JPH0127257Y2 - - 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. Then, the ground wires for each electrical component to which each circuit of the wire harness is connected are connected to the ground wire 1 in a multi-branched manner.
Configure a ground circuit using this as the main ground line.

According to the above-described conventional grounding structure, the wires forming the grounding circuit have an extremely large number of connection points, which complicates the wire structure of the wire harness and reduces molding workability, such as requiring labor to connect the wires. There's a problem.

Further, in the assembly line for disposing the wire harness on the vehicle body, it is necessary to tighten and fix the ground terminal 2, and a grounding failure may occur due to a work error such as insufficient tightening. Therefore, in order to prevent the earthing function from deteriorating due to the earthing failure, increasing the number of earthing points is not preferable because the circuit becomes even more complicated.

The purpose of the present invention is to solve the above-mentioned conventional problems, and to provide a new earthing structure that simplifies the earthing circuit, provides good and stable earthing function, and allows easy earthing connection.

That is, the present invention, which achieves the above objects, includes a ground terminal connector that accommodates a terminal of a ground wire pulled out from a wire harness (hereinafter referred to as a ground wire terminal), and a ground terminal connector that locks the ground terminal connector and connects the outer periphery of the wire harness. A metal member having a fixing member that is attached to the ground wire terminal, a male contact portion that connects to the ground wire terminal on one side, and a locking head with an elastic check piece that fits into the mounting hole of the vehicle body on the other side. It consists of a combination with a ground terminal, the ground terminal connector is locked to the fixing member fixed to the outer periphery of the wire harness, and the ground wire terminal in the ground terminal connector and the male contact part of the metal ground terminal are connected. At the same time, the locking head of the metal ground terminal is fitted into the vehicle body mounting hole to install and hold the wire harness in the vehicle body, and at the same time,
It features a structure that forms a ground circuit that connects to the vehicle body.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 4.

The illustrated grounding structure is composed of a combination of a grounding terminal connector 5, a fixing member 6, and a metal grounding terminal 7. A ground wire terminal (not shown) attached to the end of each ground wire 1
is inserted into a separate storage chamber, and a contact portion 12 of a ground terminal 7, which will be described later, is received through the front opening, so that the ground wire terminal and the contact portion 12 are connected. Further, the ground terminal 7 is formed of a conductive metal plate material, and a ground terminal connector 5 is provided on one side of the ground terminal 7.
A large number of plate-shaped male contact parts 12 are arranged in parallel to correspond to the ground wire terminals housed in the board, and an elastic non-return check cut out from the board and integrally formed in the widthwise center of the other side is provided. A one-sided locking head 14 is provided. That is, the locking head 14 connects the ground terminal 7 to the vehicle body 1.
9 is provided with the intention of locking into the mounting hole 20 drilled in
5B, thin plate spring pieces 15A, 15B
are parallel to each other with a deflection gap in between, and have a tapered shape that is folded back at the tip, and have an elastic check piece structure having a locking groove 16 at the end of the folded piece.

That is, the locking head 14 is easily elastically deformed and inserted into the mounting hole 20, and the locking groove 16 is formed on the periphery of the mounting hole 20.
is elastically engaged, so that the ground terminal 7 is engaged with the vehicle body 19 without being easily detached.

On the other hand, the fixing member 6 consists of a main plate part 8 and an upper plate part 9 that intersect in an L shape.
A, 11B are provided in a protruding manner, and a window portion 10 is formed above the main plate portion 8 into which a contact portion 12 of the ground terminal 7 can be loosely inserted. Further, the upper plate portion 9 is provided with a locking hole 17 that receives and engages a locking protrusion 18 on the upper part of the ground terminal connector 5. and,
The fixing member 6 is attached to the wire harness 2 as shown in Figs.
The mounting leg pieces 11A and 11B are attached and fixed to the outer circumference of the wire harness 22 by, for example, tape wrapping 21, and in the gap between the upper plate part 9 and the outer circumference of the wire harness 22,
Insert the ground terminal connector 5, fit the locking protrusion 18 and the locking hole 17, and then connect the ground terminal connector 5.
is configured to be locked to the outer periphery of the wire harness 22.

