JP2007166741A - Electrical connection box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To downsize an electric connection box by wiring an electric wire astride first and second insulating boards, and accommodating back faces having no wiring of the first and second insulating boards so as to face each other in a case. <P>SOLUTION: For an electric connection box, first and second insulation panels 1 and 2 composed of insulating materials have grooves 1a(2a) wherein electric wires 3 being wiring materials are accommodated, and engaging holes 1b(2b) with which tab terminals 4 electrically connected with external electrical parts are engaged. The electric wire 3 is laid to stride the first insulation panel 1 and the second insulation panel 2 arranged at a specified interval d. The first insulation panel 1 and the second insulation panel 2 are accommodated in a case not shown in the figure in such a way that the back faces having no wiring are made to face each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electric junction box on which a relay, a fuse, or the like of an automobile is mounted and for connecting terminals and wirings of electric parts.

  In recent years, with the increasing functionality of automobiles and the like, the number of electrical components mounted on automobiles and the like is increasing. Generally, the wire harness which is the terminal of these electrical components and wiring of an electrical component is collected for every site | part connected, and is connected to an electrical junction box.

  The electrical junction box is configured to include a circuit that electrically connects electrical components and a case that houses the circuit inside and includes a connector that engages with relays, fuses, and other electrical components on the outer surface. .

  The circuit material of the conventional electrical junction box is constituted by a bus bar obtained by punching a metal plate into an arbitrary shape and bending it, and it costs high to manufacture a die for punching the metal plate, and the degree of freedom in circuit design is low.

Then, the wiring electrical junction box which uses a flat wiring material instead of a bus bar as a circuit material and electrically connects the terminal of an electrical component and a wire harness is also proposed (patent documents 1 and 2). Thereby, cost reduction can be aimed at without the process of metal mold | die manufacturing like a bus-bar electrical junction box.
JP 2001-275229 A Japanese Patent Laid-Open No. 11-234857

  It is an object of the present invention to provide a wired electrical junction box that can reduce the size of the wired electrical junction box and further reduce the wiring space.

  The electrical junction box of the present invention has a wiring surface on which an electric wire is laid, a terminal accommodating portion is formed, and the first and second insulating substrates disposed so that the wiring surfaces face opposite sides, and the first An electric wire laid so as to straddle the first and second insulating substrates from one edge side along the wiring surfaces of the first and second insulating substrates, and terminal accommodation of the first and second insulating substrates A terminal that is mounted on the wiring surface so as to protrude toward the wiring surface side and electrically connected to the inner conductor of the electric wire, and a connector portion that faces the tip of the terminal on the outer surface. And an upper and lower case for accommodating two insulating substrates.

  According to the electrical junction box according to the present invention, the electric wire as the wiring material is wired across the first and second insulating plates, and the back surfaces of the first and second insulating plates having no wiring face each other to face the case. By storing it, it is possible to reduce the size of the electrical junction box.

  Embodiments of an electrical junction box according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is an exploded perspective view of a part of an electrical junction box according to an embodiment of the present invention.

  As shown in FIG. 1, on one side (wiring surfaces 1S, 2S) of the first and second insulation panels 1, 2 made of an insulating material such as resin, grooves 1a for accommodating the electric wires 2 at predetermined positions, 2a and locking holes 1b and 2b, which are terminal accommodating portions that engage with the tab terminal 3 that is electrically connected to an external electrical component (not shown), are formed. The electric wire 3 is wired so as to straddle the wiring surfaces 1S and 2S of the two insulation panels 1 and 2 arranged via a predetermined gap d via one edge portions 1e and 2e. 2a.

  FIG. 2 is a partially enlarged view of the electric wire 3. The covering material 3a is peeled off at an arbitrary portion of the electric wire 3, and the conductive material 3b inside the electric wire 3 and the tab terminal 4 are electrically joined at that position. Here, it is preferable that the electric wire 3 uses a stranded thick wire 3c in a large current circuit, and a stranded wire or a single thin wire 3d in a middle and small current circuit. Moreover, as a connection method of the electric wire 3 and the tab terminal 4, any method of resistance welding, laser welding, soldering, and ultrasonic welding can be used.

  FIG. 3 is a cross-sectional view taken along the line A-A ′ of FIG. 1. One end of the tab terminal 4 made of metal is bent into a U-shape, and this U-shaped portion 4a is fitted into the locking hole 1b (2b) of the insulation panel 1 (2). The tip of the U-shaped portion 4a is engaged with a first locking portion 1c (2c) that is a step facing the Y side of the locking hole 1b (2b) facing the U-shaped portion 4a, and the tab terminal 4 is X To prevent it from coming out to the side. Further, the U-shaped portion 4a is formed with a locking piece 4b whose tip is bent outward on the opposite side. The locking piece 4b is a second locking portion 1d which is a step facing the X side formed on the wall surface of the locking hole 1b (2b) opposite to the first locking portion 1c (2c). (2d) is engaged, and the tab terminal 4 is prevented from coming off to the Y side. Further, the inside of the U-shaped portion 4 a of the tab terminal 4 is held so as to hold the electric wire 4. An end portion of the tab terminal 4 opposite to the U-shaped portion 4a is formed in a plate shape protruding upward and is electrically connected to a connector of an external electrical component (not shown).

  FIG. 4 is an exploded perspective view of the electric junction box.

  As for the 1st and 2nd insulation panels 1, 2, the back surfaces which are not wired via the insulating material 8 are overlapped. A box-shaped upper case 5 opened in a direction facing the first insulation panel 1 is disposed on the wiring surface side of the upper first insulation panel 1, and a second insulation disposed on the lower side. A lower case 6 that is detachably engaged with the upper case 5 is disposed on the wiring surface side of the adjustment panel 2. Here, a fuse mounting portion 5b and a relay mounting portion 5a that are detachably engaged with the fuse 9 and the relay 10 are integrally formed on the upper surface of the upper case 5, and a connector 11 is formed on the bottom surface of the lower case 6. A connector mounting portion 6a that is detachably engaged is integrally formed.

  In this way, the electric wire 3 which is a wiring material is wired across the one edge portions 1e and 2e on the wiring surfaces 1S and 2S side of the first and second insulation panels 1 and 2, It is possible to reduce the size of the electrical junction box by folding the second insulation panels 1 and 2 without wiring back so as to face each other and storing them in the case.

  FIG. 5 is a partially developed perspective view of the electrical junction box according to the second embodiment of the present invention, and FIG. 6 is a partial perspective view of the electrical junction box when stored.

  In addition to the first embodiment, a hinge 7 is provided between one edge 1e, 2e of the first and second insulation panels 1, 2. By using the hinge 7 in this way, it is not necessary to align the back surfaces of the insulation panels 1 and 2 and to fix the insulation panels 1 and 2 stably inside the upper and lower cases 5 and 6. can do.

It is an expansion perspective view of the electric junction box concerning the present invention. It is a partially expanded view of the same electrical junction box. It is A-A 'sectional drawing of FIG. It is a disassembled perspective view of the same electrical junction box. It is an expansion | deployment perspective view of the electrical junction box which concerns on other embodiment. It is a partial perspective view of the same electrical junction box.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1, 2 ... Insulation panel, 3 ... Electric wire, 4 ... Terminal, 5 ... Upper case, 6 ... Lower case, 7 ... Hinge, 8 ... Insulating material, 9 ... Fuse, 10 ... Relay, 11 ... Connector.

Claims (3)

A first insulating substrate having a wiring surface for laying an electric wire and having a terminal accommodating portion, the wiring surfaces being disposed opposite to each other; and
An electric wire laid so as to straddle the first and second insulating substrates from one edge side along the wiring surfaces of the first and second insulating substrates;
A terminal mounted on the terminal accommodating portion of the first and second insulating substrates so as to protrude toward the wiring surface side and electrically connected to the inner conductor of the electric wire;
An electrical connection box, comprising: a connector portion on the outer surface facing the tip of the terminal; and an upper and lower case for accommodating the first and second insulating substrates therein. The electric wire has an insulating coating peeled off at the portion of the terminal receiving hole of the first and second insulating substrates to expose the internal conductor,
The electrical connection box according to claim 1, wherein the terminal is joined to the exposed portion of the inner conductor of the electric wire by resistance welding, laser welding, soldering, or ultrasonic welding.   2. The electrical junction box according to claim 1, wherein the first and second insulating substrates are connected to each other through a hinge.

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