VACUUM CIRCUIT BREAKER - MITSUBISHI ELECTRIC CORP

Title:

VACUUM CIRCUIT BREAKER

Document Type and Number:

WIPO Patent Application WO/2021/234870

Kind Code:

A1

Abstract:

A connection bellows (150) includes a first bellows (151) and a second bellows (152) having a higher spring constant than the first bellows (151). A connection member (160) is joined to the adjoining first bellows (151) and second bellows (152) and has a hole part (162) penetrating through a movable shaft (130). A push-in member (180), by moving in an axial direction of the movable shaft (130) toward the connection member (160) with movement of the movable shaft (130) in a direction in which a movable contact (120) separates from a fixed contact (110), pushes the connection member (160) to cause the second bellows (152) to contract.

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Inventors:

TOMIZAWA YUSUKE (JP)
SASAI TAKUMA (JP)
AKIYOSHI MASAO (JP)

Application Number:

PCT/JP2020/019994

Publication Date:

November 25, 2021

Filing Date:

May 20, 2020

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

H01H33/662

Foreign References:

JPS5321359U	1978-02-23
JPS6065955A	1985-04-15
JPS5229945U	1977-03-02
JPS5023504B1	1975-08-08
JPS5339258A	1978-04-11

Other References: