JP2000295736A - Automotive electrical junction box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with circuit change quickly and at a low cost and meet the requirements of variety of circuits of individual vehicle grades easily. SOLUTION: An electrical junction box has an insulating board 12 which has compression terminal fixing parts 22 on its upper and lower surfaces, wires 14A and 14B wired on its upper side and lower side, upper surface compression terminals 16A connected to the wires 14A on its upper side by compression with the compression terminal fixing parts 22 on its upper surface and lower surface compression terminals 16B connected to the wires 14B on its lower side by compression with the compression terminal fixing parts 22 on its lower surface. The respective compression terminal fixing parts 22 on the insulating board 12 have same shapes so as to be applicable to both the upper surface connection terminals 16A and lower surface compression terminals 16B. With this constitution, it is not necessary to replace the insulating board 12 for circuit change and the same type insulating boards 12 can be applied to variety of circuits of individual vehicle grades.

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 for a motor vehicle in which at least a part of an internal circuit is composed of electric wires and press-connecting terminals.

[0002]

2. Description of the Related Art A conventional electric junction box of this type is shown in FIGS. In the drawing, reference numeral 10 denotes a case (only the upper case is shown, and the lower case is not shown);
An insulating plate installed in the inside, 14A is an insulated wire wired on the upper surface side of the insulating plate 12, 14B is an insulated wire wired on the lower surface side of the insulating plate 12, 16A is press-connected to the upper surface side wire 14A. The upper surface pressure contact terminal 16B is a lower surface pressure contact terminal which is press-connected to the lower surface side electric wire 14B.

[0003] The press contact terminal 16A for the upper surface and the press contact terminal 16 for the lower surface
B respectively, as shown in FIG.
18 has a male terminal portion 20 on the other end side. Insulating plate
12, a pressure contact terminal fixing portion 22A into which the wire pressure contact portion 18 of the upper surface pressure contact terminal 16A is inserted and fixed, and a pressure contact terminal fixing portion 22B into which the wire pressure contact portion 18 of the lower surface pressure contact terminal 16B is inserted and fixed are integrally formed. Have been. Wire receiving recesses 24 are formed in the press contact terminal fixing portions 22A and 22B.

The electric wires 14A, 14A
B, and press-fit terminal 16 into press-fit terminal fixing portions 22A and 22B.
When A and 16B are pushed in, electric wires 14A and 14B
A and 16B are electrically connected to form an internal circuit of the electric junction box. The male terminals 20 of the insulation displacement terminals 16A and 16B
As shown in FIG. 8, the connector protrudes into a connector housing 26 formed in the case 10 and forms a connector together with the connector housing 26.

[0005]

In a conventional electric junction box of this type, the fixing portion 22A of the top-surface press-connecting terminal 16A is formed by the insulating plate 12A.
Press-fit terminal 16B for the lower surface
The fixing portion 22B is formed so as to penetrate the insulating plate 12 and protrude from the upper and lower surfaces of the insulating plate 12. However, with such a structure, when the internal circuit is changed, it is difficult to quickly respond to the change at low cost. For example, when it is necessary to change the circuit of FIG. 10 to the circuit of FIG. 11, that is, the press contact terminal 16A ₁ connected to the electric wire 14A on the upper surface side.
One 16A ₃ of ～16A _3, since if the need to change occurs in the pressure contact terminal 16B ₃ which is connected to the lower surface side of the wire 14B is must remake the insulating plate 12, the mold There is a problem that it takes time and money to manufacture.

Further, since the internal circuit of the electric junction box has a different wiring pattern depending on the grade even in the same vehicle type, if the circuit on the upper side and the circuit on the lower side are completely distinguished, it is necessary to correspond to various circuits according to grade. Is difficult.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric junction box for an automobile which can flexibly cope with circuit changes and easily cope with various circuits of different grades in view of the above problems.

[0008]

In order to achieve this object, an electric connection box for a vehicle according to the present invention comprises: an insulating plate having a press-connecting terminal fixing portion on an upper surface and a lower surface in a case; An electric wire wired on the lower surface, an upper surface pressure contact terminal press-connected to the upper surface electric wire at a press terminal fixing portion on the upper surface of the insulating plate, and an electric wire on the lower surface with a press contact terminal fixing portion on the lower surface of the insulating plate And a press-fit terminal fixing portion of the insulating plate, wherein the press-fit terminal fixing portion of the insulating plate is formed in the same shape so that the press-fit terminal for the upper surface and the press-fit terminal for the lower surface can be fixed. Is what you do.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. [Embodiment 1] FIGS. 1 and 2 show an embodiment of the present invention. In this electric junction box, the insulating plate 12 in the case 10
The wires 14A and 14B are wired on the upper and lower sides of the wire, the upper surface pressure contact terminal 16A is pressure connected to the upper surface wire 14A, and the lower surface pressure contact terminal 16B is pressure connected to the lower surface wire 14B. Is similar to the conventional electrical junction box shown in FIGS.

The electrical connection box is different from the conventional electrical connection box in that the press-contact terminal fixing portion 22 formed on the insulating plate 12 is different from the conventional press-connect terminal for upper surface.
That is, they are formed in the same shape so that they can be fixed to both the 16A and the press-contact terminals 16B for the lower surface. That is, as shown in FIG. 2A, the press contact terminal fixing portion 22 is formed so as to penetrate the insulating plate 12 and protrude from both the upper and lower surfaces of the insulating plate 12, and to connect electric wires to both upper and lower ends thereof. This is a structure in which the receiving recess 24 is formed. Therefore, as shown in FIG. 2 (a), if the upper wire 14A is set in the upper wire recess 24 and the upper press contact terminal 16A is pushed in, the upper wire 14A is pressed as shown in FIG. 2 (b).
The upper wire 14A and the upper pressure contact terminal 16A can be connected as described above. Similarly, if the lower wire 14B is set in the lower wire receiving recess 24 and the lower press contact terminal 16B is pushed in, The lower surface side electric wire 14B and the lower surface pressure contact terminal 16B can be connected.

Since the electric junction box has the above-described configuration, it can flexibly cope with a large circuit change including connection switching between the upper surface and the lower surface of the insulating plate 12. For example, FIG.
When the circuit of (a) needs to be changed to the circuit shown in FIG. 4 (a) occurs, Figure 3 the upper surface of the pressure contact terminal 16A ₁ ~16A ₃ for which has been connected to the upper surface side of the wire 14A of the (b) One of them 16A
₃ to the press-contact terminal 16B ₃ for the lower surface,
By simply connecting to B, that is, without changing the insulating plate 12, it is possible to cope with circuit changes. Further, since it is possible to connect to the electric wire 14A on the upper surface and the electric wire 14B on the lower surface only by changing the pressure contact terminal, it is possible to easily cope with various circuits of different grades using the same insulating plate.

FIG. 5 shows a specific example of an electric junction box including the above wiring structure. 10A is an upper case, 10B is a lower case, 12 is an insulating plate (center plate), 14A,
14B is an electric wire wired on the upper and lower sides of the insulating plate 12, 16
A is an insulation displacement terminal for the upper surface, 16B is an insulation displacement terminal for the lower surface, 26 is a connector housing, 28 is a fuse, 30 is a bus bar, 32 is a receptacle, 34 is a case for an electronic circuit incorporated in a part of the lower case 10B, 36 is This is a cover for the case 34.

[Embodiment 2] FIG. 6 shows another embodiment of the present invention. In this embodiment, the upper surface pressure contact terminal 16A is pressed from the upper surface side of the insulating plate 12 and the lower surface pressure contact terminal 16B is pressed into the pressure contact terminal fixing portion 22 from the lower surface side of the insulating plate 12. In this case, the portion of each insulation displacement terminal fixing portion 22 protruding on the upper surface side of the insulating plate 12 and the portion protruding on the lower surface side may be formed in the same shape. In this case, the press contact terminals 16A and 16B having the same size can be used. The configuration other than the above is shown in FIGS.
Therefore, the same reference numerals are given to the same parts and the description is omitted.

