JP2001223478A - Built-in structure of electronic unit into electric connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a built-in structure of electronic units into miscoupling- preventive electric connection boxes which undergoes no restriction in space for mounting electric components in electronic units. SOLUTION: A built-in structure of electronic units into electric connection boxes that joined electric connection boxes 11A, 11B, and 11C and electronic units 12A, 12B, and 12C are provided with miscoupling-preventive parts keeps, as the said miscoupling-preventive parts, miscoupling-preventive ribs 15A, 15B, 15C, 16A, 16B, 16C, 17A, 17B, and 17C projected outside the outer rims in the center regions of the electric connection boxes and the electronic units so that the miscoupling-preventive ribs 15A, 15B, 15C, 16A, 16B, and 16C on the electric connection box side and the misconnection-preventive ribs 17A, 17B, and 17C on the electronic unit side may interfere when the electric connection boxes and the electronic units combine improperly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a structure for assembling an electronic unit to an electric junction box such as a junction box.

[0002]

2. Description of the Related Art With the digitization of automobiles, electronic components mounted on vehicles have been diversified, and the electric wires and cables forming their wiring circuits and the wire harnesses that bundle them have also been increasing. . In recent years, in order to prevent complications due to an increase in harnesses, the electronic units are mechanically connected and combined into an electrical junction box that incorporates harnesses as much as possible inside, and both male and female terminals are electrically connected. Such a structure is often used.

FIG. 5 is a view showing a conventional example of a structure in which an electric junction box and an electronic unit are combined, and FIG.
FIG. 5B is a plan view. In FIG. 5, the electronic unit is indicated by a two-dot chain line for convenience.

In FIGS. 5A and 5B, reference numeral 1 denotes an electric connection box, and reference numeral 2 denotes an electronic unit. Electrical junction box 1
The electronic unit 2 and the electronic unit 2 are mechanically connected, and the male and female connector portions 3 and 4 of the two are electrically connected by the mechanical connection.

[0005] Such an electric junction box 1 and an electronic unit 2
In the conventional structure, the combination is often changed depending on the specification. Conventionally, as shown in the illustrated example, the erroneous coupling preventing boss 5 is protrudingly provided at the surface joining portion in the central area on the side of the electric connection box 1 to prevent the electronic connection. A boss 5 for preventing misconnection is provided on the unit 2 side.
Is provided.
By changing the position of, only when the proper combination,
The incorrect coupling prevention boss 5 fits into the recess 6 (becomes non-interfering),
In the case of an improper combination, the erroneous coupling prevention boss 5 interferes with a portion other than the concave portion 6 on the partner side.

With this arrangement, the electronic unit 2 can be connected to the electrical junction box 1 to the end when the combination is proper, but when the combination is incorrect, the erroneous coupling prevention boss 5 is connected to the concave portion 6 on the mating side. By interfering with parts other than the above, the connection is disabled at an intermediate stage to prevent erroneous connection.

[0007]

However, in the above-described conventional assembly structure, since the concave portion 6 corresponding to the erroneous coupling prevention boss 5 is formed in the component arrangement area on the electronic unit 2 side, the electronic unit 2 When electrical components are mounted on the circuit board, space limitations are imposed. When a tall electrical component such as a relay is mounted on the board of the electronic unit 2, a protective case (not shown) for the electronic unit 2 is mounted. ) Interfere with each other.

The present invention has been made in consideration of the above circumstances, and has assembling of an electronic unit to an electric junction box having a function of preventing erroneous coupling without being restricted by any space in mounting electric components on the electronic unit. The purpose is to provide a structure.

[0009]

According to the first aspect of the present invention, at least one of the electric junction box and the electronic unit, which are combined with each other, does not interfere with the other party when they are properly combined. The structure of assembling an electronic unit to an electrical junction box provided with an erroneous coupling prevention part that makes it impossible to combine the two by interfering with the other party when they are improperly combined. In the erroneous coupling preventing part, erroneous coupling preventing ribs are respectively protruded outside the outer peripheral edge of the central region of the electric connection box and the electronic unit, and when the electric connection box and the electronic unit are improperly combined, the The erroneous connection preventing rib on the connection box side and the erroneous connection preventing rib on the electronic unit side interfere with each other.

In the assembly structure according to the present invention, the erroneous connection preventing portion is provided in the form of a rib outside the outer peripheral edge of the central area of the electric junction box and the electronic unit, so that the central part for laying out the electric components is provided. Misconnection can be prevented without restricting the region. In this case, erroneous coupling can be prevented for a large number of combinations only by changing the positions of the erroneous coupling preventing ribs.

