| 摘要 |
A holder part (16) provided for at least two contact plates (18,19), incorporates a support plate with a clamp surface, in which the contact plate is sunk with a contact surface in the clamp surface plane. A cover part (17) has a second clamp surface, and the clamp surfaces clamp against each side of the bearer (10) through the effect of a pin which extends across through the bearer from one clamp surface to the other. - At least one of the clamp surfaces is provided with conically extending spikes which grip through the bearer into corresp. cavities in the opposite clamp surface. Each of the pins is tubular and extends through a corresp. circular opening in the cover part which is collared outwards through heat treatment on the outside of the part. A heating wire (12) is firmly soldered to the contact plates (18,19). |
