JP2008010346A - Electric junction box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an art which can inexpensively achieve a direct attachment of electric junction box. <P>SOLUTION: The electric junction box includes a terminal which has a fuse connection provided at one end thereof; and has a first electric wire connection, a second electric wire connection, and a distributor to shift the position of the electric wires in these connections at the other end thereof. Further, the box has a plurality of electric wires which are respectively connected electrically to the connections of the terminal. The electric junction box distributes power source at the downstream of the fuse by means of the terminals and the wires. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electrical junction box such as an automobile junction box.

Conventionally, as wiring media for electrical distribution boxes for automobiles, copper-based materials are punched and bent, etc., using busbars, electric wires and pressure contact terminals, and printed circuit boards are used for power distribution and joint absorption of automobiles. Something to do is provided.
Conventionally, for example, technologies disclosed in Patent Documents 1 to 6 have been proposed for electrical junction boxes such as automobile junction boxes.

In Patent Document 1, a plurality of divided wiring boards are arranged vertically and stacked in the thickness direction, and the divided wiring board has a plurality of vertical bus bars, and the bus bars are connected to external terminals on one side. On the other hand, there are disclosed a divided wiring block having a terminal for connecting a power circuit and connecting intermediate portions of a required bus bar to each other by a horizontal distribution circuit, and an electric junction box using the same.
In Patent Document 2, a plurality of bus bars are juxtaposed, and a bus bar insulating substrate having a plurality of terminal holding openings formed at predetermined intervals along one side edge in the longitudinal direction of each bus bar; A pressure contact terminal member mounted in the terminal holding opening and electrically connected to the bus bar; a plurality of wires connected to a tip pressure contact blade of the pressure contact terminal member penetrating the terminal holding opening; and arranging the wires. A branch box including an insulating substrate for holding an electric wire that can be fixed and upper and lower cases covering these is disclosed.
Patent Document 3 includes an insulating substrate made of a synthetic resin material, a plurality of press contact terminals held on the base wall, and an electric wire that connects the terminals to each other and is wired on the insulating substrate. A wiring board in which a hole for embedding an end portion of an electric wire press-contacted to a press-contact terminal is formed in a base wall and the hole diameter is formed to be smaller than the electric wire, and an electric connection box using the wiring board are disclosed. .
In Patent Document 4, an insulating groove is provided between both leg portions that are fitted to the outer periphery of the insulation coating without tearing the insulation coating of the electric wire, and the legs are arranged on the inner surface of the case or inside the case. Supporting and attaching to the plate, projecting a plurality of other parts to the opposite side of the leg, connecting the plurality of tabs to the external circuit, connecting to the external circuit without going through the wires of the internal circuit, A terminal is disclosed in which an external circuit can be connected without using an electric wire of the internal circuit.
In Patent Document 5, an electric connection box is manufactured by punching a single conductive plate into a required shape, bending the wire, and arranging the bus bar on the side surfaces of the lower case and the upper case. An electrical junction box is disclosed which comprises an internal circuit by press-contacting with wires wired respectively along the inner surface.
Patent Document 6 includes a plurality of rows of wire connection blocks in which X-shaped strip-shaped vertical bus bars are arranged in parallel, and a plurality of external wire terminal connection cavities are arranged in parallel in the Y direction on the outer surface of the case. A vertical bus bar and a cavity are formed in a grid in the X-Y direction, and a vertical bus bar and an electric wire are connected at a required crossing position to form a circuit, while a plurality of vertical bus bars arranged in parallel using chained terminals and short pins A joint junction box is disclosed.
Japanese Patent Laid-Open No. 2001-186631 JP 2001-186634 A JP 2005-86909 A JP-A-8-130040 JP 2000-188141 A Japanese Patent Laid-Open No. 2003-87943

The electrical junction box for automobiles is designed based on a power supply system diagram as shown in FIG. In general, the electrical connection box is of a type (hereinafter referred to as a direct attachment type) in which an electric wire is directly fitted into a housing. FIG. 2 is a diagram exemplifying the directly attached type electric junction box. In the figure, reference numeral 1 denotes an electrical junction box, 2 denotes a housing, and 3 denotes an electric wire.
In the actual power supply system, as shown in FIG. 3, it is necessary to distribute power on the downstream side of the fuse. However, in the case of the direct mounting type, since it is difficult to distribute power on the downstream side of the fuse, in FIG. As indicated by reference numeral 4, a method of simultaneously crimping two electric wires 3 (hereinafter referred to as W crimping) has been used.

  However, since it is difficult to automate this W-compression, there is a problem that processing costs are very high because an electric junction box having W-compression must be relied on manually. Furthermore, since W crimping cannot be performed when another branch is added, another connection medium such as a joint connector must be used. In this case as well, there is a problem that an increase in cost cannot be avoided.

  This invention is made | formed in view of the said situation, and aims at provision of the technique which can provide a direct attachment type electric junction box at low cost.

  In order to achieve the above object, the present invention provides a fuse connecting portion provided on one end side, and a first electric wire connecting portion, a second electric wire connecting portion, and an electric wire position of these connecting portions on the other end side. An electric connection box is provided, wherein power distribution is performed on the downstream side of the fuse by a terminal provided with a portion and a plurality of electric wires electrically connected to each connection portion of the terminal.

