JPH0127564Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a grounding structure for a wire harness installed in an automobile.

To ground the wire harness, as shown in Figure 1, a ground wire 1 is drawn out from the bundle of wires, a plate-shaped ground terminal 2 is attached to the end of the wire, and the ground terminal 2 is attached to the vehicle body with a bolt 3. Tighten and ground the vehicle body.

The ground wire 1 is connected to a multi-branched ground wire for each electrical component to which each circuit of the wire harness is connected, forming a ground circuit using the ground wire 1 as the main ground wire.

According to the conventional earthing structure described above, the electric wire forming the earthing circuit has many branch wires and has an extremely large number of connection points, which complicates the electric wire configuration of the wire harness and requires time and effort to connect the electric wires. There is a problem that the molding workability of the wire harness is reduced.

The purpose of the present invention is to solve the above-mentioned problems with the conventional method, by concentrating the ground wires and accommodating them in the connector.
To provide a new ground structure that allows easy ground connection and does not require branch connection of a ground wire.

That is, the present invention utilizes a molded protector for the wire harness that is used to accommodate the wire harness and adjust the installation posture at the corner or curved portion of the vehicle body when the wire harness is installed on the vehicle body. The structure is such that a copper foil pattern part for a ground circuit is formed on the molded protector, and a ground terminal connector that centrally accommodates the ground wire of the wire harness is inserted into the copper foil pattern part, and the ground terminal is connected to the molded protector. The present invention is characterized by a structure in which the copper foil pattern portion is electrically connected, the molded protector is attached and fixed to the vehicle body, and the copper foil pattern portion and the vehicle body are connected to form a ground circuit.

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. In the figure, the molded protector 4 is a groove-shaped body with a U-shaped cross section made of a thin resin plate, and is curved to follow the shape of the vehicle body to which it is attached.
is inserted and fixed at key points on the vehicle body. The wire harness 16 is housed in the groove 6, and the wire harness 16 is configured to be arranged and held.

The above molded protector 4 has a copper foil pattern portion 8 welded and formed on the mounting portion 5 and the outer surface of the side wall near the mounting portion 5. That is, the copper foil pattern section 8 consists of a contact section 10 that is formed on the outer surface of the side wall and branches for each ground circuit, and a conductive section 11 that brings together the rear end of the contact section 10 and leads it to the top surface of the mounting section 5. It's on. The conductive part 11 is formed to surround the periphery of the mounting bolt hole 15, and when the mounting part 5 is tightened with the mounting bolt 14, the conductive part 11 and the mounting part 5 are fixed to the vehicle body via the bolt 14. is designed to conduct.

Further, on both sides of the front end portion of the contact portion 10, connector insertion portions 9 formed of a pair of opposing hooks are formed, and a ground terminal connector, which will be described later, is inserted and fixed into the connector insertion portion 9. There is.

On the other hand, the ground wires 1 of the wiring circuit of the wire harness 16 are pulled out collectively near the connector insertion portion 9, and a ground terminal 12 having an elastic contact portion 13 is attached to the end thereof. It is accommodated in the ground terminal connector 7. Then, when the ground terminal connector 7 is inserted into the connector insertion part 9 in the direction of the arrow shown in the figure, the earth terminal connector 7 is held in the connector insertion part 9 without being easily detached, and the earth terminal 12 Elastic contact part 13
are in elastic contact with the contact portions 10 of the corresponding copper foil pattern portions 8, so that the earth terminal 12 and the copper foil pattern portions 8 are electrically connected.

The earthing structure of the present invention having the above configuration includes a copper foil pattern portion 8 for an earthing circuit provided on the side wall portion of the molded protector 4 which becomes a dead space, and
The ground wires 1 of the wire harness 16 are collectively housed in a single ground terminal connector 7, and the connector 7 is simply inserted into the connector insertion part 9 of the copper foil pattern part 8, and the molded protector 4 is attached to the vehicle body. When the wire harness 16 is attached and fixed to the wire harness 16, the arrangement posture of the wire harness 16 is adjusted, and at the same time, a ground circuit for the wire harness is formed.

From the above, according to the grounding structure of the present invention, the grounding circuit in which a large number of grounding branch wires are connected to the grounding main line in multiple branches as in the conventional structure is eliminated, so the wire configuration of the wire harness is further simplified, and
Work efficiency is improved by eliminating the work of making various connections.

Furthermore, since the installation work of the molded protector 4 and the installation work of the ground terminal 2, which were conventionally performed separately, can be accomplished only by the installation work of the molded protector 4, the workability of arranging the wire harness can be improved. I can do it.

As described above, the present invention provides a useful grounding structure that contributes to simplifying the wiring harness system and improving workability.

[Brief explanation of the drawing]

Fig. 1: A perspective view showing the grounding structure of a conventional wire harness, Fig. 2: A perspective view showing the grounding structure of a wire harness according to an embodiment of the present invention, Fig. 3: Fig. 2
FIG. 3 is a cross-sectional view showing the insertion state of the ground terminal connector and the connector insertion portion in the illustrated embodiment. Main symbols: 1: Earth wire, 2: Earth terminal,
4: Molded protector, 5: Mounting section, 7: Earth terminal connector, 8: Copper foil pattern section, 9: Connector insertion section, 10: Contact section, 11: Continuity section, 12: Earth terminal, 13: Elastic contact section , 14: Mounting bolt, 15: Mounting bolt hole, 16: Wire harness.

Claims (1)

[Scope of utility model registration request] A copper foil pattern portion for a ground circuit is formed on the outer surface of the side wall of the molded protector, and the copper foil pattern portion is guided to the upper surface of the mounting piece of the molded protector and is formed including the periphery of the mounting bolt hole. , a connector insertion portion is provided on the outer surface of the side wall, and further, the ground wire of the wire harness accommodated in the molded protector is collectively accommodated in a ground terminal connector, and the ground terminal connector is connected to the connector. 1. A wire harness grounding structure, characterized in that the wire harness is inserted into an insertion section, the grounding wire is electrically connected to the copper foil pattern section, and the grounding of a vehicle body is carried out.