Title:
【発明の名称】電流力で開く接触子装置を持つ電力用遮断器
Document Type and Number:
Japanese Patent JP2556348
Kind Code:
B2
Abstract:
A circuit breaker comprises a housing; a stationary contact mounted in the housing; an operating shaft disposed in the housing and rotatable about a first axis of rotation; and a movable contact including a contact arm pivotally held in the operating shaft for rotation about a second axis of rotation from an on position into a tripped position. By rotating the operating shaft about the first axis of rotation, the contact arm is movable into and out of the on position and an off position. The contact arm further has a terminus including a rounded corner and an adjoining rounded engagement face. There is further provided a structural unit stationarily supported in the housing and comprising a spring having a stationarily supported first end and a second end and a transfer lever having an end pivotally supported for rotation about a third axis of rotation. The lever is disposed between the second end of the spring and the terminus of the contact arm and engages the rounded corner or the rounded engagement face dependent on the position of the contact arm for transmitting a torque from the spring to the contact arm about the second rotary axis.
Inventors:
HANSUUYURUGEN URUFU
Application Number:
JP5511488A
Publication Date:
November 20, 1996
Filing Date:
March 10, 1988
Export Citation:
Assignee:
RITSUENTSUIA PATENTO FUERUBARUTSUNGUSU GMBH
International Classes:
H01H71/10; H01H3/38; H01H73/02; H01H77/10; (IPC1-7): H01H73/02
Domestic Patent References:
| JP5450885A | ||||
| JP54161074A | ||||
| JP5556329A | ||||
| JP60151924A | ||||
| JP60157115A |
Other References:
【文献】欧州特許出願公開148111(EP,A)
Attorney, Agent or Firm:
Osamu Nakahira