Body earth structure for vehicle and body earth path forming method
A body earth structure for a vehicle includes a bolt of which a head portion is swage-joined to an aluminum vehicle body panel. The bolt is provided to fasten an earth terminal to the vehicle. The bolt includes a projection that protrudes toward the vehicle body panel, on a facing surface of the head portion of the bolt. The facing surface is provided to face the vehicle body panel.
1. A body earth structure for a vehicle, the body earth structure comprising a bolt of which a head portion is swage-joined to an aluminum vehicle body panel, the bolt being provided to fasten an earth terminal to the vehicle,
wherein the bolt includes a projection that protrudes toward the vehicle body panel, on a facing surface of the head portion of the bolt, the facing surface being provided to face the vehicle body panel.
2. The body earth structure according to claim 1 , wherein:
the head portion of the bolt is provided with
a protruding portion provided by an outer edge of the head portion protruding in a direction of the facing surface, and
a recessed portion that is a region positioned radially inward of the protruding portion and is approximately circular as seen in a plan view;
an outer circumferential side surface of the protruding portion is outwardly inclined toward the facing surface; and
an inner circumferential side surface of the protruding portion is outwardly inclined toward the recessed portion.
3. The body earth structure according to claim 1 , wherein the bolt is subjected to a rustproofing treatment.
4. A body earth structure for a vehicle, the body earth structure comprising:
a bolt of which a head portion is swage-joined to an aluminum vehicle body panel, the bolt being provided to fasten an earth terminal to the vehicle and including a projection that protrudes toward the vehicle body panel, on a facing surface of the head portion of the bolt, the facing surface being provided to face the vehicle body panel; and
a conductive adhesive agent interposed between the facing surface of the head portion of the bolt and the vehicle body panel.
5. The body earth structure according to claim 4 , wherein:
the head portion of the bolt is provided with
a protruding portion provided by an outer edge of the head portion protruding in a direction of the facing surface, and
a recessed portion that is a region positioned radially inward of the protruding portion and is approximately circular as seen in a plan view;
an outer circumferential side surface of the protruding portion is outwardly inclined toward the facing surface; and
an inner circumferential side surface of the protruding portion is outwardly inclined toward the recessed portion.
6. The body earth structure according to claim 4 , wherein the bolt is subjected to a rustproofing treatment.