JP3102463B2 - Electric junction box and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connection box for connecting electric parts such as connectors and fuses used for wiring of an automobile, and a method of manufacturing the same.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional electric junction box proposed by us in Japanese Patent Laid-Open No. 4-172908. This electric connection box is used to hold a plurality of housings 36 provided for connecting fuses, connectors, and the like to the outer surface of the wiring board 35, press-fit terminals 37 press-fit into the housings 36, and wiring patterns of the electric wires 38. And a plurality of electric wire holding portions 39 protruding therefrom.

The pressure contact terminal 37 has a slot 8 at one end and a terminal portion 9 projecting from a hole (not shown) into the housing 36 at the other end. The method of manufacturing the electric connection box is such that one (or more)
Are arranged in accordance with a predetermined route,
An electric connection box is manufactured by pressing the electric wire 38 into the slot 8 of the above.

[0004] Fig. 6 is a schematic diagram of a Japanese Utility Model 1 proposed separately by us .
1 shows a conventional electric junction box described in JP-A-166419. This electric connection box includes a wiring board 40, an upper case 41 and a lower case 42. Wiring board 4
In 0, a plurality of bus bars 45 having tab terminals 43 for connecting a battery power supply circuit and tab terminals 44 for connecting a fuse are provided.

The upper case 41 has a fuse cavity 4
A plurality of pairs of terminal holes 47 are provided in the fuse cavity 46. One terminal hole 47
The other terminal hole 47 has a male terminal 48 at one end and a slot 49 for wire press-fitting at the other end.
Are fixed.
A plurality of terminal holes 51 for the tab terminals 43 are formed in the lower case 42, and each of the terminal holes 51 has a load-side pressure contact terminal 5.
0 '(the same structure as the fuse-side pressure contact terminal) is press-fitted and fixed.

In the method of manufacturing the electric junction box having the above-described structure , the bus bar 45 is disposed on the wiring board 40 and the upper case 4
The fuse-side press-connecting terminal 50 is inserted into the terminal hole 47 of the first fuse cavity 46, and the load-side press-contact terminal 50 ′ is inserted into the terminal hole 51 of the lower case 42. ′ Are connected by an electric wire 52, and an electric junction box is manufactured by sandwiching the wiring board 40 between an upper case 41 and a lower case 42.

[0007]

However, in the above-mentioned first conventional example, when it is necessary to connect not only the downward direction of the wiring board but also the upward direction of an electric component such as a connector or a fuse, the press contact terminal is not provided. Upside down, the wire was press-fitted and fixed to the wiring board, and the wire was press-fitted to the upside-down press contact terminal.However, this method had a problem to be solved in that the press-contact state of the wire against the upside-down press-contact terminal could not be confirmed. there were. Further, in the second example, in order to connect using a wire the press contact terminal provided on the upper cover and the press contact terminal provided on the lower cover, a large number of long wires are required, and the inconvenience of storing the wires, The solution is that it takes time to wire and wire
There were issues that had to be addressed .

Therefore, according to the present invention , the electric parts can be connected not only to the lower side but also to the upper side with respect to the wiring board, and it is possible to easily check the press-fitted state of the electric wire against the upside-down press-connecting terminal. An object of the present invention is to provide an electric junction box which shortens the length of electric wires used for connection between them, facilitates storage of electric wires, and further reduces the time required for laying electric wires, and a method for manufacturing the same.

[0009]

The electric junction box of the present invention comprises:
As described in claim 1, an electric wire holding an electric wire is provided on the upper surface.
The support provided with the wire insertion portion and the pressure provided on the support
Wires on one of the wiring boards with multiple contact terminals
The other wiring that is routed by crimping to the crimp terminal
And a plate, made to face the upper surfaces of both wiring board state
In the above, the support portion and the pressure contact terminal of one of the wiring boards are
The other wiring board to correspond to the position
A window is provided on the other wiring board, and the window is
The cut and routed wire is connected to one of the wires in the window.
Specially that it is pressed against the pressure contact terminals
Sign. The method for manufacturing an electric junction box according to the present invention is described in claim 2.
As described in, the wire insertion part that holds the wire on the upper surface
And a pressure contact terminal provided on the support
On one of the wiring boards provided with a plurality of
The other wiring board that is wired by pressing against the
The method for manufacturing an electrical junction box to be used, the method comprising:
When they are opposed to each other, the support portion and the
So that it corresponds to the position where the
A window is provided on the other wiring board, and both wiring boards are
By superimposing so that they are facing each other, one wiring
The wire of the other wiring board is held in the wire insertion portion of the board.
A first step to cross the window of the other wiring board
Install the routed wires on one of the wiring boards in the window.
And the second step of pressing against the press-contact terminal
It is characterized by that.

