JP2554076Y2 - Electrical junction box - 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 junction box used for an automobile or the like.

[0002]

2. Description of the Related Art A conventional electric junction box is shown in FIGS.
Conventionally, as shown in FIG. 7, the electric connection box 50 is configured by electrically and mechanically connecting an electronic unit 52 to a connection box main body 51. The electronic unit 52 is shown in FIG.
As can be seen from FIG. 9 schematically disassembled, a printed circuit board 54 having various electronic components and a male connector 53 is firmly held by a cover 57 including a cover body 55 and a back cover 56. You. Electrical junction box 50
Connects the electronic unit 52, that is, the male connector 53 of the printed circuit board 54, to the female connector 59 provided on the connection box main body 51. At this time, the peripheral wall of the electronic unit or cover 57 and the upright wall of the connection box main body 51 are fitted. As a result, both are electrically and mechanically connected to form an assembly.

The above-mentioned male connector 53 and female connector 59 may be interchanged with each other.

[0004] Further, in order to prevent the electric junction box 50 from coming off after assembly, the lock insertion part 60 is connected to the electronic unit 5.
The second cover 57 is inserted into a lock receiving portion 61 provided on the connection box main body 51 and locked.

In FIGS. 7 and 8, reference numeral 62 denotes a fuse box, 63 denotes a laminated bus bar wiring board accommodated in the connection box main body 51, and 64 denotes a male tab terminal of a bus bar protruding into the female connector (actually). No. 1-1101112).

[0006]

However, in the conventional electric connection box 50, the electronic unit 52 has a male connector 53.
Is tightly held by the cover 57 so that the male connector 53 is connected to the female connector 5.
9, the male unit 53 is connected to the electronic unit 52, that is, a part of the peripheral wall of the cover body 55 (indicated by A in FIG. 8) if the male connector 53 is shifted in the direction of arrow X in FIG. A part of the upright wall of the box body 51 (indicated by B in FIG. 8) interferes,
This causes a problem that the connection cannot be made.

[0007] This can be said to be an unavoidable situation in the case where the electrical junction box is manufactured as a product, because the electronic unit and the junction box body must be electrically and mechanically joined together.

[0008] In view of such circumstances, an object of the present invention is to provide an electric junction box capable of avoiding the above-mentioned inconvenience in which connection is impossible.

[0009]

According to the present invention, in order to achieve the above object, a cover body including a bottom wall and a peripheral wall, a printed board housed in the cover body, and connected to the printed board. An electrical connection box comprising: an electronic unit having a connector; and a connection box main body having the electronic unit fixed on an upper surface and having a mating connector connected to the connector on the upper surface, wherein the cover main body is provided. A stepped bracket provided inside the peripheral wall of the connection box, the printed circuit board being mounted on the connection box main body so as to be movable in any peripheral direction within one plane at a predetermined position from the upper surface of the connection box main body, and the cover main body And a resilient member provided inside the peripheral wall of the cover member to bias and hold the printed circuit board in the cover main body to a proper position in the one plane.

[0010]

When the electronic unit is connected to the upper surface of the connection box main body, even when the connector of the printed circuit board is attached to the cover main body at a position displaced in either direction in the plane, the fitting around the both is possible. At the same time, the printed board and the connector integrated with the printed board move in the opposite direction while conforming against the elastic member, so that the connector can be easily connected to the mating connector on the connection box body side. The printed circuit board is placed on a stepped bracket in the cover main body, and is urged to a proper position by an elastic member to be held.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. First, the configuration will be described. The electric connection box 1 includes an electronic unit 9 and a connection box main body 2. The electronic unit 9 is configured by holding a printed circuit board 3 having electronic components 11 and 12 and a male connector 7 by a cover 4 including a back cover 5 and a cover body 6 as described later. The cover body 6 is provided with a total of four stepped brackets 13 for mounting the printed circuit board 3 on the four sides of the rectangular inner surface. A total of eight hooks (elastic members) 10 are set in opposite directions, two on each side, and the printed circuit board 3 is connected to each of the arrows Z (see FIG. 3) in the horizontal plane P (see FIG. 2) in FIG. It is provided integrally so that it can move in the direction. In other words, the four sides of the printed circuit board 3 are supported by the hooks 10 in a horizontal plane including the arrow Z so that the displacement of the dimension D can be performed. This is performed by inserting and supporting the printed circuit board 3 placed on the lower stage from above and below by the upper stage of the stepped bracket 13 and the back cover 5 on the upper edge of the cover body 6. The bottom plate 14 of the cover body 6 is provided with a hole 15 into which the outline of the female connector 8 of the connection box body 1 can be inserted. The connection box body 2 is a bottom plate 14 of the cover body 6.
In addition to the female connector 8 protruding from an upper surface (a plane which is substantially parallel to the horizontal plane P at the reference plane) which comes into contact with the outer peripheral wall 17 of the cover body 6, there are four standing walls 18 fitted on the peripheral wall 17 of the cover body 6. In FIG. 2, 19 is a fuse box, 23 is a bus bar wiring board housed in the connection box main body 2, and 24 is a male tab terminal of a bus bar protruding into the female connector.

In FIG. 1, reference numeral 20 denotes a lock insertion portion provided on the cover main body 6, and reference numeral 21 denotes a lock receiving portion provided on the connection box main body 2.

Next, the operation of the above embodiment will be described. The printed circuit board 3 is placed under the stepped bracket 13 of the cover body 6 with the male connector 7 or the like facing downward, and at this time, four sides are supported by the hooks 10. next,
The back cover 5 is placed on the upper step of the stepped bracket 13 and the upper edge of the cover body 6, and the printed circuit board 3 is inserted from above and below so as to cover the open upper part of the cover body 6, thereby forming the cover 4. The electronic unit 9 is configured by incorporating electronic components and the like in the cover 4.

Next, the electronic unit 9 is connected to the connection box main body 2.
The electronic unit 9, that is, the peripheral wall 17 of the cover body 6 is fitted into the upright wall 18 of the connection box body 2, and the bottom plate 14 is connected to the connection box body as a reference plane. 2 until it touches the upper surface 16. At this time, the outline of the female connector 8 enters the hole 15 of the bottom plate 14, and the male connector 7 and the female connector 8 are not connected.
In this case, even if the male connector 7 is displaced in the horizontal plane P, the printed circuit board 3 integrated with the male connector 7 is supported by the elastic hooks 10, so that the male connector 7 resists the elasticity. Is displaced while conforming to a normal position where the connector is coupled to the female connector 8, and the connectors are coupled to each other. That is, the electrical connection box 1 electrically connected by the connector connection and mechanically connected by the fitting connection of the peripheral side is completed.

[0015] Thus, it is possible to obtain an electrical junction box with improved reliability, avoiding incomplete coupling. The combined electrical junction box 1 is securely held because the electronic components in the electronic unit 9 are integrated with the printed circuit board 3 held by the elastic urging force of the hook 10. .

FIGS. 5 and 6 show another embodiment. In this embodiment, a band-shaped rubber piece (elastic member) 22 is fitted in a space of a portion having a dimension D as a margin of displacement of the printed circuit board 3. This embodiment operates similarly to the previous embodiment.

The male connector 7 and the female connector 8 in the above embodiment may be interchanged with each other.

[0018]

As described above, according to the present invention, an incomplete connection between the electronic unit and the junction box body is eliminated, and an electrical junction box with improved reliability can be obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along line II-II of FIG. 1, showing an electronic unit integrally formed.

FIG. 3 is a perspective view showing a state in which the printed circuit board according to the embodiment of FIG. 1 is installed in a cover main body.

FIG. 4 is an enlarged plan view of an IV section in FIG. 3;

FIG. 5 is a sectional view of another embodiment of the present invention, corresponding to FIG. 2;

FIG. 6 is an enlarged view of a portion VI in FIG. 5;

FIG. 7 is a perspective view showing a state in which a conventional electronic unit and a connection box main body are connected to each other.

8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is an exploded perspective view schematically illustrating the electronic unit of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric connection box 2 Connection box main body 3 Printed circuit board 4 Cover 5 Back cover 6 Cover main body 7 Male connector 8 Female connector 9 Electronic unit 10 Elastic member (hook) 11 Electronic component 12 Electronic component 13 Stepped bracket 14 Bottom plate 15 Hole 16 Top surface (Reference surface) 17 Peripheral wall 18 Standing wall 19 Fuse box 20 Lock insertion part 21 Lock receiver 22 Elastic member (band-shaped rubber piece)

Claims (1)

(57) [Scope of request for utility model registration] 1. An electronic unit comprising: a cover body including a bottom wall and a peripheral wall; a printed circuit board housed in the cover body; and a connector connected to the printed circuit board; A connection box body fixed and provided with a mating connector connected to the connector on the upper surface thereof, wherein the printed circuit board is provided inside a peripheral wall of the cover body and the printed circuit board is connected to the connection box body. A stepped bracket movably mounted in any one of the directions within a plane at a predetermined position from the upper surface of the box body, and the printed circuit board provided inside a peripheral wall of the cover body to cover the printed circuit board And an elastic member for urging and holding the member at a proper position in the one plane.