Device for heating shrinkable sleeves

摘要

A resistance element (19) for a device for shrinking shrinkable sleeves comprises an elongate electrical conductor extending in a zigzag pattern and bent to a tunnel shape. The shrinkable sleeve including for example an optical fiber enclosed therein is placed in that region of the resistance element (19), which corresponds to approximately the geometric axis of the upper semi-cylindric portion of the tunnel shape. The resistance element (1) has attachment pins (33) and contact and attachment pins (35) at its front and rear sides respectively intended to be placed in corresponding recesses in a lid of the device. The rear contact and attachment pins (35) have portions (39) intended for contact with elastic, electrically conducting contact pins with which the resistance element (19) comes in contact, when the lid is folded down to perform the shrinking operation. The open and freely suspended design of the resistance element (19) including only small contact areas to the lid result in that the resistance element can be rapidly heated and thereafter rapidly cooled implying that a shrinking operation can be executed in a minimum of time.