Shallow electrical protection device (GFCI, AFCI, and AFCI/GFCI) system and method
An electrical outlet receptacle including a circuit board defining a first plane and a solenoid having a central axis perpendicular to the first plane. The electrical outlet receptacle further including a reset plunger with a portion extending through the first end of the solenoid and axially movable therein, and an armature movable axially along the portion of the reset plunger extending through the solenoid. Wherein the armature includes a slanted projection configured to contact a cam surface of a slide mechanism and provide the downward force on the cam surface.
1. An electrical outlet receptacle comprising:
a circuit board defining a first plane;
a solenoid having a central axis perpendicular to the first plane;
a reset plunger with a portion extending through a first end of the solenoid and axially movable therein; and
an armature movable axially along the portion of the reset plunger extending through the solenoid, wherein the armature includes a slanted projection configured to contact a cam surface of a slide mechanism and provide a downward force on the cam surface.
2. The electrical outlet receptacle of claim 1 , further comprising a carriage movable axially along the solenoid and configured to interact with a set of movable contacts, the carriage being adapted to advance the set of movable contacts to form electrical communication with a set of fixed contacts during resetting of the electrical outlet receptacle.
3. The electrical outlet receptacle of claim 2 , further comprising a lifting shelf slidably coupled to a slot in the carriage and movable in a translational direction perpendicular to the central axis of the solenoid, the lifting shelf having a latching portion.
4. The electrical outlet receptacle of claim 3 , further comprising a slide mechanism coupled to the lifting shelf and movable in the translational direction of the lifting shelf, the slide mechanism having a cam surface to transform the downward force to a translational force applied to the coupled lifting shelf.
5. The electrical outlet receptacle of claim 3 , wherein the reset plunger has an intermediate collar configured to engage to the latching portion of the lifting shelf.
6. The electrical outlet receptacle of claim 3 , further comprising a slide mechanism including a tab portion configured to apply a translational force to the lifting shelf.
7. The electrical outlet receptacle of claim 6 , further comprising:
a contact spring coupled to the lifting shelf and movable therewith, the contact spring being configured to send a signal when in electrical communication with at least one contact pad of the circuit board; and
a return spring coupled to the lifting shelf, the return spring having a maximum compression characteristic that limits movement in the translational direction of the lifting shelf.
8. The electrical outlet receptacle of claim 7 , wherein pressing of the reset plunger causes an intermediate collar of the reset plunger to apply a push force on the latching portion of the lifting shelf at least until the contact spring forms electrical communication with the at least one contact pads of the circuit board in an unlatched pushing state.
9. The electrical outlet receptacle of claim 1 , wherein
when in an unlatched pushing state, the solenoid momentarily energizes, causing the slanted projection to move axially along the reset plunger and contact the cam surface to provide a downward force, and
when the solenoid momentarily de-energizes, the slanted projection retracts axially along the reset plunger.
10. The electrical outlet receptacle of claim 9 , wherein when the electrical outlet receptacle is in a latched state, subsequent release of the reset plunger pulls a carriage to form electrical communication between a set of movable contacts and a set of fixed contacts.
11. The electrical outlet receptacle of claim 1 , wherein the solenoid includes a coil bobbin with an inner coil and an outer coil.