Actuator device with resetting means

Patent metadata

Field	Value
Publication number	US-9847160-B2
Application number	US-201414905979-A
Country	US
Kind code	B2
Filing date	May 16, 2014
Priority date	Jul 19, 2013
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

An actuator device for bidirectional adjustment of an adjusting body constructed for interaction with an adjustment partner and preferably realized as a tappet ( 14 ), having first adjustment means ( 10 ), which have expansion means having a magnetically effective shape-memory alloy material ( 12 ) and exerting an adjustment force, particularly a pushing force, on the adjusting body for moving the same along a first adjustment direction, which carry out an expansion generating the adjustment force as a reaction to a first energizing of first coil means ( 16 ), and second adjustment means ( 20; 20′, 34 ) assigned to the adjusting body and provided separately from the expansion means and the first coil unit, which are constructed for moving the adjusting body in a second adjustment direction opposite to the first adjustment direction, characterized in that the second adjustment means have an electromagnetically or electromotively driven actuator and therefore for moving the adjusting body in the second adjustment direction construct a drive, which can be activated as a reaction to signal loading, particularly a second electrical energizing.

First claim

The invention claimed is:

1. An actuator device for bidirectional adjustment of an adjusting body constructed for interaction with an adjustment partner ( 14 ), comprising
first adjustment means ( 10 ), which have expansion means having a magnetically effective shape-memory alloy material ( 12 ) and exert an adjustment force, particularly a pushing force, on the adjusting body for moving the same along a first adjustment direction, wherein the first adjustment means carry out an expansion generating the adjustment force as a reaction to a first energising of first coil means ( 16 ), and
second adjustment means ( 20 ; 20 ′, 34 ) assigned to the adjusting body and provided separately from the expansion means and the first coil unit, which are constructed for moving the adjusting body in a second adjustment direction opposite to the first adjustment direction, wherein the second adjustment means have an electromagnetically or electromotively driven actuator as a drive for moving the adjusting body in the second adjustment direction, wherein the drive can be activated as a reaction to signal loading, particularly a second electrical energising, wherein mechanical spring means ( 28 ) and/or permanent magnet means ( 30 ) are assigned to the second adjustment means in such a manner that the same exert a spring and/or magnetic force acting in the second adjustment direction on the adjusting body.

2. The device according to claim 1 , wherein the expansion means ( 12 ) are set up and interact with the adjusting body in such a manner that in the case of the first energising, over at least 80% of a maximum expansion travel of the expansion means, the movement of the adjusting body along the first adjustment direction is effected.

3. The device according to claim 1 , wherein the first coil means and the second adjustment means have electrical control means, which are connected upstream in such a manner that the adjusting body can be kept currentlessly stable in at least one intermediate position between an end position of the first or the second adjustment direction.

4. The device according to claim 1 , wherein the spring or magnetic force is set up in such a manner that it is smaller than a reset force for bringing the expansion means from an expanded to a compressed state.

5. The device according to claim 1 , wherein the adjusting body ( 14 ) is realised by the expansion means ( 12 ) or connected to the same.

6. The device according to claim 1 , wherein the movement of the adjusting body along the first or second adjustment direction takes place in a linear or arcuate manner at least in certain sections.

7. The device according to claim 1 , wherein the first and the second adjustment means of mutually opposite and/or opposite attack positions, with respect to the adjusting body, interact with the adjusting body.

8. The device according to claim 1 , wherein the first and second adjustment means constructing a drive section interact with the adjusting body in such a manner that the expansion of the expansion means and the movement of the drive section are transmitted directly to the adjusting body for moving the same.

9. The device according to claim 1 , wherein the first and/or the second adjustment means constructing a drive section interact with the adjusting body by means of mechanically effective transmission and/or gearing means.

10. A use of the actuator device according to claim 1 , as push-push actuator for adjusting the adjusting body into at least one currentlessly stable intermediate position between end positions of the first and the second adjustment direction.

11. The use according to claim 10 , further comprising regulating means assigned to the first and/or the second adjustment means for holding the adjusting body in the at least one intermediate position.

12. An actuator device for bidirectional adjustment of an adjusting body constructed for interaction with an adjustment partner ( 14 ), comprising
first adjustment means ( 10 ), which have expansion means having a magnetically effective shape-memory alloy material ( 12 ) and exert an adjustment force, particularly a pushing force, on the adjusting body for moving the same along a first adjustment direction, wherein the first adjustment means carry out an expansion generating the adjustment force as a reaction to a first energising of first coil means ( 16 ), and
second adjustment means ( 20 ; 20 ′, 34 ) assigned to the adjusting body and provided separately from the expansion means and the first coil unit, which are constructed for moving the adjusting body in a second adjustment direction opposite to the first adjustment direction, wherein the second adjustment means have an electromagnetically or electromotively driven actuator as a drive for moving the adjusting body in the second adjustment direction, wherein the drive can be activated as a reaction to signal loading, particularly a second electrical energising, wherein the adjusting body constructs an armature section of the second adjustment means realised as electromagnet ( 20 ), to which cone means ( 32 ) for influencing the electromagnetic adjustment and/or force behaviour are further preferably assigned.

Assignees

• Eto Magnetic Gmbh

Inventors

• Schiepp Thomas
• Laufenberg Markus

Classifications

• H01F7/18

  Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings · CPC title

• H01L41/12

  Electricity · mapped topic

• H01F7/08 Primary

  with armatures · CPC title

• H02N2/02 Primary

  producing linear motion, e.g. actuators; Linear positioners {; Linear motors} · CPC title

• H10N35/00

  Magnetostrictive devices (integrated devices or assemblies of multiple devices H10N39/00) · CPC title