According to a second aspect of the present invention, there is provided a structure for assembling the electronic unit to the electrical junction box according to the first aspect, wherein the erroneous coupling preventing rib is disposed near a lock mechanism between the electrical junction box and the electronic unit. It is characterized by having been done.

In the assembly structure of the present invention, since the erroneous connection preventing rib is arranged near the lock mechanism for locking the electric junction box and the electronic unit, the erroneous connection can be reliably prevented immediately before the locking. .

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an assembled structure according to a first embodiment of the present invention, in which electrical connection boxes 11A, 11B, and 11C of three specifications (A), (B), and (C) and an electronic unit 12A,
FIG. 13 is a partial plan view showing a state in which 12B and 12C are combined with each other in an appropriate combination. FIG. 2, FIG. 3, FIG.
FIG. 3A is a diagram showing a procedure for combining the electrical connection box 11B and the electronic unit 12B of the (B) specification as a representative, and FIG.
Is a side view, and (b) of each figure is a plan view.

In each specification, the electric connection boxes 11A, 11B,
Male and female connectors 13 and 14 are provided in a central region of the electronic unit 11C and the electronic units 12A, 12B and 12C, which are electrically connected when properly connected to each other. The central region is a portion facing each other when the electric connection boxes 11A, 11B, 11C and the electronic units 12A, 12B, 12C are combined, and electronic components are mounted in the central region on the electronic unit 12A, 12B, 12C side. A substrate (not shown) is provided.

The electric connection boxes 11A, 11B, 11C and the electronic units 12A, 12B, 12C have a substantially rectangular shape in plan view, and have an outer peripheral edge of a rectangular central area (an outer peripheral edge on the electronic unit side is defined by a peripheral wall). Is provided on one end side with hinges 23 for rotatably connecting the electric connection boxes 11A, 11B, 11C and the electronic units 12A, 12B, 12C, and the other end side with the electric connection boxes 11A, 11A.
Lock mechanisms 21 and 22 are provided for locking the electronic units B and 11C and the electronic units 12A, 12B and 12C in a correctly assembled state.

Then, the ribs 15A, 15B, 15C, 16A, and 16 are positioned near the lock mechanisms 21 and 22 and provided on the side of the electric connection boxes 11A, 11B, and 11C.
B, 16C are provided, and the electronic units 12A, 12B,
Misconnection prevention ribs 17A, 17B and 17C are provided on the 12C side.

These misconnection preventing ribs 15A, 15B, 1
5C, 16A, 16B, 16C, 17A, 17B, 17
C is, as shown in FIG. 1, 3 of (A), (B) and (C).
It is arranged at a different position for each specification, so that it does not interfere with each other only when the combination of the specifications is matched, and interferes with each other when the combination is not the specification.

That is, first, in the type (A), the erroneous coupling prevention ribs 1 are provided on the left and right sides of the lock mechanism 21 of the electric connection box 11A.
5A and 16A, but the right wrong connection prevention rib 16
A is narrowed to the right, and the (A) type electronic unit 1 is placed in the space 18A created by the narrowing.
The erroneous connection preventing rib 17A on the 2A side is fitted.

Next, in the type (B), the electric junction box 1
The right and left locking mechanisms 21 of the lock mechanism 21 of FIG.
16B, the left wrong-connection preventing rib 15B is narrowed to the left, so that the space 18B caused by the narrowing prevents the wrong-connection of the (B) type electronic unit 12B. The rib 17B fits.

Next, in the type (C), the electric connection box 1
Improper connection prevention ribs 15C
Despite the presence of 16C, the left wrong coupling prevention rib 15C is narrowed to the left and narrow, so that the (C) type electronic unit 12C is prevented from being mistakenly coupled to the space 18C caused by the narrow width. The rib 17C fits.

FIG. 1 shows a state in which the components of each specification are combined in an appropriate combination. For example, the electronic unit 12A of the specification (A) is replaced with the electric connection box 11B of the specification (B).
If it tries to assemble, the wrong coupling prevention rib 17A on the electronic unit 11A side will interfere with the wrong coupling prevention rib 16B on the electric connection box 11B side.

Similarly, the electronic unit 12A of the (A) specification
Is to be assembled to the electrical connection box 11B of the specification (C), the wrong connection preventing rib 17A on the electronic unit 11A side is used.
Will interfere with the erroneous coupling prevention rib 16C on the electrical junction box 11C side.

