Patent ID: 11936133
Assignee: SCHOTT AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  F | IPC B  H

Claim 16:
17. A pressure-resistant container equipped with a hermetic terminal comprising:
a metal base that is provided with at least one sealing hole;
a lead that is inserted in the sealing hole provided on the metal base;
an insulating material that hermetically seals the metal base and the lead; and
a heat insulating member that is provided to cover at least a partial surface of the hermetic terminal which is located inside a pressure-resistant container after the hermetic terminal is fixed to the pressure-resistant container and comes into contact with refrigerant sealed in the pressure-resistant container; wherein
(1) the heat insulating member is provided to completely cover at least an entire surface of the hermetic terminal located inside the terminal fixing hole provided on the pressure-resistant container except a tip end of the lead located inside the pressure-resistant container, and the tip end is configured to be inserted into a connector which is connected to a wiring cord of an electric motor arranged inside the pressure-resistant container; or
(2) the heat insulating member is made of rubber selected from hydrogenated nitrile butadiene rubber (HNBR) and ethylene-propylene-diene monomer (EPDM), and the rubber constituting the heat insulating member is carbon black free or contains a very small amount of carbon black; or
(3) the heat insulating member includes a portion that extends along at least a surface of the lead located inside the pressure-resistant container and covers the lead except a tip end thereof, the portion of the heat insulating member that covers the lead is provided with an annular projection that surrounds an outer circumference of the heat insulating member, and the annular projection has an outer diameter that matches an inner diameter of a connector which is connected to a wiring cord of an electric motor arranged inside the pressure-resistant container so as to prevent refrigerant and lubricating oil from entering inside the connector.