[0010]

According to the first aspect of the present invention , the electric wire crosses the pressure contact terminal without being bent by being locked by the electric wire insertion portion of the support portion. The crimp terminal, the support, and the wire are always visible through the window. According to the second aspect of the present invention , the upper surfaces face each other.
When one wiring board and the other wiring board overlap,
The length of the electric wire routed on one of the wiring boards is shorter than the conventional length. Since the electric wire is pressed against the press contact terminal inside the window, the press contact state can be easily seen through the window.

[0011]

1 to 3 show one embodiment of an electric junction box according to the present invention. This electric connection box has a window 1 for pressing an electric wire 5 routed on an upper wiring board 3 to a press contact terminal 6 fixed to a lower wiring board 4, and a terminal press-in hole 2 of the lower wiring board 4. And a pair of supporting portions 2 and 2 for supporting the electric wire 5 when the electric wire 5 is pressed against the press-contact terminal 6 on both sides of the press-fit terminal 6 press-fitted and fixed.

The upper wiring board 3 is provided according to a predetermined route with a press-contact terminal 11 press-fitted and fixed at a desired location, a holding portion 10 for holding the electric wire 5 when the electric wire 5 is routed. The structure of the upper wiring board 3 and its manufacturing method are described in Japanese Patent Application Laid-Open No. HEI 4-172908, which comprises the electric wire 5 pressed into the slot 11 'of the pressing terminal 11 and the hole 12 for the tab terminal 7 of the bus bar of the lower wiring board 4. Since it is described in the official gazette, detailed description is omitted.

The pair of supporting portions 2 and 2 are each formed of a press-contact terminal 6 (FIG. 5) having a cross shape and a slot 8 at an upper end and a terminal portion 9 at a lower end, and a tab terminal 7 of a bus bar. An electric wire 5 sandwiched between the press contact terminals 6 on both sides of the press-connecting terminal 6 on the projecting lower wiring board 4 and arranged on the upper wiring board 3.
Is formed so as to be orthogonal to the electric wire 5 and to be aligned with the slot 8.

The window 1 has a rectangular shape, and among the electric wires 5 arranged on the upper wiring board 3, the electric wire 5 to be pressed against the press contact terminal 6 of the lower wiring board 4, Slot 8 of 6
And the supporting portion 2 sandwiching the slot 8 in a sandwich shape have a size that can be accommodated in the same window portion 1. In addition,
When one wire is pressed against a set of slots, one wire is set to be at the center of the window, but when multiple wires are pressed against the slot, Are set to be parallel to the window.

Next, the electric wires 5 arranged on the upper wiring board 3
To the slot 8 of the press contact terminal 6 disposed on the lower wiring board 4.
A method of pressing the contact will be described . As shown in FIG. 2, first, the upper wiring board 3 having the window portion 1 and having the wires 5 routed is inverted with respect to the lower wiring board 4 (hereinafter, the inverted upper wiring board is denoted by 3. ′) , That is, the upper surface of the upper wiring board 3
The upper surface of the lower wiring board 4 is opposed and overlapped. As shown in FIG. 3A, when one looks through the window 1, one wire 5
Is pressed into a set of slots 8, one wire 5 is seen in the center of the window 1, and a pair of slots 8 is supported under the wire 5, and the wires 5 are supported by sandwiching the slots 8 in a sandwich manner. The support 2 is visible.

As shown in FIG. 3B, in this state, the lower wiring board 4 is translated toward the upper wiring board 3 '(or conversely, the upper wiring board 3' is moved to the lower wiring board 4). The wire 5 is brought into contact with a stripping blade 8 ′ formed at the end of the slot 8 for stripping the wire, and the wire 5 is supported and stabilized by the wire insertion portion 2 ′.

Next, the window unit 1 is pressed by using an electric wire pressing device (not shown in detail because it is a well-known technology) 13 for pressing an electric wire to a press-connecting terminal by vertical movement of a cylinder (not shown).
The electric wire 5 of the upper wiring board 3 ′, which is visible inside, is pressed against the slot 8 of the press contact terminal 6 of the lower wiring board 4. As shown in FIG.
As described above, the electric wire 5 is pressed against the press contact terminal 6, and the upper wiring board 3 'and the lower wiring board 4 are connected by an upper case and a lower case (not shown).
To manufacture an electrical junction box. Instead of the lower wiring board, a tab terminal, a press contact terminal, and a support portion are directly provided on the lower case, and the electric wires routed on the upper wiring board are pressed against the press contact terminals of the lower case to form an electric connection box. It may be manufactured.