Then, the wire harness 2 is connected via the fixing member 6.
The earth terminal connector 5 fixed on the outer periphery of the
Its front end faces the window 10 of the fixing member 6, and the ground terminal 7 faces the male contact part 1.
2 is inserted through the window portion 10 and connected to the ground terminal connector 5. The locking head 14 of the ground terminal 7 is attached to a mounting hole 20 drilled at a key point in the vehicle body 19.
When fitted into the locking head 14 with an elastic check piece
is elastically fitted into the mounting hole 20, and the vehicle body 19 and the ground terminal 7 are connected without being easily detached.

In this way, the wire harness 22 is held at a key point on the vehicle body 19 via the fixing member 6 and the ground terminal 7 to adjust the installation posture, and at the same time, the ground wire terminal of the ground wire 1 is connected to the male contact portion 12 of the ground terminal 7. A grounding circuit is formed which connects the locking head 14 to ground the vehicle body.

According to the grounding structure of the present invention having the above configuration, the grounding wire of the wire harness is integrated into the grounding terminal connector 5, and the locking head with the elastic check piece 1
4, the electrical conductivity of the grounding circuit is well and stable, and there is no risk of poor grounding performance as in the conventional structure, and the grounding function can be maintained. It can be stabilized.

On the other hand, in the conventional wire harness, the arrangement structure for attaching the clamp member and holding the wire harness at key points on the vehicle body and the grounding structure shown in Figure 1 are constructed separately, and each requires installation work. According to the above structure, the fixing member 6, which replaces the conventional clamp member, the ground terminal 7, and the ground terminal connector 5 are organically combined, and it is possible to simultaneously maintain the wire harness arrangement and form the ground circuit, thereby improving the wire harness system. It is possible to further simplify the arrangement and improve the workability of the arrangement.

In addition, in the configuration of the present invention described above, the fixing member 6 may be fixed at key points on the outer periphery of the wire harness 22 and may lock the ground terminal connector 5, and its specific shape is not limited to the above-described embodiment. For example, instead of the mounting leg pieces 11A and 11B, it may be fixed by a band body that hugs the outer periphery of the wire harness 22, or the upper plate part 9 may be omitted or modified,
Various modifications can be made, such as providing a hook portion or the like on the main plate portion 8 and locking and fixing the ground terminal connector 5 to the hook portion.

As described above, the present invention solves the conventional difficulties and provides a grounding structure that provides stable good grounding performance and has useful effects such as simplifying the wiring harness and improving installation workability. be.

[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 an embodiment of the present invention, Fig. 3: A plan view showing the usage state of the embodiment of Fig. 2. FIG. 4: Side sectional view showing the usage state of the embodiment of FIG. 2. Main symbols: 1...Earth wire, 5...Earth terminal connector, 6...Fixing member, 7...Earth terminal,
8...Main plate part, 9...Top plate part, 10...Window part, 1
1A, 11B... Mounting leg piece, 12... Male contact portion, 14... Locking head, 15A, 15B... Thin plate spring piece, 16... Locking groove, 17... Locking hole, 18...
...Latching protrusion, 19...Vehicle body, 20...Mounting hole, 2
1... Tape winding, 22... Wire harness.

Claims (1)

[Scope of utility model registration request] A ground terminal connector for collectively accommodating ground wires, a fixing member that is attached to the outer periphery of the wire harness and that locks the ground terminal connector, and a male contact portion that connects to the ground terminal connector on one side are arranged side by side. , and a metal ground terminal having a locking head with an elastic check piece on the other side, the fixing member is fixed to the outer periphery of the wire harness, and the ground terminal connector is fixed to the fixing member, Furthermore, the grounding structure for a wire harness is characterized in that the grounding terminal and the grounding terminal connector are connected to each other, and the locking head is fitted and locked into a mounting hole of a vehicle body to form a grounding circuit.