[Embodiment 3] FIG. 7 shows still another embodiment of the present invention. In this embodiment, the insulation displacement terminals 16A, 16B
Are formed at the middle portion of the pressure contact terminal fixing portion 22 so as to be in contact with the edge (upper surface) of the press contact terminal fixing portion 22. By providing such a protruding piece 38, the press contact terminals 16A and 16B pushed into the terminal fixing portion 22 can be stopped at regular positions and can be prevented from dropping further. Since the configuration other than the above is the same as that of the first embodiment shown in FIGS. 1 and 2, the same portions are denoted by the same reference numerals and description thereof will be omitted.

[0015]

As described above, according to the present invention, the press-contact terminal fixing portion of the insulating plate is formed so as to be fixed to either the press-contact terminal for the upper surface or the press-contact terminal for the lower surface. The circuit change including the connection switching between the side and the lower surface can be performed without changing the insulating plate. Therefore, it is possible to quickly and inexpensively cope with a circuit change of the electric junction box. In addition, the same insulating plate can cope with various circuits of different grades, which is economical.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of an electric junction box according to the present invention.

FIG. 2 (a) shows an embodiment of the present invention, in which a state before a press contact terminal is pushed into a press contact terminal fixing portion of an insulating plate;
(B) is sectional drawing which shows the state after pushing in.

FIG. 3 shows an example of a circuit change of the electric junction box of the present invention.
(A) is a circuit diagram before a change, (b) is a sectional view of an actual wiring structure of the circuit of (a).

4A is a circuit diagram after the change, and FIG. 4B is a cross-sectional view of an actual wiring structure of the circuit in FIG.

FIG. 5 is an exploded perspective view showing an example of the entire structure of the electric junction box according to the present invention.

FIGS. 6A and 6B are cross-sectional views showing another embodiment of the present invention, in which FIG. 6A shows a state before the press contact terminal is pushed into the press terminal fixing portion of the insulating plate, and FIG.

FIG. 7 shows a still further embodiment of the present invention.
(A) is a perspective view showing a state before pushing a press contact terminal into a press contact terminal fixing part of an insulating board, (b) is a sectional view showing a state after pushing.

FIG. 8 is a sectional view of a main part showing an example of a conventional electric junction box.

FIG. 9 is a cross-sectional view showing a state before a press contact terminal is pushed into a press contact terminal fixing portion of an insulating plate in a conventional electric connection box.

FIG. 10 shows an example of a circuit change of a conventional electric junction box.
(A) is a circuit diagram before a change, (b) is a sectional view of an actual wiring structure of the circuit of (a).

FIG. 11A is a circuit diagram after the change, and FIG.
4A is a cross-sectional view of the actual wiring structure of the circuit of FIG.

[Explanation of symbols]

 10: Case 12: Insulating plate 14A: Upper side wire 14B: Lower side wire 16A: Upper surface pressure contact terminal 16B: Lower surface pressure contact terminal 18: Wire pressure contact portion 20: Male terminal portion 22: Pressure contact terminal fixing portion 24: Electric wire Receiving recess

Claims (1)

[Claims] An insulating plate having a press contact terminal fixing portion on an upper surface and a lower surface in a case, electric wires wired on the upper and lower surfaces of the insulating plate, and a press contact terminal fixing portion on the upper surface of the insulating plate. An upper-surface press-connecting terminal connected to the upper-side electric wire by pressure contact; and a lower-surface press-connecting terminal connected to the lower-surface wire by a press-fit terminal fixing portion on the lower surface of the insulating plate. The electric connection box for an automobile, wherein the portions are formed in the same shape so that both the upper surface pressure contact terminal and the lower surface pressure contact terminal can be fixed.