Breaker, breaker assembly, and contactor

Patent metadata

Field	Value
Publication number	US-2023026399-A1
Application number	US-202017788004-A
Country	US
Kind code	A1
Filing date	Dec 24, 2020
Priority date	Dec 24, 2019
Publication date	Jan 26, 2023
Grant date	—

Abstract

A breaker is provided which is used for controlling only one current path. The breaker includes a contact assembly, a movable contact and a housing accommodating the contact assembly and the actuating member. The contact assembly includes: a first stationary contact having a first stationary contact portion; a second stationary contact having a second stationary contact portion; and a movable contact having a first movable contact portion and a second movable contact portion which are respectively located at both ends of the movable contact. The actuating member is connected to the movable contact to actuate the movable contact in a first direction to move between an open position and a closed position. A breaker assembly and a contact having the breaker are also provided.

First claim

1 . A breaker used for controlling only one current path, wherein the breaker comprises:
a contact assembly, comprising:
a first stationary contact, comprising a first stationary contact portion;
a second stationary contact, comprising a second stationary contact portion; and
a movable contact, comprising a first movable contact portion and a second movable contact portion which are respectively located at both ends of the movable contact;
an actuating member, connected to the movable contact to actuate the movable contact in a first direction to move between an open position and a closed position, at the open position, the first movable contact portion being spaced apart from the first stationary contact portion and the second movable contact portion being spaced apart from the second stationary contact portion to turn-off the one current path, and, at the closed position, the first movable contact portion being in contact with the first stationary contact portion and the second movable contact portion being in contact with the second stationary contact portion, to turn on the one current path; and a housing, accommodating the contact assembly and the actuating member.

2 . The breaker according to claim 1 , wherein
the breaker only comprises one movable contact and two stationary contacts, and the two stationary contacts are the first stationary contact and the second stationary contact respectively.

3 . The breaker according to claim 1 , further comprising:
an arc extinguishing device, comprising a plurality of arc extinguishing grid sheets; an arc running piece, configured to guide an arc from the first stationary contact and the second stationary contact to the arc extinguishing device; and an arc guiding piece, configured to guide an arc from the movable contact to the arc extinguishing device, wherein the actuating member extends to an outside of the housing in the first direction, the first stationary contact and the second stationary contact respectively extend the outside of the housing in a second direction perpendicular to the first direction, and the movable contact, the actuating member, the arc extinguishing device, the arc running piece and the arc guiding piece are completely accommodated in the housing.

4 . The breaker according to claim 3 , wherein
the plurality of arc extinguishing grid sheets are spaced apart from each other in the second direction, and extend into sheets in the first direction and a third direction perpendicular to the second direction.

5 . The breaker according to claim 3 , wherein
each of the first stationary contact and the second stationary contact comprises a first parallel section, a second parallel section, and a contact curved section connecting the first parallel section and the second parallel section, the first parallel section extends in the second direction in the housing, and the second parallel section extends the outside of the housing in the second direction, and the first stationary contact portion and the second stationary contact portion are respectively arranged on the first parallel section of the first stationary contact and the first parallel section of the second stationary contact.

6 . The breaker according to claim 5 , further comprising:
a first magnetic resistance piece and a second magnetic resistance piece, wherein the first magnetic resistance piece is positioned between the first parallel section and the second parallel section of the first stationary contact in the first direction, and is closer to the first parallel section of the first stationary contact, the second magnetic resistance piece is positioned between the first parallel section and the second parallel section of the second stationary contact in the first direction, and is closer to the first parallel section of the second stationary contact.

7 . The breaker according to claim 3 , wherein
at least two arc extinguishing devices are provided and comprises a first arc extinguishing device and a second arc extinguishing device, at least two arc running pieces are provided and comprises a first arc running piece and a second arc running piece, the first arc running piece extends from a first arc running end portion of the first arc running piece arranged adjacent to the first stationary contact portion to a second arc running end portion of the first running piece through the first arc extinguishing device, and the second arc running piece extends from a third arc running end portion of the second arc running piece arranged adjacent to the second stationary contact portion to a fourth arc running end portion of the second arc running piece through the second arc extinguishing device; the arc guiding piece is an integral piece, and comprises a first arc guiding section extending in the first direction and a second arc guiding section extending in the first direction, which are respectively located at both ends of the arc guiding piece, the first arc guiding section is arranged between the first arc extinguishing device and the movable contact in the second direction, and the second arc guiding section is arranged between the second arc extinguishing device and the movable contact in the second direction; the second arc running end portion of the first arc running piece and the first arc guiding section are arranged on opposite sides of the first arc extinguishing device in the second direction, the fourth arc running end portion of the second arc running piece and the second arc guiding section are arranged on opposite sides of the second first arc extinguishing device in the second direction.

8 . The breaker according to claim 1 , further comprising:
a first guide member and a second guide member, configured to guide a movement of the actuating member in the first direction, and the movable contact is arranged between the first guide member and the second guide member in the first direction.

9 . A breaker assembly, comprising:
a plurality of breakers each of which is used for controlling only one current path, wherein breaker comprises: a contact assembly, comprising:
a first stationary contact, comprising a first stationary contact portion;
a second stationary contact, comprising a second stationary contact portion; and
a movable contact, comprising a first movable contact portion and a second movable contact portion which are respectively located at both ends of the movable contact;
an actuating member, connected to the movable contact to actuate the movable contact in a first direction to move between an open position and a closed position, at the open position, the first movable contact portion being spaced apart from the first stationary contact portion and the second movable contact portion being spaced apart from the second stationary contact portion to turn-off the one current path, and, at the closed position, the first movable contact portion being in contact with the first stationary contact portion and the second movable contact portion being in contact with the second stationary contact portion, to turn on the one current path; and a housing, accommodating the contact assembly and the actuating member; wherein the actuating members of the plurality of breakers are connected with each other to move in linkage.

10 . A contactor, comprising:
a breaker used for controlling only one current path, wherein the breaker comprises: a contact assembly, comprising:
a first stationary contact, comprising a first stationary contact portion;
a second stationary contact, comprising a second stationary contact portion; and
a movable contact, comprising a first movable contact portion and a second movable contact portion which are respectiv

Assignees

• Schneider Electric Ind Sas

Inventors

• Wang Yuanzhong
• Xiao Jiaren
• Xia Xuedong

Classifications

• H01H9/34

  Stationary parts for restricting or subdividing the arc, e.g. barrier plate · CPC title

• H01H9/32 Primary

  Insulating body insertable between contacts · CPC title

• H01H73/18 Primary

  Means for extinguishing or suppressing arc {(magnet coil acting as blow-out device H01H71/38)} · CPC title

• H01H1/20

  Bridging contacts {(for circuit breakers H01H73/045)} · CPC title

• H01H9/46

  using arcing horns (using blow-out magnet H01H9/44) · CPC title