Electromagnetic actuator device
First Claim
1. An electromagnetic actuator device, comprising:
- a stationary yoke unit (10, 54) having a first yoke section (16, 56) and an armature unit (14, 64) which is moveable relative to the stationary yoke unit (10, 54);
a coil unit (28, 58) enclosing the first yoke section (16, 56), wherein the coil unit is operable in an energized or de-energized state;
permanent magnetic means (22, 36, 68) positioned on the yoke unit (10, 54) to generate a magnetic flux circuit which, when the coil unit (28, 58) is operated in the de-energized state, attracts the armature unit (14) toward the first yoke section (16, 56); and
a spring exerting a spring force on the armature unit opposed to force of the permanent magnetic means, wherein when the coil unit is operated in the de-energized state, the magnetic flux circuit holds the armature unit (14) in a first position against the spring force, and when the coil unit is operated in the energized state, the magnetic flux circuit is moved out of the first yoke section and the armature unit such that the spring force moves the armature unit away from the first yoke section, wherein the permanent magnetic means (22, 36, 68) are integrated on a cover side or front face of a housing which is at least partially of hollow cylindrical shape that implements the yoke unit (10, 54) and additional yoke sections (20), wherein the permanent magnetic means (22) is connected at one end to one of the additional yoke sections, and connected at an opposed end to another of the additional yoke sections, wherein the armature unit (14) is substantially parallel to the additional yoke sections (20), wherein a central axis of the housing runs axially with or parallel to a longitudinal axis of the armature unit (14, 64), or is integrated into the yoke unit, and wherein the force of the permanent magnetic means is greater than the spring force of the spring.
1 Assignment
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Accused Products
Abstract
An electromagnetic actuator device has a coil unit (28, 58) enclosing a first yoke section (16, 56) of a stationary yoke unit (10, 54), an armature unit (14, 64) movably guided relative to the yoke unit (10, 54), by energization to interact with a positioning partner on the output side of the armature unit (14, 64) and permanent magnetic agents (22, 36, 68) coupled into a magnetic flux circuit of the yoke unit (10, 54) wherein de-energization of the coil unit (28, 58) a permanent magnetic flux circuit through the yoke unit (10, 54) and a section of the armature unit (14, 64) that is free of permanent magnetic flux and energization displaces the permanent magnetic flux, out of the section, wherein the armature unit (14), by spring force is pre-loaded in a direction opposed to permanent magnetic retaining force of the armature unit (14, 64) and the positioning partner is a combustion engine unit.
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Citations
11 Claims
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1. An electromagnetic actuator device, comprising:
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a stationary yoke unit (10, 54) having a first yoke section (16, 56) and an armature unit (14, 64) which is moveable relative to the stationary yoke unit (10, 54); a coil unit (28, 58) enclosing the first yoke section (16, 56), wherein the coil unit is operable in an energized or de-energized state; permanent magnetic means (22, 36, 68) positioned on the yoke unit (10, 54) to generate a magnetic flux circuit which, when the coil unit (28, 58) is operated in the de-energized state, attracts the armature unit (14) toward the first yoke section (16, 56); and a spring exerting a spring force on the armature unit opposed to force of the permanent magnetic means, wherein when the coil unit is operated in the de-energized state, the magnetic flux circuit holds the armature unit (14) in a first position against the spring force, and when the coil unit is operated in the energized state, the magnetic flux circuit is moved out of the first yoke section and the armature unit such that the spring force moves the armature unit away from the first yoke section, wherein the permanent magnetic means (22, 36, 68) are integrated on a cover side or front face of a housing which is at least partially of hollow cylindrical shape that implements the yoke unit (10, 54) and additional yoke sections (20), wherein the permanent magnetic means (22) is connected at one end to one of the additional yoke sections, and connected at an opposed end to another of the additional yoke sections, wherein the armature unit (14) is substantially parallel to the additional yoke sections (20), wherein a central axis of the housing runs axially with or parallel to a longitudinal axis of the armature unit (14, 64), or is integrated into the yoke unit, and wherein the force of the permanent magnetic means is greater than the spring force of the spring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification