JPH1169568A - Electric junction box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive not to make an equipment bulky by connecting a printed board and an inner circuit board by a flexible printed board, and allowing a connector to which an external connector is connected to overlap the inner circuit board at its end. SOLUTION: In the inside of an upper case 1 and a lower case 2 of an electric junction box J/B, a circuit board 5 and a printed board 16 are housed. In one side of the lower case 2, a slot-in connector 12 is mounted and is connected to a circuit of the circuit board 5 through a flexible board 13. In one side of the printed board 16, a terminal 16a is formed and is plugged into the slot-in connector 12 to electrically connect the circuit of the printed board 16 and that of the circuit board 5. In the other side of the printed board 16, a connector 8 to be joined to an external connector is installed. At that time, the connector 8 is allowed to overlap the end 5a of the circuit board 5. By this method, a connector for connection can be eliminated and so the height of the electric junction box can be reduced by the height of the connector for connection. The height of the electric junction box is also reduced by the part of overlap of the connector 8 and the circuit board 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric junction box capable of accommodating an electronic unit integrally so as not to be bulky.

[0002]

2. Description of the Related Art An electrical junction box used for branch connection of a wiring harness for automobiles to various electric components is provided with branch connection points concentrated at one place, and wiring is rationally and economically connected. With the increase in the density of wire harnesses, various types have been developed according to vehicle types or applications.

[0003] As the electric junction box J / B as described above,
As shown in FIGS. 3 and 4, the upper case 1 and the lower case 2 accommodate an internal circuit board 5 formed by laminating a bus bar 3 and an insulating plate 4, and a tab of the bus bar 3 from outside the cases 1 and 2. There is a terminal 3a in which a connector 10 of an electronic unit 7 containing a printed circuit board 6 on which an electronic unit circuit is formed is inserted and connected (an electronic unit separate type). Reference numeral 8 denotes a connector which is attached to the printed circuit board 6 by being turned sideways and for connecting an external connector 9.

Although not specifically shown, a printed circuit board 6 on which an electronic unit circuit is formed together with the internal circuit board 5 is accommodated in each of the cases 1 and 2.
The connector 10 of the printed circuit board 6 is inserted and connected to the tab terminal 3a of the bus bar 3 (electronic unit integrated type).

[0005]

However, in any of the above types, the printed circuit board 6 of the electronic unit 7 is inserted and connected to the tab terminal (male terminal) 3a of the bus bar 3 from the thickness direction (see arrow A). Since the connector (female terminal) 10 having a high height T is required, there is a problem that the electronic unit (the electric connection box J / B in the case of the integral type) 7 becomes bulky.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has as its object to provide an electric junction box in which an electronic unit can be housed integrally so as not to be bulky. Things.

[0007]

According to the present invention, a printed circuit board having an electronic unit circuit and an internal circuit board is housed in a case of an electric connection box. A circuit board is connected with a flexible printed board, and a connector for connecting an external connector is provided on the printed board, and the connector is partially wrapped around an end of the internal circuit board. An electric connection box is provided.

According to the present invention, a high-height connector for connecting the internal circuit board and the printed circuit board is provided by connecting the internal circuit board contained in the case and the printed circuit board with the flexible printed circuit board. It becomes unnecessary.

Further, by partially wrapping the connector for coupling the external connector to the end of the internal circuit board,
The height of the electrical junction box is reduced by the amount of the wrap.

When the electronic components on the printed circuit board are turned sideways, the height of the electric connection box is reduced by the amount of the sideways turning.

According to a third aspect of the present invention, a slot-in connector is provided in the case, a flexible printed board of the internal circuit board is connected to the slot-in connector, and terminal terminals formed on the printed board are connected to the slot-in connector. It can be configured to be plugged in.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. Note that the same components and operations as those of the prior art are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 1 and FIG.
/ B includes an upper case 1 and a lower case 2, and inside each of the cases 1 and 2, a circuit board 5 formed by laminating an insulating plate 3 and a bus bar 4, and a printed board on which an electronic unit circuit is formed 16 are accommodated.

The electronic component 11 having a height, out of the electronic components on the printed circuit board 16, is turned sideways as shown in FIG.

As shown in FIG. 2A, a slot-in connector 12 is provided on one side of the lower case 2 so that the circuit of the circuit board 5 and the slot-in connector 1 are provided.
2 terminals are connected via the flexible printed circuit board 13.

A terminal 16a is formed on one side of the printed circuit board 16, and the terminal 16a is inserted into the slot-in connector 12 and connected thereto, whereby the circuit of the printed circuit board 16 and the circuit of the circuit board 5 are connected. It becomes electrically connected.

As shown in FIG. 2B, the circuit of the circuit board 5 and the circuit of the printed board 13 are directly connected via the flexible printed board 13 without providing the slot-in connector 12. You may do it.

A connector 8 for connecting an external connector 9 is provided on the other side of the printed circuit board 16. At this time, in the related art (see FIG. 4), the printed board 13 could not be brought close to the circuit board 5 due to the restriction of the height T of the connector 10, but as shown in FIGS. Substrate 1
3, the end 5a on the other side of the circuit board 5 is made shorter than the position of the connector 8 on the other side, and a part of the connector 8 is wrapped R on the end 5a of the circuit board 5 so that the wrap R Only the printed circuit board 13 can be brought closer to the circuit board 5. Instead of shortening the entire end 5a on the other side of the circuit board 5, a notch may be formed in the end 5a so that the connector 8 can be wrapped.

On the side surfaces of the two cases 1 and 2, an insertion portion 1 for inserting an external connector 9 into the connector 8 is provided.
a, 2a are provided so as to protrude outward.

When the electric junction box J / B is configured as described above, the slot-in connector 12 is provided in the lower case 2,
The flexible printed board 13 of the circuit board 5 can be connected to the slot-in connector 12, and the terminal 16 a of the printed board 16 can be inserted and connected to the slot-in connector 12. Further, the circuit configuration can be easily changed by changing the type of the printed circuit board (electronic unit circuit) 13 to be inserted and connected to the slot-in connector 12.

When the circuit board 5 and the printed board 16 are directly connected to each other by the flexible printed board 13, no connector is required, and the height of the electrical connection box is reduced by the amount of the connector.

Further, by wrapping a part of the connector 8 on the end 5a of the circuit board 5, the connector 8 for coupling the external connector 9 is connected to the electric connection box J by the wrapping amount R.
/ B decreases. Furthermore, when the electronic component 11 of the printed circuit board 16 is turned sideways, the height of the electric connection box J / B is reduced by the amount of the sideways turning.

[0023]

As is clear from the above description, the electric connection box of the present invention has a conventional connection connector because the internal circuit board in the case and the printed board are connected by a flexible printed board. Since it becomes unnecessary, the height of the electrical junction box can be reduced accordingly, and the connector for connecting the external connector is partially wrapped around the end of the internal circuit board. Can be lowered. Thus, the electronic unit can be housed integrally so as not to be bulky in the electric connection box.

Further, when the electronic components on the printed circuit board are turned sideways as in claim 2, the height of the electric connection box can be reduced by the amount of turning the electronic parts sideways.

Furthermore, when a printed circuit board is inserted into and connected to the slot-in connector, the circuit configuration can be easily changed by changing the type of the printed circuit board (electronic unit circuit). Will be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an electric junction box according to the present invention.

FIG. 2A is a sectional view of a main part of an electric connection box in which a slot-in connector of a printed board and a circuit board are connected by a flexible printed board, and FIG. 2B is a flexible printed board connecting the printed board and the circuit board; It is principal part sectional drawing of the electric connection box connected by (1).

FIG. 3 is an exploded perspective view of a conventional electric junction box and an electronic unit.

FIG. 4 is a sectional view of a main part of a procedure for connecting an electronic unit to an electric connection box.

[Explanation of symbols]

 J / B Electrical connection box 1 Upper case 2 Lower case 5 Circuit board 5a Terminal terminal 8 Connector 9 External connector 11 Electronic component 12 Slot-in connector 13 Flexible printed circuit board 14 Printed circuit board 16a Terminal terminal R wrap

Claims (3)

[Claims] 1. A printed circuit board on which an electronic unit circuit is formed together with an internal circuit board is accommodated in a case of an electric connection box, and the printed circuit board and the internal circuit board are connected by a flexible printed circuit board. An electrical connection box, comprising a connector for coupling an external connector, wherein the connector is partially wrapped around an end of an internal circuit board. 2. The electrical junction box according to claim 1, wherein the electronic components of the printed circuit board are turned sideways. 3. A slot-in connector is provided in the case, a flexible printed board of the internal circuit board is connected to the slot-in connector, and terminal terminals formed on the printed board are inserted into the slot-in connector and connected. An electrical junction box according to claim 1 or claim 2.