Electromagnetic relay
AssigneesEllenberger & Poensgen GmbH, Ceram Tec GmbH
InventorsMichael Naumann, Reiner Bindig, Alfons Kelnberger, Hans-Juergen Schreiner, Peter Stingl, Peter Meckler, Markus Birner
Life of this patent
Estimating the term…
Abstract
An electromagnetic relay, in particular a motor vehicle relay, contains a magnet yoke, a relay coil, a hinged armature which is pivotable about an axis of rotation and on which a moving contact, as working or switchover contact, is retained relative to at least one fixed contact. A piezo actuator is provided, which keeps the working or switchover contact closed when the relay coil is de-energized as a result of the actuation of the piezo actuator.
Claims15
An electromagnetic relay, comprising:
- a magnet yoke having a clamping gap formed therein;
- a relay coil;
- a moving contact;
- a first fixed contact;
- a hinged armature being pivotable about a rotation axis and on which said moving contact being held relative to at least said first fixed contact;
- a piezo actuator which, as a result of being actuated, keeps said moving contact closed when said relay coil is de-energized;
- a tension element having a free side, said tension element being held on one side of said hinged armature, and being routed by way of said free side into said clamping gap and, as a result of said piezo actuator being actuated, is held in said clamping gap in a force-fitting manner;
- and
- a lever transmission device for converting a force stroke, which is generated by said piezo actuator as a result of being actuated, into a clamping stroke for fixing said tension element, which is held on a hinged armature side and/or on a moving contact side, in a releasable and clamped manner.
An electromagnetic relay, comprising:
- a relay coil;
- a moving contact;
- a first fixed contact;
- a hinged armature being pivotable about a rotation axis and on which said moving contact being held relative to at least said first fixed contact;
- an L-shaped magnet yoke containing, in relation to said relay coil, a radial pole limb and an axial functional limb to which said hinged armature is connected in an articulated manner by means of said rotation axis;
- a piezo actuator which, as a result of being actuated, keeps said moving contact closed when said relay coil is de-energized;
- said radial pole limb having a supporting limb and a clamping limb;
- and
- said axial functional limb having a U-shaped receiving pocket for said piezo actuator, wherein said U-shaped receiving pocket has U-limbs, which are parallel to one another, merge with said clamping limb and, respectively, with said supporting limb of said radial pole limb.
Dependencies are inferred from the claim text.