Patent ID: 11890694
Assignee: NIPPON STEEL CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B  C  F | IPC B  C  F

Claim 0:
1. A resistance spot welding apparatus comprising:
a first rod-shaped electrode body,
a second rod-shaped electrode body,
a first ring-shaped member,
a second ring-shaped member,
a first compression coil spring,
a second compression coil spring,
a first holder, and
a second holder, wherein
the first rod-shaped electrode body and the second rod-shaped electrode body are arranged facing each other,
the first ring-shaped member and the second ring-shaped member are arranged facing each other,
the first holder is fixed to the first rod-shaped electrode body on a side opposite to the second rod-shaped electrode body and the first holder is mounted on a spot welding gun,
the second holder is fixed to the second rod-shaped electrode body on a side opposite to the first rod-shaped electrode body and the second holder is mounted on a spot welding gun,
the first rod-shaped electrode body is inserted into a through hole of the first ring-shaped member,
the first compression coil spring is connected between the first ring-shaped member on a side opposite to the second rod-shaped electrode body and the first holder,
the first rod-shaped electrode body and the first ring-shaped member are not electrically connected each other,
the second rod-shaped electrode body is inserted into a through hole of the second ring-shaped member,
the second compression coil spring is connected between the second ring-shaped member on a side opposite to the first rod-shaped electrode body and the second holder, and
the second rod-shaped electrode body and the second ring-shaped member are not electrically connected each other.