Further, it is also possible to mount the lower wiring board on the upper wiring board instead of the printed circuit board, whereby the printed circuit board and the electronic unit can be mounted. Further, as another embodiment, as shown in FIGS. 4A and 4B, the bus bar 15 and the press contact terminal 16 are connected, the electric wire 17 is routed, and the upper side where the window 18 is formed. The wiring board 19 is inverted, and the inverted upper wiring board 19 is inverted.
The electric wire 17 is pressed by the electric wire pressing device 13 through the window 18 to the press contact terminal 21 formed on the electronic unit 20.

Next, an upper cover 24 provided with a fuse 22 and a connector 23 at desired positions is placed on the inverted upper wiring board 19 ', and the fuse 22 and the connector 23 are placed.
And the like and the tab terminal 25 of the bus bar 15 are connected via the female-female terminal 26 to manufacture the connection body 27. The electronic unit 2 of the connecting body 27 is attached to a lower case 29 having a locking projection 28.
0, the upper case 31 having the engaging portion 30 for the locking projection 28 is put on the upper cover 24 side of the connecting body 27, and the locking projection 28 and the engaging portion 30 are engaged with each other to form an electric connection box. To manufacture.

[0020]

According to the electric junction box and the method for manufacturing the same of the present invention, the electric wire crosses the press-connecting terminal without being bent by being bent by the wire insertion portion of the support portion.
Poor crimping between the crimp terminal and the wire is prevented, and the reliability of the crimping operation is increased. Since the length of the electric wires routed on the wiring board is reduced, the length of the electric wires is saved, and the electric wires can be easily stored in the wiring board. Since the crimping operation is always visible inside the window, the wire is securely crimped to the crimping terminal. Accordingly, waste of electric wires is prevented, and the time for disposing the electric wires on the wiring board is shortened, so that the operation cost is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of an electric junction box according to the present invention.

FIG. 2 is a perspective view showing a state in which the upper wiring board is inverted.

3A and 3B are perspective views showing an operation of pressing an electric wire to the press-connecting terminal, wherein FIG. 3A is a perspective view before pressing, FIG. 3B is a perspective view during pressing, and FIG. 3C is after pressing. It is a perspective view of a state.

FIG. 4 shows another embodiment of the electric junction box according to the present invention,
(A) is an overall perspective view, and (b) is a perspective view of a main part in the X direction.

FIG. 5 is a perspective view showing a conventional electric junction box.

FIG. 6 is a perspective view showing the electric junction box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Window part 2 Support part 2 'Electric wire insertion part 2 "Terminal press-in hole 3 Upper wiring board 4 Lower wiring board 5 Electric wire 6,11 Pressure contact terminal

Claims (2)

(57) [Claims] An electric wire insertion portion for holding an electric wire is provided on an upper surface.
The support part provided and the pressure contact terminal provided on the support part are
On one of the wiring boards provided, and on the top surface, wire the wires by crimping them to the crimp terminals.
And the other wiring board, and in a state where the upper surfaces of both wiring boards face each other,
The supporting portion and the pressure contact terminal of one of the wiring boards are provided.
Window on the other wiring board to correspond to the position
And an electric wire routed across the window of the other wiring board
Is a press-contact end provided on one of the wiring boards in the window portion.
An electric junction box which is pressed against a child . 2. An electric wire insertion portion for holding an electric wire is provided on an upper surface.
The support part provided and the pressure contact terminal provided on the support part are
On one of the wiring boards provided, and on the top surface, wire the wires by crimping them to the crimp terminals.
A method for manufacturing an electric junction box using the other wiring board.
Therefore, when the upper surfaces of both wiring boards are opposed to each other,
Corresponds to the position where the support part and the pressure contact terminal are provided
A window is provided on the other wiring board so that
By superposing both wiring boards so that the top surfaces face each other
In front of the other wiring board at the wire insertion part of one wiring board.
A first step of holding the electric wire, and an electric wire routed across the window of the other wiring board
A press-contact end provided on one of the wiring boards in the window portion.
And a second step of pressing against the child
Manufacturing method of electrical junction box.