JPH0363289B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention [Field of Industrial Application] The present invention relates to an electrical junction box having a combined structure, and particularly to a partition wall plate portion, that is, a dash panel portion that isolates the engine room and the interior of the vehicle. Suitable for making electrical wiring lighter and simpler.

Here, the electrical junction box refers to a fuse box, a relay box, a connector box in which desired electrical circuits are integrated, and a connector for connecting to external electrical components such as various load switches and connectors. Refers to devices equipped with terminals and terminals.

[Conventional technology]

In order to simplify the electrical wiring system of automobiles, Japanese Patent Publication No. 57-38457 proposes to install four connector boxes 1, 2, 3, and 4 at appropriate positions in engine compartment A and interior B, respectively, as shown in Figure 4. A distributed arrangement method has been proposed.

In this conventional system, the connector box 1 in the engine compartment A and the connector boxes 2 and 4 in the compartment B are arranged with a partition wall (dash panel) C separating them. Therefore, in order to prevent moisture, toxic gas, noise, etc. from flowing into the room B from the engine room A, it is necessary to install a grommet 5, such as the one disclosed in Japanese Utility Model Publication No. 55-44317, and also the connector boxes 1 and 2. , 4, etc., many electric wires and connectors had to be used, which caused the following problems.

(1) In the process of assembling wire harnesses for automobiles, installing the grommet requires a great deal of effort and time, which impairs work efficiency.

(2) Since a large number of connectors and wires are required for interconnection between connector boxes, the weight and number of parts increase, and the manufacturing cost of the wire harness increases.

(3) Connectors generally have a male terminal 6 and a female terminal 7 inserted into each other as shown in Fig. 5, and in order to increase the mutual contact pressure, the clearance of the insertion part 8 of the female terminal 7 is narrow. Moreover, the connection direction of the male and female terminals is restricted, and as the number of poles increases, a large insertion (removal) force is required for attachment and detachment, resulting in poor workability.

[Problem that the invention seeks to solve]

An object of the present invention is to solve the above-mentioned problems and provide a combined structure type electrical junction box that can be easily connected to grommets or a large number of connectors without the need for electrical wires when electrical wiring is carried out in a bulkhead plate. The purpose of this is to reduce the weight and provide a wire harness with a simplified wiring configuration at a reduced cost.

Structure of the Invention [Means for Solving Problems] The combined structure type electrical junction box of the present invention is composed of a pair of electrical junction boxes facing each other across a hole in a partition plate,
L-shaped connection terminals that are electrically connected to the desired internal circuits are protruded from opposing surfaces of each electrical junction box, and when the pair of electrical junction boxes are fixed to the bulkhead plate, the L-shaped connection It is characterized in that the terminals are electrically connected by elastically contacting each other.

[Effect]

For example, a locking arm that engages with a hole in a bulkhead plate is provided on one side of a pair of electrical junction boxes facing each other, and the locking arm is fixed to one side of the bulkhead plate, and the other electrical junction box is fixed to the other side with screws or the like. do. By this,
Since the holes in the partition plate are closed, there is no need to install grommets as in the conventional case. In addition, the L-shaped connection terminals protruding from the opposing surfaces of the opposing electrical connection boxes are
They come into elastic contact with each other through the holes in the partition plate and are electrically connected, but there is no directional restriction on the connection direction as with conventional male and female terminals. Furthermore, it is not necessary to use a large number of connectors and electric wires as in the conventional method. Therefore, the connection work is extremely simple, and the overall weight of the wire harness is reduced and the wiring form is simplified.

〔Example〕

One embodiment of the present invention will be described based on the drawings. In FIG. 1, 10 and 11 are electrical connection boxes facing each other, with a dash panel C having a hole 12 in between, and the former located on the engine compartment A side. is located on the cabin B side. Electrical connection box 10
An electrical wiring board 13 having a desired circuit pattern such as a printed wiring board, a busbar circuit board, or a thick film board is mounted inside, and a group of connectors 16 containing a large number of male terminals 14 and female terminals 15 is formed on the outside. is,
Electronic components such as external connectors and relay units can be fitted into the connector 16. Although the electrical connection box 11 is not shown, it has a similar configuration.

