Title:
OVERCURRENT TRIPPING DEVICE, AND CIRCUIT BREAKER IN WHICH OVERCURRENT TRIPPING DEVICE IS USED
Document Type and Number:
WIPO Patent Application WO/2020/230684
Kind Code:
A1
Abstract:
The present invention comprises: a conductor; a fixed and partially open iron core (1) that surrounds the conductor; a movable iron core (2) that has a magnetic gap and is movably disposed at the position where the fixed iron core (1) is open; a rod (5) of elongated form that penetrates into the fixed iron core (1), is linked to a tripping mechanism at an end part that projects to the exterior, and is fixed to the movable iron core (2); and a lever (8) that is connected at one end to the rod (5) and is connected at the other end to a spring (9) provided outside the fixed iron core (1), the lever (8) rotating about a fulcrum and transmitting the load force of the spring (9) to the movable iron core (2). The fixed iron core (1) has a space that is perpendicular to the direction in which the conductor extends, in which space a plate-shaped fixed iron core guide (6) having a grooved part is fixed and the lever (8) is disposed. The movable iron core (2) has a space perpendicular to the direction in which the conductor extends, and a plate-shaped movable iron core guide (7) that slides partially sandwiched in the grooved part is fixed in the space.
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Inventors:
SASAKI HIROSHI (JP)
KAMINO YASUHIRO (JP)
SAGARA YUTA (JP)
KAMINO YASUHIRO (JP)
SAGARA YUTA (JP)
Application Number:
PCT/JP2020/018509
Publication Date:
November 19, 2020
Filing Date:
May 07, 2020
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H01H71/24
Domestic Patent References:
| WO2016204104A1 | 2016-12-22 | |||
| WO2019038813A1 | 2019-02-28 |
Foreign References:
| EP2431992A1 | 2012-03-21 | |||
| DE19715114A1 | 1998-10-22 | |||
| EP2431992A1 | 2012-03-21 |
Other References:
See also references of EP 3971933A4
Attorney, Agent or Firm:
PALMO PATENT FIRM, P.C. (JP)
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