To provide a terminal sleeve for heater, capable of preventing, even when a heater is used at high temperature for a long time, discharge resulting from internal vacuumization thereof.
The terminal sleeve for heater includes a movable plate composed of a circular plate and including a columnar projection protrusively provided at the center of the upper surface thereof and a groove engraved on the base end side of the columnar projection, the groove being bonded with a sealing O-ring; and a cylindrical boss having a lid portion with a hole bored in the center and a bottom portion with a hole bored in the center. The movable plate is stored within the boss so that the columnar projection is protruded out of the hole of the lid portion, and the boss is fixed to the outer circumference of a metallic sheath while interposing a spring in a compressed state between the bottom plate of the movable plate and the bottom portion.
NISHIKAWA TOSHIHITO
YAO KAORU
TAKEMORI YOHEI
| JP2001254892A | 2001-09-21 | |||
| JPH0529071A | 1993-02-05 | |||
| JPS5925191A | 1984-02-09 |
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