  In the electrical junction box of the present invention, it is preferable that the fuse connection portion has an opposing spring piece.

  In the electrical junction box of the present invention, the fuse connection part is preferably formed by bending two spring pieces so as to face each other.

  In the electrical junction box of the present invention, the fuse connection portion may have a structure having a tuning fork-like connection portion.

  In the electric junction box of the present invention, it is preferable that an electric wire is connected to the electric wire connecting portion by crimping.

  The electric junction box of the present invention may have a configuration in which an electric wire is connected to the electric wire connecting portion by pressure welding.

  The electric junction box of the present invention may have a configuration in which an electric wire is connected to the electric wire connecting portion by resistance welding.

The electric junction box of the present invention may have a configuration in which an electric wire is connected to the electric wire connecting portion by ultrasonic welding.
Moreover, it is good also as a structure by which the electric wire was connected to the said electric wire connection part by laser welding.
Furthermore, it is good also as a structure by which the electric wire was connected to the said electric wire connection part by soldering.

  In the electric junction box of the present invention, one or more electric wire connecting portions may be connected to the tip of the second electric wire connecting portion via a distribution portion.

  According to the electric junction box of the present invention, the power distribution function of the direct attachment type electric junction box can be realized at low cost, and the total cost of materials and processing can be reduced.

Hereinafter, an embodiment of an electrical junction box of the present invention will be described with reference to the drawings.
FIG. 5: shows 1st Embodiment of the electrical junction box of this invention, (a) is a perspective view which shows the state before the electric wire connection of the terminal 10 used for an electric junction box, (b) is the terminal after an electric wire connection. FIG. Note that the terminal shown in FIG. 5 is one of the main components of the electrical junction box of the present invention, and the electrical junction box is placed in any part of the casing (not shown) in FIG. The terminal 10 shown is attached and comprised.

  The electrical junction box of the present embodiment is provided with a fuse connecting portion 11 on one end side, and a first wire crimping portion 12 and a first covering crimping portion 13 serving as a first wire connecting portion on the other end side, and a distribution portion. 14, a terminal 10 in which a second wire crimping portion 15 and a second covering crimping portion 16 serving as a second wire connecting portion are sequentially provided toward the distal end side, and each connecting portion of the terminal 10 Two electric wires 17 and 18 that are electrically connected are provided, and the terminal 10 and the electric wires 17 and 18 are used to distribute power on the downstream side of the fuse.

  This terminal 10 is formed by punching a metal plate with good conductivity such as a heat-resistant copper alloy or brass into a predetermined shape, and performing a bending process or the like as necessary to form a fuse connecting portion 11 or a fixing structure on the other end side. Have been made.

The fuse connecting portion 11 of the terminal 10 has a structure in which opposed spring pieces are arranged at the tip of the box-shaped structure portion. By pressing the plate-like connecting terminal on the fuse side between the spring pieces, The connection terminal on the fuse side and the spring piece are press-connected.
The fuse connecting portion 11 may be manufactured by fixing a spring piece separate from the terminal 10 to the tip of the box-shaped structure portion, or by forming two protruding portions that become spring pieces when the terminal 10 is manufactured. Alternatively, when the fuse connection portion 11 is formed, these protruding pieces may be bent so that the two spring pieces face each other.

  The first and second wire crimping portions 12 and 15 and the first and second covering crimping portions 13 and 16 provided on the other end side of the terminal 10 are respectively the other end side main body portion extending in a substantially S shape. It has the structure which extended the plate-shaped piece on both sides. The first and second electric wire crimping portions 12 and 15 are electrically connected to the conductor portion by covering both the plate-like pieces on the outer periphery of the exposed conductor portion by covering and removing the tip portions of the electric wires 17 and 18 and crushing them. Can be connected to. Moreover, the 1st, 2nd coating crimping | compression-bonding parts 13 and 16 are crimping | bonding the coating part of the electric wires 17 and 18 by covering both the plate-shaped pieces on the outer periphery of the coating | cover near the conductor part of the electric wires 17 and 18, and crushing. It can be done. And as shown in FIG.5 (b), while conductor part of each electric wire 17 and 18 is crimped | bonded by the 1st, 2nd wire crimping part 12,15, the covering part of the vicinity of the conductor part is made into 1st, 1st. By crimping with the second covering crimping portions 13 and 16, the electric wires 17 and 18 can be held in a stable state and electrically connected to the terminal 10 side.

  The other end side main body portion of the terminal 10 is formed in a substantially S shape by a distribution portion 14 provided between the first covering crimping portion 13 and the second wire crimping portion 15. The distribution unit 14 includes a first electric wire connecting portion (the first electric wire crimping portion 12 and the first covering crimping portion 13) and a second electric wire connecting portion (the second electric wire crimping portion 15 and the second covering crimping portion). It is provided to shift the positions of the electric wires 17 and 18 so that the electric wires 17 and 18 respectively connected to the section 16) do not overlap.

