Adjustment device for linearly moving a driven element

Patent metadata

Field	Value
Publication number	US-12456934-B2
Application number	US-202118031732-A
Country	US
Kind code	B2
Filing date	Oct 13, 2021
Priority date	Oct 13, 2020
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

The invention relates to an adjustment device, comprising: a stator; a driven element; a guide apparatus for bearing the driven element in a guided manner with respect to the stator in a drive direction when the adjustment device is operational; a slider; a bearing apparatus which bears the slider so as to be movable relative to the stator in the drive direction; a drive device which drives the slider; a coupling apparatus; and a clamping apparatus. When released, the clamping apparatus allows a range of movement between the connection device and either the slider or the driven element in order to set up an assembly state of the adjustment device and, when clamped, said clamping apparatus rigidly couples together the connection section and either the slider or the driven element in the drive direction and thereby allows a relative rotational movement between the driven element and the about a rotational axis extending in the drive direction.

First claim

What is claimed is:

1. An adjustment device which comprises a stator, a driven element, a guide device which, in the operational state of the adjustment device, provides a guided support of the driven element with respect to the stator in a drive direction, a slider, a support device which movably supports the slider relative to the stator along the drive direction, a drive device comprising a coupling device and a clamping device;
wherein the coupling device comprises a connection device which is fastened to the driven element or the slider; and
wherein, in a release state, the clamping device permits a movement clearance between a connection section of the connection device and either the slider or the driven element in order to establish a mounting state of the adjustment device and wherein, in a clamping state, the clamping device rigidly couples the connection section and either the slider or the driven element in the drive direction, thereby causing a rotational relative movement about a rotational axis, which runs along the drive direction, between the driven element and the slider.

2. The adjustment device according to claim 1 ,
wherein the connection device comprises a base section which is attached to the driven element and connected to the connection section; and
wherein, in a release state, the clamping device allows a clearance space between the connection section and the slider for establishing a mounting state of the adjustment device and, in a clamping state, the clamping device rigidly connects the connection section and the slider in the drive direction and thereby allows a rotational relative movement about a rotational axis, which runs along the drive direction, between the driven element and the slider.

3. The adjustment device according to claim 2 ,
wherein the connection section projects into a recess of the slider;
wherein the clamping device is formed in or on the slider;
wherein, in the release state, the clamping device allows a movement clearance of the connection section in the recess of the slider;
wherein, in the operational state of the adjustment device, the clamping device presses the connection section against a contact surface of the recess of the slider facing the clamping device and thereby rigidly couples the slider to the driven element in the drive direction, wherein a rotational relative movement about a rotational axis, which runs along the drive direction, between the driven element and the slider.

4. The adjustment device according to claim 3 , wherein the connection section comprises at least one resilient portion.

5. The adjustment device according to claim 4 , characterized in that the spring-elastic portion is formed integrally with the connection section.

6. The adjustment device according to claim 2 , wherein the connection section comprises a first support section on the side facing the clamping device, wherein a respective support element is mounted in the first support section and wherein, in the clamping state, the clamping device presses the support element against the connection section and thereby permits a relative rotation between the respective support element and the clamping device.

7. The adjustment device according to claim 2 , wherein the connection section of the slider comprises a second support section on the side facing away from the clamping device, wherein a respective support element is supported in the second support section, and wherein, in the clamping state, the clamping device presses the connection section against the second support element and the latter presses against the contact surface of the recess and thereby permits a relative rotation between the respective support element and the connection section of the slider.

8. The adjustment device according to claim 6 , wherein the respective one of the support elements is designed as a support element which is spherically shaped at least in a section.

9. The adjustment device according to claim 6 , wherein the respective support section is designed in such a way that it acts in a self-centering manner with respect to the spherically shaped section of the support element.

10. The adjustment device according to claim 2 , wherein the connection section comprises two spring-elastic sections arranged opposite and spaced apart from one another and wherein a clamping element is arranged in an intermediate space of the connection section located between the two spring-elastic sections, against which clamping element the two spring-elastic sections are prestressed by means of the support elements so that, in the operational state of the adjustment device, the clamping device presses the spring-elastic sections with the clamping element against the contact surface of the recess of the slider and thereby rigidly couples the slider to the driven element in the drive direction.

11. The adjustment device according to claim 10 , wherein the material of the clamping element comprises a coefficient of thermal expansion that is different from the material of the connection element.

12. The adjustment device according to claim 2 , wherein the base section is attached to the driven element or to the slider, wherein the clamping device acts between the base section and the connection section, wherein, in the release state, the clamping device allows clearance between the base section and the connection section, and in the clamping state, the connection section protrudes from the base section against a mounting part of the slider and the latter presses against the driven element.

13. The adjustment device according to claim 12 , wherein the base section and the connection section are resiliently mounted to each other in the drive direction.

14. The adjustment device according to claim 12 , wherein the base section and the connection section form a solid-state body assembly comprising a solid-state hinge located between the base section and the connection section.

15. The adjustment device according to claim 12 , wherein a first support element is situated between the mounting part of the slider and the connection section, and wherein a second support element is situated between the mounting part of the slider and the driven element, so that, in the clamping state, the support elements form a pivot joint for providing the rotational relative movement about an axis of rotation between the driven element and the slider extending along the drive direction.

16. The adjustment device according to claim 12 , wherein the respective support elements are each designed as a support element which is spherically shaped at least in a section.

17. The adjustment device according to claim 12 , wherein the mounting part of the slider comprises a first support section on the side facing the clamping device, wherein a respective support element is mounted in the first support section, and wherein in the clamping state the clamping device presses the first support element against the mounting part and thereby allows a relative rotation between the respective support element and the clamping device.

18. The adjustment device according to claim 12 , wherein the mounting part of the slider comprises a second support section on the side facing away from the clamping device, wherein a respective support element is mounted in the second support section, and wherein, in the clamping state, the clamping device presses the mounting part against the second support element and the latter presses against the driven element and thereby allows a relative rotation between the respective suppor

Assignees

• Phys Instrumente Pi Gmbh & Co Kg

Inventors

• Bocskai Dominik

Classifications

• H02N2/02 Primary

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

• H02N2/04 Primary

  Constructional details · CPC title

• H02K41/03

  Synchronous motors; Motors moving step by step; Reluctance motors (H02K41/035 takes precedence) · CPC title

• H02K7/09

  with magnetic bearings · CPC title

• H02N2/103

  by pressing one or more vibrators against the rotor · CPC title