Electromagnetic relay including a rotatable armature mount
AssigneePotter & Brumfield, Inc.
InventorRichard E. Bell
Life of this patent
Estimating the term…
Abstract
A compact electromagnetic relay of the type having an insulative base (1) adapted to receive an electromagnetic assembly (2, 3, 4) on one side of its partition wall (15) and a contact assembly (6) on the other side includes especially adapted armature (3) and pusher (5). The armature has one leg (32) that is bifurcated to form a slotted opening (324) communicating with a socket (323). The shaft region (55) of the pusher has two cross-sectional dimensions of different size. One dimension d1 allows the slotted opening to freely pass over it while the other dimension d2 prevents the socket from disengaging with the pusher when the armature is rotated to assume its working position.
Claims10
An electromagnetic relay comprising:
- (a) an electromagnetic coil having an axis and a core coextensive with said axis;
- (b) an angled yoke having a first yoke leg perpendicular to said axis and adapted to receive said core and a second yoke leg parallel to the axis, said second leg having a free end serving as a fulcrum;
- (c) a plurality of contact elements comprising at least one stationary contact element and at least one moveable contact element secured in a base body, said yoke including said coil mounted on said base body;
- (d) a generally L-shaped armature pivotally mounted on said fulcrum and having a first leg forming a working air gap with said core and a second leg extending generally parallel to said axis, the first leg of the armature being actuated by said armature responsive to the electromagnetic coil by moving to reduce the working air gap when the coil is energized;
- (e) a pusher member for transferring movement of the armature to the at least one moveable contact, the pusher member having a longitudinal axis and having a first end portion engaged with said second armature leg and a second end portion engaged with said at least one moveable contact element, said first end of the pusher member including an elongated section extending between two retaining means displaced laterally and extending circumferentially from said elongated section, for defining its length;
- and
- (f) said second armature leg having a bifurcated end adapted to slide over and embrace said elongated section of the pusher member between said two retaining means, the bifurcated end of the armature having an opening and a socket, the opening adapted to freely slide around one dimension of the elongated section while the socket is longitudinally restricted between said two retaining means and the other dimension of the elongated section being larger than the one dimension.
An electromagnetic relay comprising:
- (a) an electromagnetic coil having an axis and a core coextensive with said axis;
- (b) an angled yoke having a first yoke leg perpendicular to said axis and adapted to receive said core and a second yoke leg parallel to the axis, said second leg having a free end serving as a fulcrum;
- (c) a plurality of contact elements comprising at least one stationary contact element and at least one moveable contact element secured in a base body, said yoke including said coil mounted on said base body;
- (d) a geneally L-shaped armature pivotally mounted on said fulcrum and having a first leg forming a working air gap with said core and a second leg extending generally parallel to said axis, the first leg of the armature being actuated by said armature responsive to the electromagnetic coil by moving to reduce the working air gap when the coil is energized;
- (e) a pusher member for transferring movement of the armature to the at least one moveable contact, the pusher member having a longitudinal axis and having a first end portion engaged with said second armature leg and a second end portion engaged with said at least one moveable contact element, said first end of the pusher member including an elongated section extending between two retaining means displaced laterally and extending circumferentially from said elongated section, for defining its length;
- (f) said second armature leg having a bifurcated end adapted to slide over and embrace said elongated section of the pusher member between said two retaining means, the bifurcated end of the armature having an opening and a socket, the opening adapted to freely slide around one dimension of the elongated section while the socket is longitudinally restricted between said two retaining means;
- (g) the elongated section of the pusher having a generally elliptical cross-section having a first diameter and a second diameter wherein the first diameter exceeds the second diameter;
- and
- (h) the bifurcated end of the second armature leg, embracing the elongated section of the pusher in form of a pair of claws defining said socket having an opening of the end of the armature leg, the width of the opening being wider than the second diameter of said elliptical cross-section of the pusher and narrower than the first diameter of said elliptical cross-section.
An electromagnetic relay having a base including a flat portion and supporting an electromagnetic assembly, the electromagnetic assembly including a coil containing a core mounted on a yoke which circumferentially extends around the coil, a contact assembly including at least one stationary contact and at least one moveable contact, a pivotable armature having a first portion extending between the yoke and the core having a normal position defining an air gap between it and the core, the relay comprising:
- a second portion of the pivotable armature having a bifurcated end region forming a slotted opening communicating with a socket, a pushing member disposed between the second portion of the armature and the moveable contact for operating the relay, the pusher member having a shaft portion of two different cross-sectional dimensions extending between two retainers, the shaft region having only one cross-sectional dimension less than the slotted opening enabling the bifurcated end of the armature to be mounted thereon while being longitudinally secured between the two retainers, and the bifurcated end restricting movement of the pushing member in a direction perpendicular to the flat portion of the base while holding the pushing member in its operating position.
Dependencies are inferred from the claim text.