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US 12,626,879 B2Granted
Circuit breaker tripping mechanism
AssigneeRockwell Automation Technologies, Inc.
InventorsDavid J. Urech, Sadashiv Pimple, Rahel J. von Arx
Life of this patent
Estimating the term…
Abstract
Embodiments of the present technology include a circuit breaker with a tripping mechanism. The tripping mechanism includes a latch and a latch lever, according to some embodiments. The latch lever may be coupled to a toggle via a joint arm in some embodiments. The latch lever may also be coupled to a change lever via a buckled shackle. In some embodiments, the buckled shackle includes a first section, a second section, and a bend between the first section and the second section.
Claims20
A tripping mechanism comprising:
- a latch comprising:
- a pivoting body,
- a first extension disposed on the pivoting body at a first location, the first extension comprising a latch contact surface, and
- a second extension disposed on the pivoting body at a second location, the second extension comprising a trip component contact surface, wherein movement of a trip component in contact with the trip component contact surface causes the pivoting body to pivot about a first axis from a first position to a second position;
- a latch lever comprising:
- a first end, a second end, and a bend disposed between the first end and the second end,
- a first rotational joint disposed at the bend and a second rotational joint disposed at the first end and spaced apart from the first rotational joint,
- a latch lever contact surface disposed at the second end, wherein the latch lever moves between an on position and a trip position, wherein movement of the latch to the second position causes the latch lever to move from the on position to the trip position;
- and
- a buckled shackle comprising:
- a first section comprising a first end coupled to the second rotational joint,
- a second section comprising a second end coupled to a change lever, wherein the second section is integral with the first section, and
- a bend having an oblique angle between the first section and the second section, wherein the oblique angle is selected such that a force exerted by the latch lever contact surface on the latch contact surface falls within a sensitivity range when the latch lever is in the on position and the latch is in the first position.
10 more elements
A circuit breaker comprising:
- a stationary contact disposed in a circuit;
- a moving contact that moves between a first position in which the moving contact physically contacts the stationary contact and a second position in which the moving contact is separated from the stationary contact;
- a switch being selectable between an ON state in which the moving contact physically contacts the stationary contact and an OFF state in which the moving contact is separated from the stationary contact;
- a rotary disk coupled to the switch;
- and
- a tripping mechanism coupled to the rotary disk, wherein the tripping mechanism comprises:
- a latch comprising a first extension having a latch contact surface and a second extension that receives a mechanical indication of a trip condition in the circuit breaker, wherein the latch moves in response to the mechanical indication to initiate a trip response;
- a latch lever, comprising:
- a first rotational joint,
- a second rotational joint spaced apart from the first rotational joint, and
- a latch lever contact surface that applies a force against the latch contact surface of the latch when the latch lever is in an on position corresponding to the ON state of the switch;
- and
- a buckled shackle comprising:
- a first section comprising a first end coupled to the second rotational joint,
- a second section comprising a second end coupled to a change lever, wherein the second section is integral with the first section, and
- a bend having an oblique angle between the first section and the second section, wherein the oblique angle is selected such that a force exerted by the latch lever contact surface on the latch contact surface falls within a sensitivity range when the latch lever is in the on position and the latch is in the first position.
13 more elements
Dependencies are inferred from the claim text.