A sealed transfer connector for ultra-low temperature environment and its manufacturing method

Abstract

The invention relates to a sealed change-over connector used for an ultralow temperature environment and a manufacturing method thereof. The sealed change-over connector comprises a metal shell, wherein the metal shell is provided with a plurality of through holes in the axial direction; each through hole is provided with a contact pin used for connecting with a cable in a penetrating way; a glass sealing member is sintered between the metal shell and the contact pins in an integrating way; the metal shell is made of a metal material with the larger hot-shrinkage rate; the glass tube is made of a glass material with the low temperature resistant property and the smaller hot-shrinkage rate. According to the sealed change-over connector, along with the reduction of the environment temperature, as the metal shell has the larger shrinkage rate, the shrinkage amount of the metal shell is larger than that of the glass tube; in the shrinkage process, the glass tube is compacted more and more, the glass tube compresses the contact pins more and more, and the binding force among the metal shell, the glass tube and the contact pins is larger and larger along with the reduction of the temperature; the connector has an excellent sealing effect under the ultralow temperature liquid hydrogen environment (253 DEG C below zero), the defect of the insufficient using temperature range of the existing connector is overcome; the low temperature use limit of the connector is effectively broadened.

Description

technical field [0001] The invention relates to the technical field of electrical connectors, in particular to a sealed transfer connector used in an ultra-low temperature environment and a manufacturing method thereof. Background technique [0002] Electrical connectors are widely used in aerospace, electronics, communication and other industries. They are one of the important basic components in some electronic systems. They can provide connection and separation functions between electrical terminals, and undertake the task of signal and energy transmission. In some special occasions, such as liquid hydrogen (-253°C) and other environments, the working temperature of electrical connectors is extremely low. The general use range of conventional connectors is -65°C to 200°C. Once it exceeds -65°C, often There will be performance failures, which will lead to other security incidents. Contents of the invention [0003] The purpose of the present invention is to solve the de...

AI Technical Summary

Problems solved by technology

In some special occasions, such as liquid hydrogen (-253°C) and other environments, the working temperature of electrical connectors is extremely low. The general use range of conventional connectors is -65°C to 200°C. Once it exceeds -65°C, often There will be performance failures, which will lead to other security incidents

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