Circuit breaker with manual energy-accumulating unit gears intitally separated from one another

Patent metadata

Field	Value
Publication number	US-12087534-B2
Application number	US-202017755954-A
Country	US
Kind code	B2
Filing date	Mar 27, 2020
Priority date	Nov 13, 2019
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

The present disclosure relates to a circuit breaker comprising: a circuit breaking part in which contact points of a fixed contact and a movable contact are in contact with each other; and an energy accumulation part for accumulating energy of a closing spring for controlling contact between the fixed contact and the movable contact, wherein the energy accumulation part comprises: an electromotive energy accumulation part; and a manual energy accumulation part separated from the electromotive energy accumulation part by a manual energy accumulation spring, and engaged with the electromotive energy accumulation part by unit of external pressure so as to transmit an inputted rotational force to the electromotive energy accumulation part, thereby accumulating the energy of the closing spring.

First claim

What is claimed is:

1. A circuit breaker comprising:
circuit breaking unit including a fixed contact and a movable contact whose contact points are in contact with each other; and
energy-accumulating unit for accumulating energy of a closing spring for controlling the contact between the fixed contact and the movable contact,
wherein the energy-accumulating unit includes:
main energy-accumulating unit including a cam shaft, a main output gear disposed on the cam shaft, and a main energy-accumulating casing for accommodating the main output gear; and
auxiliary energy-accumulating unit including electromotive energy-accumulating unit linked with the cam shaft, and manual energy-accumulating unit linked with the electromotive energy-accumulating unit, wherein bevel gears inside the manual energy-accumulating unit are engaged with each other by an external force to transmit the input external force to the electromotive energy-accumulating unit to accumulate the energy of the closing spring,
wherein the bevel gears comprise a primary bevel gear and a secondary bevel gear, and
wherein the primary bevel gear and the secondary bevel gear are arranged to be spaced apart from each other when the manual energy-accumulating unit is not in operation, and to be engaged with each other when the manual energy-accumulating unit is in operation.

2. The circuit breaker of claim 1 , wherein the electromotive energy-accumulating unit includes:
a cam shaft-linked groove connected to the cam shaft;
an auxiliary output gear disposed in the cam shaft-linked groove;
at least one linkage gear linked with the auxiliary output gear; and
an electric motor for rotating the linkage gear.

3. The circuit breaker of claim 2 , wherein the linkage gear includes:
an electric motor gear linked with a rotation shaft of the electric motor;
a primary gear linked with the electric motor gear;
a primary upper gear linked with a rotation shaft of the primary gear;
a secondary gear linked with the primary gear; and
a tertiary gear disposed between the secondary gear and the auxiliary output gear and linked with the secondary gear and the auxiliary output gear.

4. The circuit breaker of claim 3 , wherein the manual energy-accumulating unit includes:
the secondary bevel gear linked with the linkage gear;
the primary bevel gear engaged with the secondary bevel gear by the external force;
a shaft that is a rotation shaft of the primary bevel gear;
a spring support formed on the shaft to be spaced apart from the primary bevel gear;
a rotation key protruding from a side face in a length direction of the shaft in an area of an end of the shaft;
a bush formed in a cylindrical shape with only one side open as a bottom plate is formed between the primary bevel gear and the spring support, wherein a position of the bush is fixed; and
a manual energy-accumulating spring disposed between the bottom plate of the bush and the spring support, wherein the manual energy-accumulating spring provides an elastic force in a direction for separating the primary bevel gear from the secondary bevel gear.

5. The circuit breaker of claim 4 , wherein the secondary bevel gear is linked with a rotation shaft of an integral gear linked with the primary upper gear.

6. The circuit breaker of claim 4 , wherein a direction of the external force is a clockwise direction.

Assignees

• Ls Electric Co Ltd

Inventors

• Yang Hong-Ik

Classifications

• H01H2235/00

  Springs · CPC title

• H01H71/02

  Housings; Casings; Bases; Mountings · CPC title

• H01H2221/00

  Actuators · CPC title

• H01H71/10 Primary

  Operating or release mechanisms · CPC title

• H01H73/02 Primary

  Details · CPC title