bars are attached to the block shown in FIG.

  The “electric connection box” of the present invention is mounted on an automobile and mainly performs power distribution, and includes a block provided with a bus bar housing groove and a bus bar housed in the bus bar housing groove. . In the “electric connection box” of the present invention, one bus bar or two bus bars having a shape obtained by dividing the one bus bar into two parts are accommodated in a predetermined bus bar accommodating groove. Hereinafter, an electrical connection box in which one bus bar is accommodated in a predetermined bus bar accommodating groove will be described as a first embodiment with reference to FIGS. 1 to 3, and an electrical connection in which two bus bars are accommodated in the predetermined bus bar accommodating groove will be described. A box will be described as a second embodiment with reference to FIGS.

(First embodiment)
As shown in FIG. 1, an electrical junction box 1 </ b> A according to the first embodiment of the present invention includes a synthetic resin block 2, a plurality of electronic components mounted on the upper surface side of the block 2, A plurality of electric wires and a plurality of bus bars inserted on the lower surface side, and an upper cover attached to the upper surface side of the block 2 are provided. The “upper surface” and the “lower surface” of the block 2 are names in the present specification with reference to the vertical direction in FIG. 1, and the “upper surface”, “ It does not necessarily match the “lower surface”.

  As shown in FIG. 1, a plurality of electronic component mounting portions are provided on the upper surface side of the block 2. Reference numeral 21 in FIG. 1 is a fuse mounting portion, and reference numeral 22 is a relay mounting portion. Reference numeral 4 denotes a through hole for determining the type of bus bar accommodated in a bus bar accommodating groove 25 described later.

  As shown in FIG. 2, a plurality of bus bar receiving grooves 25 to 27 and a plurality of electric wire receiving portions 23 and 24 are provided on the lower surface side of the block 2. The bus bar accommodating groove 25 corresponds to a “predetermined bus bar accommodating groove” described in the claims. As for the electric wire accommodating part 23, the edge part of the electric wire (namely, power supply line) connected with the power supply side and the connector provided in the said edge part are inserted. One electric wire receiving portion 23 is provided at each end of the bus bar receiving groove 25 and communicates with the bus bar receiving groove 25. As for the electric wire accommodating part 24, the terminal metal fitting provided in the edge part and the said edge part of an electric wire is inserted.

  The fuse mounting portion 21 communicates with the bus bar housing grooves 25 to 27 and the electric wire housing portion 24 located below the fuse mounting portion 21. The relay mounting part 22 communicates with an electric wire housing part 24 located below the relay mounting part 22.

  In this electrical junction box 1A, one bus bar 3 shown in FIG. The bus bar 3 includes a pair of power supply line connection portions 31 and 32 disposed at both ends thereof, and a plurality of fuse connection portions 33 arranged in a line between the pair of power supply line connection portions 31 and 32. Yes. Reference numeral 34 denotes a locking hole for locking a lance provided in the block 2.

  The pair of power line connecting portions 31 and 32 are respectively disposed in the pair of electric wire accommodating portions 23 described above. Each of the power line connection portions 31 and 32 is formed so as to be connectable to the power line connector described above. However, in the electrical connection box 1A, either one of the pair of power line connection portions 31 and 32 has a power line. The connector is connected and the other is not used.

  The plurality of fuse connection portions 33 are respectively disposed in the plurality of fuse mounting portions 21 located above the bus bar housing grooves 25 and connected to the fuses mounted on the fuse mounting portions 21.

  In the bus bar housing groove 25, the bus bar housed in the bus bar housing groove 25 is the bus bar 3 described above, or two bus bars 3a and 3b having a shape obtained by dividing the bus bar 3 into two (see FIG. 4). Will be described in the second embodiment). A through hole 4 is provided for determining whether or not. The through hole 4 opens on the upper surface of the block 2. Further, the through hole 4 is provided at a position that becomes a space between the end portions of the two bus bars 3a and 3b when the two bus bars 3a and 3b are accommodated in the bus bar accommodating groove 25.

  In the electrical junction box 1A having the above-described configuration, it can be easily determined from the through hole 4 that the bus bar 3 is accommodated in the bus bar accommodating groove 25 as shown in FIG. As this discrimination method, a method in which an operator visually checks the through-hole 4 from the upper surface side of the block 2 or a method using a camera, or a method of inserting a pin of the discrimination device into the through-hole 4 from the upper surface side of the block 2 Etc. can be used.

(Second Embodiment)
As shown in FIGS. 4 and 5, the electrical junction box 1B according to the second embodiment of the present invention includes the same block 2 as that used in the electrical junction box 1A of the first embodiment, A plurality of electronic components mounted on the upper surface side, a plurality of electric wires and a plurality of bus bars inserted on the lower surface side of the block 2, and an upper cover attached on the upper surface side of the block 2 are provided. 4-5, the same code | symbol is attached | subjected to the same component as 1st Embodiment mentioned above, and description is abbreviate | omitted.

  In the electrical junction box 1B, the two bus bars 3a and 3b shown in FIG. These two bus bars 3a and 3b have a shape in which the bus bar 3 used in the electrical junction box 1A of the first embodiment is divided into two at the center. More specifically, the two bus bars 3a and 3b are obtained by punching out (removing) a portion (see FIG. 3) located in the through hole 4 in the central portion of the bus bar 3. In the electrical connection box 1B, a power line connector is connected to both the power line connection part 31 of one bus bar 3a and the power line connection part 32 of the other bus bar 3b. These two power lines are connected to different power sources (for example, a battery and an alternator).

  In the electrical junction box 1B having the above configuration, it can be easily determined from the through hole 4 that the two bus bars 3a and 3b are accommodated in the bus bar accommodating groove 25 as shown in FIG. This determination method is the same as in the first embodiment. That is, in the electrical connection box 1A of the first embodiment, as shown in FIG. 3, the central portion of the bus bar 3 is located in the through hole 4, but in the electrical connection box 1B of the second embodiment, As shown in FIG. 5, there is a difference that nothing is located in the through hole 4 (the through hole 4 is provided in a position that becomes a space between the end portions of the two bus bars 3a and 3b). It can be determined that the two bus bars 3 a and 3 b are accommodated in the bus bar accommodating groove 25.

  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.

1A, 1B Electrical junction box 2 blocks 3 bus bars (one bus bar)
3a, 3b Bus bar (two bus bars)
4 Through hole 25 Bus bar receiving groove (predetermined bus bar receiving groove)

Claims (1)

A block provided with a bus bar housing groove and a bus bar housed in the bus bar housing groove, and one bus bar or two bus bars each having the one bus bar divided into two are housed in the predetermined bus bar housing groove. In the electrical junction box,
The predetermined bus bar receiving groove is provided with a through-hole for determining whether the bus bar received in the predetermined bus bar receiving groove is the one bus bar or the two bus bars,
The electrical connection box, wherein when the two bus bars are accommodated in the predetermined bus bar accommodating groove, the through hole is provided at a position that becomes a space between the end portions of the two bus bars.

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