An electromagnetic actuator includes an electromagnet having a coil, which coil surrounds a pole core, and a magnet armature, which can be moved toward the pole core by the electromagnet, wherein the magnet armature has a bearing surface facing the pole core and the pole core has a correspondingly opposite counter surface. The bearing surface and/or the counter bearing surface has a layer that prevents direct contact of the bearing surface with the counter bearing surface and that causes damping of the approaching movement.

A linear actuator (20, 20, 20) comprises a plunger receptacle (22); a coil (24); a magnetic plunger (26); a magnetic base (28); a return spring (30); and a lock spring (32, 32). The coil (24) is wound about at least a portion of an exterior surface of the plunger receptacle (22). The magnetic plunger (26) is at least partially disposed within a cavity at least partially formed by an interior surface of the plunger receptacle (22) for linear motion along a plunger axis (34). The magnetic base (28) is radially disposed relative to the plunger (26). The return spring (30) is disposed to bias the plunger (26) to a plunger extended position. The lock spring (32, 32) is configured and oriented to lock the plunger (26) in the plunger extended position when power is not applied to the coil (24) but to be attracted to the magnetic base (28) and thereby permit movement of the plunger (26) to a plunger retracted position when the power is applied to the coil (24).

A solenoid valve for a brake system capable of reducing noise and vibration caused during operation of the solenoid valve. The solenoid valve includes a valve core, a valve dome, an armature, and a plunger. An upper surface of the armature is recessed to form an insertion recess, a buffer member buffers an impact between the armature and the valve dome, the buffer member includes a support part between the upper surface of the armature and the valve dome and buffers and supports the armature, and an insertion part connects to the support part and inserted into the insertion recess.

The present invention provides for a solenoid valve assembly including a housing (32) defining a cavity (34). A support (48) is disposed in the cavity and defines a bore (50). A coil (60) is disposed about the support and defines an energized state for generating a magnetic field and a de-energized state. A plunger (74) is movably disposed in the bore of the support between a first position engaging the housing and a second position spaced from the housing. The plunger is radially spaced from the support to define a gap (76) between the plunger and the support. A dampener (86) is coupled to one of the support and the plunger adjacent the gap to prevent direct engagement between the support and the plunger as the plunger moves between the first and second positions during the energized and de-energized states for reducing noise during operation.

An electromagnetic actuation assembly includes an actuator comprising a magnetic field frame provided with an annular housing extending circumferentially about a reference axis, a coil arranged in the annular housing of the magnetic field frame, and a plunger able to be moved axially between a first axial zone and a second axial zone with respect to the magnetic field frame as a function of the magnetic field produced by the coil when this coil is supplied with current. A first shock absorber is mounted either on the plunger or on the magnetic field frame or on an actuator support to which the actuator is fixed, the first shock absorber being arranged in such a way as to be deformed by the movement of the plunger when the plunger reaches the first axial zone.

A linear actuator may include a stator; a movable element; a spring member connected to the movable element and the stator and structured to support the movable element in such a way as to be movable with respect to the stator in a direction of an axis line; a magnetic drive mechanism structured to drive the movable element in the direction of the axis line; and a gel damper member placed at a position on a center line of the movable element or one of a group of positions surrounding the center line, between the stator and the movable element.

An actuator arrangement (10) for an electromagnetically actuatable valve (42, 66, 72) is disclosed. The actuator arrangement (10) comprises: a housing having a first housing wall (12) and having a second housing wall (14) situated opposite the first housing wall (12), a solenoid armature (16) which is arranged in the housing between the first housing wall (12) and the second housing wall (14) and which is movable between the first housing wall (12) and the second housing wall (14) along an axis (18), wherein the solenoid armature (16) has a first axial armature end surface (20), which faces toward the first housing wall (12), and a second axial armature end surface (22), which faces toward the second housing wall (14), and the solenoid armature (16) is movable between a first position, in which the first armature end surface (20) makes contact with the first housing wall (12), and a second position, in which the first armature end surface (20) has been moved away from the first housing wall (12). The actuator arrangement (10) furthermore comprises a damping element (24, 24A, 24B) which is arranged on the second armature end surface (22) and which extends from the second armature end surface (22) in the direction of the second housing wall (14) and which is composed of an elastomer material, wherein the at least one damping element (24, 24A, 24B) makes contact with the second housing wall (14) both in the first position and in the second position of the solenoid armature (16), and at least one stop element (26, 30, 30A, 30B) which is arranged on the second armature end surface (22) and which extends from the second armature end surface (22) in the direction of the second housing wall (14) and which is composed of an elastomer material and which, in the first position of the solenoid armature (16), has been moved away from the second housing (14) and, in the second position of the solenoid armature (16), makes contact with the second housing wall (14).

An actuator for an assembly in a motor vehicle may have a moving armature in an armature chamber, where the actuator has a fluid path that is configured for fluid transfer between the armature chamber and a fluid reservoir in the assembly when the actuator is installed in an assembly, where the actuator is configured to fill the armature chamber with fluid, in particular oil, when the armature moves axially, thereby drawing fluid into the armature chamber when the actuator is operated in a fluid chamber, in particular an oil chamber.

A device's display can be moved based on sensor data to protect the display. The display can be moved via springs and/or electromagnets. The display can be moved into a safe recessed position, allowing a frame to absorb impacts that might otherwise damage the display. The display can also be moved back out of the recessed position.

A first embodiment of the present invention relates to an actuator device comprising: a housing; a holder disposed inside the housing; a reflective member disposed on the holder; a moving plate disposed between the housing and the holder; a rigid mover coupled to the holder; and a damper coupled to the rigid mover, wherein the rigid mover comprises a protruding portion coupled to the housing by the damper.