Switching device
AssigneeHitachi, Ltd.
InventorsHiroaki Hashimoto, Kiyoshi Okumura, Shinji Seto
Life of this patent
Estimating the term…
Abstract
A switching device changes over breaking and closing of an electric current by opening/closing a contact portion. An electrically-operated motor generates energy for closing a contact and energy generated by the rotation of the electrically-operated motor is accumulated in a breaking spring. The energy generated by the electrically-operated motor is transmitted to the contact by way of a cam, a breaking spring link, a transfer lever and the like. The breaking spring is arranged in the midst of the converting lever. When the contact is opened, the electrically-operated motor is stopped and the energy accumulated in the breaking spring is released.
Claims11
A switching device which performs breaking and closing of an electric current by opening/closing a contact, the switching device comprising:
- an electrically-operated motor which generates energy for closing the contact;
- energy accumulation means which accumulates energy generated by rotation of the electrically-operated motor;
- and transmission means which transmits energy generated by the electrically-operated motor to the contact, wherein
- the energy accumulation means is arranged in the transmission means, and
- when the contact is opened, the electrically-operated motor is stopped and the energy accumulated in the energy accumulation means is released.
A switching device which changes over breaking and closing of an electric current by opening/closing between a fixed contact maker and a movable contact maker, the switching device comprising:
- accumulation means which releases accumulated energy when the electric current is breaking and accumulates energy for breaking when an electric current is inserted, and
- an electrically-operated motor which is mechanically connected to the accumulation means and accumulates a breaking energy, wherein
- when the electric current is broken, energy generated by the electrically-operated motor is transmitted to the movable contact maker.
A switching device which changes over breaking and closing of an electric current by opening/closing between a fixed contact and a moving contact, the switching device comprising:
- a spring which accumulates energy for the breaking of the electric current;
- a cam which releases the spring in an opening operation and transmits energy to the spring in a closing operation;
- an electrically-operated motor which generates an closing energy and is mechanically connected to the cam;
- a breaking operation means which restricts rotation of the cam;
- and
- control means which controls the electrically-operated motor and the breaking operation means, wherein
- the control means controls timing in which the energy of the spring is transmitted from the cam to the breaking operation means in a closing holding state and a command is inputted to the breaking operation means at the time of performing the breaking operation, and
- the control means controls the driving current of the electrically-operated motor at the time of performing the closing operation.
Dependencies are inferred from the claim text.