| 摘要 |
A heated hair straightener has a handle connecting to an electric source and a pair of scissor-like clamp housings pivoted on the handle and having facing coverplate surfaces for clamping and straightening the hair. This combination has an improvement in the heater sub-assembly fitting in one of the housings and formed as a sandwich arrangement including an aluminum coverplate, a copper elongated heater plate forming a first electrode connected to one side of the line and electrically insulated from the coverplate by a thin dielectric film. Plural PTC heater pellets are aligned on the heater plate and held by an insulating locator panel having cut-outs fixing the pellets on the heater plate. A second electrode, formed as a corrugated stainless steel spring plate covers and abuts the PTC pellets and is connected to the other side of the line. Next is a phenolic or ceramic insulator member with a recess for the corrugated spring plate to fit and abut therein. Alignment structure orients the heater plate, pellet locator panel, and phenolic insulator member with all the sandwich components of the entire sub-assembly fixed against horizontal or vertical movement permitting corrugated electrode flexing and good biasing of the pellets against the electrodes. A metallic mounting plate abutting the insulator member is provided for securing the heater sub-assembly in the housing.
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