Opening/closing device

Patent metadata

Field	Value
Publication number	US-12281672-B2
Application number	US-202318149634-A
Country	US
Kind code	B2
Filing date	Jan 3, 2023
Priority date	Aug 24, 2020
Publication date	Apr 22, 2025
Grant date	Apr 22, 2025

Abstract

An opening/closing device of an embodiment has first to third movable contacts, first to third transmission mechanisms, first to third containers, a crankshaft, an operating mechanism, and a shock absorbing mechanism. The first to third movable contacts are accommodated in the first to third containers. The first to third transmission mechanisms are connected to the first to third movable contacts. The first to third containers accommodate at least the first movable contact. The crankshaft operates the first to third transmission mechanisms and changes the first to third movable contacts from a closed state to an open state. The operating mechanism is disposed on the side of the first transmission mechanism to rotate the crankshaft. The shock absorbing mechanism is disposed on the side of the third transmission mechanism to absorb a shock of rotational movement of the crankshaft.

First claim

What is claimed is:

1. An opening/closing device comprising:
a first movable contact accommodated in a first container;
a first transmission mechanism connected to the first movable contact;
the first container configured to accommodate at least the first movable contact;
a second movable contact accommodated in a second container;
a second transmission mechanism connected to the second movable contact;
the second container configured to accommodate at least the second movable contact and aligned with the first container;
a third movable contact accommodated in a third container;
a third transmission mechanism connected to the third movable contact;
the third container configured to accommodate at least the third movable contact and aligned with the second container;
a crankshaft configured to operate the first transmission mechanism, the second transmission mechanism, and the third transmission mechanism and change the first movable contact, the second movable contact, and the third movable contact from a closed state to an open state;
an operating mechanism disposed on a side of the first transmission mechanism and configured to rotate the crankshaft; and
a shock absorbing mechanism disposed on a side of the third transmission mechanism and configured to absorb a shock of rotational movement of the crankshaft by stopping movement in a rotating direction of a shock absorbing mechanism crank lever rotating in a same direction as a rotating direction of the crankshaft.

2. The opening/closing device according to claim 1 , wherein:
the first transmission mechanism includes:
a first operating rod connected to the first movable contact;
a first crank lever connected to the crankshaft and rotated according to rotation of the crankshaft; and
a first insulating operating rod configured to convert rotational movement of the first crank lever into movement of the first operating rod,

the second transmission mechanism includes:
a second operating rod connected to the second movable contact;
a second crank lever connected to the crankshaft and rotated according to rotation of the crankshaft; and
a second insulating operating rod configured to convert rotational movement of the second crank lever into movement of the second operating rod, and

the third transmission mechanism includes:
a third operating rod connected to the third movable contact;
a third crank lever connected to the crankshaft and rotated according to rotation of the crankshaft; and
a third insulating operating rod configured to convert rotational movement of the third crank lever into movement of the third operating rod.

3. The opening/closing device according to claim 1 , further comprising a position adjusting mechanism configured to adjust a position of the shock absorbing mechanism.

4. An opening/closing device comprising:
a first movable contact accommodated in a first container;
a first transmission mechanism connected to the first movable contact;
the first container configured to accommodate at least the first movable contact;
a second movable contact accommodated in a second container;
a second transmission mechanism connected to the second movable contact;
the second container configured to accommodate at least the second movable contact and aligned with the first container;
a third movable contact accommodated in a third container;
a third transmission mechanism connected to the third movable contact;
the third container configured to accommodate at least the third movable contact and aligned with the second container;
a crankshaft configured to operate the first transmission mechanism, the second transmission mechanism, and the third transmission mechanism and change the first movable contact, the second movable contact, and the third movable contact from a closed state to an open state;
an operating mechanism disposed on a side of the first transmission mechanism and configured to rotate the crankshaft; and
a shock absorbing mechanism disposed on a side of the third transmission mechanism and configured to absorb a shock of rotational movement of the crankshaft,
wherein:
the crankshaft includes a first crank connecting rod, a second crank connecting rod, and a third crank connecting rod provided to correspond to the first movable contact, the second movable contact, and the third movable contact, respectively, and each having a fixed thickness,
the first crank connecting rod and the second crank connecting rod are connected via a first coupling, and the second crank connecting rod and the third crank connecting rod are connected via a second coupling, and
a geometrical moment of inertia around a rotation axis of the third crank connecting rod is smaller than a geometrical moment of inertia around a rotation axis of the second crank connecting rod, and the geometrical moment of inertia around the rotation axis of the second crank connecting rod is smaller than a geometrical moment of inertia around a rotation axis of the first crank connecting rod.

5. An opening/closing device comprising:
a first movable contact accommodated in a first container;
a first transmission mechanism connected to the first movable contact;
the first container configured to accommodate at least the first movable contact;
a second movable contact accommodated in a second container;
a second transmission mechanism connected to the second movable contact;
the second container configured to accommodate at least the second movable contact and aligned with the first container;
a third movable contact accommodated in a third container;
a third transmission mechanism connected to the third movable contact;
the third container configured to accommodate at least the third movable contact and aligned with the second container;
a crankshaft configured to operate the first transmission mechanism, the second transmission mechanism, and the third transmission mechanism and change the first movable contact, the second movable contact, and the third movable contact from a closed state to an open state;
an operating mechanism disposed on a side of the first transmission mechanism and configured to rotate the crankshaft; and
a shock absorbing mechanism disposed on a side of the third transmission mechanism and configured to absorb a shock of rotational movement of the crankshaft,
wherein a geometrical moment of inertia around a rotation axis of the crankshaft tends to be reduced as the crankshaft extends away from the operating mechanism.

6. An opening/closing device comprising:
a first movable contact accommodated in a first container;
a first transmission mechanism connected to the first movable contact;
the first container configured to accommodate at least the first movable contact;
a second movable contact accommodated in a second container;
a second transmission mechanism connected to the second movable contact;
the second container configured to accommodate at least the second movable contact and aligned with the first container;
a third movable contact accommodated in a third container;
a third transmission mechanism connected to the third movable contact;
the third container configured to accommodate at least the third movable contact and aligned with the second container;
a crankshaft configured to operate the first transmission mechanism, the second transmission mechanism, and the third transmission mechanism and change the first movable contact, the second movable contact, and the third movable contact from a closed state to an open state;
an operating mechanism disposed on a side of the first transmission mechanism and configured to rotate the crankshaft; and
a shock absorbing mechanism disposed on a side of the third transmission mechanism and configured to absorb

Assignees

• Toshiba Kk
• Toshiba Energy Systems & Solutions Corp

Inventors

• OGAWA Satoi
• Marushima Satoshi
• Ohda Yoshiaki
• Inoue Tooru
• Hasegawa Tomohiro
• Kato Norimitsu

Classifications

• F16F15/1297

  Overload protection, i.e. means for limiting torque · CPC title

• H01H3/60

  Mechanical arrangements for preventing or damping vibration or shock · CPC title

• H01H3/46

  using rod or lever linkage, e.g. toggle · CPC title

• H01H2033/426

  Details concerning the connection of the isolating driving rod to a metallic part · CPC title

• F16C3/12 Primary

  releasably connected · CPC title