  The power supply connection box of the present embodiment includes the above-described terminal 10 and two electric wires 17 and 18 electrically connected to the respective connection portions, and the fuse 10 is connected to the downstream side of the fuse by the terminal 10 and the electric wires 17 and 18. Therefore, the power distribution function of the directly attached type electric junction box can be realized at low cost, and the total cost of materials and processing can be reduced.

  FIG. 6: is a perspective view which shows the state before the electric wire connection of the terminal used for 2nd Embodiment of the electrical junction box of this invention. Note that the terminal shown in FIG. 6 is one of the main components of the electrical junction box of the present invention, and the electrical junction box is connected to this terminal 20 and it at any part in the casing (not shown). It is configured with attached electric wires.

  The electrical junction box of the present embodiment is provided with a tuning fork-shaped flat plate-shaped fuse connection portion 21 on one end side, and a first wire crimping portion 22 and a first covering that serve as a first wire connection portion on the other end side. A terminal 20 in which a crimping portion 23, a distribution portion 24, a second wire crimping portion 25 that serves as a second wire connecting portion, and a second covering crimping portion 26 are provided in this order toward the distal end side, and the terminal 20 These electric wires are electrically connected to each of the electric wire connecting portions, and the terminal 20 and the electric wires are used for power distribution on the downstream side of the fuse.

  A first electric wire connecting portion (first electric wire crimping portion 22 and first covering crimping portion 23), a distributing portion 24 and a second electric wire connecting portion (second electric wire) provided on the other end side of the terminal 20 The structures of the crimping part 25 and the second covering crimping part 26) are the first electric wire connecting part, the distributing part 24 and the second electric wire connecting part provided on the other end side of the terminal 10 in the first embodiment described above. It can be configured in the same manner.

Since the terminal 20 is configured to perform power distribution on the downstream side of the fuse by the terminal 20 and the electric wire, similarly to the terminal 10 in the first embodiment described above, the power distribution function of the direct attachment type electric junction box is inexpensive. It is possible to realize the cost reduction in total material cost and processing cost.
In addition, since the fuse connection portion 21 has a tuning fork-like flat plate shape, the connection structure on the fuse side can be simplified, and the fuse connection portion 21 can be formed thin and small, thereby reducing the size and cost of the electrical connection box. Can be planned.

The electrical junction box of the present invention is not limited to the above-described embodiment, and various modifications and changes can be made.
For example, one or more electric wire connection parts can be connected to the tip of the second electric wire connection part via a distribution part to increase the number of downstream branches.
Moreover, the structure which connects an electric wire to an electric wire connection part is not limited to the connection structure by crimping | compression-bonding, Pressure welding, resistance welding, ultrasonic welding, laser welding, and soldering may be sufficient.

It is a figure which illustrates the power supply system of the electrical junction box for motor vehicles. It is a perspective view which illustrates the conventional direct attachment type electric junction box. It is a block diagram which illustrates the power distribution of the fuse downstream in the electrical junction box for motor vehicles. It is a perspective view which illustrates the electrical junction box which has W crimping | compression-bonding. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a first embodiment of an electrical junction box according to the present invention, in which (a) is a perspective view showing a state of a terminal used in the electrical junction box before electrical connection, and (b) is a perspective view showing a terminal after electrical connection. . It is a perspective view which shows the state before the electric wire connection of the terminal used for 2nd Embodiment of the electrical junction box of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,20 ... Terminal, 11, 21 ... Fuse connection part, 12, 22 ... 1st electric wire crimping part, 13, 23 ... 1st coating crimping part, 14, 24 ... Distribution part, 15, 25 ... 2nd Wire crimping part, 16, 26 ... second covering crimping part, 17, 18 ... electric wire.

Claims (11)

  A terminal provided with a fuse connecting portion on one end side, a first electric wire connecting portion, a second electric wire connecting portion, and a distribution portion for shifting the position of the electric wire of these connecting portions on the other end side; An electrical junction box for distributing power on the downstream side of the fuse with a plurality of electric wires electrically connected to each connection portion of the terminal.   The electrical connection box according to claim 1, wherein the fuse connecting portion has opposing spring pieces.   The electrical connection box according to claim 1, wherein the fuse connection portion is formed by bending two spring pieces so as to face each other.   The electrical connection box according to claim 1, wherein the fuse connecting portion has a tuning fork-like connecting portion.   The electric connection box according to claim 1, wherein an electric wire is connected to the electric wire connecting portion by crimping.   The electric connection box according to any one of claims 1 to 4, wherein an electric wire is connected to the electric wire connecting portion by pressure welding.   The electric connection box according to claim 1, wherein an electric wire is connected to the electric wire connecting portion by resistance welding.   The electric connection box according to claim 1, wherein an electric wire is connected to the electric wire connection portion by ultrasonic welding.   The electric connection box according to any one of claims 1 to 4, wherein an electric wire is connected to the electric wire connecting portion by laser welding.   The electric connection box according to claim 1, wherein an electric wire is connected to the electric wire connecting portion by soldering. The electrical connection box according to any one of claims 1 to 10, wherein one or more electric wire connection portions are connected to the tip of the second electric wire connection portion via a distribution portion.

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