Positive temperature coefficient (PTC) rod assembly

摘要

A Positive Temperature Coefficient (PTC) assembly, in which protrusions are formed on opposite longitudinal edges of an electrode terminal, PTC elements are held between the protrusions and are in contact with the electrode terminal, an insulating member is attached to an outer surface of the electrode terminal, and a rod cover houses therein the electrode terminal, the PTC elements and the insulating member. A simple structure is realized, fabrication costs are reduced, and a hollow space inside the rod cover is minimized, leading to improved heat transfer efficiency from the PTC elements to the rod cover, reduced noise and a slim structure.

主权项

1. A positive temperature coefficient rod assembly, comprising:
a positive temperature coefficient element generating heat when electric power is supplied thereto; an electrode terminal configured as a flat plate with at an upper surface thereof contacting a lower surface of the positive temperature coefficient element, wherein the electrode terminal has protrusions extending upwardly from the flat plate at opposite longitudinally-extending edges thereof to directly contact opposite lateral sides of the positive temperature coefficient element to supply electricity to the positive temperature coefficient element and to hold the positive temperature coefficient element between the protrusions; an insulating member attached to a lower surface of the electrode terminal and outer surfaces of the protrusions that are not in contact with the positive temperature coefficient element; and a rod cover housing therein the positive temperature coefficient element, electrode terminal and insulating member; wherein an upper surface of the positive temperature coefficient element and outer surfaces of the insulating member are fixedly contacting the inner surfaces of the rod cover; and wherein the insulating member comprises an insulating film bonded to the lower surface of the electrode terminal and the outer surfaces of the protrusions.