Title:
CIRCUIT BREAKER
Document Type and Number:
Japanese Patent JP2679640
Kind Code:
B2
Abstract:
PURPOSE: To provide a breaker excellent in productivity such as assembling workability by making an action time adjusting device abut on an adjusting part provided on a movable core to be detachably locked to a case.
CONSTITUTION: An adjustable mechanism 70 is fixed to a case 4 by fittedly inserting a supporting plate 20 into the groove 4d of the case 4. The thin thickness part 1a of a cover l is removed to make a condition where a control 25 can be operated from outside. In this condition, the lower end part 18c of a rod 18 abuts on the adjusting part 50c of a movable core abutting plate 50. The initial position of a movable core 15 can be changed to adjust an instant characteristic by vertically sliding the rod 18 for rotating the control 25 to raise or lower the adjusting part 50c. Consequently, workability at the time of assembling and maintenance can be improved.
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Inventors:
Wataru Teraoka
Application Number:
JP22136694A
Publication Date:
November 19, 1997
Filing Date:
September 16, 1994
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H01H71/12; H01H71/52; H01H71/74; H01H73/22; H01H73/24; (IPC1-7): H01H71/52; H01H73/24
Domestic Patent References:
| JPS57202035A |
Attorney, Agent or Firm:
Ogawa Katsuo
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