Electrical conduction mechanism

An electrical conduction mechanism which conducts electricity to a bit of a sheet-metal puller, and which is equipped with a first manipulating means provided with a bit which is disposed in a distal end portion of a shaft and which is weldable on a sheet-metal face, a supporting portion for supporting said first manipulating means, a second manipulating means for pulling up said first manipulating means, and a leg body for supporting said second manipulating means, comprising

• an electrical-conduction portion main body which is formed with a conductive member, in the center of which a first through-hole to be inserted through by said shaft is formed, and in which a second through-hole communicating with said first through-hole is formed in a direction perpendicular to a direction in which said first through-hole is formed;
• and
• an electrical-conduction element disposed in said second through-hole;
• wherein said electrical-conduction element is configured to include an electrical-conduction chip abutting on said shaft, and a coil spring biasing said electrical-conduction chip toward said shaft, so that current is supplied to said shaft through said electrical-conduction chip to conduct electricity to said bit.

An electrical conduction mechanism which conducts electricity to a bit of a sheet-metal puller, and which is equipped with a shaft, a first manipulating means provided with a bit which is disposed in a distal end portion of said shaft and which is weldable on a sheet-metal face, a second manipulating means which is provided with a supporting portion for supporting said first manipulating means and which pulls up said first manipulating means manually, and a leg body for supporting said second manipulating means, comprising:

• an electrical-conduction portion main body which is formed with a conductive member, in said center of which a first through-hole to be inserted through by said shaft is formed, and in which a second through-hole communicating with said first through-hole is formed in a direction perpendicular to a direction in which said first through-hole is formed;
• and
• an electrical-conduction element disposed in said second through-hole;
• wherein said electrical-conduction element is configured to include an electrical-conduction chip abutting on said shaft, a coil spring biasing said electrical-conduction chip toward said shaft, and a spacer formed with an insulator which is interposed between said electrical-conduction chip and said coil spring to put said electrical-conduction chip and said coal spring in a non-conductive state, so that current is supplied to said shaft through said electrical-conduction chip to conduct electricity to said bit.