The electronic unit 12B of (B) specification
Is to be assembled to the electrical connection box 11A of the (A) specification or the electrical connection box 11C of the (C) specification, the erroneous coupling prevention rib 17B on the electronic unit 12B side is attached to the electrical connection box 11A.
A, 11C interferes with the erroneous coupling prevention ribs 15A, 15B.

The electronic unit 12C of (C) specification
Is to be assembled into the electrical connection box 11A of the (A) specification or the electrical connection box 11B of the (B) specification, the erroneous coupling preventing rib 17C on the electronic unit 12C side is attached to the electrical connection box 11A.
The ribs A and 11B interfere with the erroneous coupling prevention ribs 16A and 16B.

As described above, the electric connection box 11A,
11B, 11C and electronic units 12A, 12B, 12C
In the case of a wrong combination, incorrect combination can not be performed, so that erroneous combination can be prevented.

In this assembly structure, the erroneous connection preventing ribs 15A, 15B, 15C, 16A, 16B, 16
C, 17A, 17B and 17C are connected to the electric connection boxes 11A and 11
B, 11C and electronic units 12A, 12B, 12C are arranged at positions outside the central region, and in the case of an improper combination, these wrong coupling prevention ribs 15A, 15B, 1
5C, 16A, 16B, 16C, 17A, 17B, 17
Since the Cs interfere with each other, there is no need to restrict the space at all in the central area where the electric components of the electronic units 12A, 12B, and 12C are laid out. That is, the electronic units 12A, 12B, 1
Since there are erroneous coupling prevention ribs 17A, 17B, and 17C in the outer region where the electric components mounted on the 2C substrate are not dense,
The layout of the electric components can be freely determined without any restrictions on the space.

In this assembly structure, the lock mechanism 2
Misconnection prevention ribs 15A, 15B, 15
C, 16A, 16B, 16C, 17A, 17B, 17C
Is arranged, it is possible to reliably prevent erroneous coupling immediately before locking.

[0029]

As described above, according to the first aspect of the present invention, the ribs for preventing erroneous coupling are provided at positions deviated from the central area of the electric connection box and the electronic unit, so that the electric components are laid out. The erroneous coupling can be prevented without restricting the central region to be connected.

According to the second aspect of the present invention, the erroneous connection preventing rib is disposed near the lock mechanism of the electric connection box and the electronic unit, so that the erroneous connection can be reliably prevented immediately before locking. Can be prevented, and excessive locking can be prevented.

[Brief description of the drawings]

FIG. 1 shows an assembly structure according to a first embodiment of the present invention.
FIG. 4 is a partial plan view showing a state in which an electrical junction box and an electronic unit of three specifications (A), (B), and (C) are coupled to each other in an appropriate combination.

FIGS. 2A and 2B show a combination of an electrical junction box and an electronic unit of (B) specification as typical examples, wherein FIG. 2A is a side view and FIG. 2B is a plan view.

FIGS. 3A and 3B are views showing a next assembly stage of FIG. 2, wherein FIG. 3A is a side view and FIG.

FIGS. 4A and 4B are views showing an assembled state of an electric junction box and an electronic unit of (B) specification, wherein FIG. 4A is a side view and FIG.

5A and 5B are explanatory views of a conventional structure for assembling an electric junction box and an electronic unit, wherein FIG. 5A is a side view and FIG. 5B is a plan view.

[Explanation of symbols]

 11A, 11B, 11C Electric connection box 12A, 12B, 12C Electronic unit 15A, 15B, 15C Misconnection prevention rib 16A, 16B, 16C Misconnection prevention rib 17A, 17B, 17C Misconnection prevention rib 21, 22 Lock mechanism

Claims (2)

[Claims] At least one of an electric junction box and an electronic unit, which are combined with each other, does not interfere with a counterpart when they are properly combined, so that the two can be combined. In the structure of assembling an electronic unit to an electrical junction box provided with a mis-coupling preventing portion that makes it impossible to combine the two by interfering with the other party at the time of combination, Misconnection preventing ribs are projected outside the outer peripheral edge of the central region of the box and the electronic unit, respectively, and when the electric connection box and the electronic unit are improperly combined, the incorrect connection prevention rib on the electric connection box side and the electronic unit are provided. A structure for assembling an electronic unit to an electric connection box, wherein the ribs interfere with the misconnection prevention rib on the side. 2. The assembly structure of an electronic unit to an electric junction box according to claim 1, wherein the erroneous coupling preventing rib is arranged near a lock mechanism between the electric junction box and the electronic unit. Characteristic structure of assembling the electronic unit to the electrical junction box.