IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0516787
(2006-09-07)
|
등록번호 |
US-8497445
(2013-07-30)
|
우선권정보 |
JP-2005-305317 (2005-10-20) |
발명자
/ 주소 |
- Yoshida, Shoji
- Odaka, Nobuyuki
- Furusawa, Masayuki
|
출원인 / 주소 |
- Fuji Electric FA Components & Systems Co., Ltd.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
7 |
초록
▼
A vacuum valve includes a hermetically sealed vessel having an insulative cylinder, an end plate at a movable electrode end, and an end plate at a fixed electrode end. The vessel accommodates a movable contact and an opposed fixed contact. The movable contact is supported through a bellows allowing
A vacuum valve includes a hermetically sealed vessel having an insulative cylinder, an end plate at a movable electrode end, and an end plate at a fixed electrode end. The vessel accommodates a movable contact and an opposed fixed contact. The movable contact is supported through a bellows allowing the contacts to open and close while maintaining an air-tight (hermetic) seal. The bellows used in at least one embodiment is a seam type bellows without metal plating. Nickel plating layers are formed on the end plate at movable contact end and on a cover, which are joined to the bellows. The ends of the bellows are soldered with the end plate and the cover using a silver solder at the solder joints.
대표청구항
▼
1. A vacuum valve comprising a hermetically sealed vessel accommodating a fixed contact piece and a movable contact piece, the hermetically sealed vessel comprising: a cover as a first structural member having a metal plating thereon for covering the same, said cover being formed separately from the
1. A vacuum valve comprising a hermetically sealed vessel accommodating a fixed contact piece and a movable contact piece, the hermetically sealed vessel comprising: a cover as a first structural member having a metal plating thereon for covering the same, said cover being formed separately from the movable contact piece to form the metal plating and connected thereto, said cover comprising a cover inner portion having a through hole through which the movable contact piece passes, a flange located outside the cover inner portion and displaced from the cover inner portion, and a cover vertical portion extending perpendicular to the cover inner portion and flange and connected thereto to thereby form a step part by the cover vertical portion and the cover inner portion,a bellows substantially free of metal plating and having one end portion and the other end portion, andan end plate as a second structural member having a metal plating thereon, said end plate comprising a plate inner portion having a through hole to allow the movable contact piece to pass therethrough, a plate outer portion located outside the plate inner portion and displaced from the plate inner portion, and a plate vertical portion extending perpendicular to the plate inner and outer portions and connected thereto,wherein the first structural member is interposed between the movable contact piece and the bellows such that the one end portion of the bellows is soldered with the cover vertical portion, and the other end portion of the bellows is soldered with the plate vertical portion of second structural member. 2. The vacuum valve according to claim 1, further comprising a solder for connecting the bellows, said solder having a solder fillet formed at a side of the bellows of a soldered portion between the bellows and the cover vertical portion, and another solder fillet formed at a side of the bellows of a soldered portion between the bellows and the plate vertical portion. 3. The vacuum valve according to claim 2, wherein the flange is located above the cover inner portion, and the plate outer portion is located below the plate inner portion. 4. A vacuum valve comprising: a fixed contact piece and a movable contact piece,a hermetically sealed vessel accommodating the fixed contact piece and the movable contact piece,a cover for the movable contact piece having a metal plating thereon, said cover being formed separately from the movable contact piece to form the metal plating thereon and connected thereto, said cover comprising a cover inner portion having a through hole through which the movable contact piece passes, a flange located outside the cover inner portion and displaced from the cover inner portion, and a cover vertical portion extending perpendicular to the cover inner portion and flange and connected thereto to thereby form a step part by the cover vertical portion and the cover inner portion,a bellows substantially free of metal plating, and having one end portion and the other end portion,an end plate for the sealed vessel, said end plate having a metal plating thereon and comprising a plate inner portion having a through hole to allow the movable contact piece to pass therethrough, a plate outer portion located outside the plate inner portion and displaced from the plate inner portion, and a plate vertical portion extending perpendicular to the plate inner and outer portions and connected thereto,a first solder between the cover vertical portion and the one end of the bellows, anda second solder between the plate vertical portion and the other end portion of the bellows,wherein the cover is interposed between the movable contact piece and the bellows and is soldered with the one end portion of the bellows, the other end portion of the bellows is soldered with the end plate, the first solder contains a metallic component transferred from the metal plating to the cover, and the second solder contains a metallic component transferred from the metal plating to the end plate so that the bellows can be securely soldered to the cover and the end plate by the metallic components transferred from the metal plating. 5. The vacuum valve according to claim 4, wherein the first solder includes a solder fillet formed at a side of the bellows of a soldered portion between the bellows and the cover, and the second solder includes another solder fillet formed at a side of the bellows of a soldered portion between the bellows and the end plate.
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