In the electrical junction box 10 on the side of the engine compartment A, a recess 18 is formed in the bottom plate 17 thereof, that is, the surface facing the electrical junction box 11, and a connecting terminal 19 is formed in the recess 18 to be electrically connected to a desired internal circuit of the electrical wiring board 13. A positioning pin 20 with respect to the electrical connection box 11 is provided in a protruding manner. Further, the bottom plate 17 is provided with a preventive packing 21 surrounding the hole 12, and a waterproof cover 22 is attached to the external connector side.

The connection terminal 19 is, as shown in Fig. 2 A and B,
The contact piece 24 is formed by bending the tip of a wide conductor piece 23 to form an approximately L-shape, and the bending angle of the contact piece 24 with respect to the conductor piece 23 is set slightly larger than 90°.
It has elasticity.

On the other hand, the recess 1 of the bottom plate 17' of the electrical connection box 11
A corresponding connecting terminal 19' having the same shape as the connecting terminal 19 is also provided protruding from the connecting terminal 8'. In addition, the recess 1
8' has a locking arm 25 that engages with the hole 12.
and positioning hole 26 for positioning pin 20
is provided. 27 is an anti-shake member made of an elastic material such as rubber.

Next, the assembly of the opposing electrical connection boxes will be explained.

First, insert the cabin B into hole 12 of the dash panel C.
Insert the locking arm 25 from the side and lock the electrical connection box 11. At this time, since the vibration prevention member 27 is elastically compressed, the electrical connection box 11
is in close contact with panel C, and there is no wobbling or wobbling.

Next, the positioning pin 20 of the electrical connection box 10 is inserted into the positioning hole 26 from the engine compartment A side and fixed with the screw 28 as shown in FIG. 3, and the assembly is completed.

That is, guided by the positioning pin 20, the connection terminal 19 of the electrical connection box 10 comes into elastic contact with the corresponding connection terminal 19' by the contact piece 24,
electrically connected. Further, since the electrical connection box 10 is also elastically adhered to the panel C by the waterproof gasket 21 of the bottom plate 17, no shaking or stiffness occurs.
Furthermore, since the hole 12 in panel C is doubly sealed by the electrical connection boxes 10 and 11, moisture, toxic gas, noise, etc. from the engine compartment A to the cabin B are completely prevented.

In this way, the electrical junction boxes 10 and 11 do not require a large number of connectors or wires as in the past, and are not subject to any restrictions on the direction in which the connecting terminals 19 and 19' are connected. It is extremely easy to assemble, and there is no need to install troublesome grommets.

Effects of the Invention According to the combined structure type electrical junction box of the present invention, conventional grommets, numerous connectors, electric wires, etc. are not required when connecting electrical junction boxes that sandwich the bulkhead plate portion, and assembly and connection work can be determined and simplified. be. As a result, the weight of the entire wire harness can be greatly reduced, and the wire harness can be supplied at a reduced cost as well as a simplified wiring form.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the main parts of an integrated structure type electrical junction box in a separated state showing an embodiment of the present invention, and FIG. FIG. 3 is a cross-sectional view of the main parts of the same assembled state, FIG. 4 is a wiring diagram of a conventional automobile wire harness, and FIG. 5 is a perspective view of conventional female and male terminals. A...engine room, B...cabin (indoor),
C...Dutsche panel (partition board), 10, 11...
...Electrical junction box, 12... Hole, 13... Wiring board, 1
9, 19'... Connection terminal, 20... Positioning pin,
21... Waterproof packing, 25... Locking arm, 26... Positioning hole.

Claims (1)

[Claims] 1. Consisting of a pair of electrical connection boxes facing each other across a hole in a partition plate, each electrical connection box has an L-shaped connection terminal connected to a desired internal circuit on its opposing surface. The combination is characterized in that the L-shaped connection terminals are provided in a protruding manner so that when the pair of electrical connection boxes are fixed to the bulkhead plate, the L-shaped connection terminals come into elastic contact with each other and are electrically connected. Structural electrical junction box. 2. The integrated structure type electrical connection box according to claim 1, wherein a sealing material surrounding the hole in the partition plate is provided on the opposing surface of at least one of the pair of electrical connection boxes. 3. The integrated structure type electrical connection box according to claim 1 or 2, wherein a locking arm that engages with a hole in a partition plate is protruded from the opposing surface of at least one of the pair of electrical connection boxes. 4. The combined structure type according to any one of claims 1 to 3, wherein a positioning pin is protruded from one opposing surface of a pair of electrical connection boxes, and a positioning hole is provided for the positioning pin from the other opposing surface. Electrical connection box.