Electromagnetic relay
First Claim
1. An electromagnetic relay characterized by:
- a housing having abase seat, and a cover body covering said base seat, said base seat including a bottom wall, and opposite mounting walls extending uprightly from said bottom wall, spaced apart from each other in a first direction and cooperating with said bottom wall so as to define a receiving groove thereamong;
a conductive plate unit mounted on said base seat and includinga first conductive plate disposed adjacent to said mounting walls of said base seat and having a resilient first end portion, and first and second conductive contacts mounted on said first end portion, anda second conductive plate spaced apart from said first conductive plate in a second direction that is perpendicular to the first direction, distal from said mounting walls of said base seat, and having a resilient second end portion, and third and fourth conductive contacts mounted on said second end portion and corresponding respectively to said first and second conductive contacts of said first conductive plate, a distance between said first and third conductive contacts being shorter than that between said second and fourth conductive contacts; and
a magnetic pushing device disposed in said housing and includingan electromagnetic unit mounted in said receiving groove in said base seat, said electromagnetic unit being operable so as to generate a magnetic field in a third direction that is perpendicular to the first and second directions when excited,an actuating plate disposed pivotally in said receiving groove and having a magnetically attractable end portion disposed movably adjacent to a bottom side of said electromagnetic unit, and an actuating end portion opposite to said magnetically attractable end portion and disposed movably adjacent to said electromagnetic unit, said actuating plate being operable so as to pivot between a pushing position and a releasing position, anda pushing block interconnecting said actuating end portion of said actuating plate and said first end portion of said first conductive plate;
wherein, when said actuating plate is in the pushing position, said pushing block is driven by said actuating end portion of said actuating plate to move said first end portion of said first conductive plate toward said second end portion of said second conductive plate such that said first and third conductive contacts, firstly, contact electrically each other and, subsequently, that said second and fourth conductive contacts electrically contact each other; and
wherein, when said actuating plate is in the releasing position, said first end portion of said first conductive plate moves away from said second end portion of said second conductive plate.
1 Assignment
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Accused Products
Abstract
An electromagnetic relay includes an electromagnetic unit operable so as to generate a magnetic field perpendicular to a bottom wall of a housing when excited such that an actuating plate pivots from a releasing position to a pushing position, where a magnetically-attractable end portion of the actuating plate is attracted by the electromagnetic unit and where an actuating end portion of the actuating plate moves toward a first conductive plate, thereby driving a pushing block to move a resilient end portion of the first conductive plate toward a second conductive plate. Hence, first and second contacts on the first conductive plate contact electrically and respectively third and fourth contacts on the second conductive plate.
19 Citations
6 Claims
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1. An electromagnetic relay characterized by:
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a housing having abase seat, and a cover body covering said base seat, said base seat including a bottom wall, and opposite mounting walls extending uprightly from said bottom wall, spaced apart from each other in a first direction and cooperating with said bottom wall so as to define a receiving groove thereamong; a conductive plate unit mounted on said base seat and including a first conductive plate disposed adjacent to said mounting walls of said base seat and having a resilient first end portion, and first and second conductive contacts mounted on said first end portion, and a second conductive plate spaced apart from said first conductive plate in a second direction that is perpendicular to the first direction, distal from said mounting walls of said base seat, and having a resilient second end portion, and third and fourth conductive contacts mounted on said second end portion and corresponding respectively to said first and second conductive contacts of said first conductive plate, a distance between said first and third conductive contacts being shorter than that between said second and fourth conductive contacts; and a magnetic pushing device disposed in said housing and including an electromagnetic unit mounted in said receiving groove in said base seat, said electromagnetic unit being operable so as to generate a magnetic field in a third direction that is perpendicular to the first and second directions when excited, an actuating plate disposed pivotally in said receiving groove and having a magnetically attractable end portion disposed movably adjacent to a bottom side of said electromagnetic unit, and an actuating end portion opposite to said magnetically attractable end portion and disposed movably adjacent to said electromagnetic unit, said actuating plate being operable so as to pivot between a pushing position and a releasing position, and a pushing block interconnecting said actuating end portion of said actuating plate and said first end portion of said first conductive plate; wherein, when said actuating plate is in the pushing position, said pushing block is driven by said actuating end portion of said actuating plate to move said first end portion of said first conductive plate toward said second end portion of said second conductive plate such that said first and third conductive contacts, firstly, contact electrically each other and, subsequently, that said second and fourth conductive contacts electrically contact each other; and wherein, when said actuating plate is in the releasing position, said first end portion of said first conductive plate moves away from said second end portion of said second conductive plate. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification