JP2006351205A - Earth terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earth terminal surely detachable only by pulling an earth wire in recovering an automobile body and allowing recovery work to be carried out without leaving a part thereof on the automobile body side. <P>SOLUTION: This earth terminal 21 is connected to an end of an earth wire 40 incorporated in a wire harness installed in an automobile and fixed to the automobile body by a fixing member 41. In the earth terminal 21, a wire holding part 23 bent for holding a terminal part of the earth wire 40 is formed at one end of the earth terminal 21; a fixing member fastening part 22 provided with an insertion hole 24 allowing insertion of the fixing member 41 into the inside thereof by bending a plate-like tip part 22A having a nearly J-shaped form in a plan view so as to overlap with a base end 22B is formed at the other end thereof; and the fixing member fastening part 22 is formed integrally with the wire holding part 23 through a connection part 26 on the base end 22B side. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement in an earth terminal used for fixing an end of an earth wire incorporated in a wire harness to a vehicle body.

  Conventionally, an electric wire for grounding is incorporated in a wire harness routed in an automobile, and the end of the electric wire for earthing is fixed to a predetermined position of a vehicle body by a fixing member such as a bolt via an earth terminal. Yes.

Recently, the effective use of resources has been screamed in the growing awareness of environmental protection, and recycling of the parts that make up automobiles has become a major issue even in the automobile industry.
In the case of automobiles, not only iron-based materials constituting the vehicle body, but also wire harnesses in which an insulating material is coated on a copper-based conductive material have become a major target for recycling.
Specifically, how easily the wire harness can be removed from the vehicle body, and the copper-based conductive material constituting the wire harness and the iron-based material constituting the vehicle body described above can be reliably separated, that is, the wire Whether the harness and its fragments can be removed without leaving the vehicle body is a major issue.

An example of an approach to this problem is disclosed as a prior art in Patent Document 1 as an improvement of the ground terminal. This ground terminal will be described with reference to FIG. 3A is a plan view of the ground terminal, and FIG. 3B is a side view thereof.
In the case of this ground terminal 21, a wire gripping portion 23 that is bent to grip a terminal portion of a grounding wire 40 (hereinafter simply referred to as a ground wire) is formed at one end, and a fixing member such as a bolt is formed at the other end. A fixing member fastening portion 22 having an insertion hole 24 to be inserted is formed, and the fixing member fastening portion 22 and the wire gripping portion 23 have a V groove 35 as an easily cut portion in the width direction. Are formed integrally.
The electric wire gripping portion 23 is provided with a front crimp fixing portion 29 and a rear crimp fixing portion 30. The former is a portion of the conductor 31 of the ground wire 40 and the latter is a portion of the insulating coating 32 of the ground wire 40. Are fixed by pressure bonding.

When the earth wire 40 with the earth terminal thus formed is collected, if the earth wire 40 connected to the earth terminal 21 is pulled, the earth terminal 21 can be easily cut by the V groove 35, and the earth wire 40. Can be easily recovered, that is, it can be recovered simply by pulling the ground wire 40 without loosening a fixing member such as a bolt.
However, in the case of this method, the fixing member fastening portion 22 located on the tip side of the V groove 35 described above remains on the vehicle body side together with the fixing member such as a bolt. That is, there is a problem that copper-based materials are mixed into iron-based materials.

Therefore, Patent Document 1 proposes a ground terminal as shown in FIGS. 4 and 5 in order to solve the above problem. 4A is a plan view of the improved ground terminal, and FIG. 4B is a side view thereof. FIG. 5 is a side view showing a state in which the ground terminal shown in FIG. 4 is fixed to the vehicle body with bolts.
As shown in FIGS. 4 and 5, the ground terminal 21 is formed by punching a plate-like body made of a conductive material, specifically, a copper alloy material, into a predetermined shape, It is manufactured by bending or folding a part of it.
The ground terminal 21 includes a fixing member fastening portion 22 that is fastened to the vehicle body mainly by a fixing member 41 such as a bolt, a wire gripping portion 23 that connects the ground wire 40, and the fixing member fastening portion 22 and the wire gripping portion. It has the connection part 26 which connects the part 23. FIG.

  Here, the fixing member fastening portion 22 is provided with an opening hole 24B for allowing the fixing member 41 such as a bolt to pass therethrough. The opening hole 24B literally has a shape in which a part of the hole is opened to the outside, more specifically, a part of the hole is opened on the tip end side of the ground terminal 21, and the ground terminal 21 is Even if the ground terminal 21 is fixed to the vehicle body 50, when the ground terminal 21 is pulled strongly through the ground wire 40 toward the electric wire gripping portion 23, the ground terminal 21 comes out of the bolt 41 through the opening of the opening hole 24B. ing.

  The fixing member fastening portion 22 is composed of an upper portion 22A and a lower portion 22B formed by folding a plate-like body into two at the folded-back portion 25. Then, on the side of the electric wire gripping portion 23 of the upper portion 22A, a part of the portion is cut off, and on both sides, the plate-like body is bent downward in a mountain fold, and further folded so as to cover the side surface of the lower portion 22B. As a result, ribs 27A and 27B are formed, respectively.

On the other hand, the wire gripping portion 23 is provided with a front crimping fixing portion 29 and a rear crimping fixing portion 30 similar to those shown in FIG. 3, and the conductor 31 portion of the ground wire 40 is crimped in the former. In the latter case, the portion of the insulation coating 32 of the ground wire 40 is crimped and connected.
As shown in FIG. 5, the ground terminal 21 thus formed is fixed to a predetermined position of the vehicle body 50 via a washer 42 by a fixing member 41 such as a bolt.

  When the automobile is dismantled, when a hook of a lifting device such as a crane is hooked on the ground wire 40 side and pulled in the direction of arrow P, the ribs 27A and 27B firmly fix the lower side portion 22B of the fixing member fastening portion 22. As a result, the stress concentrates on the fixing member fastening portion 22 side, and the front of the opening hole 24B is opened, so that the ground terminal 21 is a fixing member such as a bolt. It can be recovered without leaving the terminal 41 and leaving a part of the ground terminal 21 on the fixing member 41 side.

JP 2003-178825 A

  However, when fixing the ground terminal 21 to the vehicle body 50 so that the fixing member 41 such as a bolt fixing the ground terminal 21 is not loosened due to vibration or the like during traveling of the automobile, only the fixing member 41 such as a bolt is used. The earth terminal 21 is usually tightened via a washer 42 such as a spring washer. Therefore, the earth wire 40 is actually pulled by the acting force from the washer 42 to the earth terminal 21. There is a problem in that the ground terminal 21 is not necessarily detached from the fixing member 41 simply by merely.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a grounding terminal that can be removed by simply pulling a grounding wire during vehicle body recovery and can be recovered without leaving a part thereof on the vehicle body side.

  In order to achieve the above object, the ground terminal according to claim 1 of the present invention is connected to a terminal of a ground wire incorporated in a wire harness arranged in an automobile, and is fixed to the vehicle body by a fixing member. In this case, an end of the ground terminal is formed with a wire gripping portion that is bent to grip the end portion of the grounding wire, and the other end is based on a tip end portion of a plate-like body having a substantially J-shaped plane. A fixing member fastening portion that is bent so as to overlap the end portion and has an insertion hole through which the fixing member can be inserted is formed, and the fixing member fastening portion is formed on the base end side of the electric wire. It is characterized by being formed integrally through a gripping part and a connecting part.

According to the ground terminal of claim 1, the fixing member is bent inwardly at one end thereof so that the front end portion of the substantially J-shaped plate-like body overlaps the base end portion. Since a fixing member fastening portion provided with an insertion hole through which a bolt can be inserted is formed, when a fixing member such as a bolt is inserted into the insertion hole and is tightened to fix the ground terminal to the vehicle body, the bolt The base end portion and the distal end portion of the fixing member fastening portion of the ground terminal are tightened between the lower surface of the head and the vehicle body surface.
Therefore, when the wire harness side including the ground wire is pulled when the vehicle body is disassembled, the overlapping of the portion where the proximal end portion and the distal end portion of the fixing member fastening portion overlap is released, and the distal end portion of the fixing member fastening portion is fixed. It will come off from the bolt that is a member. As a result, a gap is formed between the lower surface of the head of the bolt and the surface of the vehicle body, and the tightening force of the bolt that has tightened the ground terminal is loosened, and the ground terminal is surely detached from the bolt.

  As described above, according to the present invention, it is possible to provide a ground terminal that can be reliably removed by simply pulling the ground wire during vehicle body recovery and can be recovered without leaving part of the ground wire on the vehicle body side.

Hereinafter, the ground terminal of the present invention will be described in detail with reference to the drawings.
1 and 2 show an embodiment of the ground terminal of the present invention. FIG. 1 is a plan view of a plate-shaped body of a predetermined shape punched from a copper alloy plate to obtain the ground wire of the present invention. FIG. 2 is a perspective view showing a state in which a ground wire is attached to the one shown in FIG.

The ground terminal 21 of the present invention shown in FIG. 1 and FIG. 2 is obtained by punching a plate-like body having a shape as shown in FIG. 1 from a plate made of a conductive metal material made of copper alloy. The portion for forming the fixing member fastening portion 22 is formed, and the portion for forming the wire gripping portion 23 is formed on the rear end side, and the portion for forming the fixing member fastening portion 22 is on the base end portion 22B side. And a portion forming the electric wire gripping portion 23 are integrally formed through the connecting portion 26.
As shown in FIG. 2, the electric wire gripping portion 23 is provided with a front crimping fixing portion 29 and a rear crimping fixing portion 30 as in the prior art, and the former is caulking the conductor 31 portion of the ground wire 40 In the latter case, the portion of the insulation coating 32 of the ground wire 40 is crimped and connected.
Here, reference numeral 45 is an uneven valley or mountain formed in a straight line shape in the terminal width direction so that the conductor 31 of the ground wire 40 can be electrically and reliably connected, and is provided if necessary.

The ground terminal 21 of the present invention is characterized by the fixing member fastening portion 22. Specifically, as shown in FIG. 1, the fixing member fastening portion 22 is punched into a substantially J-shaped plane, in other words, a fishhook-like shape, and inside the fixing member fastening portion 22. The fixing member mounting opening hole 24A formed is in a state in which a part of the hole is opened toward the outside on the connecting portion 26 side of the ground terminal 21.
1 is used as the grounding terminal 21 as shown in FIG. 2, the wire gripping portion 23 side as shown in FIG. Similarly, the ground wire 40 is fixed by crimping or the like.
On the other hand, with respect to the fixing member fastening portion 22, the tip portion 22 </ b> A, that is, the portion corresponding to the tip portion of the needle in the case of a fishing hook, the base end portion 22 </ b> B of the fixing member fastening portion 22 as shown in FIG. 2. And an insertion hole 24 through which a fixing member such as a bolt can be inserted is formed.

  Specifically, when the ground terminal 21 shown in FIG. 2 is fixed to a predetermined portion of the vehicle body with a bolt, the bolt is passed through the insertion hole 24, and the front end portion 22A of the fixing member fastening portion 22 is connected to the lower surface of the bolt head. The ground terminal 21 may be fixed to the vehicle body by tightening a bolt so as to suppress a portion where the base end portion 22B overlaps. If necessary, a washer such as a spring washer may be used. However, since the portion where the distal end portion 22A and the base end portion 22B of the fixing member fastening portion 22 described above serves as a spring washer, FIG. The washer 42 may not be used as in the conventional ground terminal 21 shown.

When the ground terminal 21 fixed at a predetermined position of the vehicle body is separated from the vehicle body and collected when the vehicle body is disassembled, the ground wire 40 (wire harness) connected to the wire gripping portion 23 of the ground terminal 21 is used. If the hook or the like is hooked and pulled, the fixing member fastening portion 22 of the ground terminal 21 is pulled. At this time, the distal end portion 22A of the fixing member fastening portion 22 slides down from the base end portion 22B, and the overlapping portion is eliminated. Is done.
As a result, a gap is formed between the fixing member fastening portion 22 and the bolt by the thickness of the tip portion 22A, and the portion of the fixing member fastening portion 22 is opened by the tightening force of the bolt. When the wire 40 is pulled, the distal end portion 22A of the fixing member fastening portion 22 is extended, and the ground terminal 21 is reliably removed from the bolt.

  As described above, when the ground terminal 21 of the present invention is used, the wire harness including the ground wire 40 can be collected very easily and reliably when the vehicle body is disassembled. Moreover, since part of the ground terminal 21 does not remain in the bolt portion, the copper material on the wire harness side is not mixed into the iron-based material on the vehicle body side. Even if the tip 22A of the fixing member fastening portion 22 is partially cut off at worst, as described above, there is a gap between the bolt and the fixing member fastening portion 22 of the ground terminal 21, and the bolt already has Since the tightening force has been lost, the broken part does not remain between the bolts and falls away from the vehicle body. Therefore, also in this case, the vehicle body side and the ground terminal 21 are surely separated, and the copper-based material is not mixed in the iron-based material.

  Further, as described above, in the case of the ground terminal of the present invention, the portion where the distal end portion 22A and the base end portion 22B of the fixing member fastening portion 22 overlap functions as a spring washer with respect to the bolt. Not necessary. In this case, there is an advantage that the number of necessary parts is small when the ground terminal 21 is fixed to the vehicle body.

  As described above, according to the ground terminal of the present invention, it is possible to perform the recovery operation reliably by simply pulling the ground wire during recovery of the vehicle body and without leaving a part of the ground terminal on the vehicle body side.

1 shows an embodiment of a ground terminal of the present invention, and is a plan view of a plate-like body punched out to obtain a ground terminal of the present invention. It is a perspective view which shows the state which connected the earth wire to the earth terminal of this invention. An example of the conventional earthing terminal is shown, (a) is a top view, (b) is a side view. It shows another conventional ground terminal, (a) is a plan view, (b) is a side view. It is a side view which shows the state which actually mounted | wore the vehicle body with the conventional earth terminal shown in FIG.

Explanation of symbols

21 ground terminal 22 fixing member fastening portion 22A fixing member fastening portion distal end portion 22B fixing member fastening portion proximal end portion 23 electric wire gripping portion 24 insertion hole 24A fixing member attaching opening hole 40 ground wire

Claims (1)

  An earth terminal connected to the end of an earth wire incorporated in a wire harness routed in an automobile and fixed to a vehicle body by a fixing member. The end of the earth wire is held at one end of the earth terminal. An electric wire gripping part that can be bent is formed, and the other end is bent so that the front end of the substantially J-shaped plate-like body overlaps the base end, and the fixing member can be inserted inside A fixing member fastening portion provided with a through hole is formed, and the fixing member fastening portion is formed integrally on the base end side via the wire gripping portion and the connecting portion. And ground terminal.

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